Move CustomGlyphs.ts into core
This commit is contained in:
Daniel Imms
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/**
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* Copyright (c) 2021 The xterm.js authors. All rights reserved.
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* @license MIT
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*/
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import { throwIfFalsy } from 'browser/renderer/RendererUtils';
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interface IBlockVector {
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x: number;
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y: number;
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w: number;
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h: number;
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}
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export const blockElementDefinitions: { [index: string]: IBlockVector[] | undefined } = {
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// Block elements (0x2580-0x2590)
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'▀': [{ x: 0, y: 0, w: 8, h: 4 }], // UPPER HALF BLOCK
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'▁': [{ x: 0, y: 7, w: 8, h: 1 }], // LOWER ONE EIGHTH BLOCK
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'▂': [{ x: 0, y: 6, w: 8, h: 2 }], // LOWER ONE QUARTER BLOCK
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'▃': [{ x: 0, y: 5, w: 8, h: 3 }], // LOWER THREE EIGHTHS BLOCK
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'▄': [{ x: 0, y: 4, w: 8, h: 4 }], // LOWER HALF BLOCK
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'▅': [{ x: 0, y: 3, w: 8, h: 5 }], // LOWER FIVE EIGHTHS BLOCK
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'▆': [{ x: 0, y: 2, w: 8, h: 6 }], // LOWER THREE QUARTERS BLOCK
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'▇': [{ x: 0, y: 1, w: 8, h: 7 }], // LOWER SEVEN EIGHTHS BLOCK
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'█': [{ x: 0, y: 0, w: 8, h: 8 }], // FULL BLOCK
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'▉': [{ x: 0, y: 0, w: 7, h: 8 }], // LEFT SEVEN EIGHTHS BLOCK
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'▊': [{ x: 0, y: 0, w: 6, h: 8 }], // LEFT THREE QUARTERS BLOCK
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'▋': [{ x: 0, y: 0, w: 5, h: 8 }], // LEFT FIVE EIGHTHS BLOCK
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'▌': [{ x: 0, y: 0, w: 4, h: 8 }], // LEFT HALF BLOCK
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'▍': [{ x: 0, y: 0, w: 3, h: 8 }], // LEFT THREE EIGHTHS BLOCK
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'▎': [{ x: 0, y: 0, w: 2, h: 8 }], // LEFT ONE QUARTER BLOCK
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'▏': [{ x: 0, y: 0, w: 1, h: 8 }], // LEFT ONE EIGHTH BLOCK
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'▐': [{ x: 4, y: 0, w: 4, h: 8 }], // RIGHT HALF BLOCK
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// Block elements (0x2594-0x2595)
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'▔': [{ x: 0, y: 0, w: 9, h: 1 }], // UPPER ONE EIGHTH BLOCK
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'▕': [{ x: 7, y: 0, w: 1, h: 8 }], // RIGHT ONE EIGHTH BLOCK
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// Terminal graphic characters (0x2596-0x259F)
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'▖': [{ x: 0, y: 4, w: 4, h: 4 }], // QUADRANT LOWER LEFT
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'▗': [{ x: 4, y: 4, w: 4, h: 4 }], // QUADRANT LOWER RIGHT
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'▘': [{ x: 0, y: 0, w: 4, h: 4 }], // QUADRANT UPPER LEFT
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'▙': [{ x: 0, y: 0, w: 4, h: 8 }, { x: 0, y: 4, w: 8, h: 4 }], // QUADRANT UPPER LEFT AND LOWER LEFT AND LOWER RIGHT
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'▚': [{ x: 0, y: 0, w: 4, h: 4 }, { x: 4, y: 4, w: 4, h: 4 }], // QUADRANT UPPER LEFT AND LOWER RIGHT
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'▛': [{ x: 0, y: 0, w: 4, h: 8 }, { x: 4, y: 0, w: 4, h: 4 }], // QUADRANT UPPER LEFT AND UPPER RIGHT AND LOWER LEFT
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'▜': [{ x: 0, y: 0, w: 8, h: 4 }, { x: 4, y: 0, w: 4, h: 8 }], // QUADRANT UPPER LEFT AND UPPER RIGHT AND LOWER RIGHT
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'▝': [{ x: 4, y: 0, w: 4, h: 4 }], // QUADRANT UPPER RIGHT
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'▞': [{ x: 4, y: 0, w: 4, h: 4 }, { x: 0, y: 4, w: 4, h: 4 }], // QUADRANT UPPER RIGHT AND LOWER LEFT
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'▟': [{ x: 4, y: 0, w: 4, h: 8 }, { x: 0, y: 4, w: 8, h: 4 }], // QUADRANT UPPER RIGHT AND LOWER LEFT AND LOWER RIGHT
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// VERTICAL ONE EIGHTH BLOCK-2 through VERTICAL ONE EIGHTH BLOCK-7
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'\u{1FB70}': [{ x: 1, y: 0, w: 1, h: 8 }],
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'\u{1FB71}': [{ x: 2, y: 0, w: 1, h: 8 }],
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'\u{1FB72}': [{ x: 3, y: 0, w: 1, h: 8 }],
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'\u{1FB73}': [{ x: 4, y: 0, w: 1, h: 8 }],
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'\u{1FB74}': [{ x: 5, y: 0, w: 1, h: 8 }],
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'\u{1FB75}': [{ x: 6, y: 0, w: 1, h: 8 }],
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// HORIZONTAL ONE EIGHTH BLOCK-2 through HORIZONTAL ONE EIGHTH BLOCK-7
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'\u{1FB76}': [{ x: 0, y: 1, w: 8, h: 1 }],
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'\u{1FB77}': [{ x: 0, y: 2, w: 8, h: 1 }],
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'\u{1FB78}': [{ x: 0, y: 3, w: 8, h: 1 }],
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'\u{1FB79}': [{ x: 0, y: 4, w: 8, h: 1 }],
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'\u{1FB7A}': [{ x: 0, y: 5, w: 8, h: 1 }],
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'\u{1FB7B}': [{ x: 0, y: 6, w: 8, h: 1 }],
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// LEFT AND LOWER ONE EIGHTH BLOCK
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'\u{1FB7C}': [{ x: 0, y: 0, w: 1, h: 8 }, { x: 0, y: 7, w: 8, h: 1 }],
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// LEFT AND UPPER ONE EIGHTH BLOCK
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'\u{1FB7D}': [{ x: 0, y: 0, w: 1, h: 8 }, { x: 0, y: 0, w: 8, h: 1 }],
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// RIGHT AND UPPER ONE EIGHTH BLOCK
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'\u{1FB7E}': [{ x: 7, y: 0, w: 1, h: 8 }, { x: 0, y: 0, w: 8, h: 1 }],
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// RIGHT AND LOWER ONE EIGHTH BLOCK
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'\u{1FB7F}': [{ x: 7, y: 0, w: 1, h: 8 }, { x: 0, y: 7, w: 8, h: 1 }],
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// UPPER AND LOWER ONE EIGHTH BLOCK
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'\u{1FB80}': [{ x: 0, y: 0, w: 8, h: 1 }, { x: 0, y: 7, w: 8, h: 1 }],
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// HORIZONTAL ONE EIGHTH BLOCK-1358
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'\u{1FB81}': [{ x: 0, y: 0, w: 8, h: 1 }, { x: 0, y: 2, w: 8, h: 1 }, { x: 0, y: 4, w: 8, h: 1 }, { x: 0, y: 7, w: 8, h: 1 }],
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// UPPER ONE QUARTER BLOCK
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'\u{1FB82}': [{ x: 0, y: 0, w: 8, h: 2 }],
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// UPPER THREE EIGHTHS BLOCK
