samples/image/image.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        samples/image/image.cpp
   3 // Purpose:     sample showing operations with wxImage
   4 // Author:      Robert Roebling
   5 // Modified by:
   6 // Created:     1998
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998-2005 Robert Roebling
   9 // License:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx/wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifdef __BORLANDC__
  16 #pragma hdrstop
  17 #endif
  18
  19 #ifndef WX_PRECOMP
  20     #include "wx/wx.h"
  21 #endif
  22
  23 #include "wx/image.h"
  24 #include "wx/file.h"
  25 #include "wx/filename.h"
  26 #include "wx/mstream.h"
  27 #include "wx/wfstream.h"
  28 #include "wx/quantize.h"
  29
  30 #if wxUSE_CLIPBOARD
  31     #include "wx/dataobj.h"
  32     #include "wx/clipbrd.h"
  33 #endif // wxUSE_CLIPBOARD
  34
  35 #include "smile.xbm"
  36 #include "smile.xpm"
  37
  38 #if defined(__WXMSW__)
  39     #ifdef wxHAVE_RAW_BITMAP
  40     #include "wx/rawbmp.h"
  41     #endif
  42 #endif
  43
  44 #if defined(__WXMAC__) || defined(__WXGTK__)
  45     #define wxHAVE_RAW_BITMAP
  46     #include "wx/rawbmp.h"
  47 #endif
  48
  49 // derived classes
  50
  51 class MyFrame;
  52 class MyApp;
  53
  54 // MyCanvas
  55
  56 class MyCanvas: public wxScrolledWindow
  57 {
  58 public:
  59     MyCanvas( wxWindow *parent, wxWindowID, const wxPoint &pos, const wxSize &size );
  60     ~MyCanvas();
  61     void OnPaint( wxPaintEvent &event );
  62     void CreateAntiAliasedBitmap();
  63
  64     wxBitmap  my_horse_png;
  65     wxBitmap  my_horse_jpeg;
  66     wxBitmap  my_horse_gif;
  67     wxBitmap  my_horse_bmp;
  68     wxBitmap  my_horse_bmp2;
  69     wxBitmap  my_horse_pcx;
  70     wxBitmap  my_horse_pnm;
  71     wxBitmap  my_horse_tiff;
  72     wxBitmap  my_horse_xpm;
  73     wxBitmap  my_horse_ico32;
  74     wxBitmap  my_horse_ico16;
  75     wxBitmap  my_horse_ico;
  76     wxBitmap  my_horse_cur;
  77
  78     wxBitmap  my_smile_xbm;
  79     wxBitmap  my_square;
  80     wxBitmap  my_anti;
  81
  82     wxBitmap  my_horse_asciigrey_pnm;
  83     wxBitmap  my_horse_rawgrey_pnm;
  84
  85     wxBitmap  colorized_horse_jpeg;
  86     wxBitmap  my_cmyk_jpeg;
  87
  88     wxBitmap my_toucan;
  89     wxBitmap my_toucan_flipped_horiz;
  90     wxBitmap my_toucan_flipped_vert;
  91     wxBitmap my_toucan_flipped_both;
  92     wxBitmap my_toucan_grey;
  93     wxBitmap my_toucan_head;
  94
  95     int xH, yH ;
  96     int m_ani_images;
  97     wxBitmap *my_horse_ani;
  98
  99 private:
 100     wxBitmap m_bmpSmileXpm;
 101     wxIcon   m_iconSmileXpm;
 102
 103     DECLARE_EVENT_TABLE()
 104 };
 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 #ifdef wxHAVE_RAW_BITMAP
 118     void OnTestRawBitmap( wxCommandEvent &event );
 119 #endif // wxHAVE_RAW_BITMAP
 120     void OnQuit( wxCommandEvent &event );
 121
 122 #if wxUSE_CLIPBOARD
 123     void OnCopy(wxCommandEvent& event);
 124     void OnPaste(wxCommandEvent& event);
 125 #endif // wxUSE_CLIPBOARD
 126
 127     MyCanvas         *m_canvas;
 128
 129 private:
 130     DECLARE_DYNAMIC_CLASS(MyFrame)
 131     DECLARE_EVENT_TABLE()
 132 };
 133
 134 class MyImageFrame : public wxFrame
 135 {
 136 public:
 137     MyImageFrame(wxFrame *parent, const wxBitmap& bitmap)
 138         : wxFrame(parent, wxID_ANY, _T("Double click to save"),
 139                   wxDefaultPosition, wxDefaultSize,
 140                   wxCAPTION | wxSYSTEM_MENU | wxCLOSE_BOX),
 141                   m_bitmap(bitmap)
 142     {
 143         SetClientSize(bitmap.GetWidth(), bitmap.GetHeight());
 144     }
 145
 146     void OnEraseBackground(wxEraseEvent& WXUNUSED(event))
 147     {
 148         // do nothing here to be able to see how transparent images are shown
 149     }
 150
 151     void OnPaint(wxPaintEvent& WXUNUSED(event))
 152     {
 153         wxPaintDC dc( this );
 154         dc.DrawBitmap( m_bitmap, 0, 0, true /* use mask */ );
 155     }
 156
 157     void OnSave(wxMouseEvent& WXUNUSED(event))
 158     {
 159 #if wxUSE_FILEDLG
 160         wxImage image = m_bitmap.ConvertToImage();
 161
 162         wxString savefilename = wxFileSelector( wxT("Save Image"),
 163                                                 wxEmptyString,
 164                                                 wxEmptyString,
 165                                                 (const wxChar *)NULL,
 166                                                 wxT("BMP files (*.bmp)|*.bmp|")
 167                                                 wxT("PNG files (*.png)|*.png|")
 168                                                 wxT("JPEG files (*.jpg)|*.jpg|")
 169                                                 wxT("GIF files (*.gif)|*.gif|")
 170                                                 wxT("TIFF files (*.tif)|*.tif|")
