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