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1. wxStaticBox doesn't draw over the underlying controls any more
[wxWidgets.git] / samples / dnd / dnd.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: dnd.cpp
3 // Purpose: Drag and drop sample
4 // Author: Vadim Zeitlin
5 // Modified by:
6 // Created: 04/01/98
7 // RCS-ID: $Id$
8 // Copyright:
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12 #include "wx/wxprec.h"
13
14 #ifdef __BORLANDC__
15 #pragma hdrstop
16 #endif
17
18 #ifndef WX_PRECOMP
19 #include "wx/wx.h"
20 #endif
21
22 #if !wxUSE_DRAG_AND_DROP
23 #error This sample requires drag and drop support in the library
24 #endif
25
26 #include "wx/intl.h"
27 #include "wx/log.h"
28
29 #include "wx/dnd.h"
30 #include "wx/dirdlg.h"
31 #include "wx/filedlg.h"
32 #include "wx/image.h"
33 #include "wx/clipbrd.h"
34 #include "wx/colordlg.h"
35 #include "wx/resource.h"
36
37 #if defined(__WXGTK__) || defined(__WXMOTIF__)
38 #include "mondrian.xpm"
39 #endif
40
41 // ----------------------------------------------------------------------------
42 // Derive two simple classes which just put in the listbox the strings (text or
43 // file names) we drop on them
44 // ----------------------------------------------------------------------------
45
46 class DnDText : public wxTextDropTarget
47 {
48 public:
49 DnDText(wxListBox *pOwner) { m_pOwner = pOwner; }
50
51 virtual bool OnDropText(wxCoord x, wxCoord y, const wxString& text);
52
53 private:
54 wxListBox *m_pOwner;
55 };
56
57 class DnDFile : public wxFileDropTarget
58 {
59 public:
60 DnDFile(wxListBox *pOwner) { m_pOwner = pOwner; }
61
62 virtual bool OnDropFiles(wxCoord x, wxCoord y,
63 const wxArrayString& filenames);
64
65 private:
66 wxListBox *m_pOwner;
67 };
68
69 // ----------------------------------------------------------------------------
70 // Define a new application type
71 // ----------------------------------------------------------------------------
72
73 class DnDApp : public wxApp
74 {
75 public:
76 virtual bool OnInit();
77 };
78
79 IMPLEMENT_APP(DnDApp);
80
81 // ----------------------------------------------------------------------------
82 // Define a new frame type for the main frame
83 // ----------------------------------------------------------------------------
84
85 class DnDFrame : public wxFrame
86 {
87 public:
88 DnDFrame(wxFrame *frame, char *title, int x, int y, int w, int h);
89 ~DnDFrame();
90
91 void OnPaint(wxPaintEvent& event);
92 void OnQuit (wxCommandEvent& event);
93 void OnAbout(wxCommandEvent& event);
94 void OnDrag (wxCommandEvent& event);
95 void OnNewFrame(wxCommandEvent& event);
96 void OnHelp (wxCommandEvent& event);
97 void OnLogClear(wxCommandEvent& event);
98
99 void OnCopy(wxCommandEvent& event);
100 void OnPaste(wxCommandEvent& event);
101
102 void OnCopyBitmap(wxCommandEvent& event);
103 void OnPasteBitmap(wxCommandEvent& event);
104
105 void OnCopyFiles(wxCommandEvent& event);
106
107 void OnLeftDown(wxMouseEvent& event);
108 void OnRightDown(wxMouseEvent& event);
109
110 void OnUpdateUIPasteText(wxUpdateUIEvent& event);
111 void OnUpdateUIPasteBitmap(wxUpdateUIEvent& event);
112
113 DECLARE_EVENT_TABLE()
114
115 private:
116 wxListBox *m_ctrlFile,
117 *m_ctrlText;
118 wxTextCtrl *m_ctrlLog;
119
120 wxLog *m_pLog,
121 *m_pLogPrev;
122
123 wxString m_strText;
124 wxBitmap m_bitmap;
125 };
126
127 // ----------------------------------------------------------------------------
128 // A shape is an example of application-specific data which may be transported
129 // via drag-and-drop or clipboard: in our case, we have different geometric
130 // shapes, each one with its own colour and position
131 // ----------------------------------------------------------------------------
132
133 class DnDShape
134 {
135 public:
136 enum Kind
137 {
138 None,
139 Triangle,
140 Rectangle,
141 Ellipse
142 };
143
144 DnDShape(const wxPoint& pos,
145 const wxSize& size,
146 const wxColour& col)
147 : m_pos(pos), m_size(size), m_col(col)
148 {
149 }
150
151 // this is for debugging - lets us see when exactly an object is freed
152 // (this may be later than you think if it's on the clipboard, for example)
153 virtual ~DnDShape() { }
154
155 // the functions used for drag-and-drop: they dump and restore a shape into
156 // some bitwise-copiable data (might use streams too...)
