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1 /*
2 * Program: image
3 *
4 * Author: Robert Roebling
5 *
6 * Copyright: (C) 1998, Robert Roebling
7 *
8 */
9
10 // For compilers that support precompilation, includes "wx/wx.h".
11 #include "wx/wxprec.h"
12
13 #ifdef __BORLANDC__
14 #pragma hdrstop
15 #endif
16
17 #ifndef WX_PRECOMP
18 #include "wx/wx.h"
19 #endif
20
21 #include "wx/image.h"
22 #include "wx/file.h"
23 #include "wx/mstream.h"
24 #include "wx/wfstream.h"
25 #include "wx/quantize.h"
26
27 #if wxUSE_CLIPBOARD
28 #include "wx/dataobj.h"
29 #include "wx/clipbrd.h"
30 #endif // wxUSE_CLIPBOARD
31
32 #include "smile.xbm"
33 #include "smile.xpm"
34
35 #if defined(__WXMSW__) || defined(__WXMAC__)
36 #ifdef wxHAVE_RAW_BITMAP
37 #include "wx/rawbmp.h"
38 #endif
39 #endif
40
41 // derived classes
42
43 class MyFrame;
44 class MyApp;
45
46 // MyCanvas
47
48 class MyCanvas: public wxScrolledWindow
49 {
50 public:
51 MyCanvas() {}
52 MyCanvas( wxWindow *parent, wxWindowID, const wxPoint &pos, const wxSize &size );
53 ~MyCanvas();
54 void OnPaint( wxPaintEvent &event );
55 void CreateAntiAliasedBitmap();
56
57 wxBitmap *my_horse_png;
58 wxBitmap *my_horse_jpeg;
59 wxBitmap *my_horse_gif;
60 wxBitmap *my_horse_bmp;
61 wxBitmap *my_horse_bmp2;
62 wxBitmap *my_horse_pcx;
63 wxBitmap *my_horse_pnm;
64 wxBitmap *my_horse_tiff;
65 wxBitmap *my_horse_xpm;
66 wxBitmap *my_horse_ico32;
67 wxBitmap *my_horse_ico16;
68 wxBitmap *my_horse_ico;
69 wxBitmap *my_horse_cur;
70 wxBitmap *my_horse_ani;
71
72 wxBitmap *my_smile_xbm;
73 wxBitmap *my_square;
74 wxBitmap *my_anti;
75
76 int xH, yH ;
77 int m_ani_images ;
78
79 protected:
80 wxBitmap m_bmpSmileXpm;
81 wxIcon m_iconSmileXpm;
82
83 private:
84 DECLARE_DYNAMIC_CLASS(MyCanvas)
85 DECLARE_EVENT_TABLE()
86 };
87
88
89 const int nChoices = 8 ;
90 static const wxString bppchoices[nChoices] =
91 {
92 _T("1 bpp color"),
93 _T("1 bpp B&W"),
94 _T("4 bpp color"),
95 _T("8 bpp color"),
96 _T("8 bpp greyscale"),
97 _T("8 bpp red"),
98 _T("8 bpp own palette"),
99 _T("24 bpp")
100 };
101
102 static const int bppvalues[nChoices] =
103 {
104 wxBMP_1BPP,
105 wxBMP_1BPP_BW,
106 wxBMP_4BPP,
107 wxBMP_8BPP,
108 wxBMP_8BPP_GREY,
109 wxBMP_8BPP_RED,
110 wxBMP_8BPP_PALETTE,
111 wxBMP_24BPP
112 };
113
114 // MyFrame
115
116
117 class MyFrame: public wxFrame
118 {
119 public:
120 MyFrame();
121
122 void OnAbout( wxCommandEvent &event );
123 void OnNewFrame( wxCommandEvent &event );
124 #ifdef wxHAVE_RAW_BITMAP
125 void OnTestRawBitmap( wxCommandEvent &event );
126 #endif // wxHAVE_RAW_BITMAP
127 void OnQuit( wxCommandEvent &event );
128
129 #if wxUSE_CLIPBOARD
130 void OnCopy(wxCommandEvent& event);
131 void OnPaste(wxCommandEvent& event);
132 #endif // wxUSE_CLIPBOARD
133
134 MyCanvas *m_canvas;
135
136 private:
137 DECLARE_DYNAMIC_CLASS(MyFrame)
138 DECLARE_EVENT_TABLE()
139 };
140
141 class MyImageFrame : public wxFrame
142 {
143 public:
144 MyImageFrame(wxFrame *parent, const wxBitmap& bitmap)
145 : wxFrame(parent, -1, _T("Double click to save"),
146 wxDefaultPosition, wxDefaultSize,
147 wxCAPTION | wxSYSTEM_MENU | wxCLOSE_BOX),
148 m_bitmap(bitmap)
149 {
150 SetClientSize(bitmap.GetWidth(), bitmap.GetHeight());
151 }
152
153 void OnEraseBackground(wxEraseEvent& WXUNUSED(event))
154 {
155 // do nothing here to be able to see how transparent images are shown
156 }
157
158 void OnPaint(wxPaintEvent& WXUNUSED(event))
159 {
