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, 32)
 306     {
 307         SetClientSize(SIZE, SIZE);
 308
 309         // another possibility: wxNativePixelData (don't forget to remove code
 310         // setting alpha in the loop below then)
 311         typedef wxAlphaPixelData Data;
 312         // typedef wxNativePixelData Data;
 313
 314         // First, clear the whole bitmap by making it alpha
 315         {
 316             Data data( m_bitmap, wxPoint(0,0), wxSize(SIZE, SIZE) );
 317             if ( !data )
 318             {
 319                 wxLogError(_T("Failed to gain raw access to bitmap data"));
 320                 return;
 321             }
 322             data.UseAlpha();
 323             Data::Iterator p(data);
 324             for ( int y = 0; y < SIZE; ++y )
 325             {
 326                 Data::Iterator rowStart = p;
 327                 for ( int x = 0; x < SIZE; ++x )
 328                 {
 329                     p.Alpha() = 0;
 330                     ++p; // same as p.OffsetX(1)
 331                 }
 332                 p = rowStart;
 333                 p.OffsetY(data, 1);
 334             }
 335         }
 336
 337         // Then, draw colourful alpha-blended stripes
 338         Data data(m_bitmap, wxPoint(BORDER, BORDER) , wxSize(REAL_SIZE, REAL_SIZE));
 339         if ( !data )
 340         {
 341             wxLogError(_T("Failed to gain raw access to bitmap data"));
 342             return;
 343         }
 344
 345         data.UseAlpha();
 346
 347         Data::Iterator p(data);
 348
 349         for ( int y = 0; y < REAL_SIZE; ++y )
 350         {
 351             Data::Iterator rowStart = p;
 352
 353             int r = y < REAL_SIZE/3 ? 255 : 0,
 354                 g = (REAL_SIZE/3 <= y) && (y < 2*(REAL_SIZE/3)) ? 255 : 0,
 355                 b = 2*(REAL_SIZE/3) <= y ? 255 : 0;
 356
 357             for ( int x = 0; x < REAL_SIZE; ++x )
 358             {
 359                 // note that RGB must be premultiplied by alpha
 360                 unsigned a = (Data::Iterator::ChannelType)((x*255.)/REAL_SIZE);
 361                 p.Red() = r * a / 256;
 362                 p.Green() = g * a / 256;
 363                 p.Blue() = b * a / 256;
 364                 p.Alpha() = a;
 365
 366                 ++p; // same as p.OffsetX(1)
 367             }
 368
 369             p = rowStart;
 370             p.OffsetY(data, 1);
 371         }
 372     }
 373
 374     void OnPaint(wxPaintEvent& WXUNUSED(event))
 375     {
 376         wxPaintDC dc( this );
 377         dc.DrawText(_T("This is alpha and raw bitmap test"), 0, BORDER);
 378         dc.DrawText(_T("This is alpha and raw bitmap test"), 0, SIZE/2 - BORDER);
 379         dc.DrawText(_T("This is alpha and raw bitmap test"), 0, SIZE - 2*BORDER);
 380         dc.DrawBitmap( m_bitmap, 0, 0, true /* use mask */ );
 381     }
 382
 383 private:
 384     wxBitmap m_bitmap;
 385
 386     DECLARE_EVENT_TABLE()
 387 };
 388
 389 #endif // wxHAVE_RAW_BITMAP
 390
 391 // MyApp
 392
 393 class MyApp: public wxApp
 394 {
 395 public:
 396     virtual bool OnInit();
 397 };
 398
 399 // main program
 400
 401 IMPLEMENT_APP(MyApp)
 402
 403 // MyCanvas
 404
 405 BEGIN_EVENT_TABLE(MyImageFrame, wxFrame)
 406     EVT_ERASE_BACKGROUND(MyImageFrame::OnEraseBackground)
 407     EVT_PAINT(MyImageFrame::OnPaint)
 408     EVT_LEFT_DCLICK(MyImageFrame::OnSave)
 409 END_EVENT_TABLE()
 410
 411 #ifdef wxHAVE_RAW_BITMAP
 412
 413 BEGIN_EVENT_TABLE(MyRawBitmapFrame, wxFrame)