157 // ------------------------------------------------------------------------
158
159 // restore from buffer
160 static DnDShape *New(const void *buf);
161
162 virtual size_t GetDataSize() const
163 {
164 return sizeof(ShapeDump);
165 }
166
167 virtual void GetDataHere(void *buf) const
168 {
169 ShapeDump& dump = *(ShapeDump *)buf;
170 dump.x = m_pos.x;
171 dump.y = m_pos.y;
172 dump.w = m_size.x;
173 dump.h = m_size.y;
174 dump.r = m_col.Red();
175 dump.g = m_col.Green();
176 dump.b = m_col.Blue();
177 dump.k = GetKind();
178 }
179
180 // accessors
181 const wxPoint& GetPosition() const { return m_pos; }
182 const wxColour& GetColour() const { return m_col; }
183 const wxSize& GetSize() const { return m_size; }
184
185 void Move(const wxPoint& pos) { m_pos = pos; }
186
187 // to implement in derived classes
188 virtual Kind GetKind() const = 0;
189
190 virtual void Draw(wxDC& dc)
191 {
192 dc.SetPen(wxPen(m_col, 1, wxSOLID));
193 }
194
195 protected:
196 wxPoint GetCentre() const
197 { return wxPoint(m_pos.x + m_size.x / 2, m_pos.y + m_size.y / 2); }
198
199 struct ShapeDump
200 {
201 int x, y, // position
202 w, h, // size
203 r, g, b, // colour
204 k; // kind
205 };
206
207 wxPoint m_pos;
208 wxSize m_size;
209 wxColour m_col;
210 };
211
212 class DnDTriangularShape : public DnDShape
213 {
214 public:
215 DnDTriangularShape(const wxPoint& pos,
216 const wxSize& size,
217 const wxColour& col)
218 : DnDShape(pos, size, col)
219 {
220 wxLogMessage("DnDTriangularShape is being created");
221 }
222
223 virtual ~DnDTriangularShape()
224 {
225 wxLogMessage("DnDTriangularShape is being deleted");
226 }
227
228 virtual Kind GetKind() const { return Triangle; }
229 virtual void Draw(wxDC& dc)
230 {
231 DnDShape::Draw(dc);
232
233 // well, it's a bit difficult to describe a triangle by position and
234 // size, but we're not doing geometry here, do we? ;-)
235 wxPoint p1(m_pos);
236 wxPoint p2(m_pos.x + m_size.x, m_pos.y);
237 wxPoint p3(m_pos.x, m_pos.y + m_size.y);
238
239 dc.DrawLine(p1, p2);
240 dc.DrawLine(p2, p3);
241 dc.DrawLine(p3, p1);
242
243 #ifdef __WXMSW__
244 dc.FloodFill(GetCentre(), m_col, wxFLOOD_BORDER);
245 #endif
246 }
247 };
248
249 class DnDRectangularShape : public DnDShape
250 {
251 public:
252 DnDRectangularShape(const wxPoint& pos,
253 const wxSize& size,
254 const wxColour& col)
255 : DnDShape(pos, size, col)
256 {
257 wxLogMessage("DnDRectangularShape is being created");
258 }
259
260 virtual ~DnDRectangularShape()
261 {
262 wxLogMessage("DnDRectangularShape is being deleted");
263 }
264
265 virtual Kind GetKind() const { return Rectangle; }
266 virtual void Draw(wxDC& dc)
267 {
268 DnDShape::Draw(dc);
269
270 wxPoint p1(m_pos);
271 wxPoint p2(p1.x + m_size.x, p1.y);
272 wxPoint p3(p2.x, p2.y + m_size.y);
273 wxPoint p4(p1.x, p3.y);
274
275 dc.DrawLine(p1, p2);
276 dc.DrawLine(p2, p3);
277 dc.DrawLine(p3, p4);
278 dc.DrawLine(p4, p1);
279
280 #ifdef __WXMSW__
281 dc.FloodFill(GetCentre(), m_col, wxFLOOD_BORDER);
282 #endif
283 }
284 };
285
286 class DnDEllipticShape : public DnDShape
287 {
288 public:
289 DnDEllipticShape(const wxPoint& pos,
290 const wxSize& size,
291 const wxColour& col)
292 : DnDShape(pos, size, col)
293 {
294 wxLogMessage("DnDEllipticShape is being created");
295 }
296
297 virtual ~DnDEllipticShape()
298 {
299 wxLogMessage("DnDEllipticShape is being deleted");
300 }
301
302 virtual Kind GetKind() const { return Ellipse; }
303 virtual void Draw(wxDC& dc)
304 {
305 DnDShape::Draw(dc);
306
307 dc.DrawEllipse(m_pos, m_size);
308
309 #ifdef __WXMSW__
310 dc.FloodFill(GetCentre(), m_col, wxFLOOD_BORDER);
311 #endif
312 }
313 };
314
315 // ----------------------------------------------------------------------------
316 // A wxDataObject specialisation for the application-specific data
317 // ----------------------------------------------------------------------------
318
319 static const char *shapeFormatId = "wxShape";
320
321 class DnDShapeDataObject : public wxDataObject
322 {
323 public:
324 // ctor doesn't copy the pointer, so it shouldn't go away while this object
325 // is alive
326 DnDShapeDataObject(DnDShape *shape = (DnDShape *)NULL)
327 {
328 if ( shape )
329 {
330 // we need to copy the shape because the one we're handled may be
331 // deleted while it's still on the clipboard (for example) - and we
332 // reuse the serialisation methods here to copy it
333 void *buf = malloc(shape->DnDShape::GetDataSize());
334 shape->GetDataHere(buf);
335 m_shape = DnDShape::New(buf);
336
337 free(buf);
338 }
339 else
340 {
341 // nothing to copy
342 m_shape = NULL;
343 }
344
345 // this string should uniquely identify our format, but is otherwise
346 // arbitrary
347 m_formatShape.SetId(shapeFormatId);
348
349 // we don't draw the shape to a bitmap until it's really needed (i.e.
350 // we're asked to do so)
351 m_hasBitmap = FALSE;
352 }
353
354 virtual ~DnDShapeDataObject() { delete m_shape; }
355
356 // after a call to this function, the shape is owned by the caller and it
357 // is responsible for deleting it!
