├── .github
    └── workflows
    │   ├── release.yml
    │   └── rust.yml
├── .gitignore
├── Cargo.lock
├── Cargo.toml
├── LICENSE
├── README.md
├── _config.yml
├── assets
    ├── Amble-Bold.ttf
    ├── Amble-Italic.ttf
    ├── Amble-Regular.ttf
    ├── Hack-Regular.ttf
    ├── advent-of-code.md
    ├── agical.json
    ├── agical.png
    ├── aoc2022
    │   └── input1.txt
    ├── application-events.md
    ├── asterisk.md
    ├── background.png
    ├── continuous-deployment.md
    ├── default-theme.json
    ├── event-sourcing.md
    ├── exalted-beer.json
    ├── exaltedbeer.png
    ├── ferris.png
    ├── homebrewing.md
    ├── raku.md
    ├── rust.json
    ├── rust.png
    ├── rusty-aquarium.md
    ├── rusty-slider.md
    ├── rusty.json
    ├── screenshot.png
    ├── transitions
    │   ├── bignoise.png
    │   ├── blobs.png
    │   ├── checkerboard.png
    │   ├── circleswipe.png
    │   ├── cubicnoise.png
    │   ├── curtainsclose.png
    │   ├── curtainsopen.png
    │   ├── diagonalleft.png
    │   ├── diagonalright.png
    │   ├── fade.png
    │   ├── fan.png
    │   ├── halftone.png
    │   ├── implode.png
    │   ├── lines.png
    │   ├── maze.png
    │   ├── mosaic.png
    │   ├── noise.png
    │   ├── plasma.png
    │   ├── radialin.png
    │   ├── radialout.png
    │   ├── slide.png
    │   ├── smoke.png
    │   ├── split.png
    │   ├── starburst.png
    │   ├── stripes.png
    │   ├── swipedown.png
    │   ├── swipeleft.png
    │   ├── swiperight.png
    │   ├── swipeup.png
    │   ├── swirl.png
    │   ├── triangles.png
    │   ├── vortex.png
    │   ├── waves.png
    │   ├── weave.png
    │   └── zebra.png
    ├── uu.json
    ├── uu.png
    └── vim-emacs.md
├── bin
    ├── build-apk
    ├── build-linux
    ├── build-web
    ├── build-win
    └── serve-web
├── demo
    ├── assets
    │   ├── Amble-Bold.ttf
    │   ├── Amble-Italic.ttf
    │   ├── Amble-Regular.ttf
    │   ├── Amble.woff
    │   ├── Hack-Regular.ttf
    │   ├── advent-of-code.md
    │   ├── agical-advent-of-code.png
    │   ├── agical-application-events.png
    │   ├── agical-asterisk.png
    │   ├── agical-continuous-deployment.png
    │   ├── agical-event-sourcing.png
    │   ├── agical-homebrewing.png
    │   ├── agical-macroquad.png
    │   ├── agical-raku.png
    │   ├── agical-rusty-aquarium.png
    │   ├── agical-rusty-slider.png
    │   ├── agical-vim-emacs.png
    │   ├── agical.json
    │   ├── agical.png
    │   ├── aoc2022
    │   │   └── input1.txt
    │   ├── application-events.md
    │   ├── application-events.png
    │   ├── asterisk.md
    │   ├── asterisk.png
    │   ├── background.png
    │   ├── continuous-deployment.md
    │   ├── continuous-deployment.png
    │   ├── default-theme-advent-of-code.png
    │   ├── default-theme-application-events.png
    │   ├── default-theme-asterisk.png
    │   ├── default-theme-continuous-deployment.png
    │   ├── default-theme-event-sourcing.png
    │   ├── default-theme-homebrewing.png
    │   ├── default-theme-macroquad.png
    │   ├── default-theme-raku.png
    │   ├── default-theme-rusty-aquarium.png
    │   ├── default-theme-rusty-slider.png
    │   ├── default-theme-vim-emacs.png
    │   ├── default-theme.json
    │   ├── default-theme.png
    │   ├── event-sourcing.md
    │   ├── event-sourcing.png
    │   ├── exalted-beer-advent-of-code.png
    │   ├── exalted-beer-application-events.png
    │   ├── exalted-beer-asterisk.png
    │   ├── exalted-beer-continuous-deployment.png
    │   ├── exalted-beer-event-sourcing.png
    │   ├── exalted-beer-homebrewing.png
    │   ├── exalted-beer-macroquad.png
    │   ├── exalted-beer-raku.png
    │   ├── exalted-beer-rusty-aquarium.png
    │   ├── exalted-beer-rusty-slider.png
    │   ├── exalted-beer-vim-emacs.png
    │   ├── exalted-beer.json
    │   ├── exalted-beer.png
    │   ├── exaltedbeer.png
    │   ├── ferris.png
    │   ├── homebrewing.md
    │   ├── homebrewing.png
    │   ├── macroquad.md
    │   ├── raku.md
    │   ├── raku.png
    │   ├── rust-advent-of-code.png
    │   ├── rust-application-events.png
    │   ├── rust-asterisk.png
    │   ├── rust-continuous-deployment.png
    │   ├── rust-event-sourcing.png
    │   ├── rust-homebrewing.png
    │   ├── rust-macroquad.png
    │   ├── rust-raku.png
    │   ├── rust-rusty-aquarium.png
    │   ├── rust-rusty-slider.png
    │   ├── rust-vim-emacs.png
    │   ├── rust.json
    │   ├── rust.png
    │   ├── rusty-advent-of-code.png
    │   ├── rusty-application-events.png
    │   ├── rusty-aquarium.md
    │   ├── rusty-aquarium.png
    │   ├── rusty-asterisk.png
    │   ├── rusty-continuous-deployment.png
    │   ├── rusty-event-sourcing.png
    │   ├── rusty-homebrewing.png
    │   ├── rusty-macroquad.png
    │   ├── rusty-raku.png
    │   ├── rusty-rusty-aquarium.png
    │   ├── rusty-rusty-slider.png
    │   ├── rusty-slider-card.jpg
    │   ├── rusty-slider.md
    │   ├── rusty-slider.png
    │   ├── rusty-vim-emacs.png
    │   ├── rusty.json
    │   ├── rusty.png
    │   ├── screenshot.png
    │   ├── theme.json
    │   ├── thumbnail-agical.png
    │   ├── thumbnail-default-theme.png
    │   ├── thumbnail-exalted-beer.png
    │   ├── thumbnail-rust.png
    │   ├── thumbnail-rusty.png
    │   ├── thumbnail-uu.png
    │   ├── transition-demo.gif
    │   ├── transition-demo.mp4
    │   ├── transition_starburst.jpg
    │   ├── transitions
    │   │   ├── bignoise.png
    │   │   ├── blobs.png
    │   │   ├── checkerboard.png
    │   │   ├── circleswipe.png
    │   │   ├── cubicnoise.png
    │   │   ├── curtains.png
    │   │   ├── curtainsclose.png
    │   │   ├── curtainsopen.png
    │   │   ├── diagonalleft.png
    │   │   ├── diagonalright.png
    │   │   ├── fade.png
    │   │   ├── fan.png
    │   │   ├── halftone.png
    │   │   ├── implode.png
    │   │   ├── lines.png
    │   │   ├── maze.png
    │   │   ├── mosaic.png
    │   │   ├── noise.png
    │   │   ├── plasma.png
    │   │   ├── radial.png
    │   │   ├── radialin.png
    │   │   ├── radialout.png
    │   │   ├── slide.png
    │   │   ├── smoke.png
    │   │   ├── split.png
    │   │   ├── starburst.png
    │   │   ├── stripes.png
    │   │   ├── swipedown.png
    │   │   ├── swipeleft.png
    │   │   ├── swiperight.png
    │   │   ├── swipeup.png
    │   │   ├── swirl.png
    │   │   ├── triangles.png
    │   │   ├── vortex.png
    │   │   ├── waves.png
    │   │   ├── weave.png
    │   │   └── zebra.png
    │   ├── uu-advent-of-code.png
    │   ├── uu-application-events.png
    │   ├── uu-asterisk.png
    │   ├── uu-continuous-deployment.png
    │   ├── uu-event-sourcing.png
    │   ├── uu-homebrewing.png
    │   ├── uu-macroquad.png
    │   ├── uu-raku.png
    │   ├── uu-rusty-aquarium.png
    │   ├── uu-rusty-slider.png
    │   ├── uu-vim-emacs.png
    │   ├── uu.json
    │   ├── uu.png
    │   ├── vim-emacs.md
    │   └── vim-emacs.png
    ├── example-slideshows.html
    ├── gl.js
    ├── index.html
    ├── manifest.json
    ├── mq_js_bundle.js
    ├── quad-url.js
    └── rusty_slider.wasm
└── src
    ├── app_options.rs
    ├── bin
        └── generate-slide-list.rs
    ├── clipboard.rs
    ├── code_box_builder.rs
    ├── codebox.rs
    ├── drawbox.rs
    ├── executable_code.rs
    ├── helptext.txt
    ├── hex_color.rs
    ├── imagebox.rs
    ├── lib.rs
    ├── main.rs
    ├── markdowntoslides.rs
    ├── prelude.rs
    ├── shaders.rs
    ├── show_help.rs
    ├── slider.rs
    ├── textbox.rs
    ├── theme.rs
    ├── transition.rs
    └── transitioner.rs


/.github/workflows/release.yml:
--------------------------------------------------------------------------------
 1 | name: Release
 2 | 
 3 | on:
 4 |   push:
 5 |     tags:
 6 |       - 'v*'
 7 | 
 8 | jobs:
 9 |   publish:
10 |     name: Release for ${{ matrix.config.target }} / ${{ matrix.config.os }}
11 |     runs-on: ${{ matrix.config.os }}
12 |     strategy:
13 |       fail-fast: false
14 |       matrix:
15 |         config:
16 |           - os: ubuntu-latest
17 |             artifact_name: rusty_slider
18 |             zip_file: rusty-slider-linux.tar.gz
19 |             asset_name: rusty-slider-linux-$tag.tar.gz
20 |             directory: rusty-slider-linux-${{ github.ref_name }}
21 |             target: 'x86_64-unknown-linux-gnu'
22 |           - os: windows-latest
23 |             artifact_name: rusty_slider.exe
24 |             zip_file: rusty-slider-windows.zip
25 |             asset_name: rusty-slider-windows-$tag.zip
26 |             directory: rusty-slider-windows-${{ github.ref_name }}
27 |             target: 'x86_64-pc-windows-msvc'
28 |           - os: macos-latest
29 |             artifact_name: rusty_slider
30 |             zip_file: rusty-slider-macos.zip
31 |             asset_name: rusty-slider-macos-$tag.zip
32 |             directory: rusty-slider-macos-${{ github.ref_name }}
33 |             target: 'x86_64-apple-darwin'
34 |           - os: ubuntu-latest
35 |             artifact_name: rusty_slider.wasm
36 |             zip_file: rusty-slider-wasm.zip
37 |             asset_name: rusty-slider-wasm-$tag.zip
38 |             directory: rusty-slider-wasm-${{ github.ref_name }}
39 |             target: 'wasm32-unknown-unknown'
40 |         include:
41 |           - os: ubuntu-latest
42 |             packages: libx11-dev libxi-dev libgl1-mesa-dev gcc-mingw-w64 libasound2-dev
43 | 
44 |     steps:
45 |       - uses: actions/checkout@v2
46 |       - name: Install packages (Linux)
47 |         if: runner.os == 'Linux'
48 |         run: |
49 |           sudo apt-get update
50 |           sudo apt-get -yq --no-install-suggests --no-install-recommends install ${{ matrix.packages }}
51 |       - uses: actions-rs/toolchain@v1
52 |         with:
53 |           toolchain: stable
54 |           target: ${{ matrix.config.target }}
55 |           override: true
56 |       - name: Workaround MinGW issue # https://github.com/rust-lang/rust/issues/47048
57 |         if: runner.os == 'Linux' && matrix.config.target == 'x86_64-pc-windows-gnu'
58 |         run: |
59 |           sudo cp /usr/x86_64-w64-mingw32/lib/dllcrt2.o  ~/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-pc-windows-gnu/lib/dllcrt2.o
60 |           sudo cp /usr/x86_64-w64-mingw32/lib/crt2.o  ~/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-pc-windows-gnu/lib/crt2.o
61 |           echo "[target.x86_64-pc-windows-gnu]" >> ~/.cargo/config
62 |           echo "linker = \"/usr/bin/x86_64-w64-mingw32-gcc\"" >> ~/.cargo/config
63 |       - uses: actions-rs/cargo@v1
64 |         with:
65 |           command: build
66 |           args: --release --locked --all-targets --target=${{ matrix.config.target }}
67 |       - name: Zip release archive
68 |         if: matrix.config.target == 'wasm32-unknown-unknown'
69 |         run: |
70 |           mkdir ${{ matrix.config.directory }}
71 |           cp -pR assets ${{ matrix.config.directory }}/
72 |           cp -pR target/${{ matrix.config.target }}/release/${{ matrix.config.artifact_name }} demo/*.html demo/*.js demo/*.json ${{ matrix.config.directory }}/
73 |           zip -r ${{ matrix.config.zip_file }} ${{ matrix.config.directory }}
74 |       - name: Zip release archive
75 |         if: matrix.config.target == 'x86_64-unknown-linux-gnu'
76 |         run: |
77 |           mkdir ${{ matrix.config.directory }}
78 |           cp -pR assets ${{ matrix.config.directory }}/
79 |           cp target/${{ matrix.config.target }}/release/${{ matrix.config.artifact_name }} ${{ matrix.config.directory }}/
80 |           tar -zcf ${{ matrix.config.zip_file }} ${{ matrix.config.directory }}
81 |       - name: Zip release archive
82 |         if: runner.os == 'Windows' || runner.os == 'macOS'
83 |         run: |
84 |           mkdir -p ${{ matrix.config.directory }}
85 |           cp -R assets ${{ matrix.config.directory }}/
86 |           cp target/${{ matrix.config.target }}/release/${{ matrix.config.artifact_name }} ${{ matrix.config.directory }}/
87 |           7z a -tzip ${{ matrix.config.zip_file }} ${{ matrix.config.directory }}
88 |       - name: Upload binaries to release
89 |         uses: svenstaro/upload-release-action@v2
90 |         with:
91 |           repo_token: ${{ secrets.GITHUB_TOKEN }}
92 |           file: ${{ matrix.config.zip_file }}
93 |           asset_name: ${{ matrix.config.asset_name }}
94 |           tag: ${{ github.ref }}
95 | 


--------------------------------------------------------------------------------
/.github/workflows/rust.yml:
--------------------------------------------------------------------------------
 1 | name: Cross-compile
 2 | 
 3 | on:
 4 |   push:
 5 |     branches: [ main ]
 6 |   pull_request:
 7 |     branches: [ main ]
 8 | 
 9 | env:
10 |   CARGO_TERM_COLOR: always
11 | 
12 | jobs:
13 |   build:
14 |     name: Build
15 |     runs-on: ${{ matrix.config.os }}
16 |     strategy:
17 |       fail-fast: false
18 |       matrix:
19 |         config:
20 |           - { os: ubuntu-latest, target: 'x86_64-unknown-linux-gnu' }
21 |           - { os: ubuntu-latest, target: 'x86_64-pc-windows-gnu' }
22 |           - { os: ubuntu-latest, target: 'wasm32-unknown-unknown' }
23 |           - { os: macos-latest, target: 'x86_64-apple-darwin' }
24 |           - { os: windows-latest, target: 'x86_64-pc-windows-msvc' }
25 |         include:
26 |           - os: ubuntu-latest
27 |             packages: libx11-dev libxi-dev libgl1-mesa-dev gcc-mingw-w64 libasound2-dev
28 | 
29 |     steps:
30 |       - uses: actions/checkout@v2
31 |       - name: Install packages (Linux)
32 |         if: runner.os == 'Linux'
33 |         run: |
34 |           sudo apt-get update
35 |           sudo apt-get -yq --no-install-suggests --no-install-recommends install ${{ matrix.packages }}
36 |       - uses: actions-rs/toolchain@v1
37 |         with:
38 |           toolchain: stable
39 |           target: ${{ matrix.config.target }}
40 |           override: true
41 |       - name: Workaround MinGW issue # https://github.com/rust-lang/rust/issues/47048
42 |         if: runner.os == 'Linux' && matrix.config.target == 'x86_64-pc-windows-gnu'
43 |         run: |
44 |           sudo cp /usr/x86_64-w64-mingw32/lib/dllcrt2.o  ~/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-pc-windows-gnu/lib/dllcrt2.o
45 |           sudo cp /usr/x86_64-w64-mingw32/lib/crt2.o  ~/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-pc-windows-gnu/lib/crt2.o
46 |           echo "[target.x86_64-pc-windows-gnu]" >> ~/.cargo/config
47 |           echo "linker = \"/usr/bin/x86_64-w64-mingw32-gcc\"" >> ~/.cargo/config
48 |       - uses: Swatinem/rust-cache@v2
49 |       - name: Build
50 |         uses: actions-rs/cargo@v1
51 |         with:
52 |           command: build
53 |           args: --all-targets --target=${{ matrix.config.target }}
54 |       - name: Machete
55 |         uses: bnjbvr/cargo-machete@main
56 | 


--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
1 | /target
2 | .DS_Store
3 | /test-slides
4 | 


--------------------------------------------------------------------------------
/Cargo.toml:
--------------------------------------------------------------------------------
 1 | [package]
 2 | name = "rusty-slider"
 3 | version = "0.25.0"
 4 | authors = ["Olle Wreede <olle@wreede.se>"]
 5 | edition = "2024"
 6 | license = "MIT"
 7 | description = "A small tool to display markdown files as a slideshow."
 8 | repository = "https://github.com/ollej/rusty-slider"
 9 | homepage = "https://ollej.github.io/rusty-slider/"
10 | readme = "README.md"
11 | categories = ["command-line-utilities"]
12 | keywords = ["markdown", "slideshow", "presentation", "graphics", "wasm"]
13 | default-run = "rusty_slider"
14 | 
15 | [package.metadata.scripts]
16 | build-web = "bin/build-web"
17 | build-linux = "bin/build-linux"
18 | build-win = "bin/build-win"
19 | serve-web = "bin/serve-web"
20 | build-apk = "bin/build-apk"
21 | 
22 | [dependencies]
23 | clap = { version = "4.0.18", features = ["derive"] }
24 | colorsys = "0.6.5"
25 | convert_case = "0.6.0"
26 | glob = "0.3.0"
27 | macroquad = "0.4.13"
28 | markdown = { git = "https://github.com/johannhof/markdown.rs" }
29 | maud = "0.24.0"
30 | nanoserde = "0.1.30"
31 | quad-url = "0.1.0"
32 | regex = "1.5.4"
33 | strum = { version = "0.24.1", features = ["derive"] }
34 | strum_macros = "0.24.3"
35 | syntect = { version = "5.0.0", default-features = false, features = ["default-fancy"] }
36 | tempfile = "3.3.0"
37 | 
38 | [profile.dev]
39 | debug = 1 # less precise locations
40 | 
41 | # Doesn't work with android build
42 | [profile.dev.package.'*']
43 | debug = false # no debug symbols for deps
44 | opt-level = 3
45 | 
46 | [profile.release]
47 | opt-level = 'z'
48 | lto = true
49 | panic = 'abort'
50 | codegen-units = 1
51 | strip = true
52 | 
53 | [lib]
54 | name = "rusty_slider"
55 | path = "src/lib.rs"
56 | 
57 | [[bin]]
58 | name = "rusty_slider"
59 | path = "src/main.rs"
60 | 


--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
1 | The MIT License (MIT)
2 | Copyright (c) 2025 Olle Wreede
3 | 
4 | Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
5 | 
6 | The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
7 | 
8 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
9 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
  1 | # Rusty Slider
  2 | [![Cross-compile](https://github.com/ollej/rusty-slider/actions/workflows/rust.yml/badge.svg?branch=main)](https://github.com/ollej/rusty-slider/actions/workflows/rust.yml)
  3 | 
  4 | A small tool to display markdown files as a slideshow.
  5 | 
  6 | ![Screenshot](https://ollej.github.io/rusty-slider/assets/screenshot.png)
  7 | 
  8 | ## Demo
  9 | 
 10 | Try out Rusty Slider online:
 11 | 
 12 | * [Example slideshows](https://ollej.github.io/rusty-slider/demo/example-slideshows.html).
 13 | 
 14 | ## Download
 15 | 
 16 | Rusty Slider is available for multiple platforms, such as Windows, 
 17 | Linux, MacOS, and the web. Download the latest binary build from github:
 18 | 
 19 | [https://github.com/ollej/rusty-slider/releases/](https://github.com/ollej/rusty-slider/releases/)
 20 | 
 21 | ## Usage
 22 | 
 23 | The file `assets/rusty-slider.md` will be read and split into slides on
 24 | horizontal lines: `---`
 25 | 
 26 | At the moment, the markdown supported is headers, paragraphs, code blocks,
 27 | blockquotes, simple lists and images. Emphasis and strong are supported if the
 28 | theme has italic and bold fonts.
 29 | 
 30 | Heading level 1 can be used as title page, as it will render in the
 31 | middle of the slide and can have a larger font size set by the theme
 32 | option `font_size_header_title`.
 33 | 
 34 | You may use html comments (`<!-- ... -->`) in the markdown for anything you
 35 | don't want to be shown.
 36 | 
 37 | ### Images
 38 | 
 39 | Images can be added to the slideshow by using the image markdown It needs to
 40 | be placed on its own at the start of a line, anything else in the same
 41 | paragraph will be ignored.
 42 | 
 43 | ```
 44 | ![ignored](assets/image.png)
 45 | ```
 46 | 
 47 | ### Background image
 48 | 
 49 | A default background image can be set in the theme file. In addition to this,
 50 | it is possible to override this and set a background image per slide. This is
 51 | done by adding an image markdown tag with `background` as the title text.
 52 | 
 53 | ```
 54 | ![background](assets/new-background-image.png)
 55 | ```
 56 | 
 57 | ### Shortcuts
 58 | 
 59 | Use `Left`/`H` and `Right`/`L` keys or left and right mouse button to move
 60 | back and forth between slides. `Up`/`K`/`Home` keys jump to first slide,
 61 | and `Down`/`J`/`End` keys jump to last slide.
 62 | 
 63 | The `S` key saves the current slide as a PNG on disk.
 64 | 
 65 | On supported platforms `C` copies the first codeblock to the clipboard.
 66 | 
 67 | Use the key `Q` or `Escape` to exit the slideshow.
 68 | 
 69 | Press `?` to show a help screen.
 70 | 
 71 | ### Command line options
 72 | 
 73 | Use flag `--automatic N` when starting the application to automatically switch
 74 | slide every N seconds.
 75 | 
 76 | The flag `--number N` can be used to start the slideshow at that slide.
 77 | 
 78 | ### Run code blocks
 79 | 
 80 | When the command line flag `--enable-code-execution` is used, it is possible
 81 | to run code in code blocks and show the result.
 82 | 
 83 | When a code block with a recognized language is showing on a slide, it can be
 84 | executed by pressing the `enter` key. The output will be added in a new code
 85 | block at the bottom of the slide.
 86 | 
 87 | This feature only works when running locally on a machine that has the
 88 | interpretator for each language installed. Be careful when using this as
 89 | there is no checks done on the shell script.
 90 | 
 91 | Only the first code block on a slide can be executed.
 92 | 
 93 | #### Supported languages
 94 | 
 95 | * Bash
 96 | * Python
 97 | * Perl
 98 | * Ruby
 99 | * Rust
100 | 
101 | ## Theme
102 | 
103 | Create a file called `assets/default-theme.json` to modify default display values.
104 | 
105 | If you make your own theme file, and want to share it, I'd be happy to add it
106 | to the release.
107 | 
108 | ### Transitions
109 | 
110 | These are all the available transitions that can be used in the option
111 | `transition`.
112 | 
113 | * bignoise
114 | * blobs
115 | * checkerboard
116 | * circleswipe
117 | * cubicnoise
118 | * curtainsclose
119 | * curtainsopen
120 | * diagonalleft
121 | * diagonalright
122 | * fan
123 | * halftone
124 | * implode
125 | * lines
126 | * maze
127 | * mosaic
128 | * noise
129 | * plasma
130 | * radialin
131 | * radialout
132 | * smoke
133 | * split
134 | * starburst
135 | * stripes
136 | * swipedown
137 | * swipeleft
138 | * swiperight
139 | * swipeup
140 | * swirl
141 | * triangles
142 | * vortex
143 | * waves
144 | * zebra
145 | 
146 | ### Available code themes
147 | 
148 | The following code themes can be set in the config option `code_theme`:
149 | 
150 | * base16-ocean.dark
151 | * base16-eighties.dark
152 | * base16-mocha.dark
153 | * base16-ocean.light
154 | * InspiredGitHub
155 | * Solarized (dark)
156 | * Solarized (light)
157 | 
158 | ### Example theme.json
159 | 
160 | ```json
161 | {
162 |     "background_image": "assets/background.png",
163 |     "background_color": "#753204",
164 |     "heading_color": "#8f4d22",
165 |     "text_color": "#cccccc",
166 |     "align": "right",
167 |     "font": "assets/Amble-Regular.ttf",
168 |     "font_bold": "assets/Amble-Bold.ttf",
169 |     "font_italic": "assets/Amble-Italic.ttf",
170 |     "font_size_header_title": 100,
171 |     "font_size_header_slides": 80,
172 |     "font_size_text": 40,
173 |     "vertical_offset": 20.0,
174 |     "horizontal_offset": 100.0,
175 |     "line_height": 2.0,
176 |     "blockquote_background_color": "#333333",
177 |     "blockquote_padding": 20.0,
178 |     "blockquote_left_quote": "“",
179 |     "blockquote_right_quote": "„",
180 |     "font_code": "assets/Hack-Regular.ttf",
181 |     "font_code_size": 20,
182 |     "code_line_height": 1.2,
183 |     "code_background_color": "#002b36",
184 |     "code_theme": "Solarized (dark)",
185 |     "code_tab_width": 2,
186 |     "bullet": "• ",
187 |     "shader": true,
188 |     "transition": "swirl"
189 | }
190 | ```
191 | 
192 | ## Command line options
193 | 
194 | The command line options can also be used as URL arguments to the
195 | web demo.
196 | 
197 | ```
198 | A small tool to display markdown files as a slideshow.
199 | 
200 | Usage: rusty_slider [OPTIONS]
201 | 
202 | Options:
203 |   -d, --directory <DIRECTORY>    Path to directory to load slideshow files from [default: assets]
204 |   -s, --slides <SLIDES>          Markdown files with slides text [default: rusty-slider.md]
205 |   -t, --theme <THEME>            File with theme options [default: default-theme.json]
206 |   -a, --automatic <AUTOMATIC>    Automatically switch slides every N seconds [default: 0]
207 |       --demo-transitions         Switch transitions for every slide
208 |   -S, --screenshot <SCREENSHOT>  When taking screenshot, store PNG at this path [default: screenshot.png]
209 |       --enable-code-execution    Enable executing code in code blocks
210 |   -A, --assets <ASSETS>          Path to directory where application files are loaded from [default: assets]
211 |   -n, --number <NUMBER>          Slide number to start at [default: 0]
212 |   -h, --help                     Print help information
213 | ```
214 | 
215 | ## Licenses
216 | 
217 | ### Rusty Slider
218 | 
219 | Copyright 2022 Olle Wreede, released under the MIT License.
220 | 
221 | ### Amble font
222 | 
223 | By Punchcut
224 | Apache License
225 | Version 2.0, January 2004
226 | http://www.apache.org/licenses/
227 | 
228 | ### Hack font
229 | 
230 | Copyright Chris Simpkins
231 | SIL OFL 1.1 and Bitstream Vera v0.00
232 | https://www.fontsquirrel.com/license/hack
233 | 
234 | ### Transition
235 | 
236 | Copyright (c) 2021 TanTanDev
237 | MIT License
238 | 
239 | # Related links
240 | 
241 |  * <a rel="me" href="https://hachyderm.io/@ollej">ollej @ mastodon</a>
242 |  * [Rusty Aquarium](https://ollej.github.io/rusty-aquarium/)
243 |  * [Olle's portfolio](https://olle.wreede.se/)
244 | 


