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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 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/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;
QDrag *m_drag = nullptr;
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
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