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Some more drawing things,
[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_bmp4_mono,
77 gs_bmp36;
78
79 // ----------------------------------------------------------------------------
80 // private classes
81 // ----------------------------------------------------------------------------
82
83 // Define a new application type, each program should derive a class from wxApp
84 class MyApp : public wxApp
85 {
86 public:
87 // override base class virtuals
88 // ----------------------------
89
90 // this one is called on application startup and is a good place for the app
91 // initialization (doing it here and not in the ctor allows to have an error
92 // return: if OnInit() returns false, the application terminates)
93 virtual bool OnInit();
94
95 protected:
96 bool LoadImages();
97 };
98
99 class MyCanvas;
100
101 // Define a new frame type: this is going to be our main frame
102 class MyFrame : public wxFrame
103 {
104 public:
105 // ctor(s)
106 MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size);
107
108 // event handlers (these functions should _not_ be virtual)
109 void OnQuit(wxCommandEvent& event);
110 void OnAbout(wxCommandEvent& event);
111 void OnShow(wxCommandEvent &event);
112 void OnOption(wxCommandEvent &event);
113
114 wxColour SelectColour();
115 void PrepareDC(wxDC& dc);
116
117 int m_backgroundMode;
118 int m_textureBackground;
119 int m_mapMode;
120 double m_xUserScale;
121 double m_yUserScale;
122 int m_xLogicalOrigin;
123 int m_yLogicalOrigin;
124 bool m_xAxisReversed,
125 m_yAxisReversed;
126 wxColour m_colourForeground, // these are _text_ colours
127 m_colourBackground;
128 wxBrush m_backgroundBrush;
129 MyCanvas *m_canvas;
130
131 private:
132 // any class wishing to process wxWindows events must use this macro
133 DECLARE_EVENT_TABLE()
134 };
135
136 // define a scrollable canvas for drawing onto
137 class MyCanvas: public wxScrolledWindow
138 {
139 public:
140 MyCanvas( MyFrame *parent );
141
142 void OnPaint(wxPaintEvent &event);
143 void OnMouseMove(wxMouseEvent &event);
144
145 void Show(ScreenToShow show) { m_show = show; Refresh(); }
146
147 protected:
148 void DrawTestPoly( int x, int y, wxDC &dc ,int transparent );
149 void DrawTestLines( int x, int y, int width, wxDC &dc );
150 void DrawText(wxDC& dc);
151 void DrawImages(wxDC& dc);
152 void DrawWithLogicalOps(wxDC& dc);
153 void DrawRegions(wxDC& dc);
154 void DrawDefault(wxDC& dc);
155
156 private:
157 MyFrame *m_owner;
158
159 ScreenToShow m_show;
160 wxBitmap m_smile_bmp;
161 wxIcon m_std_icon;
162
163 DECLARE_EVENT_TABLE()
164 };
165
166 // ----------------------------------------------------------------------------
167 // constants
168 // ----------------------------------------------------------------------------
169
170 // IDs for the controls and the menu commands
171 enum
172 {
173 // menu items
174 File_Quit = 1,
175 File_About,
176
177 MenuShow_First,
178 File_ShowDefault = MenuShow_First,
179 File_ShowText,
180 File_ShowLines,
181 File_ShowPolygons,
182 File_ShowMask,
183 File_ShowOps,
184 File_ShowRegions,
185 MenuShow_Last = File_ShowRegions,
186
187 MenuOption_First,
188
189 MapMode_Text = MenuOption_First,
190 MapMode_Lometric,
191 MapMode_Twips,
192 MapMode_Points,
193 MapMode_Metric,
194
195 UserScale_StretchHoriz,
196 UserScale_ShrinkHoriz,
197 UserScale_StretchVertic,
198 UserScale_ShrinkVertic,
199 UserScale_Restore,
200
201 AxisMirror_Horiz,
202 AxisMirror_Vertic,
203
204 LogicalOrigin_MoveDown,
205 LogicalOrigin_MoveUp,
206 LogicalOrigin_MoveLeft,
207 LogicalOrigin_MoveRight,
208
209 Colour_TextForeground,
210 Colour_TextBackground,
211 Colour_Background,
212 Colour_BackgroundMode,
213 Colour_TextureBackgound,
214
215 MenuOption_Last = Colour_TextureBackgound
216 };
217
218 // ----------------------------------------------------------------------------
219 // event tables and other macros for wxWindows
220 // ----------------------------------------------------------------------------
221
222
223 // Create a new application object: this macro will allow wxWindows to create
224 // the application object during program execution (it's better than using a
225 // static object for many reasons) and also declares the accessor function
226 // wxGetApp() which will return the reference of the right type (i.e. MyApp and
227 // not wxApp)
228 IMPLEMENT_APP(MyApp)
229
230 // ============================================================================
231 // implementation
232 // ============================================================================
233
234 // ----------------------------------------------------------------------------
235 // the application class
236 // ----------------------------------------------------------------------------
237
238 bool MyApp::LoadImages()
239 {
240 wxPathList pathList;
241 pathList.Add(".");
242 pathList.Add("..");
243
244 wxString path = pathList.FindValidPath("pat4.bmp");
245 if ( !path )
246 return FALSE;
247 /* 4 colour bitmap */
248 gs_bmp4.LoadFile(path, wxBITMAP_TYPE_BMP);
249 /* turn into mono-bitmap */
250 gs_bmp4_mono.LoadFile(path, wxBITMAP_TYPE_BMP);
251 wxMask* mask4 = new wxMask(gs_bmp4_mono, *wxBLACK);
252 gs_bmp4_mono.SetMask(mask4);
253
254 path = pathList.FindValidPath("pat36.bmp");
255 if ( !path )
256 return FALSE;
257 gs_bmp36.LoadFile(path, wxBITMAP_TYPE_BMP);
258 wxMask* mask36 = new wxMask(gs_bmp36, *wxBLACK);
259 gs_bmp36.SetMask(mask36);
260
261 path = pathList.FindValidPath("image.bmp");
262 if ( !path )
263 return FALSE;
264 gs_bmpNoMask.LoadFile(path, wxBITMAP_TYPE_BMP);
265 gs_bmpWithMask.LoadFile(path, wxBITMAP_TYPE_BMP);
266 gs_bmpWithColMask.LoadFile(path, wxBITMAP_TYPE_BMP);
267
268 path = pathList.FindValidPath("mask.bmp");
269 if ( !path )
270 return FALSE;
271 gs_bmpMask.LoadFile(path, wxBITMAP_TYPE_BMP);
272
273 // This is so wrong, it hurts.
