840 lines
42 KiB
TypeScript
840 lines
42 KiB
TypeScript
/**
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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/shared/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: 8, 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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/**
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* Generates a drawing function for sextant characters. Sextants are a 2x3 grid where each cell
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* can be on or off.
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* @param pattern A 6-bit pattern where bit 0 = top-left, bit 1 = top-right, bit 2 = middle-left,
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* bit 3 = middle-right, bit 4 = bottom-left, bit 5 = bottom-right
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*/
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function sextant(pattern: number): DrawFunctionDefinition {
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return () => {
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// Sextant grid: 2 columns, 3 rows
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// Row heights in 8ths: top=3, middle=2, bottom=3
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// Column widths: left=4, right=4
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const rects: string[] = [];
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const colW = 0.5; // Each column is half width
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const rowH = [3 / 8, 2 / 8, 3 / 8]; // Row heights as fractions
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const rowY = [0, 3 / 8, 5 / 8]; // Row Y positions
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for (let row = 0; row < 3; row++) {
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const leftBit = (pattern >> (row * 2)) & 1;
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const rightBit = (pattern >> (row * 2 + 1)) & 1;
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if (leftBit && rightBit) {
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// Full row
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rects.push(`M0,${rowY[row]} L1,${rowY[row]} L1,${rowY[row] + rowH[row]} L0,${rowY[row] + rowH[row]} Z`);
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} else if (leftBit) {
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rects.push(`M0,${rowY[row]} L${colW},${rowY[row]} L${colW},${rowY[row] + rowH[row]} L0,${rowY[row] + rowH[row]} Z`);
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} else if (rightBit) {
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rects.push(`M${colW},${rowY[row]} L1,${rowY[row]} L1,${rowY[row] + rowH[row]} L${colW},${rowY[row] + rowH[row]} Z`);
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}
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}
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return rects.join(' ');
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};
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}
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export const symbolsForLegacyComputingDefinitions: { [index: string]: DrawFunctionDefinition | undefined } = {
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// Block sextants (0x1FB00-0x1FB3B)
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// Each sextant is a 2x3 grid of cells in an 8x8 block
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// Cell positions: bit 0=top-left, bit 1=top-right, bit 2=middle-left, bit 3=middle-right,
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// bit 4=bottom-left, bit 5=bottom-right