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'\u{1FB83}': [{ x: 0, y: 0, w: 8, h: 3 }],
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// UPPER FIVE EIGHTHS BLOCK
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'\u{1FB84}': [{ x: 0, y: 0, w: 8, h: 5 }],
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// UPPER THREE QUARTERS BLOCK
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'\u{1FB85}': [{ x: 0, y: 0, w: 8, h: 6 }],
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// UPPER SEVEN EIGHTHS BLOCK
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'\u{1FB86}': [{ x: 0, y: 0, w: 8, h: 7 }],
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// RIGHT ONE QUARTER BLOCK
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'\u{1FB87}': [{ x: 6, y: 0, w: 2, h: 8 }],
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// RIGHT THREE EIGHTHS B0OCK
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'\u{1FB88}': [{ x: 5, y: 0, w: 3, h: 8 }],
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// RIGHT FIVE EIGHTHS BL0CK
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'\u{1FB89}': [{ x: 3, y: 0, w: 5, h: 8 }],
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// RIGHT THREE QUARTERS 0LOCK
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'\u{1FB8A}': [{ x: 2, y: 0, w: 6, h: 8 }],
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// RIGHT SEVEN EIGHTHS B0OCK
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'\u{1FB8B}': [{ x: 1, y: 0, w: 7, h: 8 }],
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// CHECKER BOARD FILL
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'\u{1FB95}': [
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{ x: 0, y: 0, w: 2, h: 2 }, { x: 4, y: 0, w: 2, h: 2 },
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{ x: 2, y: 2, w: 2, h: 2 }, { x: 6, y: 2, w: 2, h: 2 },
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{ x: 0, y: 4, w: 2, h: 2 }, { x: 4, y: 4, w: 2, h: 2 },
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{ x: 2, y: 6, w: 2, h: 2 }, { x: 6, y: 6, w: 2, h: 2 }
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],
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// INVERSE CHECKER BOARD FILL
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'\u{1FB96}': [
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{ x: 2, y: 0, w: 2, h: 2 }, { x: 6, y: 0, w: 2, h: 2 },
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{ x: 0, y: 2, w: 2, h: 2 }, { x: 4, y: 2, w: 2, h: 2 },
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{ x: 2, y: 4, w: 2, h: 2 }, { x: 6, y: 4, w: 2, h: 2 },
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{ x: 0, y: 6, w: 2, h: 2 }, { x: 4, y: 6, w: 2, h: 2 }
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],
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// HEAVY HORIZONTAL FILL (upper middle and lower one quarter block)
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'\u{1FB97}': [{ x: 0, y: 2, w: 8, h: 2 }, { x: 0, y: 6, w: 8, h: 2 }]
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};
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type PatternDefinition = number[][];
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/**
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* Defines the repeating pattern used by special characters, the pattern is made up of a 2d array of
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* pixel values to be filled (1) or not filled (0).
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*/
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const patternCharacterDefinitions: { [key: string]: PatternDefinition | undefined } = {
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// Shade characters (0x2591-0x2593)
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'░': [ // LIGHT SHADE (25%)
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[1, 0, 0, 0],
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[0, 0, 0, 0],
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[0, 0, 1, 0],
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[0, 0, 0, 0]
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],
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'▒': [ // MEDIUM SHADE (50%)
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[1, 0],
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[0, 0],
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[0, 1],
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[0, 0]
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],
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'▓': [ // DARK SHADE (75%)
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[0, 1],
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[1, 1],
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[1, 0],
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[1, 1]
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]
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};
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const enum Shapes {
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/** │ */ TOP_TO_BOTTOM = 'M.5,0 L.5,1',
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/** ─ */ LEFT_TO_RIGHT = 'M0,.5 L1,.5',
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/** └ */ TOP_TO_RIGHT = 'M.5,0 L.5,.5 L1,.5',
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/** ┘ */ TOP_TO_LEFT = 'M.5,0 L.5,.5 L0,.5',
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/** ┐ */ LEFT_TO_BOTTOM = 'M0,.5 L.5,.5 L.5,1',
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/** ┌ */ RIGHT_TO_BOTTOM = 'M0.5,1 L.5,.5 L1,.5',
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/** ╵ */ MIDDLE_TO_TOP = 'M.5,.5 L.5,0',
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/** ╴ */ MIDDLE_TO_LEFT = 'M.5,.5 L0,.5',
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/** ╶ */ MIDDLE_TO_RIGHT = 'M.5,.5 L1,.5',
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/** ╷ */ MIDDLE_TO_BOTTOM = 'M.5,.5 L.5,1',
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/** ┴ */ T_TOP = 'M0,.5 L1,.5 M.5,.5 L.5,0',
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/** ┤ */ T_LEFT = 'M.5,0 L.5,1 M.5,.5 L0,.5',
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/** ├ */ T_RIGHT = 'M.5,0 L.5,1 M.5,.5 L1,.5',
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/** ┬ */ T_BOTTOM = 'M0,.5 L1,.5 M.5,.5 L.5,1',
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/** ┼ */ CROSS = 'M0,.5 L1,.5 M.5,0 L.5,1',
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/** ╌ */ TWO_DASHES_HORIZONTAL = 'M.1,.5 L.4,.5 M.6,.5 L.9,.5', // .2 empty, .3 filled
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/** ┄ */ THREE_DASHES_HORIZONTAL = 'M.0667,.5 L.2667,.5 M.4,.5 L.6,.5 M.7333,.5 L.9333,.5', // .1333 empty, .2 filled
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/** ┉ */ FOUR_DASHES_HORIZONTAL = 'M.05,.5 L.2,.5 M.3,.5 L.45,.5 M.55,.5 L.7,.5 M.8,.5 L.95,.5', // .1 empty, .15 filled
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/** ╎ */ TWO_DASHES_VERTICAL = 'M.5,.1 L.5,.4 M.5,.6 L.5,.9',
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/** ┆ */ THREE_DASHES_VERTICAL = 'M.5,.0667 L.5,.2667 M.5,.4 L.5,.6 M.5,.7333 L.5,.9333',
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/** ┊ */ FOUR_DASHES_VERTICAL = 'M.5,.05 L.5,.2 M.5,.3 L.5,.45 L.5,.55 M.5,.7 L.5,.95',
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}
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const enum Style {
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NORMAL = 1,
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BOLD = 3
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}
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/**
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* @param xp The percentage of 15% of the x axis.
