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- name: 2d.drawImage.canvas
canvas_types: ['HtmlCanvas']
code: |
var canvas2 = document.createElement('canvas');
canvas2.width = 100;
canvas2.height = 50;
var ctx2 = canvas2.getContext('2d');
ctx2.fillStyle = '#0f0';
ctx2.fillRect(0, 0, 100, 50);
ctx.fillStyle = '#f00';
ctx.drawImage(canvas2, 0, 0);
@assert pixel 0,0 ==~ 0,255,0,255;
@assert pixel 99,0 ==~ 0,255,0,255;
@assert pixel 0,49 ==~ 0,255,0,255;
@assert pixel 99,49 ==~ 0,255,0,255;
ctx.drawImage(document.createElement('canvas'), 0, 0);
@assert pixel 0,0 ==~ 0,255,0,255;
@assert pixel 99,0 ==~ 0,255,0,255;
@assert pixel 0,49 ==~ 0,255,0,255;
@assert pixel 99,49 ==~ 0,255,0,255;
expected: green
- name: 2d.drawImage.self.1
code: |
ctx.fillStyle = '#0f0';
ctx.fillRect(0, 0, 50, 50);
ctx.fillStyle = '#f00';
ctx.fillRect(50, 0, 50, 50);
ctx.drawImage(canvas, 50, 0);
@assert pixel 0,0 ==~ 0,255,0,255;
@assert pixel 99,0 ==~ 0,255,0,255;
@assert pixel 0,49 ==~ 0,255,0,255;
@assert pixel 99,49 ==~ 0,255,0,255;
expected: green
- name: 2d.drawImage.self.2
code: |
ctx.fillStyle = '#0f0';
ctx.fillRect(0, 1, 100, 49);
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 1);
ctx.drawImage(canvas, 0, 1);
ctx.fillStyle = '#0f0';
ctx.fillRect(0, 0, 100, 2);
@assert pixel 0,0 ==~ 0,255,0,255;
@assert pixel 99,0 ==~ 0,255,0,255;
@assert pixel 0,49 ==~ 0,255,0,255;
@assert pixel 99,49 ==~ 0,255,0,255;
expected: green
- name: 2d.drawImage.null
code: |
@assert throws TypeError ctx.drawImage(null, 0, 0);
- name: 2d.drawImage.wrongtype
desc: Incorrect image types in drawImage do not match any defined overloads, so
WebIDL throws a TypeError
code: |
@assert throws TypeError ctx.drawImage(undefined, 0, 0);
@assert throws TypeError ctx.drawImage(0, 0, 0);
@assert throws TypeError ctx.drawImage("", 0, 0);
- name: 2d.drawImage.wrongtype.paragraph
desc: Incorrect image types in drawImage do not match any defined overloads, so
WebIDL throws a TypeError
notes: &bindings Defined in "Web IDL" (draft)
canvas_types: ['HtmlCanvas']
code: |
@assert throws TypeError ctx.drawImage(document.createElement('p'), 0, 0);
- name: 2d.drawImage.incomplete.nosrc
canvas_types: ['HtmlCanvas']
mozilla: {throws: !!null ''}
code: |
ctx.fillStyle = '#0f0';
ctx.fillRect(0, 0, 100, 50);
var img = new Image();
ctx.drawImage(img, 0, 0);
@assert pixel 50,25 ==~ 0,255,0,255;
expected: green
- name: 2d.drawImage.incomplete.immediate
canvas_types: ['HtmlCanvas']
images:
- red.png
code: |
ctx.fillStyle = '#0f0';
ctx.fillRect(0, 0, 100, 50);
var img = new Image();
img.src = '../images/red.png';
// This triggers the "update the image data" algorithm.
