Prevent unnecessary assert when someone tries to

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

diff --git a/include/wx/gtk/dnd.h b/include/wx/gtk/dnd.h
index ba56769328e0b20203e48f87839888bc479c4395..c2210c23a34f55f3408f3aaca4b1a8fd3970d16d 100644 (file)
--- a/include/wx/gtk/dnd.h
+++ b/include/wx/gtk/dnd.h
@@ -4,35 +4,25 @@
 // Author:      Robert Roebling
 // RCS-ID:      $Id$
 // Copyright:   (c) 1998 Vadim Zeitlin, Robert Roebling
 // Author:      Robert Roebling
 // RCS-ID:      $Id$
 // Copyright:   (c) 1998 Vadim Zeitlin, Robert Roebling

-// Licence:     wxWindows license
+// Licence:     wxWindows licence

 ///////////////////////////////////////////////////////////////////////////////
 
 
 #ifndef __GTKDNDH__
 #define __GTKDNDH__
 
 ///////////////////////////////////////////////////////////////////////////////
 
 
 #ifndef __GTKDNDH__
 #define __GTKDNDH__
 

-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)

 #pragma interface
 #endif
 
 #pragma interface
 #endif
 

-#include "wx/defs.h"
-
-#ifdef wxUSE_DRAG_AND_DROP
+#if wxUSE_DRAG_AND_DROP

 
 #include "wx/object.h"
 #include "wx/string.h"
 #include "wx/dataobj.h"
 #include "wx/cursor.h"
 
 #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
+#include "wx/icon.h"
+#include "wx/gdicmn.h"

 
 //-------------------------------------------------------------------------
 // classes
 
 //-------------------------------------------------------------------------
 // classes


@@ -46,115 +36,100 @@ class wxFileDropTarget;
 
 class wxDropSource;
 
 
 class wxDropSource;
 

+// ----------------------------------------------------------------------------
+// macros
+// ----------------------------------------------------------------------------
+
+// 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
+// else under MSW. If you don't use it, you will have to use #ifdef in the
+// application code.
+#define wxDROP_ICON(name)   wxICON(name)
+

 //-------------------------------------------------------------------------
 // wxDropTarget
 //-------------------------------------------------------------------------
 
 //-------------------------------------------------------------------------
 // wxDropTarget
 //-------------------------------------------------------------------------
 

-class wxDropTarget: public wxObject
+class wxDropTarget: public wxDropTargetBase

 {
 {

-  public:
-
-    wxDropTarget();
-    ~wxDropTarget();
-    
-    virtual void OnEnter() { }
-    virtual void OnLeave() { }
-    virtual bool OnDrop( long x, long y, const void *data, size_t size ) = 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;
-  
+public:
+    wxDropTarget(wxDataObject *dataObject = (wxDataObject*) NULL );
+
+    virtual wxDragResult OnDragOver(wxCoord x, wxCoord y, wxDragResult def);
+    virtual bool OnDrop(wxCoord x, wxCoord y);
+    virtual wxDragResult OnData(wxCoord x, wxCoord y, wxDragResult def);
+    virtual bool GetData();
+

   // implementation
   // implementation

-  
-    void RegisterWidget( GtkWidget *widget );
-    void UnregisterWidget( GtkWidget *widget );
-};

 
 

-//-------------------------------------------------------------------------
-// wxTextDropTarget
-//-------------------------------------------------------------------------
+    GdkAtom GetMatchingPair();

 
 

-class wxTextDropTarget: public wxDropTarget
-{
-  public:
-
-    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;
-};
+    void RegisterWidget( GtkWidget *widget );
+    void UnregisterWidget( GtkWidget *widget );

 
 

-// ----------------------------------------------------------------------------
-// A drop target which accepts files (dragged from File Manager or Explorer)
-// ----------------------------------------------------------------------------
+    GdkDragContext     *m_dragContext;
+    GtkWidget          *m_dragWidget;
+    GtkSelectionData   *m_dragData;
+    guint               m_dragTime;
+    bool                m_firstMotion;     // gdk has no "gdk_drag_enter" event

 
 

-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[] );
-
-  protected:
-  
-    virtual size_t GetFormatCount() const;
-    virtual wxDataFormat GetFormat(size_t n) const;
+    void SetDragContext( GdkDragContext *dc ) { m_dragContext = dc; }
+    void SetDragWidget( GtkWidget *w ) { m_dragWidget = w; }
+    void SetDragData( GtkSelectionData *sd ) { m_dragData = sd; }
+    void SetDragTime( guint time ) { m_dragTime = time; }

 };
 
 //-------------------------------------------------------------------------
 // wxDropSource
 //-------------------------------------------------------------------------
 
 };
 
 //-------------------------------------------------------------------------
 // wxDropSource
 //-------------------------------------------------------------------------
 

-enum wxDragResult
+class wxDropSource: public wxDropSourceBase

 {
 {

-  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)
+public:
+    // constructor. set data later with SetData()
+    wxDropSource( wxWindow *win = (wxWindow *)NULL,
+                  const wxIcon &copy = wxNullIcon,
+                  const wxIcon &move = wxNullIcon,
+                  const wxIcon &none = wxNullIcon);
+
+    // constructor for setting one data object
+    wxDropSource( wxDataObject& data,
+                  wxWindow *win,
+                  const wxIcon &copy = wxNullIcon,
+                  const wxIcon &move = wxNullIcon,
+                  const wxIcon &none = wxNullIcon);
+
+    virtual ~wxDropSource();
+
+    // start drag action
+    virtual wxDragResult DoDragDrop(int flags = wxDrag_CopyOnly);
+
+    // GTK implementation
+    void RegisterWindow();
+    void UnregisterWindow();
+
+    void PrepareIcon( int action, GdkDragContext *context );
+
+    GtkWidget       *m_widget;
+    GtkWidget       *m_iconWindow;
+    GdkDragContext  *m_dragContext;
+    wxWindow        *m_window;
+
+    wxDragResult     m_retValue;
+    wxIcon           m_iconCopy,
+                     m_iconMove,
+                     m_iconNone;
+
+    bool             m_waiting;
+
+private:
+    // common part of both ctors
+    void SetIcons(const wxIcon& copy,
+                  const wxIcon& move,
+                  const wxIcon& none);

 };
 
 };
 

-class wxDropSource: public wxObject
-{
-  public:
-
-    wxDropSource( wxWindow *win );
-    wxDropSource( wxDataObject &data, wxWindow *win );
-    
-    ~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);
-  
-    GtkWidget     *m_widget;
-    wxWindow      *m_window;
-    wxDragResult   m_retValue;
-    wxDataObject  *m_data;
-    
-    wxCursor      m_defaultCursor;
-    wxCursor      m_goaheadCursor;
-};
-
-#endif
-
-   // wxUSE_DRAG_AND_DROP
+#endif // wxUSE_DRAG_AND_DROP

 
 

-#endif  
-       //__GTKDNDH__
+#endif //__GTKDNDH__