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1 | theme: jekyll-theme-time-machine
2 | google_analytics: G-3C78FHENSR
3 | 


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/assets/advent-of-code.md:
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 1 | # Advent of Code 2022
 2 | 
 3 | ## By Olle Wreede
 4 | 
 5 | ---
 6 | 
 7 | ## Advent of Code
 8 | 
 9 |  * Daily programming puzzles.
10 |  * https://adventofcode.com/2022
11 | 
12 | ---
13 | 
14 | ## Solutions
15 | 
16 |  * Solutions in the Rust programming language.
17 |  * Execute the solutions by hitting `Enter`.
18 |  * This only works when running locally.
19 | 
20 | ---
21 | 
22 | ## Day 1 part 1
23 | 
24 | ```rust
25 | use std::{error::Error, fs};
26 | 
27 | fn main() -> Result<(), Box<dyn Error>> {
28 |     let mut gnomes = vec![];
29 |     let mut calories = 0;
30 |     let input = fs::read_to_string("assets/aoc2022/input1.txt")?;
31 |     for line in input.lines() {
32 |         if line.is_empty() {
33 |             gnomes.push(calories);
34 |             calories = 0;
35 |         } else {
36 |             calories += line.parse::<i32>()?;
37 |         }
38 |     }
39 |     gnomes.push(calories);
40 |     gnomes.sort_by(|a, b| b.partial_cmp(a).unwrap());
41 |     println!("Gnome with most calories: {}", gnomes.first().unwrap());
42 |     Ok(())
43 | }
44 | ```
45 | 
46 | ---
47 | 
48 | ## Day 1 part 2
49 | 
50 | ```rust
51 | use std::{error::Error, fs};
52 | 
53 | fn main() -> Result<(), Box<dyn Error>> {
54 |     let mut gnomes = vec![];
55 |     let mut calories = 0;
56 |     let input = fs::read_to_string("assets/aoc2022/input1.txt")?;
57 |     for line in input.lines() {
58 |         if line.is_empty() {
59 |             gnomes.push(calories);
60 |             calories = 0;
61 |         } else {
62 |             calories += line.parse::<i32>()?;
63 |         }
64 |     }
65 |     gnomes.push(calories);
66 |     gnomes.sort_by(|a, b| b.partial_cmp(a).unwrap());
67 |     let top_three: i32 = gnomes.iter().take(3).sum();
68 |     println!("Calories from top three gnomes: {}", top_three);
69 |     Ok(())
70 | }
71 | ```
72 | 


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/assets/agical.json:
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 1 | {
 2 |     "background_image": "assets/agical.png",
 3 |     "background_color": "#000000",
 4 |     "heading_color": "#B0B0B0",
 5 |     "text_color": "#B0B0B0",
 6 |     "align": "center",
 7 |     "font": "assets/Amble-Regular.ttf",
 8 |     "font_bold": "assets/Amble-Bold.ttf",
 9 |     "font_italic": "assets/Amble-Italic.ttf",
10 |     "font_size_header_title": 100,
11 |     "font_size_header_slides": 60,
12 |     "font_size_text": 40,
13 |     "vertical_offset": 80.0,
14 |     "horizontal_offset": 100.0,
15 |     "line_height": 1.2,
16 |     "blockquote_background_color": "#333333",
17 |     "blockquote_padding": 20.0,
18 |     "blockquote_left_quote": "“",
19 |     "blockquote_right_quote": "„",
20 |     "font_code": "assets/Hack-Regular.ttf",
21 |     "font_code_size": 30,
22 |     "code_line_height": 1.2,
23 |     "code_background_color": "#002b36",
24 |     "code_theme": "Solarized (dark)",
25 |     "code_tab_width": 2,
26 |     "bullet": "• ",
27 |     "shader": false,
28 |     "transition": "split"
29 | }
30 | 


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/assets/application-events.md:
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  1 | # Application Events
  2 | 
  3 | Olle Wreede
  4 | 
  5 | ---
  6 | 
  7 | ## Application Events
  8 | 
  9 | * Publish/subscribe pattern
 10 | * Decouple logic with domain specific events
 11 | * Triggered on actions in the system
 12 | * Subscribed handlers perform asynchronously
 13 | 
 14 | ---
 15 | 
 16 | ## Use Cases
 17 | 
 18 | * Statistics
 19 | * Billing
 20 | * Audit log
 21 | * Extract side-effects (emails, notifications etc)
 22 | * Decoupling between modules
 23 | * Separate external concerns
 24 | 
 25 | ---
 26 | 
 27 | ## Events
 28 | 
 29 | * Described as a verb in past tense
 30 | * Contains domain specfic data
 31 | * Includes no logic
 32 | * Plain Ruby object
 33 | 
 34 | ---
 35 | 
 36 | ## Handlers
 37 | 
 38 | * Subscribes to events
 39 | * Runs asynchronously using Sidekiq
 40 | * Has to be idempotent
 41 | * Contains logic
 42 | 
 43 | ---
 44 | 
 45 | ## ApplicationEvent
 46 | 
 47 | * Events classes extends from Events::ApplicationEvent
 48 | * Includes a payload hash
 49 | * May have one or more categories
 50 | * Categories may require attributes
 51 | * Always includes attributes uuid and created_at
 52 | 
 53 | ---
 54 | 
 55 | ## EventHandler
 56 | 
 57 | * Sub-classes Events::EventHandler
 58 | * Subscribes to events and/or categories
 59 | * May define priority queue (critical/default/low)
 60 | * handle_event method is called with event instance
 61 | 
 62 | ---
 63 | 
 64 | ## Example Event
 65 | 
 66 | ```ruby
 67 | class UserLoggedIn < Events::ApplicationEvent
 68 |   include Events::UserCategory
 69 | 
 70 |   def initialize(attributes = {})
 71 |     super
 72 |     @payload[:login_at] = DateTime.now.utc.to_s
 73 |   end
 74 | 
 75 |   def visit_at
 76 |     @payload[:login_at]
 77 |   end
 78 | end
 79 | ```
 80 | 
 81 | ---
 82 | 
 83 | ## Example Category
 84 | 
 85 | ```ruby
 86 | module Events
 87 |   module UserCategory
 88 |     def user=(user)
 89 |       @payload[:user] = user.uuid
 90 |     end
 91 | 
 92 |     def user
 93 |       User.find_by!(uuid: @payload[:user])
 94 |     end
 95 |   end
 96 | end
 97 | ```
 98 | 
 99 | ---
100 | 
101 | ## Example Handler
102 | 
103 | ```ruby
104 | class TrackLogins < Events::EventHandler
105 |   queue Events::QUEUE_LOW
106 |   attach_to UserLoggedIn
107 | 
108 |   def handle_event(event)
109 |     File.open('/tmp/logins', 'a') do |file|
110 |       file.write("#{user.name} logged in on #{event.login_at}\n")
111 |     end
112 |   end
113 | end
114 | ```
115 | 
116 | ---
117 | 
118 | # Olle Wreede
119 | 
120 | @ollej
121 | 


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/assets/asterisk.md:
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  1 | ## Webbaserad röstmenystyrning
  2 | ## för telefonväxelsystem
  3 | 
  4 | Olle Wreede
  5 | 
  6 | 2007
  7 | 
  8 | ---
  9 | 
 10 | ## Översikt
 11 | 
 12 | * Bakgrund
 13 | * Problembeskrivning
 14 | * PBX
 15 | * Asterisk
 16 | * Asterisks arkitektur
 17 | 
 18 | ---
 19 | 
 20 | ## Översikt fortsättning
 21 | 
 22 | * Dialplan
 23 | * AGI
 24 | * AGI-system
 25 | * Manager API
 26 | * Implementering
 27 | 
 28 | ---
 29 | 
 30 | ## Bakgrund
 31 | 
 32 | * Långa telefonköer
 33 | * Dålig kontroll för kunden
 34 | * Röstmenyer är svåra att använda
 35 | * Statisk info på supportwebbplatser
 36 | * Sammankoppling av webb och samtal
 37 | * Större kontroll
 38 | * Snabbare service
 39 | 
 40 | ---
 41 | 
 42 | ## Problembeskrivning
 43 | 
 44 | * Gamla växlar är svårkonfigurerade
 45 | * Mjukvarubaserad växel – Asterisk
 46 | * Vilka möjligheter finns i Asterisk?
 47 | * Koppla samman webb med telefon
 48 | 
 49 | ---
 50 | 
 51 | ## Asterisk
 52 | 
 53 | * Open Source
 54 | * Lättare att bygga ut
 55 | * Stödjer standarder
 56 | 
 57 | ---
 58 | 
 59 | ## PBX och telefonväxlar
 60 | 
 61 | Private Branch Exchange
 62 | 
 63 | ---
 64 | 
 65 | ## Vanliga funktioner i PBX
 66 | 
 67 | * Fler anslutningar än telefonlinjer
 68 | * Interna samtal
 69 | * Röstbrevlådor
 70 | * Vidarekoppling
 71 | * Väntmusik
 72 | * Vissa hanterar vanlig telefoni och VoIP
 73 | 
 74 | ---
 75 | 
 76 | ## Mjukvarubaserad växel
 77 | 
 78 | <!-- bild saknas -->
 79 | 
 80 | * PC med instickskort och Asterisk
 81 | * Telefonnätet kopplat till PC:n
 82 | * Telefoner kopplade till PC:n
 83 | * IP-telefon inkopplade via ethernet
 84 | 
 85 | ---
 86 | 
 87 | ## Asterisk
 88 | 
 89 | * Mjukvarubaserad
 90 | * Öppen källkod – GPL
 91 | * Utvecklas och supportas av Digium
 92 | * Klarar vanliga telenätet och VoIP
 93 | * Stödjer många olika hårdvaror
 94 | * Konfigurerbar och programmerbar
 95 | * Utvecklas aktivt
 96 | 
 97 | ---
 98 | 
 99 | ## Asterisks arkitektur
100 | 
101 | Kärna för intern funktionalitet
102 | 
103 | ---
104 | 
105 | ## Fyra API:er
106 | 
107 | **Channel API**
108 | 
109 | Hanterar olika typer av telefonkanaler
110 | 
111 | **Application API**
112 | 
113 | Hanterar tjänster som röstbrevlåda och konferenser
114 | 
115 | **Codec Translator API**
116 | 
117 | Laddar codecs för olika ljudformat
118 | 
119 | **File Format API**
120 | 
121 | Läser/Skriver data
122 | 
123 | ---
124 | 
125 | ## Asterisks Dialplan
126 | 
127 | * Innehåller instruktioner för samtal
128 | * Detaljstyr samtalens väg genom systemet
129 | * Listar anknytningar
130 | * Läser knapptryckningar
131 | * Spelar upp ljud
132 | * Startar applikationer
133 | * Kraftfullt och avancerat
134 | 
135 | ---
136 | 
137 | ## Asterisk Gateway Interface
138 | 
139 | * Gränssnitt för kommunikation
140 | 
141 | mellan Asterisks dialplan och applikation
142 | 
143 | * Läser/skriver via FIFO
144 | * Applikationerna startas från dialplan
145 | * AGI-kommandon
146 | 
147 | för läsning av knapptryckningar, uppspelning av ljud osv
148 | 
149 | * Kan skrivas i vilket språk som helst
150 | 
151 | ---
152 | 
153 | ## AGI-system
154 | 
155 | * Klassbibliotek för AGI-program
156 | * Förenklar kommunikationen
157 | * Direkt stöd för AGI-kommandon
158 | 
159 | ---
160 | 
161 | ## AGI finns till många språk
162 | 
163 | * phpAGI
164 | * Asterisk PHP
165 | * Asterisk-java
166 | * Asterisk Perl Library
167 | 
168 | ---
169 | 
170 | ## Manager API
171 | 
172 | * Används av externa klienter
173 | * Visar information om samtal
174 | * Omstyrning av pågående samtal
175 | * Paket skickas via TCP/IP-ström
176 | * Data skickas asynkront
177 | * Stödjer ett flertal olika actions
178 | 
179 | ---
180 | 
181 | ## Implementering
182 | 
183 | * Två delar – AGI-applikation och webbsystem
184 | * Systemen måste kopplas samman
185 | * Kan göras med kod som knappas in på telefonen
186 | * AGI-applikationen tar över samtalet från dialplan
187 | 
188 | ---
189 | 
190 | ## Webbsystem
191 | 
192 | * Funktionalitet motsvarande röstmeny
193 | * Tillåter tydligare information
194 | * Kan kopplas samman med webbsupport
195 | * Visar kod för sammankoppling
196 | * Kan visa status om pågående samtal
197 | * Ifyllning av information under väntan
198 | 
199 | ---
200 | 
201 | ## AGI-applikation
202 | 
203 | * Startas från dialplan
204 | * Läser in webbkod
205 | * Läser data från webb-sessionen
206 | * Synkar samtalet via databas
207 | * Utnyttjar webbsystemets menysystem
208 | * Agerar slav till webbsystemet
209 | 
210 | ---
211 | 
212 | ## Slutledning
213 | 
214 | * Fullt möjligt att utveckla
215 | * Kan kodas i olika språk
216 | * Komplicerat
217 | * Kräver många olika delar av Asterisks API:er
218 | * Kräver inga dyra system
219 | * Kan byggas ut med fler funktioner
220 | 
221 | ---
222 | 
223 | # Olle Wreede
224 | 


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/assets/continuous-deployment.md:
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  1 | # Continuous Deployment
  2 | 
  3 | Deploy every change to production
  4 | 
  5 | ---
  6 | 
  7 | ## Steve Jobs
  8 | 
  9 | > Real artists ship.
 10 | 
 11 | ---
 12 | 
 13 | ## Why?
 14 | 
 15 | ### Why use continuous deployment?
 16 | 
 17 | ---
 18 | 
 19 | ## Why?
 20 | 
 21 | ### Shorter turnaround
 22 | 
 23 | ---
 24 | 
 25 | ## Why?
 26 | 
 27 | ### Minimize risk of large releases
 28 | 
 29 | ---
 30 | 
 31 | ## Why?
 32 | 
 33 | ### No diverging branches
 34 | 
 35 | ---
 36 | 
 37 | ## Why?
 38 | 
 39 | ### Easier to innovate
 40 | 
 41 | ---
 42 | 
 43 | ## Why?
 44 | 
 45 | ### Faster feedback
 46 | 
 47 | ---
 48 | 
 49 | ## Why?
 50 | 
 51 | ### Less unnecessary work
 52 | 
 53 | ---
 54 | 
 55 | ## Why?
 56 | 
 57 | ### Mitigate fear of change
 58 | 
 59 | ---
 60 | 
 61 | ## Salvador Dali
 62 | 
 63 | > Have no fear of perfection -
 64 | > 
 65 | > you'll never reach it.
 66 | 
 67 | ---
 68 | 
 69 | ## How?
 70 | 
 71 | How does continuous deployment work?
 72 | 
 73 | ---
 74 | 
 75 | ## How?
 76 | 
 77 | ### Continuous integration
 78 | 
 79 | ---
 80 | 
 81 | ## How?
 82 | 
 83 | ### Continuous delivery
 84 | 
 85 | ---
 86 | 
 87 | ## How?
 88 | 
 89 | ### Small and independent changes
 90 | 
 91 | ---
 92 | 
 93 | ## How?
 94 | 
 95 | ### Independently deployed applications
 96 | 
 97 | ---
 98 | 
 99 | ## How?
100 | 
101 | ### Automated functional tests
102 | 
103 | ---
104 | 
105 | ## How?
106 | 
107 | ### Monitoring and alerts
108 | 
109 | ---
110 | 
111 | ## How?
112 | 
113 | ### Roll forward instead of rollback
114 | 
115 | ---
116 | 
117 | ## How?
118 | 
119 | ### Feature flags
120 | 
121 | ---
122 | 
123 | ## Benjamin Disraeli
124 | 
125 | > Change is inevitable.
126 | > 
127 | > Change is constant.
128 | 
129 | ---
130 | 
131 | ## Feature flags
132 | 
133 | ### Add new code without branching
134 | 
135 | ---
136 | 
137 | ## Feature flags
138 | 
139 | ### Hide entry point in interface
140 | 
141 | ---
142 | 
143 | ## Feature flags
144 | 
145 | ### Use flags in application code sparingly
146 | 
147 | ---
148 | 
149 | ## Feature flags
150 | 
151 | ### Retire old flags
152 | 
153 | ---
154 | 
155 | ## Feature flags
156 | 
157 | ### Test with flags activated in „release“
158 | 
159 | ### Test with all flags activated
160 | 
161 | ---
162 | 
163 | ## Feature flags
164 | 
165 | ### Flags activated when customer is ready
166 | 
167 | ---
168 | 
169 | ## Feature flags
170 | 
171 | ### Use only when necessary
172 | 
173 | ---
174 | 
175 | ## Feature flags
176 | 
177 | ### Break down features into releasable parts
178 | 
179 | ---
180 | 
181 | ## Summary
182 | 
183 | ---
184 | 
185 | ## Mark Twain
186 | 
187 | > The secret of getting ahead is getting started.
188 | 
189 | ---
190 | 
191 | ## Summary
192 | 
193 | ### Smaller releases more often
194 | 
195 | ---
196 | 
197 | ## Summary
198 | 
199 | ### Use feature flags when needed
200 | 
201 | ---
202 | 
203 | # Olle Wreede
204 | 
205 | @ollej
206 | 


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/assets/default-theme.json:
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 1 | {
 2 |     "background_image": "assets/background.png",
 3 |     "background_color": "#301934",
 4 |     "heading_color": "#b19cd9",
 5 |     "text_color": "#ffffff",
 6 |     "align": "center",
 7 |     "font": "assets/Amble-Regular.ttf",
 8 |     "font_bold": "assets/Amble-Bold.ttf",
 9 |     "font_italic": "assets/Amble-Italic.ttf",
10 |     "font_size_header_title": 100,
11 |     "font_size_header_slides": 80,
12 |     "font_size_text": 50,
13 |     "vertical_offset": 60.0,
14 |     "horizontal_offset": 100.0,
15 |     "line_height": 2.0,
16 |     "blockquote_background_color": "#333333",
17 |     "blockquote_padding": 20.0,
18 |     "blockquote_left_quote": "“",
19 |     "blockquote_right_quote": "„",
20 |     "font_code": "assets/Hack-Regular.ttf",
21 |     "font_code_size": 20,
22 |     "code_line_height": 1.2,
23 |     "code_background_color": "#002b36",
24 |     "code_theme": "Solarized (dark)",
25 |     "code_tab_width": 2,
26 |     "bullet": "• ",
27 |     "shader": true,
28 |     "transition": "starburst"
29 | }
30 | 


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/assets/event-sourcing.md:
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  1 | # Event Sourcing
  2 | 
  3 | ---
  4 | 
  5 | ## Capture state change as a sequence of events
  6 | 
  7 | ---
  8 | 
  9 | ## How we got where we are
 10 | 
 11 | ---
 12 | 
 13 | ## Adjust state to handle retroactive changes
 14 | 
 15 | ---
 16 | 
 17 | ## Query log to get past state
 18 | 
 19 | ---
 20 | 
 21 | ## All change initiated by event objects
 22 | 
 23 | ---
 24 | 
 25 | ## Rebuild state from event log
 26 | 
 27 | ---
 28 | 
 29 | ## Replay events to debug with real data
 30 | 
 31 | ---
 32 | 
 33 | ## Temporal query to find state at any point in time
 34 | 
 35 | ---
 36 | 
 37 | ## Official state is either state or the event log
 38 | 
 39 | ---
 40 | 
 41 | ## State stored in memory
 42 | 
 43 | ## with snapshots stored to disk
 44 | 
 45 | ---
 46 | 
 47 | ## State stored in a database with event log
 48 | 
 49 | ## used for special processing and audits
 50 | 
 51 | ---
 52 | 
 53 | ## Event reversing
 54 | 
 55 | Change as the difference of state
 56 | 
 57 | or
 58 | 
 59 | Store data needed for reversal
 60 | 
 61 | ---
 62 | 
 63 | ## Reprocess events to take advantag
 64 | 
 65 | ## e of new features or bug fixes
 66 | 
 67 | ---
 68 | 
 69 | ## Replay events to test upgrades
 70 | 
 71 | ---
 72 | 
 73 | ## Handle external updates with a gateway which
 74 | 
 75 | ## is aware that the system is processing replays
 76 | 
 77 | ---
 78 | 
 79 | ## External queries store responses in gateway,
 80 | 
 81 | ## or queries for date specific value
 82 | 
 83 | ---
 84 | 
 85 | ## Loosely coupled parallel systems
 86 | 
 87 | ## excellent for horizontal scaling
 88 | 
 89 | ---
 90 | 
 91 | ## Separate reading from writing
 92 | 
 93 | ---
 94 | 
 95 | ## New applications can easily be added
 96 | 
 97 | ## by tapping in to the event stream
 98 | 
 99 | ---
100 | 
101 | # Olle Wreede
102 | 
103 | @ollej
104 | 


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/assets/exalted-beer.json:
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 1 | {
 2 |     "background_image": "assets/exaltedbeer.png",
 3 |     "background_color": "#222222",
 4 |     "heading_color": "#34A5DA",
 5 |     "text_color": "#A6AAA9",
 6 |     "align": "left",
 7 |     "font": "assets/Amble-Regular.ttf",
 8 |     "font_bold": "assets/Amble-Bold.ttf",
 9 |     "font_italic": "assets/Amble-Italic.ttf",
10 |     "font_size_header_title": 120,
11 |     "font_size_header_slides": 80,
12 |     "font_size_text": 40,
13 |     "vertical_offset": 80.0,
14 |     "horizontal_offset": 80.0,
15 |     "line_height": 1.5,
16 |     "blockquote_background_color": "#333333",
17 |     "blockquote_padding": 40.0,
18 |     "blockquote_left_quote": "“",
19 |     "blockquote_right_quote": "„",
20 |     "font_code": "assets/Hack-Regular.ttf",
21 |     "font_code_size": 20,
22 |     "code_line_height": 1.2,
23 |     "code_background_color": "#e0e0e0",
24 |     "code_theme": "base16-ocean.light",
25 |     "code_tab_width": 4,
26 |     "bullet": "» ",
27 |     "shader": false,
28 |     "transition": "split"
29 | }
30 | 


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/assets/homebrewing.md:
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  1 | # Homebrewing
  2 | 
  3 | ---
  4 | 
  5 | ## Types of beer
  6 | 
  7 | * Bottom fermented
  8 | * Top fermented
  9 | * Wild and sour beers
 10 | 
 11 | ---
 12 | 
 13 | ## Bottom fermented
 14 | 
 15 | * Lager, pilsner, bock
 16 | * Cold fermentation
 17 | 
 18 | ---
 19 | 
 20 | ## Top fermented
 21 | 
 22 | * Ale, porter, stout
 23 | * Warm fermentation
 24 | 
 25 | ---
 26 | 
 27 | ## Wild and sour beers
 28 | 
 29 | * Spontaneous fermentation
 30 | * Acidifying bacteria
 31 | 
 32 | ---
 33 | 
 34 | ## Brewing process
 35 | 
 36 | 1. Preparation and cleaning
 37 | 1. Mashing
 38 | 1. Lautering
 39 | 1. Boiling the wort
 40 | 1. Chilling and aeration
 41 | 1. Fermentation
 42 | 1. Bottling
 43 | 
 44 | ---
 45 | 
 46 | ## Mashing
 47 | 
 48 | * Malt, mainly from barley, is crushed
 49 | * Mashed for 60 minutes at 64-68 C to convert starch
 50 | * Single infusion, temperature, or decoction
 51 | * Recirculation through malt bed
 52 | 
 53 | ---
 54 | 
 55 | ## Lautering
 56 | 
 57 | * At the end of the mashing
 58 | * Mash out at 78 C to stop saccharification and ease lautering
 59 | * Sweet wort is extracted by lautering with 78 C water
 60 | 
 61 | ---
 62 | 
 63 | ## Boiling wort
 64 | 
 65 | * Sweet wort is boiled for 60-90 minutes
 66 | * Sterilizes
 67 | * Increases sugar concentration
 68 | * Removes protein
 69 | 
 70 | ---
 71 | 
 72 | ## Adding hops
 73 | 
 74 | * Hops are added in three steps during the boil
 75 | * Bitter hops at 60 minutes before end of boil
 76 | * Flavoring hops boiled for 20-30 minutes
 77 | * Aroma hops is added in the last five minutes
 78 | * Hop stand after boiling
 79 | 
 80 | ---
 81 | 
 82 | ## Chilling 
 83 | 
 84 | * The boiled wort is chilled
 85 | * Aeration to help yeast reproduce
 86 | * Yeast culture added
 87 | * Yeast converts sugar to alcohol
 88 | 
 89 | ---
 90 | 
 91 | ## Fermentation
 92 | 
 93 | * Takes up to two weeks
 94 | * American IPA is dry hopped after primary fermentation
 95 | * Lager ferments at 4-12C
 96 | * Ales ferments at 18-22C
 97 | * Saison ferments at 22-32 C
 98 | 
 99 | ---
100 | 
101 | ## Bottling and carbonation
102 | 
103 | * After 2-3 weeks fermentation is complete
104 | * Priming sugar is mixed with beer
105 | * Beer is added to bottles and capped
106 | * Carbonation takes a couple of weeks
107 | * Some beers are aged longer
108 | * Drink and enjoy!
109 | 
110 | ---
111 | 
112 | ### Plato
113 | 
114 | > He was a wise man who invented beer
115 | 
116 | ---
117 | 
118 | # Olle Wreede
119 | 
120 | ## Exalted Beer
121 | 
122 | www.exalted.beer
123 | 