 171                                                 wxT("PCX files (*.pcx)|*.pcx|")
 172                                                 wxT("ICO files (*.ico)|*.ico|")
 173                                                 wxT("CUR files (*.cur)|*.cur"),
 174                                                 wxFD_SAVE,
 175                                                 this);
 176
 177         if ( savefilename.empty() )
 178             return;
 179
 180         wxString extension;
 181         wxFileName::SplitPath(savefilename, NULL, NULL, &extension);
 182
 183         bool saved = false;
 184         if ( extension == _T("bpp") )
 185         {
 186             static const int bppvalues[] =
 187             {
 188                 wxBMP_1BPP,
 189                 wxBMP_1BPP_BW,
 190                 wxBMP_4BPP,
 191                 wxBMP_8BPP,
 192                 wxBMP_8BPP_GREY,
 193                 wxBMP_8BPP_RED,
 194                 wxBMP_8BPP_PALETTE,
 195                 wxBMP_24BPP
 196             };
 197
 198             const wxString bppchoices[] =
 199             {
 200                 _T("1 bpp color"),
 201                 _T("1 bpp B&W"),
 202                 _T("4 bpp color"),
 203                 _T("8 bpp color"),
 204                 _T("8 bpp greyscale"),
 205                 _T("8 bpp red"),
 206                 _T("8 bpp own palette"),
 207                 _T("24 bpp")
 208             };
 209
 210             int bppselection = wxGetSingleChoiceIndex(_T("Set BMP BPP"),
 211                                                       _T("Image sample: save file"),
 212                                                       WXSIZEOF(bppchoices),
 213                                                       bppchoices,
 214                                                       this);
 215             if ( bppselection != -1 )
 216             {
 217                 int format = bppvalues[bppselection];
 218                 image.SetOption(wxIMAGE_OPTION_BMP_FORMAT, format);
 219
 220                 if ( format == wxBMP_8BPP_PALETTE )
 221                 {
 222                     unsigned char *cmap = new unsigned char [256];
 223                     for ( int i = 0; i < 256; i++ )
 224                         cmap[i] = (unsigned char)i;
 225                     image.SetPalette(wxPalette(256, cmap, cmap, cmap));
 226
 227                     delete[] cmap;
 228                 }
 229             }
 230         }
 231         else if ( extension == _T("png") )
 232         {
 233             static const int pngvalues[] =
 234             {
 235                 wxPNG_TYPE_COLOUR,
 236                 wxPNG_TYPE_COLOUR,
 237                 wxPNG_TYPE_GREY,
 238                 wxPNG_TYPE_GREY,
 239                 wxPNG_TYPE_GREY_RED,
 240                 wxPNG_TYPE_GREY_RED,
 241             };
 242
 243             const wxString pngchoices[] =
 244             {
 245                 _T("Colour 8bpp"),
 246                 _T("Colour 16bpp"),
 247                 _T("Grey 8bpp"),
 248                 _T("Grey 16bpp"),
 249                 _T("Grey red 8bpp"),
 250                 _T("Grey red 16bpp"),
 251             };
 252
 253             int sel = wxGetSingleChoiceIndex(_T("Set PNG format"),
 254                                              _T("Image sample: save file"),
 255                                              WXSIZEOF(pngchoices),
 256                                              pngchoices,
 257                                              this);
 258             if ( sel != -1 )
 259             {
 260                 image.SetOption(wxIMAGE_OPTION_PNG_FORMAT, pngvalues[sel]);
 261                 image.SetOption(wxIMAGE_OPTION_PNG_BITDEPTH, sel % 2 ? 16 : 8);
 262             }
 263         }
 264         else if ( extension == _T("cur") )
 265         {
 266             image.Rescale(32,32);
 267             image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_X, 0);
 268             image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y, 0);
 269             // This shows how you can save an image with explicitly
 270             // specified image format:
 271             saved = image.SaveFile(savefilename, wxBITMAP_TYPE_CUR);
 272         }
 273
 274         if ( !saved )
 275         {
 276             // This one guesses image format from filename extension
 277             // (it may fail if the extension is not recognized):
 278             image.SaveFile(savefilename);
 279         }
 280 #endif // wxUSE_FILEDLG
 281     }
 282
 283 private:
 284     wxBitmap m_bitmap;
 285
 286     DECLARE_EVENT_TABLE()
 287 };
 288
 289 #ifdef wxHAVE_RAW_BITMAP
 290
 291 #include "wx/rawbmp.h"
 292
 293 class MyRawBitmapFrame : public wxFrame
 294 {
 295 public:
 296     enum
 297     {
 298         BORDER = 15,
 299         SIZE = 150,
 300         REAL_SIZE = SIZE - 2*BORDER
 301     };
 302
