зеркало из https://github.com/mozilla/gecko-dev.git
91 строка
2.6 KiB
HTML
91 строка
2.6 KiB
HTML
<!DOCTYPE html>
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<html>
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<!--
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https://bugzilla.mozilla.org/show_bug.cgi?id=1274663
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-->
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<head>
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<meta charset="utf-8">
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<title>Test device reset</title>
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<script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
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<link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css">
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</head>
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<body>
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<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1274663">Mozilla Bug 1274663</a>
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<script>
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var importObj = {};
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var sysInfo = Cc["@mozilla.org/system-info;1"].getService(Ci.nsIPropertyBag2);
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var windows = SpecialPowers.Services.ww.getWindowEnumerator();
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var windowutils;
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while (windows.hasMoreElements()) {
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windowutils = windows.getNext().windowUtils;
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}
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const PAGE_WIDTH = 200;
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const PAGE_HEIGHT = 200;
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// Helper functions
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function testCompositor(ctx) {
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takeWindowSnapshot(ctx);
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var testPassed = true;
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if (!verifyCanvasRendering(ctx)) {
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testPassed = false;
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}
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return testPassed;
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}
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function testPixel(ctx, x, y, r, g, b, a, fuzz) {
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var data = ctx.getImageData(x, y, 1, 1);
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if (Math.abs(data.data[0] - r) <= fuzz &&
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Math.abs(data.data[1] - g) <= fuzz &&
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Math.abs(data.data[2] - b) <= fuzz &&
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Math.abs(data.data[3] - a) <= fuzz) {
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return true;
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}
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return false;
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}
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function verifyCanvasRendering(ctx) {
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return testPixel(ctx, 20, 20, 140, 25, 86, 255, 0);
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}
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function takeWindowSnapshot(ctx) {
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var flags = ctx.DRAWWINDOW_DRAW_CARET | ctx.DRAWWINDOW_DRAW_VIEW | ctx.DRAWWINDOW_USE_WIDGET_LAYERS;
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ctx.drawWindow(window, 0, 0, PAGE_WIDTH, PAGE_HEIGHT, "rgb(140,25,86)", flags);
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}
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function createCanvas() {
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let canvas = document.createElementNS("http://www.w3.org/1999/xhtml", "canvas");
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canvas.setAttribute("width", PAGE_WIDTH + "px");
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canvas.setAttribute("height", PAGE_HEIGHT + "px");
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return canvas;
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}
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// Test runner code
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windowutils.triggerDeviceReset();
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SimpleTest.waitForExplicitFinish();
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window.addEventListener("MozAfterPaint", function paintHandle(e) {
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runCanvasTest();
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window.removeEventListener("MozAfterPaint", paintHandle);
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});
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function runCanvasTest() {
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const canvas = createCanvas();
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const ctx = canvas.getContext("2d");
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document.body.appendChild(canvas);
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ok(testCompositor(ctx), "Canvas did not get rendered after device reset");
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SimpleTest.finish();
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}
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</script>
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</body>
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</html>
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