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 #include "wx/rawbmp.h"
  38
  39
  40 // derived classes
  41
  42 class MyFrame;
  43 class MyApp;
  44
  45 // MyCanvas
  46
  47 class MyCanvas: public wxScrolledWindow
  48 {
  49 public:
  50     MyCanvas() {}
  51     MyCanvas( wxWindow *parent, wxWindowID, const wxPoint &pos, const wxSize &size );
  52     ~MyCanvas();
  53     void OnPaint( wxPaintEvent &event );
  54     void CreateAntiAliasedBitmap();
  55
  56     wxBitmap  *my_horse_png;
  57     wxBitmap  *my_horse_jpeg;
  58     wxBitmap  *my_horse_gif;
  59     wxBitmap  *my_horse_bmp;
  60     wxBitmap  *my_horse_bmp2;
  61     wxBitmap  *my_horse_pcx;
  62     wxBitmap  *my_horse_pnm;
  63     wxBitmap  *my_horse_tiff;
  64     wxBitmap  *my_horse_xpm;
  65     wxBitmap  *my_horse_ico32;
  66     wxBitmap  *my_horse_ico16;
  67     wxBitmap  *my_horse_ico;
  68     wxBitmap  *my_horse_cur;
  69     wxBitmap  *my_horse_ani;
  70
  71     wxBitmap  *my_smile_xbm;
  72     wxBitmap  *my_square;
  73     wxBitmap  *my_anti;
  74
  75     int xH, yH ;
  76     int m_ani_images ;
  77
  78 protected:
  79     wxBitmap m_bmpSmileXpm;
  80     wxIcon   m_iconSmileXpm;
  81
  82 private:
  83     DECLARE_DYNAMIC_CLASS(MyCanvas)
  84     DECLARE_EVENT_TABLE()
  85 };
  86
  87
  88 const int nChoices = 8 ;
  89 static const wxString bppchoices[nChoices] =
  90 {
  91     _T("1 bpp color"),
  92     _T("1 bpp B&W"),
  93     _T("4 bpp color"),
  94     _T("8 bpp color"),
  95     _T("8 bpp greyscale"),
  96     _T("8 bpp red"),
  97     _T("8 bpp own palette"),
  98     _T("24 bpp")
  99 };
 100
 101 static const int bppvalues[nChoices] =
 102 {
 103     wxBMP_1BPP,
 104     wxBMP_1BPP_BW,
 105     wxBMP_4BPP,
 106     wxBMP_8BPP,
 107     wxBMP_8BPP_GREY,
 108     wxBMP_8BPP_RED,
 109     wxBMP_8BPP_PALETTE,
 110     wxBMP_24BPP
 111 };
 112
 113 // MyFrame
 114
 115
 116 class MyFrame: public wxFrame
 117 {
 118 public:
 119     MyFrame();
 120
 121     void OnAbout( wxCommandEvent &event );
 122     void OnNewFrame( wxCommandEvent &event );
 123 #ifdef wxHAVE_RAW_BITMAP
 124     void OnTestRawBitmap( wxCommandEvent &event );
 125 #endif // wxHAVE_RAW_BITMAP
 126     void OnQuit( wxCommandEvent &event );
 127
 128 #if wxUSE_CLIPBOARD
 129     void OnCopy(wxCommandEvent& event);
 130     void OnPaste(wxCommandEvent& event);
 131 #endif // wxUSE_CLIPBOARD
 132
 133     MyCanvas         *m_canvas;
 134
 135 private:
 136     DECLARE_DYNAMIC_CLASS(MyFrame)
 137     DECLARE_EVENT_TABLE()
 138 };
 139
 140 class MyImageFrame : public wxFrame
 141 {
 142 public:
 143     MyImageFrame(wxFrame *parent, const wxBitmap& bitmap)
 144         : wxFrame(parent, -1, _T("Double click to save"),
 145                   wxDefaultPosition, wxDefaultSize,
 146                   wxCAPTION | wxSYSTEM_MENU | wxCLOSE_BOX),
 147                   m_bitmap(bitmap)
 148     {
 149         SetClientSize(bitmap.GetWidth(), bitmap.GetHeight());
 150     }
 151
 152     void OnEraseBackground(wxEraseEvent& WXUNUSED(event))
 153     {
 154         // do nothing here to be able to see how transparent images are shown