 303     MyRawBitmapFrame(wxFrame *parent)
 304         : wxFrame(parent, wxID_ANY, _T("Raw bitmaps (how exciting)")),
 305           m_bitmap(SIZE, SIZE, 24),
 306           m_alphaBitmap(SIZE, SIZE, 32)
 307     {
 308         SetClientSize(SIZE, SIZE*2+25);
 309
 310         InitAlphaBitmap();
 311         InitBitmap();
 312
 313     }
 314
 315     void InitAlphaBitmap()
 316     {
 317         // First, clear the whole bitmap by making it alpha
 318         {
 319             wxAlphaPixelData data( m_alphaBitmap, wxPoint(0,0), wxSize(SIZE, SIZE) );
 320             if ( !data )
 321             {
 322                 wxLogError(_T("Failed to gain raw access to bitmap data"));
 323                 return;
 324             }
 325             data.UseAlpha();
 326             wxAlphaPixelData::Iterator p(data);
 327             for ( int y = 0; y < SIZE; ++y )
 328             {
 329                 wxAlphaPixelData::Iterator rowStart = p;
 330                 for ( int x = 0; x < SIZE; ++x )
 331                 {
 332                     p.Alpha() = 0;
 333                     ++p; // same as p.OffsetX(1)
 334                 }
 335                 p = rowStart;
 336                 p.OffsetY(data, 1);
 337             }
 338         }
 339
 340         // Then, draw colourful alpha-blended stripes
 341         wxAlphaPixelData data(m_alphaBitmap, wxPoint(BORDER, BORDER),
 342                               wxSize(REAL_SIZE, REAL_SIZE));
 343         if ( !data )
 344         {
 345             wxLogError(_T("Failed to gain raw access to bitmap data"));
 346             return;
 347         }
 348
 349         data.UseAlpha();
 350         wxAlphaPixelData::Iterator p(data);
 351
 352         for ( int y = 0; y < REAL_SIZE; ++y )
 353         {
 354             wxAlphaPixelData::Iterator rowStart = p;
 355
 356             int r = y < REAL_SIZE/3 ? 255 : 0,
 357                 g = (REAL_SIZE/3 <= y) && (y < 2*(REAL_SIZE/3)) ? 255 : 0,
 358                 b = 2*(REAL_SIZE/3) <= y ? 255 : 0;
 359
 360             for ( int x = 0; x < REAL_SIZE; ++x )
 361             {
 362                 // note that RGB must be premultiplied by alpha
 363                 unsigned a = (wxAlphaPixelData::Iterator::ChannelType)((x*255.)/REAL_SIZE);
 364                 p.Red() = r * a / 256;
 365                 p.Green() = g * a / 256;
 366                 p.Blue() = b * a / 256;
 367                 p.Alpha() = a;
 368
 369                 ++p; // same as p.OffsetX(1)
 370             }
 371
 372             p = rowStart;
 373             p.OffsetY(data, 1);
 374         }
 375     }
 376
 377     void InitBitmap()
 378     {
 379         // draw some colourful stripes without alpha
 380         wxNativePixelData data(m_bitmap);
 381         if ( !data )
 382         {
 383             wxLogError(_T("Failed to gain raw access to bitmap data"));
 384             return;
 385         }
 386
 387         wxNativePixelData::Iterator p(data);
 388         for ( int y = 0; y < SIZE; ++y )
 389         {
 390             wxNativePixelData::Iterator rowStart = p;
 391
 392             int r = y < SIZE/3 ? 255 : 0,
 393                 g = (SIZE/3 <= y) && (y < 2*(SIZE/3)) ? 255 : 0,
 394                 b = 2*(SIZE/3) <= y ? 255 : 0;
 395
 396             for ( int x = 0; x < SIZE; ++x )
 397             {
 398                 p.Red() = r;
 399                 p.Green() = g;
 400                 p.Blue() = b;
 401                 ++p; // same as p.OffsetX(1)
 402             }
 403
 404             p = rowStart;
 405             p.OffsetY(data, 1);
 406         }
 407     }
 408
 409     void OnPaint(wxPaintEvent& WXUNUSED(event))
 410     {
 411         wxPaintDC dc( this );
 412         dc.DrawText(_T("This is alpha and raw bitmap test"), 0, BORDER);
 413         dc.DrawText(_T("This is alpha and raw bitmap test"), 0, SIZE/2 - BORDER);
 414         dc.DrawText(_T("This is alpha and raw bitmap test"), 0, SIZE - 2*BORDER);
 415         dc.DrawBitmap( m_alphaBitmap, 0, 0, true /* use mask */ );
 416
 417         dc.DrawText(_T("Raw bitmap access without alpha"), 0, SIZE+5);
 418         dc.DrawBitmap( m_bitmap, 0, SIZE+5+dc.GetCharHeight());
 419     }
 420
 421 private:
 422     wxBitmap m_bitmap;
 423     wxBitmap m_alphaBitmap;
 424
 425     DECLARE_EVENT_TABLE()
 426 };
 427
 428 #endif // wxHAVE_RAW_BITMAP
 429
 430 // MyApp
 431
 432 class MyApp: public wxApp
 433 {
 434 public:
 435     virtual bool OnInit();
 436 };
 437
 438 // main program
 439
 440 IMPLEMENT_APP(MyApp)
 441
 442 // MyCanvas
 443
 444 BEGIN_EVENT_TABLE(MyImageFrame, wxFrame)
 445     EVT_ERASE_BACKGROUND(MyImageFrame::OnEraseBackground)
 446     EVT_PAINT(MyImageFrame::OnPaint)
 447     EVT_LEFT_DCLICK(MyImageFrame::OnSave)
 448 END_EVENT_TABLE()
 449
 450 #ifdef wxHAVE_RAW_BITMAP
 451
 452 BEGIN_EVENT_TABLE(MyRawBitmapFrame, wxFrame)
 453     EVT_PAINT(MyRawBitmapFrame::OnPaint)
