#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 : public QWidget
{
	QColor m_color;

public:
	ComboHistoRGBLabel(QColor color, QWidget *parent);

	~ComboHistoRGBLabel() {}

	void setColorAndUpdate(QColor color);

protected:
	void paintEvent(QPaintEvent *pe);
};

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

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:
	virtual void paintEvent(QPaintEvent *event);
};

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

class DVAPI RGBHistoGraph : public ChannelHistoGraph
{
	Q_OBJECT

	QVector<int> m_rgbValues[3];

	QImage m_histoImg;

public:
	RGBHistoGraph(QWidget *parent = 0, int *channelValue = 0);
	~RGBHistoGraph();

	void setValues();

protected:
	void paintEvent(QPaintEvent *event);
};
//-----------------------------------------------------------------------------

class DVAPI ChannelColorBar : public QWidget
{
	Q_OBJECT
	QColor m_color;

public:
	ChannelColorBar(QWidget *parent = 0, QColor m_color = QColor());
	~ChannelColorBar() {}

protected:
	void paintEvent(QPaintEvent *event);
};

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

class DVAPI ChannelHisto : 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 : 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