samples/image/image.cpp

   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 #include "smile.xbm"
  28
  29 #if !defined(__WINDOWS__) || wxUSE_XPM_IN_MSW
  30     #include "smile.xpm"
  31 #endif
  32
  33
  34 // derived classes
  35
  36 class MyFrame;
  37 class MyApp;
  38
  39 // MyCanvas
  40
  41 class MyCanvas: public wxScrolledWindow
  42 {
  43 public:
  44     MyCanvas() {}
  45     MyCanvas( wxWindow *parent, wxWindowID, const wxPoint &pos, const wxSize &size );
  46     ~MyCanvas();
  47     void OnPaint( wxPaintEvent &event );
  48     void CreateAntiAliasedBitmap();
  49
  50     wxBitmap  *my_horse_png;
  51     wxBitmap  *my_horse_jpeg;
  52     wxBitmap  *my_horse_gif;
  53     wxBitmap  *my_horse_bmp;
  54     wxBitmap  *my_horse_bmp2;
  55     wxBitmap  *my_horse_pcx;
  56     wxBitmap  *my_horse_pnm;
  57     wxBitmap  *my_horse_tiff;
  58     wxBitmap  *my_horse_xpm;
  59     wxBitmap  *my_horse_ico32;
  60     wxBitmap  *my_horse_ico16;
  61     wxBitmap  *my_horse_ico;
  62     wxBitmap  *my_horse_cur;
  63     wxBitmap  *my_horse_ani;
  64
  65     wxBitmap  *my_smile_xbm;
  66     wxBitmap  *my_square;
  67     wxBitmap  *my_anti;
  68
  69     int xH, yH ;
  70     int m_ani_images ;
  71
  72 protected:
  73     wxBitmap m_bmpSmileXpm;
  74     wxIcon   m_iconSmileXpm;
  75
  76 private:
  77     DECLARE_DYNAMIC_CLASS(MyCanvas)
  78     DECLARE_EVENT_TABLE()
  79 };
  80
  81
  82 const int nChoices = 8 ;
  83 static const wxString bppchoices[nChoices] =
  84 {
  85     _T("1 bpp color"),
  86     _T("1 bpp B&W"),
  87     _T("4 bpp color"),
  88     _T("8 bpp color"),
  89     _T("8 bpp greyscale"),
  90     _T("8 bpp red"),
  91     _T("8 bpp own palette"),
  92     _T("24 bpp")
  93 };
  94
  95 static const int bppvalues[nChoices] =
  96 {
  97     wxBMP_1BPP,
  98     wxBMP_1BPP_BW,
  99     wxBMP_4BPP,
 100     wxBMP_8BPP,
 101     wxBMP_8BPP_GREY,
 102     wxBMP_8BPP_RED,
 103     wxBMP_8BPP_PALETTE,
 104     wxBMP_24BPP
 105 };
 106
 107 // MyFrame
 108
 109
 110 class MyFrame: public wxFrame
 111 {
 112 public:
 113     MyFrame();
 114
 115     void OnAbout( wxCommandEvent &event );
 116     void OnNewFrame( wxCommandEvent &event );
 117     void OnQuit( wxCommandEvent &event );
 118
 119     MyCanvas         *m_canvas;
 120
 121 private:
 122     DECLARE_DYNAMIC_CLASS(MyFrame)
 123     DECLARE_EVENT_TABLE()
 124 };
 125
 126 class MyImageFrame : public wxFrame
 127 {
 128 public:
 129     MyImageFrame(wxFrame *parent, const wxBitmap& bitmap)
 130         : wxFrame(parent, -1, _T("Double click to save"),
 131                   wxDefaultPosition, wxDefaultSize,
 132                   wxCAPTION | wxSYSTEM_MENU),
 133                   m_bitmap(bitmap)
 134     {
 135         SetClientSize(bitmap.GetWidth(), bitmap.GetHeight());
 136     }
 137
 138     void OnEraseBackground(wxEraseEvent& WXUNUSED(event))
 139     {
 140         // do nothing here to be able to see how transparent images are shown
 141     }
 142
 143     void OnPaint(wxPaintEvent& WXUNUSED(event))
 144     {
 145         wxPaintDC dc( this );
 146         dc.DrawBitmap( m_bitmap, 0, 0, TRUE /* use mask */ );
 147     }
 148
 149     void OnSave(wxMouseEvent& WXUNUSED(event))
 150     {
 151         wxImage image = m_bitmap.ConvertToImage();