 454 END_EVENT_TABLE()
 455
 456 #endif // wxHAVE_RAW_BITMAP
 457
 458 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
 459   EVT_PAINT(MyCanvas::OnPaint)
 460 END_EVENT_TABLE()
 461
 462 MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
 463                     const wxPoint &pos, const wxSize &size )
 464         : wxScrolledWindow( parent, id, pos, size, wxSUNKEN_BORDER )
 465           , m_bmpSmileXpm((const char **) smile_xpm)
 466           , m_iconSmileXpm((const char **) smile_xpm)
 467 {
 468     my_horse_ani = NULL;
 469     m_ani_images = 0 ;
 470
 471     SetBackgroundColour(* wxWHITE);
 472
 473     wxBitmap bitmap( 100, 100 );
 474
 475     wxMemoryDC dc;
 476     dc.SelectObject( bitmap );
 477     dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) );
 478     dc.SetPen( *wxBLACK_PEN );
 479     dc.DrawRectangle( 0, 0, 100, 100 );
 480     dc.SetBrush( *wxWHITE_BRUSH );
 481     dc.DrawRectangle( 20, 20, 60, 60 );
 482     dc.SelectObject( wxNullBitmap );
 483
 484     // try to find the directory with our images
 485     wxString dir;
 486     if ( wxFile::Exists(wxT("./horse.png")) )
 487         dir = wxT("./");
 488     else if ( wxFile::Exists(wxT("../horse.png")) )
 489         dir = wxT("../");
 490     else
 491         wxLogWarning(wxT("Can't find image files in either '.' or '..'!"));
 492
 493     wxImage image = bitmap.ConvertToImage();
 494
 495 #if wxUSE_LIBPNG
 496     if ( !image.SaveFile( dir + _T("test.png"), wxBITMAP_TYPE_PNG ))
 497         wxLogError(wxT("Can't save file"));
 498
 499     image.Destroy();
 500
 501     if ( image.LoadFile( dir + _T("test.png") ) )
 502         my_square = wxBitmap( image );
 503
 504     image.Destroy();
 505
 506     if ( !image.LoadFile( dir + _T("horse.png")) )
 507         wxLogError(wxT("Can't load PNG image"));
 508     else
 509         my_horse_png = wxBitmap( image );
 510
 511     if ( !image.LoadFile( dir + _T("toucan.png")) )
 512         wxLogError(wxT("Can't load PNG image"));
 513     else
 514         my_toucan = wxBitmap(image);
 515
 516     my_toucan_flipped_horiz = wxBitmap(image.Mirror(true));
 517     my_toucan_flipped_vert = wxBitmap(image.Mirror(false));
 518     my_toucan_flipped_both = wxBitmap(image.Mirror(true).Mirror(false));
 519     my_toucan_grey = wxBitmap(image.ConvertToGreyscale());
 520     my_toucan_head = wxBitmap(image.GetSubImage(wxRect(40, 7, 80, 60)));
 521
 522 #endif // wxUSE_LIBPNG
 523
 524 #if wxUSE_LIBJPEG
 525     image.Destroy();
 526
 527     if ( !image.LoadFile( dir + _T("horse.jpg")) )
 528         wxLogError(wxT("Can't load JPG image"));
 529     else
 530     {
 531         my_horse_jpeg = wxBitmap( image );
 532
 533         // Colorize by rotating green hue to red
 534         wxImage::HSVValue greenHSV = wxImage::RGBtoHSV(wxImage::RGBValue(0, 255, 0));
 535         wxImage::HSVValue redHSV = wxImage::RGBtoHSV(wxImage::RGBValue(255, 0, 0));
 536         image.RotateHue(redHSV.hue - greenHSV.hue);
 537         colorized_horse_jpeg = wxBitmap( image );
 538     }
 539
 540     if ( !image.LoadFile( dir + _T("cmyk.jpg")) )
 541         wxLogError(_T("Can't load CMYK JPG image"));
 542     else
 543         my_cmyk_jpeg = wxBitmap(image);
 544 #endif // wxUSE_LIBJPEG
 545
 546 #if wxUSE_GIF
 547     image.Destroy();
 548
 549     if ( !image.LoadFile( dir + _T("horse.gif" )) )
 550         wxLogError(wxT("Can't load GIF image"));
 551     else
 552         my_horse_gif = wxBitmap( image );
 553 #endif
 554
 555 #if wxUSE_PCX
 556     image.Destroy();
 557
 558     if ( !image.LoadFile( dir + _T("horse.pcx"), wxBITMAP_TYPE_PCX ) )
 559         wxLogError(wxT("Can't load PCX image"));
 560     else
 561         my_horse_pcx = wxBitmap( image );
 562 #endif
 563
 564     image.Destroy();
 565
 566     if ( !image.LoadFile( dir + _T("horse.bmp"), wxBITMAP_TYPE_BMP ) )
 567         wxLogError(wxT("Can't load BMP image"));
 568     else
 569         my_horse_bmp = wxBitmap( image );
 570
 571 #if wxUSE_XPM
 572     image.Destroy();
 573
 574     if ( !image.LoadFile( dir + _T("horse.xpm"), wxBITMAP_TYPE_XPM ) )
 575         wxLogError(wxT("Can't load XPM image"));
 576     else
 577         my_horse_xpm = wxBitmap( image );
 578
 579     if ( !image.SaveFile( dir + _T("test.xpm"), wxBITMAP_TYPE_XPM ))
 580         wxLogError(wxT("Can't save file"));
 581 #endif
 582
 583 #if wxUSE_PNM
 584     image.Destroy();
 585
 586     if ( !image.LoadFile( dir + _T("horse.pnm"), wxBITMAP_TYPE_PNM ) )
 587         wxLogError(wxT("Can't load PNM image"));
 588     else
 589         my_horse_pnm = wxBitmap( image );
 590
 591     image.Destroy();
 592
 593     if ( !image.LoadFile( dir + _T("horse_ag.pnm"), wxBITMAP_TYPE_PNM ) )
 594         wxLogError(wxT("Can't load PNM image"));
 595     else
 596         my_horse_asciigrey_pnm = wxBitmap( image );
 597
 598     image.Destroy();
