#ifndef SPECTRUMFIELD_H
#define SPECTRUMFIELD_H

#include <QWidget>
#include "toonzqt/colorfield.h"
#include "tpixel.h"
#include "tspectrum.h"

#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

// forward declaration

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

namespace DVGui
{

//=============================================================================
// SpectrumBar
//-----------------------------------------------------------------------------

class DVAPI SpectrumBar : public QWidget
{
	Q_OBJECT

	int m_x0;
	int m_currentKeyIndex;

	QPixmap m_chessBg;

	TSpectrum m_spectrum;

public:
	SpectrumBar(QWidget *parent = 0,
				TPixel32 color = TPixel32(0, 0, 0, 255));

	~SpectrumBar();

	int getCurrentKeyIndex()
	{
		return m_currentKeyIndex;
	}
	void setCurrentKeyIndex(int index);

	int getCurrentPos();
	TPixel32 getCurrentColor();

	TSpectrum &getSpectrum()
	{
		return m_spectrum;
	}
	void setSpectrum(TSpectrum &spectrum)
	{
		m_spectrum = spectrum;
		/*-- Undoの場合、Spectrumの差し替えによってIndexがあふれてしまうことがある --*/
		if (m_currentKeyIndex >= m_spectrum.getKeyCount())
			setCurrentKeyIndex(getMaxPosKeyIndex());
		update();
	}

public slots:
	void setCurrentPos(int pos, bool isDragging);
	void setCurrentColor(const TPixel32 &color);
	void addKeyAt(int pos);

signals:
	void currentPosChanged(bool isDragging);
	void currentKeyChanged();
	void currentKeyAdded(int);
	void currentKeyRemoved(int);

protected:
	double posToSpectrumValue(int pos);
	int spectrumValueToPos(double spectrumValue);

	void paintEvent(QPaintEvent *e);
	void mousePressEvent(QMouseEvent *e);
	void mouseMoveEvent(QMouseEvent *e);

	void mouseReleaseEvent(QMouseEvent *e);

	int getMaxPosKeyIndex();
	int getMinPosKeyIndex();
	int getNearPosKeyIndex(int pos);
};

//=============================================================================
// SpectrumField
//-----------------------------------------------------------------------------

class DVAPI SpectrumField : public QWidget
{
	Q_OBJECT

	int m_margin;
	int m_spacing;

	ColorField *m_colorField;
	SpectrumBar *m_spectrumbar;

public:
	SpectrumField(QWidget *parent = 0,
				  TPixel32 color = TPixel32(0, 0, 0, 255));

	~SpectrumField();

	TSpectrum &getSpectrum()
	{
		return m_spectrumbar->getSpectrum();
	}
	void setSpectrum(TSpectrum &spectrum)
	{
		m_spectrumbar->setSpectrum(spectrum);
		m_colorField->setColor(m_spectrumbar->getCurrentColor());
	}

	int getCurrentKeyIndex()
	{
		return m_spectrumbar->getCurrentKeyIndex();
	}
	void setCurrentKeyIndex(int index)
	{
		m_spectrumbar->setCurrentKeyIndex(index);
		m_colorField->setColor(m_spectrumbar->getCurrentColor());
	}

protected slots:
	void onCurrentPosChanged(bool isDragging);
	void onCurrentKeyChanged();
	void onColorChanged(const TPixel32 &color, bool isDragging);

protected:
	void paintEvent(QPaintEvent *e);

signals:
	void keyColorChanged(bool);
	void keyPositionChanged(bool);
	void keyAdded(int);
	void keyRemoved(int);
};

//-----------------------------------------------------------------------------
} //namespace DVGui
//-----------------------------------------------------------------------------

#endif // SPECTRUMFIELD_H