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qtdeclarative/tests/auto/quick/qquickcanvasitem/data/tst_transform.qml

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import QtQuick 2.0
CanvasTestCase {
id:testCase
name: "transform"
function init_data() { return testData("2d"); }
function test_order(row) {
var canvas = createCanvasObject(row);
tryVerify(function() { return canvas.available; });
var ctx = canvas.getContext('2d');
ctx.reset();
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 50);
ctx.scale(2, 1);
ctx.rotate(Math.PI / 2);
ctx.fillStyle = '#0f0';
ctx.fillRect(0, -50, 50, 50);
comparePixel(ctx, 75,25, 0,255,0,255);
canvas.destroy()
}
function test_rotate(row) {
var canvas = createCanvasObject(row);
tryVerify(function() { return canvas.available; });
var ctx = canvas.getContext('2d');
ctx.reset();
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 50);
ctx.rotate(Math.PI / 2);
ctx.fillStyle = '#0f0';
ctx.fillRect(0, -100, 50, 100);
comparePixel(ctx, 50,25, 0,255,0,255);
ctx.reset();
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 50);
ctx.translate(100, 10);
ctx.rotate(Infinity);
ctx.rotate(-Infinity);
ctx.rotate(NaN);
ctx.fillStyle = '#0f0';
ctx.fillRect(-100, -10, 100, 50);
comparePixel(ctx, 50,25, 0,255,0,255);
ctx.reset();
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 50);
ctx.rotate(Math.PI); // should fail obviously if this is 3.1 degrees
ctx.fillStyle = '#0f0';
ctx.fillRect(-100, -50, 100, 50);
comparePixel(ctx, 50,25, 0,255,0,255);
ctx.reset();
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 50);
ctx.rotate(Math.PI * (1 + 4096)); // == pi (mod 2*pi)
// We need about pi +/- 0.001 in order to get correct-looking results
// 32-bit floats can store pi*4097 with precision 2^-10, so that should
// be safe enough on reasonable implementations
ctx.fillStyle = '#0f0';
ctx.fillRect(-100, -50, 100, 50);
comparePixel(ctx, 50,25, 0,255,0,255);
comparePixel(ctx, 98,2, 0,255,0,255);
comparePixel(ctx, 98,47, 0,255,0,255);
ctx.reset();
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 50);
ctx.rotate(-Math.PI * (1 + 4096));
ctx.fillStyle = '#0f0';
ctx.fillRect(-100, -50, 100, 50);
comparePixel(ctx, 50,25, 0,255,0,255);
comparePixel(ctx, 98,2, 0,255,0,255);
comparePixel(ctx, 98,47, 0,255,0,255);
ctx.reset();
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 50);
ctx.rotate(0);
ctx.fillStyle = '#0f0';
ctx.fillRect(0, 0, 100, 50);
comparePixel(ctx, 50,25, 0,255,0,255);
canvas.destroy()
}
function test_scale(row) {
var canvas = createCanvasObject(row);
tryVerify(function() { return canvas.available; });
var ctx = canvas.getContext('2d');
ctx.reset();
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 50);
ctx.scale(2, 4);
ctx.fillStyle = '#0f0';
ctx.fillRect(0, 0, 50, 12.5);
comparePixel(ctx, 90,40, 0,255,0,255);
ctx.reset();