 599
 600     if ( !image.LoadFile( dir + _T("horse_rg.pnm"), wxBITMAP_TYPE_PNM ) )
 601         wxLogError(wxT("Can't load PNM image"));
 602     else
 603         my_horse_rawgrey_pnm = wxBitmap( image );
 604 #endif
 605
 606 #if wxUSE_LIBTIFF
 607     image.Destroy();
 608
 609     if ( !image.LoadFile( dir + _T("horse.tif"), wxBITMAP_TYPE_TIF ) )
 610         wxLogError(wxT("Can't load TIFF image"));
 611     else
 612         my_horse_tiff = wxBitmap( image );
 613 #endif
 614
 615     CreateAntiAliasedBitmap();
 616
 617     my_smile_xbm = wxBitmap( (const char*)smile_bits, smile_width,
 618                                  smile_height, 1 );
 619
 620     // demonstrates XPM automatically using the mask when saving
 621     if ( m_bmpSmileXpm.Ok() )
 622         m_bmpSmileXpm.SaveFile(_T("saved.xpm"), wxBITMAP_TYPE_XPM);
 623
 624 #if wxUSE_ICO_CUR
 625     image.Destroy();
 626
 627     if ( !image.LoadFile( dir + _T("horse.ico"), wxBITMAP_TYPE_ICO, 0 ) )
 628         wxLogError(wxT("Can't load first ICO image"));
 629     else
 630         my_horse_ico32 = wxBitmap( image );
 631
 632     image.Destroy();
 633
 634     if ( !image.LoadFile( dir + _T("horse.ico"), wxBITMAP_TYPE_ICO, 1 ) )
 635         wxLogError(wxT("Can't load second ICO image"));
 636     else
 637         my_horse_ico16 = wxBitmap( image );
 638
 639     image.Destroy();
 640
 641     if ( !image.LoadFile( dir + _T("horse.ico") ) )
 642         wxLogError(wxT("Can't load best ICO image"));
 643     else
 644         my_horse_ico = wxBitmap( image );
 645
 646     image.Destroy();
 647
 648     if ( !image.LoadFile( dir + _T("horse.cur"), wxBITMAP_TYPE_CUR ) )
 649         wxLogError(wxT("Can't load best ICO image"));
 650     else
 651     {
 652         my_horse_cur = wxBitmap( image );
 653         xH = 30 + image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X) ;
 654         yH = 2420 + image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y) ;
 655     }
 656
 657     m_ani_images = wxImage::GetImageCount ( dir + _T("horse3.ani"), wxBITMAP_TYPE_ANI );
 658     if (m_ani_images==0)
 659         wxLogError(wxT("No ANI-format images found"));
 660     else
 661         my_horse_ani = new wxBitmap [m_ani_images];
 662     int i ;
 663     for (i=0; i < m_ani_images; i++)
 664     {
 665         image.Destroy();
 666         if (!image.LoadFile( dir + _T("horse3.ani"), wxBITMAP_TYPE_ANI, i ))
 667         {
 668             wxString tmp = wxT("Can't load image number ");
 669             tmp << i ;
 670             wxLogError(tmp);
 671         }
 672         else
 673             my_horse_ani [i] = wxBitmap( image );
 674     }
 675 #endif // wxUSE_ICO_CUR
 676
 677     image.Destroy();
 678
 679     // test image loading from stream
 680     wxFile file(dir + _T("horse.bmp"));
 681     if ( file.IsOpened() )
 682     {
 683         wxFileOffset len = file.Length();
 684         size_t dataSize = (size_t)len;
 685         void *data = malloc(dataSize);
 686         if ( file.Read(data, dataSize) != len )
 687             wxLogError(_T("Reading bitmap file failed"));
 688         else
 689         {
 690             wxMemoryInputStream mis(data, dataSize);
 691             if ( !image.LoadFile(mis) )
 692                 wxLogError(wxT("Can't load BMP image from stream"));
 693             else
 694                 my_horse_bmp2 = wxBitmap( image );
 695         }
 696
 697         free(data);
 698     }
 699 }
 700
 701 MyCanvas::~MyCanvas()
 702 {
 703     delete [] my_horse_ani;
 704 }
 705
 706 void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
 707 {
 708     wxPaintDC dc( this );
 709     PrepareDC( dc );
 710
 711     dc.DrawText( _T("Loaded image"), 30, 10 );
 712     if (my_square.Ok())
 713         dc.DrawBitmap( my_square, 30, 30 );
 714
 715     dc.DrawText( _T("Drawn directly"), 150, 10 );
 716     dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) );
 717     dc.SetPen( *wxBLACK_PEN );
 718     dc.DrawRectangle( 150, 30, 100, 100 );
 719     dc.SetBrush( *wxWHITE_BRUSH );
 720     dc.DrawRectangle( 170, 50, 60, 60 );
 721
 722     if (my_anti.Ok())
 723         dc.DrawBitmap( my_anti, 280, 30 );
 724
 725     dc.DrawText( _T("PNG handler"), 30, 135 );
 726     if (my_horse_png.Ok())
 727     {
 728         dc.DrawBitmap( my_horse_png, 30, 150 );
 729         wxRect rect(0,0,100,100);
 730         wxBitmap sub( my_horse_png.GetSubBitmap(rect) );
 731         dc.DrawText( _T("GetSubBitmap()"), 280, 175 );
 732         dc.DrawBitmap( sub, 280, 195 );
 733     }
 734
 735     dc.DrawText( _T("JPEG handler"), 30, 365 );
 736     if (my_horse_jpeg.Ok())
 737         dc.DrawBitmap( my_horse_jpeg, 30, 380 );
 738
 739     dc.DrawText( _T("Green rotated to red"), 280, 365 );
 740     if (colorized_horse_jpeg.Ok())
 741         dc.DrawBitmap( colorized_horse_jpeg, 280, 380 );
 742