 152
 153         int bppselection = wxGetSingleChoiceIndex(_T("Set BMP BPP"),
 154                                                   _T("Set BMP BPP"),
 155                                                   nChoices,
 156                                                   bppchoices,
 157                                                   this);
 158         if ( bppselection == -1 )
 159         {
 160             // cancelled
 161             return;
 162         }
 163
 164         image.SetOption(wxIMAGE_OPTION_BMP_FORMAT, bppvalues[bppselection]);
 165
 166         wxString deffilename = bppchoices[bppselection];
 167         deffilename.Replace(wxT(" "), wxT("_"));
 168         deffilename += wxT(".bmp");
 169         wxString savefilename = wxFileSelector( wxT("Save Image"),
 170                                                 wxT(""),
 171                                                 deffilename,
 172                                                 (const wxChar *)NULL,
 173                                             wxT("BMP files (*.bmp)|*.bmp|")
 174                                             wxT("PNG files (*.png)|*.png|")
 175                                             wxT("JPEG files (*.jpg)|*.jpg|")
 176                                             wxT("GIF files (*.gif)|*.gif|")
 177                                             wxT("TIFF files (*.tif)|*.tif|")
 178                                             wxT("PCX files (*.pcx)|*.pcx|")
 179                                             wxT("ICO files (*.ico)|*.ico|")
 180                                             wxT("CUR files (*.cur)|*.cur"),
 181                                                 wxSAVE);
 182
 183         if ( savefilename.empty() )
 184             return;
 185
 186         if ( image.GetOptionInt(wxIMAGE_OPTION_BMP_FORMAT) == wxBMP_8BPP_PALETTE )
 187         {
 188             unsigned char *cmap = new unsigned char [256];
 189             for ( int i = 0; i < 256; i++ )
 190                 cmap[i] = i;
 191             image.SetPalette(wxPalette(256, cmap, cmap, cmap));
 192
 193             delete cmap;
 194         }
 195
 196         bool loaded;
 197         wxString extension = savefilename.AfterLast('.').Lower();
 198
 199         if (extension == _T("cur"))
 200         {
 201             image.Rescale(32,32);
 202             image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_X, 0);
 203             image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y, 0);
 204             // This shows how you can save an image with explicitly
 205             // specified image format:
 206             loaded = image.SaveFile(savefilename, wxBITMAP_TYPE_CUR);
 207         }
 208         else
 209         {
 210             // This one guesses image format from filename extension
 211             // (it may fail if the extension is not recognized):
 212             loaded = image.SaveFile(savefilename);
 213         }
 214
 215         if ( !loaded )
 216             wxMessageBox(_T("No handler for this file type."),
 217                          _T("File was not saved"),
 218                          wxOK|wxCENTRE, this);
 219     }
 220
 221 private:
 222     wxBitmap m_bitmap;
 223
 224     DECLARE_EVENT_TABLE()
