├── .gitignore ├── .travis.yml ├── LICENSE ├── README.md ├── documents └── overview-output.png ├── examples ├── children.js ├── dummy-notepad.js ├── overview.js └── scroll.js ├── package-lock.json ├── package.json ├── setup └── ts-node-reigister-for-test.js ├── src ├── border.ts ├── box.ts ├── index.ts ├── matrix.ts ├── rectangle.ts ├── scroll-bar.ts ├── typings │ └── global.d.ts └── utils.ts ├── test ├── border.ts ├── box.ts ├── index.ts ├── matrix.ts ├── rectangle.ts ├── scroll-bar.ts └── utils.ts └── tsconfigs ├── base.json ├── build.json └── test.json /.gitignore: -------------------------------------------------------------------------------- 1 | /node_modules/ 2 | 3 | /dist/ 4 | /examples/tmp.js 5 | -------------------------------------------------------------------------------- /.travis.yml: -------------------------------------------------------------------------------- 1 | language: node_js 2 | node_js: 3 | - "10" 4 | before_script: 5 | - npm run test 6 | - npm run build 7 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | MIT License 2 | 3 | Copyright (c) 2017 Koujirou Ishii 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 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # tilto 2 | 3 | [![Build Status](https://travis-ci.org/kjirou/tilto.svg?branch=master)](https://travis-ci.org/kjirou/tilto) 4 | 5 | A TUI (Text User Interface) renderer 6 | 7 | 8 | ## :rocket: Installation 9 | 10 | ```bash 11 | npm install tilto 12 | ``` 13 | 14 | 15 | ## :eyes: Overview 16 | 17 | ```js 18 | const tilto = require('tilto'); 19 | 20 | const box = tilto.createBox({width: 20, height: 6}); 21 | 22 | box.borders = tilto.createBordersByType('default'); 23 | box.content = 'The quick brown fox jumps over the lazy dog.'; 24 | console.log(tilto.render(box)); 25 | 26 | const ansiRed = '\u001b[31m'; 27 | const ansiGreen = '\u001b[32m'; 28 | const ansiReset = '\u001b[0m'; 29 | box.content = 'It also supports マルチバイト文字, Surrogate-pairs and ' + 30 | `${ansiRed}ANSI${ansiReset} ${ansiGreen}escape${ansiReset} codes.`; 31 | console.log(tilto.render(box)); 32 | 33 | box.content = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11'].join('\n'); 34 | box.scroll = { 35 | y: 4, 36 | }; 37 | console.log(tilto.render(box)); 38 | ``` 39 | 40 | :point_down: 41 | 42 | ![](/documents/overview-output.png) 43 | 44 | See also [examples](/examples). 45 | 46 | 47 | ## :page_facing_up: About Basic Design 48 | 49 | The `render` method receives a syntax tree expressed by pure-object and converts it to a rectangular string. 50 | 51 | You can change the output by modifying the arguments according to the schema. 52 | Also, [some utilities for that are defined as public API](/src/index.ts). 53 | 54 | In this case, it is recommended to use a library that can safely update objects such as [immer](https://github.com/mweststrate/immer). 55 | 56 | The schema of that is the following image if it is expressed by TypeScript. 57 | If you want to know more about schema, please refer to the source code. 58 | 59 | ```ts 60 | type Box = { 61 | borders: Borders; 62 | children: Box[]; 63 | content: string, 64 | matrix: Matrix, 65 | scroll?: { 66 | thumbElement?: ElementBody, 67 | trackElement?: ElementBody, 68 | y: number, 69 | }, 70 | symbolRuler: SymbolRuler, 71 | x: number, 72 | y: number, 73 | zIndex: number, 74 | }; 75 | ``` 76 | 77 | 78 | ## :wrench: Development 79 | ### Softwares that needs to be locally installed 80 | 81 | - [Node.js](https://nodejs.org/) `== 10` 82 | 83 | ### Install this application 84 | 85 | ```bash 86 | git clone git@github.com:kjirou/tit.git 87 | cd ./tilto 88 | npm install 89 | ``` 90 | -------------------------------------------------------------------------------- /documents/overview-output.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/kjirou/tilto/cce09bd918bf7f39ab9f57518f48105376ef7d05/documents/overview-output.png -------------------------------------------------------------------------------- /examples/children.js: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env node 2 | 3 | const fs = require('fs'); 4 | const path = require('path'); 5 | 6 | let tilto; 7 | if (fs.existsSync(path.join(__dirname, '../dist/index.js'))) { 8 | tilto = require('../dist'); 9 | } else { 10 | require('../setup/ts-node-reigister-for-test'); 11 | tilto = require('../src'); 12 | } 13 | 14 | // ======== 15 | 16 | const ANSI_RED = '\u001b[31m'; 17 | const ANSI_GREEN = '\u001b[32m'; 18 | const ANSI_RESET = '\u001b[0m'; 19 | 20 | let root = tilto.createBox({width: 80, height: 20}); 21 | 22 | const sideBar = tilto.createBox({width: 20, height: 20}); 23 | sideBar.borders = tilto.createBordersByType('default'); 24 | sideBar.content = `Channels 25 | #elona 26 | #ftl 27 | ${ANSI_GREEN}#rimworld 28 | #stellaris 29 | #skyrim${ANSI_RESET} 30 | #tome4 31 | 32 | Direct Messages 33 | @slackbot 34 | @kjirou 35 | @foo 36 | @bart`; 37 | 38 | const messageListContainer = tilto.createBox({x: 20, width: 60, height: 20}); 39 | Object.assign(messageListContainer.borders, { 40 | topWidth: 1, 41 | bottomWidth: 1, 42 | rightWidth: 1, 43 | topSymbols: ['-'], 44 | bottomSymbols: ['-'], 45 | rightSymbols: ['|'], 46 | topRightSymbols: ['+'], 47 | bottomRightSymbols: ['+'], 48 | }); 49 | messageListContainer.content = ` あああああああああああああああああ！ 50 | うああああああああああ！ 51 | 52 | kjirou 1:17PM 53 | 　ああああああああああああああああああああああ！ 54 | 　ふああああああああああああああああああ！ 55 | 56 | kjirou 2:33PM 57 | 　この${ANSI_RED}一部は赤い${ANSI_RESET}です！ 58 | 　ぶるあああああああああああああ！ 59 | 60 | kjirou 3:12PM 61 | 今日も一日あああああああああああ！ 62 | はあああああああああ！ 63 | `; 64 | 65 | const messageInput = tilto.createBox({y: 15, width: 59, height: 4}); 66 | Object.assign(messageInput.borders, { 67 | topWidth: 1, 68 | topSymbols: ['-'], 69 | }); 70 | messageInput.content = '5000兆円欲しい_'; 71 | 72 | messageListContainer.children.push(messageInput); 73 | root.children.push(sideBar, messageListContainer); 74 | 75 | console.log(tilto.render(root)); 76 | -------------------------------------------------------------------------------- /examples/dummy-notepad.js: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env node 2 | 3 | const fs = require('fs'); 4 | const path = require('path'); 5 | 6 | let tilto; 7 | if (fs.existsSync(path.join(__dirname, '../dist/index.js'))) { 8 | tilto = require('../dist'); 9 | } else { 10 | require('../setup/ts-node-reigister-for-test'); 11 | tilto = require('../src'); 12 | } 13 | 14 | // ======== 15 | 16 | const logUpdate = require('log-update'); 17 | const keypress = require('keypress'); 18 | 19 | 20 | let root = tilto.createBox({width: 40, height: 20}); 21 | 22 | const statusBar = tilto.createBox({width: 40, height: 3}); 23 | statusBar.borders = tilto.createBordersByType('default'); 24 | statusBar.content = '[C]lear | [Q]uit'; 25 | 26 | let textarea = tilto.createBox({y: 3, width: 40, height: 17}); 27 | Object.assign(textarea.borders, { 28 | bottomWidth: 1, 29 | leftWidth: 1, 30 | rightWidth: 1, 31 | bottomSymbols: ['-'], 32 | leftSymbols: ['|'], 33 | rightSymbols: ['|'], 34 | bottomLeftSymbols: ['+'], 35 | bottomRightSymbols: ['+'], 36 | }); 37 | 38 | root.children.push(statusBar, textarea); 39 | 40 | 41 | keypress(process.stdin); 42 | process.stdin.setRawMode(true); 43 | 44 | process.stdin.on('keypress', (ch, key) => { 45 | if (key && key.ctrl && (key.name === 'd' || key.name === 'q')) { 46 | process.stdin.pause(); 47 | process.exit(); 48 | } else if (key && key.ctrl && key.name === 'c') { 49 | textarea.content = ''; 50 | logUpdate(tilto.render(root)); 51 | } else { 52 | let character = ch; 53 | if (key && key.name === 'return') { 54 | character = '\n'; 55 | } 56 | textarea.content += character; 57 | logUpdate(tilto.render(root)); 58 | } 59 | }); 60 | 61 | logUpdate(tilto.render(root)); 62 | -------------------------------------------------------------------------------- /examples/overview.js: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env node 2 | 3 | const fs = require('fs'); 4 | const path = require('path'); 5 | 6 | let tilto; 7 | if (fs.existsSync(path.join(__dirname, '../dist/index.js'))) { 8 | tilto = require('../dist'); 9 | } else { 10 | require('../setup/ts-node-reigister-for-test'); 11 | tilto = require('../src'); 12 | } 13 | 14 | // ======== 15 | 16 | const box = tilto.createBox({width: 20, height: 6}); 17 | 18 | box.borders = tilto.createBordersByType('default'); 19 | box.content = 'The quick brown fox jumps over the lazy dog.'; 20 | console.log(tilto.render(box)); 21 | 22 | const ansiRed = '\u001b[31m'; 23 | const ansiGreen = '\u001b[32m'; 24 | const ansiReset = '\u001b[0m'; 25 | box.content = 'It also supports マルチバイト文字, Surrogate-pairs and ' + 26 | `${ansiRed}ANSI${ansiReset} ${ansiGreen}escape${ansiReset} codes.`; 27 | console.log(tilto.render(box)); 28 | 29 | box.content = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11'].join('\n'); 30 | box.scroll = { 31 | y: 4, 32 | }; 33 | console.log(tilto.render(box)); 34 | -------------------------------------------------------------------------------- /examples/scroll.js: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env node 2 | 3 | const fs = require('fs'); 4 | const path = require('path'); 5 | 6 | let tilto; 7 | if (fs.existsSync(path.join(__dirname, '../dist/index.js'))) { 8 | tilto = require('../dist'); 9 | } else { 10 | require('../setup/ts-node-reigister-for-test'); 11 | tilto = require('../src'); 12 | } 13 | 14 | // ======== 15 | 16 | const logUpdate = require('log-update'); 17 | const keypress = require('keypress'); 18 | 19 | const createRoot = (width) => { 20 | const root = tilto.createBox({width, height: 20}); 21 | root.borders = tilto.createBordersByType('default'); 22 | const trackElement = tilto.createElementBody(' '); 23 | trackElement.style.backgroundColor = 'bgWhite'; 24 | const thumbElement = tilto.createElementBody(' '); 25 | thumbElement.style.backgroundColor = 'bgBlackBright'; 26 | root.scroll = { 27 | y: 0, 28 | thumbElement, 29 | trackElement, 30 | }; 31 | root.content = `　メロスは激怒した。必ず、かの邪智暴虐じゃちぼうぎゃくの王を除かなければならぬと決意した。メロスには政治がわからぬ。メロスは、村の牧人である。笛を吹き、羊と遊んで暮して来た。けれども邪悪に対しては、人一倍に敏感であった。きょう未明メロスは村を出発し、野を越え山越え、十里はなれた此このシラクスの市にやって来た。メロスには父も、母も無い。女房も無い。十六の、内気な妹と二人暮しだ。この妹は、村の或る律気な一牧人を、近々、花婿はなむことして迎える事になっていた。結婚式も間近かなのである。メロスは、それゆえ、花嫁の衣裳やら祝宴の御馳走やらを買いに、はるばる市にやって来たのだ。先ず、その品々を買い集め、それから都の大路をぶらぶら歩いた。メロスには竹馬の友があった。セリヌンティウスである。今は此のシラクスの市で、石工をしている。その友を、これから訪ねてみるつもりなのだ。久しく逢わなかったのだから、訪ねて行くのが楽しみである。歩いているうちにメロスは、まちの様子を怪しく思った。ひっそりしている。もう既に日も落ちて、まちの暗いのは当りまえだが、けれども、なんだか、夜のせいばかりでは無く、市全体が、やけに寂しい。のんきなメロスも、だんだん不安になって来た。路で逢った若い衆をつかまえて、何かあったのか、二年まえに此の市に来たときは、夜でも皆が歌をうたって、まちは賑やかであった筈はずだが、と質問した。若い衆は、首を振って答えなかった。しばらく歩いて老爺ろうやに逢い、こんどはもっと、語勢を強くして質問した。老爺は答えなかった。メロスは両手で老爺のからだをゆすぶって質問を重ねた。老爺は、あたりをはばかる低声で、わずか答えた。 32 | 「王様は、人を殺します。」 33 | 「なぜ殺すのだ。」 34 | 「悪心を抱いている、というのですが、誰もそんな、悪心を持っては居りませぬ。」 35 | 「たくさんの人を殺したのか。」 36 | 「はい、はじめは王様の妹婿さまを。それから、御自身のお世嗣よつぎを。それから、妹さまを。それから、妹さまの御子さまを。それから、皇后さまを。それから、賢臣のアレキス様を。」 37 | 「おどろいた。国王は乱心か。」 38 | 「いいえ、乱心ではございませぬ。人を、信ずる事が出来ぬ、というのです。このごろは、臣下の心をも、お疑いになり、少しく派手な暮しをしている者には、人質ひとりずつ差し出すことを命じて居ります。御命令を拒めば十字架にかけられて、殺されます。きょうは、六人殺されました。」 39 | 　聞いて、メロスは激怒した。「呆あきれた王だ。生かして置けぬ。」`; 40 | return root; 41 | }; 42 | let root = createRoot(40); 43 | 44 | keypress(process.stdin); 45 | process.stdin.setRawMode(true); 46 | 47 | process.stdin.on('keypress', (ch, key) => { 48 | if (key && key.ctrl && (key.name === 'd' || key.name === 'q')) { 49 | process.stdin.pause(); 50 | process.exit(); 51 | } else if (key.name === 'w') { 52 | root = createRoot(tilto.getWidth(root) + 1); 53 | logUpdate(tilto.render(root)); 54 | } else if (key.name === 's') { 55 | root = createRoot(tilto.getWidth(root) - 1); 56 | logUpdate(tilto.render(root)); 57 | } else if (key.name === 'up') { 58 | root.scroll.y = root.scroll.y - 1; 59 | logUpdate(tilto.render(root)); 60 | } else if (key.name === 'down') { 61 | root.scroll.y = root.scroll.y + 1; 62 | logUpdate(tilto.render(root)); 63 | } 64 | }); 65 | 66 | logUpdate(tilto.render(root)); 67 | -------------------------------------------------------------------------------- /package-lock.