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 50);
ctx.scale(1e5, 1e5);
ctx.fillStyle = '#0f0';
ctx.fillRect(0, 0, 1, 1);
comparePixel(ctx, 50,25, 0,255,0,255);
ctx.reset();
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 50);
ctx.scale(Math.sqrt(2), Math.sqrt(2));
ctx.scale(Math.sqrt(2), Math.sqrt(2));
ctx.fillStyle = '#0f0';
ctx.fillRect(0, 0, 50, 25);
comparePixel(ctx, 90,40, 0,255,0,255);
ctx.reset();
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 50);
ctx.save();
ctx.scale(-1, 1);
ctx.fillStyle = '#0f0';
ctx.fillRect(-50, 0, 50, 50);
ctx.restore();
ctx.save();
ctx.scale(1, -1);
ctx.fillStyle = '#0f0';
ctx.fillRect(50, -50, 50, 50);
ctx.restore();
comparePixel(ctx, 25,25, 0,255,0,255);
comparePixel(ctx, 75,25, 0,255,0,255);
ctx.reset();
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 50);
ctx.translate(100, 10);
ctx.scale(Infinity, 0.1);
ctx.scale(-Infinity, 0.1);
ctx.scale(NaN, 0.1);
ctx.scale(0.1, Infinity);
ctx.scale(0.1, -Infinity);
ctx.scale(0.1, NaN);
ctx.scale(Infinity, Infinity);
ctx.fillStyle = '#0f0';
ctx.fillRect(-100, -10, 100, 50);
comparePixel(ctx, 50,25, 0,255,0,255);
ctx.reset();
ctx.fillStyle = '#0f0';
ctx.fillRect(0, 0, 100, 50);
ctx.save();
ctx.translate(50, 0);
ctx.scale(0, 1);
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 50);
ctx.restore();
ctx.save();
ctx.translate(0, 25);
ctx.scale(1, 0);
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 50);
ctx.restore();
// Firefox has a bug where it renders the canvas as empty and toDataURL throws an exception
canvas.toDataURL();
comparePixel(ctx, 50,25, 0,255,0,255);
canvas.destroy()
}
function test_setTransform(row) {
var canvas = createCanvasObject(row);
tryVerify(function() { return canvas.available; });
var ctx = canvas.getContext('2d');
ctx.reset();
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 50);
ctx.setTransform(1/2,0, 0,1/2, 0,0);
ctx.setTransform(2,0, 0,2, 0,0);
ctx.fillStyle = '#0f0';
ctx.fillRect(0, 0, 50, 25);
comparePixel(ctx, 75,35, 0,255,0,255);
ctx.reset();
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 50);
ctx.translate(100, 10);
ctx.setTransform(Infinity, 0, 0, 0, 0, 0);
ctx.setTransform(-Infinity, 0, 0, 0, 0, 0);
ctx.setTransform(NaN, 0, 0, 0, 0, 0);
ctx.setTransform(0, Infinity, 0, 0, 0, 0);
ctx.setTransform(0, -Infinity, 0, 0, 0, 0);
ctx.setTransform(0, NaN, 0, 0, 0, 0);
ctx.setTransform(0, 0, Infinity, 0, 0, 0);
ctx.setTransform(0, 0, -Infinity, 0, 0, 0);
ctx.setTransform(0, 0, NaN, 0, 0, 0);
ctx.setTransform(0, 0, 0, Infinity, 0, 0);
ctx.setTransform(0, 0, 0, -Infinity, 0, 0);
ctx.setTransform(0, 0, 0, NaN, 0, 0);
ctx.setTransform(0, 0, 0, 0, Infinity, 0);
ctx.setTransform(0, 0, 0, 0, -Infinity, 0);
ctx.setTransform(0, 0, 0, 0, NaN, 0);
ctx.setTransform(0, 0, 0, 0, 0, Infinity);
ctx.setTransform(0, 0, 0, 0, 0, -Infinity);
