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Render small-caps font variant #1611

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Render small-caps font variant #1611

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48059a5
render small-caps font variant
samizdatco Jun 24, 2020
56260c7
added small-caps feature to CHANGELOG
samizdatco Jun 24, 2020
ed7d4a1
added textAttributes field to state struct
samizdatco Jun 25, 2020
4d205f7
only set opentype features on sufficiently new versions of pango
samizdatco Jun 26, 2020
7df005d
skip the small-caps variant test on windows
samizdatco Jun 26, 2020
1082954
expose pango version in module
samizdatco Jun 26, 2020
c99281c
update tests to detect pango version
samizdatco Jun 26, 2020
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13 changes: 9 additions & 4 deletions test/canvas.test.js
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Original file line number Diff line number Diff line change
Expand Up @@ -447,29 +447,34 @@ describe('Canvas', function () {
});

it('Context2d#font=small-caps', function () {
if (process.platform == 'win32'){
// the windows version of pango (< 1.37.1) is too old to support font varients
this.skip();
}

registerFont('./examples/crimsonFont/Crimson-Bold.ttf', {family: 'Crimson'})
let canvas = createCanvas(200,200),
let canvas = createCanvas(200, 200),
ctx = canvas.getContext('2d');

// here is where the dot will appear above a lower-case 'i' (and be missing for small-caps)
let offsetX = 15, offsetY = -115;

ctx.font = "180px Crimson";
ctx.fillText('i', 20, 180);
let lcDottedI = ctx.getImageData(20+offsetX, 180+offsetY, 20,20).data;
let lcDottedI = ctx.getImageData(20 + offsetX, 180 + offsetY, 20, 20).data;
assert.equal(lcDottedI.some(p => p > 0), true);

ctx.save()

ctx.font = "small-caps 180px Crimson";
ctx.fillText('i', 80, 180);
let scEmptySpace = ctx.getImageData(80+offsetX, 180+offsetY, 20,20).data;
let scEmptySpace = ctx.getImageData(80 + offsetX, 180 + offsetY, 20, 20).data;
assert.equal(scEmptySpace.every(p => p == 0), true);

ctx.restore()

ctx.fillText('i', 140, 180);
let lcDottedAgain = ctx.getImageData(140+offsetX, 180+offsetY, 20,20).data;
let lcDottedAgain = ctx.getImageData(140 + offsetX, 180 + offsetY, 20, 20).data;
assert.equal(lcDottedAgain.some(p => p > 0), true);
});

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