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[wxWidgets.git] / include / wx / gtk1 / dnd.h

diff --git a/include/wx/gtk1/dnd.h b/include/wx/gtk1/dnd.h
index 45bf0cf2f6c34b8331ff2998fa360321a3ec92c3..bd392388ce4cd80965e5955d0884d55ddf6015ba 100644 (file)
--- a/include/wx/gtk1/dnd.h
+++ b/include/wx/gtk1/dnd.h
@@ -2,7 +2,7 @@
 // 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
 ///////////////////////////////////////////////////////////////////////////////
@@ -16,10 +16,24 @@
 #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
 //-------------------------------------------------------------------------
@@ -28,27 +42,33 @@ class wxWindow;
 
 class wxDropTarget;
 class wxTextDropTarget;
-class wxDragSource;
-class wxTextDragSource;
+class wxFileDropTarget;
+
+class wxDropSource;
 
 //-------------------------------------------------------------------------
 // wxDropTarget
 //-------------------------------------------------------------------------
 
-class wxDropTarget: wxObject
+class wxDropTarget: public wxObject
 {
   public:
 
     wxDropTarget();
     ~wxDropTarget();
+    
     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;
 
-  public:
-
-    void Drop( GdkEvent *event, int x, int y );
-    virtual void RegisterWidget( GtkWidget *widget ) = 0;
+    // Override these to indicate what kind of data you support: 
+  
+    virtual size_t GetFormatCount() const = 0;
+    virtual wxDataFormat GetFormat(size_t n) const = 0;
+  
+  // implementation
+  
+    void RegisterWidget( GtkWidget *widget );
     void UnregisterWidget( GtkWidget *widget );
 };
 
@@ -61,56 +81,80 @@ class wxTextDropTarget: public wxDropTarget
   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 );
-    virtual void RegisterWidget( GtkWidget *widget );
+    
+  protected:
+  
+    virtual size_t GetFormatCount() const;
+    virtual wxDataFormat GetFormat(size_t n) const;
 };
 
-//-------------------------------------------------------------------------
-// wxDragSource
-//-------------------------------------------------------------------------
+// ----------------------------------------------------------------------------
+// A drop target which accepts files (dragged from File Manager or Explorer)
+// ----------------------------------------------------------------------------
 
-class wxDragSource: public wxObject
+class wxFileDropTarget: public wxDropTarget
 {
   public:
+    
+    wxFileDropTarget() {};
+    
+    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[] );
 
-    wxDragSource( wxWindow *win );
-    ~wxDragSource(void);
-    void SetData( char *data, const long size );
-    void Start( int x, int y );
-
-  public:
-
-    void ConnectWindow(void);
-    void UnconnectWindow(void);
-    virtual void RegisterWindow(void) = 0;
-    void UnregisterWindow(void);
+  protected:
   
-    GtkWidget   *m_widget;
-    wxWindow    *m_window;
-    char        *m_data;
-    long         m_size;
-    wxCursor     m_defaultCursor;
-    wxCursor     m_goaheadCursor;
+    virtual size_t GetFormatCount() const;
+    virtual wxDataFormat GetFormat(size_t n) const;
 };
 
 //-------------------------------------------------------------------------
-// wxTextDragSource
+// wxDropSource
 //-------------------------------------------------------------------------
 
-class wxTextDragSource: public wxDragSource
+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
 {
   public:
 
-    wxTextDragSource( wxWindow *win ) : wxDragSource(win) {};
-    void SetTextData( const wxString &text );
-    void RegisterWindow(void);
+    wxDropSource( wxWindow *win );
+    wxDropSource( wxDataObject &data, wxWindow *win );
     
-  private:
+    ~wxDropSource(void);
+    
+    void SetData( wxDataObject &data  );
+    wxDragResult DoDragDrop( bool bAllowMove = FALSE );
+    
+    virtual bool GiveFeedback( wxDragResult WXUNUSED(effect), bool WXUNUSED(bScrolling) ) { return TRUE; };
+  
+  // implementation
+      
+    void RegisterWindow(void);
+    void UnregisterWindow(void);
   
-    wxString m_tmp;
+    GtkWidget     *m_widget;
+    wxWindow      *m_window;
+    wxDragResult   m_retValue;
+    wxDataObject  *m_data;
+    
+    wxCursor      m_defaultCursor;
+    wxCursor      m_goaheadCursor;
 };
 
+#endif
+
+   // wxUSE_DRAG_AND_DROP
+
 #endif  
        //__GTKDNDH__