274 // gs_bmpMask.SetDepth(1);
275 // wxMask *mask = new wxMask(gs_bmpMask);
276
277 wxMask *mask = new wxMask(gs_bmpMask, *wxBLACK);
278 gs_bmpWithMask.SetMask(mask);
279
280 mask = new wxMask(gs_bmpWithColMask, *wxWHITE);
281 gs_bmpWithColMask.SetMask(mask);
282
283 return TRUE;
284 }
285
286 // `Main program' equivalent: the program execution "starts" here
287 bool MyApp::OnInit()
288 {
289 // Create the main application window
290 MyFrame *frame = new MyFrame("Drawing sample",
291 wxPoint(50, 50), wxSize(550, 340));
292
293 // Show it and tell the application that it's our main window
294 frame->Show(TRUE);
295 SetTopWindow(frame);
296
297 if ( !LoadImages() )
298 {
299 wxLogError("Can't load one of the bitmap files needed for this sample "
300 "from the current or parent directory, please copy them "
301 "there.");
302
303 // stop here
304 return FALSE;
305 }
306
307 // ok, continue
308 return TRUE;
309 }
310
311 // ----------------------------------------------------------------------------
312 // MyCanvas
313 // ----------------------------------------------------------------------------
314
315 // the event tables connect the wxWindows events with the functions (event
316 // handlers) which process them.
317 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
318 EVT_PAINT (MyCanvas::OnPaint)
319 EVT_MOTION (MyCanvas::OnMouseMove)
320 END_EVENT_TABLE()
321
322 #include "../image/smile.xpm"
323
324 MyCanvas::MyCanvas( MyFrame *parent ) : wxScrolledWindow( parent )
325 {
326 m_owner = parent;
327 m_show = Show_Default;
328 m_smile_bmp = wxBitmap(smile_xpm);
329 m_std_icon = wxTheApp->GetStdIcon(wxICON_INFORMATION);
330 }
331
332 // Draw a polygon and an overlapping rectangle
333 // If transparent is 1, the fill pattern is made transparent.
334 // If transparent is 2, the fill pattern is made transparent but inversed
335 // If is transparent is 0 the text for and background color will be used to represent/map
336 // the colors of the monochrome bitmap pixels to the fillpattern
337 //
338 // I abused the the menu items for setting so called back and fore ground color
339 // just to show how the those colors do influence the fillpatterns just play
340 // with those, and with the code variations are endless using other logical
341 // functions.
342
343 void MyCanvas::DrawTestPoly( int x, int y,wxDC &dc,int transparent )
344 {
345 wxBrush* brush4 = new wxBrush(gs_bmp4);
346 wxBrush* brush4_mono = new wxBrush(gs_bmp4_mono);
347 wxBrush* brush36 = new wxBrush(gs_bmp36);
348
349 wxPoint todraw[5];
350 todraw[0].x=(long)x+100;
351 todraw[0].y=(long)y+100;
352 todraw[1].x=(long)x+300;
353 todraw[1].y=(long)y+100;
354 todraw[2].x=(long)x+300;
355 todraw[2].y=(long)y+300;
356 todraw[3].x=(long)x+150;
357 todraw[3].y=(long)y+350;
358 todraw[4].x=(long)x+100;
359 todraw[4].y=(long)y+300;
360
361 wxPoint todraw2[5];
362 todraw2[0].x=100;
363 todraw2[0].y=100;
364 todraw2[1].x=300;
365 todraw2[1].y=100;
366 todraw2[2].x=300;
367 todraw2[2].y=300;
368 todraw2[3].x=150;
369 todraw2[3].y=350;
370 todraw2[4].x=100;
371 todraw2[4].y=300;
372
373 switch (transparent)
374 {
375 case 0:
376 {
377 dc.SetLogicalFunction(wxCOPY);
378
379 dc.SetPen( wxPen( "black", 4, wxSOLID) );
380 dc.SetBrush( *brush4 );
381 dc.DrawPolygon(5,todraw,0,0,wxWINDING_RULE);
382
383 dc.SetPen( wxPen( "red", 4, wxSOLID) );
384 dc.SetBrush( *brush36 );
385 dc.SetTextForeground(*wxCYAN);
386 dc.SetTextBackground(m_owner->m_colourBackground);
387 dc.DrawRectangle( x+10, y+10, 200, 200 );
388
389 dc.SetPen( wxPen( "green", 4, wxSOLID) );
390 dc.SetBrush( *brush4_mono );
391 dc.SetTextForeground(*wxCYAN);
392 dc.SetTextBackground(m_owner->m_colourBackground);
393 dc.DrawRectangle( x+50, y+50, 200, 200 );
394
395 dc.DrawCircle( x+400, y+50, 130 );
396
397 dc.SetBrush(wxNullBrush);
398 dc.SetPen(wxNullPen);
399 break;
400 }
401 case 1: //now with transparent fillpatterns
402 {
403
404 wxBitmap* bmpBlit = new wxBitmap(600,400);
405 wxMemoryDC* memDC= new wxMemoryDC();
406 // wxBrush _clearbrush(*wxGREEN,wxSOLID);
407 wxBrush _clearbrush(*wxBLACK,wxSOLID);
408 memDC->SelectObject(*bmpBlit);
409 memDC->BeginDrawing();
410 memDC->SetBackground(_clearbrush);
411 memDC->Clear();
412 memDC->SetBackground(wxNullBrush);
413
414 memDC->SetPen( wxPen( "black", 4, wxSOLID) );
415 memDC->SetBrush( wxNullBrush);
416 memDC->SetBrush( *brush4 );
417 memDC->SetTextForeground(*wxBLACK); // 0s --> 0x000000 (black)
418 memDC->SetTextBackground(*wxWHITE); // 1s --> 0xFFFFFF (white)
419 memDC->SetLogicalFunction(wxAND_INVERT);
420
421 // BLACK OUT the opaque pixels and leave the rest as is
422 memDC->DrawPolygon(5,todraw2,0,0,wxWINDING_RULE);
423
424 // Set background and foreground colors for fill pattern
425 //the previous blacked out pixels are now merged with the layer color
426 //while the non blacked out pixels stay as they are.
