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Adapted wxGTK to wxMSW's notion of region setting.
[wxWidgets.git] / samples / drawing / drawing.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: drawing.cpp
3 // Purpose: shows and tests wxDC features
4 // Author: Robert Roebling
5 // Modified by:
6 // Created: 04/01/98
7 // RCS-ID: $Id$
8 // Copyright: (c) Robert Roebling
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12 // ============================================================================
13 // declarations
14 // ============================================================================
15
16 // ----------------------------------------------------------------------------
17 // headers
18 // ----------------------------------------------------------------------------
19
20 #ifdef __GNUG__
21 #pragma implementation "drawing.cpp"
22 #pragma interface "drawing.cpp"
23 #endif
24
25 // For compilers that support precompilation, includes "wx/wx.h".
26 #include "wx/wxprec.h"
27
28 #ifdef __BORLANDC__
29 #pragma hdrstop
30 #endif
31
32 // for all others, include the necessary headers (this file is usually all you
33 // need because it includes almost all "standard" wxWindows headers
34 #ifndef WX_PRECOMP
35 #include "wx/wx.h"
36 #endif
37
38 #include "wx/colordlg.h"
39 #include "wx/image.h"
40
41 // ----------------------------------------------------------------------------
42 // ressources
43 // ----------------------------------------------------------------------------
44
45 // the application icon
46 #if defined(__WXGTK__) || defined(__WXMOTIF__)
47 #include "mondrian.xpm"
48 #endif
49
50 // ----------------------------------------------------------------------------
51 // constants
52 // ----------------------------------------------------------------------------
53
54 // what do we show on screen (there are too many shapes to put them all on
55 // screen simultaneously)
56 enum ScreenToShow
57 {
58 Show_Default,
59 Show_Text,
60 Show_Lines,
61 Show_Polygons,
62 Show_Mask,
63 Show_Ops,
64 Show_Regions
65 };
66
67 // ----------------------------------------------------------------------------
68 // global variables
69 // ----------------------------------------------------------------------------
70
71 static wxBitmap gs_bmpNoMask,
72 gs_bmpWithColMask,
73 gs_bmpMask,
74 gs_bmpWithMask,
75 gs_bmp4,
76 gs_bmp36;
77
78 // ----------------------------------------------------------------------------
79 // private classes
80 // ----------------------------------------------------------------------------
81
82 // Define a new application type, each program should derive a class from wxApp
83 class MyApp : public wxApp
84 {
85 public:
86 // override base class virtuals
87 // ----------------------------
88
89 // this one is called on application startup and is a good place for the app
90 // initialization (doing it here and not in the ctor allows to have an error
91 // return: if OnInit() returns false, the application terminates)
92 virtual bool OnInit();
93
94 protected:
95 bool LoadImages();
96 };
97
98 class MyCanvas;
99
100 // Define a new frame type: this is going to be our main frame
101 class MyFrame : public wxFrame
102 {
103 public:
104 // ctor(s)
105 MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size);
106
107 // event handlers (these functions should _not_ be virtual)
108 void OnQuit(wxCommandEvent& event);
109 void OnAbout(wxCommandEvent& event);
110 void OnShow(wxCommandEvent &event);
111 void OnOption(wxCommandEvent &event);
112
113 wxColour SelectColour();
114 void PrepareDC(wxDC& dc);
115
116 int m_backgroundMode;
117 int m_textureBackground;
118 int m_mapMode;
119 double m_xUserScale;
120 double m_yUserScale;
121 int m_xLogicalOrigin;
122 int m_yLogicalOrigin;
123 bool m_xAxisReversed,
124 m_yAxisReversed;
125 wxColour m_colourForeground, // these are _text_ colours
126 m_colourBackground;
127 wxBrush m_backgroundBrush;
128 MyCanvas *m_canvas;
129
130 private:
131 // any class wishing to process wxWindows events must use this macro
132 DECLARE_EVENT_TABLE()
133 };
134
135 // define a scrollable canvas for drawing onto
136 class MyCanvas: public wxScrolledWindow
137 {
138 public:
139 MyCanvas( MyFrame *parent );
140
141 void OnPaint(wxPaintEvent &event);
142 void OnMouseMove(wxMouseEvent &event);
143
144 void Show(ScreenToShow show) { m_show = show; Refresh(); }
145
146 protected:
147 void DrawTestPoly( int x, int y, wxDC &dc ,int transparent );
148 void DrawTestLines( int x, int y, int width, wxDC &dc );
149 void DrawText(wxDC& dc);
150 void DrawImages(wxDC& dc);
151 void DrawWithLogicalOps(wxDC& dc);
152 void DrawRegions(wxDC& dc);
153 void DrawDefault(wxDC& dc);
154
155 private:
156 MyFrame *m_owner;
157
158 ScreenToShow m_show;
159 wxBitmap m_smile_bmp;
160 wxIcon m_std_icon;
161
162 DECLARE_EVENT_TABLE()
163 };
164
165 // ----------------------------------------------------------------------------
166 // constants
167 // ----------------------------------------------------------------------------
168
169 // IDs for the controls and the menu commands
170 enum
171 {
172 // menu items
173 File_Quit = 1,
174 File_About,
175
176 MenuShow_First,
177 File_ShowDefault = MenuShow_First,
178 File_ShowText,
179 File_ShowLines,
180 File_ShowPolygons,
181 File_ShowMask,
182 File_ShowOps,
183 File_ShowRegions,
184 MenuShow_Last = File_ShowRegions,
185
186 MenuOption_First,
187
188 MapMode_Text = MenuOption_First,
189 MapMode_Lometric,
190 MapMode_Twips,
191 MapMode_Points,
192 MapMode_Metric,
193
194 UserScale_StretchHoriz,
195 UserScale_ShrinkHoriz,
196 UserScale_StretchVertic,
197 UserScale_ShrinkVertic,
198 UserScale_Restore,
199
200 AxisMirror_Horiz,
201 AxisMirror_Vertic,
202
203 LogicalOrigin_MoveDown,
204 LogicalOrigin_MoveUp,
205 LogicalOrigin_MoveLeft,
206 LogicalOrigin_MoveRight,
207
208 Colour_TextForeground,
209 Colour_TextBackground,
210 Colour_Background,
211 Colour_BackgroundMode,
212 Colour_TextureBackgound,
213
214 MenuOption_Last = Colour_TextureBackgound
215 };
216
217 // ----------------------------------------------------------------------------
218 // event tables and other macros for wxWindows
219 // ----------------------------------------------------------------------------
220
221
222 // Create a new application object: this macro will allow wxWindows to create
