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-rw-r--r--src/gui/kernel/kernel.pri5
-rw-r--r--src/gui/kernel/qdnd.cpp490
-rw-r--r--src/gui/kernel/qdnd_p.h333
-rw-r--r--src/gui/kernel/qdnd_qpa.cpp434
-rw-r--r--src/gui/kernel/qdrag.cpp358
-rw-r--r--src/gui/kernel/qdrag.h101
6 files changed, 1721 insertions, 0 deletions
diff --git a/src/gui/kernel/kernel.pri b/src/gui/kernel/kernel.pri
index 6fda4fd62f..8662329a2d 100644
--- a/src/gui/kernel/kernel.pri
+++ b/src/gui/kernel/kernel.pri
@@ -9,6 +9,8 @@ HEADERS += \
kernel/qclipboard.h \
kernel/qcursor.h \
kernel/qcursor_p.h \
+ kernel/qdrag.h \
+ kernel/qdnd_p.h \
kernel/qevent.h \
kernel/qevent_p.h \
kernel/qkeysequence.h \
@@ -22,6 +24,9 @@ HEADERS += \
SOURCES += \
kernel/qclipboard.cpp \
kernel/qcursor.cpp \
+ kernel/qdrag.cpp \
+ kernel/qdnd.cpp \
+ kernel/qdnd_qpa.cpp \
kernel/qevent.cpp \
kernel/qkeysequence.cpp \
kernel/qkeymapper.cpp \
diff --git a/src/gui/kernel/qdnd.cpp b/src/gui/kernel/qdnd.cpp
new file mode 100644
index 0000000000..55fc3b09fc
--- /dev/null
+++ b/src/gui/kernel/qdnd.cpp
@@ -0,0 +1,490 @@
+/****************************************************************************
+**
+** 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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** 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, 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.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qplatformdefs.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 "qdnd_p.h"
+#include "qimagereader.h"
+#include "qimagewriter.h"
+#include "qdebug.h"
+#include <ctype.h>
+
+#include <private/qguiapplication_p.h>
+
+#ifndef QT_NO_DRAGANDDROP
+
+QT_BEGIN_NAMESPACE
+
+#ifndef QT_NO_DRAGANDDROP
+
+//#define QDND_DEBUG
+
+#ifdef QDND_DEBUG
+QString dragActionsToString(Qt::DropActions actions)
+{
+ QString str;
+ if (actions == Qt::IgnoreAction) {
+ if (!str.isEmpty())
+ str += " | ";
+ str += "IgnoreAction";
+ }
+ if (actions & Qt::LinkAction) {
+ if (!str.isEmpty())
+ str += " | ";
+ str += "LinkAction";
+ }
+ if (actions & Qt::CopyAction) {
+ if (!str.isEmpty())
+ str += " | ";
+ str += "CopyAction";
+ }
+ if (actions & Qt::MoveAction) {
+ if (!str.isEmpty())
+ str += " | ";
+ str += "MoveAction";
+ }
+ if ((actions & Qt::TargetMoveAction) == Qt::TargetMoveAction ) {
+ if (!str.isEmpty())
+ str += " | ";
+ str += "TargetMoveAction";
+ }
+ return str;
+}
+
+QString KeyboardModifiersToString(Qt::KeyboardModifiers moderfies)
+{
+ QString str;
+ if (moderfies & Qt::ControlModifier) {
+ if (!str.isEmpty())
+ str += " | ";
+ str += Qt::ControlModifier;
+ }
+ if (moderfies & Qt::AltModifier) {
+ if (!str.isEmpty())
+ str += " | ";
+ str += Qt::AltModifier;
+ }
+ if (moderfies & Qt::ShiftModifier) {
+ if (!str.isEmpty())
+ str += " | ";
+ str += Qt::ShiftModifier;
+ }
+ return str;
+}
+#endif
+
+
+// the universe's only drag manager
+QDragManager *QDragManager::instance = 0;
+
+
+QDragManager::QDragManager()
+ : QObject(qApp)
+{
+ Q_ASSERT(!instance);
+
+#ifdef Q_WS_QWS
+ currentActionForOverrideCursor = Qt::IgnoreAction;
+#endif
+ object = 0;
+ beingCancelled = false;
+ restoreCursor = false;
+ willDrop = false;
+ eventLoop = 0;
+ dropData = new QDropData();
+ currentDropTarget = 0;
+#ifdef Q_WS_X11
+ xdndMimeTransferedPixmapIndex = 0;
+#endif
+}
+
+
+QDragManager::~QDragManager()
+{
+#ifndef QT_NO_CURSOR
+ if (restoreCursor)
+ QGuiApplication::restoreOverrideCursor();
+#endif
+ instance = 0;
+ delete dropData;
+}
+
+QDragManager *QDragManager::self()
+{
+ if (!instance && !QGuiApplication::closingDown())
+ instance = new QDragManager;
+ return instance;
+}
+
+QPixmap QDragManager::dragCursor(Qt::DropAction action) const
+{
+ QDragPrivate * d = dragPrivate();
+ if (d && d->customCursors.contains(action))
+ return d->customCursors[action];
+ else if (action == Qt::MoveAction)
+ return QGuiApplicationPrivate::instance()->getPixmapCursor(Qt::DragMoveCursor);
+ else if (action == Qt::CopyAction)
+ return QGuiApplicationPrivate::instance()->getPixmapCursor(Qt::DragCopyCursor);
+ else if (action == Qt::LinkAction)
+ return QGuiApplicationPrivate::instance()->getPixmapCursor(Qt::DragLinkCursor);
+#ifdef Q_WS_WIN
+ else if (action == Qt::IgnoreAction)
+ return QGuiApplicationPrivate::instance()->getPixmapCursor(Qt::ForbiddenCursor);
+#endif
+ return QPixmap();
+}
+
+bool QDragManager::hasCustomDragCursors() const
+{
+ QDragPrivate * d = dragPrivate();
+ return d && !d->customCursors.isEmpty();
+}
+
+Qt::DropAction QDragManager::defaultAction(Qt::DropActions possibleActions,
+ Qt::KeyboardModifiers modifiers) const
+{
+#ifdef QDND_DEBUG
+ qDebug("QDragManager::defaultAction(Qt::DropActions possibleActions)");
+ qDebug("keyboard modifiers : %s", KeyboardModifiersToString(modifiers).latin1());
+#endif
+
+ QDragPrivate *d = dragPrivate();
+ Qt::DropAction defaultAction = d ? d->defaultDropAction : Qt::IgnoreAction;
+
+ if (defaultAction == Qt::IgnoreAction) {
+ //This means that the drag was initiated by QDrag::start and we need to
+ //preserve the old behavior
+#ifdef Q_WS_MAC
+ defaultAction = Qt::MoveAction;
+#else
+ defaultAction = Qt::CopyAction;
+#endif
+ }
+
+#ifdef Q_WS_MAC
+ if (modifiers & Qt::ControlModifier && modifiers & Qt::AltModifier)