ctx.setTransform(0, 0, 0, 0, 0, NaN);
ctx.setTransform(Infinity, Infinity, 0, 0, 0, 0);
ctx.setTransform(Infinity, Infinity, Infinity, 0, 0, 0);
ctx.setTransform(Infinity, Infinity, Infinity, Infinity, 0, 0);
ctx.setTransform(Infinity, Infinity, Infinity, Infinity, Infinity, 0);
ctx.setTransform(Infinity, Infinity, Infinity, Infinity, Infinity, Infinity);
ctx.setTransform(Infinity, Infinity, Infinity, Infinity, 0, Infinity);
ctx.setTransform(Infinity, Infinity, Infinity, 0, Infinity, 0);
ctx.setTransform(Infinity, Infinity, Infinity, 0, Infinity, Infinity);
ctx.setTransform(Infinity, Infinity, Infinity, 0, 0, Infinity);
ctx.setTransform(Infinity, Infinity, 0, Infinity, 0, 0);
ctx.setTransform(Infinity, Infinity, 0, Infinity, Infinity, 0);
ctx.setTransform(Infinity, Infinity, 0, Infinity, Infinity, Infinity);
ctx.setTransform(Infinity, Infinity, 0, Infinity, 0, Infinity);
ctx.setTransform(Infinity, Infinity, 0, 0, Infinity, 0);
ctx.setTransform(Infinity, Infinity, 0, 0, Infinity, Infinity);
ctx.setTransform(Infinity, Infinity, 0, 0, 0, Infinity);
ctx.setTransform(Infinity, 0, Infinity, 0, 0, 0);
ctx.setTransform(Infinity, 0, Infinity, Infinity, 0, 0);
ctx.setTransform(Infinity, 0, Infinity, Infinity, Infinity, 0);
ctx.setTransform(Infinity, 0, Infinity, Infinity, Infinity, Infinity);
ctx.setTransform(Infinity, 0, Infinity, Infinity, 0, Infinity);
ctx.setTransform(Infinity, 0, Infinity, 0, Infinity, 0);
ctx.setTransform(Infinity, 0, Infinity, 0, Infinity, Infinity);
ctx.setTransform(Infinity, 0, Infinity, 0, 0, Infinity);
ctx.setTransform(Infinity, 0, 0, Infinity, 0, 0);
ctx.setTransform(Infinity, 0, 0, Infinity, Infinity, 0);
ctx.setTransform(Infinity, 0, 0, Infinity, Infinity, Infinity);
ctx.setTransform(Infinity, 0, 0, Infinity, 0, Infinity);
ctx.setTransform(Infinity, 0, 0, 0, Infinity, 0);
ctx.setTransform(Infinity, 0, 0, 0, Infinity, Infinity);
ctx.setTransform(Infinity, 0, 0, 0, 0, Infinity);
ctx.setTransform(0, Infinity, Infinity, 0, 0, 0);
ctx.setTransform(0, Infinity, Infinity, Infinity, 0, 0);
ctx.setTransform(0, Infinity, Infinity, Infinity, Infinity, 0);
ctx.setTransform(0, Infinity, Infinity, Infinity, Infinity, Infinity);
ctx.setTransform(0, Infinity, Infinity, Infinity, 0, Infinity);
ctx.setTransform(0, Infinity, Infinity, 0, Infinity, 0);
ctx.setTransform(0, Infinity, Infinity, 0, Infinity, Infinity);
ctx.setTransform(0, Infinity, Infinity, 0, 0, Infinity);
ctx.setTransform(0, Infinity, 0, Infinity, 0, 0);
ctx.setTransform(0, Infinity, 0, Infinity, Infinity, 0);
ctx.setTransform(0, Infinity, 0, Infinity, Infinity, Infinity);
ctx.setTransform(0, Infinity, 0, Infinity, 0, Infinity);
ctx.setTransform(0, Infinity, 0, 0, Infinity, 0);
ctx.setTransform(0, Infinity, 0, 0, Infinity, Infinity);
ctx.setTransform(0, Infinity, 0, 0, 0, Infinity);
