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https://gitlab.winehq.org/wine/wine-gecko.git
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117 lines
3.8 KiB
JavaScript
117 lines
3.8 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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this.EXPORTED_SYMBOLS = ["LightweightThemeConsumer"];
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Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
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XPCOMUtils.defineLazyModuleGetter(this, "LightweightThemeImageOptimizer",
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"resource://gre/modules/LightweightThemeImageOptimizer.jsm");
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this.LightweightThemeConsumer =
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function LightweightThemeConsumer(aDocument) {
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this._doc = aDocument;
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this._win = aDocument.defaultView;
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this._footerId = aDocument.documentElement.getAttribute("lightweightthemesfooter");
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let screen = this._win.screen;
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this._lastScreenWidth = screen.width;
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this._lastScreenHeight = screen.height;
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Components.classes["@mozilla.org/observer-service;1"]
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.getService(Components.interfaces.nsIObserverService)
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.addObserver(this, "lightweight-theme-styling-update", false);
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var temp = {};
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Components.utils.import("resource://gre/modules/LightweightThemeManager.jsm", temp);
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this._update(temp.LightweightThemeManager.currentThemeForDisplay);
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this._win.addEventListener("resize", this);
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}
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LightweightThemeConsumer.prototype = {
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_lastData: null,
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_lastScreenWidth: null,
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_lastScreenHeight: null,
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observe: function (aSubject, aTopic, aData) {
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if (aTopic != "lightweight-theme-styling-update")
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return;
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this._update(JSON.parse(aData));
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},
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handleEvent: function (aEvent) {
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let {width, height} = this._win.screen;
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if (this._lastScreenWidth != width || this._lastScreenHeight != height) {
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this._lastScreenWidth = width;
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this._lastScreenHeight = height;
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this._update(this._lastData);
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}
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},
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destroy: function () {
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Components.classes["@mozilla.org/observer-service;1"]
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.getService(Components.interfaces.nsIObserverService)
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.removeObserver(this, "lightweight-theme-styling-update");
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this._win.removeEventListener("resize", this);
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this._win = this._doc = null;
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},
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_update: function (aData) {
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if (!aData)
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aData = { headerURL: "", footerURL: "", textcolor: "", accentcolor: "" };
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this._lastData = aData;
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aData = LightweightThemeImageOptimizer.optimize(aData, this._win.screen);
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var root = this._doc.documentElement;
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var active = !!aData.headerURL;
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if (active) {
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root.style.color = aData.textcolor || "black";
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root.style.backgroundColor = aData.accentcolor || "white";
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let [r, g, b] = _parseRGB(this._doc.defaultView.getComputedStyle(root, "").color);
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let luminance = 0.2125 * r + 0.7154 * g + 0.0721 * b;
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root.setAttribute("lwthemetextcolor", luminance <= 110 ? "dark" : "bright");
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root.setAttribute("lwtheme", "true");
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} else {
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root.style.color = "";
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root.style.backgroundColor = "";
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root.removeAttribute("lwthemetextcolor");
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root.removeAttribute("lwtheme");
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}
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_setImage(root, active, aData.headerURL);
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if (this._footerId) {
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let footer = this._doc.getElementById(this._footerId);
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footer.style.backgroundColor = active ? aData.accentcolor || "white" : "";
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_setImage(footer, active, aData.footerURL);
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if (active && aData.footerURL)
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footer.setAttribute("lwthemefooter", "true");
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else
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footer.removeAttribute("lwthemefooter");
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}
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#ifdef XP_MACOSX
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if (active)
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root.setAttribute("drawintitlebar", "true");
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else
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root.removeAttribute("drawintitlebar");
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#endif
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}
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}
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function _setImage(aElement, aActive, aURL) {
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aElement.style.backgroundImage =
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(aActive && aURL) ? 'url("' + aURL.replace(/"/g, '\\"') + '")' : "";
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}
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function _parseRGB(aColorString) {
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var rgb = aColorString.match(/^rgba?\((\d+), (\d+), (\d+)/);
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rgb.shift();
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return rgb.map(function (x) parseInt(x));
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}
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