gecko-dev/dom/canvas/test/test_canvas_path.html

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<!DOCTYPE HTML>
<title>Canvas Tests</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" href="/tests/SimpleTest/test.css">
<body>
<script>
SimpleTest.waitForExplicitFinish();
const Cc = SpecialPowers.Cc;
const Cr = SpecialPowers.Cr;
function isPixel(ctx, x,y, c, d) {
var pos = x + "," + y;
var color = c[0] + "," + c[1] + "," + c[2] + "," + c[3];
var pixel = ctx.getImageData(x, y, 1, 1);
var pr = pixel.data[0],
pg = pixel.data[1],
pb = pixel.data[2],
pa = pixel.data[3];
ok(c[0]-d <= pr && pr <= c[0]+d &&
c[1]-d <= pg && pg <= c[1]+d &&
c[2]-d <= pb && pb <= c[2]+d &&
c[3]-d <= pa && pa <= c[3]+d,
"pixel "+pos+" of "+ctx.canvas.id+" is "+pr+","+pg+","+pb+","+pa+"; expected "+color+" +/- "+d);
}
</script>
<p>Canvas test: test_drawClipPath_canvas</p>
<canvas id="c1" class="output" width="100" height="100">+
</canvas>
<script type="text/javascript">
function test_drawClipPath_canvas() {
var c = document.getElementById("c1");
var ctx = c.getContext("2d");
var path = new Path2D();
path.rect(0, 0, 100, 100);
path.rect(25, 25, 50, 50);
ctx.fillStyle = 'rgb(255,0,0)';
ctx.beginPath();
ctx.fillRect(0, 0, 100, 100);
ctx.fillStyle = 'rgb(0,255,0)';
ctx.save();
ctx.clip(path);
ctx.fillRect(0, 0, 100, 100);
isPixel(ctx, 50, 50, [0, 255, 0, 255], 5);
ctx.restore();
ctx.fillStyle = 'rgb(255,0,0)';
ctx.beginPath();
ctx.fillRect(0, 0, 100, 100);
ctx.fillStyle = 'rgb(0,255,0)';
ctx.save();
ctx.clip(path, 'nonzero');
ctx.fillRect(0, 0, 100, 100);
isPixel(ctx, 50, 50, [0, 255, 0, 255], 5);
ctx.restore();
ctx.fillStyle = 'rgb(255,0,0)';
ctx.beginPath();
ctx.fillRect(0, 0, 100, 100);
ctx.fillStyle = 'rgb(0,255,0)';
ctx.save();
ctx.clip(path, 'evenodd');
ctx.fillRect(0, 0, 100, 100);
isPixel(ctx, 50, 50, [255, 0, 0, 255], 5);
ctx.restore();
}
</script>
<p>Canvas test: test_drawFillPath_canvas</p>
<canvas id="c2" class="output" width="100" height="100">+
</canvas>
<script type="text/javascript">
function test_drawFillPath_canvas() {
var c = document.getElementById("c2");
var ctx = c.getContext("2d");
var path = new Path2D();
path.rect(0, 0, 100, 100);
path.rect(25, 25, 50, 50);
ctx.fillStyle = 'rgb(255,0,0)';
ctx.fillRect(0, 0, 100, 100);
ctx.fillStyle = 'rgb(0,255,0)';
ctx.fill(path);
isPixel(ctx, 50, 50, [0, 255, 0, 255], 5);
ctx.fillStyle = 'rgb(255,0,0)';
ctx.fillRect(0, 0, 100, 100);
ctx.fillStyle = 'rgb(0,255,0)';
ctx.fill(path, 'nonzero');
isPixel(ctx, 50, 50, [0, 255, 0, 255], 5);
ctx.fillStyle = 'rgb(255,0,0)';
ctx.fillRect(0, 0, 100, 100);
ctx.fillStyle = 'rgb(0,255,0)';
ctx.fill(path, 'evenodd');
isPixel(ctx, 50, 50, [255, 0, 0, 255], 5);
}
</script>
<p>Canvas test: test_drawStrokePath_canvas</p>
<canvas id="c3" class="output" width="100" height="100">+
</canvas>
<script type="text/javascript">
function test_drawStrokePath_canvas() {
var c = document.getElementById("c3");
var ctx = c.getContext("2d");
var path = new Path2D();
path.rect(0, 0, 100, 100);
path.rect(25, 25, 50, 50);
ctx.fillStyle = 'rgb(255,0,0)';
ctx.fillRect(0, 0, 100, 100);
ctx.strokeStyle = 'rgb(0,255,0)';
ctx.lineWidth = 5;
ctx.stroke(path);
isPixel(ctx, 0, 0, [0, 255, 0, 255], 5);
isPixel(ctx, 25, 25, [0, 255, 0, 255], 5);
isPixel(ctx, 10, 10, [255, 0, 0, 255], 5);
}
</script>
<p>Canvas test: test_large_canvas</p>