 414     EVT_PAINT(MyRawBitmapFrame::OnPaint)
 415 END_EVENT_TABLE()
 416
 417 #endif // wxHAVE_RAW_BITMAP
 418
 419 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
 420   EVT_PAINT(MyCanvas::OnPaint)
 421 END_EVENT_TABLE()
 422
 423 MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
 424                     const wxPoint &pos, const wxSize &size )
 425         : wxScrolledWindow( parent, id, pos, size, wxSUNKEN_BORDER )
 426           , m_bmpSmileXpm((const char **) smile_xpm)
 427           , m_iconSmileXpm((const char **) smile_xpm)
 428 {
 429     my_horse_ani = NULL;
 430     m_ani_images = 0 ;
 431
 432     SetBackgroundColour(* wxWHITE);
 433
 434     wxBitmap bitmap( 100, 100 );
 435
 436     wxMemoryDC dc;
 437     dc.SelectObject( bitmap );
 438     dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) );
 439     dc.SetPen( *wxBLACK_PEN );
 440     dc.DrawRectangle( 0, 0, 100, 100 );
 441     dc.SetBrush( *wxWHITE_BRUSH );
 442     dc.DrawRectangle( 20, 20, 60, 60 );
 443     dc.SelectObject( wxNullBitmap );
 444
 445     // try to find the directory with our images
 446     wxString dir;
 447     if ( wxFile::Exists(wxT("./horse.png")) )
 448         dir = wxT("./");
 449     else if ( wxFile::Exists(wxT("../horse.png")) )
 450         dir = wxT("../");
 451     else
 452         wxLogWarning(wxT("Can't find image files in either '.' or '..'!"));
 453
 454     wxImage image = bitmap.ConvertToImage();
 455
 456 #if wxUSE_LIBPNG
 457     if ( !image.SaveFile( dir + _T("test.png"), wxBITMAP_TYPE_PNG ))
 458         wxLogError(wxT("Can't save file"));
 459
 460     image.Destroy();
 461
 462     if ( image.LoadFile( dir + _T("test.png") ) )
 463         my_square = wxBitmap( image );
 464
 465     image.Destroy();
 466
 467     if ( !image.LoadFile( dir + _T("horse.png")) )
 468         wxLogError(wxT("Can't load PNG image"));
 469     else
 470         my_horse_png = wxBitmap( image );
 471
 472     if ( !image.LoadFile( dir + _T("toucan.png")) )
 473         wxLogError(wxT("Can't load PNG image"));
 474     else
 475         my_toucan = wxBitmap(image);
 476
 477     my_toucan_flipped_horiz = wxBitmap(image.Mirror(true));
 478     my_toucan_flipped_vert = wxBitmap(image.Mirror(false));
 479     my_toucan_flipped_both = wxBitmap(image.Mirror(true).Mirror(false));
 480     my_toucan_grey = wxBitmap(image.ConvertToGreyscale());
 481     my_toucan_head = wxBitmap(image.GetSubImage(wxRect(40, 7, 80, 60)));
 482
 483 #endif // wxUSE_LIBPNG
 484
 485 #if wxUSE_LIBJPEG
 486     image.Destroy();
 487
 488     if ( !image.LoadFile( dir + _T("horse.jpg")) )
 489         wxLogError(wxT("Can't load JPG image"));
 490     else
 491     {
 492         my_horse_jpeg = wxBitmap( image );
 493
 494         // Colorize by rotating green hue to red
 495         wxImage::HSVValue greenHSV = wxImage::RGBtoHSV(wxImage::RGBValue(0, 255, 0));
 496         wxImage::HSVValue redHSV = wxImage::RGBtoHSV(wxImage::RGBValue(255, 0, 0));
 497         image.RotateHue(redHSV.hue - greenHSV.hue);
 498         colorized_horse_jpeg = wxBitmap( image );
 499     }
 500
 501     if ( !image.LoadFile( dir + _T("cmyk.jpg")) )
 502         wxLogError(_T("Can't load CMYK JPG image"));
 503     else
 504         my_cmyk_jpeg = wxBitmap(image);
 505 #endif // wxUSE_LIBJPEG
 506
 507 #if wxUSE_GIF
 508     image.Destroy();
 509
 510     if ( !image.LoadFile( dir + _T("horse.gif" )) )
 511         wxLogError(wxT("Can't load GIF image"));
 512     else
