wxPython/src/_dnd.i

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        _dnd.i
   3 // Purpose:     SWIG definitions for the Drag-n-drop classes
   4 //
   5 // Author:      Robin Dunn
   6 //
   7 // Created:     31-October-1999
   8 // RCS-ID:      $Id$
   9 // Copyright:   (c) 2003 by Total Control Software
  10 // Licence:     wxWindows license
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13 // Not a %module
  14
  15
  16 //---------------------------------------------------------------------------
  17 #ifndef __WXX11__
  18
  19 %newgroup
  20
  21 // flags for wxDropSource::DoDragDrop()
  22 //
  23 // NB: wxDrag_CopyOnly must be 0 (== False) and wxDrag_AllowMove must be 1
  24 //     (== True) for compatibility with the old DoDragDrop(bool) method!
  25 enum
  26 {
  27     wxDrag_CopyOnly    = 0, // allow only copying
  28     wxDrag_AllowMove   = 1, // allow moving (copying is always allowed)
  29     wxDrag_DefaultMove = 3  // the default operation is move, not copy
  30 };
  31
  32 // result of wxDropSource::DoDragDrop() call
  33 enum wxDragResult
  34 {
  35     wxDragError,    // error prevented the d&d operation from completing
  36     wxDragNone,     // drag target didn't accept the data
  37     wxDragCopy,     // the data was successfully copied
  38     wxDragMove,     // the data was successfully moved (MSW only)
  39     wxDragLink,     // operation is a drag-link
  40     wxDragCancel    // the operation was cancelled by user (not an error)
  41 };
  42
  43 bool wxIsDragResultOk(wxDragResult res);
  44
  45 //---------------------------------------------------------------------------
  46
  47
  48 // wxDropSource is the object you need to create (and call DoDragDrop on it)
  49 // to initiate a drag-and-drop operation
  50
  51
  52
  53 %{
  54 IMP_PYCALLBACK_BOOL_DR(wxPyDropSource, wxDropSource, GiveFeedback);
  55 %}
  56
  57
  58 %rename(DropSource) wxPyDropSource;
  59 class wxPyDropSource {
  60 public:
  61     %pythonAppend wxPyDropSource "self._setCallbackInfo(self, DropSource, 0)"
  62 #ifndef __WXGTK__
  63      wxPyDropSource(wxWindow *win,
  64                     const wxCursor &copy = wxNullCursor,
  65                     const wxCursor &move = wxNullCursor,
  66                     const wxCursor &none = wxNullCursor);
  67 #else
  68     wxPyDropSource(wxWindow *win,
  69                    const wxIcon& copy = wxNullIcon,
  70                    const wxIcon& move = wxNullIcon,
  71                    const wxIcon& none = wxNullIcon);
  72 #endif
  73
  74     void _setCallbackInfo(PyObject* self, PyObject* _class, int incref);
  75     ~wxPyDropSource();
  76
  77     // set the data which is transfered by drag and drop
  78     void SetData(wxDataObject& data);
  79
  80     wxDataObject *GetDataObject();
  81
  82     // set the icon corresponding to given drag result
  83     void SetCursor(wxDragResult res, const wxCursor& cursor);
  84
  85     wxDragResult DoDragDrop(int flags = wxDrag_CopyOnly);
  86
  87     bool GiveFeedback(wxDragResult effect);
  88     %MAKE_BASE_FUNC(DropSource, GiveFeedback);
  89
  90     %property(DataObject, GetDataObject, SetData, doc="See `GetDataObject` and `SetData`");
  91 };
  92
  93
  94 %pythoncode {
  95 def DROP_ICON(filename):
  96     """
  97     Returns either a `wx.Cursor` or `wx.Icon` created from the image file
  98     ``filename``.  This function is useful with the `wx.DropSource` class
  99     which, depending on platform accepts either a icon or a cursor.
 100     """
 101     img = wx.Image(filename)
 102     if wx.Platform == '__WXGTK__':
 103         return wx.IconFromBitmap(wx.BitmapFromImage(img))
 104     else:
 105         return wx.CursorFromImage(img)
 106 }
 107
 108
 109 //---------------------------------------------------------------------------
 110
 111 // wxDropTarget should be associated with a window if it wants to be able to
 112 // receive data via drag and drop.
