]> git.saurik.com Git - wxWidgets.git/blob - samples/image/image.cpp
projects / wxWidgets.git / blob
? search:


597314a38233e82c18d58cd5bba465201e3b7a8d
[wxWidgets.git] / samples / image / image.cpp
1 ///////////////////////////////////////////////////////////////////////////////
2 // Name: samples/image/image.cpp
3 // Purpose: sample showing operations with wxImage
4 // Author: Robert Roebling
5 // Modified by:
6 // Created: 1998
7 // RCS-ID: $Id$
8 // Copyright: (c) 1998-2005 Robert Roebling
9 // License: wxWindows licence
10 ///////////////////////////////////////////////////////////////////////////////
11
12 // For compilers that support precompilation, includes "wx/wx.h".
13 #include "wx/wxprec.h"
14
15 #ifdef __BORLANDC__
16 #pragma hdrstop
17 #endif
18
19 #ifndef WX_PRECOMP
20 #include "wx/wx.h"
21 #endif
22
23 #include "wx/image.h"
24 #include "wx/file.h"
25 #include "wx/filename.h"
26 #include "wx/mstream.h"
27 #include "wx/wfstream.h"
28 #include "wx/quantize.h"
29
30 #if wxUSE_CLIPBOARD
31 #include "wx/dataobj.h"
32 #include "wx/clipbrd.h"
33 #endif // wxUSE_CLIPBOARD
34
35 #include "smile.xbm"
36 #include "smile.xpm"
37
38 #if defined(__WXMSW__)
39 #ifdef wxHAVE_RAW_BITMAP
40 #include "wx/rawbmp.h"
41 #endif
42 #endif
43
44 #if defined(__WXMAC__) || defined(__WXGTK__)
45 #define wxHAVE_RAW_BITMAP
46 #include "wx/rawbmp.h"
47 #endif
48
49 // derived classes
50
51 class MyFrame;
52 class MyApp;
53
54 // MyCanvas
55
56 class MyCanvas: public wxScrolledWindow
57 {
58 public:
59 MyCanvas() {}
60 MyCanvas( wxWindow *parent, wxWindowID, const wxPoint &pos, const wxSize &size );
61 ~MyCanvas();
62 void OnPaint( wxPaintEvent &event );
63 void CreateAntiAliasedBitmap();
64
65 wxBitmap *my_horse_png;
66 wxBitmap *my_horse_jpeg;
67 wxBitmap *my_horse_gif;
68 wxBitmap *my_horse_bmp;
69 wxBitmap *my_horse_bmp2;
70 wxBitmap *my_horse_pcx;
71 wxBitmap *my_horse_pnm;
72 wxBitmap *my_horse_tiff;
73 wxBitmap *my_horse_xpm;
74 wxBitmap *my_horse_ico32;
75 wxBitmap *my_horse_ico16;
76 wxBitmap *my_horse_ico;
77 wxBitmap *my_horse_cur;
78 wxBitmap *my_horse_ani;
79
80 wxBitmap *my_smile_xbm;
81 wxBitmap *my_square;
82 wxBitmap *my_anti;
83
84 int xH, yH ;
85 int m_ani_images ;
86
87 protected:
88 wxBitmap m_bmpSmileXpm;
89 wxIcon m_iconSmileXpm;
90
91 private:
92 DECLARE_DYNAMIC_CLASS(MyCanvas)
93 DECLARE_EVENT_TABLE()
94 };
95
96
97 // MyFrame
98
99
100 class MyFrame: public wxFrame
101 {
102 public:
103 MyFrame();
104
105 void OnAbout( wxCommandEvent &event );
106 void OnNewFrame( wxCommandEvent &event );
107 #ifdef wxHAVE_RAW_BITMAP
108 void OnTestRawBitmap( wxCommandEvent &event );
109 #endif // wxHAVE_RAW_BITMAP
110 void OnQuit( wxCommandEvent &event );
111
112 #if wxUSE_CLIPBOARD
113 void OnCopy(wxCommandEvent& event);
114 void OnPaste(wxCommandEvent& event);
115 #endif // wxUSE_CLIPBOARD
116
117 MyCanvas *m_canvas;
118
119 private:
120 DECLARE_DYNAMIC_CLASS(MyFrame)
121 DECLARE_EVENT_TABLE()
122 };
123
124 class MyImageFrame : public wxFrame
125 {
126 public:
127 MyImageFrame(wxFrame *parent, const wxBitmap& bitmap)
128 : wxFrame(parent, wxID_ANY, _T("Double click to save"),
129 wxDefaultPosition, wxDefaultSize,
130 wxCAPTION | wxSYSTEM_MENU | wxCLOSE_BOX),
131 m_bitmap(bitmap)
132 {
133 SetClientSize(bitmap.GetWidth(), bitmap.GetHeight());
134 }
135
136 void OnEraseBackground(wxEraseEvent& WXUNUSED(event))
137 {
138 // do nothing here to be able to see how transparent images are shown
139 }
140
141 void OnPaint(wxPaintEvent& WXUNUSED(event))
142 {
143 wxPaintDC dc( this );
144 dc.DrawBitmap( m_bitmap, 0, 0, true /* use mask */ );