 513         my_horse_gif = wxBitmap( image );
 514 #endif
 515
 516 #if wxUSE_PCX
 517     image.Destroy();
 518
 519     if ( !image.LoadFile( dir + _T("horse.pcx"), wxBITMAP_TYPE_PCX ) )
 520         wxLogError(wxT("Can't load PCX image"));
 521     else
 522         my_horse_pcx = wxBitmap( image );
 523 #endif
 524
 525     image.Destroy();
 526
 527     if ( !image.LoadFile( dir + _T("horse.bmp"), wxBITMAP_TYPE_BMP ) )
 528         wxLogError(wxT("Can't load BMP image"));
 529     else
 530         my_horse_bmp = wxBitmap( image );
 531
 532 #if wxUSE_XPM
 533     image.Destroy();
 534
 535     if ( !image.LoadFile( dir + _T("horse.xpm"), wxBITMAP_TYPE_XPM ) )
 536         wxLogError(wxT("Can't load XPM image"));
 537     else
 538         my_horse_xpm = wxBitmap( image );
 539
 540     if ( !image.SaveFile( dir + _T("test.xpm"), wxBITMAP_TYPE_XPM ))
 541         wxLogError(wxT("Can't save file"));
 542 #endif
 543
 544 #if wxUSE_PNM
 545     image.Destroy();
 546
 547     if ( !image.LoadFile( dir + _T("horse.pnm"), wxBITMAP_TYPE_PNM ) )
 548         wxLogError(wxT("Can't load PNM image"));
 549     else
 550         my_horse_pnm = wxBitmap( image );
 551
 552     image.Destroy();
 553
 554     if ( !image.LoadFile( dir + _T("horse_ag.pnm"), wxBITMAP_TYPE_PNM ) )
 555         wxLogError(wxT("Can't load PNM image"));
 556     else
 557         my_horse_asciigrey_pnm = wxBitmap( image );
 558
 559     image.Destroy();
 560
 561     if ( !image.LoadFile( dir + _T("horse_rg.pnm"), wxBITMAP_TYPE_PNM ) )
 562         wxLogError(wxT("Can't load PNM image"));
 563     else
 564         my_horse_rawgrey_pnm = wxBitmap( image );
 565 #endif
 566
 567 #if wxUSE_LIBTIFF
 568     image.Destroy();
 569
 570     if ( !image.LoadFile( dir + _T("horse.tif"), wxBITMAP_TYPE_TIF ) )
 571         wxLogError(wxT("Can't load TIFF image"));
 572     else
 573         my_horse_tiff = wxBitmap( image );
 574 #endif
 575
 576     CreateAntiAliasedBitmap();
 577
 578     my_smile_xbm = wxBitmap( (const char*)smile_bits, smile_width,
 579                                  smile_height, 1 );
 580
 581     // demonstrates XPM automatically using the mask when saving
 582     if ( m_bmpSmileXpm.Ok() )
 583         m_bmpSmileXpm.SaveFile(_T("saved.xpm"), wxBITMAP_TYPE_XPM);
 584
 585 #if wxUSE_ICO_CUR
 586     image.Destroy();
 587
 588     if ( !image.LoadFile( dir + _T("horse.ico"), wxBITMAP_TYPE_ICO, 0 ) )
 589         wxLogError(wxT("Can't load first ICO image"));
 590     else
 591         my_horse_ico32 = wxBitmap( image );
 592
 593     image.Destroy();
 594
 595     if ( !image.LoadFile( dir + _T("horse.ico"), wxBITMAP_TYPE_ICO, 1 ) )
 596         wxLogError(wxT("Can't load second ICO image"));
 597     else
 598         my_horse_ico16 = wxBitmap( image );
 599
 600     image.Destroy();
 601
 602     if ( !image.LoadFile( dir + _T("horse.ico") ) )
 603         wxLogError(wxT("Can't load best ICO image"));
 604     else
 605         my_horse_ico = wxBitmap( image );
 606
 607     image.Destroy();
 608
 609     if ( !image.LoadFile( dir + _T("horse.cur"), wxBITMAP_TYPE_CUR ) )
 610         wxLogError(wxT("Can't load best ICO image"));
 611     else
 612     {
 613         my_horse_cur = wxBitmap( image );
 614         xH = 30 + image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X) ;
 615         yH = 2420 + image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y) ;
 616     }
 617
 618     m_ani_images = wxImage::GetImageCount ( dir + _T("horse3.ani"), wxBITMAP_TYPE_ANI );