223 // the application object during program execution (it's better than using a
224 // static object for many reasons) and also declares the accessor function
225 // wxGetApp() which will return the reference of the right type (i.e. MyApp and
226 // not wxApp)
227 IMPLEMENT_APP(MyApp)
228
229 // ============================================================================
230 // implementation
231 // ============================================================================
232
233 // ----------------------------------------------------------------------------
234 // the application class
235 // ----------------------------------------------------------------------------
236
237 bool MyApp::LoadImages()
238 {
239 wxPathList pathList;
240 pathList.Add(".");
241 pathList.Add("..");
242
243 wxString path = pathList.FindValidPath("pat4.bmp");
244 if ( !path )
245 return FALSE;
246 gs_bmp4.LoadFile(path, wxBITMAP_TYPE_BMP);
247 wxMask* mask4 = new wxMask(gs_bmp4, *wxBLACK);
248 gs_bmp4.SetMask(mask4);
249
250 path = pathList.FindValidPath("pat36.bmp");
251 if ( !path )
252 return FALSE;
253 gs_bmp36.LoadFile(path, wxBITMAP_TYPE_BMP);
254 wxMask* mask36 = new wxMask(gs_bmp36, *wxBLACK);
255 gs_bmp36.SetMask(mask36);
256
257 path = pathList.FindValidPath("image.bmp");
258 if ( !path )
259 return FALSE;
260 gs_bmpNoMask.LoadFile(path, wxBITMAP_TYPE_BMP);
261 gs_bmpWithMask.LoadFile(path, wxBITMAP_TYPE_BMP);
262 gs_bmpWithColMask.LoadFile(path, wxBITMAP_TYPE_BMP);
263
264 path = pathList.FindValidPath("mask.bmp");
265 if ( !path )
266 return FALSE;
267 gs_bmpMask.LoadFile(path, wxBITMAP_TYPE_BMP);
268
269 // This is so wrong, it hurts.
270 // gs_bmpMask.SetDepth(1);
271 // wxMask *mask = new wxMask(gs_bmpMask);
272
273 wxMask *mask = new wxMask(gs_bmpMask, *wxBLACK);
274 gs_bmpWithMask.SetMask(mask);
275
276 mask = new wxMask(gs_bmpWithColMask, *wxWHITE);
277 gs_bmpWithColMask.SetMask(mask);
278
279 return TRUE;
280 }
281
282 // `Main program' equivalent: the program execution "starts" here
283 bool MyApp::OnInit()
284 {
285 // Create the main application window
286 MyFrame *frame = new MyFrame("Drawing sample",
287 wxPoint(50, 50), wxSize(550, 340));
288
289 // Show it and tell the application that it's our main window
290 frame->Show(TRUE);
291 SetTopWindow(frame);
292
293 if ( !LoadImages() )
294 {
295 wxLogError("Can't load one of the bitmap files needed for this sample "
296 "from the current or parent directory, please copy them "
297 "there.");
298
299 // stop here
300 return FALSE;
301 }
302
303 // ok, continue
304 return TRUE;
305 }
306
307 // ----------------------------------------------------------------------------
308 // MyCanvas
309 // ----------------------------------------------------------------------------
310
311 // the event tables connect the wxWindows events with the functions (event
312 // handlers) which process them.
313 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
314 EVT_PAINT (MyCanvas::OnPaint)
315 EVT_MOTION (MyCanvas::OnMouseMove)
316 END_EVENT_TABLE()
317
318 #include "../image/smile.xpm"
319
320 MyCanvas::MyCanvas( MyFrame *parent ) : wxScrolledWindow( parent )
321 {
322 m_owner = parent;
323 m_show = Show_Default;
324 m_smile_bmp = wxBitmap(smile_xpm);
325 m_std_icon = wxTheApp->GetStdIcon(wxICON_INFORMATION);
326 }
327
328 //draw a polygon and an overlapping rectangle
329 //is transparent is 1, the fill pattern are made transparent
330 //is transparent is 2, the fill pattern are made transparent but inversed
331 //is transparent is 0 the text for and background color will be used to represent/map
332 //the colors of the monochrome bitmap pixels to the fillpattern
333 //
334 //i miss_used the the menu items for setting so called back and fore ground color
335 //just to show how the those colors do influence the fillpatterns
336 //just play with those,
337 //and with the code
338 //variations are endless using other logical functions
339 void MyCanvas::DrawTestPoly( int x, int y,wxDC &dc,int transparent )
340 {
341 wxBrush* brush4 = new wxBrush(gs_bmp4);
342 wxBrush* brush36 = new wxBrush(gs_bmp36);
343
344 wxPoint todraw[5];
345 todraw[0].x=(long)x+100;
346 todraw[0].y=(long)y+100;
347 todraw[1].x=(long)x+300;
348 todraw[1].y=(long)y+100;
349 todraw[2].x=(long)x+300;
350 todraw[2].y=(long)y+300;
351 todraw[3].x=(long)x+150;
352 todraw[3].y=(long)y+350;
353 todraw[4].x=(long)x+100;
354 todraw[4].y=(long)y+300;
355
356 wxPoint todraw2[5];
357 todraw2[0].x=100;
358 todraw2[0].y=100;
359 todraw2[1].x=300;
360 todraw2[1].y=100;
361 todraw2[2].x=300;
362 todraw2[2].y=300;
363 todraw2[3].x=150;
364 todraw2[3].y=350;
365 todraw2[4].x=100;
366 todraw2[4].y=300;
367
368 switch (transparent)
369 {
370 case 0:
371 {
372 dc.SetPen( wxPen( "black", 4, wxSOLID) );
373 dc.SetBrush( *brush4 );
374 dc.SetTextForeground(*wxGREEN);
375 dc.SetTextBackground(m_owner->m_colourForeground);
376 dc.SetLogicalFunction(wxCOPY);
377 dc.DrawPolygon(5,todraw,0,0,wxWINDING_RULE);
378
379 //don't understand hwo but the outline is also depending on logicalfunction
380 dc.SetPen( wxPen( "red", 4, wxSOLID) );
381 dc.SetBrush( *brush36 );
382 dc.SetTextForeground(*wxCYAN);
383 dc.SetTextBackground(m_owner->m_colourBackground);
384 dc.SetLogicalFunction(wxCOPY);
385 dc.DrawRectangle( x+10, y+10, 200, 200 );
386 dc.SetBrush(wxNullBrush);
387 dc.SetPen(wxNullPen);
388 break;
389 }
390 case 1: //now with transparent fillpatterns
391 {
392
393 wxBitmap* bmpBlit = new wxBitmap(600,400);
394 wxMemoryDC* memDC= new wxMemoryDC();
395 // wxBrush _clearbrush(*wxGREEN,wxSOLID);
396 wxBrush _clearbrush(*wxBLACK,wxSOLID);
397 memDC->SelectObject(*bmpBlit);
398 memDC->BeginDrawing();
399 memDC->SetBackground(_clearbrush);
400 memDC->Clear();
401 memDC->SetBackground(wxNullBrush);
402
403 memDC->SetPen( wxPen( "black", 4, wxSOLID) );
404 memDC->SetBrush( wxNullBrush);
405 memDC->SetBrush( *brush4 );
406 memDC->SetTextForeground(*wxBLACK); // 0s --> 0x000000 (black)
407 memDC->SetTextBackground(*wxWHITE); // 1s --> 0xFFFFFF (white)
408 memDC->SetLogicalFunction(wxAND_INVERT);
409
410 // BLACK OUT the opaque pixels and leave the rest as is
411 memDC->DrawPolygon(5,todraw2,0,0,wxWINDING_RULE);
412
413 // Set background and foreground colors for fill pattern
414 //the previous blacked out pixels are now merged with the layer color
415 //while the non blacked out pixels stay as they are.
