├── .github ├── CONTRIBUTING.md ├── ISSUE_TEMPLATE │ ├── bug_report.yml │ └── config.yml └── workflows │ └── ci.yml ├── .gitignore ├── LICENSE.txt ├── README.md ├── autoload ├── lumen.vim └── lumen │ ├── debug.vim │ ├── platforms.vim │ └── platforms │ ├── linux.vim │ ├── macos.vim │ ├── macos │ └── watcher.swift │ ├── windows.vim │ └── windows │ └── watcher.ps1 ├── doc └── lumen.txt ├── lua └── lumen │ └── health.lua ├── plugin └── lumen.vim └── tests ├── Dockerfile ├── Makefile ├── README.md ├── gdbus ├── run_test.vim ├── test_general.vim └── vimrc /.github/CONTRIBUTING.md: -------------------------------------------------------------------------------- 1 | # Contributing 2 | 3 | ## Issues and bug reports 4 | When reporting issues, please include your vim config if relevant. If you don't know what parts of your config are relevant, it is okay to just paste your entire config. 5 | Often it is also helpful to include the output of `:echo lumen#debug#info()` or `:checkhealth lumen` in neovim. 6 | 7 | ## Development 8 | Code contributions are much welcomed and appreciated. 9 | Here are a few guidelines to help you get started: 10 | 11 | ### Code Guidelines 12 | - If you add a new option, document it in the vim help file. Documenting it in the [README](/README.md) is NOT sufficient (and not even needed for most options). Take a look at [the existing helpfile](/doc/lumen.txt) and document in a similar style. 13 | - Never change basic vim options just because they make more sense for you. Plugins should never overwrite unrelated settings 14 | - Only add comments if they bring extra info to the table, don't just reiterate obvious code 15 | - Often good variable names are much more worth than comments 16 | - If you need more than 10 seconds to understand a single line of code, then absolutely DO add a comment 17 | - If you implement a feature only for Neovim, write it in such an abstract way that it is easy to add a Vim implementation later 18 | - Similarly if you implement a feature only for one platform, write it in such an abstract way that it is easy to add another platform implementation later 19 | 20 | ### Testing 21 | Always run the testing suite before submitting a patch, so that you don't break any functionality. 22 | For more info about this take a look at the [documentation](/tests/README.md). 23 | 24 | Similarly, if your patch fixes a bug, it would be good if you can add a test that fails before your patch and passes after your patch. 25 | You can take a look at some existing test files to help you get started. 26 | 27 | ### Submitting Patches 28 | You can either submit your changes as a pull request on Github or send them via email to me. In the latter case make sure that your email client does not break the formatting of your patch, I recommend using `git send-email` for this. 29 | 30 | ### Developer's Certificate of Origin 31 | By making a contribution to this project, I certify that: 32 | 33 | 1. The contribution was created in whole or in part by me and I have the right to submit it under the open source license indicated in the file; or 34 | 2. The contribution is based upon previous work that, to the best of my knowledge, is covered under an appropriate open source license and I have the right under that license to submit that work with modifications, whether created in whole or in part by me, under the same open source license (unless I am permitted to submit under a different license), as indicated in the file; or 35 | 3. The contribution was provided directly to me by some other person who certified (1), (2) or (3) and I have not modified it. 36 | 4. I understand and agree that this project and the contribution are public and that a record of the contribution (including all personal information I submit with it, including my sign-off) is maintained indefinitely and may be redistributed consistent with this project or the open source license(s) involved. 