#pragma once

#ifndef HISTOGRAM_H

#define HISTOGRAM_H

#include "tcommon.h"

#include "traster.h"

#include "ttoonzimage.h"

#include "tpalette.h"

#include <qwidget></qwidget>

#include <qstackedwidget></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;

//=============================================================================

// HistogramGraph

//-----------------------------------------------------------------------------

class DVAPI HistogramGraph final : public QWidget {

  Q_OBJECT

  QColor m_color;

  /*! Height of graph, without margin.*/

  int m_height;

  QVector<int> m_values, m_viewValues, m_logViewValues;</int>

  bool m_logScale;

public:

  static const int drawMargin;

public:

  HistogramGraph(QWidget *parent = 0, QColor m_color = QColor());

  ~HistogramGraph();

  void setAlphaMask(int value);

  void setHeight(int height) { m_height = height; }

  int getHeight() { return m_height; }

  void setValues(const int values[]);

  const QVector<int> &values() const { return m_values; }</int>

  void setLogScale(bool onOff) { m_logScale = onOff; }

  bool logScale() const { return m_logScale; }

  void draw(QPainter *painter, QPoint translation = QPoint(0, 0));

protected:

  void paintEvent(QPaintEvent *pe) override;

};

//=============================================================================

// ChannelBar

//-----------------------------------------------------------------------------

class DVAPI ChannelBar final : public QWidget {

  Q_OBJECT

  QColor m_color;

  int m_colorBarLength;

  bool m_isHorizontal;

  bool m_drawNumbers;

public:

  ChannelBar(QWidget *parent = 0, QColor m_color = QColor(),

             bool isHorizontal = true);

  ~ChannelBar();

  QColor getColor() const { return m_color; }

  void setDrawNumbers(bool onOff);

  bool drawNumbers() const { return m_drawNumbers; }

  void draw(QPainter *painter, QPoint translation = QPoint(0, 0));

protected:

  void paintEvent(QPaintEvent *event) override;

};

//=============================================================================

// HistogramView

//-----------------------------------------------------------------------------

class DVAPI HistogramView final : public QWidget {

  Q_OBJECT

  HistogramGraph *m_histogramGraph;

  ChannelBar *m_colorBar;

  QWidget *m_drawnWidget;

public:

  HistogramView(QWidget *parent = 0, QColor color = Qt::black);

  ~HistogramView();

  const HistogramGraph *histogramGraph() const { return m_histogramGraph; }

  HistogramGraph *histogramGraph() { return m_histogramGraph; }

  const ChannelBar *channelBar() const { return m_colorBar; }

  ChannelBar *channelBar() { return m_colorBar; }

  QColor getChannelBarColor() const { return m_colorBar->getColor(); }

  // Deve essere fatto prima di chiamare setValues()

  void setGraphHeight(int height) { m_histogramGraph->setHeight(height); }

  void setGraphAlphaMask(int value) { m_histogramGraph->setAlphaMask(value); }

  void setDrawnWidget(QWidget *widget);

  void setValues(const int values[]);

  const QVector<int> &values() const { return m_histogramGraph->values(); }</int>

  void draw(QPainter *painter, QPoint translation = QPoint(0, 0));

};

//=============================================================================

// Histograms

//-----------------------------------------------------------------------------

class DVAPI Histograms final : public QStackedWidget {

  Q_OBJECT

  TRasterP m_raster;

  TPaletteP m_palette;  // Necessario per le tlv

  int m_channelValue[6][256];

  int m_channelsCount;

  bool m_computeAlsoRGBA;

public:

  Histograms(QWidget *parent = 0, bool rgba = false);

  ~Histograms();

  TRasterP getRaster() const { return m_raster; }

  void setRaster(const TRasterP &raster, const TPaletteP &palette = 0);

  HistogramView *getHistogramView(int indexType) const;

  int channelsCount() const { return m_channelsCount; }

protected:

  void computeChannelsValue();

};

//=============================================================================

// Histogram

//-----------------------------------------------------------------------------

class DVAPI Histogram final : public QWidget {

  Q_OBJECT

  QComboBox *m_channelsListBox;

  Histograms *m_histograms;

public:

  Histogram(QWidget *parent = 0);

  ~Histogram() {}

  Histograms *getHistograms() const { return m_histograms; }

  TRasterP getRaster() const { return m_histograms->getRaster(); }

  void setRaster(const TRasterP &raster, const TPaletteP &palette = 0);

public slots:

  void setLogScale(bool onOff);

private:

  void updateChannelsList();

};

#endif  // HISTOGRAM_H