 225 };
 226
 227 // MyApp
 228
 229 class MyApp: public wxApp
 230 {
 231 public:
 232     virtual bool OnInit();
 233 };
 234
 235 // main program
 236
 237 IMPLEMENT_APP(MyApp)
 238
 239 // MyCanvas
 240
 241 IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxScrolledWindow)
 242
 243 BEGIN_EVENT_TABLE(MyImageFrame, wxFrame)
 244     EVT_ERASE_BACKGROUND(MyImageFrame::OnEraseBackground)
 245     EVT_PAINT(MyImageFrame::OnPaint)
 246     EVT_LEFT_DCLICK(MyImageFrame::OnSave)
 247 END_EVENT_TABLE()
 248
 249 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
 250   EVT_PAINT(MyCanvas::OnPaint)
 251 END_EVENT_TABLE()
 252
 253 MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
 254                     const wxPoint &pos, const wxSize &size )
 255         : wxScrolledWindow( parent, id, pos, size, wxSUNKEN_BORDER )
 256 #if !defined(__WINDOWS__) || wxUSE_XPM_IN_MSW
 257           , m_bmpSmileXpm((const char **) smile_xpm)
 258           , m_iconSmileXpm((const char **) smile_xpm)
 259 #endif
 260 {
 261     my_horse_png = (wxBitmap*) NULL;
 262     my_horse_jpeg = (wxBitmap*) NULL;
 263     my_horse_gif = (wxBitmap*) NULL;
 264     my_horse_bmp = (wxBitmap*) NULL;
 265     my_horse_bmp2 = (wxBitmap*) NULL;
 266     my_horse_pcx = (wxBitmap*) NULL;
 267     my_horse_pnm = (wxBitmap*) NULL;
 268     my_horse_tiff = (wxBitmap*) NULL;
 269     my_horse_xpm = (wxBitmap*) NULL;
 270     my_horse_ico32 = (wxBitmap*) NULL;
 271     my_horse_ico16 = (wxBitmap*) NULL;
 272     my_horse_ico = (wxBitmap*) NULL;
 273     my_horse_cur = (wxBitmap*) NULL;
 274     my_horse_ani = (wxBitmap*) NULL;
 275
 276     my_smile_xbm = (wxBitmap*) NULL;
 277     my_square = (wxBitmap*) NULL;
 278     my_anti = (wxBitmap*) NULL;
 279
 280     m_ani_images = 0 ;
 281
 282     SetBackgroundColour(* wxWHITE);
 283
 284     wxBitmap bitmap( 100, 100 );
 285
 286     wxMemoryDC dc;
 287     dc.SelectObject( bitmap );
 288     dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) );
 289     dc.SetPen( *wxBLACK_PEN );
 290     dc.DrawRectangle( 0, 0, 100, 100 );
 291     dc.SetBrush( *wxWHITE_BRUSH );
 292     dc.DrawRectangle( 20, 20, 60, 60 );
 293     dc.SelectObject( wxNullBitmap );
 294
 295     // try to find the directory with our images
 296     wxString dir;
 297     if ( wxFile::Exists(wxT("./horse.png")) )
 298         dir = wxT("./");
 299     else if ( wxFile::Exists(wxT("../horse.png")) )
 300         dir = wxT("../");
 301     else
 302         wxLogWarning(wxT("Can't find image files in either '.' or '..'!"));
 303
 304     wxImage image = bitmap.ConvertToImage();
 305
 306 #if wxUSE_LIBPNG
 307     if ( !image.SaveFile( dir + _T("test.png"), wxBITMAP_TYPE_PNG ))
 308         wxLogError(wxT("Can't save file"));
 309
 310     image.Destroy();
 311
 312     image.LoadFile( dir + _T("test.png") );
 313     my_square = new wxBitmap( image );
 314
 315     image.Destroy();
 316
 317     if ( !image.LoadFile( dir + _T("horse.png")) )
 318         wxLogError(wxT("Can't load PNG image"));
 319     else
 320         my_horse_png = new wxBitmap( image );
 321 #endif // wxUSE_LIBPNG
 322
 323 #if wxUSE_LIBJPEG
 324     image.Destroy();
 325
 326     if ( !image.LoadFile( dir + _T("horse.jpg")) )
 327         wxLogError(wxT("Can't load JPG image"));
