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850 lines
31 KiB
850 lines
31 KiB
describe('Canvas 2D emulation', () => {
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let container;
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beforeEach(async () => {
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await LoadCanvasKit;
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container = document.createElement('div');
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container.innerHTML = `
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<canvas width=600 height=600 id=test></canvas>
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<canvas width=600 height=600 id=report></canvas>`;
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document.body.appendChild(container);
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});
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afterEach(() => {
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document.body.removeChild(container);
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});
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const expectColorCloseTo = (a, b) => {
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expect(a.length).toEqual(4);
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expect(b.length).toEqual(4);
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for (let i=0; i<4; i++) {
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expect(a[i]).toBeCloseTo(b[i], 3);
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}
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}
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describe('color strings', () => {
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const hex = (s) => {
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return parseInt(s, 16);
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}
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it('parses hex color strings', () => {
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const parseColor = CanvasKit.parseColorString;
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expectColorCloseTo(parseColor('#FED'),
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CanvasKit.Color(hex('FF'), hex('EE'), hex('DD'), 1));
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expectColorCloseTo(parseColor('#FEDC'),
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CanvasKit.Color(hex('FF'), hex('EE'), hex('DD'), hex('CC')/255));
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expectColorCloseTo(parseColor('#fed'),
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CanvasKit.Color(hex('FF'), hex('EE'), hex('DD'), 1));
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expectColorCloseTo(parseColor('#fedc'),
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CanvasKit.Color(hex('FF'), hex('EE'), hex('DD'), hex('CC')/255));
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});
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it('parses rgba color strings', () => {
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const parseColor = CanvasKit.parseColorString;
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expectColorCloseTo(parseColor('rgba(117, 33, 64, 0.75)'),
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CanvasKit.Color(117, 33, 64, 0.75));
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expectColorCloseTo(parseColor('rgb(117, 33, 64, 0.75)'),
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CanvasKit.Color(117, 33, 64, 0.75));
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expectColorCloseTo(parseColor('rgba(117,33,64)'),
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CanvasKit.Color(117, 33, 64, 1.0));
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expectColorCloseTo(parseColor('rgb(117,33, 64)'),
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CanvasKit.Color(117, 33, 64, 1.0));
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expectColorCloseTo(parseColor('rgb(117,33, 64, 32%)'),
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CanvasKit.Color(117, 33, 64, 0.32));
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expectColorCloseTo(parseColor('rgb(117,33, 64, 0.001)'),
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CanvasKit.Color(117, 33, 64, 0.001));
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expectColorCloseTo(parseColor('rgb(117,33,64,0)'),
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CanvasKit.Color(117, 33, 64, 0.0));
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});
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it('parses named color strings', () => {
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// Keep this one as the _testing version, because we don't include the large
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// color map by default.
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const parseColor = CanvasKit._testing.parseColor;
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expectColorCloseTo(parseColor('grey'),
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CanvasKit.Color(128, 128, 128, 1.0));
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expectColorCloseTo(parseColor('blanchedalmond'),
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CanvasKit.Color(255, 235, 205, 1.0));
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expectColorCloseTo(parseColor('transparent'),
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CanvasKit.Color(0, 0, 0, 0));
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});
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it('properly produces color strings', () => {
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const colorToString = CanvasKit._testing.colorToString;
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expect(colorToString(CanvasKit.Color(102, 51, 153, 1.0))).toEqual('#663399');
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expect(colorToString(CanvasKit.Color(255, 235, 205, 0.5))).toEqual(
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'rgba(255, 235, 205, 0.50000000)');
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});
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it('can multiply colors by alpha', () => {
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const multiplyByAlpha = CanvasKit.multiplyByAlpha;
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const testCases = [
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{
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inColor: CanvasKit.Color(102, 51, 153, 1.0),
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inAlpha: 1.0,
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outColor: CanvasKit.Color(102, 51, 153, 1.0),
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},
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{
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inColor: CanvasKit.Color(102, 51, 153, 1.0),
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inAlpha: 0.8,
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outColor: CanvasKit.Color(102, 51, 153, 0.8),
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},
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{
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inColor: CanvasKit.Color(102, 51, 153, 0.8),
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inAlpha: 0.7,
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outColor: CanvasKit.Color(102, 51, 153, 0.56),
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},
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{
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inColor: CanvasKit.Color(102, 51, 153, 0.8),
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inAlpha: 1000,
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outColor: CanvasKit.Color(102, 51, 153, 1.0),
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},
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];
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for (const tc of testCases) {
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// Print out the test case if the two don't match.
