Solved problem with wxhInstance name being mangled by MSVC; wxGetInstance is now...

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

diff --git a/include/wx/gtk1/dnd.h b/include/wx/gtk1/dnd.h
index 45bf0cf2f6c34b8331ff2998fa360321a3ec92c3..2dba9cef4928a0c45912398bf4bf913eb1d04323 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
 // 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
 ///////////////////////////////////////////////////////////////////////////////
 // Copyright:   (c) 1998 Vadim Zeitlin, Robert Roebling
 // Licence:     wxWindows license
 ///////////////////////////////////////////////////////////////////////////////


@@ -16,9 +16,15 @@
 #endif
 
 #include "wx/defs.h"
 #endif
 
 #include "wx/defs.h"

+
+#if wxUSE_DRAG_AND_DROP
+

 #include "wx/object.h"
 #include "wx/string.h"
 #include "wx/object.h"
 #include "wx/string.h"

+#include "wx/dataobj.h"

 #include "wx/cursor.h"
 #include "wx/cursor.h"

+#include "wx/icon.h"
+#include "wx/gdicmn.h"

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


@@ -28,28 +34,66 @@ class wxWindow;
 
 class wxDropTarget;
 class wxTextDropTarget;
 
 class wxDropTarget;
 class wxTextDropTarget;

-class wxDragSource;
-class wxTextDragSource;
+class wxFileDropTarget;
+class wxPrivateDropTarget;
+
+class wxDropSource;

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

-class wxDropTarget: wxObject
+class wxDropTarget: public wxObject

 {
 {

-  public:
+public:
+
+  wxDropTarget();
+  ~wxDropTarget();
+    
+  /* may be overridden to react to events */
+  virtual void OnEnter();
+  virtual void OnLeave();
+  
+  /* may be overridden to reject certain formats or drops
+     on certain areas. always returns TRUE by default
+     indicating that you'd accept the data from the drag. */
+  virtual bool OnMove( long x, long y );
+    
+  /* has to be overridden to accept a drop event. call 
+     IsSupported() to ask which formats are available
+     and then call RequestData() to indicate the format 
+     you request. */
+  virtual bool OnDrop( long x, long y );
+  
+  /* this gets called once the data has actually arrived. get
+     it with GetData(). this has to be overridden. */
+  virtual bool OnData( long x, long y );

 
 

-    wxDropTarget();
-    ~wxDropTarget();
-    virtual void OnEnter() { }
-    virtual void OnLeave() { }
-    virtual bool OnDrop( long x, long y, const void *pData ) = 0;
+  /* called from within OnDrop() to request a certain format
+     from the drop event. */
+  bool RequestData( wxDataFormat format );

 
 

-  public:
+  /* called to query what formats are available */
+  bool IsSupported( wxDataFormat format );
+  
+  /* fill data with data from the dragging source */
+  bool GetData( wxDataObject *data );

 
 

-    void Drop( GdkEvent *event, int x, int y );
-    virtual void RegisterWidget( GtkWidget *widget ) = 0;
-    void UnregisterWidget( GtkWidget *widget );
+// 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 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; }

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


@@ -58,59 +102,134 @@ class wxDropTarget: wxObject
 
 class wxTextDropTarget: public wxDropTarget
 {
 
 class wxTextDropTarget: public wxDropTarget
 {

-  public:
+public:
+
+  wxTextDropTarget() {}

 
 

-    wxTextDropTarget() {};
-    virtual bool OnDrop( long x, long y, const void *pData );
-    virtual bool OnDropText( long x, long y, const char *psz );
-    virtual void RegisterWidget( GtkWidget *widget );
+  virtual bool OnMove( long x, long y );
+  virtual bool OnDrop( long x, long y );
+  virtual bool OnData( long x, long y );
+    
+  /* you have to override OnDropData to get at the text */
+  virtual bool OnDropText( long x, long y, const wxChar *text ) = 0;
+    

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

-// wxDragSource
+// wxPrivateDropTarget

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

-class wxDragSource: public wxObject
+class wxPrivateDropTarget: public wxDropTarget

 {
 {

-  public:
+public:

 
 