 328     else
 329         my_horse_jpeg = new wxBitmap( image );
 330 #endif // wxUSE_LIBJPEG
 331
 332 #if wxUSE_GIF
 333     image.Destroy();
 334
 335     if ( !image.LoadFile( dir + _T("horse.gif" )) )
 336         wxLogError(wxT("Can't load GIF image"));
 337     else
 338         my_horse_gif = new wxBitmap( image );
 339 #endif
 340
 341 #if wxUSE_PCX
 342     image.Destroy();
 343
 344     if ( !image.LoadFile( dir + _T("horse.pcx"), wxBITMAP_TYPE_PCX ) )
 345         wxLogError(wxT("Can't load PCX image"));
 346     else
 347         my_horse_pcx = new wxBitmap( image );
 348 #endif
 349
 350     image.Destroy();
 351
 352     if ( !image.LoadFile( dir + _T("horse.bmp"), wxBITMAP_TYPE_BMP ) )
 353         wxLogError(wxT("Can't load BMP image"));
 354     else
 355         my_horse_bmp = new wxBitmap( image );
 356
 357 #if wxUSE_XPM
 358     image.Destroy();
 359
 360     if ( !image.LoadFile( dir + _T("horse.xpm"), wxBITMAP_TYPE_XPM ) )
 361         wxLogError(wxT("Can't load XPM image"));
 362     else
 363         my_horse_xpm = new wxBitmap( image );
 364
 365     if ( !image.SaveFile( dir + _T("test.xpm"), wxBITMAP_TYPE_XPM ))
 366         wxLogError(wxT("Can't save file"));
 367 #endif
 368
 369 #if wxUSE_PNM
 370     image.Destroy();
 371
 372     if ( !image.LoadFile( dir + _T("horse.pnm"), wxBITMAP_TYPE_PNM ) )
 373         wxLogError(wxT("Can't load PNM image"));
 374     else
 375         my_horse_pnm = new wxBitmap( image );
 376 #endif
 377
 378 #if wxUSE_LIBTIFF
 379     image.Destroy();
 380
 381     if ( !image.LoadFile( dir + _T("horse.tif"), wxBITMAP_TYPE_TIF ) )
 382         wxLogError(wxT("Can't load TIFF image"));
 383     else
 384         my_horse_tiff = new wxBitmap( image );
 385 #endif
 386
 387     CreateAntiAliasedBitmap();
 388
 389     my_smile_xbm = new wxBitmap( (const char*)smile_bits, smile_width,
 390                                  smile_height, 1 );
 391
 392 #if !defined(__WINDOWS__) || wxUSE_XPM_IN_MSW
 393     // demonstrates XPM automatically using the mask when saving
 394     if ( m_bmpSmileXpm.Ok() )
 395         m_bmpSmileXpm.SaveFile(_T("saved.xpm"), wxBITMAP_TYPE_XPM);
 396 #endif
 397
 398 #if wxUSE_ICO_CUR
 399     image.Destroy();
 400
 401     if ( !image.LoadFile( dir + _T("horse.ico"), wxBITMAP_TYPE_ICO, 0 ) )
 402         wxLogError(wxT("Can't load first ICO image"));
 403     else
 404         my_horse_ico32 = new wxBitmap( image );
 405
 406     image.Destroy();
 407
 408     if ( !image.LoadFile( dir + _T("horse.ico"), wxBITMAP_TYPE_ICO, 1 ) )
 409         wxLogError(wxT("Can't load second ICO image"));
 410     else
 411         my_horse_ico16 = new wxBitmap( image );
 412
 413     image.Destroy();
 414
 415     if ( !image.LoadFile( dir + _T("horse.ico") ) )
 416         wxLogError(wxT("Can't load best ICO image"));
 417     else
 418         my_horse_ico = new wxBitmap( image );
 419
 420     image.Destroy();
 421
 422     if ( !image.LoadFile( dir + _T("horse.cur"), wxBITMAP_TYPE_CUR ) )
 423         wxLogError(wxT("Can't load best ICO image"));
 424     else
 425     {
 426         my_horse_cur = new wxBitmap( image );
 427         xH = 30 + image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X) ;