427 memDC->SetTextForeground(*wxBLACK); // 0s --> 0x000000 (black)
428
429 //now define what will be the color of the fillpattern parts that are not transparent
430 // memDC->SetTextBackground(*wxBLUE);
431 memDC->SetTextBackground(m_owner->m_colourForeground);
432 memDC->SetLogicalFunction(wxOR);
433
434
435 //don't understand how but the outline is also depending on logicalfunction
436 memDC->SetPen( wxPen( "red", 4, wxSOLID) );
437 memDC->DrawPolygon(5,todraw2,0,0,wxWINDING_RULE);
438
439 memDC->SetLogicalFunction(wxCOPY);
440
441 memDC->SetPen( wxPen( "black", 4, wxSOLID) );
442 memDC->SetBrush( wxNullBrush);
443 memDC->SetBrush( *brush36 );
444 memDC->SetTextForeground(*wxBLACK); // 0s --> 0x000000 (black)
445 memDC->SetTextBackground(*wxWHITE); // 1s --> 0xFFFFFF (white)
446 memDC->SetLogicalFunction(wxAND_INVERT);
447
448 memDC->DrawRectangle( 10, 10, 200, 200 );
449
450 // Set background and foreground colors for fill pattern
451 //the previous blacked out pixels are now merged with the layer color
452 //while the non blacked out pixels stay as they are.
453 memDC->SetTextForeground(*wxBLACK); // 0s --> 0x000000 (black)
454 //now define what will be the color of the fillpattern parts that are not transparent
455 // memDC->SetTextBackground(*wxRED);
456 memDC->SetTextBackground(m_owner->m_colourBackground);
457 memDC->SetLogicalFunction(wxOR);
458
459 //don't understand how but the outline is also depending on logicalfunction
460 memDC->SetPen( wxPen( "yellow", 4, wxSOLID) );
461 memDC->DrawRectangle( 10, 10, 200, 200 );
462
463 memDC->SetBrush(wxNullBrush);
464 memDC->SetPen(wxNullPen);
465
466 memDC->EndDrawing();
467 dc.Blit(x,y,600,400,memDC,0,0,wxCOPY);
468 delete bmpBlit;
469 delete memDC;
470 break;
471 }
472 case 2: //now with transparent inversed fillpatterns
473 {
474 wxBitmap* bmpBlit = new wxBitmap(600,400);
475 wxMemoryDC* memDC= new wxMemoryDC();
476 wxBrush _clearbrush(*wxWHITE,wxSOLID);
477 memDC->SelectObject(*bmpBlit);
478 memDC->BeginDrawing();
479 memDC->SetBackground(_clearbrush);
480 memDC->Clear();
481 memDC->SetBackground(wxNullBrush);
482
483 memDC->SetPen( wxPen( "black", 4, wxSOLID) );
484 memDC->SetBrush( *brush4 );
485 memDC->SetTextBackground(*wxBLACK); // 0s --> 0x000000 (black)
486 memDC->SetTextForeground(*wxWHITE); // 1s --> 0xFFFFFF (white)
487 memDC->SetLogicalFunction(wxAND_INVERT);
488
489 // BLACK OUT the opaque pixels and leave the rest as is
490 memDC->DrawPolygon(5,todraw2,0,0,wxWINDING_RULE);
491
492 // Set background and foreground colors for fill pattern
493 //the previous blacked out pixels are now merged with the layer color
494 //while the non blacked out pixels stay as they are.
495 memDC->SetTextBackground(*wxBLACK); // 0s --> 0x000000 (black)
496
497 //now define what will be the color of the fillpattern parts that are not transparent
498 memDC->SetTextForeground(m_owner->m_colourForeground);
499 memDC->SetLogicalFunction(wxOR);
500
501
502 //don't understand how but the outline is also depending on logicalfunction
503 memDC->SetPen( wxPen( "red", 4, wxSOLID) );
504 memDC->DrawPolygon(5,todraw2,0,0,wxWINDING_RULE);
505
506 memDC->SetLogicalFunction(wxCOPY);
507
508 memDC->SetPen( wxPen( "black", 4, wxSOLID) );
509 memDC->SetBrush( *brush36 );
510 memDC->SetTextBackground(*wxBLACK); // 0s --> 0x000000 (black)
511 memDC->SetTextForeground(*wxWHITE); // 1s --> 0xFFFFFF (white)
512 memDC->SetLogicalFunction(wxAND_INVERT);
513
514 memDC->DrawRectangle( 10,10, 200, 200 );
515
516 // Set background and foreground colors for fill pattern
517 //the previous blacked out pixels are now merged with the layer color
518 //while the non blacked out pixels stay as they are.