 155     }
 156
 157     void OnPaint(wxPaintEvent& WXUNUSED(event))
 158     {
 159         wxPaintDC dc( this );
 160         dc.DrawBitmap( m_bitmap, 0, 0, TRUE /* use mask */ );
 161     }
 162
 163     void OnSave(wxMouseEvent& WXUNUSED(event))
 164     {
 165         wxImage image = m_bitmap.ConvertToImage();
 166
 167         int bppselection = wxGetSingleChoiceIndex(_T("Set BMP BPP"),
 168                                                   _T("Set BMP BPP"),
 169                                                   nChoices,
 170                                                   bppchoices,
 171                                                   this);
 172         if ( bppselection == -1 )
 173         {
 174             // cancelled
 175             return;
 176         }
 177
 178         image.SetOption(wxIMAGE_OPTION_BMP_FORMAT, bppvalues[bppselection]);
 179
 180         wxString deffilename = bppchoices[bppselection];
 181         deffilename.Replace(wxT(" "), wxT("_"));
 182         deffilename += wxT(".bmp");
 183         wxString savefilename = wxFileSelector( wxT("Save Image"),
 184                                                 wxT(""),
 185                                                 deffilename,
 186                                                 (const wxChar *)NULL,
 187                                             wxT("BMP files (*.bmp)|*.bmp|")
 188                                             wxT("PNG files (*.png)|*.png|")
 189                                             wxT("JPEG files (*.jpg)|*.jpg|")
 190                                             wxT("GIF files (*.gif)|*.gif|")
 191                                             wxT("TIFF files (*.tif)|*.tif|")
 192                                             wxT("PCX files (*.pcx)|*.pcx|")
 193                                             wxT("ICO files (*.ico)|*.ico|")
 194                                             wxT("CUR files (*.cur)|*.cur"),
 195                                                 wxSAVE);
 196
 197         if ( savefilename.empty() )
 198             return;
 199
 200         if ( image.GetOptionInt(wxIMAGE_OPTION_BMP_FORMAT) == wxBMP_8BPP_PALETTE )
 201         {
 202             unsigned char *cmap = new unsigned char [256];
 203             for ( int i = 0; i < 256; i++ )
 204                 cmap[i] = i;
 205             image.SetPalette(wxPalette(256, cmap, cmap, cmap));
 206
 207             delete cmap;
 208         }
 209
 210         bool loaded;
 211         wxString extension = savefilename.AfterLast('.').Lower();
 212
 213         if (extension == _T("cur"))
 214         {
 215             image.Rescale(32,32);
 216             image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_X, 0);
 217             image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y, 0);
 218             // This shows how you can save an image with explicitly
 219             // specified image format:
 220             loaded = image.SaveFile(savefilename, wxBITMAP_TYPE_CUR);
 221         }
 222         else
 223         {
