#pragma once

#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 final : 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() override { 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 *) override;

  void resizeEvent(QResizeEvent *) override;

  void mousePressEvent(QMouseEvent *event) override;

  void mouseMoveEvent(QMouseEvent *event) override;

  void mouseReleaseEvent(QMouseEvent *event) override;

  void mouseDoubleClickEvent(QMouseEvent *event) override;

  void contextMenuEvent(QContextMenuEvent *event) override;

  void keyPressEvent(QKeyEvent *event) override;

  void dragEnterEvent(QDragEnterEvent *event) override;

  void dragMoveEvent(QDragMoveEvent *event) override;

  void dropEvent(QDropEvent *event) override;

  void dragLeaveEvent(QDragLeaveEvent *event) override;

  void startDragDrop();

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

                        const char *slot);

  void showEvent(QShowEvent *) override;

  void hideEvent(QHideEvent *) override;

  bool event(QEvent *e) override;

  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 final : 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) override;

  void mouseMoveEvent(QMouseEvent *event) override;

  void mouseDoubleClickEvent(QMouseEvent *event) override;

  void dragEnterEvent(QDragEnterEvent *event) override;

  void dragMoveEvent(QDragMoveEvent *event) override;

  void dropEvent(QDropEvent *event) override;

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 final : 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 *) override;

  void enterEvent(QEvent *event) override;

  void leaveEvent(QEvent *event) override;

  void mousePressEvent(QMouseEvent *event) override;

  void mouseMoveEvent(QMouseEvent *event) override;

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