ctx.setTransform(0, 0, Infinity, Infinity, 0, 0);
ctx.setTransform(0, 0, Infinity, Infinity, Infinity, 0);
ctx.setTransform(0, 0, Infinity, Infinity, Infinity, Infinity);
ctx.setTransform(0, 0, Infinity, Infinity, 0, Infinity);
ctx.setTransform(0, 0, Infinity, 0, Infinity, 0);
ctx.setTransform(0, 0, Infinity, 0, Infinity, Infinity);
ctx.setTransform(0, 0, Infinity, 0, 0, Infinity);
ctx.setTransform(0, 0, 0, Infinity, Infinity, 0);
ctx.setTransform(0, 0, 0, Infinity, Infinity, Infinity);
ctx.setTransform(0, 0, 0, Infinity, 0, Infinity);
ctx.setTransform(0, 0, 0, 0, Infinity, Infinity);
ctx.fillStyle = '#0f0';
ctx.fillRect(-100, -10, 100, 50);
comparePixel(ctx, 50,25, 0,255,0,255);
ctx.reset();
// Create green with a red square ring inside it
ctx.fillStyle = '#0f0';
ctx.fillRect(0, 0, 100, 50);
ctx.fillStyle = '#f00';
ctx.fillRect(20, 10, 60, 30);
ctx.fillStyle = '#0f0';
ctx.fillRect(40, 20, 20, 10);
// Draw a skewed shape to fill that gap, to make sure it is aligned correctly
ctx.setTransform(1,4, 2,3, 5,6);
// Post-transform coordinates:
// [[20,10],[80,10],[80,40],[20,40],[20,10],[40,20],[40,30],[60,30],[60,20],[40,20],[20,10]];
// Hence pre-transform coordinates:
var pts=[[-7.4,11.2],[-43.4,59.2],[-31.4,53.2],[4.6,5.2],[-7.4,11.2],
[-15.4,25.2],[-11.4,23.2],[-23.4,39.2],[-27.4,41.2],[-15.4,25.2],
[-7.4,11.2]];
ctx.beginPath();
ctx.moveTo(pts[0][0], pts[0][1]);
for (var i = 0; i < pts.length; ++i)
ctx.lineTo(pts[i][0], pts[i][1]);
ctx.fill();
/*
//FIXME:
comparePixel(ctx, 21,11, 0,255,0,255);
comparePixel(ctx, 79,11, 0,255,0,255);
comparePixel(ctx, 21,39, 0,255,0,255);
comparePixel(ctx, 79,39, 0,255,0,255);
comparePixel(ctx, 39,19, 0,255,0,255);
comparePixel(ctx, 61,19, 0,255,0,255);
comparePixel(ctx, 39,31, 0,255,0,255);
comparePixel(ctx, 61,31, 0,255,0,255);
*/
ctx.reset();
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 50);
ctx.transform(1,0, 0,1, 0,0);
ctx.fillStyle = '#0f0';
ctx.fillRect(0, 0, 100, 50);
comparePixel(ctx, 50,25, 0,255,0,255);
canvas.destroy()
}
function test_transform(row) {
var canvas = createCanvasObject(row);
tryVerify(function() { return canvas.available; });
var ctx = canvas.getContext('2d');
ctx.reset();
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 50);
ctx.transform(1,2, 3,4, 5,6);
ctx.transform(-2,1, 3/2,-1/2, 1,-2);
ctx.fillStyle = '#0f0';
ctx.fillRect(0, 0, 100, 50);
comparePixel(ctx, 50,25, 0,255,0,255);
ctx.reset();
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 50);
ctx.translate(100, 10);
ctx.transform(Infinity, 0, 0, 0, 0, 0);
ctx.transform(-Infinity, 0, 0, 0, 0, 0);
ctx.transform(NaN, 0, 0, 0, 0, 0);
ctx.transform(0, Infinity, 0, 0, 0, 0);
ctx.transform(0, -Infinity, 0, 0, 0, 0);
ctx.transform(0, NaN, 0, 0, 0, 0);
ctx.transform(0, 0, Infinity, 0, 0, 0);
ctx.transform(0, 0, -Infinity, 0, 0, 0);
ctx.transform(0, 0, NaN, 0, 0, 0);