160 wxPaintDC dc( this );
161 dc.DrawBitmap( m_bitmap, 0, 0, TRUE /* use mask */ );
162 }
163
164 void OnSave(wxMouseEvent& WXUNUSED(event))
165 {
166 wxImage image = m_bitmap.ConvertToImage();
167
168 int bppselection = wxGetSingleChoiceIndex(_T("Set BMP BPP"),
169 _T("Set BMP BPP"),
170 nChoices,
171 bppchoices,
172 this);
173 if ( bppselection == -1 )
174 {
175 // cancelled
176 return;
177 }
178
179 image.SetOption(wxIMAGE_OPTION_BMP_FORMAT, bppvalues[bppselection]);
180
181 wxString deffilename = bppchoices[bppselection];
182 deffilename.Replace(wxT(" "), wxT("_"));
183 deffilename += wxT(".bmp");
184 wxString savefilename = wxFileSelector( wxT("Save Image"),
185 wxT(""),
186 deffilename,
187 (const wxChar *)NULL,
188 wxT("BMP files (*.bmp)|*.bmp|")
189 wxT("PNG files (*.png)|*.png|")
190 wxT("JPEG files (*.jpg)|*.jpg|")
191 wxT("GIF files (*.gif)|*.gif|")
192 wxT("TIFF files (*.tif)|*.tif|")
193 wxT("PCX files (*.pcx)|*.pcx|")
194 wxT("ICO files (*.ico)|*.ico|")
195 wxT("CUR files (*.cur)|*.cur"),
196 wxSAVE);
197
198 if ( savefilename.empty() )
199 return;
200
201 if ( image.GetOptionInt(wxIMAGE_OPTION_BMP_FORMAT) == wxBMP_8BPP_PALETTE )
202 {
203 unsigned char *cmap = new unsigned char [256];
204 for ( int i = 0; i < 256; i++ )
205 cmap[i] = i;
206 image.SetPalette(wxPalette(256, cmap, cmap, cmap));
207
208 delete cmap;
209 }
210
211 bool loaded;
212 wxString extension = savefilename.AfterLast('.').Lower();
213
214 if (extension == _T("cur"))
215 {
216 image.Rescale(32,32);
217 image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_X, 0);
218 image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y, 0);
219 // This shows how you can save an image with explicitly
220 // specified image format:
221 loaded = image.SaveFile(savefilename, wxBITMAP_TYPE_CUR);
222 }
223 else
224 {
225 // This one guesses image format from filename extension
226 // (it may fail if the extension is not recognized):
227 loaded = image.SaveFile(savefilename);
228 }
229
230 if ( !loaded )
231 wxMessageBox(_T("No handler for this file type."),
232 _T("File was not saved"),
233 wxOK|wxCENTRE, this);
234 }
235
236 private:
237 wxBitmap m_bitmap;
238
239 DECLARE_EVENT_TABLE()
240 };
241
242 #ifdef wxHAVE_RAW_BITMAP
243
244 #include "wx/rawbmp.h"
245
246 class MyRawBitmapFrame : public wxFrame
247 {
248 public:
249 enum
250 {
251 BORDER = 15,
252 SIZE = 150,
253 REAL_SIZE = SIZE - 2*BORDER
254 };
255
256 MyRawBitmapFrame(wxFrame *parent)
257 : wxFrame(parent, -1, _T("Raw bitmaps (how exciting)")),
258 m_bitmap(SIZE, SIZE, 32)
259 {
260 SetClientSize(SIZE, SIZE);
261
262 // another possibility: wxNativePixelData (don't forget to remove code
263 // setting alpha in the loop below then)
264 typedef wxAlphaPixelData Data;
265
266 Data data(m_bitmap, wxPoint(BORDER, BORDER), wxSize(REAL_SIZE, REAL_SIZE));
267 if ( !data )
268 {
269 wxLogError(_T("Failed to gain raw access to bitmap data"));
270 return;
271 }
272
273 data.UseAlpha();
274
275 Data::Iterator p(data);
276
277 for ( int y = 0; y < REAL_SIZE; ++y )
278 {
279 Data::Iterator rowStart = p;
280
281 int r = y < REAL_SIZE/3 ? 255 : 0,
282 g = (REAL_SIZE/3 <= y) && (y < 2*(REAL_SIZE/3)) ? 255 : 0,
283 b = 2*(REAL_SIZE/3) <= y ? 255 : 0;
284
285 for ( int x = 0; x < REAL_SIZE; ++x )
286 {
287 p.Red() = r;
288 p.Green() = g;
289 p.Blue() = b;
290 p.Alpha() = (Data::Iterator::ChannelType)((x*255.)/REAL_SIZE);
291
292 ++p; // same as p.OffsetX(1)