145 }
146
147 void OnSave(wxMouseEvent& WXUNUSED(event))
148 {
149 wxImage image = m_bitmap.ConvertToImage();
150
151 wxString savefilename = wxFileSelector( wxT("Save Image"),
152 wxT(""),
153 wxT(""),
154 (const wxChar *)NULL,
155 wxT("BMP files (*.bmp)|*.bmp|")
156 wxT("PNG files (*.png)|*.png|")
157 wxT("JPEG files (*.jpg)|*.jpg|")
158 wxT("GIF files (*.gif)|*.gif|")
159 wxT("TIFF files (*.tif)|*.tif|")
160 wxT("PCX files (*.pcx)|*.pcx|")
161 wxT("ICO files (*.ico)|*.ico|")
162 wxT("CUR files (*.cur)|*.cur"),
163 wxSAVE,
164 this);
165
166 if ( savefilename.empty() )
167 return;
168
169 wxString extension;
170 wxFileName::SplitPath(savefilename, NULL, NULL, &extension);
171
172 bool saved = false;
173 if ( extension == _T("bpp") )
174 {
175 static const int bppvalues[] =
176 {
177 wxBMP_1BPP,
178 wxBMP_1BPP_BW,
179 wxBMP_4BPP,
180 wxBMP_8BPP,
181 wxBMP_8BPP_GREY,
182 wxBMP_8BPP_RED,
183 wxBMP_8BPP_PALETTE,
184 wxBMP_24BPP
185 };
186
187 const wxString bppchoices[] =
188 {
189 _T("1 bpp color"),
190 _T("1 bpp B&W"),
191 _T("4 bpp color"),
192 _T("8 bpp color"),
193 _T("8 bpp greyscale"),
194 _T("8 bpp red"),
195 _T("8 bpp own palette"),
196 _T("24 bpp")
197 };
198
199 int bppselection = wxGetSingleChoiceIndex(_T("Set BMP BPP"),
200 _T("Image sample: save file"),
201 WXSIZEOF(bppchoices),
202 bppchoices,
203 this);
204 if ( bppselection != -1 )
205 {
206 int format = bppvalues[bppselection];
207 image.SetOption(wxIMAGE_OPTION_BMP_FORMAT, format);
208
209 if ( format == wxBMP_8BPP_PALETTE )
210 {
211 unsigned char *cmap = new unsigned char [256];
212 for ( int i = 0; i < 256; i++ )
213 cmap[i] = (unsigned char)i;
214 image.SetPalette(wxPalette(256, cmap, cmap, cmap));
215
216 delete cmap;
217 }
218 }
219 }
220 else if ( extension == _T("png") )
221 {
222 static const int pngvalues[] =
223 {
224 wxPNG_TYPE_COLOUR,
225 wxPNG_TYPE_COLOUR,
226 wxPNG_TYPE_GREY,
227 wxPNG_TYPE_GREY,
228 wxPNG_TYPE_GREY_RED,
229 wxPNG_TYPE_GREY_RED,
230 };
231
232 const wxString pngchoices[] =
233 {
234 _T("Colour 8bpp"),
235 _T("Colour 16bpp"),
236 _T("Grey 8bpp"),
237 _T("Grey 16bpp"),
238 _T("Grey red 8bpp"),
239 _T("Grey red 16bpp"),
240 };
241
242 int sel = wxGetSingleChoiceIndex(_T("Set PNG format"),
243 _T("Image sample: save file"),
244 WXSIZEOF(pngchoices),
245 pngchoices,
246 this);
247 if ( sel != -1 )
248 {
249 image.SetOption(wxIMAGE_OPTION_PNG_FORMAT, pngvalues[sel]);
250 image.SetOption(wxIMAGE_OPTION_PNG_BITDEPTH, sel % 2 ? 16 : 8);
251 }
252 }
253 else if ( extension == _T("cur") )
254 {
255 image.Rescale(32,32);
256 image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_X, 0);
257 image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y, 0);
258 // This shows how you can save an image with explicitly
259 // specified image format:
260 saved = image.SaveFile(savefilename, wxBITMAP_TYPE_CUR);
261 }
262
263 if ( !saved )
264 {
265 // This one guesses image format from filename extension
266 // (it may fail if the extension is not recognized):
267 image.SaveFile(savefilename);
268 }
269 }
270
271 private:
272 wxBitmap m_bitmap;
273
274 DECLARE_EVENT_TABLE()
275 };
276
277 #ifdef wxHAVE_RAW_BITMAP
278
279 #include "wx/rawbmp.h"
280
281 class MyRawBitmapFrame : public wxFrame
282 {
283 public:
284 enum
285 {
286 BORDER = 15,
287 SIZE = 150,
288 REAL_SIZE = SIZE - 2*BORDER
289 };
290
291 MyRawBitmapFrame(wxFrame *parent)
292 : wxFrame(parent, wxID_ANY, _T("Raw bitmaps (how exciting)")),
293 m_bitmap(SIZE, SIZE, 32)
294 {
295 SetClientSize(SIZE, SIZE);
296
297 // another possibility: wxNativePixelData (don't forget to remove code
