X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/8ee9d6182c9b7774477e97f4326766ac05cc70c2..7bccea09a71ae668dc07f6d7c340160c15c33fce:/include/wx/dnd.h

diff --git a/include/wx/dnd.h b/include/wx/dnd.h
index 5ba516ade5..93bc0f1e18 100644
--- a/include/wx/dnd.h
+++ b/include/wx/dnd.h
@@ -5,23 +5,39 @@
 // Modified by:
 // Created:     26.05.99
 // RCS-ID:      $Id$
-// Copyright:   (c) wxWindows Team
-// Licence:     wxWindows license
+// Copyright:   (c) wxWidgets Team
+// Licence:     wxWindows licence
 ///////////////////////////////////////////////////////////////////////////////
 
 #ifndef _WX_DND_H_BASE_
 #define _WX_DND_H_BASE_
 
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
+    #pragma interface "dndbase.h"
+#endif
+
 #include "wx/defs.h"
 
 #if wxUSE_DRAG_AND_DROP
 
 #include "wx/dataobj.h"
+#include "wx/cursor.h"
 
 // ----------------------------------------------------------------------------
 // constants
 // ----------------------------------------------------------------------------
 
+// flags for wxDropSource::DoDragDrop()
+//
+// NB: wxDrag_CopyOnly must be 0 (== FALSE) and wxDrag_AllowMove must be 1
+//     (== TRUE) for compatibility with the old DoDragDrop(bool) method!
+enum
+{
+    wxDrag_CopyOnly    = 0, // allow only copying
+    wxDrag_AllowMove   = 1, // allow moving (copying is always allowed)
+    wxDrag_DefaultMove = 3  // the default operation is move, not copy
+};
+
 // result of wxDropSource::DoDragDrop() call
 enum wxDragResult
 {
@@ -29,12 +45,13 @@ enum wxDragResult
     wxDragNone,     // drag target didn't accept the data
     wxDragCopy,     // the data was successfully copied
     wxDragMove,     // the data was successfully moved (MSW only)
+    wxDragLink,     // operation is a drag-link
     wxDragCancel    // the operation was cancelled by user (not an error)
 };
 
 inline WXDLLEXPORT bool wxIsDragResultOk(wxDragResult res)
 {
-    return res == wxDragCopy || res == wxDragMove;
+    return res == wxDragCopy || res == wxDragMove || res == wxDragLink;
 }
 
 // ----------------------------------------------------------------------------
@@ -45,7 +62,13 @@ inline WXDLLEXPORT bool wxIsDragResultOk(wxDragResult res)
 class WXDLLEXPORT wxDropSourceBase
 {
 public:
-    wxDropSourceBase() { m_data = (wxDataObject *)NULL; }
+    wxDropSourceBase(const wxCursor &cursorCopy = wxNullCursor,
+                     const wxCursor &cursorMove = wxNullCursor,
+                     const wxCursor &cursorStop = wxNullCursor)
+        : m_cursorCopy(cursorCopy),
+          m_cursorMove(cursorMove),
+          m_cursorStop(cursorStop)
+        { m_data = (wxDataObject *)NULL; }
     virtual ~wxDropSourceBase() { }
 
     // set the data which is transfered by drag and drop
@@ -55,21 +78,49 @@ public:
     wxDataObject *GetDataObject()
       { return m_data; }
 
+    // set the icon corresponding to given drag result
+    void SetCursor(wxDragResult res, const wxCursor& cursor)
+    {
+        if ( res == wxDragCopy )
+            m_cursorCopy = cursor;
+        else if ( res == wxDragMove )
+            m_cursorMove = cursor;
+        else
+            m_cursorStop = cursor;
+    }
+
     // start drag action, see enum wxDragResult for return value description
     //
-    // if bAllowMove is TRUE, data can be moved, if not - only copied
-    virtual wxDragResult DoDragDrop(bool bAllowMove = FALSE) = 0;
+    // if flags contains wxDrag_AllowMove, moving (and only copying) data is
+    // allowed, if it contains wxDrag_DefaultMove (which includes the previous
+    // flag), it is even the default operation
+    virtual wxDragResult DoDragDrop(int flags = wxDrag_CopyOnly) = 0;
 