358 //
359 // NB: a better solution would be to make DnDShapes ref counted and this
360 // is what should probably be done in a real life program, otherwise
361 // the ownership problems become too complicated really fast
362 DnDShape *GetShape()
363 {
364 DnDShape *shape = m_shape;
365
366 m_shape = (DnDShape *)NULL;
367 m_hasBitmap = FALSE;
368
369 return shape;
370 }
371
372 // implement base class pure virtuals
373 // ----------------------------------
374
375 virtual wxDataFormat GetPreferredFormat(Direction WXUNUSED(dir)) const
376 {
377 return m_formatShape;
378 }
379
380 virtual size_t GetFormatCount(Direction dir) const
381 {
382 // our custom format is supported by both GetData() and SetData()
383 size_t nFormats = 1;
384 if ( dir == Get )
385 {
386 // but the bitmap format(s) are only supported for output
387 nFormats += m_dataobj.GetFormatCount(dir);
388 }
389
390 return nFormats;
391 }
392
393 virtual void GetAllFormats(wxDataFormat *formats, Direction dir) const
394 {
395 formats[0] = m_formatShape;
396 if ( dir == Get )
397 {
398 m_dataobj.GetAllFormats(&formats[1], dir);
399 }
400 }
401
402 virtual size_t GetDataSize(const wxDataFormat& format) const
403 {
404 if ( format == m_formatShape )
405 {
406 return m_shape->GetDataSize();
407 }
408 else
409 {
410 if ( !m_hasBitmap )
411 CreateBitmap();
412
413 return m_dataobj.GetDataSize();
414 }
415 }
416
417 virtual bool GetDataHere(const wxDataFormat& format, void *pBuf) const
418 {
419 if ( format == m_formatShape )
420 {
421 m_shape->GetDataHere(pBuf);
422
423 return TRUE;
424 }
425 else
426 {
427 if ( !m_hasBitmap )
428 CreateBitmap();
429
430 return m_dataobj.GetDataHere(pBuf);
431 }
432 }
433
434 virtual bool SetData(const wxDataFormat& format,
435 size_t len, const void *buf)
436 {
437 wxCHECK_MSG( format == m_formatShape, FALSE, "unsupported format" );
438
439 delete m_shape;
440 m_shape = DnDShape::New(buf);
441
442 // the shape has changed
443 m_hasBitmap = FALSE;
444
445 return TRUE;
446 }
447
448 private:
449 // creates a bitmap and assigns it to m_dataobj (also sets m_hasBitmap)
450 void CreateBitmap() const;
451
452 wxDataFormat m_formatShape; // our custom format
453
454 wxBitmapDataObject m_dataobj; // it handles bitmaps
455 bool m_hasBitmap; // true if m_dataobj has valid bitmap
456
457 DnDShape *m_shape; // our data
458 };
459
460 // ----------------------------------------------------------------------------
461 // A dialog to edit shape properties
462 // ----------------------------------------------------------------------------
463
464 class DnDShapeDialog : public wxDialog
465 {
466 public:
467 DnDShapeDialog(wxFrame *parent, DnDShape *shape);
468
469 DnDShape *GetShape() const;
470
471 virtual bool TransferDataToWindow();
472 virtual bool TransferDataFromWindow();
473
474 void OnColour(wxCommandEvent& event);
475
476 private:
477 // input
478 DnDShape *m_shape;
479
480 // output
481 DnDShape::Kind m_shapeKind;
482 wxPoint m_pos;
483 wxSize m_size;
484 wxColour m_col;
485
486 // controls
487 wxRadioBox *m_radio;
488 wxTextCtrl *m_textX,
489 *m_textY,
490 *m_textW,
491 *m_textH;
492
493 DECLARE_EVENT_TABLE()
494 };
495
496 // ----------------------------------------------------------------------------
497 // A frame for the shapes which can be drag-and-dropped between frames
498 // ----------------------------------------------------------------------------
499
500 class DnDShapeFrame : public wxFrame
501 {
502 public:
503 DnDShapeFrame(wxFrame *parent);
504 ~DnDShapeFrame();
505
506 void SetShape(DnDShape *shape);
507
508 // callbacks
509 void OnNewShape(wxCommandEvent& event);
510 void OnEditShape(wxCommandEvent& event);
511 void OnClearShape(wxCommandEvent& event);
512
513 void OnCopyShape(wxCommandEvent& event);
514 void OnPasteShape(wxCommandEvent& event);
515
516 void OnUpdateUICopy(wxUpdateUIEvent& event);
517 void OnUpdateUIPaste(wxUpdateUIEvent& event);
518
519 void OnDrag(wxMouseEvent& event);
520 void OnPaint(wxPaintEvent& event);
521 void OnDrop(wxCoord x, wxCoord y, DnDShape *shape);
522
523 private:
524 DnDShape *m_shape;
525
526 static DnDShapeFrame *ms_lastDropTarget;
527
528 DECLARE_EVENT_TABLE()
529 };
530
531 // ----------------------------------------------------------------------------
532 // wxDropTarget derivation for DnDShapes
533 // ----------------------------------------------------------------------------
534
535 class DnDShapeDropTarget : public wxDropTarget
536 {
537 public:
538 DnDShapeDropTarget(DnDShapeFrame *frame)
539 : wxDropTarget(new DnDShapeDataObject)
540 {
541 m_frame = frame;
542 }
543
544 // override base class (pure) virtuals
545 virtual void OnEnter()
546 { m_frame->SetStatusText("Mouse entered the frame"); }
547 virtual void OnLeave()
548 { m_frame->SetStatusText("Mouse left the frame"); }
549 virtual wxDragResult OnData(wxCoord x, wxCoord y, wxDragResult def)
550 {
551 if ( !GetData() )
552 {
553 wxLogError("Failed to get drag and drop data");
554
555 return wxDragNone;
556 }
557
558 m_frame->OnDrop(x, y,
559 ((DnDShapeDataObject *)GetDataObject())->GetShape());
560
561 return def;
562 }
563
564 private:
565 DnDShapeFrame *m_frame;
566 };
567
568 // ----------------------------------------------------------------------------
569 // IDs for the menu commands
570 // ----------------------------------------------------------------------------
571
572 enum
573 {
574 Menu_Quit = 1,
575 Menu_Drag,
576 Menu_NewFrame,
577 Menu_About = 101,
