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