293 }
294
295 p = rowStart;
296 p.OffsetY(data, 1);
297 }
298 }
299
300 void OnPaint(wxPaintEvent& WXUNUSED(event))
301 {
302 wxPaintDC dc( this );
303 dc.DrawText(_T("This is alpha and raw bitmap test"), 0, BORDER);
304 dc.DrawText(_T("This is alpha and raw bitmap test"), 0, SIZE/2 - BORDER);
305 dc.DrawText(_T("This is alpha and raw bitmap test"), 0, SIZE - 2*BORDER);
306 dc.DrawBitmap( m_bitmap, 0, 0, TRUE /* use mask */ );
307 }
308
309 private:
310 wxBitmap m_bitmap;
311
312 DECLARE_EVENT_TABLE()
313 };
314
315 #endif // wxHAVE_RAW_BITMAP
316
317 // MyApp
318
319 class MyApp: public wxApp
320 {
321 public:
322 virtual bool OnInit();
323 };
324
325 // main program
326
327 IMPLEMENT_APP(MyApp)
328
329 // MyCanvas
330
331 IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxScrolledWindow)
332
333 BEGIN_EVENT_TABLE(MyImageFrame, wxFrame)
334 EVT_ERASE_BACKGROUND(MyImageFrame::OnEraseBackground)
335 EVT_PAINT(MyImageFrame::OnPaint)
336 EVT_LEFT_DCLICK(MyImageFrame::OnSave)
337 END_EVENT_TABLE()
338
339 #ifdef wxHAVE_RAW_BITMAP
340
341 BEGIN_EVENT_TABLE(MyRawBitmapFrame, wxFrame)
342 EVT_PAINT(MyRawBitmapFrame::OnPaint)
343 END_EVENT_TABLE()
344
345 #endif // wxHAVE_RAW_BITMAP
346
347 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
348 EVT_PAINT(MyCanvas::OnPaint)
349 END_EVENT_TABLE()
350
351 MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
352 const wxPoint &pos, const wxSize &size )
353 : wxScrolledWindow( parent, id, pos, size, wxSUNKEN_BORDER )
354 , m_bmpSmileXpm((const char **) smile_xpm)
355 , m_iconSmileXpm((const char **) smile_xpm)
356 {
357 my_horse_png = (wxBitmap*) NULL;
358 my_horse_jpeg = (wxBitmap*) NULL;
359 my_horse_gif = (wxBitmap*) NULL;
360 my_horse_bmp = (wxBitmap*) NULL;
361 my_horse_bmp2 = (wxBitmap*) NULL;
362 my_horse_pcx = (wxBitmap*) NULL;
363 my_horse_pnm = (wxBitmap*) NULL;
364 my_horse_tiff = (wxBitmap*) NULL;
365 my_horse_xpm = (wxBitmap*) NULL;
366 my_horse_ico32 = (wxBitmap*) NULL;
367 my_horse_ico16 = (wxBitmap*) NULL;
368 my_horse_ico = (wxBitmap*) NULL;
369 my_horse_cur = (wxBitmap*) NULL;
370 my_horse_ani = (wxBitmap*) NULL;
371
372 my_smile_xbm = (wxBitmap*) NULL;
373 my_square = (wxBitmap*) NULL;
374 my_anti = (wxBitmap*) NULL;
375
376 m_ani_images = 0 ;
377
378 SetBackgroundColour(* wxWHITE);
379
380 wxBitmap bitmap( 100, 100 );
381
382 wxMemoryDC dc;
383 dc.SelectObject( bitmap );
384 dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) );
385 dc.SetPen( *wxBLACK_PEN );
386 dc.DrawRectangle( 0, 0, 100, 100 );
387 dc.SetBrush( *wxWHITE_BRUSH );
388 dc.DrawRectangle( 20, 20, 60, 60 );
389 dc.SelectObject( wxNullBitmap );
390
391 // try to find the directory with our images
392 wxString dir;
393 if ( wxFile::Exists(wxT("./horse.png")) )
394 dir = wxT("./");
395 else if ( wxFile::Exists(wxT("../horse.png")) )
396 dir = wxT("../");
397 else
398 wxLogWarning(wxT("Can't find image files in either '.' or '..'!"));
399
400 wxImage image = bitmap.ConvertToImage();
401
402 #if wxUSE_LIBPNG
403 if ( !image.SaveFile( dir + _T("test.png"), wxBITMAP_TYPE_PNG ))
404 wxLogError(wxT("Can't save file"));
405
406 image.Destroy();
407
408 if ( image.LoadFile( dir + _T("test.png") ) )
409 my_square = new wxBitmap( image );
410
411 image.Destroy();
412
413 if ( !image.LoadFile( dir + _T("horse.png")) )
414 wxLogError(wxT("Can't load PNG image"));
415 else
416 my_horse_png = new wxBitmap( image );