 619     if (m_ani_images==0)
 620         wxLogError(wxT("No ANI-format images found"));
 621     else
 622         my_horse_ani = new wxBitmap [m_ani_images];
 623     int i ;
 624     for (i=0; i < m_ani_images; i++)
 625     {
 626         image.Destroy();
 627         if (!image.LoadFile( dir + _T("horse3.ani"), wxBITMAP_TYPE_ANI, i ))
 628         {
 629             wxString tmp = wxT("Can't load image number ");
 630             tmp << i ;
 631             wxLogError(tmp);
 632         }
 633         else
 634             my_horse_ani [i] = wxBitmap( image );
 635     }
 636 #endif // wxUSE_ICO_CUR
 637
 638     image.Destroy();
 639
 640     // test image loading from stream
 641     wxFile file(dir + _T("horse.bmp"));
 642     if ( file.IsOpened() )
 643     {
 644         wxFileOffset len = file.Length();
 645         size_t dataSize = (size_t)len;
 646         void *data = malloc(dataSize);
 647         if ( file.Read(data, dataSize) != len )
 648             wxLogError(_T("Reading bitmap file failed"));
 649         else
 650         {
 651             wxMemoryInputStream mis(data, dataSize);
 652             if ( !image.LoadFile(mis) )
 653                 wxLogError(wxT("Can't load BMP image from stream"));
 654             else
 655                 my_horse_bmp2 = wxBitmap( image );
 656         }
 657
 658         free(data);
 659     }
 660 }
 661
 662 MyCanvas::~MyCanvas()
 663 {
 664     delete [] my_horse_ani;
 665 }
 666
 667 void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
 668 {
 669     wxPaintDC dc( this );
 670     PrepareDC( dc );
 671
 672     dc.DrawText( _T("Loaded image"), 30, 10 );
 673     if (my_square.Ok())
 674         dc.DrawBitmap( my_square, 30, 30 );
 675
 676     dc.DrawText( _T("Drawn directly"), 150, 10 );
 677     dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) );
 678     dc.SetPen( *wxBLACK_PEN );
 679     dc.DrawRectangle( 150, 30, 100, 100 );
 680     dc.SetBrush( *wxWHITE_BRUSH );
 681     dc.DrawRectangle( 170, 50, 60, 60 );
 682
 683     if (my_anti.Ok())
 684         dc.DrawBitmap( my_anti, 280, 30 );
 685
 686     dc.DrawText( _T("PNG handler"), 30, 135 );
 687     if (my_horse_png.Ok())
 688     {
 689         dc.DrawBitmap( my_horse_png, 30, 150 );
 690         wxRect rect(0,0,100,100);
 691         wxBitmap sub( my_horse_png.GetSubBitmap(rect) );
 692         dc.DrawText( _T("GetSubBitmap()"), 280, 175 );
 693         dc.DrawBitmap( sub, 280, 195 );
 694     }
 695
 696     dc.DrawText( _T("JPEG handler"), 30, 365 );
 697     if (my_horse_jpeg.Ok())
 698         dc.DrawBitmap( my_horse_jpeg, 30, 380 );
 699
 700     dc.DrawText( _T("Green rotated to red"), 280, 365 );
 701     if (colorized_horse_jpeg.Ok())
 702         dc.DrawBitmap( colorized_horse_jpeg, 280, 380 );
 703
 704     dc.DrawText( _T("CMYK JPEG image"), 530, 365 );
 705     if (my_cmyk_jpeg.Ok())
 706         dc.DrawBitmap( my_cmyk_jpeg, 530, 380 );
 707
 708     dc.DrawText( _T("GIF handler"), 30, 595 );
 709     if (my_horse_gif.Ok())
 710         dc.DrawBitmap( my_horse_gif, 30, 610 );
 711
 712     dc.DrawText( _T("PCX handler"), 30, 825 );
 713     if (my_horse_pcx.Ok())
 714         dc.DrawBitmap( my_horse_pcx, 30, 840 );
 715
 716     dc.DrawText( _T("BMP handler"), 30, 1055 );
 717     if (my_horse_bmp.Ok())
 718         dc.DrawBitmap( my_horse_bmp, 30, 1070 );
 719
 720     dc.DrawText( _T("BMP read from memory"), 280, 1055 );
 721     if (my_horse_bmp2.Ok())