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/assets/raku.md:
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  1 | # Raku
  2 | 
  3 | An introduction to Raku programming language
  4 | 
  5 | ---
  6 | 
  7 | ## What is Raku?
  8 | 
  9 |  * A language definition
 10 |  * Multiple implementations
 11 |  * Not Perl 5
 12 |  * Used to be Perl 6
 13 |  * Released on December 25th 2015
 14 | 
 15 | ---
 16 | 
 17 | ## Rakudo
 18 | 
 19 | A compiler for Raku with multiple virtual machine backends.
 20 | 
 21 | ---
 22 | 
 23 | ## Backends
 24 | 
 25 |  * MoarVM
 26 |  * JVM
 27 |  * Parrot
 28 | 
 29 | ---
 30 | 
 31 | ## Rakudo Star
 32 | 
 33 | * A "useful" early adopter distribution
 34 | * Includes Rakudo and useful modules.
 35 | 
 36 | ---
 37 | 
 38 | ## Raku features
 39 | 
 40 | A short overview of new features.
 41 | 
 42 | ---
 43 | 
 44 | ## Grammar
 45 | 
 46 |  * Named regexes
 47 |  * New syntax
 48 |  * Grouping regexes with Grammar class
 49 |  * Decorators: regex, token, rule
 50 | 
 51 | ---
 52 | 
 53 | ## Command line scripts
 54 | 
 55 | Built in syntax for command line option parsing.
 56 | 
 57 | ---
 58 | 
 59 | ## Positional command line options
 60 | 
 61 | ```raku
 62 | sub MAIN($x, $y) { ...  }
 63 | sub USAGE() {
 64 |     say "Usage: foo.pl <num1> <num2>";
 65 | }
 66 | 
 67 | # foo.pl 42 1337
 68 | ```
 69 | 
 70 | ---
 71 | 
 72 | ## Named parameters
 73 | 
 74 | ```raku
 75 | sub MAIN(Bool :$verbose) { ... }
 76 | 
 77 | # foo.pl --verbose
 78 | ```
 79 | 
 80 | ---
 81 | 
 82 | ## Options with arguments
 83 | 
 84 | ```raku
 85 | sub MAIN(:$foo = 'bar') { ... }
 86 | 
 87 | # foo.pl --foo=baz
 88 | ```
 89 | 
 90 | ---
 91 | 
 92 | ## Gradual typing
 93 | 
 94 | ```raku
 95 | method foo($bar) { ... }
 96 | ```
 97 | vs
 98 | ```raku
 99 | method foo(Str $bar) { ... }
100 | ```
101 | 
102 | ---
103 | 
104 | ## User defineable operators
105 | 
106 | ```raku
107 | 'bar' ¨  $foo;
108 | ```
109 | ```raku
110 | sub infix:<¨ >($method, $obj) {
111 |     say $obj."$method"();
112 | }
113 | # $foo->bar();
114 | ```
115 | 
116 | ---
117 | 
118 | ## Threading
119 | 
120 |  * Implemented using promises and channels
121 |  * Wraps implementations in different backends.
122 | 
123 | ---
124 | 
125 | ## Promises
126 | 
127 | A synchronization primitive.
128 | ```raku
129 | my $kept_in_10 = Promise.in(10);
130 | ```
131 | 
132 | ---
133 | 
134 | ## Channels
135 | 
136 | Sending results between threads.
137 | 
138 | ```raku
139 | my $dest = Channel.new;
140 | start {
141 |     loop {
142 |         $dest.send('foo');
143 |     }
144 |     $dest.close;
145 | }
146 | ```
147 | 
148 | ---
149 | 
150 | ## Who should use Raku?
151 | 
152 | * Interested in language development
153 | * Grammar parsing
154 | 
155 | ---
156 | 
157 | # Olle Wreede
158 | 
159 | @ollej
160 | 


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/assets/rust.json:
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 1 | {
 2 |     "background_image": "assets/rust.png",
 3 |     "background_color": "#ffffff",
 4 |     "heading_color": "#000000",
 5 |     "text_color": "#000000",
 6 |     "align": "left",
 7 |     "font": "assets/Amble-Regular.ttf",
 8 |     "font_bold": "assets/Amble-Bold.ttf",
 9 |     "font_italic": "assets/Amble-Italic.ttf",
10 |     "font_size_header_title": 100,
11 |     "font_size_header_slides": 80,
12 |     "font_size_text": 40,
13 |     "vertical_offset": 85.0,
14 |     "horizontal_offset": 300.0,
15 |     "line_height": 2.0,
16 |     "blockquote_background_color": "#0b7261",
17 |     "blockquote_padding": 20.0,
18 |     "blockquote_left_quote": "“",
19 |     "blockquote_right_quote": "„",
20 |     "font_code": "assets/Hack-Regular.ttf",
21 |     "font_code_size": 20,
22 |     "code_line_height": 1.2,
23 |     "code_background_color": "#2a3439",
24 |     "code_theme": "Solarized (dark)",
25 |     "code_tab_width": 2,
26 |     "bullet": "• ",
27 |     "shader": false,
28 |     "transition": "radialin"
29 | }
30 | 


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/assets/rusty-aquarium.md:
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 1 | # Rusty Aquarium
 2 | 
 3 | ---
 4 | 
 5 | ## Montioring visualization
 6 | 
 7 | Visualize monitoring data as a serene aquarium
 8 | 
 9 | ---
10 | 
11 | ## Why
12 | 
13 | Static graphs are boring
14 | 
15 | Opaque for the uninitated
16 | 
17 | Looks beautiful
18 | 
19 | ---
20 | 
21 | ## What can it be used for?
22 | 
23 | System monitoring
24 | 
25 | Web request tracking
26 | 
27 | E-commerce metrics
28 | 
29 | ---
30 | 
31 | ## How it works
32 | 
33 | Periodically reads a JSON file with input data
34 | 
35 | Input data defines fish size, speed, and species
36 | 
37 | ---
38 | 
39 | ## Input data
40 | 
41 | The `size`, `speed`, and `bubbles` values are multipliers
42 | 
43 | ```json
44 | {
45 |     "school": [
46 |         { "fish": "crab", "size": 1.0, "speed": 1.0, "bubbles": 1.0 }
47 |     ]
48 | }
49 | ```
50 | 
51 | ---
52 | 
53 | ## Generating data
54 | 
55 | Programs to generate input data is not included
56 | 
57 | System monitoring application included as exemple
58 | 
59 | ---
60 | 
61 | ## Thank you
62 | 
63 | Olle Wreede
64 | 
65 | olle.wreede@agical.se
66 | 
67 | @ollej
68 | 


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/assets/rusty-slider.md:
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  1 | # Rusty Slider
  2 | 
  3 | ---
  4 | 
  5 | ## About
  6 | 
  7 | A small tool to display markdown files as a slideshow.
  8 | 
  9 | Use right key or left mouse button to go to next slide.
 10 | 
 11 | ---
 12 | 
 13 | ## Markdown
 14 | 
 15 | * Slides are written in markdown.
 16 | * Supports headers, paragraphs, lists, blockquotes, code blocks.
 17 | * Also supports images
 18 | * Text between horizontal lines will be a slide.
 19 | 
 20 | ---
 21 | 
 22 | ## Theme
 23 | 
 24 | Colors and fonts can be configured in a json file.
 25 | 
 26 | A background image can also be defined in the theme file.
 27 | 
 28 | ---
 29 | 
 30 | ## Rust + Macroquad
 31 | 
 32 | Developed with Rust and the macroquad game library.
 33 | 
 34 | ---
 35 | 
 36 | ## Cross-platform
 37 | 
 38 | Supports Windows, MacOS, Linux and web.
 39 | 
 40 | ---
 41 | 
 42 | ## Supports images
 43 | 
 44 | ![Image Title](assets/ferris.png)
 45 | 
 46 | ---
 47 | 
 48 | ## Code
 49 | 
 50 | Code blocks will be rendered with syntax highlighting.
 51 | 
 52 | ```rust
 53 | let shader_material = load_material(
 54 | 	shaders::crt::VERTEX,
 55 | 	shaders::crt::FRAGMENT,
 56 | 	Default::default(),
 57 | )
 58 | .unwrap();
 59 | ```
 60 | 
 61 | ---
 62 | 
 63 | ## Run code!
 64 | 
 65 | Execute code blocks by pressing `enter`.
 66 | 
 67 | ```bash
 68 | echo "Hello, World!"
 69 | ```
 70 | 
 71 | ---
 72 | 
 73 | ## Compiling Rust
 74 | 
 75 | Rust code blocks can be compiled and executed as well.
 76 | 
 77 | ```rust
 78 | fn main() {
 79 |     println!("Hello, world!");
 80 | }
 81 | ```
 82 | 
 83 | ---
 84 | 
 85 | ## Blockquotes
 86 | 
 87 | > Blockquotes renders with background color
 88 | >
 89 | > *And fancy quotes.*
 90 | 
 91 | ---
 92 | 
 93 | ## Controls
 94 | 
 95 | Left/right keys switches between previous and next slide.
 96 | 
 97 | Escape quits the slideshow.
 98 | 
 99 | Space toggles the shader.
100 | 
101 | Enter executes code in first code block.
102 | 
103 | ---
104 | 
105 | ## Usage
106 | 
107 | 1. Create a markdown file called `slides.md` in `assets` directory.
108 | 1. Optionally add a `theme.json` in `assets` directory.
109 | 
110 | ---
111 | 
112 | ## Possible improvements
113 | 
114 | Add transitions.
115 | 
116 | Support more shaders.
117 | 
118 | ---
119 | 
120 | ## License
121 | 
122 | **Copyright 2024 Olle Wreede**
123 | 
124 | Released under the MIT license.
125 | 


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/assets/rusty.json:
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 1 | {
 2 |     "background_image": "assets/background.png",
 3 |     "background_color": "#753204",
 4 |     "heading_color": "#e37831",
 5 |     "text_color": "#cccccc",
 6 |     "align": "left",
 7 |     "font": "assets/Amble-Regular.ttf",
 8 |     "font_bold": "assets/Amble-Bold.ttf",
 9 |     "font_italic": "assets/Amble-Italic.ttf",
10 |     "font_size_header_title": 100,
11 |     "font_size_header_slides": 80,
12 |     "font_size_text": 40,
13 |     "vertical_offset": 60.0,
14 |     "horizontal_offset": 100.0,
15 |     "line_height": 1.5,
16 |     "blockquote_background_color": "#333333",
17 |     "blockquote_padding": 20.0,
18 |     "blockquote_left_quote": "“",
19 |     "blockquote_right_quote": "„",
20 |     "font_code": "assets/Hack-Regular.ttf",
21 |     "font_code_size": 20,
22 |     "code_line_height": 1.2,
23 |     "code_background_color": "#e0e0e0",
24 |     "code_theme": "base16-ocean.light",
25 |     "code_tab_width": 4,
26 |     "bullet": "» ",
27 |     "shader": false,
28 |     "transition": "swirl"
29 | }
30 | 


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/assets/uu.json:
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 1 | {
 2 |     "background_image": "assets/uu.png",
 3 |     "background_color": "#ffffff",
 4 |     "heading_color": "#000000",
 5 |     "text_color": "#000000",
 6 |     "align": "left",
 7 |     "font": "assets/Amble-Regular.ttf",
 8 |     "font_bold": "assets/Amble-Bold.ttf",
 9 |     "font_italic": "assets/Amble-Italic.ttf",
10 |     "font_size_header_title": 80,
11 |     "font_size_header_slides": 60,
12 |     "font_size_text": 40,
13 |     "vertical_offset": 60.0,
14 |     "horizontal_offset": 250.0,
15 |     "line_height": 2.0,
16 |     "blockquote_background_color": "#2e2459",
17 |     "blockquote_padding": 20.0,
18 |     "blockquote_left_quote": "“",
19 |     "blockquote_right_quote": "„",
20 |     "font_code": "assets/Hack-Regular.ttf",
21 |     "font_code_size": 20,
22 |     "code_line_height": 1.2,
23 |     "code_background_color": "#2a3439",
24 |     "code_theme": "Solarized (dark)",
25 |     "code_tab_width": 2,
26 |     "bullet": "• ",
27 |     "shader": false,
28 |     "transition": "checkerboard"
29 | }
30 | 


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/assets/vim-emacs.md:
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 1 | # vim + emacs
 2 | 
 3 | ---
 4 | 
 5 | ## vim ~/.emacs
 6 | 
 7 | Changes won't be evaluated
 8 | 
 9 | ---
10 | 
11 | ## vim-emacs plugin
12 | 
13 |  * Select a range
14 |  * Type command `:Emacs`
15 |  * Will evaluate range in Emacs
16 | 
17 | ---
18 | 
19 | ## How?
20 | 
21 |  * Emacs with server
22 |  * Lines sent with `emacsclient --eval`
23 |  * Elisp expressions evaluated
24 |  * Output is returned
25 | 
26 | ---
27 | 
28 | ## Why?
29 | 
30 | Let's end the war!
31 | 
32 | ---
33 | 
34 | ## Where?
35 | 
36 | The vim.emacs plugin is available on GitHub:
37 | 
38 | ```
39 | https://github.com/ollej/vim.emacs
40 | ```
41 | 
42 | ---
43 | 
44 | ## Questions?
45 | 
46 | No?
47 | 
48 | ---
49 | 
50 | ## Hate mail
51 | 
52 | olle@wreede.se
53 | 
54 | @ollej
55 | 


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/bin/build-apk:
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1 | #!/usr/bin/env sh
2 | 
3 | # Build for Android
4 | docker run --rm -v $(pwd)":/root/src" -w /root/src notfl3/cargo-apk cargo apk build
5 | 


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/bin/build-linux:
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 1 | #!/usr/bin/env sh
 2 | 
 3 | set -euo pipefail
 4 | 
 5 | # Build for Linux
 6 | TARGET=x86_64-unknown-linux-gnu
 7 | export CARGO_TARGET_X86_64_UNKNOWN_LINUX_GNU_LINKER=x86_64-unknown-linux-gnu-gcc
 8 | cargo build --release --target $TARGET
 9 | 
10 | # Package Linux tar ball
11 | APP=rusty-slider
12 | tar -zcf "target/$APP-linux.tar.gz" assets/* -C target/$TARGET/release/ $APP
13 | 


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/bin/build-web:
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1 | #!/usr/bin/env sh
2 | 
3 | set -euo pipefail
4 | 
5 | cargo build --release --target wasm32-unknown-unknown
6 | mkdir -p demo
7 | cp target/wasm32-unknown-unknown/release/rusty_slider.wasm demo/
8 | cp -pR assets demo/
9 | 


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/bin/build-win:
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 1 | #!/usr/bin/env sh
 2 | 
 3 | set -euo pipefail
 4 | 
 5 | # Build for windows
 6 | TARGET=x86_64-pc-windows-gnu
 7 | cargo build --release --target $TARGET
 8 | 
 9 | # Package windows zip
10 | APP=rusty_slider
11 | zip -jq target/$APP-win.zip target/$TARGET/release/$APP.exe
12 | zip -ulq target/$APP-win.zip assets/*
13 | 


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/bin/serve-web:
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1 | #!/usr/bin/env sh
2 | 
3 | basic-http-server -a 0.0.0.0:4000 demo
4 | 


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/demo/assets/advent-of-code.md:
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 1 | # Advent of Code 2022
 2 | 
 3 | ## By Olle Wreede
 4 | 
 5 | ---
 6 | 
 7 | ## Advent of Code
 8 | 
 9 |  * Daily programming puzzles.
10 |  * https://adventofcode.com/2022
11 | 
12 | ---
13 | 
14 | ## Solutions
15 | 
16 |  * Solutions in the Rust programming language.
17 |  * Execute the solutions by hitting `Enter`.
18 |  * This only works when running locally.
19 | 
20 | ---
21 | 
22 | ## Day 1 part 1
23 | 
24 | ```rust
25 | use std::{error::Error, fs};
26 | 
27 | fn main() -> Result<(), Box<dyn Error>> {
28 |     let mut gnomes = vec![];
29 |     let mut calories = 0;
30 |     let input = fs::read_to_string("assets/aoc2022/input1.txt")?;
31 |     for line in input.lines() {
32 |         if line.is_empty() {
33 |             gnomes.push(calories);
34 |             calories = 0;
35 |         } else {
36 |             calories += line.parse::<i32>()?;
37 |         }
38 |     }
39 |     gnomes.push(calories);
40 |     gnomes.sort_by(|a, b| b.partial_cmp(a).unwrap());
41 |     println!("Gnome with most calories: {}", gnomes.first().unwrap());
42 |     Ok(())
43 | }
44 | ```
45 | 
46 | ---
47 | 
48 | ## Day 1 part 2
49 | 
50 | ```rust
51 | use std::{error::Error, fs};
52 | 
53 | fn main() -> Result<(), Box<dyn Error>> {
54 |     let mut gnomes = vec![];
55 |     let mut calories = 0;
56 |     let input = fs::read_to_string("assets/aoc2022/input1.txt")?;
57 |     for line in input.lines() {
58 |         if line.is_empty() {
59 |             gnomes.push(calories);
60 |             calories = 0;
61 |         } else {
62 |             calories += line.parse::<i32>()?;
63 |         }
64 |     }
65 |     gnomes.push(calories);
66 |     gnomes.sort_by(|a, b| b.partial_cmp(a).unwrap());
67 |     let top_three: i32 = gnomes.iter().take(3).sum();
68 |     println!("Calories from top three gnomes: {}", top_three);
69 |     Ok(())
70 | }
71 | ```
72 | 


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/demo/assets/agical.json:
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 1 | {
 2 |     "background_image": "assets/agical.png",
 3 |     "background_color": "#000000",
 4 |     "heading_color": "#B0B0B0",
 5 |     "text_color": "#B0B0B0",
 6 |     "align": "center",
 7 |     "font": "assets/Amble-Regular.ttf",
 8 |     "font_bold": "assets/Amble-Bold.ttf",
 9 |     "font_italic": "assets/Amble-Italic.ttf",
10 |     "font_size_header_title": 100,
11 |     "font_size_header_slides": 60,
12 |     "font_size_text": 40,
13 |     "vertical_offset": 80.0,
14 |     "horizontal_offset": 100.0,
15 |     "line_height": 1.2,
16 |     "blockquote_background_color": "#333333",
17 |     "blockquote_padding": 20.0,
18 |     "blockquote_left_quote": "“",
19 |     "blockquote_right_quote": "„",
20 |     "font_code": "assets/Hack-Regular.ttf",
21 |     "font_code_size": 30,
22 |     "code_line_height": 1.2,
23 |     "code_background_color": "#002b36",
24 |     "code_theme": "Solarized (dark)",
25 |     "code_tab_width": 2,
26 |     "bullet": "• ",
27 |     "shader": false,
28 |     "transition": "split"
29 | }
30 | 


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/demo/assets/application-events.md:
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  1 | # Application Events
  2 | 
  3 | Olle Wreede
  4 | 
  5 | ---
  6 | 
  7 | ## Application Events
  8 | 
  9 | * Publish/subscribe pattern
 10 | * Decouple logic with domain specific events
 11 | * Triggered on actions in the system
 12 | * Subscribed handlers perform asynchronously
 13 | 
 14 | ---
 15 | 
 16 | ## Use Cases
 17 | 
 18 | * Statistics
 19 | * Billing
 20 | * Audit log
 21 | * Extract side-effects (emails, notifications etc)
 22 | * Decoupling between modules
 23 | * Separate external concerns
 24 | 
 25 | ---
 26 | 
 27 | ## Events
 28 | 
 29 | * Described as a verb in past tense
 30 | * Contains domain specfic data
 31 | * Includes no logic
 32 | * Plain Ruby object
 33 | 
 34 | ---
 35 | 
 36 | ## Handlers
 37 | 
 38 | * Subscribes to events
 39 | * Runs asynchronously using Sidekiq
 40 | * Has to be idempotent
 41 | * Contains logic
 42 | 
 43 | ---
 44 | 
 45 | ## ApplicationEvent
 46 | 
 47 | * Events classes extends from Events::ApplicationEvent
 48 | * Includes a payload hash
 49 | * May have one or more categories
 50 | * Categories may require attributes
 51 | * Always includes attributes uuid and created_at
 52 | 
 53 | ---
 54 | 
 55 | ## EventHandler
 56 | 
 57 | * Sub-classes Events::EventHandler
 58 | * Subscribes to events and/or categories
 59 | * May define priority queue (critical/default/low)
 60 | * handle_event method is called with event instance
 61 | 
 62 | ---
 63 | 
 64 | ## Example Event
 65 | 
 66 | ```ruby
 67 | class UserLoggedIn < Events::ApplicationEvent
 68 |   include Events::UserCategory
 69 | 
 70 |   def initialize(attributes = {})
 71 |     super
 72 |     @payload[:login_at] = DateTime.now.utc.to_s
 73 |   end
 74 | 
 75 |   def visit_at
 76 |     @payload[:login_at]
 77 |   end
 78 | end
 79 | ```
 80 | 
 81 | ---
 82 | 
 83 | ## Example Category
 84 | 
 85 | ```ruby
 86 | module Events
 87 |   module UserCategory
 88 |     def user=(user)
 89 |       @payload[:user] = user.uuid
 90 |     end
 91 | 
 92 |     def user
 93 |       User.find_by!(uuid: @payload[:user])
 94 |     end
 95 |   end
 96 | end
 97 | ```
 98 | 
 99 | ---
100 | 
101 | ## Example Handler
102 | 
103 | ```ruby
104 | class TrackLogins < Events::EventHandler
105 |   queue Events::QUEUE_LOW
106 |   attach_to UserLoggedIn
107 | 
108 |   def handle_event(event)
109 |     File.open('/tmp/logins', 'a') do |file|
110 |       file.write("#{user.name} logged in on #{event.login_at}\n")
111 |     end
112 |   end
113 | end
114 | ```
115 | 
116 | ---
117 | 
118 | # Olle Wreede
119 | 
120 | @ollej
121 | 