+ defaultAction = Qt::LinkAction;
+ else if (modifiers & Qt::AltModifier)
+ defaultAction = Qt::CopyAction;
+ else if (modifiers & Qt::ControlModifier)
+ defaultAction = Qt::MoveAction;
+#else
+ if (modifiers & Qt::ControlModifier && modifiers & Qt::ShiftModifier)
+ defaultAction = Qt::LinkAction;
+ else if (modifiers & Qt::ControlModifier)
+ defaultAction = Qt::CopyAction;
+ else if (modifiers & Qt::ShiftModifier)
+ defaultAction = Qt::MoveAction;
+ else if (modifiers & Qt::AltModifier)
+ defaultAction = Qt::LinkAction;
+#endif
+
+ // if the object is set take the list of possibles from it
+ if (object)
+ possibleActions = object->d_func()->possible_actions;
+
+#ifdef QDND_DEBUG
+ qDebug("possible actions : %s", dragActionsToString(possibleActions).latin1());
+#endif
+
+ // Check if the action determined is allowed
+ if (!(possibleActions & defaultAction)) {
+ if (possibleActions & Qt::CopyAction)
+ defaultAction = Qt::CopyAction;
+ else if (possibleActions & Qt::MoveAction)
+ defaultAction = Qt::MoveAction;
+ else if (possibleActions & Qt::LinkAction)
+ defaultAction = Qt::LinkAction;
+ else
+ defaultAction = Qt::IgnoreAction;
+ }
+
+#ifdef QDND_DEBUG
+ qDebug("default action : %s", dragActionsToString(defaultAction).latin1());
+#endif
+
+ return defaultAction;
+}
+
+void QDragManager::setCurrentTarget(QObject *target, bool dropped)
+{
+ if (currentDropTarget == target)
+ return;
+
+ currentDropTarget = target;
+ if (!dropped && object) {
+ object->d_func()->target = target;
+ emit object->targetChanged(target);
+ }
+
+}
+
+QObject *QDragManager::currentTarget()
+{
+ return currentDropTarget;
+}
+
+#endif
+
+QDropData::QDropData()
+ : QInternalMimeData()
+{
+}
+
+QDropData::~QDropData()
+{
+}
+#endif // QT_NO_DRAGANDDROP
+
+#if !(defined(QT_NO_DRAGANDDROP) && defined(QT_NO_CLIPBOARD))
+
+static QStringList imageReadMimeFormats()
+{
+ QStringList formats;
+ QList<QByteArray> imageFormats = QImageReader::supportedImageFormats();
+ for (int i = 0; i < imageFormats.size(); ++i) {
+ QString format = QLatin1String("image/");
+ format += QString::fromLatin1(imageFormats.at(i).toLower());
+ formats.append(format);
+ }
+
+ //put png at the front because it is best
+ int pngIndex = formats.indexOf(QLatin1String("image/png"));
+ if (pngIndex != -1 && pngIndex != 0)
+ formats.move(pngIndex, 0);
+
+ return formats;
+}
+
+
+static QStringList imageWriteMimeFormats()
+{
+ QStringList formats;
+ QList<QByteArray> imageFormats = QImageWriter::supportedImageFormats();
+ for (int i = 0; i < imageFormats.size(); ++i) {
+ QString format = QLatin1String("image/");
+ format += QString::fromLatin1(imageFormats.at(i).toLower());
+ formats.append(format);
+ }
+
+ //put png at the front because it is best
+ int pngIndex = formats.indexOf(QLatin1String("image/png"));
+ if (pngIndex != -1 && pngIndex != 0)
+ formats.move(pngIndex, 0);
+
+ return formats;
+}
+
+QInternalMimeData::QInternalMimeData()
+ : QMimeData()
+{
+}
+
+QInternalMimeData::~QInternalMimeData()
+{
+}
+
+bool QInternalMimeData::hasFormat(const QString &mimeType) const
+{
+ bool foundFormat = hasFormat_sys(mimeType);
+ if (!foundFormat && mimeType == QLatin1String("application/x-qt-image")) {
+ QStringList imageFormats = imageReadMimeFormats();
+ for (int i = 0; i < imageFormats.size(); ++i) {
+ if ((foundFormat = hasFormat_sys(imageFormats.at(i))))
+ break;
+ }
+ }
+ return foundFormat;
+}
+
+QStringList QInternalMimeData::formats() const
+{
+ QStringList realFormats = formats_sys();
+ if (!realFormats.contains(QLatin1String("application/x-qt-image"))) {
+ QStringList imageFormats = imageReadMimeFormats();
+ for (int i = 0; i < imageFormats.size(); ++i) {
+ if (realFormats.contains(imageFormats.at(i))) {
+ realFormats += QLatin1String("application/x-qt-image");
+ break;
+ }
+ }
+ }
+ return realFormats;
+}
+
+QVariant QInternalMimeData::retrieveData(const QString &mimeType, QVariant::Type type) const
+{
+ QVariant data = retrieveData_sys(mimeType, type);
+ if (mimeType == QLatin1String("application/x-qt-image")) {
+ if (data.isNull() || (data.type() == QVariant::ByteArray && data.toByteArray().isEmpty())) {
+ // try to find an image
+ QStringList imageFormats = imageReadMimeFormats();
+ for (int i = 0; i < imageFormats.size(); ++i) {
+ data = retrieveData_sys(imageFormats.at(i), type);
+ if (data.isNull() || (data.type() == QVariant::ByteArray && data.toByteArray().isEmpty()))
+ continue;
+ break;
+ }
+ }
+ // we wanted some image type, but all we got was a byte array. Convert it to an image.
+ if (data.type() == QVariant::ByteArray
+ && (type == QVariant::Image || type == QVariant::Pixmap || type == QVariant::Bitmap))
+ data = QImage::fromData(data.toByteArray());
+
+ } else if (mimeType == QLatin1String("application/x-color") && data.type() == QVariant::ByteArray) {
+ QColor c;
+ QByteArray ba = data.toByteArray();
+ if (ba.size() == 8) {
+ ushort * colBuf = (ushort *)ba.data();
+ c.setRgbF(qreal(colBuf[0]) / qreal(0xFFFF),
+ qreal(colBuf[1]) / qreal(0xFFFF),
+ qreal(colBuf[2]) / qreal(0xFFFF),
+ qreal(colBuf[3]) / qreal(0xFFFF));
+ data = c;
+ } else {
+ qWarning("Qt: Invalid color format");
+ }
+ } else if (data.type() != type && data.type() == QVariant::ByteArray) {
+ // try to use mime data's internal conversion stuf.
