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39 
40 #ifndef QDND_P_H
41 #define QDND_P_H
42 
43 //
44 //  W A R N I N G
45 //  -------------
46 //
47 // This file is not part of the Qt API.  It exists for the convenience
48 // of other Qt classes.  This header file may change from version to
49 // version without notice, or even be removed.
50 //
51 // We mean it.
52 //
53 
54 #include <QtGui/private/qtguiglobal_p.h>
55 #include "QtCore/qobject.h"
56 #include "QtCore/qmap.h"
57 #include "QtCore/qmimedata.h"
58 #include "QtGui/qdrag.h"
59 #include "QtGui/qpixmap.h"
60 #include "QtGui/qcursor.h"
61 #include "QtGui/qwindow.h"
62 #include "QtCore/qpoint.h"
63 #include "private/qobject_p.h"
64 #include "QtGui/qbackingstore.h"
65 
66 QT_REQUIRE_CONFIG(draganddrop);
67 
68 QT_BEGIN_NAMESPACE
69 
70 class QPlatformDrag;
71 
72 class QDragPrivate : public QObjectPrivate
73 {
74 public:
QDragPrivate()75     QDragPrivate()
76         : source(nullptr)
77         , target(nullptr)
78         , data(nullptr)
79     { }
80     QObject *source;
81     QObject *target;
82     QMimeData *data;
83     QPixmap pixmap;
84     QPoint hotspot;
85     Qt::DropAction executed_action;
86     Qt::DropActions supported_actions;
87     Qt::DropAction default_action;
88     QMap<Qt::DropAction, QPixmap> customCursors;
89 };
90 
91 class Q_GUI_EXPORT QDragManager : public QObject {
92     Q_OBJECT
93 
94 public:
95     QDragManager();
96     ~QDragManager();
97     static QDragManager *self();
98 
99     Qt::DropAction drag(QDrag *);
100 
101     void setCurrentTarget(QObject *target, bool dropped = false);
102     QObject *currentTarget() const;
103 
object()104     QPointer<QDrag> object() const { return m_object; }
105     QObject *source() const;
106 
107 private:
108     QObject *m_currentDropTarget;
109     QPlatformDrag *m_platformDrag;
110     QPointer<QDrag> m_object;
111 
112     static QDragManager *m_instance;
113     Q_DISABLE_COPY_MOVE(QDragManager)
114 };
115 
116 QT_END_NAMESPACE
117 
118 #endif // QDND_P_H
119