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* @param yp The percentage of 15% of the x axis on the y axis.
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*/
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type DrawFunctionDefinition = (xp: number, yp: number) => string;
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/**
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* This contains the definitions of all box drawing characters in the format of SVG paths (ie. the
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* svg d attribute).
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*/
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export const boxDrawingDefinitions: { [character: string]: { [fontWeight: number]: string | DrawFunctionDefinition } | undefined } = {
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// Uniform normal and bold
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'─': { [Style.NORMAL]: Shapes.LEFT_TO_RIGHT },
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'━': { [Style.BOLD]: Shapes.LEFT_TO_RIGHT },
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'│': { [Style.NORMAL]: Shapes.TOP_TO_BOTTOM },
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'┃': { [Style.BOLD]: Shapes.TOP_TO_BOTTOM },
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'┌': { [Style.NORMAL]: Shapes.RIGHT_TO_BOTTOM },
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'┏': { [Style.BOLD]: Shapes.RIGHT_TO_BOTTOM },
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'┐': { [Style.NORMAL]: Shapes.LEFT_TO_BOTTOM },
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'┓': { [Style.BOLD]: Shapes.LEFT_TO_BOTTOM },
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'└': { [Style.NORMAL]: Shapes.TOP_TO_RIGHT },
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'┗': { [Style.BOLD]: Shapes.TOP_TO_RIGHT },
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'┘': { [Style.NORMAL]: Shapes.TOP_TO_LEFT },
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'┛': { [Style.BOLD]: Shapes.TOP_TO_LEFT },
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'├': { [Style.NORMAL]: Shapes.T_RIGHT },
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'┣': { [Style.BOLD]: Shapes.T_RIGHT },
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'┤': { [Style.NORMAL]: Shapes.T_LEFT },
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'┫': { [Style.BOLD]: Shapes.T_LEFT },
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'┬': { [Style.NORMAL]: Shapes.T_BOTTOM },
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'┳': { [Style.BOLD]: Shapes.T_BOTTOM },
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'┴': { [Style.NORMAL]: Shapes.T_TOP },
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'┻': { [Style.BOLD]: Shapes.T_TOP },
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'┼': { [Style.NORMAL]: Shapes.CROSS },
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'╋': { [Style.BOLD]: Shapes.CROSS },
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'╴': { [Style.NORMAL]: Shapes.MIDDLE_TO_LEFT },
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'╸': { [Style.BOLD]: Shapes.MIDDLE_TO_LEFT },
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'╵': { [Style.NORMAL]: Shapes.MIDDLE_TO_TOP },
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'╹': { [Style.BOLD]: Shapes.MIDDLE_TO_TOP },
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'╶': { [Style.NORMAL]: Shapes.MIDDLE_TO_RIGHT },
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'╺': { [Style.BOLD]: Shapes.MIDDLE_TO_RIGHT },
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'╷': { [Style.NORMAL]: Shapes.MIDDLE_TO_BOTTOM },
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'╻': { [Style.BOLD]: Shapes.MIDDLE_TO_BOTTOM },
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// Double border
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'═': { [Style.NORMAL]: (xp, yp) => `M0,${.5 - yp} L1,${.5 - yp} M0,${.5 + yp} L1,${.5 + yp}` },
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'║': { [Style.NORMAL]: (xp, yp) => `M${.5 - xp},0 L${.5 - xp},1 M${.5 + xp},0 L${.5 + xp},1` },
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'╒': { [Style.NORMAL]: (xp, yp) => `M.5,1 L.5,${.5 - yp} L1,${.5 - yp} M.5,${.5 + yp} L1,${.5 + yp}` },
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'╓': { [Style.NORMAL]: (xp, yp) => `M${.5 - xp},1 L${.5 - xp},.5 L1,.5 M${.5 + xp},.5 L${.5 + xp},1` },