519 memDC->SetTextBackground(*wxBLACK); // 0s --> 0x000000 (black)
520 //now define what will be the color of the fillpattern parts that are not transparent
521 memDC->SetTextForeground(m_owner->m_colourBackground);
522 memDC->SetLogicalFunction(wxOR);
523
524 //don't understand how but the outline is also depending on logicalfunction
525 memDC->SetPen( wxPen( "yellow", 4, wxSOLID) );
526 memDC->DrawRectangle( 10, 10, 200, 200 );
527
528 memDC->SetBrush(wxNullBrush);
529 memDC->SetPen(wxNullPen);
530 dc.Blit(x,y,600,400,memDC,0,0,wxCOPY);
531 delete bmpBlit;
532 delete memDC;
533 }
534 }
535
536 delete brush4;
537 delete brush4_mono;
538 delete brush36;
539 }
540
541 void MyCanvas::DrawTestLines( int x, int y, int width, wxDC &dc )
542 {
543 dc.SetPen( wxPen( "black", width, wxSOLID) );
544 dc.SetBrush( *wxRED_BRUSH );
545 dc.DrawRectangle( x+10, y+10, 100, 190 );
546
547 dc.SetPen( wxPen( "black", width, wxSOLID) );
548 dc.DrawLine( x+20, y+20, 100, y+20 );
549 dc.SetPen( wxPen( "black", width, wxDOT) );
550 dc.DrawLine( x+20, y+30, 100, y+30 );
551 dc.SetPen( wxPen( "black", width, wxSHORT_DASH) );
552 dc.DrawLine( x+20, y+40, 100, y+40 );
553 dc.SetPen( wxPen( "black", width, wxLONG_DASH) );
554 dc.DrawLine( x+20, y+50, 100, y+50 );
555 dc.SetPen( wxPen( "black", width, wxDOT_DASH) );
556 dc.DrawLine( x+20, y+60, 100, y+60 );
557
558 dc.SetPen( wxPen( "black", width, wxBDIAGONAL_HATCH) );
559 dc.DrawLine( x+20, y+70, 100, y+70 );
560 dc.SetPen( wxPen( "black", width, wxCROSSDIAG_HATCH) );
561 dc.DrawLine( x+20, y+80, 100, y+80 );
562 dc.SetPen( wxPen( "black", width, wxFDIAGONAL_HATCH) );
563 dc.DrawLine( x+20, y+90, 100, y+90 );
564 dc.SetPen( wxPen( "black", width, wxCROSS_HATCH) );
565 dc.DrawLine( x+20, y+100, 100, y+100 );
566 dc.SetPen( wxPen( "black", width, wxHORIZONTAL_HATCH) );
567 dc.DrawLine( x+20, y+110, 100, y+110 );
568 dc.SetPen( wxPen( "black", width, wxVERTICAL_HATCH) );
569 dc.DrawLine( x+20, y+120, 100, y+120 );
570
571 wxPen ud( "black", width, wxUSER_DASH );
572 wxDash dash1[1];
573 dash1[0] = 0;
574 ud.SetDashes( 1, dash1 );
575 dc.DrawLine( x+20, y+140, 100, y+140 );
576 dash1[0] = 1;
577 ud.SetDashes( 1, dash1 );
578 dc.DrawLine( x+20, y+150, 100, y+150 );
579 dash1[0] = 2;
580 ud.SetDashes( 1, dash1 );
581 dc.DrawLine( x+20, y+160, 100, y+160 );
582 dash1[0] = 0xFF;
583 ud.SetDashes( 1, dash1 );
584 dc.DrawLine( x+20, y+170, 100, y+170 );
585 }
586
587 void MyCanvas::DrawDefault(wxDC& dc)
588 {
589 // mark the origin
590 dc.DrawCircle(0, 0, 10);
591 #if !(defined __WXGTK__) && !(defined __WXMOTIF__)
592 // not implemented in wxGTK or wxMOTIF :-(
593 dc.FloodFill(0, 0, wxColour(255, 0, 0));
594 #endif //
595
596 dc.DrawCheckMark(5, 80, 15, 15);
597 dc.DrawCheckMark(25, 80, 30, 30);
598 dc.DrawCheckMark(60, 80, 60, 60);
599
600 // this is the test for "blitting bitmap into DC damages selected brush" bug
601 wxCoord rectSize = m_std_icon.GetWidth() + 10;
602 wxCoord x = 100;
603 dc.SetPen(*wxTRANSPARENT_PEN);
604 dc.SetBrush( *wxGREEN_BRUSH );
605 dc.DrawRectangle(x, 10, rectSize, rectSize);
606 dc.DrawBitmap(m_std_icon, x + 5, 15, TRUE);
607 x += rectSize + 10;
608 dc.DrawRectangle(x, 10, rectSize, rectSize);
609 dc.DrawIcon(m_std_icon, x + 5, 15);
610 x += rectSize + 10;
611 dc.DrawRectangle(x, 10, rectSize, rectSize);
612
613 // test for "transparent" bitmap drawing (it intersects with the last
614 // rectangle above)
615 //dc.SetBrush( *wxTRANSPARENT_BRUSH );
616
617 if (m_smile_bmp.Ok())
618 dc.DrawBitmap(m_smile_bmp, x + rectSize - 20, rectSize - 10, TRUE);
619
620 dc.SetBrush( *wxBLACK_BRUSH );
621 dc.DrawRectangle( 0, 160, 1000, 300 );
622
623 // draw lines
624 wxBitmap bitmap(20,70);
625 wxMemoryDC memdc;
626 memdc.SelectObject( bitmap );
627 memdc.SetBrush( *wxBLACK_BRUSH );
628 memdc.SetPen( *wxWHITE_PEN );
629 memdc.DrawRectangle(0,0,20,70);
630 memdc.DrawLine( 10,0,10,70 );
631
632 // to the right
633 wxPen pen = *wxRED_PEN;
634 memdc.SetPen(pen);
635 memdc.DrawLine( 10, 5,10, 5 );
636 memdc.DrawLine( 10,10,11,10 );
637 memdc.DrawLine( 10,15,12,15 );
638 memdc.DrawLine( 10,20,13,20 );
639
640 /*
641 memdc.SetPen(*wxRED_PEN);
642 memdc.DrawLine( 12, 5,12, 5 );
643 memdc.DrawLine( 12,10,13,10 );
644 memdc.DrawLine( 12,15,14,15 );
645 memdc.DrawLine( 12,20,15,20 );
646 */
647
648 // same to the left
649 memdc.DrawLine( 10,25,10,25 );
