projects / wxWidgets.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Lotta stuff for drawing etc.
[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.SetBrush(wxNullBrush);
396 dc.SetPen(wxNullPen);
397 break;
398 }
399 case 1: //now with transparent fillpatterns
400 {
401
402 wxBitmap* bmpBlit = new wxBitmap(600,400);
403 wxMemoryDC* memDC= new wxMemoryDC();
404 // wxBrush _clearbrush(*wxGREEN,wxSOLID);
405 wxBrush _clearbrush(*wxBLACK,wxSOLID);
406 memDC->SelectObject(*bmpBlit);
407 memDC->BeginDrawing();
408 memDC->SetBackground(_clearbrush);
409 memDC->Clear();
410 memDC->SetBackground(wxNullBrush);
411
412 memDC->SetPen( wxPen( "black", 4, wxSOLID) );
413 memDC->SetBrush( wxNullBrush);
414 memDC->SetBrush( *brush4 );
415 memDC->SetTextForeground(*wxBLACK); // 0s --> 0x000000 (black)
416 memDC->SetTextBackground(*wxWHITE); // 1s --> 0xFFFFFF (white)
417 memDC->SetLogicalFunction(wxAND_INVERT);
418
419 // BLACK OUT the opaque pixels and leave the rest as is
420 memDC->DrawPolygon(5,todraw2,0,0,wxWINDING_RULE);
421
422 // Set background and foreground colors for fill pattern
423 //the previous blacked out pixels are now merged with the layer color
424 //while the non blacked out pixels stay as they are.
425 memDC->SetTextForeground(*wxBLACK); // 0s --> 0x000000 (black)
426
427 //now define what will be the color of the fillpattern parts that are not transparent
428 // memDC->SetTextBackground(*wxBLUE);
429 memDC->SetTextBackground(m_owner->m_colourForeground);
430 memDC->SetLogicalFunction(wxOR);
431
432
433 //don't understand how but the outline is also depending on logicalfunction
434 memDC->SetPen( wxPen( "red", 4, wxSOLID) );
435 memDC->DrawPolygon(5,todraw2,0,0,wxWINDING_RULE);
436
437 memDC->SetLogicalFunction(wxCOPY);
438
439 memDC->SetPen( wxPen( "black", 4, wxSOLID) );
440 memDC->SetBrush( wxNullBrush);
441 memDC->SetBrush( *brush36 );
442 memDC->SetTextForeground(*wxBLACK); // 0s --> 0x000000 (black)
443 memDC->SetTextBackground(*wxWHITE); // 1s --> 0xFFFFFF (white)
444 memDC->SetLogicalFunction(wxAND_INVERT);
445
446 memDC->DrawRectangle( 10, 10, 200, 200 );
447
448 // Set background and foreground colors for fill pattern
449 //the previous blacked out pixels are now merged with the layer color
450 //while the non blacked out pixels stay as they are.
451 memDC->SetTextForeground(*wxBLACK); // 0s --> 0x000000 (black)
452 //now define what will be the color of the fillpattern parts that are not transparent
453 // memDC->SetTextBackground(*wxRED);
454 memDC->SetTextBackground(m_owner->m_colourBackground);
455 memDC->SetLogicalFunction(wxOR);
456
457 //don't understand how but the outline is also depending on logicalfunction
458 memDC->SetPen( wxPen( "yellow", 4, wxSOLID) );
459 memDC->DrawRectangle( 10, 10, 200, 200 );
460
461 memDC->SetBrush(wxNullBrush);
462 memDC->SetPen(wxNullPen);
463
464 memDC->EndDrawing();
465 dc.Blit(x,y,600,400,memDC,0,0,wxCOPY);
466 delete bmpBlit;
467 delete memDC;
468 break;
469 }
470 case 2: //now with transparent inversed fillpatterns
471 {
472 wxBitmap* bmpBlit = new wxBitmap(600,400);
473 wxMemoryDC* memDC= new wxMemoryDC();
474 wxBrush _clearbrush(*wxWHITE,wxSOLID);
475 memDC->SelectObject(*bmpBlit);
476 memDC->BeginDrawing();
477 memDC->SetBackground(_clearbrush);
478 memDC->Clear();
479 memDC->SetBackground(wxNullBrush);
480
481 memDC->SetPen( wxPen( "black", 4, wxSOLID) );
482 memDC->SetBrush( *brush4 );
483 memDC->SetTextBackground(*wxBLACK); // 0s --> 0x000000 (black)
484 memDC->SetTextForeground(*wxWHITE); // 1s --> 0xFFFFFF (white)
485 memDC->SetLogicalFunction(wxAND_INVERT);
486
487 // BLACK OUT the opaque pixels and leave the rest as is
488 memDC->DrawPolygon(5,todraw2,0,0,wxWINDING_RULE);
489
490 // Set background and foreground colors for fill pattern
491 //the previous blacked out pixels are now merged with the layer color
492 //while the non blacked out pixels stay as they are.
