drag & drop implemented

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@13276 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/mac/dnd.h

@@ -14,9 +14,13 @@
 #pragma interface "dnd.h"
 #endif
 
+#if wxUSE_DRAG_AND_DROP
+
 #include "wx/defs.h"
 #include "wx/object.h"
 #include "wx/string.h"
+#include "wx/string.h"
+#include "wx/dataobj.h"
 #include "wx/cursor.h"
 
 //-------------------------------------------------------------------------
@@ -25,212 +29,81 @@
 
 class WXDLLEXPORT wxWindow;
 
-#ifndef __DARWIN__
-class WXDLLEXPORT wxDataObject;
-class WXDLLEXPORT wxTextDataObject;
-class WXDLLEXPORT wxFileDataObject;
-#endif
-
 class WXDLLEXPORT wxDropTarget;
 class WXDLLEXPORT wxTextDropTarget;
 class WXDLLEXPORT wxFileDropTarget;
 
 class WXDLLEXPORT wxDropSource;
 
-#ifndef __DARWIN__
-//-------------------------------------------------------------------------
-// wxDataObject
-//-------------------------------------------------------------------------
-
-class WXDLLEXPORT 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
+// macros
 // ----------------------------------------------------------------------------
 
-class WXDLLEXPORT wxTextDataObject : public wxDataObject
+// this macro may be used instead for wxDropSource ctor arguments: it will use
-{
+// the icon 'name' from an XPM file under GTK, but will expand to something
-public:
+// else under MSW. If you don't use it, you will have to use #ifdef in the
-  // ctors
+// application code.
-  wxTextDataObject() { }
+#define wxDROP_ICON(name)   wxICON(name)
-  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 WXDLLEXPORT wxFileDataObject : public wxDataObject
-{
-public:
-
-  wxFileDataObject(void) { }
-  void AddFile( const wxString &file )
-    { m_files += file; m_files += ";"; }
-
-  // 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() + 1; } // +1 for trailing '\0'of course
-  virtual void GetDataHere(void *pBuf) const
-    { memcpy(pBuf, m_files.c_str(), GetDataSize()); }
-
-private:
-  wxString  m_files;
-  
-};
-#endif
 
 //-------------------------------------------------------------------------
 // wxDropTarget
 //-------------------------------------------------------------------------
 
-class WXDLLEXPORT wxDropTarget: public wxObject
+class WXDLLEXPORT wxDropTarget: public wxDropTargetBase
 {
   public:
 
-    wxDropTarget();
+    wxDropTarget(wxDataObject *dataObject = (wxDataObject*) NULL );
-    ~wxDropTarget();
-    
-    virtual void OnEnter() { }
-    virtual void OnLeave() { }
-    virtual bool OnDrop( wxCoord x, wxCoord y, const void *pData ) = 0;
 
-//  protected:
+    virtual wxDragResult OnDragOver(wxCoord x, wxCoord y, wxDragResult def);
-      
+    virtual bool OnDrop(wxCoord x, wxCoord y);
-    friend class wxWindow;
+    virtual wxDragResult OnData(wxCoord x, wxCoord y, wxDragResult def);
+    virtual bool GetData();
     
-    // Override these to indicate what kind of data you support: 
+    bool CurrentDragHasSupportedFormat() ;
-  
+    void SetCurrentDrag( DragReference drag ) { m_currentDrag = drag ; }
-    virtual size_t GetFormatCount() const = 0;
+    DragReference GetCurrentDrag() { return m_currentDrag ; }
-    virtual wxDataFormat GetFormat(size_t n) const = 0;
+  protected :
+    DragReference m_currentDrag ;
 };
 
-#ifndef __DARWIN__
-//-------------------------------------------------------------------------
-// wxTextDropTarget
-//-------------------------------------------------------------------------
-
-class WXDLLEXPORT wxTextDropTarget: public wxDropTarget
-{
-  public:
-
-    wxTextDropTarget() {};
-    virtual bool OnDrop( wxCoord x, wxCoord y, const void *pData );
-    virtual bool OnDropText( wxCoord x, wxCoord y, const char *psz );
-    
-  protected:
-  
-    virtual size_t GetFormatCount() const;
-    virtual wxDataFormat GetFormat(size_t n) const;
-};
-
-// ----------------------------------------------------------------------------
-// A drop target which accepts files (dragged from File Manager or Explorer)
-// ----------------------------------------------------------------------------
-
-class WXDLLEXPORT wxFileDropTarget: public wxDropTarget
-{
-  public:
-    
-    wxFileDropTarget() {};
-    
-    virtual bool OnDrop(wxCoord x, wxCoord y, const void *pData);
-    virtual bool OnDropFiles( wxCoord x, wxCoord y, 
-                              size_t nFiles, const char * const aszFiles[]);
-
-  protected:
-  
-    virtual size_t GetFormatCount() const;
-    virtual wxDataFormat GetFormat(size_t n) const;
-};
-#endif
-
 //-------------------------------------------------------------------------
 // wxDropSource
 //-------------------------------------------------------------------------
 