<canvas id="c4" class="output" width="10000" height="100">+
</canvas>
<script type="text/javascript">
function test_large_canvas() {
// test paths on large canvases. On certain platforms this will
// trigger retargeting of the backend
var c = document.getElementById("c4");
var ctx = c.getContext("2d");
var path = new Path2D();
path.rect(0, 0, 100, 100);
path.rect(25, 25, 50, 50);
ctx.fillStyle = 'rgb(255,0,0)';
ctx.fillRect(0, 0, 100, 100);
ctx.fillStyle = 'rgb(0,255,0)';
ctx.fill(path);
isPixel(ctx, 50, 50, [0, 255, 0, 255], 5);
ctx.fillStyle = 'rgb(255,0,0)';
ctx.fillRect(0, 0, 100, 100);
ctx.fillStyle = 'rgb(0,255,0)';
ctx.fill(path, 'nonzero');
isPixel(ctx, 50, 50, [0, 255, 0, 255], 5);
ctx.fillStyle = 'rgb(255,0,0)';
ctx.fillRect(0, 0, 100, 100);
ctx.fillStyle = 'rgb(0,255,0)';
ctx.fill(path, 'evenodd');
isPixel(ctx, 50, 50, [255, 0, 0, 255], 5);
}
</script>
<p>Canvas test: test_isPointInPath_canvas</p>
<canvas id="c5" class="output" width="100" height="100">+
</canvas>
<script type="text/javascript">
function shouldThrow(ctx, s) {
var _ok = false;
try {
eval(s);
} catch(e) {
_ok = true;
}
ok(_ok, s);
}
function shouldBeTrue(ctx, path, s) {
var _ok = eval(s);
ok(_ok, s);
}
function shouldBeFalse(ctx, path, s) {
var _ok = !eval(s);
ok(_ok, s);
}
function test_isPointInPath_canvas() {
var c = document.getElementById("c5");
var ctx = c.getContext("2d");
var path = new Path2D();
path.rect(0, 0, 100, 100);
path.rect(25, 25, 50, 50);
shouldBeTrue(ctx, path, "ctx.isPointInPath(path, 50, 50)");
shouldBeFalse(ctx, path, "ctx.isPointInPath(path, NaN, 50)");
shouldBeFalse(ctx, path, "ctx.isPointInPath(path, 50, NaN)");
path = new Path2D();
path.rect(0, 0, 100, 100);
path.rect(25, 25, 50, 50);
shouldBeTrue(ctx, path, "ctx.isPointInPath(path, 50, 50, 'nonzero')");
path = new Path2D();
path.rect(0, 0, 100, 100);
path.rect(25, 25, 50, 50);
shouldBeFalse(ctx, path, "ctx.isPointInPath(path, 50, 50, 'evenodd')");
shouldThrow(ctx, "ctx.isPointInPath(null, 50, 50)");
shouldThrow(ctx, "ctx.isPointInPath(null, 50, 50, 'nonzero')");
shouldThrow(ctx, "ctx.isPointInPath(null, 50, 50, 'evenodd')");
shouldThrow(ctx, "ctx.isPointInPath(path, 50, 50)");
shouldThrow(ctx, "ctx.isPointInPath(path, 50, 50, 'nonzero')");
shouldThrow(ctx, "ctx.isPointInPath(path, 50, 50, 'evenodd')");
shouldThrow(ctx, "ctx.isPointInPath([], 50, 50)");
shouldThrow(ctx, "ctx.isPointInPath([], 50, 50, 'nonzero')");
shouldThrow(ctx, "ctx.isPointInPath([], 50, 50, 'evenodd')");
shouldThrow(ctx, "ctx.isPointInPath({}, 50, 50)");
shouldThrow(ctx, "ctx.isPointInPath({}, 50, 50, 'nonzero')");
shouldThrow(ctx, "ctx.isPointInPath({}, 50, 50, 'evenodd')");
}
</script>
<p>Canvas test: test_isPointInStroke_canvas</p>
<canvas id="c6" class="output" width="100" height="100">+
</canvas>
<script type="text/javascript">
function test_isPointInStroke_canvas() {
var c = document.getElementById("c6");
var ctx = c.getContext("2d");
ctx.strokeStyle = '#0ff';
var path = new Path2D();
path.rect(20,20,100,100);
shouldBeTrue(ctx, path, "ctx.isPointInStroke(path,20,20)");
shouldBeTrue(ctx, path, "ctx.isPointInStroke(path,120,20)");
shouldBeTrue(ctx, path, "ctx.isPointInStroke(path,20,120)");
shouldBeTrue(ctx, path, "ctx.isPointInStroke(path,120,120)");
shouldBeTrue(ctx, path, "ctx.isPointInStroke(path,70,20)");
shouldBeTrue(ctx, path, "ctx.isPointInStroke(path,20,70)");
