samples/image/image.cpp

   1 /*
   2  * Program: image
   3  *
   4  * Author: Robert Roebling
   5  *
   6  * Copyright: (C) 1998, Robert Roebling
   7  *
   8  */
   9
  10 // For compilers that support precompilation, includes "wx/wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #ifdef __BORLANDC__
  14 #pragma hdrstop
  15 #endif
  16
  17 #ifndef WX_PRECOMP
  18 #include "wx/wx.h"
  19 #endif
  20
  21 #include "wx/image.h"
  22 #include "wx/file.h"
  23 #include "wx/mstream.h"
  24 #include "wx/wfstream.h"
  25 #include "wx/quantize.h"
  26
  27 #if wxUSE_CLIPBOARD
  28     #include "wx/dataobj.h"
  29     #include "wx/clipbrd.h"
  30 #endif // wxUSE_CLIPBOARD
  31
  32 #include "smile.xbm"
  33
  34 #if !defined(__WINDOWS__) || wxUSE_XPM_IN_MSW
  35     #include "smile.xpm"
  36 #endif
  37
  38 #if defined(__WXMSW__)
  39     #define wxHAVE_RAW_BITMAP
  40 #endif
  41
  42 // derived classes
  43
  44 class MyFrame;
  45 class MyApp;
  46
  47 // MyCanvas
  48
  49 class MyCanvas: public wxScrolledWindow
  50 {
  51 public:
  52     MyCanvas() {}
  53     MyCanvas( wxWindow *parent, wxWindowID, const wxPoint &pos, const wxSize &size );
  54     ~MyCanvas();
  55     void OnPaint( wxPaintEvent &event );
  56     void CreateAntiAliasedBitmap();
  57
  58     wxBitmap  *my_horse_png;
  59     wxBitmap  *my_horse_jpeg;
  60     wxBitmap  *my_horse_gif;
  61     wxBitmap  *my_horse_bmp;
  62     wxBitmap  *my_horse_bmp2;
  63     wxBitmap  *my_horse_pcx;
  64     wxBitmap  *my_horse_pnm;
  65     wxBitmap  *my_horse_tiff;
  66     wxBitmap  *my_horse_xpm;
  67     wxBitmap  *my_horse_ico32;
  68     wxBitmap  *my_horse_ico16;
  69     wxBitmap  *my_horse_ico;
  70     wxBitmap  *my_horse_cur;
  71     wxBitmap  *my_horse_ani;
  72
  73     wxBitmap  *my_smile_xbm;
  74     wxBitmap  *my_square;
  75     wxBitmap  *my_anti;
  76
  77     int xH, yH ;
  78     int m_ani_images ;
  79
  80 protected:
  81     wxBitmap m_bmpSmileXpm;
  82     wxIcon   m_iconSmileXpm;
  83
  84 private:
  85     DECLARE_DYNAMIC_CLASS(MyCanvas)
  86     DECLARE_EVENT_TABLE()
  87 };
  88
  89
  90 const int nChoices = 8 ;
  91 static const wxString bppchoices[nChoices] =
  92 {
  93     _T("1 bpp color"),
  94     _T("1 bpp B&W"),
  95     _T("4 bpp color"),
  96     _T("8 bpp color"),
  97     _T("8 bpp greyscale"),
  98     _T("8 bpp red"),
  99     _T("8 bpp own palette"),
 100     _T("24 bpp")
 101 };
 102
 103 static const int bppvalues[nChoices] =
 104 {
 105     wxBMP_1BPP,
 106     wxBMP_1BPP_BW,
 107     wxBMP_4BPP,
 108     wxBMP_8BPP,
 109     wxBMP_8BPP_GREY,
 110     wxBMP_8BPP_RED,
 111     wxBMP_8BPP_PALETTE,
 112     wxBMP_24BPP
 113 };
 114
 115 // MyFrame
 116
 117
 118 class MyFrame: public wxFrame
 119 {
 120 public:
 121     MyFrame();
 122
 123     void OnAbout( wxCommandEvent &event );
 124     void OnNewFrame( wxCommandEvent &event );
 125 #ifdef wxHAVE_RAW_BITMAP
 126     void OnTestRawBitmap( wxCommandEvent &event );
 127 #endif // wxHAVE_RAW_BITMAP
 128     void OnQuit( wxCommandEvent &event );
 129
 130 #if wxUSE_CLIPBOARD
 131     void OnCopy(wxCommandEvent& event);
 132     void OnPaste(wxCommandEvent& event);
 133 #endif // wxUSE_CLIPBOARD
 134
 135     MyCanvas         *m_canvas;
 136
 137 private:
 138     DECLARE_DYNAMIC_CLASS(MyFrame)
 139     DECLARE_EVENT_TABLE()
 140 };
 141
 142 class MyImageFrame : public wxFrame
 143 {
 144 public:
 145     MyImageFrame(wxFrame *parent, const wxBitmap& bitmap)
 146         : wxFrame(parent, -1, _T("Double click to save"),
 147                   wxDefaultPosition, wxDefaultSize,
 148                   wxCAPTION | wxSYSTEM_MENU | wxCLOSE_BOX),
 149                   m_bitmap(bitmap)
 150     {
 151         SetClientSize(bitmap.GetWidth(), bitmap.GetHeight());
 152     }
 153
 154     void OnEraseBackground(wxEraseEvent& WXUNUSED(event))
 155     {