 722         dc.DrawBitmap( my_horse_bmp2, 280, 1070 );
 723
 724     dc.DrawText( _T("PNM handler"), 30, 1285 );
 725     if (my_horse_pnm.Ok())
 726         dc.DrawBitmap( my_horse_pnm, 30, 1300 );
 727
 728     dc.DrawText( _T("PNM handler (ascii grey)"), 280, 1285 );
 729     if (my_horse_asciigrey_pnm.Ok())
 730         dc.DrawBitmap( my_horse_asciigrey_pnm, 280, 1300 );
 731
 732     dc.DrawText( _T("PNM handler (raw grey)"), 530, 1285 );
 733     if (my_horse_rawgrey_pnm.Ok())
 734         dc.DrawBitmap( my_horse_rawgrey_pnm, 530, 1300 );
 735
 736     dc.DrawText( _T("TIFF handler"), 30, 1515 );
 737     if (my_horse_tiff.Ok())
 738         dc.DrawBitmap( my_horse_tiff, 30, 1530 );
 739
 740     dc.DrawText( _T("XPM handler"), 30, 1745 );
 741     if (my_horse_xpm.Ok())
 742         dc.DrawBitmap( my_horse_xpm, 30, 1760 );
 743
 744     // toucans
 745     {
 746         int x = 750, y = 10, yy = 170;
 747
 748         dc.DrawText(wxT("Original toucan"), x+50, y);
 749         dc.DrawBitmap(my_toucan, x, y+15);
 750         y += yy;
 751         dc.DrawText(wxT("Flipped horizontally"), x+50, y);
 752         dc.DrawBitmap(my_toucan_flipped_horiz, x, y+15);
 753         y += yy;
 754         dc.DrawText(wxT("Flipped vertically"), x+50, y);
 755         dc.DrawBitmap(my_toucan_flipped_vert, x, y+15);
 756         y += yy;
 757         dc.DrawText(wxT("Flipped both h&v"), x+50, y);
 758         dc.DrawBitmap(my_toucan_flipped_both, x, y+15);
 759
 760         y += yy;
 761         dc.DrawText(wxT("In greyscale"), x+50, y);
 762         dc.DrawBitmap(my_toucan_grey, x, y+15);
 763
 764         y += yy;
 765         dc.DrawText(wxT("Toucan's head"), x+50, y);
 766         dc.DrawBitmap(my_toucan_head, x, y+15);
 767     }
 768
 769     if (my_smile_xbm.Ok())
 770     {
 771         dc.DrawText( _T("XBM bitmap"), 30, 1975 );
 772         dc.DrawText( _T("(green on red)"), 30, 1990 );
 773         dc.SetTextForeground( _T("GREEN") );
 774         dc.SetTextBackground( _T("RED") );
 775         dc.DrawBitmap( my_smile_xbm, 30, 2010 );
 776
 777         dc.SetTextForeground( *wxBLACK );
 778         dc.DrawText( _T("After wxImage conversion"), 150, 1975 );
 779         dc.DrawText( _T("(red on white)"), 150, 1990 );
 780         dc.SetTextForeground( wxT("RED") );
 781         wxImage i = my_smile_xbm.ConvertToImage();
 782         i.SetMaskColour( 255, 255, 255 );
 783         i.Replace( 0, 0, 0,
 784                wxRED_PEN->GetColour().Red(),
 785                wxRED_PEN->GetColour().Green(),
 786                wxRED_PEN->GetColour().Blue() );
 787         dc.DrawBitmap( wxBitmap(i), 150, 2010, true );
 788         dc.SetTextForeground( *wxBLACK );
 789     }
 790
 791
 792     wxBitmap mono( 60,50,1 );
 793     wxMemoryDC memdc;
 794     memdc.SelectObject( mono );
 795     memdc.SetPen( *wxBLACK_PEN );
 796     memdc.SetBrush( *wxWHITE_BRUSH );
 797     memdc.DrawRectangle( 0,0,60,50 );
 798     memdc.SetTextForeground( *wxBLACK );
 799 #ifndef __WXGTK20__
 800     // I cannot convince GTK2 to draw into mono bitmaps
 801     memdc.DrawText( _T("Hi!"), 5, 5 );
 802 #endif
 803     memdc.SetBrush( *wxBLACK_BRUSH );
 804     memdc.DrawRectangle( 33,5,20,20 );
 805     memdc.SetPen( *wxRED_PEN );
 806     memdc.DrawLine( 5, 42, 50, 42 );
 807     memdc.SelectObject( wxNullBitmap );
 808
 809     if (mono.Ok())
 810     {
 811         dc.DrawText( _T("Mono bitmap"), 30, 2095 );
 812         dc.DrawText( _T("(red on green)"), 30, 2110 );