 428         yH = 2420 + image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y) ;
 429     }
 430
 431     m_ani_images = wxImage::GetImageCount ( dir + _T("horse3.ani"), wxBITMAP_TYPE_ANI );
 432     if (m_ani_images==0)
 433         wxLogError(wxT("No ANI-format images found"));
 434     else
 435         my_horse_ani = new wxBitmap [m_ani_images];
 436     int i ;
 437     for (i=0; i < m_ani_images; i++)
 438     {
 439         image.Destroy();
 440         if (!image.LoadFile( dir + _T("horse3.ani"), wxBITMAP_TYPE_ANI, i ))
 441         {
 442             wxString tmp = wxT("Can't load image number ");
 443             tmp << i ;
 444             wxLogError(tmp);
 445         }
 446         else
 447             my_horse_ani [i] = wxBitmap( image );
 448     }
 449
 450
 451 #endif
 452
 453     image.Destroy();
 454
 455     // test image loading from stream
 456     wxFile file(dir + _T("horse.bmp"));
 457     off_t len = file.Length();
 458     void *data = malloc(len);
 459     if ( file.Read(data, len) != len )
 460         wxLogError(_T("Reading bitmap file failed"));
 461     else
 462     {
 463         wxMemoryInputStream mis(data, len);
 464         if ( !image.LoadFile(mis) )
 465             wxLogError(wxT("Can't load BMP image from stream"));
 466         else
 467             my_horse_bmp2 = new wxBitmap( image );
 468     }
 469
 470     free(data);
 471 }
 472
 473 MyCanvas::~MyCanvas()
 474 {
 475     delete my_horse_pnm;
 476     delete my_horse_png;
 477     delete my_horse_jpeg;
 478     delete my_horse_gif;
 479     delete my_horse_bmp;
 480     delete my_horse_bmp2;
 481     delete my_horse_pcx;
 482     delete my_horse_tiff;
 483     delete my_horse_xpm;
 484     delete my_horse_ico32;
 485     delete my_horse_ico16;
 486     delete my_horse_ico;
 487     delete my_horse_cur;
 488     delete [] my_horse_ani;
 489     delete my_smile_xbm;
 490     delete my_square;
 491     delete my_anti;
 492 }
 493
 494 void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
 495 {
 496     wxPaintDC dc( this );
 497     PrepareDC( dc );
 498
 499     dc.DrawText( _T("Loaded image"), 30, 10 );
 500     if (my_square && my_square->Ok()) dc.DrawBitmap( *my_square, 30, 30 );
 501
 502     dc.DrawText( _T("Drawn directly"), 150, 10 );
 503     dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) );
 504     dc.SetPen( *wxBLACK_PEN );
 505     dc.DrawRectangle( 150, 30, 100, 100 );
 506     dc.SetBrush( *wxWHITE_BRUSH );
 507     dc.DrawRectangle( 170, 50, 60, 60 );
 508
 509     if (my_anti && my_anti->Ok())
 510         dc.DrawBitmap( *my_anti, 280, 30 );
 511
 512     dc.DrawText( _T("PNG handler"), 30, 135 );
 513     if (my_horse_png && my_horse_png->Ok())
 514     {
 515         dc.DrawBitmap( *my_horse_png, 30, 150 );
 516         wxRect rect(0,0,100,100);
 517         wxBitmap sub( my_horse_png->GetSubBitmap(rect) );
 518         dc.DrawText( _T("GetSubBitmap()"), 280, 190 );
 519         dc.DrawBitmap( sub, 280, 210 );
 520     }
 521
 522     dc.DrawText( _T("JPEG handler"), 30, 365 );
 523     if (my_horse_jpeg && my_horse_jpeg->Ok())
 524         dc.DrawBitmap( *my_horse_jpeg, 30, 380 );
 525
 526     dc.DrawText( _T("GIF handler"), 30, 595 );
 527     if (my_horse_gif && my_horse_gif->Ok())
 528         dc.DrawBitmap( *my_horse_gif, 30, 610 );