417 #endif // wxUSE_LIBPNG
418
419 #if wxUSE_LIBJPEG
420 image.Destroy();
421
422 if ( !image.LoadFile( dir + _T("horse.jpg")) )
423 wxLogError(wxT("Can't load JPG image"));
424 else
425 my_horse_jpeg = new wxBitmap( image );
426 #endif // wxUSE_LIBJPEG
427
428 #if wxUSE_GIF
429 image.Destroy();
430
431 if ( !image.LoadFile( dir + _T("horse.gif" )) )
432 wxLogError(wxT("Can't load GIF image"));
433 else
434 my_horse_gif = new wxBitmap( image );
435 #endif
436
437 #if wxUSE_PCX
438 image.Destroy();
439
440 if ( !image.LoadFile( dir + _T("horse.pcx"), wxBITMAP_TYPE_PCX ) )
441 wxLogError(wxT("Can't load PCX image"));
442 else
443 my_horse_pcx = new wxBitmap( image );
444 #endif
445
446 image.Destroy();
447
448 if ( !image.LoadFile( dir + _T("horse.bmp"), wxBITMAP_TYPE_BMP ) )
449 wxLogError(wxT("Can't load BMP image"));
450 else
451 my_horse_bmp = new wxBitmap( image );
452
453 #if wxUSE_XPM
454 image.Destroy();
455
456 if ( !image.LoadFile( dir + _T("horse.xpm"), wxBITMAP_TYPE_XPM ) )
457 wxLogError(wxT("Can't load XPM image"));
458 else
459 my_horse_xpm = new wxBitmap( image );
460
461 if ( !image.SaveFile( dir + _T("test.xpm"), wxBITMAP_TYPE_XPM ))
462 wxLogError(wxT("Can't save file"));
463 #endif
464
465 #if wxUSE_PNM
466 image.Destroy();
467
468 if ( !image.LoadFile( dir + _T("horse.pnm"), wxBITMAP_TYPE_PNM ) )
469 wxLogError(wxT("Can't load PNM image"));
470 else
471 my_horse_pnm = new wxBitmap( image );
472 #endif
473
474 #if wxUSE_LIBTIFF
475 image.Destroy();
476
477 if ( !image.LoadFile( dir + _T("horse.tif"), wxBITMAP_TYPE_TIF ) )
478 wxLogError(wxT("Can't load TIFF image"));
479 else
480 my_horse_tiff = new wxBitmap( image );
481 #endif
482
483 CreateAntiAliasedBitmap();
484
485 my_smile_xbm = new wxBitmap( (const char*)smile_bits, smile_width,
486 smile_height, 1 );
487
488 // demonstrates XPM automatically using the mask when saving
489 if ( m_bmpSmileXpm.Ok() )
490 m_bmpSmileXpm.SaveFile(_T("saved.xpm"), wxBITMAP_TYPE_XPM);
491
492 #if wxUSE_ICO_CUR
493 image.Destroy();
494
495 if ( !image.LoadFile( dir + _T("horse.ico"), wxBITMAP_TYPE_ICO, 0 ) )
496 wxLogError(wxT("Can't load first ICO image"));
497 else
498 my_horse_ico32 = new wxBitmap( image );
499
500 image.Destroy();
501
502 if ( !image.LoadFile( dir + _T("horse.ico"), wxBITMAP_TYPE_ICO, 1 ) )
503 wxLogError(wxT("Can't load second ICO image"));
504 else
505 my_horse_ico16 = new wxBitmap( image );
506
507 image.Destroy();
508
509 if ( !image.LoadFile( dir + _T("horse.ico") ) )
510 wxLogError(wxT("Can't load best ICO image"));
511 else
512 my_horse_ico = new wxBitmap( image );
513
514 image.Destroy();
515
516 if ( !image.LoadFile( dir + _T("horse.cur"), wxBITMAP_TYPE_CUR ) )
517 wxLogError(wxT("Can't load best ICO image"));
518 else
519 {
520 my_horse_cur = new wxBitmap( image );
521 xH = 30 + image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X) ;
522 yH = 2420 + image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y) ;
523 }
524
525 m_ani_images = wxImage::GetImageCount ( dir + _T("horse3.ani"), wxBITMAP_TYPE_ANI );
526 if (m_ani_images==0)
527 wxLogError(wxT("No ANI-format images found"));
528 else
529 my_horse_ani = new wxBitmap [m_ani_images];
530 int i ;
531 for (i=0; i < m_ani_images; i++)
532 {
533 image.Destroy();
534 if (!image.LoadFile( dir + _T("horse3.ani"), wxBITMAP_TYPE_ANI, i ))
535 {
536 wxString tmp = wxT("Can't load image number ");
537 tmp << i ;
538 wxLogError(tmp);
