2012-06-10 23:44:50 +00:00
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/* Any copyright is dedicated to the public domain.
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http://creativecommons.org/publicdomain/zero/1.0/ */
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2012-06-09 16:05:31 +00:00
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2012-06-10 23:44:50 +00:00
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// Test the getScreenshot property for mozbrowser
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2012-05-19 00:47:20 +00:00
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"use strict";
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SimpleTest.waitForExplicitFinish();
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2013-03-28 19:51:10 +00:00
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browserElementTestHelpers.setEnabledPref(true);
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browserElementTestHelpers.addPermission();
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2012-05-19 00:47:20 +00:00
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function runTest() {
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var iframe1 = document.createElement('iframe');
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2013-02-27 02:26:10 +00:00
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SpecialPowers.wrap(iframe1).mozbrowser = true;
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2012-05-19 00:47:20 +00:00
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document.body.appendChild(iframe1);
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2012-05-31 02:15:12 +00:00
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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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2012-05-19 00:47:20 +00:00
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2014-01-13 13:55:15 +00:00
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var screenshotImageDatas = [];
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2012-05-19 00:47:20 +00:00
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var numLoaded = 0;
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2014-01-13 13:55:15 +00:00
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function screenshotTaken(screenshotImageData) {
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screenshotImageDatas.push(screenshotImageData);
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if (screenshotImageDatas.length === 1) {
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2012-05-31 02:15:12 +00:00
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ok(true, 'Got initial non blank screenshot');
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2014-01-13 13:55:15 +00:00
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var view = screenshotImageData.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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2012-05-19 00:47:20 +00:00
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iframe1.src = 'data:text/html,<html>' +
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2014-01-13 13:55:15 +00:00
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'<body style="background:transparent">hello</body></html>';
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// Wait until screenshotImageData !== screenshotImageDatas[0].
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waitForScreenshot(function(screenshotImageData) {
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var view1 = screenshotImageData.data;
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var view2 = screenshotImageDatas[0].data;
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2012-10-31 23:28:11 +00:00
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if (view1.length != view2.length) {
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return true;
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}
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for (var i = 0; i < view1.length; i++) {
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if (view1[i] != view2[i]) {
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return true;
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}
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}
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return false;
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2014-01-13 13:55:15 +00:00
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}, 'image/png');
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2012-05-19 00:47:20 +00:00
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}
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2014-01-13 13:55:15 +00:00
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else if (screenshotImageDatas.length === 2) {
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2012-05-31 02:15:12 +00:00
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ok(true, 'Got updated screenshot after source page changed');
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2014-01-13 13:55:15 +00:00
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var view = screenshotImageData.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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2012-05-19 00:47:20 +00:00
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SimpleTest.finish();
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}
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}
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2012-05-31 02:15:12 +00:00
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// We continually take screenshots until we get one that we are
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2012-10-17 04:23:08 +00:00
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// happy with.
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2014-01-13 13:55:15 +00:00
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function waitForScreenshot(filter, 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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tryAgain();
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2012-05-31 02:15:12 +00:00
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return;
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}
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2014-01-13 13:55:15 +00:00
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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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if (filter(imageData)) {
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screenshotTaken(imageData);
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return;
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}
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tryAgain();
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}
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function tryAgain() {
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2012-05-31 02:15:12 +00:00
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if (--attempts === 0) {
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ok(false, 'Timed out waiting for correct screenshot');
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SimpleTest.finish();
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} else {
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2012-10-31 23:28:11 +00:00
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setTimeout(function() {
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2014-01-13 13:55:15 +00:00
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iframe1.getScreenshot(1000, 1000, mimeType).onsuccess =
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getScreenshotImageData;
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2012-05-31 02:15:12 +00:00
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}, 200);
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}
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}
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2014-01-13 13:55:15 +00:00
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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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tryAgain();
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return;
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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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2012-10-31 23:28:11 +00:00
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}
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2012-05-31 02:15:12 +00:00
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var attempts = 10;
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2014-01-13 13:55:15 +00:00
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iframe1.getScreenshot(1000, 1000, mimeType).onsuccess =
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getScreenshotImageData;
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2012-05-24 03:57:26 +00:00
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}
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2012-05-19 00:47:20 +00:00
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function iframeLoadedHandler() {
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numLoaded++;
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2012-05-31 02:15:12 +00:00
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if (numLoaded === 2) {
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2014-01-13 13:55:15 +00:00
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waitForScreenshot(function(screenshotImageData) {
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return true;
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}, 'image/jpeg');
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2012-05-19 00:47:20 +00:00
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}
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}
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iframe1.addEventListener('mozbrowserloadend', iframeLoadedHandler);
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}
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2013-03-28 19:51:10 +00:00
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addEventListener('testready', runTest);
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