 743     dc.DrawText( _T("CMYK JPEG image"), 530, 365 );
 744     if (my_cmyk_jpeg.Ok())
 745         dc.DrawBitmap( my_cmyk_jpeg, 530, 380 );
 746
 747     dc.DrawText( _T("GIF handler"), 30, 595 );
 748     if (my_horse_gif.Ok())
 749         dc.DrawBitmap( my_horse_gif, 30, 610 );
 750
 751     dc.DrawText( _T("PCX handler"), 30, 825 );
 752     if (my_horse_pcx.Ok())
 753         dc.DrawBitmap( my_horse_pcx, 30, 840 );
 754
 755     dc.DrawText( _T("BMP handler"), 30, 1055 );
 756     if (my_horse_bmp.Ok())
 757         dc.DrawBitmap( my_horse_bmp, 30, 1070 );
 758
 759     dc.DrawText( _T("BMP read from memory"), 280, 1055 );
 760     if (my_horse_bmp2.Ok())
 761         dc.DrawBitmap( my_horse_bmp2, 280, 1070 );
 762
 763     dc.DrawText( _T("PNM handler"), 30, 1285 );
 764     if (my_horse_pnm.Ok())
 765         dc.DrawBitmap( my_horse_pnm, 30, 1300 );
 766
 767     dc.DrawText( _T("PNM handler (ascii grey)"), 280, 1285 );
 768     if (my_horse_asciigrey_pnm.Ok())
 769         dc.DrawBitmap( my_horse_asciigrey_pnm, 280, 1300 );
 770
 771     dc.DrawText( _T("PNM handler (raw grey)"), 530, 1285 );
 772     if (my_horse_rawgrey_pnm.Ok())
 773         dc.DrawBitmap( my_horse_rawgrey_pnm, 530, 1300 );
 774
 775     dc.DrawText( _T("TIFF handler"), 30, 1515 );
 776     if (my_horse_tiff.Ok())
 777         dc.DrawBitmap( my_horse_tiff, 30, 1530 );
 778
 779     dc.DrawText( _T("XPM handler"), 30, 1745 );
 780     if (my_horse_xpm.Ok())
 781         dc.DrawBitmap( my_horse_xpm, 30, 1760 );
 782
 783     // toucans
 784     {
 785         int x = 750, y = 10, yy = 170;
 786
 787         dc.DrawText(wxT("Original toucan"), x+50, y);
 788         dc.DrawBitmap(my_toucan, x, y+15, true);
 789         y += yy;
 790         dc.DrawText(wxT("Flipped horizontally"), x+50, y);
 791         dc.DrawBitmap(my_toucan_flipped_horiz, x, y+15, true);
 792         y += yy;
 793         dc.DrawText(wxT("Flipped vertically"), x+50, y);
 794         dc.DrawBitmap(my_toucan_flipped_vert, x, y+15, true);
 795         y += yy;
 796         dc.DrawText(wxT("Flipped both h&v"), x+50, y);
 797         dc.DrawBitmap(my_toucan_flipped_both, x, y+15, true);
 798
 799         y += yy;
 800         dc.DrawText(wxT("In greyscale"), x+50, y);
 801         dc.DrawBitmap(my_toucan_grey, x, y+15, true);
 802
 803         y += yy;
 804         dc.DrawText(wxT("Toucan's head"), x+50, y);
 805         dc.DrawBitmap(my_toucan_head, x, y+15, true);
 806     }
 807
 808     if (my_smile_xbm.Ok())
 809     {
 810         dc.DrawText( _T("XBM bitmap"), 30, 1975 );
 811         dc.DrawText( _T("(green on red)"), 30, 1990 );
 812         dc.SetTextForeground( _T("GREEN") );
 813         dc.SetTextBackground( _T("RED") );
 814         dc.DrawBitmap( my_smile_xbm, 30, 2010 );
 815
 816         dc.SetTextForeground( *wxBLACK );
 817         dc.DrawText( _T("After wxImage conversion"), 150, 1975 );
 818         dc.DrawText( _T("(red on white)"), 150, 1990 );
 819         dc.SetTextForeground( wxT("RED") );
 820         wxImage i = my_smile_xbm.ConvertToImage();
 821         i.SetMaskColour( 255, 255, 255 );
 822         i.Replace( 0, 0, 0,
 823                wxRED_PEN->GetColour().Red(),
 824                wxRED_PEN->GetColour().Green(),
 825                wxRED_PEN->GetColour().Blue() );
 826         dc.DrawBitmap( wxBitmap(i), 150, 2010, true );
 827         dc.SetTextForeground( *wxBLACK );
 828     }
 829
 830
 831     wxBitmap mono( 60,50,1 );
 832     wxMemoryDC memdc;
 833     memdc.SelectObject( mono );
 834     memdc.SetPen( *wxBLACK_PEN );
 835     memdc.SetBrush( *wxWHITE_BRUSH );
 836     memdc.DrawRectangle( 0,0,60,50 );
 837     memdc.SetTextForeground( *wxBLACK );
 838 #ifndef __WXGTK20__
 839     // I cannot convince GTK2 to draw into mono bitmaps
 840     memdc.DrawText( _T("Hi!"), 5, 5 );
 841 #endif
 842     memdc.SetBrush( *wxBLACK_BRUSH );
 843     memdc.DrawRectangle( 33,5,20,20 );
 844     memdc.SetPen( *wxRED_PEN );
 845     memdc.DrawLine( 5, 42, 50, 42 );
 846     memdc.SelectObject( wxNullBitmap );
 847
 848     if (mono.Ok())
 849     {
 850         dc.DrawText( _T("Mono bitmap"), 30, 2095 );
 851         dc.DrawText( _T("(red on green)"), 30, 2110 );
 852         dc.SetTextForeground( wxT("RED") );
 853         dc.SetTextBackground( wxT("GREEN") );
 854         dc.DrawBitmap( mono, 30, 2130 );
 855
 856         dc.SetTextForeground( *wxBLACK );
 857         dc.DrawText( _T("After wxImage conversion"), 150, 2095 );
 858         dc.DrawText( _T("(red on white)"), 150, 2110 );
 859         dc.SetTextForeground( wxT("RED") );
 860         wxImage i = mono.ConvertToImage();
 861         i.SetMaskColour( 255,255,255 );
 862         i.Replace( 0,0,0,
 863                wxRED_PEN->GetColour().Red(),
 864                wxRED_PEN->GetColour().Green(),
 865                wxRED_PEN->GetColour().Blue() );
 866         dc.DrawBitmap( wxBitmap(i), 150, 2130, true );