 529
 530     dc.DrawText( _T("PCX handler"), 30, 825 );
 531     if (my_horse_pcx && my_horse_pcx->Ok())
 532         dc.DrawBitmap( *my_horse_pcx, 30, 840 );
 533
 534     dc.DrawText( _T("BMP handler"), 30, 1055 );
 535     if (my_horse_bmp && my_horse_bmp->Ok())
 536         dc.DrawBitmap( *my_horse_bmp, 30, 1070 );
 537
 538     dc.DrawText( _T("BMP read from memory"), 280, 1055 );
 539     if (my_horse_bmp2 && my_horse_bmp2->Ok())
 540         dc.DrawBitmap( *my_horse_bmp2, 280, 1070 );
 541
 542     dc.DrawText( _T("PNM handler"), 30, 1285 );
 543     if (my_horse_pnm && my_horse_pnm->Ok())
 544         dc.DrawBitmap( *my_horse_pnm, 30, 1300 );
 545
 546     dc.DrawText( _T("TIFF handler"), 30, 1515 );
 547     if (my_horse_tiff && my_horse_tiff->Ok())
 548         dc.DrawBitmap( *my_horse_tiff, 30, 1530 );
 549
 550     dc.DrawText( _T("XPM handler"), 30, 1745 );
 551     if (my_horse_xpm && my_horse_xpm->Ok())
 552         dc.DrawBitmap( *my_horse_xpm, 30, 1760 );
 553
 554
 555     if (my_smile_xbm && my_smile_xbm->Ok())
 556     {
 557         dc.DrawText( _T("XBM bitmap"), 30, 1975 );
 558         dc.DrawText( _T("(green on red)"), 30, 1990 );
 559         dc.SetTextForeground( _T("GREEN") );
 560         dc.SetTextBackground( _T("RED") );
 561         dc.DrawBitmap( *my_smile_xbm, 30, 2010 );
 562
 563         dc.SetTextForeground( wxT("BLACK") );
 564         dc.DrawText( _T("After wxImage conversion"), 150, 1975 );
 565         dc.DrawText( _T("(red on white)"), 150, 1990 );
 566         dc.SetTextForeground( wxT("RED") );
 567         wxImage i = my_smile_xbm->ConvertToImage();
 568         i.SetMaskColour( 255, 255, 255 );
 569         i.Replace( 0, 0, 0,
 570                wxRED_PEN->GetColour().Red(),
 571                wxRED_PEN->GetColour().Green(),
 572                wxRED_PEN->GetColour().Blue() );
 573         dc.DrawBitmap( wxBitmap(i), 150, 2010, TRUE );
 574         dc.SetTextForeground( wxT("BLACK") );
 575     }
 576
 577
 578     wxBitmap mono( 60,50,1 );
 579     wxMemoryDC memdc;
 580     memdc.SelectObject( mono );
 581     memdc.SetPen( *wxBLACK_PEN );
 582     memdc.SetBrush( *wxWHITE_BRUSH );
 583     memdc.DrawRectangle( 0,0,60,50 );
 584     memdc.SetTextForeground( *wxBLACK );
 585     memdc.DrawText( _T("Hi!"), 5, 5 );
 586     memdc.SetBrush( *wxBLACK_BRUSH );
 587     memdc.DrawRectangle( 33,5,20,20 );
 588     memdc.SetPen( *wxRED_PEN );
 589     memdc.DrawLine( 5, 42, 50, 42 );
 590     memdc.SelectObject( wxNullBitmap );
 591
 592     if (mono.Ok())
 593     {
 594         dc.DrawText( _T("Mono bitmap"), 30, 2095 );
 595         dc.DrawText( _T("(red on green)"), 30, 2110 );
 596         dc.SetTextForeground( wxT("RED") );
 597         dc.SetTextBackground( wxT("GREEN") );
 598         dc.DrawBitmap( mono, 30, 2130 );
 599
 600         dc.SetTextForeground( wxT("BLACK") );
 601         dc.DrawText( _T("After wxImage conversion"), 150, 2095 );
 602         dc.DrawText( _T("(red on white)"), 150, 2110 );
 603         dc.SetTextForeground( wxT("RED") );
 604         wxImage i = mono.ConvertToImage();
 605         i.SetMaskColour( 255,255,255 );
 606         i.Replace( 0,0,0,
 607                wxRED_PEN->GetColour().Red(),
 608                wxRED_PEN->GetColour().Green(),