// The image will not go to the "completely available" state
// until a fetch task in the networking task source is processed,
// so the image must not be fully decodable yet:
ctx.drawImage(img, 0, 0);
@assert pixel 50,25 ==~ 0,255,0,255; @moz-todo
expected: green
- name: 2d.drawImage.incomplete.reload
canvas_types: ['HtmlCanvas']
images:
- yellow.png
- red.png
code: |
ctx.fillStyle = '#0f0';
ctx.fillRect(0, 0, 100, 50);
var img = document.getElementById('yellow.png');
img.src = '../images/red.png';
// This triggers the "update the image data" algorithm,
// and resets the image to the "unavailable" state.
// The image will not go to the "completely available" state
// until a fetch task in the networking task source is processed,
// so the image must not be fully decodable yet:
ctx.drawImage(img, 0, 0);
@assert pixel 50,25 ==~ 0,255,0,255; @moz-todo
expected: green
- name: 2d.drawImage.incomplete.emptysrc
canvas_types: ['HtmlCanvas']
images:
- red.png
mozilla: {throws: !!null ''}
code: |
ctx.fillStyle = '#0f0';
ctx.fillRect(0, 0, 100, 50);
var img = document.getElementById('red.png');
img.src = "";
ctx.drawImage(img, 0, 0);
@assert pixel 50,25 ==~ 0,255,0,255;
expected: green
- name: 2d.drawImage.incomplete.removedsrc
canvas_types: ['HtmlCanvas']
images:
- red.png
mozilla: {throws: !!null ''}
code: |
ctx.fillStyle = '#0f0';
ctx.fillRect(0, 0, 100, 50);
var img = document.getElementById('red.png');
img.removeAttribute('src');
ctx.drawImage(img, 0, 0);
@assert pixel 50,25 ==~ 0,255,0,255;
expected: green
- name: 2d.drawImage.nonexistent
canvas_types: ['HtmlCanvas']
images:
- not-found-at-all.png
code: |
var img = document.getElementById('not-found-at-all.png');
@assert throws INVALID_STATE_ERR ctx.drawImage(img, 0, 0);
- name: 2d.drawImage.zerocanvas
desc: drawImage with zero-sized canvas as the source shoud throw exception
canvas_types: ['HtmlCanvas']
code: |
var canvas2 = document.createElement('canvas');
canvas2.width = 0;
canvas2.height = 50;
@assert throws INVALID_STATE_ERR ctx.drawImage(canvas2, 0, 0);
canvas2.width = 50;
canvas2.height = 0;
@assert throws INVALID_STATE_ERR ctx.drawImage(canvas2, 0, 0);
canvas2.width = 0;
canvas2.height = 0;
@assert throws INVALID_STATE_ERR ctx.drawImage(canvas2, 0, 0);
- name: 2d.drawImage.animated.gif
desc: drawImage() of an animated GIF draws the first frame
canvas_types: ['HtmlCanvas']
images:
- anim-gr.gif
code: |
deferTest();
step_timeout(t.step_func_done(function () {
ctx.drawImage(document.getElementById('anim-gr.gif'), 0, 0);
@assert pixel 50,25 ==~ 0,255,0,255;
}), 500);
expected: green
# TODO: drawImage shadows
- name: 2d.drawImage.3arg
test_type: promise
code: |
const response_red = await fetch('/images/red.png');
const blob_red = await response_red.blob();
const bitmap_red = await createImageBitmap(blob_red);
const response_green = await fetch('/images/green.png');
const blob_green = await response_green.blob();
const bitmap_green = await createImageBitmap(blob_green);
ctx.drawImage(bitmap_green, 0, 0);