-    wxDragSource( wxWindow *win );
-    ~wxDragSource(void);
-    void SetData( char *data, const long size );
-    void Start( int x, int y );
+  /* sets id to "application/myprogram" where "myprogram" is the
+     same as wxApp->GetAppName() */
+  wxPrivateDropTarget();
+  /* see SetId() below for explanation */
+  wxPrivateDropTarget( const wxString &id );
+  
+  virtual bool OnMove( long x, long y );
+  virtual bool OnDrop( long x, long y );
+  virtual bool OnData( long x, long y );
+  
+  /* you have to override OnDropData to get at the data */
+  virtual bool OnDropData( long x, long y, void *data, size_t size ) = 0;
+    
+  /* the string ID identifies the format of clipboard or DnD data. a word
+     processor would e.g. add a wxTextDataObject and a wxPrivateDataObject
+     to the clipboard - the latter with the Id "application/wxword" or
+     "image/png". */
+  void SetId( const wxString& id ) { m_id = id; }
+  wxString GetId() { return m_id; }
+      
+private:
+
+    wxString   m_id;
+};

 
 

-  public:
+//----------------------------------------------------------------------------
+// A drop target which accepts files (dragged from File Manager or Explorer)
+//----------------------------------------------------------------------------

 
 

-    void ConnectWindow(void);
-    void UnconnectWindow(void);
-    virtual void RegisterWindow(void) = 0;
-    void UnregisterWindow(void);
+class wxFileDropTarget: public wxDropTarget
+{
+public:
+    
+  wxFileDropTarget() {}
+    
+  virtual bool OnMove( long x, long y );
+  virtual bool OnDrop( long x, long y );
+  virtual bool OnData( long x, long y );

   
   

-    GtkWidget   *m_widget;
-    wxWindow    *m_window;
-    char        *m_data;
-    long         m_size;
-    wxCursor     m_defaultCursor;
-    wxCursor     m_goaheadCursor;
+  /* you have to override OnDropFiles to get at the file names */
+  virtual bool OnDropFiles( long x, long y, size_t nFiles, const wxChar * const aszFiles[] ) = 0;
+

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

-// 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 (MSW only)
+  wxDragCancel    // the operation was cancelled by user (not an error)
+};
+
+class wxDropSource: public wxObject

 {
 {

-  public:
+public:

 
 

-    wxTextDragSource( wxWindow *win ) : wxDragSource(win) {};
-    void SetTextData( const wxString &text );
-    void RegisterWindow(void);
+  /* constructor. set data later with SetData() */
+  wxDropSource( wxWindow *win, const wxIcon &go = wxNullIcon, const wxIcon &stop = wxNullIcon );
+    
+  /* constructor for setting one data object */
+  wxDropSource( wxDataObject *data, wxWindow *win, const wxIcon &go = wxNullIcon, const wxIcon &stop = wxNullIcon );

     
     

-  private:
+  /* constructor for setting several data objects via wxDataBroker */
+  wxDropSource( wxDataBroker *data, wxWindow *win );
+
+  ~wxDropSource();
+    
+  /* set several dataobjects via wxDataBroker */
+  void SetData( wxDataBroker *data );
+
+  /* set one dataobject */
+  void SetData( wxDataObject *data );
+
+  /* start drag action */
+  wxDragResult DoDragDrop( bool bAllowMove = FALSE );
+    
+  /* override to give feedback */
+  virtual bool GiveFeedback( wxDragResult WXUNUSED(effect), bool WXUNUSED(bScrolling) ) { return TRUE; }
+  
+  /* GTK implementation */
+      
+  void RegisterWindow();
+  void UnregisterWindow();

   
   

-    wxString m_tmp;
+    GtkWidget     *m_widget;
+    wxWindow      *m_window;
+    wxDragResult   m_retValue;
+    wxDataBroker  *m_data;
+    
+    wxCursor      m_defaultCursor;
+    wxCursor      m_goaheadCursor;
+    
+    wxIcon        m_goIcon;
+    wxIcon        m_stopIcon;
+    
+    bool          m_waiting;

 };
 
 };
 

+#endif
+
+   // wxUSE_DRAG_AND_DROP
+

 #endif  
        //__GTKDNDH__
 
 #endif  
        //__GTKDNDH__