#pragma once
 
#ifndef COMBOHISTOGRAM_H
#define COMBOHISTOGRAM_H
 
#include "tcommon.h"
#include "traster.h"
#include "ttoonzimage.h"
#include "tpalette.h"
 
#include <QWidget>
#include <QStackedWidget>
 
#undef DVAPI
#undef DVVAR
#ifdef TOONZQT_EXPORTS
#define DVAPI DV_EXPORT_API
#define DVVAR DV_EXPORT_VAR
#else
#define DVAPI DV_IMPORT_API
#define DVVAR DV_IMPORT_VAR
#endif
 
#ifdef _WIN32
#pragma warning(disable : 4251)
#endif
 
class QStackedWidget;
class QString;
class QComboBox;
class QColor;
 
class RGBLabel;
class QLabel;
 
#define COMBOHIST_RESOLUTION_W 256
#define COMBOHIST_RESOLUTION_H 100
 
//-----------------------------------------------------------------------------
 
//-----------------------------------------------------------------------------
// 120405
//-----------------------------------------------------------------------------
 
class DVAPI ComboHistoRGBLabel final : public QWidget {
  QColor m_color;
 
public:
  ComboHistoRGBLabel(QColor color, QWidget *parent);
 
  ~ComboHistoRGBLabel() {}
 
  void setColorAndUpdate(QColor color);
 
protected:
  void paintEvent(QPaintEvent *pe) override;
};
 
//-----------------------------------------------------------------------------
 
class DVAPI ChannelHistoGraph : public QWidget {
  Q_OBJECT
 
  QVector<int> m_values;
 
  int m_pickedValue;
 
public:
  int *m_channelValuePtr;
 
  ChannelHistoGraph(QWidget *parent = 0, int *channelValue = 0);
  ~ChannelHistoGraph();
 
  virtual void setValues();
 
  void showCurrentChannelValue(int val);
 
protected:
  void paintEvent(QPaintEvent *event) override;
};
 
//-----------------------------------------------------------------------------
 
class DVAPI RGBHistoGraph final : public ChannelHistoGraph {
  Q_OBJECT
 
  QVector<int> m_rgbValues[3];
 
  QImage m_histoImg;
 
public:
  RGBHistoGraph(QWidget *parent = 0, int *channelValue = 0);
  ~RGBHistoGraph();
 
  void setValues() override;
 
protected:
  void paintEvent(QPaintEvent *event) override;
};
//-----------------------------------------------------------------------------
 
class DVAPI ChannelColorBar final : public QWidget {
  Q_OBJECT
  QColor m_color;
 
public:
  ChannelColorBar(QWidget *parent = 0, QColor m_color = QColor());
  ~ChannelColorBar() {}
 
protected:
  void paintEvent(QPaintEvent *event) override;
};
 
//-----------------------------------------------------------------------------
 
class DVAPI ChannelHisto final : public QWidget {
  Q_OBJECT
 
  ChannelHistoGraph *m_histogramGraph;
  ChannelColorBar *m_colorBar;
 
public:
  ChannelHisto(int channelIndex, int *channelValue, QWidget *parent = 0);
  ~ChannelHisto() {}
 
  void refleshValue() { m_histogramGraph->setValues(); }
 
  void showCurrentChannelValue(int val);
 
protected slots:
  void onShowAlphaButtonToggled(bool visible);
};
 
//-----------------------------------------------------------------------------
 
class DVAPI ComboHistogram final : public QWidget {
  Q_OBJECT
 
  TRasterP m_raster;
  TPaletteP m_palette;
 
  // rgba channels
  int m_channelValue[4][COMBOHIST_RESOLUTION_W];
 
  // rgba channels + composited
  ChannelHisto *m_histograms[5];
 
  ComboHistoRGBLabel *m_rgbLabel;
 
  ComboHistoRGBLabel *m_rectAverageRgbLabel;
 
  QLabel *m_xPosLabel;
  QLabel *m_yPosLabel;
 
public:
  ComboHistogram(QWidget *parent = 0);
  ~ComboHistogram();
 
  TRasterP getRaster() const { return m_raster; }
  void setRaster(const TRasterP &raster, const TPaletteP &palette = 0);
  void updateInfo(const TPixel32 &pix, const TPointD &imagePos);
  void updateAverageColor(const TPixel32 &pix);
 
protected:
  void computeChannelsValue();
};
 
#endif