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