remove unused variables, minor cleanup

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

diff --git a/include/wx/gtk/dnd.h b/include/wx/gtk/dnd.h
index ba56769328e0b20203e48f87839888bc479c4395..30e356ee61898f3a7fc84161f0601bcb27709dfb 100644 (file)
--- a/include/wx/gtk/dnd.h
+++ b/include/wx/gtk/dnd.h
@@ -4,157 +4,111 @@
 // 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 _WX_GTK_DND_H_
+#define _WX_GTK_DND_H_

 
 

-#ifndef __GTKDNDH__
-#define __GTKDNDH__
+#include "wx/icon.h"

 
 

-#ifdef __GNUG__
-#pragma interface
-#endif
-
-#include "wx/defs.h"
-
-#ifdef wxUSE_DRAG_AND_DROP
+// ----------------------------------------------------------------------------
+// macros
+// ----------------------------------------------------------------------------

 
 

-#include "wx/object.h"
-#include "wx/string.h"
-#include "wx/dataobj.h"
-#include "wx/cursor.h"
+// 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)

 
 //-------------------------------------------------------------------------
 
 //-------------------------------------------------------------------------

-// conditional compilation
+// wxDropTarget

 //-------------------------------------------------------------------------
 
 //-------------------------------------------------------------------------
 

-#if (GTK_MINOR_VERSION == 1)
-#if (GTK_MICRO_VERSION >= 3)
-#define NEW_GTK_DND_CODE
-#endif
-#endif
+class WXDLLIMPEXP_CORE wxDropTarget: public wxDropTargetBase
+{
+public:
+    wxDropTarget(wxDataObject *dataObject = NULL );

 
 

-//-------------------------------------------------------------------------
-// classes
-//-------------------------------------------------------------------------
+    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();

 
 

-class wxWindow;
+    // Can only be called during OnXXX methods.
+    wxDataFormat GetMatchingPair();

 
 

-class wxDropTarget;
-class wxTextDropTarget;
-class wxFileDropTarget;
+    // implementation

 
 

-class wxDropSource;
+    GdkAtom GTKGetMatchingPair(bool quiet = false);
+    wxDragResult GTKFigureOutSuggestedAction();

 
 

-//-------------------------------------------------------------------------
-// wxDropTarget
-//-------------------------------------------------------------------------
+    void GtkRegisterWidget( GtkWidget *widget );
+    void GtkUnregisterWidget( GtkWidget *widget );

 
 

-class wxDropTarget: public wxObject
-{
-  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;
-  
-  // implementation
-  
-    void RegisterWidget( GtkWidget *widget );
-    void UnregisterWidget( GtkWidget *widget );
+    GdkDragContext     *m_dragContext;
+    GtkWidget          *m_dragWidget;
+    GtkSelectionData   *m_dragData;
+    guint               m_dragTime;
+    bool                m_firstMotion;     // gdk has no "gdk_drag_enter" event
+
+    void GTKSetDragContext( GdkDragContext *dc ) { m_dragContext = dc; }
+    void GTKSetDragWidget( GtkWidget *w ) { m_dragWidget = w; }
+    void GTKSetDragData( GtkSelectionData *sd ) { m_dragData = sd; }
+    void GTKSetDragTime( guint time ) { m_dragTime = time; }

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

-// wxTextDropTarget
+// wxDropSource

 //-------------------------------------------------------------------------
 
 //-------------------------------------------------------------------------
 

-class wxTextDropTarget: public wxDropTarget
+class WXDLLIMPEXP_CORE wxDropSource: public wxDropSourceBase

 {
 {

-  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;
-};
+public:
+    // constructor. set data later with SetData()
+    wxDropSource( wxWindow *win = NULL,
+                  const wxIcon &copy = wxNullIcon,
+                  const wxIcon &move = wxNullIcon,
+                  const wxIcon &none = wxNullIcon);

 
 

-// ----------------------------------------------------------------------------
-// A drop target which accepts files (dragged from File Manager or Explorer)
-// ----------------------------------------------------------------------------
+    // constructor for setting one data object
+    wxDropSource( wxDataObject& data,
+                  wxWindow *win,
+                  const wxIcon &copy = wxNullIcon,
+                  const wxIcon &move = wxNullIcon,
+                  const wxIcon &none = wxNullIcon);

 
 

-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;
-};
+    virtual ~wxDropSource();

 
 

-//-------------------------------------------------------------------------
-// wxDropSource
-//-------------------------------------------------------------------------
+    // start drag action
+    virtual wxDragResult DoDragDrop(int flags = wxDrag_CopyOnly);

 
 

-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)
-};
+    void PrepareIcon( int action, GdkDragContext *context );

 
 

-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;
-};
+    GtkWidget       *m_widget;
+    GtkWidget       *m_iconWindow;
+    GdkDragContext  *m_dragContext;
+    wxWindow        *m_window;
+
+    wxDragResult     m_retValue;
+    wxIcon           m_iconCopy,
+                     m_iconMove,
+                     m_iconNone;

 
 

-#endif
+    bool             m_waiting;

 
 

-   // wxUSE_DRAG_AND_DROP
+private:
+    // common part of both ctors
+    void SetIcons(const wxIcon& copy,
+                  const wxIcon& move,
+                  const wxIcon& none);
+
+    // GTK implementation
+    void GTKConnectDragSignals();
+    void GTKDisconnectDragSignals();
+
+};

 
 

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