539 }
540 else
541 my_horse_ani [i] = wxBitmap( image );
542 }
543 #endif // wxUSE_ICO_CUR
544
545 image.Destroy();
546
547 // test image loading from stream
548 wxFile file(dir + _T("horse.bmp"));
549 if ( file.IsOpened() )
550 {
551 off_t len = file.Length();
552 void *data = malloc(len);
553 if ( file.Read(data, len) != len )
554 wxLogError(_T("Reading bitmap file failed"));
555 else
556 {
557 wxMemoryInputStream mis(data, len);
558 if ( !image.LoadFile(mis) )
559 wxLogError(wxT("Can't load BMP image from stream"));
560 else
561 my_horse_bmp2 = new wxBitmap( image );
562 }
563
564 free(data);
565 }
566 }
567
568 MyCanvas::~MyCanvas()
569 {
570 delete my_horse_pnm;
571 delete my_horse_png;
572 delete my_horse_jpeg;
573 delete my_horse_gif;
574 delete my_horse_bmp;
575 delete my_horse_bmp2;
576 delete my_horse_pcx;
577 delete my_horse_tiff;
578 delete my_horse_xpm;
579 delete my_horse_ico32;
580 delete my_horse_ico16;
581 delete my_horse_ico;
582 delete my_horse_cur;
583 delete [] my_horse_ani;
584 delete my_smile_xbm;
585 delete my_square;
586 delete my_anti;
587 }
588
589 void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
590 {
591 wxPaintDC dc( this );
592 PrepareDC( dc );
593
594 dc.DrawText( _T("Loaded image"), 30, 10 );
595 if (my_square && my_square->Ok()) dc.DrawBitmap( *my_square, 30, 30 );
596
597 dc.DrawText( _T("Drawn directly"), 150, 10 );
598 dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) );
599 dc.SetPen( *wxBLACK_PEN );
600 dc.DrawRectangle( 150, 30, 100, 100 );
601 dc.SetBrush( *wxWHITE_BRUSH );
602 dc.DrawRectangle( 170, 50, 60, 60 );
603
604 if (my_anti && my_anti->Ok())
605 dc.DrawBitmap( *my_anti, 280, 30 );
606
607 dc.DrawText( _T("PNG handler"), 30, 135 );
608 if (my_horse_png && my_horse_png->Ok())
609 {
610 dc.DrawBitmap( *my_horse_png, 30, 150 );
611 wxRect rect(0,0,100,100);
612 wxBitmap sub( my_horse_png->GetSubBitmap(rect) );
613 dc.DrawText( _T("GetSubBitmap()"), 280, 190 );
614 dc.DrawBitmap( sub, 280, 210 );
615 }
616
617 dc.DrawText( _T("JPEG handler"), 30, 365 );
618 if (my_horse_jpeg && my_horse_jpeg->Ok())
619 dc.DrawBitmap( *my_horse_jpeg, 30, 380 );
620
621 dc.DrawText( _T("GIF handler"), 30, 595 );
622 if (my_horse_gif && my_horse_gif->Ok())
623 dc.DrawBitmap( *my_horse_gif, 30, 610 );
624
625 dc.DrawText( _T("PCX handler"), 30, 825 );
626 if (my_horse_pcx && my_horse_pcx->Ok())
627 dc.DrawBitmap( *my_horse_pcx, 30, 840 );
628
629 dc.DrawText( _T("BMP handler"), 30, 1055 );
630 if (my_horse_bmp && my_horse_bmp->Ok())
631 dc.DrawBitmap( *my_horse_bmp, 30, 1070 );
632
633 dc.DrawText( _T("BMP read from memory"), 280, 1055 );
634 if (my_horse_bmp2 && my_horse_bmp2->Ok())
635 dc.DrawBitmap( *my_horse_bmp2, 280, 1070 );
636
637 dc.DrawText( _T("PNM handler"), 30, 1285 );
638 if (my_horse_pnm && my_horse_pnm->Ok())
639 dc.DrawBitmap( *my_horse_pnm, 30, 1300 );
640
641 dc.DrawText( _T("TIFF handler"), 30, 1515 );
642 if (my_horse_tiff && my_horse_tiff->Ok())
643 dc.DrawBitmap( *my_horse_tiff, 30, 1530 );
644
645 dc.DrawText( _T("XPM handler"), 30, 1745 );
646 if (my_horse_xpm && my_horse_xpm->Ok())
647 dc.DrawBitmap( *my_horse_xpm, 30, 1760 );
648
649
650 if (my_smile_xbm && my_smile_xbm->Ok())
651 {
652 dc.DrawText( _T("XBM bitmap"), 30, 1975 );
653 dc.DrawText( _T("(green on red)"), 30, 1990 );
654 dc.SetTextForeground( _T("GREEN") );
655 dc.SetTextBackground( _T("RED") );