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "tilto", 3 | "version": "0.0.2", 4 | "lockfileVersion": 1, 5 | "requires": true, 6 | "dependencies": { 7 | "@types/ansi-regex": { 8 | "version": "4.0.0", 9 | "resolved": "https://registry.npmjs.org/@types/ansi-regex/-/ansi-regex-4.0.0.tgz", 10 | "integrity": "sha512-r1W316vjsZXn1/csLC4HcCJs6jIHIzksHJd7xx+Dl+PAb0S2Dh9cR8ZsIMEfGmbBtP7JNWlf2KKahSkDP6rg3g==", 11 | "dev": true 12 | }, 13 | "@types/mocha": { 14 | "version": "5.2.6", 15 | "resolved": "https://registry.npmjs.org/@types/mocha/-/mocha-5.2.6.tgz", 16 | "integrity": "sha512-1axi39YdtBI7z957vdqXI4Ac25e7YihYQtJa+Clnxg1zTJEaIRbndt71O3sP4GAMgiAm0pY26/b9BrY4MR/PMw==", 17 | "dev": true 18 | }, 19 | "@types/node": { 20 | "version": "11.12.1", 21 | "resolved": 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17 | "keywords": [ 18 | "text", 19 | "terminal", 20 | "tui", 21 | "renderer" 22 | ], 23 | "author": "kjirou", 24 | "license": "MIT", 25 | "bugs": { 26 | "url": "https://github.com/kjirou/tilto/issues" 27 | }, 28 | "homepage": "https://github.com/kjirou/tilto#readme", 29 | "dependencies": { 30 | "ansi-regex": "^4.1.0", 31 | "eastasianwidth": "^0.2.0", 32 | "slice-ansi-string": "^1.0.1", 33 | "strip-ansi": "^5.2.0" 34 | }, 35 | "devDependencies": { 36 | "@types/ansi-regex": "^4.0.0", 37 | "@types/mocha": "^5.2.6", 38 | "@types/node": "^11.12.1", 39 | "ansi-styles": "^3.2.1", 40 | "keypress": "^0.2.1", 41 | "log-update": "^3.1.0", 42 | "mocha": "^6.0.2", 43 | "ts-node": "^8.0.3", 44 | "typescript": "^3.4.1" 45 | }, 46 | "files": [ 47 | "README.md", 48 | "dist", 49 | "examples", 50 | "package.json" 51 | ], 52 | "engines": { 53 | "node": ">=8", 54 | "npm": ">=6" 55 | } 56 | } 57 | -------------------------------------------------------------------------------- /setup/ts-node-reigister-for-test.js: -------------------------------------------------------------------------------- 1 | const path = require('path'); 2 | 3 | require('ts-node').register({ 4 | files: true, 5 | project: path.join(__dirname, '../tsconfigs/test.json'), 6 | }); 7 | -------------------------------------------------------------------------------- /src/border.ts: -------------------------------------------------------------------------------- 1 | import { 2 | ElementSymbol, 3 | Matrix, 4 | getHeight, 5 | getMaxX, 6 | getMaxY, 7 | getWidth, 8 | matrixToRectangle, 9 | } from './matrix'; 10 | import { 11 | Rectangle, 12 | rectangleToSize, 13 | shrinkRectangle, 14 | } from './rectangle'; 15 | import { 16 | validateSize, 17 | } from './utils'; 18 | 19 | export type Borders = { 20 | topWidth: number, 21 | rightWidth: number, 22 | bottomWidth: number, 23 | leftWidth: number, 24 | topSymbols: (ElementSymbol | null)[], 25 | rightSymbols: (ElementSymbol | null)[], 26 | bottomSymbols: (ElementSymbol | null)[], 27 | leftSymbols: (ElementSymbol | null)[], 28 | topRightSymbols: (ElementSymbol | null)[], 29 | bottomRightSymbols: (ElementSymbol | null)[], 30 | bottomLeftSymbols: (ElementSymbol | null)[], 31 | topLeftSymbols: (ElementSymbol | null)[], 32 | }; 33 | 34 | function getByCirculatedIndex(ary: ArrayElement[], index: number): ArrayElement { 35 | const found = ary[(ary.length + index) % ary.length]; 36 | if (found === undefined) { 37 | throw new Error('Can not find an element'); 38 | } 39 | return found; 40 | }; 41 | 42 | export function clearTopSide(matrix: Matrix, width: number): Matrix { 43 | return matrix.map((row, y) => { 44 | if (y < width) { 45 | return row.map(element => Object.assign({}, element, {symbol: null})); 46 | } 47 | return row; 48 | }); 49 | }; 50 | 51 | export function clearBottomSide(matrix: Matrix, width: number): Matrix { 52 | const maxY = getMaxY(matrix); 53 | 54 | return matrix.map((row, y) => { 55 | if (y > maxY - width) { 56 | return row.map(element => Object.assign({}, element, {symbol: null})); 57 | } 58 | return row; 59 | }); 60 | }; 61 | 62 | export function clearLeftSide(matrix: Matrix, width: number): Matrix { 63 | return matrix.map(row => { 64 | const newRow = row.slice(); 65 | for (let x = 0; x < width; x += 1) { 66 | newRow[x] = Object.assign({}, newRow[x], {symbol: null}); 67 | } 68 | return newRow; 69 | }); 70 | }; 71 | 72 | export function clearRightSide(matrix: Matrix, width: number): Matrix { 73 | const maxX = getMaxX(matrix); 74 | 75 | return matrix.map(row => { 76 | const newRow = row.slice(); 77 | for (let x = maxX; x > maxX - width; x -= 1) { 78 | newRow[x] = Object.assign({}, newRow[x], {symbol: null}); 79 | } 80 | return newRow; 81 | }); 82 | }; 83 | 84 | export function drawTopSide( 85 | matrix: Matrix, 86 | borderWidth: number, 87 | symbols: (ElementSymbol | null)[], 88 | fromX: number, 89 | toX: number 90 | ): Matrix { 91 | return matrix.map((row, y) => { 92 | if (y < borderWidth) { 93 | return row.map((element, x) => { 94 | if (x >= fromX && x <= toX && symbols.length > 0) { 95 | return Object.assign({}, element, { 96 | symbol: getByCirculatedIndex(symbols, y), 97 | }); 98 | } 99 | return element; 100 | }); 101 | } 102 | return row; 103 | }); 104 | }; 105 | 106 | export function drawBottomSide( 107 | matrix: Matrix, 108 | borderWidth: number, 109 | symbols: (ElementSymbol | null)[], 110 | fromX: number, 111 | toX: number 112 | ): Matrix { 113 | const maxY = getMaxY(matrix); 114 | 115 | return matrix.map((row, y) => { 116 | if (y > maxY - borderWidth) { 117 | return row.map((element, x) => { 118 | if (x >= fromX && x <= toX && symbols.length > 0) { 119 | return Object.assign({}, element, { 120 | symbol: getByCirculatedIndex(symbols, maxY - y), 121 | }); 122 | } 123 | return element; 124 | }); 125 | } 126 | return row; 127 | }); 128 | }; 129 | 130 | export function drawLeftSide( 131 | matrix: Matrix, 132 | borderWidth: number, 133 | symbols: (ElementSymbol | null)[], 134 | fromY: number, 135 | toY: number 136 | ): Matrix { 137 | return matrix.map((row, y) => { 138 | if (y >= fromY && y <= toY) { 139 | return row.map((element, x) => { 140 | if (x < borderWidth && symbols.length > 0) { 141 | return Object.assign({}, element, { 142 | symbol: getByCirculatedIndex(symbols, x), 143 | }); 144 | } 145 | return element; 146 | }); 147 | } 148 | return row; 149 | }); 150 | }; 151 | 152 | export function drawRightSide( 153 | matrix: Matrix, 154 | borderWidth: number, 155 | symbols: (ElementSymbol | null)[], 156 | fromY: number, 157 | toY: number 158 | ): Matrix { 159 | const maxX = getMaxX(matrix); 160 | 161 | return matrix.map((row, y) => { 162 | if (y >= fromY && y <= toY) { 163 | return row.map((element, x) => { 164 | if (x > maxX - borderWidth && symbols.length > 0) { 165 | return Object.assign({}, element, { 166 | symbol: getByCirculatedIndex(symbols, maxX - x), 167 | }); 168 | } 169 | return element; 170 | }); 171 | } 172 | return row; 173 | }); 174 | }; 175 | 176 | export function drawCorner( 177 | matrix: Matrix, 178 | rectangle: Rectangle, 179 | symbols: (ElementSymbol | null)[] 180 | ): Matrix { 181 | let counter = 0; 182 | 183 | return matrix.map((row, y) => { 184 | if (y >= rectangle.y && y < rectangle.y + rectangle.height) { 185 | return row.map((element, x) => { 186 | if (x >= rectangle.x && x < rectangle.x + rectangle.width) { 187 | const newRow = Object.assign({}, element, { 188 | symbol: getByCirculatedIndex(symbols, counter), 189 | }); 190 | counter += 1; 191 | return newRow; 192 | } 193 | return element; 194 | }); 195 | } 196 | return row; 197 | }); 198 | }; 199 | 200 | function shrinkContentAreaByBorders(matrix: Matrix, borders: Borders): Rectangle { 201 | return shrinkRectangle( 202 | matrixToRectangle(matrix), 203 | { 204 | top: borders.topWidth, 205 | bottom: borders.bottomWidth, 206 | left: borders.leftWidth, 207 | right: borders.rightWidth, 208 | } 209 | ); 210 | } 211 | 212 | export function validateMatrixWithBorders(matrix: Matrix, borders: Borders): boolean { 213 | const contentArea = shrinkContentAreaByBorders(matrix, borders); 214 | return validateSize(rectangleToSize(contentArea)); 215 | } 216 | 217 | export function placeBorders(matrix: Matrix, borders: Borders): { 218 | matrix: Matrix, 219 | contentArea: Rectangle, 220 | } { 221 | if (validateMatrixWithBorders(matrix, borders) === false) { 222 | throw new Error('Borders do not fit in the matrix'); 223 | } 224 | 225 | const maxWidth = getWidth(matrix); 226 | const maxHeight = getHeight(matrix); 227 | let newMatrix = matrix; 228 | 229 | newMatrix = clearTopSide(newMatrix, borders.topWidth); 230 | newMatrix = clearBottomSide(newMatrix, borders.bottomWidth); 231 | newMatrix = clearLeftSide(newMatrix, borders.leftWidth); 232 | newMatrix = clearRightSide(newMatrix, borders.rightWidth); 233 | 234 | newMatrix = drawTopSide( 235 | newMatrix, 236 | borders.topWidth, 237 | borders.topSymbols, 238 | borders.leftWidth, 239 | maxWidth - borders.rightWidth 240 | ); 241 | newMatrix = drawBottomSide( 242 | newMatrix, 243 | borders.bottomWidth, 244 | borders.bottomSymbols, 245 | borders.leftWidth, 246 | maxWidth - borders.rightWidth 247 | ); 248 | newMatrix = drawLeftSide( 249 | newMatrix, 250 | borders.leftWidth, 251 | borders.leftSymbols, 252 | borders.topWidth, 253 | maxHeight - borders.bottomWidth 254 | ); 255 | newMatrix = drawRightSide( 256 | newMatrix, 257 | borders.rightWidth, 258 | borders.rightSymbols, 259 | borders.topWidth, 260 | maxHeight - borders.bottomWidth 261 | ); 262 | 263 | newMatrix = drawCorner( // top-left 264 | newMatrix, 265 | {x: 0, y: 0, 266 | width: borders.leftWidth, height: borders.topWidth}, 267 | borders.topLeftSymbols 268 | ); 269 | newMatrix = drawCorner( // top-right 270 | newMatrix, 271 | {x: maxWidth - borders.rightWidth, y: 0, 272 | width: borders.rightWidth, height: borders.topWidth}, 273 | borders.topRightSymbols 274 | ); 275 | newMatrix = drawCorner( // bottom-left 276 | newMatrix, 277 | {x: 0, y: maxHeight - borders.bottomWidth, 278 | width: borders.leftWidth, height: borders.bottomWidth}, 279 | borders.bottomLeftSymbols 280 | ); 281 | newMatrix = drawCorner( // bottom-right 282 | newMatrix, 283 | {x: maxWidth - borders.rightWidth, y: maxHeight - borders.bottomWidth, 284 | width: borders.rightWidth, height: borders.bottomWidth}, 285 | borders.bottomRightSymbols 286 | ); 287 | 288 | return { 289 | matrix: newMatrix, 290 | contentArea: shrinkContentAreaByBorders(matrix, borders), 291 | }; 292 | } 293 | -------------------------------------------------------------------------------- /src/box.ts: -------------------------------------------------------------------------------- 1 | import * as stripAnsi from 'strip-ansi'; 2 | 3 | import { 4 | Borders, 5 | placeBorders, 6 | validateMatrixWithBorders, 7 | } from './border'; 8 | import { 9 | Element, 10 | ElementBody, 11 | ElementSymbol, 12 | Matrix, 13 | SymbolRuler, 14 | createElementBody, 15 | createMatrix, 16 | createMatrixFromText, 17 | cropMatrix, 18 | getHeight, 19 | getWidth, 20 | matrixToRectangle, 21 | overwriteMatrix, 22 | parseContent, 23 | pourContent, 24 | renderMatrix, 25 | validateMatrix, 26 | } from './matrix'; 27 | import { 28 | Rectangle, 29 | moveRectangle, 30 | rectangleToCoordinate, 31 | rectangleToSize, 32 | } from './rectangle'; 33 | import { 34 | placeScrollBar, 35 | } from './scroll-bar'; 36 | import { 37 | Coordinate, 38 | Size, 39 | validateSize, 40 | } from './utils'; 41 | 42 | const eaw = require('eastasianwidth'); 43 | 44 | export type Box = { 45 | borders: Borders; 46 | children: Box[]; 47 | content: string, 48 | matrix: Matrix, 49 | scroll?: { 50 | thumbElement?: ElementBody, 51 | trackElement?: ElementBody, 52 | y: number, 53 | }, 54 | symbolRuler: SymbolRuler, 55 | x: number, 56 | y: number, 57 | zIndex: number, 58 | }; 59 | 60 | export function defaultSymbolRuler(symbol: ElementSymbol): 0 | 1 | 2 { 61 | const escapedSymbol = stripAnsi(symbol); 62 | return eaw.characterLength(escapedSymbol); 63 | }; 64 | 65 | function createDefaultTrackElement(): ElementBody { 66 | return createElementBody('|'); 67 | }; 68 | 69 | function createDefaultThumbElement(): ElementBody { 70 | return createElementBody('#'); 71 | }; 72 | 73 | export function createBox( 74 | rectangleLike: { 75 | x?: Rectangle['x'], 76 | y?: Rectangle['y'], 77 | width: Rectangle['width'], 78 | height: Rectangle['height'], 79 | }, 80 | options: { 81 | defaultSymbol?: ElementSymbol | null, 82 | } = {} 83 | ): Box { 84 | const settings = Object.assign({}, { 85 | defaultSymbol: null, 86 | }, options); 87 | 88 | const rectangle = Object.assign({}, {x: 0, y: 0}, rectangleLike); 89 | 90 | const matrix = createMatrix(rectangleToSize(rectangle), settings.defaultSymbol); 91 | if (!validateMatrix(matrix)) { 92 | throw new Error('The matrix size is invalid'); 93 | } 94 | 95 | return { 96 | symbolRuler: defaultSymbolRuler, 97 | x: rectangle.x, 98 | y: rectangle.y, 99 | zIndex: 0, 100 | content: '', 101 | borders: { 102 | topWidth: 0, 103 | bottomWidth: 0, 104 | leftWidth: 0, 105 | rightWidth: 0, 106 | topSymbols: [], 107 | rightSymbols: [], 108 | bottomSymbols: [], 109 | leftSymbols: [], 110 | topRightSymbols: [], 111 | bottomRightSymbols: [], 112 | bottomLeftSymbols: [], 113 | topLeftSymbols: [], 114 | }, 115 | matrix, 116 | children: [], 117 | }; 118 | } 119 | 120 | function applyBoxSettingsToMatrix(box: Box): Matrix { 121 | const pourableElements = parseContent(box.content, box.symbolRuler); 122 | 123 | type FilterArguments = { 124 | matrix: Matrix, 125 | contentArea: Rectangle, 126 | contentAreaCoordinate: Coordinate, 127 | contentAreaSize: Size, 128 | contentAreaMatrix: Matrix, 129 | }; 130 | type FilterResult = { 131 | matrix: Matrix, 132 | contentArea: Rectangle, 133 | errorOccured: boolean, 134 | }; 135 | type Filter = (args: FilterArguments) => FilterResult; 136 | 137 | const filters: Filter[] = []; 138 | 139 | // Borders 140 | filters.push( 141 | ({matrix, contentAreaMatrix, contentArea, contentAreaCoordinate}) => { 142 | if (validateMatrixWithBorders(contentAreaMatrix, box.borders) === false) { 143 | return { 144 | matrix, 145 | contentArea, 146 | errorOccured: true, 147 | }; 148 | } 149 | 150 | const placed = placeBorders(contentAreaMatrix, box.borders); 151 | 152 | return { 153 | matrix: overwriteMatrix(matrix, placed.matrix, contentAreaCoordinate, box.symbolRuler), 154 | contentArea: moveRectangle(placed.contentArea, contentAreaCoordinate), 155 | errorOccured: false, 156 | }; 157 | } 158 | ); 159 | 160 | // Scroll Bar 161 | if (box.scroll !== undefined) { 162 | const scrollSettings = box.scroll; // To avoid TypeScript's undefined check 163 | 164 | filters.push( 165 | ({matrix, contentAreaMatrix, contentArea, contentAreaCoordinate, contentAreaSize}) => { 166 | if (validateSize(contentAreaSize) === false || contentAreaSize.width < 1) { 167 | return { 168 | matrix, 169 | contentArea, 170 | errorOccured: true, 171 | }; 172 | } 173 | 174 | const placed = placeScrollBar( 175 | contentAreaMatrix, 176 | pourableElements, 177 | scrollSettings.y, 178 | scrollSettings.trackElement || createDefaultTrackElement(), 179 | scrollSettings.thumbElement || createDefaultThumbElement() 180 | ); 181 | 182 | return { 183 | matrix: overwriteMatrix(matrix, placed.matrix, contentAreaCoordinate, box.symbolRuler), 184 | contentArea: moveRectangle(placed.contentArea, contentAreaCoordinate), 185 | errorOccured: false, 186 | }; 187 | } 188 | ); 189 | } 190 | 191 | // Content 192 | if (box.content !