416 memDC->SetTextForeground(*wxBLACK); // 0s --> 0x000000 (black)
417
418 //now define what will be the color of the fillpattern parts that are not transparent
419 // memDC->SetTextBackground(*wxBLUE);
420 memDC->SetTextBackground(m_owner->m_colourForeground);
421 memDC->SetLogicalFunction(wxOR);
422
423
424 //don't understand how but the outline is also depending on logicalfunction
425 memDC->SetPen( wxPen( "red", 4, wxSOLID) );
426 memDC->DrawPolygon(5,todraw2,0,0,wxWINDING_RULE);
427
428 memDC->SetLogicalFunction(wxCOPY);
429
430 memDC->SetPen( wxPen( "black", 4, wxSOLID) );
431 memDC->SetBrush( wxNullBrush);
432 memDC->SetBrush( *brush36 );
433 memDC->SetTextForeground(*wxBLACK); // 0s --> 0x000000 (black)
434 memDC->SetTextBackground(*wxWHITE); // 1s --> 0xFFFFFF (white)
435 memDC->SetLogicalFunction(wxAND_INVERT);
436
437 memDC->DrawRectangle( 10, 10, 200, 200 );
438
439 // Set background and foreground colors for fill pattern
440 //the previous blacked out pixels are now merged with the layer color
441 //while the non blacked out pixels stay as they are.
442 memDC->SetTextForeground(*wxBLACK); // 0s --> 0x000000 (black)
443 //now define what will be the color of the fillpattern parts that are not transparent
444 // memDC->SetTextBackground(*wxRED);
445 memDC->SetTextBackground(m_owner->m_colourBackground);
446 memDC->SetLogicalFunction(wxOR);
447
448 //don't understand how but the outline is also depending on logicalfunction
449 memDC->SetPen( wxPen( "yellow", 4, wxSOLID) );
450 memDC->DrawRectangle( 10, 10, 200, 200 );
451
452 memDC->SetBrush(wxNullBrush);
453 memDC->SetPen(wxNullPen);
454
455 memDC->EndDrawing();
456 dc.Blit(x,y,600,400,memDC,0,0,wxCOPY);
457 delete bmpBlit;
458 delete memDC;
459 break;
460 }
461 case 2: //now with transparent inversed fillpatterns
462 {
463 wxBitmap* bmpBlit = new wxBitmap(600,400);
464 wxMemoryDC* memDC= new wxMemoryDC();
465 wxBrush _clearbrush(*wxWHITE,wxSOLID);
466 memDC->SelectObject(*bmpBlit);
467 memDC->BeginDrawing();
468 memDC->SetBackground(_clearbrush);
469 memDC->Clear();
470 memDC->SetBackground(wxNullBrush);
471
472 memDC->SetPen( wxPen( "black", 4, wxSOLID) );
473 memDC->SetBrush( *brush4 );
474 memDC->SetTextBackground(*wxBLACK); // 0s --> 0x000000 (black)
475 memDC->SetTextForeground(*wxWHITE); // 1s --> 0xFFFFFF (white)
476 memDC->SetLogicalFunction(wxAND_INVERT);
477
478 // BLACK OUT the opaque pixels and leave the rest as is
479 memDC->DrawPolygon(5,todraw2,0,0,wxWINDING_RULE);
480
481 // Set background and foreground colors for fill pattern
482 //the previous blacked out pixels are now merged with the layer color
483 //while the non blacked out pixels stay as they are.
484 memDC->SetTextBackground(*wxBLACK); // 0s --> 0x000000 (black)
485
486 //now define what will be the color of the fillpattern parts that are not transparent
487 memDC->SetTextForeground(m_owner->m_colourForeground);
488 memDC->SetLogicalFunction(wxOR);
489
490
491 //don't understand how but the outline is also depending on logicalfunction
492 memDC->SetPen( wxPen( "red", 4, wxSOLID) );
493 memDC->DrawPolygon(5,todraw2,0,0,wxWINDING_RULE);
494
495 memDC->SetLogicalFunction(wxCOPY);
496
497 memDC->SetPen( wxPen( "black", 4, wxSOLID) );
498 memDC->SetBrush( *brush36 );
499 memDC->SetTextBackground(*wxBLACK); // 0s --> 0x000000 (black)
500 memDC->SetTextForeground(*wxWHITE); // 1s --> 0xFFFFFF (white)
501 memDC->SetLogicalFunction(wxAND_INVERT);
502
503 memDC->DrawRectangle( 10,10, 200, 200 );
504
505 // Set background and foreground colors for fill pattern
506 //the previous blacked out pixels are now merged with the layer color
507 //while the non blacked out pixels stay as they are.