298 // setting alpha in the loop below then)
299 typedef wxAlphaPixelData Data;
300
301 Data data(m_bitmap, wxPoint(BORDER, BORDER), wxSize(REAL_SIZE, REAL_SIZE));
302 if ( !data )
303 {
304 wxLogError(_T("Failed to gain raw access to bitmap data"));
305 return;
306 }
307
308 data.UseAlpha();
309
310 Data::Iterator p(data);
311
312 for ( int y = 0; y < REAL_SIZE; ++y )
313 {
314 Data::Iterator rowStart = p;
315
316 int r = y < REAL_SIZE/3 ? 255 : 0,
317 g = (REAL_SIZE/3 <= y) && (y < 2*(REAL_SIZE/3)) ? 255 : 0,
318 b = 2*(REAL_SIZE/3) <= y ? 255 : 0;
319
320 for ( int x = 0; x < REAL_SIZE; ++x )
321 {
322 p.Red() = r;
323 p.Green() = g;
324 p.Blue() = b;
325 p.Alpha() = (Data::Iterator::ChannelType)((x*255.)/REAL_SIZE);
326
327 ++p; // same as p.OffsetX(1)
328 }
329
330 p = rowStart;
331 p.OffsetY(data, 1);
332 }
333 }
334
335 void OnPaint(wxPaintEvent& WXUNUSED(event))
336 {
337 wxPaintDC dc( this );
338 dc.DrawText(_T("This is alpha and raw bitmap test"), 0, BORDER);
339 dc.DrawText(_T("This is alpha and raw bitmap test"), 0, SIZE/2 - BORDER);
340 dc.DrawText(_T("This is alpha and raw bitmap test"), 0, SIZE - 2*BORDER);
341 dc.DrawBitmap( m_bitmap, 0, 0, true /* use mask */ );
342 }
343
344 private:
345 wxBitmap m_bitmap;
346
347 DECLARE_EVENT_TABLE()
348 };
349
350 #endif // wxHAVE_RAW_BITMAP
351
352 // MyApp
353
354 class MyApp: public wxApp
355 {
356 public:
357 virtual bool OnInit();
358 };
359
360 // main program
361
362 IMPLEMENT_APP(MyApp)
363
364 // MyCanvas
365
366 IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxScrolledWindow)
367
368 BEGIN_EVENT_TABLE(MyImageFrame, wxFrame)
369 EVT_ERASE_BACKGROUND(MyImageFrame::OnEraseBackground)
370 EVT_PAINT(MyImageFrame::OnPaint)
371 EVT_LEFT_DCLICK(MyImageFrame::OnSave)
372 END_EVENT_TABLE()
373
374 #ifdef wxHAVE_RAW_BITMAP
375
376 BEGIN_EVENT_TABLE(MyRawBitmapFrame, wxFrame)
377 EVT_PAINT(MyRawBitmapFrame::OnPaint)
378 END_EVENT_TABLE()
379
380 #endif // wxHAVE_RAW_BITMAP
381
382 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
383 EVT_PAINT(MyCanvas::OnPaint)
384 END_EVENT_TABLE()
385
386 MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
387 const wxPoint &pos, const wxSize &size )
388 : wxScrolledWindow( parent, id, pos, size, wxSUNKEN_BORDER )
389 , m_bmpSmileXpm((const char **) smile_xpm)
390 , m_iconSmileXpm((const char **) smile_xpm)
391 {
392 my_horse_png = (wxBitmap*) NULL;
393 my_horse_jpeg = (wxBitmap*) NULL;
394 my_horse_gif = (wxBitmap*) NULL;
395 my_horse_bmp = (wxBitmap*) NULL;
396 my_horse_bmp2 = (wxBitmap*) NULL;
397 my_horse_pcx = (wxBitmap*) NULL;
398 my_horse_pnm = (wxBitmap*) NULL;
399 my_horse_tiff = (wxBitmap*) NULL;
400 my_horse_xpm = (wxBitmap*) NULL;
401 my_horse_ico32 = (wxBitmap*) NULL;
402 my_horse_ico16 = (wxBitmap*) NULL;
403 my_horse_ico = (wxBitmap*) NULL;
404 my_horse_cur = (wxBitmap*) NULL;
405 my_horse_ani = (wxBitmap*) NULL;
406
407 my_smile_xbm = (wxBitmap*) NULL;
408 my_square = (wxBitmap*) NULL;
409 my_anti = (wxBitmap*) NULL;
410
411 m_ani_images = 0 ;
412
413 SetBackgroundColour(* wxWHITE);
414
415 wxBitmap bitmap( 100, 100 );
416
417 wxMemoryDC dc;
418 dc.SelectObject( bitmap );
419 dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) );
420 dc.SetPen( *wxBLACK_PEN );
421 dc.DrawRectangle( 0, 0, 100, 100 );
422 dc.SetBrush( *wxWHITE_BRUSH );
423 dc.DrawRectangle( 20, 20, 60, 60 );
424 dc.SelectObject( wxNullBitmap );
425
426 // try to find the directory with our images
427 wxString dir;
428 if ( wxFile::Exists(wxT("./horse.png")) )
429 dir = wxT("./");
430 else if ( wxFile::Exists(wxT("../horse.png")) )
