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