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// Patterns 0 (empty), 21 (left half), 42 (right half), 63 (full) are excluded as they exist
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// elsewhere
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'\u{1FB00}': sextant(0b000001), // BLOCK SEXTANT-1
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'\u{1FB01}': sextant(0b000010), // BLOCK SEXTANT-2
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'\u{1FB02}': sextant(0b000011), // BLOCK SEXTANT-12 (upper one third block)
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'\u{1FB03}': sextant(0b000100), // BLOCK SEXTANT-3
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'\u{1FB04}': sextant(0b000101), // BLOCK SEXTANT-13
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'\u{1FB05}': sextant(0b000110), // BLOCK SEXTANT-23
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'\u{1FB06}': sextant(0b000111), // BLOCK SEXTANT-123
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'\u{1FB07}': sextant(0b001000), // BLOCK SEXTANT-4
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'\u{1FB08}': sextant(0b001001), // BLOCK SEXTANT-14
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'\u{1FB09}': sextant(0b001010), // BLOCK SEXTANT-24
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'\u{1FB0A}': sextant(0b001011), // BLOCK SEXTANT-124
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'\u{1FB0B}': sextant(0b001100), // BLOCK SEXTANT-34 (middle one third block)
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'\u{1FB0C}': sextant(0b001101), // BLOCK SEXTANT-134
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'\u{1FB0D}': sextant(0b001110), // BLOCK SEXTANT-234
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'\u{1FB0E}': sextant(0b001111), // BLOCK SEXTANT-1234 (upper two thirds block)
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'\u{1FB0F}': sextant(0b010000), // BLOCK SEXTANT-5
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'\u{1FB10}': sextant(0b010001), // BLOCK SEXTANT-15
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'\u{1FB11}': sextant(0b010010), // BLOCK SEXTANT-25
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'\u{1FB12}': sextant(0b010011), // BLOCK SEXTANT-125
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'\u{1FB13}': sextant(0b010100), // BLOCK SEXTANT-35
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// Pattern 21 (0x15 = 0b010101) = left half block, skipped (exists as U+258C)
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'\u{1FB14}': sextant(0b010110), // BLOCK SEXTANT-235
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'\u{1FB15}': sextant(0b010111), // BLOCK SEXTANT-1235
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'\u{1FB16}': sextant(0b011000), // BLOCK SEXTANT-45
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'\u{1FB17}': sextant(0b011001), // BLOCK SEXTANT-145
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'\u{1FB18}': sextant(0b011010), // BLOCK SEXTANT-245
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'\u{1FB19}': sextant(0b011011), // BLOCK SEXTANT-1245
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'\u{1FB1A}': sextant(0b011100), // BLOCK SEXTANT-345
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'\u{1FB1B}': sextant(0b011101), // BLOCK SEXTANT-1345
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'\u{1FB1C}': sextant(0b011110), // BLOCK SEXTANT-2345
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'\u{1FB1D}': sextant(0b011111), // BLOCK SEXTANT-12345
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'\u{1FB1E}': sextant(0b100000), // BLOCK SEXTANT-6
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'\u{1FB1F}': sextant(0b100001), // BLOCK SEXTANT-16
