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 && !defined(__WXMOTIF_)
 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         data.UseAlpha();
 271
 272         wxRawBitmapIterator p(data);
 273
 274         p.Offset(BORDER, BORDER);
 275
 276         for ( int y = 0; y < REAL_SIZE; ++y )
 277         {
 278             wxRawBitmapIterator rowStart = p;
 279
 280             int r = y < REAL_SIZE/3 ? 255 : 0,
 281                 g = (REAL_SIZE/3 <= y) && (y < 2*(REAL_SIZE/3)) ? 255 : 0,
 282                 b = 2*(REAL_SIZE/3) <= y ? 255 : 0;
 283
 284             for ( int x = 0; x < REAL_SIZE; ++x )
 285             {
 286                 p.Red() = r;
 287                 p.Green() = g;
 288                 p.Blue() = b;
 289                 p.Alpha() = x;
 290
 291                 ++p; // same as p.OffsetX(1)
 292             }
 293
 294             p = rowStart;
 295             p.OffsetY(1);
 296         }
 297     }
 298
 299     void OnPaint(wxPaintEvent& WXUNUSED(event))
 300     {
 301         wxPaintDC dc( this );
 302         dc.DrawText(_T("This is alpha and raw bitmap test"), 0, BORDER);
 303         dc.DrawText(_T("This is alpha and raw bitmap test"), 0, SIZE/2 - BORDER);
 304         dc.DrawText(_T("This is alpha and raw bitmap test"), 0, SIZE - 2*BORDER);
 305         dc.DrawBitmap( m_bitmap, 0, 0, TRUE /* use mask */ );
 306     }
 307
 308 private:
 309     wxBitmap m_bitmap;
 310
 311     DECLARE_EVENT_TABLE()
 312 };
 313
 314 #endif // wxHAVE_RAW_BITMAP
 315
 316 // MyApp
 317
 318 class MyApp: public wxApp
 319 {
 320 public:
 321     virtual bool OnInit();
 322 };
 323
 324 // main program
 325
 326 IMPLEMENT_APP(MyApp)
 327
 328 // MyCanvas
 329
 330 IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxScrolledWindow)
 331
 332 BEGIN_EVENT_TABLE(MyImageFrame, wxFrame)
 333     EVT_ERASE_BACKGROUND(MyImageFrame::OnEraseBackground)
 334     EVT_PAINT(MyImageFrame::OnPaint)
 335     EVT_LEFT_DCLICK(MyImageFrame::OnSave)
 336 END_EVENT_TABLE()
 337
 338 #ifdef wxHAVE_RAW_BITMAP
 339
 340 BEGIN_EVENT_TABLE(MyRawBitmapFrame, wxFrame)
 341     EVT_PAINT(MyRawBitmapFrame::OnPaint)
 342 END_EVENT_TABLE()
 343
 344 #endif // wxHAVE_RAW_BITMAP
 345
 346 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
 347   EVT_PAINT(MyCanvas::OnPaint)
 348 END_EVENT_TABLE()
 349
 350 MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
 351                     const wxPoint &pos, const wxSize &size )
 352         : wxScrolledWindow( parent, id, pos, size, wxSUNKEN_BORDER )
 353 #if !defined(__WINDOWS__) || wxUSE_XPM_IN_MSW
 354           , m_bmpSmileXpm((const char **) smile_xpm)
 355           , m_iconSmileXpm((const char **) smile_xpm)
 356 #endif
 357 {
 358     my_horse_png = (wxBitmap*) NULL;
 359     my_horse_jpeg = (wxBitmap*) NULL;
 360     my_horse_gif = (wxBitmap*) NULL;
 361     my_horse_bmp = (wxBitmap*) NULL;
 362     my_horse_bmp2 = (wxBitmap*) NULL;
 363     my_horse_pcx = (wxBitmap*) NULL;
 364     my_horse_pnm = (wxBitmap*) NULL;
 365     my_horse_tiff = (wxBitmap*) NULL;
 366     my_horse_xpm = (wxBitmap*) NULL;
 367     my_horse_ico32 = (wxBitmap*) NULL;
 368     my_horse_ico16 = (wxBitmap*) NULL;
 369     my_horse_ico = (wxBitmap*) NULL;
 370     my_horse_cur = (wxBitmap*) NULL;
 371     my_horse_ani = (wxBitmap*) NULL;