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/demo/assets/asterisk.md:
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  1 | ## Webbaserad röstmenystyrning
  2 | ## för telefonväxelsystem
  3 | 
  4 | Olle Wreede
  5 | 
  6 | 2007
  7 | 
  8 | ---
  9 | 
 10 | ## Översikt
 11 | 
 12 | * Bakgrund
 13 | * Problembeskrivning
 14 | * PBX
 15 | * Asterisk
 16 | * Asterisks arkitektur
 17 | 
 18 | ---
 19 | 
 20 | ## Översikt fortsättning
 21 | 
 22 | * Dialplan
 23 | * AGI
 24 | * AGI-system
 25 | * Manager API
 26 | * Implementering
 27 | 
 28 | ---
 29 | 
 30 | ## Bakgrund
 31 | 
 32 | * Långa telefonköer
 33 | * Dålig kontroll för kunden
 34 | * Röstmenyer är svåra att använda
 35 | * Statisk info på supportwebbplatser
 36 | * Sammankoppling av webb och samtal
 37 | * Större kontroll
 38 | * Snabbare service
 39 | 
 40 | ---
 41 | 
 42 | ## Problembeskrivning
 43 | 
 44 | * Gamla växlar är svårkonfigurerade
 45 | * Mjukvarubaserad växel – Asterisk
 46 | * Vilka möjligheter finns i Asterisk?
 47 | * Koppla samman webb med telefon
 48 | 
 49 | ---
 50 | 
 51 | ## Asterisk
 52 | 
 53 | * Open Source
 54 | * Lättare att bygga ut
 55 | * Stödjer standarder
 56 | 
 57 | ---
 58 | 
 59 | ## PBX och telefonväxlar
 60 | 
 61 | Private Branch Exchange
 62 | 
 63 | ---
 64 | 
 65 | ## Vanliga funktioner i PBX
 66 | 
 67 | * Fler anslutningar än telefonlinjer
 68 | * Interna samtal
 69 | * Röstbrevlådor
 70 | * Vidarekoppling
 71 | * Väntmusik
 72 | * Vissa hanterar vanlig telefoni och VoIP
 73 | 
 74 | ---
 75 | 
 76 | ## Mjukvarubaserad växel
 77 | 
 78 | <!-- bild saknas -->
 79 | 
 80 | * PC med instickskort och Asterisk
 81 | * Telefonnätet kopplat till PC:n
 82 | * Telefoner kopplade till PC:n
 83 | * IP-telefon inkopplade via ethernet
 84 | 
 85 | ---
 86 | 
 87 | ## Asterisk
 88 | 
 89 | * Mjukvarubaserad
 90 | * Öppen källkod – GPL
 91 | * Utvecklas och supportas av Digium
 92 | * Klarar vanliga telenätet och VoIP
 93 | * Stödjer många olika hårdvaror
 94 | * Konfigurerbar och programmerbar
 95 | * Utvecklas aktivt
 96 | 
 97 | ---
 98 | 
 99 | ## Asterisks arkitektur
100 | 
101 | Kärna för intern funktionalitet
102 | 
103 | ---
104 | 
105 | ## Fyra API:er
106 | 
107 | **Channel API**
108 | 
109 | Hanterar olika typer av telefonkanaler
110 | 
111 | **Application API**
112 | 
113 | Hanterar tjänster som röstbrevlåda och konferenser
114 | 
115 | **Codec Translator API**
116 | 
117 | Laddar codecs för olika ljudformat
118 | 
119 | **File Format API**
120 | 
121 | Läser/Skriver data
122 | 
123 | ---
124 | 
125 | ## Asterisks Dialplan
126 | 
127 | * Innehåller instruktioner för samtal
128 | * Detaljstyr samtalens väg genom systemet
129 | * Listar anknytningar
130 | * Läser knapptryckningar
131 | * Spelar upp ljud
132 | * Startar applikationer
133 | * Kraftfullt och avancerat
134 | 
135 | ---
136 | 
137 | ## Asterisk Gateway Interface
138 | 
139 | * Gränssnitt för kommunikation
140 | 
141 | mellan Asterisks dialplan och applikation
142 | 
143 | * Läser/skriver via FIFO
144 | * Applikationerna startas från dialplan
145 | * AGI-kommandon
146 | 
147 | för läsning av knapptryckningar, uppspelning av ljud osv
148 | 
149 | * Kan skrivas i vilket språk som helst
150 | 
151 | ---
152 | 
153 | ## AGI-system
154 | 
155 | * Klassbibliotek för AGI-program
156 | * Förenklar kommunikationen
157 | * Direkt stöd för AGI-kommandon
158 | 
159 | ---
160 | 
161 | ## AGI finns till många språk
162 | 
163 | * phpAGI
164 | * Asterisk PHP
165 | * Asterisk-java
166 | * Asterisk Perl Library
167 | 
168 | ---
169 | 
170 | ## Manager API
171 | 
172 | * Används av externa klienter
173 | * Visar information om samtal
174 | * Omstyrning av pågående samtal
175 | * Paket skickas via TCP/IP-ström
176 | * Data skickas asynkront
177 | * Stödjer ett flertal olika actions
178 | 
179 | ---
180 | 
181 | ## Implementering
182 | 
183 | * Två delar – AGI-applikation och webbsystem
184 | * Systemen måste kopplas samman
185 | * Kan göras med kod som knappas in på telefonen
186 | * AGI-applikationen tar över samtalet från dialplan
187 | 
188 | ---
189 | 
190 | ## Webbsystem
191 | 
192 | * Funktionalitet motsvarande röstmeny
193 | * Tillåter tydligare information
194 | * Kan kopplas samman med webbsupport
195 | * Visar kod för sammankoppling
196 | * Kan visa status om pågående samtal
197 | * Ifyllning av information under väntan
198 | 
199 | ---
200 | 
201 | ## AGI-applikation
202 | 
203 | * Startas från dialplan
204 | * Läser in webbkod
205 | * Läser data från webb-sessionen
206 | * Synkar samtalet via databas
207 | * Utnyttjar webbsystemets menysystem
208 | * Agerar slav till webbsystemet
209 | 
210 | ---
211 | 
212 | ## Slutledning
213 | 
214 | * Fullt möjligt att utveckla
215 | * Kan kodas i olika språk
216 | * Komplicerat
217 | * Kräver många olika delar av Asterisks API:er
218 | * Kräver inga dyra system
219 | * Kan byggas ut med fler funktioner
220 | 
221 | ---
222 | 
223 | # Olle Wreede
224 | 


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  1 | # Continuous Deployment
  2 | 
  3 | Deploy every change to production
  4 | 
  5 | ---
  6 | 
  7 | ## Steve Jobs
  8 | 
  9 | > Real artists ship.
 10 | 
 11 | ---
 12 | 
 13 | ## Why?
 14 | 
 15 | ### Why use continuous deployment?
 16 | 
 17 | ---
 18 | 
 19 | ## Why?
 20 | 
 21 | ### Shorter turnaround
 22 | 
 23 | ---
 24 | 
 25 | ## Why?
 26 | 
 27 | ### Minimize risk of large releases
 28 | 
 29 | ---
 30 | 
 31 | ## Why?
 32 | 
 33 | ### No diverging branches
 34 | 
 35 | ---
 36 | 
 37 | ## Why?
 38 | 
 39 | ### Easier to innovate
 40 | 
 41 | ---
 42 | 
 43 | ## Why?
 44 | 
 45 | ### Faster feedback
 46 | 
 47 | ---
 48 | 
 49 | ## Why?
 50 | 
 51 | ### Less unnecessary work
 52 | 
 53 | ---
 54 | 
 55 | ## Why?
 56 | 
 57 | ### Mitigate fear of change
 58 | 
 59 | ---
 60 | 
 61 | ## Salvador Dali
 62 | 
 63 | > Have no fear of perfection -
 64 | > 
 65 | > you'll never reach it.
 66 | 
 67 | ---
 68 | 
 69 | ## How?
 70 | 
 71 | How does continuous deployment work?
 72 | 
 73 | ---
 74 | 
 75 | ## How?
 76 | 
 77 | ### Continuous integration
 78 | 
 79 | ---
 80 | 
 81 | ## How?
 82 | 
 83 | ### Continuous delivery
 84 | 
 85 | ---
 86 | 
 87 | ## How?
 88 | 
 89 | ### Small and independent changes
 90 | 
 91 | ---
 92 | 
 93 | ## How?
 94 | 
 95 | ### Independently deployed applications
 96 | 
 97 | ---
 98 | 
 99 | ## How?
100 | 
101 | ### Automated functional tests
102 | 
103 | ---
104 | 
105 | ## How?
106 | 
107 | ### Monitoring and alerts
108 | 
109 | ---
110 | 
111 | ## How?
112 | 
113 | ### Roll forward instead of rollback
114 | 
115 | ---
116 | 
117 | ## How?
118 | 
119 | ### Feature flags
120 | 
121 | ---
122 | 
123 | ## Benjamin Disraeli
124 | 
125 | > Change is inevitable.
126 | > 
127 | > Change is constant.
128 | 
129 | ---
130 | 
131 | ## Feature flags
132 | 
133 | ### Add new code without branching
134 | 
135 | ---
136 | 
137 | ## Feature flags
138 | 
139 | ### Hide entry point in interface
140 | 
141 | ---
142 | 
143 | ## Feature flags
144 | 
145 | ### Use flags in application code sparingly
146 | 
147 | ---
148 | 
149 | ## Feature flags
150 | 
151 | ### Retire old flags
152 | 
153 | ---
154 | 
155 | ## Feature flags
156 | 
157 | ### Test with flags activated in „release“
158 | 
159 | ### Test with all flags activated
160 | 
161 | ---
162 | 
163 | ## Feature flags
164 | 
165 | ### Flags activated when customer is ready
166 | 
167 | ---
168 | 
169 | ## Feature flags
170 | 
171 | ### Use only when necessary
172 | 
173 | ---
174 | 
175 | ## Feature flags
176 | 
177 | ### Break down features into releasable parts
178 | 
179 | ---
180 | 
181 | ## Summary
182 | 
183 | ---
184 | 
185 | ## Mark Twain
186 | 
187 | > The secret of getting ahead is getting started.
188 | 
189 | ---
190 | 
191 | ## Summary
192 | 
193 | ### Smaller releases more often
194 | 
195 | ---
196 | 
197 | ## Summary
198 | 
199 | ### Use feature flags when needed
200 | 
201 | ---
202 | 
203 | # Olle Wreede
204 | 
205 | @ollej
206 | 


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 1 | {
 2 |     "background_image": "assets/background.png",
 3 |     "background_color": "#301934",
 4 |     "heading_color": "#b19cd9",
 5 |     "text_color": "#ffffff",
 6 |     "align": "center",
 7 |     "font": "assets/Amble-Regular.ttf",
 8 |     "font_bold": "assets/Amble-Bold.ttf",
 9 |     "font_italic": "assets/Amble-Italic.ttf",
10 |     "font_size_header_title": 100,
11 |     "font_size_header_slides": 80,
12 |     "font_size_text": 50,
13 |     "vertical_offset": 60.0,
14 |     "horizontal_offset": 100.0,
15 |     "line_height": 2.0,
16 |     "blockquote_background_color": "#333333",
17 |     "blockquote_padding": 20.0,
18 |     "blockquote_left_quote": "“",
19 |     "blockquote_right_quote": "„",
20 |     "font_code": "assets/Hack-Regular.ttf",
21 |     "font_code_size": 20,
22 |     "code_line_height": 1.2,
23 |     "code_background_color": "#002b36",
24 |     "code_theme": "Solarized (dark)",
25 |     "code_tab_width": 2,
26 |     "bullet": "• ",
27 |     "shader": true,
28 |     "transition": "starburst"
29 | }
30 | 


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  1 | # Event Sourcing
  2 | 
  3 | ---
  4 | 
  5 | ## Capture state change as a sequence of events
  6 | 
  7 | ---
  8 | 
  9 | ## How we got where we are
 10 | 
 11 | ---
 12 | 
 13 | ## Adjust state to handle retroactive changes
 14 | 
 15 | ---
 16 | 
 17 | ## Query log to get past state
 18 | 
 19 | ---
 20 | 
 21 | ## All change initiated by event objects
 22 | 
 23 | ---
 24 | 
 25 | ## Rebuild state from event log
 26 | 
 27 | ---
 28 | 
 29 | ## Replay events to debug with real data
 30 | 
 31 | ---
 32 | 
 33 | ## Temporal query to find state at any point in time
 34 | 
 35 | ---
 36 | 
 37 | ## Official state is either state or the event log
 38 | 
 39 | ---
 40 | 
 41 | ## State stored in memory
 42 | 
 43 | ## with snapshots stored to disk
 44 | 
 45 | ---
 46 | 
 47 | ## State stored in a database with event log
 48 | 
 49 | ## used for special processing and audits
 50 | 
 51 | ---
 52 | 
 53 | ## Event reversing
 54 | 
 55 | Change as the difference of state
 56 | 
 57 | or
 58 | 
 59 | Store data needed for reversal
 60 | 
 61 | ---
 62 | 
 63 | ## Reprocess events to take advantag
 64 | 
 65 | ## e of new features or bug fixes
 66 | 
 67 | ---
 68 | 
 69 | ## Replay events to test upgrades
 70 | 
 71 | ---
 72 | 
 73 | ## Handle external updates with a gateway which
 74 | 
 75 | ## is aware that the system is processing replays
 76 | 
 77 | ---
 78 | 
 79 | ## External queries store responses in gateway,
 80 | 
 81 | ## or queries for date specific value
 82 | 
 83 | ---
 84 | 
 85 | ## Loosely coupled parallel systems
 86 | 
 87 | ## excellent for horizontal scaling
 88 | 
 89 | ---
 90 | 
 91 | ## Separate reading from writing
 92 | 
 93 | ---
 94 | 
 95 | ## New applications can easily be added
 96 | 
 97 | ## by tapping in to the event stream
 98 | 
 99 | ---
100 | 
101 | # Olle Wreede
102 | 
103 | @ollej
104 | 


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 1 | {
 2 |     "background_image": "assets/exaltedbeer.png",
 3 |     "background_color": "#222222",
 4 |     "heading_color": "#34A5DA",
 5 |     "text_color": "#A6AAA9",
 6 |     "align": "left",
 7 |     "font": "assets/Amble-Regular.ttf",
 8 |     "font_bold": "assets/Amble-Bold.ttf",
 9 |     "font_italic": "assets/Amble-Italic.ttf",
10 |     "font_size_header_title": 120,
11 |     "font_size_header_slides": 80,
12 |     "font_size_text": 40,
13 |     "vertical_offset": 80.0,
14 |     "horizontal_offset": 80.0,
15 |     "line_height": 1.5,
16 |     "blockquote_background_color": "#333333",
17 |     "blockquote_padding": 40.0,
18 |     "blockquote_left_quote": "“",
19 |     "blockquote_right_quote": "„",
20 |     "font_code": "assets/Hack-Regular.ttf",
21 |     "font_code_size": 20,
22 |     "code_line_height": 1.2,
23 |     "code_background_color": "#e0e0e0",
24 |     "code_theme": "base16-ocean.light",
25 |     "code_tab_width": 4,
26 |     "bullet": "» ",
27 |     "shader": false,
28 |     "transition": "split"
29 | }
30 | 


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  1 | # Homebrewing
  2 | 
  3 | ---
  4 | 
  5 | ## Types of beer
  6 | 
  7 | * Bottom fermented
  8 | * Top fermented
  9 | * Wild and sour beers
 10 | 
 11 | ---
 12 | 
 13 | ## Bottom fermented
 14 | 
 15 | * Lager, pilsner, bock
 16 | * Cold fermentation
 17 | 
 18 | ---
 19 | 
 20 | ## Top fermented
 21 | 
 22 | * Ale, porter, stout
 23 | * Warm fermentation
 24 | 
 25 | ---
 26 | 
 27 | ## Wild and sour beers
 28 | 
 29 | * Spontaneous fermentation
 30 | * Acidifying bacteria
 31 | 
 32 | ---
 33 | 
 34 | ## Brewing process
 35 | 
 36 | 1. Preparation and cleaning
 37 | 1. Mashing
 38 | 1. Lautering
 39 | 1. Boiling the wort
 40 | 1. Chilling and aeration
 41 | 1. Fermentation
 42 | 1. Bottling
 43 | 
 44 | ---
 45 | 
 46 | ## Mashing
 47 | 
 48 | * Malt, mainly from barley, is crushed
 49 | * Mashed for 60 minutes at 64-68 C to convert starch
 50 | * Single infusion, temperature, or decoction
 51 | * Recirculation through malt bed
 52 | 
 53 | ---
 54 | 
 55 | ## Lautering
 56 | 
 57 | * At the end of the mashing
 58 | * Mash out at 78 C to stop saccharification and ease lautering
 59 | * Sweet wort is extracted by lautering with 78 C water
 60 | 
 61 | ---
 62 | 
 63 | ## Boiling wort
 64 | 
 65 | * Sweet wort is boiled for 60-90 minutes
 66 | * Sterilizes
 67 | * Increases sugar concentration
 68 | * Removes protein
 69 | 
 70 | ---
 71 | 
 72 | ## Adding hops
 73 | 
 74 | * Hops are added in three steps during the boil
 75 | * Bitter hops at 60 minutes before end of boil
 76 | * Flavoring hops boiled for 20-30 minutes
 77 | * Aroma hops is added in the last five minutes
 78 | * Hop stand after boiling
 79 | 
 80 | ---
 81 | 
 82 | ## Chilling 
 83 | 
 84 | * The boiled wort is chilled
 85 | * Aeration to help yeast reproduce
 86 | * Yeast culture added
 87 | * Yeast converts sugar to alcohol
 88 | 
 89 | ---
 90 | 
 91 | ## Fermentation
 92 | 
 93 | * Takes up to two weeks
 94 | * American IPA is dry hopped after primary fermentation
 95 | * Lager ferments at 4-12C
 96 | * Ales ferments at 18-22C
 97 | * Saison ferments at 22-32 C
 98 | 
 99 | ---
100 | 
101 | ## Bottling and carbonation
102 | 
103 | * After 2-3 weeks fermentation is complete
104 | * Priming sugar is mixed with beer
105 | * Beer is added to bottles and capped
106 | * Carbonation takes a couple of weeks
107 | * Some beers are aged longer
108 | * Drink and enjoy!
109 | 
110 | ---
111 | 
112 | ### Plato
113 | 
114 | > He was a wise man who invented beer
115 | 
116 | ---
117 | 
118 | # Olle Wreede
119 | 
120 | ## Exalted Beer
121 | 
122 | www.exalted.beer
123 | 


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  1 | # Macroquad
  2 | 
  3 | ---
  4 | 
  5 | ## Vad är Macroquad?
  6 | 
  7 | Ett enkelt och lättanvänt spelramverk i Rust
  8 | 
  9 | Innehåller allt för att bygga ett 2D-spel!
 10 | 
 11 | Utvecklas av Fedor Logachev
 12 | 
 13 | https://macroquad.rs
 14 | 
 15 | ---
 16 | 
 17 | ## Designmål
 18 | 
 19 | Några av Macroquads designmål:
 20 | 
 21 |  * Snabb kompilering
 22 |  * Korsplattform
 23 |  * Stödjer budgetenheter
 24 |  * Hackbar
 25 | 
 26 | ---
 27 | 
 28 | ## Allt inkluderat
 29 | 
 30 |  * 2D-rendering
 31 |  * Audio
 32 |  * Immediate mode UI
 33 |  * Bygg för Android/iOS/WASM med endast ett kommando
 34 | 
 35 | ---
 36 | 
 37 | ## Baserat på Miniquad
 38 | 
 39 | Miniquad är ett minimalt grafikabstraktionslager
 40 | 
 41 | ---
 42 | 
 43 | ## Stödda plattformar
 44 | 
 45 |  * Windows
 46 |  * MacOS
 47 |  * Linux
 48 |  * HTML5 / WebAssembly
 49 |  * Android
 50 |  * iOS
 51 | 
 52 | ---
 53 | 
 54 | ## Minimalt exempel
 55 | 
 56 | ```rust
 57 | use macroquad::prelude::*;
 58 | 
 59 | #[macroquad::main("Macroquad")]
 60 | async fn main() {
 61 |     loop {
 62 |         clear_background(LIGHTGRAY);
 63 |         next_frame().await
 64 |     }
 65 | }
 66 | ```
 67 | 
 68 | ---
 69 | 
 70 | ## Minimalt exempel
 71 | 
 72 |  * Importera macroquad
 73 |  * Macro för main-funktionen
 74 |  * Asynkron main-funktion
 75 |  * Rensa bakgrunden i början av loopen
 76 |  * Avsluta med att vänta på nästa frame
 77 | 
 78 | ---
 79 | 
 80 | ## Fönsterkonfiguration
 81 | 
 82 |  * Macrot skapar ett fönster.
 83 |  * Det går även att konfigurera fönstret.
 84 |  * Använd en funktion som returnerar `Conf`.
 85 |  * Ändra storlek, fullskärm, titel med mera
 86 | 
 87 | ---
 88 | 
 89 | ## Fönsterkonfiguration
 90 | 
 91 | ```rust
 92 | use macroquad::prelude::*;
 93 | 
 94 | fn window_conf() -> Conf {
 95 |     Conf {
 96 |         window_title: "Window name".to_owned(),
 97 |         fullscreen: false,
 98 |         high_dpi: true,
 99 |         window_resizable: true,
100 |         window_width: 640,
101 |         window_height: 480,
102 |         ..Default::default()
103 |     }
104 | }
105 | 
106 | #[macroquad::main(window_conf)]
107 | async fn main() {
108 |     loop {
109 |         clear_background(LIGHTGRAY);
110 |         next_frame().await
111 |     }
112 | }
113 | ```
114 | 
115 | ---
116 | 
117 | ## Visa bild
118 | 
119 |  * Ladda bild med `load_texture()`
120 |  * Stödjer endast PNG
121 |  * Visa bild med `draw_texture()`
122 |  * Placera med `screen_width()` och `screen_height()`
123 |  * Använd bakgrundsfärgen `WHITE`
124 |  * Laddar bilden asynkront
125 |  * Fungerar båda lokalt och via WebAssembly
126 | 
127 | ---
128 | 
129 | ## Visa bild
130 | 
131 | ```rust
132 | use macroquad::prelude::*;
133 | 
134 | #[macroquad::main("Bild")]
135 | async fn main() {
136 |     let texture: Texture2D = load_texture("examples/ferris.png").await.unwrap();
137 |     loop {
138 |         clear_background(LIGHTGRAY);
139 |         draw_texture(
140 |             texture,
141 |             screen_width() / 2. - texture.width() / 2.,
142 |             screen_height() / 2. - texture.height() / 2.,
143 |             WHITE,
144 |         );
145 |         next_frame().await
146 |     }
147 | }
148 | ```
149 | 
150 | ---
151 | 
152 | ## Texture API
153 | 
154 | Metoder för att arbeta med texturer.
155 | 
156 |  * `build_textures_atlas()`
157 |  * `draw_texture( ... )`
158 |  * `draw_texture_ex( ... )`
159 |  * `get_screen_data()`
160 |  * `load_image( ... )`
161 |  * `load_texture( ... )`
162 |  * `render_target( ... )`
163 | 
164 | ---
165 | 
166 | ## Rita
167 | 
168 | Stöd för att rita enklare figurer med bakgrundsfärg.
169 | 
170 |  * Cirkel
171 |  * Rektangel
172 |  * Linje
173 |  * Hexagon
174 |  * Triangel
175 |  * Polygon
176 | 
177 | ---
178 | 
179 | ## Rita
180 | 
181 | ```rust
182 | use macroquad::prelude::*;
183 | 
184 | #[macroquad::main("Rita")]
185 | async fn main() {
186 |     loop {
187 |         clear_background(LIGHTGRAY);
188 |         draw_rectangle(screen_width() / 2.0 - 60.0, 100.0, 120.0, 60.0, GREEN);
189 |         next_frame().await
190 |     }
191 | }
192 | ```
193 | 
194 | ---
195 | 
196 | ## Shapes API
197 | 
198 |  * `draw_circle(x: f32, y: f32, r: f32, color: Color)`
199 |  * `draw_hexagon( ... )`
200 |  * `draw_line( ... )`
201 |  * `draw_poly( ... )`
202 |  * `draw_rectangle( ... )`
203 |  * `draw_triangle( ... )`
204 | 
205 | ---
206 | 
207 | ## Rita
208 | 
209 | Rita figurer med konturer.
210 | 
211 | ---
212 | 
213 | ## Shapes API lines
214 | 
215 |  * `draw_circle_lines( ... )`
216 |  * `draw_poly_lines( ... )`
217 |  * `draw_rectangle_lines( ... )`
218 |  * `draw_triangle_lines( ... )`
219 | 
220 | ---
221 | 
222 | ### Text
223 | 
224 | Fonter kan användas för att visa text
225 | 
226 |  * Ladda font med `load_ttf_font()`
227 |  * Använd `measure_text()` för att räkna ut baslinjen
228 |  * Visa texten med `draw_text()` eller `draw_text_ex()`
229 |  * Y-koordinaten börjar uppifrån
230 |  * Y-koordinaten anger baslinjen
231 | 
232 | ---
233 | 
234 | ## Text
235 | 
236 | ```rust
237 | use macroquad::prelude::*;
238 | 
239 | #[macroquad::main("Text")]
240 | async fn main() {
241 |     loop {
242 |         clear_background(LIGHTGRAY);
243 |         let text = "Hej världen!";
244 |         let font_size = 30;
245 |         let font = load_ttf_font("examples/Hack-Regular.ttf").await.ok();
246 |         let dim = measure_text(text, font, font_size, 1.0);
247 |         draw_text(text, 30.0, dim.offset_y, font_size as f32, DARKGRAY);
248 |         next_frame().await
249 |     }
250 | }
251 | ```
252 | 
253 | ---
254 | 
255 | ### Text API
256 | 
257 |  * `camera_font_scale( ... )`
258 |  * `draw_text( ... )`
259 |  * `draw_text_ex( ... )`
260 |  * `get_text_center( ... )`
261 |  * `load_ttf_font( ... )`
262 |  * `load_ttf_font_from_bytes( ... )`
263 |  * `measure_text( ... )`
264 | 
265 | ---
266 | 
267 | ## Hantera input
268 | 
269 | ```rust
270 | use macroquad::prelude::*;
271 | 
272 | #[macroquad::main("Input")]
273 | async fn main() {
274 |     let mut x = screen_width() / 2.0;
275 |     let mut y = screen_height() / 2.0;
276 | 
277 |     loop {
278 |         clear_background(LIGHTGRAY);
279 | 
280 |         if is_key_down(KeyCode::Right) { x += 1.0; }
281 |         if is_key_down(KeyCode::Left) { x -= 1.0; }
282 |         if is_key_down(KeyCode::Down) { y += 1.0; }
283 |         if is_key_down(KeyCode::Up) { y -= 1.0; }
284 | 
285 |         draw_circle(x, y, 15.0, YELLOW);
286 |         next_frame().await
287 |     }
288 | }
289 | ```
290 | 
291 | ---
292 | 
293 | ## Tangentbordsinput
294 | 
295 |  * `get_char_pressed() -> Option<char>`
296 |  * `get_last_key_pressed() -> Option<KeyCode>`
297 |  * `is_key_down(key_code: KeyCode)`
298 |  * `is_key_pressed(key_code: KeyCode)`
299 |  * `is_key_released(key_code: KeyCode)`
300 | 
301 | ---
302 | 
303 | ## KeyCode enum
304 | 
305 |  * `Space`
306 |  * `Up`
307 |  * `Down`
308 |  * `Left`
309 |  * `Right`
310 |  * `A .. Z`
311 |  * `0 .. 9`
312 |  * ...
313 | 
314 | ---
315 | 
316 | ## Mus-input
317 | 
318 |  * `is_mouse_button_down(btn: MouseButton)`
319 |  * `is_mouse_button_pressed(btn: MouseButton)`
320 |  * `is_mouse_button_released(btn: MouseButton)`
321 |  * `mouse_position -> (f32, f32)`
322 |  * `mouse_position_local -> Vec2`
323 |  * `mouse_wheel -> (f32, f32)`
324 |  * `set_cursor_grab(grab: bool)`
325 |  * `show_mouse(shown: bool)`
326 | 
327 | ---
328 | 
329 | ## MouseButton enum
330 | 
331 |  * `Right`
332 |  * `Left`
333 |  * `Middle`
334 |  * `Unknown`
335 | 
336 | ---
337 | 
338 | ## Touch input för mobiler
339 | 
340 |  * `simulate_mouse_with_touch(option: bool)`
341 |  * `touches -> Vec<Touch>`
342 |  * `touches_local -> Vec<Touch>`
343 | 
344 | ---
345 | 
346 | ## TouchPhase enum
347 | 
348 |  * `Started`
349 |  * `Stationary`
350 |  * `Moved`
351 |  * `Ended`
352 |  * `Cancelled`
353 | 
354 | ---
355 | 
356 | ## Ljud
357 | 
358 | ```rust
359 | use macroquad::{
360 |     audio::{load_sound, play_sound, PlaySoundParams},
361 |     window::next_frame,
362 | };
363 | 
364 | #[macroquad::main("Ljud")]
365 | async fn main() {
366 |     let sound = load_sound("examples/sound.wav").await.unwrap();
367 |     play_sound(
368 |         sound,
369 |         PlaySoundParams {
370 |             looped: true,
371 |             volume: 1.,
372 |         },
373 |     );
374 |     loop {
375 |         set_sound_volume(sound, 0.1);
376 |         next_frame().await;
377 |     }
378 | }
379 | ```
380 | 
381 | ---
382 | 
383 | ## Sound API
384 | 
385 |  * `load_sound(path: &str)`
386 |  * `load_sound_from_bytes(data: &[u8])`
387 |  * `play_sound(sound: Sound, params: PlaySoundParams)`
388 |  * `play_sound_once(sound: Sound)`
389 |  * `set_sound_volume(sound: Sound, volume: f32)`
390 |  * `stop_sound(sound: Sound)`
391 | 
392 | ---
393 | 
394 | ## Filladdning
395 | 
396 | ```rust
397 | use macroquad::prelude::*;
398 | 
399 | #[macroquad::main("File")]
400 | async fn main() -> Result<(), FileError> {
401 |     set_pc_assets_folder("assets");
402 |     let text = load_string("test.txt").await?;
403 |     println!("Content: {}", text);
404 |     Ok(())
405 | }
406 | ```
407 | 
408 | ---
409 | 
410 | ## File API
411 | 
412 |  * `load_file(path: &str)`
413 |  * `load_string(path: &str)`
414 |  * `set_pc_assets_folder(path: &str)`
415 | 
416 | ---
417 | 
418 | ## Tid
419 | 
420 | ```rust
421 | use macroquad::prelude::*;
422 | 
423 | #[macroquad::main("Time")]
424 | async fn main() {
425 |     let start_time = get_time();
426 |     let mut elapsed: f32 = 0.0;
427 |     loop {
428 |         elapsed += get_frame_time();
429 |         if elapsed > 1.0 {
430 |             println!(
431 |                 "FPS: {} Elapsed time: {:.3}",
432 |                 get_fps(),
433 |                 get_time() - start_time
434 |             );
435 |             elapsed = 0.0;
436 |         }
437 |         next_frame().await
438 |     }
439 | }
440 | ```
441 | 
442 | ---
443 | 
444 | ## Time API
445 | 
446 |  * `get_fps() -> i32`
447 |  * `get_frame_time() -> f32`
448 |  * `get_time() -> f64`
449 | 
450 | ---
451 | 
452 | ## Färger
453 | 
454 | ```rust
455 | use macroquad::prelude::*;
456 | 
457 | #[macroquad::main("Colors")]
458 | async fn main() {
459 |     let red = Color::from_rgba(255, 0, 0, 0);
460 |     loop {
461 |         clear_background(red);
462 |         next_frame().await
463 |     }
464 | }
465 | ```
466 | 
467 | ---
468 | 
469 | ## Color API
470 | 
471 |  * `Color::new(r: f32, g: f32, b: f32, a: f32)`
472 |  * `Color::from_rgba(r: u8, g: u8, b: u8, a: u8)`
473 |  * `Color::from_vec(vec: Vec4)`
474 |  * `hsl_to_rgb(h: f32, s: f32, l: f32)`
475 |  * `rgb_to_hsl(color: Color) -> (f32, f32, f32)`
476 |  * `macroquad::color::colors::BLACK` ...
477 | 
478 | ---
479 | 
480 | ## Slumpning
481 | 
482 | ```rust
483 | use macroquad::{miniquad, rand::{self, ChooseRandom}};
484 | 
485 | #[macroquad::main("Particles")]
486 | async fn main() {
487 |     rand::srand(miniquad::date::now() as u64);
488 |     let dice = rand::gen_range(1, 6);
489 |     let list = vec!["foo", "bar", "baz"];
490 |     let string = list.choose().unwrap();
491 |     println!("Tärningsslag: {}, Slumpad text: {}", dice, string);
492 | }
493 | ```
494 | 
495 | ---
496 | 
497 | ## Rand API
498 | 
499 |  * `gen_range<T>(low: T, high: T) -> T`
500 |  * `rand() -> u32`
501 |  * `srand(seed: u64)`
502 | 
503 | ---
504 | 
505 | ## ChooseRandom trait
506 | 
507 |  * `shuffle`
508 |  * `choose`
509 |  * `choose_mut`
510 |  * `choose_multiple(amount: usize)`
511 | 
512 | ---
513 | 
514 | ## Partiklar
515 | 
516 | ```rust
517 | use macroquad::prelude::*;
518 | use macroquad_particles::{Curve, Emitter, EmitterConfig, ParticleShape};
519 | 
520 | #[macroquad::main("Particles")]
521 | async fn main() {
522 |     let mut emitter = Emitter::new(EmitterConfig {
523 |         initial_velocity: 500.0,
524 |         initial_direction_spread: 2. * std::f32::consts::PI,
525 |         shape: ParticleShape::Circle { subdivisions: 360 },
526 |         size_curve: Some(Curve {
527 |             points: vec![(0.0, 0.5), (0.5, 1.0), (1.0, 0.0)],
528 |             ..Default::default()
529 |         }),
530 |         ..Default::default()
531 |     });
532 | 
533 |     loop {
534 |         clear_background(BLACK);
535 |         emitter.draw(vec2(screen_width() / 2., screen_height() / 2.));
536 |         next_frame().await
537 |     }
538 | }
539 | ```
540 | 
541 | ---
542 | 
543 | ## Olle Wreede
544 | 
545 | @ollej@hachyderm.io
546 | 
547 | ![Agical](assets/agical-logo.png)
548 | 