 867         dc.SetTextForeground( *wxBLACK );
 868     }
 869
 870     // For testing transparency
 871     dc.SetBrush( *wxRED_BRUSH );
 872     dc.DrawRectangle( 20, 2220, 560, 68 );
 873
 874     dc.DrawText(_T("XPM bitmap"), 30, 2230 );
 875     if ( m_bmpSmileXpm.Ok() )
 876         dc.DrawBitmap(m_bmpSmileXpm, 30, 2250, true);
 877
 878     dc.DrawText(_T("XPM icon"), 110, 2230 );
 879     if ( m_iconSmileXpm.Ok() )
 880         dc.DrawIcon(m_iconSmileXpm, 110, 2250);
 881
 882     // testing icon -> bitmap conversion
 883     wxBitmap to_blit( m_iconSmileXpm );
 884     if (to_blit.Ok())
 885     {
 886         dc.DrawText( _T("SubBitmap"), 170, 2230 );
 887         wxBitmap sub = to_blit.GetSubBitmap( wxRect(0,0,15,15) );
 888         if (sub.Ok())
 889             dc.DrawBitmap( sub, 170, 2250, true );
 890
 891         dc.DrawText( _T("Enlarged"), 250, 2230 );
 892         dc.SetUserScale( 1.5, 1.5 );
 893         dc.DrawBitmap( to_blit, (int)(250/1.5), (int)(2250/1.5), true );
 894         dc.SetUserScale( 2, 2 );
 895         dc.DrawBitmap( to_blit, (int)(300/2), (int)(2250/2), true );
 896         dc.SetUserScale( 1.0, 1.0 );
 897
 898         dc.DrawText( _T("Blit"), 400, 2230);
 899         wxMemoryDC blit_dc;
 900         blit_dc.SelectObject( to_blit );
 901         dc.Blit( 400, 2250, to_blit.GetWidth(), to_blit.GetHeight(), &blit_dc, 0, 0, wxCOPY, true );
 902         dc.SetUserScale( 1.5, 1.5 );
 903         dc.Blit( (int)(450/1.5), (int)(2250/1.5), to_blit.GetWidth(), to_blit.GetHeight(), &blit_dc, 0, 0, wxCOPY, true );
 904         dc.SetUserScale( 2, 2 );
 905         dc.Blit( (int)(500/2), (int)(2250/2), to_blit.GetWidth(), to_blit.GetHeight(), &blit_dc, 0, 0, wxCOPY, true );
 906         dc.SetUserScale( 1.0, 1.0 );
 907     }
 908
 909     dc.DrawText( _T("ICO handler (1st image)"), 30, 2290 );
 910     if (my_horse_ico32.Ok())
 911         dc.DrawBitmap( my_horse_ico32, 30, 2330, true );
 912
 913     dc.DrawText( _T("ICO handler (2nd image)"), 230, 2290 );
 914     if (my_horse_ico16.Ok())
 915         dc.DrawBitmap( my_horse_ico16, 230, 2330, true );
 916
 917     dc.DrawText( _T("ICO handler (best image)"), 430, 2290 );
 918     if (my_horse_ico.Ok())
 919         dc.DrawBitmap( my_horse_ico, 430, 2330, true );
 920
 921     dc.DrawText( _T("CUR handler"), 30, 2390 );
 922     if (my_horse_cur.Ok())
 923     {
 924         dc.DrawBitmap( my_horse_cur, 30, 2420, true );
 925         dc.SetPen (*wxRED_PEN);
 926         dc.DrawLine (xH-10,yH,xH+10,yH);
 927         dc.DrawLine (xH,yH-10,xH,yH+10);
 928     }
 929
 930     dc.DrawText( _T("ANI handler"), 230, 2390 );
 931     for ( int i=0; i < m_ani_images; i++ )
 932     {
 933         if (my_horse_ani[i].Ok())
 934         {
 935             dc.DrawBitmap( my_horse_ani[i], 230 + i * 2 * my_horse_ani[i].GetWidth() , 2420, true );
 936         }
 937     }
 938 }
 939
 940 void MyCanvas::CreateAntiAliasedBitmap()
 941 {
 942   wxBitmap bitmap( 300, 300 );
 943
 944   wxMemoryDC dc;
 945
 946   dc.SelectObject( bitmap );
 947
 948   dc.Clear();
 949
 950   dc.SetFont( wxFont( 24, wxDECORATIVE, wxNORMAL, wxNORMAL) );
 951   dc.SetTextForeground( wxT("RED") );
 952   dc.DrawText( _T("This is anti-aliased Text."), 20, 5 );
 953   dc.DrawText( _T("And a Rectangle."), 20, 45 );
 954
 955   dc.SetBrush( *wxRED_BRUSH );
 956   dc.SetPen( *wxTRANSPARENT_PEN );
 957   dc.DrawRoundedRectangle( 20, 85, 200, 180, 20 );
 958
 959   wxImage original= bitmap.ConvertToImage();
 960   wxImage anti( 150, 150 );
 961
 962   /* This is quite slow, but safe. Use wxImage::GetData() for speed instead. */
 963
 964   for (int y = 1; y < 149; y++)
 965     for (int x = 1; x < 149; x++)
 966     {
 967        int red = original.GetRed( x*2, y*2 ) +
 968                  original.GetRed( x*2-1, y*2 ) +
 969                  original.GetRed( x*2, y*2+1 ) +
 970                  original.GetRed( x*2+1, y*2+1 );
 971        red = red/4;
 972
 973        int green = original.GetGreen( x*2, y*2 ) +
 974                    original.GetGreen( x*2-1, y*2 ) +
 975                    original.GetGreen( x*2, y*2+1 ) +
 976                    original.GetGreen( x*2+1, y*2+1 );
 977        green = green/4;
 978
 979        int blue = original.GetBlue( x*2, y*2 ) +
 980                   original.GetBlue( x*2-1, y*2 ) +
 981                   original.GetBlue( x*2, y*2+1 ) +
 982                   original.GetBlue( x*2+1, y*2+1 );
 983        blue = blue/4;
 984        anti.SetRGB( x, y, (unsigned char)red, (unsigned char)green, (unsigned char)blue );
 985     }
 986   my_anti = wxBitmap(anti);
 987 }
 988
 989 // MyFrame
 990
 991 enum
 992 {
 993     ID_QUIT  = wxID_EXIT,
 994     ID_ABOUT = wxID_ABOUT,
 995     ID_NEW = 100,
 996     ID_SHOWRAW = 101
 997 };
 998
 999 IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )
1000
1001 BEGIN_EVENT_TABLE(MyFrame,wxFrame)