-class WXDLLEXPORT wxDropSource: public wxObject
+class WXDLLEXPORT wxDropSource: public wxDropSourceBase
 {
-  public:
+public:
+    /* constructor. set data later with SetData() */
+    wxDropSource( wxWindow *win = (wxWindow *)NULL,
+                  const wxIcon &copy = wxNullIcon,
+                  const wxIcon &move = wxNullIcon,
+                  const wxIcon &none = wxNullIcon);
 
-    wxDropSource( wxWindow *win );
+    /* constructor for setting one data object */
-    wxDropSource( wxDataObject &data, wxWindow *win );
+    wxDropSource( wxDataObject& data,
-    
+                  wxWindow *win,
-    ~wxDropSource(void);
+                  const wxIcon &copy = wxNullIcon,
-    
+                  const wxIcon &move = wxNullIcon,
-    void SetData( wxDataObject &data  );
+                  const wxIcon &none = wxNullIcon);
-    wxDragResult DoDragDrop( bool bAllowMove = FALSE );
-    
-    virtual bool GiveFeedback( wxDragResult WXUNUSED(effect), bool WXUNUSED(bScrolling) ) { return TRUE; };
 
-  protected:
+
-  
+    ~wxDropSource();
-    wxDataObject  *m_data;
+
+    /* start drag action */
+    virtual wxDragResult DoDragDrop( bool bAllowMove = FALSE );
+    
+    wxWindow*     GetWindow() { return m_window ; }
+    void SetCurrentDrag( DragReference drag ) { m_currentDrag = drag ; }
+    DragReference GetCurrentDrag() { return m_currentDrag ; }
+  protected :
+    wxWindow        *m_window;
+    DragReference m_currentDrag ;
 };
 
+#endif
+      // D&D
+
 #endif  
        //_WX_DND_H_
 

include/wx/mac/metafile.h

@@ -121,38 +121,29 @@ bool WXDLLEXPORT wxMakeMetaFilePlaceable(const wxString& filename, int x1, int y
 // ----------------------------------------------------------------------------
 
 #if wxUSE_DATAOBJ
-class WXDLLEXPORT wxMetafileDataObject : public wxDataObject
+class WXDLLEXPORT wxMetafileDataObject : public wxDataObjectSimple
 {
 public:
   // ctors
-  wxMetafileDataObject() { m_width = 0; m_height = 0; };
+  wxMetafileDataObject() 
-  wxMetafileDataObject(const wxMetafile& metafile, int width = 0, int height = 0):
+    : wxDataObjectSimple(wxDF_METAFILE) {  };
-    m_metafile(metafile), m_width(width), m_height(height) { }
+  wxMetafileDataObject(const wxMetafile& metafile)
+    : wxDataObjectSimple(wxDF_METAFILE), m_metafile(metafile) { }
 
-  void SetMetafile(const wxMetafile& metafile, int w = 0, int h = 0)
+    // virtual functions which you may override if you want to provide data on
-    { m_metafile = metafile; m_width = w; m_height = h; }
+    // demand only - otherwise, the trivial default versions will be used
-  wxMetafile GetMetafile() const { return m_metafile; }
+    virtual void SetMetafile(const wxMetafile& metafile)
-  int GetWidth() const { return m_width; }
+        { m_metafile = metafile; }
-  int GetHeight() const { return m_height; }
+    virtual wxMetafile GetMetafile() const
+        { return m_metafile; }
 
-  virtual wxDataFormat GetFormat() const { return wxDF_METAFILE; }
+    // implement base class pure virtuals
+    virtual size_t GetDataSize() const;
+    virtual bool GetDataHere(void *buf) const;
+    virtual bool SetData(size_t len, const void *buf);
 
-/* ??
+protected:
-  // implement base class pure virtuals
-  virtual wxDataFormat GetPreferredFormat() const
-    { return (wxDataFormat) wxDataObject::Text; }
-  virtual bool IsSupportedFormat(wxDataFormat format) const
-    { return format == wxDataObject::Text || format == wxDataObject::Locale; }
-  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:
   wxMetafile   m_metafile;
-  int          m_width;
-  int          m_height;
 };
 #endif
 

include/wx/mac/window.h

@@ -214,6 +214,7 @@ public:
 
 public :
 	static bool							MacGetWindowFromPoint( const wxPoint &point , wxWindowMac** outWin ) ;
+	virtual bool						MacGetWindowFromPointSub( const wxPoint &point , wxWindowMac** outWin ) ;
 	virtual	void						MacRedraw( RgnHandle updatergn , long time , bool erase) ;
 	virtual bool						MacCanFocus() const { return true ; }
 
@@ -248,7 +249,6 @@ public :
 	bool								MacIsWindowScrollbar( const wxScrollBar* sb ) { return (m_hScrollBar == sb || m_vScrollBar == sb) ; }
 	static wxWindowMac*					s_lastMouseWindow ;
 private:
-	virtual bool						MacGetWindowFromPointSub( const wxPoint &point , wxWindowMac** outWin ) ;
 protected:
 //	RgnHandle					m_macUpdateRgn ;
 //	bool						m_macEraseOnRedraw ;