 372
 373     my_smile_xbm = (wxBitmap*) NULL;
 374     my_square = (wxBitmap*) NULL;
 375     my_anti = (wxBitmap*) NULL;
 376
 377     m_ani_images = 0 ;
 378
 379     SetBackgroundColour(* wxWHITE);
 380
 381     wxBitmap bitmap( 100, 100 );
 382
 383     wxMemoryDC dc;
 384     dc.SelectObject( bitmap );
 385     dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) );
 386     dc.SetPen( *wxBLACK_PEN );
 387     dc.DrawRectangle( 0, 0, 100, 100 );
 388     dc.SetBrush( *wxWHITE_BRUSH );
 389     dc.DrawRectangle( 20, 20, 60, 60 );
 390     dc.SelectObject( wxNullBitmap );
 391
 392     // try to find the directory with our images
 393     wxString dir;
 394     if ( wxFile::Exists(wxT("./horse.png")) )
 395         dir = wxT("./");
 396     else if ( wxFile::Exists(wxT("../horse.png")) )
 397         dir = wxT("../");
 398     else
 399         wxLogWarning(wxT("Can't find image files in either '.' or '..'!"));
 400
 401     wxImage image = bitmap.ConvertToImage();
 402
 403 #if wxUSE_LIBPNG
 404     if ( !image.SaveFile( dir + _T("test.png"), wxBITMAP_TYPE_PNG ))
 405         wxLogError(wxT("Can't save file"));
 406
 407     image.Destroy();
 408
 409     image.LoadFile( dir + _T("test.png") );
 410     my_square = new wxBitmap( image );
 411
 412     image.Destroy();
 413
 414     if ( !image.LoadFile( dir + _T("horse.png")) )
 415         wxLogError(wxT("Can't load PNG image"));
 416     else
 417         my_horse_png = new wxBitmap( image );
 418 #endif // wxUSE_LIBPNG
 419
 420 #if wxUSE_LIBJPEG
 421     image.Destroy();
 422
 423     if ( !image.LoadFile( dir + _T("horse.jpg")) )
 424         wxLogError(wxT("Can't load JPG image"));
 425     else
 426         my_horse_jpeg = new wxBitmap( image );
 427 #endif // wxUSE_LIBJPEG
 428
 429 #if wxUSE_GIF
 430     image.Destroy();
 431
 432     if ( !image.LoadFile( dir + _T("horse.gif" )) )
 433         wxLogError(wxT("Can't load GIF image"));
 434     else
 435         my_horse_gif = new wxBitmap( image );
 436 #endif
 437
 438 #if wxUSE_PCX
 439     image.Destroy();
 440
 441     if ( !image.LoadFile( dir + _T("horse.pcx"), wxBITMAP_TYPE_PCX ) )
 442         wxLogError(wxT("Can't load PCX image"));
 443     else
 444         my_horse_pcx = new wxBitmap( image );
 445 #endif
 446
 447     image.Destroy();
 448
 449     if ( !image.LoadFile( dir + _T("horse.bmp"), wxBITMAP_TYPE_BMP ) )
 450         wxLogError(wxT("Can't load BMP image"));
 451     else
 452         my_horse_bmp = new wxBitmap( image );
 453
 454 #if wxUSE_XPM
 455     image.Destroy();
 456
 457     if ( !image.LoadFile( dir + _T("horse.xpm"), wxBITMAP_TYPE_XPM ) )
 458         wxLogError(wxT("Can't load XPM image"));
 459     else
 460         my_horse_xpm = new wxBitmap( image );
 461
 462     if ( !image.SaveFile( dir + _T("test.xpm"), wxBITMAP_TYPE_XPM ))
 463         wxLogError(wxT("Can't save file"));
 464 #endif
 465
 466 #if wxUSE_PNM
 467     image.Destroy();
 468
 469     if ( !image.LoadFile( dir + _T("horse.pnm"), wxBITMAP_TYPE_PNM ) )
 470         wxLogError(wxT("Can't load PNM image"));
 471     else
 472         my_horse_pnm = new wxBitmap( image );
 473 #endif
 474
 475 #if wxUSE_LIBTIFF
 476     image.Destroy();
 477
 478     if ( !image.LoadFile( dir + _T("horse.tif"), wxBITMAP_TYPE_TIF ) )