ctx.drawImage(bitmap_red, -100, 0);
ctx.drawImage(bitmap_red, 100, 0);
ctx.drawImage(bitmap_red, 0, -50);
ctx.drawImage(bitmap_red, 0, 50);
@assert pixel 0,0 ==~ 0,255,0,255;
@assert pixel 99,0 ==~ 0,255,0,255;
@assert pixel 0,49 ==~ 0,255,0,255;
@assert pixel 99,49 ==~ 0,255,0,255;
- name: 2d.drawImage.5arg
test_type: promise
code: |
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 50);
const response_red = await fetch('/images/red.png');
const blob_red = await response_red.blob();
const bitmap_red = await createImageBitmap(blob_red);
const response_green = await fetch('/images/green.png');
const blob_green = await response_green.blob();
const bitmap_green = await createImageBitmap(blob_green);
ctx.drawImage(bitmap_green, 50, 0, 50, 50);
ctx.drawImage(bitmap_red, 0, 0, 50, 50);
ctx.fillStyle = '#0f0';
ctx.fillRect(0, 0, 50, 50);
@assert pixel 0,0 ==~ 0,255,0,255;
@assert pixel 99,0 ==~ 0,255,0,255;
@assert pixel 0,49 ==~ 0,255,0,255;
@assert pixel 99,49 ==~ 0,255,0,255;
- name: 2d.drawImage.9arg.basic
test_type: promise
code: |
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 50);
const response = await fetch('/images/green.png');
const blob = await response.blob();
const bitmap = await createImageBitmap(blob);
ctx.drawImage(bitmap, 0, 0, 100, 50, 0, 0, 100, 50);
@assert pixel 0,0 ==~ 0,255,0,255;
@assert pixel 99,0 ==~ 0,255,0,255;
@assert pixel 0,49 ==~ 0,255,0,255;
@assert pixel 99,49 ==~ 0,255,0,255;
expected: green
- name: 2d.drawImage.9arg.sourcepos
test_type: promise
code: |
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 50);
const response = await fetch('/images/rgrg-256x256.png');
const blob = await response.blob();
const bitmap = await createImageBitmap(blob);
ctx.drawImage(bitmap, 140, 20, 100, 50, 0, 0, 100, 50);
@assert pixel 0,0 ==~ 0,255,0,255;
@assert pixel 99,0 ==~ 0,255,0,255;
@assert pixel 0,49 ==~ 0,255,0,255;
@assert pixel 99,49 ==~ 0,255,0,255;
expected: green
- name: 2d.drawImage.9arg.sourcesize
test_type: promise
code: |
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 50);
const response = await fetch('/images/rgrg-256x256.png');
const blob = await response.blob();
const bitmap = await createImageBitmap(blob);
ctx.drawImage(bitmap, 0, 0, 256, 256, 0, 0, 100, 50);
ctx.fillStyle = '#0f0';
ctx.fillRect(0, 0, 51, 26);
ctx.fillRect(49, 24, 51, 26);
@assert pixel 0,0 ==~ 0,255,0,255;
@assert pixel 99,0 ==~ 0,255,0,255;
@assert pixel 0,49 ==~ 0,255,0,255;
@assert pixel 99,49 ==~ 0,255,0,255;
@assert pixel 20,20 ==~ 0,255,0,255;
@assert pixel 80,20 ==~ 0,255,0,255;
@assert pixel 20,30 ==~ 0,255,0,255;
@assert pixel 80,30 ==~ 0,255,0,255;
expected: green
- name: 2d.drawImage.9arg.destpos
test_type: promise
code: |
const response_red = await fetch('/images/red.png');
const blob_red = await response_red.blob();
const bitmap_red = await createImageBitmap(blob_red);
const response_green = await fetch('/images/green.png');
const blob_green = await response_green.blob();
const bitmap_green = await createImageBitmap(blob_green);