1002   EVT_MENU    (ID_ABOUT, MyFrame::OnAbout)
1003   EVT_MENU    (ID_QUIT,  MyFrame::OnQuit)
1004   EVT_MENU    (ID_NEW,  MyFrame::OnNewFrame)
1005 #ifdef wxHAVE_RAW_BITMAP
1006   EVT_MENU    (ID_SHOWRAW,  MyFrame::OnTestRawBitmap)
1007 #endif
1008
1009 #if wxUSE_CLIPBOARD
1010     EVT_MENU(wxID_COPY, MyFrame::OnCopy)
1011     EVT_MENU(wxID_PASTE, MyFrame::OnPaste)
1012 #endif // wxUSE_CLIPBOARD
1013 END_EVENT_TABLE()
1014
1015 MyFrame::MyFrame()
1016        : wxFrame( (wxFrame *)NULL, wxID_ANY, _T("wxImage sample"),
1017                   wxPoint(20, 20), wxSize(950, 700) )
1018 {
1019   wxMenuBar *menu_bar = new wxMenuBar();
1020
1021   wxMenu *menuImage = new wxMenu;
1022   menuImage->Append( ID_NEW, _T("&Show any image...\tCtrl-O"));
1023
1024 #ifdef wxHAVE_RAW_BITMAP
1025   menuImage->Append( ID_SHOWRAW, _T("Test &raw bitmap...\tCtrl-R"));
1026 #endif
1027   menuImage->AppendSeparator();
1028   menuImage->Append( ID_ABOUT, _T("&About..."));
1029   menuImage->AppendSeparator();
1030   menuImage->Append( ID_QUIT, _T("E&xit\tCtrl-Q"));
1031   menu_bar->Append(menuImage, _T("&Image"));
1032
1033 #if wxUSE_CLIPBOARD
1034   wxMenu *menuClipboard = new wxMenu;
1035   menuClipboard->Append(wxID_COPY, _T("&Copy test image\tCtrl-C"));
1036   menuClipboard->Append(wxID_PASTE, _T("&Paste image\tCtrl-V"));
1037   menu_bar->Append(menuClipboard, _T("&Clipboard"));
1038 #endif // wxUSE_CLIPBOARD
1039
1040   SetMenuBar( menu_bar );
1041
1042 #if wxUSE_STATUSBAR
1043   CreateStatusBar(2);
1044   int widths[] = { -1, 100 };
1045   SetStatusWidths( 2, widths );
1046 #endif // wxUSE_STATUSBAR
1047
1048   m_canvas = new MyCanvas( this, wxID_ANY, wxPoint(0,0), wxSize(10,10) );
1049
1050   // 500 width * 2750 height
1051   m_canvas->SetScrollbars( 10, 10, 50, 275 );
1052 }
1053
1054 void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
1055 {
1056   Close( true );
1057 }
1058
1059 void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) )
1060 {
1061   (void)wxMessageBox( _T("wxImage demo\n")
1062                       _T("Robert Roebling (c) 1998,2000"),
1063                       _T("About wxImage Demo"), wxICON_INFORMATION | wxOK );
1064 }
1065
1066 void MyFrame::OnNewFrame( wxCommandEvent &WXUNUSED(event) )
1067 {
1068 #if wxUSE_FILEDLG
1069     wxString filename = wxFileSelector(_T("Select image file"));
1070     if ( !filename )
1071         return;
1072
1073     wxImage image;
1074     if ( !image.LoadFile(filename) )
1075     {
1076         wxLogError(_T("Couldn't load image from '%s'."), filename.c_str());
1077
1078         return;
1079     }
1080
1081     (new MyImageFrame(this, wxBitmap(image)))->Show();
1082 #endif // wxUSE_FILEDLG
1083 }
1084
1085 #ifdef wxHAVE_RAW_BITMAP
1086
1087 void MyFrame::OnTestRawBitmap( wxCommandEvent &WXUNUSED(event) )
1088 {
1089     (new MyRawBitmapFrame(this))->Show();
1090 }
1091
1092 #endif // wxHAVE_RAW_BITMAP
1093
1094 #if wxUSE_CLIPBOARD
1095
1096 void MyFrame::OnCopy(wxCommandEvent& WXUNUSED(event))
1097 {
1098     wxBitmapDataObject *dobjBmp = new wxBitmapDataObject;
1099     dobjBmp->SetBitmap(m_canvas->my_horse_png);
1100
1101     wxTheClipboard->Open();
1102
1103     if ( !wxTheClipboard->SetData(dobjBmp) )
1104     {
1105         wxLogError(_T("Failed to copy bitmap to clipboard"));
1106     }
1107
1108     wxTheClipboard->Close();
1109 }
1110
1111 void MyFrame::OnPaste(wxCommandEvent& WXUNUSED(event))
1112 {
1113     wxBitmapDataObject dobjBmp;
1114
1115     wxTheClipboard->Open();
1116     if ( !wxTheClipboard->GetData(dobjBmp) )
1117     {
1118         wxLogMessage(_T("No bitmap data in the clipboard"));
1119     }
1120     else
1121     {
1122         (new MyImageFrame(this, dobjBmp.GetBitmap()))->Show();
1123     }
1124     wxTheClipboard->Close();
1125 }
1126
1127 #endif // wxUSE_CLIPBOARD
1128
1129 //-----------------------------------------------------------------------------
1130 // MyApp
1131 //-----------------------------------------------------------------------------
1132
1133 bool MyApp::OnInit()
1134 {
1135 #if wxUSE_LIBPNG
1136   wxImage::AddHandler( new wxPNGHandler );
1137 #endif
1138
1139 #if wxUSE_LIBJPEG
1140   wxImage::AddHandler( new wxJPEGHandler );
1141 #endif
1142
1143 #if wxUSE_LIBTIFF
1144   wxImage::AddHandler( new wxTIFFHandler );
1145 #endif
1146
1147 #if wxUSE_GIF
1148   wxImage::AddHandler( new wxGIFHandler );
1149 #endif
1150
1151 #if wxUSE_PCX
1152   wxImage::AddHandler( new wxPCXHandler );
1153 #endif
1154
1155 #if wxUSE_PNM
1156   wxImage::AddHandler( new wxPNMHandler );
1157 #endif
1158
1159 #if wxUSE_XPM
1160   wxImage::AddHandler( new wxXPMHandler );
1161 #endif
1162
1163 #if wxUSE_ICO_CUR
1164   wxImage::AddHandler( new wxICOHandler );
1165   wxImage::AddHandler( new wxCURHandler );
1166   wxImage::AddHandler( new wxANIHandler );
1167 #endif
1168
1169   wxFrame *frame = new MyFrame();
1170   frame->Show( true );
1171
1172   return true;
1173 }