 479         wxLogError(wxT("Can't load TIFF image"));
 480     else
 481         my_horse_tiff = new wxBitmap( image );
 482 #endif
 483
 484     CreateAntiAliasedBitmap();
 485
 486     my_smile_xbm = new wxBitmap( (const char*)smile_bits, smile_width,
 487                                  smile_height, 1 );
 488
 489 #if !defined(__WINDOWS__) || wxUSE_XPM_IN_MSW
 490     // demonstrates XPM automatically using the mask when saving
 491     if ( m_bmpSmileXpm.Ok() )
 492         m_bmpSmileXpm.SaveFile(_T("saved.xpm"), wxBITMAP_TYPE_XPM);
 493 #endif
 494
 495 #if wxUSE_ICO_CUR
 496     image.Destroy();
 497
 498     if ( !image.LoadFile( dir + _T("horse.ico"), wxBITMAP_TYPE_ICO, 0 ) )
 499         wxLogError(wxT("Can't load first ICO image"));
 500     else
 501         my_horse_ico32 = new wxBitmap( image );
 502
 503     image.Destroy();
 504
 505     if ( !image.LoadFile( dir + _T("horse.ico"), wxBITMAP_TYPE_ICO, 1 ) )
 506         wxLogError(wxT("Can't load second ICO image"));
 507     else
 508         my_horse_ico16 = new wxBitmap( image );
 509
 510     image.Destroy();
 511
 512     if ( !image.LoadFile( dir + _T("horse.ico") ) )
 513         wxLogError(wxT("Can't load best ICO image"));
 514     else
 515         my_horse_ico = new wxBitmap( image );
 516
 517     image.Destroy();
 518
 519     if ( !image.LoadFile( dir + _T("horse.cur"), wxBITMAP_TYPE_CUR ) )
 520         wxLogError(wxT("Can't load best ICO image"));
 521     else
 522     {
 523         my_horse_cur = new wxBitmap( image );
 524         xH = 30 + image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X) ;
 525         yH = 2420 + image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y) ;
 526     }
 527
 528     m_ani_images = wxImage::GetImageCount ( dir + _T("horse3.ani"), wxBITMAP_TYPE_ANI );
 529     if (m_ani_images==0)
 530         wxLogError(wxT("No ANI-format images found"));
 531     else
 532         my_horse_ani = new wxBitmap [m_ani_images];
 533     int i ;
 534     for (i=0; i < m_ani_images; i++)
 535     {
 536         image.Destroy();
 537         if (!image.LoadFile( dir + _T("horse3.ani"), wxBITMAP_TYPE_ANI, i ))
 538         {
 539             wxString tmp = wxT("Can't load image number ");
 540             tmp << i ;
 541             wxLogError(tmp);
 542         }
 543         else
 544             my_horse_ani [i] = wxBitmap( image );
 545     }
 546 #endif // wxUSE_ICO_CUR
 547
 548     image.Destroy();
 549
 550     // test image loading from stream
 551     wxFile file(dir + _T("horse.bmp"));
 552     off_t len = file.Length();
 553     void *data = malloc(len);
 554     if ( file.Read(data, len) != len )
 555         wxLogError(_T("Reading bitmap file failed"));
 556     else
 557     {
 558         wxMemoryInputStream mis(data, len);
 559         if ( !image.LoadFile(mis) )
 560             wxLogError(wxT("Can't load BMP image from stream"));
 561         else
 562             my_horse_bmp2 = new wxBitmap( image );
 563     }
 564
 565     free(data);
 566 }
 567
 568 MyCanvas::~MyCanvas()
 569 {
 570     delete my_horse_pnm;
 571     delete my_horse_png;
 572     delete my_horse_jpeg;
 573     delete my_horse_gif;
 574     delete my_horse_bmp;
 575     delete my_horse_bmp2;
 576     delete my_horse_pcx;
 577     delete my_horse_tiff;