493 memDC->SetTextBackground(*wxBLACK); // 0s --> 0x000000 (black)
494
495 //now define what will be the color of the fillpattern parts that are not transparent
496 memDC->SetTextForeground(m_owner->m_colourForeground);
497 memDC->SetLogicalFunction(wxOR);
498
499
500 //don't understand how but the outline is also depending on logicalfunction
501 memDC->SetPen( wxPen( "red", 4, wxSOLID) );
502 memDC->DrawPolygon(5,todraw2,0,0,wxWINDING_RULE);
503
504 memDC->SetLogicalFunction(wxCOPY);
505
506 memDC->SetPen( wxPen( "black", 4, wxSOLID) );
507 memDC->SetBrush( *brush36 );
508 memDC->SetTextBackground(*wxBLACK); // 0s --> 0x000000 (black)
509 memDC->SetTextForeground(*wxWHITE); // 1s --> 0xFFFFFF (white)
510 memDC->SetLogicalFunction(wxAND_INVERT);
511
512 memDC->DrawRectangle( 10,10, 200, 200 );
513
514 // Set background and foreground colors for fill pattern
515 //the previous blacked out pixels are now merged with the layer color
516 //while the non blacked out pixels stay as they are.
517 memDC->SetTextBackground(*wxBLACK); // 0s --> 0x000000 (black)
518 //now define what will be the color of the fillpattern parts that are not transparent
519 memDC->SetTextForeground(m_owner->m_colourBackground);
520 memDC->SetLogicalFunction(wxOR);
521
522 //don't understand how but the outline is also depending on logicalfunction
523 memDC->SetPen( wxPen( "yellow", 4, wxSOLID) );
524 memDC->DrawRectangle( 10, 10, 200, 200 );
525
526 memDC->SetBrush(wxNullBrush);
527 memDC->SetPen(wxNullPen);
528 dc.Blit(x,y,600,400,memDC,0,0,wxCOPY);
529 delete bmpBlit;
530 delete memDC;
531 }
532 }
533
534 delete brush4;
535 delete brush4_mono;
536 delete brush36;
537 }
538
539 void MyCanvas::DrawTestLines( int x, int y, int width, wxDC &dc )
540 {
541 dc.SetPen( wxPen( "black", width, wxSOLID) );
542 dc.SetBrush( *wxRED_BRUSH );
543 dc.DrawRectangle( x+10, y+10, 100, 190 );
544
545 dc.SetPen( wxPen( "black", width, wxSOLID) );
546 dc.DrawLine( x+20, y+20, 100, y+20 );
547 dc.SetPen( wxPen( "black", width, wxDOT) );
548 dc.DrawLine( x+20, y+30, 100, y+30 );
549 dc.SetPen( wxPen( "black", width, wxSHORT_DASH) );
550 dc.DrawLine( x+20, y+40, 100, y+40 );
551 dc.SetPen( wxPen( "black", width, wxLONG_DASH) );
552 dc.DrawLine( x+20, y+50, 100, y+50 );
553 dc.SetPen( wxPen( "black", width, wxDOT_DASH) );
554 dc.DrawLine( x+20, y+60, 100, y+60 );
555
556 dc.SetPen( wxPen( "black", width, wxBDIAGONAL_HATCH) );
557 dc.DrawLine( x+20, y+70, 100, y+70 );
558 dc.SetPen( wxPen( "black", width, wxCROSSDIAG_HATCH) );
559 dc.DrawLine( x+20, y+80, 100, y+80 );
560 dc.SetPen( wxPen( "black", width, wxFDIAGONAL_HATCH) );
561 dc.DrawLine( x+20, y+90, 100, y+90 );
562 dc.SetPen( wxPen( "black", width, wxCROSS_HATCH) );
563 dc.DrawLine( x+20, y+100, 100, y+100 );
564 dc.SetPen( wxPen( "black", width, wxHORIZONTAL_HATCH) );
565 dc.DrawLine( x+20, y+110, 100, y+110 );
566 dc.SetPen( wxPen( "black", width, wxVERTICAL_HATCH) );
567 dc.DrawLine( x+20, y+120, 100, y+120 );
568
569 wxPen ud( "black", width, wxUSER_DASH );
570 wxDash dash1[1];
571 dash1[0] = 0;
572 ud.SetDashes( 1, dash1 );
573 dc.DrawLine( x+20, y+140, 100, y+140 );
574 dash1[0] = 1;
575 ud.SetDashes( 1, dash1 );
576 dc.DrawLine( x+20, y+150, 100, y+150 );
577 dash1[0] = 2;