== '') { 193 | const scrollY = box.scroll ? box.scroll.y : 0; 194 | 195 | filters.push( 196 | ({matrix, contentAreaMatrix, contentArea, contentAreaCoordinate}) => { 197 | const placedMatrix = pourContent(contentAreaMatrix, pourableElements, scrollY); 198 | 199 | return { 200 | matrix: overwriteMatrix(matrix, placedMatrix, contentAreaCoordinate, box.symbolRuler), 201 | contentArea, 202 | errorOccured: false, 203 | }; 204 | } 205 | ); 206 | } 207 | 208 | // Children 209 | if (box.children.length > 0) { 210 | filters.push( 211 | ({matrix, contentAreaMatrix, contentArea, contentAreaCoordinate}) => { 212 | box.children 213 | .slice() 214 | .sort((a, b) => a.zIndex - b.zIndex) 215 | .forEach(childBox => { 216 | const childMatrix = applyBoxSettingsToMatrix(childBox); 217 | contentAreaMatrix = overwriteMatrix( 218 | contentAreaMatrix, 219 | childMatrix, 220 | { 221 | x: childBox.x, 222 | y: childBox.y, 223 | }, 224 | box.symbolRuler 225 | ); 226 | }) 227 | ; 228 | 229 | return { 230 | matrix: overwriteMatrix(matrix, contentAreaMatrix, contentAreaCoordinate, box.symbolRuler), 231 | contentArea, 232 | errorOccured: false, 233 | }; 234 | } 235 | ); 236 | } 237 | 238 | const filterResult = filters.reduce( 239 | (preFilterResult: FilterResult, filter: Filter) => { 240 | if (preFilterResult.errorOccured) { 241 | return preFilterResult; 242 | } 243 | return filter( 244 | Object.assign({ 245 | matrix: preFilterResult.matrix, 246 | contentArea: preFilterResult.contentArea, 247 | contentAreaMatrix: cropMatrix(preFilterResult.matrix, preFilterResult.contentArea), 248 | contentAreaCoordinate: rectangleToCoordinate(preFilterResult.contentArea), 249 | contentAreaSize: rectangleToSize(preFilterResult.contentArea), 250 | }) 251 | ); 252 | }, 253 | { 254 | matrix: box.matrix, 255 | contentArea: matrixToRectangle(box.matrix), 256 | errorOccured: false, 257 | } 258 | ); 259 | 260 | return overwriteMatrix( 261 | box.matrix, 262 | filterResult.matrix, 263 | {x: 0, y: 0}, 264 | box.symbolRuler 265 | ); 266 | } 267 | 268 | export function renderBox( 269 | box: Box, 270 | options: { 271 | backgroundSymbol?: ElementSymbol, 272 | } = {} 273 | ): string { 274 | const settings = Object.assign({ 275 | backgroundSymbol: ' ', 276 | }, options); 277 | 278 | const matrix = applyBoxSettingsToMatrix(box); 279 | 280 | return renderMatrix(matrix, settings.backgroundSymbol); 281 | } 282 | -------------------------------------------------------------------------------- /src/index.ts: -------------------------------------------------------------------------------- 1 | import * as utils from './utils'; 2 | import * as borderModule from './border'; 3 | import * as boxModule from './box'; 4 | import * as matrixModule from './matrix'; 5 | import * as rectangleModule from './rectangle'; 6 | 7 | export type BorderType = 'default'; 8 | export type Borders = borderModule.Borders; 9 | export type Box = boxModule.Box; 10 | export type Coordinate = utils.Coordinate; 11 | export type ElementBody = matrixModule.ElementBody; 12 | export type Rectangle = rectangleModule.Rectangle; 13 | export type Size = utils.Size; 14 | export type SymbolRuler = matrixModule.SymbolRuler; 15 | 16 | export const createBox = boxModule.createBox; 17 | export const createElementBody = matrixModule.createElementBody; 18 | export const render = boxModule.renderBox; 19 | 20 | export function getWidth(box: Box): number { 21 | return matrixModule.getWidth(box.matrix); 22 | } 23 | 24 | export function getHeight(box: Box): number { 25 | return matrixModule.getHeight(box.matrix); 26 | } 27 | 28 | export function getMaxX(box: Box): number { 29 | return matrixModule.getMaxX(box.matrix); 30 | } 31 | 32 | export function getMaxY(box: Box): number { 33 | return matrixModule.getMaxY(box.matrix); 34 | } 35 | 36 | export function createBordersByType(borderType: BorderType): Borders { 37 | switch (borderType) { 38 | case 'default': 39 | return { 40 | topWidth: 1, 41 | bottomWidth: 1, 42 | leftWidth: 1, 43 | rightWidth: 1, 44 | topSymbols: ['-'], 45 | bottomSymbols: ['-'], 46 | leftSymbols: ['|'], 47 | rightSymbols: ['|'], 48 | topLeftSymbols: ['+'], 49 | topRightSymbols: ['+'], 50 | bottomLeftSymbols: ['+'], 51 | bottomRightSymbols: ['+'], 52 | }; 53 | } 54 | } 55 | -------------------------------------------------------------------------------- /src/matrix.ts: -------------------------------------------------------------------------------- 1 | import * as ansiRegex from 'ansi-regex'; 2 | import * as stripAnsi from 'strip-ansi'; 3 | 4 | import { 5 | Coordinate, 6 | Size, 7 | stringToArray, 8 | } from './utils'; 9 | import { 10 | Rectangle, 11 | shrinkRectangle, 12 | } from './rectangle'; 13 | 14 | const ansiStyles = require('ansi-styles'); 15 | const sliceAnsiString = require('slice-ansi-string'); 16 | 17 | export type ElementSymbol = string; 18 | export type SymbolRuler = (symbol: ElementSymbol) => 0 | 1 | 2; 19 | export type ElementStyle = { 20 | foregroundColor: string, // '' は設定なしを示す 21 | backgroundColor: string, // '' は設定なしを示す 22 | bold: boolean, 23 | dim: boolean, 24 | italic: boolean, 25 | underline: boolean, 26 | inverse: boolean, 27 | hidden: boolean, 28 | strikethrough: boolean, 29 | }; 30 | export type ElementBody = { 31 | symbol: ElementSymbol | null, 32 | style: ElementStyle, 33 | }; 34 | export type Element = { 35 | x: number, 36 | y: number, 37 | // string (=ElementSymbol) .. 1文字の文字列。制御文字を含まない。 38 | // null .. シンボルがないことを示す。一文字分の背景が表示される。 39 | // false .. マルチバイト文字が左elementに存在することを示す。レンダリング時に無視されて詰められる。 40 | symbol: ElementSymbol | null | false, 41 | style: ElementStyle, 42 | }; 43 | export type Matrix = Element[][]; 44 | export type PourableElement = { 45 | isLineBreaking: boolean, 46 | symbol: ElementSymbol, 47 | symbolWidth: number, 48 | style: ElementStyle, 49 | }; 50 | export type PouredElement = { 51 | isLineBreaking: PourableElement['isLineBreaking'], 52 | symbol: PourableElement['symbol'], 53 | symbolWidth: PourableElement['symbolWidth'], 54 | style: PourableElement['style'], 55 | x: number, 56 | y: number, 57 | }; 58 | 59 | export function createDefaultElementStyle(): ElementStyle { 60 | return { 61 | foregroundColor: '', 62 | backgroundColor: '', 63 | bold: false, 64 | dim: false, 65 | italic: false, 66 | underline: false, 67 | inverse: false, 68 | hidden: false, 69 | strikethrough: false, 70 | }; 71 | } 72 | 73 | export function createElementBody(symbol: ElementBody['symbol']): ElementBody { 74 | return { 75 | symbol, 76 | style: createDefaultElementStyle(), 77 | }; 78 | } 79 | 80 | function createElement(y: Coordinate['y'], x: Coordinate['x'], symbol: Element['symbol']): Element { 81 | return { 82 | y, 83 | x, 84 | symbol, 85 | style: createDefaultElementStyle(), 86 | }; 87 | } 88 | 89 | export function createMatrix(size: Size, defaultSymbol: ElementSymbol | null = null): Matrix { 90 | const matrix = []; 91 | for (let y = 0; y < size.height; y += 1) { 92 | const row = []; 93 | for (let x = 0; x < size.width; x += 1) { 94 | row.push(createElement(y, x, defaultSymbol)); 95 | } 96 | matrix.push(row); 97 | } 98 | return matrix; 99 | } 100 | 101 | /** 102 | * Validate that the matrix is not empty and is rectangular 103 | */ 104 | export function validateMatrix(matrix: Matrix): boolean { 105 | return ( 106 | Array.isArray(matrix) && 107 | matrix.length > 0 && 108 | Array.isArray(matrix[0]) && 109 | matrix[0].length > 0 && 110 | matrix.every(row => row.length === matrix[0].length) 111 | ); 112 | } 113 | 114 | export function getElement(matrix: Matrix, coordinate: Coordinate): Element | null { 115 | const row = matrix[coordinate.y]; 116 | if (!row) { 117 | return null; 118 | } 119 | return row[coordinate.x] || null; 120 | } 121 | 122 | /** 123 | * A function that makes it easy to create a matrix from text mainly for testing. 124 | * 125 | * @param text Text consisting only of ASCII characters. 126 | * It also needs to be rectangular. 127 | */ 128 | export function createMatrixFromText(text: string): Matrix { 129 | function parseTextToSymbols(text: string): ElementSymbol[][] { 130 | return text 131 | .replace(/\n+$/, '') 132 | .split('\n') 133 | .map(row => row.split('')); 134 | } 135 | 136 | const symbols = parseTextToSymbols(text); 137 | 138 | const matrix = createMatrix({ 139 | width: symbols[0].length, 140 | height: symbols.length, 141 | }); 142 | 143 | for (let y = 0; y < symbols.length; y += 1) { 144 | for (let x = 0; x < symbols[0].length; x += 1) { 145 | const element = getElement(matrix, {x, y}); 146 | if (element) { 147 | element.symbol = symbols[y][x]; 148 | } else { 149 | throw new Error('The `element` must exist.'); 150 | } 151 | } 152 | } 153 | 154 | return matrix; 155 | } 156 | 157 | export function getWidth(matrix: Matrix): number { 158 | if (matrix.length === 0) { 159 | return 0; 160 | } 161 | return matrix[0].length; 162 | } 163 | 164 | export function getHeight(matrix: Matrix): number { 165 | return matrix.length; 166 | } 167 | 168 | export function getMaxX(matrix: Matrix): number { 169 | return getWidth(matrix) - 1; 170 | } 171 | 172 | export function getMaxY(matrix: Matrix): number { 173 | return getHeight(matrix) - 1; 174 | } 175 | 176 | export function matrixToRectangle(matrix: Matrix): Rectangle { 177 | return { 178 | x: 0, 179 | y: 0, 180 | width: getWidth(matrix), 181 | height: getHeight(matrix), 182 | }; 183 | } 184 | 185 | // TODO: Negative coordinates 186 | export function overwriteMatrix( 187 | matrix: Matrix, 188 | replacer: Matrix, 189 | coordinate: Coordinate, 190 | symbolRuler: SymbolRuler 191 | ): Matrix { 192 | if (getWidth(replacer) === 0 || getHeight(replacer) === 0) { 193 | return matrix; 194 | } 195 | 196 | let newMatrix = matrix.map((row, y) => { 197 | return row.map((element, x) => { 198 | if ( 199 | y >= coordinate.y && y < coordinate.y + getHeight(replacer) && 200 | x >= coordinate.x && x < coordinate.x + getWidth(replacer) 201 | ) { 202 | const newElement = getElement(replacer, { 203 | y: y - coordinate.y, 204 | x: x - coordinate.x, 205 | }); 206 | if (newElement) { 207 | return newElement; 208 | } else { 209 | throw new Error('The `newElement` must exist.'); 210 | } 211 | } 212 | return element; 213 | }); 214 | }); 215 | 216 | // 217 | // Delete separated multibyte fragments in following cases. 218 | // 219 | // 1) A case that a multibyte fragment exist on the left edge of the replacer. 220 | // 221 | // (e.g.) | first x - 1 | first x | <- replacer's position 222 | // ---------+-------------+---------+ 223 | // original | "a" | "b" | 224 | // replacer | (None) | false | 225 | // current | "a" | false | 226 | // fix | "a" | null | 227 | // 228 | // 2) A case that a multibyte fragment exist on the right edge of the replacer. 229 | // 230 | // (e.g.) | last x | last.x + 1 | <- replacer's position 231 | // ---------+------------+------------+ 232 | // original | "a" | "b" | 233 | // replacer | multibyte | (None) | 234 | // current | multibyte | "b" | 235 | // fix | null | "b" | 236 | // 237 | // 3) A case that a multibyte fragment exist on the left side of the replacer. 238 | // 239 | // (e.g.) | first x - 1 | first x | <- replacer's position 240 | // ---------+-------------+---------+ 241 | // original | multibyte | false | 242 | // replacer | (None) | "a" | 243 | // current | multibyte | "a" | 244 | // fix | null | "a" | 245 | // 246 | // 4) A case that a multibyte fragment exist on the right side of the replacer. 247 | // 248 | // (e.g.) | last x | last.x + 1 | <- replacer's position 249 | // ---------+------------+------------+ 250 | // original | multibyte | false | 251 | // replacer | "a" | (None) | 252 | // current | "a" | false | 253 | // fix | "a" | null | 254 | // 255 | // Complex cases) 256 | // 257 | // (e.g.) | first x - 1 | first x | <- replacer's position 258 | // ---------+-------------+---------+ 259 | // original | multibyte | false | 260 | // replacer | (None) | false | 261 | // current | multibyte | false | 262 | // fix in 1 | multibyte | null | 263 | // fix in 3 | null | null | 264 | // 265 | // (e.g.) | last x | last.x + 1 | <- replacer's position 266 | // ---------+------------+------------+ 267 | // original | multibyte | false | 268 | // replacer | multibyte | (None) | 269 | // current | multibyte | false | 270 | // fix in 2 | null | false | 271 | // fix in 4 | null | null | 272 | // 273 | // These cases are somewhat unnatural because they eliminate multibyte characters that need not be erased. 274 | // However, these situations are edge cases because basically the `replacer` often has borders. 275 | // 276 | newMatrix = newMatrix.map((row, y) => { 277 | return row.map((element, x) => { 278 | // 1) 279 | if ( 280 | x === coordinate.x && 281 | element.symbol === false 282 | ) { 283 | return Object.assign({}, element, {symbol: null}); 284 | // 2) 285 | } else if ( 286 | x === coordinate.x + getWidth(replacer) - 1 && 287 | typeof element.symbol === 'string' && 288 | symbolRuler(element.symbol) === 2 289 | ) { 290 | return Object.assign({}, element, {symbol: null}); 291 | // 3) 292 | } else if ( 293 | x === coordinate.x - 1 && 294 | typeof element.symbol === 'string' && 295 | symbolRuler(element.symbol) === 2 296 | ) { 297 | return Object.assign({}, element, {symbol: null}); 298 | // 4) 299 | } else if ( 300 | x === coordinate.x + getWidth(replacer) && 301 | element.symbol === false 302 | ) { 303 | return Object.assign({}, element, {symbol: null}); 304 | } 305 | return element; 306 | }); 307 | }); 308 | 309 | return newMatrix; 310 | } 311 | 312 | export function cropMatrix(matrix: Matrix, rectangle: Rectangle): Matrix { 313 | const newMatrix = []; 314 | 315 | for (let y = rectangle.y; y < rectangle.y + rectangle.height; y += 1) { 316 | const row = []; 317 | for (let x = rectangle.x; x < rectangle.x + rectangle.width; x += 1) { 318 | const element = getElement(matrix, {x, y}); 319 | if (element) { 320 | row.push(element); 321 | } 322 | } 323 | if (row.length > 0) { 324 | newMatrix.push(row); 325 | } 326 | } 327 | 328 | return newMatrix; 329 | } 330 | 331 | /** 332 | * @param character A single character with or without ANSI escape codes. 333 | * It is mainly assumed to pass the return value of "slice-ansi-string". 334 | */ 335 | export function decodeAnsiStyles(character: string): Partial { 336 | const characterWithoutAnsi = stripAnsi(character); 337 | if (stringToArray(characterWithoutAnsi).length !== 1) { 338 | throw new Error('It should be used for single characters.'); 339 | } 340 | 341 | const ansiEscapeCodes = character.match(ansiRegex()) || []; 342 | const styleData: Partial = {}; 343 | 344 | // From https://github.com/chalk/ansi-styles#colors 345 | const foregroundColorNames = [ 346 | 'black', 347 | 'red', 348 | 'green', 349 | 'yellow', 350 | 'blue', 351 | 'magenta', 352 | 'cyan', 353 | 'white', 354 | // NOTE: "blackBright" will be added in the following commit. 