ctx.transform(0, 0, 0, Infinity, 0, 0);
ctx.transform(0, 0, 0, -Infinity, 0, 0);
ctx.transform(0, 0, 0, NaN, 0, 0);
ctx.transform(0, 0, 0, 0, Infinity, 0);
ctx.transform(0, 0, 0, 0, -Infinity, 0);
ctx.transform(0, 0, 0, 0, NaN, 0);
ctx.transform(0, 0, 0, 0, 0, Infinity);
ctx.transform(0, 0, 0, 0, 0, -Infinity);
ctx.transform(0, 0, 0, 0, 0, NaN);
ctx.transform(Infinity, Infinity, 0, 0, 0, 0);
ctx.transform(Infinity, Infinity, Infinity, 0, 0, 0);
ctx.transform(Infinity, Infinity, Infinity, Infinity, 0, 0);
ctx.transform(Infinity, Infinity, Infinity, Infinity, Infinity, 0);
ctx.transform(Infinity, Infinity, Infinity, Infinity, Infinity, Infinity);
ctx.transform(Infinity, Infinity, Infinity, Infinity, 0, Infinity);
ctx.transform(Infinity, Infinity, Infinity, 0, Infinity, 0);
ctx.transform(Infinity, Infinity, Infinity, 0, Infinity, Infinity);
ctx.transform(Infinity, Infinity, Infinity, 0, 0, Infinity);
ctx.transform(Infinity, Infinity, 0, Infinity, 0, 0);
ctx.transform(Infinity, Infinity, 0, Infinity, Infinity, 0);
ctx.transform(Infinity, Infinity, 0, Infinity, Infinity, Infinity);
ctx.transform(Infinity, Infinity, 0, Infinity, 0, Infinity);
ctx.transform(Infinity, Infinity, 0, 0, Infinity, 0);
ctx.transform(Infinity, Infinity, 0, 0, Infinity, Infinity);
ctx.transform(Infinity, Infinity, 0, 0, 0, Infinity);
ctx.transform(Infinity, 0, Infinity, 0, 0, 0);
ctx.transform(Infinity, 0, Infinity, Infinity, 0, 0);
ctx.transform(Infinity, 0, Infinity, Infinity, Infinity, 0);
ctx.transform(Infinity, 0, Infinity, Infinity, Infinity, Infinity);
ctx.transform(Infinity, 0, Infinity, Infinity, 0, Infinity);
ctx.transform(Infinity, 0, Infinity, 0, Infinity, 0);
ctx.transform(Infinity, 0, Infinity, 0, Infinity, 0);
ctx.transform(Infinity, 0, Infinity, 0, Infinity, Infinity);
ctx.transform(Infinity, 0, Infinity, 0, 0, Infinity);
ctx.transform(Infinity, 0, 0, Infinity, 0, 0);
ctx.transform(Infinity, 0, 0, Infinity, Infinity, 0);
ctx.transform(Infinity, 0, 0, Infinity, Infinity, Infinity);
ctx.transform(Infinity, 0, 0, Infinity, 0, Infinity);
ctx.transform(Infinity, 0, 0, 0, Infinity, 0);
ctx.transform(Infinity, 0, 0, 0, Infinity, Infinity);
ctx.transform(Infinity, 0, 0, 0, 0, Infinity);
ctx.transform(0, Infinity, Infinity, 0, 0, 0);
ctx.transform(0, Infinity, Infinity, Infinity, 0, 0);
ctx.transform(0, Infinity, Infinity, Infinity, Infinity, 0);
ctx.transform(0, Infinity, Infinity, Infinity, Infinity, Infinity);
ctx.transform(0, Infinity, Infinity, Infinity, 0, Infinity);
ctx.transform(0, Infinity, Infinity, 0, Infinity, 0);
ctx.transform(0, Infinity, Infinity, 0, Infinity, Infinity);
ctx.transform(0, Infinity, Infinity, 0, 0, Infinity);
ctx.transform(0, Infinity, 0, Infinity, 0, 0);
ctx.transform(0, Infinity, 0, Infinity, Infinity, 0);
ctx.transform(0, Infinity, 0, Infinity, Infinity, Infinity);