578 Menu_Help,
579 Menu_Clear,
580 Menu_Copy,
581 Menu_Paste,
582 Menu_CopyBitmap,
583 Menu_PasteBitmap,
584 Menu_CopyFiles,
585 Menu_Shape_New = 500,
586 Menu_Shape_Edit,
587 Menu_Shape_Clear,
588 Menu_ShapeClipboard_Copy,
589 Menu_ShapeClipboard_Paste,
590 Button_Colour = 1001
591 };
592
593 BEGIN_EVENT_TABLE(DnDFrame, wxFrame)
594 EVT_MENU(Menu_Quit, DnDFrame::OnQuit)
595 EVT_MENU(Menu_About, DnDFrame::OnAbout)
596 EVT_MENU(Menu_Drag, DnDFrame::OnDrag)
597 EVT_MENU(Menu_NewFrame, DnDFrame::OnNewFrame)
598 EVT_MENU(Menu_Help, DnDFrame::OnHelp)
599 EVT_MENU(Menu_Clear, DnDFrame::OnLogClear)
600 EVT_MENU(Menu_Copy, DnDFrame::OnCopy)
601 EVT_MENU(Menu_Paste, DnDFrame::OnPaste)
602 EVT_MENU(Menu_CopyBitmap, DnDFrame::OnCopyBitmap)
603 EVT_MENU(Menu_PasteBitmap,DnDFrame::OnPasteBitmap)
604 EVT_MENU(Menu_CopyFiles, DnDFrame::OnCopyFiles)
605
606 EVT_UPDATE_UI(Menu_Paste, DnDFrame::OnUpdateUIPasteText)
607 EVT_UPDATE_UI(Menu_PasteBitmap, DnDFrame::OnUpdateUIPasteBitmap)
608
609 EVT_LEFT_DOWN( DnDFrame::OnLeftDown)
610 EVT_RIGHT_DOWN( DnDFrame::OnRightDown)
611 EVT_PAINT( DnDFrame::OnPaint)
612 END_EVENT_TABLE()
613
614 BEGIN_EVENT_TABLE(DnDShapeFrame, wxFrame)
615 EVT_MENU(Menu_Shape_New, DnDShapeFrame::OnNewShape)
616 EVT_MENU(Menu_Shape_Edit, DnDShapeFrame::OnEditShape)
617 EVT_MENU(Menu_Shape_Clear, DnDShapeFrame::OnClearShape)
618
619 EVT_MENU(Menu_ShapeClipboard_Copy, DnDShapeFrame::OnCopyShape)
620 EVT_MENU(Menu_ShapeClipboard_Paste, DnDShapeFrame::OnPasteShape)
621
622 EVT_UPDATE_UI(Menu_ShapeClipboard_Copy, DnDShapeFrame::OnUpdateUICopy)
623 EVT_UPDATE_UI(Menu_ShapeClipboard_Paste, DnDShapeFrame::OnUpdateUIPaste)
624
625 EVT_LEFT_DOWN(DnDShapeFrame::OnDrag)
626
627 EVT_PAINT(DnDShapeFrame::OnPaint)
628 END_EVENT_TABLE()
629
630 BEGIN_EVENT_TABLE(DnDShapeDialog, wxDialog)
631 EVT_BUTTON(Button_Colour, DnDShapeDialog::OnColour)
632 END_EVENT_TABLE()
633
634 // ============================================================================
635 // implementation
636 // ============================================================================
637
638 // `Main program' equivalent, creating windows and returning main app frame
639 bool DnDApp::OnInit()
640 {
641 // load our ressources
642 wxPathList pathList;
643 pathList.Add(".");
644 #ifdef __WXMSW__
645 pathList.Add("./Debug");
646 pathList.Add("./Release");
647 #endif // wxMSW
648
649 wxString path = pathList.FindValidPath("dnd.wxr");
650 if ( !path )
651 {
652 wxLogError("Can't find the resource file dnd.wxr in the current "
653 "directory, aborting.");
654
655 return FALSE;
656 }
657
658 wxDefaultResourceTable->ParseResourceFile(path);
659
660 #if wxUSE_LIBPNG
661 wxImage::AddHandler( new wxPNGHandler );
662 #endif
663
664 // under X we usually want to use the primary selection by default (which
665 // is shared with other apps)
666 wxTheClipboard->UsePrimarySelection();
667
668 // create the main frame window
669 DnDFrame *frame = new DnDFrame((wxFrame *) NULL,
670 "Drag-and-Drop/Clipboard wxWindows Sample",
671 10, 10, 450, 340);
672
673 // activate it
674 frame->Show(TRUE);
675
676 SetTopWindow(frame);
677
678 return TRUE;
679 }
680
681 DnDFrame::DnDFrame(wxFrame *frame, char *title, int x, int y, int w, int h)
682 : wxFrame(frame, -1, title, wxPoint(x, y), wxSize(w, h)),
683 m_strText("wxWindows drag & drop works :-)")
684
685 {
686 // frame icon and status bar
687 SetIcon(wxICON(mondrian));
688
689 CreateStatusBar();
690
691 // construct menu
692 wxMenu *file_menu = new wxMenu;
693 file_menu->Append(Menu_Drag, "&Test drag...");
694 file_menu->AppendSeparator();
695 file_menu->Append(Menu_NewFrame, "&New frame\tCtrl-N");
696 file_menu->AppendSeparator();
697 file_menu->Append(Menu_Quit, "E&xit");
698
699 wxMenu *log_menu = new wxMenu;
700 log_menu->Append(Menu_Clear, "Clear\tCtrl-L");
701
702 wxMenu *help_menu = new wxMenu;
703 help_menu->Append(Menu_Help, "&Help...");
704 help_menu->AppendSeparator();
705 help_menu->Append(Menu_About, "&About");
706
707 wxMenu *clip_menu = new wxMenu;
708 clip_menu->Append(Menu_Copy, "&Copy text\tCtrl+C");
709 clip_menu->Append(Menu_Paste, "&Paste text\tCtrl+V");
710 clip_menu->AppendSeparator();
711 clip_menu->Append(Menu_CopyBitmap, "&Copy bitmap\tAlt+C");
712 clip_menu->Append(Menu_PasteBitmap, "&Paste bitmap\tAlt+V");
713 clip_menu->AppendSeparator();
714 clip_menu->Append(Menu_CopyFiles, "&Copy files\tCtrl+F");
715
716 wxMenuBar *menu_bar = new wxMenuBar;
717 menu_bar->Append(file_menu, "&File");
718 menu_bar->Append(log_menu, "&Log");
719 menu_bar->Append(clip_menu, "&Clipboard");
720 menu_bar->Append(help_menu, "&Help");
721
722 SetMenuBar(menu_bar);
723
724 // make a panel with 3 subwindows
725 wxPoint pos(0, 0);
726 wxSize size(400, 200);
727
728 wxString strFile("Drop files here!"), strText("Drop text on me");
729
730 m_ctrlFile = new wxListBox(this, -1, pos, size, 1, &strFile,
731 wxLB_HSCROLL | wxLB_ALWAYS_SB );
732 m_ctrlText = new wxListBox(this, -1, pos, size, 1, &strText,
733 wxLB_HSCROLL | wxLB_ALWAYS_SB );
734
735 m_ctrlLog = new wxTextCtrl(this, -1, "", pos, size,
736 wxTE_MULTILINE | wxTE_READONLY |
737 wxSUNKEN_BORDER );
738
739 #ifdef __WXMSW__
740 // redirect log messages to the text window and switch on OLE messages
741 // logging
742 wxLog::AddTraceMask(wxTRACE_OleCalls);
743 #endif
744 m_pLog = new wxLogTextCtrl(m_ctrlLog);
745 m_pLogPrev = wxLog::SetActiveTarget(m_pLog);
746
747 // associate drop targets with 2 text controls
748 m_ctrlFile->SetDropTarget(new DnDFile(m_ctrlFile));