shouldBeTrue(ctx, path, "ctx.isPointInStroke(path,120,70)");
shouldBeTrue(ctx, path, "ctx.isPointInStroke(path,70,120)");
shouldBeFalse(ctx, path, "ctx.isPointInStroke(path,22,22)");
shouldBeFalse(ctx, path, "ctx.isPointInStroke(path,118,22)");
shouldBeFalse(ctx, path, "ctx.isPointInStroke(path,22,118)");
shouldBeFalse(ctx, path, "ctx.isPointInStroke(path,118,118)");
shouldBeFalse(ctx, path, "ctx.isPointInStroke(path,70,18)");
shouldBeFalse(ctx, path, "ctx.isPointInStroke(path,122,70)");
shouldBeFalse(ctx, path, "ctx.isPointInStroke(path,70,122)");
shouldBeFalse(ctx, path, "ctx.isPointInStroke(path,18,70)");
shouldBeFalse(ctx, path, "ctx.isPointInStroke(path,NaN,122)");
shouldBeFalse(ctx, path, "ctx.isPointInStroke(path,18,NaN)");
shouldThrow(ctx, "ctx.isPointInStroke(null,70,20)");
shouldThrow(ctx, "ctx.isPointInStroke([],20,70)");
shouldThrow(ctx, "ctx.isPointInStroke({},120,70)");
ctx.lineWidth = 10;
shouldBeTrue(ctx, path, "ctx.isPointInStroke(path,22,22)");
shouldBeTrue(ctx, path, "ctx.isPointInStroke(path,118,22)");
shouldBeTrue(ctx, path, "ctx.isPointInStroke(path,22,118)");
shouldBeTrue(ctx, path, "ctx.isPointInStroke(path,118,118)");
shouldBeTrue(ctx, path, "ctx.isPointInStroke(path,70,18)");
shouldBeTrue(ctx, path, "ctx.isPointInStroke(path,122,70)");
shouldBeTrue(ctx, path, "ctx.isPointInStroke(path,70,122)");
shouldBeTrue(ctx, path, "ctx.isPointInStroke(path,18,70)");
shouldBeFalse(ctx, path, "ctx.isPointInStroke(path,26,70)");
shouldBeFalse(ctx, path, "ctx.isPointInStroke(path,70,26)");
shouldBeFalse(ctx, path, "ctx.isPointInStroke(path,70,114)");
shouldBeFalse(ctx, path, "ctx.isPointInStroke(path,114,70)");
path = new Path2D();
path.moveTo(10,10);
path.lineTo(110,20);
path.lineTo(10,30);
ctx.lineJoin = "bevel";
shouldBeFalse(ctx, path, "ctx.isPointInStroke(path,113,20)");
ctx.miterLimit = 40.0;
ctx.lineJoin = "miter";
shouldBeTrue(ctx, path, "ctx.isPointInStroke(path,113,20)");
ctx.miterLimit = 2.0;
shouldBeFalse(ctx, path, "ctx.isPointInStroke(path,113,20)");
path = new Path2D();
path.moveTo(10,10);
path.lineTo(110,10);
ctx.lineCap = "butt";
shouldBeFalse(ctx, path, "ctx.isPointInStroke(path,112,10)");
ctx.lineCap = "round";
shouldBeTrue(ctx, path, "ctx.isPointInStroke(path,112,10)");
shouldBeFalse(ctx, path, "ctx.isPointInStroke(path,117,10)");
ctx.lineCap = "square";
shouldBeTrue(ctx, path, "ctx.isPointInStroke(path,112,10)");
shouldBeFalse(ctx, path, "ctx.isPointInStroke(path,117,10)");
ctx.lineCap = "butt";
ctx.setLineDash([10,10]);
shouldBeTrue(ctx, path, "ctx.isPointInStroke(path,15,10)");
shouldBeFalse(ctx, path, "ctx.isPointInStroke(path,25,10)");
shouldBeTrue(ctx, path, "ctx.isPointInStroke(path,35,10)");
ctx.lineDashOffset = 10;
shouldBeFalse(ctx, path, "ctx.isPointInStroke(path,15,10)");
shouldBeTrue(ctx, path, "ctx.isPointInStroke(path,25,10)");
shouldBeFalse(ctx, path, "ctx.isPointInStroke(path,35,10)");
}
</script>
<p>Canvas test: test_pathconstructor_canvas</p>
<canvas id="c7" class="output" width="200" height="100">+
</canvas>
<script type="text/javascript">
function test_pathconstructor_canvas() {
var c = document.getElementById("c7");
var ctx = c.getContext("2d");
var p = new Path2D("M100,0L200,0L200,100L100,100z");
ctx.fillStyle = 'blue';
ctx.fill(p);
isPixel(ctx, 105, 5, [0, 0, 255, 255], 0);
isPixel(ctx, 5, 5, [0, 0, 0, 0], 0);
// copy constructor. This should not crash.