+ QInternalMimeData *that = const_cast<QInternalMimeData *>(this);
+ that->setData(mimeType, data.toByteArray());
+ data = QMimeData::retrieveData(mimeType, type);
+ that->clear();
+ }
+ return data;
+}
+
+bool QInternalMimeData::canReadData(const QString &mimeType)
+{
+ return imageReadMimeFormats().contains(mimeType);
+}
+
+// helper functions for rendering mimedata to the system, this is needed because QMimeData is in core.
+QStringList QInternalMimeData::formatsHelper(const QMimeData *data)
+{
+ QStringList realFormats = data->formats();
+ if (realFormats.contains(QLatin1String("application/x-qt-image"))) {
+ // add all supported image formats
+ QStringList imageFormats = imageWriteMimeFormats();
+ for (int i = 0; i < imageFormats.size(); ++i) {
+ if (!realFormats.contains(imageFormats.at(i)))
+ realFormats.append(imageFormats.at(i));
+ }
+ }
+ return realFormats;
+}
+
+bool QInternalMimeData::hasFormatHelper(const QString &mimeType, const QMimeData *data)
+{
+
+ bool foundFormat = data->hasFormat(mimeType);
+ if (!foundFormat) {
+ if (mimeType == QLatin1String("application/x-qt-image")) {
+ // check all supported image formats
+ QStringList imageFormats = imageWriteMimeFormats();
+ for (int i = 0; i < imageFormats.size(); ++i) {
+ if ((foundFormat = data->hasFormat(imageFormats.at(i))))
+ break;
+ }
+ } else if (mimeType.startsWith(QLatin1String("image/"))) {
+ return data->hasImage() && imageWriteMimeFormats().contains(mimeType);
+ }
+ }
+ return foundFormat;
+}
+
+QByteArray QInternalMimeData::renderDataHelper(const QString &mimeType, const QMimeData *data)
+{
+ QByteArray ba;
+ if (mimeType == QLatin1String("application/x-color")) {
+ /* QMimeData can only provide colors as QColor or the name
+ of a color as a QByteArray or a QString. So we need to do
+ the conversion to application/x-color here.
+ The application/x-color format is :
+ type: application/x-color
+ format: 16
+ data[0]: red
+ data[1]: green
+ data[2]: blue
+ data[3]: opacity
+ */
+ ba.resize(8);
+ ushort * colBuf = (ushort *)ba.data();
+ QColor c = qvariant_cast<QColor>(data->colorData());
+ colBuf[0] = ushort(c.redF() * 0xFFFF);
+ colBuf[1] = ushort(c.greenF() * 0xFFFF);
+ colBuf[2] = ushort(c.blueF() * 0xFFFF);
+ colBuf[3] = ushort(c.alphaF() * 0xFFFF);
+ } else {
+ ba = data->data(mimeType);
+ if (ba.isEmpty()) {
+ if (mimeType == QLatin1String("application/x-qt-image") && data->hasImage()) {
+ QImage image = qvariant_cast<QImage>(data->imageData());
+ QBuffer buf(&ba);
+ buf.open(QBuffer::WriteOnly);
+ // would there not be PNG ??
+ image.save(&buf, "PNG");
+ } else if (mimeType.startsWith(QLatin1String("image/")) && data->hasImage()) {
+ QImage image = qvariant_cast<QImage>(data->imageData());
+ QBuffer buf(&ba);
+ buf.open(QBuffer::WriteOnly);
+ image.save(&buf, mimeType.mid(mimeType.indexOf(QLatin1Char('/')) + 1).toLatin1().toUpper());
+ }
+ }
+ }
+ return ba;
+}
+
+#endif // QT_NO_DRAGANDDROP && QT_NO_CLIPBOARD
+
+QT_END_NAMESPACE
diff --git a/src/gui/kernel/qdnd_p.h b/src/gui/kernel/qdnd_p.h
new file mode 100644
index 0000000000..cc74889bcb
--- /dev/null
+++ b/src/gui/kernel/qdnd_p.h
@@ -0,0 +1,333 @@
+/****************************************************************************
+**
+** 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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** 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, 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.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QDND_P_H
+#define QDND_P_H
+
+//
+// W A R N I N G
+// -------------
+//
+// This file is not part of the Qt API. It exists for the convenience
+// of other Qt classes. This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "QtCore/qobject.h"
+#include "QtCore/qmap.h"
+#include "QtGui/qmime.h"
+#include "QtGui/qdrag.h"
+#include "QtGui/qpixmap.h"
+#include "QtGui/qcursor.h"
+#include "QtCore/qpoint.h"
+#include "private/qobject_p.h"
+#ifdef Q_WS_MAC
+# include "private/qt_mac_p.h"
+#endif
+
+#if defined(Q_WS_WIN)
+# include <qt_windows.h>
+# include <objidl.h>
+#endif
+
+QT_BEGIN_NAMESPACE
+
+class QEventLoop;
+
+#if !(defined(QT_NO_DRAGANDDROP) && defined(QT_NO_CLIPBOARD))
+
+class Q_GUI_EXPORT QInternalMimeData : public QMimeData
+{
+ Q_OBJECT
+public:
+ QInternalMimeData();
+ ~QInternalMimeData();
+
+ bool hasFormat(const QString &mimeType) const;
+ QStringList formats() const;
+ static bool canReadData(const QString &mimeType);
+
+
+ static QStringList formatsHelper(const QMimeData *data);
+ static bool hasFormatHelper(const QString &mimeType, const QMimeData *data);
+ static QByteArray renderDataHelper(const QString &mimeType, const QMimeData *data);
+
+protected:
+ QVariant retrieveData(const QString &mimeType, QVariant::Type type) const;
+
+ virtual bool hasFormat_sys(const QString &mimeType) const = 0;
+ virtual QStringList formats_sys() const = 0;
+ virtual QVariant retrieveData_sys(const QString &mimeType, QVariant::Type type) const = 0;
+};
+
+#ifdef Q_WS_WIN
+class QOleDataObject : public IDataObject
+{
+public:
+ explicit QOleDataObject(QMimeData *mimeData);
+ virtual ~QOleDataObject();
+
+ void releaseQt();
+ const QMimeData *mimeData() const;
+ DWORD reportedPerformedEffect() const;
