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content/canvas/test/file_drawWindow_common.js@97036ab72558 (annotated)

content/canvas/test/file_drawWindow_common.js

Tue, 06 Jan 2015 21:39:09 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Tue, 06 Jan 2015 21:39:09 +0100

branch

TOR_BUG_9701

changeset 8

97036ab72558

permissions

-rw-r--r--

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

michael@0	1	function runDrawWindowTests(win, drawWindowFlags, transparentBackground) {
michael@0	2	const CANVAS_WIDTH = 200;
michael@0	3	const CANVAS_HEIGHT = 100;
michael@0	4
michael@0	5	function make_canvas() {
michael@0	6	var canvas = document.createElement("canvas");
michael@0	7	canvas.setAttribute("height", CANVAS_HEIGHT);
michael@0	8	canvas.setAttribute("width", CANVAS_WIDTH);
michael@0	9	document.body.appendChild(canvas);
michael@0	10	return canvas;
michael@0	11	}
michael@0	12
michael@0	13	var testCanvas = make_canvas();
michael@0	14	var refCanvas = make_canvas();
michael@0	15
michael@0	16	var testCx = testCanvas.getContext("2d");
michael@0	17	var refCx = refCanvas.getContext("2d");
michael@0	18
michael@0	19	var testWrapCx = SpecialPowers.wrap(testCx);
michael@0	20	var refWrapCx = SpecialPowers.wrap(refCx);
michael@0	21
michael@0	22	function clearRef(fillStyle) {
michael@0	23	refCx.setTransform(1, 0, 0, 1, 0, 0);
michael@0	24	refCx.fillStyle = fillStyle;
michael@0	25	refCx.fillRect(0, 0, CANVAS_WIDTH, CANVAS_HEIGHT);
michael@0	26	}
michael@0	27	function clearTest(fillStyle) {
michael@0	28	testCx.setTransform(1, 0, 0, 1, 0, 0);
michael@0	29	testCx.fillStyle = fillStyle;
michael@0	30	testCx.fillRect(0, 0, CANVAS_WIDTH, CANVAS_HEIGHT);
michael@0	31	}
michael@0	32	function clear(fillStyle) {
michael@0	33	clearRef(fillStyle);
michael@0	34	clearTest(fillStyle);
michael@0	35	}
michael@0	36
michael@0	37	// Basic tests of drawing the whole document on a background
michael@0	38
michael@0	39	clear("white");
michael@0	40	testWrapCx.drawWindow(win, 0, 0, CANVAS_WIDTH, CANVAS_HEIGHT,
michael@0	41	"rgb(255, 255, 255)", drawWindowFlags);
michael@0	42	refCx.fillStyle = "fuchsia";
michael@0	43	refCx.fillRect(10, 10, 20, 20);
michael@0	44	refCx.fillStyle = "aqua";
michael@0	45	refCx.fillRect(50, 10, 20, 20);
michael@0	46	refCx.fillStyle = "yellow";
michael@0	47	refCx.fillRect(90, 10, 20, 20);
michael@0	48	assertSnapshots(testCanvas, refCanvas, true /* equal */,
michael@0	49	"full draw of source on white background", "reference");
michael@0	50
michael@0	51	clearTest("white");
michael@0	52	testWrapCx.drawWindow(win, 0, 0, CANVAS_WIDTH, CANVAS_HEIGHT,
michael@0	53	"rgb(255, 255, 0)", drawWindowFlags);
michael@0	54	assertSnapshots(testCanvas, refCanvas,
michael@0	55	!transparentBackground /* not equal */,
michael@0	56	"full draw of source on yellow background", "reference");
michael@0	57
michael@0	58	clearRef("yellow");
michael@0	59	refCx.fillStyle = "fuchsia";
michael@0	60	refCx.fillRect(10, 10, 20, 20);
michael@0	61	refCx.fillStyle = "aqua";
michael@0	62	refCx.fillRect(50, 10, 20, 20);
michael@0	63	refCx.fillStyle = "yellow";
michael@0	64	refCx.fillRect(90, 10, 20, 20);
michael@0	65
michael@0	66	assertSnapshots(testCanvas, refCanvas, transparentBackground /* equal */,
michael@0	67	"full draw of source on yellow background", "reference");
michael@0	68
michael@0	69	// Test drawing a region within the document.
michael@0	70
michael@0	71	clear("white");
michael@0	72