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'\u{1FB20}': sextant(0b100010), // BLOCK SEXTANT-26
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'\u{1FB21}': sextant(0b100011), // BLOCK SEXTANT-126
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'\u{1FB22}': sextant(0b100100), // BLOCK SEXTANT-36
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'\u{1FB23}': sextant(0b100101), // BLOCK SEXTANT-136
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'\u{1FB24}': sextant(0b100110), // BLOCK SEXTANT-236
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'\u{1FB25}': sextant(0b100111), // BLOCK SEXTANT-1236
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'\u{1FB26}': sextant(0b101000), // BLOCK SEXTANT-46
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'\u{1FB27}': sextant(0b101001), // BLOCK SEXTANT-146
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// Pattern 42 (0x2A = 0b101010) = right half block, skipped (exists as U+2590)
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'\u{1FB28}': sextant(0b101011), // BLOCK SEXTANT-1246
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'\u{1FB29}': sextant(0b101100), // BLOCK SEXTANT-346
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'\u{1FB2A}': sextant(0b101101), // BLOCK SEXTANT-1346
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'\u{1FB2B}': sextant(0b101110), // BLOCK SEXTANT-2346
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'\u{1FB2C}': sextant(0b101111), // BLOCK SEXTANT-12346
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'\u{1FB2D}': sextant(0b110000), // BLOCK SEXTANT-56 (lower one third block)
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'\u{1FB2E}': sextant(0b110001), // BLOCK SEXTANT-156
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'\u{1FB2F}': sextant(0b110010), // BLOCK SEXTANT-256
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'\u{1FB30}': sextant(0b110011), // BLOCK SEXTANT-1256 (upper and lower one
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// third block)
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'\u{1FB31}': sextant(0b110100), // BLOCK SEXTANT-356
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'\u{1FB32}': sextant(0b110101), // BLOCK SEXTANT-1356
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'\u{1FB33}': sextant(0b110110), // BLOCK SEXTANT-2356
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'\u{1FB34}': sextant(0b110111), // BLOCK SEXTANT-12356
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'\u{1FB35}': sextant(0b111000), // BLOCK SEXTANT-456
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'\u{1FB36}': sextant(0b111001), // BLOCK SEXTANT-1456
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'\u{1FB37}': sextant(0b111010), // BLOCK SEXTANT-2456
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'\u{1FB38}': sextant(0b111011), // BLOCK SEXTANT-12456
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'\u{1FB39}': sextant(0b111100), // BLOCK SEXTANT-3456 (lower two thirds block)
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'\u{1FB3A}': sextant(0b111101), // BLOCK SEXTANT-13456
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'\u{1FB3B}': sextant(0b111110) // BLOCK SEXTANT-23456
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// Pattern 63 (0x3F = 0b111111) = full block, skipped (exists as U+2588)
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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 } = {
|
||
// Uniform normal and bold
|
||
'─': { [Style.NORMAL]: Shapes.LEFT_TO_RIGHT },
|
||
'━': { [Style.BOLD]: Shapes.LEFT_TO_RIGHT },
|
||
'│': { [Style.NORMAL]: Shapes.TOP_TO_BOTTOM },
|
||
'┃': { [Style.BOLD]: Shapes.TOP_TO_BOTTOM },