431 dir = wxT("../");
432 else
433 wxLogWarning(wxT("Can't find image files in either '.' or '..'!"));
434
435 wxImage image = bitmap.ConvertToImage();
436
437 #if wxUSE_LIBPNG
438 if ( !image.SaveFile( dir + _T("test.png"), wxBITMAP_TYPE_PNG ))
439 wxLogError(wxT("Can't save file"));
440
441 image.Destroy();
442
443 if ( image.LoadFile( dir + _T("test.png") ) )
444 my_square = new wxBitmap( image );
445
446 image.Destroy();
447
448 if ( !image.LoadFile( dir + _T("horse.png")) )
449 wxLogError(wxT("Can't load PNG image"));
450 else
451 my_horse_png = new wxBitmap( image );
452 #endif // wxUSE_LIBPNG
453
454 #if wxUSE_LIBJPEG
455 image.Destroy();
456
457 if ( !image.LoadFile( dir + _T("horse.jpg")) )
458 wxLogError(wxT("Can't load JPG image"));
459 else
460 my_horse_jpeg = new wxBitmap( image );
461 #endif // wxUSE_LIBJPEG
462
463 #if wxUSE_GIF
464 image.Destroy();
465
466 if ( !image.LoadFile( dir + _T("horse.gif" )) )
467 wxLogError(wxT("Can't load GIF image"));
468 else
469 my_horse_gif = new wxBitmap( image );
470 #endif
471
472 #if wxUSE_PCX
473 image.Destroy();
474
475 if ( !image.LoadFile( dir + _T("horse.pcx"), wxBITMAP_TYPE_PCX ) )
476 wxLogError(wxT("Can't load PCX image"));
477 else
478 my_horse_pcx = new wxBitmap( image );
479 #endif
480
481 image.Destroy();
482
483 if ( !image.LoadFile( dir + _T("horse.bmp"), wxBITMAP_TYPE_BMP ) )
484 wxLogError(wxT("Can't load BMP image"));
485 else
486 my_horse_bmp = new wxBitmap( image );
487
488 #if wxUSE_XPM
489 image.Destroy();
490
491 if ( !image.LoadFile( dir + _T("horse.xpm"), wxBITMAP_TYPE_XPM ) )
492 wxLogError(wxT("Can't load XPM image"));
493 else
494 my_horse_xpm = new wxBitmap( image );
495
496 if ( !image.SaveFile( dir + _T("test.xpm"), wxBITMAP_TYPE_XPM ))
497 wxLogError(wxT("Can't save file"));
498 #endif
499
500 #if wxUSE_PNM
501 image.Destroy();
502
503 if ( !image.LoadFile( dir + _T("horse.pnm"), wxBITMAP_TYPE_PNM ) )
504 wxLogError(wxT("Can't load PNM image"));
505 else
506 my_horse_pnm = new wxBitmap( image );
507 #endif
508
509 #if wxUSE_LIBTIFF
510 image.Destroy();
511
512 if ( !image.LoadFile( dir + _T("horse.tif"), wxBITMAP_TYPE_TIF ) )
513 wxLogError(wxT("Can't load TIFF image"));
514 else
515 my_horse_tiff = new wxBitmap( image );
516 #endif
517
518 CreateAntiAliasedBitmap();
519
520 my_smile_xbm = new wxBitmap( (const char*)smile_bits, smile_width,
521 smile_height, 1 );
522
523 // demonstrates XPM automatically using the mask when saving
524 if ( m_bmpSmileXpm.Ok() )
525 m_bmpSmileXpm.SaveFile(_T("saved.xpm"), wxBITMAP_TYPE_XPM);
526
527 #if wxUSE_ICO_CUR
528 image.Destroy();
529
530 if ( !image.LoadFile( dir + _T("horse.ico"), wxBITMAP_TYPE_ICO, 0 ) )
531 wxLogError(wxT("Can't load first ICO image"));
532 else
533 my_horse_ico32 = new wxBitmap( image );
534
535 image.Destroy();
536
537 if ( !image.LoadFile( dir + _T("horse.ico"), wxBITMAP_TYPE_ICO, 1 ) )
538 wxLogError(wxT("Can't load second ICO image"));
539 else
540 my_horse_ico16 = new wxBitmap( image );
541
542 image.Destroy();
543
544 if ( !image.LoadFile( dir + _T("horse.ico") ) )
545 wxLogError(wxT("Can't load best ICO image"));
546 else
547 my_horse_ico = new wxBitmap( image );
548
549 image.Destroy();
550
551 if ( !image.LoadFile( dir + _T("horse.cur"), wxBITMAP_TYPE_CUR ) )
552 wxLogError(wxT("Can't load best ICO image"));
553 else
554 {
555 my_horse_cur = new wxBitmap( image );
556 xH = 30 + image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X) ;
557 yH = 2420 + image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y) ;
558 }
559
