The Tor Browser: comparison toolkit/modules/LightweightThemeConsumer.jsm

--1:000000000000
+:f5b934a1c64f
+/* 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/. */
+this.EXPORTED_SYMBOLS = ["LightweightThemeConsumer"];
+Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
+Components.utils.import("resource://gre/modules/Services.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "LightweightThemeImageOptimizer",
+"resource://gre/modules/addons/LightweightThemeImageOptimizer.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "PrivateBrowsingUtils",
+"resource://gre/modules/PrivateBrowsingUtils.jsm");
+this.LightweightThemeConsumer =
+function LightweightThemeConsumer(aDocument) {
+this._doc = aDocument;
+this._win = aDocument.defaultView;
+this._footerId = aDocument.documentElement.getAttribute("lightweightthemesfooter");
+if (PrivateBrowsingUtils.isWindowPrivate(this._win) &&
+!PrivateBrowsingUtils.permanentPrivateBrowsing) {
+return;
+}
+let screen = this._win.screen;
+this._lastScreenWidth = screen.width;
+this._lastScreenHeight = screen.height;
+Components.classes["@mozilla.org/observer-service;1"]
+.getService(Components.interfaces.nsIObserverService)
+.addObserver(this, "lightweight-theme-styling-update", false);
+var temp = {};
+Components.utils.import("resource://gre/modules/LightweightThemeManager.jsm", temp);
+this._update(temp.LightweightThemeManager.currentThemeForDisplay);
+this._win.addEventListener("resize", this);
+}
+LightweightThemeConsumer.prototype = {
+_lastData: null,
+_lastScreenWidth: null,
+_lastScreenHeight: null,
+// Whether the active lightweight theme should be shown on the window.
+_enabled: true,
+// Whether a lightweight theme is enabled.
+_active: false,
+enable: function() {
+this._enabled = true;
+this._update(this._lastData);
+},
+disable: function() {
+// Dance to keep the data, but reset the applied styles:
+let lastData = this._lastData
+this._update(null);
+this._enabled = false;
+this._lastData = lastData;
+},
+observe: function (aSubject, aTopic, aData) {
+if (aTopic != "lightweight-theme-styling-update")
+return;
+this._update(JSON.parse(aData));
+},
+handleEvent: function (aEvent) {
+let {width, height} = this._win.screen;
+if (this._lastScreenWidth != width || this._lastScreenHeight != height) {
+this._lastScreenWidth = width;
+this._lastScreenHeight = height;
+if (!this._active)
+return;
+this._update(this._lastData);
+Services.obs.notifyObservers(this._win, "lightweight-theme-optimized",
+JSON.stringify(this._lastData));
+}
+},
+destroy: function () {
+if (!PrivateBrowsingUtils.isWindowPrivate(this._win) ||
+PrivateBrowsingUtils.permanentPrivateBrowsing) {
+Components.classes["@mozilla.org/observer-service;1"]
+.getService(Components.interfaces.nsIObserverService)
+.removeObserver(this, "lightweight-theme-styling-update");
+this._win.removeEventListener("resize", this);
+}
+this._win = this._doc = null;
+},
+_update: function (aData) {
+if (!aData) {
+aData = { headerURL: "", footerURL: "", textcolor: "", accentcolor: "" };
+this._lastData = aData;
+} else {
+this._lastData = aData;
+aData = LightweightThemeImageOptimizer.optimize(aData, this._win.screen);
+}
+if (!this._enabled)
+return;
+let root = this._doc.documentElement;
+let active = !!aData.headerURL;
+let stateChanging = (active != this._active);
+if (active) {
+root.style.color = aData.textcolor || "black";
+root.style.backgroundColor = aData.accentcolor || "white";
+let [r, g, b] = _parseRGB(this._doc.defaultView.getComputedStyle(root, "").color);
+let luminance = 0.2125 * r + 0.7154 * g + 0.0721 * b;
+root.setAttribute("lwthemetextcolor", luminance <= 110 ? "dark" : "bright");
+root.setAttribute("lwtheme", "true");
+} else {
+root.style.color = "";
+root.style.backgroundColor = "";
+root.removeAttribute("lwthemetextcolor");
+root.removeAttribute("lwtheme");
+}
+this._active = active;
+_setImage(root, active, aData.headerURL);
+if (this._footerId) {
+let footer = this._doc.getElementById(this._footerId);
+footer.style.backgroundColor = active ? aData.accentcolor || "white" : "";
+_setImage(footer, active, aData.footerURL);
+if (active && aData.footerURL)
+footer.setAttribute("lwthemefooter", "true");
+else
+footer.removeAttribute("lwthemefooter");
+}
+#ifdef XP_MACOSX
+// On OS X, we extend the lightweight theme into the titlebar, which means setting
+// the chromemargin attribute. Some XUL applications already draw in the titlebar,
+// so we need to save the chromemargin value before we overwrite it with the value
+// that lets us draw in the titlebar. We stash this value on the root attribute so
+// that XUL applications have the ability to invalidate the saved value.
+if (stateChanging) {
+if (!root.hasAttribute("chromemargin-nonlwtheme")) {
+root.setAttribute("chromemargin-nonlwtheme", root.getAttribute("chromemargin"));
+}
+if (active) {
+root.setAttribute("chromemargin", "0,-1,-1,-1");
+} else {
+let defaultChromemargin = root.getAttribute("chromemargin-nonlwtheme");
+if (defaultChromemargin) {
+root.setAttribute("chromemargin", defaultChromemargin);
+} else {
+root.removeAttribute("chromemargin");
+}
+}
+}
+#endif
+}
+}
+function _setImage(aElement, aActive, aURL) {
+aElement.style.backgroundImage =
+(aActive && aURL) ? 'url("' + aURL.replace(/"/g, '\\"') + '")' : "";
+}
+function _parseRGB(aColorString) {
+var rgb = aColorString.match(/^rgba?\((\d+), (\d+), (\d+)/);
+rgb.shift();
+return rgb.map(function (x) parseInt(x));
+}

The Tor Browser / file comparison

comparison: toolkit/modules/LightweightThemeConsumer.jsm

toolkit/modules/LightweightThemeConsumer.jsm