578 ud.SetDashes( 1, dash1 );
579 dc.DrawLine( x+20, y+160, 100, y+160 );
580 dash1[0] = 0xFF;
581 ud.SetDashes( 1, dash1 );
582 dc.DrawLine( x+20, y+170, 100, y+170 );
583 }
584
585 void MyCanvas::DrawDefault(wxDC& dc)
586 {
587 // mark the origin
588 dc.DrawCircle(0, 0, 10);
589 #if !(defined __WXGTK__) && !(defined __WXMOTIF__)
590 // not implemented in wxGTK or wxMOTIF :-(
591 dc.FloodFill(0, 0, wxColour(255, 0, 0));
592 #endif //
593
594 dc.DrawCheckMark(5, 80, 15, 15);
595 dc.DrawCheckMark(25, 80, 30, 30);
596 dc.DrawCheckMark(60, 80, 60, 60);
597
598 // this is the test for "blitting bitmap into DC damages selected brush" bug
599 wxCoord rectSize = m_std_icon.GetWidth() + 10;
600 wxCoord x = 100;
601 dc.SetPen(*wxTRANSPARENT_PEN);
602 dc.SetBrush( *wxGREEN_BRUSH );
603 dc.DrawRectangle(x, 10, rectSize, rectSize);
604 dc.DrawBitmap(m_std_icon, x + 5, 15, TRUE);
605 x += rectSize + 10;
606 dc.DrawRectangle(x, 10, rectSize, rectSize);
607 dc.DrawIcon(m_std_icon, x + 5, 15);
608 x += rectSize + 10;
609 dc.DrawRectangle(x, 10, rectSize, rectSize);
610
611 // test for "transparent" bitmap drawing (it intersects with the last
612 // rectangle above)
613 //dc.SetBrush( *wxTRANSPARENT_BRUSH );
614
615 if (m_smile_bmp.Ok())
616 dc.DrawBitmap(m_smile_bmp, x + rectSize - 20, rectSize - 10, TRUE);
617
618 dc.SetBrush( *wxBLACK_BRUSH );
619 dc.DrawRectangle( 0, 160, 1000, 300 );
620
621 // draw lines
622 wxBitmap bitmap(20,70);
623 wxMemoryDC memdc;
624 memdc.SelectObject( bitmap );
625 memdc.SetBrush( *wxBLACK_BRUSH );
626 memdc.SetPen( *wxWHITE_PEN );
627 memdc.DrawRectangle(0,0,20,70);
628 memdc.DrawLine( 10,0,10,70 );
629
630 // to the right
631 wxPen pen = *wxRED_PEN;
632 memdc.SetPen(pen);
633 memdc.DrawLine( 10, 5,10, 5 );
634 memdc.DrawLine( 10,10,11,10 );
635 memdc.DrawLine( 10,15,12,15 );
636 memdc.DrawLine( 10,20,13,20 );
637
638 /*
639 memdc.SetPen(*wxRED_PEN);
640 memdc.DrawLine( 12, 5,12, 5 );
641 memdc.DrawLine( 12,10,13,10 );
642 memdc.DrawLine( 12,15,14,15 );
643 memdc.DrawLine( 12,20,15,20 );
644 */
645
646 // same to the left
647 memdc.DrawLine( 10,25,10,25 );
648 memdc.DrawLine( 10,30, 9,30 );
649 memdc.DrawLine( 10,35, 8,35 );
650 memdc.DrawLine( 10,40, 7,40 );
651
652 // XOR draw lines
653 dc.SetPen(*wxWHITE_PEN);
654 memdc.SetLogicalFunction( wxINVERT );
655 memdc.SetPen( *wxWHITE_PEN );
656 memdc.DrawLine( 10,50,10,50 );
657 memdc.DrawLine( 10,55,11,55 );
658 memdc.DrawLine( 10,60,12,60 );
659 memdc.DrawLine( 10,65,13,65 );
660
661 memdc.DrawLine( 12,50,12,50 );
662 memdc.DrawLine( 12,55,13,55 );
663 memdc.DrawLine( 12,60,14,60 );
664 memdc.DrawLine( 12,65,15,65 );
665
666 memdc.SelectObject( wxNullBitmap );
667 dc.DrawBitmap( bitmap, 10, 170 );
668 wxImage image( bitmap );
669 image.Rescale( 60,210 );
670 bitmap = image.ConvertToBitmap();
671 dc.DrawBitmap( bitmap, 50, 170 );
672
673 // test the rectangle outline drawing - there should be one pixel between
674 // the rect and the lines
675 dc.SetPen(*wxWHITE_PEN);
676 dc.SetBrush( *wxTRANSPARENT_BRUSH );
677 dc.DrawRectangle(150, 170, 49, 29);
678 dc.DrawRectangle(200, 170, 49, 29);
679 dc.SetPen(*wxWHITE_PEN);
680 dc.DrawLine(250, 210, 250, 170);
681 dc.DrawLine(260, 200, 150, 200);
682