+
+ // IUnknown methods
+ STDMETHOD(QueryInterface)(REFIID riid, void FAR* FAR* ppvObj);
+ STDMETHOD_(ULONG,AddRef)(void);
+ STDMETHOD_(ULONG,Release)(void);
+
+ // IDataObject methods
+ STDMETHOD(GetData)(LPFORMATETC pformatetcIn, LPSTGMEDIUM pmedium);
+ STDMETHOD(GetDataHere)(LPFORMATETC pformatetc, LPSTGMEDIUM pmedium);
+ STDMETHOD(QueryGetData)(LPFORMATETC pformatetc);
+ STDMETHOD(GetCanonicalFormatEtc)(LPFORMATETC pformatetc, LPFORMATETC pformatetcOut);
+ STDMETHOD(SetData)(LPFORMATETC pformatetc, STGMEDIUM FAR * pmedium,
+ BOOL fRelease);
+ STDMETHOD(EnumFormatEtc)(DWORD dwDirection, LPENUMFORMATETC FAR* ppenumFormatEtc);
+ STDMETHOD(DAdvise)(FORMATETC FAR* pFormatetc, DWORD advf,
+ LPADVISESINK pAdvSink, DWORD FAR* pdwConnection);
+ STDMETHOD(DUnadvise)(DWORD dwConnection);
+ STDMETHOD(EnumDAdvise)(LPENUMSTATDATA FAR* ppenumAdvise);
+
+private:
+ ULONG m_refs;
+ QPointer<QMimeData> data;
+ int CF_PERFORMEDDROPEFFECT;
+ DWORD performedEffect;
+};
+
+class QOleEnumFmtEtc : public IEnumFORMATETC
+{
+public:
+ explicit QOleEnumFmtEtc(const QVector<FORMATETC> &fmtetcs);
+ explicit QOleEnumFmtEtc(const QVector<LPFORMATETC> &lpfmtetcs);
+ virtual ~QOleEnumFmtEtc();
+
+ bool isNull() const;
+
+ // IUnknown methods
+ STDMETHOD(QueryInterface)(REFIID riid, void FAR* FAR* ppvObj);
+ STDMETHOD_(ULONG,AddRef)(void);
+ STDMETHOD_(ULONG,Release)(void);
+
+ // IEnumFORMATETC methods
+ STDMETHOD(Next)(ULONG celt, LPFORMATETC rgelt, ULONG FAR* pceltFetched);
+ STDMETHOD(Skip)(ULONG celt);
+ STDMETHOD(Reset)(void);
+ STDMETHOD(Clone)(LPENUMFORMATETC FAR* newEnum);
+
+private:
+ bool copyFormatEtc(LPFORMATETC dest, LPFORMATETC src) const;
+
+ ULONG m_dwRefs;
+ ULONG m_nIndex;
+ QVector<LPFORMATETC> m_lpfmtetcs;
+ bool m_isNull;
+};
+
+#endif
+
+#endif //QT_NO_DRAGANDDROP && QT_NO_CLIPBOARD
+
+#ifndef QT_NO_DRAGANDDROP
+
+class QDragPrivate : public QObjectPrivate
+{
+public:
+ QObject *source;
+ QObject *target;
+ QMimeData *data;
+ QPixmap pixmap;
+ QPoint hotspot;
+ Qt::DropActions possible_actions;
+ Qt::DropAction executed_action;
+ QMap<Qt::DropAction, QPixmap> customCursors;
+ Qt::DropAction defaultDropAction;
+};
+
+class QDropData : public QInternalMimeData
+{
+ Q_OBJECT
+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;
+
+#if defined(Q_WS_WIN)
+public:
+ LPDATAOBJECT currentDataObject;
+#endif
+};
+
+class Q_GUI_EXPORT QDragManager: public QObject {
+ Q_OBJECT
+
+ QDragManager();
+ ~QDragManager();
+ // only friend classes can use QDragManager.
+ friend class QDrag;
+ friend class QDragMoveEvent;
+ friend class QDropEvent;
+ friend class QApplication;
+
+ bool eventFilter(QObject *, QEvent *);
+ void timerEvent(QTimerEvent*);
+
+public:
+ Qt::DropAction drag(QDrag *);
+
+ void cancel(bool deleteSource = true);
+ void move(const QPoint &);
+ void drop();
+ void updatePixmap();
+ QObject *source() const { return object ? object->d_func()->source : 0; }
+ QDragPrivate *dragPrivate() const { return object ? object->d_func() : 0; }
+ static QDragPrivate *dragPrivate(QDrag *drag) { return drag ? drag->d_func() : 0; }
+
+ static QDragManager *self();
+ Qt::DropAction defaultAction(Qt::DropActions possibleActions,
+ Qt::KeyboardModifiers modifiers) const;
+
+ QDrag *object;
+
+ void updateCursor();
+
+ bool beingCancelled;
+ bool restoreCursor;
+ bool willDrop;
+ QEventLoop *eventLoop;
+
+ QPixmap dragCursor(Qt::DropAction action) const;
+
+ bool hasCustomDragCursors() const;
+
+ QDropData *dropData;
+
+ void emitActionChanged(Qt::DropAction newAction) { if (object) emit object->actionChanged(newAction); }
+
+ void setCurrentTarget(QObject *target, bool dropped = false);
+ QObject *currentTarget();
+
+#ifdef Q_WS_X11
+ QPixmap xdndMimeTransferedPixmap[2];
+ int xdndMimeTransferedPixmapIndex;
+#endif
+
+private:
+#if defined(Q_WS_QWS) || defined(Q_WS_QPA)
+ Qt::DropAction currentActionForOverrideCursor;
+#endif
+#ifdef Q_OS_SYMBIAN
+#ifndef QT_NO_CURSOR
+ QCursor overrideCursor;
+#endif
+#endif
+ QObject *currentDropTarget;
+
+ static QDragManager *instance;
+ Q_DISABLE_COPY(QDragManager)
+};
+
+
+#if defined(Q_WS_WIN)
+
+class QOleDropTarget : public IDropTarget
+{
+public:
+ QOleDropTarget(QWidget* w);
+ virtual ~QOleDropTarget() {}
+
+ void releaseQt();
+
+ // IUnknown methods
+ STDMETHOD(QueryInterface)(REFIID riid, void FAR* FAR* ppvObj);
+ STDMETHOD_(ULONG, AddRef)(void);
+ STDMETHOD_(ULONG, Release)(void);
+
+ // IDropTarget methods
+ STDMETHOD(DragEnter)(LPDATAOBJECT pDataObj, DWORD grfKeyState, POINTL pt, LPDWORD pdwEffect);
+ STDMETHOD(DragOver)(DWORD grfKeyState, POINTL pt, LPDWORD pdwEffect);
+ STDMETHOD(DragLeave)();
+ STDMETHOD(Drop)(LPDATAOBJECT pDataObj, DWORD grfKeyState, POINTL pt, LPDWORD pdwEffect);
+
+private:
+ ULONG m_refs;
+ QWidget* widget;
+ QPointer<QWidget> currentWidget;
+ QRect answerRect;
+ QPoint lastPoint;
+ DWORD chosenEffect;
+ DWORD lastKeyState;
+
+ void sendDragEnterEvent(QWidget *to, DWORD grfKeyState, POINTL pt, LPDWORD pdwEffect);
+};
+
+#endif
+
+#if defined (Q_WS_MAC)
+class QCocoaDropData : public QInternalMimeData
+{
+ Q_OBJECT
+public:
+ QCocoaDropData(CFStringRef pasteboard);
+ ~QCocoaDropData();
+
+protected:
+ bool hasFormat_sys(const QString &mimeType) const;