656 dc.DrawBitmap( *my_smile_xbm, 30, 2010 );
657
658 dc.SetTextForeground( wxT("BLACK") );
659 dc.DrawText( _T("After wxImage conversion"), 150, 1975 );
660 dc.DrawText( _T("(red on white)"), 150, 1990 );
661 dc.SetTextForeground( wxT("RED") );
662 wxImage i = my_smile_xbm->ConvertToImage();
663 i.SetMaskColour( 255, 255, 255 );
664 i.Replace( 0, 0, 0,
665 wxRED_PEN->GetColour().Red(),
666 wxRED_PEN->GetColour().Green(),
667 wxRED_PEN->GetColour().Blue() );
668 dc.DrawBitmap( wxBitmap(i), 150, 2010, TRUE );
669 dc.SetTextForeground( wxT("BLACK") );
670 }
671
672
673 wxBitmap mono( 60,50,1 );
674 wxMemoryDC memdc;
675 memdc.SelectObject( mono );
676 memdc.SetPen( *wxBLACK_PEN );
677 memdc.SetBrush( *wxWHITE_BRUSH );
678 memdc.DrawRectangle( 0,0,60,50 );
679 memdc.SetTextForeground( *wxBLACK );
680 #ifndef __WXGTK20__
681 // I cannot convince GTK2 to draw into mono bitmaps
682 memdc.DrawText( _T("Hi!"), 5, 5 );
683 #endif
684 memdc.SetBrush( *wxBLACK_BRUSH );
685 memdc.DrawRectangle( 33,5,20,20 );
686 memdc.SetPen( *wxRED_PEN );
687 memdc.DrawLine( 5, 42, 50, 42 );
688 memdc.SelectObject( wxNullBitmap );
689
690 if (mono.Ok())
691 {
692 dc.DrawText( _T("Mono bitmap"), 30, 2095 );
693 dc.DrawText( _T("(red on green)"), 30, 2110 );
694 dc.SetTextForeground( wxT("RED") );
695 dc.SetTextBackground( wxT("GREEN") );
696 dc.DrawBitmap( mono, 30, 2130 );
697
698 dc.SetTextForeground( wxT("BLACK") );
699 dc.DrawText( _T("After wxImage conversion"), 150, 2095 );
700 dc.DrawText( _T("(red on white)"), 150, 2110 );
701 dc.SetTextForeground( wxT("RED") );
702 wxImage i = mono.ConvertToImage();
703 i.SetMaskColour( 255,255,255 );
704 i.Replace( 0,0,0,
705 wxRED_PEN->GetColour().Red(),
706 wxRED_PEN->GetColour().Green(),
707 wxRED_PEN->GetColour().Blue() );
708 dc.DrawBitmap( wxBitmap(i), 150, 2130, TRUE );
709 dc.SetTextForeground( wxT("BLACK") );
710 }
711
712 // For testing transparency
713 dc.SetBrush( *wxRED_BRUSH );
714 dc.DrawRectangle( 20, 2220, 560, 68 );
715
716 dc.DrawText(_T("XPM bitmap"), 30, 2230 );
717 if ( m_bmpSmileXpm.Ok() )
718 dc.DrawBitmap(m_bmpSmileXpm, 30, 2250, TRUE);
719
720 dc.DrawText(_T("XPM icon"), 110, 2230 );
721 if ( m_iconSmileXpm.Ok() )
722 dc.DrawIcon(m_iconSmileXpm, 110, 2250);
723
724 // testing icon -> bitmap conversion
725 wxBitmap to_blit( m_iconSmileXpm );
726 if (to_blit.Ok())
727 {
728 dc.DrawText( _T("SubBitmap"), 170, 2230 );
729 wxBitmap sub = to_blit.GetSubBitmap( wxRect(0,0,15,15) );
730 if (sub.Ok())
731 dc.DrawBitmap( sub, 170, 2250, TRUE );
732
733 dc.DrawText( _T("Enlarged"), 250, 2230 );
734 dc.SetUserScale( 1.5, 1.5 );
735 dc.DrawBitmap( to_blit, (int)(250/1.5), (int)(2250/1.5), TRUE );
736 dc.SetUserScale( 2, 2 );
737 dc.DrawBitmap( to_blit, (int)(300/2), (int)(2250/2), TRUE );
738 dc.SetUserScale( 1.0, 1.0 );
739
740 dc.DrawText( _T("Blit"), 400, 2230);
741 wxMemoryDC blit_dc;
742 blit_dc.SelectObject( to_blit );
743 dc.Blit( 400, 2250, to_blit.GetWidth(), to_blit.GetHeight(), &blit_dc, 0, 0, wxCOPY, TRUE );
744 dc.SetUserScale( 1.5, 1.5 );
745 dc.Blit( (int)(450/1.5), (int)(2250/1.5), to_blit.GetWidth(), to_blit.GetHeight(), &blit_dc, 0, 0, wxCOPY, TRUE );
746 dc.SetUserScale( 2, 2 );
747 dc.Blit( (int)(500/2), (int)(2250/2), to_blit.GetWidth(), to_blit.GetHeight(), &blit_dc, 0, 0, wxCOPY, TRUE );
748 dc.SetUserScale( 1.0, 1.0 );
749 }
750
751 dc.DrawText( _T("ICO handler (1st image)"), 30, 2290 );
752 if (my_horse_ico32 && my_horse_ico32->Ok())
