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() {}
  60     MyCanvas( wxWindow *parent, wxWindowID, const wxPoint &pos, const wxSize &size );
  61     ~MyCanvas();
  62     void OnPaint( wxPaintEvent &event );
  63     void CreateAntiAliasedBitmap();
  64
  65     wxBitmap  *my_horse_png;
  66     wxBitmap  *my_horse_jpeg;
  67     wxBitmap  *my_horse_gif;
  68     wxBitmap  *my_horse_bmp;
  69     wxBitmap  *my_horse_bmp2;
  70     wxBitmap  *my_horse_pcx;
  71     wxBitmap  *my_horse_pnm;
  72     wxBitmap  *my_horse_tiff;
  73     wxBitmap  *my_horse_xpm;
  74     wxBitmap  *my_horse_ico32;
  75     wxBitmap  *my_horse_ico16;
  76     wxBitmap  *my_horse_ico;
  77     wxBitmap  *my_horse_cur;
  78     wxBitmap  *my_horse_ani;
  79
  80     wxBitmap  *my_smile_xbm;
  81     wxBitmap  *my_square;
  82     wxBitmap  *my_anti;
  83
  84     wxBitmap  *my_horse_asciigrey_pnm;
  85     wxBitmap  *my_horse_rawgrey_pnm;
  86
  87     int xH, yH ;
  88     int m_ani_images ;
  89
  90 protected:
  91     wxBitmap m_bmpSmileXpm;
  92     wxIcon   m_iconSmileXpm;
  93
  94 private:
  95     DECLARE_DYNAMIC_CLASS(MyCanvas)
  96     DECLARE_EVENT_TABLE()
  97 };
  98
  99
 100 // MyFrame
 101
 102
 103 class MyFrame: public wxFrame
 104 {
 105 public:
 106     MyFrame();
 107
 108     void OnAbout( wxCommandEvent &event );
 109     void OnNewFrame( wxCommandEvent &event );
 110 #ifdef wxHAVE_RAW_BITMAP
 111     void OnTestRawBitmap( wxCommandEvent &event );
 112 #endif // wxHAVE_RAW_BITMAP
 113     void OnQuit( wxCommandEvent &event );
 114
 115 #if wxUSE_CLIPBOARD
 116     void OnCopy(wxCommandEvent& event);
 117     void OnPaste(wxCommandEvent& event);
 118 #endif // wxUSE_CLIPBOARD
 119
 120     MyCanvas         *m_canvas;
 121
 122 private:
 123     DECLARE_DYNAMIC_CLASS(MyFrame)
 124     DECLARE_EVENT_TABLE()
 125 };
 126
 127 class MyImageFrame : public wxFrame
 128 {
 129 public:
 130     MyImageFrame(wxFrame *parent, const wxBitmap& bitmap)
 131         : wxFrame(parent, wxID_ANY, _T("Double click to save"),
 132                   wxDefaultPosition, wxDefaultSize,
 133                   wxCAPTION | wxSYSTEM_MENU | wxCLOSE_BOX),
 134                   m_bitmap(bitmap)
 135     {
 136         SetClientSize(bitmap.GetWidth(), bitmap.GetHeight());
 137     }
 138
 139     void OnEraseBackground(wxEraseEvent& WXUNUSED(event))
 140     {
 141         // do nothing here to be able to see how transparent images are shown
 142     }
 143
 144     void OnPaint(wxPaintEvent& WXUNUSED(event))
 145     {
 146         wxPaintDC dc( this );
 147         dc.DrawBitmap( m_bitmap, 0, 0, true /* use mask */ );
 148     }
 149
 150     void OnSave(wxMouseEvent& WXUNUSED(event))
 151     {
 152         wxImage image = m_bitmap.ConvertToImage();
 153
 154         wxString savefilename = wxFileSelector( wxT("Save Image"),
 155                                                 wxT(""),
 156                                                 wxT(""),
 157                                                 (const wxChar *)NULL,
 158                                             wxT("BMP files (*.bmp)|*.bmp|")
 159                                             wxT("PNG files (*.png)|*.png|")
 160                                             wxT("JPEG files (*.jpg)|*.jpg|")
 161                                             wxT("GIF files (*.gif)|*.gif|")
 162                                             wxT("TIFF files (*.tif)|*.tif|")
 163                                             wxT("PCX files (*.pcx)|*.pcx|")
 164                                             wxT("ICO files (*.ico)|*.ico|")
 165                                             wxT("CUR files (*.cur)|*.cur"),
 166                                                 wxSAVE,
 167                                                 this);
 168
 169         if ( savefilename.empty() )
 170             return;
 171
 172         wxString extension;
 173         wxFileName::SplitPath(savefilename, NULL, NULL, &extension);
 174
 175         bool saved = false;
 176         if ( extension == _T("bpp") )
 177         {
 178             static const int bppvalues[] =
 179             {
 180                 wxBMP_1BPP,
 181                 wxBMP_1BPP_BW,
 182                 wxBMP_4BPP,
 183                 wxBMP_8BPP,
 184                 wxBMP_8BPP_GREY,
 185                 wxBMP_8BPP_RED,