+ QStringList formats_sys() const;
+ QVariant retrieveData_sys(const QString &mimeType, QVariant::Type type) const;
+public:
+ CFStringRef dropPasteboard;
+};
+#endif
+
+#endif // !QT_NO_DRAGANDDROP
+
+
+QT_END_NAMESPACE
+
+#endif // QDND_P_H
diff --git a/src/gui/kernel/qdnd_qpa.cpp b/src/gui/kernel/qdnd_qpa.cpp
new file mode 100644
index 0000000000..e5715bb568
--- /dev/null
+++ b/src/gui/kernel/qdnd_qpa.cpp
@@ -0,0 +1,434 @@
+/****************************************************************************
+**
+** 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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** 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, 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.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qguiapplication.h"
+
+#ifndef QT_NO_DRAGANDDROP
+
+#include "qdatetime.h"
+#include "qbitmap.h"
+#include "qcursor.h"
+#include "qevent.h"
+#include "qpainter.h"
+#include "qdnd_p.h"
+#include "qwindow.h"
+
+QT_BEGIN_NAMESPACE
+
+QT_USE_NAMESPACE
+
+static QPixmap *defaultPm = 0;
+static const int default_pm_hotx = -2;
+static const int default_pm_hoty = -16;
+static const char *const default_pm[] = {
+"13 9 3 1",
+". c None",
+" c #000000",
+"X c #FFFFFF",
+"X X X X X X X",
+" X X X X X X ",
+"X ......... X",
+" X.........X ",
+"X ......... X",
+" X.........X ",
+"X ......... X",
+" X X X X X X ",
+"X X X X X X X",
+};
+
+// Shift/Ctrl handling, and final drop status
+static Qt::DropAction global_accepted_action = Qt::CopyAction;
+static Qt::DropActions possible_actions = Qt::IgnoreAction;
+
+
+// static variables in place of a proper cross-process solution
+static QDrag *drag_object;
+static bool qt_qws_dnd_dragging = false;
+
+
+static Qt::KeyboardModifiers oldstate;
+
+class QShapedPixmapWindow : public QWindow {
+ QPixmap pixmap;
+public:
+ QShapedPixmapWindow() :
+ QWindow(0)
+ {
+ setWindowFlags(Qt::Tool | Qt::FramelessWindowHint | Qt::X11BypassWindowManagerHint);
+ // ### Should we set the surface type to raster?
+ // ### FIXME
+// setAttribute(Qt::WA_TransparentForMouseEvents);
+ }
+
+ void move(const QPoint &p) {
+ QRect g = geometry();
+ g.setTopLeft(p);
+ setGeometry(g);
+ }
+ void setPixmap(QPixmap pm)
+ {
+ pixmap = pm;
+ // ###
+// if (!pixmap.mask().isNull()) {
+// setMask(pixmap.mask());
+// } else {
+// clearMask();
+// }
+// resize(pm.width(),pm.height());
+ }
+
+ // ### Get it painted again!
+// void paintEvent(QPaintEvent*)
+// {
+// QPainter p(this);
+// p.drawPixmap(0,0,pixmap);
+// }
+};
+
+
+static QShapedPixmapWindow *qt_qws_dnd_deco = 0;
+
+
+void QDragManager::updatePixmap()
+{
+ if (qt_qws_dnd_deco) {
+ QPixmap pm;
+ QPoint pm_hot(default_pm_hotx,default_pm_hoty);
+ if (drag_object) {
+ pm = drag_object->pixmap();
+ if (!pm.isNull())
+ pm_hot = drag_object->hotSpot();
+ }
+ if (pm.isNull()) {
+ if (!defaultPm)
+ defaultPm = new QPixmap(default_pm);
+ pm = *defaultPm;
+ }
+ qt_qws_dnd_deco->setPixmap(pm);
+ qt_qws_dnd_deco->move(QCursor::pos()-pm_hot);
+ if (willDrop) {
+ qt_qws_dnd_deco->show();
+ } else {
+ qt_qws_dnd_deco->hide();
+ }
+ }
+}
+
+void QDragManager::timerEvent(QTimerEvent *) { }
+
+void QDragManager::move(const QPoint &) { }
+
+void QDragManager::updateCursor()
+{
+#ifndef QT_NO_CURSOR
+ if (willDrop) {
+ if (qt_qws_dnd_deco)
+ qt_qws_dnd_deco->show();
+ if (currentActionForOverrideCursor != global_accepted_action) {
+ QGuiApplication::changeOverrideCursor(QCursor(dragCursor(global_accepted_action), 0, 0));
+ currentActionForOverrideCursor = global_accepted_action;
+ }
+ } else {
+ QCursor *overrideCursor = QGuiApplication::overrideCursor();
+ if (!overrideCursor || overrideCursor->shape() != Qt::ForbiddenCursor) {
+ QGuiApplication::changeOverrideCursor(QCursor(Qt::ForbiddenCursor));
+ currentActionForOverrideCursor = Qt::IgnoreAction;
+ }
+ if (qt_qws_dnd_deco)
+ qt_qws_dnd_deco->hide();
+ }
+#endif
+}
+
+
+bool QDragManager::eventFilter(QObject *o, QEvent *e)
+{
+#if 0
+ // ###
+ if (beingCancelled) {
+ if (e->type() == QEvent::KeyRelease && static_cast<QKeyEvent*>(e)->key() == Qt::Key_Escape) {
+ qApp->removeEventFilter(this);
+ Q_ASSERT(object == 0);
+ beingCancelled = false;
+ eventLoop->exit();
+ return true; // block the key release
+ }
+ return false;
+ }
+
+
+
+ if (!o->isWidgetType())
+ return false;
+
+ switch(e->type()) {
+ case QEvent::ShortcutOverride:
+ // prevent accelerators from firing while dragging
+ e->accept();
+ return true;
+
+ case QEvent::KeyPress:
+ case QEvent::KeyRelease:
+ {
+ QKeyEvent *ke = ((QKeyEvent*)e);
+ if (ke->key() == Qt::Key_Escape && e->type() == QEvent::KeyPress) {
+ cancel();
+ qApp->removeEventFilter(this);
+ beingCancelled = false;
+ eventLoop->exit();
+ } else {
+ updateCursor();
+ }
+ return true; // Eat all key events
+ }
+
+ case QEvent::MouseButtonPress:
+ case QEvent::MouseMove:
+ {
+ if (!object) { //#### this should not happen
+ qWarning("QDragManager::eventFilter: No object");
+ return true;
+ }
+
+ QDragManager *manager = QDragManager::self();
+ QMimeData *dropData = manager->object ? manager->dragPrivate()->data : manager->dropData;
+ if (manager->object)
+ possible_actions = manager->dragPrivate()->possible_actions;
+ else
