File indexing completed on 2024-05-12 17:04:39

 /*
 *  Copyright 2018 Michail Vourlakos <mvourlakos@gmail.com>
 *
 *  This file is part of Latte-Dock
 *
 *  Latte-Dock is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU General Public License as
 *  published by the Free Software Foundation; either version 2 of
 *  the License, or (at your option) any later version.
 *
 *  Latte-Dock is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 
 function colorBrightness(color) {
     return colorBrightnessFromRGB(color.r * 255, color.g * 255, color.b * 255)
 }
 
 // formula for brightness according to:
 // https://www.w3.org/TR/AERT/#color-contrast
 function colorBrightnessFromRGB(r, g, b) {
     return (r * 299 + g * 587 + b * 114) / 1000
 }
 
 function colorLuminas(color) {
     return colorLuminasFromRGB(color.r, color.g, color.b)
 }
 
 // formula for luminance according to:
 // https://www.w3.org/TR/2008/REC-WCAG20-20081211/#relativeluminancedef
 function colorLuminasFromRGB(r, g, b) {
     var rS =  (r <= 0.03928) ? ( r / 12.92) : Math.pow( ((r + 0.055) / 1.055), 2.4 );
     var gS =  (g <= 0.03928) ? ( g / 12.92) : Math.pow( ((g + 0.055) / 1.055), 2.4 );
     var bS =  (b <= 0.03928) ? ( b / 12.92) : Math.pow( ((b + 0.055) / 1.055), 2.4 );
 
     return 0.2126*rS + 0.7152*gS + 0.0722*bS;
 }
 
 
 function normalize(min, max, per) {
     return min + ((max-min) * per);
 }