 186                 wxBMP_8BPP_PALETTE,
 187                 wxBMP_24BPP
 188             };
 189
 190             const wxString bppchoices[] =
 191             {
 192                 _T("1 bpp color"),
 193                 _T("1 bpp B&W"),
 194                 _T("4 bpp color"),
 195                 _T("8 bpp color"),
 196                 _T("8 bpp greyscale"),
 197                 _T("8 bpp red"),
 198                 _T("8 bpp own palette"),
 199                 _T("24 bpp")
 200             };
 201
 202             int bppselection = wxGetSingleChoiceIndex(_T("Set BMP BPP"),
 203                                                       _T("Image sample: save file"),
 204                                                       WXSIZEOF(bppchoices),
 205                                                       bppchoices,
 206                                                       this);
 207             if ( bppselection != -1 )
 208             {
 209                 int format = bppvalues[bppselection];
 210                 image.SetOption(wxIMAGE_OPTION_BMP_FORMAT, format);
 211
 212                 if ( format == wxBMP_8BPP_PALETTE )
 213                 {
 214                     unsigned char *cmap = new unsigned char [256];
 215                     for ( int i = 0; i < 256; i++ )
 216                         cmap[i] = (unsigned char)i;
 217                     image.SetPalette(wxPalette(256, cmap, cmap, cmap));
 218
 219                     delete cmap;
 220                 }
 221             }
 222         }
 223         else if ( extension == _T("png") )
 224         {
 225             static const int pngvalues[] =
 226             {
 227                 wxPNG_TYPE_COLOUR,
 228                 wxPNG_TYPE_COLOUR,
 229                 wxPNG_TYPE_GREY,
 230                 wxPNG_TYPE_GREY,
 231                 wxPNG_TYPE_GREY_RED,
 232                 wxPNG_TYPE_GREY_RED,
 233             };
 234
 235             const wxString pngchoices[] =
 236             {
 237                 _T("Colour 8bpp"),
 238                 _T("Colour 16bpp"),
 239                 _T("Grey 8bpp"),
 240                 _T("Grey 16bpp"),
 241                 _T("Grey red 8bpp"),
 242                 _T("Grey red 16bpp"),
 243             };
 244
 245             int sel = wxGetSingleChoiceIndex(_T("Set PNG format"),
 246                                              _T("Image sample: save file"),
 247                                              WXSIZEOF(pngchoices),
 248                                              pngchoices,
 249                                              this);
 250             if ( sel != -1 )
 251             {
 252                 image.SetOption(wxIMAGE_OPTION_PNG_FORMAT, pngvalues[sel]);
 253                 image.SetOption(wxIMAGE_OPTION_PNG_BITDEPTH, sel % 2 ? 16 : 8);
 254             }
 255         }
 256         else if ( extension == _T("cur") )
 257         {
 258             image.Rescale(32,32);
 259             image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_X, 0);
 260             image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y, 0);
 261             // This shows how you can save an image with explicitly
 262             // specified image format:
 263             saved = image.SaveFile(savefilename, wxBITMAP_TYPE_CUR);
 264         }
 265
 266         if ( !saved )
 267         {
 268             // This one guesses image format from filename extension
 269             // (it may fail if the extension is not recognized):
 270             image.SaveFile(savefilename);
 271         }
 272     }
 273
 274 private:
 275     wxBitmap m_bitmap;
 276
 277     DECLARE_EVENT_TABLE()
 278 };
 279
 280 #ifdef wxHAVE_RAW_BITMAP
 281
 282 #include "wx/rawbmp.h"
 283
 284 class MyRawBitmapFrame : public wxFrame
 285 {
 286 public:
 287     enum
 288     {
 289         BORDER = 15,
 290         SIZE = 150,
 291         REAL_SIZE = SIZE - 2*BORDER
 292     };
 293
 294     MyRawBitmapFrame(wxFrame *parent)
 295         : wxFrame(parent, wxID_ANY, _T("Raw bitmaps (how exciting)")),
 296           m_bitmap(SIZE, SIZE, 32)
 297     {
 298         SetClientSize(SIZE, SIZE);
 299
 300         // another possibility: wxNativePixelData (don't forget to remove code
 301         // setting alpha in the loop below then)
 302         typedef wxAlphaPixelData Data;
 303