650 memdc.DrawLine( 10,30, 9,30 );
651 memdc.DrawLine( 10,35, 8,35 );
652 memdc.DrawLine( 10,40, 7,40 );
653
654 // XOR draw lines
655 dc.SetPen(*wxWHITE_PEN);
656 memdc.SetLogicalFunction( wxINVERT );
657 memdc.SetPen( *wxWHITE_PEN );
658 memdc.DrawLine( 10,50,10,50 );
659 memdc.DrawLine( 10,55,11,55 );
660 memdc.DrawLine( 10,60,12,60 );
661 memdc.DrawLine( 10,65,13,65 );
662
663 memdc.DrawLine( 12,50,12,50 );
664 memdc.DrawLine( 12,55,13,55 );
665 memdc.DrawLine( 12,60,14,60 );
666 memdc.DrawLine( 12,65,15,65 );
667
668 memdc.SelectObject( wxNullBitmap );
669 dc.DrawBitmap( bitmap, 10, 170 );
670 wxImage image( bitmap );
671 image.Rescale( 60,210 );
672 bitmap = image.ConvertToBitmap();
673 dc.DrawBitmap( bitmap, 50, 170 );
674
675 // test the rectangle outline drawing - there should be one pixel between
676 // the rect and the lines
677 dc.SetPen(*wxWHITE_PEN);
678 dc.SetBrush( *wxTRANSPARENT_BRUSH );
679 dc.DrawRectangle(150, 170, 49, 29);
680 dc.DrawRectangle(200, 170, 49, 29);
681 dc.SetPen(*wxWHITE_PEN);
682 dc.DrawLine(250, 210, 250, 170);
683 dc.DrawLine(260, 200, 150, 200);
684
685 // test the rectangle filled drawing - there should be one pixel between
686 // the rect and the lines
687 dc.SetPen(*wxTRANSPARENT_PEN);
688 dc.SetBrush( *wxWHITE_BRUSH );
689 dc.DrawRectangle(300, 170, 49, 29);
690 dc.DrawRectangle(350, 170, 49, 29);
691 dc.SetPen(*wxWHITE_PEN);
692 dc.DrawLine(400, 170, 400, 210);
693 dc.DrawLine(300, 200, 410, 200);
694
695 // a few more tests of this kind
696 dc.SetPen(*wxRED_PEN);
697 dc.SetBrush( *wxWHITE_BRUSH );
698 dc.DrawRectangle(300, 220, 1, 1);
699 dc.DrawRectangle(310, 220, 2, 2);
700 dc.DrawRectangle(320, 220, 3, 3);
701 dc.DrawRectangle(330, 220, 4, 4);
702
703 dc.SetPen(*wxTRANSPARENT_PEN);
704 dc.SetBrush( *wxWHITE_BRUSH );
705 dc.DrawRectangle(300, 230, 1, 1);
706 dc.DrawRectangle(310, 230, 2, 2);
707 dc.DrawRectangle(320, 230, 3, 3);
708 dc.DrawRectangle(330, 230, 4, 4);
709
710 // and now for filled rect with outline
711 dc.SetPen(*wxRED_PEN);
712 dc.SetBrush( *wxWHITE_BRUSH );
713 dc.DrawRectangle(500, 170, 49, 29);
714 dc.DrawRectangle(550, 170, 49, 29);
715 dc.SetPen(*wxWHITE_PEN);
716 dc.DrawLine(600, 170, 600, 210);
717 dc.DrawLine(500, 200, 610, 200);
718
719 // test the rectangle outline drawing - there should be one pixel between
720 // the rect and the lines
721 dc.SetPen(*wxWHITE_PEN);
722 dc.SetBrush( *wxTRANSPARENT_BRUSH );
723 dc.DrawRoundedRectangle(150, 270, 49, 29, 6);
724 dc.DrawRoundedRectangle(200, 270, 49, 29, 6);
725 dc.SetPen(*wxWHITE_PEN);
726 dc.DrawLine(250, 270, 250, 310);
727 dc.DrawLine(150, 300, 260, 300);
728
729 // test the rectangle filled drawing - there should be one pixel between
730 // the rect and the lines
731 dc.SetPen(*wxTRANSPARENT_PEN);
732 dc.SetBrush( *wxWHITE_BRUSH );
733 dc.DrawRoundedRectangle(300, 270, 49, 29, 6);
734 dc.DrawRoundedRectangle(350, 270, 49, 29, 6);
735 dc.SetPen(*wxWHITE_PEN);
736 dc.DrawLine(400, 270, 400, 310);
737 dc.DrawLine(300, 300, 410, 300);
738
739 // Added by JACS to demonstrate bizarre behaviour.
740 // With a size of 70, we get a missing red RHS,
741 // and the hight is too small, so we get yellow
742 // showing. With a size of 40, it draws as expected:
743 // it just shows a white rectangle with red outline.
744 int totalWidth = 70;
745 int totalHeight = 70;
746 wxBitmap bitmap2(totalWidth, totalHeight);
747
748 wxMemoryDC memdc2;
749 memdc2.SelectObject(bitmap2);
750
751 wxBrush yellowBrush(wxColour(255, 255, 0), wxSOLID);
752 memdc2.SetBackground(yellowBrush);
753 memdc2.Clear();
754
755 wxPen yellowPen(wxColour(255, 255, 0), 1, wxSOLID);
756
757 // Now draw a white rectangle with red outline. It should
758 // entirely eclipse the yellow background.
759 memdc2.SetPen(*wxRED_PEN);
760 memdc2.SetBrush(*wxWHITE_BRUSH);
761
762 memdc2.DrawRectangle(0, 0, totalWidth, totalHeight);
763
764 memdc2.SetPen(wxNullPen);
765 memdc2.SetBrush(wxNullBrush);
766 memdc2.SelectObject(wxNullBitmap);
767
768 dc.DrawBitmap(bitmap2, 500, 270);
769
770 // Repeat, but draw directly on dc
771 // Draw a yellow rectangle filling the bitmap
772
773 x = 600; int y = 270;
774 dc.SetPen(yellowPen);
775 dc.SetBrush(yellowBrush);
776 dc.DrawRectangle(x, y, totalWidth, totalHeight);
777
778 // Now draw a white rectangle with red outline. It should
779 // entirely eclipse the yellow background.