560 m_ani_images = wxImage::GetImageCount ( dir + _T("horse3.ani"), wxBITMAP_TYPE_ANI );
561 if (m_ani_images==0)
562 wxLogError(wxT("No ANI-format images found"));
563 else
564 my_horse_ani = new wxBitmap [m_ani_images];
565 int i ;
566 for (i=0; i < m_ani_images; i++)
567 {
568 image.Destroy();
569 if (!image.LoadFile( dir + _T("horse3.ani"), wxBITMAP_TYPE_ANI, i ))
570 {
571 wxString tmp = wxT("Can't load image number ");
572 tmp << i ;
573 wxLogError(tmp);
574 }
575 else
576 my_horse_ani [i] = wxBitmap( image );
577 }
578 #endif // wxUSE_ICO_CUR
579
580 image.Destroy();
581
582 // test image loading from stream
583 wxFile file(dir + _T("horse.bmp"));
584 if ( file.IsOpened() )
585 {
586 wxFileOffset len = file.Length();
587 size_t dataSize = (size_t)len;
588 void *data = malloc(dataSize);
589 if ( file.Read(data, dataSize) != len )
590 wxLogError(_T("Reading bitmap file failed"));
591 else
592 {
593 wxMemoryInputStream mis(data, dataSize);
594 if ( !image.LoadFile(mis) )
595 wxLogError(wxT("Can't load BMP image from stream"));
596 else
597 my_horse_bmp2 = new wxBitmap( image );
598 }
599
600 free(data);
601 }
602 }
603
604 MyCanvas::~MyCanvas()
605 {
606 delete my_horse_pnm;
607 delete my_horse_png;
608 delete my_horse_jpeg;
609 delete my_horse_gif;
610 delete my_horse_bmp;
611 delete my_horse_bmp2;
612 delete my_horse_pcx;
613 delete my_horse_tiff;
614 delete my_horse_xpm;
615 delete my_horse_ico32;
616 delete my_horse_ico16;
617 delete my_horse_ico;
618 delete my_horse_cur;
619 delete [] my_horse_ani;
620 delete my_smile_xbm;
621 delete my_square;
622 delete my_anti;
623 }
624
625 void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
626 {
627 wxPaintDC dc( this );
628 PrepareDC( dc );
629
630 dc.DrawText( _T("Loaded image"), 30, 10 );
631 if (my_square && my_square->Ok()) dc.DrawBitmap( *my_square, 30, 30 );
632
633 dc.DrawText( _T("Drawn directly"), 150, 10 );
634 dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) );
635 dc.SetPen( *wxBLACK_PEN );
636 dc.DrawRectangle( 150, 30, 100, 100 );
637 dc.SetBrush( *wxWHITE_BRUSH );
638 dc.DrawRectangle( 170, 50, 60, 60 );
639
640 if (my_anti && my_anti->Ok())
641 dc.DrawBitmap( *my_anti, 280, 30 );
642
643 dc.DrawText( _T("PNG handler"), 30, 135 );
644 if (my_horse_png && my_horse_png->Ok())
645 {
646 dc.DrawBitmap( *my_horse_png, 30, 150 );
647 wxRect rect(0,0,100,100);
648 wxBitmap sub( my_horse_png->GetSubBitmap(rect) );
649 dc.DrawText( _T("GetSubBitmap()"), 280, 190 );
650 dc.DrawBitmap( sub, 280, 210 );
651 }
652
653 dc.DrawText( _T("JPEG handler"), 30, 365 );
654 if (my_horse_jpeg && my_horse_jpeg->Ok())
655 dc.DrawBitmap( *my_horse_jpeg, 30, 380 );
656
657 dc.DrawText( _T("GIF handler"), 30, 595 );
658 if (my_horse_gif && my_horse_gif->Ok())
659 dc.DrawBitmap( *my_horse_gif, 30, 610 );
660
661 dc.DrawText( _T("PCX handler"), 30, 825 );
662 if (my_horse_pcx && my_horse_pcx->Ok())
663 dc.DrawBitmap( *my_horse_pcx, 30, 840 );
664
665 dc.DrawText( _T("BMP handler"), 30, 1055 );
666 if (my_horse_bmp && my_horse_bmp->Ok())
667 dc.DrawBitmap( *my_horse_bmp, 30, 1070 );
668
669 dc.DrawText( _T("BMP read from memory"), 280, 1055 );
670 if (my_horse_bmp2 && my_horse_bmp2->Ok())
671 dc.DrawBitmap( *my_horse_bmp2, 280, 1070 );
672
673 dc.DrawText( _T("PNM handler"), 30, 1285 );
674 if (my_horse_pnm && my_horse_pnm->Ok())
675 dc.DrawBitmap( *my_horse_pnm, 30, 1300 );
676
677 dc.DrawText( _T("TIFF handler"), 30, 1515 );
678 if (my_horse_tiff && my_horse_tiff->Ok())
679 dc.DrawBitmap( *my_horse_tiff, 30, 1530 );
680
681 dc.DrawText( _T("XPM handler"), 30, 1745 );
