/* 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/. */ addMessageListener("Eyedropper:RequestContentScreenshot", sendContentScreenshot); function sendContentScreenshot() { let canvas = content.document.createElementNS("http://www.w3.org/1999/xhtml", "canvas"); let width = content.innerWidth; let height = content.innerHeight; canvas.width = width; canvas.height = height; canvas.mozOpaque = true; let ctx = canvas.getContext("2d"); ctx.drawWindow(content, content.scrollX, content.scrollY, width, height, "#fff"); sendAsyncMessage("Eyedropper:Screenshot", canvas.toDataURL()); }