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/***************************************************************************
* Copyright (C) 2014 by Nikita Skovoroda <chalkerx@gmail.com> *
* *
* This program 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. *
* *
* This program 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, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . *
***************************************************************************/
#include "powerdevilbrightnesslogic.h"
#include "powerdevilbackendinterface.h"
namespace PowerDevil
{
BrightnessLogic::BrightnessLogic()
{
}
void BrightnessLogic::setValue(int value)
{
m_value = value;
}
void BrightnessLogic::setValueMax(int valueMax)
{
if (valueMax != m_valueMax) {
m_valueMax = valueMax;
m_steps = calculateSteps(valueMax);
}
}
int BrightnessLogic::action(BrightnessKeyType type) const {
switch (type) {
case Increase:
return increased();
case Decrease:
return decreased();
case Toggle:
return toggled();
}
return -1; // We shouldn't get here
}
int BrightnessLogic::increased() const
{
if (m_value == m_valueMax) {
return -1; // ignore, we are at the maximum
}
// Add 1 and round upwards to the nearest step
int step = m_steps - (m_valueMax - m_value - 1) * m_steps / m_valueMax;
if (m_valueMax > 100 && qRound(percentage(stepToValue(step))) <= qRound(percentage(m_value))) {
// When no visible change was made, add 1 step.
// This can happen only if valueMax > 100, else 1 >= 1%.
step++;
}
return stepToValue(step);
}
int BrightnessLogic::decreased() const
{
if (m_value == 0) {
return -1; // ignore, we are at the minimum
}
// Subtract 1 and round downwards to the nearest Step
int step = (m_value - 1) * m_steps / m_valueMax;
if (m_valueMax > 100 && qRound(percentage(stepToValue(step))) >= qRound(percentage(m_value))) {
// When no visible change was made, subtract 1 step.
// This can happen only if valueMax > 100, else 1 >= 1%.
step--;
}
return stepToValue(step);
}
int BrightnessLogic::toggled() const
{
// If it's not minimum, set to minimum, if it's minimum, set to maximum
return m_value > 0 ? 0 : m_valueMax;
}
int BrightnessLogic::value() const
{
return m_value;
}
int BrightnessLogic::valueMax() const
{
return m_valueMax;
}
int BrightnessLogic::steps() const
{
return m_steps;
}
float BrightnessLogic::percentage(int value) const
{
return value * 100.0 / m_valueMax;
}
const BrightnessLogic::BrightnessInfo BrightnessLogic::info() const
{
return BrightnessInfo{
m_value, m_valueMax, m_steps
};
}
int BrightnessLogic::stepToValue(int step) const
{
return qBound(0, qRound(step * 1.0 * m_valueMax / m_steps), m_valueMax);
}
int BrightnessLogic::valueToStep(int value) const
{
return qBound(0, qRound(value * 1.0 * m_steps / m_valueMax), m_steps);
}
}
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