753 dc.DrawBitmap( *my_horse_ico32, 30, 2330, TRUE );
754
755 dc.DrawText( _T("ICO handler (2nd image)"), 230, 2290 );
756 if (my_horse_ico16 && my_horse_ico16->Ok())
757 dc.DrawBitmap( *my_horse_ico16, 230, 2330, TRUE );
758
759 dc.DrawText( _T("ICO handler (best image)"), 430, 2290 );
760 if (my_horse_ico && my_horse_ico->Ok())
761 dc.DrawBitmap( *my_horse_ico, 430, 2330, TRUE );
762
763 dc.DrawText( _T("CUR handler"), 30, 2390 );
764 if (my_horse_cur && my_horse_cur->Ok())
765 {
766 dc.DrawBitmap( *my_horse_cur, 30, 2420, TRUE );
767 dc.SetPen (*wxRED_PEN);
768 dc.DrawLine (xH-10,yH,xH+10,yH);
769 dc.DrawLine (xH,yH-10,xH,yH+10);
770 }
771 dc.DrawText( _T("ANI handler"), 230, 2390 );
772 int i ;
773 for (i=0; i < m_ani_images; i ++)
774 if (my_horse_ani[i].Ok())
775 {
776 dc.DrawBitmap( my_horse_ani[i], 230 + i * 2 * my_horse_ani[i].GetWidth() , 2420, TRUE );
777 }
778 }
779
780 void MyCanvas::CreateAntiAliasedBitmap()
781 {
782 wxBitmap bitmap( 300, 300 );
783
784 wxMemoryDC dc;
785
786 dc.SelectObject( bitmap );
787
788 dc.Clear();
789
790 dc.SetFont( wxFont( 24, wxDECORATIVE, wxNORMAL, wxNORMAL) );
791 dc.SetTextForeground( wxT("RED") );
792 dc.DrawText( _T("This is anti-aliased Text."), 20, 20 );
793 dc.DrawText( _T("And a Rectangle."), 20, 60 );
794
795 dc.SetBrush( *wxRED_BRUSH );
796 dc.SetPen( *wxTRANSPARENT_PEN );
797 dc.DrawRoundedRectangle( 20, 100, 200, 180, 20 );
798
799 wxImage original= bitmap.ConvertToImage();
800 wxImage anti( 150, 150 );
801
802 /* This is quite slow, but safe. Use wxImage::GetData() for speed instead. */
803
804 for (int y = 1; y < 149; y++)
805 for (int x = 1; x < 149; x++)
806 {
807 int red = original.GetRed( x*2, y*2 ) +
808 original.GetRed( x*2-1, y*2 ) +
809 original.GetRed( x*2, y*2+1 ) +
810 original.GetRed( x*2+1, y*2+1 );
811 red = red/4;
812
813 int green = original.GetGreen( x*2, y*2 ) +
814 original.GetGreen( x*2-1, y*2 ) +
815 original.GetGreen( x*2, y*2+1 ) +
816 original.GetGreen( x*2+1, y*2+1 );
817 green = green/4;
818
819 int blue = original.GetBlue( x*2, y*2 ) +
820 original.GetBlue( x*2-1, y*2 ) +
821 original.GetBlue( x*2, y*2+1 ) +
822 original.GetBlue( x*2+1, y*2+1 );
823 blue = blue/4;
824 anti.SetRGB( x, y, red, green, blue );
825 }
826 my_anti = new wxBitmap(anti);
827 }
828
829 // MyFrame
830
831 enum
832 {
833 ID_QUIT = 108,
834 ID_ABOUT,
835 ID_NEW,
836 ID_SHOWRAW
837 };
838
839 IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )
840
841 BEGIN_EVENT_TABLE(MyFrame,wxFrame)
842 EVT_MENU (ID_ABOUT, MyFrame::OnAbout)
843 EVT_MENU (ID_QUIT, MyFrame::OnQuit)
844 EVT_MENU (ID_NEW, MyFrame::OnNewFrame)
845 #ifdef wxHAVE_RAW_BITMAP
846 EVT_MENU (ID_SHOWRAW, MyFrame::OnTestRawBitmap)
847 #endif
848
849 #if wxUSE_CLIPBOARD
850 EVT_MENU(wxID_COPY, MyFrame::OnCopy)
851 EVT_MENU(wxID_PASTE, MyFrame::OnPaste)
852 #endif // wxUSE_CLIPBOARD
853 END_EVENT_TABLE()
854
855 MyFrame::MyFrame()
856 : wxFrame( (wxFrame *)NULL, -1, _T("wxImage sample"),
857 wxPoint(20,20), wxSize(470,360) )
858 {
859 wxMenuBar *menu_bar = new wxMenuBar();
860
861 wxMenu *menuImage = new wxMenu;
862 menuImage->Append( ID_NEW, _T("&Show any image...\tCtrl-O"));
863
864 #ifdef wxHAVE_RAW_BITMAP
865 menuImage->Append( ID_SHOWRAW, _T("Test &raw bitmap...\tCtrl-R"));
866 #endif
867 menuImage->AppendSeparator();
868 menuImage->Append( ID_ABOUT, _T("&About..."));
869 menuImage->AppendSeparator();
