qsimpledrag_p.h - mozsearch

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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

// Qt-Security score:significant reason:default

#ifndef QSIMPLEDRAG_P_H

#define QSIMPLEDRAG_P_H

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  It exists purely as an

// implementation detail.  This header file may change from version to

// version without notice, or even be removed.

//

// We mean it.

//

#include <QtGui/private/qtguiglobal_p.h>

#include <qpa/qplatformdrag.h>

#include <QtCore/QObject>

#include <QtCore/QPointer>

#include <QtGui/qdrag.h>

#include <QtGui/QWindow>

QT_REQUIRE_CONFIG(draganddrop);

QT_BEGIN_NAMESPACE

class QMouseEvent;

class QEventLoop;

class QDropData;

class QShapedPixmapWindow;

class QScreen;

class Q_GUI_EXPORT QBasicDrag : public QPlatformDrag, public QObject

public:

    ~QBasicDrag();

    virtual Qt::DropAction drag(QDrag *drag) override;

    void cancelDrag() override;

    virtual bool eventFilter(QObject *o, QEvent *e) override;

protected:

    QBasicDrag();

    virtual void startDrag();

    virtual void cancel();

    virtual void move(const QPoint &globalPos, Qt::MouseButtons b, Qt::KeyboardModifiers mods) = 0;

    virtual void drop(const QPoint &globalPos, Qt::MouseButtons b, Qt::KeyboardModifiers mods) = 0;

    virtual void endDrag();

    void moveShapedPixmapWindow(const QPoint &deviceIndependentPosition);

    QShapedPixmapWindow *shapedPixmapWindow() const { return m_drag_icon_window; }

    void recreateShapedPixmapWindow(QScreen *screen, const QPoint &pos);

    void updateCursor(Qt::DropAction action);

    bool canDrop() const { return m_can_drop; }

    void setCanDrop(bool c) { m_can_drop = c; }

    bool useCompositing() const { return m_useCompositing; }

    void setUseCompositing(bool on) { m_useCompositing = on; }

    void setScreen(QScreen *screen) { m_screen = screen; }

    Qt::DropAction executedDropAction() const { return m_executed_drop_action; }

    void  setExecutedDropAction(Qt::DropAction da) { m_executed_drop_action = da; }

    QDrag *drag() const { return m_drag; }

protected:

    QWindow *m_sourceWindow = nullptr;

    QPointer<QWindow> m_windowUnderCursor = nullptr;

private:

    void enableEventFilter();

    void disableEventFilter();

    void restoreCursor();

    void exitDndEventLoop();

#ifndef QT_NO_CURSOR

    bool m_dndHasSetOverrideCursor = false;

#endif

    QEventLoop *m_eventLoop = nullptr;

    Qt::DropAction m_executed_drop_action = Qt::IgnoreAction;

    bool m_can_drop = false;

    bool m_dragEndRequested = false;

    QPointer<QDrag> m_drag;

    QShapedPixmapWindow *m_drag_icon_window = nullptr;

    bool m_useCompositing = true;

    QScreen *m_screen = nullptr;

    QPoint m_lastPos;

};

class Q_GUI_EXPORT QSimpleDrag : public QBasicDrag

public:

    QSimpleDrag();

protected:

    virtual void startDrag() override;

    virtual void cancel() override;

    virtual void move(const QPoint &globalPos, Qt::MouseButtons b, Qt::KeyboardModifiers mods) override;

    virtual void drop(const QPoint &globalPos, Qt::MouseButtons b, Qt::KeyboardModifiers mods) override;

};

QT_END_NAMESPACE

#endif