683 // test the rectangle filled drawing - there should be one pixel between
684 // the rect and the lines
685 dc.SetPen(*wxTRANSPARENT_PEN);
686 dc.SetBrush( *wxWHITE_BRUSH );
687 dc.DrawRectangle(300, 170, 49, 29);
688 dc.DrawRectangle(350, 170, 49, 29);
689 dc.SetPen(*wxWHITE_PEN);
690 dc.DrawLine(400, 170, 400, 210);
691 dc.DrawLine(300, 200, 410, 200);
692
693 // a few more tests of this kind
694 dc.SetPen(*wxRED_PEN);
695 dc.SetBrush( *wxWHITE_BRUSH );
696 dc.DrawRectangle(300, 220, 1, 1);
697 dc.DrawRectangle(310, 220, 2, 2);
698 dc.DrawRectangle(320, 220, 3, 3);
699 dc.DrawRectangle(330, 220, 4, 4);
700
701 dc.SetPen(*wxTRANSPARENT_PEN);
702 dc.SetBrush( *wxWHITE_BRUSH );
703 dc.DrawRectangle(300, 230, 1, 1);
704 dc.DrawRectangle(310, 230, 2, 2);
705 dc.DrawRectangle(320, 230, 3, 3);
706 dc.DrawRectangle(330, 230, 4, 4);
707
708 // and now for filled rect with outline
709 dc.SetPen(*wxRED_PEN);
710 dc.SetBrush( *wxWHITE_BRUSH );
711 dc.DrawRectangle(500, 170, 49, 29);
712 dc.DrawRectangle(550, 170, 49, 29);
713 dc.SetPen(*wxWHITE_PEN);
714 dc.DrawLine(600, 170, 600, 210);
715 dc.DrawLine(500, 200, 610, 200);
716
717 // test the rectangle outline drawing - there should be one pixel between
718 // the rect and the lines
719 dc.SetPen(*wxWHITE_PEN);
720 dc.SetBrush( *wxTRANSPARENT_BRUSH );
721 dc.DrawRoundedRectangle(150, 270, 49, 29, 6);
722 dc.DrawRoundedRectangle(200, 270, 49, 29, 6);
723 dc.SetPen(*wxWHITE_PEN);
724 dc.DrawLine(250, 270, 250, 310);
725 dc.DrawLine(150, 300, 260, 300);
726
727 // test the rectangle filled drawing - there should be one pixel between
728 // the rect and the lines
729 dc.SetPen(*wxTRANSPARENT_PEN);
730 dc.SetBrush( *wxWHITE_BRUSH );
731 dc.DrawRoundedRectangle(300, 270, 49, 29, 6);
732 dc.DrawRoundedRectangle(350, 270, 49, 29, 6);
733 dc.SetPen(*wxWHITE_PEN);
734 dc.DrawLine(400, 270, 400, 310);
735 dc.DrawLine(300, 300, 410, 300);
736
737 // Added by JACS to demonstrate bizarre behaviour.
738 // With a size of 70, we get a missing red RHS,
739 // and the hight is too small, so we get yellow
740 // showing. With a size of 40, it draws as expected:
741 // it just shows a white rectangle with red outline.
742 int totalWidth = 70;
743 int totalHeight = 70;
744 wxBitmap bitmap2(totalWidth, totalHeight);
745
746 wxMemoryDC memdc2;
747 memdc2.SelectObject(bitmap2);
748
749 wxBrush yellowBrush(wxColour(255, 255, 0), wxSOLID);
750 memdc2.SetBackground(yellowBrush);
751 memdc2.Clear();
752
753 wxPen yellowPen(wxColour(255, 255, 0), 1, wxSOLID);
754
755 // Now draw a white rectangle with red outline. It should
756 // entirely eclipse the yellow background.
757 memdc2.SetPen(*wxRED_PEN);
758 memdc2.SetBrush(*wxWHITE_BRUSH);
759
760 memdc2.DrawRectangle(0, 0, totalWidth, totalHeight);
761
762 memdc2.SetPen(wxNullPen);
763 memdc2.SetBrush(wxNullBrush);
764 memdc2.SelectObject(wxNullBitmap);
765
766 dc.DrawBitmap(bitmap2, 500, 270);
767
768 // Repeat, but draw directly on dc
769 // Draw a yellow rectangle filling the bitmap
770
771 x = 600; int y = 270;
772 dc.SetPen(yellowPen);
773 dc.SetBrush(yellowBrush);
774 dc.DrawRectangle(x, y, totalWidth, totalHeight);
775
776 // Now draw a white rectangle with red outline. It should
777 // entirely eclipse the yellow background.