ctx.drawImage(bitmap_green, 0, 0, 100, 50, 0, 0, 100, 50);
ctx.drawImage(bitmap_green, 0, 0, 100, 50, -100, 0, 100, 50);
ctx.drawImage(bitmap_red, 0, 0, 100, 50, 100, 0, 100, 50);
ctx.drawImage(bitmap_red, 0, 0, 100, 50, 0, -50, 100, 50);
ctx.drawImage(bitmap_red, 0, 0, 100, 50, 0, 50, 100, 50);
@assert pixel 0,0 ==~ 0,255,0,255;
@assert pixel 99,0 ==~ 0,255,0,255;
@assert pixel 0,49 ==~ 0,255,0,255;
@assert pixel 99,49 ==~ 0,255,0,255;
- name: 2d.drawImage.9arg.destsize
test_type: promise
code: |
const response_red = await fetch('/images/red.png');
const blob_red = await response_red.blob();
const bitmap_red = await createImageBitmap(blob_red);
const response_green = await fetch('/images/green.png');
const blob_green = await response_green.blob();
const bitmap_green = await createImageBitmap(blob_green);
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 50);
ctx.drawImage(bitmap_green, 1, 1, 1, 1, 0, 0, 100, 50);
ctx.drawImage(bitmap_red, 0, 0, 100, 50, -50, 0, 50, 50);
ctx.drawImage(bitmap_red, 0, 0, 100, 50, 100, 0, 50, 50);
ctx.drawImage(bitmap_red, 0, 0, 100, 50, 0, -25, 100, 25);
ctx.drawImage(bitmap_red, 0, 0, 100, 50, 0, 50, 100, 25);
@assert pixel 0,0 ==~ 0,255,0,255;
@assert pixel 99,0 ==~ 0,255,0,255;
@assert pixel 0,49 ==~ 0,255,0,255;
@assert pixel 99,49 ==~ 0,255,0,255;
- name: 2d.drawImage.canvas
canvas_types: ['OffscreenCanvas', 'Worker']
code: |
var offscreenCanvas2 = new OffscreenCanvas(100, 50);
var ctx2 = offscreenCanvas2.getContext('2d');
ctx2.fillStyle = '#0f0';
ctx2.fillRect(0, 0, 100, 50);
ctx.fillStyle = '#f00';
ctx.drawImage(offscreenCanvas2, 0, 0);
@assert pixel 0,0 ==~ 0,255,0,255;
@assert pixel 99,0 ==~ 0,255,0,255;
@assert pixel 0,49 ==~ 0,255,0,255;
@assert pixel 99,49 ==~ 0,255,0,255;
- name: 2d.drawImage.zerocanvas
canvas_types: ['OffscreenCanvas', 'Worker']
code: |
var offscreenCanvas2 = new OffscreenCanvas(0, 10);
@assert throws INVALID_STATE_ERR ctx.drawImage(offscreenCanvas2, 0, 0);
offscreenCanvas2.width = 10;
offscreenCanvas2.height = 0;
@assert throws INVALID_STATE_ERR ctx.drawImage(offscreenCanvas2, 0, 0);
offscreenCanvas2.width = 0;
offscreenCanvas2.height = 0;
@assert throws INVALID_STATE_ERR ctx.drawImage(offscreenCanvas2, 0, 0);
- name: 2d.drawImage.floatsource
test_type: promise
code: |
const response = await fetch('/images/green.png');
const blob = await response.blob();
const bitmap = await createImageBitmap(blob);
ctx.drawImage(bitmap, 10.1, 10.1, 0.1, 0.1, 0, 0, 100, 50);
@assert pixel 50,25 ==~ 0,255,0,255;
Expected: green
- name: 2d.drawImage.zerosource
desc: drawImage with zero-sized source rectangle draws nothing without exception
test_type: promise
code: |
ctx.fillStyle = '#0f0';
ctx.fillRect(0, 0, 100, 50);
const response = await fetch('/images/red.png');
const blob = await response.blob();
const bitmap = await createImageBitmap(blob);
ctx.drawImage(bitmap, 10, 10, 0, 1, 0, 0, 100, 50);
ctx.drawImage(bitmap, 10, 10, 1, 0, 0, 0, 100, 50);
ctx.drawImage(bitmap, 10, 10, 0, 0, 0, 0, 100, 50);
