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__) || defined(__WXMAC__)
  39     #ifdef wxHAVE_RAW_BITMAP
  40     #include "wx/rawbmp.h"
  41     #endif
  42 #endif
  43
  44 // derived classes
  45
  46 class MyFrame;
  47 class MyApp;
  48
  49 // MyCanvas
  50
  51 class MyCanvas: public wxScrolledWindow
  52 {
  53 public:
  54     MyCanvas() {}
  55     MyCanvas( wxWindow *parent, wxWindowID, const wxPoint &pos, const wxSize &size );
  56     ~MyCanvas();
  57     void OnPaint( wxPaintEvent &event );
  58     void CreateAntiAliasedBitmap();
  59
  60     wxBitmap  *my_horse_png;
  61     wxBitmap  *my_horse_jpeg;
  62     wxBitmap  *my_horse_gif;
  63     wxBitmap  *my_horse_bmp;
  64     wxBitmap  *my_horse_bmp2;
  65     wxBitmap  *my_horse_pcx;
  66     wxBitmap  *my_horse_pnm;
  67     wxBitmap  *my_horse_tiff;
  68     wxBitmap  *my_horse_xpm;
  69     wxBitmap  *my_horse_ico32;
  70     wxBitmap  *my_horse_ico16;
  71     wxBitmap  *my_horse_ico;
  72     wxBitmap  *my_horse_cur;
  73     wxBitmap  *my_horse_ani;
  74
  75     wxBitmap  *my_smile_xbm;
  76     wxBitmap  *my_square;
  77     wxBitmap  *my_anti;
  78
  79     int xH, yH ;
  80     int m_ani_images ;
  81
  82 protected:
  83     wxBitmap m_bmpSmileXpm;
  84     wxIcon   m_iconSmileXpm;
  85
  86 private:
  87     DECLARE_DYNAMIC_CLASS(MyCanvas)
  88     DECLARE_EVENT_TABLE()
  89 };
  90
  91
  92 const int nChoices = 8 ;
  93 static const wxString bppchoices[nChoices] =
  94 {
  95     _T("1 bpp color"),
  96     _T("1 bpp B&W"),
  97     _T("4 bpp color"),
  98     _T("8 bpp color"),
  99     _T("8 bpp greyscale"),
 100     _T("8 bpp red"),
 101     _T("8 bpp own palette"),
 102     _T("24 bpp")
 103 };
 104
 105 static const int bppvalues[nChoices] =
 106 {
 107     wxBMP_1BPP,
 108     wxBMP_1BPP_BW,
 109     wxBMP_4BPP,
 110     wxBMP_8BPP,
 111     wxBMP_8BPP_GREY,
 112     wxBMP_8BPP_RED,
 113     wxBMP_8BPP_PALETTE,
 114     wxBMP_24BPP
 115 };
 116
 117 // MyFrame
 118
 119
 120 class MyFrame: public wxFrame
 121 {
 122 public:
 123     MyFrame();
 124
 125     void OnAbout( wxCommandEvent &event );
 126     void OnNewFrame( wxCommandEvent &event );
 127 #ifdef wxHAVE_RAW_BITMAP
 128     void OnTestRawBitmap( wxCommandEvent &event );
 129 #endif // wxHAVE_RAW_BITMAP
 130     void OnQuit( wxCommandEvent &event );
 131
 132 #if wxUSE_CLIPBOARD
 133     void OnCopy(wxCommandEvent& event);
 134     void OnPaste(wxCommandEvent& event);
 135 #endif // wxUSE_CLIPBOARD
 136
 137     MyCanvas         *m_canvas;
 138
 139 private:
 140     DECLARE_DYNAMIC_CLASS(MyFrame)
 141     DECLARE_EVENT_TABLE()
 142 };
 143
 144 class MyImageFrame : public wxFrame
 145 {
 146 public:
 147     MyImageFrame(wxFrame *parent, const wxBitmap& bitmap)
 148         : wxFrame(parent, -1, _T("Double click to save"),
 149                   wxDefaultPosition, wxDefaultSize,
 150                   wxCAPTION | wxSYSTEM_MENU | wxCLOSE_BOX),
 151                   m_bitmap(bitmap)
 152     {
 153         SetClientSize(bitmap.GetWidth(), bitmap.GetHeight());
 154     }
 155
 156     void OnEraseBackground(wxEraseEvent& WXUNUSED(event))
 157     {
 158         // do nothing here to be able to see how transparent images are shown
 159     }
 160
 161     void OnPaint(wxPaintEvent& WXUNUSED(event))
 162     {
 163         wxPaintDC dc( this );
 164         dc.DrawBitmap( m_bitmap, 0, 0, TRUE /* use mask */ );
 165     }
 166
 167     void OnSave(wxMouseEvent& WXUNUSED(event))
 168     {
 169         wxImage image = m_bitmap.ConvertToImage();
 170
 171         int bppselection = wxGetSingleChoiceIndex(_T("Set BMP BPP"),
