зеркало из https://github.com/mozilla/gecko-dev.git
113 строки
3.6 KiB
JavaScript
113 строки
3.6 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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const { Ci, Cc } = require("chrome");
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const Services = require("Services");
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const protocol = require("devtools/shared/protocol");
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const { LongStringActor } = require("devtools/server/actors/string");
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const {
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addDebugServiceWorkersListener,
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canDebugServiceWorkers,
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isParentInterceptEnabled,
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removeDebugServiceWorkersListener,
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} = require("devtools/shared/service-workers-debug-helper");
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const { DevToolsServer } = require("devtools/server/devtools-server");
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const { getSystemInfo } = require("devtools/shared/system");
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const { deviceSpec } = require("devtools/shared/specs/device");
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const { AppConstants } = require("resource://gre/modules/AppConstants.jsm");
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exports.DeviceActor = protocol.ActorClassWithSpec(deviceSpec, {
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initialize: function(conn) {
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protocol.Actor.prototype.initialize.call(this, conn);
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// pageshow and pagehide event release wake lock, so we have to acquire
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// wake lock again by pageshow event
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this._onPageShow = this._onPageShow.bind(this);
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if (this._window) {
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this._window.addEventListener("pageshow", this._onPageShow, true);
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}
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this._acquireWakeLock();
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this._onDebugServiceWorkersUpdated = this._onDebugServiceWorkersUpdated.bind(
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this
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);
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addDebugServiceWorkersListener(this._onDebugServiceWorkersUpdated);
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},
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destroy: function() {
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protocol.Actor.prototype.destroy.call(this);
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this._releaseWakeLock();
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if (this._window) {
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this._window.removeEventListener("pageshow", this._onPageShow, true);
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}
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removeDebugServiceWorkersListener(this._onDebugServiceWorkersUpdated);
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},
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_onDebugServiceWorkersUpdated: function() {
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this.emit("can-debug-sw-updated", canDebugServiceWorkers());
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},
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getDescription: function() {
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return Object.assign({}, getSystemInfo(), {
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canDebugServiceWorkers: canDebugServiceWorkers(),
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isParentInterceptEnabled: isParentInterceptEnabled(),
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});
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},
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screenshotToDataURL: function() {
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const window = this._window;
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const { devicePixelRatio } = window;
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const canvas = window.document.createElementNS(
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"http://www.w3.org/1999/xhtml",
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"canvas"
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);
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const width = window.innerWidth;
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const height = window.innerHeight;
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canvas.setAttribute("width", Math.round(width * devicePixelRatio));
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canvas.setAttribute("height", Math.round(height * devicePixelRatio));
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const context = canvas.getContext("2d");
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const flags =
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context.DRAWWINDOW_DRAW_CARET |
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context.DRAWWINDOW_DRAW_VIEW |
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context.DRAWWINDOW_USE_WIDGET_LAYERS;
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context.scale(devicePixelRatio, devicePixelRatio);
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context.drawWindow(window, 0, 0, width, height, "rgb(255,255,255)", flags);
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const dataURL = canvas.toDataURL("image/png");
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return new LongStringActor(this.conn, dataURL);
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},
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_acquireWakeLock: function() {
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if (AppConstants.platform !== "android") {
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return;
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}
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const pm = Cc["@mozilla.org/power/powermanagerservice;1"].getService(
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Ci.nsIPowerManagerService
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);
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this._wakelock = pm.newWakeLock("screen", this._window);
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},
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_releaseWakeLock: function() {
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if (this._wakelock) {
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try {
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this._wakelock.unlock();
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} catch (e) {
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// Ignore error since wake lock is already unlocked
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}
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this._wakelock = null;
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}
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},
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_onPageShow: function() {
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this._releaseWakeLock();
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this._acquireWakeLock();
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},
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get _window() {
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return Services.wm.getMostRecentWindow(DevToolsServer.chromeWindowType);
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},
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});
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