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expect(multiplyByAlpha(tc.inColor, tc.inAlpha))
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.toEqual(tc.outColor, JSON.stringify(tc));
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}
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});
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}); // end describe('color string parsing')
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describe('fonts', () => {
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it('can parse font sizes', () => {
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const parseFontString = CanvasKit._testing.parseFontString;
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const tests = [{
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'input': '10px monospace',
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'output': {
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'style': '',
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'variant': '',
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'weight': '',
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'sizePx': 10,
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'family': 'monospace',
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}
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},
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{
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'input': '15pt Arial',
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'output': {
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'style': '',
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'variant': '',
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'weight': '',
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'sizePx': 20,
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'family': 'Arial',
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}
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},
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{
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'input': '1.5in Arial, san-serif ',
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'output': {
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'style': '',
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'variant': '',
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'weight': '',
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'sizePx': 144,
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'family': 'Arial, san-serif',
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}
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},
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{
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'input': '1.5em SuperFont',
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'output': {
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'style': '',
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'variant': '',
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'weight': '',
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'sizePx': 24,
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'family': 'SuperFont',
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}
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},
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];
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for (let i = 0; i < tests.length; i++) {
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expect(parseFontString(tests[i].input)).toEqual(tests[i].output);
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}
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});
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it('can parse font attributes', () => {
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const parseFontString = CanvasKit._testing.parseFontString;
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const tests = [{
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'input': 'bold 10px monospace',
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'output': {
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'style': '',
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'variant': '',
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'weight': 'bold',
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'sizePx': 10,
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'family': 'monospace',
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}
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},
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{
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'input': 'italic bold 10px monospace',
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'output': {
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'style': 'italic',
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'variant': '',
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'weight': 'bold',
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'sizePx': 10,
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'family': 'monospace',
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}
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},
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{
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'input': 'italic small-caps bold 10px monospace',
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'output': {
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'style': 'italic',
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'variant': 'small-caps',
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'weight': 'bold',
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'sizePx': 10,
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'family': 'monospace',
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}
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},
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{
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'input': 'small-caps bold 10px monospace',
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'output': {
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'style': '',
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'variant': 'small-caps',
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'weight': 'bold',
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'sizePx': 10,
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'family': 'monospace',
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}
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},
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{
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'input': 'italic 10px monospace',
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'output': {
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'style': 'italic',
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'variant': '',
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'weight': '',
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'sizePx': 10,
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'family': 'monospace',
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}
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},
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{
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'input': 'small-caps 10px monospace',
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'output': {
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'style': '',
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'variant': 'small-caps',
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'weight': '',
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'sizePx': 10,
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'family': 'monospace',
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}
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},
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{
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'input': 'normal bold 10px monospace',
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'output': {
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'style': 'normal',
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'variant': '',
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'weight': 'bold',
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'sizePx': 10,
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'family': 'monospace',
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}
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},
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];
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for (let i = 0; i < tests.length; i++) {
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expect(parseFontString(tests[i].input)).toEqual(tests[i].output);
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}
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});
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});
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const multipleCanvasTest = (testname, done, test) => {
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const skcanvas = CanvasKit.MakeCanvas(CANVAS_WIDTH, CANVAS_HEIGHT);
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skcanvas._config = 'software_canvas';
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const realCanvas = document.getElementById('test');
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realCanvas._config = 'html_canvas';
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realCanvas.width = CANVAS_WIDTH;
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realCanvas.height = CANVAS_HEIGHT;
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if (!done) {
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console.log('debugging canvaskit');
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test(realCanvas);
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test(skcanvas);
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const png = skcanvas.toDataURL();
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const img = document.createElement('img');
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document.body.appendChild(img);
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img.src = png;
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debugger;
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return;
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}
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let promises = [];
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for (let canvas of [skcanvas, realCanvas]) {
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test(canvas);
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// canvas has .toDataURL (even though skcanvas is not a real Canvas)
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// so this will work.