749 m_ctrlText->SetDropTarget(new DnDText(m_ctrlText));
750
751 wxLayoutConstraints *c;
752
753 // Top-left listbox
754 c = new wxLayoutConstraints;
755 c->left.SameAs(this, wxLeft);
756 c->top.SameAs(this, wxTop);
757 c->right.PercentOf(this, wxRight, 50);
758 c->height.PercentOf(this, wxHeight, 30);
759 m_ctrlFile->SetConstraints(c);
760
761 // Top-right listbox
762 c = new wxLayoutConstraints;
763 c->left.SameAs (m_ctrlFile, wxRight);
764 c->top.SameAs (this, wxTop);
765 c->right.SameAs (this, wxRight);
766 c->height.PercentOf(this, wxHeight, 30);
767 m_ctrlText->SetConstraints(c);
768
769 // Lower text control
770 c = new wxLayoutConstraints;
771 c->left.SameAs (this, wxLeft);
772 c->right.SameAs (this, wxRight);
773 c->height.PercentOf(this, wxHeight, 50);
774 c->top.SameAs(m_ctrlText, wxBottom);
775 m_ctrlLog->SetConstraints(c);
776
777 SetAutoLayout(TRUE);
778 }
779
780 void DnDFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
781 {
782 Close(TRUE);
783 }
784
785 void DnDFrame::OnPaint(wxPaintEvent& WXUNUSED(event))
786 {
787 int w = 0;
788 int h = 0;
789 GetClientSize( &w, &h );
790
791 wxPaintDC dc(this);
792 dc.SetFont( wxFont( 24, wxDECORATIVE, wxNORMAL, wxNORMAL, FALSE, "charter" ) );
793 dc.DrawText( "Drag text from here!", 20, h-50 );
794
795 if ( m_bitmap.Ok() )
796 {
797 // 4/5 is 80% taken by other windows, 20 is arbitrary margin
798 dc.DrawBitmap(m_bitmap,
799 w - m_bitmap.GetWidth() - 20,
800 (4*h)/5 + 20);
801 }
802 }
803
804 void DnDFrame::OnUpdateUIPasteText(wxUpdateUIEvent& event)
805 {
806 event.Enable( wxTheClipboard->IsSupported(wxDF_TEXT) );
807 }
808
809 void DnDFrame::OnUpdateUIPasteBitmap(wxUpdateUIEvent& event)
810 {
811 event.Enable( wxTheClipboard->IsSupported(wxDF_BITMAP) );
812 }
813
814 void DnDFrame::OnNewFrame(wxCommandEvent& WXUNUSED(event))
815 {
816 (new DnDShapeFrame(this))->Show(TRUE);
817
818 wxLogStatus(this, "Double click the new frame to select a shape for it");
819 }
820
821 void DnDFrame::OnDrag(wxCommandEvent& WXUNUSED(event))
822 {
823 wxString strText = wxGetTextFromUser
824 (
825 "After you enter text in this dialog, press any mouse\n"
826 "button in the bottom (empty) part of the frame and \n"
827 "drag it anywhere - you will be in fact dragging the\n"
828 "text object containing this text",
829 "Please enter some text", m_strText, this
830 );
831
832 m_strText = strText;
833 }
834
835 void DnDFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
836 {
837 wxMessageBox("Drag-&-Drop Demo\n"
838 "Please see \"Help|Help...\" for details\n"
839 "Copyright (c) 1998 Vadim Zeitlin",
840 "About wxDnD",
841 wxICON_INFORMATION | wxOK,
842 this);
843 }
844
845 void DnDFrame::OnHelp(wxCommandEvent& /* event */)
846 {
847 wxMessageDialog dialog(this,
848 "This small program demonstrates drag & drop support in wxWindows. The program window\n"
849 "consists of 3 parts: the bottom pane is for debug messages, so that you can see what's\n"
850 "going on inside. The top part is split into 2 listboxes, the left one accepts files\n"
851 "and the right one accepts text.\n"
852 "\n"
853 "To test wxDropTarget: open wordpad (write.exe), select some text in it and drag it to\n"
854 "the right listbox (you'll notice the usual visual feedback, i.e. the cursor will change).\n"
855 "Also, try dragging some files (you can select several at once) from Windows Explorer (or \n"
856 "File Manager) to the left pane. Hold down Ctrl/Shift keys when you drop text (doesn't \n"
857 "work with files) and see what changes.\n"
858 "\n"
859 "To test wxDropSource: just press any mouse button on the empty zone of the window and drag\n"
860 "it to wordpad or any other droptarget accepting text (and of course you can just drag it\n"
861 "to the right pane). Due to a lot of trace messages, the cursor might take some time to \n"
862 "change, don't release the mouse button until it does. You can change the string being\n"
863 "dragged in in \"File|Test drag...\" dialog.\n"
864 "\n"
865 "\n"
866 "Please send all questions/bug reports/suggestions &c to \n"
867 "Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>",
868 "wxDnD Help");
869
870 dialog.ShowModal();
871 }
872
873 void DnDFrame::OnLogClear(wxCommandEvent& /* event */ )
874 {
875 m_ctrlLog->Clear();
876 m_ctrlText->Clear();
877 m_ctrlFile->Clear();
878 }
879
880 void DnDFrame::OnLeftDown(wxMouseEvent &WXUNUSED(event) )
881 {
882 if ( !m_strText.IsEmpty() )
883 {
884 // start drag operation
885 wxTextDataObject textData(m_strText);
886 /*
887 wxFileDataObject textData;
888 textData.AddFile( "/file1.txt" );
889 textData.AddFile( "/file2.txt" );
890 */
891 wxDropSource source(textData, this
892
893 #ifdef __WXMSW__
894 ,wxCURSOR_PENCIL, // for copy
895 wxCURSOR_SPRAYCAN, // for move
896 wxCURSOR_QUESTION_ARROW // for nothing
897 #endif
898 );
899
900 const char *pc;
901
902 switch ( source.DoDragDrop(TRUE) )
903 {
904 case wxDragError: pc = "Error!"; break;
905 case wxDragNone: pc = "Nothing"; break;
906 case wxDragCopy: pc = "Copied"; break;
907 case wxDragMove: pc = "Moved"; break;
908 case wxDragCancel: pc = "Cancelled"; break;
909 default: pc = "Huh?"; break;
910 }
911
912 SetStatusText(wxString("Drag result: ") + pc);
913 }
914 }
915
916 void DnDFrame::OnRightDown(wxMouseEvent &event )
917 {
918 wxMenu menu("Dnd sample menu");
919
920 menu.Append(Menu_Drag, "&Test drag...");
921 menu.AppendSeparator();
922 menu.Append(Menu_About, "&About");
923
924 PopupMenu( &menu, event.GetX(), event.GetY() );
