diff options
Diffstat (limited to 'addon-sdk/source/lib/sdk/content/thumbnail.js')
-rw-r--r-- | addon-sdk/source/lib/sdk/content/thumbnail.js | 51 |
1 files changed, 0 insertions, 51 deletions
diff --git a/addon-sdk/source/lib/sdk/content/thumbnail.js b/addon-sdk/source/lib/sdk/content/thumbnail.js deleted file mode 100644 index 783615fc6..000000000 --- a/addon-sdk/source/lib/sdk/content/thumbnail.js +++ /dev/null @@ -1,51 +0,0 @@ -/* This Source Code Form is subject to the terms of the Mozilla Public - * License, v. 2.0. If a copy of the MPL was not distributed with this - * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ -'use strict'; - -module.metadata = { - 'stability': 'unstable' -}; - -const { Cc, Ci, Cu } = require('chrome'); -const AppShellService = Cc['@mozilla.org/appshell/appShellService;1']. - getService(Ci.nsIAppShellService); - -const NS = 'http://www.w3.org/1999/xhtml'; -const COLOR = 'rgb(255,255,255)'; - -/** - * Creates canvas element with a thumbnail of the passed window. - * @param {Window} window - * @returns {Element} - */ -function getThumbnailCanvasForWindow(window) { - let aspectRatio = 0.5625; // 16:9 - let thumbnail = AppShellService.hiddenDOMWindow.document - .createElementNS(NS, 'canvas'); - thumbnail.mozOpaque = true; - thumbnail.width = Math.ceil(window.screen.availWidth / 5.75); - thumbnail.height = Math.round(thumbnail.width * aspectRatio); - let ctx = thumbnail.getContext('2d'); - let snippetWidth = window.innerWidth * .6; - let scale = thumbnail.width / snippetWidth; - ctx.scale(scale, scale); - ctx.drawWindow(window, window.scrollX, window.scrollY, snippetWidth, - snippetWidth * aspectRatio, COLOR); - return thumbnail; -} -exports.getThumbnailCanvasForWindow = getThumbnailCanvasForWindow; - -/** - * Creates Base64 encoded data URI of the thumbnail for the passed window. - * @param {Window} window - * @returns {String} - */ -exports.getThumbnailURIForWindow = function getThumbnailURIForWindow(window) { - return getThumbnailCanvasForWindow(window).toDataURL() -}; - -// default 80x45 blank when not available -exports.BLANK = 'data:image/png;base64,' + - 'iVBORw0KGgoAAAANSUhEUgAAAFAAAAAtCAYAAAA5reyyAAAAJElEQVRoge3BAQ'+ - 'EAAACCIP+vbkhAAQAAAAAAAAAAAAAAAADXBjhtAAGQ0AF/AAAAAElFTkSuQmCC'; |