 156         // do nothing here to be able to see how transparent images are shown
 157     }
 158
 159     void OnPaint(wxPaintEvent& WXUNUSED(event))
 160     {
 161         wxPaintDC dc( this );
 162         dc.DrawBitmap( m_bitmap, 0, 0, TRUE /* use mask */ );
 163     }
 164
 165     void OnSave(wxMouseEvent& WXUNUSED(event))
 166     {
 167         wxImage image = m_bitmap.ConvertToImage();
 168
 169         int bppselection = wxGetSingleChoiceIndex(_T("Set BMP BPP"),
 170                                                   _T("Set BMP BPP"),
 171                                                   nChoices,
 172                                                   bppchoices,
 173                                                   this);
 174         if ( bppselection == -1 )
 175         {
 176             // cancelled
 177             return;
 178         }
 179
 180         image.SetOption(wxIMAGE_OPTION_BMP_FORMAT, bppvalues[bppselection]);
 181
 182         wxString deffilename = bppchoices[bppselection];
 183         deffilename.Replace(wxT(" "), wxT("_"));
 184         deffilename += wxT(".bmp");
 185         wxString savefilename = wxFileSelector( wxT("Save Image"),
 186                                                 wxT(""),
 187                                                 deffilename,
 188                                                 (const wxChar *)NULL,
 189                                             wxT("BMP files (*.bmp)|*.bmp|")
 190                                             wxT("PNG files (*.png)|*.png|")
 191                                             wxT("JPEG files (*.jpg)|*.jpg|")
 192                                             wxT("GIF files (*.gif)|*.gif|")
 193                                             wxT("TIFF files (*.tif)|*.tif|")
 194                                             wxT("PCX files (*.pcx)|*.pcx|")
 195                                             wxT("ICO files (*.ico)|*.ico|")
 196                                             wxT("CUR files (*.cur)|*.cur"),
 197                                                 wxSAVE);
 198
 199         if ( savefilename.empty() )
 200             return;
 201
 202         if ( image.GetOptionInt(wxIMAGE_OPTION_BMP_FORMAT) == wxBMP_8BPP_PALETTE )
 203         {
 204             unsigned char *cmap = new unsigned char [256];
 205             for ( int i = 0; i < 256; i++ )
 206                 cmap[i] = i;
 207             image.SetPalette(wxPalette(256, cmap, cmap, cmap));
 208
 209             delete cmap;
 210         }
 211
 212         bool loaded;
 213         wxString extension = savefilename.AfterLast('.').Lower();
 214
 215         if (extension == _T("cur"))
 216         {
 217             image.Rescale(32,32);
 218             image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_X, 0);
 219             image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y, 0);
 220             // This shows how you can save an image with explicitly
 221             // specified image format:
 222             loaded = image.SaveFile(savefilename, wxBITMAP_TYPE_CUR);
 223         }
 224         else
 225         {
 226             // This one guesses image format from filename extension
 227             // (it may fail if the extension is not recognized):
 228             loaded = image.SaveFile(savefilename);
 229         }
 230
 231         if ( !loaded )
 232             wxMessageBox(_T("No handler for this file type."),
 233                          _T("File was not saved"),
 234                          wxOK|wxCENTRE, this);
 235     }
 236
 237 private:
 238     wxBitmap m_bitmap;
 239
 240     DECLARE_EVENT_TABLE()
 241 };
 242
 243 #ifdef wxHAVE_RAW_BITMAP
 244
 245 #include "wx/rawbmp.h"
 246
 247 class MyRawBitmapFrame : public wxFrame
 248 {
 249 public:
 250     enum
 251     {
 252         BORDER = 15,
 253         SIZE = 150,
 254         REAL_SIZE = SIZE - 2*BORDER