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promises.push(reportCanvas(canvas, testname, canvas._config));
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}
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Promise.all(promises).then(() => {
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skcanvas.dispose();
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done();
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}).catch(reportError(done));
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}
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describe('CanvasContext2D API', () => {
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multipleCanvasGM('all_line_drawing_operations', (canvas) => {
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const ctx = canvas.getContext('2d');
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ctx.scale(3.0, 3.0);
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ctx.moveTo(20, 5);
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ctx.lineTo(30, 20);
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ctx.lineTo(40, 10);
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ctx.lineTo(50, 20);
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ctx.lineTo(60, 0);
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ctx.lineTo(20, 5);
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ctx.moveTo(20, 80);
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ctx.bezierCurveTo(90, 10, 160, 150, 190, 10);
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ctx.moveTo(36, 148);
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ctx.quadraticCurveTo(66, 188, 120, 136);
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ctx.lineTo(36, 148);
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ctx.rect(5, 170, 20, 25);
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ctx.moveTo(150, 180);
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ctx.arcTo(150, 100, 50, 200, 20);
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ctx.lineTo(160, 160);
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ctx.moveTo(20, 120);
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ctx.arc(20, 120, 18, 0, 1.75 * Math.PI);
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ctx.lineTo(20, 120);
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ctx.moveTo(150, 5);
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ctx.ellipse(130, 25, 30, 10, -1*Math.PI/8, Math.PI/6, 1.5*Math.PI)
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ctx.lineWidth = 2;
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ctx.stroke();
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// Test edgecases and draw direction
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ctx.beginPath();
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ctx.arc(50, 100, 10, Math.PI, -Math.PI/2);
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ctx.stroke();
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ctx.beginPath();
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ctx.arc(75, 100, 10, Math.PI, -Math.PI/2, true);
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ctx.stroke();
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ctx.beginPath();
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ctx.arc(100, 100, 10, Math.PI, 100.1 * Math.PI, true);
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ctx.stroke();
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ctx.beginPath();
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ctx.arc(125, 100, 10, Math.PI, 100.1 * Math.PI, false);
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ctx.stroke();
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ctx.beginPath();
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ctx.ellipse(155, 100, 10, 15, Math.PI/8, 100.1 * Math.PI, Math.PI, true);
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ctx.stroke();
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ctx.beginPath();
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ctx.ellipse(180, 100, 10, 15, Math.PI/8, Math.PI, 100.1 * Math.PI, true);
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ctx.stroke();
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});
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multipleCanvasGM('all_matrix_operations', (canvas) => {
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const ctx = canvas.getContext('2d');
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ctx.rect(10, 10, 20, 20);
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ctx.scale(2.0, 4.0);
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ctx.rect(30, 10, 20, 20);
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ctx.resetTransform();
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ctx.rotate(Math.PI / 3);
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ctx.rect(50, 10, 20, 20);
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ctx.resetTransform();
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ctx.translate(30, -2);
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ctx.rect(70, 10, 20, 20);