ctx.transform(0, Infinity, 0, Infinity, 0, Infinity);
ctx.transform(0, Infinity, 0, 0, Infinity, 0);
ctx.transform(0, Infinity, 0, 0, Infinity, Infinity);
ctx.transform(0, Infinity, 0, 0, 0, Infinity);
ctx.transform(0, 0, Infinity, Infinity, 0, 0);
ctx.transform(0, 0, Infinity, Infinity, Infinity, 0);
ctx.transform(0, 0, Infinity, Infinity, Infinity, Infinity);
ctx.transform(0, 0, Infinity, Infinity, 0, Infinity);
ctx.transform(0, 0, Infinity, 0, Infinity, 0);
ctx.transform(0, 0, Infinity, 0, Infinity, Infinity);
ctx.transform(0, 0, Infinity, 0, 0, Infinity);
ctx.transform(0, 0, 0, Infinity, Infinity, 0);
ctx.transform(0, 0, 0, Infinity, Infinity, Infinity);
ctx.transform(0, 0, 0, Infinity, 0, Infinity);
ctx.transform(0, 0, 0, 0, Infinity, Infinity);
ctx.fillStyle = '#0f0';
ctx.fillRect(-100, -10, 100, 50);
comparePixel(ctx, 50,25, 0,255,0,255);
ctx.reset();
// Create green with a red square ring inside it
ctx.fillStyle = '#0f0';
ctx.fillRect(0, 0, 100, 50);
ctx.fillStyle = '#f00';
ctx.fillRect(20, 10, 60, 30);
ctx.fillStyle = '#0f0';
ctx.fillRect(40, 20, 20, 10);
// Draw a skewed shape to fill that gap, to make sure it is aligned correctly
ctx.transform(1,4, 2,3, 5,6);
// Post-transform coordinates:
// [[20,10],[80,10],[80,40],[20,40],[20,10],[40,20],[40,30],[60,30],[60,20],[40,20],[20,10]];
// Hence pre-transform coordinates:
var pts=[[-7.4,11.2],[-43.4,59.2],[-31.4,53.2],[4.6,5.2],[-7.4,11.2],
[-15.4,25.2],[-11.4,23.2],[-23.4,39.2],[-27.4,41.2],[-15.4,25.2],
[-7.4,11.2]];
ctx.beginPath();
ctx.moveTo(pts[0][0], pts[0][1]);
for (var i = 0; i < pts.length; ++i)
ctx.lineTo(pts[i][0], pts[i][1]);
ctx.fill();
/*
//FIXME:
comparePixel(ctx, 21,11, 0,255,0,255);
comparePixel(ctx, 79,11, 0,255,0,255);
comparePixel(ctx, 21,39, 0,255,0,255);
comparePixel(ctx, 79,39, 0,255,0,255);
comparePixel(ctx, 39,19, 0,255,0,255);
comparePixel(ctx, 61,19, 0,255,0,255);
comparePixel(ctx, 39,31, 0,255,0,255);
comparePixel(ctx, 61,31, 0,255,0,255);
*/
canvas.destroy()
}
function test_translate(row) {
var canvas = createCanvasObject(row);
tryVerify(function() { return canvas.available; });
var ctx = canvas.getContext('2d');
ctx.reset();
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 50);
ctx.translate(100, 50);
ctx.fillStyle = '#0f0';
ctx.fillRect(-100, -50, 100, 50);
comparePixel(ctx, 90,40, 0,255,0,255);
ctx.reset();
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 50);
ctx.translate(100, 10);
ctx.translate(Infinity, 0.1);
ctx.translate(-Infinity, 0.1);
ctx.translate(NaN, 0.1);
ctx.translate(0.1, Infinity);
ctx.translate(0.1, -Infinity);
ctx.translate(0.1, NaN);
ctx.translate(Infinity, Infinity);
ctx.fillStyle = '#0f0';
ctx.fillRect(-100, -10, 100, 50);
comparePixel(ctx, 50,25, 0,255,0,255);
canvas.destroy()
}
}
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