michael@0	73	testCx.translate(17, 31);
michael@0	74	testWrapCx.drawWindow(win, 40, 0, 40, 40,
michael@0	75	"white", drawWindowFlags);
michael@0	76
michael@0	77	refCx.fillStyle = "aqua";
michael@0	78	refCx.fillRect(17 + 10, 31 + 10, 20, 20);
michael@0	79
michael@0	80	assertSnapshots(testCanvas, refCanvas, true /* equal */,
michael@0	81	"draw of subrect of source with matching background",
michael@0	82	"reference");
michael@0	83
michael@0	84	clear("blue");
michael@0	85
michael@0	86	testCx.translate(17, 31);
michael@0	87	testWrapCx.drawWindow(win, 40, 0, 35, 45,
michael@0	88	"green", drawWindowFlags);
michael@0	89
michael@0	90	if (transparentBackground) {
michael@0	91	refCx.fillStyle = "green";
michael@0	92	} else {
michael@0	93	refCx.fillStyle = "white";
michael@0	94	}
michael@0	95	refCx.fillRect(17, 31, 35, 45);
michael@0	96	refCx.fillStyle = "aqua";
michael@0	97	refCx.fillRect(17 + 10, 31 + 10, 20, 20);
michael@0	98
michael@0	99	assertSnapshots(testCanvas, refCanvas, true /* equal */,
michael@0	100	"draw of subrect of source with different background",
michael@0	101	"reference");
michael@0	102
michael@0	103	// Test transparency of background not disturbing what is behind
michael@0	104	clear("blue");
michael@0	105
michael@0	106	testCx.translate(17, 31);
michael@0	107	testWrapCx.drawWindow(win, 40, 0, 35, 45,
michael@0	108	"transparent", drawWindowFlags);
michael@0	109
michael@0	110	if (!transparentBackground) {
michael@0	111	refCx.fillStyle = "white";
michael@0	112	refCx.fillRect(17, 31, 35, 45);
michael@0	113	}
michael@0	114	refCx.fillStyle = "aqua";
michael@0	115	refCx.fillRect(17 + 10, 31 + 10, 20, 20);
michael@0	116
michael@0	117	assertSnapshots(testCanvas, refCanvas, true /* equal */,
michael@0	118	"draw of subrect of source with different background",
michael@0	119	"reference");
michael@0	120
michael@0	121	// Test that multiple drawWindow calls draw at correct positions.
michael@0	122	clear("blue");
michael@0	123
michael@0	124	testCx.translate(9, 3);
michael@0	125	// 5, 8 is 5, 2 from the corner of the fuchsia square
michael@0	126	testWrapCx.drawWindow(win, 5, 8, 30, 25,
michael@0	127	"maroon", drawWindowFlags);
michael@0	128	// 35, 0 is 15, 10 from the corner of the aqua square
michael@0	129	testWrapCx.drawWindow(win, 35, 0, 50, 40,
michael@0	130	"transparent", drawWindowFlags);
michael@0	131	testCx.translate(15, 0);
michael@0	132	// 85, 5 is 5, 5 from the corner of the yellow square
michael@0	133	testWrapCx.drawWindow(win, 85, 5, 30, 25,
michael@0	134	"transparent", drawWindowFlags);
michael@0	135
michael@0	136	if (transparentBackground) {
michael@0	137	refCx.fillStyle = "maroon";
michael@0	138	refCx.fillRect(9, 3, 30, 25);
michael@0	139	refCx.fillStyle = "fuchsia";
michael@0	140	refCx.fillRect(9 + 5, 3 + 2, 20, 20);
michael@0	141	} else {
michael@0	142	refCx.fillStyle = "white";
michael@0	143	refCx.fillRect(9, 3, 50, 40);
michael@0	144	}
michael@0	145	refCx.fillStyle = "aqua";
michael@0	146	refCx.fillRect(9 + 15, 3 + 10, 20, 20);
michael@0	147	if (!transparentBackground) {
michael@0	148	refCx.fillStyle = "white";
michael@0	149	refCx.fillRect(9 + 15, 3, 30, 25);
michael@0	150	}
michael@0	151	refCx.fillStyle = "yellow";
michael@0	152	refCx.fillRect(9 + 15 + 5, 3 + 0 + 5, 20, 20);
michael@0	153
michael@0	154	assertSnapshots(testCanvas, refCanvas, true /* equal */,
michael@0	155	"multiple drawWindow calls on top of each other",
michael@0	156	"reference");
michael@0	157	}