diff options
author | Samuel Rødal <samuel.rodal@digia.com> | 2013-05-23 12:44:20 +0200 |
---|---|---|
committer | The Qt Project <gerrit-noreply@qt-project.org> | 2013-05-30 12:49:51 +0200 |
commit | 1df7a6a50a794721edb1bc63d268378f4f0ed7c4 (patch) | |
tree | e20fad557bfd4a3f65f41c5b5a50633a074178da /src/gui/kernel/qsimpledrag_p.h | |
parent | 853a0b764e08d5f910072b6f3fd3ff3f9dc5c0c4 (diff) |
Move QBasicDrag and QSimpleDrag to QtGui.
These are useful as default implementations of
QPlatformIntegration::drag(), instead of having it return 0 which will
lead to crashes in Qt Quick 2 and widgets applications that use drag
and drop.
Task-number: QTBUG-31288
Change-Id: I70efa139306ced5d879def0f74e3a72d3bcd64f7
Reviewed-by: Jørgen Lind <jorgen.lind@digia.com>
Diffstat (limited to 'src/gui/kernel/qsimpledrag_p.h')
-rw-r--r-- | src/gui/kernel/qsimpledrag_p.h | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/src/gui/kernel/qsimpledrag_p.h b/src/gui/kernel/qsimpledrag_p.h new file mode 100644 index 0000000000..36ea4c1ec5 --- /dev/null +++ b/src/gui/kernel/qsimpledrag_p.h @@ -0,0 +1,122 @@ +/**************************************************************************** +** +** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the QtGui module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Digia gives you certain additional +** rights. These rights are described in the Digia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QSIMPLEDRAG_H +#define QSIMPLEDRAG_H + +#include <qpa/qplatformdrag.h> + +#include <QtCore/QObject> + +QT_BEGIN_NAMESPACE + +#ifndef QT_NO_DRAGANDDROP + +class QMouseEvent; +class QWindow; +class QEventLoop; +class QDropData; +class QShapedPixmapWindow; + +class Q_GUI_EXPORT QBasicDrag : public QPlatformDrag, public QObject +{ +public: + virtual ~QBasicDrag(); + + virtual Qt::DropAction drag(QDrag *drag); + + virtual bool eventFilter(QObject *o, QEvent *e); + +protected: + QBasicDrag(); + + virtual void startDrag(); + virtual void cancel(); + virtual void move(const QMouseEvent *me); + virtual void drop(const QMouseEvent *me); + virtual void endDrag(); + + QShapedPixmapWindow *shapedPixmapWindow() const { return m_drag_icon_window; } + void updateCursor(Qt::DropAction action); + + bool canDrop() const { return m_can_drop; } + void setCanDrop(bool c) { m_can_drop = c; } + + 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; } + +private: + void enableEventFilter(); + void disableEventFilter(); + void restoreCursor(); + void exitDndEventLoop(); + + bool m_restoreCursor; + QEventLoop *m_eventLoop; + Qt::DropAction m_executed_drop_action; + bool m_can_drop; + QDrag *m_drag; + QShapedPixmapWindow *m_drag_icon_window; +}; + +class Q_GUI_EXPORT QSimpleDrag : public QBasicDrag +{ +public: + QSimpleDrag(); + virtual QMimeData *platformDropData(); + +protected: + virtual void startDrag(); + virtual void cancel(); + virtual void move(const QMouseEvent *me); + virtual void drop(const QMouseEvent *me); + +private: + QWindow *m_current_window; +}; + +#endif // QT_NO_DRAGANDDROP + +QT_END_NAMESPACE + +#endif |