682 if (my_horse_xpm && my_horse_xpm->Ok())
683 dc.DrawBitmap( *my_horse_xpm, 30, 1760 );
684
685
686 if (my_smile_xbm && my_smile_xbm->Ok())
687 {
688 dc.DrawText( _T("XBM bitmap"), 30, 1975 );
689 dc.DrawText( _T("(green on red)"), 30, 1990 );
690 dc.SetTextForeground( _T("GREEN") );
691 dc.SetTextBackground( _T("RED") );
692 dc.DrawBitmap( *my_smile_xbm, 30, 2010 );
693
694 dc.SetTextForeground( wxT("BLACK") );
695 dc.DrawText( _T("After wxImage conversion"), 150, 1975 );
696 dc.DrawText( _T("(red on white)"), 150, 1990 );
697 dc.SetTextForeground( wxT("RED") );
698 wxImage i = my_smile_xbm->ConvertToImage();
699 i.SetMaskColour( 255, 255, 255 );
700 i.Replace( 0, 0, 0,
701 wxRED_PEN->GetColour().Red(),
702 wxRED_PEN->GetColour().Green(),
703 wxRED_PEN->GetColour().Blue() );
704 dc.DrawBitmap( wxBitmap(i), 150, 2010, true );
705 dc.SetTextForeground( wxT("BLACK") );
706 }
707
708
709 wxBitmap mono( 60,50,1 );
710 wxMemoryDC memdc;
711 memdc.SelectObject( mono );
712 memdc.SetPen( *wxBLACK_PEN );
713 memdc.SetBrush( *wxWHITE_BRUSH );
714 memdc.DrawRectangle( 0,0,60,50 );
715 memdc.SetTextForeground( *wxBLACK );
716 #ifndef __WXGTK20__
717 // I cannot convince GTK2 to draw into mono bitmaps
718 memdc.DrawText( _T("Hi!"), 5, 5 );
719 #endif
720 memdc.SetBrush( *wxBLACK_BRUSH );
721 memdc.DrawRectangle( 33,5,20,20 );
722 memdc.SetPen( *wxRED_PEN );
723 memdc.DrawLine( 5, 42, 50, 42 );
724 memdc.SelectObject( wxNullBitmap );
725
726 if (mono.Ok())
727 {
728 dc.DrawText( _T("Mono bitmap"), 30, 2095 );
729 dc.DrawText( _T("(red on green)"), 30, 2110 );
730 dc.SetTextForeground( wxT("RED") );
731 dc.SetTextBackground( wxT("GREEN") );
732 dc.DrawBitmap( mono, 30, 2130 );
733
734 dc.SetTextForeground( wxT("BLACK") );
735 dc.DrawText( _T("After wxImage conversion"), 150, 2095 );
736 dc.DrawText( _T("(red on white)"), 150, 2110 );
737 dc.SetTextForeground( wxT("RED") );
738 wxImage i = mono.ConvertToImage();
739 i.SetMaskColour( 255,255,255 );
740 i.Replace( 0,0,0,
741 wxRED_PEN->GetColour().Red(),
742 wxRED_PEN->GetColour().Green(),
743 wxRED_PEN->GetColour().Blue() );
744 dc.DrawBitmap( wxBitmap(i), 150, 2130, true );
745 dc.SetTextForeground( wxT("BLACK") );
746 }
747
748 // For testing transparency
749 dc.SetBrush( *wxRED_BRUSH );
750 dc.DrawRectangle( 20, 2220, 560, 68 );
751
752 dc.DrawText(_T("XPM bitmap"), 30, 2230 );
753 if ( m_bmpSmileXpm.Ok() )
754 dc.DrawBitmap(m_bmpSmileXpm, 30, 2250, true);
755
756 dc.DrawText(_T("XPM icon"), 110, 2230 );
757 if ( m_iconSmileXpm.Ok() )
758 dc.DrawIcon(m_iconSmileXpm, 110, 2250);
759
760 // testing icon -> bitmap conversion
761 wxBitmap to_blit( m_iconSmileXpm );
762 if (to_blit.Ok())
763 {
764 dc.DrawText( _T("SubBitmap"), 170, 2230 );
765 wxBitmap sub = to_blit.GetSubBitmap( wxRect(0,0,15,15) );
766 if (sub.Ok())
767 dc.DrawBitmap( sub, 170, 2250, true );
768
769 dc.DrawText( _T("Enlarged"), 250, 2230 );
770 dc.SetUserScale( 1.5, 1.5 );
771 dc.DrawBitmap( to_blit, (int)(250/1.5), (int)(2250/1.5), true );
772 dc.SetUserScale( 2, 2 );
773 dc.DrawBitmap( to_blit, (int)(300/2), (int)(2250/2), true );
774 dc.SetUserScale( 1.0, 1.0 );
775
776 dc.DrawText( _T("Blit"), 400, 2230);
777 wxMemoryDC blit_dc;
778 blit_dc.SelectObject( to_blit );
779 dc.Blit( 400, 2250, to_blit.GetWidth(), to_blit.GetHeight(), &blit_dc, 0, 0, wxCOPY, true );
780 dc.SetUserScale( 1.5, 1.5 );
781 dc.Blit( (int)(450/1.5), (int)(2250/1.5), to_blit.GetWidth(), to_blit.GetHeight(), &blit_dc, 0, 0, wxCOPY, true );
782 dc.SetUserScale( 2, 2 );
783 dc.Blit( (int)(500/2), (int)(2250/2), to_blit.GetWidth(), to_blit.GetHeight(), &blit_dc, 0, 0, wxCOPY, true );