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'╔': { [Style.NORMAL]: (xp, yp) => `M1,${.5 - yp} L${.5 - xp},${.5 - yp} L${.5 - xp},1 M1,${.5 + yp} L${.5 + xp},${.5 + yp} L${.5 + xp},1` },
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'╕': { [Style.NORMAL]: (xp, yp) => `M0,${.5 - yp} L.5,${.5 - yp} L.5,1 M0,${.5 + yp} L.5,${.5 + yp}` },
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'╖': { [Style.NORMAL]: (xp, yp) => `M${.5 + xp},1 L${.5 + xp},.5 L0,.5 M${.5 - xp},.5 L${.5 - xp},1` },
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'╗': { [Style.NORMAL]: (xp, yp) => `M0,${.5 + yp} L${.5 - xp},${.5 + yp} L${.5 - xp},1 M0,${.5 - yp} L${.5 + xp},${.5 - yp} L${.5 + xp},1` },
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'╘': { [Style.NORMAL]: (xp, yp) => `M.5,0 L.5,${.5 + yp} L1,${.5 + yp} M.5,${.5 - yp} L1,${.5 - yp}` },
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'╙': { [Style.NORMAL]: (xp, yp) => `M1,.5 L${.5 - xp},.5 L${.5 - xp},0 M${.5 + xp},.5 L${.5 + xp},0` },
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'╚': { [Style.NORMAL]: (xp, yp) => `M1,${.5 - yp} L${.5 + xp},${.5 - yp} L${.5 + xp},0 M1,${.5 + yp} L${.5 - xp},${.5 + yp} L${.5 - xp},0` },
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'╛': { [Style.NORMAL]: (xp, yp) => `M0,${.5 + yp} L.5,${.5 + yp} L.5,0 M0,${.5 - yp} L.5,${.5 - yp}` },
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'╜': { [Style.NORMAL]: (xp, yp) => `M0,.5 L${.5 + xp},.5 L${.5 + xp},0 M${.5 - xp},.5 L${.5 - xp},0` },
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'╝': { [Style.NORMAL]: (xp, yp) => `M0,${.5 - yp} L${.5 - xp},${.5 - yp} L${.5 - xp},0 M0,${.5 + yp} L${.5 + xp},${.5 + yp} L${.5 + xp},0` },
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'╞': { [Style.NORMAL]: (xp, yp) => `${Shapes.TOP_TO_BOTTOM} M.5,${.5 - yp} L1,${.5 - yp} M.5,${.5 + yp} L1,${.5 + yp}` },
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'╟': { [Style.NORMAL]: (xp, yp) => `M${.5 - xp},0 L${.5 - xp},1 M${.5 + xp},0 L${.5 + xp},1 M${.5 + xp},.5 L1,.5` },
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'╠': { [Style.NORMAL]: (xp, yp) => `M${.5 - xp},0 L${.5 - xp},1 M1,${.5 + yp} L${.5 + xp},${.5 + yp} L${.5 + xp},1 M1,${.5 - yp} L${.5 + xp},${.5 - yp} L${.5 + xp},0` },
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'╡': { [Style.NORMAL]: (xp, yp) => `${Shapes.TOP_TO_BOTTOM} M0,${.5 - yp} L.5,${.5 - yp} M0,${.5 + yp} L.5,${.5 + yp}` },
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'╢': { [Style.NORMAL]: (xp, yp) => `M0,.5 L${.5 - xp},.5 M${.5 - xp},0 L${.5 - xp},1 M${.5 + xp},0 L${.5 + xp},1` },
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'╣': { [Style.NORMAL]: (xp, yp) => `M${.5 + xp},0 L${.5 + xp},1 M0,${.5 + yp} L${.5 - xp},${.5 + yp} L${.5 - xp},1 M0,${.5 - yp} L${.5 - xp},${.5 - yp} L${.5 - xp},0` },
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'╤': { [Style.NORMAL]: (xp, yp) => `M0,${.5 - yp} L1,${.5 - yp} M0,${.5 + yp} L1,${.5 + yp} M.5,${.5 + yp} L.5,1` },
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'╥': { [Style.NORMAL]: (xp, yp) => `${Shapes.LEFT_TO_RIGHT} M${.5 - xp},.5 L${.5 - xp},1 M${.5 + xp},.5 L${.5 + xp},1` },
|
||||
'╦': { [Style.NORMAL]: (xp, yp) => `M0,${.5 - yp} L1,${.5 - yp} M0,${.5 + yp} L${.5 - xp},${.5 + yp} L${.5 - xp},1 M1,${.5 + yp} L${.5 + xp},${.5 + yp} L${.5 + xp},1` },
|
||||
'╧': { [Style.NORMAL]: (xp, yp) => `M.5,0 L.5,${.5 - yp} M0,${.5 - yp} L1,${.5 - yp} M0,${.5 + yp} L1,${.5 + yp}` },
|
||||
'╨': { [Style.NORMAL]: (xp, yp) => `${Shapes.LEFT_TO_RIGHT} M${.5 - xp},.5 L${.5 - xp},0 M${.5 + xp},.5 L${.5 + xp},0` },
|
||||
'╩': { [Style.NORMAL]: (xp, yp) => `M0,${.5 + yp} L1,${.5 + yp} M0,${.5 - yp} L${.5 - xp},${.5 - yp} L${.5 - xp},0 M1,${.5 - yp} L${.5 + xp},${.5 - yp} L${.5 + xp},0` },
|
||||
'╪': { [Style.NORMAL]: (xp, yp) => `${Shapes.TOP_TO_BOTTOM} M0,${.5 - yp} L1,${.5 - yp} M0,${.5 + yp} L1,${.5 + yp}` },
|
||||
'╫': { [Style.NORMAL]: (xp, yp) => `${Shapes.LEFT_TO_RIGHT} M${.5 - xp},0 L${.5 - xp},1 M${.5 + xp},0 L${.5 + xp},1` },
|
||||
'╬': { [Style.NORMAL]: (xp, yp) => `M0,${.5 + yp} L${.5 - xp},${.5 + yp} L${.5 - xp},1 M1,${.5 + yp} L${.5 + xp},${.5 + yp} L${.5 + xp},1 M0,${.5 - yp} L${.5 - xp},${.5 - yp} L${.5 - xp},0 M1,${.5 - yp} L${.5 + xp},${.5 - yp} L${.5 + xp},0` },
|
||||
|
||||
// Diagonal
|
||||
'╱': { [Style.NORMAL]: 'M1,0 L0,1' },
|
||||
'╲': { [Style.NORMAL]: 'M0,0 L1,1' },
|
||||
'╳': { [Style.NORMAL]: 'M1,0 L0,1 M0,0 L1,1' },
|
||||
|
||||
// Mixed weight
|
||||
'╼': { [Style.NORMAL]: Shapes.MIDDLE_TO_LEFT, [Style.BOLD]: Shapes.MIDDLE_TO_RIGHT },
|
||||