37 | -------------------------------------------------------------------------------- /.github/ISSUE_TEMPLATE/bug_report.yml: -------------------------------------------------------------------------------- 1 | name: Guided bug report 2 | description: "File a bug report. If you know what you are doing, feel free to open a blank issue below." 3 | body: 4 | - type: textarea 5 | id: description 6 | attributes: 7 | label: Describe the bug 8 | placeholder: A clear and concise description of what the bug is. 9 | validations: 10 | required: true 11 | - type: textarea 12 | id: reproduce 13 | attributes: 14 | label: To reproduce 15 | placeholder: Steps to reproduce the behavior. 16 | validations: 17 | required: false 18 | - type: textarea 19 | id: expected 20 | attributes: 21 | label: Expected behavior 22 | placeholder: A clear and concise description of what you expected to happen. 23 | validations: 24 | required: false 25 | - type: textarea 26 | id: debug 27 | attributes: 28 | label: Debug output 29 | description: "Please copy and paste the output of `:echo lumen#debug#info()` inside vim, if relevant." 30 | placeholder: ":echo lumen#debug#info()" 31 | render: Text 32 | validations: 33 | required: false 34 | -------------------------------------------------------------------------------- /.github/ISSUE_TEMPLATE/config.yml: -------------------------------------------------------------------------------- 1 | blank_issues_enabled: true 2 | -------------------------------------------------------------------------------- /.github/workflows/ci.yml: -------------------------------------------------------------------------------- 1 | name: Testing suite 2 | on: [push, pull_request] 3 | jobs: 4 | build: 5 | runs-on: ubuntu-latest 6 | steps: 7 | - uses: actions/checkout@v4 8 | - name: Build the Docker image 9 | run: docker build -t vim-lumen -f tests/Dockerfile . 10 | - name: Run tests with vim 11 | run: docker run -t vim-lumen make tests_vim 12 | - name: Run tests with neovim 13 | run: docker run -t vim-lumen make tests_neovim 14 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | *.swp 2 | *.log 3 | /doc/tags 4 | autoload/lumen/platforms/macos/watcher 5 | -------------------------------------------------------------------------------- /LICENSE.txt: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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If the Program does not specify a version number of the 576 | GNU General Public License, you may choose any version ever published 577 | by the Free Software Foundation. 578 | 579 | If the Program specifies that a proxy can decide which future 580 | versions of the GNU General Public License can be used, that proxy's 581 | public statement of acceptance of a version permanently authorizes you 582 | to choose that version for the Program. 583 | 584 | Later license versions may give you additional or different 585 | permissions. However, no additional obligations are imposed on any 586 | author or copyright holder as a result of your choosing to follow a 587 | later version. 588 | 589 | 15. Disclaimer of Warranty. 590 | 591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 592 | APPLICABLE LAW. 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Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | {one line to give the program's name and a brief idea of what it does.} 635 | Copyright (C) {year} {name of author} 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | {project} Copyright (C) {year} {fullname} 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # vim-lumen 2 | 3 | This plugin enables vim to follow the global system-wide dark mode preference of your platform. 4 | 5 | https://user-images.githubusercontent.com/21310755/225781457-2a1e4f26-fbd5-4c08-a75e-2c2f931488b3.mp4 6 | 7 | Supported platforms are **Linux**, **MacOS** and **Windows**. All platform implementations are interrupt-based and do not use any resources in the background because they avoid polling and use the proper system APIs instead. 8 | 9 | # Installation 10 | 11 | With `vim-plug` add the following line to your `.vimrc`: 12 | 13 | ```vim 14 | Plug 'vimpostor/vim-lumen' 15 | ``` 16 | 17 | Once a system dark mode preference change is detected, this plugin will set the `background` vim option accordingly, so make sure that your colorscheme supports reloading as described in `:h 'background'`. 