gecko-dev/devtools/server/actors/device.js

71 строка
2.6 KiB
JavaScript

/* 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";
const {Ci} = require("chrome");
const Services = require("Services");
const protocol = require("devtools/shared/protocol");
const promise = require("promise");
const {LongStringActor} = require("devtools/server/actors/string");
const {DebuggerServer} = require("devtools/server/main");
const {getSystemInfo, getSetting} = require("devtools/shared/system");
const {deviceSpec} = require("devtools/shared/specs/device");
const FileReader = require("FileReader");
const {PermissionsTable} = require("resource://gre/modules/PermissionsTable.jsm");
var DeviceActor = exports.DeviceActor = protocol.ActorClassWithSpec(deviceSpec, {
_desc: null,
getDescription: function () {
return getSystemInfo();
},
getWallpaper: function () {
let deferred = promise.defer();
getSetting("wallpaper.image").then((blob) => {
let reader = new FileReader();
let conn = this.conn;
reader.addEventListener("load", function () {
let str = new LongStringActor(conn, reader.result);
deferred.resolve(str);
});
reader.addEventListener("error", function () {
deferred.reject(reader.error);
});
reader.readAsDataURL(blob);
});
return deferred.promise;
},
screenshotToDataURL: function () {
let window = Services.wm.getMostRecentWindow(DebuggerServer.chromeWindowType);
var devicePixelRatio = window.devicePixelRatio;
let canvas = window.document.createElementNS("http://www.w3.org/1999/xhtml", "canvas");
let width = window.innerWidth;
let height = window.innerHeight;
canvas.setAttribute("width", Math.round(width * devicePixelRatio));
canvas.setAttribute("height", Math.round(height * devicePixelRatio));
let context = canvas.getContext("2d");
let flags =
context.DRAWWINDOW_DRAW_CARET |
context.DRAWWINDOW_DRAW_VIEW |
context.DRAWWINDOW_USE_WIDGET_LAYERS;
context.scale(devicePixelRatio, devicePixelRatio);
context.drawWindow(window, 0, 0, width, height, "rgb(255,255,255)", flags);
let dataURL = canvas.toDataURL("image/png");
return new LongStringActor(this.conn, dataURL);
},
getRawPermissionsTable: function () {
return {
rawPermissionsTable: PermissionsTable,
UNKNOWN_ACTION: Ci.nsIPermissionManager.UNKNOWN_ACTION,
ALLOW_ACTION: Ci.nsIPermissionManager.ALLOW_ACTION,
DENY_ACTION: Ci.nsIPermissionManager.DENY_ACTION,
PROMPT_ACTION: Ci.nsIPermissionManager.PROMPT_ACTION
};
}
});