// 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
///////////////////////////////////////////////////////////////////////////////
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 bool IsSupportedFormat( wxDataFormat format ) const = 0;
virtual size_t GetDataSize() const = 0;
- // copy raw data to provided pointer
- virtual void GetDataHere(void *pBuf) const = 0;
+ virtual void GetDataHere( void *data ) const = 0;
};
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()); }
+ { return m_strText.Len() + 1; } // +1 for trailing '\0'
+
+ virtual void GetDataHere( void *data ) const
+ { memcpy(data, m_strText.c_str(), GetDataSize()); }
private:
wxString m_strText;
wxFileDataObject(void) { }
void AddFile( const wxString &file )
- { m_files += file; m_files += ";"; }
+ { m_files += file; m_files += '\0'; }
- // implement base class pure virtuals
virtual wxDataFormat GetPreferredFormat() const
{ return wxDF_FILENAME; }
- virtual bool IsSupportedFormat(wxDataFormat format) const
+
+ virtual bool IsSupportedFormat( wxDataFormat format ) const
{ return format == wxDF_FILENAME; }
+
virtual size_t GetDataSize() const
- { return m_files.Len() + 1; } // +1 for trailing '\0'of course
- virtual void GetDataHere(void *pBuf) const
- { memcpy(pBuf, m_files.c_str(), GetDataSize()); }
+ { return m_files.Len(); } // no trailing '\0'
+
+ virtual void GetDataHere( void *data ) const
+ { memcpy(data, m_files.c_str(), GetDataSize()); }
private:
wxString m_files;
virtual void OnEnter() { }
virtual void OnLeave() { }
- virtual bool OnDrop( long x, long y, const void *pData ) = 0;
+ virtual bool OnDrop( long x, long y, const void *data, size_t size ) = 0;
-// protected:
-
- friend wxWindow;
-
// Override these to indicate what kind of data you support:
virtual size_t GetFormatCount() const = 0;
virtual wxDataFormat GetFormat(size_t n) const = 0;
- void Drop( GdkEvent *event, int x, int y );
+ // implementation
+
void RegisterWidget( GtkWidget *widget );
void UnregisterWidget( GtkWidget *widget );
};
public:
wxTextDropTarget() {};
- 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 OnDropText( long x, long y, const char *psz );
protected:
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:
// 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
+ wxDragCancel // the operation was cancelled by user (not an error)
+};
class wxDropSource: public wxObject
{
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 );
+ // implementation
+
void RegisterWindow(void);
void UnregisterWindow(void);