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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 {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components;
this.EXPORTED_SYMBOLS = ["Windows8WindowFrameColor"];
Cu.import("resource://gre/modules/Services.jsm");
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
Cu.import("resource://gre/modules/WindowsRegistry.jsm");
const Windows8WindowFrameColor = {
_windowFrameColor: null,
get_win8: function() {
if (this._windowFrameColor)
return this._windowFrameColor;
let HKCU = Ci.nsIWindowsRegKey.ROOT_KEY_CURRENT_USER;
let dwmKey = "Software\\Microsoft\\Windows\\DWM";
// Window frame base color component values when Color Intensity is at 0.
let frameBaseColor = 217;
let windowFrameColor = WindowsRegistry.readRegKey(HKCU, dwmKey,
"ColorizationColor");
if (windowFrameColor == undefined) {
// Return the default color if unset or colorization not used
return this._windowFrameColor = [frameBaseColor, frameBaseColor, frameBaseColor];
}
// The color returned from the Registry is in decimal form.
let windowFrameColorHex = windowFrameColor.toString(16);
// Zero-pad the number just to make sure that it is 8 digits.
windowFrameColorHex = ("00000000" + windowFrameColorHex).substr(-8);
let windowFrameColorArray = windowFrameColorHex.match(/../g);
let [unused, fgR, fgG, fgB] = windowFrameColorArray.map(function(val) parseInt(val, 16));
let windowFrameColorBalance = WindowsRegistry.readRegKey(HKCU, dwmKey,
"ColorizationColorBalance");
// Default to balance=78 if reg key isn't defined
if (windowFrameColorBalance == undefined) {
windowFrameColorBalance = 78;
}
let alpha = windowFrameColorBalance / 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];
}
};
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