colorswatch.h Example File

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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

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

      void setCustomSizeHint(const QSize &size);
      QMenu *colorSwatchMenu() const { return menu; }

  protected:
  #ifndef QT_NO_CONTEXTMENU
      void contextMenuEvent(QContextMenuEvent *event) override;
  #endif // QT_NO_CONTEXTMENU
      void resizeEvent(QResizeEvent *e) override;

  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);

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

      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;

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

      QMainWindow *mainWindow;
  };

  class BlueTitleBar : public QWidget
  {
      Q_OBJECT
  public:
      explicit BlueTitleBar(QWidget *parent = Q_NULLPTR);

      QSize sizeHint() const override { return minimumSizeHint(); }
      QSize minimumSizeHint() const override;

  protected:
      void paintEvent(QPaintEvent *event) override;
      void mouseReleaseEvent(QMouseEvent *event) override;

  public slots:
      void updateMask();

  private:
      const QPixmap leftPm;
      const QPixmap centerPm;
      const QPixmap rightPm;
  };

  #endif // COLORSWATCH_H