18 | 19 | # Dependencies 20 | 21 | ## Linux 22 | 23 | On Linux it is required that you have `gdbus` installed together with **one** of the following options: 24 | 25 | - KDE Plasma 5.24 (or later) or 26 | - Gnome 42 (or later) or 27 | - [darkman](https://gitlab.com/WhyNotHugo/darkman) (Recommended for tiling WMs) or 28 | - [color-scheme-simulator](https://gitlab.gnome.org/exalm/color-scheme-simulator) 29 | 30 | Make sure that the `xdg-desktop-portal` is running. 31 | 32 | ## MacOS 33 | 34 | It is required that Swift is available on your system. Swift is shipped with Xcode for example. 35 | 36 | ## Windows 37 | 38 | At least Windows 10 1903 is required. No further installed components are needed. 39 | This also works inside WSL2. 40 | 41 | # FAQ 42 | 43 | ## Is this plugin still needed with latest Vim? 44 | 45 | With Neovim [implementing support](https://github.com/neovim/neovim/pull/31350) for [DEC mode 2031](https://contour-terminal.org/vt-extensions/color-palette-update-notifications/) this plugin has become obsolete. 46 | You can now use the native support for theme changes by reacting to `autocmd OptionSet background`, as long as the entire chain of your terminal emulator, terminal multiplexer and your version of vim support it. 47 | 48 | ## How can I add custom callbacks? 49 | 50 | You can use the `LumenLight` and `LumenDark` `User` autocommands: 51 | ```vim 52 | au User LumenLight echom 'Entered light mode' 53 | au User LumenDark echom 'Entered dark mode' 54 | ``` 55 | 56 | Note that for the common usecase of switching the colorscheme, there are the `g:lumen_light_colorscheme` and `g:lumen_dark_colorscheme` variables. 57 | 58 | ## What are some good light colorschemes? 59 | 60 | There are not many colorschemes that work well both in light and dark mode. 61 | Here are some example colorschemes that I can personally recommend: 62 | 63 | - [everforest](https://github.com/sainnhe/everforest) 64 | - [papercolor](https://github.com/NLKNguyen/papercolor-theme) 65 | - [prism](https://github.com/vimpostor/vim-prism) 66 | - `retrobox` from the [default Vim colorschemes](https://github.com/vim/colorschemes) 67 | 68 | ## Why not use the new SIGWINCH autocmd in neovim? 69 | 70 | Neovim recently merged [support for SIGWINCH autocmds](https://github.com/neovim/neovim/pull/18029). It is possible to hack together dark mode support by abusing the `SIGWINCH` autocmd, but this has quite a few disadvantages: 71 | 72 | - You require a terminal that sends `SIGWINCH` when the system-wide dark mode preference changes. At the moment, pretty much no terminal supports this besides `iTerm` 73 | - The `SIGWINCH` event is fired regularly for other events. For example while resizing the window, `SIGWINCH` can be emitted many times per second, which causes performance issues due to checking the system dark mode preference multiple times per second 74 | - `SIGWINCH` is not really intended for this usecase at all. You are abusing a signal that is originally only meant to be fired when the terminal size changes 75 | - There is only `SIGWINCH` support in `neovim`, whereas this plugin also supports regular vim 76 | -------------------------------------------------------------------------------- /autoload/lumen.vim: -------------------------------------------------------------------------------- 1 | let s:background = "" 2 | let s:exit_code = -1 3 | 4 | func lumen#init() 5 | if !exists('g:lumen_startup_overwrite') 6 | let g:lumen_startup_overwrite = 1 7 | endif 8 | 9 | let s:is_nvim = has('nvim') 10 | if g:lumen_startup_overwrite 11 | call lumen#oneshot() 12 | endif 13 | 14 | augroup lumeni 15 | if v:vim_did_enter 16 | call lumen#fork_job() 17 | else 18 | au VimEnter * call lumen#fork_job() 19 | endif 20 | augroup END 21 | endfunc 22 | 23 | func lumen#apply_colorscheme() 24 | " apply colorscheme from g:lumen_light_colorscheme/g:lumen_dark_colorscheme 25 | let v = get(g:, printf("lumen_%s_colorscheme", s:background), '') 