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https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
ed51aecaa3
1. Make the test more solid 2. Postpone the second |takeScreenshot| right after the |iframe1| is onload again 3. Remove redundant |numLoaded| by assigning |iframe1.src| first.
119 lines
3.5 KiB
JavaScript
119 lines
3.5 KiB
JavaScript
/* Any copyright is dedicated to the public domain.
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http://creativecommons.org/publicdomain/zero/1.0/ */
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// Test the getScreenshot property for mozbrowser
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"use strict";
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SimpleTest.waitForExplicitFinish();
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browserElementTestHelpers.setEnabledPref(true);
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browserElementTestHelpers.addPermission();
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function runTest() {
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var iframe1 = document.createElement('iframe');
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SpecialPowers.wrap(iframe1).mozbrowser = true;
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iframe1.src = 'data:text/html,<html>' +
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'<body style="background:green">hello</body></html>';
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document.body.appendChild(iframe1);
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var screenshotImageDatas = [];
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function screenshotTaken(aScreenshotImageData) {
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screenshotImageDatas.push(aScreenshotImageData);
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if (screenshotImageDatas.length === 1) {
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ok(true, 'Got initial non blank screenshot');
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var view = aScreenshotImageData.data;
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if (view[3] !== 255) {
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ok(false, 'The first pixel of initial screenshot is not opaque');
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SimpleTest.finish();
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return;
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}
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ok(true, 'Verified the first pixel of initial screenshot is opaque');
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iframe1.src = 'data:text/html,<html>' +
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'<body style="background:transparent">hello</body></html>';
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iframe1.addEventListener('mozbrowserloadend', ()=>takeScreenshot('image/png'));
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}
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else if (screenshotImageDatas.length === 2) {
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ok(true, 'Got updated screenshot after source page changed');
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var view = aScreenshotImageData.data;
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if (view[3] !== 0) {
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// The case here will always fail when oop'd on Firefox Desktop,
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// but not on B2G Emulator
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// See https://bugzil.la/878003#c20
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var isB2G = (navigator.platform === '');
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info('navigator.platform: ' + navigator.platform);
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if (!isB2G && browserElementTestHelpers.getOOPByDefaultPref()) {
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todo(false, 'The first pixel of updated screenshot is not transparent');
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} else {
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ok(false, 'The first pixel of updated screenshot is not transparent');
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}
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SimpleTest.finish();
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return;
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}
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ok(true, 'Verified the first pixel of updated screenshot is transparent');
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SimpleTest.finish();
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}
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}
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// We continually take screenshots until we get one that we are
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// happy with.
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function takeScreenshot(mimeType) {
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function gotImage(e) {
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// |this| is the Image.
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URL.revokeObjectURL(this.src);
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if (e.type === 'error' || !this.width || !this.height) {
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ok(false, "load image error");
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SimpleTest.finish();
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return;
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}
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var canvas = document.createElement('canvas');
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canvas.width = canvas.height = 1000;
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var ctx = canvas.getContext('2d');
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ctx.drawImage(this, 0, 0);
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var imageData = ctx.getImageData(0, 0, 1000, 1000);
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screenshotTaken(imageData);
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}
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function getScreenshotImageData(e) {
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var blob = e.target.result;
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if (blob.type !== mimeType) {
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ok(false, 'MIME type of screenshot taken incorrect');
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SimpleTest.finish();
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}
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if (blob.size === 0) {
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ok(false, "get screenshot image error");
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SimpleTest.finish();
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}
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var img = new Image();
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img.src = URL.createObjectURL(blob);
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img.onload = img.onerror = gotImage;
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}
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iframe1.getScreenshot(1000, 1000, mimeType).onsuccess =
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getScreenshotImageData;
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}
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function iframeLoadedHandler(e) {
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iframe1.removeEventListener('mozbrowserloadend', iframeLoadedHandler);
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takeScreenshot('image/jpeg');
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}
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iframe1.addEventListener('mozbrowserloadend', iframeLoadedHandler);
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}
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addEventListener('testready', runTest);
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