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ctx.resetTransform();
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ctx.translate(60, 0);
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ctx.rotate(Math.PI / 6);
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ctx.transform(1.5, 0, 0, 0.5, 0, 0); // effectively scale
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ctx.rect(90, 10, 20, 20);
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ctx.resetTransform();
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ctx.save();
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ctx.setTransform(2, 0, -.5, 2.5, -40, 120);
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ctx.rect(110, 10, 20, 20);
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ctx.lineTo(110, 0);
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ctx.restore();
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ctx.lineTo(220, 120);
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ctx.scale(3.0, 3.0);
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ctx.font = '6pt Noto Mono';
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ctx.fillText('This text should be huge', 10, 80);
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ctx.resetTransform();
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ctx.strokeStyle = 'black';
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ctx.lineWidth = 2;
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ctx.stroke();
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ctx.beginPath();
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ctx.moveTo(250, 30);
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ctx.lineTo(250, 80);
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ctx.scale(3.0, 3.0);
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ctx.lineTo(280/3, 90/3);
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ctx.closePath();
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ctx.strokeStyle = 'black';
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ctx.lineWidth = 5;
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ctx.stroke();
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});
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multipleCanvasGM('shadows_and_save_restore', (canvas) => {
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const ctx = canvas.getContext('2d');
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ctx.strokeStyle = '#000';
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ctx.fillStyle = '#CCC';
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ctx.shadowColor = 'rebeccapurple';
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ctx.shadowBlur = 1;
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ctx.shadowOffsetX = 3;
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ctx.shadowOffsetY = -8;
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ctx.rect(10, 10, 30, 30);
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ctx.save();
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ctx.strokeStyle = '#C00';
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ctx.fillStyle = '#00C';
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ctx.shadowBlur = 0;
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ctx.shadowColor = 'transparent';
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ctx.stroke();
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ctx.restore();
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ctx.fill();
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ctx.beginPath();
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ctx.moveTo(36, 148);
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ctx.quadraticCurveTo(66, 188, 120, 136);
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ctx.closePath();
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ctx.stroke();
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ctx.beginPath();
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ctx.shadowColor = '#993366AA';
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ctx.shadowOffsetX = 8;
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ctx.shadowBlur = 5;
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ctx.setTransform(2, 0, -.5, 2.5, -40, 120);
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ctx.rect(110, 10, 20, 20);
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ctx.lineTo(110, 0);
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ctx.resetTransform();
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ctx.lineTo(220, 120);
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ctx.stroke();
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ctx.fillStyle = 'green';
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ctx.font = '16pt Noto Mono';
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ctx.fillText('This should be shadowed', 20, 80);
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ctx.beginPath();
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ctx.lineWidth = 6;
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ctx.ellipse(10, 290, 30, 30, 0, 0, Math.PI * 2);