@assert pixel 50,25 ==~ 0,255,0,255;
expected: green
- name: 2d.drawImage.zerosource.image
desc: drawImage with zero-sized source rectangle from image draws nothing without exception
test_type: promise
canvas_types: ['HtmlCanvas', 'OffscreenCanvas']
code: |
ctx.fillStyle = '#0f0';
ctx.fillRect(0, 0, 100, 50);
function loadImage(src) {
return new Promise((resolve, reject) => {
const img = new Image();
img.onload = () => resolve(img);
img.onerror = (err) => reject(err);
img.src = src;
});
}
const img1 = await loadImage('/images/red-zerowidth.svg');
const img2 = await loadImage('/images/red-zeroheight.svg');
const img3 = await loadImage('/images/red-zerosize.svg');
ctx.drawImage(img1, 0, 0, 100, 50);
ctx.drawImage(img2, 0, 0, 100, 50);
ctx.drawImage(img3, 0, 0, 100, 50);
_assertPixel(canvas, 50, 25, 0, 255, 0, 255);
expected: green
- name: 2d.drawImage.negativesource
desc: Negative source width/height represents the correct rectangle
mozilla: {throws: !!null ''}
test_type: promise
code: |
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 50);
const response = await fetch('/images/ggrr-256x256.png');
const blob = await response.blob();
const bitmap = await createImageBitmap(blob);
ctx.drawImage(bitmap, 100, 78, -100, 50, 0, 0, 50, 50);
ctx.drawImage(bitmap, 100, 128, -100, -50, 50, 0, 50, 50);
@assert pixel 1,1 ==~ 0,255,0,255;
@assert pixel 1,48 ==~ 0,255,0,255;
@assert pixel 98,1 ==~ 0,255,0,255;
@assert pixel 98,48 ==~ 0,255,0,255;
@assert pixel 48,1 ==~ 0,255,0,255;
@assert pixel 48,48 ==~ 0,255,0,255;
@assert pixel 51,1 ==~ 0,255,0,255;
@assert pixel 51,48 ==~ 0,255,0,255;
@assert pixel 25,25 ==~ 0,255,0,255;
@assert pixel 75,25 ==~ 0,255,0,255;
expected: green
- name: 2d.drawImage.negativedest
desc: Negative destination width/height represents the correct rectangle
mozilla: {throws: !!null ''}
test_type: promise
code: |
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 50);
const response = await fetch('/images/ggrr-256x256.png');
const blob = await response.blob();
const bitmap = await createImageBitmap(blob);
ctx.drawImage(bitmap, 100, 78, 50, 50, 0, 50, 50, -50);
ctx.drawImage(bitmap, 100, 128, 50, -50, 100, 50, -50, -50);
@assert pixel 1,1 ==~ 0,255,0,255;
@assert pixel 1,48 ==~ 0,255,0,255;
@assert pixel 98,1 ==~ 0,255,0,255;
@assert pixel 98,48 ==~ 0,255,0,255;
@assert pixel 48,1 ==~ 0,255,0,255;
@assert pixel 48,48 ==~ 0,255,0,255;
@assert pixel 51,1 ==~ 0,255,0,255;
@assert pixel 51,48 ==~ 0,255,0,255;
@assert pixel 25,25 ==~ 0,255,0,255;
@assert pixel 75,25 ==~ 0,255,0,255;
expected: green
- name: 2d.drawImage.negativedir
desc: Negative dimensions do not affect the direction of the image
mozilla: {throws: !!null ''}
test_type: promise
code: |
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 50);
const response = await fetch('/images/ggrr-256x256.png');
const blob = await response.blob();
const bitmap = await createImageBitmap(blob);
ctx.drawImage(bitmap, 0, 178, 50, -100, 0, 0, 50, 100);
ctx.drawImage(bitmap, 0, 78, 50, 100, 50, 100, 50, -100);