 304         Data data(m_bitmap, wxPoint(BORDER, BORDER), wxSize(REAL_SIZE, REAL_SIZE));
 305         if ( !data )
 306         {
 307             wxLogError(_T("Failed to gain raw access to bitmap data"));
 308             return;
 309         }
 310
 311         data.UseAlpha();
 312
 313         Data::Iterator p(data);
 314
 315         for ( int y = 0; y < REAL_SIZE; ++y )
 316         {
 317             Data::Iterator rowStart = p;
 318
 319             int r = y < REAL_SIZE/3 ? 255 : 0,
 320                 g = (REAL_SIZE/3 <= y) && (y < 2*(REAL_SIZE/3)) ? 255 : 0,
 321                 b = 2*(REAL_SIZE/3) <= y ? 255 : 0;
 322
 323             for ( int x = 0; x < REAL_SIZE; ++x )
 324             {
 325                 // note that RGB must be premultiplied by alpha
 326                 unsigned a = (Data::Iterator::ChannelType)((x*255.)/REAL_SIZE);
 327                 p.Red() = r * a / 256;
 328                 p.Green() = g * a / 256;
 329                 p.Blue() = b * a / 256;
 330                 p.Alpha() = a;
 331
 332                 ++p; // same as p.OffsetX(1)
 333             }
 334
 335             p = rowStart;
 336             p.OffsetY(data, 1);
 337         }
 338     }
 339
 340     void OnPaint(wxPaintEvent& WXUNUSED(event))
 341     {
 342         wxPaintDC dc( this );
 343         dc.DrawText(_T("This is alpha and raw bitmap test"), 0, BORDER);
 344         dc.DrawText(_T("This is alpha and raw bitmap test"), 0, SIZE/2 - BORDER);
 345         dc.DrawText(_T("This is alpha and raw bitmap test"), 0, SIZE - 2*BORDER);
 346         dc.DrawBitmap( m_bitmap, 0, 0, true /* use mask */ );
 347     }
 348
 349 private:
 350     wxBitmap m_bitmap;
 351
 352     DECLARE_EVENT_TABLE()
 353 };
 354
 355 #endif // wxHAVE_RAW_BITMAP
 356
 357 // MyApp
 358
 359 class MyApp: public wxApp
 360 {
 361 public:
 362     virtual bool OnInit();
 363 };
 364
 365 // main program
 366
 367 IMPLEMENT_APP(MyApp)
 368
 369 // MyCanvas
 370
 371 IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxScrolledWindow)
 372
 373 BEGIN_EVENT_TABLE(MyImageFrame, wxFrame)
 374     EVT_ERASE_BACKGROUND(MyImageFrame::OnEraseBackground)
 375     EVT_PAINT(MyImageFrame::OnPaint)
 376     EVT_LEFT_DCLICK(MyImageFrame::OnSave)
 377 END_EVENT_TABLE()
 378
 379 #ifdef wxHAVE_RAW_BITMAP
 380
 381 BEGIN_EVENT_TABLE(MyRawBitmapFrame, wxFrame)
 382     EVT_PAINT(MyRawBitmapFrame::OnPaint)
 383 END_EVENT_TABLE()
 384
 385 #endif // wxHAVE_RAW_BITMAP
 386
 387 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
 388   EVT_PAINT(MyCanvas::OnPaint)
 389 END_EVENT_TABLE()
 390
 391 MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
 392                     const wxPoint &pos, const wxSize &size )
 393         : wxScrolledWindow( parent, id, pos, size, wxSUNKEN_BORDER )
 394           , m_bmpSmileXpm((const char **) smile_xpm)
 395           , m_iconSmileXpm((const char **) smile_xpm)
 396 {
 397     my_horse_png = (wxBitmap*) NULL;
 398     my_horse_jpeg = (wxBitmap*) NULL;
 399     my_horse_gif = (wxBitmap*) NULL;
 400     my_horse_bmp = (wxBitmap*) NULL;
 401     my_horse_bmp2 = (wxBitmap*) NULL;
 402     my_horse_pcx = (wxBitmap*) NULL;
 403     my_horse_pnm = (wxBitmap*) NULL;
 404     my_horse_tiff = (wxBitmap*) NULL;
 405     my_horse_xpm = (wxBitmap*) NULL;
 406     my_horse_ico32 = (wxBitmap*) NULL;
 407     my_horse_ico16 = (wxBitmap*) NULL;
 408     my_horse_ico = (wxBitmap*) NULL;
 409     my_horse_cur = (wxBitmap*) NULL;
 410     my_horse_ani = (wxBitmap*) NULL;
 411
 412     my_smile_xbm = (wxBitmap*) NULL;
 413     my_square = (wxBitmap*) NULL;
 414     my_anti = (wxBitmap*) NULL;
 415
 416     my_horse_asciigrey_pnm = (wxBitmap*) NULL;
 417     my_horse_rawgrey_pnm = (wxBitmap*) NULL;
 418
 419     m_ani_images = 0 ;
 420
 421     SetBackgroundColour(* wxWHITE);
 422
 423     wxBitmap bitmap( 100, 100 );
 424
 425     wxMemoryDC dc;
 426     dc.SelectObject( bitmap );
 427     dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) );
 428     dc.SetPen( *wxBLACK_PEN );
 429     dc.DrawRectangle( 0, 0, 100, 100 );
 430     dc.SetBrush( *wxWHITE_BRUSH );
 431     dc.DrawRectangle( 20, 20, 60, 60 );
 432     dc.SelectObject( wxNullBitmap );
 433
 434     // try to find the directory with our images
 435     wxString dir;
 436     if ( wxFile::Exists(wxT("./horse.png")) )
 437         dir = wxT("./");