26 | if len(v) && get(g:, 'colors_name', '') != v 27 | exe printf("colorscheme %s", v) 28 | endif 29 | endfunc 30 | 31 | func lumen#light_hook() 32 | if s:background == 'light' && &background == s:background 33 | return 34 | endif 35 | 36 | 37 | set background=light 38 | let s:background = &background 39 | call lumen#apply_colorscheme() 40 | if exists('#User#LumenLight') 41 | doautocmd User LumenLight 42 | endif 43 | endfunc 44 | 45 | func lumen#dark_hook() 46 | if s:background == 'dark' && &background == s:background 47 | return 48 | endif 49 | 50 | 51 | set background=dark 52 | let s:background = &background 53 | call lumen#apply_colorscheme() 54 | if exists('#User#LumenDark') 55 | doautocmd User LumenDark 56 | endif 57 | endfunc 58 | 59 | func lumen#oneshot() 60 | call lumen#platforms#call("oneshot") 61 | endfunc 62 | 63 | func lumen#parse_output(line) 64 | call lumen#platforms#call("parse_line", [a:line]) 65 | endfunc 66 | 67 | func lumen#on_stdout(chan_id, data, name) 68 | let s:lines[-1] .= a:data[0] 69 | call extend(s:lines, a:data[1:]) 70 | while len(s:lines) > 1 71 | let line = remove(s:lines, 0) 72 | call lumen#parse_output(line) 73 | endwhile 74 | endfunc 75 | 76 | func lumen#out_cb(channel, msg) 77 | call lumen#parse_output(a:msg) 78 | endfunc 79 | 80 | func lumen#on_stderr(chan_id, data, name) 81 | let s:elines[-1] .= a:data[0] 82 | call extend(s:elines, a:data[1:]) 83 | while len(s:elines) > 1 84 | let line = remove(s:elines, 0) 85 | call lumen#debug#log_err(line) 86 | endwhile 87 | endfunc 88 | 89 | func lumen#err_cb(channel, msg) 90 | call lumen#debug#log_err(a:msg) 91 | endfunc 92 | 93 | func lumen#on_exit(job, code, t) 94 | let s:exit_code = a:code 95 | endfunc 96 | 97 | func lumen#exit_cb(job, code) 98 | let s:exit_code = a:code 99 | endfunc 100 | 101 | func lumen#fork_job() 102 | au! lumeni 103 | 104 | let command = lumen#platforms#call("watch_cmd") 105 | if empty(command) 106 | return 107 | endif 108 | 109 | if s:is_nvim 110 | let s:lines = [''] 111 | let s:elines = [''] 112 | let options = #{on_stdout: function('lumen#on_stdout'), on_stderr: function('lumen#on_stderr'), on_exit: function('lumen#on_exit')} 113 | silent! let s:job = jobstart(command, options) 114 | if s:job == 0 || s:job == -1 115 | call lumen#debug#log_err('jobstart() failed: ' . v:errmsg) 116 | call lumen#on_exit(0, 256 - s:job, 0) 117 | endif 118 | else 119 | let options = #{out_cb: function('lumen#out_cb'), err_cb: function('lumen#err_cb'), exit_cb: function('lumen#exit_cb')} 120 | let s:job = job_start(command, options) 121 | endif 122 | endfunc 123 | 124 | func lumen#job_state() 125 | let res = "" 126 | if s:is_nvim 127 | let pid = 0 128 | if s:exit_code < 0 129 | let pid = jobpid(s:job) 130 | endif 131 | let res = pid ? "run as PID " . pid : "dead" 132 | else 133 | let res = job_status(s:job) 134 | endif 135 | if s:exit_code > -1 136 | let res .= printf(" (exit code %d)", s:exit_code) 137 | endif 138 | 139 | return res 140 | endfunc 141 | -------------------------------------------------------------------------------- /autoload/lumen/debug.vim: -------------------------------------------------------------------------------- 1 | let s:stderr = [] 2 | 3 | func lumen#debug#info() 4 | let job_state = lumen#job_state() 5 | let platform = lumen#platforms#platform() 6 | return {'platform': platform, 'job_state': job_state, 'job_errors': s:stderr, 'shell': &shell} 7 | endfunc 8 | 9 | func lumen#debug#log_err(line) 10 | call add(s:stderr, a:line) 11 | endfunc 12 | -------------------------------------------------------------------------------- /autoload/lumen/platforms.vim: -------------------------------------------------------------------------------- 1 | let s:platform = '' 2 | if has('win32') || exists('$WSLENV') 3 | let s:platform = 'windows' 4 | elseif has('linux') 5 | let s:platform = 'linux' 6 | elseif has('osx') 7 | let s:platform = 'macos' 8 | endif 9 | 10 | func lumen#platforms#call(func, ...) 