 255     };
 256
 257     MyRawBitmapFrame(wxFrame *parent)
 258         : wxFrame(parent, -1, _T("Raw bitmaps (how exciting)")),
 259           m_bitmap(SIZE, SIZE, 32)
 260     {
 261         SetClientSize(SIZE, SIZE);
 262
 263         wxRawBitmapData data(m_bitmap);
 264         if ( !data )
 265         {
 266             wxLogError(_T("Failed to gain raw access to bitmap data"));
 267             return;
 268         }
 269
 270         wxRawBitmapIterator p(data);
 271
 272         p.Offset(BORDER, BORDER);
 273
 274         for ( int y = 0; y < REAL_SIZE; ++y )
 275         {
 276             wxRawBitmapIterator rowStart = p;
 277
 278             int r = y < REAL_SIZE/3 ? 255 : 0,
 279                 g = (REAL_SIZE/3 <= y) && (y < 2*(REAL_SIZE/3)) ? 255 : 0,
 280                 b = 2*(REAL_SIZE/3) <= y ? 255 : 0;
 281
 282             for ( int x = 0; x < REAL_SIZE; ++x )
 283             {
 284                 p.Red() = r;
 285                 p.Green() = g;
 286                 p.Blue() = b;
 287                 p.Alpha() = x;
 288
 289                 ++p; // same as p.OffsetX(1)
 290             }
 291
 292             p = rowStart;
 293             p.OffsetY(1);
 294         }
 295     }
 296
 297     void OnPaint(wxPaintEvent& WXUNUSED(event))
 298     {
 299         wxPaintDC dc( this );
 300         dc.DrawText(_T("This is alpha and raw bitmap test"), 0, BORDER);
 301         dc.DrawText(_T("This is alpha and raw bitmap test"), 0, SIZE/2 - BORDER);
 302         dc.DrawText(_T("This is alpha and raw bitmap test"), 0, SIZE - 2*BORDER);
 303         dc.DrawBitmap( m_bitmap, 0, 0, TRUE /* use mask */ );
 304     }
 305
 306 private:
 307     wxBitmap m_bitmap;
 308
 309     DECLARE_EVENT_TABLE()
 310 };
 311
 312 #endif // wxHAVE_RAW_BITMAP
 313
 314 // MyApp
 315
 316 class MyApp: public wxApp
 317 {
 318 public:
 319     virtual bool OnInit();
 320 };
 321
 322 // main program
 323
 324 IMPLEMENT_APP(MyApp)
 325
 326 // MyCanvas
 327
 328 IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxScrolledWindow)
 329
 330 BEGIN_EVENT_TABLE(MyImageFrame, wxFrame)
 331     EVT_ERASE_BACKGROUND(MyImageFrame::OnEraseBackground)
 332     EVT_PAINT(MyImageFrame::OnPaint)
 333     EVT_LEFT_DCLICK(MyImageFrame::OnSave)
 334 END_EVENT_TABLE()
 335
 336 #ifdef wxHAVE_RAW_BITMAP
 337
 338 BEGIN_EVENT_TABLE(MyRawBitmapFrame, wxFrame)
 339     EVT_PAINT(MyRawBitmapFrame::OnPaint)
 340 END_EVENT_TABLE()
 341
 342 #endif // wxHAVE_RAW_BITMAP
 343
 344 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
 345   EVT_PAINT(MyCanvas::OnPaint)
 346 END_EVENT_TABLE()
 347
 348 MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
 349                     const wxPoint &pos, const wxSize &size )
 350         : wxScrolledWindow( parent, id, pos, size, wxSUNKEN_BORDER )
 351 #if !defined(__WINDOWS__) || wxUSE_XPM_IN_MSW
 352           , m_bmpSmileXpm((const char **) smile_xpm)
 353           , m_iconSmileXpm((const char **) smile_xpm)
 354 #endif
 355 {
 356     my_horse_png = (wxBitmap*) NULL;
 357     my_horse_jpeg = (wxBitmap*) NULL;
 358     my_horse_gif = (wxBitmap*) NULL;
 359     my_horse_bmp = (wxBitmap*) NULL;
 360     my_horse_bmp2 = (wxBitmap*) NULL;
 361     my_horse_pcx = (wxBitmap*) NULL;
 362     my_horse_pnm = (wxBitmap*) NULL;
 363     my_horse_tiff = (wxBitmap*) NULL;
 364     my_horse_xpm = (wxBitmap*) NULL;
 365     my_horse_ico32 = (wxBitmap*) NULL;
 366     my_horse_ico16 = (wxBitmap*) NULL;
 367     my_horse_ico = (wxBitmap*) NULL;
 368     my_horse_cur = (wxBitmap*) NULL;
 369     my_horse_ani = (wxBitmap*) NULL;
 370
 371     my_smile_xbm = (wxBitmap*) NULL;
 372     my_square = (wxBitmap*) NULL;
 373     my_anti = (wxBitmap*) NULL;
 374
 375     m_ani_images = 0 ;
 376
 377     SetBackgroundColour(* wxWHITE);
 378
 379     wxBitmap bitmap( 100, 100 );
 380
 381     wxMemoryDC dc;
