Long live Qt 4.5!

1 files changed, 333 insertions, 0 deletions

diff --git a/src/gui/kernel/qdnd_p.h b/src/gui/kernel/qdnd_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@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 "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 <windows.h>
+# include <objidl.h>
+#endif
+
+QT_BEGIN_NAMESPACE
+
+class QEventLoop;
+
+#if !(defined(QT_NO_DRAGANDDROP) && defined(QT_NO_CLIPBOARD))
+
+class 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 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;
+#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:
+    QPixmap *pm_cursor;
+    int n_cursor;
+#ifdef Q_WS_QWS
+    Qt::DropAction currentActionForOverrideCursor;
+#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