 438     else if ( wxFile::Exists(wxT("../horse.png")) )
 439         dir = wxT("../");
 440     else
 441         wxLogWarning(wxT("Can't find image files in either '.' or '..'!"));
 442
 443     wxImage image = bitmap.ConvertToImage();
 444
 445 #if wxUSE_LIBPNG
 446     if ( !image.SaveFile( dir + _T("test.png"), wxBITMAP_TYPE_PNG ))
 447         wxLogError(wxT("Can't save file"));
 448
 449     image.Destroy();
 450
 451     if ( image.LoadFile( dir + _T("test.png") ) )
 452         my_square = new wxBitmap( image );
 453
 454     image.Destroy();
 455
 456     if ( !image.LoadFile( dir + _T("horse.png")) )
 457         wxLogError(wxT("Can't load PNG image"));
 458     else
 459         my_horse_png = new wxBitmap( image );
 460 #endif // wxUSE_LIBPNG
 461
 462 #if wxUSE_LIBJPEG
 463     image.Destroy();
 464
 465     if ( !image.LoadFile( dir + _T("horse.jpg")) )
 466         wxLogError(wxT("Can't load JPG image"));
 467     else
 468         my_horse_jpeg = new wxBitmap( image );
 469 #endif // wxUSE_LIBJPEG
 470
 471 #if wxUSE_GIF
 472     image.Destroy();
 473
 474     if ( !image.LoadFile( dir + _T("horse.gif" )) )
 475         wxLogError(wxT("Can't load GIF image"));
 476     else
 477         my_horse_gif = new wxBitmap( image );
 478 #endif
 479
 480 #if wxUSE_PCX
 481     image.Destroy();
 482
 483     if ( !image.LoadFile( dir + _T("horse.pcx"), wxBITMAP_TYPE_PCX ) )
 484         wxLogError(wxT("Can't load PCX image"));
 485     else
 486         my_horse_pcx = new wxBitmap( image );
 487 #endif
 488
 489     image.Destroy();
 490
 491     if ( !image.LoadFile( dir + _T("horse.bmp"), wxBITMAP_TYPE_BMP ) )
 492         wxLogError(wxT("Can't load BMP image"));
 493     else
 494         my_horse_bmp = new wxBitmap( image );
 495
 496 #if wxUSE_XPM
 497     image.Destroy();
 498
 499     if ( !image.LoadFile( dir + _T("horse.xpm"), wxBITMAP_TYPE_XPM ) )
 500         wxLogError(wxT("Can't load XPM image"));
 501     else
 502         my_horse_xpm = new wxBitmap( image );
 503
 504     if ( !image.SaveFile( dir + _T("test.xpm"), wxBITMAP_TYPE_XPM ))
 505         wxLogError(wxT("Can't save file"));
 506 #endif
 507
 508 #if wxUSE_PNM
 509     image.Destroy();
 510
 511     if ( !image.LoadFile( dir + _T("horse.pnm"), wxBITMAP_TYPE_PNM ) )
 512         wxLogError(wxT("Can't load PNM image"));
 513     else
 514         my_horse_pnm = new wxBitmap( image );
 515
 516     image.Destroy();
 517
 518     if ( !image.LoadFile( dir + _T("horse_ag.pnm"), wxBITMAP_TYPE_PNM ) )
 519         wxLogError(wxT("Can't load PNM image"));
 520     else
 521         my_horse_asciigrey_pnm = new wxBitmap( image );
 522
 523     image.Destroy();
 524
 525     if ( !image.LoadFile( dir + _T("horse_rg.pnm"), wxBITMAP_TYPE_PNM ) )
 526         wxLogError(wxT("Can't load PNM image"));
 527     else
 528         my_horse_rawgrey_pnm = new wxBitmap( image );
 529 #endif
 530
 531 #if wxUSE_LIBTIFF
 532     image.Destroy();
 533
 534     if ( !image.LoadFile( dir + _T("horse.tif"), wxBITMAP_TYPE_TIF ) )
 535         wxLogError(wxT("Can't load TIFF image"));
 536     else
 537         my_horse_tiff = new wxBitmap( image );
 538 #endif
 539
 540     CreateAntiAliasedBitmap();
 541
 542     my_smile_xbm = new wxBitmap( (const char*)smile_bits, smile_width,
 543                                  smile_height, 1 );
 544
 545     // demonstrates XPM automatically using the mask when saving
 546     if ( m_bmpSmileXpm.Ok() )
 547         m_bmpSmileXpm.SaveFile(_T("saved.xpm"), wxBITMAP_TYPE_XPM);
 548
 549 #if wxUSE_ICO_CUR
 550     image.Destroy();
 551
 552     if ( !image.LoadFile( dir + _T("horse.ico"), wxBITMAP_TYPE_ICO, 0 ) )
 553         wxLogError(wxT("Can't load first ICO image"));
 554     else
 555         my_horse_ico32 = new wxBitmap( image );
 556
 557     image.Destroy();
 558
 559     if ( !image.LoadFile( dir + _T("horse.ico"), wxBITMAP_TYPE_ICO, 1 ) )
 560         wxLogError(wxT("Can't load second ICO image"));
 561     else
 562         my_horse_ico16 = new wxBitmap( image );
 563
 564     image.Destroy();
 565
 566     if ( !image.LoadFile( dir + _T("horse.ico") ) )
 567         wxLogError(wxT("Can't load best ICO image"));
 568     else
 569         my_horse_ico = new wxBitmap( image );
 570
 571     image.Destroy();
 572
 573     if ( !image.LoadFile( dir + _T("horse.cur"), wxBITMAP_TYPE_CUR ) )