508 memDC->SetTextBackground(*wxBLACK); // 0s --> 0x000000 (black)
509 //now define what will be the color of the fillpattern parts that are not transparent
510 memDC->SetTextForeground(m_owner->m_colourBackground);
511 memDC->SetLogicalFunction(wxOR);
512
513 //don't understand how but the outline is also depending on logicalfunction
514 memDC->SetPen( wxPen( "yellow", 4, wxSOLID) );
515 memDC->DrawRectangle( 10, 10, 200, 200 );
516
517 memDC->SetBrush(wxNullBrush);
518 memDC->SetPen(wxNullPen);
519 dc.Blit(x,y,600,400,memDC,0,0,wxCOPY);
520 delete bmpBlit;
521 delete memDC;
522 }
523 }
524
525 delete brush4;
526 delete brush36;
527 }
528
529 void MyCanvas::DrawTestLines( int x, int y, int width, wxDC &dc )
530 {
531 dc.SetPen( wxPen( "black", width, wxSOLID) );
532 dc.SetBrush( *wxRED_BRUSH );
533 dc.DrawRectangle( x+10, y+10, 100, 190 );
534
535 dc.SetPen( wxPen( "black", width, wxSOLID) );
536 dc.DrawLine( x+20, y+20, 100, y+20 );
537 dc.SetPen( wxPen( "black", width, wxDOT) );
538 dc.DrawLine( x+20, y+30, 100, y+30 );
539 dc.SetPen( wxPen( "black", width, wxSHORT_DASH) );
540 dc.DrawLine( x+20, y+40, 100, y+40 );
541 dc.SetPen( wxPen( "black", width, wxLONG_DASH) );
542 dc.DrawLine( x+20, y+50, 100, y+50 );
543 dc.SetPen( wxPen( "black", width, wxDOT_DASH) );
544 dc.DrawLine( x+20, y+60, 100, y+60 );
545
546 dc.SetPen( wxPen( "black", width, wxBDIAGONAL_HATCH) );
547 dc.DrawLine( x+20, y+70, 100, y+70 );
548 dc.SetPen( wxPen( "black", width, wxCROSSDIAG_HATCH) );
549 dc.DrawLine( x+20, y+80, 100, y+80 );
550 dc.SetPen( wxPen( "black", width, wxFDIAGONAL_HATCH) );
551 dc.DrawLine( x+20, y+90, 100, y+90 );
552 dc.SetPen( wxPen( "black", width, wxCROSS_HATCH) );
553 dc.DrawLine( x+20, y+100, 100, y+100 );
554 dc.SetPen( wxPen( "black", width, wxHORIZONTAL_HATCH) );
555 dc.DrawLine( x+20, y+110, 100, y+110 );
556 dc.SetPen( wxPen( "black", width, wxVERTICAL_HATCH) );
557 dc.DrawLine( x+20, y+120, 100, y+120 );
558
559 wxPen ud( "black", width, wxUSER_DASH );
560 wxDash dash1[1];
561 dash1[0] = 0;
562 ud.SetDashes( 1, dash1 );
563 dc.DrawLine( x+20, y+140, 100, y+140 );
564 dash1[0] = 1;
565 ud.SetDashes( 1, dash1 );
566 dc.DrawLine( x+20, y+150, 100, y+150 );
567 dash1[0] = 2;
568 ud.SetDashes( 1, dash1 );
569 dc.DrawLine( x+20, y+160, 100, y+160 );
570 dash1[0] = 0xFF;
571 ud.SetDashes( 1, dash1 );
572 dc.DrawLine( x+20, y+170, 100, y+170 );
573 }
574
575 void MyCanvas::DrawDefault(wxDC& dc)
576 {
577 // mark the origin
578 dc.DrawCircle(0, 0, 10);
579 #if !(defined __WXGTK__) && !(defined __WXMOTIF__)
580 // not implemented in wxGTK or wxMOTIF :-(
581 dc.FloodFill(0, 0, wxColour(255, 0, 0));
582 #endif //
583
584 dc.DrawCheckMark(5, 80, 15, 15);
585 dc.DrawCheckMark(25, 80, 30, 30);
586 dc.DrawCheckMark(60, 80, 60, 60);
587
588 // this is the test for "blitting bitmap into DC damages selected brush" bug
589 wxCoord rectSize = m_std_icon.GetWidth() + 10;
590 wxCoord x = 100;
591 dc.SetPen(*wxTRANSPARENT_PEN);
592 dc.SetBrush( *wxGREEN_BRUSH );
593 dc.DrawRectangle(x, 10, rectSize, rectSize);
594 dc.DrawBitmap(m_std_icon, x + 5, 15, TRUE);
595 x += rectSize + 10;
596 dc.DrawRectangle(x, 10, rectSize, rectSize);
597 dc.DrawIcon(m_std_icon, x + 5, 15);
598 x += rectSize + 10;
599 dc.DrawRectangle(x, 10, rectSize, rectSize);
600
601 // test for "transparent" bitmap drawing (it intersects with the last
602 // rectangle above)
603 //dc.SetBrush( *wxTRANSPARENT_BRUSH );
604
605 if (m_smile_bmp.Ok())
606 dc.DrawBitmap(m_smile_bmp, x + rectSize - 20, rectSize - 10, TRUE);
607
608 dc.SetBrush( *wxBLACK_BRUSH );
609 dc.DrawRectangle( 0, 160, 1000, 300 );
610
611 // draw lines
612 wxBitmap bitmap(20,70);
613 wxMemoryDC memdc;
614 memdc.SelectObject( bitmap );
615 memdc.SetBrush( *wxBLACK_BRUSH );
616 memdc.SetPen( *wxWHITE_PEN );
617 memdc.DrawRectangle(0,0,20,70);
618 memdc.DrawLine( 10,0,10,70 );
619
620 // to the right
621 wxPen pen = *wxRED_PEN;
622 memdc.SetPen(pen);
623 memdc.DrawLine( 10, 5,10, 5 );
624 memdc.DrawLine( 10,10,11,10 );
625 memdc.DrawLine( 10,15,12,15 );
626 memdc.DrawLine( 10,20,13,20 );
627
628 /*
629 memdc.SetPen(*wxRED_PEN);
630 memdc.DrawLine( 12, 5,12, 5 );
631 memdc.DrawLine( 12,10,13,10 );
632 memdc.DrawLine( 12,15,14,15 );
633 memdc.DrawLine( 12,20,15,20 );
634 */
635
636 // same to the left
637 memdc.DrawLine( 10,25,10,25 );