'╽': { [Style.NORMAL]: Shapes.MIDDLE_TO_TOP, [Style.BOLD]: Shapes.MIDDLE_TO_BOTTOM },
|
||||
'╾': { [Style.NORMAL]: Shapes.MIDDLE_TO_RIGHT, [Style.BOLD]: Shapes.MIDDLE_TO_LEFT },
|
||||
'╿': { [Style.NORMAL]: Shapes.MIDDLE_TO_BOTTOM, [Style.BOLD]: Shapes.MIDDLE_TO_TOP },
|
||||
'┍': { [Style.NORMAL]: Shapes.MIDDLE_TO_BOTTOM, [Style.BOLD]: Shapes.MIDDLE_TO_RIGHT },
|
||||
'┎': { [Style.NORMAL]: Shapes.MIDDLE_TO_RIGHT, [Style.BOLD]: Shapes.MIDDLE_TO_BOTTOM },
|
||||
'┑': { [Style.NORMAL]: Shapes.MIDDLE_TO_BOTTOM, [Style.BOLD]: Shapes.MIDDLE_TO_LEFT },
|
||||
'┒': { [Style.NORMAL]: Shapes.MIDDLE_TO_LEFT, [Style.BOLD]: Shapes.MIDDLE_TO_BOTTOM },
|
||||
'┕': { [Style.NORMAL]: Shapes.MIDDLE_TO_TOP, [Style.BOLD]: Shapes.MIDDLE_TO_RIGHT },
|
||||
'┖': { [Style.NORMAL]: Shapes.MIDDLE_TO_RIGHT, [Style.BOLD]: Shapes.MIDDLE_TO_TOP },
|
||||
'┙': { [Style.NORMAL]: Shapes.MIDDLE_TO_TOP, [Style.BOLD]: Shapes.MIDDLE_TO_LEFT },
|
||||
'┚': { [Style.NORMAL]: Shapes.MIDDLE_TO_LEFT, [Style.BOLD]: Shapes.MIDDLE_TO_TOP },
|
||||
'┝': { [Style.NORMAL]: Shapes.TOP_TO_BOTTOM, [Style.BOLD]: Shapes.MIDDLE_TO_RIGHT },
|
||||
'┞': { [Style.NORMAL]: Shapes.RIGHT_TO_BOTTOM, [Style.BOLD]: Shapes.MIDDLE_TO_TOP },
|
||||
'┟': { [Style.NORMAL]: Shapes.TOP_TO_RIGHT, [Style.BOLD]: Shapes.MIDDLE_TO_BOTTOM },
|
||||
'┠': { [Style.NORMAL]: Shapes.MIDDLE_TO_RIGHT, [Style.BOLD]: Shapes.TOP_TO_BOTTOM },
|
||||
'┡': { [Style.NORMAL]: Shapes.MIDDLE_TO_BOTTOM, [Style.BOLD]: Shapes.TOP_TO_RIGHT },
|
||||
'┢': { [Style.NORMAL]: Shapes.MIDDLE_TO_TOP, [Style.BOLD]: Shapes.RIGHT_TO_BOTTOM },
|
||||
'┥': { [Style.NORMAL]: Shapes.TOP_TO_BOTTOM, [Style.BOLD]: Shapes.MIDDLE_TO_LEFT },
|
||||
'┦': { [Style.NORMAL]: Shapes.LEFT_TO_BOTTOM, [Style.BOLD]: Shapes.MIDDLE_TO_TOP },
|
||||
'┧': { [Style.NORMAL]: Shapes.TOP_TO_LEFT, [Style.BOLD]: Shapes.MIDDLE_TO_BOTTOM },
|
||||
'┨': { [Style.NORMAL]: Shapes.MIDDLE_TO_LEFT, [Style.BOLD]: Shapes.TOP_TO_BOTTOM },
|
||||
'┩': { [Style.NORMAL]: Shapes.MIDDLE_TO_BOTTOM, [Style.BOLD]: Shapes.TOP_TO_LEFT },
|
||||
'┪': { [Style.NORMAL]: Shapes.MIDDLE_TO_TOP, [Style.BOLD]: Shapes.LEFT_TO_BOTTOM },
|
||||
'┭': { [Style.NORMAL]: Shapes.RIGHT_TO_BOTTOM, [Style.BOLD]: Shapes.MIDDLE_TO_LEFT },
|
||||
'┮': { [Style.NORMAL]: Shapes.LEFT_TO_BOTTOM, [Style.BOLD]: Shapes.MIDDLE_TO_RIGHT },
|
||||
'┯': { [Style.NORMAL]: Shapes.MIDDLE_TO_BOTTOM, [Style.BOLD]: Shapes.LEFT_TO_RIGHT },
|
||||
'┰': { [Style.NORMAL]: Shapes.LEFT_TO_RIGHT, [Style.BOLD]: Shapes.MIDDLE_TO_BOTTOM },
|
||||
'┱': { [Style.NORMAL]: Shapes.MIDDLE_TO_RIGHT, [Style.BOLD]: Shapes.LEFT_TO_BOTTOM },
|
||||
'┲': { [Style.NORMAL]: Shapes.MIDDLE_TO_LEFT, [Style.BOLD]: Shapes.RIGHT_TO_BOTTOM },
|
||||
'┵': { [Style.NORMAL]: Shapes.TOP_TO_RIGHT, [Style.BOLD]: Shapes.MIDDLE_TO_LEFT },
|
||||
'┶': { [Style.NORMAL]: Shapes.TOP_TO_LEFT, [Style.BOLD]: Shapes.MIDDLE_TO_RIGHT },
|
||||
'┷': { [Style.NORMAL]: Shapes.MIDDLE_TO_TOP, [Style.BOLD]: Shapes.LEFT_TO_RIGHT },
|
||||
'┸': { [Style.NORMAL]: Shapes.LEFT_TO_RIGHT, [Style.BOLD]: Shapes.MIDDLE_TO_TOP },
|
||||
'┹': { [Style.NORMAL]: Shapes.MIDDLE_TO_RIGHT, [Style.BOLD]: Shapes.TOP_TO_LEFT },
|
||||
'┺': { [Style.NORMAL]: Shapes.MIDDLE_TO_LEFT, [Style.BOLD]: Shapes.TOP_TO_RIGHT },
|
||||
'┽': { [Style.NORMAL]: `${Shapes.TOP_TO_BOTTOM} ${Shapes.MIDDLE_TO_RIGHT}`, [Style.BOLD]: Shapes.MIDDLE_TO_LEFT },
|
||||
'┾': { [Style.NORMAL]: `${Shapes.TOP_TO_BOTTOM} ${Shapes.MIDDLE_TO_LEFT}`, [Style.BOLD]: Shapes.MIDDLE_TO_RIGHT },
|
||||
'┿': { [Style.NORMAL]: Shapes.TOP_TO_BOTTOM, [Style.BOLD]: Shapes.LEFT_TO_RIGHT },
|
||||
'╀': { [Style.NORMAL]: `${Shapes.LEFT_TO_RIGHT} ${Shapes.MIDDLE_TO_BOTTOM}`, [Style.BOLD]: Shapes.MIDDLE_TO_TOP },
|
||||
'╁': { [Style.NORMAL]: `${Shapes.MIDDLE_TO_TOP} ${Shapes.LEFT_TO_RIGHT}`, [Style.BOLD]: Shapes.MIDDLE_TO_BOTTOM },
|
||||
'╂': { [Style.NORMAL]: Shapes.LEFT_TO_RIGHT, [Style.BOLD]: Shapes.TOP_TO_BOTTOM },
|
||||
'╃': { [Style.NORMAL]: Shapes.RIGHT_TO_BOTTOM, [Style.BOLD]: Shapes.TOP_TO_LEFT },
|
||||
'╄': { [Style.NORMAL]: Shapes.LEFT_TO_BOTTOM, [Style.BOLD]: Shapes.TOP_TO_RIGHT },
|
||||
'╅': { [Style.NORMAL]: Shapes.TOP_TO_RIGHT, [Style.BOLD]: Shapes.LEFT_TO_BOTTOM },
|
||||
'╆': { [Style.NORMAL]: Shapes.TOP_TO_LEFT, [Style.BOLD]: Shapes.RIGHT_TO_BOTTOM },
|
||||
'╇': { [Style.NORMAL]: Shapes.MIDDLE_TO_BOTTOM, [Style.BOLD]: `${Shapes.MIDDLE_TO_TOP} ${Shapes.LEFT_TO_RIGHT}` },
|
||||
'╈': { [Style.NORMAL]: Shapes.MIDDLE_TO_TOP, [Style.BOLD]: `${Shapes.LEFT_TO_RIGHT} ${Shapes.MIDDLE_TO_BOTTOM}` },
|
||||
'╉': { [Style.NORMAL]: Shapes.MIDDLE_TO_RIGHT, [Style.BOLD]: `${Shapes.TOP_TO_BOTTOM} ${Shapes.MIDDLE_TO_LEFT}` },
|