     // override to give feedback depending on the current operation result
-    // "effect"
-    virtual bool GiveFeedback( wxDragResult WXUNUSED(effect),
-                               bool WXUNUSED(bScrolling) )
+    // "effect" and return true if you did something, false to let the library
+    // give the default feedback
+    virtual bool GiveFeedback(wxDragResult WXUNUSED(effect)) { return false; }
+
+protected:
+    const wxCursor& GetCursor(wxDragResult res) const
     {
-        return TRUE;
+        if ( res == wxDragCopy )
+            return m_cursorCopy;
+        else if ( res == wxDragMove )
+            return m_cursorMove;
+        else
+            return m_cursorStop;
     }
 
-protected:
+    // the data we're dragging
     wxDataObject *m_data;
+
+    // the cursors to use for feedback
+    wxCursor m_cursorCopy,
+             m_cursorMove,
+             m_cursorStop;
+
+    DECLARE_NO_COPY_CLASS(wxDropSourceBase)
 };
 
 // ----------------------------------------------------------------------------
@@ -90,7 +141,7 @@ public:
     // by wxDropTarget and deleted by it automatically. If you don't give it
     // here, you can use SetDataObject() later.
     wxDropTargetBase(wxDataObject *dataObject = (wxDataObject*)NULL)
-        { m_dataObject = dataObject; }
+        { m_dataObject = dataObject; m_defaultAction = wxDragNone; }
     // dtor deletes our data object
     virtual ~wxDropTargetBase()
         { delete m_dataObject; }
@@ -126,7 +177,7 @@ public:
     virtual void OnLeave() { }
 
     // this function is called when data is dropped at position (x, y) - if it
-    // returns TRUE, OnData() will be called immediately afterwards which will
+    // returns true, OnData() will be called immediately afterwards which will
     // allow to retrieve the data dropped.
     virtual bool OnDrop(wxCoord x, wxCoord y) = 0;
 
@@ -138,11 +189,26 @@ public:
     virtual wxDragResult OnData(wxCoord x, wxCoord y, wxDragResult def) = 0;
 
     // may be called *only* from inside OnData() and will fill m_dataObject
-    // with the data from the drop source if it returns TRUE
+    // with the data from the drop source if it returns true
     virtual bool GetData() = 0;
 
+    // sets the default action for drag and drop:
+    // use wxDragMove or wxDragCopy to set deafult action to move or copy
+    // and use wxDragNone (default) to set default action specified by
+    // initialization of draging (see wxDropSourceBase::DoDragDrop())
+    void SetDefaultAction(wxDragResult action)
+        { m_defaultAction = action; }
+
+    // returns default action for drag and drop or
+    // wxDragNone if this not specified
+    wxDragResult GetDefaultAction()
+        { return m_defaultAction; }
+
 protected:
     wxDataObject *m_dataObject;
+    wxDragResult m_defaultAction;
+
+    DECLARE_NO_COPY_CLASS(wxDropTargetBase)
 };
 
 // ----------------------------------------------------------------------------
@@ -154,16 +220,14 @@ protected:
     #include "wx/msw/ole/droptgt.h"
 #elif defined(__WXMOTIF__)
     #include "wx/motif/dnd.h"
+#elif defined(__WXX11__)
+    #include "wx/x11/dnd.h"
 #elif defined(__WXGTK__)
     #include "wx/gtk/dnd.h"
-#elif defined(__WXQT__)
-    #include "wx/qt/dnd.h"
 #elif defined(__WXMAC__)
     #include "wx/mac/dnd.h"
 #elif defined(__WXPM__)
     #include "wx/os2/dnd.h"
-#elif defined(__WXSTUBS__)
-    #include "wx/stubs/dnd.h"
 #endif
 
 // ----------------------------------------------------------------------------
@@ -180,6 +244,9 @@ public:
     virtual bool OnDropText(wxCoord x, wxCoord y, const wxString& text) = 0;
 
     virtual wxDragResult OnData(wxCoord x, wxCoord y, wxDragResult def);
+
+private:
+    DECLARE_NO_COPY_CLASS(wxTextDropTarget)
 };
 
 // A drop target which accepts files (dragged from File Manager or Explorer)
@@ -193,6 +260,9 @@ public:
                              const wxArrayString& filenames) = 0;
 
     virtual wxDragResult OnData(wxCoord x, wxCoord y, wxDragResult def);
+
+private:
+    DECLARE_NO_COPY_CLASS(wxFileDropTarget)
 };
 
 #endif // wxUSE_DRAG_AND_DROP