638 memdc.DrawLine( 10,30, 9,30 );
639 memdc.DrawLine( 10,35, 8,35 );
640 memdc.DrawLine( 10,40, 7,40 );
641
642 // XOR draw lines
643 dc.SetPen(*wxWHITE_PEN);
644 memdc.SetLogicalFunction( wxINVERT );
645 memdc.SetPen( *wxWHITE_PEN );
646 memdc.DrawLine( 10,50,10,50 );
647 memdc.DrawLine( 10,55,11,55 );
648 memdc.DrawLine( 10,60,12,60 );
649 memdc.DrawLine( 10,65,13,65 );
650
651 memdc.DrawLine( 12,50,12,50 );
652 memdc.DrawLine( 12,55,13,55 );
653 memdc.DrawLine( 12,60,14,60 );
654 memdc.DrawLine( 12,65,15,65 );
655
656 memdc.SelectObject( wxNullBitmap );
657 dc.DrawBitmap( bitmap, 10, 170 );
658 wxImage image( bitmap );
659 image.Rescale( 60,210 );
660 bitmap = image.ConvertToBitmap();
661 dc.DrawBitmap( bitmap, 50, 170 );
662
663 // test the rectangle outline drawing - there should be one pixel between
664 // the rect and the lines
665 dc.SetPen(*wxWHITE_PEN);
666 dc.SetBrush( *wxTRANSPARENT_BRUSH );
667 dc.DrawRectangle(150, 170, 49, 29);
668 dc.DrawRectangle(200, 170, 49, 29);
669 dc.SetPen(*wxWHITE_PEN);
670 dc.DrawLine(250, 210, 250, 170);
671 dc.DrawLine(260, 200, 150, 200);
672
673 // test the rectangle filled drawing - there should be one pixel between
674 // the rect and the lines
675 dc.SetPen(*wxTRANSPARENT_PEN);
676 dc.SetBrush( *wxWHITE_BRUSH );
677 dc.DrawRectangle(300, 170, 49, 29);
678 dc.DrawRectangle(350, 170, 49, 29);
679 dc.SetPen(*wxWHITE_PEN);
680 dc.DrawLine(400, 170, 400, 210);
681 dc.DrawLine(300, 200, 410, 200);
682
683 // a few more tests of this kind
684 dc.SetPen(*wxRED_PEN);
685 dc.SetBrush( *wxWHITE_BRUSH );
686 dc.DrawRectangle(300, 220, 1, 1);
687 dc.DrawRectangle(310, 220, 2, 2);
688 dc.DrawRectangle(320, 220, 3, 3);
689 dc.DrawRectangle(330, 220, 4, 4);
690
691 dc.SetPen(*wxTRANSPARENT_PEN);
692 dc.SetBrush( *wxWHITE_BRUSH );
693 dc.DrawRectangle(300, 230, 1, 1);
694 dc.DrawRectangle(310, 230, 2, 2);
695 dc.DrawRectangle(320, 230, 3, 3);
696 dc.DrawRectangle(330, 230, 4, 4);
697
698 // and now for filled rect with outline
699 dc.SetPen(*wxRED_PEN);
700 dc.SetBrush( *wxWHITE_BRUSH );
701 dc.DrawRectangle(500, 170, 49, 29);
702 dc.DrawRectangle(550, 170, 49, 29);
703 dc.SetPen(*wxWHITE_PEN);
704 dc.DrawLine(600, 170, 600, 210);
705 dc.DrawLine(500, 200, 610, 200);
706
707 // test the rectangle outline drawing - there should be one pixel between
708 // the rect and the lines
709 dc.SetPen(*wxWHITE_PEN);
710 dc.SetBrush( *wxTRANSPARENT_BRUSH );
711 dc.DrawRoundedRectangle(150, 270, 49, 29, 6);
712 dc.DrawRoundedRectangle(200, 270, 49, 29, 6);
713 dc.SetPen(*wxWHITE_PEN);
714 dc.DrawLine(250, 270, 250, 310);
715 dc.DrawLine(150, 300, 260, 300);
716
717 // test the rectangle filled drawing - there should be one pixel between
718 // the rect and the lines
719 dc.SetPen(*wxTRANSPARENT_PEN);
720 dc.SetBrush( *wxWHITE_BRUSH );
721 dc.DrawRoundedRectangle(300, 270, 49, 29, 6);
722 dc.DrawRoundedRectangle(350, 270, 49, 29, 6);
723 dc.SetPen(*wxWHITE_PEN);
724 dc.DrawLine(400, 270, 400, 310);
725 dc.DrawLine(300, 300, 410, 300);
726
727 // Added by JACS to demonstrate bizarre behaviour.
728 // With a size of 70, we get a missing red RHS,
729 // and the hight is too small, so we get yellow
730 // showing. With a size of 40, it draws as expected:
731 // it just shows a white rectangle with red outline.
732 int totalWidth = 70;
733 int totalHeight = 70;
734 wxBitmap bitmap2(totalWidth, totalHeight);
735
736 wxMemoryDC memdc2;
737 memdc2.SelectObject(bitmap2);
738
739 wxBrush yellowBrush(wxColour(255, 255, 0), wxSOLID);
740 memdc2.SetBackground(yellowBrush);
741 memdc2.Clear();
742
743 wxPen yellowPen(wxColour(255, 255, 0), 1, wxSOLID);
744
745 // Now draw a white rectangle with red outline. It should
746 // entirely eclipse the yellow background.
747 memdc2.SetPen(*wxRED_PEN);
748 memdc2.SetBrush(*wxWHITE_BRUSH);
749
750 memdc2.DrawRectangle(0, 0, totalWidth, totalHeight);
751
752 memdc2.SetPen(wxNullPen);
753 memdc2.SetBrush(wxNullBrush);
754 memdc2.SelectObject(wxNullBitmap);
755
756 dc.DrawBitmap(bitmap2, 500, 270);
757
758 // Repeat, but draw directly on dc
759 // Draw a yellow rectangle filling the bitmap
760
761 x = 600; int y = 270;
762 dc.SetPen(yellowPen);
763 dc.SetBrush(yellowBrush);
764 dc.DrawRectangle(x, y, totalWidth, totalHeight);
765
766 // Now draw a white rectangle with red outline. It should
767 // entirely eclipse the yellow background.