925 }
926
927 DnDFrame::~DnDFrame()
928 {
929 if ( m_pLog != NULL ) {
930 if ( wxLog::SetActiveTarget(m_pLogPrev) == m_pLog )
931 delete m_pLog;
932 }
933 }
934
935 // ---------------------------------------------------------------------------
936 // bitmap clipboard
937 // ---------------------------------------------------------------------------
938
939 void DnDFrame::OnCopyBitmap(wxCommandEvent& WXUNUSED(event))
940 {
941 // PNG support is not always compiled in under Windows, so use BMP there
942 #ifdef __WXMSW__
943 wxFileDialog dialog(this, "Open a BMP file", "", "", "BMP files (*.bmp)|*.bmp", 0);
944 #else
945 wxFileDialog dialog(this, "Open a PNG file", "", "", "PNG files (*.png)|*.png", 0);
946 #endif
947
948 if (dialog.ShowModal() != wxID_OK)
949 {
950 wxLogMessage( _T("Aborted file open") );
951 return;
952 }
953
954 if (dialog.GetPath().IsEmpty())
955 {
956 wxLogMessage( _T("Returned empty string.") );
957 return;
958 }
959
960 if (!wxFileExists(dialog.GetPath()))
961 {
962 wxLogMessage( _T("File doesn't exist.") );
963 return;
964 }
965
966 wxImage image;
967 image.LoadFile( dialog.GetPath(),
968 #ifdef __WXMSW__
969 wxBITMAP_TYPE_BMP
970 #else
971 wxBITMAP_TYPE_PNG
972 #endif
973 );
974 if (!image.Ok())
975 {
976 wxLogError( _T("Invalid image file...") );
977 return;
978 }
979
980 wxLogStatus( _T("Decoding image file...") );
981 wxYield();
982
983 wxBitmap bitmap( image.ConvertToBitmap() );
984
985 if ( !wxTheClipboard->Open() )
986 {
987 wxLogError(_T("Can't open clipboard."));
988
989 return;
990 }
991
992 wxLogMessage( _T("Creating wxBitmapDataObject...") );
993 wxYield();
994
995 if ( !wxTheClipboard->AddData(new wxBitmapDataObject(bitmap)) )
996 {
997 wxLogError(_T("Can't copy image to the clipboard."));
998 }
999 else
1000 {
1001 wxLogMessage(_T("Image has been put on the clipboard.") );
1002 wxLogMessage(_T("You can paste it now and look at it.") );
1003 }
1004
1005 wxTheClipboard->Close();
1006 }
1007
1008 void DnDFrame::OnPasteBitmap(wxCommandEvent& WXUNUSED(event))
1009 {
1010 if ( !wxTheClipboard->Open() )
1011 {
1012 wxLogError(_T("Can't open clipboard."));
1013
1014 return;
1015 }
1016
1017 if ( !wxTheClipboard->IsSupported(wxDF_BITMAP) )
1018 {
1019 wxLogWarning(_T("No bitmap on clipboard"));
1020
1021 wxTheClipboard->Close();
1022 return;
1023 }
1024
1025 wxBitmapDataObject data;
1026 if ( !wxTheClipboard->GetData(data) )
1027 {
1028 wxLogError(_T("Can't paste bitmap from the clipboard"));
1029 }
1030 else
1031 {
1032 wxLogMessage(_T("Bitmap pasted from the clipboard") );
1033 m_bitmap = data.GetBitmap();
1034 Refresh();
1035 }
1036
1037 wxTheClipboard->Close();
1038 }
1039
1040 // ----------------------------------------------------------------------------
1041 // file clipboard
1042 // ----------------------------------------------------------------------------
1043
1044 void DnDFrame::OnCopyFiles(wxCommandEvent& WXUNUSED(event))
1045 {
1046 #ifdef __WXMSW__
1047 wxFileDialog dialog(this, "Select a file to copy", "", "",
1048 "All files (*.*)|*.*", 0);
1049
1050 wxArrayString filenames;
1051 while ( dialog.ShowModal() == wxID_OK )
1052 {
1053 filenames.Add(dialog.GetPath());
1054 }
1055
1056 if ( !filenames.IsEmpty() )
1057 {
1058 wxFileDataObject *dobj = new wxFileDataObject;
1059 size_t count = filenames.GetCount();
1060 for ( size_t n = 0; n < count; n++ )
1061 {
1062 dobj->AddFile(filenames[n]);
1063 }
1064
1065 wxClipboardLocker locker;
1066 if ( !locker )
1067 {
1068 wxLogError("Can't open clipboard");
1069 }
1070 else
1071 {
1072 if ( !wxTheClipboard->AddData(dobj) )
1073 {
1074 wxLogError("Can't copy file(s) to the clipboard");
1075 }
1076 else
1077 {
1078 wxLogStatus(this, "%d file%s copied to the clipboard",
1079 count, count == 1 ? "" : "s");
1080 }
1081 }
1082 }
1083 else
1084 {
1085 wxLogStatus(this, "Aborted");
1086 }
1087 #else // !MSW
1088 wxLogError("Sorry, not implemented");
1089 #endif // MSW/!MSW
1090 }
1091
1092 // ---------------------------------------------------------------------------
1093 // text clipboard
1094 // ---------------------------------------------------------------------------
1095
1096 void DnDFrame::OnCopy(wxCommandEvent& WXUNUSED(event))
1097 {
1098 if ( !wxTheClipboard->Open() )
1099 {
1100 wxLogError(_T("Can't open clipboard."));
1101
1102 return;
1103 }
1104
1105 if ( !wxTheClipboard->AddData(new wxTextDataObject(m_strText)) )
1106 {
1107 wxLogError(_T("Can't copy data to the clipboard"));
1108 }
1109 else
1110 {
1111 wxLogMessage(_T("Text '%s' put on the clipboard"), m_strText.c_str());
1112 }
1113
1114 wxTheClipboard->Close();
1115 }
1116
1117 void DnDFrame::OnPaste(wxCommandEvent& WXUNUSED(event))
1118 {
1119 if ( !wxTheClipboard->Open() )
1120 {
1121 wxLogError(_T("Can't open clipboard."));
1122
1123 return;
1124 }
1125
1126 if ( !wxTheClipboard->IsSupported(wxDF_TEXT) )
1127 {
1128 wxLogWarning(_T("No text data on clipboard"));
1129
1130 wxTheClipboard->Close();
1131 return;
1132 }
1133
1134 wxTextDataObject text;
1135 if ( !wxTheClipboard->GetData(text) )
1136 {
1137 wxLogError(_T("Can't paste data from the clipboard"));
1138 }
1139 else
1140 {
1141 wxLogMessage(_T("Text '%s' pasted from the clipboard"),
1142 text.GetText().c_str());
1143 }
1144
1145 wxTheClipboard->Close();
1146 }
1147
1148 // ----------------------------------------------------------------------------
1149 // Notifications called by the base class
1150 // ----------------------------------------------------------------------------