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ctx.scale(2, 1);
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ctx.moveTo(10, 290)
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ctx.ellipse(10, 290, 30, 60, 0, 0, Math.PI * 2);
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ctx.resetTransform();
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ctx.shadowColor = '#993366AA';
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ctx.scale(3, 1);
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ctx.moveTo(10, 290)
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ctx.ellipse(10, 290, 30, 90, 0, 0, Math.PI * 2);
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ctx.stroke();
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});
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multipleCanvasGM('global_dashed_rects', (canvas) => {
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const ctx = canvas.getContext('2d');
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ctx.scale(1.1, 1.1);
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ctx.translate(10, 10);
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// Shouldn't impact the fillRect calls
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ctx.setLineDash([5, 3]);
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ctx.fillStyle = 'rgba(200, 0, 100, 0.81)';
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ctx.fillRect(20, 30, 100, 100);
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ctx.globalAlpha = 0.81;
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ctx.fillStyle = 'rgba(200, 0, 100, 1.0)';
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ctx.fillRect(120, 30, 100, 100);
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// This shouldn't do anything
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ctx.globalAlpha = 0.1;
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ctx.fillStyle = 'rgba(200, 0, 100, 0.9)';
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ctx.globalAlpha = 0.9;
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// Intentional no-op to check ordering
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ctx.clearRect(220, 30, 100, 100);
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ctx.fillRect(220, 30, 100, 100);
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ctx.fillRect(320, 30, 100, 100);
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ctx.clearRect(330, 40, 80, 80);
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ctx.strokeStyle = 'blue';
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ctx.lineWidth = 3;
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ctx.setLineDash([5, 3]);
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ctx.strokeRect(20, 150, 100, 100);
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ctx.setLineDash([50, 30]);
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ctx.strokeRect(125, 150, 100, 100);
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ctx.lineDashOffset = 25;
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ctx.strokeRect(230, 150, 100, 100);
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ctx.setLineDash([2, 5, 9]);
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ctx.strokeRect(335, 150, 100, 100);
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ctx.setLineDash([5, 2]);
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ctx.moveTo(336, 400);
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ctx.quadraticCurveTo(366, 488, 120, 450);
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ctx.lineTo(300, 400);
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ctx.stroke();
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ctx.font = '36pt Noto Mono';
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ctx.strokeText('Dashed', 20, 350);
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ctx.fillText('Not Dashed', 20, 400);
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});
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multipleCanvasGM('gradients_clip', (canvas) => {
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const ctx = canvas.getContext('2d');
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const rgradient = ctx.createRadialGradient(200, 300, 10, 100, 100, 300);
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rgradient.addColorStop(0, 'red');
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rgradient.addColorStop(.7, 'white');
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rgradient.addColorStop(1, 'blue');
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ctx.fillStyle = rgradient;
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ctx.globalAlpha = 0.7;
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ctx.fillRect(0,0,600,600);
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ctx.globalAlpha = 0.95;
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ctx.beginPath();
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ctx.arc(300, 100, 90, 0, Math.PI*1.66);
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ctx.closePath();