768 dc.SetPen(*wxRED_PEN);
769 dc.SetBrush(*wxWHITE_BRUSH);
770
771 dc.DrawRectangle(x, y, totalWidth, totalHeight);
772 }
773
774 void MyCanvas::DrawText(wxDC& dc)
775 {
776 // set underlined font for testing
777 dc.SetFont( wxFont(12, wxMODERN, wxNORMAL, wxNORMAL, TRUE) );
778 dc.DrawText( "This is text", 110, 10 );
779 dc.DrawRotatedText( "That is text", 20, 10, -45 );
780
781 dc.SetFont( *wxNORMAL_FONT );
782
783 wxString text;
784 dc. SetBackgroundMode(wxTRANSPARENT);
785
786 for ( int n = -180; n < 180; n += 30 )
787 {
788 text.Printf(" %d rotated text", n);
789 dc.DrawRotatedText(text , 400, 400, n);
790 }
791
792 dc.SetFont( wxFont( 18, wxSWISS, wxNORMAL, wxNORMAL ) );
793
794 dc.DrawText( "This is Swiss 18pt text.", 110, 40 );
795
796 long length;
797 long height;
798 long descent;
799 dc.GetTextExtent( "This is Swiss 18pt text.", &length, &height, &descent );
800 text.Printf( "Dimensions are length %ld, height %ld, descent %ld", length, height, descent );
801 dc.DrawText( text, 110, 80 );
802
803 text.Printf( "CharHeight() returns: %d", dc.GetCharHeight() );
804 dc.DrawText( text, 110, 120 );
805
806 dc.DrawRectangle( 100, 40, 4, height );
807 }
808
809 static const struct
810 {
811 const wxChar *name;
812 int rop;
813 } rasterOperations[] =
814 {
815 { "wxAND", wxAND },
816 { "wxAND_INVERT", wxAND_INVERT },
817 { "wxAND_REVERSE", wxAND_REVERSE },
818 { "wxCLEAR", wxCLEAR },
819 { "wxCOPY", wxCOPY },
820 { "wxEQUIV", wxEQUIV },
821 { "wxINVERT", wxINVERT },
822 { "wxNAND", wxNAND },
823 { "wxNO_OP", wxNO_OP },
824 { "wxOR", wxOR },
825 { "wxOR_INVERT", wxOR_INVERT },
826 { "wxOR_REVERSE", wxOR_REVERSE },
827 { "wxSET", wxSET },
828 { "wxSRC_INVERT", wxSRC_INVERT },
829 { "wxXOR", wxXOR },
830 };
831
832 void MyCanvas::DrawImages(wxDC& dc)
833 {
834 dc.DrawText("original image", 0, 0);
835 dc.DrawBitmap(gs_bmpNoMask, 0, 20, 0);
836 dc.DrawText("with colour mask", 0, 100);
837 dc.DrawBitmap(gs_bmpWithColMask, 0, 120, TRUE);
838 dc.DrawText("the mask image", 0, 200);
839 dc.DrawBitmap(gs_bmpMask, 0, 220, 0);
840 dc.DrawText("masked image", 0, 300);
841 dc.DrawBitmap(gs_bmpWithMask, 0, 320, TRUE);
842
843 int cx = gs_bmpWithColMask.GetWidth(),
844 cy = gs_bmpWithColMask.GetHeight();
845
846 wxMemoryDC memDC;
847 for ( size_t n = 0; n < WXSIZEOF(rasterOperations); n++ )
848 {
849 wxCoord x = 120 + 150*(n%4),
850 y = 20 + 100*(n/4);
851
852 dc.DrawText(rasterOperations[n].name, x, y - 20);
853 memDC.SelectObject(gs_bmpWithColMask);
854 dc.Blit(x, y, cx, cy, &memDC, 0, 0, rasterOperations[n].rop, TRUE);
855 }
856 }
857
858 void MyCanvas::DrawWithLogicalOps(wxDC& dc)
859 {
860 static const wxCoord w = 60;
861 static const wxCoord h = 60;
862
863 // reuse the text colour here
864 dc.SetPen(wxPen(m_owner->m_colourForeground, 1, wxSOLID));
865 dc.SetBrush(*wxTRANSPARENT_BRUSH);
866
867 size_t n;
868 for ( n = 0; n < WXSIZEOF(rasterOperations); n++ )
869 {
870 wxCoord x = 20 + 150*(n%4),
871 y = 20 + 100*(n/4);
872
873 dc.DrawText(rasterOperations[n].name, x, y - 20);
874 dc.SetLogicalFunction(rasterOperations[n].rop);
875 dc.DrawRectangle(x, y, w, h);
876 dc.DrawLine(x, y, x + w, y + h);
877 dc.DrawLine(x + w, y, x, y + h);
878 }
879
880 // now some filled rectangles
881 dc.SetBrush(wxBrush(m_owner->m_colourForeground, wxSOLID));
882
883 for ( n = 0; n < WXSIZEOF(rasterOperations); n++ )
884 {
885 wxCoord x = 20 + 150*(n%4),
886 y = 500 + 100*(n/4);
887
888 dc.DrawText(rasterOperations[n].name, x, y - 20);
889 dc.SetLogicalFunction(rasterOperations[n].rop);
890 dc.DrawRectangle(x, y, w, h);
891 }
892 }
893
894 void MyCanvas::DrawRegions(wxDC& dc)
895 {
896 dc.SetBrush( *wxWHITE_BRUSH );
897 dc.SetPen( *wxTRANSPARENT_PEN );
898 dc.DrawRectangle( 10,10,310,310 );
899
900 dc.SetClippingRegion( 20,20,100,270 );
901
902 dc.SetBrush( *wxRED_BRUSH );
903 dc.DrawRectangle( 10,10,310,310 );
904
905 dc.SetClippingRegion( 20,20,100,100 );
906
907 dc.SetBrush( *wxCYAN_BRUSH );
908 dc.DrawRectangle( 10,10,310,310 );
909
910 dc.DestroyClippingRegion();
911 dc.SetClippingRegion( 120,30,100,270 );
912
913 dc.SetBrush( *wxGREY_BRUSH );
914 dc.DrawRectangle( 10,10,310,310 );
915
916 if (m_smile_bmp.Ok())
917 {
918 dc.DrawBitmap( m_smile_bmp, 140, 20, TRUE );
919 dc.DrawBitmap( m_smile_bmp, 140, 290, TRUE );
920 dc.DrawBitmap( m_smile_bmp, 110, 80, TRUE );
921 dc.DrawBitmap( m_smile_bmp, 210, 80, TRUE );
922 }
923 }
924
925 void MyCanvas::OnPaint(wxPaintEvent &WXUNUSED(event))
926 {
927 wxPaintDC dc(this);
928 PrepareDC(dc);
929 m_owner->PrepareDC(dc);
930
931 dc.SetBackgroundMode( m_owner->m_backgroundMode );
932 if ( m_owner->m_backgroundBrush.Ok() )
933 dc.SetBackground( m_owner->m_backgroundBrush );
934 if ( m_owner->m_colourForeground.Ok() )
935 dc.SetTextForeground( m_owner->m_colourForeground );
936 if ( m_owner->m_colourBackground.Ok() )
937 dc.SetTextBackground( m_owner->m_colourBackground );
938
939 if ( m_owner->m_textureBackground) {