780 dc.SetPen(*wxRED_PEN);
781 dc.SetBrush(*wxWHITE_BRUSH);
782
783 dc.DrawRectangle(x, y, totalWidth, totalHeight);
784 }
785
786 void MyCanvas::DrawText(wxDC& dc)
787 {
788 // set underlined font for testing
789 dc.SetFont( wxFont(12, wxMODERN, wxNORMAL, wxNORMAL, TRUE) );
790 dc.DrawText( "This is text", 110, 10 );
791 dc.DrawRotatedText( "That is text", 20, 10, -45 );
792
793 dc.SetFont( *wxNORMAL_FONT );
794
795 wxString text;
796 dc. SetBackgroundMode(wxTRANSPARENT);
797
798 for ( int n = -180; n < 180; n += 30 )
799 {
800 text.Printf(" %d rotated text", n);
801 dc.DrawRotatedText(text , 400, 400, n);
802 }
803
804 dc.SetFont( wxFont( 18, wxSWISS, wxNORMAL, wxNORMAL ) );
805
806 dc.DrawText( "This is Swiss 18pt text.", 110, 40 );
807
808 long length;
809 long height;
810 long descent;
811 dc.GetTextExtent( "This is Swiss 18pt text.", &length, &height, &descent );
812 text.Printf( "Dimensions are length %ld, height %ld, descent %ld", length, height, descent );
813 dc.DrawText( text, 110, 80 );
814
815 text.Printf( "CharHeight() returns: %d", dc.GetCharHeight() );
816 dc.DrawText( text, 110, 120 );
817
818 dc.DrawRectangle( 100, 40, 4, height );
819 }
820
821 static const struct
822 {
823 const wxChar *name;
824 int rop;
825 } rasterOperations[] =
826 {
827 { "wxAND", wxAND },
828 { "wxAND_INVERT", wxAND_INVERT },
829 { "wxAND_REVERSE", wxAND_REVERSE },
830 { "wxCLEAR", wxCLEAR },
831 { "wxCOPY", wxCOPY },
832 { "wxEQUIV", wxEQUIV },
833 { "wxINVERT", wxINVERT },
834 { "wxNAND", wxNAND },
835 { "wxNO_OP", wxNO_OP },
836 { "wxOR", wxOR },
837 { "wxOR_INVERT", wxOR_INVERT },
838 { "wxOR_REVERSE", wxOR_REVERSE },
839 { "wxSET", wxSET },
840 { "wxSRC_INVERT", wxSRC_INVERT },
841 { "wxXOR", wxXOR },
842 };
843
844 void MyCanvas::DrawImages(wxDC& dc)
845 {
846 dc.DrawText("original image", 0, 0);
847 dc.DrawBitmap(gs_bmpNoMask, 0, 20, 0);
848 dc.DrawText("with colour mask", 0, 100);
849 dc.DrawBitmap(gs_bmpWithColMask, 0, 120, TRUE);
850 dc.DrawText("the mask image", 0, 200);
851 dc.DrawBitmap(gs_bmpMask, 0, 220, 0);
852 dc.DrawText("masked image", 0, 300);
853 dc.DrawBitmap(gs_bmpWithMask, 0, 320, TRUE);
854
855 int cx = gs_bmpWithColMask.GetWidth(),
856 cy = gs_bmpWithColMask.GetHeight();
857
858 wxMemoryDC memDC;
859 for ( size_t n = 0; n < WXSIZEOF(rasterOperations); n++ )
860 {
861 wxCoord x = 120 + 150*(n%4),
862 y = 20 + 100*(n/4);
863
864 dc.DrawText(rasterOperations[n].name, x, y - 20);
865 memDC.SelectObject(gs_bmpWithColMask);
866 dc.Blit(x, y, cx, cy, &memDC, 0, 0, rasterOperations[n].rop, TRUE);
867 }
868 }
869
870 void MyCanvas::DrawWithLogicalOps(wxDC& dc)
871 {
872 static const wxCoord w = 60;
873 static const wxCoord h = 60;
874
875 // reuse the text colour here
876 dc.SetPen(wxPen(m_owner->m_colourForeground, 1, wxSOLID));
877 dc.SetBrush(*wxTRANSPARENT_BRUSH);
878
879 size_t n;
880 for ( n = 0; n < WXSIZEOF(rasterOperations); n++ )
881 {
882 wxCoord x = 20 + 150*(n%4),
883 y = 20 + 100*(n/4);
884
885 dc.DrawText(rasterOperations[n].name, x, y - 20);
886 dc.SetLogicalFunction(rasterOperations[n].rop);
887 dc.DrawRectangle(x, y, w, h);
888 dc.DrawLine(x, y, x + w, y + h);
889 dc.DrawLine(x + w, y, x, y + h);
890 }
891
892 // now some filled rectangles
893 dc.SetBrush(wxBrush(m_owner->m_colourForeground, wxSOLID));
894
895 for ( n = 0; n < WXSIZEOF(rasterOperations); n++ )
896 {
897 wxCoord x = 20 + 150*(n%4),
898 y = 500 + 100*(n/4);
899
900 dc.DrawText(rasterOperations[n].name, x, y - 20);
901 dc.SetLogicalFunction(rasterOperations[n].rop);
902 dc.DrawRectangle(x, y, w, h);
903 }
904 }
905
906 void MyCanvas::DrawRegions(wxDC& dc)
907 {
908 dc.SetBrush( *wxWHITE_BRUSH );
909 dc.SetPen( *wxTRANSPARENT_PEN );
910 dc.DrawRectangle( 10,10,310,310 );
911
912 dc.SetClippingRegion( 20,20,100,270 );
913
914 dc.SetBrush( *wxRED_BRUSH );
915 dc.DrawRectangle( 10,10,310,310 );
916
917 dc.SetClippingRegion( 20,20,100,100 );
918
919 dc.SetBrush( *wxCYAN_BRUSH );
920 dc.DrawRectangle( 10,10,310,310 );
921
922 dc.DestroyClippingRegion();
923 dc.SetClippingRegion( 120,30,100,270 );
924
925 dc.SetBrush( *wxGREY_BRUSH );
926 dc.DrawRectangle( 10,10,310,310 );
927
928 if (m_smile_bmp.Ok())
929 {
930 dc.DrawBitmap( m_smile_bmp, 140, 20, TRUE );
931 dc.DrawBitmap( m_smile_bmp, 140, 290, TRUE );
932 dc.DrawBitmap( m_smile_bmp, 110, 80, TRUE );
933 dc.DrawBitmap( m_smile_bmp, 210, 80, TRUE );
934 }
935 }
936
937 void MyCanvas::OnPaint(wxPaintEvent &WXUNUSED(event))
938 {
939 wxPaintDC dc(this);
940 PrepareDC(dc);
941 m_owner->PrepareDC(dc);
942
943 dc.SetBackgroundMode( m_owner->m_backgroundMode );
944 if ( m_owner->m_backgroundBrush.Ok() )
945 dc.SetBackground( m_owner->m_backgroundBrush );
946 if ( m_owner->m_colourForeground.Ok() )
947 dc.SetTextForeground( m_owner->m_colourForeground );
948 if ( m_owner->m_colourBackground.Ok() )
949 dc.SetTextBackground( m_owner->m_colourBackground );
950
951 if ( m_owner->m_textureBackground) {