 224             // This one guesses image format from filename extension
 225             // (it may fail if the extension is not recognized):
 226             loaded = image.SaveFile(savefilename);
 227         }
 228
 229         if ( !loaded )
 230             wxMessageBox(_T("No handler for this file type."),
 231                          _T("File was not saved"),
 232                          wxOK|wxCENTRE, this);
 233     }
 234
 235 private:
 236     wxBitmap m_bitmap;
 237
 238     DECLARE_EVENT_TABLE()
 239 };
 240
 241 #ifdef wxHAVE_RAW_BITMAP
 242
 243 #include "wx/rawbmp.h"
 244
 245 class MyRawBitmapFrame : public wxFrame
 246 {
 247 public:
 248     enum
 249     {
 250         BORDER = 15,
 251         SIZE = 150,
 252         REAL_SIZE = SIZE - 2*BORDER
 253     };
 254
 255     MyRawBitmapFrame(wxFrame *parent)
 256         : wxFrame(parent, -1, _T("Raw bitmaps (how exciting)")),
 257           m_bitmap(SIZE, SIZE, 32)
 258     {
 259         SetClientSize(SIZE, SIZE);
 260
 261         wxAlphaPixelData data(m_bitmap,
 262                               wxPoint(BORDER, BORDER),
 263                               wxSize(REAL_SIZE, REAL_SIZE));
 264         if ( !data )
 265         {
 266             wxLogError(_T("Failed to gain raw access to bitmap data"));
 267             return;
 268         }
 269
 270         data.UseAlpha();
 271
 272         wxAlphaPixelData::Iterator p(data);
 273
 274         for ( int y = 0; y < REAL_SIZE; ++y )
 275         {
 276             wxAlphaPixelData::Iterator 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*255.)/REAL_SIZE;
 288
 289                 ++p; // same as p.OffsetX(1)
 290             }
 291
 292             p = rowStart;
 293             p.OffsetY(data, 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     if ( 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     if ( file.IsOpened() )
 551     {
 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
 569 MyCanvas::~MyCanvas()
 570 {
 571     delete my_horse_pnm;
 572     delete my_horse_png;
 573     delete my_horse_jpeg;
 574     delete my_horse_gif;
 575     delete my_horse_bmp;
 576     delete my_horse_bmp2;
 577     delete my_horse_pcx;
 578     delete my_horse_tiff;
 579     delete my_horse_xpm;
 580     delete my_horse_ico32;
 581     delete my_horse_ico16;
 582     delete my_horse_ico;
 583     delete my_horse_cur;
 584     delete [] my_horse_ani;
 585     delete my_smile_xbm;
 586     delete my_square;
 587     delete my_anti;
 588 }
 589
 590 void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
 591 {
 592     wxPaintDC dc( this );
 593     PrepareDC( dc );
 594
 595     dc.DrawText( _T("Loaded image"), 30, 10 );
 596     if (my_square && my_square->Ok()) dc.DrawBitmap( *my_square, 30, 30 );
 597
 598     dc.DrawText( _T("Drawn directly"), 150, 10 );
 599     dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) );
 600     dc.SetPen( *wxBLACK_PEN );
 601     dc.DrawRectangle( 150, 30, 100, 100 );
 602     dc.SetBrush( *wxWHITE_BRUSH );
 603     dc.DrawRectangle( 170, 50, 60, 60 );
 604
 605     if (my_anti && my_anti->Ok())