940 if ( ! m_owner->m_backgroundBrush.Ok() ) {
941 wxBrush b(wxColour(0,128,0), wxSOLID);
942 dc.SetBackground(b);
943 }
944 }
945
946 // dc.Clear();
947
948 if ( m_owner->m_textureBackground) {
949 dc.SetPen(*wxMEDIUM_GREY_PEN);
950 for (int i=0; i<200; i++)
951 dc.DrawLine(0, i*10, i*10, 0);
952 }
953
954 switch ( m_show )
955 {
956 case Show_Default:
957 DrawDefault(dc);
958 break;
959
960 case Show_Regions:
961 DrawRegions(dc);
962 break;
963
964 case Show_Text:
965 DrawText(dc);
966 break;
967
968 case Show_Lines:
969 DrawTestLines( 0, 100, 0, dc );
970 DrawTestLines( 0, 300, 1, dc );
971 DrawTestLines( 0, 500, 2, dc );
972 DrawTestLines( 0, 700, 6, dc );
973 break;
974
975 case Show_Polygons:
976 DrawTestPoly( 0, 100, dc, 0 );
977 DrawTestPoly( 33, 500, dc, 1 );
978 DrawTestPoly( 43, 1000, dc, 2 );
979 break;
980
981 case Show_Mask:
982 DrawImages(dc);
983 break;
984
985 case Show_Ops:
986 DrawWithLogicalOps(dc);
987 break;
988 }
989 }
990
991 void MyCanvas::OnMouseMove(wxMouseEvent &event)
992 {
993 wxClientDC dc(this);
994 PrepareDC(dc);
995 m_owner->PrepareDC(dc);
996
997 wxPoint pos = event.GetPosition();
998 long x = dc.DeviceToLogicalX( pos.x );
999 long y = dc.DeviceToLogicalY( pos.y );
1000 wxString str;
1001 str.Printf( "Current mouse position: %d,%d", (int)x, (int)y );
1002 m_owner->SetStatusText( str );
1003 }
1004
1005 // ----------------------------------------------------------------------------
1006 // MyFrame
1007 // ----------------------------------------------------------------------------
1008
1009 // the event tables connect the wxWindows events with the functions (event
1010 // handlers) which process them. It can be also done at run-time, but for the
1011 // simple menu events like this the static method is much simpler.
1012 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
1013 EVT_MENU (File_Quit, MyFrame::OnQuit)
1014 EVT_MENU (File_About, MyFrame::OnAbout)
1015
1016 EVT_MENU_RANGE(MenuShow_First, MenuShow_Last, MyFrame::OnShow)
1017
1018 EVT_MENU_RANGE(MenuOption_First, MenuOption_Last, MyFrame::OnOption)
1019 END_EVENT_TABLE()
1020
1021 // frame constructor
1022 MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
1023 : wxFrame((wxFrame *)NULL, -1, title, pos, size)
1024 {
1025 // set the frame icon
1026 SetIcon(wxICON(mondrian));
1027
1028 wxMenu *menuFile = new wxMenu;
1029 menuFile->Append(File_ShowDefault, "&Default screen\tF1");
1030 menuFile->Append(File_ShowText, "&Text screen\tF2");
1031 menuFile->Append(File_ShowLines, "&Lines screen\tF3");
1032 menuFile->Append(File_ShowPolygons, "&Polygons screen\tF4");
1033 menuFile->Append(File_ShowMask, "wx&Mask screen\tF5");
1034 menuFile->Append(File_ShowOps, "&ROP screen\tF6");
1035 menuFile->Append(File_ShowRegions, "Re&gions screen\tF6");
1036 menuFile->AppendSeparator();
1037 menuFile->Append(File_About, "&About...\tCtrl-A", "Show about dialog");
1038 menuFile->AppendSeparator();
1039 menuFile->Append(File_Quit, "E&xit\tAlt-X", "Quit this program");
1040
1041 wxMenu *menuMapMode = new wxMenu;
1042 menuMapMode->Append( MapMode_Text, "&TEXT map mode" );
1043 menuMapMode->Append( MapMode_Lometric, "&LOMETRIC map mode" );
1044 menuMapMode->Append( MapMode_Twips, "T&WIPS map mode" );
1045 menuMapMode->Append( MapMode_Points, "&POINTS map mode" );
1046 menuMapMode->Append( MapMode_Metric, "&METRIC map mode" );
1047
1048 wxMenu *menuUserScale = new wxMenu;
1049 menuUserScale->Append( UserScale_StretchHoriz, "Stretch horizontally\tCtrl-H" );
1050 menuUserScale->Append( UserScale_ShrinkHoriz, "Shrink horizontally\tCtrl-G" );
1051 menuUserScale->Append( UserScale_StretchVertic, "Stretch vertically\tCtrl-V" );
1052 menuUserScale->Append( UserScale_ShrinkVertic, "Shrink vertically\tCtrl-W" );
1053 menuUserScale->AppendSeparator();
1054 menuUserScale->Append( UserScale_Restore, "Restore to normal\tCtrl-0" );
1055
1056 wxMenu *menuAxis = new wxMenu;
1057 menuAxis->Append( AxisMirror_Horiz, "Mirror horizontally\tCtrl-M", "", TRUE );
1058 menuAxis->Append( AxisMirror_Vertic, "Mirror vertically\tCtrl-N", "", TRUE );
1059
1060 wxMenu *menuLogical = new wxMenu;
1061 menuLogical->Append( LogicalOrigin_MoveDown, "Move &down\tCtrl-D" );
1062 menuLogical->Append( LogicalOrigin_MoveUp, "Move &up\tCtrl-U" );
1063 menuLogical->Append( LogicalOrigin_MoveLeft, "Move &right\tCtrl-L" );
1064 menuLogical->Append( LogicalOrigin_MoveRight, "Move &left\tCtrl-R" );
1065
1066 wxMenu *menuColour = new wxMenu;
1067 menuColour->Append( Colour_TextForeground, "Text foreground..." );
1068 menuColour->Append( Colour_TextBackground, "Text background..." );
1069 menuColour->Append( Colour_Background, "Background colour..." );
1070 menuColour->Append( Colour_BackgroundMode, "Opaque/transparent\tCtrl-B", "", TRUE );
1071 menuColour->Append( Colour_TextureBackgound, "Draw textured background\tCtrl-T", "", TRUE);
1072
1073 // now append the freshly created menu to the menu bar...