 382     dc.SelectObject( bitmap );
 383     dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) );
 384     dc.SetPen( *wxBLACK_PEN );
 385     dc.DrawRectangle( 0, 0, 100, 100 );
 386     dc.SetBrush( *wxWHITE_BRUSH );
 387     dc.DrawRectangle( 20, 20, 60, 60 );
 388     dc.SelectObject( wxNullBitmap );
 389
 390     // try to find the directory with our images
 391     wxString dir;
 392     if ( wxFile::Exists(wxT("./horse.png")) )
 393         dir = wxT("./");
 394     else if ( wxFile::Exists(wxT("../horse.png")) )
 395         dir = wxT("../");
 396     else
 397         wxLogWarning(wxT("Can't find image files in either '.' or '..'!"));
 398
 399     wxImage image = bitmap.ConvertToImage();
 400
 401 #if wxUSE_LIBPNG
 402     if ( !image.SaveFile( dir + _T("test.png"), wxBITMAP_TYPE_PNG ))
 403         wxLogError(wxT("Can't save file"));
 404
 405     image.Destroy();
 406
 407     image.LoadFile( dir + _T("test.png") );
 408     my_square = new wxBitmap( image );
 409
 410     image.Destroy();
 411
 412     if ( !image.LoadFile( dir + _T("horse.png")) )
 413         wxLogError(wxT("Can't load PNG image"));
 414     else
 415         my_horse_png = new wxBitmap( image );
 416 #endif // wxUSE_LIBPNG
 417
 418 #if wxUSE_LIBJPEG
 419     image.Destroy();
 420
 421     if ( !image.LoadFile( dir + _T("horse.jpg")) )
 422         wxLogError(wxT("Can't load JPG image"));
 423     else
 424         my_horse_jpeg = new wxBitmap( image );
 425 #endif // wxUSE_LIBJPEG
 426
 427 #if wxUSE_GIF
 428     image.Destroy();
 429
 430     if ( !image.LoadFile( dir + _T("horse.gif" )) )
 431         wxLogError(wxT("Can't load GIF image"));
 432     else
 433         my_horse_gif = new wxBitmap( image );
 434 #endif
 435
 436 #if wxUSE_PCX
 437     image.Destroy();
 438
 439     if ( !image.LoadFile( dir + _T("horse.pcx"), wxBITMAP_TYPE_PCX ) )
 440         wxLogError(wxT("Can't load PCX image"));
 441     else
 442         my_horse_pcx = new wxBitmap( image );
 443 #endif
 444
 445     image.Destroy();
 446
 447     if ( !image.LoadFile( dir + _T("horse.bmp"), wxBITMAP_TYPE_BMP ) )
 448         wxLogError(wxT("Can't load BMP image"));
 449     else
 450         my_horse_bmp = new wxBitmap( image );
 451
 452 #if wxUSE_XPM
 453     image.Destroy();
 454
 455     if ( !image.LoadFile( dir + _T("horse.xpm"), wxBITMAP_TYPE_XPM ) )
 456         wxLogError(wxT("Can't load XPM image"));
 457     else
 458         my_horse_xpm = new wxBitmap( image );
 459
 460     if ( !image.SaveFile( dir + _T("test.xpm"), wxBITMAP_TYPE_XPM ))
 461         wxLogError(wxT("Can't save file"));
 462 #endif
 463
 464 #if wxUSE_PNM
 465     image.Destroy();
 466
 467     if ( !image.LoadFile( dir + _T("horse.pnm"), wxBITMAP_TYPE_PNM ) )
 468         wxLogError(wxT("Can't load PNM image"));
 469     else
 470         my_horse_pnm = new wxBitmap( image );
 471 #endif
 472
 473 #if wxUSE_LIBTIFF
 474     image.Destroy();
 475
 476     if ( !image.LoadFile( dir + _T("horse.tif"), wxBITMAP_TYPE_TIF ) )
 477         wxLogError(wxT("Can't load TIFF image"));
 478     else
 479         my_horse_tiff = new wxBitmap( image );
 480 #endif
 481
 482     CreateAntiAliasedBitmap();
 483
 484     my_smile_xbm = new wxBitmap( (const char*)smile_bits, smile_width,
 485                                  smile_height, 1 );
 486
 487 #if !defined(__WINDOWS__) || wxUSE_XPM_IN_MSW
 488     // demonstrates XPM automatically using the mask when saving
 489     if ( m_bmpSmileXpm.Ok() )
 490         m_bmpSmileXpm.SaveFile(_T("saved.xpm"), wxBITMAP_TYPE_XPM);
 491 #endif
 492
 493 #if wxUSE_ICO_CUR
 494     image.Destroy();
 495
 496     if ( !image.LoadFile( dir + _T("horse.ico"), wxBITMAP_TYPE_ICO, 0 ) )
 497         wxLogError(wxT("Can't load first ICO image"));
 498     else
 499         my_horse_ico32 = new wxBitmap( image );
 500
 501     image.Destroy();
 502