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ctx.strokeStyle = 'yellow';
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ctx.lineWidth = 5;
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ctx.stroke();
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ctx.save();
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ctx.clip();
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const lgradient = ctx.createLinearGradient(200, 20, 420, 40);
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lgradient.addColorStop(0, 'green');
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lgradient.addColorStop(.5, 'cyan');
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lgradient.addColorStop(1, 'orange');
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ctx.fillStyle = lgradient;
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ctx.fillRect(200, 30, 200, 300);
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ctx.restore();
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ctx.fillRect(550, 550, 40, 40);
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|
});
|
|
|
|
multipleCanvasGM('get_put_imagedata', (canvas) => {
|
|
const ctx = canvas.getContext('2d');
|
|
// Make a gradient so we see if the pixels copying worked
|
|
const grad = ctx.createLinearGradient(0, 0, CANVAS_WIDTH, CANVAS_HEIGHT);
|
|
grad.addColorStop(0, 'yellow');
|
|
grad.addColorStop(1, 'red');
|
|
ctx.fillStyle = grad;
|
|
ctx.fillRect(0, 0, CANVAS_WIDTH, CANVAS_HEIGHT);
|
|
|
|
const iData = ctx.getImageData(400, 100, 200, 150);
|
|
expect(iData.width).toBe(200);
|
|
expect(iData.height).toBe(150);
|
|
expect(iData.data.byteLength).toBe(200*150*4);
|
|
ctx.putImageData(iData, 10, 10);
|
|
ctx.putImageData(iData, 350, 350, 100, 75, 45, 40);
|
|
ctx.strokeRect(350, 350, 200, 150);
|
|
|
|
const box = ctx.createImageData(20, 40);
|
|
ctx.putImageData(box, 10, 300);
|
|
const biggerBox = ctx.createImageData(iData);
|
|
ctx.putImageData(biggerBox, 10, 350);
|
|
expect(biggerBox.width).toBe(iData.width);
|
|
expect(biggerBox.height).toBe(iData.height);
|
|
});
|
|
|
|
multipleCanvasGM('shadows_with_rotate_skbug_9947', (canvas) => {
|
|
const ctx = canvas.getContext('2d');
|
|
const angle = 240;
|
|
ctx.fillStyle = 'white';
|
|
ctx.fillRect(0, 0, CANVAS_WIDTH, CANVAS_HEIGHT);
|
|
ctx.save();
|
|
ctx.translate(80, 80);
|
|
ctx.rotate((angle * Math.PI) / 180);
|
|
ctx.shadowOffsetX = 10;
|
|
ctx.shadowOffsetY = 10;
|
|
ctx.shadowColor = 'rgba(100,100,100,0.5)';
|
|
ctx.shadowBlur = 1;
|
|
ctx.fillStyle = 'black';
|
|
ctx.strokeStyle = 'red';
|
|
ctx.beginPath();
|
|
ctx.rect(-20, -20, 40, 40);
|
|
ctx.fill();
|
|
ctx.fillRect(30, 30, 40, 40);
|
|
ctx.strokeRect(30, -20, 40, 40);
|
|
ctx.fillText('text', -20, -30);
|
|
ctx.restore();
|
|
});
|
|
|
|
describe('using images', () => {
|
|
let skImageData = null;
|
|
let htmlImage = null;
|
|
const skPromise = fetch('/assets/mandrill_512.png')
|
|
.then((response) => response.arrayBuffer())
|
|
.then((buffer) => {
|
|
skImageData = buffer;
|
|
|
|
});
|
|
const realPromise = fetch('/assets/mandrill_512.png')
|
|
.then((response) => response.blob())
|
|
.then((blob) => createImageBitmap(blob))
|
|
.then((bitmap) => {
|
|
htmlImage = bitmap;
|
|
});
|
|
|
|
beforeEach(async () => {
|
|
await skPromise;
|
|
await realPromise;
|
|
});
|
|
|
|
multipleCanvasGM('draw_patterns', (canvas) => {
|
|
const ctx = canvas.getContext('2d');
|
|
let img = htmlImage;
|
|
if (canvas._config == 'software_canvas') {
|
|
img = canvas.decodeImage(skImageData);
|
|
}
|
|
ctx.fillStyle = '#EEE';
|
|
ctx.fillRect(0, 0, CANVAS_WIDTH, CANVAS_HEIGHT);
|
|
ctx.lineWidth = 20;
|
|
ctx.scale(0.2, 0.4);
|
|
|
|
let pattern = ctx.createPattern(img, 'repeat');
|
|
ctx.fillStyle = pattern;
|
|
ctx.fillRect(0, 0, 1500, 750);
|
|
|
|
pattern = ctx.createPattern(img, 'repeat-x');
|
|
ctx.fillStyle = pattern;
|
|
ctx.fillRect(1500, 0, 3000, 750);
|
|
|
|
ctx.globalAlpha = 0.7
|
|
pattern = ctx.createPattern(img, 'repeat-y');
|
|
ctx.fillStyle = pattern;
|
|
ctx.fillRect(0, 750, 1500, 1500);
|
|
ctx.strokeRect(0, 750, 1500, 1500);
|
|
|
|
pattern = ctx.createPattern(img, 'no-repeat');
|
|
ctx.fillStyle = pattern;
|
|
pattern.setTransform({a: 1, b: -.1, c:.1, d: 0.5, e: 1800, f:800});
|
|
ctx.fillRect(0, 0, 3000, 1500);
|
|
});
|
|
|
|
multipleCanvasGM('draw_image', (canvas) => {
|
|
let ctx = canvas.getContext('2d');
|
|
let img = htmlImage;
|
|
if (canvas._config == 'software_canvas') {
|
|
img = canvas.decodeImage(skImageData);
|
|
}
|
|
ctx.drawImage(img, 30, -200);
|
|
|
|
ctx.globalAlpha = 0.7
|
|
ctx.rotate(.1);
|
|
ctx.imageSmoothingQuality = 'medium';
|
|
ctx.drawImage(img, 200, 350, 150, 100);
|
|
ctx.rotate(-.2);
|
|
ctx.imageSmoothingEnabled = false;
|
|
ctx.drawImage(img, 100, 150, 400, 350, 10, 400, 150, 100);
|
|
});
|
|
}); // end describe('using images')
|
|
|
|
{
|
|
const drawPoint = (ctx, x, y, color) => {
|
|
ctx.fillStyle = color;
|
|
ctx.fillRect(x, y, 1, 1);
|
|
}
|
|
const IN = 'purple';
|
|
const OUT = 'orange';
|
|
const SCALE = 8;
|
|
|
|
// Check to see if these points are in or out on each of the
|
|
// test configurations.