1074 wxMenuBar *menuBar = new wxMenuBar;
1075 menuBar->Append(menuFile, "&File");
1076 menuBar->Append(menuMapMode, "&MapMode");
1077 menuBar->Append(menuUserScale, "&UserScale");
1078 menuBar->Append(menuAxis, "&Axis");
1079 menuBar->Append(menuLogical, "&LogicalOrigin");
1080 menuBar->Append(menuColour, "&Colours");
1081
1082 // ... and attach this menu bar to the frame
1083 SetMenuBar(menuBar);
1084
1085 // create a status bar just for fun (by default with 1 pane only)
1086 CreateStatusBar(2);
1087 SetStatusText("Welcome to wxWindows!");
1088
1089 m_mapMode = wxMM_TEXT;
1090 m_xUserScale = 1.0;
1091 m_yUserScale = 1.0;
1092 m_xLogicalOrigin = 0;
1093 m_yLogicalOrigin = 0;
1094 m_xAxisReversed =
1095 m_yAxisReversed = FALSE;
1096 m_backgroundMode = wxSOLID;
1097 m_colourForeground = *wxRED;
1098 m_colourBackground = *wxBLUE;
1099 m_textureBackground = FALSE;
1100
1101 m_canvas = new MyCanvas( this );
1102 m_canvas->SetScrollbars( 10, 10, 100, 240 );
1103 }
1104
1105 // event handlers
1106
1107 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
1108 {
1109 // TRUE is to force the frame to close
1110 Close(TRUE);
1111 }
1112
1113 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
1114 {
1115 wxString msg;
1116 msg.Printf( wxT("This is the about dialog of the drawing sample.\n")
1117 wxT("This sample tests various primitive drawing functions\n")
1118 wxT("without any tests to prevent flicker.\n")
1119 wxT("Copyright (c) Robert Roebling 1999")
1120 );
1121
1122 wxMessageBox(msg, "About Drawing", wxOK | wxICON_INFORMATION, this);
1123 }
1124
1125 void MyFrame::OnShow(wxCommandEvent& event)
1126 {
1127 m_canvas->Show((ScreenToShow)(event.GetInt() - MenuShow_First));
1128 }
1129
1130 void MyFrame::OnOption(wxCommandEvent& event)
1131 {
1132 switch (event.GetInt())
1133 {
1134 case MapMode_Text:
1135 m_mapMode = wxMM_TEXT;
1136 break;
1137 case MapMode_Lometric:
1138 m_mapMode = wxMM_LOMETRIC;
1139 break;
1140 case MapMode_Twips:
1141 m_mapMode = wxMM_TWIPS;
1142 break;
1143 case MapMode_Points:
1144 m_mapMode = wxMM_POINTS;
1145 break;
1146 case MapMode_Metric:
1147 m_mapMode = wxMM_METRIC;
1148 break;
1149
1150 case LogicalOrigin_MoveDown:
1151 m_yLogicalOrigin += 10;
1152 break;
1153 case LogicalOrigin_MoveUp:
1154 m_yLogicalOrigin -= 10;
1155 break;
1156 case LogicalOrigin_MoveLeft:
1157 m_xLogicalOrigin += 10;
1158 break;
1159 case LogicalOrigin_MoveRight:
1160 m_xLogicalOrigin -= 10;
1161 break;
1162
1163 case UserScale_StretchHoriz:
1164 m_xUserScale *= 1.10;
1165 break;
1166 case UserScale_ShrinkHoriz:
1167 m_xUserScale /= 1.10;
1168 break;
1169 case UserScale_StretchVertic:
1170 m_yUserScale *= 1.10;
1171 break;
1172 case UserScale_ShrinkVertic:
1173 m_yUserScale /= 1.10;
1174 break;
1175 case UserScale_Restore:
1176 m_xUserScale =
1177 m_yUserScale = 1.0;
1178 break;
1179
1180 case AxisMirror_Vertic:
1181 m_yAxisReversed = !m_yAxisReversed;
1182 break;
1183 case AxisMirror_Horiz:
1184 m_xAxisReversed = !m_xAxisReversed;
1185 break;
1186
1187 case Colour_TextForeground:
1188 m_colourForeground = SelectColour();
1189 break;
1190 case Colour_TextBackground:
1191 m_colourBackground = SelectColour();
1192 break;
1193 case Colour_Background:
1194 {
1195 wxColour col = SelectColour();
1196 if ( col.Ok() )
1197 {
1198 m_backgroundBrush.SetColour(col);
1199 }
1200 }
1201 break;
1202 case Colour_BackgroundMode:
1203 m_backgroundMode = m_backgroundMode == wxSOLID ? wxTRANSPARENT
1204 : wxSOLID;
1205 break;
1206
1207 case Colour_TextureBackgound:
1208 m_textureBackground = ! m_textureBackground;
1209 break;
1210
1211 default:
1212 // skip Refresh()
1213 return;
1214 }
1215
1216 m_canvas->Refresh();
1217 }
1218
1219 void MyFrame::PrepareDC(wxDC& dc)
1220 {
1221 dc.SetMapMode( m_mapMode );
1222 dc.SetUserScale( m_xUserScale, m_yUserScale );
1223 dc.SetLogicalOrigin( m_xLogicalOrigin, m_yLogicalOrigin );
1224 dc.SetAxisOrientation( !m_xAxisReversed, m_yAxisReversed );
1225 }
1226
1227 wxColour MyFrame::SelectColour()
1228 {
1229 wxColour col;
1230 wxColourData data;
1231 wxColourDialog dialog(this, &data);
1232
1233 if ( dialog.ShowModal() == wxID_OK )
1234 {
1235 col = dialog.GetColourData().GetColour();
1236 }
1237
1238 return col;
1239 }
wxWidgets (Impactor)