 574         wxLogError(wxT("Can't load best ICO image"));
 575     else
 576     {
 577         my_horse_cur = new wxBitmap( image );
 578         xH = 30 + image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X) ;
 579         yH = 2420 + image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y) ;
 580     }
 581
 582     m_ani_images = wxImage::GetImageCount ( dir + _T("horse3.ani"), wxBITMAP_TYPE_ANI );
 583     if (m_ani_images==0)
 584         wxLogError(wxT("No ANI-format images found"));
 585     else
 586         my_horse_ani = new wxBitmap [m_ani_images];
 587     int i ;
 588     for (i=0; i < m_ani_images; i++)
 589     {
 590         image.Destroy();
 591         if (!image.LoadFile( dir + _T("horse3.ani"), wxBITMAP_TYPE_ANI, i ))
 592         {
 593             wxString tmp = wxT("Can't load image number ");
 594             tmp << i ;
 595             wxLogError(tmp);
 596         }
 597         else
 598             my_horse_ani [i] = wxBitmap( image );
 599     }
 600 #endif // wxUSE_ICO_CUR
 601
 602     image.Destroy();
 603
 604     // test image loading from stream
 605     wxFile file(dir + _T("horse.bmp"));
 606     if ( file.IsOpened() )
 607     {
 608         wxFileOffset len = file.Length();
 609         size_t dataSize = (size_t)len;
 610         void *data = malloc(dataSize);
 611         if ( file.Read(data, dataSize) != len )
 612             wxLogError(_T("Reading bitmap file failed"));
 613         else
 614         {
 615             wxMemoryInputStream mis(data, dataSize);
 616             if ( !image.LoadFile(mis) )
 617                 wxLogError(wxT("Can't load BMP image from stream"));
 618             else
 619                 my_horse_bmp2 = new wxBitmap( image );
 620         }
 621
 622         free(data);
 623     }
 624 }
 625
 626 MyCanvas::~MyCanvas()
 627 {
 628     delete my_horse_pnm;
 629     delete my_horse_png;
 630     delete my_horse_jpeg;
 631     delete my_horse_gif;
 632     delete my_horse_bmp;
 633     delete my_horse_bmp2;
 634     delete my_horse_pcx;
 635     delete my_horse_tiff;
 636     delete my_horse_xpm;
 637     delete my_horse_ico32;
 638     delete my_horse_ico16;
 639     delete my_horse_ico;
 640     delete my_horse_cur;
 641     delete [] my_horse_ani;
 642     delete my_smile_xbm;
 643     delete my_square;
 644     delete my_anti;
 645     delete my_horse_asciigrey_pnm;
 646     delete my_horse_rawgrey_pnm;
 647 }
 648
 649 void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
 650 {
 651     wxPaintDC dc( this );
 652     PrepareDC( dc );
 653
 654     dc.DrawText( _T("Loaded image"), 30, 10 );
 655     if (my_square && my_square->Ok()) dc.DrawBitmap( *my_square, 30, 30 );
 656
 657     dc.DrawText( _T("Drawn directly"), 150, 10 );
 658     dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) );
 659     dc.SetPen( *wxBLACK_PEN );
 660     dc.DrawRectangle( 150, 30, 100, 100 );
 661     dc.SetBrush( *wxWHITE_BRUSH );
 662     dc.DrawRectangle( 170, 50, 60, 60 );
 663
 664     if (my_anti && my_anti->Ok())
 665         dc.DrawBitmap( *my_anti, 280, 30 );
 666
 667     dc.DrawText( _T("PNG handler"), 30, 135 );
 668     if (my_horse_png && my_horse_png->Ok())
 669     {
 670         dc.DrawBitmap( *my_horse_png, 30, 150 );
 671         wxRect rect(0,0,100,100);
 672         wxBitmap sub( my_horse_png->GetSubBitmap(rect) );
 673         dc.DrawText( _T("GetSubBitmap()"), 280, 190 );
 674         dc.DrawBitmap( sub, 280, 210 );
 675     }
 676
 677     dc.DrawText( _T("JPEG handler"), 30, 365 );
 678     if (my_horse_jpeg && my_horse_jpeg->Ok())
 679         dc.DrawBitmap( *my_horse_jpeg, 30, 380 );
 680
 681     dc.DrawText( _T("GIF handler"), 30, 595 );
 682     if (my_horse_gif && my_horse_gif->Ok())
 683         dc.DrawBitmap( *my_horse_gif, 30, 610 );
 684
 685     dc.DrawText( _T("PCX handler"), 30, 825 );
 686     if (my_horse_pcx && my_horse_pcx->Ok())
 687         dc.DrawBitmap( *my_horse_pcx, 30, 840 );
 688
 689     dc.DrawText( _T("BMP handler"), 30, 1055 );
 690     if (my_horse_bmp && my_horse_bmp->Ok())
 691         dc.DrawBitmap( *my_horse_bmp, 30, 1070 );
 692
 693     dc.DrawText( _T("BMP read from memory"), 280, 1055 );
 694     if (my_horse_bmp2 && my_horse_bmp2->Ok())
 695         dc.DrawBitmap( *my_horse_bmp2, 280, 1070 );
 696
 697     dc.DrawText( _T("PNM handler"), 30, 1285 );