 609                wxRED_PEN->GetColour().Blue() );
 610         dc.DrawBitmap( wxBitmap(i), 150, 2130, TRUE );
 611         dc.SetTextForeground( wxT("BLACK") );
 612     }
 613
 614     dc.DrawText(_T("XPM bitmap"), 30, 2230);
 615     if ( m_bmpSmileXpm.Ok() )
 616     {
 617         dc.DrawBitmap(m_bmpSmileXpm, 30, 2250, TRUE);
 618     }
 619
 620     dc.DrawText(_T("XPM icon"), 150, 2230);
 621     if ( m_iconSmileXpm.Ok() )
 622     {
 623         dc.DrawIcon(m_iconSmileXpm, 150, 2250);
 624     }
 625
 626     dc.DrawText( _T("ICO handler (1st image)"), 30, 2290 );
 627     if (my_horse_ico32 && my_horse_ico32->Ok())
 628         dc.DrawBitmap( *my_horse_ico32, 30, 2330, TRUE );
 629
 630     dc.DrawText( _T("ICO handler (2nd image)"), 230, 2290 );
 631     if (my_horse_ico16 && my_horse_ico16->Ok())
 632         dc.DrawBitmap( *my_horse_ico16, 230, 2330, TRUE );
 633
 634     dc.DrawText( _T("ICO handler (best image)"), 430, 2290 );
 635     if (my_horse_ico && my_horse_ico->Ok())
 636         dc.DrawBitmap( *my_horse_ico, 430, 2330, TRUE );
 637
 638     dc.DrawText( _T("CUR handler"), 30, 2390 );
 639     if (my_horse_cur && my_horse_cur->Ok())
 640     {
 641         dc.DrawBitmap( *my_horse_cur, 30, 2420, TRUE );
 642         dc.SetPen (*wxRED_PEN);
 643         dc.DrawLine (xH-10,yH,xH+10,yH);
 644         dc.DrawLine (xH,yH-10,xH,yH+10);
 645     }
 646     dc.DrawText( _T("ANI handler"), 230, 2390 );
 647     int i ;
 648     for (i=0; i < m_ani_images; i ++)
 649         if (my_horse_ani[i].Ok())
 650         {
 651             dc.DrawBitmap( my_horse_ani[i], 230 + i * 2 * my_horse_ani[i].GetWidth() , 2420, TRUE );
 652         }
 653 }
 654
 655 void MyCanvas::CreateAntiAliasedBitmap()
 656 {
 657   wxBitmap bitmap( 300, 300 );
 658
 659   wxMemoryDC dc;
 660
 661   dc.SelectObject( bitmap );
 662
 663   dc.Clear();
 664
 665   dc.SetFont( wxFont( 24, wxDECORATIVE, wxNORMAL, wxNORMAL) );
 666   dc.SetTextForeground( wxT("RED") );
 667   dc.DrawText( _T("This is anti-aliased Text."), 20, 20 );
 668   dc.DrawText( _T("And a Rectangle."), 20, 60 );
 669
 670   dc.SetBrush( *wxRED_BRUSH );
 671   dc.SetPen( *wxTRANSPARENT_PEN );
 672   dc.DrawRoundedRectangle( 20, 100, 200, 180, 20 );
 673
 674   wxImage original= bitmap.ConvertToImage();
 675   wxImage anti( 150, 150 );
 676
 677   /* This is quite slow, but safe. Use wxImage::GetData() for speed instead. */
 678
 679   for (int y = 1; y < 149; y++)
 680     for (int x = 1; x < 149; x++)
 681     {
 682        int red = original.GetRed( x*2, y*2 ) +
 683                  original.GetRed( x*2-1, y*2 ) +
 684                  original.GetRed( x*2, y*2+1 ) +
 685                  original.GetRed( x*2+1, y*2+1 );
 686        red = red/4;
 687
 688        int green = original.GetGreen( x*2, y*2 ) +
 689                    original.GetGreen( x*2-1, y*2 ) +
 690                    original.GetGreen( x*2, y*2+1 ) +
 691                    original.GetGreen( x*2+1, y*2+1 );
 692        green = green/4;
 693
 694        int blue = original.GetBlue( x*2, y*2 ) +
 695                   original.GetBlue( x*2-1, y*2 ) +
 696                   original.GetBlue( x*2, y*2+1 ) +
 697                   original.GetBlue( x*2+1, y*2+1 );
 698        blue = blue/4;
 699        anti.SetRGB( x, y, red, green, blue );