 503     if ( !image.LoadFile( dir + _T("horse.ico"), wxBITMAP_TYPE_ICO, 1 ) )
 504         wxLogError(wxT("Can't load second ICO image"));
 505     else
 506         my_horse_ico16 = new wxBitmap( image );
 507
 508     image.Destroy();
 509
 510     if ( !image.LoadFile( dir + _T("horse.ico") ) )
 511         wxLogError(wxT("Can't load best ICO image"));
 512     else
 513         my_horse_ico = new wxBitmap( image );
 514
 515     image.Destroy();
 516
 517     if ( !image.LoadFile( dir + _T("horse.cur"), wxBITMAP_TYPE_CUR ) )
 518         wxLogError(wxT("Can't load best ICO image"));
 519     else
 520     {
 521         my_horse_cur = new wxBitmap( image );
 522         xH = 30 + image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X) ;
 523         yH = 2420 + image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y) ;
 524     }
 525
 526     m_ani_images = wxImage::GetImageCount ( dir + _T("horse3.ani"), wxBITMAP_TYPE_ANI );
 527     if (m_ani_images==0)
 528         wxLogError(wxT("No ANI-format images found"));
 529     else
 530         my_horse_ani = new wxBitmap [m_ani_images];
 531     int i ;
 532     for (i=0; i < m_ani_images; i++)
 533     {
 534         image.Destroy();
 535         if (!image.LoadFile( dir + _T("horse3.ani"), wxBITMAP_TYPE_ANI, i ))
 536         {
 537             wxString tmp = wxT("Can't load image number ");
 538             tmp << i ;
 539             wxLogError(tmp);
 540         }
 541         else
 542             my_horse_ani [i] = wxBitmap( image );
 543     }
 544 #endif // wxUSE_ICO_CUR
 545
 546     image.Destroy();
 547
 548     // test image loading from stream
 549     wxFile file(dir + _T("horse.bmp"));
 550     off_t len = file.Length();
 551     void *data = malloc(len);
 552     if ( file.Read(data, len) != len )
 553         wxLogError(_T("Reading bitmap file failed"));
 554     else
 555     {
 556         wxMemoryInputStream mis(data, len);
 557         if ( !image.LoadFile(mis) )
 558             wxLogError(wxT("Can't load BMP image from stream"));
 559         else
 560             my_horse_bmp2 = new wxBitmap( image );
 561     }
 562
 563     free(data);
 564 }
 565
 566 MyCanvas::~MyCanvas()
 567 {
 568     delete my_horse_pnm;
 569     delete my_horse_png;
 570     delete my_horse_jpeg;
 571     delete my_horse_gif;
 572     delete my_horse_bmp;
 573     delete my_horse_bmp2;
 574     delete my_horse_pcx;
 575     delete my_horse_tiff;
 576     delete my_horse_xpm;
 577     delete my_horse_ico32;
 578     delete my_horse_ico16;
 579     delete my_horse_ico;
 580     delete my_horse_cur;
 581     delete [] my_horse_ani;
 582     delete my_smile_xbm;
 583     delete my_square;
 584     delete my_anti;
 585 }
 586
 587 void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
 588 {
 589     wxPaintDC dc( this );
 590     PrepareDC( dc );
 591
 592     dc.DrawText( _T("Loaded image"), 30, 10 );
 593     if (my_square && my_square->Ok()) dc.DrawBitmap( *my_square, 30, 30 );
 594
 595     dc.DrawText( _T("Drawn directly"), 150, 10 );
 596     dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) );
 597     dc.SetPen( *wxBLACK_PEN );
 598     dc.DrawRectangle( 150, 30, 100, 100 );
 599     dc.SetBrush( *wxWHITE_BRUSH );
 600     dc.DrawRectangle( 170, 50, 60, 60 );
 601
 602     if (my_anti && my_anti->Ok())
 603         dc.DrawBitmap( *my_anti, 280, 30 );
 604
 605     dc.DrawText( _T("PNG handler"), 30, 135 );
 606     if (my_horse_png && my_horse_png->Ok())
 607     {
 608         dc.DrawBitmap( *my_horse_png, 30, 150 );
 609         wxRect rect(0,0,100,100);
 610         wxBitmap sub( my_horse_png->GetSubBitmap(rect) );
 611         dc.DrawText( _T("GetSubBitmap()"), 280, 190 );
 612         dc.DrawBitmap( sub, 280, 210 );
 613     }
 614
 615     dc.DrawText( _T("JPEG handler"), 30, 365 );
 616     if (my_horse_jpeg && my_horse_jpeg->Ok())
 617         dc.DrawBitmap( *my_horse_jpeg, 30, 380 );
