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colorswatch.h Example File
demos/mainwindow/colorswatch.h

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 #ifndef COLORSWATCH_H
 #define COLORSWATCH_H

 #include <QDockWidget>

 QT_FORWARD_DECLARE_CLASS(QAction)
 QT_FORWARD_DECLARE_CLASS(QActionGroup)
 QT_FORWARD_DECLARE_CLASS(QMenu)

 class ColorSwatch : public QDockWidget
 {
     Q_OBJECT

     QAction *closableAction;
     QAction *movableAction;
     QAction *floatableAction;
     QAction *floatingAction;
     QAction *verticalTitleBarAction;

     QActionGroup *allowedAreasActions;
     QAction *allowLeftAction;
     QAction *allowRightAction;
     QAction *allowTopAction;
     QAction *allowBottomAction;

     QActionGroup *areaActions;
     QAction *leftAction;
     QAction *rightAction;
     QAction *topAction;
     QAction *bottomAction;

     QAction *changeSizeHintsAction;

     QMenu *tabMenu;
     QMenu *splitHMenu;
     QMenu *splitVMenu;

     QAction *windowModifiedAction;

 public:
     ColorSwatch(const QString &colorName, QWidget *parent = 0, Qt::WindowFlags flags = 0);

     QMenu *menu;
     void setCustomSizeHint(const QSize &size);

 protected:
     virtual void contextMenuEvent(QContextMenuEvent *event);

 private:
     void allow(Qt::DockWidgetArea area, bool allow);
     void place(Qt::DockWidgetArea area, bool place);

 private slots:
     void changeClosable(bool on);
     void changeMovable(bool on);
     void changeFloatable(bool on);
     void changeFloating(bool on);
     void changeVerticalTitleBar(bool on);
     void updateContextMenu();

     void allowLeft(bool a);
     void allowRight(bool a);
     void allowTop(bool a);
     void allowBottom(bool a);

     void placeLeft(bool p);
     void placeRight(bool p);
     void placeTop(bool p);
     void placeBottom(bool p);

     void splitInto(QAction *action);
     void tabInto(QAction *action);
 };

 #endif