File indexing completed on 2024-04-28 16:55:15

0001 /***************************************************************************
0002  *   Copyright (C) 2014 by Nikita Skovoroda <chalkerx@gmail.com>            *
0003  *                                                                         *
0004  *   This program is free software; you can redistribute it and/or modify  *
0005  *   it under the terms of the GNU General Public License as published by  *
0006  *   the Free Software Foundation; either version 2 of the License, or     *
0007  *   (at your option) any later version.                                   *
0008  *                                                                         *
0009  *   This program is distributed in the hope that it will be useful,       *
0010  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
0011  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
0012  *   GNU General Public License for more details.                          *
0013  *                                                                         *
0014  *   You should have received a copy of the GNU General Public License     *
0015  *   along with this program; if not, write to the                         *
0016  *   Free Software Foundation, Inc.,                                       *
0017  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA .        *
0018  ***************************************************************************/
0019 
0020 #include "powerdevilkeyboardbrightnesslogic.h"
0021 #include "powerdevil_debug.h"
0022 #include <QDebug>
0023 
0024 namespace PowerDevil
0025 {
0026 
0027 int KeyboardBrightnessLogic::calculateSteps(int maxValue) const
0028 {
0029     // We assume that a generally good number of steps for keyboard brightness is about 5.
0030 
0031     if (maxValue <= 7) {
0032         // Too few steps, return the number of actual steps.
0033        return maxValue;
0034     }
0035 
0036     if (maxValue % 5 == 0 || maxValue >= 80) {
0037         // When there are more than 80 actual steps, 20%, 40%, 60%, and 80% are always displayed nicely.
0038         return 5;
0039     }
0040 
0041     if (maxValue % 4 == 0)
0042         return 4;
0043 
0044     if (maxValue % 6 == 0)
0045         return 6;
0046 
0047     if (maxValue % 3 == 0)
0048         return 3;
0049 
0050     // 29 different maxValue values between 11 and 79 are left at this point.
0051     //qCDebug(POWERDEVIL) << "maxValue" << maxValue;
0052 
0053     // Give up and return 5, there is nothing much we can do here.
0054     return 5;
0055 }
0056 
0057 }