784 dc.SetUserScale( 1.0, 1.0 );
785 }
786
787 dc.DrawText( _T("ICO handler (1st image)"), 30, 2290 );
788 if (my_horse_ico32 && my_horse_ico32->Ok())
789 dc.DrawBitmap( *my_horse_ico32, 30, 2330, true );
790
791 dc.DrawText( _T("ICO handler (2nd image)"), 230, 2290 );
792 if (my_horse_ico16 && my_horse_ico16->Ok())
793 dc.DrawBitmap( *my_horse_ico16, 230, 2330, true );
794
795 dc.DrawText( _T("ICO handler (best image)"), 430, 2290 );
796 if (my_horse_ico && my_horse_ico->Ok())
797 dc.DrawBitmap( *my_horse_ico, 430, 2330, true );
798
799 dc.DrawText( _T("CUR handler"), 30, 2390 );
800 if (my_horse_cur && my_horse_cur->Ok())
801 {
802 dc.DrawBitmap( *my_horse_cur, 30, 2420, true );
803 dc.SetPen (*wxRED_PEN);
804 dc.DrawLine (xH-10,yH,xH+10,yH);
805 dc.DrawLine (xH,yH-10,xH,yH+10);
806 }
807 dc.DrawText( _T("ANI handler"), 230, 2390 );
808 int i ;
809 for (i=0; i < m_ani_images; i ++)
810 if (my_horse_ani[i].Ok())
811 {
812 dc.DrawBitmap( my_horse_ani[i], 230 + i * 2 * my_horse_ani[i].GetWidth() , 2420, true );
813 }
814 }
815
816 void MyCanvas::CreateAntiAliasedBitmap()
817 {
818 wxBitmap bitmap( 300, 300 );
819
820 wxMemoryDC dc;
821
822 dc.SelectObject( bitmap );
823
824 dc.Clear();
825
826 dc.SetFont( wxFont( 24, wxDECORATIVE, wxNORMAL, wxNORMAL) );
827 dc.SetTextForeground( wxT("RED") );
828 dc.DrawText( _T("This is anti-aliased Text."), 20, 20 );
829 dc.DrawText( _T("And a Rectangle."), 20, 60 );
830
831 dc.SetBrush( *wxRED_BRUSH );
832 dc.SetPen( *wxTRANSPARENT_PEN );
833 dc.DrawRoundedRectangle( 20, 100, 200, 180, 20 );
834
835 wxImage original= bitmap.ConvertToImage();
836 wxImage anti( 150, 150 );
837
838 /* This is quite slow, but safe. Use wxImage::GetData() for speed instead. */
839
840 for (int y = 1; y < 149; y++)
841 for (int x = 1; x < 149; x++)
842 {
843 int red = original.GetRed( x*2, y*2 ) +
844 original.GetRed( x*2-1, y*2 ) +
845 original.GetRed( x*2, y*2+1 ) +
846 original.GetRed( x*2+1, y*2+1 );
847 red = red/4;
848
849 int green = original.GetGreen( x*2, y*2 ) +
850 original.GetGreen( x*2-1, y*2 ) +
851 original.GetGreen( x*2, y*2+1 ) +
852 original.GetGreen( x*2+1, y*2+1 );
853 green = green/4;
854
855 int blue = original.GetBlue( x*2, y*2 ) +
856 original.GetBlue( x*2-1, y*2 ) +
857 original.GetBlue( x*2, y*2+1 ) +
858 original.GetBlue( x*2+1, y*2+1 );
859 blue = blue/4;
860 anti.SetRGB( x, y, (unsigned char)red, (unsigned char)green, (unsigned char)blue );
861 }
862 my_anti = new wxBitmap(anti);
863 }
864
865 // MyFrame
866
867 enum
868 {
869 ID_QUIT = 108,
870 ID_ABOUT,
871 ID_NEW,
872 ID_SHOWRAW
873 };
874
875 IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )
876
877 BEGIN_EVENT_TABLE(MyFrame,wxFrame)
878 EVT_MENU (ID_ABOUT, MyFrame::OnAbout)
879 EVT_MENU (ID_QUIT, MyFrame::OnQuit)
880 EVT_MENU (ID_NEW, MyFrame::OnNewFrame)
881 #ifdef wxHAVE_RAW_BITMAP
882 EVT_MENU (ID_SHOWRAW, MyFrame::OnTestRawBitmap)
883 #endif
884
885 #if wxUSE_CLIPBOARD
886 EVT_MENU(wxID_COPY, MyFrame::OnCopy)
887 EVT_MENU(wxID_PASTE, MyFrame::OnPaste)
888 #endif // wxUSE_CLIPBOARD
889 END_EVENT_TABLE()
890
891 MyFrame::MyFrame()
892 : wxFrame( (wxFrame *)NULL, wxID_ANY, _T("wxImage sample"),
893 wxPoint(20,20), wxSize(470,360) )
894 {
895 wxMenuBar *menu_bar = new wxMenuBar();
896
897 wxMenu *menuImage = new wxMenu;
898 menuImage->Append( ID_NEW, _T("&Show any image...\tCtrl-O"));
899
900 #ifdef wxHAVE_RAW_BITMAP
901 menuImage->Append( ID_SHOWRAW, _T("Test &raw bitmap...\tCtrl-R"));
902 #endif
903 menuImage->AppendSeparator();
904 menuImage->Append( ID_ABOUT, _T("&About..."));