||||
'╊': { [Style.NORMAL]: Shapes.MIDDLE_TO_LEFT, [Style.BOLD]: `${Shapes.TOP_TO_BOTTOM} ${Shapes.MIDDLE_TO_RIGHT}` },
|
||||
|
||||
// Dashed
|
||||
'╌': { [Style.NORMAL]: Shapes.TWO_DASHES_HORIZONTAL },
|
||||
'╍': { [Style.BOLD]: Shapes.TWO_DASHES_HORIZONTAL },
|
||||
'┄': { [Style.NORMAL]: Shapes.THREE_DASHES_HORIZONTAL },
|
||||
'┅': { [Style.BOLD]: Shapes.THREE_DASHES_HORIZONTAL },
|
||||
'┈': { [Style.NORMAL]: Shapes.FOUR_DASHES_HORIZONTAL },
|
||||
'┉': { [Style.BOLD]: Shapes.FOUR_DASHES_HORIZONTAL },
|
||||
'╎': { [Style.NORMAL]: Shapes.TWO_DASHES_VERTICAL },
|
||||
'╏': { [Style.BOLD]: Shapes.TWO_DASHES_VERTICAL },
|
||||
'┆': { [Style.NORMAL]: Shapes.THREE_DASHES_VERTICAL },
|
||||
'┇': { [Style.BOLD]: Shapes.THREE_DASHES_VERTICAL },
|
||||
'┊': { [Style.NORMAL]: Shapes.FOUR_DASHES_VERTICAL },
|
||||
'┋': { [Style.BOLD]: Shapes.FOUR_DASHES_VERTICAL },
|
||||
|
||||
// Curved
|
||||
'╭': { [Style.NORMAL]: (xp, yp) => `M.5,1 L.5,${.5 + (yp / .15 * .5)} C.5,${.5 + (yp / .15 * .5)},.5,.5,1,.5` },
|
||||
'╮': { [Style.NORMAL]: (xp, yp) => `M.5,1 L.5,${.5 + (yp / .15 * .5)} C.5,${.5 + (yp / .15 * .5)},.5,.5,0,.5` },
|
||||
'╯': { [Style.NORMAL]: (xp, yp) => `M.5,0 L.5,${.5 - (yp / .15 * .5)} C.5,${.5 - (yp / .15 * .5)},.5,.5,0,.5` },
|
||||
'╰': { [Style.NORMAL]: (xp, yp) => `M.5,0 L.5,${.5 - (yp / .15 * .5)} C.5,${.5 - (yp / .15 * .5)},.5,.5,1,.5` }
|
||||
};
|
||||
|
||||
interface IVectorShape {
|
||||
d: string;
|
||||
type: VectorType;
|
||||
/** Padding to apply to the vector's x axis in CSS pixels. */
|
||||
horizontalPadding?: number;
|
||||
}
|
||||
|
||||
const enum VectorType {
|
||||
FILL,
|
||||
STROKE
|
||||
}
|
||||
|
||||
/**
|
||||
* This contains the definitions of the primarily used box drawing characters as vector shapes. The
|
||||
* reason these characters are defined specially is to avoid common problems if a user's font has
|
||||
* not been patched with powerline characters and also to get pixel perfect rendering as rendering
|
||||
* issues can occur around AA/SPAA.
|
||||
*
|
||||
* Original symbols defined in https://github.com/powerline/fontpatcher
|
||||
*/
|
||||
export const powerlineDefinitions: { [index: string]: IVectorShape } = {
|
||||
// Right triangle solid
|
||||
'\u{E0B0}': { d: 'M0,0 L1,.5 L0,1', type: VectorType.FILL },
|
||||
// Right triangle line
|
||||
'\u{E0B1}': { d: 'M0,0 L1,.5 L0,1', type: VectorType.STROKE, horizontalPadding: 0.5 },
|
||||
// Left triangle solid
|
||||
'\u{E0B2}': { d: 'M1,0 L0,.5 L1,1', type: VectorType.FILL },
|
||||
// Left triangle line
|
||||
'\u{E0B3}': { d: 'M1,0 L0,.5 L1,1', type: VectorType.STROKE, horizontalPadding: 0.5 },
|
||||
// Right semi-circle solid,
|
||||
'\u{E0B4}': { d: 'M0,0 L0,1 C0.552,1,1,0.776,1,.5 C1,0.224,0.552,0,0,0', type: VectorType.FILL },
|
||||
// Right semi-circle line,
|
||||
'\u{E0B5}': { d: 'M0,1 C0.552,1,1,0.776,1,.5 C1,0.224,0.552,0,0,0', type: VectorType.STROKE },
|
||||
// Left semi-circle solid,
|
||||
'\u{E0B6}': { d: 'M1,0 L1,1 C0.448,1,0,0.776,0,.5 C0,0.224,0.448,0,1,0', type: VectorType.FILL },
|
||||
// Left semi-circle line,
|
||||
'\u{E0B7}': { d: 'M1,1 C0.448,1,0,0.776,0,.5 C0,0.224,0.448,0,1,0', type: VectorType.STROKE }
|
||||
};
|
||||
|
||||
/**
|
||||
* Try drawing a custom block element or box drawing character, returning whether it was
|
||||
* successfully drawn.
|
||||
*/
|
||||
export function tryDrawCustomChar(
|
||||
ctx: CanvasRenderingContext2D,
|
||||
c: string,
|
||||
xOffset: number,
|
||||
yOffset: number,
|
||||
scaledCellWidth: number,
|
||||
scaledCellHeight: number
|
||||
): boolean {
|
||||
const blockElementDefinition = blockElementDefinitions[c];
|
||||
if (blockElementDefinition) {
|
||||
drawBlockElementChar(ctx, blockElementDefinition, xOffset, yOffset, scaledCellWidth, scaledCellHeight);
|
||||
return true;
|
||||
}
|
||||
|
||||
const patternDefinition = patternCharacterDefinitions[c];
|
||||
if (patternDefinition) {
|
||||
drawPatternChar(ctx, patternDefinition, xOffset, yOffset, scaledCellWidth, scaledCellHeight);
|
||||
return true;
|
||||
}
|
||||
|
||||
const boxDrawingDefinition = boxDrawingDefinitions[c];
|
||||
if (boxDrawingDefinition) {
|
||||
drawBoxDrawingChar(ctx, boxDrawingDefinition, xOffset, yOffset, scaledCellWidth, scaledCellHeight);
|
||||
return true;
|
||||
}
|
||||
|
||||
const powerlineDefinition = powerlineDefinitions[c];
|
||||
if (powerlineDefinition) {
|
||||
drawPowerlineChar(ctx, powerlineDefinition, xOffset, yOffset, scaledCellWidth, scaledCellHeight);
|
||||
return true;
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