|
||
'┌': { [Style.NORMAL]: Shapes.RIGHT_TO_BOTTOM },
|
||
'┏': { [Style.BOLD]: Shapes.RIGHT_TO_BOTTOM },
|
||
'┐': { [Style.NORMAL]: Shapes.LEFT_TO_BOTTOM },
|
||
'┓': { [Style.BOLD]: Shapes.LEFT_TO_BOTTOM },
|
||
'└': { [Style.NORMAL]: Shapes.TOP_TO_RIGHT },
|
||
'┗': { [Style.BOLD]: Shapes.TOP_TO_RIGHT },
|
||
'┘': { [Style.NORMAL]: Shapes.TOP_TO_LEFT },
|
||
'┛': { [Style.BOLD]: Shapes.TOP_TO_LEFT },
|
||
'├': { [Style.NORMAL]: Shapes.T_RIGHT },
|
||
'┣': { [Style.BOLD]: Shapes.T_RIGHT },
|
||
'┤': { [Style.NORMAL]: Shapes.T_LEFT },
|
||
'┫': { [Style.BOLD]: Shapes.T_LEFT },
|
||
'┬': { [Style.NORMAL]: Shapes.T_BOTTOM },
|
||
'┳': { [Style.BOLD]: Shapes.T_BOTTOM },
|
||
'┴': { [Style.NORMAL]: Shapes.T_TOP },
|
||
'┻': { [Style.BOLD]: Shapes.T_TOP },
|
||
'┼': { [Style.NORMAL]: Shapes.CROSS },
|
||
'╋': { [Style.BOLD]: Shapes.CROSS },
|
||
'╴': { [Style.NORMAL]: Shapes.MIDDLE_TO_LEFT },
|
||
'╸': { [Style.BOLD]: Shapes.MIDDLE_TO_LEFT },
|
||
'╵': { [Style.NORMAL]: Shapes.MIDDLE_TO_TOP },
|
||
'╹': { [Style.BOLD]: Shapes.MIDDLE_TO_TOP },
|
||
'╶': { [Style.NORMAL]: Shapes.MIDDLE_TO_RIGHT },
|
||
'╺': { [Style.BOLD]: Shapes.MIDDLE_TO_RIGHT },
|
||
'╷': { [Style.NORMAL]: Shapes.MIDDLE_TO_BOTTOM },
|
||
'╻': { [Style.BOLD]: Shapes.MIDDLE_TO_BOTTOM },
|
||
|
||
// Double border
|
||
'═': { [Style.NORMAL]: (xp, yp) => `M0,${.5 - yp} L1,${.5 - yp} M0,${.5 + yp} L1,${.5 + yp}` },
|
||
'║': { [Style.NORMAL]: (xp, yp) => `M${.5 - xp},0 L${.5 - xp},1 M${.5 + xp},0 L${.5 + xp},1` },
|
||
'╒': { [Style.NORMAL]: (xp, yp) => `M.5,1 L.5,${.5 - yp} L1,${.5 - yp} M.5,${.5 + yp} L1,${.5 + yp}` },
|
||
'╓': { [Style.NORMAL]: (xp, yp) => `M${.5 - xp},1 L${.5 - xp},.5 L1,.5 M${.5 + xp},.5 L${.5 + xp},1` },
|
||
'╔': { [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` },
|
||
'╕': { [Style.NORMAL]: (xp, yp) => `M0,${.5 - yp} L.5,${.5 - yp} L.5,1 M0,${.5 + yp} L.5,${.5 + yp}` },
|
||
'╖': { [Style.NORMAL]: (xp, yp) => `M${.5 + xp},1 L${.5 + xp},.5 L0,.5 M${.5 - xp},.5 L${.5 - xp},1` },
|
||
'╗': { [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` },
|
||
'╘': { [Style.NORMAL]: (xp, yp) => `M.5,0 L.5,${.5 + yp} L1,${.5 + yp} M.5,${.5 - yp} L1,${.5 - yp}` },
|
||
'╙': { [Style.NORMAL]: (xp, yp) => `M1,.5 L${.5 - xp},.5 L${.5 - xp},0 M${.5 + xp},.5 L${.5 + xp},0` },
|
||
'╚': { [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` },
|
||
'╛': { [Style.NORMAL]: (xp, yp) => `M0,${.5 + yp} L.5,${.5 + yp} L.5,0 M0,${.5 - yp} L.5,${.5 - yp}` },
|
||
'╜': { [Style.NORMAL]: (xp, yp) => `M0,.5 L${.5 + xp},.5 L${.5 + xp},0 M${.5 - xp},.5 L${.5 - xp},0` },
|
||
'╝': { [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` },
|
||
'╞': { [Style.NORMAL]: (xp, yp) => `${Shapes.TOP_TO_BOTTOM} M.5,${.5 - yp} L1,${.5 - yp} M.5,${.5 + yp} L1,${.5 + yp}` },
|
||
'╟': { [Style.NORMAL]: (xp, yp) => `M${.5 - xp},0 L${.5 - xp},1 M${.5 + xp},0 L${.5 + xp},1 M${.5 + xp},.5 L1,.5` },
|
||
'╠': { [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` },
|
||
'╡': { [Style.NORMAL]: (xp, yp) => `${Shapes.TOP_TO_BOTTOM} M0,${.5 - yp} L.5,${.5 - yp} M0,${.5 + yp} L.5,${.5 + yp}` },
|
||
'╢': { [Style.NORMAL]: (xp, yp) => `M0,.5 L${.5 - xp},.5 M${.5 - xp},0 L${.5 - xp},1 M${.5 + xp},0 L${.5 + xp},1` },
|
||
'╣': { [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` },
|
||
'╤': { [Style.NORMAL]: (xp, yp) => `M0,${.5 - yp} L1,${.5 - yp} M0,${.5 + yp} L1,${.5 + yp} M.5,${.5 + yp} L.5,1` },
|
||
'╥': { [Style.NORMAL]: (xp, yp) => `${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;
|
||
leftPadding?: number;
|
||
rightPadding?: 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.
|
||
*
|
||
* The line variants draw beyond the cell and get clipped to ensure the end of the line is not
|
||
* visible.
