#ifndef PALETTEVIEWERGUI_H

#define PALETTEVIEWERGUI_H

// TnzQt includes

#include "toonzqt/selection.h"

#include "toonzqt/lineedit.h"

// TnzCore includes

#include "tpalette.h"

// Qt includes

#include <qframe></qframe>

#include <qtabbar></qtabbar>

#include <qshortcut></qshortcut>

#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 declarations

class TXsheetHandle;

class TFrameHandle;

class TPaletteHandle;

class TXshLevelHandle;

class TStyleSelection;

class TabBarContainter;

class ChangeStyleCommand;

class QMimeData;

class StyleNameEditor;

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

//****************************************************************************

//    PaletteViewerGUI  namespace

//****************************************************************************

/*!

  \brief    Contains classes pertaining the GUI of a Toonz Palette Viewer.

  */

namespace PaletteViewerGUI

{

// class for managing the palette's default style chip size

class DVAPI ChipSizeManager

{

public:

	int chipSize_Palette;

	int chipSize_Cleanup;

	int chipSize_Studio;

	static ChipSizeManager *instance()

	{

		static ChipSizeManager _instance;

		return &_instance;

	}

private:

	ChipSizeManager() : chipSize_Palette(2),

						chipSize_Cleanup(2),

						chipSize_Studio(2)

	{

	}

};

enum PaletteViewType //! Possible palette contents of a Palette Viewer.

{

	LEVEL_PALETTE,   //!< Content palette is from a level.

	CLEANUP_PALETTE, //!< Content palette is from cleanup settings.

	STUDIO_PALETTE   //!< Content palette is from a Studio Palette panel.

};

//****************************************************************************

//    PageViewer  declaration

//****************************************************************************

class DVAPI PageViewer : public QFrame,

						 public TSelection::View

{

	Q_OBJECT

	QColor m_textColor; //text color used for list view

	Q_PROPERTY(QColor TextColor READ getTextColor WRITE setTextColor)

public:

	enum ViewMode //! Possible view modes for a Palette Viewer.

	{

		SmallChips,		   //!< Small icons.

		MediumChips,	   //!< Medium icons.

		LargeChips,		   //!< Large icons with style names.

		List,			   //!< Top-down list of all icons.

		SmallChipsWithName //!< Small icons with overlayed style names (if user-defined).

	};

	// for displaying the linked style name from studio palette

	enum NameDisplayMode { Style,

						   Original,

						   StyleAndOriginal };

public:

	PageViewer(QWidget *parent = 0, PaletteViewType viewType = LEVEL_PALETTE, bool hasPasteColors = true);

	~PageViewer();

	void setPaletteHandle(TPaletteHandle *paletteHandle);

	TPaletteHandle *getPaletteHandle() const;

	void setXsheetHandle(TXsheetHandle *xsheetHandle);

	TXsheetHandle *getXsheetHandle() const;

	void setFrameHandle(TFrameHandle *xsheetHandle);

	TFrameHandle *getFrameHandle() const;

	// for clearing the cache when execute paste style command on styleSelection

	void setLevelHandle(TXshLevelHandle *levelHandle);

	void setCurrentStyleIndex(int index);

	int getCurrentStyleIndex() const;

	void setPage(TPalette::Page *page);

	TPalette::Page *getPage() const { return m_page; }

	void setChangeStyleCommand(ChangeStyleCommand *changeStyleCommand) { m_changeStyleCommand = changeStyleCommand; };

	ChangeStyleCommand *getChangeStyleCommand() const { return m_changeStyleCommand; }

	int getChipCount() const;

	ViewMode getViewMode() const { return m_viewMode; }

	void setViewMode(ViewMode mode);

	void setNameDisplayMode(NameDisplayMode mode);

	PaletteViewerGUI::PaletteViewType getViewType() const { return m_viewType; }

	int posToIndex(const QPoint &pos) const;

	QRect getItemRect(int index) const;

	QRect getColorChipRect(int index) const;

	QRect getColorNameRect(int index) const;

	void drop(int indexInPage, const QMimeData *mimeData);

	void createDropPage();

	void onSelectionChanged() { update(); }

	TStyleSelection *getSelection() const { return m_styleSelection; }

	void clearSelection();

	// update the "lock"s for commands when the StyleSelection becomes current and when the current palettte changed

	void updateCommandLocks();

	void setTextColor(const QColor &color) { m_textColor = color; }

	QColor getTextColor() const { return m_textColor; }

public slots:

	void computeSize();

	void onFrameChanged();

	void onStyleRenamed();

	void addNewColor();

	void addNewPage();

protected:

	QSize getChipSize() const;

	void drawColorChip(QPainter &p, QRect &chipRect, TColorStyle *style);

	void drawColorName(QPainter &p, QRect &nameRect, TColorStyle *style, int styleIndex);

	void drawToggleLink(QPainter &p, QRect &chipRect, TColorStyle *style);

	// event handlers

	void paintEvent(QPaintEvent *);

	void resizeEvent(QResizeEvent *);

	void mousePressEvent(QMouseEvent *event);

	void mouseMoveEvent(QMouseEvent *event);

	void mouseReleaseEvent(QMouseEvent *event);

	void mouseDoubleClickEvent(QMouseEvent *event);

	void contextMenuEvent(QContextMenuEvent *event);

	void keyPressEvent(QKeyEvent *event);

	void dragEnterEvent(QDragEnterEvent *event);

	void dragMoveEvent(QDragMoveEvent *event);

	void dropEvent(QDropEvent *event);

	void dragLeaveEvent(QDragLeaveEvent *event);

	void startDragDrop();

	void createMenuAction(QMenu &menu, const char *id, QString name, const char *slot);

	void showEvent(QShowEvent *);

	void hideEvent(QHideEvent *);

	bool event(QEvent *e);

	void select(int indexInPage, QMouseEvent *event);

	void zoomInChip();

	void zoomOutChip();

protected slots:

	void toggleLink();

	void eraseToggleLink();

	void removeLink();

private:

	DVGui::LineEdit *m_renameTextField;

	QPoint m_dragStartPosition;

	TPalette::Page *m_page;

	QPoint m_chipsOrigin;

	int m_chipPerRow;

	ViewMode m_viewMode;

	NameDisplayMode m_nameDisplayMode;

	int m_dropPositionIndex;

	bool m_dropPageCreated;

	bool m_startDrag;

	TStyleSelection *m_styleSelection;

	TFrameHandle *m_frameHandle;

	bool m_hasPasteColors;

	PaletteViewType m_viewType;

	ChangeStyleCommand *m_changeStyleCommand;

	QShortcut *m_zoomInShortCut;

	QShortcut *m_zoomOutShortCut;

	StyleNameEditor *m_styleNameEditor;

signals:

	void changeWindowTitleSignal();

};

//****************************************************************************

//    PaletteTabBar  declaration

//****************************************************************************

class DVAPI PaletteTabBar : public QTabBar

{

	Q_OBJECT

public:

	PaletteTabBar(QWidget *parent, bool hasPageCommand);

	void setPageViewer(PageViewer *pageViewer)

	{

		m_pageViewer = pageViewer;

	}

public slots:

	void updateTabName();

signals:

	void tabTextChanged(int index);

	void movePage(int srcIndex, int dstIndex);

protected:

	void mousePressEvent(QMouseEvent *event);

	void mouseMoveEvent(QMouseEvent *event);

	void mouseDoubleClickEvent(QMouseEvent *event);

	void dragEnterEvent(QDragEnterEvent *event);

	void dragMoveEvent(QDragMoveEvent *event);

	void dropEvent(QDropEvent *event);

private:

	DVGui::LineEdit *m_renameTextField;

	int m_renameTabIndex;

	PageViewer *m_pageViewer;

	bool m_hasPageCommand;

};

//****************************************************************************

//    PaletteIconWidget  declaration

//****************************************************************************

/*!

	\brief    Special placeholder toolbar icon for \a starting a palette move

	through drag & drop.

	\details  This widget is currently employed as a mere mouse event filter

	to propagate drag & drop starts to a PaletteViewer ancestor

	in the widgets hierarchy.

	*/

class DVAPI PaletteIconWidget : public QWidget

{

	Q_OBJECT

public:

#if QT_VERSION >= 0x050500

	PaletteIconWidget(QWidget *parent = 0, Qt::WindowFlags flags = 0);

#else

	PaletteIconWidget(QWidget *parent = 0, Qt::WFlags flags = 0);

#endif

	~PaletteIconWidget();

signals:

	void startDrag(); //!< Emitted \a once whenever the icon is sensibly dragged

					  //!  by the user.

protected:

	void paintEvent(QPaintEvent *);

	void enterEvent(QEvent *event);

	void leaveEvent(QEvent *event);

	void mousePressEvent(QMouseEvent *event);

	void mouseMoveEvent(QMouseEvent *event);

private:

	QPoint m_mousePressPos; //!< Mouse position at mouse press.

	bool m_isOver,			//!< Whether mouse is hovering on this widget.

		m_dragged;			//!< Whether user has started a drag operation on the icon.

};

} // namespace PaletteViewerGUI

#endif // PALETTEVIEWERGUI_H