 813         dc.SetTextForeground( wxT("RED") );
 814         dc.SetTextBackground( wxT("GREEN") );
 815         dc.DrawBitmap( mono, 30, 2130 );
 816
 817         dc.SetTextForeground( *wxBLACK );
 818         dc.DrawText( _T("After wxImage conversion"), 150, 2095 );
 819         dc.DrawText( _T("(red on white)"), 150, 2110 );
 820         dc.SetTextForeground( wxT("RED") );
 821         wxImage i = mono.ConvertToImage();
 822         i.SetMaskColour( 255,255,255 );
 823         i.Replace( 0,0,0,
 824                wxRED_PEN->GetColour().Red(),
 825                wxRED_PEN->GetColour().Green(),
 826                wxRED_PEN->GetColour().Blue() );
 827         dc.DrawBitmap( wxBitmap(i), 150, 2130, true );
 828         dc.SetTextForeground( *wxBLACK );
 829     }
 830
 831     // For testing transparency
 832     dc.SetBrush( *wxRED_BRUSH );
 833     dc.DrawRectangle( 20, 2220, 560, 68 );
 834
 835     dc.DrawText(_T("XPM bitmap"), 30, 2230 );
 836     if ( m_bmpSmileXpm.Ok() )
 837         dc.DrawBitmap(m_bmpSmileXpm, 30, 2250, true);
 838
 839     dc.DrawText(_T("XPM icon"), 110, 2230 );
 840     if ( m_iconSmileXpm.Ok() )
 841         dc.DrawIcon(m_iconSmileXpm, 110, 2250);
 842
 843     // testing icon -> bitmap conversion
 844     wxBitmap to_blit( m_iconSmileXpm );
 845     if (to_blit.Ok())
 846     {
 847         dc.DrawText( _T("SubBitmap"), 170, 2230 );
 848         wxBitmap sub = to_blit.GetSubBitmap( wxRect(0,0,15,15) );
 849         if (sub.Ok())
 850             dc.DrawBitmap( sub, 170, 2250, true );
 851
 852         dc.DrawText( _T("Enlarged"), 250, 2230 );
 853         dc.SetUserScale( 1.5, 1.5 );
 854         dc.DrawBitmap( to_blit, (int)(250/1.5), (int)(2250/1.5), true );
 855         dc.SetUserScale( 2, 2 );
 856         dc.DrawBitmap( to_blit, (int)(300/2), (int)(2250/2), true );
 857         dc.SetUserScale( 1.0, 1.0 );
 858
 859         dc.DrawText( _T("Blit"), 400, 2230);
 860         wxMemoryDC blit_dc;
 861         blit_dc.SelectObject( to_blit );
 862         dc.Blit( 400, 2250, to_blit.GetWidth(), to_blit.GetHeight(), &blit_dc, 0, 0, wxCOPY, true );
 863         dc.SetUserScale( 1.5, 1.5 );
 864         dc.Blit( (int)(450/1.5), (int)(2250/1.5), to_blit.GetWidth(), to_blit.GetHeight(), &blit_dc, 0, 0, wxCOPY, true );
 865         dc.SetUserScale( 2, 2 );
 866         dc.Blit( (int)(500/2), (int)(2250/2), to_blit.GetWidth(), to_blit.GetHeight(), &blit_dc, 0, 0, wxCOPY, true );
 867         dc.SetUserScale( 1.0, 1.0 );
 868     }
 869
 870     dc.DrawText( _T("ICO handler (1st image)"), 30, 2290 );
 871     if (my_horse_ico32.Ok())
 872         dc.DrawBitmap( my_horse_ico32, 30, 2330, true );
 873
 874     dc.DrawText( _T("ICO handler (2nd image)"), 230, 2290 );
 875     if (my_horse_ico16.Ok())
 876         dc.DrawBitmap( my_horse_ico16, 230, 2330, true );
 877
 878     dc.DrawText( _T("ICO handler (best image)"), 430, 2290 );
 879     if (my_horse_ico.Ok())
 880         dc.DrawBitmap( my_horse_ico, 430, 2330, true );
 881
 882     dc.DrawText( _T("CUR handler"), 30, 2390 );
 883     if (my_horse_cur.Ok())
 884     {
 885         dc.DrawBitmap( my_horse_cur, 30, 2420, true );
 886         dc.SetPen (*wxRED_PEN);
 887         dc.DrawLine (xH-10,yH,xH+10,yH);
 888         dc.DrawLine (xH,yH-10,xH,yH+10);
 889     }
 890
 891     dc.DrawText( _T("ANI handler"), 230, 2390 );
 892     for ( int i=0; i < m_ani_images; i++ )
 893     {
 894         if (my_horse_ani[i].Ok())
 895         {