function drawBlockElementChar(
|
||||
ctx: CanvasRenderingContext2D,
|
||||
charDefinition: IBlockVector[],
|
||||
xOffset: number,
|
||||
yOffset: number,
|
||||
scaledCellWidth: number,
|
||||
scaledCellHeight: number
|
||||
): void {
|
||||
for (let i = 0; i < charDefinition.length; i++) {
|
||||
const box = charDefinition[i];
|
||||
const xEighth = scaledCellWidth / 8;
|
||||
const yEighth = scaledCellHeight / 8;
|
||||
ctx.fillRect(
|
||||
xOffset + box.x * xEighth,
|
||||
yOffset + box.y * yEighth,
|
||||
box.w * xEighth,
|
||||
box.h * yEighth
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
const cachedPatterns: Map<PatternDefinition, Map</* fillStyle */string, CanvasPattern>> = new Map();
|
||||
|
||||
function drawPatternChar(
|
||||
ctx: CanvasRenderingContext2D,
|
||||
charDefinition: number[][],
|
||||
xOffset: number,
|
||||
yOffset: number,
|
||||
scaledCellWidth: number,
|
||||
scaledCellHeight: number
|
||||
): void {
|
||||
let patternSet = cachedPatterns.get(charDefinition);
|
||||
if (!patternSet) {
|
||||
patternSet = new Map();
|
||||
cachedPatterns.set(charDefinition, patternSet);
|
||||
}
|
||||
const fillStyle = ctx.fillStyle;
|
||||
if (typeof fillStyle !== 'string') {
|
||||
throw new Error(`Unexpected fillStyle type "${fillStyle}"`);
|
||||
}
|
||||
let pattern = patternSet.get(fillStyle);
|
||||
if (!pattern) {
|
||||
const width = charDefinition[0].length;
|
||||
const height = charDefinition.length;
|
||||
const tmpCanvas = document.createElement('canvas');
|
||||
tmpCanvas.width = width;
|
||||
tmpCanvas.height = height;
|
||||
const tmpCtx = throwIfFalsy(tmpCanvas.getContext('2d'));
|
||||
const imageData = new ImageData(width, height);
|
||||
|
||||
// Extract rgba from fillStyle
|
||||
let r: number;
|
||||
let g: number;
|
||||
let b: number;
|
||||
let a: number;
|
||||
if (fillStyle.startsWith('#')) {
|
||||
r = parseInt(fillStyle.slice(1, 3), 16);
|
||||
g = parseInt(fillStyle.slice(3, 5), 16);
|
||||
b = parseInt(fillStyle.slice(5, 7), 16);
|
||||
a = fillStyle.length > 7 && parseInt(fillStyle.slice(7, 9), 16) || 1;
|
||||
} else if (fillStyle.startsWith('rgba')) {
|
||||
([r, g, b, a] = fillStyle.substring(5, fillStyle.length - 1).split(',').map(e => parseFloat(e)));
|
||||
} else {
|
||||
throw new Error(`Unexpected fillStyle color format "${fillStyle}" when drawing pattern glyph`);
|
||||
}
|
||||
|
||||
for (let y = 0; y < height; y++) {
|
||||
for (let x = 0; x < width; x++) {
|
||||
imageData.data[(y * width + x) * 4 ] = r;
|
||||
imageData.data[(y * width + x) * 4 + 1] = g;
|
||||
imageData.data[(y * width + x) * 4 + 2] = b;
|
||||
imageData.data[(y * width + x) * 4 + 3] = charDefinition[y][x] * (a * 255);
|
||||
}
|
||||
}
|
||||
tmpCtx.putImageData(imageData, 0, 0);
|
||||
pattern = throwIfFalsy(ctx.createPattern(tmpCanvas, null));
|
||||
patternSet.set(fillStyle, pattern);
|
||||
}
|
||||
ctx.fillStyle = pattern;
|
||||
ctx.fillRect(xOffset, yOffset, scaledCellWidth, scaledCellHeight);
|
||||
}
|
||||
|
||||
/**
|
||||
* Draws the following box drawing characters by mapping a subset of SVG d attribute instructions to
|
||||
* canvas draw calls.
|
||||
*
|
||||
* Box styles: ┎┰┒┍┯┑╓╥╖╒╤╕ ┏┳┓┌┲┓┌┬┐┏┱┐
|
||||
* ┌─┬─┐ ┏━┳━┓ ╔═╦═╗ ┠╂┨┝┿┥╟╫╢╞╪╡ ┡╇┩├╊┫┢╈┪┣╉┤
|
||||
* │ │ │ ┃ ┃ ┃ ║ ║ ║ ┖┸┚┕┷┙╙╨╜╘╧╛ └┴┘└┺┛┗┻┛┗┹┘
|
||||
* ├─┼─┤ ┣━╋━┫ ╠═╬═╣ ┏┱┐┌┲┓┌┬┐┌┬┐ ┏┳┓┌┮┓┌┬┐┏┭┐
|
||||
* │ │ │ ┃ ┃ ┃ ║ ║ ║ ┡╃┤├╄┩├╆┪┢╅┤ ┞╀┦├┾┫┟╁┧┣┽┤
|
||||
* └─┴─┘ ┗━┻━┛ ╚═╩═╝ └┴┘└┴┘└┺┛┗┹┘ └┴┘└┶┛┗┻┛┗┵┘
|
||||
*
|
||||
* Other:
|
||||
* ╭─╮ ╲ ╱ ╷╻╎╏┆┇┊┋ ╺╾╴ ╌╌╌ ┄┄┄ ┈┈┈
|
||||
* │ │ ╳ ╽╿╎╏┆┇┊┋ ╶╼╸ ╍╍╍ ┅┅┅ ┉┉┉
|
||||
* ╰─╯ ╱ ╲ ╹╵╎╏┆┇┊┋
|
||||
*
|
||||
* All box drawing characters:
|
||||
* ─ ━ │ ┃ ┄ ┅ ┆ ┇ ┈ ┉ ┊ ┋ ┌ ┍ ┎ ┏
|
||||
* ┐ ┑ ┒ ┓ └ ┕ ┖ ┗ ┘ ┙ ┚ ┛ ├ ┝ ┞ ┟
|
||||
* ┠ ┡ ┢ ┣ ┤ ┥ ┦ ┧ ┨ ┩ ┪ ┫ ┬ ┭ ┮ ┯
|
||||
* ┰ ┱ ┲ ┳ ┴ ┵ ┶ ┷ ┸ ┹ ┺ ┻ ┼ ┽ ┾ ┿
|
||||
* ╀ ╁ ╂ ╃ ╄ ╅ ╆ ╇ ╈ ╉ ╊ ╋ ╌ ╍ ╎ ╏
|
||||
* ═ ║ ╒ ╓ ╔ ╕ ╖ ╗ ╘ ╙ ╚ ╛ ╜ ╝ ╞ ╟
|
||||
* ╠ ╡ ╢ ╣ ╤ ╥ ╦ ╧ ╨ ╩ ╪ ╫ ╬ ╭ ╮ ╯
|
||||
* ╰ ╱ ╲ ╳ ╴ ╵ ╶ ╷ ╸ ╹ ╺ ╻ ╼ ╽ ╾ ╿
|
||||
*
|
||||
* ---
|
||||
*
|
||||
* Box drawing alignment tests: █
|
||||
* ▉
|
||||
* ╔══╦══╗ ┌──┬──┐ ╭──┬──╮ ╭──┬──╮ ┏━━┳━━┓ ┎┒┏┑ ╷ ╻ ┏┯┓ ┌┰┐ ▊ ╱╲╱╲╳╳╳
|
||||
* ║┌─╨─┐║ │╔═╧═╗│ │╒═╪═╕│ │╓─╁─╖│ ┃┌─╂─┐┃ ┗╃╄┙ ╶┼╴╺╋╸┠┼┨ ┝╋┥ ▋ ╲╱╲╱╳╳╳
|
||||
* ║│╲ ╱│║ │║ ║│ ││ │ ││ │║ ┃ ║│ ┃│ ╿ │┃ ┍╅╆┓ ╵ ╹ ┗┷┛ └┸┘ ▌ ╱╲╱╲╳╳╳
|
||||
* ╠╡ ╳ ╞╣ ├╢ ╟┤ ├┼─┼─┼┤ ├╫─╂─╫┤ ┣┿╾┼╼┿┫ ┕┛┖┚ ┌┄┄┐ ╎ ┏┅┅┓ ┋ ▍ ╲╱╲╱╳╳╳
|
||||
* ║│╱ ╲│║ │║ ║│ ││ │ ││ │║ ┃ ║│ ┃│ ╽ │┃ ░░▒▒▓▓██ ┊ ┆ ╎ ╏ ┇ ┋ ▎
|
||||
* ║└─╥─┘║ │╚═╤═╝│ │╘═╪═╛│ │╙─╀─╜│ ┃└─╂─┘┃ ░░▒▒▓▓██ ┊ ┆ ╎ ╏ ┇ ┋ ▏
|
||||
* ╚══╩══╝ └──┴──┘ ╰──┴──╯ ╰──┴──╯ ┗━━┻━━┛ └╌╌┘ ╎ ┗╍╍┛ ┋ ▁▂▃▄▅▆▇█
