qt-everywhere-src-5.15.1/qtbase/examples/widgets/mainwindows/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

public:
    explicit ColorSwatch(const QString &colorName, QMainWindow *parent = nullptr, Qt::WindowFlags flags = { });

    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 = 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