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  1 | # Raku
  2 | 
  3 | An introduction to Raku programming language
  4 | 
  5 | ---
  6 | 
  7 | ## What is Raku?
  8 | 
  9 |  * A language definition
 10 |  * Multiple implementations
 11 |  * Not Perl 5
 12 |  * Used to be Perl 6
 13 |  * Released on December 25th 2015
 14 | 
 15 | ---
 16 | 
 17 | ## Rakudo
 18 | 
 19 | A compiler for Raku with multiple virtual machine backends.
 20 | 
 21 | ---
 22 | 
 23 | ## Backends
 24 | 
 25 |  * MoarVM
 26 |  * JVM
 27 |  * Parrot
 28 | 
 29 | ---
 30 | 
 31 | ## Rakudo Star
 32 | 
 33 | * A "useful" early adopter distribution
 34 | * Includes Rakudo and useful modules.
 35 | 
 36 | ---
 37 | 
 38 | ## Raku features
 39 | 
 40 | A short overview of new features.
 41 | 
 42 | ---
 43 | 
 44 | ## Grammar
 45 | 
 46 |  * Named regexes
 47 |  * New syntax
 48 |  * Grouping regexes with Grammar class
 49 |  * Decorators: regex, token, rule
 50 | 
 51 | ---
 52 | 
 53 | ## Command line scripts
 54 | 
 55 | Built in syntax for command line option parsing.
 56 | 
 57 | ---
 58 | 
 59 | ## Positional command line options
 60 | 
 61 | ```raku
 62 | sub MAIN($x, $y) { ...  }
 63 | sub USAGE() {
 64 |     say "Usage: foo.pl <num1> <num2>";
 65 | }
 66 | 
 67 | # foo.pl 42 1337
 68 | ```
 69 | 
 70 | ---
 71 | 
 72 | ## Named parameters
 73 | 
 74 | ```raku
 75 | sub MAIN(Bool :$verbose) { ... }
 76 | 
 77 | # foo.pl --verbose
 78 | ```
 79 | 
 80 | ---
 81 | 
 82 | ## Options with arguments
 83 | 
 84 | ```raku
 85 | sub MAIN(:$foo = 'bar') { ... }
 86 | 
 87 | # foo.pl --foo=baz
 88 | ```
 89 | 
 90 | ---
 91 | 
 92 | ## Gradual typing
 93 | 
 94 | ```raku
 95 | method foo($bar) { ... }
 96 | ```
 97 | vs
 98 | ```raku
 99 | method foo(Str $bar) { ... }
100 | ```
101 | 
102 | ---
103 | 
104 | ## User defineable operators
105 | 
106 | ```raku
107 | 'bar' ¨  $foo;
108 | ```
109 | ```raku
110 | sub infix:<¨ >($method, $obj) {
111 |     say $obj."$method"();
112 | }
113 | # $foo->bar();
114 | ```
115 | 
116 | ---
117 | 
118 | ## Threading
119 | 
120 |  * Implemented using promises and channels
121 |  * Wraps implementations in different backends.
122 | 
123 | ---
124 | 
125 | ## Promises
126 | 
127 | A synchronization primitive.
128 | ```raku
129 | my $kept_in_10 = Promise.in(10);
130 | ```
131 | 
132 | ---
133 | 
134 | ## Channels
135 | 
136 | Sending results between threads.
137 | 
138 | ```raku
139 | my $dest = Channel.new;
140 | start {
141 |     loop {
142 |         $dest.send('foo');
143 |     }
144 |     $dest.close;
145 | }
146 | ```
147 | 
148 | ---
149 | 
150 | ## Who should use Raku?
151 | 
152 | * Interested in language development
153 | * Grammar parsing
154 | 
155 | ---
156 | 
157 | # Olle Wreede
158 | 
159 | @ollej
160 | 


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 1 | {
 2 |     "background_image": "assets/rust.png",
 3 |     "background_color": "#ffffff",
 4 |     "heading_color": "#000000",
 5 |     "text_color": "#000000",
 6 |     "align": "left",
 7 |     "font": "assets/Amble-Regular.ttf",
 8 |     "font_bold": "assets/Amble-Bold.ttf",
 9 |     "font_italic": "assets/Amble-Italic.ttf",
10 |     "font_size_header_title": 100,
11 |     "font_size_header_slides": 80,
12 |     "font_size_text": 40,
13 |     "vertical_offset": 85.0,
14 |     "horizontal_offset": 300.0,
15 |     "line_height": 2.0,
16 |     "blockquote_background_color": "#0b7261",
17 |     "blockquote_padding": 20.0,
18 |     "blockquote_left_quote": "“",
19 |     "blockquote_right_quote": "„",
20 |     "font_code": "assets/Hack-Regular.ttf",
21 |     "font_code_size": 20,
22 |     "code_line_height": 1.2,
23 |     "code_background_color": "#2a3439",
24 |     "code_theme": "Solarized (dark)",
25 |     "code_tab_width": 2,
26 |     "bullet": "• ",
27 |     "shader": false,
28 |     "transition": "radialin"
29 | }
30 | 


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 1 | # Rusty Aquarium
 2 | 
 3 | ---
 4 | 
 5 | ## Montioring visualization
 6 | 
 7 | Visualize monitoring data as a serene aquarium
 8 | 
 9 | ---
10 | 
11 | ## Why
12 | 
13 | Static graphs are boring
14 | 
15 | Opaque for the uninitated
16 | 
17 | Looks beautiful
18 | 
19 | ---
20 | 
21 | ## What can it be used for?
22 | 
23 | System monitoring
24 | 
25 | Web request tracking
26 | 
27 | E-commerce metrics
28 | 
29 | ---
30 | 
31 | ## How it works
32 | 
33 | Periodically reads a JSON file with input data
34 | 
35 | Input data defines fish size, speed, and species
36 | 
37 | ---
38 | 
39 | ## Input data
40 | 
41 | The `size`, `speed`, and `bubbles` values are multipliers
42 | 
43 | ```json
44 | {
45 |     "school": [
46 |         { "fish": "crab", "size": 1.0, "speed": 1.0, "bubbles": 1.0 }
47 |     ]
48 | }
49 | ```
50 | 
51 | ---
52 | 
53 | ## Generating data
54 | 
55 | Programs to generate input data is not included
56 | 
57 | System monitoring application included as exemple
58 | 
59 | ---
60 | 
61 | ## Thank you
62 | 
63 | Olle Wreede
64 | 
65 | olle.wreede@agical.se
66 | 
67 | @ollej
68 | 


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  1 | # Rusty Slider
  2 | 
  3 | ---
  4 | 
  5 | ## About
  6 | 
  7 | A small tool to display markdown files as a slideshow.
  8 | 
  9 | Use right key or left mouse button to go to next slide.
 10 | 
 11 | ---
 12 | 
 13 | ## Markdown
 14 | 
 15 | * Slides are written in markdown.
 16 | * Supports headers, paragraphs, lists, blockquotes, code blocks.
 17 | * Also supports images
 18 | * Text between horizontal lines will be a slide.
 19 | 
 20 | ---
 21 | 
 22 | ## Theme
 23 | 
 24 | Colors and fonts can be configured in a json file.
 25 | 
 26 | A background image can also be defined in the theme file.
 27 | 
 28 | ---
 29 | 
 30 | ## Rust + Macroquad
 31 | 
 32 | Developed with Rust and the macroquad game library.
 33 | 
 34 | ---
 35 | 
 36 | ## Cross-platform
 37 | 
 38 | Supports Windows, MacOS, Linux and web.
 39 | 
 40 | ---
 41 | 
 42 | ## Supports images
 43 | 
 44 | ![Image Title](assets/ferris.png)
 45 | 
 46 | ---
 47 | 
 48 | ## Code
 49 | 
 50 | Code blocks will be rendered with syntax highlighting.
 51 | 
 52 | ```rust
 53 | let shader_material = load_material(
 54 | 	shaders::crt::VERTEX,
 55 | 	shaders::crt::FRAGMENT,
 56 | 	Default::default(),
 57 | )
 58 | .unwrap();
 59 | ```
 60 | 
 61 | ---
 62 | 
 63 | ## Run code!
 64 | 
 65 | Execute code blocks by pressing `enter`.
 66 | 
 67 | ```bash
 68 | echo "Hello, World!"
 69 | ```
 70 | 
 71 | ---
 72 | 
 73 | ## Compiling Rust
 74 | 
 75 | Rust code blocks can be compiled and executed as well.
 76 | 
 77 | ```rust
 78 | fn main() {
 79 |     println!("Hello, world!");
 80 | }
 81 | ```
 82 | 
 83 | ---
 84 | 
 85 | ## Blockquotes
 86 | 
 87 | > Blockquotes renders with background color
 88 | >
 89 | > *And fancy quotes.*
 90 | 
 91 | ---
 92 | 
 93 | ## Controls
 94 | 
 95 | Left/right keys switches between previous and next slide.
 96 | 
 97 | Escape quits the slideshow.
 98 | 
 99 | Space toggles the shader.
100 | 
101 | Enter executes code in first code block.
102 | 
103 | ---
104 | 
105 | ## Usage
106 | 
107 | 1. Create a markdown file called `slides.md` in `assets` directory.
108 | 1. Optionally add a `theme.json` in `assets` directory.
109 | 
110 | ---
111 | 
112 | ## Possible improvements
113 | 
114 | Add transitions.
115 | 
116 | Support more shaders.
117 | 
118 | ---
119 | 
120 | ## License
121 | 
122 | **Copyright 2022 Olle Wreede**
123 | 
124 | Released under the MIT license.
125 | 


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 1 | {
 2 |     "background_image": "assets/background.png",
 3 |     "background_color": "#753204",
 4 |     "heading_color": "#e37831",
 5 |     "text_color": "#cccccc",
 6 |     "align": "left",
 7 |     "font": "assets/Amble-Regular.ttf",
 8 |     "font_bold": "assets/Amble-Bold.ttf",
 9 |     "font_italic": "assets/Amble-Italic.ttf",
10 |     "font_size_header_title": 100,
11 |     "font_size_header_slides": 80,
12 |     "font_size_text": 40,
13 |     "vertical_offset": 60.0,
14 |     "horizontal_offset": 100.0,
15 |     "line_height": 1.5,
16 |     "blockquote_background_color": "#333333",
17 |     "blockquote_padding": 20.0,
18 |     "blockquote_left_quote": "“",
19 |     "blockquote_right_quote": "„",
20 |     "font_code": "assets/Hack-Regular.ttf",
21 |     "font_code_size": 20,
22 |     "code_line_height": 1.2,
23 |     "code_background_color": "#e0e0e0",
24 |     "code_theme": "base16-ocean.light",
25 |     "code_tab_width": 4,
26 |     "bullet": "» ",
27 |     "shader": false,
28 |     "transition": "swirl"
29 | }
30 | 


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 1 | {
 2 |     "background_image": "assets/background.png",
 3 |     "background_color": "#301934",
 4 |     "heading_color": "#b19cd9",
 5 |     "text_color": "#ffffff",
 6 |     "align": "center",
 7 |     "font": "assets/Amble-Regular.ttf",
 8 |     "font_bold": "assets/Amble-Bold.ttf",
 9 |     "font_italic": "assets/Amble-Italic.ttf",
10 |     "font_size_header_title": 100,
11 |     "font_size_header_slides": 80,
12 |     "font_size_text": 40,
13 |     "vertical_offset": 20.0,
14 |     "horizontal_offset": 100.0,
15 |     "line_height": 2.0,
16 |     "blockquote_background_color": "#333333",
17 |     "blockquote_padding": 20.0,
18 |     "blockquote_left_quote": "“",
19 |     "blockquote_right_quote": "„",
20 |     "code_font": "assets/Hack-Regular.ttf",
21 |     "code_font_size": 20,
22 |     "code_line_height": 1.2,
23 |     "code_background_color": "#002b36",
24 |     "code_theme": "Solarized (dark)",
25 |     "code_tab_width": 2,
26 |     "bullet": "• ",
27 |     "shader": true
28 | }
29 | 


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 1 | {
 2 |     "background_image": "assets/uu.png",
 3 |     "background_color": "#ffffff",
 4 |     "heading_color": "#000000",
 5 |     "text_color": "#000000",
 6 |     "align": "left",
 7 |     "font": "assets/Amble-Regular.ttf",
 8 |     "font_bold": "assets/Amble-Bold.ttf",
 9 |     "font_italic": "assets/Amble-Italic.ttf",
10 |     "font_size_header_title": 80,
11 |     "font_size_header_slides": 60,
12 |     "font_size_text": 40,
13 |     "vertical_offset": 60.0,
14 |     "horizontal_offset": 250.0,
15 |     "line_height": 2.0,
16 |     "blockquote_background_color": "#2e2459",
17 |     "blockquote_padding": 20.0,
18 |     "blockquote_left_quote": "“",
19 |     "blockquote_right_quote": "„",
20 |     "font_code": "assets/Hack-Regular.ttf",
21 |     "font_code_size": 20,
22 |     "code_line_height": 1.2,
23 |     "code_background_color": "#2a3439",
24 |     "code_theme": "Solarized (dark)",
25 |     "code_tab_width": 2,
26 |     "bullet": "• ",
27 |     "shader": false,
28 |     "transition": "checkerboard"
29 | }
30 | 


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/demo/assets/vim-emacs.md:
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 1 | # vim + emacs
 2 | 
 3 | ---
 4 | 
 5 | ## vim ~/.emacs
 6 | 
 7 | Changes won't be evaluated
 8 | 
 9 | ---
10 | 
11 | ## vim-emacs plugin
12 | 
13 |  * Select a range
14 |  * Type command `:Emacs`
15 |  * Will evaluate range in Emacs
16 | 
17 | ---
18 | 
19 | ## How?
20 | 
21 |  * Emacs with server
22 |  * Lines sent with `emacsclient --eval`
23 |  * Elisp expressions evaluated
24 |  * Output is returned
25 | 
26 | ---
27 | 
28 | ## Why?
29 | 
30 | Let's end the war!
31 | 
32 | ---
33 | 
34 | ## Where?
35 | 
36 | The vim.emacs plugin is available on GitHub:
37 | 
38 | ```
39 | https://github.com/ollej/vim.emacs
40 | ```
41 | 
42 | ---
43 | 
44 | ## Questions?
45 | 
46 | No?
47 | 
48 | ---
49 | 
50 | ## Hate mail
51 | 
52 | olle@wreede.se
53 | 
54 | @ollej
55 | 


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 1 | <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><title>rusty slider</title><meta name="viewport" content="width=device-width"><meta name="twitter:card" content="summary_large_image"><meta name="twitter:site" content="@ollej"><meta name="twitter:creator" content="@ollej"><meta name="twitter:title" content="Rusty Slider example slideshows"><meta name="twitter:description" content="Rusty Slider is a small tool to display markdown files as a slideshow written in Rust."><meta name="twitter:image" content="https://ollej.github.io/rusty-slider/demo/assets/rusty-slider-card.jpg"><link rel="stylesheet" href="https://ollej.github.io/rusty-slider/assets/css/style.css"><style>
 2 |     .theme-chooser {
 3 |         text-align: center;
 4 |     }
 5 |     .theme-chooser label {
 6 |         margin-right: 0.5rem;
 7 |     }
 8 |     ul.thumbnails {
 9 |         display: flex;
10 |         flex-wrap: wrap;
11 |         justify-content: flex-start;
12 |         list-style: none;
13 |         margin: 0;
14 |         padding: 0;
15 |     }
16 |     @media screen and (min-width: 35.5em) {
17 |       img.thumbnail {
18 |           max-width: 17.5rem;
19 |       }
20 |     }
21 |     img.thumbnail {
22 |         border: solid thin black;
23 |     }
24 |     ul.thumbnails figure {
25 |         margin: 1rem;
26 |     }
27 |     figcaption {
28 |         text-align: center;
29 |     }
30 |     </style><script>
31 |     function url_for(href, slideshow, theme) {
32 |         let url = new URL(href);
33 |         let query = new URLSearchParams(url.search);
34 |         query.set("theme", theme + ".json");
35 |         query.set("slides", slideshow + ".md");
36 |         url.search = query;
37 |         return url;
38 |     }
39 |     function choose_theme(el) {
40 |         const theme = el.dataset.theme;
41 |         update_slideshow_thumbnails(theme);
42 |         update_slideshow_href(theme);
43 |         setTimeout(function () {
44 |             document.getElementById("slideshows-heading").scrollIntoView({
45 |               behavior: "smooth"
46 |             });
47 |         }, 1);
48 |         return false;
49 |     }
50 |     function update_slideshow_href(theme) {
51 |         const links = document.querySelectorAll("#slideshows a");
52 |         for (var link of links) {
53 |             const url = url_for(link.href, link.getAttribute("data-slideshow"), theme);
54 |             console.log("update href", theme, link.dataset.slideshow, url);
55 |             link.setAttribute("href", url);
56 |         }
57 |     }
58 |     function update_slideshow_thumbnails(theme) {
59 |         const thumbnails = document.getElementsByClassName("slideshow");
60 |         for (var thumbnail of thumbnails) {
61 |             const path = `assets/${theme}-${thumbnail.dataset.slideshow}.png`;
62 |             thumbnail.setAttribute("src", path);
63 |         }
64 |     }
65 |     </script></head><body><div class="wrapper"><header><h1 class="title">rusty slider</h1></header><div id="container"><p class="tagline">A list of example slideshows made with Rusty Slider.</p><div id="main" role="main"><div class="download-bar"><div class="inner"><a href="https://github.com/ollej/rusty-slider" class="code">View rusty-slider on GitHub</a></div><span class="blc"></span><span class="trc"></span></div><article class="markdown-body"><h2>Themes</h2><p>These are the themes included with Rusty Slider. You can also create your own.</p><ul id="themes" class="thumbnails"><li><a href="#" onclick="choose_theme(this)" data-theme="agical"><figure><img class="thumbnail theme" src="assets/thumbnail-agical.png"><figcaption>Agical</figcaption></figure></a></li><li><a href="#" onclick="choose_theme(this)" data-theme="default-theme"><figure><img class="thumbnail theme" src="assets/thumbnail-default-theme.png"><figcaption>Default Theme</figcaption></figure></a></li><li><a href="#" onclick="choose_theme(this)" data-theme="exalted-beer"><figure><img class="thumbnail theme" src="assets/thumbnail-exalted-beer.png"><figcaption>Exalted Beer</figcaption></figure></a></li><li><a href="#" onclick="choose_theme(this)" data-theme="rust"><figure><img class="thumbnail theme" src="assets/thumbnail-rust.png"><figcaption>Rust</figcaption></figure></a></li><li><a href="#" onclick="choose_theme(this)" data-theme="rusty"><figure><img class="thumbnail theme" src="assets/thumbnail-rusty.png"><figcaption>Rusty</figcaption></figure></a></li><li><a href="#" onclick="choose_theme(this)" data-theme="uu"><figure><img class="thumbnail theme" src="assets/thumbnail-uu.png"><figcaption>Uu</figcaption></figure></a></li></ul><h2>Transitions</h2><p>There are a number of transitions available, this is how they look.</p><video controls="controls" width="100%"><source type="video/mp4" src="assets/transition-demo.mp4"><img src="assets/transition-demo.gif" alt="Animation of transitions" width="100%"></video><h2 id="slideshows-heading">Slideshows</h2><p>Click on a presentation to run it with the selected theme.</p><ul id="slideshows" class="thumbnails"><li><a href="index.html?slides=advent-of-code.md&theme=default-theme.json" data-slideshow="advent-of-code"><figure><img class="thumbnail slideshow" src="assets/default-theme-advent-of-code.png" data-slideshow="advent-of-code"><figcaption>Advent Of Code</figcaption></figure></a></li><li><a href="index.html?slides=application-events.md&theme=default-theme.json" data-slideshow="application-events"><figure><img class="thumbnail slideshow" src="assets/default-theme-application-events.png" data-slideshow="application-events"><figcaption>Application Events</figcaption></figure></a></li><li><a href="index.html?slides=asterisk.md&theme=default-theme.json" data-slideshow="asterisk"><figure><img class="thumbnail slideshow" src="assets/default-theme-asterisk.png" data-slideshow="asterisk"><figcaption>Asterisk</figcaption></figure></a></li><li><a href="index.html?slides=continuous-deployment.md&theme=default-theme.json" data-slideshow="continuous-deployment"><figure><img class="thumbnail slideshow" src="assets/default-theme-continuous-deployment.png" data-slideshow="continuous-deployment"><figcaption>Continuous Deployment</figcaption></figure></a></li><li><a href="index.html?slides=event-sourcing.md&theme=default-theme.json" data-slideshow="event-sourcing"><figure><img class="thumbnail slideshow" src="assets/default-theme-event-sourcing.png" data-slideshow="event-sourcing"><figcaption>Event Sourcing</figcaption></figure></a></li><li><a href="index.html?slides=homebrewing.md&theme=default-theme.json" data-slideshow="homebrewing"><figure><img class="thumbnail slideshow" src="assets/default-theme-homebrewing.png" data-slideshow="homebrewing"><figcaption>Homebrewing</figcaption></figure></a></li><li><a href="index.html?slides=macroquad.md&theme=default-theme.json" data-slideshow="macroquad"><figure><img class="thumbnail slideshow" src="assets/default-theme-macroquad.png" data-slideshow="macroquad"><figcaption>Macroquad</figcaption></figure></a></li><li><a href="index.html?slides=raku.md&theme=default-theme.json" data-slideshow="raku"><figure><img class="thumbnail slideshow" src="assets/default-theme-raku.png" data-slideshow="raku"><figcaption>Raku</figcaption></figure></a></li><li><a href="index.html?slides=rusty-aquarium.md&theme=default-theme.json" data-slideshow="rusty-aquarium"><figure><img class="thumbnail slideshow" src="assets/default-theme-rusty-aquarium.png" data-slideshow="rusty-aquarium"><figcaption>Rusty Aquarium</figcaption></figure></a></li><li><a href="index.html?slides=rusty-slider.md&theme=default-theme.json" data-slideshow="rusty-slider"><figure><img class="thumbnail slideshow" src="assets/default-theme-rusty-slider.png" data-slideshow="rusty-slider"><figcaption>Rusty Slider</figcaption></figure></a></li><li><a href="index.html?slides=vim-emacs.md&theme=default-theme.json" data-slideshow="vim-emacs"><figure><img class="thumbnail slideshow" src="assets/default-theme-vim-emacs.png" data-slideshow="vim-emacs"><figcaption>Vim Emacs</figcaption></figure></a></li></ul></article></div></div><footer><div class="owner"><p><a href="https://github.com/ollej" class="avatar"><img src="https://github.com/ollej.png" width="48" height="48"></a><a href="https://github.com/ollej">ollej</a> maintains <a href="https://github.com/ollej/rusty-slider">Rusty Slider</a></p></div></footer></div></body></html>