+ possible_actions = Qt::IgnoreAction;
+
+ QMouseEvent *me = (QMouseEvent *)e;
+ if (me->buttons()) {
+ Qt::DropAction prevAction = global_accepted_action;
+ QWidget *cw = QApplication::widgetAt(me->globalPos());
+
+ // Fix for when we move mouse on to the deco widget
+ if (qt_qws_dnd_deco && cw == qt_qws_dnd_deco)
+ cw = object->target();
+
+ while (cw && !cw->acceptDrops() && !cw->isWindow())
+ cw = cw->parentWidget();
+
+ if (object->target() != cw) {
+ if (object->target()) {
+ QDragLeaveEvent dle;
+ QCoreApplication::sendEvent(object->target(), &dle);
+ willDrop = false;
+ global_accepted_action = Qt::IgnoreAction;
+ updateCursor();
+ restoreCursor = true;
+ object->d_func()->target = 0;
+ }
+ if (cw && cw->acceptDrops()) {
+ object->d_func()->target = cw;
+ QDragEnterEvent dee(cw->mapFromGlobal(me->globalPos()), possible_actions, dropData,
+ me->buttons(), me->modifiers());
+ QCoreApplication::sendEvent(object->target(), &dee);
+ willDrop = dee.isAccepted() && dee.dropAction() != Qt::IgnoreAction;
+ global_accepted_action = willDrop ? dee.dropAction() : Qt::IgnoreAction;
+ updateCursor();
+ restoreCursor = true;
+ }
+ } else if (cw) {
+ QDragMoveEvent dme(cw->mapFromGlobal(me->globalPos()), possible_actions, dropData,
+ me->buttons(), me->modifiers());
+ if (global_accepted_action != Qt::IgnoreAction) {
+ dme.setDropAction(global_accepted_action);
+ dme.accept();
+ }
+ QCoreApplication::sendEvent(cw, &dme);
+ willDrop = dme.isAccepted();
+ global_accepted_action = willDrop ? dme.dropAction() : Qt::IgnoreAction;
+ updatePixmap();
+ updateCursor();
+ }
+ if (global_accepted_action != prevAction)
+ emitActionChanged(global_accepted_action);
+ }
+ return true; // Eat all mouse events
+ }
+
+ case QEvent::MouseButtonRelease:
+ {
+ qApp->removeEventFilter(this);
+ if (restoreCursor) {
+ willDrop = false;
+#ifndef QT_NO_CURSOR
+ QGuiApplication::restoreOverrideCursor();
+#endif
+ restoreCursor = false;
+ }
+ if (object && object->target()) {
+ QMouseEvent *me = (QMouseEvent *)e;
+
+ QDragManager *manager = QDragManager::self();
+ QMimeData *dropData = manager->object ? manager->dragPrivate()->data : manager->dropData;
+
+ QDropEvent de(object->target()->mapFromGlobal(me->globalPos()), possible_actions, dropData,
+ me->buttons(), me->modifiers());
+ QCoreApplication::sendEvent(object->target(), &de);
+ if (de.isAccepted())
+ global_accepted_action = de.dropAction();
+ else
+ global_accepted_action = Qt::IgnoreAction;
+
+ if (object)
+ object->deleteLater();
+ drag_object = object = 0;
+ }
+ eventLoop->exit();
+ return true; // Eat all mouse events
+ }
+
+ default:
+ break;
+ }
+#endif
+ return false;
+}
+
+Qt::DropAction QDragManager::drag(QDrag *o)
+{
+ if (object == o || !o || !o->source())
+ return Qt::IgnoreAction;
+
+ if (object) {
+ cancel();
+ qApp->removeEventFilter(this);
+ beingCancelled = false;
+ }
+
+ object = drag_object = o;
+ qt_qws_dnd_deco = new QShapedPixmapWindow();
+ oldstate = Qt::NoModifier; // #### Should use state that caused the drag
+// drag_mode = mode;
+
+ willDrop = false;
+ updatePixmap();
+ updateCursor();
+ restoreCursor = true;
+ object->d_func()->target = 0;
+ qApp->installEventFilter(this);
+
+ global_accepted_action = Qt::CopyAction;
+#ifndef QT_NO_CURSOR
+ qApp->setOverrideCursor(Qt::ArrowCursor);
+ restoreCursor = true;
+ updateCursor();
+#endif
+
+ qt_qws_dnd_dragging = true;
+
+ eventLoop = new QEventLoop;
+ (void) eventLoop->exec();
+ delete eventLoop;
+ eventLoop = 0;
+
+ delete qt_qws_dnd_deco;
+ qt_qws_dnd_deco = 0;
+ qt_qws_dnd_dragging = false;
+
+
+ return global_accepted_action;
+}
+
+
+void QDragManager::cancel(bool deleteSource)
+{
+// qDebug("QDragManager::cancel");
+ beingCancelled = true;
+
+ if (object->target()) {
+ QDragLeaveEvent dle;
+ QCoreApplication::sendEvent(object->target(), &dle);
+ }
+
+#ifndef QT_NO_CURSOR
+ if (restoreCursor) {
+ QGuiApplication::restoreOverrideCursor();
+ restoreCursor = false;
+ }
+#endif
+
+ if (drag_object) {
+ if (deleteSource)
+ object->deleteLater();
+ drag_object = object = 0;
+ }
+
+ delete qt_qws_dnd_deco;
+ qt_qws_dnd_deco = 0;
+
+ global_accepted_action = Qt::IgnoreAction;
+}
+
+
+void QDragManager::drop()
+{
+}
+
+QVariant QDropData::retrieveData_sys(const QString &mimetype, QVariant::Type type) const
+{
+ if (!drag_object)
+ return QVariant();
+ QByteArray data = drag_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
+{
+ if (drag_object)
+ return drag_object->mimeData()->formats();
+ return QStringList();
+}
+
+
+#endif // QT_NO_DRAGANDDROP
+
+
+QT_END_NAMESPACE
diff --git a/src/gui/kernel/qdrag.cpp b/src/gui/kernel/qdrag.cpp
new file mode 100644
index 0000000000..bb56d061c1
--- /dev/null
+++ b/src/gui/kernel/qdrag.cpp
@@ -0,0 +1,358 @@
+/****************************************************************************
+**
+** 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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** 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, 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.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <qdrag.h>
+#include <qpixmap.h>
+#include <qpoint.h>
+#include "qdnd_p.h"
+
+#ifndef QT_NO_DRAGANDDROP
+
+QT_BEGIN_NAMESPACE
+
+/*!