 172                                                   _T("Set BMP BPP"),
 173                                                   nChoices,
 174                                                   bppchoices,
 175                                                   this);
 176         if ( bppselection == -1 )
 177         {
 178             // cancelled
 179             return;
 180         }
 181
 182         image.SetOption(wxIMAGE_OPTION_BMP_FORMAT, bppvalues[bppselection]);
 183
 184         wxString deffilename = bppchoices[bppselection];
 185         deffilename.Replace(wxT(" "), wxT("_"));
 186         deffilename += wxT(".bmp");
 187         wxString savefilename = wxFileSelector( wxT("Save Image"),
 188                                                 wxT(""),
 189                                                 deffilename,
 190                                                 (const wxChar *)NULL,
 191                                             wxT("BMP files (*.bmp)|*.bmp|")
 192                                             wxT("PNG files (*.png)|*.png|")
 193                                             wxT("JPEG files (*.jpg)|*.jpg|")
 194                                             wxT("GIF files (*.gif)|*.gif|")
 195                                             wxT("TIFF files (*.tif)|*.tif|")
 196                                             wxT("PCX files (*.pcx)|*.pcx|")
 197                                             wxT("ICO files (*.ico)|*.ico|")
 198                                             wxT("CUR files (*.cur)|*.cur"),
 199                                                 wxSAVE);
 200
 201         if ( savefilename.empty() )
 202             return;
 203
 204         if ( image.GetOptionInt(wxIMAGE_OPTION_BMP_FORMAT) == wxBMP_8BPP_PALETTE )
 205         {
 206             unsigned char *cmap = new unsigned char [256];
 207             for ( int i = 0; i < 256; i++ )
 208                 cmap[i] = i;
 209             image.SetPalette(wxPalette(256, cmap, cmap, cmap));
 210
 211             delete cmap;
 212         }
 213
 214         bool loaded;
 215         wxString extension = savefilename.AfterLast('.').Lower();
 216
 217         if (extension == _T("cur"))
 218         {
 219             image.Rescale(32,32);
 220             image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_X, 0);
 221             image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y, 0);
 222             // This shows how you can save an image with explicitly
 223             // specified image format:
 224             loaded = image.SaveFile(savefilename, wxBITMAP_TYPE_CUR);
 225         }
 226         else
 227         {
 228             // This one guesses image format from filename extension
 229             // (it may fail if the extension is not recognized):
 230             loaded = image.SaveFile(savefilename);
 231         }
 232
 233         if ( !loaded )
 234             wxMessageBox(_T("No handler for this file type."),
 235                          _T("File was not saved"),
 236                          wxOK|wxCENTRE, this);
 237     }
 238
 239 private:
 240     wxBitmap m_bitmap;
 241
 242     DECLARE_EVENT_TABLE()
 243 };
 244
 245 #ifdef wxHAVE_RAW_BITMAP
 246
 247 #include "wx/rawbmp.h"
 248
 249 class MyRawBitmapFrame : public wxFrame
 250 {
 251 public:
 252     enum
 253     {
 254         BORDER = 15,
 255         SIZE = 150,
 256         REAL_SIZE = SIZE - 2*BORDER
 257     };
 258
 259     MyRawBitmapFrame(wxFrame *parent)
 260         : wxFrame(parent, -1, _T("Raw bitmaps (how exciting)")),
 261           m_bitmap(SIZE, SIZE, 32)
 262     {
 263         SetClientSize(SIZE, SIZE);