@assert pixel 1,1 ==~ 0,255,0,255;
@assert pixel 1,48 ==~ 0,255,0,255;
@assert pixel 98,1 ==~ 0,255,0,255;
@assert pixel 98,48 ==~ 0,255,0,255;
@assert pixel 48,1 ==~ 0,255,0,255;
@assert pixel 48,48 ==~ 0,255,0,255;
@assert pixel 51,1 ==~ 0,255,0,255;
@assert pixel 51,48 ==~ 0,255,0,255;
@assert pixel 25,25 ==~ 0,255,0,255;
@assert pixel 75,25 ==~ 0,255,0,255;
expected: green
- name: 2d.drawImage.outsidesource
DISABLED: fix this to match the current spec (transparent black outside source)
canvas_types: ['OffscreenCanvas', 'Worker']
code: |
const response_red = await fetch('/images/red.png');
const blob_red = await response_red.blob();
const bitmap_red = await createImageBitmap(blob_red);
const response_green = await fetch('/images/green.png');
const blob_green = await response_green.blob();
const bitmap_green = await createImageBitmap(blob_green);
ctx.drawImage(bitmap_green, 10.5, 10.5, 89.5, 39.5, 0, 0, 100, 50);
ctx.drawImage(bitmap_green, 5.5, 5.5, -5.5, -5.5, 0, 0, 100, 50);
ctx.drawImage(bitmap_green, 100, 50, -5, -5, 0, 0, 100, 50);
@assert throws INDEX_SIZE_ERR ctx.drawImage(bitmap1, -0.001, 0, 100, 50, 0, 0, 100, 50);
@assert throws INDEX_SIZE_ERR ctx.drawImage(bitmap1, 0, -0.001, 100, 50, 0, 0, 100, 50);
@assert throws INDEX_SIZE_ERR ctx.drawImage(bitmap1, 0, 0, 100.001, 50, 0, 0, 100, 50);
@assert throws INDEX_SIZE_ERR ctx.drawImage(bitmap1, 0, 0, 100, 50.001, 0, 0, 100, 50);
@assert throws INDEX_SIZE_ERR ctx.drawImage(bitmap1, 50, 0, 50.001, 50, 0, 0, 100, 50); @moz-todo
@assert throws INDEX_SIZE_ERR ctx.drawImage(bitmap1, 0, 0, -5, 5, 0, 0, 100, 50);
@assert throws INDEX_SIZE_ERR ctx.drawImage(bitmap1, 0, 0, 5, -5, 0, 0, 100, 50);
@assert throws INDEX_SIZE_ERR ctx.drawImage(bitmap1, 110, 60, -20, -20, 0, 0, 100, 50);
@assert pixel 50,25 ==~ 0,255,0,255; @moz-todo
expected: green
- name: 2d.drawImage.broken
test_type: promise
code: |
const response = await fetch('/images/broken.png');
const blob = await response.blob();
await promise_rejects_dom(t, 'InvalidStateError', createImageBitmap(blob), 'The source image could not be decoded.');
expected: green
- name: 2d.drawImage.svg
desc: drawImage() of an SVG image
test_type: promise
canvas_types: ['HtmlCanvas', 'OffscreenCanvas']
code: |
const img = new Image();
const imageLoadPromise = new Promise((resolve, reject) => {
img.onload = () => resolve();
img.onerror = (err) => reject(err);
});
img.src = '/images/green.svg';
await imageLoadPromise;
ctx.drawImage(img, 0, 0);
_assertPixelApprox(canvas, 50, 25, 0, 255, 0, 255, 2);
expected: green
- name: 2d.drawImage.path
test_type: promise
code: |
ctx.fillStyle = '#0f0';
ctx.rect(0, 0, 100, 50);
const response = await fetch('/images/red.png');
const blob = await response.blob();
const bitmap = await createImageBitmap(blob);
ctx.drawImage(bitmap, 0, 0);
ctx.fill();
@assert pixel 50,25 ==~ 0,255,0,255;
expected: green
- name: 2d.drawImage.transform
test_type: promise
code: |
ctx.fillStyle = '#0f0';
ctx.fillRect(0, 0, 100, 50);