 896             dc.DrawBitmap( my_horse_ani[i], 230 + i * 2 * my_horse_ani[i].GetWidth() , 2420, true );
 897         }
 898     }
 899 }
 900
 901 void MyCanvas::CreateAntiAliasedBitmap()
 902 {
 903   wxBitmap bitmap( 300, 300 );
 904
 905   wxMemoryDC dc;
 906
 907   dc.SelectObject( bitmap );
 908
 909   dc.Clear();
 910
 911   dc.SetFont( wxFont( 24, wxDECORATIVE, wxNORMAL, wxNORMAL) );
 912   dc.SetTextForeground( wxT("RED") );
 913   dc.DrawText( _T("This is anti-aliased Text."), 20, 5 );
 914   dc.DrawText( _T("And a Rectangle."), 20, 45 );
 915
 916   dc.SetBrush( *wxRED_BRUSH );
 917   dc.SetPen( *wxTRANSPARENT_PEN );
 918   dc.DrawRoundedRectangle( 20, 85, 200, 180, 20 );
 919
 920   wxImage original= bitmap.ConvertToImage();
 921   wxImage anti( 150, 150 );
 922
 923   /* This is quite slow, but safe. Use wxImage::GetData() for speed instead. */
 924
 925   for (int y = 1; y < 149; y++)
 926     for (int x = 1; x < 149; x++)
 927     {
 928        int red = original.GetRed( x*2, y*2 ) +
 929                  original.GetRed( x*2-1, y*2 ) +
 930                  original.GetRed( x*2, y*2+1 ) +
 931                  original.GetRed( x*2+1, y*2+1 );
 932        red = red/4;
 933
 934        int green = original.GetGreen( x*2, y*2 ) +
 935                    original.GetGreen( x*2-1, y*2 ) +
 936                    original.GetGreen( x*2, y*2+1 ) +
 937                    original.GetGreen( x*2+1, y*2+1 );
 938        green = green/4;
 939
 940        int blue = original.GetBlue( x*2, y*2 ) +
 941                   original.GetBlue( x*2-1, y*2 ) +
 942                   original.GetBlue( x*2, y*2+1 ) +
 943                   original.GetBlue( x*2+1, y*2+1 );
 944        blue = blue/4;
 945        anti.SetRGB( x, y, (unsigned char)red, (unsigned char)green, (unsigned char)blue );
 946     }
 947   my_anti = wxBitmap(anti);
 948 }
 949
 950 // MyFrame
 951
 952 enum
 953 {
 954     ID_QUIT  = wxID_EXIT,
 955     ID_ABOUT = wxID_ABOUT,
 956     ID_NEW = 100,
 957     ID_SHOWRAW = 101
 958 };
 959
 960 IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )
 961
 962 BEGIN_EVENT_TABLE(MyFrame,wxFrame)
 963   EVT_MENU    (ID_ABOUT, MyFrame::OnAbout)
 964   EVT_MENU    (ID_QUIT,  MyFrame::OnQuit)
 965   EVT_MENU    (ID_NEW,  MyFrame::OnNewFrame)
 966 #ifdef wxHAVE_RAW_BITMAP
 967   EVT_MENU    (ID_SHOWRAW,  MyFrame::OnTestRawBitmap)
 968 #endif
 969
 970 #if wxUSE_CLIPBOARD
 971     EVT_MENU(wxID_COPY, MyFrame::OnCopy)
 972     EVT_MENU(wxID_PASTE, MyFrame::OnPaste)
 973 #endif // wxUSE_CLIPBOARD
 974 END_EVENT_TABLE()
 975
 976 MyFrame::MyFrame()
 977        : wxFrame( (wxFrame *)NULL, wxID_ANY, _T("wxImage sample"),
 978                   wxPoint(20, 20), wxSize(950, 700) )
 979 {
 980   wxMenuBar *menu_bar = new wxMenuBar();
 981
 982   wxMenu *menuImage = new wxMenu;
 983   menuImage->Append( ID_NEW, _T("&Show any image...\tCtrl-O"));
 984
 985 #ifdef wxHAVE_RAW_BITMAP
 986   menuImage->Append( ID_SHOWRAW, _T("Test &raw bitmap...\tCtrl-R"));
 987 #endif
 988   menuImage->AppendSeparator();
 989   menuImage->Append( ID_ABOUT, _T("&About..."));
 990   menuImage->AppendSeparator();
 991   menuImage->Append( ID_QUIT, _T("E&xit\tCtrl-Q"));
 992   menu_bar->Append(menuImage, _T("&Image"));
 993
 994 #if wxUSE_CLIPBOARD
 995   wxMenu *menuClipboard = new wxMenu;
 996   menuClipboard->Append(wxID_COPY, _T("&Copy test image\tCtrl-C"));
 997   menuClipboard->Append(wxID_PASTE, _T("&Paste image\tCtrl-V"));
 998   menu_bar->Append(menuClipboard, _T("&Clipboard"));
 999 #endif // wxUSE_CLIPBOARD