778 dc.SetPen(*wxRED_PEN);
779 dc.SetBrush(*wxWHITE_BRUSH);
780
781 dc.DrawRectangle(x, y, totalWidth, totalHeight);
782 }
783
784 void MyCanvas::DrawText(wxDC& dc)
785 {
786 // set underlined font for testing
787 dc.SetFont( wxFont(12, wxMODERN, wxNORMAL, wxNORMAL, TRUE) );
788 dc.DrawText( "This is text", 110, 10 );
789 dc.DrawRotatedText( "That is text", 20, 10, -45 );
790
791 dc.SetFont( *wxNORMAL_FONT );
792
793 wxString text;
794 dc. SetBackgroundMode(wxTRANSPARENT);
795
796 for ( int n = -180; n < 180; n += 30 )
797 {
798 text.Printf(" %d rotated text", n);
799 dc.DrawRotatedText(text , 400, 400, n);
800 }
801
802 dc.SetFont( wxFont( 18, wxSWISS, wxNORMAL, wxNORMAL ) );
803
804 dc.DrawText( "This is Swiss 18pt text.", 110, 40 );
805
806 long length;
807 long height;
808 long descent;
809 dc.GetTextExtent( "This is Swiss 18pt text.", &length, &height, &descent );
810 text.Printf( "Dimensions are length %ld, height %ld, descent %ld", length, height, descent );
811 dc.DrawText( text, 110, 80 );
812
813 text.Printf( "CharHeight() returns: %d", dc.GetCharHeight() );
814 dc.DrawText( text, 110, 120 );
815
816 dc.DrawRectangle( 100, 40, 4, height );
817 }
818
819 static const struct
820 {
821 const wxChar *name;
822 int rop;
823 } rasterOperations[] =
824 {
825 { "wxAND", wxAND },
826 { "wxAND_INVERT", wxAND_INVERT },
827 { "wxAND_REVERSE", wxAND_REVERSE },
828 { "wxCLEAR", wxCLEAR },
829 { "wxCOPY", wxCOPY },
830 { "wxEQUIV", wxEQUIV },
831 { "wxINVERT", wxINVERT },
832 { "wxNAND", wxNAND },
833 { "wxNO_OP", wxNO_OP },
834 { "wxOR", wxOR },
835 { "wxOR_INVERT", wxOR_INVERT },
836 { "wxOR_REVERSE", wxOR_REVERSE },
837 { "wxSET", wxSET },
838 { "wxSRC_INVERT", wxSRC_INVERT },
839 { "wxXOR", wxXOR },
840 };
841
842 void MyCanvas::DrawImages(wxDC& dc)
843 {
844 dc.DrawText("original image", 0, 0);
845 dc.DrawBitmap(gs_bmpNoMask, 0, 20, 0);
846 dc.DrawText("with colour mask", 0, 100);
847 dc.DrawBitmap(gs_bmpWithColMask, 0, 120, TRUE);
848 dc.DrawText("the mask image", 0, 200);
849 dc.DrawBitmap(gs_bmpMask, 0, 220, 0);
850 dc.DrawText("masked image", 0, 300);
851 dc.DrawBitmap(gs_bmpWithMask, 0, 320, TRUE);
852
853 int cx = gs_bmpWithColMask.GetWidth(),
854 cy = gs_bmpWithColMask.GetHeight();
855
856 wxMemoryDC memDC;
857 for ( size_t n = 0; n < WXSIZEOF(rasterOperations); n++ )
858 {
859 wxCoord x = 120 + 150*(n%4),
860 y = 20 + 100*(n/4);
861
862 dc.DrawText(rasterOperations[n].name, x, y - 20);
863 memDC.SelectObject(gs_bmpWithColMask);
864 dc.Blit(x, y, cx, cy, &memDC, 0, 0, rasterOperations[n].rop, TRUE);
865 }
866 }
867
868 void MyCanvas::DrawWithLogicalOps(wxDC& dc)
869 {
870 static const wxCoord w = 60;
871 static const wxCoord h = 60;
872
873 // reuse the text colour here
874 dc.SetPen(wxPen(m_owner->m_colourForeground, 1, wxSOLID));
875 dc.SetBrush(*wxTRANSPARENT_BRUSH);
876
877 size_t n;
878 for ( n = 0; n < WXSIZEOF(rasterOperations); n++ )
879 {
880 wxCoord x = 20 + 150*(n%4),
881 y = 20 + 100*(n/4);
882
883 dc.DrawText(rasterOperations[n].name, x, y - 20);
884 dc.SetLogicalFunction(rasterOperations[n].rop);
885 dc.DrawRectangle(x, y, w, h);
886 dc.DrawLine(x, y, x + w, y + h);
887 dc.DrawLine(x + w, y, x, y + h);
888 }
889
890 // now some filled rectangles
891 dc.SetBrush(wxBrush(m_owner->m_colourForeground, wxSOLID));
892
893 for ( n = 0; n < WXSIZEOF(rasterOperations); n++ )
894 {