952 if ( ! m_owner->m_backgroundBrush.Ok() ) {
953 wxBrush b(wxColour(0,128,0), wxSOLID);
954 dc.SetBackground(b);
955 }
956 }
957
958 dc.Clear();
959
960 if ( m_owner->m_textureBackground) {
961 dc.SetPen(*wxMEDIUM_GREY_PEN);
962 for (int i=0; i<200; i++)
963 dc.DrawLine(0, i*10, i*10, 0);
964 }
965
966 switch ( m_show )
967 {
968 case Show_Default:
969 DrawDefault(dc);
970 break;
971
972 case Show_Regions:
973 DrawRegions(dc);
974 break;
975
976 case Show_Text:
977 DrawText(dc);
978 break;
979
980 case Show_Lines:
981 DrawTestLines( 0, 100, 0, dc );
982 DrawTestLines( 0, 300, 1, dc );
983 DrawTestLines( 0, 500, 2, dc );
984 DrawTestLines( 0, 700, 6, dc );
985 break;
986
987 case Show_Polygons:
988 DrawTestPoly( 0, 100, dc, 0 );
989 /*
990 DrawTestPoly( 33, 500, dc, 1 );
991 DrawTestPoly( 43, 1000, dc, 2 );
992 */
993 break;
994
995 case Show_Mask:
996 DrawImages(dc);
997 break;
998
999 case Show_Ops:
1000 DrawWithLogicalOps(dc);
1001 break;
1002 }
1003 }
1004
1005 void MyCanvas::OnMouseMove(wxMouseEvent &event)
1006 {
1007 wxClientDC dc(this);
1008 PrepareDC(dc);
1009 m_owner->PrepareDC(dc);
1010
1011 wxPoint pos = event.GetPosition();
1012 long x = dc.DeviceToLogicalX( pos.x );
1013 long y = dc.DeviceToLogicalY( pos.y );
1014 wxString str;
1015 str.Printf( "Current mouse position: %d,%d", (int)x, (int)y );
1016 m_owner->SetStatusText( str );
1017 }
1018
1019 // ----------------------------------------------------------------------------
1020 // MyFrame
1021 // ----------------------------------------------------------------------------
1022
1023 // the event tables connect the wxWindows events with the functions (event
1024 // handlers) which process them. It can be also done at run-time, but for the
1025 // simple menu events like this the static method is much simpler.
1026 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
1027 EVT_MENU (File_Quit, MyFrame::OnQuit)
1028 EVT_MENU (File_About, MyFrame::OnAbout)
1029
1030 EVT_MENU_RANGE(MenuShow_First, MenuShow_Last, MyFrame::OnShow)
1031
1032 EVT_MENU_RANGE(MenuOption_First, MenuOption_Last, MyFrame::OnOption)
1033 END_EVENT_TABLE()
1034
1035 // frame constructor
1036 MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
1037 : wxFrame((wxFrame *)NULL, -1, title, pos, size)
1038 {
1039 // set the frame icon
1040 SetIcon(wxICON(mondrian));
1041
1042 wxMenu *menuFile = new wxMenu;
1043 menuFile->Append(File_ShowDefault, "&Default screen\tF1");
1044 menuFile->Append(File_ShowText, "&Text screen\tF2");
1045 menuFile->Append(File_ShowLines, "&Lines screen\tF3");
1046 menuFile->Append(File_ShowPolygons, "&Polygons screen\tF4");
1047 menuFile->Append(File_ShowMask, "wx&Mask screen\tF5");
1048 menuFile->Append(File_ShowOps, "&ROP screen\tF6");
1049 menuFile->Append(File_ShowRegions, "Re&gions screen\tF6");
1050 menuFile->AppendSeparator();
1051 menuFile->Append(File_About, "&About...\tCtrl-A", "Show about dialog");
1052 menuFile->AppendSeparator();
1053 menuFile->Append(File_Quit, "E&xit\tAlt-X", "Quit this program");
1054
1055 wxMenu *menuMapMode = new wxMenu;
1056 menuMapMode->Append( MapMode_Text, "&TEXT map mode" );
1057 menuMapMode->Append( MapMode_Lometric, "&LOMETRIC map mode" );
1058 menuMapMode->Append( MapMode_Twips, "T&WIPS map mode" );
1059 menuMapMode->Append( MapMode_Points, "&POINTS map mode" );
1060 menuMapMode->Append( MapMode_Metric, "&METRIC map mode" );
1061
1062 wxMenu *menuUserScale = new wxMenu;
1063 menuUserScale->Append( UserScale_StretchHoriz, "Stretch horizontally\tCtrl-H" );
1064 menuUserScale->Append( UserScale_ShrinkHoriz, "Shrink horizontally\tCtrl-G" );
1065 menuUserScale->Append( UserScale_StretchVertic, "Stretch vertically\tCtrl-V" );
1066 menuUserScale->Append( UserScale_ShrinkVertic, "Shrink vertically\tCtrl-W" );
1067 menuUserScale->AppendSeparator();
1068 menuUserScale->Append( UserScale_Restore, "Restore to normal\tCtrl-0" );
1069
1070 wxMenu *menuAxis = new wxMenu;
1071 menuAxis->Append( AxisMirror_Horiz, "Mirror horizontally\tCtrl-M", "", TRUE );
1072 menuAxis->Append( AxisMirror_Vertic, "Mirror vertically\tCtrl-N", "", TRUE );
1073
1074 wxMenu *menuLogical = new wxMenu;
1075 menuLogical->Append( LogicalOrigin_MoveDown, "Move &down\tCtrl-D" );
1076 menuLogical->Append( LogicalOrigin_MoveUp, "Move &up\tCtrl-U" );
1077 menuLogical->Append( LogicalOrigin_MoveLeft, "Move &right\tCtrl-L" );
1078 menuLogical->Append( LogicalOrigin_MoveRight, "Move &left\tCtrl-R" );
1079
1080 wxMenu *menuColour = new wxMenu;
1081 menuColour->Append( Colour_TextForeground, "Text foreground..." );
1082 menuColour->Append( Colour_TextBackground, "Text background..." );
1083 menuColour->Append( Colour_Background, "Background colour..." );
1084 menuColour->Append( Colour_BackgroundMode, "Opaque/transparent\tCtrl-B", "", TRUE );
1085 menuColour->Append( Colour_TextureBackgound, "Draw textured background\tCtrl-T", "", TRUE);
1086
1087 // now append the freshly created menu to the menu bar...