+ \class QDrag
+ \brief The QDrag class provides support for MIME-based drag and drop data
+ transfer.
+
+ Drag and drop is an intuitive way for users to copy or move data around in an
+ application, and is used in many desktop environments as a mechanism for copying
+ data between applications. Drag and drop support in Qt is centered around the
+ QDrag class that handles most of the details of a drag and drop operation.
+
+ The data to be transferred by the drag and drop operation is contained in a
+ QMimeData object. This is specified with the setMimeData() function in the
+ following way:
+
+ \snippet doc/src/snippets/dragging/mainwindow.cpp 1
+
+ Note that setMimeData() assigns ownership of the QMimeData object to the
+ QDrag object. The QDrag must be constructed on the heap with a parent QObject
+ to ensure that Qt can clean up after the drag and drop operation has been
+ completed.
+
+ A pixmap can be used to represent the data while the drag is in
+ progress, and will move with the cursor to the drop target. This
+ pixmap typically shows an icon that represents the MIME type of
+ the data being transferred, but any pixmap can be set with
+ setPixmap(). The cursor's hot spot can be given a position
+ relative to the top-left corner of the pixmap with the
+ setHotSpot() function. The following code positions the pixmap so
+ that the cursor's hot spot points to the center of its bottom
+ edge:
+
+ \snippet doc/src/snippets/separations/finalwidget.cpp 2
+
+ \note On X11, the pixmap may not be able to keep up with the mouse
+ movements if the hot spot causes the pixmap to be displayed
+ directly under the cursor.
+
+ The source and target widgets can be found with source() and target().
+ These functions are often used to determine whether drag and drop operations
+ started and finished at the same widget, so that special behavior can be
+ implemented.
+
+ QDrag only deals with the drag and drop operation itself. It is up to the
+ developer to decide when a drag operation begins, and how a QDrag object should
+ be constructed and used. For a given widget, it is often necessary to
+ reimplement \l{QWidget::mousePressEvent()}{mousePressEvent()} to determine
+ whether the user has pressed a mouse button, and reimplement
+ \l{QWidget::mouseMoveEvent()}{mouseMoveEvent()} to check whether a QDrag is
+ required.
+
+ \sa {Drag and Drop}, QClipboard, QMimeData, QWindowsMime, QMacPasteboardMime,
+ {Draggable Icons Example}, {Draggable Text Example}, {Drop Site Example},
+ {Fridge Magnets Example}
+*/
+
+/*!
+ Constructs a new drag object for the widget specified by \a dragSource.
+*/
+QDrag::QDrag(QObject *dragSource)
+ : QObject(*new QDragPrivate, dragSource)
+{
+ Q_D(QDrag);
+ d->source = dragSource;
+ d->target = 0;
+ d->data = 0;
+ d->hotspot = QPoint(-10, -10);
+ d->possible_actions = Qt::CopyAction;
+ d->executed_action = Qt::IgnoreAction;
+ d->defaultDropAction = Qt::IgnoreAction;
+}
+
+/*!
+ Destroys the drag object.
+*/
+QDrag::~QDrag()
+{
+ Q_D(QDrag);
+ delete d->data;
+ QDragManager *manager = QDragManager::self();
+ if (manager && manager->object == this)
+ manager->cancel(false);
+}
+
+/*!
+ Sets the data to be sent to the given MIME \a data. Ownership of the data is
+ transferred to the QDrag object.
+*/
+void QDrag::setMimeData(QMimeData *data)
+{
+ Q_D(QDrag);
+ if (d->data == data)
+ return;
+ if (d->data != 0)
+ delete d->data;
+ d->data = data;
+}
+
+/*!
+ Returns the MIME data that is encapsulated by the drag object.
+*/
+QMimeData *QDrag::mimeData() const
+{
+ Q_D(const QDrag);
+ return d->data;
+}
+
+/*!
+ Sets \a pixmap as the pixmap used to represent the data in a drag
+ and drop operation. You can only set a pixmap before the drag is
+ started.
+*/
+void QDrag::setPixmap(const QPixmap &pixmap)
+{
+ Q_D(QDrag);
+ d->pixmap = pixmap;
+}
+
+/*!
+ Returns the pixmap used to represent the data in a drag and drop operation.
+*/
+QPixmap QDrag::pixmap() const
+{
+ Q_D(const QDrag);
+ return d->pixmap;
+}
+
+/*!
+ Sets the position of the hot spot relative to the top-left corner of the
+ pixmap used to the point specified by \a hotspot.
+
+ \bold{Note:} on X11, the pixmap may not be able to keep up with the mouse
+ movements if the hot spot causes the pixmap to be displayed
+ directly under the cursor.
+*/
+void QDrag::setHotSpot(const QPoint& hotspot)
+{
+ Q_D(QDrag);
+ d->hotspot = hotspot;
+}
+
+/*!
+ Returns the position of the hot spot relative to the top-left corner of the
+ cursor.
+*/
+QPoint QDrag::hotSpot() const
+{
+ Q_D(const QDrag);
+ return d->hotspot;
+}
+
+/*!
+ Returns the source of the drag object. This is the widget where the drag
+ and drop operation originated.
+*/
+QObject *QDrag::source() const
+{
+ Q_D(const QDrag);
+ return d->source;
+}
+
+/*!
+ Returns the target of the drag and drop operation. This is the widget where
+ the drag object was dropped.
+*/
+QObject *QDrag::target() const
+{
+ Q_D(const QDrag);
+ return d->target;
+}
+
+/*!