 606         dc.DrawBitmap( *my_anti, 280, 30 );
 607
 608     dc.DrawText( _T("PNG handler"), 30, 135 );
 609     if (my_horse_png && my_horse_png->Ok())
 610     {
 611         dc.DrawBitmap( *my_horse_png, 30, 150 );
 612         wxRect rect(0,0,100,100);
 613         wxBitmap sub( my_horse_png->GetSubBitmap(rect) );
 614         dc.DrawText( _T("GetSubBitmap()"), 280, 190 );
 615         dc.DrawBitmap( sub, 280, 210 );
 616     }
 617
 618     dc.DrawText( _T("JPEG handler"), 30, 365 );
 619     if (my_horse_jpeg && my_horse_jpeg->Ok())
 620         dc.DrawBitmap( *my_horse_jpeg, 30, 380 );
 621
 622     dc.DrawText( _T("GIF handler"), 30, 595 );
 623     if (my_horse_gif && my_horse_gif->Ok())
 624         dc.DrawBitmap( *my_horse_gif, 30, 610 );
 625
 626     dc.DrawText( _T("PCX handler"), 30, 825 );
 627     if (my_horse_pcx && my_horse_pcx->Ok())
 628         dc.DrawBitmap( *my_horse_pcx, 30, 840 );
 629
 630     dc.DrawText( _T("BMP handler"), 30, 1055 );
 631     if (my_horse_bmp && my_horse_bmp->Ok())
 632         dc.DrawBitmap( *my_horse_bmp, 30, 1070 );
 633
 634     dc.DrawText( _T("BMP read from memory"), 280, 1055 );
 635     if (my_horse_bmp2 && my_horse_bmp2->Ok())
 636         dc.DrawBitmap( *my_horse_bmp2, 280, 1070 );
 637
 638     dc.DrawText( _T("PNM handler"), 30, 1285 );
 639     if (my_horse_pnm && my_horse_pnm->Ok())
 640         dc.DrawBitmap( *my_horse_pnm, 30, 1300 );
 641
 642     dc.DrawText( _T("TIFF handler"), 30, 1515 );
 643     if (my_horse_tiff && my_horse_tiff->Ok())
 644         dc.DrawBitmap( *my_horse_tiff, 30, 1530 );
 645
 646     dc.DrawText( _T("XPM handler"), 30, 1745 );
 647     if (my_horse_xpm && my_horse_xpm->Ok())
 648         dc.DrawBitmap( *my_horse_xpm, 30, 1760 );
 649
 650
 651     if (my_smile_xbm && my_smile_xbm->Ok())
 652     {
 653         dc.DrawText( _T("XBM bitmap"), 30, 1975 );
 654         dc.DrawText( _T("(green on red)"), 30, 1990 );
 655         dc.SetTextForeground( _T("GREEN") );
 656         dc.SetTextBackground( _T("RED") );
 657         dc.DrawBitmap( *my_smile_xbm, 30, 2010 );
 658
 659         dc.SetTextForeground( wxT("BLACK") );
 660         dc.DrawText( _T("After wxImage conversion"), 150, 1975 );
 661         dc.DrawText( _T("(red on white)"), 150, 1990 );
 662         dc.SetTextForeground( wxT("RED") );
 663         wxImage i = my_smile_xbm->ConvertToImage();
 664         i.SetMaskColour( 255, 255, 255 );
 665         i.Replace( 0, 0, 0,
 666                wxRED_PEN->GetColour().Red(),
 667                wxRED_PEN->GetColour().Green(),
 668                wxRED_PEN->GetColour().Blue() );
 669         dc.DrawBitmap( wxBitmap(i), 150, 2010, TRUE );
 670         dc.SetTextForeground( wxT("BLACK") );
 671     }
 672
 673
 674     wxBitmap mono( 60,50,1 );
 675     wxMemoryDC memdc;
 676     memdc.SelectObject( mono );
 677     memdc.SetPen( *wxBLACK_PEN );
 678     memdc.SetBrush( *wxWHITE_BRUSH );
 679     memdc.DrawRectangle( 0,0,60,50 );
 680     memdc.SetTextForeground( *wxBLACK );
 681     memdc.DrawText( _T("Hi!"), 5, 5 );
 682     memdc.SetBrush( *wxBLACK_BRUSH );