355 | // https://github.com/chalk/ansi-styles/commit/fb5b656d9fce745881c36deb8ff800b5080d9f89 356 | 'grey', 357 | //'blackBright', 358 | 'redBright', 359 | 'greenBright', 360 | 'yellowBright', 361 | 'blueBright', 362 | 'magentaBright', 363 | 'cyanBright', 364 | 'whiteBright', 365 | ]; 366 | ansiEscapeCodes.some(code => { 367 | const foundName = foregroundColorNames.find(name => { 368 | return code === (ansiStyles.color[name] && ansiStyles.color[name].open); 369 | }); 370 | if (foundName) { 371 | styleData.foregroundColor = foundName; 372 | return true; 373 | } 374 | return false; 375 | }); 376 | 377 | // From https://github.com/chalk/ansi-styles#background-colors 378 | const backgroundColorNames = [ 379 | 'bgBlack', 380 | 'bgRed', 381 | 'bgGreen', 382 | 'bgYellow', 383 | 'bgBlue', 384 | 'bgMagenta', 385 | 'bgCyan', 386 | 'bgWhite', 387 | 'bgBlackBright', 388 | 'bgRedBright', 389 | 'bgGreenBright', 390 | 'bgYellowBright', 391 | 'bgBlueBright', 392 | 'bgMagentaBright', 393 | 'bgCyanBright', 394 | 'bgWhiteBright', 395 | ]; 396 | ansiEscapeCodes.some(code => { 397 | const foundName = backgroundColorNames.find(name => { 398 | return code === (ansiStyles.bgColor[name] && ansiStyles.bgColor[name].open); 399 | }); 400 | if (foundName) { 401 | styleData.backgroundColor = foundName; 402 | return true; 403 | } 404 | return false; 405 | }); 406 | 407 | // From) https://github.com/chalk/ansi-styles#modifiers 408 | ansiEscapeCodes.forEach(code => { 409 | if (code === ansiStyles.bold.open) { 410 | styleData.bold = true; 411 | } else if (code === ansiStyles.dim.open) { 412 | styleData.dim = true; 413 | } else if (code === ansiStyles.italic.open) { 414 | styleData.italic = true; 415 | } else if (code === ansiStyles.underline.open) { 416 | styleData.underline = true; 417 | } else if (code === ansiStyles.inverse.open) { 418 | styleData.inverse = true; 419 | } else if (code === ansiStyles.hidden.open) { 420 | styleData.hidden = true; 421 | } else if (code === ansiStyles.strikethrough.open) { 422 | styleData.strikethrough = true; 423 | } 424 | }); 425 | 426 | return styleData; 427 | } 428 | 429 | export function parseContent(content: string, symbolRuler: SymbolRuler): PourableElement[] { 430 | const pourableElements = []; 431 | 432 | // This pointer is considering ANSI escape code. 433 | // Therefore, it can not be used with `str.slice()` and so on. 434 | let pointer = 0; 435 | 436 | while (true) { 437 | const symbolWithAnsi = sliceAnsiString(content, pointer, pointer + 1) as ElementSymbol; 438 | if (symbolWithAnsi === '') { 439 | break; 440 | } 441 | 442 | const symbol = stripAnsi(symbolWithAnsi) as string; 443 | const symbolWidth = symbolRuler(symbol); 444 | if (symbol === '\n') { 445 | pourableElements.push({ 446 | isLineBreaking: true, 447 | symbol: '', // Anything is fine 448 | symbolWidth, 449 | style: createDefaultElementStyle(), // Anything is fine 450 | }); 451 | } else { 452 | pourableElements.push({ 453 | isLineBreaking: false, 454 | symbol: symbol, 455 | symbolWidth, 456 | style: Object.assign( 457 | createDefaultElementStyle(), 458 | decodeAnsiStyles(symbolWithAnsi) 459 | ), 460 | }); 461 | } 462 | 463 | pointer += 1; 464 | } 465 | 466 | return pourableElements; 467 | } 468 | 469 | /** 470 | * Try to pour elements to a certain width 471 | */ 472 | export function pourElementsVirtually( 473 | pourableElements: PourableElement[], 474 | matrixWidth: number 475 | ): { 476 | pouredElements: PouredElement[], 477 | contentHeight: number, 478 | } { 479 | const newPourableElements: PouredElement[] = []; 480 | 481 | let isFinished = false; 482 | let yPointer = 0; 483 | let xPointer = 0; 484 | 485 | pourableElements.forEach(pourableElement => { 486 | if (isFinished) { 487 | return; 488 | } 489 | 490 | if (pourableElement.isLineBreaking) { 491 | yPointer += 1; 492 | xPointer = 0; 493 | } else if (pourableElement.symbolWidth === 2 && matrixWidth === 1) { 494 | // The content can not pour anymore. 495 | isFinished = true; 496 | } else { 497 | if (pourableElement.symbolWidth === 2) { 498 | if ( 499 | // |abcd|P => |abcd| 500 | // |....| |P...| 501 | // (P = pointer) 502 | xPointer === matrixWidth || 503 | // |abcP| => |abcd| 504 | // |....| |P...| 505 | // (P = pointer) 506 | xPointer + 1 === matrixWidth 507 | ) { 508 | yPointer += 1; 509 | xPointer = 0; 510 | } 511 | 512 | newPourableElements.push( 513 | Object.assign({}, pourableElement, { 514 | x: xPointer, 515 | y: yPointer, 516 | }) 517 | ); 518 | 519 | xPointer += 1 520 | 521 | newPourableElements.push( 522 | Object.assign({}, pourableElement, { 523 | symbol: false, 524 | x: xPointer, 525 | y: yPointer, 526 | }) 527 | ); 528 | 529 | xPointer += 1 530 | } else if (pourableElement.symbolWidth === 1) { 531 | if (xPointer === matrixWidth) { 532 | yPointer += 1; 533 | xPointer = 0; 534 | } 535 | 536 | newPourableElements.push( 537 | Object.assign({}, pourableElement, { 538 | x: xPointer, 539 | y: yPointer, 540 | }) 541 | ); 542 | 543 | xPointer += 1; 544 | } 545 | } 546 | }); 547 | 548 | return { 549 | pouredElements: newPourableElements, 550 | // No content is regarded as zero height. 551 | contentHeight: (yPointer === 0 && xPointer === 0) ? 0 : yPointer + 1, 552 | }; 553 | } 554 | 555 | export function pourContent( 556 | matrix: Matrix, 557 | pourableElements: PourableElement[], 558 | startingY: number 559 | ): Matrix { 560 | const width = getWidth(matrix); 561 | const height = getHeight(matrix); 562 | const maxY = getMaxY(matrix); 563 | 564 | // Reset the matrix to background only. 565 | const newMatrix = createMatrix({width, height}, null); 566 | 567 | const {pouredElements} = pourElementsVirtually(pourableElements, width); 568 | 569 | pouredElements.forEach(pouredElement => { 570 | const y = pouredElement.y - startingY; 571 | 572 | if (y < 0 || y > maxY) { 573 | return; 574 | } 575 | 576 | Object.assign(newMatrix[y][pouredElement.x], { 577 | symbol: pouredElement.symbol, 578 | style: pouredElement.style, 579 | }); 580 | }); 581 | 582 | return newMatrix; 583 | } 584 | 585 | function renderElement(element: Element): string { 586 | const {symbol, style} = element; 587 | 588 | const modifiers = []; 589 | if (style.foregroundColor) { 590 | modifiers.push(ansiStyles.color[style.foregroundColor].open); 591 | } 592 | if (style.backgroundColor) { 593 | modifiers.push(ansiStyles.bgColor[style.backgroundColor].open); 594 | } 595 | if (style.bold) { 596 | modifiers.push(ansiStyles.bold.open); 597 | } 598 | if (style.dim) { 599 | modifiers.push(ansiStyles.dim.open); 600 | } 601 | if (style.italic) { 602 | modifiers.push(ansiStyles.italic.open); 603 | } 604 | if (style.underline) { 605 | modifiers.push(ansiStyles.underline.open); 606 | } 607 | if (style.inverse) { 608 | modifiers.push(ansiStyles.inverse.open); 609 | } 610 | if (style.hidden) { 611 | modifiers.push(ansiStyles.hidden.open); 612 | } 613 | if (style.strikethrough) { 614 | modifiers.push(ansiStyles.strikethrough.open); 615 | } 616 | 617 | return modifiers.join('') + symbol + (modifiers.length > 0 ? ansiStyles.reset.close : ''); 618 | } 619 | 620 | export function renderMatrix(matrix: Matrix, backgroundSymbol: ElementSymbol): string { 621 | return matrix 622 | .map(row => { 623 | return row.map(element => { 624 | if (element.symbol === false) { 625 | return ''; 626 | } else if (element.symbol === null) { 627 | return backgroundSymbol; 628 | } 629 | return renderElement(element); 630 | }).join(''); 631 | }) 632 | .join('\n'); 633 | }; 634 | -------------------------------------------------------------------------------- /src/rectangle.ts: -------------------------------------------------------------------------------- 1 | import { 2 | Coordinate, 3 | Size, 4 | } from './utils'; 5 | 6 | export type Rectangle = { 7 | x: Coordinate['x'], 8 | y: Coordinate['y'], 9 | width: Size['width'], 10 | height: Size['height'], 11 | } 12 | 13 | export function rectangleToCoordinate(rectangle: Rectangle): Coordinate { 14 | return { 15 | x: rectangle.x, 16 | y: rectangle.y, 17 | }; 18 | } 19 | 20 | export function rectangleToSize(rectangle: Rectangle): Size { 21 | return { 22 | width: rectangle.width, 23 | height: rectangle.height, 24 | }; 25 | } 26 | 27 | export function moveRectangle(rectangle: Rectangle, coordinate: Coordinate) { 28 | return Object.assign({}, rectangle, { 29 | y: rectangle.y + coordinate.y, 30 | x: rectangle.x + coordinate.x, 31 | }); 32 | } 33 | 34 | /** 35 | * Shrink a rectangle with margins 36 | */ 37 | export function shrinkRectangle( 38 | rectangle: Rectangle, 39 | margins: {top?: number, bottom?: number, left?: number, right?: number} = {} 40 | ): Rectangle { 41 | const { 42 | top, bottom, left, right 43 | } = Object.assign({}, { 44 | top: 0, 45 | bottom: 0, 46 | left: 0, 47 | right: 0, 48 | }, margins); 49 | 50 | if (top < 0 || bottom < 0 || left < 0 || right < 0) { 51 | throw new Error('Can not receive negative margins'); 52 | } 53 | 54 | const y = rectangle.y + top; 55 | const height = rectangle.height - top - bottom; 56 | const x = rectangle.x + left; 57 | const width = rectangle.width - left - right; 58 | 59 | return {x, y, width, height}; 60 | } 61 | -------------------------------------------------------------------------------- /src/scroll-bar.ts: -------------------------------------------------------------------------------- 1 | import { 2 | ElementBody, 3 | Matrix, 4 | PourableElement, 5 | SymbolRuler, 6 | matrixToRectangle, 7 | pourElementsVirtually, 8 | } from './matrix'; 9 | import { 10 | Rectangle, 11 | rectangleToSize, 12 | shrinkRectangle, 13 | } from './rectangle'; 14 | import { 15 | validateSize, 16 | } from './utils'; 17 | 18 | export function placeScrollBar( 19 | matrix: Matrix, 20 | pourableElements: PourableElement[], 21 | contentAreaScrollY: number, 22 | trackElementBody: ElementBody, 23 | thumbElementBody: ElementBody 24 | ): { 25 | matrix: Matrix, 26 | contentArea: Rectangle, 27 | } { 28 | const nextContentArea = shrinkRectangle(matrixToRectangle(matrix), {right: 1}); 29 | if (!validateSize(rectangleToSize(nextContentArea))) { 30 | throw new Error('The matrix\'s width must be 1 or more.'); 31 | } 32 | const matrixHeight = nextContentArea.height; 33 | const {contentHeight} = pourElementsVirtually(pourableElements, nextContentArea.width); 34 | 35 | let scrollBarHeight = matrixHeight; 36 | let scrollBarY = 0; 37 | if (contentHeight > 0) { 38 | scrollBarHeight = Math.ceil(Math.min(matrixHeight / contentHeight, 1.0) * matrixHeight) 39 | const scrollBarMaxY = matrixHeight - scrollBarHeight; 40 | const scrollableContentHeight = Math.max(contentHeight - matrixHeight, 0); 41 | if (scrollableContentHeight > 0) { 42 | // 43 | // NOTE: 44 | // 45 | // コンテンツ部分のスクロール可能な行数に対しての、現スクロール行数の比率で、 46 | // スクロールバーの現在位置を決めるロジック。 47 | // 48 | // 例えば、matrixHeight が 2 の場合に、スクロールしてない場合は、この位置になり、 49 | // ==== 50 | // abc # 51 | // def | 52 | // hij 53 | // kml 54 | // ==== 55 | // 56 | // 最後までスクロールしている場合は、この位置になる。 57 | // ==== 58 | // abc 59 | // def 60 | // hij | 61 | // kml # 62 | // ==== 63 | // 64 | // ただし、この位置になった場合にどちらに倒れるかというのは、常に自然に見せるのは CLI の都合上難しく、 65 | // ある程度は諦める必要がある。 66 | // ==== 67 | // abc 68 | // def | 69 | // hij | 70 | // kml 71 | // ==== 72 | // 73 | // 現在は、こうなる。 74 | // ==== 75 | // abc 76 | // def # 77 | // hij | 78 | // kml 79 | // ==== 80 | // 81 | scrollBarY = Math.floor( 82 | // 83 | // NOTE: 84 | // 85 | // scrollBarY に +1 しているのは、行自体が 1 文字分の太さを持つため。 86 | // 例えば、以下の状況だと、scrollBarMaxY は 2 だが、スクロールバーの可動域は 3 行分ある。 87 | // ==== 88 | // # 89 | // | 90 | // | 91 | // ==== 92 | // 93 | // ただし、そのせいか最終行までコンテンツをスクロールされたときに、scrollBarMaxY をオーバーフローする。 94 | // そのため最後に、Math.min() で調整している。 95 | // 96 | // この辺、なぜこういう不整合が出るのかは正しく理解してなく、テストで抑える方に倒している。 97 | // 98 | Math.min(contentAreaScrollY / scrollableContentHeight, 1.0) * (scrollBarMaxY + 1) 99 | ); 100 | scrollBarY = Math.min(scrollBarY, scrollBarMaxY); 101 | } 102 | } 103 | 104 | const newMatrix = matrix.map((row, rowIndex) => { 105 | const rightEdgeIndex = row.length - 1; 106 | const rightEdgeElement = row[rightEdgeIndex]; 107 | const copied = row.slice(); 108 | 109 | const elementBody = rowIndex >= scrollBarY && rowIndex < scrollBarY + scrollBarHeight 110 | ? thumbElementBody 111 | : trackElementBody; 112 | copied[rightEdgeIndex] = Object.assign({}, rightEdgeElement, elementBody); 113 | 114 | return copied; 115 | }); 116 | 117 | return { 118 | matrix: newMatrix, 119 | contentArea: nextContentArea, 120 | }; 121 | } 122 | -------------------------------------------------------------------------------- /src/typings/global.d.ts: -------------------------------------------------------------------------------- 1 | declare module 'strip-ansi' { 2 | function defaultExport(str: string): string; 3 | namespace defaultExport {} 4 | export = defaultExport; 5 | } 6 | -------------------------------------------------------------------------------- /src/utils.ts: -------------------------------------------------------------------------------- 1 | /* 2 | * This file MUST NOT depend on any file in the project. 3 | */ 4 | 5 | // Only integers. Negative values are also valid. 6 | export type Coordinate = { 7 | x: number, 8 | y: number, 9 | }; 10 | 11 | // Only ingegers. Negative values can be included but are invalid. 12 | export type Size = { 13 | width: number, 14 | height: number, 15 | }; 16 | 17 | export function validateSize(size: Size): boolean { 18 | return size.width >= 0 && 19 | size.height >= 0 && 20 | size.width === Math.floor(size.width) && 21 | size.height === Math.floor(size.height); 22 | } 23 | 24 | /** 25 | * Split a string considering surrogate-pairs. 