browser/modules/Windows8WindowFrameColor.jsm

changeset 0
6474c204b198
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/browser/modules/Windows8WindowFrameColor.jsm	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,43 @@
     1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
     1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.6 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.7 +
     1.8 +"use strict";
     1.9 +const {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components;
    1.10 +
    1.11 +this.EXPORTED_SYMBOLS = ["Windows8WindowFrameColor"];
    1.12 +
    1.13 +Cu.import("resource://gre/modules/Services.jsm");
    1.14 +Cu.import("resource://gre/modules/XPCOMUtils.jsm");
    1.15 +let Registry = Cu.import("resource://gre/modules/WindowsRegistry.jsm").WindowsRegistry;
    1.16 +
    1.17 +const Windows8WindowFrameColor = {
    1.18 +  _windowFrameColor: null,
    1.19 +
    1.20 +  get: function() {
    1.21 +    if (this._windowFrameColor)
    1.22 +      return this._windowFrameColor;
    1.23 +
    1.24 +    const HKCU = Ci.nsIWindowsRegKey.ROOT_KEY_CURRENT_USER;
    1.25 +    const dwmKey = "Software\\Microsoft\\Windows\\DWM";
    1.26 +    let customizationColor = Registry.readRegKey(HKCU, dwmKey,
    1.27 +                                                 "ColorizationColor");
    1.28 +    // The color returned from the Registry is in decimal form.
    1.29 +    let customizationColorHex = customizationColor.toString(16);
    1.30 +    // Zero-pad the number just to make sure that it is 8 digits.
    1.31 +    customizationColorHex = ("00000000" + customizationColorHex).substr(-8);
    1.32 +    let customizationColorArray = customizationColorHex.match(/../g);
    1.33 +    let [unused, fgR, fgG, fgB] = customizationColorArray.map(function(val) parseInt(val, 16));
    1.34 +    let colorizationColorBalance = Registry.readRegKey(HKCU, dwmKey,
    1.35 +                                                       "ColorizationColorBalance");
    1.36 +     // Window frame base color when Color Intensity is at 0, see bug 1004576.
    1.37 +    let frameBaseColor = 217;
    1.38 +    let alpha = colorizationColorBalance / 100;
    1.39 +
    1.40 +    // Alpha-blend the foreground color with the frame base color.
    1.41 +    let r = Math.round(fgR * alpha + frameBaseColor * (1 - alpha));
    1.42 +    let g = Math.round(fgG * alpha + frameBaseColor * (1 - alpha));
    1.43 +    let b = Math.round(fgB * alpha + frameBaseColor * (1 - alpha));
    1.44 +    return this._windowFrameColor = [r, g, b];
    1.45 +  },
    1.46 +};

mercurial