 683     memdc.DrawRectangle( 33,5,20,20 );
 684     memdc.SetPen( *wxRED_PEN );
 685     memdc.DrawLine( 5, 42, 50, 42 );
 686     memdc.SelectObject( wxNullBitmap );
 687
 688     if (mono.Ok())
 689     {
 690         dc.DrawText( _T("Mono bitmap"), 30, 2095 );
 691         dc.DrawText( _T("(red on green)"), 30, 2110 );
 692         dc.SetTextForeground( wxT("RED") );
 693         dc.SetTextBackground( wxT("GREEN") );
 694         dc.DrawBitmap( mono, 30, 2130 );
 695
 696         dc.SetTextForeground( wxT("BLACK") );
 697         dc.DrawText( _T("After wxImage conversion"), 150, 2095 );
 698         dc.DrawText( _T("(red on white)"), 150, 2110 );
 699         dc.SetTextForeground( wxT("RED") );
 700         wxImage i = mono.ConvertToImage();
 701         i.SetMaskColour( 255,255,255 );
 702         i.Replace( 0,0,0,
 703                wxRED_PEN->GetColour().Red(),
 704                wxRED_PEN->GetColour().Green(),
 705                wxRED_PEN->GetColour().Blue() );
 706         dc.DrawBitmap( wxBitmap(i), 150, 2130, TRUE );
 707         dc.SetTextForeground( wxT("BLACK") );
 708     }
 709
 710     dc.DrawText(_T("XPM bitmap"), 30, 2230);
 711     if ( m_bmpSmileXpm.Ok() )
 712     {
 713         dc.DrawBitmap(m_bmpSmileXpm, 30, 2250, TRUE);
 714     }
 715
 716     dc.DrawText(_T("XPM icon"), 150, 2230);
 717     if ( m_iconSmileXpm.Ok() )
 718     {
 719         dc.DrawIcon(m_iconSmileXpm, 150, 2250);
 720     }
 721
 722     dc.DrawText( _T("ICO handler (1st image)"), 30, 2290 );
 723     if (my_horse_ico32 && my_horse_ico32->Ok())
 724         dc.DrawBitmap( *my_horse_ico32, 30, 2330, TRUE );
 725
 726     dc.DrawText( _T("ICO handler (2nd image)"), 230, 2290 );
 727     if (my_horse_ico16 && my_horse_ico16->Ok())
 728         dc.DrawBitmap( *my_horse_ico16, 230, 2330, TRUE );
 729
 730     dc.DrawText( _T("ICO handler (best image)"), 430, 2290 );
 731     if (my_horse_ico && my_horse_ico->Ok())
 732         dc.DrawBitmap( *my_horse_ico, 430, 2330, TRUE );
 733
 734     dc.DrawText( _T("CUR handler"), 30, 2390 );
 735     if (my_horse_cur && my_horse_cur->Ok())
 736     {
 737         dc.DrawBitmap( *my_horse_cur, 30, 2420, TRUE );
 738         dc.SetPen (*wxRED_PEN);
 739         dc.DrawLine (xH-10,yH,xH+10,yH);
 740         dc.DrawLine (xH,yH-10,xH,yH+10);
 741     }
 742     dc.DrawText( _T("ANI handler"), 230, 2390 );
 743     int i ;
 744     for (i=0; i < m_ani_images; i ++)
 745         if (my_horse_ani[i].Ok())
 746         {
 747             dc.DrawBitmap( my_horse_ani[i], 230 + i * 2 * my_horse_ani[i].GetWidth() , 2420, TRUE );
 748         }
 749 }
 750
 751 void MyCanvas::CreateAntiAliasedBitmap()
 752 {
 753   wxBitmap bitmap( 300, 300 );
 754
 755   wxMemoryDC dc;
 756
 757   dc.SelectObject( bitmap );
 758
 759   dc.Clear();
 760
 761   dc.SetFont( wxFont( 24, wxDECORATIVE, wxNORMAL, wxNORMAL) );
 762   dc.SetTextForeground( wxT("RED") );
 763   dc.DrawText( _T("This is anti-aliased Text."), 20, 20 );
 764   dc.DrawText( _T("And a Rectangle."), 20, 60 );
 765
 766   dc.SetBrush( *wxRED_BRUSH );
 767   dc.SetPen( *wxTRANSPARENT_PEN );