|
||||
*
|
||||
* Source: https://www.w3.org/2001/06/utf-8-test/UTF-8-demo.html
|
||||
*/
|
||||
function drawBoxDrawingChar(
|
||||
ctx: CanvasRenderingContext2D,
|
||||
charDefinition: { [fontWeight: number]: string | ((xp: number, yp: number) => string) },
|
||||
xOffset: number,
|
||||
yOffset: number,
|
||||
scaledCellWidth: number,
|
||||
scaledCellHeight: number
|
||||
): void {
|
||||
ctx.strokeStyle = ctx.fillStyle;
|
||||
for (const [fontWeight, instructions] of Object.entries(charDefinition)) {
|
||||
ctx.beginPath();
|
||||
ctx.lineWidth = window.devicePixelRatio * Number.parseInt(fontWeight);
|
||||
let actualInstructions: string;
|
||||
if (typeof instructions === 'function') {
|
||||
const xp = .15;
|
||||
const yp = .15 / scaledCellHeight * scaledCellWidth;
|
||||
actualInstructions = instructions(xp, yp);
|
||||
} else {
|
||||
actualInstructions = instructions;
|
||||
}
|
||||
for (const instruction of actualInstructions.split(' ')) {
|
||||
const type = instruction[0];
|
||||
const f = svgToCanvasInstructionMap[type];
|
||||
if (!f) {
|
||||
console.error(`Could not find drawing instructions for "${type}"`);
|
||||
continue;
|
||||
}
|
||||
const args: string[] = instruction.substring(1).split(',');
|
||||
if (!args[0] || !args[1]) {
|
||||
continue;
|
||||
}
|
||||
f(ctx, translateArgs(args, scaledCellWidth, scaledCellHeight, xOffset, yOffset));
|
||||
}
|
||||
ctx.stroke();
|
||||
ctx.closePath();
|
||||
}
|
||||
}
|
||||
|
||||
function drawPowerlineChar(
|
||||
ctx: CanvasRenderingContext2D,
|
||||
charDefinition: IVectorShape,
|
||||
xOffset: number,
|
||||
yOffset: number,
|
||||
scaledCellWidth: number,
|
||||
scaledCellHeight: number
|
||||
): void {
|
||||
ctx.beginPath();
|
||||
ctx.lineWidth = window.devicePixelRatio;
|
||||
for (const instruction of charDefinition.d.split(' ')) {
|
||||
const type = instruction[0];
|
||||
const f = svgToCanvasInstructionMap[type];
|
||||
if (!f) {
|
||||
console.error(`Could not find drawing instructions for "${type}"`);
|
||||
continue;
|
||||
}
|
||||
const args: string[] = instruction.substring(1).split(',');
|
||||
if (!args[0] || !args[1]) {
|
||||
continue;
|
||||
}
|
||||
f(ctx, translateArgs(args, scaledCellWidth, scaledCellHeight, xOffset, yOffset, charDefinition.horizontalPadding));
|
||||
}
|
||||
if (charDefinition.type === VectorType.STROKE) {
|
||||
ctx.strokeStyle = ctx.fillStyle;
|
||||
ctx.stroke();
|
||||
} else {
|
||||
ctx.fill();
|
||||
}
|
||||
ctx.closePath();
|
||||
}
|
||||
|
||||
function clamp(value: number, max: number, min: number = 0): number {
|
||||
return Math.max(Math.min(value, max), min);
|
||||
}
|
||||
|
||||
const svgToCanvasInstructionMap: { [index: string]: any } = {
|
||||
'C': (ctx: CanvasRenderingContext2D, args: number[]) => ctx.bezierCurveTo(args[0], args[1], args[2], args[3], args[4], args[5]),
|
||||
'L': (ctx: CanvasRenderingContext2D, args: number[]) => ctx.lineTo(args[0], args[1]),
|
||||
'M': (ctx: CanvasRenderingContext2D, args: number[]) => ctx.moveTo(args[0], args[1])
|
||||
};
|
||||
|
||||
function translateArgs(args: string[], cellWidth: number, cellHeight: number, xOffset: number, yOffset: number, horizontalPadding: number = 0): number[] {
|
||||
const result = args.map(e => parseFloat(e) || parseInt(e));
|
||||
|
||||
if (result.length < 2) {
|
||||
throw new Error('Too few arguments for instruction');
|
||||
}
|
||||
|
||||
for (let x = 0; x < result.length; x += 2) {
|
||||
// Translate from 0-1 to 0-cellWidth
|
||||
result[x] *= cellWidth - (horizontalPadding * 2 * window.devicePixelRatio);
|
||||
// Ensure coordinate doesn't escape cell bounds and round to the nearest 0.5 to ensure a crisp
|
||||
// line at 100% devicePixelRatio
|
||||
if (result[x] !== 0) {
|
||||
result[x] = clamp(Math.round(result[x] + 0.5) - 0.5, cellWidth, 0);
|
||||
}
|
||||
// Apply the cell's offset (ie. x*cellWidth)
|
||||
result[x] += xOffset + (horizontalPadding * window.devicePixelRatio);
|
||||
}
|
||||
|
||||
for (let y = 1; y < result.length; y += 2) {
|
||||
// Translate from 0-1 to 0-cellHeight
|
||||
result[y] *= cellHeight;
|
||||
// Ensure coordinate doesn't escape cell bounds and round to the nearest 0.5 to ensure a crisp
|
||||
// line at 100% devicePixelRatio
|
||||
if (result[y] !== 0) {
|
||||
result[y] = clamp(Math.round(result[y] + 0.5) - 0.5, cellHeight, 0);
|
||||
}
|
||||
// Apply the cell's offset (ie. x*cellHeight)
|
||||
result[y] += yOffset;
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
Reference in New Issue
Block a user