895 wxCoord x = 20 + 150*(n%4),
896 y = 500 + 100*(n/4);
897
898 dc.DrawText(rasterOperations[n].name, x, y - 20);
899 dc.SetLogicalFunction(rasterOperations[n].rop);
900 dc.DrawRectangle(x, y, w, h);
901 }
902 }
903
904 void MyCanvas::DrawRegions(wxDC& dc)
905 {
906 dc.SetBrush( *wxWHITE_BRUSH );
907 dc.SetPen( *wxTRANSPARENT_PEN );
908 dc.DrawRectangle( 10,10,310,310 );
909
910 dc.SetClippingRegion( 20,20,100,270 );
911
912 dc.SetBrush( *wxRED_BRUSH );
913 dc.DrawRectangle( 10,10,310,310 );
914
915 dc.SetClippingRegion( 20,20,100,100 );
916
917 dc.SetBrush( *wxCYAN_BRUSH );
918 dc.DrawRectangle( 10,10,310,310 );
919
920 dc.DestroyClippingRegion();
921 dc.SetClippingRegion( 120,30,100,270 );
922
923 dc.SetBrush( *wxGREY_BRUSH );
924 dc.DrawRectangle( 10,10,310,310 );
925
926 if (m_smile_bmp.Ok())
927 {
928 dc.DrawBitmap( m_smile_bmp, 140, 20, TRUE );
929 dc.DrawBitmap( m_smile_bmp, 140, 290, TRUE );
930 dc.DrawBitmap( m_smile_bmp, 110, 80, TRUE );
931 dc.DrawBitmap( m_smile_bmp, 210, 80, TRUE );
932 }
933 }
934
935 void MyCanvas::OnPaint(wxPaintEvent &WXUNUSED(event))
936 {
937 wxPaintDC dc(this);
938 PrepareDC(dc);
939 m_owner->PrepareDC(dc);
940
941 dc.SetBackgroundMode( m_owner->m_backgroundMode );
942 if ( m_owner->m_backgroundBrush.Ok() )
943 dc.SetBackground( m_owner->m_backgroundBrush );
944 if ( m_owner->m_colourForeground.Ok() )
945 dc.SetTextForeground( m_owner->m_colourForeground );
946 if ( m_owner->m_colourBackground.Ok() )
947 dc.SetTextBackground( m_owner->m_colourBackground );
948
949 if ( m_owner->m_textureBackground) {
950 if ( ! m_owner->m_backgroundBrush.Ok() ) {
951 wxBrush b(wxColour(0,128,0), wxSOLID);
952 dc.SetBackground(b);
953 }
954 }
955
956 dc.Clear();
957
958 if ( m_owner->m_textureBackground) {
959 dc.SetPen(*wxMEDIUM_GREY_PEN);
960 for (int i=0; i<200; i++)
961 dc.DrawLine(0, i*10, i*10, 0);
962 }
963
964 switch ( m_show )
965 {
966 case Show_Default:
967 DrawDefault(dc);
968 break;
969
970 case Show_Regions:
971 DrawRegions(dc);
972 break;
973
974 case Show_Text:
975 DrawText(dc);
976 break;
977
978 case Show_Lines:
979 DrawTestLines( 0, 100, 0, dc );
980 DrawTestLines( 0, 300, 1, dc );
981 DrawTestLines( 0, 500, 2, dc );
982 DrawTestLines( 0, 700, 6, dc );
983 break;
984
985 case Show_Polygons:
986 DrawTestPoly( 0, 100, dc, 0 );
987 /*
988 DrawTestPoly( 33, 500, dc, 1 );
989 DrawTestPoly( 43, 1000, dc, 2 );
990 */
991 break;
992
993 case Show_Mask:
994 DrawImages(dc);
995 break;
996
997 case Show_Ops:
998 DrawWithLogicalOps(dc);
999 break;
1000 }
1001 }
1002
1003 void MyCanvas::OnMouseMove(wxMouseEvent &event)
1004 {
1005 wxClientDC dc(this);
1006 PrepareDC(dc);
1007 m_owner->PrepareDC(dc);
1008
1009 wxPoint pos = event.GetPosition();
1010 long x = dc.DeviceToLogicalX( pos.x );
1011 long y = dc.DeviceToLogicalY( pos.y );
1012 wxString str;
1013 str.Printf( "Current mouse position: %d,%d", (int)x, (int)y );
1014 m_owner->SetStatusText( str );
1015 }
1016
1017 // ----------------------------------------------------------------------------
1018 // MyFrame
1019 // ----------------------------------------------------------------------------
1020
1021 // the event tables connect the wxWindows events with the functions (event
1022 // handlers) which process them. It can be also done at run-time, but for the
1023 // simple menu events like this the static method is much simpler.
