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