 113 //
 114 // To use this class, you should derive from wxDropTarget and implement
 115 // OnData() pure virtual method. You may also wish to override OnDrop() if you
 116 // want to accept the data only inside some region of the window (this may
 117 // avoid having to copy the data to this application which happens only when
 118 // OnData() is called)
 119
 120
 121 // Just a place holder for the type system.  The real base class for
 122 // wxPython is wxPyDropTarget
 123 // class wxDropTarget {
 124 // public:
 125 // };
 126
 127
 128 %{
 129 IMP_PYCALLBACK__(wxPyDropTarget, wxDropTarget, OnLeave);
 130 IMP_PYCALLBACK_DR_2WXCDR(wxPyDropTarget, wxDropTarget, OnEnter);
 131 IMP_PYCALLBACK_DR_2WXCDR(wxPyDropTarget, wxDropTarget, OnDragOver);
 132 IMP_PYCALLBACK_DR_2WXCDR_pure(wxPyDropTarget, wxDropTarget, OnData);
 133 IMP_PYCALLBACK_BOOL_INTINT(wxPyDropTarget, wxDropTarget, OnDrop);
 134 %}
 135
 136
 137 %rename(DropTarget) wxPyDropTarget;
 138 class wxPyDropTarget // : public wxDropTarget
 139 {
 140 public:
 141     %pythonAppend wxPyDropTarget
 142        "self._setCallbackInfo(self, DropTarget)"
 143
 144     %disownarg( wxDataObject *dataObject );
 145
 146     wxPyDropTarget(wxDataObject *dataObject = NULL);
 147     void _setCallbackInfo(PyObject* self, PyObject* _class);
 148
 149     ~wxPyDropTarget();
 150
 151     // get/set the associated wxDataObject
 152     wxDataObject *GetDataObject();
 153     void SetDataObject(wxDataObject *dataObject);
 154
 155     %cleardisown( wxDataObject *dataObject );
 156
 157     wxDragResult OnEnter(wxCoord x, wxCoord y, wxDragResult def);
 158     wxDragResult OnDragOver(wxCoord x, wxCoord y, wxDragResult def);
 159     void OnLeave();
 160     bool OnDrop(wxCoord x, wxCoord y);
 161
 162     %MAKE_BASE_FUNC(DropTarget, OnEnter);
 163     %MAKE_BASE_FUNC(DropTarget, OnDragOver);
 164     %MAKE_BASE_FUNC(DropTarget, OnLeave);
 165     %MAKE_BASE_FUNC(DropTarget, OnDrop);
 166
 167
 168     // may be called *only* from inside OnData() and will fill m_dataObject
 169     // with the data from the drop source if it returns True
 170     bool GetData();
 171
 172     // sets the default action for drag and drop:
 173     // use wxDragMove or wxDragCopy to set deafult action to move or copy
 174     // and use wxDragNone (default) to set default action specified by
 175     // initialization of draging (see wxDropSourceBase::DoDragDrop())
 176     void SetDefaultAction(wxDragResult action);
 177
 178     // returns default action for drag and drop or
 179     // wxDragNone if this not specified
 180     wxDragResult GetDefaultAction();
 181
 182     %property(Data, GetData, doc="See `GetData`");
 183     %property(DataObject, GetDataObject, SetDataObject, doc="See `GetDataObject` and `SetDataObject`");
 184     %property(DefaultAction, GetDefaultAction, SetDefaultAction, doc="See `GetDefaultAction` and `SetDefaultAction`");
 185 };
 186
 187
 188 %pythoncode { PyDropTarget = DropTarget }
 189
 190 //---------------------------------------------------------------------------
 191
 192 // A simple wxDropTarget derived class for text data: you only need to
 193 // override OnDropText() to get something working
 194
 195
 196 %{
 197 class wxPyTextDropTarget : public wxTextDropTarget {
 198 public:
 199     wxPyTextDropTarget() {}
 200
 201     DEC_PYCALLBACK_BOOL_INTINTSTR_pure(OnDropText);
 202
 203     DEC_PYCALLBACK__(OnLeave);
 204     DEC_PYCALLBACK_DR_2WXCDR(OnEnter);
 205     DEC_PYCALLBACK_DR_2WXCDR(OnDragOver);
 206     DEC_PYCALLBACK_DR_2WXCDR(OnData);
 207     DEC_PYCALLBACK_BOOL_INTINT(OnDrop);
 208
 209     PYPRIVATE;
 210 };
 211
 212 IMP_PYCALLBACK_BOOL_INTINTSTR_pure(wxPyTextDropTarget, wxTextDropTarget, OnDropText);
 213 IMP_PYCALLBACK__(wxPyTextDropTarget, wxTextDropTarget, OnLeave);
 214 IMP_PYCALLBACK_DR_2WXCDR(wxPyTextDropTarget, wxTextDropTarget, OnEnter);
 215 IMP_PYCALLBACK_DR_2WXCDR(wxPyTextDropTarget, wxTextDropTarget, OnDragOver);
 216 IMP_PYCALLBACK_DR_2WXCDR(wxPyTextDropTarget, wxTextDropTarget, OnData);
 217 IMP_PYCALLBACK_BOOL_INTINT(wxPyTextDropTarget, wxTextDropTarget, OnDrop);
 218