 768   dc.DrawRoundedRectangle( 20, 100, 200, 180, 20 );
 769
 770   wxImage original= bitmap.ConvertToImage();
 771   wxImage anti( 150, 150 );
 772
 773   /* This is quite slow, but safe. Use wxImage::GetData() for speed instead. */
 774
 775   for (int y = 1; y < 149; y++)
 776     for (int x = 1; x < 149; x++)
 777     {
 778        int red = original.GetRed( x*2, y*2 ) +
 779                  original.GetRed( x*2-1, y*2 ) +
 780                  original.GetRed( x*2, y*2+1 ) +
 781                  original.GetRed( x*2+1, y*2+1 );
 782        red = red/4;
 783
 784        int green = original.GetGreen( x*2, y*2 ) +
 785                    original.GetGreen( x*2-1, y*2 ) +
 786                    original.GetGreen( x*2, y*2+1 ) +
 787                    original.GetGreen( x*2+1, y*2+1 );
 788        green = green/4;
 789
 790        int blue = original.GetBlue( x*2, y*2 ) +
 791                   original.GetBlue( x*2-1, y*2 ) +
 792                   original.GetBlue( x*2, y*2+1 ) +
 793                   original.GetBlue( x*2+1, y*2+1 );
 794        blue = blue/4;
 795        anti.SetRGB( x, y, red, green, blue );
 796     }
 797   my_anti = new wxBitmap(anti);
 798 }
 799
 800 // MyFrame
 801
 802 enum
 803 {
 804     ID_QUIT  = 108,
 805     ID_ABOUT,
 806     ID_NEW,
 807     ID_SHOWRAW
 808 };
 809
 810 IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )
 811
 812 BEGIN_EVENT_TABLE(MyFrame,wxFrame)
 813   EVT_MENU    (ID_ABOUT, MyFrame::OnAbout)
 814   EVT_MENU    (ID_QUIT,  MyFrame::OnQuit)
 815   EVT_MENU    (ID_NEW,  MyFrame::OnNewFrame)
 816 #ifdef wxHAVE_RAW_BITMAP
 817   EVT_MENU    (ID_SHOWRAW,  MyFrame::OnTestRawBitmap)
 818 #endif
 819
 820 #if wxUSE_CLIPBOARD
 821     EVT_MENU(wxID_COPY, MyFrame::OnCopy)
 822     EVT_MENU(wxID_PASTE, MyFrame::OnPaste)
 823 #endif // wxUSE_CLIPBOARD
 824 END_EVENT_TABLE()
 825
 826 MyFrame::MyFrame()
 827        : wxFrame( (wxFrame *)NULL, -1, _T("wxImage sample"),
 828                   wxPoint(20,20), wxSize(470,360) )
 829 {
 830   wxMenuBar *menu_bar = new wxMenuBar();
 831
 832   wxMenu *menuImage = new wxMenu;
 833   menuImage->Append( ID_NEW, _T("&Show any image...\tCtrl-O"));
 834
 835 #ifdef wxHAVE_RAW_BITMAP
 836   menuImage->Append( ID_SHOWRAW, _T("Test &raw bitmap...\tCtrl-R"));
 837 #endif
 838   menuImage->AppendSeparator();
 839   menuImage->Append( ID_ABOUT, _T("&About..."));
 840   menuImage->AppendSeparator();
 841   menuImage->Append( ID_QUIT, _T("E&xit\tCtrl-Q"));
 842   menu_bar->Append(menuImage, _T("&Image"));
 843
 844 #if wxUSE_CLIPBOARD
 845   wxMenu *menuClipboard = new wxMenu;
 846   menuClipboard->Append(wxID_COPY, _T("&Copy test image\tCtrl-C"));
 847   menuClipboard->Append(wxID_PASTE, _T("&Paste image\tCtrl-V"));
 848   menu_bar->Append(menuClipboard, _T("&Clipboard"));
 849 #endif // wxUSE_CLIPBOARD
 850
 851   SetMenuBar( menu_bar );
 852
 853   CreateStatusBar(2);
 854   int widths[] = { -1, 100 };
 855   SetStatusWidths( 2, widths );
 856
 857   m_canvas = new MyCanvas( this, -1, wxPoint(0,0), wxSize(10,10) );
 858
 859   // 500 width * 2500 height