 618
 619     dc.DrawText( _T("GIF handler"), 30, 595 );
 620     if (my_horse_gif && my_horse_gif->Ok())
 621         dc.DrawBitmap( *my_horse_gif, 30, 610 );
 622
 623     dc.DrawText( _T("PCX handler"), 30, 825 );
 624     if (my_horse_pcx && my_horse_pcx->Ok())
 625         dc.DrawBitmap( *my_horse_pcx, 30, 840 );
 626
 627     dc.DrawText( _T("BMP handler"), 30, 1055 );
 628     if (my_horse_bmp && my_horse_bmp->Ok())
 629         dc.DrawBitmap( *my_horse_bmp, 30, 1070 );
 630
 631     dc.DrawText( _T("BMP read from memory"), 280, 1055 );
 632     if (my_horse_bmp2 && my_horse_bmp2->Ok())
 633         dc.DrawBitmap( *my_horse_bmp2, 280, 1070 );
 634
 635     dc.DrawText( _T("PNM handler"), 30, 1285 );
 636     if (my_horse_pnm && my_horse_pnm->Ok())
 637         dc.DrawBitmap( *my_horse_pnm, 30, 1300 );
 638
 639     dc.DrawText( _T("TIFF handler"), 30, 1515 );
 640     if (my_horse_tiff && my_horse_tiff->Ok())
 641         dc.DrawBitmap( *my_horse_tiff, 30, 1530 );
 642
 643     dc.DrawText( _T("XPM handler"), 30, 1745 );
 644     if (my_horse_xpm && my_horse_xpm->Ok())
 645         dc.DrawBitmap( *my_horse_xpm, 30, 1760 );
 646
 647
 648     if (my_smile_xbm && my_smile_xbm->Ok())
 649     {
 650         dc.DrawText( _T("XBM bitmap"), 30, 1975 );
 651         dc.DrawText( _T("(green on red)"), 30, 1990 );
 652         dc.SetTextForeground( _T("GREEN") );
 653         dc.SetTextBackground( _T("RED") );
 654         dc.DrawBitmap( *my_smile_xbm, 30, 2010 );
 655
 656         dc.SetTextForeground( wxT("BLACK") );
 657         dc.DrawText( _T("After wxImage conversion"), 150, 1975 );
 658         dc.DrawText( _T("(red on white)"), 150, 1990 );
 659         dc.SetTextForeground( wxT("RED") );
 660         wxImage i = my_smile_xbm->ConvertToImage();
 661         i.SetMaskColour( 255, 255, 255 );
 662         i.Replace( 0, 0, 0,
 663                wxRED_PEN->GetColour().Red(),
 664                wxRED_PEN->GetColour().Green(),
 665                wxRED_PEN->GetColour().Blue() );
 666         dc.DrawBitmap( wxBitmap(i), 150, 2010, TRUE );
 667         dc.SetTextForeground( wxT("BLACK") );
 668     }
 669
 670
 671     wxBitmap mono( 60,50,1 );
 672     wxMemoryDC memdc;
 673     memdc.SelectObject( mono );
 674     memdc.SetPen( *wxBLACK_PEN );
 675     memdc.SetBrush( *wxWHITE_BRUSH );
 676     memdc.DrawRectangle( 0,0,60,50 );
 677     memdc.SetTextForeground( *wxBLACK );
 678     memdc.DrawText( _T("Hi!"), 5, 5 );
 679     memdc.SetBrush( *wxBLACK_BRUSH );
 680     memdc.DrawRectangle( 33,5,20,20 );
 681     memdc.SetPen( *wxRED_PEN );
 682     memdc.DrawLine( 5, 42, 50, 42 );
 683     memdc.SelectObject( wxNullBitmap );
 684
 685     if (mono.Ok())
 686     {
 687         dc.DrawText( _T("Mono bitmap"), 30, 2095 );
 688         dc.DrawText( _T("(red on green)"), 30, 2110 );
 689         dc.SetTextForeground( wxT("RED") );
 690         dc.SetTextBackground( wxT("GREEN") );
 691         dc.DrawBitmap( mono, 30, 2130 );
 692
 693         dc.SetTextForeground( wxT("BLACK") );
 694         dc.DrawText( _T("After wxImage conversion"), 150, 2095 );
 695         dc.DrawText( _T("(red on white)"), 150, 2110 );
 696         dc.SetTextForeground( wxT("RED") );
 697         wxImage i = mono.ConvertToImage();
 698         i.SetMaskColour( 255,255,255 );
 699         i.Replace( 0,0,0,
 700                wxRED_PEN->GetColour().Red(),
 701                wxRED_PEN->GetColour().Green(),
 702                wxRED_PEN->GetColour().Blue() );
 703         dc.DrawBitmap( wxBitmap(i), 150, 2130, TRUE );
 704         dc.SetTextForeground( wxT("BLACK") );
 705     }
 706
 707     dc.DrawText(_T("XPM bitmap"), 30, 2230);
 708     if ( m_bmpSmileXpm.Ok() )
 709     {
 710         dc.DrawBitmap(m_bmpSmileXpm, 30, 2250, TRUE);
 711     }
 712
 713     dc.DrawText(_T("XPM icon"), 150, 2230);
 714     if ( m_iconSmileXpm.Ok() )
 715     {