1024 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
1025 EVT_MENU (File_Quit, MyFrame::OnQuit)
1026 EVT_MENU (File_About, MyFrame::OnAbout)
1027
1028 EVT_MENU_RANGE(MenuShow_First, MenuShow_Last, MyFrame::OnShow)
1029
1030 EVT_MENU_RANGE(MenuOption_First, MenuOption_Last, MyFrame::OnOption)
1031 END_EVENT_TABLE()
1032
1033 // frame constructor
1034 MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
1035 : wxFrame((wxFrame *)NULL, -1, title, pos, size)
1036 {
1037 // set the frame icon
1038 SetIcon(wxICON(mondrian));
1039
1040 wxMenu *menuFile = new wxMenu;
1041 menuFile->Append(File_ShowDefault, "&Default screen\tF1");
1042 menuFile->Append(File_ShowText, "&Text screen\tF2");
1043 menuFile->Append(File_ShowLines, "&Lines screen\tF3");
1044 menuFile->Append(File_ShowPolygons, "&Polygons screen\tF4");
1045 menuFile->Append(File_ShowMask, "wx&Mask screen\tF5");
1046 menuFile->Append(File_ShowOps, "&ROP screen\tF6");
1047 menuFile->Append(File_ShowRegions, "Re&gions screen\tF6");
1048 menuFile->AppendSeparator();
1049 menuFile->Append(File_About, "&About...\tCtrl-A", "Show about dialog");
1050 menuFile->AppendSeparator();
1051 menuFile->Append(File_Quit, "E&xit\tAlt-X", "Quit this program");
1052
1053 wxMenu *menuMapMode = new wxMenu;
1054 menuMapMode->Append( MapMode_Text, "&TEXT map mode" );
1055 menuMapMode->Append( MapMode_Lometric, "&LOMETRIC map mode" );
1056 menuMapMode->Append( MapMode_Twips, "T&WIPS map mode" );
1057 menuMapMode->Append( MapMode_Points, "&POINTS map mode" );
1058 menuMapMode->Append( MapMode_Metric, "&METRIC map mode" );
1059
1060 wxMenu *menuUserScale = new wxMenu;
1061 menuUserScale->Append( UserScale_StretchHoriz, "Stretch horizontally\tCtrl-H" );
1062 menuUserScale->Append( UserScale_ShrinkHoriz, "Shrink horizontally\tCtrl-G" );
1063 menuUserScale->Append( UserScale_StretchVertic, "Stretch vertically\tCtrl-V" );
1064 menuUserScale->Append( UserScale_ShrinkVertic, "Shrink vertically\tCtrl-W" );
1065 menuUserScale->AppendSeparator();
1066 menuUserScale->Append( UserScale_Restore, "Restore to normal\tCtrl-0" );
1067
1068 wxMenu *menuAxis = new wxMenu;
1069 menuAxis->Append( AxisMirror_Horiz, "Mirror horizontally\tCtrl-M", "", TRUE );
1070 menuAxis->Append( AxisMirror_Vertic, "Mirror vertically\tCtrl-N", "", TRUE );
1071
1072 wxMenu *menuLogical = new wxMenu;
1073 menuLogical->Append( LogicalOrigin_MoveDown, "Move &down\tCtrl-D" );
1074 menuLogical->Append( LogicalOrigin_MoveUp, "Move &up\tCtrl-U" );
1075 menuLogical->Append( LogicalOrigin_MoveLeft, "Move &right\tCtrl-L" );
1076 menuLogical->Append( LogicalOrigin_MoveRight, "Move &left\tCtrl-R" );
1077
1078 wxMenu *menuColour = new wxMenu;
1079 menuColour->Append( Colour_TextForeground, "Text foreground..." );
1080 menuColour->Append( Colour_TextBackground, "Text background..." );
1081 menuColour->Append( Colour_Background, "Background colour..." );
1082 menuColour->Append( Colour_BackgroundMode, "Opaque/transparent\tCtrl-B", "", TRUE );
1083 menuColour->Append( Colour_TextureBackgound, "Draw textured background\tCtrl-T", "", TRUE);
1084
1085 // now append the freshly created menu to the menu bar...