 698     if (my_horse_pnm && my_horse_pnm->Ok())
 699         dc.DrawBitmap( *my_horse_pnm, 30, 1300 );
 700
 701     dc.DrawText( _T("PNM handler (ascii grey)"), 280, 1285 );
 702     if (my_horse_asciigrey_pnm && my_horse_asciigrey_pnm->Ok())
 703         dc.DrawBitmap( *my_horse_asciigrey_pnm, 280, 1300 );
 704
 705     dc.DrawText( _T("PNM handler (raw grey)"), 530, 1285 );
 706     if (my_horse_rawgrey_pnm && my_horse_rawgrey_pnm->Ok())
 707         dc.DrawBitmap( *my_horse_rawgrey_pnm, 530, 1300 );
 708
 709     dc.DrawText( _T("TIFF handler"), 30, 1515 );
 710     if (my_horse_tiff && my_horse_tiff->Ok())
 711         dc.DrawBitmap( *my_horse_tiff, 30, 1530 );
 712
 713     dc.DrawText( _T("XPM handler"), 30, 1745 );
 714     if (my_horse_xpm && my_horse_xpm->Ok())
 715         dc.DrawBitmap( *my_horse_xpm, 30, 1760 );
 716
 717
 718     if (my_smile_xbm && my_smile_xbm->Ok())
 719     {
 720         dc.DrawText( _T("XBM bitmap"), 30, 1975 );
 721         dc.DrawText( _T("(green on red)"), 30, 1990 );
 722         dc.SetTextForeground( _T("GREEN") );
 723         dc.SetTextBackground( _T("RED") );
 724         dc.DrawBitmap( *my_smile_xbm, 30, 2010 );
 725
 726         dc.SetTextForeground( wxT("BLACK") );
 727         dc.DrawText( _T("After wxImage conversion"), 150, 1975 );
 728         dc.DrawText( _T("(red on white)"), 150, 1990 );
 729         dc.SetTextForeground( wxT("RED") );
 730         wxImage i = my_smile_xbm->ConvertToImage();
 731         i.SetMaskColour( 255, 255, 255 );
 732         i.Replace( 0, 0, 0,
 733                wxRED_PEN->GetColour().Red(),
 734                wxRED_PEN->GetColour().Green(),
 735                wxRED_PEN->GetColour().Blue() );
 736         dc.DrawBitmap( wxBitmap(i), 150, 2010, true );
 737         dc.SetTextForeground( wxT("BLACK") );
 738     }
 739
 740
 741     wxBitmap mono( 60,50,1 );
 742     wxMemoryDC memdc;
 743     memdc.SelectObject( mono );
 744     memdc.SetPen( *wxBLACK_PEN );
 745     memdc.SetBrush( *wxWHITE_BRUSH );
 746     memdc.DrawRectangle( 0,0,60,50 );
 747     memdc.SetTextForeground( *wxBLACK );
 748 #ifndef __WXGTK20__
 749     // I cannot convince GTK2 to draw into mono bitmaps
 750     memdc.DrawText( _T("Hi!"), 5, 5 );
 751 #endif
 752     memdc.SetBrush( *wxBLACK_BRUSH );
 753     memdc.DrawRectangle( 33,5,20,20 );
 754     memdc.SetPen( *wxRED_PEN );
 755     memdc.DrawLine( 5, 42, 50, 42 );
 756     memdc.SelectObject( wxNullBitmap );
 757
 758     if (mono.Ok())
 759     {
 760         dc.DrawText( _T("Mono bitmap"), 30, 2095 );
 761         dc.DrawText( _T("(red on green)"), 30, 2110 );
 762         dc.SetTextForeground( wxT("RED") );
 763         dc.SetTextBackground( wxT("GREEN") );
 764         dc.DrawBitmap( mono, 30, 2130 );
 765
 766         dc.SetTextForeground( wxT("BLACK") );
 767         dc.DrawText( _T("After wxImage conversion"), 150, 2095 );
 768         dc.DrawText( _T("(red on white)"), 150, 2110 );
 769         dc.SetTextForeground( wxT("RED") );
 770         wxImage i = mono.ConvertToImage();
 771         i.SetMaskColour( 255,255,255 );
 772         i.Replace( 0,0,0,
 773                wxRED_PEN->GetColour().Red(),
 774                wxRED_PEN->GetColour().Green(),
 775                wxRED_PEN->GetColour().Blue() );
 776         dc.DrawBitmap( wxBitmap(i), 150, 2130, true );
 777         dc.SetTextForeground( wxT("BLACK") );
 778     }
 779
 780     // For testing transparency
 781     dc.SetBrush( *wxRED_BRUSH );
 782     dc.DrawRectangle( 20, 2220, 560, 68 );
 783
 784     dc.DrawText(_T("XPM bitmap"), 30, 2230 );
 785     if ( m_bmpSmileXpm.Ok() )
 786         dc.DrawBitmap(m_bmpSmileXpm, 30, 2250, true);
 787
 788     dc.DrawText(_T("XPM icon"), 110, 2230 );
 789     if ( m_iconSmileXpm.Ok() )
 790         dc.DrawIcon(m_iconSmileXpm, 110, 2250);
 791
 792     // testing icon -> bitmap conversion
 793     wxBitmap to_blit( m_iconSmileXpm );
 794     if (to_blit.Ok())
 795     {
 796         dc.DrawText( _T("SubBitmap"), 170, 2230 );
 797         wxBitmap sub = to_blit.GetSubBitmap( wxRect(0,0,15,15) );
 798         if (sub.Ok())
 799             dc.DrawBitmap( sub, 170, 2250, true );
 800
 801         dc.DrawText( _T("Enlarged"), 250, 2230 );
 802         dc.SetUserScale( 1.5, 1.5 );
 803         dc.DrawBitmap( to_blit, (int)(250/1.5), (int)(2250/1.5), true );
 804         dc.SetUserScale( 2, 2 );