 578     delete my_horse_xpm;
 579     delete my_horse_ico32;
 580     delete my_horse_ico16;
 581     delete my_horse_ico;
 582     delete my_horse_cur;
 583     delete [] my_horse_ani;
 584     delete my_smile_xbm;
 585     delete my_square;
 586     delete my_anti;
 587 }
 588
 589 void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
 590 {
 591     wxPaintDC dc( this );
 592     PrepareDC( dc );
 593
 594     dc.DrawText( _T("Loaded image"), 30, 10 );
 595     if (my_square && my_square->Ok()) dc.DrawBitmap( *my_square, 30, 30 );
 596
 597     dc.DrawText( _T("Drawn directly"), 150, 10 );
 598     dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) );
 599     dc.SetPen( *wxBLACK_PEN );
 600     dc.DrawRectangle( 150, 30, 100, 100 );
 601     dc.SetBrush( *wxWHITE_BRUSH );
 602     dc.DrawRectangle( 170, 50, 60, 60 );
 603
 604     if (my_anti && my_anti->Ok())
 605         dc.DrawBitmap( *my_anti, 280, 30 );
 606
 607     dc.DrawText( _T("PNG handler"), 30, 135 );
 608     if (my_horse_png && my_horse_png->Ok())
 609     {
 610         dc.DrawBitmap( *my_horse_png, 30, 150 );
 611         wxRect rect(0,0,100,100);
 612         wxBitmap sub( my_horse_png->GetSubBitmap(rect) );
 613         dc.DrawText( _T("GetSubBitmap()"), 280, 190 );
 614         dc.DrawBitmap( sub, 280, 210 );
 615     }
 616
 617     dc.DrawText( _T("JPEG handler"), 30, 365 );
 618     if (my_horse_jpeg && my_horse_jpeg->Ok())
 619         dc.DrawBitmap( *my_horse_jpeg, 30, 380 );
 620
 621     dc.DrawText( _T("GIF handler"), 30, 595 );
 622     if (my_horse_gif && my_horse_gif->Ok())
 623         dc.DrawBitmap( *my_horse_gif, 30, 610 );
 624
 625     dc.DrawText( _T("PCX handler"), 30, 825 );
 626     if (my_horse_pcx && my_horse_pcx->Ok())
 627         dc.DrawBitmap( *my_horse_pcx, 30, 840 );
 628
 629     dc.DrawText( _T("BMP handler"), 30, 1055 );
 630     if (my_horse_bmp && my_horse_bmp->Ok())
 631         dc.DrawBitmap( *my_horse_bmp, 30, 1070 );
 632
 633     dc.DrawText( _T("BMP read from memory"), 280, 1055 );
 634     if (my_horse_bmp2 && my_horse_bmp2->Ok())
 635         dc.DrawBitmap( *my_horse_bmp2, 280, 1070 );
 636
 637     dc.DrawText( _T("PNM handler"), 30, 1285 );
 638     if (my_horse_pnm && my_horse_pnm->Ok())
 639         dc.DrawBitmap( *my_horse_pnm, 30, 1300 );
 640
 641     dc.DrawText( _T("TIFF handler"), 30, 1515 );
 642     if (my_horse_tiff && my_horse_tiff->Ok())
 643         dc.DrawBitmap( *my_horse_tiff, 30, 1530 );
 644
 645     dc.DrawText( _T("XPM handler"), 30, 1745 );
 646     if (my_horse_xpm && my_horse_xpm->Ok())
 647         dc.DrawBitmap( *my_horse_xpm, 30, 1760 );
 648
 649
 650     if (my_smile_xbm && my_smile_xbm->Ok())
 651     {
 652         dc.DrawText( _T("XBM bitmap"), 30, 1975 );
 653         dc.DrawText( _T("(green on red)"), 30, 1990 );
 654         dc.SetTextForeground( _T("GREEN") );
 655         dc.SetTextBackground( _T("RED") );
 656         dc.DrawBitmap( *my_smile_xbm, 30, 2010 );
 657
 658         dc.SetTextForeground( wxT("BLACK") );
 659         dc.DrawText( _T("After wxImage conversion"), 150, 1975 );
 660         dc.DrawText( _T("(red on white)"), 150, 1990 );
 661         dc.SetTextForeground( wxT("RED") );
 662         wxImage i = my_smile_xbm->ConvertToImage();
 663         i.SetMaskColour( 255, 255, 255 );