1151
1152 bool DnDText::OnDropText(wxCoord, wxCoord, const wxString& text)
1153 {
1154 m_pOwner->Append(text);
1155
1156 return TRUE;
1157 }
1158
1159 bool DnDFile::OnDropFiles(wxCoord, wxCoord, const wxArrayString& filenames)
1160 {
1161 size_t nFiles = filenames.GetCount();
1162 wxString str;
1163 str.Printf( _T("%d files dropped"), nFiles);
1164 m_pOwner->Append(str);
1165 for ( size_t n = 0; n < nFiles; n++ ) {
1166 m_pOwner->Append(filenames[n]);
1167 }
1168
1169 return TRUE;
1170 }
1171
1172 // ----------------------------------------------------------------------------
1173 // DnDShapeDialog
1174 // ----------------------------------------------------------------------------
1175
1176 DnDShapeDialog::DnDShapeDialog(wxFrame *parent, DnDShape *shape)
1177 {
1178 m_shape = shape;
1179
1180 LoadFromResource(parent, "dialogShape");
1181
1182 m_textX = (wxTextCtrl *)wxFindWindowByName("textX", this);
1183 m_textY = (wxTextCtrl *)wxFindWindowByName("textY", this);
1184 m_textW = (wxTextCtrl *)wxFindWindowByName("textW", this);
1185 m_textH = (wxTextCtrl *)wxFindWindowByName("textH", this);
1186
1187 m_radio = (wxRadioBox *)wxFindWindowByName("radio", this);
1188 }
1189
1190 DnDShape *DnDShapeDialog::GetShape() const
1191 {
1192 switch ( m_shapeKind )
1193 {
1194 default:
1195 case DnDShape::None: return NULL;
1196 case DnDShape::Triangle: return new DnDTriangularShape(m_pos, m_size, m_col);
1197 case DnDShape::Rectangle: return new DnDRectangularShape(m_pos, m_size, m_col);
1198 case DnDShape::Ellipse: return new DnDEllipticShape(m_pos, m_size, m_col);
1199 }
1200 }
1201
1202 bool DnDShapeDialog::TransferDataToWindow()
1203 {
1204
1205 if ( m_shape )
1206 {
1207 m_radio->SetSelection(m_shape->GetKind());
1208 m_pos = m_shape->GetPosition();
1209 m_size = m_shape->GetSize();
1210 m_col = m_shape->GetColour();
1211 }
1212 else
1213 {
1214 m_radio->SetSelection(DnDShape::None);
1215 m_pos = wxPoint(1, 1);
1216 m_size = wxSize(100, 100);
1217 }
1218
1219 m_textX->SetValue(wxString() << m_pos.x);
1220 m_textY->SetValue(wxString() << m_pos.y);
1221 m_textW->SetValue(wxString() << m_size.x);
1222 m_textH->SetValue(wxString() << m_size.y);
1223
1224 return TRUE;
1225 }
1226
1227 bool DnDShapeDialog::TransferDataFromWindow()
1228 {
1229 m_shapeKind = (DnDShape::Kind)m_radio->GetSelection();
1230
1231 m_pos.x = atoi(m_textX->GetValue());
1232 m_pos.y = atoi(m_textY->GetValue());
1233 m_size.x = atoi(m_textW->GetValue());
1234 m_size.y = atoi(m_textH->GetValue());
1235
1236 if ( !m_pos.x || !m_pos.y || !m_size.x || !m_size.y )
1237 {
1238 wxMessageBox("All sizes and positions should be non null!",
1239 "Invalid shape", wxICON_HAND | wxOK, this);
1240
1241 return FALSE;
1242 }
1243
1244 return TRUE;
1245 }
1246
1247 void DnDShapeDialog::OnColour(wxCommandEvent& WXUNUSED(event))
1248 {
1249 wxColourData data;
1250 data.SetChooseFull(TRUE);
1251 for (int i = 0; i < 16; i++)
1252 {
1253 wxColour colour(i*16, i*16, i*16);
1254 data.SetCustomColour(i, colour);
1255 }
1256
1257 wxColourDialog dialog(this, &data);
1258 if ( dialog.ShowModal() == wxID_OK )
1259 {
1260 m_col = dialog.GetColourData().GetColour();
1261 }
1262 }
1263
1264 // ----------------------------------------------------------------------------
1265 // DnDShapeFrame
1266 // ----------------------------------------------------------------------------
1267
1268 DnDShapeFrame *DnDShapeFrame::ms_lastDropTarget = NULL;
1269
1270 DnDShapeFrame::DnDShapeFrame(wxFrame *parent)
1271 : wxFrame(parent, -1, "Shape Frame",
1272 wxDefaultPosition, wxSize(250, 150))
1273 {
1274 CreateStatusBar();
1275
1276 wxMenu *menuShape = new wxMenu;
1277 menuShape->Append(Menu_Shape_New, "&New default shape\tCtrl-S");
1278 menuShape->Append(Menu_Shape_Edit, "&Edit shape\tCtrl-E");
1279 menuShape->AppendSeparator();
1280 menuShape->Append(Menu_Shape_Clear, "&Clear shape\tDel");
1281
1282 wxMenu *menuClipboard = new wxMenu;
1283 menuClipboard->Append(Menu_ShapeClipboard_Copy, "&Copy\tCtrl-C");
1284 menuClipboard->Append(Menu_ShapeClipboard_Paste, "&Paste\tCtrl-V");
1285
1286 wxMenuBar *menubar = new wxMenuBar;
1287 menubar->Append(menuShape, "&Shape");
1288 menubar->Append(menuClipboard, "&Clipboard");
1289
1290 SetMenuBar(menubar);
1291
1292 SetStatusText("Press Ctrl-S to create a new shape");
1293
1294 SetDropTarget(new DnDShapeDropTarget(this));
1295
1296 m_shape = NULL;
1297
1298 SetBackgroundColour(*wxWHITE);
1299 }
1300
1301 DnDShapeFrame::~DnDShapeFrame()
1302 {
1303 if (m_shape)
1304 delete m_shape;
1305 }
1306
1307 void DnDShapeFrame::SetShape(DnDShape *shape)
1308 {
1309 if (m_shape)
1310 delete m_shape;
1311 m_shape = shape;
1312 Refresh();
1313 }
1314
1315 // callbacks
1316 void DnDShapeFrame::OnDrag(wxMouseEvent& event)
1317 {
1318 if ( !m_shape )
1319 {
1320 event.Skip();
1321
1322 return;
1323 }
1324
1325 // start drag operation
1326 DnDShapeDataObject shapeData(m_shape);
1327 wxDropSource source(shapeData, this);
1328
1329 const char *pc = NULL;
1330 switch ( source.DoDragDrop(TRUE) )
1331 {
1332 default:
1333 case wxDragError:
1334 wxLogError("An error occured during drag and drop operation");
1335 break;
1336
1337 case wxDragNone:
1338 SetStatusText("Nothing happened");
1339 break;
1340
1341 case wxDragCopy:
1342 pc = "copied";
1343 break;
1344
1345 case wxDragMove:
1346 pc = "moved";
1347 if ( ms_lastDropTarget != this )
1348 {
1349 // don't delete the shape if we dropped it on ourselves!