26 | */ 27 | export function stringToArray(str: string): string[] { 28 | return str.match(/[\uD800-\uDBFF][\uDC00-\uDFFF]|[^\uD800-\uDFFF]/g) || []; 29 | } 30 | -------------------------------------------------------------------------------- /test/border.ts: -------------------------------------------------------------------------------- 1 | import * as assert from 'assert'; 2 | 3 | import { 4 | clearBottomSide, 5 | clearLeftSide, 6 | clearRightSide, 7 | clearTopSide, 8 | drawBottomSide, 9 | drawCorner, 10 | drawLeftSide, 11 | drawRightSide, 12 | drawTopSide, 13 | } from '../src/border'; 14 | import { 15 | createBox, 16 | renderBox, 17 | } from '../src/box'; 18 | 19 | 20 | describe('border', function() { 21 | describe('clearTopSide', function() { 22 | it('works', function() { 23 | let box1 = createBox({x: 0, y: 0, width: 3, height: 4}, {defaultSymbol: 'x'}); 24 | box1.matrix = clearTopSide(box1.matrix, 1); 25 | assert.strictEqual(renderBox(box1, {backgroundSymbol: 'N'}), [ 26 | 'NNN', 27 | 'xxx', 28 | 'xxx', 29 | 'xxx', 30 | ].join('\n')); 31 | 32 | let box2 = createBox({x: 0, y: 0, width: 3, height: 4}, {defaultSymbol: 'x'}); 33 | box2.matrix = clearTopSide(box2.matrix, 2); 34 | assert.strictEqual(renderBox(box2, {backgroundSymbol: 'N'}), [ 35 | 'NNN', 36 | 'NNN', 37 | 'xxx', 38 | 'xxx', 39 | ].join('\n')); 40 | }); 41 | 42 | it('should not break original box', function() { 43 | const box = createBox({x: 0, y: 0, width: 3, height: 4}, {defaultSymbol: 'x'}); 44 | const newBox = Object.assign({}, box, { 45 | matrix: clearTopSide(box.matrix, 1), 46 | }); 47 | 48 | assert.strictEqual(renderBox(box, {backgroundSymbol: 'N'}), [ 49 | 'xxx', 50 | 'xxx', 51 | 'xxx', 52 | 'xxx', 53 | ].join('\n')); 54 | assert.strictEqual(renderBox(newBox, {backgroundSymbol: 'N'}), [ 55 | 'NNN', 56 | 'xxx', 57 | 'xxx', 58 | 'xxx', 59 | ].join('\n')); 60 | }); 61 | }); 62 | 63 | describe('clearBottomSide', function() { 64 | it('works', function() { 65 | let box1 = createBox({x: 0, y: 0, width: 3, height: 4}, {defaultSymbol: 'x'}); 66 | box1.matrix = clearBottomSide(box1.matrix, 1); 67 | assert.strictEqual(renderBox(box1, {backgroundSymbol: 'N'}), [ 68 | 'xxx', 69 | 'xxx', 70 | 'xxx', 71 | 'NNN', 72 | ].join('\n')); 73 | 74 | let box2 = createBox({x: 0, y: 0, width: 3, height: 4}, {defaultSymbol: 'x'}); 75 | box2.matrix = clearBottomSide(box2.matrix, 2); 76 | assert.strictEqual(renderBox(box2, {backgroundSymbol: 'N'}), [ 77 | 'xxx', 78 | 'xxx', 79 | 'NNN', 80 | 'NNN', 81 | ].join('\n')); 82 | }); 83 | 84 | it('should not break original box', function() { 85 | const box = createBox({x: 0, y: 0, width: 3, height: 4}, {defaultSymbol: 'x'}); 86 | const newBox = Object.assign({}, box, { 87 | matrix: clearBottomSide(box.matrix, 1), 88 | }); 89 | 90 | assert.strictEqual(renderBox(box, {backgroundSymbol: 'N'}), [ 91 | 'xxx', 92 | 'xxx', 93 | 'xxx', 94 | 'xxx', 95 | ].join('\n')); 96 | assert.strictEqual(renderBox(newBox, {backgroundSymbol: 'N'}), [ 97 | 'xxx', 98 | 'xxx', 99 | 'xxx', 100 | 'NNN', 101 | ].join('\n')); 102 | }); 103 | }); 104 | 105 | describe('clearLeftSide', function() { 106 | it('works', function() { 107 | let box1 = createBox({x: 0, y: 0, width: 3, height: 4}, {defaultSymbol: 'x'}); 108 | box1.matrix = clearLeftSide(box1.matrix, 1); 109 | assert.strictEqual(renderBox(box1, {backgroundSymbol: 'N'}), [ 110 | 'Nxx', 111 | 'Nxx', 112 | 'Nxx', 113 | 'Nxx', 114 | ].join('\n')); 115 | 116 | let box2 = createBox({x: 0, y: 0, width: 3, height: 4}, {defaultSymbol: 'x'}); 117 | box2.matrix = clearLeftSide(box2.matrix, 2); 118 | assert.strictEqual(renderBox(box2, {backgroundSymbol: 'N'}), [ 119 | 'NNx', 120 | 'NNx', 121 | 'NNx', 122 | 'NNx', 123 | ].join('\n')); 124 | }); 125 | 126 | it('should not break original box', function() { 127 | const box = createBox({x: 0, y: 0, width: 3, height: 4}, {defaultSymbol: 'x'}); 128 | const newBox = Object.assign({}, box, { 129 | matrix: clearLeftSide(box.matrix, 1), 130 | }); 131 | 132 | assert.strictEqual(renderBox(box, {backgroundSymbol: 'N'}), [ 133 | 'xxx', 134 | 'xxx', 135 | 'xxx', 136 | 'xxx', 137 | ].join('\n')); 138 | assert.strictEqual(renderBox(newBox, {backgroundSymbol: 'N'}), [ 139 | 'Nxx', 140 | 'Nxx', 141 | 'Nxx', 142 | 'Nxx', 143 | ].join('\n')); 144 | }); 145 | }); 146 | 147 | describe('clearRightSide', function() { 148 | it('works', function() { 149 | let box1 = createBox({x: 0, y: 0, width: 3, height: 4}, {defaultSymbol: 'x'}); 150 | box1.matrix = clearRightSide(box1.matrix, 1); 151 | assert.strictEqual(renderBox(box1, {backgroundSymbol: 'N'}), [ 152 | 'xxN', 153 | 'xxN', 154 | 'xxN', 155 | 'xxN', 156 | ].join('\n')); 157 | 158 | let box2 = createBox({x: 0, y: 0, width: 3, height: 4}, {defaultSymbol: 'x'}); 159 | box2.matrix = clearRightSide(box2.matrix, 2); 160 | assert.strictEqual(renderBox(box2, {backgroundSymbol: 'N'}), [ 161 | 'xNN', 162 | 'xNN', 163 | 'xNN', 164 | 'xNN', 165 | ].join('\n')); 166 | }); 167 | 168 | it('should not break original box', function() { 169 | const box = createBox({x: 0, y: 0, width: 3, height: 4}, {defaultSymbol: 'x'}); 170 | const newBox = Object.assign({}, box, { 171 | matrix: clearRightSide(box.matrix, 1), 172 | }); 173 | 174 | assert.strictEqual(renderBox(box, {backgroundSymbol: 'N'}), [ 175 | 'xxx', 176 | 'xxx', 177 | 'xxx', 178 | 'xxx', 179 | ].join('\n')); 180 | assert.strictEqual(renderBox(newBox, {backgroundSymbol: 'N'}), [ 181 | 'xxN', 182 | 'xxN', 183 | 'xxN', 184 | 'xxN', 185 | ].join('\n')); 186 | }); 187 | }); 188 | 189 | describe('drawTopSide', function() { 190 | it('can draw a border of 1 width', function() { 191 | let box = createBox({x: 0, y: 0, width: 3, height: 4}, {defaultSymbol: 'x'}); 192 | box.matrix = drawTopSide(box.matrix, 1, ['B'], 0, 2); 193 | assert.strictEqual(renderBox(box), [ 194 | 'BBB', 195 | 'xxx', 196 | 'xxx', 197 | 'xxx', 198 | ].join('\n')); 199 | }); 200 | 201 | it('can draw a border of 2 width', function() { 202 | let box = createBox({x: 0, y: 0, width: 3, height: 4}, {defaultSymbol: 'x'}); 203 | box.matrix = drawTopSide(box.matrix, 2, ['1', '2'], 0, 2); 204 | assert.strictEqual(renderBox(box), [ 205 | '111', 206 | '222', 207 | 'xxx', 208 | 'xxx', 209 | ].join('\n')); 210 | }); 211 | 212 | it('can draw a border in the narrow x range', function() { 213 | let box = createBox({x: 0, y: 0, width: 4, height: 2}, {defaultSymbol: 'x'}); 214 | box.matrix = drawTopSide(box.matrix, 1, ['B'], 1, 2); 215 | assert.strictEqual(renderBox(box), [ 216 | 'xBBx', 217 | 'xxxx', 218 | ].join('\n')); 219 | }); 220 | 221 | it('should circulate short symbols', function() { 222 | let box = createBox({x: 0, y: 0, width: 3, height: 4}, {defaultSymbol: 'x'}); 223 | box.matrix = drawTopSide(box.matrix, 3, ['1', '2'], 0, 2); 224 | assert.strictEqual(renderBox(box), [ 225 | '111', 226 | '222', 227 | '111', 228 | 'xxx', 229 | ].join('\n')); 230 | }); 231 | 232 | it('should not break original box', function() { 233 | const box = createBox({x: 0, y: 0, width: 3, height: 4}, {defaultSymbol: 'x'}); 234 | const newBox = Object.assign({}, box, { 235 | matrix: drawTopSide(box.matrix, 1, ['B'], 0, 2), 236 | }); 237 | 238 | assert.strictEqual(renderBox(box), [ 239 | 'xxx', 240 | 'xxx', 241 | 'xxx', 242 | 'xxx', 243 | ].join('\n')); 244 | assert.strictEqual(renderBox(newBox), [ 245 | 'BBB', 246 | 'xxx', 247 | 'xxx', 248 | 'xxx', 249 | ].join('\n')); 250 | }); 251 | }); 252 | 253 | describe('drawBottomSide', function() { 254 | it('can draw a border of 1 width', function() { 255 | let box = createBox({x: 0, y: 0, width: 3, height: 4}, {defaultSymbol: 'x'}); 256 | box.matrix = drawBottomSide(box.matrix, 1, ['B'], 0, 2); 257 | assert.strictEqual(renderBox(box), [ 258 | 'xxx', 259 | 'xxx', 260 | 'xxx', 261 | 'BBB', 262 | ].join('\n')); 263 | }); 264 | 265 | it('can draw a border of 2 width', function() { 266 | let box = createBox({x: 0, y: 0, width: 3, height: 4}, {defaultSymbol: 'x'}); 267 | box.matrix = drawBottomSide(box.matrix, 2, ['1', '2'], 0, 2); 268 | assert.strictEqual(renderBox(box), [ 269 | 'xxx', 270 | 'xxx', 271 | '222', 272 | '111', 273 | ].join('\n')); 274 | }); 275 | 276 | it('can draw a border in the narrow x range', function() { 277 | let box = createBox({x: 0, y: 0, width: 4, height: 2}, {defaultSymbol: 'x'}); 278 | box.matrix = drawBottomSide(box.matrix, 1, ['B'], 1, 2); 279 | assert.strictEqual(renderBox(box), [ 280 | 'xxxx', 281 | 'xBBx', 282 | ].join('\n')); 283 | }); 284 | 285 | it('should circulate short symbols', function() { 286 | let box = createBox({x: 0, y: 0, width: 3, height: 4}, {defaultSymbol: 'x'}); 287 | box.matrix = drawBottomSide(box.matrix, 3, ['1', '2'], 0, 2); 288 | assert.strictEqual(renderBox(box), [ 289 | 'xxx', 290 | '111', 291 | '222', 292 | '111', 293 | ].join('\n')); 294 | }); 295 | 296 | it('should not break original box', function() { 297 | const box = createBox({x: 0, y: 0, width: 3, height: 4}, {defaultSymbol: 'x'}); 298 | const newBox = Object.assign({}, box, { 299 | matrix: drawBottomSide(box.matrix, 1, ['B'], 0, 2), 300 | }); 301 | 302 | assert.strictEqual(renderBox(box), [ 303 | 'xxx', 304 | 'xxx', 305 | 'xxx', 306 | 'xxx', 307 | ].join('\n')); 308 | assert.strictEqual(renderBox(newBox), [ 309 | 'xxx', 310 | 'xxx', 311 | 'xxx', 312 | 'BBB', 313 | ].join('\n')); 314 | }); 315 | }); 316 | 317 | describe('drawLeftSide', function() { 318 | it('can draw a border of 1 width', function() { 319 | let box = createBox({x: 0, y: 0, width: 4, height: 3}, {defaultSymbol: 'x'}); 320 | box.matrix = drawLeftSide(box.matrix, 1, ['B'], 0, 2); 321 | assert.strictEqual(renderBox(box), [ 322 | 'Bxxx', 323 | 'Bxxx', 324 | 'Bxxx', 325 | ].join('\n')); 326 | }); 327 | 328 | it('can draw a border of 2 width', function() { 329 | let box = createBox({x: 0, y: 0, width: 4, height: 3}, {defaultSymbol: 'x'}); 330 | box.matrix = drawLeftSide(box.matrix, 2, ['B'], 0, 2); 331 | assert.strictEqual(renderBox(box), [ 332 | 'BBxx', 333 | 'BBxx', 334 | 'BBxx', 335 | ].join('\n')); 336 | }); 337 | 338 | it('can draw a border in the narrow y range', function() { 339 | let box = createBox({x: 0, y: 0, width: 2, height: 4}, {defaultSymbol: 'x'}); 340 | box.matrix = drawLeftSide(box.matrix, 1, ['B'], 1, 2); 341 | assert.strictEqual(renderBox(box), [ 342 | 'xx', 343 | 'Bx', 344 | 'Bx', 345 | 'xx', 346 | ].join('\n')); 347 | }); 348 | 349 | it('should circulate short symbols', function() { 350 | let box = createBox({x: 0, y: 0, width: 4, height: 3}, {defaultSymbol: 'x'}); 351 | box.matrix = drawLeftSide(box.matrix, 3, ['1', '2'], 0, 2); 352 | assert.strictEqual(renderBox(box), [ 353 | '121x', 354 | '121x', 355 | '121x', 356 | ].join('\n')); 357 | }); 358 | 359 | it('should not break original box', function() { 360 | const box = createBox({x: 0, y: 0, width: 4, height: 3}, {defaultSymbol: 'x'}); 361 | const newBox = Object.assign({}, box, { 362 | matrix: drawLeftSide(box.matrix, 1, ['B'], 0, 2), 363 | }); 364 | 365 | assert.strictEqual(renderBox(box), [ 366 | 'xxxx', 367 | 'xxxx', 368 | 'xxxx', 369 | ].join('\n')); 370 | assert.strictEqual(renderBox(newBox), [ 371 | 'Bxxx', 372 | 'Bxxx', 373 | 'Bxxx', 374 | ].join('\n')); 375 | }); 376 | }); 377 | 378 | describe('drawRightSide', function() { 379 | it('can draw a border of 1 width', function() { 380 | let box = createBox({x: 0, y: 0, width: 4, height: 3}, {defaultSymbol: 'x'}); 381 | box.matrix = drawRightSide(box.matrix, 1, ['B'], 0, 2); 382 | assert.strictEqual(renderBox(box), [ 383 | 'xxxB', 384 | 'xxxB', 385 | 'xxxB', 386 | ].join('\n')); 387 | }); 388 | 389 | it('can draw a border of 2 width', function() { 390 | let box = createBox({x: 0, y: 0, width: 4, height: 3}, {defaultSymbol: 'x'}); 391 | box.matrix = drawRightSide(box.matrix, 2, ['B'], 0, 2); 392 | assert.strictEqual(renderBox(box), [ 393 | 'xxBB', 394 | 'xxBB', 395 | 'xxBB', 396 | ].join('\n')); 397 | }); 398 | 399 | it('can draw a border in the narrow y range', function() { 400 | let box = createBox({x: 0, y: 0, width: 2, height: 4}, {defaultSymbol: 'x'}); 401 | box.matrix = drawRightSide(box.matrix, 1, ['B'], 1, 2); 402 | assert.strictEqual(renderBox(box), [ 403 | 'xx', 404 | 'xB', 405 | 'xB', 406 | 'xx', 407 | ].join('\n')); 408 | }); 409 | 410 | it('should circulate short symbols', function() { 411 | let box = createBox({x: 0, y: 0, width: 4, height: 3}, {defaultSymbol: 'x'}); 412 | box.matrix = drawRightSide(box.matrix, 3, ['1', '2'], 0, 2); 413 | assert.strictEqual(renderBox(box), [ 414 | 'x121', 415 | 'x121', 416 | 'x121', 417 | ].join('\n')); 418 | }); 419 | 420 | it('should not break original box', function() { 421 | const box = createBox({x: 0, y: 0, width: 4, height: 3}, {defaultSymbol: 'x'}); 422 | const newBox = Object.assign({}, box, { 423 | matrix: drawRightSide(box.matrix, 1, ['B'], 0, 2), 424 | }); 425 | 426 | assert.strictEqual(renderBox(box), [ 427 | 'xxxx', 428 | 'xxxx', 429 | 'xxxx', 430 | ].join('\n')); 431 | assert.strictEqual(renderBox(newBox), [ 432 | 'xxxB', 433 | 'xxxB', 434 | 'xxxB', 435 | ].join('\n')); 436 | }); 437 | }); 438 | 439 | describe('drawCorner', function() { 440 | it('can draw a cornar with a single symbol', function() { 441 | let box1 = createBox({x: 0, y: 0, width: 4, height: 3}, {defaultSymbol: 'x'}); 442 | box1.matrix = drawCorner(box1.matrix, {x: 0, y: 0, width: 3, height: 2}, ['1']); 443 | assert.strictEqual(renderBox(box1), [ 444 | '111x', 445 | '111x', 446 | 'xxxx', 447 | ].join('\n')); 448 | 449 | let box2 = createBox({x: 0, y: 0, width: 4, height: 3}, {defaultSymbol: 'x'}); 450 | box2.matrix = drawCorner(box2.matrix, {x: 1, y: 1, width: 3, height: 2}, ['1']); 451 | assert.strictEqual(renderBox(box2), [ 452 | 'xxxx', 453 | 'x111', 454 | 'x111', 455 | ].join('\n')); 456 | }); 457 | 458 | it('can draw a cornar with multiple symbols', function() { 459 | let box = createBox({x: 0, y: 0, width: 4, height: 3}, {defaultSymbol: 'x'}); 460 | box.matrix = drawCorner(box.matrix, {x: 0, y: 0, width: 3, height: 2}, ['1', '2', '3', '4']); 461 | assert.strictEqual(renderBox(box), [ 462 | '123x', 463 | '412x', 464 | 'xxxx', 465 | ].join('\n')); 466 | }); 467 | 468 | it('should not break original box', function() { 469 | const box = createBox({x: 0, y: 0, width: 4, height: 3}, {defaultSymbol: 'x'}); 470 | const newBox = Object.assign({}, box, { 471 | matrix: drawCorner(box.matrix, {x: 0, y: 0, width: 1, height: 1}, ['1']), 472 | }); 473 | 474 | assert.strictEqual(renderBox(box), [ 475 | 'xxxx', 476 | 'xxxx', 477 | 'xxxx', 478 | ].join('\n')); 479 | assert.strictEqual(renderBox(newBox), [ 480 | '1xxx', 481 | 'xxxx', 482 | 'xxxx', 483 | ].join('\n')); 484 | }); 485 | }); 486 | }); 487 | -------------------------------------------------------------------------------- /test/box.ts: -------------------------------------------------------------------------------- 1 | import * as assert from 'assert'; 2 | 3 | import { 4 | Box, 5 | createBox, 6 | defaultSymbolRuler, 7 | renderBox, 8 | } from '../src/box'; 9 | 10 | const ansiStyles = require('ansi-styles'); 11 | 12 | 13 | describe('box', function() { 14 | describe('createBox', function() { 15 | it('should not throw an error if arguments are valid', function() { 16 | assert.doesNotThrow(() => { 17 | createBox({width: 3, height: 4}, {defaultSymbol: 'x'}); 18 | }); 19 | }); 20 | 21 | it('should throw an error if matrix has no height', function() { 22 | assert.throws(() => { 23 | createBox({width: 3, height: 0}, {defaultSymbol: 'x'}); 24 | }, /size/); 25 | }); 26 | 27 | it('should throw an error if matrix has no width', function() { 28 | assert.throws(() => { 29 | createBox({width: 0, height: 4}, {defaultSymbol: 'x'}); 30 | }, /size/); 31 | }); 32 | }); 33 | 34 | describe('defaultSymbolRuler', function() { 35 | it('can measure single byte character', function() { 36 | assert.strictEqual(defaultSymbolRuler('a'), 1); 37 | }); 38 | 39 | it('can measure multibyte character', function() { 40 | assert.strictEqual(defaultSymbolRuler('あ'), 2); 41 | }); 42 | 43 | it('can measure ANSI string', function() { 44 | const {red, underline} = ansiStyles; 45 | 46 | assert.strictEqual( 47 | defaultSymbolRuler( 48 | red.open + 'a' + red.close 49 | ), 50 | 1 51 | ); 52 | 53 | assert.strictEqual( 54 | defaultSymbolRuler( 55 | underline.open + 'a' + underline.close 56 | ), 57 | 1 58 | ); 59 | }); 60 | }); 61 | 62 | describe('renderBox', function() { 63 | describe('content pouring', function() { 64 | it('should overwrite the part of output where the content was poured', function() { 65 | const box = createBox({width: 5, height: 2}); 66 | box.content = 'foo'; 67 | assert.strictEqual(renderBox(box, {backgroundSymbol: '.'