var p1 = new Path2D();
var _p2 = new Path2D(p1);
p1.arcTo(0, 0, 1, 1, 2);
}
</script>
<p>Canvas test: test_addpath_canvas</p>
<canvas id="c8" class="output" width="200" height="200">+
</canvas>
<script type="text/javascript">
function test_addpath_canvas() {
var c = document.getElementById("c8");
var ctx = c.getContext("2d");
ctx.beginPath();
var p1 = new Path2D();
p1.rect(0,0,100,100);
var p2 = new Path2D();
p2.rect(0,100,100,100);
var m = ctx.currentTransform;
p1.addPath(p2, m);
ctx.fillStyle = 'yellow';
ctx.fill(p1);
isPixel(ctx, 0, 100, [255, 255, 0, 255], 0);
ctx.clearRect(0,0,200,200);
ctx.beginPath();
var p3 = new Path2D();
p3.rect(0,0,100,100);
var p4 = new Path2D();
p4.rect(0,100,100,100);
var m = document.createElementNS("http://www.w3.org/2000/svg", "svg").createSVGMatrix();
m.a = 1; m.b = 0;
m.c = 0; m.d = 1;
m.e = 100; m.f = -100;
p3.addPath(p4, m);
ctx.fillStyle = 'yellow';
ctx.fill(p3);
isPixel(ctx, 50, 50, [255, 255, 0, 255], 0);
isPixel(ctx, 150, 150, [0, 0, 0, 0], 0);
var p5 = new Path2D();
p5.rect(0,0,100,100);
shouldThrow(ctx, "p5.addPath(null, m)");
shouldThrow(ctx, "p5.addPath([], m)");
shouldThrow(ctx, "p5.addPath({}, m)");
p5 = p5.addPath(p5);
}
</script>
<script>
function runTests() {
try {
test_drawClipPath_canvas();
} catch(e) {
ok(false, "unexpected exception thrown in: test_drawClipPath_canvas");
throw e;
}
try {
test_drawFillPath_canvas();
} catch(e) {
ok(false, "unexpected exception thrown in: test_drawFillPath_canvas");
throw e;
}
try {
test_drawStrokePath_canvas();
} catch(e) {
ok(false, "unexpected exception thrown in: test_drawStrokePath_canvas");
throw e;
}
try {
test_large_canvas();
} catch(e) {
ok(false, "unexpected exception thrown in: test_large_canvas");
throw e;
}
try {
test_isPointInPath_canvas();
} catch(e) {
ok(false, "unexpected exception thrown in: test_isPointInPath_canvas");
throw e;
}
try {
test_isPointInStroke_canvas();
} catch(e) {
ok(false, "unexpected exception thrown in: test_isPointInStroke_canvas");
throw e;
}
try {
test_pathconstructor_canvas();
} catch(e) {
ok(false, "unexpected exception thrown in: test_pathconstructor_canvas");
throw e;
}
try {
test_addpath_canvas();
} catch(e) {
ok(false, "unexpected exception thrown in: test_addpath_canvas");
throw e;
}
SimpleTest.finish();
}
addLoadEvent(function() {
SpecialPowers.pushPrefEnv({"set":[["canvas.path.enabled", true]]}, runTests);
});
// Don't leak the world via the Path2D reference to its window.
document.all;
window.p = new Path2D();
</script>