// Name: dnd.h
// Purpose: declaration of the wxDropTarget class
// Author: Robert Roebling
-// RCS-ID:
+// RCS-ID: $Id$
// Copyright: (c) 1998 Vadim Zeitlin, Robert Roebling
// Licence: wxWindows license
///////////////////////////////////////////////////////////////////////////////
#endif
#include "wx/defs.h"
+
+#if wxUSE_DRAG_AND_DROP
+
#include "wx/object.h"
#include "wx/string.h"
+#include "wx/dataobj.h"
#include "wx/cursor.h"
+//-------------------------------------------------------------------------
+// conditional compilation
+//-------------------------------------------------------------------------
+
+#if (GTK_MINOR_VERSION == 1)
+#if (GTK_MICRO_VERSION >= 3)
+#define NEW_GTK_DND_CODE
+#endif
+#endif
+
//-------------------------------------------------------------------------
// classes
//-------------------------------------------------------------------------
class wxWindow;
-class wxDataObject;
-class wxTextDataObject;
-class wxFileDataObject;
-
class wxDropTarget;
class wxTextDropTarget;
class wxFileDropTarget;
+class wxPrivateDropTarget;
class wxDropSource;
-//-------------------------------------------------------------------------
-// wxDataObject
-//-------------------------------------------------------------------------
-
-class wxDataObject: public wxObject
-{
-public:
- // all data formats (values are the same as in windows.h, do not change!)
- enum StdFormat
- {
- Invalid,
- Text,
- Bitmap,
- MetafilePict,
- Sylk,
- Dif,
- Tiff,
- OemText,
- Dib,
- Palette,
- Pendata,
- Riff,
- Wave,
- UnicodeText,
- EnhMetafile,
- Hdrop,
- Locale,
- Max
- };
-
- // function to return symbolic name of clipboard format (debug messages)
- static const char *GetFormatName(wxDataFormat format);
-
- // ctor & dtor
- wxDataObject() {};
- ~wxDataObject() {};
-
- // pure virtuals to override
- // get the best suited format for our data
- virtual wxDataFormat GetPreferredFormat() const = 0;
- // decide if we support this format (should be one of values of
- // StdFormat enumerations or a user-defined format)
- virtual bool IsSupportedFormat(wxDataFormat format) const = 0;
- // get the (total) size of data
- virtual size_t GetDataSize() const = 0;
- // copy raw data to provided pointer
- virtual void GetDataHere(void *pBuf) const = 0;
-
-};
-
-// ----------------------------------------------------------------------------
-// wxTextDataObject is a specialization of wxDataObject for text data
-// ----------------------------------------------------------------------------
-
-class wxTextDataObject : public wxDataObject
-{
-public:
- // ctors
- wxTextDataObject() { }
- wxTextDataObject(const wxString& strText) : m_strText(strText) { }
- void Init(const wxString& strText) { m_strText = strText; }
-
- // implement base class pure virtuals
- virtual wxDataFormat GetPreferredFormat() const
- { return wxDF_TEXT; }
- virtual bool IsSupportedFormat(wxDataFormat format) const
- { return format == wxDF_TEXT; }
- virtual size_t GetDataSize() const
- { return m_strText.Len() + 1; } // +1 for trailing '\0'of course
- virtual void GetDataHere(void *pBuf) const
- { memcpy(pBuf, m_strText.c_str(), GetDataSize()); }
-
-private:
- wxString m_strText;
-
-};
-
-// ----------------------------------------------------------------------------
-// wxFileDataObject is a specialization of wxDataObject for file names
-// ----------------------------------------------------------------------------
-
-class wxFileDataObject : public wxDataObject
-{
-public:
-
- wxFileDataObject(void) { }
- void AddFile( const wxString &file )
- { m_files += file; m_files += '\0'; }
-
- // implement base class pure virtuals
- virtual wxDataFormat GetPreferredFormat() const
- { return wxDF_FILENAME; }
- virtual bool IsSupportedFormat(wxDataFormat format) const
- { return format == wxDF_FILENAME; }
- virtual size_t GetDataSize() const
- { return m_files.Len(); } // no trailing '\0'
- virtual void GetDataHere(void *pBuf) const
- { memcpy(pBuf, m_files.c_str(), GetDataSize()); }
-
-private:
- wxString m_files;
-
-};
//-------------------------------------------------------------------------
// wxDropTarget
//-------------------------------------------------------------------------
virtual void OnEnter() { }
virtual void OnLeave() { }
- virtual bool OnDrop( long x, long y, const void *pData ) = 0;
+ virtual void OnMouseMove( long WXUNUSED(x), long WXUNUSED(y) ) { }
+ virtual bool OnDrop( long x, long y, const void *data, size_t size ) = 0;
- // implementation
-
- int m_size;
-
// Override these to indicate what kind of data you support:
virtual size_t GetFormatCount() const = 0;
- virtual wxDataFormat GetFormat(size_t n) const = 0;
+ virtual wxDataFormat &GetFormat(size_t n) const;
+
+ // implementation
- void Drop( GdkEventDropDataAvailable *event, int x, int y );
void RegisterWidget( GtkWidget *widget );
void UnregisterWidget( GtkWidget *widget );
+
+ wxDataFormat *m_format;
};
//-------------------------------------------------------------------------
{
public:
- wxTextDropTarget() {};
- virtual bool OnDrop( long x, long y, const void *pData );
+ wxTextDropTarget();
+ virtual bool OnDrop( long x, long y, const void *data, size_t size );
virtual bool OnDropText( long x, long y, const char *psz );
protected:
virtual size_t GetFormatCount() const;
- virtual wxDataFormat GetFormat(size_t n) const;
};
-// ----------------------------------------------------------------------------
+//-------------------------------------------------------------------------
+// wxPrivateDropTarget
+//-------------------------------------------------------------------------
+
+class wxPrivateDropTarget: public wxDropTarget
+{
+public:
+
+ wxPrivateDropTarget();
+
+ // you have to override OnDrop to get at the data
+
+ // the string ID identifies the format of clipboard or DnD data. a word
+ // processor would e.g. add a wxTextDataObject and a wxPrivateDataObject
+ // to the clipboard - the latter with the Id "application/wxword" or
+ // "image/png".