}), [ 68 | 'foo..', 69 | '.....', 70 | ].join('\n')); 71 | }); 72 | 73 | it('can break lines by "\\n"', function() { 74 | const box = createBox({width: 5, height: 3}); 75 | box.content = 'hello\n\nworld'; 76 | assert.strictEqual(renderBox(box, {backgroundSymbol: '.'}), [ 77 | 'hello', 78 | '.....', 79 | 'world', 80 | ].join('\n')); 81 | }); 82 | 83 | it('can break lines automatically', function() { 84 | const box = createBox({width: 5, height: 3}); 85 | box.content = 'helloworld!!'; 86 | assert.strictEqual(renderBox(box, {backgroundSymbol: '.'}), [ 87 | 'hello', 88 | 'world', 89 | '!!...', 90 | ].join('\n')); 91 | }); 92 | 93 | it('should ignore overflowing content', function() { 94 | const box = createBox({width: 5, height: 2}); 95 | box.content = 'helloworld!!'; 96 | assert.strictEqual(renderBox(box, {backgroundSymbol: '.'}), [ 97 | 'hello', 98 | 'world', 99 | ].join('\n')); 100 | }); 101 | }); 102 | 103 | describe('borders', function() { 104 | describe('each sides/corners of 1 width', function() { 105 | let box: Box; 106 | 107 | beforeEach(function() { 108 | box = createBox({x: 0, y: 0, width: 3, height: 4}, {defaultSymbol: '.'}); 109 | }); 110 | 111 | it('can set the top side border', function() { 112 | box.borders.topWidth = 1; 113 | box.borders.topSymbols = ['*']; 114 | assert.strictEqual(renderBox(box), [ 115 | '***', 116 | '...', 117 | '...', 118 | '...', 119 | ].join('\n')); 120 | }); 121 | 122 | it('can set the bottom side border', function() { 123 | box.borders.bottomWidth = 1; 124 | box.borders.bottomSymbols = ['*']; 125 | assert.strictEqual(renderBox(box), [ 126 | '...', 127 | '...', 128 | '...', 129 | '***', 130 | ].join('\n')); 131 | }); 132 | 133 | it('can set the left side border', function() { 134 | box.borders.leftWidth = 1; 135 | box.borders.leftSymbols = ['*']; 136 | assert.strictEqual(renderBox(box), [ 137 | '*..', 138 | '*..', 139 | '*..', 140 | '*..', 141 | ].join('\n')); 142 | }); 143 | 144 | it('can set the right side border', function() { 145 | box.borders.rightWidth = 1; 146 | box.borders.rightSymbols = ['*']; 147 | assert.strictEqual(renderBox(box), [ 148 | '..*', 149 | '..*', 150 | '..*', 151 | '..*', 152 | ].join('\n')); 153 | }); 154 | 155 | it('can set the top-left corner', function() { 156 | box.borders.topWidth = 1; 157 | box.borders.leftWidth = 1; 158 | box.borders.topLeftSymbols = ['*']; 159 | assert.strictEqual(renderBox(box), [ 160 | '* ', 161 | ' ..', 162 | ' ..', 163 | ' ..', 164 | ].join('\n')); 165 | }); 166 | 167 | it('can set the top-right corner', function() { 168 | box.borders.topWidth = 1; 169 | box.borders.rightWidth = 1; 170 | box.borders.topRightSymbols = ['*']; 171 | assert.strictEqual(renderBox(box), [ 172 | ' *', 173 | '.. ', 174 | '.. ', 175 | '.. ', 176 | ].join('\n')); 177 | }); 178 | 179 | it('can set the bottom-left corner', function() { 180 | box.borders.bottomWidth = 1; 181 | box.borders.leftWidth = 1; 182 | box.borders.bottomLeftSymbols = ['*']; 183 | assert.strictEqual(renderBox(box), [ 184 | ' ..', 185 | ' ..', 186 | ' ..', 187 | '* ', 188 | ].join('\n')); 189 | }); 190 | 191 | it('can set the bottom-right corner', function() { 192 | box.borders.bottomWidth = 1; 193 | box.borders.rightWidth = 1; 194 | box.borders.bottomRightSymbols = ['*']; 195 | assert.strictEqual(renderBox(box), [ 196 | '.. ', 197 | '.. ', 198 | '.. ', 199 | ' *', 200 | ].join('\n')); 201 | }); 202 | }); 203 | 204 | describe('borders in all sides', function() { 205 | it('works (case: 1)', function() { 206 | let box = createBox({x: 0, y: 0, width: 3, height: 4}); 207 | Object.assign(box.borders, { 208 | topWidth: 1, 209 | bottomWidth: 1, 210 | leftWidth: 1, 211 | rightWidth: 1, 212 | topSymbols: ['-'], 213 | bottomSymbols: ['-'], 214 | leftSymbols: ['|'], 215 | rightSymbols: ['|'], 216 | topLeftSymbols: ['+'], 217 | topRightSymbols: ['+'], 218 | bottomLeftSymbols: ['+'], 219 | bottomRightSymbols: ['+'], 220 | }); 221 | 222 | assert.strictEqual(renderBox(box, {backgroundSymbol: '.'}), [ 223 | '+-+', 224 | '|.|', 225 | '|.|', 226 | '+-+', 227 | ].join('\n')); 228 | }); 229 | 230 | it('works (case: 2)', function() { 231 | let box = createBox({x: 0, y: 0, width: 7, height: 6}); 232 | Object.assign(box.borders, { 233 | topWidth: 1, 234 | bottomWidth: 4, 235 | leftWidth: 2, 236 | rightWidth: 3, 237 | topSymbols: ['T'], 238 | bottomSymbols: ['B'], 239 | leftSymbols: ['L'], 240 | rightSymbols: ['R'], 241 | topLeftSymbols: ['1'], 242 | topRightSymbols: ['2'], 243 | bottomLeftSymbols: ['3'], 244 | bottomRightSymbols: ['4'], 245 | }); 246 | 247 | assert.strictEqual(renderBox(box, {backgroundSymbol: '.'}), [ 248 | '11TT222', 249 | 'LL..RRR', 250 | '33BB444', 251 | '33BB444', 252 | '33BB444', 253 | '33BB444', 254 | ].join('\n')); 255 | }); 256 | }); 257 | 258 | describe('content pouring inside of borders', function() { 259 | it('works', function() { 260 | let box = createBox({x: 0, y: 0, width: 7, height: 6}); 261 | 262 | Object.assign(box.borders, { 263 | topWidth: 1, 264 | bottomWidth: 1, 265 | leftWidth: 1, 266 | rightWidth: 1, 267 | topSymbols: ['-'], 268 | bottomSymbols: ['-'], 269 | leftSymbols: ['|'], 270 | rightSymbols: ['|'], 271 | topLeftSymbols: ['+'], 272 | topRightSymbols: ['+'], 273 | bottomLeftSymbols: ['+'], 274 | bottomRightSymbols: ['+'], 275 | }); 276 | 277 | box.content = 'へlloworlど\nふー\nbar'; 278 | 279 | assert.strictEqual(renderBox(box, {backgroundSymbol: '.'}), [ 280 | '+-----+', 281 | '|へllo|', 282 | '|worl.|', 283 | '|ど...|', 284 | '|ふー.|', 285 | '+-----+', 286 | ].join('\n')); 287 | }); 288 | }); 289 | }); 290 | 291 | describe('children', function() { 292 | describe('the box that has a child', function() { 293 | let box: Box; 294 | let child: Box; 295 | 296 | beforeEach(function() { 297 | box = createBox({x: 0, y: 0, width: 7, height: 4}); 298 | child = createBox({x: 0, y: 0, width: 3, height: 2}, {defaultSymbol: 'c'}); 299 | box.children.push(child); 300 | }); 301 | 302 | it('can move the child', function() { 303 | child.x = 2; 304 | child.y = 1; 305 | 306 | assert.strictEqual(renderBox(box, {backgroundSymbol: '.'}), [ 307 | '.......', 308 | '..ccc..', 309 | '..ccc..', 310 | '.......', 311 | ].join('\n')); 312 | }); 313 | 314 | it('applies the content of the child', function() { 315 | child.content = '1234'; 316 | 317 | assert.strictEqual(renderBox(box, {backgroundSymbol: '.'}), [ 318 | '123....', 319 | '4......', 320 | '.......', 321 | '.......', 322 | ].join('\n')); 323 | }); 324 | 325 | it('applies the multibyte content of the child', function() { 326 | child.content = 'あ\n1い'; 327 | 328 | assert.strictEqual(renderBox(box, {backgroundSymbol: '.'}), [ 329 | 'あ.....', 330 | '1い....', 331 | '.......', 332 | '.......', 333 | ].join('\n')); 334 | }); 335 | 336 | it('should be overwrite with the content of the child', function() { 337 | box.content = '1234567\nabcdefg\nABCDEFG'; 338 | child.x = 1; 339 | child.y = 1; 340 | 341 | assert.strictEqual(renderBox(box, {backgroundSymbol: '.'}), [ 342 | '1234567', 343 | 'acccefg', 344 | 'AcccEFG', 345 | '.......', 346 | ].join('\n')); 347 | }); 348 | 349 | it('should be overwrite with the content of the child even when the box contains multibytes', function() { 350 | box.content = 'あいう\n1えおか'; 351 | child.x = 1; 352 | child.y = 0; 353 | 354 | assert.strictEqual(renderBox(box, {backgroundSymbol: '.'}), [ 355 | '.cccう.', 356 | '1ccc.か', 357 | '.......', 358 | '.......', 359 | ].join('\n')); 360 | }); 361 | }); 362 | 363 | describe('the box that has two children', function() { 364 | let box: Box; 365 | let child1: Box; 366 | let child2: Box; 367 | 368 | beforeEach(function() { 369 | box = createBox({x: 0, y: 0, width: 3, height: 3}); 370 | child1 = createBox({x: 0, y: 0, width: 2, height: 2}, {defaultSymbol: '1'}); 371 | child2 = createBox({x: 0, y: 0, width: 1, height: 1}, {defaultSymbol: '2'}); 372 | box.children.push(child1); 373 | box.children.push(child2); 374 | }); 375 | 376 | describe('the children have same zIndex', function() { 377 | it('puts the box added later at a higher position', function() { 378 | assert.strictEqual(renderBox(box, {backgroundSymbol: '.'}), [ 379 | '21.', 380 | '11.', 381 | '...', 382 | ].join('\n')); 383 | }); 384 | }); 385 | 386 | describe('the children have another zIndex', function() { 387 | it('puts the box of high zIndex at a higher position', function() { 388 | child1.zIndex = 1; 389 | 390 | assert.strictEqual(renderBox(box, {backgroundSymbol: '.'}), [ 391 | '11.', 392 | '11.', 393 | '...', 394 | ].join('\n')); 395 | }); 396 | }); 397 | }); 398 | }); 399 | }); 400 | }); 401 | -------------------------------------------------------------------------------- /test/index.ts: -------------------------------------------------------------------------------- 1 | /** 2 | * This test file is also used as a test of whether the public APIs are sufficient. 3 | * Therefore, the values to be tested MUST be created only with the public APIs. 4 | */ 5 | 6 | import * as assert from 'assert'; 7 | 8 | import { 9 | createBox, 10 | createBordersByType, 11 | createElementBody, 12 | getHeight, 13 | getMaxX, 14 | getMaxY, 15 | getWidth, 16 | render, 17 | } from '../src/index'; 18 | 19 | const ansiStyles = require('ansi-styles'); 20 | 21 | describe('index', function() { 22 | describe('render', function() { 23 | describe('content', function() { 24 | it('can render content that mixes multiple special characters', function() { 25 | const {red, reset} = ansiStyles; 26 | const surrogatePair = '\ud867\ude3d'; 27 | const box = createBox({width: 7, height: 2}); 28 | box.content = `${surrogatePair}cdefあ${red.open}いう${red.close}e`; 29 | assert.strictEqual( 30 | render(box), 31 | [ 32 | `${surrogatePair}cdef `, 33 | `あ${red.open}い${reset.close}${red.open}う${reset.close}e`, 34 | ].join('\n') 35 | ); 36 | }); 37 | }); 38 | 39 | describe('borders', function() { 40 | describe('createBordersByType', function() { 41 | it('can render the "default" type', function() { 42 | const box = createBox({width: 5, height: 4}); 43 | box.borders = createBordersByType('default'); 44 | 45 | assert.strictEqual( 46 | render(box), 47 | [ 48 | '+---+', 49 | '| |', 50 | '| |', 51 | '+---+', 52 | ].join('\n') 53 | ); 54 | }); 55 | }); 56 | }); 57 | 58 | describe('scroll bar', function() { 59 | const box = createBox({width: 3, height: 2}); 60 | 61 | it('can render the default scroll bar', function() { 62 | box.scroll = {y: 0}; 63 | assert.strictEqual( 64 | render(box), 65 | [ 66 | ' #', 67 | ' #', 68 | ].join('\n') 69 | ); 70 | }); 71 | 72 | it('should scroll the content in sync with the scroll bar', function() { 73 | box.content = '00112233'; 74 | box.scroll = {y: 2}; 75 | assert.strictEqual( 76 | render(box), 77 | [ 78 | '22|', 79 | '33#', 80 | ].join('\n') 81 | ); 82 | }); 83 | 84 | it('can change the appearance of the scroll bar', function() { 85 | box.content = '\n\n\n'; 86 | box.scroll = { 87 | y: 0, 88 | trackElement: createElementBody('a'), 89 | thumbElement: createElementBody('b'), 90 | }; 91 | assert.strictEqual( 92 | render(box), 93 | [ 94 | ' b', 95 | ' a', 96 | ].join('\n') 97 | ); 98 | }); 99 | }); 100 | 101 | describe('children', function() { 102 | it('can have a child', function() { 103 | const box = createBox({width: 8, height: 5}); 104 | const child = createBox({x: 3, y: 1, width: 4, height: 3}, {defaultSymbol: '.'