|
|
const pts = [[3, 3], [4, 4], [5, 5], [10, 10], [8, 10], [6, 10],
|
|
[6.5, 9], [15, 10], [17, 10], [17, 11], [24, 24],
|
|
[25, 25], [26, 26], [27, 27]];
|
|
const tests = [
|
|
{
|
|
xOffset: 0,
|
|
yOffset: 0,
|
|
fillType: 'nonzero',
|
|
strokeWidth: 0,
|
|
testFn: (ctx, x, y) => ctx.isPointInPath(x * SCALE, y * SCALE, 'nonzero'),
|
|
},
|
|
{
|
|
xOffset: 30,
|
|
yOffset: 0,
|
|
fillType: 'evenodd',
|
|
strokeWidth: 0,
|
|
testFn: (ctx, x, y) => ctx.isPointInPath(x * SCALE, y * SCALE, 'evenodd'),
|
|
},
|
|
{
|
|
xOffset: 0,
|
|
yOffset: 30,
|
|
fillType: null,
|
|
strokeWidth: 1,
|
|
testFn: (ctx, x, y) => ctx.isPointInStroke(x * SCALE, y * SCALE),
|
|
},
|
|
{
|
|
xOffset: 30,
|
|
yOffset: 30,
|
|
fillType: null,
|
|
strokeWidth: 2,
|
|
testFn: (ctx, x, y) => ctx.isPointInStroke(x * SCALE, y * SCALE),
|
|
},
|
|
];
|
|
multipleCanvasGM('points_in_path_stroke', (canvas) => {
|
|
const ctx = canvas.getContext('2d');
|
|
ctx.font = '20px Noto Mono';
|
|
// Draw some visual aids
|
|
ctx.fillText('path-nonzero', 60, 30);
|
|
ctx.fillText('path-evenodd', 300, 30);
|
|
ctx.fillText('stroke-1px-wide', 60, 260);
|
|
ctx.fillText('stroke-2px-wide', 300, 260);
|
|
ctx.fillText('purple is IN, orange is OUT', 20, 560);
|
|
|
|
// Scale up to make single pixels easier to see
|
|
ctx.scale(SCALE, SCALE);
|
|
for (const test of tests) {
|
|
ctx.beginPath();
|
|
const xOffset = test.xOffset;
|
|
const yOffset = test.yOffset;
|
|
|
|
ctx.fillStyle = '#AAA';
|
|
ctx.lineWidth = test.strokeWidth;
|
|
ctx.rect(5+xOffset, 5+yOffset, 20, 20);
|
|
ctx.arc(15+xOffset, 15+yOffset, 8, 0, Math.PI*2, false);
|
|
if (test.fillType) {
|
|
ctx.fill(test.fillType);
|
|
} else {
|
|
ctx.stroke();
|
|
}
|
|
|
|
for (const pt of pts) {
|
|
let [x, y] = pt;
|
|
x += xOffset;
|
|
y += yOffset;
|
|
// naively apply transform when querying because the points queried
|
|
// ignore the CTM.
|
|
if (test.testFn(ctx, x, y)) {
|
|
drawPoint(ctx, x, y, IN);
|
|
} else {
|
|
drawPoint(ctx, x, y, OUT);
|
|
}
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
describe('loading custom fonts', () => {
|
|
const realFontLoaded = new FontFace('BungeeNonSystem', 'url(/assets/Bungee-Regular.ttf)', {
|
|
'family': 'BungeeNonSystem', //Make sure the canvas does not use the system font
|
|
'style': 'normal',
|
|
'weight': '400',
|
|
}).load().then((font) => {
|
|
document.fonts.add(font);
|
|
});
|
|
|
|
let fontBuffer = null;
|
|
const skFontLoaded = fetch('/assets/Bungee-Regular.ttf').then(
|
|
(response) => response.arrayBuffer()).then(
|
|
(buffer) => {
|
|
fontBuffer = buffer;
|
|
});
|
|
|
|
beforeEach(async () => {
|
|
await realFontLoaded;
|
|
await skFontLoaded;
|
|
});
|
|
|
|
multipleCanvasGM('custom_font', (canvas) => {
|
|
if (canvas.loadFont) {
|
|
canvas.loadFont(fontBuffer, {
|
|
'family': 'BungeeNonSystem',
|
|
'style': 'normal',
|
|
'weight': '400',
|
|
});
|
|
}
|
|
const ctx = canvas.getContext('2d');
|
|
|
|
ctx.font = '20px monospace';
|
|
ctx.fillText('20 px monospace', 10, 30);
|
|
|
|
ctx.font = '2.0em BungeeNonSystem';
|
|
ctx.fillText('2.0em Bungee filled', 10, 80);
|
|
ctx.strokeText('2.0em Bungee stroked', 10, 130);
|
|
|
|
ctx.font = '40pt monospace';
|
|
ctx.strokeText('40pt monospace', 10, 200);
|
|
|
|
// bold wasn't defined, so should fallback to just the 400 weight
|
|
ctx.font = 'bold 45px BungeeNonSystem';
|
|
ctx.fillText('45px Bungee filled', 10, 260);
|
|
});
|
|
}); // describe('loading custom fonts')
|
|
|
|
it('can read default properties', () => {
|
|
const skcanvas = CanvasKit.MakeCanvas(CANVAS_WIDTH, CANVAS_HEIGHT);
|
|
const realCanvas = document.getElementById('test');
|
|
realCanvas.width = CANVAS_WIDTH;
|
|
realCanvas.height = CANVAS_HEIGHT;
|
|
|
|
const skcontext = skcanvas.getContext('2d');
|
|
const realContext = realCanvas.getContext('2d');
|
|
// The skia canvas only comes with a monospace font by default
|
|
// Set the html canvas to be monospace too.
