qmdisubwindow.h

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#ifndef QMDISUBWINDOW_H
#define QMDISUBWINDOW_H
 
#include <QtWidgets/qtwidgetsglobal.h>
#include <QtWidgets/qwidget.h>
 
QT_REQUIRE_CONFIG(mdiarea);
 
QT_BEGIN_NAMESPACE
 
class QMenu;
class QMdiArea;
 
namespace QMdi { class ControlContainer; }
class QMdiSubWindowPrivate;
class Q_WIDGETS_EXPORT QMdiSubWindow : public QWidget
{
    Q_OBJECT
    Q_PROPERTY(int keyboardSingleStep READ keyboardSingleStep WRITE setKeyboardSingleStep)
    Q_PROPERTY(int keyboardPageStep READ keyboardPageStep WRITE setKeyboardPageStep)
public:
    enum SubWindowOption {
        AllowOutsideAreaHorizontally = 0x1, // internal
        AllowOutsideAreaVertically = 0x2, // internal
        RubberBandResize = 0x4,
        RubberBandMove = 0x8
    };
    Q_DECLARE_FLAGS(SubWindowOptions, SubWindowOption)
 
    QMdiSubWindow(QWidget *parent = nullptr, Qt::WindowFlags flags = Qt::WindowFlags());
    ~QMdiSubWindow();
 
    QSize sizeHint() const override;
    QSize minimumSizeHint() const override;
 
    void setWidget(QWidget *widget);
    QWidget *widget() const;
 
    QWidget *maximizedButtonsWidget() const; // internal
    QWidget *maximizedSystemMenuIconWidget() const; // internal
 
    bool isShaded() const;
 
    void setOption(SubWindowOption option, bool on = true);
    bool testOption(SubWindowOption) const;
 
    void setKeyboardSingleStep(int step);
    int keyboardSingleStep() const;
 
    void setKeyboardPageStep(int step);
    int keyboardPageStep() const;
 
#if QT_CONFIG(menu)
    void setSystemMenu(QMenu *systemMenu);
    QMenu *systemMenu() const;
#endif
 
    QMdiArea *mdiArea() const;
 
Q_SIGNALS:
    void windowStateChanged(Qt::WindowStates oldState, Qt::WindowStates newState);
    void aboutToActivate();
 
public Q_SLOTS:
#if QT_CONFIG(menu)
    void showSystemMenu();
#endif
    void showShaded();
 
protected:
    bool eventFilter(QObject *object, QEvent *event) override;
    bool event(QEvent *event) override;
    void showEvent(QShowEvent *showEvent) override;
    void hideEvent(QHideEvent *hideEvent) override;
    void changeEvent(QEvent *changeEvent) override;
    void closeEvent(QCloseEvent *closeEvent) override;
    void leaveEvent(QEvent *leaveEvent) override;
    void resizeEvent(QResizeEvent *resizeEvent) override;
    void timerEvent(QTimerEvent *timerEvent) override;
    void moveEvent(QMoveEvent *moveEvent) override;
    void paintEvent(QPaintEvent *paintEvent) override;
    void mousePressEvent(QMouseEvent *mouseEvent) override;
    void mouseDoubleClickEvent(QMouseEvent *mouseEvent) override;
    void mouseReleaseEvent(QMouseEvent *mouseEvent) override;
    void mouseMoveEvent(QMouseEvent *mouseEvent) override;
    void keyPressEvent(QKeyEvent *keyEvent) override;
#ifndef QT_NO_CONTEXTMENU
    void contextMenuEvent(QContextMenuEvent *contextMenuEvent) override;
#endif
    void focusInEvent(QFocusEvent *focusInEvent) override;
    void focusOutEvent(QFocusEvent *focusOutEvent) override;
    void childEvent(QChildEvent *childEvent) override;
 
private:
    Q_DISABLE_COPY(QMdiSubWindow)
    Q_DECLARE_PRIVATE(QMdiSubWindow)
    Q_PRIVATE_SLOT(d_func(), void _q_updateStaysOnTopHint())
    Q_PRIVATE_SLOT(d_func(), void _q_enterInteractiveMode())
    Q_PRIVATE_SLOT(d_func(), void _q_processFocusChanged(QWidget *, QWidget *))
    friend class QMdiAreaPrivate;
#if QT_CONFIG(tabbar)
    friend class QMdiAreaTabBar;
#endif
    friend class QMdi::ControlContainer;
};
 
Q_DECLARE_OPERATORS_FOR_FLAGS(QMdiSubWindow::SubWindowOptions)
 
QT_END_NAMESPACE
 
#endif // QMDISUBWINDOW_H