 219 %}
 220
 221 %rename(TextDropTarget) wxPyTextDropTarget;
 222 class wxPyTextDropTarget : public wxPyDropTarget {
 223 public:
 224     %pythonAppend wxPyTextDropTarget   "self._setCallbackInfo(self, TextDropTarget)"
 225
 226     wxPyTextDropTarget();
 227     void _setCallbackInfo(PyObject* self, PyObject* _class);
 228
 229     bool OnDropText(wxCoord x, wxCoord y, const wxString& text);
 230     wxDragResult OnEnter(wxCoord x, wxCoord y, wxDragResult def);
 231     wxDragResult OnDragOver(wxCoord x, wxCoord y, wxDragResult def);
 232     void OnLeave();
 233     bool OnDrop(wxCoord x, wxCoord y);
 234     wxDragResult OnData(wxCoord x, wxCoord y, wxDragResult def);
 235
 236     %MAKE_BASE_FUNC(TextDropTarget, OnDropText);
 237     %MAKE_BASE_FUNC(TextDropTarget, OnEnter);
 238     %MAKE_BASE_FUNC(TextDropTarget, OnDragOver);
 239     %MAKE_BASE_FUNC(TextDropTarget, OnLeave);
 240     %MAKE_BASE_FUNC(TextDropTarget, OnDrop);
 241     %MAKE_BASE_FUNC(TextDropTarget, OnData);
 242 };
 243
 244 //---------------------------------------------------------------------------
 245
 246 // A drop target which accepts files (dragged from File Manager or Explorer)
 247
 248
 249 %{
 250 class wxPyFileDropTarget : public wxFileDropTarget {
 251 public:
 252     wxPyFileDropTarget() {}
 253
 254     virtual bool OnDropFiles(wxCoord x, wxCoord y, const wxArrayString& filenames);
 255
 256     DEC_PYCALLBACK__(OnLeave);
 257     DEC_PYCALLBACK_DR_2WXCDR(OnEnter);
 258     DEC_PYCALLBACK_DR_2WXCDR(OnDragOver);
 259     DEC_PYCALLBACK_DR_2WXCDR(OnData);
 260     DEC_PYCALLBACK_BOOL_INTINT(OnDrop);
 261
 262     PYPRIVATE;
 263 };
 264
 265 bool wxPyFileDropTarget::OnDropFiles(wxCoord x, wxCoord y,
 266                                      const wxArrayString& filenames) {
 267     bool rval = false;
 268     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 269     if (wxPyCBH_findCallback(m_myInst, "OnDropFiles")) {
 270         PyObject* list = wxArrayString2PyList_helper(filenames);
 271         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("(iiO)",x,y,list));
 272         Py_DECREF(list);
 273     }
 274     wxPyEndBlockThreads(blocked);
 275     return rval;
 276 }
 277
 278
 279
 280 IMP_PYCALLBACK__(wxPyFileDropTarget, wxFileDropTarget, OnLeave);
 281 IMP_PYCALLBACK_DR_2WXCDR(wxPyFileDropTarget, wxFileDropTarget, OnEnter);
 282 IMP_PYCALLBACK_DR_2WXCDR(wxPyFileDropTarget, wxFileDropTarget, OnDragOver);
 283 IMP_PYCALLBACK_DR_2WXCDR(wxPyFileDropTarget, wxFileDropTarget, OnData);
 284 IMP_PYCALLBACK_BOOL_INTINT(wxPyFileDropTarget, wxFileDropTarget, OnDrop);
 285
 286 %}
 287
 288
 289 %rename(FileDropTarget) wxPyFileDropTarget;
 290 class wxPyFileDropTarget : public wxPyDropTarget
 291 {
 292 public:
 293     %pythonAppend wxPyFileDropTarget   "self._setCallbackInfo(self, FileDropTarget)"
 294
 295     wxPyFileDropTarget();
 296     void _setCallbackInfo(PyObject* self, PyObject* _class);
 297
 298     bool OnDropFiles(wxCoord x, wxCoord y, const wxArrayString& filenames);
 299     wxDragResult OnEnter(wxCoord x, wxCoord y, wxDragResult def);
 300     wxDragResult OnDragOver(wxCoord x, wxCoord y, wxDragResult def);
 301     void OnLeave();
 302     bool OnDrop(wxCoord x, wxCoord y);
 303     wxDragResult OnData(wxCoord x, wxCoord y, wxDragResult def);
 304
 305     %MAKE_BASE_FUNC(FileDropTarget, OnDropFiles);
 306     %MAKE_BASE_FUNC(FileDropTarget, OnEnter);
 307     %MAKE_BASE_FUNC(FileDropTarget, OnDragOver);
 308     %MAKE_BASE_FUNC(FileDropTarget, OnLeave);
 309     %MAKE_BASE_FUNC(FileDropTarget, OnDrop);
 310     %MAKE_BASE_FUNC(FileDropTarget, OnData);
 311 };
 312
 313
 314 //---------------------------------------------------------------------------
 315 %init %{
 316     wxPyPtrTypeMap_Add("wxDropSource",     "wxPyDropSource");
 317     wxPyPtrTypeMap_Add("wxDropTarget",     "wxPyDropTarget");
 318     wxPyPtrTypeMap_Add("wxTextDropTarget", "wxPyTextDropTarget");
 319     wxPyPtrTypeMap_Add("wxFileDropTarget", "wxPyFileDropTarget");
 320 %}
 321 //---------------------------------------------------------------------------
 322
 323 #endif