870 menuImage->Append( ID_QUIT, _T("E&xit\tCtrl-Q"));
871 menu_bar->Append(menuImage, _T("&Image"));
872
873 #if wxUSE_CLIPBOARD
874 wxMenu *menuClipboard = new wxMenu;
875 menuClipboard->Append(wxID_COPY, _T("&Copy test image\tCtrl-C"));
876 menuClipboard->Append(wxID_PASTE, _T("&Paste image\tCtrl-V"));
877 menu_bar->Append(menuClipboard, _T("&Clipboard"));
878 #endif // wxUSE_CLIPBOARD
879
880 SetMenuBar( menu_bar );
881
882 CreateStatusBar(2);
883 int widths[] = { -1, 100 };
884 SetStatusWidths( 2, widths );
885
886 m_canvas = new MyCanvas( this, -1, wxPoint(0,0), wxSize(10,10) );
887
888 // 500 width * 2500 height
889 m_canvas->SetScrollbars( 10, 10, 50, 250 );
890 }
891
892 void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
893 {
894 Close( TRUE );
895 }
896
897 void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) )
898 {
899 (void)wxMessageBox( _T("wxImage demo\n")
900 _T("Robert Roebling (c) 1998,2000"),
901 _T("About wxImage Demo"), wxICON_INFORMATION | wxOK );
902 }
903
904 void MyFrame::OnNewFrame( wxCommandEvent &WXUNUSED(event) )
905 {
906 wxString filename = wxFileSelector(_T("Select image file"));
907 if ( !filename )
908 return;
909
910 wxImage image;
911 if ( !image.LoadFile(filename) )
912 {
913 wxLogError(_T("Couldn't load image from '%s'."), filename.c_str());
914
915 return;
916 }
917
918 (new MyImageFrame(this, wxBitmap(image)))->Show();
919 }
920
921 #ifdef wxHAVE_RAW_BITMAP
922
923 void MyFrame::OnTestRawBitmap( wxCommandEvent &WXUNUSED(event) )
924 {
925 (new MyRawBitmapFrame(this))->Show();
926 }
927
928 #endif // wxHAVE_RAW_BITMAP
929
930 #if wxUSE_CLIPBOARD
931
932 void MyFrame::OnCopy(wxCommandEvent& WXUNUSED(event))
933 {
934 wxBitmapDataObject *dobjBmp = new wxBitmapDataObject;
935 dobjBmp->SetBitmap(*m_canvas->my_horse_png);
936
937 wxTheClipboard->Open();
938
939 if ( !wxTheClipboard->SetData(dobjBmp) )
940 {
941 wxLogError(_T("Failed to copy bitmap to clipboard"));
942 }
943
944 wxTheClipboard->Close();
945 }
946
947 void MyFrame::OnPaste(wxCommandEvent& WXUNUSED(event))
948 {
949 wxBitmapDataObject dobjBmp;
950
951 wxTheClipboard->Open();
952 if ( !wxTheClipboard->GetData(dobjBmp) )
953 {
954 wxLogMessage(_T("No bitmap data in the clipboard"));
955 }
956 else
957 {
958 (new MyImageFrame(this, dobjBmp.GetBitmap()))->Show();
959 }
960 wxTheClipboard->Close();
961 }
962
963 #endif // wxUSE_CLIPBOARD
964
965 //-----------------------------------------------------------------------------
966 // MyApp
967 //-----------------------------------------------------------------------------
968
969 bool MyApp::OnInit()
970 {
971 #if wxUSE_LIBPNG
972 wxImage::AddHandler( new wxPNGHandler );
973 #endif
974
975 #if wxUSE_LIBJPEG
976 wxImage::AddHandler( new wxJPEGHandler );
977 #endif
978
979 #if wxUSE_LIBTIFF
980 wxImage::AddHandler( new wxTIFFHandler );
981 #endif
982
983 #if wxUSE_GIF
984 wxImage::AddHandler( new wxGIFHandler );
985 #endif
986
987 #if wxUSE_PCX
988 wxImage::AddHandler( new wxPCXHandler );
989 #endif
990
991 #if wxUSE_PNM
992 wxImage::AddHandler( new wxPNMHandler );
993 #endif
994
995 #if wxUSE_XPM
996 wxImage::AddHandler( new wxXPMHandler );
997 #endif
998
999 #if wxUSE_ICO_CUR
1000 wxImage::AddHandler( new wxICOHandler );
1001 wxImage::AddHandler( new wxCURHandler );
1002 wxImage::AddHandler( new wxANIHandler );
1003 #endif
1004
1005 wxFrame *frame = new MyFrame();
1006 frame->Show( TRUE );
1007
1008 return TRUE;
1009 }
1010