|
|
realContext.font = '10px monospace';
|
|
|
|
const toTest = ['font', 'lineWidth', 'strokeStyle', 'lineCap',
|
|
'lineJoin', 'miterLimit', 'shadowOffsetY',
|
|
'shadowBlur', 'shadowColor', 'shadowOffsetX',
|
|
'globalAlpha', 'globalCompositeOperation',
|
|
'lineDashOffset', 'imageSmoothingEnabled',
|
|
'imageFilterQuality'];
|
|
|
|
// Compare all the default values of the properties of skcanvas
|
|
// to the default values on the properties of a real canvas.
|
|
for(let attr of toTest) {
|
|
expect(skcontext[attr]).toBe(realContext[attr], attr);
|
|
}
|
|
|
|
skcanvas.dispose();
|
|
});
|
|
}); // end describe('CanvasContext2D API')
|
|
|
|
describe('Path2D API', () => {
|
|
multipleCanvasGM('path2d_line_drawing_operations', (canvas) => {
|
|
const ctx = canvas.getContext('2d');
|
|
let clock;
|
|
let path;
|
|
if (canvas.makePath2D) {
|
|
clock = canvas.makePath2D('M11.99 2C6.47 2 2 6.48 2 12s4.47 10 9.99 10C17.52 22 22 17.52 22 12S17.52 2 11.99 2zM12 20c-4.42 0-8-3.58-8-8s3.58-8 8-8 8 3.58 8 8-3.58 8-8 8zm.5-13H11v6l5.25 3.15.75-1.23-4.5-2.67z');
|
|
path = canvas.makePath2D();
|
|
} else {
|
|
clock = new Path2D('M11.99 2C6.47 2 2 6.48 2 12s4.47 10 9.99 10C17.52 22 22 17.52 22 12S17.52 2 11.99 2zM12 20c-4.42 0-8-3.58-8-8s3.58-8 8-8 8 3.58 8 8-3.58 8-8 8zm.5-13H11v6l5.25 3.15.75-1.23-4.5-2.67z')
|
|
path = new Path2D();
|
|
}
|
|
path.moveTo(20, 5);
|
|
path.lineTo(30, 20);
|
|
path.lineTo(40, 10);
|
|
path.lineTo(50, 20);
|
|
path.lineTo(60, 0);
|
|
path.lineTo(20, 5);
|
|
|
|
path.moveTo(20, 80);
|
|
path.bezierCurveTo(90, 10, 160, 150, 190, 10);
|
|
|
|
path.moveTo(36, 148);
|
|
path.quadraticCurveTo(66, 188, 120, 136);
|
|
path.lineTo(36, 148);
|
|
|
|
path.rect(5, 170, 20, 25);
|
|
|
|
path.moveTo(150, 180);
|
|
path.arcTo(150, 100, 50, 200, 20);
|
|
path.lineTo(160, 160);
|
|
|
|
path.moveTo(20, 120);
|
|
path.arc(20, 120, 18, 0, 1.75 * Math.PI);
|
|
path.lineTo(20, 120);
|
|
|
|
path.moveTo(150, 5);
|
|
path.ellipse(130, 25, 30, 10, -1*Math.PI/8, Math.PI/6, 1.5*Math.PI)
|
|
|
|
ctx.lineWidth = 2;
|
|
ctx.scale(3.0, 3.0);
|
|
ctx.stroke(path);
|
|
ctx.stroke(clock);
|
|
});
|
|
}); // end describe('Path2D API')
|
|
});
|