 860   m_canvas->SetScrollbars( 10, 10, 50, 250 );
 861 }
 862
 863 void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
 864 {
 865   Close( TRUE );
 866 }
 867
 868 void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) )
 869 {
 870   (void)wxMessageBox( _T("wxImage demo\n")
 871                       _T("Robert Roebling (c) 1998,2000"),
 872                       _T("About wxImage Demo"), wxICON_INFORMATION | wxOK );
 873 }
 874
 875 void MyFrame::OnNewFrame( wxCommandEvent &WXUNUSED(event) )
 876 {
 877     wxString filename = wxFileSelector(_T("Select image file"));
 878     if ( !filename )
 879         return;
 880
 881     wxImage image;
 882     if ( !image.LoadFile(filename) )
 883     {
 884         wxLogError(_T("Couldn't load image from '%s'."), filename.c_str());
 885
 886         return;
 887     }
 888
 889     (new MyImageFrame(this, wxBitmap(image)))->Show();
 890 }
 891
 892 #ifdef wxHAVE_RAW_BITMAP
 893
 894 void MyFrame::OnTestRawBitmap( wxCommandEvent &event )
 895 {
 896     (new MyRawBitmapFrame(this))->Show();
 897 }
 898
 899 #endif // wxHAVE_RAW_BITMAP
 900
 901 #if wxUSE_CLIPBOARD
 902
 903 void MyFrame::OnCopy(wxCommandEvent& WXUNUSED(event))
 904 {
 905     wxBitmapDataObject *dobjBmp = new wxBitmapDataObject;
 906     dobjBmp->SetBitmap(*m_canvas->my_horse_png);
 907
 908     wxTheClipboard->Open();
 909
 910     if ( !wxTheClipboard->SetData(dobjBmp) )
 911     {
 912         wxLogError(_T("Failed to copy bitmap to clipboard"));
 913     }
 914
 915     wxTheClipboard->Close();
 916 }
 917
 918 void MyFrame::OnPaste(wxCommandEvent& WXUNUSED(event))
 919 {
 920     wxBitmapDataObject dobjBmp;
 921
 922     wxTheClipboard->Open();
 923     if ( !wxTheClipboard->GetData(dobjBmp) )
 924     {
 925         wxLogMessage(_T("No bitmap data in the clipboard"));
 926     }
 927     else
 928     {
 929         (new MyImageFrame(this, dobjBmp.GetBitmap()))->Show();
 930     }
 931     wxTheClipboard->Close();
 932 }
 933
 934 #endif // wxUSE_CLIPBOARD
 935
 936 //-----------------------------------------------------------------------------
 937 // MyApp
 938 //-----------------------------------------------------------------------------
 939
 940 bool MyApp::OnInit()
 941 {
 942 #if wxUSE_LIBPNG
 943   wxImage::AddHandler( new wxPNGHandler );
 944 #endif
 945
 946 #if wxUSE_LIBJPEG
 947   wxImage::AddHandler( new wxJPEGHandler );
 948 #endif
 949
 950 #if wxUSE_LIBTIFF
 951   wxImage::AddHandler( new wxTIFFHandler );
 952 #endif
 953
 954 #if wxUSE_GIF
 955   wxImage::AddHandler( new wxGIFHandler );
 956 #endif
 957
 958 #if wxUSE_PCX
 959   wxImage::AddHandler( new wxPCXHandler );
 960 #endif
 961
 962 #if wxUSE_PNM
 963   wxImage::AddHandler( new wxPNMHandler );
 964 #endif
 965
 966 #if wxUSE_XPM
 967   wxImage::AddHandler( new wxXPMHandler );
 968 #endif
 969
 970 #if wxUSE_ICO_CUR
 971   wxImage::AddHandler( new wxICOHandler );
 972   wxImage::AddHandler( new wxCURHandler );
 973   wxImage::AddHandler( new wxANIHandler );
 974 #endif
 975
 976   wxFrame *frame = new MyFrame();
 977   frame->Show( TRUE );
 978
 979   return TRUE;
 980 }
 981