+
+ void SetId( const wxString& id );
+
+ wxString GetId()
+ { return m_id; }
+
+private:
+
+ virtual size_t GetFormatCount() const;
+
+ wxString m_id;
+};
+
+//----------------------------------------------------------------------------
// A drop target which accepts files (dragged from File Manager or Explorer)
-// ----------------------------------------------------------------------------
+//----------------------------------------------------------------------------
class wxFileDropTarget: public wxDropTarget
{
public:
- wxFileDropTarget() {};
+ wxFileDropTarget();
- virtual bool OnDrop(long x, long y, const void *pData);
+ virtual bool OnDrop( long x, long y, const void *data, size_t size );
virtual bool OnDropFiles( long x, long y,
- size_t nFiles, const char * const aszFiles[]);
+ size_t nFiles, const char * const aszFiles[] );
protected:
virtual size_t GetFormatCount() const;
- virtual wxDataFormat GetFormat(size_t n) const;
};
//-------------------------------------------------------------------------
// wxDropSource
//-------------------------------------------------------------------------
- enum wxDragResult
- {
- wxDragError, // error prevented the d&d operation from completing
- wxDragNone, // drag target didn't accept the data
- wxDragCopy, // the data was successfully copied
- wxDragMove, // the data was successfully moved
- wxDragCancel // the operation was cancelled by user (not an error)
- };
+enum wxDragResult
+{
+ wxDragError, // error prevented the d&d operation from completing
+ wxDragNone, // drag target didn't accept the data
+ wxDragCopy, // the data was successfully copied
+ wxDragMove, // the data was successfully moved (MSW only)
+ wxDragCancel // the operation was cancelled by user (not an error)
+};
class wxDropSource: public wxObject
{
public:
+ /* constructor. set data later with SetData() */
wxDropSource( wxWindow *win );
- wxDropSource( wxDataObject &data, wxWindow *win );
+
+ /* constructor for setting one data object */
+ wxDropSource( wxDataObject *data, wxWindow *win );
+
+ /* constructor for setting several data objects via wxDataBroker */
+ wxDropSource( wxDataBroker *data, wxWindow *win );
~wxDropSource(void);
- void SetData( wxDataObject &data );
+ /* set one dataobject */
+ void SetData( wxDataBroker *data );
+
+ /* set severa dataobjects via wxDataBroker */
+ void SetData( wxDataObject *data );
+
+ /* start drag action */
wxDragResult DoDragDrop( bool bAllowMove = FALSE );
- virtual bool GiveFeedback( wxDragResult WXUNUSED(effect), bool WXUNUSED(bScrolling) ) { return TRUE; };
-
- protected:
-
- friend void gtk_drag_callback( GtkWidget *widget, GdkEvent *event, wxDropSource *source );
+ /* override to give feedback */
+ virtual bool GiveFeedback( wxDragResult WXUNUSED(effect), bool WXUNUSED(bScrolling) ) { return TRUE; }
+ /* GTK implementation */
+
void RegisterWindow(void);
void UnregisterWindow(void);
GtkWidget *m_widget;
wxWindow *m_window;
wxDragResult m_retValue;
- wxDataObject *m_data;
+ wxDataBroker *m_data;
wxCursor m_defaultCursor;
wxCursor m_goaheadCursor;
};
+#endif
+
+ // wxUSE_DRAG_AND_DROP
+
#endif
//__GTKDNDH__
projects / wxWidgets.git / blobdiff