+ \since 4.3
+
+ Starts the drag and drop operation and returns a value indicating the requested
+ drop action when it is completed. The drop actions that the user can choose
+ from are specified in \a supportedActions. The default proposed action will be selected
+ among the allowed actions in the following order: Move, Copy and Link.
+
+ \bold{Note:} On Linux and Mac OS X, the drag and drop operation
+ can take some time, but this function does not block the event
+ loop. Other events are still delivered to the application while
+ the operation is performed. On Windows, the Qt event loop is
+ blocked while during the operation.
+*/
+
+Qt::DropAction QDrag::exec(Qt::DropActions supportedActions)
+{
+ return exec(supportedActions, Qt::IgnoreAction);
+}
+
+/*!
+ \since 4.3
+
+ Starts the drag and drop operation and returns a value indicating the requested
+ drop action when it is completed. The drop actions that the user can choose
+ from are specified in \a supportedActions.
+
+ The \a defaultDropAction determines which action will be proposed when the user performs a
+ drag without using modifier keys.
+
+ \bold{Note:} On Linux and Mac OS X, the drag and drop operation
+ can take some time, but this function does not block the event
+ loop. Other events are still delivered to the application while
+ the operation is performed. On Windows, the Qt event loop is
+ blocked during the operation. However, QDrag::exec() on
+ Windows causes processEvents() to be called frequently to keep the GUI responsive.
+ If any loops or operations are called while a drag operation is active, it will block the drag operation.
+*/
+
+Qt::DropAction QDrag::exec(Qt::DropActions supportedActions, Qt::DropAction defaultDropAction)
+{
+ Q_D(QDrag);
+ if (!d->data) {
+ qWarning("QDrag: No mimedata set before starting the drag");
+ return d->executed_action;
+ }
+ QDragManager *manager = QDragManager::self();
+ d->defaultDropAction = Qt::IgnoreAction;
+ d->possible_actions = supportedActions;
+
+ if (manager) {
+ if (defaultDropAction == Qt::IgnoreAction) {
+ if (supportedActions & Qt::MoveAction) {
+ d->defaultDropAction = Qt::MoveAction;
+ } else if (supportedActions & Qt::CopyAction) {
+ d->defaultDropAction = Qt::CopyAction;
+ } else if (supportedActions & Qt::LinkAction) {
+ d->defaultDropAction = Qt::LinkAction;
+ }
+ } else {
+ d->defaultDropAction = defaultDropAction;
+ }
+ d->executed_action = manager->drag(this);
+ }
+
+ return d->executed_action;
+}
+
+/*!
+ \obsolete
+
+ \bold{Note:} It is recommended to use exec() instead of this function.
+
+ Starts the drag and drop operation and returns a value indicating the requested
+ drop action when it is completed. The drop actions that the user can choose
+ from are specified in \a request. Qt::CopyAction is always allowed.
+
+ \bold{Note:} Although the drag and drop operation can take some time, this function
+ does not block the event loop. Other events are still delivered to the application
+ while the operation is performed.
+
+ \sa exec()
+*/
+Qt::DropAction QDrag::start(Qt::DropActions request)
+{
+ Q_D(QDrag);
+ if (!d->data) {
+ qWarning("QDrag: No mimedata set before starting the drag");
+ return d->executed_action;
+ }
+ QDragManager *manager = QDragManager::self();
+ d->defaultDropAction = Qt::IgnoreAction;
+ d->possible_actions = request | Qt::CopyAction;
+ if (manager)
+ d->executed_action = manager->drag(this);
+ return d->executed_action;
+}
+
+/*!
+ Sets the drag \a cursor for the \a action. This allows you
+ to override the default native cursors. To revert to using the
+ native cursor for \a action pass in a null QPixmap as \a cursor.
+
+ The \a action can only be CopyAction, MoveAction or LinkAction.
+ All other values of DropAction are ignored.
+*/
+void QDrag::setDragCursor(const QPixmap &cursor, Qt::DropAction action)
+{
+ Q_D(QDrag);
+ if (action != Qt::CopyAction && action != Qt::MoveAction && action != Qt::LinkAction)
+ return;
+ if (cursor.isNull())
+ d->customCursors.remove(action);
+ else
+ d->customCursors[action] = cursor;
+}
+
+/*!
+ \fn void QDrag::actionChanged(Qt::DropAction action)
+
+ This signal is emitted when the \a action associated with the
+ drag changes.
+
+ \sa targetChanged()
+*/
+
+/*!
+ \fn void QDrag::targetChanged(QObject *newTarget)
+
+ This signal is emitted when the target of the drag and drop
+ operation changes, with \a newTarget the new target.
+
+ \sa target(), actionChanged()
+*/
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_DRAGANDDROP
diff --git a/src/gui/kernel/qdrag.h b/src/gui/kernel/qdrag.h
new file mode 100644
index 0000000000..d014382e8c
--- /dev/null
+++ b/src/gui/kernel/qdrag.h
@@ -0,0 +1,101 @@
+/****************************************************************************
+**
+** 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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** 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, 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.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QDRAG_H
+#define QDRAG_H
+
+#include <QtCore/qobject.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Gui)
+
+#ifndef QT_NO_DRAGANDDROP
+class QMimeData;
+class QDragPrivate;
+class QPixmap;
+class QPoint;
+class QDragManager;
+
+class Q_GUI_EXPORT QDrag : public QObject
+{
+ Q_OBJECT
+ Q_DECLARE_PRIVATE(QDrag)
+public:
+ explicit QDrag(QObject *dragSource);
+ ~QDrag();
+
+ void setMimeData(QMimeData *data);
+ QMimeData *mimeData() const;
+
+ void setPixmap(const QPixmap &);
+ QPixmap pixmap() const;
+
+ void setHotSpot(const QPoint &hotspot);
+ QPoint hotSpot() const;
+
+ QObject *source() const;
+ QObject *target() const;
+
+ Qt::DropAction start(Qt::DropActions supportedActions = Qt::CopyAction);
+ Qt::DropAction exec(Qt::DropActions supportedActions = Qt::MoveAction);
+ Qt::DropAction exec(Qt::DropActions supportedActions, Qt::DropAction defaultAction);
+
+ void setDragCursor(const QPixmap &cursor, Qt::DropAction action);
+
+Q_SIGNALS:
+ void actionChanged(Qt::DropAction action);
+ void targetChanged(QObject *newTarget);
+
+private:
+ friend class QDragManager;
+ Q_DISABLE_COPY(QDrag)
+};
+
+#endif // QT_NO_DRAGANDDROP
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QDRAG_H
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-30 20:13:53 +0000