 664         i.Replace( 0, 0, 0,
 665                wxRED_PEN->GetColour().Red(),
 666                wxRED_PEN->GetColour().Green(),
 667                wxRED_PEN->GetColour().Blue() );
 668         dc.DrawBitmap( wxBitmap(i), 150, 2010, TRUE );
 669         dc.SetTextForeground( wxT("BLACK") );
 670     }
 671
 672
 673     wxBitmap mono( 60,50,1 );
 674     wxMemoryDC memdc;
 675     memdc.SelectObject( mono );
 676     memdc.SetPen( *wxBLACK_PEN );
 677     memdc.SetBrush( *wxWHITE_BRUSH );
 678     memdc.DrawRectangle( 0,0,60,50 );
 679     memdc.SetTextForeground( *wxBLACK );
 680     memdc.DrawText( _T("Hi!"), 5, 5 );
 681     memdc.SetBrush( *wxBLACK_BRUSH );
 682     memdc.DrawRectangle( 33,5,20,20 );
 683     memdc.SetPen( *wxRED_PEN );
 684     memdc.DrawLine( 5, 42, 50, 42 );
 685     memdc.SelectObject( wxNullBitmap );
 686
 687     if (mono.Ok())
 688     {
 689         dc.DrawText( _T("Mono bitmap"), 30, 2095 );
 690         dc.DrawText( _T("(red on green)"), 30, 2110 );
 691         dc.SetTextForeground( wxT("RED") );
 692         dc.SetTextBackground( wxT("GREEN") );
 693         dc.DrawBitmap( mono, 30, 2130 );
 694
 695         dc.SetTextForeground( wxT("BLACK") );
 696         dc.DrawText( _T("After wxImage conversion"), 150, 2095 );
 697         dc.DrawText( _T("(red on white)"), 150, 2110 );
 698         dc.SetTextForeground( wxT("RED") );
 699         wxImage i = mono.ConvertToImage();
 700         i.SetMaskColour( 255,255,255 );
 701         i.Replace( 0,0,0,
 702                wxRED_PEN->GetColour().Red(),
 703                wxRED_PEN->GetColour().Green(),
 704                wxRED_PEN->GetColour().Blue() );
 705         dc.DrawBitmap( wxBitmap(i), 150, 2130, TRUE );
 706         dc.SetTextForeground( wxT("BLACK") );
 707     }
 708
 709     dc.DrawText(_T("XPM bitmap"), 30, 2230);
 710     if ( m_bmpSmileXpm.Ok() )
 711     {
 712         dc.DrawBitmap(m_bmpSmileXpm, 30, 2250, TRUE);
 713     }
 714
 715     dc.DrawText(_T("XPM icon"), 150, 2230);
 716     if ( m_iconSmileXpm.Ok() )
 717     {
 718         dc.DrawIcon(m_iconSmileXpm, 150, 2250);
 719     }
 720
 721     dc.DrawText( _T("ICO handler (1st image)"), 30, 2290 );
 722     if (my_horse_ico32 && my_horse_ico32->Ok())
 723         dc.DrawBitmap( *my_horse_ico32, 30, 2330, TRUE );
 724
 725     dc.DrawText( _T("ICO handler (2nd image)"), 230, 2290 );
 726     if (my_horse_ico16 && my_horse_ico16->Ok())
 727         dc.DrawBitmap( *my_horse_ico16, 230, 2330, TRUE );
 728
 729     dc.DrawText( _T("ICO handler (best image)"), 430, 2290 );
 730     if (my_horse_ico && my_horse_ico->Ok())
 731         dc.DrawBitmap( *my_horse_ico, 430, 2330, TRUE );
 732
 733     dc.DrawText( _T("CUR handler"), 30, 2390 );
 734     if (my_horse_cur && my_horse_cur->Ok())
 735     {
 736         dc.DrawBitmap( *my_horse_cur, 30, 2420, TRUE );
 737         dc.SetPen (*wxRED_PEN);
 738         dc.DrawLine (xH-10,yH,xH+10,yH);
 739         dc.DrawLine (xH,yH-10,xH,yH+10);
 740     }
 741     dc.DrawText( _T("ANI handler"), 230, 2390 );
 742     int i ;
 743     for (i=0; i < m_ani_images; i ++)
 744         if (my_horse_ani[i].Ok())
 745         {
 746             dc.DrawBitmap( my_horse_ani[i], 230 + i * 2 * my_horse_ani[i].GetWidth() , 2420, TRUE );
 747         }
 748 }
 749
