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/******************************************************************************
* The MIT License (MIT)
*
* Copyright (c) 2016-2018 Baldur Karlsson
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
******************************************************************************/
#pragma once
#include <QWidget>
class RangeHistogram : public QWidget
{
Q_OBJECT
public:
explicit RangeHistogram(QWidget *parent = 0);
~RangeHistogram();
void setHistogramRange(float min, float max);
void setRange(float min, float max);
void setHistogramData(const QVector<uint32_t> &histogram);
float blackPoint() { return m_BlackPoint; }
void setBlackPoint(float val);
float whitePoint() { return m_WhitePoint; }
void setWhitePoint(float val);
float rangeMin() { return m_RangeMin; }
float rangeMax() { return m_RangeMax; }
signals:
void rangeUpdated();
protected:
void mousePressEvent(QMouseEvent *e) override;
void mouseReleaseEvent(QMouseEvent *e) override;
void mouseMoveEvent(QMouseEvent *e) override;
void paintEvent(QPaintEvent *e) override;
private:
bool ValidRange() const;
float delta(float val) const;
static const int m_Margin = 4;
static const int m_Border = 1;
static const int m_MarkerSize = 6;
int totalSpace() const { return m_Margin + m_Border; }
int regionWidth() const { return rect().width() - totalSpace() * 2; }
float blackDelta();
void setBlackDelta(float value);
float whiteDelta();
void setWhiteDelta(float value);
QPoint m_MousePrev = QPoint(-1, -1);
enum class DraggingMode
{
None,
White,
Black,
} m_DragMode = DraggingMode::None;
QVector<uint32_t> m_HistogramData;
float m_HistogramMin = 0.0f;
float m_HistogramMax = 1.0f;
float m_RangeMin = 0.0f;
float m_RangeMax = 1.0f;
float m_BlackPoint = 0.0f;
float m_WhitePoint = 1.0f;
float m_MinRangeSize = 1.0e-6f;
};
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