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/demo/index.html:
--------------------------------------------------------------------------------
 1 | <html lang="en">
 2 | <head>
 3 |     <meta charset="utf-8">
 4 |     <title>Rusty Slider</title>
 5 |     <!-- Global site tag (gtag.js) - Google Analytics -->
 6 |     <script async src="https://www.googletagmanager.com/gtag/js?id=G-3C78FHENSR"></script>
 7 |     <script>
 8 |       window.dataLayer = window.dataLayer || [];
 9 |       function gtag(){dataLayer.push(arguments);}
10 |       gtag('js', new Date());
11 | 
12 |       gtag('config', 'G-3C78FHENSR');
13 |     </script>
14 |     <meta name="application-name" content="Rusty Slider">
15 |     <meta name="viewport" content="viewport-fit=cover, user-scalable=no, width=device-width, initial-scale=1, maximum-scale=1, shrink-to-fit=no">
16 |     <meta name="mobile-web-app-capable" content="yes">
17 |     <meta name="apple-mobile-web-app-capable" content="yes" />
18 |     <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
19 |     <link rel="manifest" href="manifest.json">
20 |     <style>
21 |       html,
22 |       body,
23 |       canvas {
24 |         margin: 0px;
25 |         padding: 0px;
26 |         width: 100%;
27 |         height: 100%;
28 |         overflow: hidden;
29 |         position: absolute;
30 |         background: black;
31 |         z-index: 0;
32 |       }
33 |       @media screen and (min-width: 320px) and (max-width: 767px) and (orientation: portrait) {
34 |         html {
35 |           transform: rotate(-90deg);
36 |           transform-origin: left top;
37 |           width: 100vh;
38 |           overflow-x: hidden;
39 |           position: absolute;
40 |           top: 100%;
41 |           left: 0;
42 |         }
43 |       }
44 |     </style>
45 | </head>
46 | <body>
47 |     <canvas id="glcanvas" tabindex='1'></canvas>
48 |     <script src="mq_js_bundle.js"></script>
49 |     <script src="quad-url.js"></script>
50 |     <script>load("rusty_slider.wasm");</script>
51 | </body>
52 | </html>
53 | 


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/demo/manifest.json:
--------------------------------------------------------------------------------
1 | {
2 |     "display": "fullscreen",
3 |     "orientation": "landscape",
4 |     "start_url": "/"
5 | }
6 | 


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/demo/quad-url.js:
--------------------------------------------------------------------------------
 1 | var ctx = null;
 2 | var memory;
 3 | 
 4 | params_set_mem = function (wasm_memory, _wasm_exports) {
 5 |     memory = wasm_memory;
 6 |     ctx = {};
 7 | }
 8 | 
 9 | function set_url(params, hash) {
10 |     let result = window.location.origin + window.location.pathname;
11 |     if (params != "") {
12 |         if (params !== undefined && params !== null) {
13 |             result += '?' + params;    
14 |         } else {
15 |             result += window.location.search;
16 |         }
17 |     }
18 |     if (hash != "") {
19 |         if (hash !== undefined && hash !== null) {
20 |             result += '#' + hash;
21 |         } else {
22 |             result += window.location.hash;
23 |         }
24 |     }
25 |     window.history.pushState({path:result},'',result); // https://stackoverflow.com/questions/10970078/modifying-a-query-string-without-reloading-the-page
26 | }
27 | 
28 | params_register_js_plugin = function (importObject) {
29 |     importObject.env.quad_url_path = function (full) {
30 |         if (full == 1) {
31 |             return js_object(window.location.href);    
32 |         } else {
33 |             return js_object(window.location.origin + window.location.pathname);    
34 |         }
35 |     }
36 |     importObject.env.quad_url_param_count = function () {
37 |         ctx.entries = [];
38 |         var some = new URLSearchParams(window.location.search);
39 |         for (let i of some.entries()) {
40 |             ctx.entries.push(i);
41 |         }
42 |         return ctx.entries.length;
43 |     }
44 |     importObject.env.quad_url_get_key = function (i) {
45 |         return js_object(ctx.entries[i][0])
46 |     }
47 |     importObject.env.quad_url_get_value = function (i) {
48 |         return js_object(ctx.entries[i][1])
49 |     }
50 |     importObject.env.quad_url_link_open = function (url_rs, new_tab) {
51 |         let url = get_js_object(url_rs);
52 |         if (new_tab == 0) {
53 |             window.open(url, "_self"); // https://stackoverflow.com/questions/8454510/open-url-in-same-window-and-in-same-tab
54 |         } else {
55 |             window.open(url);
56 |         }
57 |     }
58 |     importObject.env.quad_url_set_program_parameter = function (name_rs, value_rs) {
59 |         let name = get_js_object(name_rs);
60 |         let value = get_js_object(value_rs);
61 |         let params = new URLSearchParams(window.location.search);
62 |         params.set(name, value);
63 |         // todo убрать вопрос если пусто
64 |         set_url(params.toString(), null);
65 |     }
66 |     importObject.env.quad_url_delete_program_parameter = function (name_rs) {
67 |         let name = get_js_object(name_rs);
68 |         let params = new URLSearchParams(window.location.search);
69 |         params.delete(name);
70 |         set_url(params.toString(), null);
71 |     }
72 |     importObject.env.quad_url_get_hash = function () {
73 |         return js_object(window.location.hash);    
74 |     }
75 |     importObject.env.quad_url_set_hash = function (hash) {
76 |         set_url(null, get_js_object(hash));
77 |     }
78 | }
79 | 
80 | miniquad_add_plugin({
81 |     register_plugin: params_register_js_plugin,
82 |     on_init: params_set_mem,
83 |     name: "quad_url",
84 |     version: "0.1.0"
85 | });
86 | 


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/demo/rusty_slider.wasm:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/ollej/rusty-slider/6dfb5d2473317aaf96aeb1bea35c7b3d7dde1bcf/demo/rusty_slider.wasm


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/src/app_options.rs:
--------------------------------------------------------------------------------
 1 | use std::path::PathBuf;
 2 | 
 3 | use clap::{Parser, command};
 4 | 
 5 | use crate::prelude::Duration;
 6 | 
 7 | #[derive(Parser, Debug, Clone)]
 8 | #[command(
 9 |     name = "rusty-slider",
10 |     about = "A small tool to display markdown files as a slideshow."
11 | )]
12 | pub struct AppOptions {
13 |     /// Path to directory to load slideshow files from
14 |     #[arg(short, long, default_value = "assets")]
15 |     pub directory: PathBuf,
16 |     /// Markdown files with slides text.
17 |     #[arg(short, long, default_value = "rusty-slider.md")]
18 |     pub slides: PathBuf,
19 |     /// File with theme options.
20 |     #[arg(short, long, default_value = "default-theme.json")]
21 |     pub theme: PathBuf,
22 |     /// Automatically switch slides every N seconds.
23 |     #[arg(short, long, default_value = "0")]
24 |     pub automatic: Duration,
25 |     /// Switch transitions for every slide
26 |     #[arg(long)]
27 |     pub demo_transitions: bool,
28 |     /// When taking screenshot, store PNG at this path
29 |     #[arg(short = 'S', long, default_value = "screenshot.png")]
30 |     pub screenshot: PathBuf,
31 |     /// Enable executing code in code blocks
32 |     #[arg(long)]
33 |     pub enable_code_execution: bool,
34 |     /// Path to directory where application files are loaded from
35 |     #[arg(short = 'A', long, default_value = "assets")]
36 |     pub assets: PathBuf,
37 |     /// Slide number to start at
38 |     #[arg(short = 'n', long, default_value = "1", value_parser = clap::value_parser!(u32).range(1..))]
39 |     pub number: u32,
40 | }
41 | 
42 | impl AppOptions {
43 |     pub fn slides_path(&self) -> PathBuf {
44 |         let mut path = self.directory.clone();
45 |         path.push(self.slides.clone());
46 |         path
47 |     }
48 | 
49 |     pub fn theme_path(&self) -> PathBuf {
50 |         let mut path = self.directory.clone();
51 |         path.push(self.theme.clone());
52 |         path
53 |     }
54 | }
55 | 


--------------------------------------------------------------------------------
/src/clipboard.rs:
--------------------------------------------------------------------------------
1 | pub fn set_clipboard(data: &str) {
2 |     macroquad::miniquad::window::clipboard_set(data);
3 | }
4 | 


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/src/code_box_builder.rs:
--------------------------------------------------------------------------------
 1 | use crate::prelude::*;
 2 | use macroquad::prelude::{Color, Font};
 3 | use syntect::easy::HighlightLines;
 4 | use syntect::highlighting::FontStyle;
 5 | use syntect::highlighting::ThemeSet;
 6 | use syntect::parsing::SyntaxSet;
 7 | use syntect::util::LinesWithEndings;
 8 | 
 9 | pub struct CodeBoxBuilder {
10 |     ps: SyntaxSet,
11 |     ts: ThemeSet,
12 |     font_text: Font,
13 |     font_bold: Font,
14 |     font_italic: Font,
15 |     font_size: FontSize,
16 |     line_height: Height,
17 |     background_color: Color,
18 |     tab_spaces: String,
19 |     highlighting_theme: String,
20 |     margin: Height,
21 | }
22 | 
23 | impl CodeBoxBuilder {
24 |     pub fn new(theme: Theme, font_text: Font, font_bold: Font, font_italic: Font) -> Self {
25 |         Self {
26 |             ts: ThemeSet::load_defaults(),
27 |             ps: SyntaxSet::load_defaults_newlines(),
28 |             font_text,
29 |             font_bold,
30 |             font_italic,
31 |             font_size: theme.font_code_size.to_owned(),
32 |             line_height: theme.code_line_height.to_owned(),
33 |             background_color: theme.code_background_color.to_owned(),
34 |             tab_spaces: " ".repeat(theme.code_tab_width),
35 |             highlighting_theme: theme.code_theme.to_owned(),
36 |             margin: 10.0,
37 |         }
38 |     }
39 | 
40 |     pub fn build_draw_box(&self, language: Option<String>, code: String) -> CodeBox {
41 |         CodeBox::new(
42 |             TextBox::new(
43 |                 self.build_text_lines(language, code),
44 |                 0.,
45 |                 Some(self.background_color),
46 |                 TextBoxStyle::Code,
47 |             ),
48 |             self.margin,
49 |             Some(self.background_color),
50 |         )
51 |     }
52 | 
53 |     fn build_text_lines(&self, language: Option<String>, code: String) -> Vec<TextLine> {
54 |         let syntax = match language {
55 |             Some(lang) => self.ps.find_syntax_by_token(&lang),
56 |             None => self.ps.find_syntax_by_first_line(&code),
57 |         }
58 |         .unwrap_or_else(|| self.ps.find_syntax_plain_text());
59 |         let theme = &self.ts.themes[&self.highlighting_theme];
60 |         let mut h = HighlightLines::new(syntax, theme);
61 |         let lines = LinesWithEndings::from(&code)
62 |             .map(|line| h.highlight_line(line, &self.ps))
63 |             .filter_map(Result::ok)
64 |             .collect::<Vec<_>>();
65 | 
66 |         let mut text_lines = vec![];
67 |         let mut partials = vec![];
68 |         for tokens in lines.iter() {
69 |             for (style, text) in tokens {
70 |                 let text = text.trim_end_matches('\n').replace('\t', &self.tab_spaces);
71 |                 if text.is_empty() {
72 |                     continue;
73 |                 }
74 | 
75 |                 let c = style.foreground;
76 |                 let font_style = match style.font_style {
77 |                     FontStyle::BOLD => self.font_bold.clone(),
78 |                     FontStyle::ITALIC => self.font_italic.clone(),
79 |                     _ => self.font_text.clone(),
80 |                 };
81 | 
82 |                 partials.push(TextPartial::new(
83 |                     &text,
84 |                     font_style,
85 |                     self.font_size,
86 |                     Color::from_rgba(c.r, c.g, c.b, c.a),
87 |                     self.line_height,
88 |                 ));
89 |             }
90 |             text_lines.push(TextLine::new(DrawAlignment::left, partials));
91 |             partials = Vec::new();
92 |         }
93 | 
94 |         text_lines
95 |     }
96 | }
97 | 


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/src/codebox.rs:
--------------------------------------------------------------------------------
  1 | use crate::prelude::*;
  2 | use macroquad::prelude::*;
  3 | 
  4 | #[derive(Clone)]
  5 | pub struct CodeBox {
  6 |     width: Width,
  7 |     height: Height,
  8 |     margin: Height,
  9 |     background_color: Option<Color>,
 10 |     textbox: TextBox,
 11 | }
 12 | 
 13 | impl CodeBox {
 14 |     const TITLE_BAR_HEIGHT: f32 = 30.;
 15 |     const CHROME_CORNER_RADIUS: f32 = 8.;
 16 |     const CHROME_CIRCLE_DISTANCE: f32 = 10.;
 17 |     const CHROME_CIRCLE_RADIUS: f32 = 8.;
 18 |     const DEFAULT_TITLE_BAR_COLOR: Color = Color::new(0.965, 0.961, 0.961, 1.0);
 19 |     const CHROME_COLOR_RED: Color = Color::new(0.996, 0.373, 0.345, 1.);
 20 |     const CHROME_OUTLINE_RED: Color = Color::new(0.863, 0.227, 0.216, 1.);
 21 |     const CHROME_COLOR_YELLOW: Color = Color::new(0.996, 0.737, 0.173, 1.);
 22 |     const CHROME_OUTLINE_YELLOW: Color = Color::new(0.863, 0.592, 0.110, 1.);
 23 |     const CHROME_COLOR_GREEN: Color = Color::new(0.157, 0.784, 0.251, 1.);
 24 |     const CHROME_OUTLINE_GREEN: Color = Color::new(0.106, 0.639, 0.153, 1.);
 25 | 
 26 |     pub fn new(textbox: TextBox, margin: Height, background_color: Option<Color>) -> Self {
 27 |         Self {
 28 |             width: textbox.width_with_padding(),
 29 |             height: textbox.height_with_margin(),
 30 |             margin,
 31 |             background_color,
 32 |             textbox,
 33 |         }
 34 |     }
 35 | 
 36 |     pub fn draw(&self, hpos: Hpos, vpos: Vpos) -> Vpos {
 37 |         let vpos = vpos + self.margin;
 38 |         self.draw_rounded_rectangle(
 39 |             hpos,
 40 |             vpos,
 41 |             self.width + Self::CHROME_CORNER_RADIUS,
 42 |             self.height + Self::TITLE_BAR_HEIGHT + Self::CHROME_CORNER_RADIUS,
 43 |             Self::CHROME_CORNER_RADIUS,
 44 |             self.background_color
 45 |                 .unwrap_or(Self::DEFAULT_TITLE_BAR_COLOR),
 46 |         );
 47 |         self.draw_outlined_circle(
 48 |             hpos + Self::CHROME_CIRCLE_DISTANCE + Self::CHROME_CIRCLE_RADIUS,
 49 |             vpos,
 50 |             Self::CHROME_COLOR_RED,
 51 |             Self::CHROME_OUTLINE_RED,
 52 |         );
 53 |         self.draw_outlined_circle(
 54 |             hpos + Self::CHROME_CIRCLE_DISTANCE * 2. + Self::CHROME_CIRCLE_RADIUS * 3.,
 55 |             vpos,
 56 |             Self::CHROME_COLOR_YELLOW,
 57 |             Self::CHROME_OUTLINE_YELLOW,
 58 |         );
 59 |         self.draw_outlined_circle(
 60 |             hpos + Self::CHROME_CIRCLE_DISTANCE * 3. + Self::CHROME_CIRCLE_RADIUS * 5.,
 61 |             vpos,
 62 |             Self::CHROME_COLOR_GREEN,
 63 |             Self::CHROME_OUTLINE_GREEN,
 64 |         );
 65 |         let new_vpos = self.textbox.draw(hpos, vpos + Self::TITLE_BAR_HEIGHT);
 66 |         new_vpos + self.margin
 67 |     }
 68 | 
 69 |     fn draw_rounded_rectangle(
 70 |         &self,
 71 |         hpos: Hpos,
 72 |         vpos: Vpos,
 73 |         width: Width,
 74 |         height: Height,
 75 |         corner_radius: f32,
 76 |         color: Color,
 77 |     ) {
 78 |         draw_circle(
 79 |             hpos + corner_radius,
 80 |             vpos + corner_radius,
 81 |             corner_radius,
 82 |             color,
 83 |         );
 84 |         draw_circle(
 85 |             hpos + width - corner_radius,
 86 |             vpos + corner_radius,
 87 |             corner_radius,
 88 |             color,
 89 |         );
 90 |         draw_rectangle(
 91 |             hpos,
 92 |             vpos + corner_radius,
 93 |             width,
 94 |             height - corner_radius * 2.,
 95 |             color,
 96 |         );
 97 |         draw_rectangle(
 98 |             hpos + corner_radius,
 99 |             vpos,
100 |             width - corner_radius * 2.,
101 |             height,
102 |             color,
103 |         );
104 |         draw_circle(
105 |             hpos + corner_radius,
106 |             vpos + height - corner_radius,
107 |             corner_radius,
108 |             color,
109 |         );
110 |         draw_circle(
111 |             hpos + width - corner_radius,
112 |             vpos + height - corner_radius,
113 |             corner_radius,
114 |             color,
115 |         );
116 |     }
117 | 
118 |     fn draw_outlined_circle(&self, hpos: Hpos, vpos: Vpos, color: Color, outline_color: Color) {
119 |         draw_circle(
120 |             hpos,
121 |             vpos + Self::TITLE_BAR_HEIGHT / 2.,
122 |             Self::CHROME_CIRCLE_RADIUS,
123 |             color,
124 |         );
125 |         draw_circle_lines(
126 |             hpos,
127 |             vpos + Self::TITLE_BAR_HEIGHT / 2.,
128 |             Self::CHROME_CIRCLE_RADIUS,
129 |             1.,
130 |             outline_color,
131 |         );
132 |     }
133 | 
134 |     pub fn width(&self) -> Width {
135 |         self.width
136 |     }
137 | 
138 |     pub fn width_with_padding(&self) -> Width {
139 |         self.width + Self::CHROME_CORNER_RADIUS * 2.
140 |     }
141 | 
142 |     pub fn height(&self) -> Height {
143 |         self.height
144 |     }
145 | 
146 |     pub fn height_with_padding(&self) -> Width {
147 |         self.height + Self::CHROME_CORNER_RADIUS
148 |     }
149 | 
150 |     pub fn height_with_margin(&self) -> Height {
151 |         self.height() + self.margin
152 |     }
153 | }
154 | 


--------------------------------------------------------------------------------
/src/drawbox.rs:
--------------------------------------------------------------------------------
 1 | use crate::prelude::*;
 2 | use macroquad::prelude::*;
 3 | 
 4 | #[derive(Clone)]
 5 | pub enum DrawBox {
 6 |     Image(ImageBox),
 7 |     Text(TextBox),
 8 |     Code(CodeBox),
 9 | }
10 | 
11 | impl DrawBox {
12 |     pub async fn load_image(&mut self) {
13 |         match self {
14 |             DrawBox::Image(draw_box) => {
15 |                 if let Some(path) = draw_box.path() {
16 |                     match load_texture(&path).await {
17 |                         Ok(texture) => {
18 |                             draw_box.set_image(texture);
19 |                             debug!("Image loaded: {}", path);
20 |                         }
21 |                         _ => {
22 |                             error!("Couldn't load image file: {}", path);
23 |                         }
24 |                     }
25 |                 }
26 |             }
27 |             DrawBox::Text(_) => (),
28 |             DrawBox::Code(_) => (),
29 |         }
30 |     }
31 | 
32 |     pub fn draw(&self, hpos: Hpos, vpos: Vpos) -> Vpos {
33 |         match self {
34 |             DrawBox::Image(image_box) => image_box.draw(hpos, vpos),
35 |             DrawBox::Text(text_box) => text_box.draw(hpos, vpos),
36 |             DrawBox::Code(code_box) => code_box.draw(hpos, vpos),
37 |         }
38 |     }
39 | 
40 |     pub fn width_with_padding(&self) -> Width {
41 |         match self {
42 |             DrawBox::Image(image_box) => image_box.width_with_padding(),
43 |             DrawBox::Text(text_box) => text_box.width_with_padding(),
44 |             DrawBox::Code(code_box) => code_box.width_with_padding(),
45 |         }
46 |     }
47 | }
48 | 


--------------------------------------------------------------------------------
/src/executable_code.rs:
--------------------------------------------------------------------------------
  1 | use std::{
  2 |     ffi::OsStr,
  3 |     fmt,
  4 |     io::prelude::*,
  5 |     process::{Command, Stdio},
  6 | };
  7 | 
  8 | use tempfile::NamedTempFile;
  9 | 
 10 | #[derive(Debug)]
 11 | pub enum ExecutionError {
 12 |     Execute(std::io::Error),
 13 |     InputOutput,
 14 |     CreateTempFile(String),
 15 |     Compile(String),
 16 |     UnknkownLanguage(String),
 17 | }
 18 | 
 19 | impl fmt::Display for ExecutionError {
 20 |     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
 21 |         match self {
 22 |             ExecutionError::Execute(error) => write!(f, "Execution error: {:?}", error.to_string()),
 23 |             ExecutionError::InputOutput => write!(f, "Coulnt't read Std I/O"),
 24 |             ExecutionError::CreateTempFile(message) => {
 25 |                 write!(f, "Creating build file: {}", message)
 26 |             }
 27 |             ExecutionError::Compile(message) => write!(f, "Compile error: {}", message),
 28 |             ExecutionError::UnknkownLanguage(language) => {
 29 |                 write!(f, "Don't know how to compile {}", language)
 30 |             }
 31 |         }
 32 |     }
 33 | }
 34 | 
 35 | impl std::error::Error for ExecutionError {}
 36 | 
 37 | impl From<std::io::Error> for ExecutionError {
 38 |     fn from(e: std::io::Error) -> Self {
 39 |         ExecutionError::Execute(e)
 40 |     }
 41 | }
 42 | 
 43 | #[derive(Clone)]
 44 | pub enum ExecutableCode {
 45 |     Bash(String),
 46 |     Python(String),
 47 |     Ruby(String),
 48 |     Perl(String),
 49 |     Rust(String),
 50 |     Unknown(String, String),
 51 | }
 52 | 
 53 | impl fmt::Display for ExecutableCode {
 54 |     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
 55 |         match &*self {
 56 |             ExecutableCode::Bash(_) => write!(f, "bash"),
 57 |             ExecutableCode::Python(_) => write!(f, "python"),
 58 |             ExecutableCode::Ruby(_) => write!(f, "ruby"),
 59 |             ExecutableCode::Perl(_) => write!(f, "perl"),
 60 |             ExecutableCode::Rust(_) => write!(f, "rust"),
 61 |             ExecutableCode::Unknown(language, _) => write!(f, "unknown: {}", language),
 62 |         }
 63 |     }
 64 | }
 65 | 
 66 | impl ExecutableCode {
 67 |     pub fn from(language: &str, code: &String) -> Option<Self> {
 68 |         match language {
 69 |             "bash" | "sh" => Some(ExecutableCode::Bash(code.to_string())),
 70 |             "python" => Some(ExecutableCode::Python(code.to_string())),
 71 |             "ruby" => Some(ExecutableCode::Ruby(code.to_string())),
 72 |             "perl" => Some(ExecutableCode::Perl(code.to_string())),
 73 |             "rust" => Some(ExecutableCode::Rust(code.to_string())),
 74 |             language => Some(ExecutableCode::Unknown(
 75 |                 language.to_string(),
 76 |                 code.to_string(),
 77 |             )),
 78 |         }
 79 |     }
 80 | 
 81 |     pub fn code(&self) -> String {
 82 |         match self {
 83 |             ExecutableCode::Bash(code) => code.clone(),
 84 |             ExecutableCode::Python(code) => code.clone(),
 85 |             ExecutableCode::Ruby(code) => code.clone(),
 86 |             ExecutableCode::Perl(code) => code.clone(),
 87 |             ExecutableCode::Rust(code) => code.clone(),
 88 |             ExecutableCode::Unknown(_language, code) => code.clone(),
 89 |         }
 90 |     }
 91 | 
 92 |     pub fn execute(&self) -> Result<String, ExecutionError> {
 93 |         match self {
 94 |             ExecutableCode::Bash(code) => self.execute_command("bash", ["-"], code),
 95 |             ExecutableCode::Python(code) => self.execute_command("python3", ["-"], code),
 96 |             ExecutableCode::Ruby(code) => self.execute_command("ruby", ["-"], code),
 97 |             ExecutableCode::Perl(code) => self.execute_command("perl", ["-"], code),
 98 |             ExecutableCode::Rust(code) => self.compile_rust(code),
 99 |             ExecutableCode::Unknown(language, _code) => {
100 |                 Err(ExecutionError::UnknkownLanguage(language.to_string()))
101 |             }
102 |         }
103 |     }
104 | 
105 |     fn compile_rust(&self, code: &String) -> Result<String, ExecutionError> {
106 |         let temp_file = NamedTempFile::new()?;
107 |         let file_path = temp_file.path().to_string_lossy();
108 |         self.execute_command("rustc", ["-v", "-o", &file_path, "-"], code)?;
109 |         self.run_command_capture_output(&file_path)
110 |     }
111 | 
112 |     fn run_command_capture_output(&self, command: &str) -> Result<String, ExecutionError> {
113 |         let process = Command::new(command).stdout(Stdio::piped()).spawn()?;
114 |         let mut output = String::new();
115 |         process.stdout.unwrap().read_to_string(&mut output)?;
116 |         Ok(output)
117 |     }
118 | 
119 |     fn execute_command<I, S>(
120 |         &self,
121 |         command: &str,
122 |         arguments: I,
123 |         code: &String,
124 |     ) -> Result<String, ExecutionError>
125 |     where
126 |         I: IntoIterator<Item = S>,
127 |         S: AsRef<OsStr>,
128 |     {
129 |         let mut process = Command::new(command)
130 |             .args(arguments)
131 |             .stdin(Stdio::piped())
132 |             .stdout(Stdio::piped())
133 |             .stderr(Stdio::piped())
134 |             .spawn()?;
135 |         process
136 |             .stdin
137 |             .take()
138 |             .ok_or(ExecutionError::InputOutput)?
139 |             .write_all(code.as_bytes())?;
140 |         let mut output = String::new();
141 |         if process.wait()?.success() {
142 |             process
143 |                 .stdout
144 |                 .take()
145 |                 .ok_or(ExecutionError::InputOutput)?
146 |                 .read_to_string(&mut output)?;
147 |             Ok(output)
148 |         } else {
149 |             process
150 |                 .stderr
151 |                 .take()
152 |                 .ok_or(ExecutionError::InputOutput)?
153 |                 .read_to_string(&mut output)?;
154 |             Err(ExecutionError::Compile(output))
155 |         }
156 |     }
157 | }
158 | 