1088 wxMenuBar *menuBar = new wxMenuBar;
1089 menuBar->Append(menuFile, "&File");
1090 menuBar->Append(menuMapMode, "&MapMode");
1091 menuBar->Append(menuUserScale, "&UserScale");
1092 menuBar->Append(menuAxis, "&Axis");
1093 menuBar->Append(menuLogical, "&LogicalOrigin");
1094 menuBar->Append(menuColour, "&Colours");
1095
1096 // ... and attach this menu bar to the frame
1097 SetMenuBar(menuBar);
1098
1099 // create a status bar just for fun (by default with 1 pane only)
1100 CreateStatusBar(2);
1101 SetStatusText("Welcome to wxWindows!");
1102
1103 m_mapMode = wxMM_TEXT;
1104 m_xUserScale = 1.0;
1105 m_yUserScale = 1.0;
1106 m_xLogicalOrigin = 0;
1107 m_yLogicalOrigin = 0;
1108 m_xAxisReversed =
1109 m_yAxisReversed = FALSE;
1110 m_backgroundMode = wxSOLID;
1111 m_colourForeground = *wxRED;
1112 m_colourBackground = *wxBLUE;
1113 m_textureBackground = FALSE;
1114
1115 m_canvas = new MyCanvas( this );
1116 m_canvas->SetScrollbars( 10, 10, 100, 240 );
1117 }
1118
1119 // event handlers
1120
1121 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
1122 {
1123 // TRUE is to force the frame to close
1124 Close(TRUE);
1125 }
1126
1127 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
1128 {
1129 wxString msg;
1130 msg.Printf( wxT("This is the about dialog of the drawing sample.\n")
1131 wxT("This sample tests various primitive drawing functions\n")
1132 wxT("without any tests to prevent flicker.\n")
1133 wxT("Copyright (c) Robert Roebling 1999")
1134 );
1135
1136 wxMessageBox(msg, "About Drawing", wxOK | wxICON_INFORMATION, this);
1137 }
1138
1139 void MyFrame::OnShow(wxCommandEvent& event)
1140 {
1141 m_canvas->Show((ScreenToShow)(event.GetInt() - MenuShow_First));
1142 }
1143
1144 void MyFrame::OnOption(wxCommandEvent& event)
1145 {
1146 switch (event.GetInt())
1147 {
1148 case MapMode_Text:
1149 m_mapMode = wxMM_TEXT;
1150 break;
1151 case MapMode_Lometric:
1152 m_mapMode = wxMM_LOMETRIC;
1153 break;
1154 case MapMode_Twips:
1155 m_mapMode = wxMM_TWIPS;
1156 break;
1157 case MapMode_Points:
1158 m_mapMode = wxMM_POINTS;
1159 break;
1160 case MapMode_Metric:
1161 m_mapMode = wxMM_METRIC;
1162 break;
1163
1164 case LogicalOrigin_MoveDown:
1165 m_yLogicalOrigin += 10;
1166 break;
1167 case LogicalOrigin_MoveUp:
1168 m_yLogicalOrigin -= 10;
1169 break;
1170 case LogicalOrigin_MoveLeft:
1171 m_xLogicalOrigin += 10;
1172 break;
1173 case LogicalOrigin_MoveRight:
1174 m_xLogicalOrigin -= 10;
1175 break;
1176
1177 case UserScale_StretchHoriz:
1178 m_xUserScale *= 1.10;
1179 break;
1180 case UserScale_ShrinkHoriz:
1181 m_xUserScale /= 1.10;
1182 break;
1183 case UserScale_StretchVertic:
1184 m_yUserScale *= 1.10;
1185 break;
1186 case UserScale_ShrinkVertic:
1187 m_yUserScale /= 1.10;
1188 break;
1189 case UserScale_Restore:
1190 m_xUserScale =
1191 m_yUserScale = 1.0;
1192 break;
1193
1194 case AxisMirror_Vertic:
1195 m_yAxisReversed = !m_yAxisReversed;
1196 break;
1197 case AxisMirror_Horiz:
1198 m_xAxisReversed = !m_xAxisReversed;
1199 break;
1200
1201 case Colour_TextForeground:
1202 m_colourForeground = SelectColour();
1203 break;
1204 case Colour_TextBackground:
1205 m_colourBackground = SelectColour();
1206 break;
1207 case Colour_Background:
1208 {
1209 wxColour col = SelectColour();
1210 if ( col.Ok() )
1211 {
1212 m_backgroundBrush.SetColour(col);
1213 }
1214 }
1215 break;
1216 case Colour_BackgroundMode:
1217 m_backgroundMode = m_backgroundMode == wxSOLID ? wxTRANSPARENT
1218 : wxSOLID;
1219 break;
1220
1221 case Colour_TextureBackgound:
1222 m_textureBackground = ! m_textureBackground;
1223 break;
1224
1225 default:
1226 // skip Refresh()
1227 return;
1228 }
1229
1230 m_canvas->Refresh();
1231 }
1232
1233 void MyFrame::PrepareDC(wxDC& dc)
1234 {
1235 dc.SetMapMode( m_mapMode );
1236 dc.SetUserScale( m_xUserScale, m_yUserScale );
1237 dc.SetLogicalOrigin( m_xLogicalOrigin, m_yLogicalOrigin );
1238 dc.SetAxisOrientation( !m_xAxisReversed, m_yAxisReversed );
1239 }
1240
1241 wxColour MyFrame::SelectColour()
1242 {
1243 wxColour col;
1244 wxColourData data;
1245 wxColourDialog dialog(this, &data);
1246
1247 if ( dialog.ShowModal() == wxID_OK )
1248 {
1249 col = dialog.GetColourData().GetColour();
1250 }
1251
1252 return col;
1253 }
wxWidgets (Impactor)