}); 105 | box.children.push(child); 106 | assert.strictEqual( 107 | render(box), 108 | [ 109 | ' ', 110 | ' .... ', 111 | ' .... ', 112 | ' .... ', 113 | ' ', 114 | ].join('\n') 115 | ); 116 | }); 117 | 118 | it('should make the older brother is overwritten with the younger one', function() { 119 | const box = createBox({width: 8, height: 5}); 120 | const child1 = createBox({x: 3, y: 1, width: 4, height: 3}, {defaultSymbol: '1'}); 121 | const child2 = createBox({x: 2, width: 2, height: 5}, {defaultSymbol: '2'}); 122 | box.children = [child1, child2]; 123 | 124 | assert.strictEqual( 125 | render(box), 126 | [ 127 | ' 22 ', 128 | ' 22111 ', 129 | ' 22111 ', 130 | ' 22111 ', 131 | ' 22 ', 132 | ].join('\n') 133 | ); 134 | }); 135 | 136 | it('should make the winner by the higher "zIndex"', function() { 137 | const box = createBox({width: 2, height: 2}); 138 | const child1 = createBox({width: 2, height: 1}, {defaultSymbol: '1'}); 139 | child1.zIndex = 1; 140 | const child2 = createBox({width: 1, height: 2}, {defaultSymbol: '2'}); 141 | box.children = [child1, child2]; 142 | 143 | assert.strictEqual( 144 | render(box), 145 | [ 146 | '11', 147 | '2 ', 148 | ].join('\n') 149 | ); 150 | }); 151 | 152 | it('can have children recursively', function() { 153 | const box = createBox({width: 3, height: 3}); 154 | const child = createBox({width: 2, height: 2}, {defaultSymbol: '1'}); 155 | const grandchild = createBox({width: 1, height: 1}, {defaultSymbol: '2'}); 156 | child.children = [grandchild]; 157 | box.children = [child]; 158 | 159 | assert.strictEqual( 160 | render(box), 161 | [ 162 | '21 ', 163 | '11 ', 164 | ' ', 165 | ].join('\n') 166 | ); 167 | }); 168 | }); 169 | 170 | describe('complex cases', function() { 171 | it('should apply scroll bars after borders', function() { 172 | const box = createBox({width: 5, height: 4}); 173 | box.borders = createBordersByType('default'); 174 | box.scroll = {y: 0}; 175 | box.content = 'abc'; 176 | assert.strictEqual( 177 | render(box), 178 | [ 179 | '+---+', 180 | '|ab#|', 181 | '|c #|', 182 | '+---+', 183 | ].join('\n') 184 | ); 185 | }); 186 | 187 | it('should ignore borders if there is no place', function() { 188 | const box1 = createBox({width: 1, height: 2}); 189 | box1.borders = createBordersByType('default'); 190 | assert.strictEqual( 191 | render(box1), 192 | [ 193 | ' ', 194 | ' ', 195 | ].join('\n') 196 | ); 197 | 198 | const box2 = createBox({width: 2, height: 1}); 199 | box2.borders = createBordersByType('default'); 200 | assert.strictEqual( 201 | render(box2), 202 | ' ' 203 | ); 204 | }); 205 | 206 | it('should ignore scroll bars if there is no place', function() { 207 | const box = createBox({width: 2, height: 3}); 208 | box.borders = createBordersByType('default'); 209 | box.scroll = {y: 0}; 210 | assert.strictEqual( 211 | render(box), 212 | [ 213 | '++', 214 | '||', 215 | '++', 216 | ].join('\n') 217 | ); 218 | }); 219 | }); 220 | }); 221 | 222 | describe('getWidth, getHeight, getMaxX, getMaxY', function() { 223 | const box = createBox({width: 7, height: 5}); 224 | 225 | it('getWidth', function() { 226 | assert.strictEqual(getWidth(box), 7); 227 | }); 228 | 229 | it('getHeight', function() { 230 | assert.strictEqual(getHeight(box), 5); 231 | }); 232 | 233 | it('getMaxX', function() { 234 | assert.strictEqual(getMaxX(box), 6); 235 | }); 236 | 237 | it('getMaxY', function() { 238 | assert.strictEqual(getMaxY(box), 4); 239 | }); 240 | }); 241 | }); 242 | -------------------------------------------------------------------------------- /test/matrix.ts: -------------------------------------------------------------------------------- 1 | import * as assert from 'assert'; 2 | 3 | const ansiStyles = require('ansi-styles'); 4 | 5 | import { 6 | defaultSymbolRuler, 7 | } from '../src/box'; 8 | import { 9 | Matrix, 10 | PourableElement, 11 | createDefaultElementStyle, 12 | createMatrix, 13 | createMatrixFromText, 14 | cropMatrix, 15 | decodeAnsiStyles, 16 | matrixToRectangle, 17 | overwriteMatrix, 18 | parseContent, 19 | pourContent, 20 | renderMatrix, 21 | } from '../src/matrix'; 22 | 23 | 24 | describe('matrix', function() { 25 | describe('matrixToRectangle', function() { 26 | it('can cast from a matrix to a rectangle', function() { 27 | const rectangle = matrixToRectangle(createMatrix({width: 1, height: 2})); 28 | assert.deepStrictEqual(rectangle, {x: 0, y: 0, width: 1, height: 2}); 29 | }); 30 | }); 31 | 32 | describe('overwriteMatrix', function() { 33 | it('works', function() { 34 | let matrix = createMatrix({width: 5, height: 7}, '.'); 35 | const replacer = createMatrix({width: 2, height: 3}, 'x'); 36 | matrix = overwriteMatrix(matrix, replacer, {x: 1, y: 2}, (symbol) => 1); 37 | assert.strictEqual(renderMatrix(matrix, ''), [ 38 | '.....', 39 | '.....', 40 | '.xx..', 41 | '.xx..', 42 | '.xx..', 43 | '.....', 44 | '.....', 45 | ].join('\n')); 46 | }); 47 | 48 | it('does not overwrite if the replacer width is 0', function() { 49 | const matrix = createMatrix({width: 2, height: 2}, '.'); 50 | const replacer = createMatrix({width: 0, height: 1}, 'x'); 51 | const newMatrix = overwriteMatrix(matrix, replacer, {x: 0, y: 0}, (symbol) => 1); 52 | assert.deepStrictEqual(matrix, newMatrix); 53 | }); 54 | 55 | it('does not overwrite if the replacer height is 0', function() { 56 | const matrix = createMatrix({width: 2, height: 2}, '.'); 57 | const replacer = createMatrix({width: 1, height: 0}, 'x'); 58 | const newMatrix = overwriteMatrix(matrix, replacer, {x: 0, y: 0}, (symbol) => 1); 59 | assert.deepStrictEqual(matrix, newMatrix); 60 | }); 61 | 62 | describe('multibyte fragments deletion', function() { 63 | let matrix: Matrix; 64 | let replacer: Matrix; 65 | 66 | beforeEach(function() { 67 | matrix = createMatrixFromText([ 68 | '....', 69 | '....', 70 | '....', 71 | ].join('\n')); 72 | replacer = createMatrixFromText([ 73 | 'xx', 74 | 'xx', 75 | ].join('\n')); 76 | }); 77 | 78 | it('1', function() { 79 | replacer[0][0].symbol = false; 80 | const newMatrix = overwriteMatrix(matrix, replacer, {x: 2, y: 1}, defaultSymbolRuler); 81 | 82 | assert.strictEqual(renderMatrix(newMatrix, '-'), [ 83 | '....', 84 | '..-x', 85 | '..xx', 86 | ].join('\n')); 87 | }); 88 | 89 | it('2', function() { 90 | replacer[1][1].symbol = 'あ'; 91 | const newMatrix = overwriteMatrix(matrix, replacer, {x: 0, y: 0}, defaultSymbolRuler); 92 | 93 | assert.strictEqual(renderMatrix(newMatrix, '-'), [ 94 | 'xx..', 95 | 'x-..', 96 | '....', 97 | ].join('\n')); 98 | }); 99 | 100 | it('3', function() { 101 | matrix[1][0].symbol = 'あ'; 102 | const newMatrix = overwriteMatrix(matrix, replacer, {x: 1, y: 1}, defaultSymbolRuler); 103 | 104 | assert.strictEqual(renderMatrix(newMatrix, '-'), [ 105 | '....', 106 | '-xx.', 107 | '.xx.', 108 | ].join('\n')); 109 | }); 110 | 111 | it('4', function() { 112 | matrix[2][2].symbol = false; 113 | const newMatrix = overwriteMatrix(matrix, replacer, {x: 0, y: 1}, defaultSymbolRuler); 114 | 115 | assert.strictEqual(renderMatrix(newMatrix, '-'), [ 116 | '....', 117 | 'xx..', 118 | 'xx-.', 119 | ].join('\n')); 120 | }); 121 | }); 122 | }); 123 | 124 | describe('cropMatrix', function() { 125 | const baseMatrix = createMatrixFromText([ 126 | '123', 127 | '456', 128 | '789', 129 | 'abc', 130 | ].join('\n')); 131 | 132 | it('can crop the inside', function() { 133 | const matrix1 = cropMatrix(baseMatrix, {x: 0, y: 0, width: 2, height: 3}); 134 | assert.strictEqual(matrix1[0][0].symbol, '1'); 135 | assert.strictEqual(matrix1[0][1].symbol, '2'); 136 | assert.strictEqual(matrix1[1][0].symbol, '4'); 137 | assert.strictEqual(matrix1[1][1].symbol, '5'); 138 | assert.strictEqual(matrix1[2][0].symbol, '7'); 139 | assert.strictEqual(matrix1[2][1].symbol, '8'); 140 | 141 | const matrix2 = cropMatrix(baseMatrix, {x: 1, y: 2, width: 2, height: 2}); 142 | assert.strictEqual(matrix2[0][0].symbol, '8'); 143 | assert.strictEqual(matrix2[0][1].symbol, '9'); 144 | assert.strictEqual(matrix2[1][0].symbol, 'b'); 145 | assert.strictEqual(matrix2[1][1].symbol, 'c'); 146 | }); 147 | 148 | it('should ignore the outside part', function() { 149 | const matrix1 = cropMatrix(baseMatrix, {x: 2, y: 0, width: 2, height: 2}); 150 | assert.strictEqual(matrix1[0][0].symbol, '3'); 151 | assert.strictEqual(matrix1[1][0].symbol, '6'); 152 | 153 | const matrix2 = cropMatrix(baseMatrix, {x: 0, y: 3, width: 2, height: 2}); 154 | assert.strictEqual(matrix2[0][0].symbol, 'a'); 155 | assert.strictEqual(matrix2[0][1].symbol, 'b'); 156 | }); 157 | 158 | it('should return [] if it can not crop at all', function() { 159 | const matrix = cropMatrix(baseMatrix, {x: 3, y: 0, width: 2, height: 3}); 160 | assert.deepStrictEqual(matrix, []); 161 | }); 162 | }); 163 | 164 | describe('decodeAnsiStyles', function() { 165 | it('can decode a non-ansi string', function() { 166 | assert.deepStrictEqual(decodeAnsiStyles('a'), {}); 167 | }); 168 | 169 | it('should throw an error when it receives a not single character string', function() { 170 | assert.throws(function() { 171 | decodeAnsiStyles('ab'); 172 | }, /single character/); 173 | assert.throws(function() { 174 | decodeAnsiStyles(`${ansiStyles.red.open}ab${ansiStyles.red.close}`); 175 | }, /single character/); 176 | }); 177 | 178 | describe('foregroundColor', function() { 179 | [ 180 | 'black', 181 | 'red', 182 | 'green', 183 | 'yellow', 184 | 'blue', 185 | 'magenta', 186 | 'cyan', 187 | 'white', 188 | // NOTE: "blackBright" will be added in the following commit. 189 | // https://github.com/chalk/ansi-styles/commit/fb5b656d9fce745881c36deb8ff800b5080d9f89 190 | 'grey', 191 | //'blackBright', 192 | 'redBright', 193 | 'greenBright', 194 | 'yellowBright', 195 | 'blueBright', 196 | 'magentaBright', 197 | 'cyanBright', 198 | 'whiteBright', 199 | ].forEach(name => { 200 | it(name, function() { 201 | const styles = decodeAnsiStyles(`${ansiStyles.color[name].open}a${ansiStyles.color[name].close}`); 202 | assert.strictEqual(styles.foregroundColor, name); 203 | }); 204 | }); 205 | }); 206 | 207 | describe('backgroundColor', function() { 208 | [ 209 | 'bgBlack', 210 | 'bgRed', 211 | 'bgGreen', 212 | 'bgYellow', 213 | 'bgBlue', 214 | 'bgMagenta', 215 | 'bgCyan', 216 | 'bgWhite', 217 | 'bgBlackBright', 218 | 'bgRedBright', 219 | 'bgGreenBright', 220 | 'bgYellowBright', 221 | 'bgBlueBright', 222 | 'bgMagentaBright', 223 | 'bgCyanBright', 224 | 'bgWhiteBright', 225 | ].forEach(name => { 226 | it(name, function() { 227 | const styles = decodeAnsiStyles(`${ansiStyles.bgColor[name].open}a${ansiStyles.bgColor[name].close}`); 228 | assert.strictEqual(styles.backgroundColor, name); 229 | }); 230 | }); 231 | }); 232 | 233 | describe('modifiers', function() { 234 | [ 235 | 'bold', 236 | 'dim', 237 | 'italic', 238 | 'underline', 239 | 'inverse', 240 | 'hidden', 241 | 'strikethrough', 242 | ].forEach(name => { 243 | it(name, function() { 244 | const styles = decodeAnsiStyles(`${ansiStyles[name].open}a${ansiStyles.reset.close}`) as any; 245 | assert.strictEqual(styles[name], true); 246 | }); 247 | }); 248 | }); 249 | 250 | describe('Complex cases', function() { 251 | it('can decode both "foregroundColor" and "backgroundColor" together', function() { 252 | const {red, bgRed} = ansiStyles; 253 | const styles = decodeAnsiStyles(`${red.open}${bgRed.open}a${bgRed.close}${red.close}`); 254 | assert.strictEqual(styles.foregroundColor, 'red'); 255 | assert.strictEqual(styles.backgroundColor, 'bgRed'); 256 | }); 257 | }); 258 | }); 259 | 260 | describe('parseContent', function() { 261 | function createPourableElement(): PourableElement { 262 | return { 263 | isLineBreaking: false, 264 | symbol: '', 265 | symbolWidth: 1, 266 | style: createDefaultElementStyle(), 267 | }; 268 | }; 269 | 270 | it('can parse non-ansi ascii strings', function() { 271 | assert.deepStrictEqual( 272 | parseContent('abc', () => 1), 273 | [ 274 | Object.assign(createPourableElement(), {symbol: 'a'}), 275 | Object.assign(createPourableElement(), {symbol: 'b'}), 276 | Object.assign(createPourableElement(), {symbol: 'c'}), 277 | ] 278 | ); 279 | }); 280 | 281 | it('can parse ansi strings included some newline characters', function() { 282 | assert.deepStrictEqual( 283 | parseContent('\na\n\nbc\n', () => 1), 284 | [ 285 | Object.assign(createPourableElement(), {isLineBreaking: true}), 286 | Object.assign(createPourableElement(), {symbol: 'a'}), 287 | Object.assign(createPourableElement(), {isLineBreaking: true}), 288 | Object.assign(createPourableElement(), {isLineBreaking: true}), 289 | Object.assign(createPourableElement(), {symbol: 'b'}), 290 | Object.assign(createPourableElement(), {symbol: 'c'}), 291 | Object.assign(createPourableElement(), {isLineBreaking: true}), 292 | ] 293 | ); 294 | }); 295 | 296 | it('can parse non-ansi multibyte strings', function() { 297 | assert.deepStrictEqual( 298 | parseContent('あいう', () => 1), 299 | [ 300 | Object.assign(createPourableElement(), {symbol: 'あ'}), 301 | Object.assign(createPourableElement(), {symbol: 'い'}), 302 | Object.assign(createPourableElement(), {symbol: 'う'}), 303 | ] 304 | ); 305 | assert.deepStrictEqual( 306 | parseContent('あiうeお', () => 1), 307 | [ 308 | Object.assign(createPourableElement(), {symbol: 'あ'}), 309 | Object.assign(createPourableElement(), {symbol: 'i'}), 310 | Object.assign(createPourableElement(), {symbol: 'う'}), 311 | Object.assign(createPourableElement(), {symbol: 'e'}), 312 | Object.assign(createPourableElement(), {symbol: 'お'}), 313 | ] 314 | ); 315 | }); 316 | 317 | it('can parse non-ansi surrogate pairs', function() { 318 | const surrogatePair = '\ud867\ude3d'; 319 | assert.deepStrictEqual( 320 | parseContent(`${surrogatePair}${surrogatePair}`, () => 1), 321 | [ 322 | Object.assign(createPourableElement(), {symbol: surrogatePair}), 323 | Object.assign(createPourableElement(), {symbol: surrogatePair}), 324 | ] 325 | ); 326 | assert.deepStrictEqual( 327 | parseContent(`a${surrogatePair}あ${surrogatePair}`, () => 1), 328 | [ 329 | Object.assign(createPourableElement(), {symbol: 'a'}), 330 | Object.assign(createPourableElement(), {symbol: surrogatePair}), 331 | Object.assign(createPourableElement(), {symbol: 'あ'}), 332 | Object.assign(createPourableElement(), {symbol: surrogatePair}), 333 | ] 334 | ); 335 | }); 336 | 337 | it('can parse ansi multibyte strings', function() { 338 | const {red, bgBlue} = ansiStyles; 339 | 340 | assert.deepStrictEqual( 341 | parseContent(`a${red.open}bc${red.close}d`, () => 1), 342 | [ 343 | Object.assign(createPourableElement(), {symbol: 'a'}), 344 | Object.assign(createPourableElement(), { 345 | symbol: 'b', 346 | style: Object.assign(createDefaultElementStyle(), {foregroundColor: 'red'}), 347 | }), 348 | Object.assign(createPourableElement(), { 349 | symbol: 'c', 350 | style: Object.assign(createDefaultElementStyle(), {foregroundColor: 'red'}), 351 | }), 352 | Object.assign(createPourableElement(), {symbol: 'd'}), 353 | ] 354 | ); 355 | assert.deepStrictEqual( 356 | parseContent(`あ${red.open}いc${red.close}`, () => 1), 357 | [ 358 | Object.assign(createPourableElement(), {symbol: 'あ'}), 359 | Object.assign(createPourableElement(), { 360 | symbol: 'い', 361 | style: Object.assign(createDefaultElementStyle(), {foregroundColor: 'red'}), 362 | }), 363 | Object.assign(createPourableElement(), { 364 | symbol: 'c', 365 | style: Object.assign(createDefaultElementStyle(), {foregroundColor: 'red'}), 366 | }), 367 | ] 368 | ); 369 | assert.deepStrictEqual( 370 | parseContent(`a${red.open}b${bgBlue.open}c${bgBlue.close}${red.close}d`, () => 1), 371 | [ 372 | Object.assign(createPourableElement(), {symbol: 'a'}), 373 | Object.assign(createPourableElement(), { 374 | symbol: 'b', 375 | style: Object.assign(createDefaultElementStyle(), {foregroundColor: 'red'}), 376 | }), 377 | Object.assign(createPourableElement(), { 378 | symbol: 'c', 379 | style: Object.assign(createDefaultElementStyle(), {foregroundColor: 'red', backgroundColor: 'bgBlue'}), 380 | }), 381 | Object.assign(createPourableElement(), {symbol: 'd'}), 382 | ] 383 | ); 384 | }); 385 | }); 386 | 387 | describe('pourContent', function() { 388 | let matrix: Matrix; 389 | 390 | beforeEach(function() { 391 | matrix = createMatrix({width: 4, height: 3}, null); 392 | }); 393 | 394 | it('works', function() { 395 | const elements = parseContent('12345\nabc', () => 1); 396 | matrix = pourContent(matrix, elements, 0); 397 | assert.strictEqual(renderMatrix(matrix, '.'), [ 398 | '1234', 399 | '5...', 400 | 'abc.', 401 | ].join('\n')); 402 | }); 403 | 404 | it('ignores zero-width symbols', function() { 405 | const elements = parseContent('1234aaa567aaa8aaa9', (symbol) => { 406 | return symbol === 'a' ? 