--------------------------------------------------------------------------------
/src/helptext.txt:
--------------------------------------------------------------------------------
 1 | Shortcuts
 2 | 
 3 | ESC / Q - Quit program
 4 | Left arrow - Go to previous slide
 5 | Right arrow - Go to next slide
 6 | Space - Toggle shader
 7 | Enter - Execute code in first code block
 8 | S - Save screenshot
 9 | C - Copy first code block to clipboard
10 | ? - Show this help screen
11 | 
12 | 


--------------------------------------------------------------------------------
/src/hex_color.rs:
--------------------------------------------------------------------------------
 1 | use colorsys::Rgb;
 2 | use macroquad::prelude::{Color, WHITE};
 3 | use nanoserde::DeJson;
 4 | 
 5 | #[derive(DeJson)]
 6 | #[nserde(transparent)]
 7 | pub struct HexColor(String);
 8 | 
 9 | impl HexColor {
10 |     pub fn as_str(&self) -> &str {
11 |         &self.0
12 |     }
13 | }
14 | 
15 | impl From<&HexColor> for Color {
16 |     fn from(color: &HexColor) -> Color {
17 |         match Rgb::from_hex_str(color.as_str()) {
18 |             Ok(rgb) => Color::new(
19 |                 rgb.red() as f32 / 255.,
20 |                 rgb.green() as f32 / 255.,
21 |                 rgb.blue() as f32 / 255.,
22 |                 1.,
23 |             ),
24 |             Err(_) => WHITE,
25 |         }
26 |     }
27 | }
28 | 


--------------------------------------------------------------------------------
/src/imagebox.rs:
--------------------------------------------------------------------------------
 1 | use crate::prelude::*;
 2 | use macroquad::prelude::*;
 3 | 
 4 | #[derive(Clone)]
 5 | pub struct ImageBox {
 6 |     margin: Height,
 7 |     padding: f32,
 8 |     background_color: Option<Color>,
 9 |     path: String,
10 |     image: Option<Texture2D>,
11 | }
12 | 
13 | impl ImageBox {
14 |     const BOX_PADDING: f32 = 20.;
15 | 
16 |     pub fn new(path: &str, margin: Height, background_color: Option<Color>) -> Self {
17 |         Self {
18 |             margin,
19 |             padding: Self::BOX_PADDING,
20 |             background_color,
21 |             path: path.to_string(),
22 |             image: None,
23 |         }
24 |     }
25 | 
26 |     pub fn draw(&self, hpos: Hpos, vpos: Vpos) -> Vpos {
27 |         //debug!(
28 |         //    "Image draw hpos:{} vpos:{} width:{} height: {}",
29 |         //    hpos,
30 |         //    vpos,
31 |         //    self.width(),
32 |         //    self.height()
33 |         //);
34 |         if let Some(image) = self.image.clone() {
35 |             draw_texture_ex(
36 |                 &image,
37 |                 hpos,
38 |                 vpos + self.padding + self.margin,
39 |                 WHITE,
40 |                 DrawTextureParams {
41 |                     dest_size: Some(vec2(self.width(), self.height())),
42 |                     ..Default::default()
43 |                 },
44 |             );
45 |         }
46 |         vpos + self.height_with_margin()
47 |     }
48 | 
49 |     pub fn draw_background(&self, hpos: Hpos, vpos: Vpos) {
50 |         if let Some(color) = self.background_color() {
51 |             draw_rectangle(
52 |                 hpos,
53 |                 vpos,
54 |                 self.width_with_padding(),
55 |                 self.height_with_padding(),
56 |                 color,
57 |             );
58 |         }
59 |     }
60 | 
61 |     pub fn path(&self) -> Option<String> {
62 |         Some(self.path.clone())
63 |     }
64 | 
65 |     pub fn set_image(&mut self, image: Texture2D) {
66 |         self.image = Some(image);
67 |     }
68 | 
69 |     fn background_color(&self) -> Option<Color> {
70 |         self.background_color
71 |     }
72 | 
73 |     pub fn width(&self) -> Width {
74 |         match self.image.clone() {
75 |             Some(image) => image.width(),
76 |             None => 0.,
77 |         }
78 |     }
79 | 
80 |     pub fn width_with_padding(&self) -> Width {
81 |         self.width() + self.padding * 2.
82 |     }
83 | 
84 |     pub fn height(&self) -> Height {
85 |         match self.image.clone() {
86 |             Some(image) => image.height(),
87 |             None => 0.,
88 |         }
89 |     }
90 | 
91 |     pub fn height_with_padding(&self) -> Height {
92 |         self.height() + self.padding * 2.
93 |     }
94 | 
95 |     fn height_with_margin(&self) -> Height {
96 |         self.height_with_padding() + self.margin
97 |     }
98 | }
99 | 


--------------------------------------------------------------------------------
/src/lib.rs:
--------------------------------------------------------------------------------
 1 | pub mod app_options;
 2 | pub mod clipboard;
 3 | pub mod code_box_builder;
 4 | pub mod codebox;
 5 | pub mod drawbox;
 6 | pub mod executable_code;
 7 | pub mod hex_color;
 8 | pub mod imagebox;
 9 | pub mod markdowntoslides;
10 | pub mod prelude;
11 | pub mod shaders;
12 | pub mod show_help;
13 | pub mod slider;
14 | pub mod textbox;
15 | pub mod theme;
16 | pub mod transition;
17 | pub mod transitioner;
18 | 


--------------------------------------------------------------------------------
/src/main.rs:
--------------------------------------------------------------------------------
  1 | #![windows_subsystem = "windows"]
  2 | 
  3 | extern crate markdown;
  4 | 
  5 | use {clap::Parser, macroquad::prelude::*, quad_url::get_program_parameters};
  6 | 
  7 | use rusty_slider::prelude::*;
  8 | 
  9 | fn window_conf() -> Conf {
 10 |     Conf {
 11 |         window_title: "Rusty Slider".to_owned(),
 12 |         fullscreen: true,
 13 |         ..Default::default()
 14 |     }
 15 | }
 16 | 
 17 | #[macroquad::main(window_conf())]
 18 | async fn main() {
 19 |     let options = AppOptions::parse_from(get_program_parameters().iter());
 20 | 
 21 |     let theme = Theme::load(options.theme_path()).await;
 22 |     debug!(
 23 |         "background_color: {:?} text_color: {:?} heading_color{:?}",
 24 |         theme.background_color, theme.text_color, theme.heading_color,
 25 |     );
 26 |     let mut shader_activated = theme.shader;
 27 |     let mut slides = Slides::load(options.clone(), theme).await;
 28 |     let mut show_help = ShowHelp::new();
 29 |     let shader_material = load_material(
 30 |         ShaderSource::Glsl {
 31 |             vertex: crt::VERTEX,
 32 |             fragment: crt::FRAGMENT,
 33 |         },
 34 |         Default::default(),
 35 |     )
 36 |     .unwrap();
 37 | 
 38 |     loop {
 39 |         #[cfg(not(target_arch = "wasm32"))]
 40 |         if is_key_pressed(KeyCode::Q) | is_key_pressed(KeyCode::Escape) {
 41 |             break;
 42 |         }
 43 |         if is_key_pressed(KeyCode::Left)
 44 |             || is_key_pressed(KeyCode::H)
 45 |             || is_mouse_button_pressed(MouseButton::Right)
 46 |         {
 47 |             slides.prev();
 48 |         }
 49 |         if is_key_pressed(KeyCode::Right)
 50 |             || is_key_pressed(KeyCode::L)
 51 |             || is_mouse_button_pressed(MouseButton::Left)
 52 |         {
 53 |             slides.next();
 54 |         }
 55 |         if is_key_pressed(KeyCode::Up)
 56 |             || is_key_pressed(KeyCode::K)
 57 |             || is_key_pressed(KeyCode::Home)
 58 |         {
 59 |             slides.first();
 60 |         }
 61 |         if is_key_pressed(KeyCode::Down)
 62 |             || is_key_pressed(KeyCode::J)
 63 |             || is_key_pressed(KeyCode::End)
 64 |         {
 65 |             slides.last();
 66 |         }
 67 |         if is_key_pressed(KeyCode::Space) {
 68 |             shader_activated = !shader_activated;
 69 |         }
 70 |         if is_key_pressed(KeyCode::C) {
 71 |             slides.copy_codeblock();
 72 |         }
 73 |         match get_char_pressed() {
 74 |             Some('?') => show_help.toggle_show(),
 75 |             _ => (),
 76 |         }
 77 |         #[cfg(not(target_arch = "wasm32"))]
 78 |         if options.enable_code_execution && is_key_pressed(KeyCode::Enter) {
 79 |             slides.run_code_block();
 80 |         }
 81 | 
 82 |         slides.update(get_frame_time());
 83 |         slides.draw();
 84 |         let texture = slides.texture();
 85 | 
 86 |         set_default_camera();
 87 |         clear_background(BLACK);
 88 |         if shader_activated {
 89 |             gl_use_material(&shader_material);
 90 |         }
 91 |         draw_texture_ex(
 92 |             &texture,
 93 |             0.,
 94 |             0.,
 95 |             WHITE,
 96 |             DrawTextureParams {
 97 |                 dest_size: Some(vec2(screen_width(), screen_height())),
 98 |                 flip_y: true,
 99 |                 ..Default::default()
100 |             },
101 |         );
102 |         if shader_activated {
103 |             gl_use_default_material();
104 |         }
105 |         show_help.draw();
106 | 
107 |         if is_key_pressed(KeyCode::S) {
108 |             get_screen_data().export_png(&options.screenshot.to_string_lossy());
109 |         }
110 | 
111 |         next_frame().await
112 |     }
113 | }
114 | 


--------------------------------------------------------------------------------
/src/markdowntoslides.rs:
--------------------------------------------------------------------------------
  1 | use crate::prelude::*;
  2 | use macroquad::prelude::*;
  3 | use markdown::{Block, ListItem, Span};
  4 | use std::mem::discriminant;
  5 | 
  6 | pub struct MarkdownToSlides {
  7 |     theme: Theme,
  8 |     font_text: Font,
  9 |     font_bold: Font,
 10 |     font_italic: Font,
 11 |     font_code: Font,
 12 |     code_box_builder: CodeBoxBuilder,
 13 | }
 14 | 
 15 | impl MarkdownToSlides {
 16 |     pub fn new(
 17 |         theme: Theme,
 18 |         font_text: Font,
 19 |         font_bold: Font,
 20 |         font_italic: Font,
 21 |         font_code: Font,
 22 |     ) -> Self {
 23 |         let code_box_builder = CodeBoxBuilder::new(
 24 |             theme.clone(),
 25 |             font_code.clone(),
 26 |             font_bold.clone(),
 27 |             font_italic.clone(),
 28 |         );
 29 |         Self {
 30 |             theme,
 31 |             code_box_builder,
 32 |             font_text,
 33 |             font_bold,
 34 |             font_italic,
 35 |             font_code,
 36 |         }
 37 |     }
 38 | 
 39 |     pub fn parse(&self, markdown: String) -> Vec<Slide> {
 40 |         let tokens = markdown::tokenize(&markdown);
 41 |         let slide_blocks = self.split_tokens_into_slides(tokens);
 42 |         self.build_slides(slide_blocks)
 43 |     }
 44 | 
 45 |     fn split_tokens_into_slides(&self, tokens: Vec<Block>) -> Vec<Vec<Block>> {
 46 |         let mut slides: Vec<Vec<Block>> = vec![];
 47 |         let mut blocks: Vec<Block> = vec![];
 48 |         for block in tokens.iter() {
 49 |             debug!("{:?}", block);
 50 |             match block {
 51 |                 Block::Hr => {
 52 |                     slides.push(blocks);
 53 |                     blocks = vec![];
 54 |                 }
 55 |                 _ => blocks.push(block.to_owned()),
 56 |             }
 57 |         }
 58 |         if !blocks.is_empty() {
 59 |             slides.push(blocks);
 60 |         }
 61 |         slides
 62 |     }
 63 | 
 64 |     fn build_slides(&self, slide_blocks: Vec<Vec<Block>>) -> Vec<Slide> {
 65 |         let mut slides = vec![];
 66 |         for blocks in slide_blocks.iter() {
 67 |             slides.push(self.build_slide(blocks));
 68 |         }
 69 |         slides
 70 |     }
 71 | 
 72 |     fn build_slide(&self, blocks: &[Block]) -> Slide {
 73 |         let (draw_boxes, background_path) =
 74 |             self.blocks_to_draw_boxes(blocks, None, TextBoxStyle::Standard);
 75 |         Slide::new(
 76 |             draw_boxes,
 77 |             self.find_first_code_block(blocks),
 78 |             self.theme.align,
 79 |             self.theme.horizontal_offset,
 80 |             background_path,
 81 |         )
 82 |     }
 83 | 
 84 |     fn find_first_code_block(&self, blocks: &[Block]) -> Option<ExecutableCode> {
 85 |         for block in blocks.iter() {
 86 |             if let Block::CodeBlock(Some(language), code) = block {
 87 |                 if let Some(cb) = ExecutableCode::from(language, code) {
 88 |                     return Some(cb);
 89 |                 }
 90 |             }
 91 |         }
 92 |         None
 93 |     }
 94 | 
 95 |     fn blocks_to_draw_boxes(
 96 |         &self,
 97 |         blocks: &[Block],
 98 |         background_color: Option<Color>,
 99 |         style: TextBoxStyle,
100 |     ) -> (Vec<DrawBox>, Option<String>) {
101 |         let mut draw_boxes = vec![];
102 |         let mut text_lines = vec![];
103 |         let mut background_path: Option<String> = None;
104 |         for block in blocks.iter() {
105 |             match block {
106 |                 Block::Header(spans, 1) => {
107 |                     if !text_lines.is_empty() {
108 |                         draw_boxes.push(DrawBox::Text(TextBox::new(
109 |                             text_lines,
110 |                             self.theme.vertical_offset,
111 |                             background_color,
112 |                             style.clone(),
113 |                         )));
114 |                         text_lines = Vec::new();
115 |                     }
116 |                     draw_boxes.push(DrawBox::Text(TextBox::new(
117 |                         vec![TextLine::new(
118 |                             self.theme.align,
119 |                             self.spans_to_text_partials(
120 |                                 spans,
121 |                                 self.font_text.clone(),
122 |                                 self.theme.font_size_header_title,
123 |                                 self.theme.heading_color,
124 |                             ),
125 |                         )],
126 |                         self.theme.vertical_offset,
127 |                         background_color,
128 |                         TextBoxStyle::Title,
129 |                     )));
130 |                 }
131 |                 Block::Header(spans, _size) => {
132 |                     text_lines.push(TextLine::new(
133 |                         self.theme.align,
134 |                         self.spans_to_text_partials(
135 |                             spans,
136 |                             self.font_text.clone(),
137 |                             self.theme.font_size_header_slides,
138 |                             self.theme.heading_color,
139 |                         ),
140 |                     ));
141 |                 }
142 |                 Block::Paragraph(spans) if self.is_image(spans) => {
143 |                     if !text_lines.is_empty() {
144 |                         draw_boxes.push(DrawBox::Text(TextBox::new(
145 |                             text_lines,
146 |                             self.theme.vertical_offset,
147 |                             background_color,
148 |                             style.clone(),
149 |                         )));
150 |                         text_lines = Vec::new();
151 |                     }
152 |                     if let Some(Span::Image(title, path, _)) = spans.first() {
153 |                         if title.as_str() == "background" {
154 |                             background_path = Some(path.clone());
155 |                         } else {
156 |                             draw_boxes.push(DrawBox::Image(ImageBox::new(path, 0., None)));
157 |                         }
158 |                     }
159 |                 }
160 |                 Block::Paragraph(spans) => {
161 |                     text_lines.push(TextLine::new(
162 |                         self.theme.align,
163 |                         self.spans_to_text_partials(
164 |                             spans,
165 |                             self.font_text.clone(),
166 |                             self.theme.font_size_text,
167 |                             self.theme.text_color,
168 |                         ),
169 |                     ));
170 |                 }
171 |                 Block::UnorderedList(items) => {
172 |                     text_lines.extend(self.build_list_box(items, Some(&self.theme.bullet)));
173 |                 }
174 |                 Block::OrderedList(items, _) => {
175 |                     text_lines.extend(self.build_list_box(items, None));
176 |                 }
177 |                 Block::Blockquote(blocks) => {
178 |                     if !text_lines.is_empty() {
179 |                         draw_boxes.push(DrawBox::Text(TextBox::new(
180 |                             text_lines,
181 |                             self.theme.vertical_offset,
182 |                             background_color,
183 |                             style.clone(),
184 |                         )));
185 |                         text_lines = Vec::new();
186 |                     }
187 |                     let (inner_blocks, image_path) = self.blocks_to_draw_boxes(
188 |                         blocks,
189 |                         Some(self.theme.blockquote_background_color),
190 |                         TextBoxStyle::Blockquote {
191 |                             size: self.theme.font_size_header_title * 2,
192 |                             font: self.font_text.clone(),
193 |                             color: self.theme.text_color,
194 |                         },
195 |                     );
196 |                     if image_path.is_some() {
197 |                         background_path = image_path;
198 |                     }
199 |                     draw_boxes.extend(inner_blocks);
200 |                 }
201 |                 Block::CodeBlock(language, code) => {
202 |                     if !text_lines.is_empty() {
203 |                         draw_boxes.push(DrawBox::Text(TextBox::new(
204 |                             text_lines,
205 |                             self.theme.vertical_offset,
206 |                             background_color,
207 |                             style.clone(),
208 |                         )));
209 |                         text_lines = Vec::new();
210 |                     }
211 |                     draw_boxes.push(DrawBox::Code(
212 |                         self.code_box_builder
213 |                             .build_draw_box(language.to_owned(), code.to_owned()),
214 |                     ));
215 |                 }
216 | 
217 |                 _ => (),
218 |             }
219 |         }
220 |         if !text_lines.is_empty() {
221 |             draw_boxes.push(DrawBox::Text(TextBox::new(
222 |                 text_lines,
223 |                 self.theme.vertical_offset,
224 |                 background_color,
225 |                 style,
226 |             )));
227 |         }
228 |         (draw_boxes, background_path)
229 |     }
230 | 
231 |     fn is_image(&self, spans: &[Span]) -> bool {
232 |         if let Some(span) = spans.first() {
233 |             return discriminant(span)
234 |                 == discriminant(&Span::Image("".to_string(), "".to_string(), None));
235 |         }
236 |         false
237 |     }
238 | 
239 |     fn spans_to_text_partials(
240 |         &self,
241 |         spans: &[Span],
242 |         font: Font,
243 |         font_size: FontSize,
244 |         color: Color,
245 |     ) -> Vec<TextPartial> {
246 |         let mut partials = vec![];
247 |         // TODO: Text with only newline should start new line
248 |         for span in spans.iter() {
249 |             match span {
250 |                 Span::Text(text) => partials.push(TextPartial::new(
251 |                     text,
252 |                     font.clone(),
253 |                     font_size,
254 |                     color,
255 |                     self.theme.line_height,
256 |                 )),
257 |                 Span::Code(text) => partials.push(TextPartial::new(
258 |                     text,
259 |                     self.font_code.clone(),
260 |                     font_size,
261 |                     self.theme.text_color, // TODO: Add code text color to theme
262 |                     self.theme.line_height,
263 |                 )),
264 |                 Span::Emphasis(spans) => partials.extend(self.spans_to_text_partials(
265 |                     spans,
266 |                     self.font_italic.clone(),
267 |                     font_size,
268 |                     color,
269 |                 )),
270 |                 Span::Strong(spans) => partials.extend(self.spans_to_text_partials(
271 |                     spans,
272 |                     self.font_bold.clone(),
273 |                     font_size,
274 |                     color,
275 |                 )),
276 |                 _ => (),
277 |             };
278 |         }
279 |         partials
280 |     }
281 | 
282 |     fn build_list_box(&self, items: &[ListItem], bullet: Option<&String>) -> Vec<TextLine> {
283 |         let mut lines: Vec<TextLine> = vec![];
284 |         for (index, item) in items.iter().enumerate() {
285 |             if let ListItem::Simple(spans) = item {
286 |                 let mut partials = vec![self.build_bullet_partial(index, bullet)];
287 |                 partials.extend(self.spans_to_text_partials(
288 |                     spans,
289 |                     self.font_text.clone(),
290 |                     self.theme.font_size_text,
291 |                     self.theme.text_color,
292 |                 ));
293 |                 let text_line = TextLine::new(DrawAlignment::left, partials);
294 |                 lines.push(text_line);
295 |             };
296 |         }
297 |         lines
298 |     }
299 | 
300 |     fn build_bullet_partial(&self, index: usize, bullet: Option<&String>) -> TextPartial {
301 |         let item_bullet = match bullet {
302 |             Some(b) => b.to_owned(),
303 |             None => format!("{}. ", index + 1),
304 |         };
305 |         TextPartial::new(
306 |             &item_bullet,
307 |             self.font_text.clone(),
308 |             self.theme.font_size_text,
309 |             self.theme.text_color,
310 |             self.theme.line_height,
311 |         )
312 |     }
313 | }
314 | 


--------------------------------------------------------------------------------
/src/prelude.rs:
--------------------------------------------------------------------------------
 1 | pub use crate::app_options::*;
 2 | pub use crate::clipboard::*;
 3 | pub use crate::code_box_builder::*;
 4 | pub use crate::codebox::*;
 5 | pub use crate::drawbox::*;
 6 | pub use crate::executable_code::*;
 7 | pub use crate::hex_color::*;
 8 | pub use crate::imagebox::*;
 9 | pub use crate::markdowntoslides::*;
10 | pub use crate::shaders::*;
11 | pub use crate::show_help::*;
12 | pub use crate::slider::*;
13 | pub use crate::textbox::*;
14 | pub use crate::theme::*;
15 | pub use crate::transition::*;
16 | pub use crate::transitioner::*;
17 | 
18 | pub type Vpos = f32;
19 | pub type Hpos = f32;
20 | pub type Duration = f32;
21 | pub type Width = f32;
22 | pub type Height = f32;
23 | pub type FontSize = u16;
24 | 


--------------------------------------------------------------------------------
/src/shaders.rs:
--------------------------------------------------------------------------------
 1 | pub mod crt {
 2 |     pub const FRAGMENT: &str = r#"#version 100
 3 |         precision lowp float;
 4 |         varying vec4 color;
 5 |         varying vec2 uv;
 6 | 
 7 |         uniform sampler2D Texture;
 8 |         // https://www.shadertoy.com/view/XtlSD7
 9 |         vec2 CRTCurveUV(vec2 uv)
10 |         {
11 |             uv = uv * 2.0 - 1.0;
12 |             vec2 offset = abs( uv.yx ) / vec2( 6.0, 4.0 );
13 |             uv = uv + uv * offset * offset;
14 |             uv = uv * 0.5 + 0.5;
15 |             return uv;
16 |         }
17 |         void DrawVignette( inout vec3 color, vec2 uv )
18 |         {
19 |             float vignette = uv.x * uv.y * ( 1.0 - uv.x ) * ( 1.0 - uv.y );
20 |             vignette = clamp( pow( 16.0 * vignette, 0.3 ), 0.0, 1.0 );
21 |             color *= vignette;
22 |         }
23 |         void DrawScanline( inout vec3 color, vec2 uv )
24 |         {
25 |             float iTime = 0.1;
26 |             float scanline = clamp( 0.95 + 0.05 * cos( 3.14 * ( uv.y + 0.008 * iTime ) * 240.0 * 1.0 ), 0.0, 1.0 );
27 |             float grille = 0.85 + 0.15 * clamp( 1.5 * cos( 3.14 * uv.x * 640.0 * 1.0 ), 0.0, 1.0 );
28 |             color *= scanline * grille * 1.2;
29 |         }
30 |         void main() {
31 |             vec2 crtUV = CRTCurveUV(uv);
32 | 
33 |             vec3 res = texture2D(Texture, uv).rgb * color.rgb;
34 | 
35 |             if (crtUV.x < 0.0 || crtUV.x > 1.0 || crtUV.y < 0.0 || crtUV.y > 1.0)
36 |             {
37 |                 res = vec3(0.0, 0.0, 0.0);
38 |             }
39 |             DrawVignette(res, crtUV);
40 |             DrawScanline(res, uv);
41 |             gl_FragColor = vec4(res, 1.0);
42 |         }
43 |     "#;
44 | 
45 |     pub const VERTEX: &str = r#"#version 100
46 |         attribute vec3 position;
47 |         attribute vec2 texcoord;
48 |         attribute vec4 color0;
49 |         varying lowp vec2 uv;
50 |         varying lowp vec4 color;
51 |         uniform mat4 Model;
52 |         uniform mat4 Projection;
53 |         void main() {
54 |             gl_Position = Projection * Model * vec4(position, 1);
55 |             color = color0 / 255.0;
56 |             uv = texcoord;
57 |         }
58 |     "#;
59 | }
60 | 