 750 void MyCanvas::CreateAntiAliasedBitmap()
 751 {
 752   wxBitmap bitmap( 300, 300 );
 753
 754   wxMemoryDC dc;
 755
 756   dc.SelectObject( bitmap );
 757
 758   dc.Clear();
 759
 760   dc.SetFont( wxFont( 24, wxDECORATIVE, wxNORMAL, wxNORMAL) );
 761   dc.SetTextForeground( wxT("RED") );
 762   dc.DrawText( _T("This is anti-aliased Text."), 20, 20 );
 763   dc.DrawText( _T("And a Rectangle."), 20, 60 );
 764
 765   dc.SetBrush( *wxRED_BRUSH );
 766   dc.SetPen( *wxTRANSPARENT_PEN );
 767   dc.DrawRoundedRectangle( 20, 100, 200, 180, 20 );
 768
 769   wxImage original= bitmap.ConvertToImage();
 770   wxImage anti( 150, 150 );
 771
 772   /* This is quite slow, but safe. Use wxImage::GetData() for speed instead. */
 773
 774   for (int y = 1; y < 149; y++)
 775     for (int x = 1; x < 149; x++)
 776     {
 777        int red = original.GetRed( x*2, y*2 ) +
 778                  original.GetRed( x*2-1, y*2 ) +
 779                  original.GetRed( x*2, y*2+1 ) +
 780                  original.GetRed( x*2+1, y*2+1 );
 781        red = red/4;
 782
 783        int green = original.GetGreen( x*2, y*2 ) +
 784                    original.GetGreen( x*2-1, y*2 ) +
 785                    original.GetGreen( x*2, y*2+1 ) +
 786                    original.GetGreen( x*2+1, y*2+1 );
 787        green = green/4;
 788
 789        int blue = original.GetBlue( x*2, y*2 ) +
 790                   original.GetBlue( x*2-1, y*2 ) +
 791                   original.GetBlue( x*2, y*2+1 ) +
 792                   original.GetBlue( x*2+1, y*2+1 );
 793        blue = blue/4;
 794        anti.SetRGB( x, y, red, green, blue );
 795     }
 796   my_anti = new wxBitmap(anti);
 797 }
 798
 799 // MyFrame
 800
 801 enum
 802 {
 803     ID_QUIT  = 108,
 804     ID_ABOUT,
 805     ID_NEW,
 806     ID_SHOWRAW
 807 };
 808
 809 IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )
 810
 811 BEGIN_EVENT_TABLE(MyFrame,wxFrame)
 812   EVT_MENU    (ID_ABOUT, MyFrame::OnAbout)
 813   EVT_MENU    (ID_QUIT,  MyFrame::OnQuit)
 814   EVT_MENU    (ID_NEW,  MyFrame::OnNewFrame)
 815 #ifdef wxHAVE_RAW_BITMAP
 816   EVT_MENU    (ID_SHOWRAW,  MyFrame::OnTestRawBitmap)
 817 #endif
 818
 819 #if wxUSE_CLIPBOARD && !defined(__WXMOTIF__)
 820     EVT_MENU(wxID_COPY, MyFrame::OnCopy)
 821     EVT_MENU(wxID_PASTE, MyFrame::OnPaste)
 822 #endif // wxUSE_CLIPBOARD
 823 END_EVENT_TABLE()
 824
 825 MyFrame::MyFrame()
 826        : wxFrame( (wxFrame *)NULL, -1, _T("wxImage sample"),
 827                   wxPoint(20,20), wxSize(470,360) )
 828 {
 829   wxMenuBar *menu_bar = new wxMenuBar();
 830
 831   wxMenu *menuImage = new wxMenu;
 832   menuImage->Append( ID_NEW, _T("&Show any image...\tCtrl-O"));
 833 #ifdef wxHAVE_RAW_BITMAP
 834   menuImage->Append( ID_SHOWRAW, _T("Test &raw bitmap...\tCtrl-R"));
 835 #endif
 836   menuImage->AppendSeparator();
 837   menuImage->Append( ID_ABOUT, _T("&About..."));
 838   menuImage->AppendSeparator();
 839   menuImage->Append( ID_QUIT, _T("E&xit\tCtrl-Q"));
 840   menu_bar->Append(menuImage, _T("&Image"));
 841
 842 #if wxUSE_CLIPBOARD && !defined(__WXMOTIF__)
 843   wxMenu *menuClipboard = new wxMenu;
 844   menuClipboard->Append(wxID_COPY, _T("&Copy test image\tCtrl-C"));
 845   menuClipboard->Append(wxID_PASTE, _T("&Paste image\tCtrl-V"));
 846   menu_bar->Append(menuClipboard, _T("&Clipboard"));