11 | if empty(s:platform) 12 | return 13 | endif 14 | 15 | let args = [] 16 | if a:0 > 0 17 | let args = a:1 18 | endif 19 | let Func = function("lumen#platforms#" . s:platform . "#" . a:func, args) 20 | return Func() 21 | endfunc 22 | 23 | func lumen#platforms#platform() 24 | return s:platform 25 | endfunc 26 | -------------------------------------------------------------------------------- /autoload/lumen/platforms/linux.vim: -------------------------------------------------------------------------------- 1 | let s:watched_line = "/org/freedesktop/portal/desktop: org.freedesktop.portal.Settings.SettingChanged ('org.freedesktop.appearance', 'color-scheme', split() 7 | endfunc 8 | 9 | func lumen#platforms#linux#parse_line(line) 10 | if match(a:line, s:watched_line) == 0 11 | " 0 is ASCII 48 12 | let val = strgetchar(a:line, strchars(a:line) - 3) - 48 13 | " 0 = No preference 14 | " 1 = Prefer Dark 15 | " 2 = Prefer Light 16 | if val == 2 || val == 0 17 | " We have to add this workaround, because Gnome returns 0 (No preference) when the user prefers a light theme 18 | " Perhaps a g:my_next_de_wont_be_gnome variable should optionally enable this workaround instead 19 | call lumen#light_hook() 20 | elseif val == 1 21 | call lumen#dark_hook() 22 | endif 23 | endif 24 | endfunc 25 | 26 | func lumen#platforms#linux#oneshot() 27 | silent let out = trim(system('gdbus call -t 1 --session --dest=org.freedesktop.portal.Desktop --object-path=/org/freedesktop/portal/desktop --method=org.freedesktop.portal.Settings.Read org.freedesktop.appearance color-scheme')) 28 | if match(out, "(<)") 30 | else 31 | call lumen#debug#log_err(out) 32 | endif 33 | endfunc 34 | -------------------------------------------------------------------------------- /autoload/lumen/platforms/macos.vim: -------------------------------------------------------------------------------- 1 | let s:exe = fnameescape(resolve(expand(':p:h')) . '/macos/watcher') 2 | 3 | func lumen#platforms#macos#watch_cmd() 4 | return [s:exe] 5 | endfunc 6 | 7 | func lumen#platforms#macos#parse_line(line) 8 | if a:line == "Dark_" 9 | call lumen#dark_hook() 10 | else 11 | call lumen#light_hook() 12 | endif 13 | endfunc 14 | 15 | func lumen#platforms#macos#oneshot() 16 | silent let out = get(systemlist(printf("%s get", s:exe)), 0) 17 | if len(out) != 5 18 | let err = out 19 | silent let compile = system(printf("swiftc %1$s.swift -o %1$s", s:exe)) 20 | " fallback 21 | silent let out = get(systemlist(s:exe . ".swift get"), 0) 22 | endif 23 | 24 | if len(out) == 5 25 | call lumen#platforms#macos#parse_line(out) 26 | else 27 | call lumen#debug#log_err(err) 28 | call lumen#debug#log_err(compile) 29 | call lumen#debug#log_err(out) 30 | endif 31 | endfunc 32 | -------------------------------------------------------------------------------- /autoload/lumen/platforms/macos/watcher.swift: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env swift 2 | 3 | // Based on https://github.com/mnewt/dotemacs/blob/master/bin/dark-mode-notifier.swift (Unlicense license) 4 | 5 | import Cocoa 6 | import Darwin 7 | 8 | setbuf(stdout, nil); // don't buffer the output 9 | 10 | var isAppearanceDark: Bool { 11 | if #available(macOS 11.0, *) { 12 | return NSAppearance.currentDrawing().bestMatch(from: [.darkAqua, .aqua]) == .darkAqua 13 | } else { 14 | return NSAppearance.current.bestMatch(from: [.darkAqua, .aqua]) == .darkAqua 15 | } 16 | } 17 | 18 | func printAppearance() { 19 | print(isAppearanceDark ? "Dark_" : "Light") 20 | } 21 | 22 | if CommandLine.arguments.dropFirst(1).first == "get" { 23 | printAppearance() 24 | exit(0) 25 | } 26 | 27 | DistributedNotificationCenter.default.addObserver( 28 | forName: Notification.Name("AppleInterfaceThemeChangedNotification"), 29 | object: nil, 30 | queue: nil) { _ in 31 | printAppearance() 32 | } 33 | 34 | NSApplication.shared.run() 35 | -------------------------------------------------------------------------------- /autoload/lumen/platforms/windows.vim: -------------------------------------------------------------------------------- 1 | func lumen#platforms#windows#watch_cmd() 2 | return ["powershell.exe", "-ExecutionPolicy", "Bypass", "-File", glob(resolve(expand('