--------------------------------------------------------------------------------
/src/show_help.rs:
--------------------------------------------------------------------------------
 1 | use macroquad::{
 2 |     color::{Color, colors::WHITE},
 3 |     shapes::draw_rectangle,
 4 |     text::draw_text,
 5 |     window::{screen_height, screen_width},
 6 | };
 7 | 
 8 | pub struct ShowHelp {
 9 |     pub showing: bool,
10 | }
11 | 
12 | impl Default for ShowHelp {
13 |     fn default() -> Self {
14 |         Self::new()
15 |     }
16 | }
17 | 
18 | impl ShowHelp {
19 |     const BACKGROUND_COLOR: Color = Color::new(0.1, 0.1, 0.1, 0.5);
20 |     const FONT_COLOR: Color = WHITE;
21 |     const MARGIN: f32 = 60.;
22 |     const FONT_SIZE: f32 = 70.;
23 |     const LINE_OFFSET: f32 = 10.;
24 |     const HELP_TEXT: &'static str = include_str!("helptext.txt");
25 | 
26 |     pub fn new() -> Self {
27 |         Self { showing: false }
28 |     }
29 | 
30 |     pub fn draw(&self) {
31 |         if !self.showing {
32 |             return;
33 |         }
34 |         draw_rectangle(
35 |             Self::MARGIN,
36 |             Self::MARGIN,
37 |             screen_width() - Self::MARGIN * 2.,
38 |             screen_height() - Self::MARGIN * 2.,
39 |             Self::BACKGROUND_COLOR,
40 |         );
41 | 
42 |         let mut offset_y = Self::MARGIN + Self::FONT_SIZE + Self::LINE_OFFSET;
43 |         for line in Self::HELP_TEXT.split('\n') {
44 |             offset_y = self.draw_line(Self::MARGIN * 2., offset_y, line);
45 |         }
46 |     }
47 | 
48 |     pub fn toggle_show(&mut self) {
49 |         self.showing = !self.showing
50 |     }
51 | 
52 |     fn draw_line(&self, offset_x: f32, offset_y: f32, text: &str) -> f32 {
53 |         draw_text(text, offset_x, offset_y, Self::FONT_SIZE, Self::FONT_COLOR);
54 |         offset_y + Self::FONT_SIZE + Self::LINE_OFFSET
55 |     }
56 | }
57 | 


--------------------------------------------------------------------------------
/src/textbox.rs:
--------------------------------------------------------------------------------
  1 | use crate::prelude::*;
  2 | use macroquad::prelude::*;
  3 | 
  4 | #[derive(Clone)]
  5 | pub struct TextBox {
  6 |     width: Width,
  7 |     height: Height,
  8 |     margin: Height,
  9 |     padding: f32,
 10 |     offset_y: Vpos,
 11 |     background_color: Option<Color>,
 12 |     style: TextBoxStyle,
 13 |     lines: Vec<TextLine>,
 14 | }
 15 | 
 16 | impl TextBox {
 17 |     const BOX_PADDING: f32 = 20.;
 18 | 
 19 |     pub fn new(
 20 |         lines: Vec<TextLine>,
 21 |         margin: Height,
 22 |         background_color: Option<Color>,
 23 |         style: TextBoxStyle,
 24 |     ) -> Self {
 25 |         let mut width: Width = 0.;
 26 |         let mut height: Height = 0.;
 27 |         let mut offset_y: Vpos = 0.;
 28 |         for line in lines.iter() {
 29 |             width = width.max(line.width);
 30 |             offset_y = offset_y.max(line.offset_y);
 31 |             height += line.height;
 32 |         }
 33 |         Self {
 34 |             width,
 35 |             height,
 36 |             margin,
 37 |             padding: Self::BOX_PADDING,
 38 |             offset_y,
 39 |             background_color,
 40 |             style,
 41 |             lines,
 42 |         }
 43 |     }
 44 | 
 45 |     pub fn draw(&self, hpos: Hpos, vpos: Vpos) -> Vpos {
 46 |         let vpos = self.style.top_position(vpos, self);
 47 |         self.draw_background(hpos, vpos + self.margin);
 48 |         self.style.draw(hpos, vpos, self);
 49 |         let inner_hpos = hpos + self.padding;
 50 |         let mut new_position = vpos + self.padding + self.margin;
 51 |         for line in self.lines.iter() {
 52 |             let line_hpos = match line.align {
 53 |                 DrawAlignment::left => inner_hpos,
 54 |                 DrawAlignment::right => inner_hpos + self.width() - line.width,
 55 |                 DrawAlignment::center => inner_hpos + self.width() / 2. - line.width / 2.,
 56 |             };
 57 |             new_position = line.draw(line_hpos, new_position, self.offset_y);
 58 |         }
 59 |         vpos + self.height_with_margin()
 60 |     }
 61 | 
 62 |     pub fn draw_background(&self, hpos: Hpos, vpos: Vpos) {
 63 |         if let Some(color) = self.background_color {
 64 |             draw_rectangle(
 65 |                 hpos,
 66 |                 vpos,
 67 |                 self.width_with_padding(),
 68 |                 self.height_with_padding(),
 69 |                 color,
 70 |             );
 71 |         }
 72 |     }
 73 | 
 74 |     pub fn background_color(&self) -> Option<Color> {
 75 |         self.background_color
 76 |     }
 77 | 
 78 |     pub fn width(&self) -> Width {
 79 |         self.width
 80 |     }
 81 | 
 82 |     pub fn width_with_padding(&self) -> Width {
 83 |         self.width() + self.padding * 2.
 84 |     }
 85 | 
 86 |     pub fn height(&self) -> Height {
 87 |         self.height
 88 |     }
 89 | 
 90 |     pub fn height_with_padding(&self) -> Height {
 91 |         self.height() + self.padding * 2.
 92 |     }
 93 | 
 94 |     pub fn height_with_margin(&self) -> Height {
 95 |         self.height_with_padding() + self.margin
 96 |     }
 97 | }
 98 | 
 99 | #[derive(Clone)]
100 | pub struct TextLine {
101 |     width: Width,
102 |     height: Height,
103 |     offset_y: Vpos,
104 |     align: DrawAlignment,
105 |     partials: Vec<TextPartial>,
106 | }
107 | 
108 | impl TextLine {
109 |     pub fn new(align: DrawAlignment, partials: Vec<TextPartial>) -> Self {
110 |         let mut width: Width = 0.;
111 |         let mut height: Height = 0.;
112 |         let mut offset_y: Vpos = 0.;
113 |         for partial in &partials {
114 |             width += partial.width;
115 |             height = height.max(partial.height);
116 |             offset_y = offset_y.max(partial.offset_y);
117 |         }
118 |         Self {
119 |             width,
120 |             height,
121 |             offset_y,
122 |             align,
123 |             partials,
124 |         }
125 |     }
126 | 
127 |     fn draw(&self, start_hpos: Hpos, vpos: Vpos, offset_y: Vpos) -> Vpos {
128 |         let mut hpos = start_hpos;
129 |         for partial in &self.partials {
130 |             hpos = partial.draw(hpos, vpos, offset_y);
131 |         }
132 |         vpos + self.height
133 |     }
134 | }
135 | 
136 | #[derive(Clone)]
137 | pub struct TextPartial {
138 |     width: Width,
139 |     height: Height,
140 |     color: Color,
141 |     font: Font,
142 |     font_size: FontSize,
143 |     offset_y: Vpos,
144 |     text: String,
145 | }
146 | 
147 | impl TextPartial {
148 |     pub fn new(
149 |         text: &str,
150 |         font: Font,
151 |         font_size: FontSize,
152 |         color: Color,
153 |         line_height: Height,
154 |     ) -> Self {
155 |         let dimensions = measure_text(text, Some(&font), font_size, 1.);
156 |         Self {
157 |             width: dimensions.width,
158 |             height: font_size as Height * line_height,
159 |             color,
160 |             font,
161 |             font_size,
162 |             offset_y: dimensions.offset_y,
163 |             text: text.to_owned(),
164 |         }
165 |     }
166 | 
167 |     fn draw(&self, hpos: Hpos, vpos: Vpos, offset_y: Vpos) -> Vpos {
168 |         draw_text_ex(
169 |             &self.text,
170 |             hpos,
171 |             vpos + offset_y,
172 |             TextParams {
173 |                 font: Some(&self.font),
174 |                 font_size: self.font_size,
175 |                 color: self.color,
176 |                 ..Default::default()
177 |             },
178 |         );
179 |         hpos + self.width
180 |     }
181 | }
182 | #[derive(Clone)]
183 | pub enum TextBoxStyle {
184 |     Standard,
185 |     Title,
186 |     Blockquote {
187 |         size: FontSize,
188 |         font: Font,
189 |         color: Color,
190 |     },
191 |     Code,
192 | }
193 | 
194 | impl TextBoxStyle {
195 |     fn draw(&self, hpos: Hpos, vpos: Vpos, draw_box: &TextBox) {
196 |         if let TextBoxStyle::Blockquote { size, font, color } = self {
197 |             self.draw_blockquote(hpos, vpos, draw_box, *size, font.clone(), *color)
198 |         }
199 |     }
200 | 
201 |     fn top_position(&self, vpos: Vpos, draw_box: &TextBox) -> Vpos {
202 |         match self {
203 |             TextBoxStyle::Title => {
204 |                 screen_height() / 2.
205 |                     - draw_box.height / 2.
206 |                     - draw_box.margin
207 |                     - draw_box.padding
208 |                     - draw_box.offset_y
209 |             }
210 |             _ => vpos,
211 |         }
212 |     }
213 | 
214 |     fn draw_blockquote(
215 |         &self,
216 |         hpos: Hpos,
217 |         vpos: Vpos,
218 |         draw_box: &TextBox,
219 |         font_size: FontSize,
220 |         font: Font,
221 |         color: Color,
222 |     ) {
223 |         let text_params = TextParams {
224 |             font: Some(&font),
225 |             font_size,
226 |             color,
227 |             ..Default::default()
228 |         };
229 |         let dimensions = measure_text("“", Some(&font), font_size, 1.);
230 |         draw_text_ex(
231 |             "“",
232 |             hpos - dimensions.width,
233 |             vpos + font_size as Vpos,
234 |             text_params.clone(),
235 |         );
236 |         draw_text_ex(
237 |             "„",
238 |             hpos + draw_box.width_with_padding(),
239 |             vpos + draw_box.height_with_margin(),
240 |             text_params.clone(),
241 |         );
242 |     }
243 | }
244 | 


--------------------------------------------------------------------------------
/src/theme.rs:
--------------------------------------------------------------------------------
 1 | use crate::prelude::*;
 2 | use macroquad::prelude::{Color, WHITE, debug, load_string};
 3 | use nanoserde::DeJson;
 4 | use std::path::PathBuf;
 5 | 
 6 | #[derive(Clone, DeJson)]
 7 | #[nserde(default)]
 8 | pub struct Theme {
 9 |     pub background_image: Option<String>,
10 |     #[nserde(proxy = "HexColor")]
11 |     pub background_color: Color,
12 |     #[nserde(proxy = "HexColor")]
13 |     pub heading_color: Color,
14 |     #[nserde(proxy = "HexColor")]
15 |     pub text_color: Color,
16 |     pub align: DrawAlignment,
17 |     pub font: String,
18 |     pub font_bold: String,
19 |     pub font_italic: String,
20 |     pub font_size_header_title: FontSize,
21 |     pub font_size_header_slides: FontSize,
22 |     pub font_size_text: FontSize,
23 |     pub vertical_offset: Vpos,
24 |     pub horizontal_offset: Hpos,
25 |     pub line_height: Height,
26 |     #[nserde(proxy = "HexColor")]
27 |     pub blockquote_background_color: Color,
28 |     pub blockquote_padding: f32,
29 |     pub blockquote_left_quote: String,
30 |     pub blockquote_right_quote: String,
31 |     pub font_code: String,
32 |     pub font_code_size: FontSize,
33 |     pub code_line_height: Height,
34 |     #[nserde(proxy = "HexColor")]
35 |     pub code_background_color: Color,
36 |     pub code_theme: String,
37 |     pub code_tab_width: usize,
38 |     pub bullet: String,
39 |     pub shader: bool,
40 |     pub transition: Option<Transitioning>,
41 | }
42 | 
43 | impl Default for Theme {
44 |     fn default() -> Theme {
45 |         Theme {
46 |             background_image: None,
47 |             background_color: Color::from_rgba(48, 25, 52, 255),
48 |             heading_color: Color::from_rgba(177, 156, 217, 255),
49 |             text_color: WHITE,
50 |             align: DrawAlignment::center,
51 |             font: "assets/Amble-Regular.ttf".to_string(),
52 |             font_bold: "assets/Amble-Bold.ttf".to_string(),
53 |             font_italic: "assets/Amble-Italic.ttf".to_string(),
54 |             font_size_header_title: 100,
55 |             font_size_header_slides: 80,
56 |             font_size_text: 40,
57 |             vertical_offset: 20.0,
58 |             horizontal_offset: 20.0,
59 |             line_height: 2.0,
60 |             blockquote_background_color: Color::from_rgba(51, 51, 51, 255),
61 |             blockquote_padding: 20.,
62 |             blockquote_left_quote: "“".to_string(),
63 |             blockquote_right_quote: "„".to_string(),
64 |             font_code: "assets/Hack-Regular.ttf".to_string(),
65 |             font_code_size: 20,
66 |             code_line_height: 1.2,
67 |             code_background_color: Color::from_rgba(0, 43, 54, 255),
68 |             code_theme: "Solarized (dark)".to_string(),
69 |             code_tab_width: 4,
70 |             bullet: "• ".to_string(),
71 |             shader: true,
72 |             transition: Some(Transitioning::swiperight),
73 |         }
74 |     }
75 | }
76 | 
77 | impl Theme {
78 |     pub async fn load(theme_path: PathBuf) -> Self {
79 |         let path = theme_path.as_path().to_str().unwrap().to_owned();
80 |         debug!("Theme path: {}", path);
81 |         match load_string(&path).await {
82 |             Ok(json) => match DeJson::deserialize_json(&json) {
83 |                 Ok(theme) => theme,
84 |                 Err(_) => {
85 |                     eprintln!("Couldn't parse theme file: {}", path);
86 |                     std::process::exit(2);
87 |                 }
88 |             },
89 |             Err(_) => Theme::default(),
90 |         }
91 |     }
92 | }
93 | 


--------------------------------------------------------------------------------
/src/transition.rs:
--------------------------------------------------------------------------------
  1 | // MIT License
  2 | //
  3 | // Copyright (c) 2021 TanTanDev
  4 | //
  5 | // Permission is hereby granted, free of charge, to any person obtaining a copy
  6 | // of this software and associated documentation files (the "Software"), to deal
  7 | // in the Software without restriction, including without limitation the rights
  8 | // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  9 | // copies of the Software, and to permit persons to whom the Software is
 10 | // furnished to do so, subject to the following conditions:
 11 | //
 12 | // The above copyright notice and this permission notice shall be included in all
 13 | // copies or substantial portions of the Software.
 14 | //
 15 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 16 | // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 17 | // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 18 | // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 19 | // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 20 | // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 21 | // SOFTWARE.
 22 | 
 23 | use macroquad::prelude::*;
 24 | 
 25 | #[derive(Default)]
 26 | pub struct DrawParam {
 27 |     pub flip_y: bool,
 28 | }
 29 | 
 30 | pub struct Transition {
 31 |     pub material: Material,
 32 |     pub fade: f32,
 33 | }
 34 | 
 35 | impl Transition {
 36 |     pub fn draw(&mut self, base_texture: Texture2D, into_texture: Texture2D, progress: f32) {
 37 |         self.draw_ex(base_texture, into_texture, progress, DrawParam::default());
 38 |     }
 39 | 
 40 |     pub fn draw_ex(
 41 |         &mut self,
 42 |         base_texture: Texture2D,
 43 |         into_texture: Texture2D,
 44 |         progress: f32,
 45 |         draw_param: DrawParam,
 46 |     ) {
 47 |         self.material.set_uniform("cutoff", progress);
 48 |         self.material.set_uniform("fade", self.fade);
 49 |         self.material.set_texture("tex_into", into_texture);
 50 |         gl_use_material(&self.material);
 51 |         clear_background(WHITE);
 52 |         draw_texture_ex(
 53 |             &base_texture,
 54 |             -1.,
 55 |             -1.,
 56 |             WHITE,
 57 |             DrawTextureParams {
 58 |                 dest_size: Some(vec2(2., 2.)),
 59 |                 flip_y: draw_param.flip_y,
 60 |                 ..Default::default()
 61 |             },
 62 |         );
 63 |         gl_use_default_material();
 64 |     }
 65 | 
 66 |     pub fn change_transition_tex(&mut self, texture: Texture2D) {
 67 |         self.material.set_texture("tex_transition", texture);
 68 |     }
 69 | 
 70 |     pub fn new(transition_tex: Texture2D, fade: f32) -> Self {
 71 |         let pipeline_params = PipelineParams {
 72 |             depth_write: true,
 73 |             depth_test: Comparison::LessOrEqual,
 74 |             ..Default::default()
 75 |         };
 76 | 
 77 |         let material = load_material(
 78 |             ShaderSource::Glsl {
 79 |                 vertex: DEFAULT_VERTEX_SHADER,
 80 |                 fragment: DEFAULT_FRAGMENT_SHADER,
 81 |             },
 82 |             MaterialParams {
 83 |                 textures: vec!["tex_transition".to_string(), "tex_into".to_string()],
 84 |                 uniforms: vec![
 85 |                     UniformDesc::new("cutoff", UniformType::Float1),
 86 |                     UniformDesc::new("fade", UniformType::Float1),
 87 |                 ],
 88 |                 pipeline_params,
 89 |             },
 90 |         )
 91 |         .unwrap();
 92 | 
 93 |         material.set_texture("tex_transition", transition_tex);
 94 |         Transition { material, fade }
 95 |     }
 96 | }
 97 | 
 98 | const DEFAULT_FRAGMENT_SHADER: &str = "#version 100
 99 |     precision lowp float;
100 |     varying vec2 uv;
101 | 
102 |     uniform float cutoff;
103 |     uniform float fade;
104 |     // base texture
105 |     uniform sampler2D Texture;
106 |     uniform sampler2D tex_into;
107 |     uniform sampler2D tex_transition;
108 | 
109 |     varying vec4 color;
110 | 
111 |     void main() {
112 |         float transition = texture2D(tex_transition, uv).r;
113 |         vec4 base_color = texture2D(Texture, uv);
114 |         vec4 into_color = texture2D(tex_into, uv);
115 | 
116 |         // remap transition from 0-1 to fade -> 1.0-fade
117 |         transition = transition * (1.0 - fade) + fade;
118 |         float f = smoothstep(cutoff, cutoff + fade, transition);
119 |         gl_FragColor = mix(base_color, into_color, f); 
120 |     }
121 | ";
122 | 
123 | const DEFAULT_VERTEX_SHADER: &str = "#version 100
124 |     attribute vec3 position;
125 |     attribute vec2 texcoord;
126 |     varying vec2 uv;
127 | 
128 |     void main() {
129 |         gl_Position = vec4(position, 1);
130 |         uv = texcoord;
131 |     }
132 | ";
133 | 


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/src/transitioner.rs:
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  1 | use crate::prelude::*;
  2 | use std::{
  3 |     collections::HashMap,
  4 |     fmt,
  5 |     path::{Path, PathBuf},
  6 | };
  7 | use {macroquad::prelude::*, nanoserde::DeJson};
  8 | use {strum::IntoEnumIterator, strum_macros::EnumIter};
  9 | 
 10 | #[allow(non_camel_case_types)]
 11 | #[derive(Copy, Clone, Debug, Hash, Eq, PartialEq, PartialOrd, Ord, DeJson, EnumIter)]
 12 | pub enum Transitioning {
 13 |     bignoise,
 14 |     blobs,
 15 |     checkerboard,
 16 |     circleswipe,
 17 |     cubicnoise,
 18 |     curtainsclose,
 19 |     curtainsopen,
 20 |     diagonalleft,
 21 |     diagonalright,
 22 |     fan,
 23 |     halftone,
 24 |     implode,
 25 |     lines,
 26 |     maze,
 27 |     mosaic,
 28 |     noise,
 29 |     plasma,
 30 |     radialin,
 31 |     radialout,
 32 |     smoke,
 33 |     split,
 34 |     starburst,
 35 |     stripes,
 36 |     swipedown,
 37 |     swipeleft,
 38 |     swiperight,
 39 |     swipeup,
 40 |     swirl,
 41 |     triangles,
 42 |     vortex,
 43 |     waves,
 44 |     zebra,
 45 | }
 46 | 
 47 | impl Default for Transitioning {
 48 |     fn default() -> Self {
 49 |         Transitioning::split
 50 |     }
 51 | }
 52 | 
 53 | impl fmt::Display for Transitioning {
 54 |     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
 55 |         write!(f, "{:?}", self)
 56 |     }
 57 | }
 58 | 
 59 | impl Transitioning {
 60 |     pub fn texture<P>(&self, directory: P) -> PathBuf
 61 |     where
 62 |         P: AsRef<Path>,
 63 |     {
 64 |         Self::with_dir(directory, self.filename())
 65 |     }
 66 | 
 67 |     fn filename(&self) -> String {
 68 |         format!("transitions/{}.png", self)
 69 |     }
 70 | 
 71 |     fn with_dir<P>(directory: P, path: String) -> PathBuf
 72 |     where
 73 |         P: AsRef<Path>,
 74 |     {
 75 |         let mut dir = directory.as_ref().to_path_buf();
 76 |         dir.push(path);
 77 |         dir.as_path().to_owned()
 78 |     }
 79 | }
 80 | 
 81 | pub struct Transitioner {
 82 |     render_target: RenderTarget,
 83 |     transition: Transition,
 84 |     transition_progress: Duration,
 85 |     pub transitioning: bool,
 86 |     textures: HashMap<Transitioning, Texture2D>,
 87 |     transitions: Vec<Transitioning>,
 88 |     current_transition: usize,
 89 | }
 90 | 
 91 | impl Transitioner {
 92 |     const TRANSITIONING_TIME: Duration = 1.0;
 93 | 
 94 |     pub async fn load<P>(asset_dir: P, transitioning: Transitioning, fade: f32) -> Self
 95 |     where
 96 |         P: AsRef<Path>,
 97 |     {
 98 |         let mut textures: HashMap<Transitioning, Texture2D> = HashMap::new();
 99 |         for transitioning in Transitioning::iter() {
100 |             let transition_tex: Texture2D =
101 |                 load_texture(transitioning.texture(&asset_dir).to_str().unwrap())
102 |                     .await
103 |                     .expect("Failed loading transition texture");
104 |             textures.insert(transitioning, transition_tex);
105 |         }
106 |         let mut transitions = textures.keys().cloned().collect::<Vec<Transitioning>>();
107 |         transitions.sort();
108 |         let transition = Transition::new(textures.get(&transitioning).unwrap().to_owned(), fade);
109 |         let render_target = render_target(screen_width() as u32, screen_height() as u32);
110 |         render_target.texture.set_filter(FilterMode::Linear);
111 |         Self {
112 |             render_target,
113 |             transition,
114 |             transition_progress: 0.,
115 |             transitioning: false,
116 |             textures,
117 |             transitions,
118 |             current_transition: 0,
119 |         }
120 |     }
121 | 
122 |     pub fn start(&mut self) {
123 |         self.transition_progress = 0.;
124 |         self.transitioning = true;
125 |     }
126 | 
127 |     pub fn stop(&mut self) {
128 |         self.transition_progress = 0.;
129 |         self.transitioning = false;
130 |     }
131 | 
132 |     pub fn current_transition(&self) -> Option<&Transitioning> {
133 |         self.transitions.get(self.current_transition)
134 |     }
135 | 
136 |     pub fn set_transition(&mut self, transitioning: &Transitioning) {
137 |         self.transition
138 |             .change_transition_tex(self.textures.get(transitioning).unwrap().to_owned());
139 |     }
140 | 
141 |     pub fn next_transition(&mut self) {
142 |         self.current_transition += 1;
143 |         if self.current_transition == self.textures.len() {
144 |             self.current_transition = 0;
145 |         }
146 |     }
147 | 
148 |     pub fn update(&mut self, delta: Duration) {
149 |         if !self.transitioning {
150 |             return;
151 |         }
152 |         self.transition_progress += delta * 2.;
153 |         if self.transition_progress > Self::TRANSITIONING_TIME {
154 |             self.stop();
155 |         }
156 |     }
157 | 
158 |     pub fn draw(&mut self, from_texture: Texture2D, to_texture: Texture2D) {
159 |         let mut render_target_camera =
160 |             Camera2D::from_display_rect(Rect::new(0., 0., screen_width(), screen_height()));
161 |         render_target_camera.render_target = Some(self.render_target.clone());
162 |         set_camera(&render_target_camera);
163 | 
164 |         self.transition
165 |             .draw(to_texture, from_texture, self.transition_progress);
166 |     }
167 | 
168 |     pub fn texture(&self) -> Texture2D {
169 |         self.render_target.texture.clone()
170 |     }
171 | }
172 | 


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