 700     }
 701   my_anti = new wxBitmap(anti);
 702 }
 703
 704 // MyFrame
 705
 706 const int ID_QUIT  = 108;
 707 const int ID_ABOUT = 109;
 708 const int ID_NEW = 110;
 709
 710 IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )
 711
 712 BEGIN_EVENT_TABLE(MyFrame,wxFrame)
 713   EVT_MENU    (ID_ABOUT, MyFrame::OnAbout)
 714   EVT_MENU    (ID_QUIT,  MyFrame::OnQuit)
 715   EVT_MENU    (ID_NEW,  MyFrame::OnNewFrame)
 716 END_EVENT_TABLE()
 717
 718 MyFrame::MyFrame()
 719        : wxFrame( (wxFrame *)NULL, -1, _T("wxImage sample"),
 720                   wxPoint(20,20), wxSize(470,360) )
 721 {
 722   wxMenu *file_menu = new wxMenu();
 723   file_menu->Append( ID_NEW, _T("&Show image..."));
 724   file_menu->AppendSeparator();
 725   file_menu->Append( ID_ABOUT, _T("&About..."));
 726   file_menu->AppendSeparator();
 727   file_menu->Append( ID_QUIT, _T("E&xit"));
 728
 729   wxMenuBar *menu_bar = new wxMenuBar();
 730   menu_bar->Append(file_menu, _T("&File"));
 731
 732   SetMenuBar( menu_bar );
 733
 734   CreateStatusBar(2);
 735   int widths[] = { -1, 100 };
 736   SetStatusWidths( 2, widths );
 737
 738   m_canvas = new MyCanvas( this, -1, wxPoint(0,0), wxSize(10,10) );
 739
 740   // 500 width * 2500 height
 741   m_canvas->SetScrollbars( 10, 10, 50, 250 );
 742 }
 743
 744 void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
 745 {
 746   Close( TRUE );
 747 }
 748
 749 void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) )
 750 {
 751   (void)wxMessageBox( _T("wxImage demo\n")
 752                       _T("Robert Roebling (c) 1998,2000"),
 753                       _T("About wxImage Demo"), wxICON_INFORMATION | wxOK );
 754 }
 755
 756 void MyFrame::OnNewFrame( wxCommandEvent &WXUNUSED(event) )
 757 {
 758     wxString filename = wxFileSelector(_T("Select image file"));
 759     if ( !filename )
 760         return;
 761
 762     wxImage image;
 763     if ( !image.LoadFile(filename) )
 764     {
 765         wxLogError(_T("Couldn't load image from '%s'."), filename.c_str());
 766
 767         return;
 768     }
 769
 770     (new MyImageFrame(this, wxBitmap(image)))->Show();
 771 }
 772
 773 //-----------------------------------------------------------------------------
 774 // MyApp
 775 //-----------------------------------------------------------------------------
 776
 777 bool MyApp::OnInit()
 778 {
 779 #if wxUSE_LIBPNG
 780   wxImage::AddHandler( new wxPNGHandler );
 781 #endif
 782
 783 #if wxUSE_LIBJPEG
 784   wxImage::AddHandler( new wxJPEGHandler );
 785 #endif
 786
 787 #if wxUSE_LIBTIFF
 788   wxImage::AddHandler( new wxTIFFHandler );
 789 #endif
 790
 791 #if wxUSE_GIF
 792   wxImage::AddHandler( new wxGIFHandler );
 793 #endif
 794
 795 #if wxUSE_PCX
 796   wxImage::AddHandler( new wxPCXHandler );
 797 #endif
 798
 799 #if wxUSE_PNM
 800   wxImage::AddHandler( new wxPNMHandler );
 801 #endif
 802
 803 #if wxUSE_XPM
 804   wxImage::AddHandler( new wxXPMHandler );
 805 #endif
 806
 807 #if wxUSE_ICO_CUR
 808   wxImage::AddHandler( new wxICOHandler );
 809   wxImage::AddHandler( new wxCURHandler );
 810   wxImage::AddHandler( new wxANIHandler );
 811 #endif
 812
 813   wxFrame *frame = new MyFrame();
 814   frame->Show( TRUE );
 815
 816   return TRUE;
 817 }
 818