ctx.translate(100, 0);
const response = await fetch('/images/red.png');
const blob = await response.blob();
const bitmap = await createImageBitmap(blob);
ctx.drawImage(bitmap, 0, 0);
@assert pixel 50,25 ==~ 0,255,0,255;
expected: green
- name: 2d.drawImage.alpha
test_type: promise
code: |
ctx.fillStyle = '#0f0';
ctx.fillRect(0, 0, 100, 50);
ctx.globalAlpha = 0;
const response = await fetch('/images/red.png');
const blob = await response.blob();
const bitmap = await createImageBitmap(blob);
ctx.drawImage(bitmap, 0, 0);
@assert pixel 50,25 ==~ 0,255,0,255;
expected: green
- name: 2d.drawImage.clip
test_type: promise
code: |
ctx.fillStyle = '#0f0';
ctx.fillRect(0, 0, 100, 50);
ctx.rect(-10, -10, 1, 1);
ctx.clip();
const response = await fetch('/images/red.png');
const blob = await response.blob();
const bitmap = await createImageBitmap(blob);
ctx.fillStyle = '#0f0';
ctx.fillRect(0, 0, 100, 50);
ctx.rect(-10, -10, 1, 1);
ctx.clip();
ctx.drawImage(bitmap, 0, 0);
@assert pixel 50,25 ==~ 0,255,0,255;
expected: green
- name: 2d.drawImage.composite
test_type: promise
code: |
ctx.fillStyle = '#0f0';
ctx.fillRect(0, 0, 100, 50);
ctx.globalCompositeOperation = 'destination-over';
const response = await fetch('/images/red.png');
const blob = await response.blob();
const bitmap = await createImageBitmap(blob);
ctx.drawImage(bitmap, 0, 0);
@assert pixel 50,25 ==~ 0,255,0,255;
expected: green
- name: 2d.drawImage.nowrap
desc: Stretched images do not get pixels wrapping around the edges
test_type: promise
code: |
ctx.fillStyle = '#0f0';
ctx.fillRect(0, 0, 100, 50);
const response = await fetch('/images/redtransparent.png');
const blob = await response.blob();
const bitmap = await createImageBitmap(blob);
ctx.drawImage(bitmap, -1950, 0, 2000, 50);
@assert pixel 45,25 ==~ 0,255,0,255;
@assert pixel 50,25 ==~ 0,255,0,255;
@assert pixel 55,25 ==~ 0,255,0,255;
expected: green
- name: 2d.drawImage.nonfinite
desc: drawImage() with Infinity/NaN is ignored
test_type: promise
code: |
ctx.fillStyle = '#0f0';
ctx.fillRect(0, 0, 100, 50);
const response = await fetch('/images/redtransparent.png');
const blob = await response.blob();
const bitmap = await createImageBitmap(blob);
@nonfinite ctx.drawImage(<bitmap>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>);
@nonfinite ctx.drawImage(<bitmap>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <100 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>);
@nonfinite ctx.drawImage(<bitmap>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <100 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <100 Infinity -Infinity NaN>, <50 Infinity -Infinity NaN>);
@assert pixel 50,25 == 0,255,0,255;
expected: green
- name: 2d.drawImage.detachedcanvas
desc: drawImage with detached OffscreenCanvas as the source should throw exception
canvas_types: ['HtmlCanvas']
code: |
var canvas2 = new OffscreenCanvas(80, 80);
(new MessageChannel()).port1.postMessage(canvas2, [canvas2]);
@assert throws INVALID_STATE_ERR ctx.drawImage(canvas2, 0, 0);