144 lines
4.4 KiB
C++
144 lines
4.4 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the QtGui module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 3 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL3 included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 3 requirements
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** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 2.0 or (at your option) the GNU General
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** Public license version 3 or any later version approved by the KDE Free
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** Qt Foundation. The licenses are as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-2.0.html and
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** https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QSIMPLEDRAG_P_H
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#define QSIMPLEDRAG_P_H
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//
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// W A R N I N G
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// -------------
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//
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// This file is not part of the Qt API. It exists purely as an
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// implementation detail. This header file may change from version to
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// version without notice, or even be removed.
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//
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// We mean it.
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//
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#include <QtGui/private/qtguiglobal_p.h>
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#include <qpa/qplatformdrag.h>
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#include <QtCore/QObject>
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QT_BEGIN_NAMESPACE
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#ifndef QT_NO_DRAGANDDROP
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class QMouseEvent;
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class QWindow;
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class QEventLoop;
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class QDropData;
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class QShapedPixmapWindow;
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class QScreen;
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class Q_GUI_EXPORT QBasicDrag : public QPlatformDrag, public QObject
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{
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public:
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virtual ~QBasicDrag();
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virtual Qt::DropAction drag(QDrag *drag) override;
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void cancelDrag() override;
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virtual bool eventFilter(QObject *o, QEvent *e) override;
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protected:
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QBasicDrag();
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virtual void startDrag();
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virtual void cancel();
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virtual void move(const QPoint &globalPos) = 0;
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virtual void drop(const QPoint &globalPos) = 0;
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virtual void endDrag();
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void moveShapedPixmapWindow(const QPoint &deviceIndependentPosition);
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QShapedPixmapWindow *shapedPixmapWindow() const { return m_drag_icon_window; }
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void recreateShapedPixmapWindow(QScreen *screen, const QPoint &pos);
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void updateCursor(Qt::DropAction action);
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bool canDrop() const { return m_can_drop; }
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void setCanDrop(bool c) { m_can_drop = c; }
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bool useCompositing() const { return m_useCompositing; }
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void setUseCompositing(bool on) { m_useCompositing = on; }
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void setScreen(QScreen *screen) { m_screen = screen; }
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Qt::DropAction executedDropAction() const { return m_executed_drop_action; }
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void setExecutedDropAction(Qt::DropAction da) { m_executed_drop_action = da; }
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QDrag *drag() const { return m_drag; }
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protected:
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QWindow *m_current_window;
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private:
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void enableEventFilter();
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void disableEventFilter();
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void restoreCursor();
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void exitDndEventLoop();
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bool m_restoreCursor;
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QEventLoop *m_eventLoop;
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Qt::DropAction m_executed_drop_action;
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bool m_can_drop;
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QDrag *m_drag;
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QShapedPixmapWindow *m_drag_icon_window;
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bool m_useCompositing;
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QScreen *m_screen;
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};
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class Q_GUI_EXPORT QSimpleDrag : public QBasicDrag
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{
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public:
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QSimpleDrag();
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protected:
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virtual void startDrag() override;
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virtual void cancel() override;
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virtual void move(const QPoint &globalPos) override;
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virtual void drop(const QPoint &globalPos) override;
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};
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#endif // QT_NO_DRAGANDDROP
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QT_END_NAMESPACE
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#endif
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