 805         dc.DrawBitmap( to_blit, (int)(300/2), (int)(2250/2), true );
 806         dc.SetUserScale( 1.0, 1.0 );
 807
 808         dc.DrawText( _T("Blit"), 400, 2230);
 809         wxMemoryDC blit_dc;
 810         blit_dc.SelectObject( to_blit );
 811         dc.Blit( 400, 2250, to_blit.GetWidth(), to_blit.GetHeight(), &blit_dc, 0, 0, wxCOPY, true );
 812         dc.SetUserScale( 1.5, 1.5 );
 813         dc.Blit( (int)(450/1.5), (int)(2250/1.5), to_blit.GetWidth(), to_blit.GetHeight(), &blit_dc, 0, 0, wxCOPY, true );
 814         dc.SetUserScale( 2, 2 );
 815         dc.Blit( (int)(500/2), (int)(2250/2), to_blit.GetWidth(), to_blit.GetHeight(), &blit_dc, 0, 0, wxCOPY, true );
 816         dc.SetUserScale( 1.0, 1.0 );
 817     }
 818
 819     dc.DrawText( _T("ICO handler (1st image)"), 30, 2290 );
 820     if (my_horse_ico32 && my_horse_ico32->Ok())
 821         dc.DrawBitmap( *my_horse_ico32, 30, 2330, true );
 822
 823     dc.DrawText( _T("ICO handler (2nd image)"), 230, 2290 );
 824     if (my_horse_ico16 && my_horse_ico16->Ok())
 825         dc.DrawBitmap( *my_horse_ico16, 230, 2330, true );
 826
 827     dc.DrawText( _T("ICO handler (best image)"), 430, 2290 );
 828     if (my_horse_ico && my_horse_ico->Ok())
 829         dc.DrawBitmap( *my_horse_ico, 430, 2330, true );
 830
 831     dc.DrawText( _T("CUR handler"), 30, 2390 );
 832     if (my_horse_cur && my_horse_cur->Ok())
 833     {
 834         dc.DrawBitmap( *my_horse_cur, 30, 2420, true );
 835         dc.SetPen (*wxRED_PEN);
 836         dc.DrawLine (xH-10,yH,xH+10,yH);
 837         dc.DrawLine (xH,yH-10,xH,yH+10);
 838     }
 839     dc.DrawText( _T("ANI handler"), 230, 2390 );
 840     int i ;
 841     for (i=0; i < m_ani_images; i ++)
 842         if (my_horse_ani[i].Ok())
 843         {
 844             dc.DrawBitmap( my_horse_ani[i], 230 + i * 2 * my_horse_ani[i].GetWidth() , 2420, true );
 845         }
 846 }
 847
 848 void MyCanvas::CreateAntiAliasedBitmap()
 849 {
 850   wxBitmap bitmap( 300, 300 );
 851
 852   wxMemoryDC dc;
 853
 854   dc.SelectObject( bitmap );
 855
 856   dc.Clear();
 857
 858   dc.SetFont( wxFont( 24, wxDECORATIVE, wxNORMAL, wxNORMAL) );
 859   dc.SetTextForeground( wxT("RED") );
 860   dc.DrawText( _T("This is anti-aliased Text."), 20, 20 );
 861   dc.DrawText( _T("And a Rectangle."), 20, 60 );
 862
 863   dc.SetBrush( *wxRED_BRUSH );
 864   dc.SetPen( *wxTRANSPARENT_PEN );
 865   dc.DrawRoundedRectangle( 20, 100, 200, 180, 20 );
 866
 867   wxImage original= bitmap.ConvertToImage();
 868   wxImage anti( 150, 150 );
 869
 870   /* This is quite slow, but safe. Use wxImage::GetData() for speed instead. */
 871
 872   for (int y = 1; y < 149; y++)
 873     for (int x = 1; x < 149; x++)
 874     {
 875        int red = original.GetRed( x*2, y*2 ) +
 876                  original.GetRed( x*2-1, y*2 ) +
 877                  original.GetRed( x*2, y*2+1 ) +
 878                  original.GetRed( x*2+1, y*2+1 );
 879        red = red/4;
 880
 881        int green = original.GetGreen( x*2, y*2 ) +
 882                    original.GetGreen( x*2-1, y*2 ) +
 883                    original.GetGreen( x*2, y*2+1 ) +
 884                    original.GetGreen( x*2+1, y*2+1 );
 885        green = green/4;
 886
 887        int blue = original.GetBlue( x*2, y*2 ) +
 888                   original.GetBlue( x*2-1, y*2 ) +
 889                   original.GetBlue( x*2, y*2+1 ) +
 890                   original.GetBlue( x*2+1, y*2+1 );
 891        blue = blue/4;
 892        anti.SetRGB( x, y, (unsigned char)red, (unsigned char)green, (unsigned char)blue );
 893     }
 894   my_anti = new wxBitmap(anti);
 895 }
 896
 897 // MyFrame
 898
 899 enum
 900 {
 901     ID_QUIT  = 108,
 902     ID_ABOUT,
 903     ID_NEW,
 904     ID_SHOWRAW
 905 };
 906
 907 IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )
 908
 909 BEGIN_EVENT_TABLE(MyFrame,wxFrame)
 910   EVT_MENU    (ID_ABOUT, MyFrame::OnAbout)
 911   EVT_MENU    (ID_QUIT,  MyFrame::OnQuit)
 912   EVT_MENU    (ID_NEW,  MyFrame::OnNewFrame)
 913 #ifdef wxHAVE_RAW_BITMAP
 914   EVT_MENU    (ID_SHOWRAW,  MyFrame::OnTestRawBitmap)
 915 #endif
 916
 917 #if wxUSE_CLIPBOARD
 918     EVT_MENU(wxID_COPY, MyFrame::OnCopy)
 919     EVT_MENU(wxID_PASTE, MyFrame::OnPaste)
 920 #endif // wxUSE_CLIPBOARD
 921 END_EVENT_TABLE()
 922
 923 MyFrame::MyFrame()
 924        : wxFrame( (wxFrame *)NULL, wxID_ANY, _T("wxImage sample"),