1350 SetShape(NULL);
1351 }
1352 break;
1353
1354 case wxDragCancel:
1355 SetStatusText("Drag and drop operation cancelled");
1356 break;
1357 }
1358
1359 if ( pc )
1360 {
1361 SetStatusText(wxString("Shape successfully ") + pc);
1362 }
1363 //else: status text already set
1364 }
1365
1366 void DnDShapeFrame::OnDrop(wxCoord x, wxCoord y, DnDShape *shape)
1367 {
1368 ms_lastDropTarget = this;
1369
1370 wxPoint pt(x, y);
1371
1372 wxString s;
1373 s.Printf("Shape dropped at (%ld, %ld)", pt.x, pt.y);
1374 SetStatusText(s);
1375
1376 shape->Move(pt);
1377 SetShape(shape);
1378 }
1379
1380 void DnDShapeFrame::OnEditShape(wxCommandEvent& event)
1381 {
1382 DnDShapeDialog dlg(this, m_shape);
1383 if ( dlg.ShowModal() == wxID_OK )
1384 {
1385 SetShape(dlg.GetShape());
1386
1387 if ( m_shape )
1388 {
1389 SetStatusText("You can now drag the shape to another frame");
1390 }
1391 }
1392 }
1393
1394 void DnDShapeFrame::OnNewShape(wxCommandEvent& event)
1395 {
1396 SetShape(new DnDEllipticShape(wxPoint(10, 10), wxSize(80, 60), *wxRED));
1397
1398 SetStatusText("You can now drag the shape to another frame");
1399 }
1400
1401 void DnDShapeFrame::OnClearShape(wxCommandEvent& event)
1402 {
1403 SetShape(NULL);
1404 }
1405
1406 void DnDShapeFrame::OnCopyShape(wxCommandEvent& event)
1407 {
1408 if ( m_shape )
1409 {
1410 wxClipboardLocker clipLocker;
1411 if ( !clipLocker )
1412 {
1413 wxLogError("Can't open the clipboard");
1414
1415 return;
1416 }
1417
1418 wxTheClipboard->AddData(new DnDShapeDataObject(m_shape));
1419 }
1420 }
1421
1422 void DnDShapeFrame::OnPasteShape(wxCommandEvent& event)
1423 {
1424 wxClipboardLocker clipLocker;
1425 if ( !clipLocker )
1426 {
1427 wxLogError("Can't open the clipboard");
1428
1429 return;
1430 }
1431
1432 DnDShapeDataObject shapeDataObject(NULL);
1433 if ( wxTheClipboard->GetData(shapeDataObject) )
1434 {
1435 SetShape(shapeDataObject.GetShape());
1436 }
1437 else
1438 {
1439 wxLogStatus("No shape on the clipboard");
1440 }
1441 }
1442
1443 void DnDShapeFrame::OnUpdateUICopy(wxUpdateUIEvent& event)
1444 {
1445 event.Enable( m_shape != NULL );
1446 }
1447
1448 void DnDShapeFrame::OnUpdateUIPaste(wxUpdateUIEvent& event)
1449 {
1450 event.Enable( wxTheClipboard->IsSupported(wxDataFormat(shapeFormatId)) );
1451 }
1452
1453 void DnDShapeFrame::OnPaint(wxPaintEvent& event)
1454 {
1455 if ( m_shape )
1456 {
1457 wxPaintDC dc(this);
1458
1459 m_shape->Draw(dc);
1460 }
1461 else
1462 {
1463 event.Skip();
1464 }
1465 }
1466
1467 // ----------------------------------------------------------------------------
1468 // DnDShape
1469 // ----------------------------------------------------------------------------
1470
1471 DnDShape *DnDShape::New(const void *buf)
1472 {
1473 const ShapeDump& dump = *(const ShapeDump *)buf;
1474 switch ( dump.k )
1475 {
1476 case Triangle:
1477 return new DnDTriangularShape(wxPoint(dump.x, dump.y),
1478 wxSize(dump.w, dump.h),
1479 wxColour(dump.r, dump.g, dump.b));
1480
1481 case Rectangle:
1482 return new DnDRectangularShape(wxPoint(dump.x, dump.y),
1483 wxSize(dump.w, dump.h),
1484 wxColour(dump.r, dump.g, dump.b));
1485
1486 case Ellipse:
1487 return new DnDEllipticShape(wxPoint(dump.x, dump.y),
1488 wxSize(dump.w, dump.h),
1489 wxColour(dump.r, dump.g, dump.b));
1490
1491 default:
1492 wxFAIL_MSG("invalid shape!");
1493 return NULL;
1494 }
1495 }
1496
1497 // ----------------------------------------------------------------------------
1498 // DnDShapeDataObject
1499 // ----------------------------------------------------------------------------
1500
1501 void DnDShapeDataObject::CreateBitmap() const
1502 {
1503 wxPoint pos = m_shape->GetPosition();
1504 wxSize size = m_shape->GetSize();
1505 int x = pos.x + size.x,
1506 y = pos.y + size.y;
1507 wxBitmap bitmap(x, y);
1508 wxMemoryDC dc;
1509 dc.SelectObject(bitmap);
1510 dc.SetBrush(wxBrush("white", wxSOLID));
1511 dc.Clear();
1512 m_shape->Draw(dc);
1513 dc.SelectObject(wxNullBitmap);
1514
1515 DnDShapeDataObject *self = (DnDShapeDataObject *)this; // const_cast
1516 self->m_dataobj.SetBitmap(bitmap);
1517 self->m_hasBitmap = TRUE;
1518 }
1519
wxWidgets (Impactor)