1000
1001   SetMenuBar( menu_bar );
1002
1003 #if wxUSE_STATUSBAR
1004   CreateStatusBar(2);
1005   int widths[] = { -1, 100 };
1006   SetStatusWidths( 2, widths );
1007 #endif // wxUSE_STATUSBAR
1008
1009   m_canvas = new MyCanvas( this, wxID_ANY, wxPoint(0,0), wxSize(10,10) );
1010
1011   // 500 width * 2750 height
1012   m_canvas->SetScrollbars( 10, 10, 50, 275 );
1013 }
1014
1015 void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
1016 {
1017   Close( true );
1018 }
1019
1020 void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) )
1021 {
1022   (void)wxMessageBox( _T("wxImage demo\n")
1023                       _T("Robert Roebling (c) 1998,2000"),
1024                       _T("About wxImage Demo"), wxICON_INFORMATION | wxOK );
1025 }
1026
1027 void MyFrame::OnNewFrame( wxCommandEvent &WXUNUSED(event) )
1028 {
1029 #if wxUSE_FILEDLG
1030     wxString filename = wxFileSelector(_T("Select image file"));
1031     if ( !filename )
1032         return;
1033
1034     wxImage image;
1035     if ( !image.LoadFile(filename) )
1036     {
1037         wxLogError(_T("Couldn't load image from '%s'."), filename.c_str());
1038
1039         return;
1040     }
1041
1042     (new MyImageFrame(this, wxBitmap(image)))->Show();
1043 #endif // wxUSE_FILEDLG
1044 }
1045
1046 #ifdef wxHAVE_RAW_BITMAP
1047
1048 void MyFrame::OnTestRawBitmap( wxCommandEvent &WXUNUSED(event) )
1049 {
1050     (new MyRawBitmapFrame(this))->Show();
1051 }
1052
1053 #endif // wxHAVE_RAW_BITMAP
1054
1055 #if wxUSE_CLIPBOARD
1056
1057 void MyFrame::OnCopy(wxCommandEvent& WXUNUSED(event))
1058 {
1059     wxBitmapDataObject *dobjBmp = new wxBitmapDataObject;
1060     dobjBmp->SetBitmap(m_canvas->my_horse_png);
1061
1062     wxTheClipboard->Open();
1063
1064     if ( !wxTheClipboard->SetData(dobjBmp) )
1065     {
1066         wxLogError(_T("Failed to copy bitmap to clipboard"));
1067     }
1068
1069     wxTheClipboard->Close();
1070 }
1071
1072 void MyFrame::OnPaste(wxCommandEvent& WXUNUSED(event))
1073 {
1074     wxBitmapDataObject dobjBmp;
1075
1076     wxTheClipboard->Open();
1077     if ( !wxTheClipboard->GetData(dobjBmp) )
1078     {
1079         wxLogMessage(_T("No bitmap data in the clipboard"));
1080     }
1081     else
1082     {
1083         (new MyImageFrame(this, dobjBmp.GetBitmap()))->Show();
1084     }
1085     wxTheClipboard->Close();
1086 }
1087
1088 #endif // wxUSE_CLIPBOARD
1089
1090 //-----------------------------------------------------------------------------
1091 // MyApp
1092 //-----------------------------------------------------------------------------
1093
1094 bool MyApp::OnInit()
1095 {
1096 #if wxUSE_LIBPNG
1097   wxImage::AddHandler( new wxPNGHandler );
1098 #endif
1099
1100 #if wxUSE_LIBJPEG
1101   wxImage::AddHandler( new wxJPEGHandler );
1102 #endif
1103
1104 #if wxUSE_LIBTIFF
1105   wxImage::AddHandler( new wxTIFFHandler );
1106 #endif
1107
1108 #if wxUSE_GIF
1109   wxImage::AddHandler( new wxGIFHandler );
1110 #endif
1111
1112 #if wxUSE_PCX
1113   wxImage::AddHandler( new wxPCXHandler );
1114 #endif
1115
1116 #if wxUSE_PNM
1117   wxImage::AddHandler( new wxPNMHandler );
1118 #endif
1119
1120 #if wxUSE_XPM
1121   wxImage::AddHandler( new wxXPMHandler );
1122 #endif
1123
1124 #if wxUSE_ICO_CUR
1125   wxImage::AddHandler( new wxICOHandler );
1126   wxImage::AddHandler( new wxCURHandler );
1127   wxImage::AddHandler( new wxANIHandler );
1128 #endif
1129
1130   wxFrame *frame = new MyFrame();
1131   frame->Show( true );
1132
1133   return true;
1134 }