905 menuImage->AppendSeparator();
906 menuImage->Append( ID_QUIT, _T("E&xit\tCtrl-Q"));
907 menu_bar->Append(menuImage, _T("&Image"));
908
909 #if wxUSE_CLIPBOARD
910 wxMenu *menuClipboard = new wxMenu;
911 menuClipboard->Append(wxID_COPY, _T("&Copy test image\tCtrl-C"));
912 menuClipboard->Append(wxID_PASTE, _T("&Paste image\tCtrl-V"));
913 menu_bar->Append(menuClipboard, _T("&Clipboard"));
914 #endif // wxUSE_CLIPBOARD
915
916 SetMenuBar( menu_bar );
917
918 #if wxUSE_STATUSBAR
919 CreateStatusBar(2);
920 int widths[] = { -1, 100 };
921 SetStatusWidths( 2, widths );
922 #endif // wxUSE_STATUSBAR
923
924 m_canvas = new MyCanvas( this, wxID_ANY, wxPoint(0,0), wxSize(10,10) );
925
926 // 500 width * 2500 height
927 m_canvas->SetScrollbars( 10, 10, 50, 250 );
928 }
929
930 void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
931 {
932 Close( true );
933 }
934
935 void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) )
936 {
937 (void)wxMessageBox( _T("wxImage demo\n")
938 _T("Robert Roebling (c) 1998,2000"),
939 _T("About wxImage Demo"), wxICON_INFORMATION | wxOK );
940 }
941
942 void MyFrame::OnNewFrame( wxCommandEvent &WXUNUSED(event) )
943 {
944 wxString filename = wxFileSelector(_T("Select image file"));
945 if ( !filename )
946 return;
947
948 wxImage image;
949 if ( !image.LoadFile(filename) )
950 {
951 wxLogError(_T("Couldn't load image from '%s'."), filename.c_str());
952
953 return;
954 }
955
956 (new MyImageFrame(this, wxBitmap(image)))->Show();
957 }
958
959 #ifdef wxHAVE_RAW_BITMAP
960
961 void MyFrame::OnTestRawBitmap( wxCommandEvent &WXUNUSED(event) )
962 {
963 (new MyRawBitmapFrame(this))->Show();
964 }
965
966 #endif // wxHAVE_RAW_BITMAP
967
968 #if wxUSE_CLIPBOARD
969
970 void MyFrame::OnCopy(wxCommandEvent& WXUNUSED(event))
971 {
972 wxBitmapDataObject *dobjBmp = new wxBitmapDataObject;
973 dobjBmp->SetBitmap(*m_canvas->my_horse_png);
974
975 wxTheClipboard->Open();
976
977 if ( !wxTheClipboard->SetData(dobjBmp) )
978 {
979 wxLogError(_T("Failed to copy bitmap to clipboard"));
980 }
981
982 wxTheClipboard->Close();
983 }
984
985 void MyFrame::OnPaste(wxCommandEvent& WXUNUSED(event))
986 {
987 wxBitmapDataObject dobjBmp;
988
989 wxTheClipboard->Open();
990 if ( !wxTheClipboard->GetData(dobjBmp) )
991 {
992 wxLogMessage(_T("No bitmap data in the clipboard"));
993 }
994 else
995 {
996 (new MyImageFrame(this, dobjBmp.GetBitmap()))->Show();
997 }
998 wxTheClipboard->Close();
999 }
1000
1001 #endif // wxUSE_CLIPBOARD
1002
1003 //-----------------------------------------------------------------------------
1004 // MyApp
1005 //-----------------------------------------------------------------------------
1006
1007 bool MyApp::OnInit()
1008 {
1009 #if wxUSE_LIBPNG
1010 wxImage::AddHandler( new wxPNGHandler );
1011 #endif
1012
1013 #if wxUSE_LIBJPEG
1014 wxImage::AddHandler( new wxJPEGHandler );
1015 #endif
1016
1017 #if wxUSE_LIBTIFF
1018 wxImage::AddHandler( new wxTIFFHandler );
1019 #endif
1020
1021 #if wxUSE_GIF
1022 wxImage::AddHandler( new wxGIFHandler );
1023 #endif
1024
1025 #if wxUSE_PCX
1026 wxImage::AddHandler( new wxPCXHandler );
1027 #endif
1028
1029 #if wxUSE_PNM
1030 wxImage::AddHandler( new wxPNMHandler );
1031 #endif
1032
1033 #if wxUSE_XPM
1034 wxImage::AddHandler( new wxXPMHandler );
1035 #endif
1036
1037 #if wxUSE_ICO_CUR
1038 wxImage::AddHandler( new wxICOHandler );
1039 wxImage::AddHandler( new wxCURHandler );
1040 wxImage::AddHandler( new wxANIHandler );
1041 #endif
1042
1043 wxFrame *frame = new MyFrame();
1044 frame->Show( true );
1045
1046 return true;
1047 }
1048
wxWidgets (Impactor)