forked from mirrors/gecko-dev
		
	# ignore-this-changeset Differential Revision: https://phabricator.services.mozilla.com/D36046 --HG-- extra : source : f3c632037a1064c41b1f8b02f477c854b2fb4362
		
			
				
	
	
		
			61 lines
		
	
	
	
		
			2 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			61 lines
		
	
	
	
		
			2 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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"use strict";
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var EXPORTED_SYMBOLS = ["Windows8WindowFrameColor"];
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var { WindowsRegistry: Registry } = ChromeUtils.import(
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  "resource://gre/modules/WindowsRegistry.jsm"
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);
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var Windows8WindowFrameColor = {
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  _windowFrameColor: null,
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  get() {
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    if (this._windowFrameColor) {
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      return this._windowFrameColor;
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    }
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    const HKCU = Ci.nsIWindowsRegKey.ROOT_KEY_CURRENT_USER;
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    const dwmKey = "Software\\Microsoft\\Windows\\DWM";
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    let customizationColor = Registry.readRegKey(
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      HKCU,
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      dwmKey,
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      "ColorizationColor"
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    );
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    if (customizationColor == undefined) {
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      // Seems to be the default color (hardcoded because of bug 1065998)
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      return [158, 158, 158];
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    }
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    // The color returned from the Registry is in decimal form.
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    let customizationColorHex = customizationColor.toString(16);
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    // Zero-pad the number just to make sure that it is 8 digits.
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    customizationColorHex = ("00000000" + customizationColorHex).substr(-8);
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    let customizationColorArray = customizationColorHex.match(/../g);
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    let [, fgR, fgG, fgB] = customizationColorArray.map(val =>
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      parseInt(val, 16)
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    );
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    let colorizationColorBalance = Registry.readRegKey(
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      HKCU,
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      dwmKey,
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      "ColorizationColorBalance"
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    );
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    if (colorizationColorBalance == undefined) {
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      colorizationColorBalance = 78;
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    }
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    // Window frame base color when Color Intensity is at 0, see bug 1004576.
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    let frameBaseColor = 217;
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    let alpha = colorizationColorBalance / 100;
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    // Alpha-blend the foreground color with the frame base color.
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    let r = Math.round(fgR * alpha + frameBaseColor * (1 - alpha));
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    let g = Math.round(fgG * alpha + frameBaseColor * (1 - alpha));
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    let b = Math.round(fgB * alpha + frameBaseColor * (1 - alpha));
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    return (this._windowFrameColor = [r, g, b]);
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  },
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};
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