 925                   wxPoint(20,20), wxSize(470,360) )
 926 {
 927   wxMenuBar *menu_bar = new wxMenuBar();
 928
 929   wxMenu *menuImage = new wxMenu;
 930   menuImage->Append( ID_NEW, _T("&Show any image...\tCtrl-O"));
 931
 932 #ifdef wxHAVE_RAW_BITMAP
 933   menuImage->Append( ID_SHOWRAW, _T("Test &raw bitmap...\tCtrl-R"));
 934 #endif
 935   menuImage->AppendSeparator();
 936   menuImage->Append( ID_ABOUT, _T("&About..."));
 937   menuImage->AppendSeparator();
 938   menuImage->Append( ID_QUIT, _T("E&xit\tCtrl-Q"));
 939   menu_bar->Append(menuImage, _T("&Image"));
 940
 941 #if wxUSE_CLIPBOARD
 942   wxMenu *menuClipboard = new wxMenu;
 943   menuClipboard->Append(wxID_COPY, _T("&Copy test image\tCtrl-C"));
 944   menuClipboard->Append(wxID_PASTE, _T("&Paste image\tCtrl-V"));
 945   menu_bar->Append(menuClipboard, _T("&Clipboard"));
 946 #endif // wxUSE_CLIPBOARD
 947
 948   SetMenuBar( menu_bar );
 949
 950 #if wxUSE_STATUSBAR
 951   CreateStatusBar(2);
 952   int widths[] = { -1, 100 };
 953   SetStatusWidths( 2, widths );
 954 #endif // wxUSE_STATUSBAR
 955
 956   m_canvas = new MyCanvas( this, wxID_ANY, wxPoint(0,0), wxSize(10,10) );
 957
 958   // 500 width * 2500 height
 959   m_canvas->SetScrollbars( 10, 10, 50, 250 );
 960 }
 961
 962 void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
 963 {
 964   Close( true );
 965 }
 966
 967 void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) )
 968 {
 969   (void)wxMessageBox( _T("wxImage demo\n")
 970                       _T("Robert Roebling (c) 1998,2000"),
 971                       _T("About wxImage Demo"), wxICON_INFORMATION | wxOK );
 972 }
 973
 974 void MyFrame::OnNewFrame( wxCommandEvent &WXUNUSED(event) )
 975 {
 976     wxString filename = wxFileSelector(_T("Select image file"));
 977     if ( !filename )
 978         return;
 979
 980     wxImage image;
 981     if ( !image.LoadFile(filename) )
 982     {
 983         wxLogError(_T("Couldn't load image from '%s'."), filename.c_str());
 984
 985         return;
 986     }
 987
 988     (new MyImageFrame(this, wxBitmap(image)))->Show();
 989 }
 990
 991 #ifdef wxHAVE_RAW_BITMAP
 992
 993 void MyFrame::OnTestRawBitmap( wxCommandEvent &WXUNUSED(event) )
 994 {
 995     (new MyRawBitmapFrame(this))->Show();
 996 }
 997
 998 #endif // wxHAVE_RAW_BITMAP
 999
1000 #if wxUSE_CLIPBOARD
1001
1002 void MyFrame::OnCopy(wxCommandEvent& WXUNUSED(event))
1003 {
1004     wxBitmapDataObject *dobjBmp = new wxBitmapDataObject;
1005     dobjBmp->SetBitmap(*m_canvas->my_horse_png);
1006
1007     wxTheClipboard->Open();
1008
1009     if ( !wxTheClipboard->SetData(dobjBmp) )
1010     {
1011         wxLogError(_T("Failed to copy bitmap to clipboard"));
1012     }
1013
1014     wxTheClipboard->Close();
1015 }
1016
1017 void MyFrame::OnPaste(wxCommandEvent& WXUNUSED(event))
1018 {
1019     wxBitmapDataObject dobjBmp;
1020
1021     wxTheClipboard->Open();
1022     if ( !wxTheClipboard->GetData(dobjBmp) )
1023     {
1024         wxLogMessage(_T("No bitmap data in the clipboard"));
1025     }
1026     else
1027     {
1028         (new MyImageFrame(this, dobjBmp.GetBitmap()))->Show();
1029     }
1030     wxTheClipboard->Close();
1031 }
1032
1033 #endif // wxUSE_CLIPBOARD
1034
1035 //-----------------------------------------------------------------------------
1036 // MyApp
1037 //-----------------------------------------------------------------------------
1038
1039 bool MyApp::OnInit()
1040 {
1041 #if wxUSE_LIBPNG
1042   wxImage::AddHandler( new wxPNGHandler );
1043 #endif
1044
1045 #if wxUSE_LIBJPEG
1046   wxImage::AddHandler( new wxJPEGHandler );
1047 #endif
1048
1049 #if wxUSE_LIBTIFF
1050   wxImage::AddHandler( new wxTIFFHandler );
1051 #endif
1052
1053 #if wxUSE_GIF
1054   wxImage::AddHandler( new wxGIFHandler );
1055 #endif
1056
1057 #if wxUSE_PCX
1058   wxImage::AddHandler( new wxPCXHandler );
1059 #endif
1060
1061 #if wxUSE_PNM
1062   wxImage::AddHandler( new wxPNMHandler );
1063 #endif
1064
1065 #if wxUSE_XPM
1066   wxImage::AddHandler( new wxXPMHandler );
1067 #endif
1068
1069 #if wxUSE_ICO_CUR
1070   wxImage::AddHandler( new wxICOHandler );
1071   wxImage::AddHandler( new wxCURHandler );
1072   wxImage::AddHandler( new wxANIHandler );
1073 #endif
1074
1075   wxFrame *frame = new MyFrame();
1076   frame->Show( true );
1077
1078   return true;
1079 }
1080