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Diffstat (limited to 'src/platformsupport/dnd/qsimpledrag.cpp')
| -rw-r--r-- | src/platformsupport/dnd/qsimpledrag.cpp | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/src/platformsupport/dnd/qsimpledrag.cpp b/src/platformsupport/dnd/qsimpledrag.cpp new file mode 100644 index 0000000000..72da29c063 --- /dev/null +++ b/src/platformsupport/dnd/qsimpledrag.cpp @@ -0,0 +1,202 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtGui module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** 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, Nokia gives you certain additional +** rights. These rights are described in the Nokia 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. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qsimpledrag_p.h" + +#include "qbitmap.h" +#include "qdrag.h" +#include "qpixmap.h" +#include "qevent.h" +#include "qfile.h" +#include "qtextcodec.h" +#include "qguiapplication.h" +#include "qpoint.h" +#include "qbuffer.h" +#include "qimage.h" +#include "qregexp.h" +#include "qdir.h" +#include "qimagereader.h" +#include "qimagewriter.h" + +#include <private/qguiapplication_p.h> +#include <private/qdnd_p.h> + +QT_BEGIN_NAMESPACE + +class QDropData : public QInternalMimeData +{ +public: + QDropData(); + ~QDropData(); + +protected: + bool hasFormat_sys(const QString &mimeType) const; + QStringList formats_sys() const; + QVariant retrieveData_sys(const QString &mimeType, QVariant::Type type) const; +}; + +QSimpleDrag::QSimpleDrag() +{ + m_dropData = new QDropData(); + currentWindow = 0; +} + +QSimpleDrag::~QSimpleDrag() +{ + delete m_dropData; +} + +QMimeData *QSimpleDrag::platformDropData() +{ + return m_dropData; +} + +void QSimpleDrag::cancel() +{ + QDragManager *m = QDragManager::self(); +// qDebug("QDragManager::cancel"); + if (m->object->target()) { + QDragLeaveEvent dle; + QCoreApplication::sendEvent(m->object->target(), &dle); + } + +} + +void QSimpleDrag::move(const QMouseEvent *me) +{ + QWindow *window = QGuiApplication::topLevelAt(me->globalPos()); + QPoint pos; + if (window) + pos = me->globalPos() - window->geometry().topLeft(); + + QDragManager *m = QDragManager::self(); + + if (me->buttons()) { + Qt::DropAction prevAction = m->global_accepted_action; + + if (currentWindow != window) { + if (currentWindow) { + QDragLeaveEvent dle; + QCoreApplication::sendEvent(currentWindow, &dle); + m->willDrop = false; + m->global_accepted_action = Qt::IgnoreAction; + } + currentWindow = window; + if (currentWindow) { + QDragEnterEvent dee(pos, m->possible_actions, m->dropData(), me->buttons(), me->modifiers()); + QCoreApplication::sendEvent(currentWindow, &dee); + m->willDrop = dee.isAccepted() && dee.dropAction() != Qt::IgnoreAction; + m->global_accepted_action = m->willDrop ? dee.dropAction() : Qt::IgnoreAction; + } + m->updateCursor(); + } else if (window) { + Q_ASSERT(currentWindow); + QDragMoveEvent dme(pos, m->possible_actions, m->dropData(), me->buttons(), me->modifiers()); + if (m->global_accepted_action != Qt::IgnoreAction) { + dme.setDropAction(m->global_accepted_action); + dme.accept(); + } + QCoreApplication::sendEvent(currentWindow, &dme); + m->willDrop = dme.isAccepted(); + m->global_accepted_action = m->willDrop ? dme.dropAction() : Qt::IgnoreAction; + m->updatePixmap(); + m->updateCursor(); + } + if (m->global_accepted_action != prevAction) + m->emitActionChanged(m->global_accepted_action); + } +} + +void QSimpleDrag::drop(const QMouseEvent *me) +{ + QDragManager *m = QDragManager::self(); + + QWindow *window = QGuiApplication::topLevelAt(me->globalPos()); + + if (window) { + QPoint pos = me->globalPos() - window->geometry().topLeft(); + + QDropEvent de(pos, m->possible_actions, m->dropData(), me->buttons(), me->modifiers()); + QCoreApplication::sendEvent(window, &de); + if (de.isAccepted()) + m->global_accepted_action = de.dropAction(); + else + m->global_accepted_action = Qt::IgnoreAction; + } + currentWindow = 0; +} + + + +QDropData::QDropData() + : QInternalMimeData() +{ +} + +QDropData::~QDropData() +{ +} + +QVariant QDropData::retrieveData_sys(const QString &mimetype, QVariant::Type type) const +{ + QDrag *object = QDragManager::self()->object; + if (!object) + return QVariant(); + QByteArray data = object->mimeData()->data(mimetype); + if (type == QVariant::String) + return QString::fromUtf8(data); + return data; +} + +bool QDropData::hasFormat_sys(const QString &format) const +{ + return formats().contains(format); +} + +QStringList QDropData::formats_sys() const +{ + QDrag *object = QDragManager::self()->object; + if (object) + return object->mimeData()->formats(); + return QStringList(); +} + +QT_END_NAMESPACE |