0 : 1; 407 | }); 408 | matrix = pourContent(matrix, elements, 0); 409 | assert.strictEqual(renderMatrix(matrix, '.'), [ 410 | '1234', 411 | '5678', 412 | '9...', 413 | ].join('\n')); 414 | }); 415 | 416 | it('can specify the starting Y', function() { 417 | const elements1 = parseContent('0\n1\n2\n3\n4\n5', () => 1); 418 | const result1 = pourContent(matrix, elements1, 1); 419 | assert.strictEqual(renderMatrix(result1, '.'), [ 420 | '1...', 421 | '2...', 422 | '3...', 423 | ].join('\n')); 424 | 425 | const elements2 = parseContent('0\n1\n2\n3\n4\n5', () => 1); 426 | const result2 = pourContent(matrix, elements2, 4); 427 | assert.strictEqual(renderMatrix(result2, '.'), [ 428 | '4...', 429 | '5...', 430 | '....', 431 | ].join('\n')); 432 | }); 433 | 434 | describe('multibytes characters', function() { 435 | it('reduces space considering the width of multibytes', function() { 436 | const elements = parseContent('あ\n\nいうえ', defaultSymbolRuler); 437 | matrix = pourContent(matrix, elements, 0); 438 | assert.strictEqual(renderMatrix(matrix, '.'), [ 439 | 'あ..', 440 | '....', 441 | 'いう', 442 | ].join('\n')); 443 | }); 444 | 445 | it('breaks the line automatically', function() { 446 | const elements = parseContent('あいうえおかき', defaultSymbolRuler); 447 | matrix = pourContent(matrix, elements, 0); 448 | assert.strictEqual(renderMatrix(matrix, '.'), [ 449 | 'あい', 450 | 'うえ', 451 | 'おか', 452 | ].join('\n')); 453 | }); 454 | 455 | it('breaks the line automatically even when the width is not enough', function() { 456 | const elements = parseContent('1あい2う3え', defaultSymbolRuler); 457 | matrix = pourContent(matrix, elements, 0); 458 | assert.strictEqual(renderMatrix(matrix, '.'), [ 459 | '1あ.', 460 | 'い2.', 461 | 'う3.', 462 | ].join('\n')); 463 | }); 464 | 465 | it('cuts the content if a multibyte character appear when the width is 1', function() { 466 | matrix = createMatrix({width: 1, height: 5}, null); 467 | const elements = parseContent('12あ34', defaultSymbolRuler); 468 | matrix = pourContent(matrix, elements, 0); 469 | assert.strictEqual(renderMatrix(matrix, '.'), [ 470 | '1', 471 | '2', 472 | '.', 473 | '.', 474 | '.', 475 | ].join('\n')); 476 | }); 477 | }); 478 | }); 479 | 480 | describe('renderMatrix', function() { 481 | it('works', function() { 482 | const matrix = createMatrix({width: 2, height: 3}, '.'); 483 | assert.strictEqual(renderMatrix(matrix, 'x'), [ 484 | '..', 485 | '..', 486 | '..', 487 | ].join('\n')); 488 | }); 489 | 490 | it('replaces null symbols to the default symbol', function() { 491 | const matrix = createMatrix({width: 2, height: 3}, null); 492 | assert.strictEqual(renderMatrix(matrix, 'x'), [ 493 | 'xx', 494 | 'xx', 495 | 'xx', 496 | ].join('\n')); 497 | }); 498 | 499 | it('replaces false symbols to blank', function() { 500 | const matrix = createMatrix({width: 2, height: 3}, null); 501 | matrix[0][0].symbol = false; 502 | matrix[2][1].symbol = false; 503 | assert.strictEqual(renderMatrix(matrix, '.'), [ 504 | '.', 505 | '..', 506 | '.', 507 | ].join('\n')); 508 | }); 509 | 510 | it('can render single byte ANSI characters', function() { 511 | const {blue, reset, underline} = ansiStyles; 512 | const elements = parseContent(`a${blue.open}${underline.open}bc${reset.close}d`, defaultSymbolRuler); 513 | let matrix = createMatrix({width: 2, height: 2}, null); 514 | matrix = pourContent(matrix, elements, 0); 515 | assert.strictEqual(renderMatrix(matrix, '.'), [ 516 | `a${blue.open}${underline.open}b${reset.close}`, 517 | `${blue.open}${underline.open}c${reset.close}d`, 518 | ].join('\n')); 519 | }); 520 | }); 521 | }); 522 | -------------------------------------------------------------------------------- /test/rectangle.ts: -------------------------------------------------------------------------------- 1 | import * as assert from 'assert'; 2 | 3 | import {shrinkRectangle} from '../src/rectangle'; 4 | 5 | 6 | describe('rectangle', function() { 7 | describe('shrinkRectangle', function() { 8 | const rect = {x: 1, y: 2, width: 3, height: 4}; 9 | 10 | it('can apply no paddings', function() { 11 | assert.deepStrictEqual(shrinkRectangle(rect), {x: 1, y: 2, width: 3, height: 4}); 12 | }); 13 | 14 | it('can pad to the top', function() { 15 | assert.deepStrictEqual(shrinkRectangle(rect, {top: 2}), {x: 1, y: 4, width: 3, height: 2}); 16 | }); 17 | 18 | it('can set to the bottom', function() { 19 | assert.deepStrictEqual(shrinkRectangle(rect, {bottom: 2}), {x: 1, y: 2, width: 3, height: 2}); 20 | }); 21 | 22 | it('can pad to the left', function() { 23 | assert.deepStrictEqual(shrinkRectangle(rect, {left: 2}), {x: 3, y: 2, width: 1, height: 4}); 24 | }); 25 | 26 | it('can pad to the right', function() { 27 | assert.deepStrictEqual(shrinkRectangle(rect, {right: 2}), {x: 1, y: 2, width: 1, height: 4}); 28 | }); 29 | 30 | it('can set to all sides', function() { 31 | assert.deepStrictEqual( 32 | shrinkRectangle(rect, {top: 1, bottom: 1, left: 1, right: 1}), 33 | {x: 2, y: 3, width: 1, height: 2} 34 | ); 35 | }); 36 | 37 | it('can be set the size to 0', function() { 38 | assert.deepStrictEqual( 39 | shrinkRectangle(rect, {top: 1, bottom: 3, left: 1, right: 2}), 40 | {x: 2, y: 3, width: 0, height: 0} 41 | ); 42 | }); 43 | }); 44 | }); 45 | -------------------------------------------------------------------------------- /test/scroll-bar.ts: -------------------------------------------------------------------------------- 1 | import * as assert from 'assert'; 2 | 3 | import { 4 | createDefaultElementStyle, 5 | createElementBody, 6 | createMatrix, 7 | parseContent, 8 | renderMatrix, 9 | } from '../src/matrix'; 10 | import { 11 | placeScrollBar, 12 | } from '../src/scroll-bar'; 13 | 14 | const ansiStyles = require('ansi-styles'); 15 | 16 | describe('scroll-bar', function() { 17 | const trackElementBody = createElementBody('|'); 18 | const thumbElementBody = createElementBody('#'); 19 | 20 | describe('placeScrollBar', function() { 21 | it('should draw a scroll bar the same as the height of the matrix if there is no content', function() { 22 | const matrix = createMatrix({width: 3, height: 2}); 23 | const result = placeScrollBar(matrix, parseContent('', c => 1), 0, trackElementBody, thumbElementBody); 24 | assert.strictEqual( 25 | renderMatrix(result.matrix, '.'), 26 | [ 27 | '..#', 28 | '..#', 29 | ].join('\n') 30 | ); 31 | }); 32 | 33 | it('should draw a scroll bar the same as the height of the matrix if the content fits', function() { 34 | const matrix = createMatrix({width: 3, height: 2}); 35 | const result = placeScrollBar(matrix, parseContent('a', c => 1), 0, trackElementBody, thumbElementBody); 36 | assert.strictEqual( 37 | renderMatrix(result.matrix, '.'), 38 | [ 39 | '..#', 40 | '..#', 41 | ].join('\n') 42 | ); 43 | }); 44 | 45 | it('can change the style of the scroll bar', function() { 46 | const {bgWhite, bgYellow, reset} = ansiStyles; 47 | const matrix = createMatrix({width: 1, height: 2}); 48 | const ansiTrackElementBody = { 49 | symbol: ' ', 50 | style: Object.assign(createDefaultElementStyle(), { 51 | backgroundColor: 'bgWhite', 52 | }), 53 | }; 54 | const ansiThumbElementBody = { 55 | symbol: ' ', 56 | style: Object.assign(createDefaultElementStyle(), { 57 | backgroundColor: 'bgYellow', 58 | }), 59 | }; 60 | const result = placeScrollBar( 61 | matrix, parseContent('\n\n\n', c => 1), 0, ansiTrackElementBody, ansiThumbElementBody); 62 | assert.strictEqual( 63 | renderMatrix(result.matrix, '.'), 64 | [ 65 | bgYellow.open + ' ' + reset.close, 66 | bgWhite.open + ' ' + reset.close, 67 | ].join('\n') 68 | ); 69 | }); 70 | 71 | describe('scroll bar movement', function() { 72 | describe('when the height of scroll bar is 1', function() { 73 | const matrix = createMatrix({width: 1, height: 5}); 74 | const content = '\n'.repeat(54); // 55 rows 75 | const elements = parseContent(content, c => 1); 76 | 77 | [ 78 | {scrollY: 0, expected: ['#', '|', '|', '|', '|'].join('\n')}, 79 | {scrollY: 9, expected: ['#', '|', '|', '|', '|'].join('\n')}, 80 | {scrollY: 10, expected: ['|', '#', '|', '|', '|'].join('\n')}, 81 | {scrollY: 19, expected: ['|', '#', '|', '|', '|'].join('\n')}, 82 | {scrollY: 20, expected: ['|', '|', '#', '|', '|'].join('\n')}, 83 | {scrollY: 29, expected: ['|', '|', '#', '|', '|'].join('\n')}, 84 | {scrollY: 30, expected: ['|', '|', '|', '#', '|'].join('\n')}, 85 | {scrollY: 39, expected: ['|', '|', '|', '#', '|'].join('\n')}, 86 | {scrollY: 40, expected: ['|', '|', '|', '|', '#'].join('\n')}, 87 | {scrollY: 49, expected: ['|', '|', '|', '|', '#'].join('\n')}, 88 | {scrollY: 50, expected: ['|', '|', '|', '|', '#'].join('\n')}, 89 | {scrollY: 99, expected: ['|', '|', '|', '|', '#'].join('\n')}, 90 | ].forEach(function({scrollY, expected}) { 91 | it(`scrollY=${scrollY}`, function() { 92 | const result = placeScrollBar(matrix, elements, scrollY, trackElementBody, thumbElementBody); 93 | assert.strictEqual( 94 | renderMatrix(result.matrix, '.'), 95 | expected 96 | ); 97 | }); 98 | }); 99 | }); 100 | 101 | describe('when the height of scroll bar is not 1', function() { 102 | const matrix = createMatrix({width: 1, height: 5}); 103 | const content = '\n'.repeat(7); // 8 rows 104 | const elements = parseContent(content, c => 1); 105 | 106 | [ 107 | {scrollY: 0, expected: ['#', '#', '#', '#', '|'].join('\n')}, 108 | {scrollY: 1, expected: ['#', '#', '#', '#', '|'].join('\n')}, 109 | {scrollY: 2, expected: ['|', '#', '#', '#', '#'].join('\n')}, 110 | {scrollY: 3, expected: ['|', '#', '#', '#', '#'].join('\n')}, 111 | {scrollY: 4, expected: ['|', '#', '#', '#', '#'].join('\n')}, 112 | ].forEach(function({scrollY, expected}) { 113 | it(`scrollY=${scrollY}`, function() { 114 | const result = placeScrollBar(matrix, elements, scrollY, trackElementBody, thumbElementBody); 115 | assert.strictEqual( 116 | renderMatrix(result.matrix, '.'), 117 | expected 118 | ); 119 | }); 120 | }); 121 | }); 122 | }); 123 | }); 124 | }); 125 | -------------------------------------------------------------------------------- /test/utils.ts: -------------------------------------------------------------------------------- 1 | import * as assert from 'assert'; 2 | import * as util from 'util'; 3 | 4 | import { 5 | validateSize, 6 | } from '../src/utils'; 7 | 8 | describe('utils', function() { 9 | describe('validateSize', function() { 10 | [ 11 | {subject: {width: 0, height: 0}, expected: true}, 12 | {subject: {width: 1, height: 0}, expected: true}, 13 | {subject: {width: 0, height: 1}, expected: true}, 14 | {subject: {width: -1, height: 0}, expected: false}, 15 | {subject: {width: 0, height: -1}, expected: false}, 16 | {subject: {width: 0.1, height: 0}, expected: false}, 17 | {subject: {width: 0, height: 0.1}, expected: false}, 18 | {subject: {width: -0.1, height: 0}, expected: false}, 19 | {subject: {width: 0, height: -0.1}, expected: false}, 20 | ].forEach(({subject, expected}) => { 21 | it(`${util.inspect(subject)} -> ${expected}`, function() { 22 | assert.strictEqual(validateSize(subject), expected); 23 | }); 24 | }); 25 | }); 26 | }); 27 | -------------------------------------------------------------------------------- /tsconfigs/base.json: -------------------------------------------------------------------------------- 1 | { 2 | "compilerOptions": { 3 | /* Basic Options */ 4 | "jsx": "preserve", 5 | "lib": [ 6 | "es2018" 7 | ], 8 | "module": "commonjs", 9 | "newLine": "lf", 10 | "target": "es5", 11 | /* Strict Type-Checking Options */ 12 | "strict": true, 13 | /* Additional Checks */ 14 | "noFallthroughCasesInSwitch": true, 15 | "noImplicitReturns": true 16 | } 17 | } 18 | -------------------------------------------------------------------------------- /tsconfigs/build.json: -------------------------------------------------------------------------------- 1 | { 2 | "extends": "./base.json", 3 | "compilerOptions": { 4 | "declaration": true, 5 | "outDir": "../dist" 6 | }, 7 | "include": [ 8 | "../src" 9 | ] 10 | } 11 | -------------------------------------------------------------------------------- /tsconfigs/test.json: -------------------------------------------------------------------------------- 1 | { 2 | "extends": "./base.json", 3 | "compilerOptions": { 4 | "noEmit": true 5 | }, 6 | "include": [ 7 | "../src", 8 | "../test" 9 | ] 10 | } 11 | --------------------------------------------------------------------------------