1086 wxMenuBar *menuBar = new wxMenuBar;
1087 menuBar->Append(menuFile, "&File");
1088 menuBar->Append(menuMapMode, "&MapMode");
1089 menuBar->Append(menuUserScale, "&UserScale");
1090 menuBar->Append(menuAxis, "&Axis");
1091 menuBar->Append(menuLogical, "&LogicalOrigin");
1092 menuBar->Append(menuColour, "&Colours");
1093
1094 // ... and attach this menu bar to the frame
1095 SetMenuBar(menuBar);
1096
1097 // create a status bar just for fun (by default with 1 pane only)
1098 CreateStatusBar(2);
1099 SetStatusText("Welcome to wxWindows!");
1100
1101 m_mapMode = wxMM_TEXT;
1102 m_xUserScale = 1.0;
1103 m_yUserScale = 1.0;
1104 m_xLogicalOrigin = 0;
1105 m_yLogicalOrigin = 0;
1106 m_xAxisReversed =
1107 m_yAxisReversed = FALSE;
1108 m_backgroundMode = wxSOLID;
1109 m_colourForeground = *wxRED;
1110 m_colourBackground = *wxBLUE;
1111 m_textureBackground = FALSE;
1112
1113 m_canvas = new MyCanvas( this );
1114 m_canvas->SetScrollbars( 10, 10, 100, 240 );
1115 }
1116
1117 // event handlers
1118
1119 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
1120 {
1121 // TRUE is to force the frame to close
1122 Close(TRUE);
1123 }
1124
1125 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
1126 {
1127 wxString msg;
1128 msg.Printf( wxT("This is the about dialog of the drawing sample.\n")
1129 wxT("This sample tests various primitive drawing functions\n")
1130 wxT("without any tests to prevent flicker.\n")
1131 wxT("Copyright (c) Robert Roebling 1999")
1132 );
1133
1134 wxMessageBox(msg, "About Drawing", wxOK | wxICON_INFORMATION, this);
1135 }
1136
1137 void MyFrame::OnShow(wxCommandEvent& event)
1138 {
1139 m_canvas->Show((ScreenToShow)(event.GetInt() - MenuShow_First));
1140 }
1141
1142 void MyFrame::OnOption(wxCommandEvent& event)
1143 {
1144 switch (event.GetInt())
1145 {
1146 case MapMode_Text:
1147 m_mapMode = wxMM_TEXT;
1148 break;
1149 case MapMode_Lometric:
1150 m_mapMode = wxMM_LOMETRIC;
1151 break;
1152 case MapMode_Twips:
1153 m_mapMode = wxMM_TWIPS;
1154 break;
1155 case MapMode_Points:
1156 m_mapMode = wxMM_POINTS;
1157 break;
1158 case MapMode_Metric:
1159 m_mapMode = wxMM_METRIC;
1160 break;
1161
1162 case LogicalOrigin_MoveDown:
1163 m_yLogicalOrigin += 10;
1164 break;
1165 case LogicalOrigin_MoveUp:
1166 m_yLogicalOrigin -= 10;
1167 break;
1168 case LogicalOrigin_MoveLeft:
1169 m_xLogicalOrigin += 10;
1170 break;
1171 case LogicalOrigin_MoveRight:
1172 m_xLogicalOrigin -= 10;
1173 break;
1174
1175 case UserScale_StretchHoriz:
1176 m_xUserScale *= 1.10;
1177 break;
1178 case UserScale_ShrinkHoriz:
1179 m_xUserScale /= 1.10;
1180 break;
1181 case UserScale_StretchVertic:
1182 m_yUserScale *= 1.10;
1183 break;
1184 case UserScale_ShrinkVertic:
1185 m_yUserScale /= 1.10;
1186 break;
1187 case UserScale_Restore:
1188 m_xUserScale =
1189 m_yUserScale = 1.0;
1190 break;
1191
1192 case AxisMirror_Vertic:
1193 m_yAxisReversed = !m_yAxisReversed;
1194 break;
1195 case AxisMirror_Horiz:
1196 m_xAxisReversed = !m_xAxisReversed;
1197 break;
1198
1199 case Colour_TextForeground:
1200 m_colourForeground = SelectColour();
1201 break;
1202 case Colour_TextBackground:
1203 m_colourBackground = SelectColour();
1204 break;
1205 case Colour_Background:
1206 {
1207 wxColour col = SelectColour();
1208 if ( col.Ok() )
1209 {
1210 m_backgroundBrush.SetColour(col);
1211 }
1212 }
1213 break;
1214 case Colour_BackgroundMode:
1215 m_backgroundMode = m_backgroundMode == wxSOLID ? wxTRANSPARENT
1216 : wxSOLID;
1217 break;
1218
1219 case Colour_TextureBackgound:
1220 m_textureBackground = ! m_textureBackground;
1221 break;
1222
1223 default:
1224 // skip Refresh()
1225 return;
1226 }
1227
1228 m_canvas->Refresh();
1229 }
1230
1231 void MyFrame::PrepareDC(wxDC& dc)
1232 {
1233 dc.SetMapMode( m_mapMode );
1234 dc.SetUserScale( m_xUserScale, m_yUserScale );
1235 dc.SetLogicalOrigin( m_xLogicalOrigin, m_yLogicalOrigin );
1236 dc.SetAxisOrientation( !m_xAxisReversed, m_yAxisReversed );
1237 }
1238
1239 wxColour MyFrame::SelectColour()
1240 {
1241 wxColour col;
1242 wxColourData data;
1243 wxColourDialog dialog(this, &data);
1244
1245 if ( dialog.ShowModal() == wxID_OK )
1246 {
1247 col = dialog.GetColourData().GetColour();
1248 }
1249
1250 return col;
1251 }
wxWidgets (Impactor)