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-rw-r--r--browser/modules/Windows8WindowFrameColor.jsm53
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diff --git a/browser/modules/Windows8WindowFrameColor.jsm b/browser/modules/Windows8WindowFrameColor.jsm
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+/* 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 {interfaces: Ci, utils: Cu} = Components;
+
+this.EXPORTED_SYMBOLS = ["Windows8WindowFrameColor"];
+
+Cu.import("resource://gre/modules/Services.jsm");
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+var Registry = Cu.import("resource://gre/modules/WindowsRegistry.jsm").WindowsRegistry;
+
+var Windows8WindowFrameColor = {
+ _windowFrameColor: null,
+
+ get: function() {
+ if (this._windowFrameColor)
+ return this._windowFrameColor;
+
+ const HKCU = Ci.nsIWindowsRegKey.ROOT_KEY_CURRENT_USER;
+ const dwmKey = "Software\\Microsoft\\Windows\\DWM";
+ let customizationColor = Registry.readRegKey(HKCU, dwmKey,
+ "ColorizationColor");
+ if (customizationColor == undefined) {
+ // Seems to be the default color (hardcoded because of bug 1065998)
+ return [158, 158, 158];
+ }
+
+ // The color returned from the Registry is in decimal form.
+ let customizationColorHex = customizationColor.toString(16);
+
+ // Zero-pad the number just to make sure that it is 8 digits.
+ customizationColorHex = ("00000000" + customizationColorHex).substr(-8);
+ let customizationColorArray = customizationColorHex.match(/../g);
+ let [, fgR, fgG, fgB] = customizationColorArray.map(val => parseInt(val, 16));
+ let colorizationColorBalance = Registry.readRegKey(HKCU, dwmKey,
+ "ColorizationColorBalance");
+ if (colorizationColorBalance == undefined) {
+ colorizationColorBalance = 78;
+ }
+
+ // Window frame base color when Color Intensity is at 0, see bug 1004576.
+ let frameBaseColor = 217;
+ let alpha = colorizationColorBalance / 100;
+
+ // Alpha-blend the foreground color with the frame base color.
+ let r = Math.round(fgR * alpha + frameBaseColor * (1 - alpha));
+ let g = Math.round(fgG * alpha + frameBaseColor * (1 - alpha));
+ let b = Math.round(fgB * alpha + frameBaseColor * (1 - alpha));
+ return this._windowFrameColor = [r, g, b];
+ },
+};