|
||
*
|
||
* Original symbols defined in https://github.com/powerline/fontpatcher
|
||
*/
|
||
export const powerlineDefinitions: { [index: string]: IVectorShape } = {
|
||
// Git branch
|
||
'\u{E0A0}': { d: 'M.3,1 L.03,1 L.03,.88 C.03,.82,.06,.78,.11,.73 C.15,.7,.2,.68,.28,.65 L.43,.6 C.49,.58,.53,.56,.56,.53 C.59,.5,.6,.47,.6,.43 L.6,.27 L.4,.27 L.69,.1 L.98,.27 L.78,.27 L.78,.46 C.78,.52,.76,.56,.72,.61 C.68,.66,.63,.67,.56,.7 L.48,.72 C.42,.74,.38,.76,.35,.78 C.32,.8,.31,.84,.31,.88 L.31,1 M.3,.5 L.03,.59 L.03,.09 L.3,.09 L.3,.655', type: VectorType.FILL },
|
||
// L N
|
||
'\u{E0A1}': { d: 'M.7,.4 L.7,.47 L.2,.47 L.2,.03 L.355,.03 L.355,.4 L.705,.4 M.7,.5 L.86,.5 L.86,.95 L.69,.95 L.44,.66 L.46,.86 L.46,.95 L.3,.95 L.3,.49 L.46,.49 L.71,.78 L.69,.565 L.69,.5', type: VectorType.FILL },
|
||
// Lock
|
||
'\u{E0A2}': { d: 'M.25,.94 C.16,.94,.11,.92,.11,.87 L.11,.53 C.11,.48,.15,.455,.23,.45 L.23,.3 C.23,.25,.26,.22,.31,.19 C.36,.16,.43,.15,.51,.15 C.59,.15,.66,.16,.71,.19 C.77,.22,.79,.26,.79,.3 L.79,.45 C.87,.45,.91,.48,.91,.53 L.91,.87 C.91,.92,.86,.94,.77,.94 L.24,.94 M.53,.2 C.49,.2,.45,.21,.42,.23 C.39,.25,.38,.27,.38,.3 L.38,.45 L.68,.45 L.68,.3 C.68,.27,.67,.25,.64,.23 C.61,.21,.58,.2,.53,.2 M.58,.82 L.58,.66 C.63,.65,.65,.63,.65,.6 C.65,.58,.64,.57,.61,.56 C.58,.55,.56,.54,.52,.54 C.48,.54,.46,.55,.43,.56 C.4,.57,.39,.59,.39,.6 C.39,.63,.41,.64,.46,.66 L.46,.82 L.57,.82', type: VectorType.FILL },
|
||
// Right triangle solid
|
||
'\u{E0B0}': { d: 'M0,0 L1,.5 L0,1', type: VectorType.FILL, rightPadding: 2 },
|
||
// Right triangle line
|
||
'\u{E0B1}': { d: 'M-1,-.5 L1,.5 L-1,1.5', type: VectorType.STROKE, leftPadding: 1, rightPadding: 1 },
|
||
// Left triangle solid
|
||
'\u{E0B2}': { d: 'M1,0 L0,.5 L1,1', type: VectorType.FILL, leftPadding: 2 },
|
||
// Left triangle line
|
||
'\u{E0B3}': { d: 'M2,-.5 L0,.5 L2,1.5', type: VectorType.STROKE, leftPadding: 1, rightPadding: 1 },
|
||
// 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, rightPadding: 1 },
|
||
// Right semi-circle line
|
||
'\u{E0B5}': { d: 'M.2,1 C.422,1,.8,.826,.78,.5 C.8,.174,0.422,0,.2,0', type: VectorType.STROKE, rightPadding: 1 },
|
||
// 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, leftPadding: 1 },
|
||
// Left semi-circle line
|
||
'\u{E0B7}': { d: 'M.8,1 C0.578,1,0.2,.826,.22,.5 C0.2,0.174,0.578,0,0.8,0', type: VectorType.STROKE, leftPadding: 1 },
|
||
// Lower left triangle
|
||
'\u{E0B8}': { d: 'M-.5,-.5 L1.5,1.5 L-.5,1.5', type: VectorType.FILL },
|
||
// Backslash separator
|
||
'\u{E0B9}': { d: 'M-.5,-.5 L1.5,1.5', type: VectorType.STROKE, leftPadding: 1, rightPadding: 1 },
|
||
// Lower right triangle
|
||
'\u{E0BA}': { d: 'M1.5,-.5 L-.5,1.5 L1.5,1.5', type: VectorType.FILL },
|
||
// Upper left triangle
|
||
'\u{E0BC}': { d: 'M1.5,-.5 L-.5,1.5 L-.5,-.5', type: VectorType.FILL },
|
||
// Forward slash separator
|
||
'\u{E0BD}': { d: 'M1.5,-.5 L-.5,1.5', type: VectorType.STROKE, leftPadding: 1, rightPadding: 1 },
|
||
// Upper right triangle
|
||
'\u{E0BE}': { d: 'M-.5,-.5 L1.5,1.5 L1.5,-.5', type: VectorType.FILL }