 716         dc.DrawIcon(m_iconSmileXpm, 150, 2250);
 717     }
 718
 719     dc.DrawText( _T("ICO handler (1st image)"), 30, 2290 );
 720     if (my_horse_ico32 && my_horse_ico32->Ok())
 721         dc.DrawBitmap( *my_horse_ico32, 30, 2330, TRUE );
 722
 723     dc.DrawText( _T("ICO handler (2nd image)"), 230, 2290 );
 724     if (my_horse_ico16 && my_horse_ico16->Ok())
 725         dc.DrawBitmap( *my_horse_ico16, 230, 2330, TRUE );
 726
 727     dc.DrawText( _T("ICO handler (best image)"), 430, 2290 );
 728     if (my_horse_ico && my_horse_ico->Ok())
 729         dc.DrawBitmap( *my_horse_ico, 430, 2330, TRUE );
 730
 731     dc.DrawText( _T("CUR handler"), 30, 2390 );
 732     if (my_horse_cur && my_horse_cur->Ok())
 733     {
 734         dc.DrawBitmap( *my_horse_cur, 30, 2420, TRUE );
 735         dc.SetPen (*wxRED_PEN);
 736         dc.DrawLine (xH-10,yH,xH+10,yH);
 737         dc.DrawLine (xH,yH-10,xH,yH+10);
 738     }
 739     dc.DrawText( _T("ANI handler"), 230, 2390 );
 740     int i ;
 741     for (i=0; i < m_ani_images; i ++)
 742         if (my_horse_ani[i].Ok())
 743         {
 744             dc.DrawBitmap( my_horse_ani[i], 230 + i * 2 * my_horse_ani[i].GetWidth() , 2420, TRUE );
 745         }
 746 }
 747
 748 void MyCanvas::CreateAntiAliasedBitmap()
 749 {
 750   wxBitmap bitmap( 300, 300 );
 751
 752   wxMemoryDC dc;
 753
 754   dc.SelectObject( bitmap );
 755
 756   dc.Clear();
 757
 758   dc.SetFont( wxFont( 24, wxDECORATIVE, wxNORMAL, wxNORMAL) );
 759   dc.SetTextForeground( wxT("RED") );
 760   dc.DrawText( _T("This is anti-aliased Text."), 20, 20 );
 761   dc.DrawText( _T("And a Rectangle."), 20, 60 );
 762
 763   dc.SetBrush( *wxRED_BRUSH );
 764   dc.SetPen( *wxTRANSPARENT_PEN );
 765   dc.DrawRoundedRectangle( 20, 100, 200, 180, 20 );
 766
 767   wxImage original= bitmap.ConvertToImage();
 768   wxImage anti( 150, 150 );
 769
 770   /* This is quite slow, but safe. Use wxImage::GetData() for speed instead. */
 771
 772   for (int y = 1; y < 149; y++)
 773     for (int x = 1; x < 149; x++)
 774     {
 775        int red = original.GetRed( x*2, y*2 ) +
 776                  original.GetRed( x*2-1, y*2 ) +
 777                  original.GetRed( x*2, y*2+1 ) +
 778                  original.GetRed( x*2+1, y*2+1 );
 779        red = red/4;
 780
 781        int green = original.GetGreen( x*2, y*2 ) +
 782                    original.GetGreen( x*2-1, y*2 ) +
 783                    original.GetGreen( x*2, y*2+1 ) +
 784                    original.GetGreen( x*2+1, y*2+1 );
 785        green = green/4;
 786
 787        int blue = original.GetBlue( x*2, y*2 ) +
 788                   original.GetBlue( x*2-1, y*2 ) +
 789                   original.GetBlue( x*2, y*2+1 ) +
 790                   original.GetBlue( x*2+1, y*2+1 );
 791        blue = blue/4;
 792        anti.SetRGB( x, y, red, green, blue );
 793     }
 794   my_anti = new wxBitmap(anti);
 795 }
 796
 797 // MyFrame
 798
 799 enum
 800 {
 801     ID_QUIT  = 108,
 802     ID_ABOUT,
 803     ID_NEW,
 804     ID_SHOWRAW
 805 };
 806
 807 IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )
 808
 809 BEGIN_EVENT_TABLE(MyFrame,wxFrame)
 810   EVT_MENU    (ID_ABOUT, MyFrame::OnAbout)
 811   EVT_MENU    (ID_QUIT,  MyFrame::OnQuit)
 812   EVT_MENU    (ID_NEW,  MyFrame::OnNewFrame)
 813 #ifdef wxHAVE_RAW_BITMAP
 814   EVT_MENU    (ID_SHOWRAW,  MyFrame::OnTestRawBitmap)
 815 #endif
 816
 817 #if wxUSE_CLIPBOARD
 818     EVT_MENU(wxID_COPY, MyFrame::OnCopy)
 819     EVT_MENU(wxID_PASTE, MyFrame::OnPaste)
 820 #endif // wxUSE_CLIPBOARD
 821 END_EVENT_TABLE()
 822
 823 MyFrame::MyFrame()
 824        : wxFrame( (wxFrame *)NULL, -1, _T("wxImage sample"),
 825                   wxPoint(20,20), wxSize(470,360) )
 826 {
 827   wxMenuBar *menu_bar = new wxMenuBar();
 828
 829   wxMenu *menuImage = new wxMenu;
 830   menuImage->Append( ID_NEW, _T("&Show any image...\tCtrl-O"));
