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+/****************************************************************************
+**
+** 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:
+ QWidget *source;
+ QWidget *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 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;
+#ifdef Q_WS_MAC
+ friend class QWidgetPrivate; //dnd is implemented here
+#endif
+
+ 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();
+ QWidget *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(QWidget *target, bool dropped = false);
+ QWidget *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
+ QWidget *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
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