|
||
};
|
||
// Forward slash separator redundant
|
||
powerlineDefinitions['\u{E0BB}'] = powerlineDefinitions['\u{E0BD}'];
|
||
// Backslash separator redundant
|
||
powerlineDefinitions['\u{E0BF}'] = powerlineDefinitions['\u{E0B9}'];
|
||
|
||
/**
|
||
* 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,
|
||
deviceCellWidth: number,
|
||
deviceCellHeight: number,
|
||
fontSize: number,
|
||
devicePixelRatio: number
|
||
): boolean {
|
||
const blockElementDefinition = blockElementDefinitions[c];
|
||
if (blockElementDefinition) {
|
||
drawBlockVectorChar(ctx, blockElementDefinition, xOffset, yOffset, deviceCellWidth, deviceCellHeight);
|
||
return true;
|
||
}
|
||
|
||
const symbolsForLegacyComputingDefinition = symbolsForLegacyComputingDefinitions[c];
|
||
if (symbolsForLegacyComputingDefinition) {
|
||
drawSextantChar(ctx, symbolsForLegacyComputingDefinition, xOffset, yOffset, deviceCellWidth, deviceCellHeight);
|
||
return true;
|
||
}
|
||
|
||
const patternDefinition = patternCharacterDefinitions[c];
|
||
if (patternDefinition) {
|
||
drawPatternChar(ctx, patternDefinition, xOffset, yOffset, deviceCellWidth, deviceCellHeight);
|
||
return true;
|
||
}
|
||
|
||
const boxDrawingDefinition = boxDrawingDefinitions[c];
|
||
if (boxDrawingDefinition) {
|
||
drawBoxDrawingChar(ctx, boxDrawingDefinition, xOffset, yOffset, deviceCellWidth, deviceCellHeight, devicePixelRatio);
|
||
return true;
|
||
}
|
||
|
||
const powerlineDefinition = powerlineDefinitions[c];
|
||
if (powerlineDefinition) {
|
||
drawPowerlineChar(ctx, powerlineDefinition, xOffset, yOffset, deviceCellWidth, deviceCellHeight, fontSize, devicePixelRatio);
|
||
return true;
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
function drawBlockVectorChar(
|
||
ctx: CanvasRenderingContext2D,
|
||
charDefinition: IBlockVector[],
|
||
xOffset: number,
|
||
yOffset: number,
|
||
deviceCellWidth: number,
|
||
deviceCellHeight: number
|
||
): void {
|
||
for (let i = 0; i < charDefinition.length; i++) {
|
||
const box = charDefinition[i];
|
||
const xEighth = deviceCellWidth / 8;
|
||
const yEighth = deviceCellHeight / 8;
|
||
ctx.fillRect(
|
||
xOffset + box.x * xEighth,
|
||
yOffset + box.y * yEighth,
|
||
box.w * xEighth,
|
||
box.h * yEighth
|
||
);
|
||
}
|
||
}
|
||
|
||
function drawSextantChar(
|
||
ctx: CanvasRenderingContext2D,
|
||
charDefinition: DrawFunctionDefinition,
|
||
xOffset: number,
|
||
yOffset: number,
|
||
deviceCellWidth: number,
|
||
deviceCellHeight: number
|
||
): void {
|
||
const instructions = charDefinition(0, 0);
|
||
ctx.beginPath();
|
||
for (const instruction of instructions.split(' ')) {
|
||
const type = instruction[0];
|
||
const args: string[] = instruction.substring(1).split(',');
|
||
if (!args[0] || !args[1]) {
|
||
if (type === 'Z') {
|
||
ctx.closePath();
|
||
}
|
||
continue;
|
||
}
|
||
const translatedArgs = args.map((e, i) => {
|
||
const val = parseFloat(e);
|
||
return i % 2 === 0
|
||
? xOffset + val * deviceCellWidth
|
||
: yOffset + val * deviceCellHeight;
|