 847 #endif // wxUSE_CLIPBOARD
 848
 849   SetMenuBar( menu_bar );
 850
 851   CreateStatusBar(2);
 852   int widths[] = { -1, 100 };
 853   SetStatusWidths( 2, widths );
 854
 855   m_canvas = new MyCanvas( this, -1, wxPoint(0,0), wxSize(10,10) );
 856
 857   // 500 width * 2500 height
 858   m_canvas->SetScrollbars( 10, 10, 50, 250 );
 859 }
 860
 861 void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
 862 {
 863   Close( TRUE );
 864 }
 865
 866 void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) )
 867 {
 868   (void)wxMessageBox( _T("wxImage demo\n")
 869                       _T("Robert Roebling (c) 1998,2000"),
 870                       _T("About wxImage Demo"), wxICON_INFORMATION | wxOK );
 871 }
 872
 873 void MyFrame::OnNewFrame( wxCommandEvent &WXUNUSED(event) )
 874 {
 875     wxString filename = wxFileSelector(_T("Select image file"));
 876     if ( !filename )
 877         return;
 878
 879     wxImage image;
 880     if ( !image.LoadFile(filename) )
 881     {
 882         wxLogError(_T("Couldn't load image from '%s'."), filename.c_str());
 883
 884         return;
 885     }
 886
 887     (new MyImageFrame(this, wxBitmap(image)))->Show();
 888 }
 889
 890 #ifdef wxHAVE_RAW_BITMAP
 891
 892 void MyFrame::OnTestRawBitmap( wxCommandEvent &event )
 893 {
 894     (new MyRawBitmapFrame(this))->Show();
 895 }
 896
 897 #endif // wxHAVE_RAW_BITMAP
 898
 899 #if wxUSE_CLIPBOARD && !defined(__WXMOTIF__)
 900
 901 void MyFrame::OnCopy(wxCommandEvent& WXUNUSED(event))
 902 {
 903     wxBitmapDataObject *dobjBmp = new wxBitmapDataObject;
 904     dobjBmp->SetBitmap(*m_canvas->my_horse_png);
 905
 906     if ( !wxTheClipboard->SetData(dobjBmp) )
 907     {
 908         wxLogError(_T("Failed to copy bitmap to clipboard"));
 909     }
 910 }
 911
 912 void MyFrame::OnPaste(wxCommandEvent& WXUNUSED(event))
 913 {
 914     wxBitmapDataObject dobjBmp;
 915     if ( !wxTheClipboard->GetData(dobjBmp) )
 916     {
 917         wxLogMessage(_T("No bitmap data in the clipboard"));
 918     }
 919     else
 920     {
 921         (new MyImageFrame(this, dobjBmp.GetBitmap()))->Show();
 922     }
 923 }
 924
 925 #endif // wxUSE_CLIPBOARD
 926
 927 //-----------------------------------------------------------------------------
 928 // MyApp
 929 //-----------------------------------------------------------------------------
 930
 931 bool MyApp::OnInit()
 932 {
 933 #if wxUSE_LIBPNG
 934   wxImage::AddHandler( new wxPNGHandler );
 935 #endif
 936
 937 #if wxUSE_LIBJPEG
 938   wxImage::AddHandler( new wxJPEGHandler );
 939 #endif
 940
 941 #if wxUSE_LIBTIFF
 942   wxImage::AddHandler( new wxTIFFHandler );
 943 #endif
 944
 945 #if wxUSE_GIF
 946   wxImage::AddHandler( new wxGIFHandler );
 947 #endif
 948
 949 #if wxUSE_PCX
 950   wxImage::AddHandler( new wxPCXHandler );
 951 #endif
 952
 953 #if wxUSE_PNM
 954   wxImage::AddHandler( new wxPNMHandler );
 955 #endif
 956
 957 #if wxUSE_XPM
 958   wxImage::AddHandler( new wxXPMHandler );
 959 #endif
 960
 961 #if wxUSE_ICO_CUR
 962   wxImage::AddHandler( new wxICOHandler );
 963   wxImage::AddHandler( new wxCURHandler );
 964   wxImage::AddHandler( new wxANIHandler );
 965 #endif
 966
 967   wxFrame *frame = new MyFrame();
 968   frame->Show( TRUE );
 969
 970   return TRUE;
 971 }
 972