 831 #ifdef wxHAVE_RAW_BITMAP
 832   menuImage->Append( ID_SHOWRAW, _T("Test &raw bitmap...\tCtrl-R"));
 833 #endif
 834   menuImage->AppendSeparator();
 835   menuImage->Append( ID_ABOUT, _T("&About..."));
 836   menuImage->AppendSeparator();
 837   menuImage->Append( ID_QUIT, _T("E&xit\tCtrl-Q"));
 838   menu_bar->Append(menuImage, _T("&Image"));
 839
 840 #if wxUSE_CLIPBOARD
 841   wxMenu *menuClipboard = new wxMenu;
 842   menuClipboard->Append(wxID_COPY, _T("&Copy test image\tCtrl-C"));
 843   menuClipboard->Append(wxID_PASTE, _T("&Paste image\tCtrl-V"));
 844   menu_bar->Append(menuClipboard, _T("&Clipboard"));
 845 #endif // wxUSE_CLIPBOARD
 846
 847   SetMenuBar( menu_bar );
 848
 849   CreateStatusBar(2);
 850   int widths[] = { -1, 100 };
 851   SetStatusWidths( 2, widths );
 852
 853   m_canvas = new MyCanvas( this, -1, wxPoint(0,0), wxSize(10,10) );
 854
 855   // 500 width * 2500 height
 856   m_canvas->SetScrollbars( 10, 10, 50, 250 );
 857 }
 858
 859 void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
 860 {
 861   Close( TRUE );
 862 }
 863
 864 void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) )
 865 {
 866   (void)wxMessageBox( _T("wxImage demo\n")
 867                       _T("Robert Roebling (c) 1998,2000"),
 868                       _T("About wxImage Demo"), wxICON_INFORMATION | wxOK );
 869 }
 870
 871 void MyFrame::OnNewFrame( wxCommandEvent &WXUNUSED(event) )
 872 {
 873     wxString filename = wxFileSelector(_T("Select image file"));
 874     if ( !filename )
 875         return;
 876
 877     wxImage image;
 878     if ( !image.LoadFile(filename) )
 879     {
 880         wxLogError(_T("Couldn't load image from '%s'."), filename.c_str());
 881
 882         return;
 883     }
 884
 885     (new MyImageFrame(this, wxBitmap(image)))->Show();
 886 }
 887
 888 #ifdef wxHAVE_RAW_BITMAP
 889
 890 void MyFrame::OnTestRawBitmap( wxCommandEvent &event )
 891 {
 892     (new MyRawBitmapFrame(this))->Show();
 893 }
 894
 895 #endif // wxHAVE_RAW_BITMAP
 896
 897 #if wxUSE_CLIPBOARD
 898
 899 void MyFrame::OnCopy(wxCommandEvent& WXUNUSED(event))
 900 {
 901     wxBitmapDataObject *dobjBmp = new wxBitmapDataObject;
 902     dobjBmp->SetBitmap(*m_canvas->my_horse_png);
 903
 904     if ( !wxTheClipboard->SetData(dobjBmp) )
 905     {
 906         wxLogError(_T("Failed to copy bitmap to clipboard"));
 907     }
 908 }
 909
 910 void MyFrame::OnPaste(wxCommandEvent& WXUNUSED(event))
 911 {
 912     wxBitmapDataObject dobjBmp;
 913     if ( !wxTheClipboard->GetData(dobjBmp) )
 914     {
 915         wxLogMessage(_T("No bitmap data in the clipboard"));
 916     }
 917     else
 918     {
 919         (new MyImageFrame(this, dobjBmp.GetBitmap()))->Show();
 920     }
 921 }
 922
 923 #endif // wxUSE_CLIPBOARD
 924
 925 //-----------------------------------------------------------------------------
 926 // MyApp
 927 //-----------------------------------------------------------------------------
 928
 929 bool MyApp::OnInit()
 930 {
 931 #if wxUSE_LIBPNG
 932   wxImage::AddHandler( new wxPNGHandler );
 933 #endif
 934
 935 #if wxUSE_LIBJPEG
 936   wxImage::AddHandler( new wxJPEGHandler );
 937 #endif
 938
 939 #if wxUSE_LIBTIFF
 940   wxImage::AddHandler( new wxTIFFHandler );
 941 #endif
 942
 943 #if wxUSE_GIF
 944   wxImage::AddHandler( new wxGIFHandler );
 945 #endif
 946
 947 #if wxUSE_PCX
 948   wxImage::AddHandler( new wxPCXHandler );
 949 #endif
 950
 951 #if wxUSE_PNM
 952   wxImage::AddHandler( new wxPNMHandler );
 953 #endif
 954
 955 #if wxUSE_XPM
 956   wxImage::AddHandler( new wxXPMHandler );
 957 #endif
 958
 959 #if wxUSE_ICO_CUR
 960   wxImage::AddHandler( new wxICOHandler );
 961   wxImage::AddHandler( new wxCURHandler );
 962   wxImage::AddHandler( new wxANIHandler );
 963 #endif
 964
 965   wxFrame *frame = new MyFrame();
 966   frame->Show( TRUE );
 967
 968   return TRUE;
 969 }
 970