||
});
|
||
if (type === 'M') {
|
||
ctx.moveTo(translatedArgs[0], translatedArgs[1]);
|
||
} else if (type === 'L') {
|
||
ctx.lineTo(translatedArgs[0], translatedArgs[1]);
|
||
}
|
||
}
|
||
ctx.fill();
|
||
}
|
||
|
||
const cachedPatterns: Map<PatternDefinition, Map</* fillStyle */string, CanvasPattern>> = new Map();
|
||
|
||
function drawPatternChar(
|
||
ctx: CanvasRenderingContext2D,
|
||
charDefinition: number[][],
|
||
xOffset: number,
|
||
yOffset: number,
|
||
deviceCellWidth: number,
|
||
deviceCellHeight: 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 = ctx.canvas.ownerDocument.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, deviceCellWidth, deviceCellHeight);
|
||
}
|
||
|
||
/**
|
||
* 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,
|
||
deviceCellWidth: number,
|
||
deviceCellHeight: number,
|
||
devicePixelRatio: number
|
||
): void {
|
||
ctx.strokeStyle = ctx.fillStyle;
|
||
for (const [fontWeight, instructions] of Object.entries(charDefinition)) {
|
||
ctx.beginPath();
|
||
ctx.lineWidth = devicePixelRatio * Number.parseInt(fontWeight);
|
||
let actualInstructions: string;
|
||
if (typeof instructions === 'function') {
|
||
const xp = .15;
|
||
const yp = .15 / deviceCellHeight * deviceCellWidth;
|
||
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, deviceCellWidth, deviceCellHeight, xOffset, yOffset, true, devicePixelRatio));
|
||
}
|
||
ctx.stroke();
|
||
ctx.closePath();
|
||
}
|
||
}
|
||
|
||
function drawPowerlineChar(
|
||
ctx: CanvasRenderingContext2D,
|
||
charDefinition: IVectorShape,
|
||
xOffset: number,
|
||
yOffset: number,
|
||
deviceCellWidth: number,
|
||
deviceCellHeight: number,
|
||
fontSize: number,
|
||
devicePixelRatio: number
|
||
): void {
|
||
// Clip the cell to make sure drawing doesn't occur beyond bounds
|
||
const clipRegion = new Path2D();
|
||
clipRegion.rect(xOffset, yOffset, deviceCellWidth, deviceCellHeight);
|
||
ctx.clip(clipRegion);
|
||
|
||
ctx.beginPath();
|
||
// Scale the stroke with DPR and font size
|
||
const cssLineWidth = fontSize / 12;
|
||
ctx.lineWidth = devicePixelRatio * cssLineWidth;
|
||
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,
|
||
deviceCellWidth,
|
||
deviceCellHeight,
|
||
xOffset,
|
||
yOffset,
|
||
false,
|
||
devicePixelRatio,
|
||
(charDefinition.leftPadding ?? 0) * (cssLineWidth / 2),
|
||
(charDefinition.rightPadding ?? 0) * (cssLineWidth / 2)
|
||
));
|
||
}
|
||
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, doClamp: boolean, devicePixelRatio: number, leftPadding: number = 0, rightPadding: 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 - (leftPadding * devicePixelRatio) - (rightPadding * devicePixelRatio);
|
||
// Ensure coordinate doesn't escape cell bounds and round to the nearest 0.5 to ensure a crisp
|
||
// line at 100% devicePixelRatio
|
||
if (doClamp && 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 + (leftPadding * 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 (doClamp && 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;
|
||
}
|