 264
 265         // another possibility: wxNativePixelData (don't forget to remove code
 266         // setting alpha in the loop below then)
 267         typedef wxAlphaPixelData Data;
 268
 269         Data data(m_bitmap, wxPoint(BORDER, BORDER), wxSize(REAL_SIZE, REAL_SIZE));
 270         if ( !data )
 271         {
 272             wxLogError(_T("Failed to gain raw access to bitmap data"));
 273             return;
 274         }
 275
 276         data.UseAlpha();
 277
 278         Data::Iterator p(data);
 279
 280         for ( int y = 0; y < REAL_SIZE; ++y )
 281         {
 282             Data::Iterator rowStart = p;
 283
 284             int r = y < REAL_SIZE/3 ? 255 : 0,
 285                 g = (REAL_SIZE/3 <= y) && (y < 2*(REAL_SIZE/3)) ? 255 : 0,
 286                 b = 2*(REAL_SIZE/3) <= y ? 255 : 0;
 287
 288             for ( int x = 0; x < REAL_SIZE; ++x )
 289             {
 290                 p.Red() = r;
 291                 p.Green() = g;
 292                 p.Blue() = b;
 293                 p.Alpha() = (Data::Iterator::ChannelType)((x*255.)/REAL_SIZE);
 294
 295                 ++p; // same as p.OffsetX(1)
 296             }
 297
 298             p = rowStart;
 299             p.OffsetY(data, 1);
 300         }
 301     }
 302
 303     void OnPaint(wxPaintEvent& WXUNUSED(event))
 304     {
 305         wxPaintDC dc( this );
 306         dc.DrawText(_T("This is alpha and raw bitmap test"), 0, BORDER);
 307         dc.DrawText(_T("This is alpha and raw bitmap test"), 0, SIZE/2 - BORDER);
 308         dc.DrawText(_T("This is alpha and raw bitmap test"), 0, SIZE - 2*BORDER);
 309         dc.DrawBitmap( m_bitmap, 0, 0, TRUE /* use mask */ );
 310     }
 311
 312 private:
 313     wxBitmap m_bitmap;
 314
 315     DECLARE_EVENT_TABLE()
 316 };
 317
 318 #endif // wxHAVE_RAW_BITMAP
 319
 320 // MyApp
 321
 322 class MyApp: public wxApp
 323 {
 324 public:
 325     virtual bool OnInit();
 326 };
 327
 328 // main program
 329
 330 IMPLEMENT_APP(MyApp)
 331
 332 // MyCanvas
 333
 334 IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxScrolledWindow)
 335
 336 BEGIN_EVENT_TABLE(MyImageFrame, wxFrame)
 337     EVT_ERASE_BACKGROUND(MyImageFrame::OnEraseBackground)
 338     EVT_PAINT(MyImageFrame::OnPaint)
 339     EVT_LEFT_DCLICK(MyImageFrame::OnSave)
 340 END_EVENT_TABLE()
 341
 342 #ifdef wxHAVE_RAW_BITMAP
 343
 344 BEGIN_EVENT_TABLE(MyRawBitmapFrame, wxFrame)
 345     EVT_PAINT(MyRawBitmapFrame::OnPaint)
 346 END_EVENT_TABLE()
 347
 348 #endif // wxHAVE_RAW_BITMAP
 349
 350 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
 351   EVT_PAINT(MyCanvas::OnPaint)
 352 END_EVENT_TABLE()
 353
 354 MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
 355                     const wxPoint &pos, const wxSize &size )
 356         : wxScrolledWindow( parent, id, pos, size, wxSUNKEN_BORDER )
 357 #if !defined(__WINDOWS__) || wxUSE_XPM_IN_MSW
 358           , m_bmpSmileXpm((const char **) smile_xpm)
 359           , m_iconSmileXpm((const char **) smile_xpm)
 360 #endif
 361 {
 362     my_horse_png = (wxBitmap*) NULL;
 363     my_horse_jpeg = (wxBitmap*) NULL;
 364     my_horse_gif = (wxBitmap*) NULL;
 365     my_horse_bmp = (wxBitmap*) NULL;
 366     my_horse_bmp2 = (wxBitmap*) NULL;
 367     my_horse_pcx = (wxBitmap*) NULL;
 368     my_horse_pnm = (wxBitmap*) NULL;
 369     my_horse_tiff = (wxBitmap*) NULL;
 370     my_horse_xpm = (wxBitmap*) NULL;
 371     my_horse_ico32 = (wxBitmap*) NULL;
 372     my_horse_ico16 = (wxBitmap*) NULL;
 373     my_horse_ico = (wxBitmap*) NULL;
 374     my_horse_cur = (wxBitmap*) NULL;
 375     my_horse_ani = (wxBitmap*) NULL;
 376
 377     my_smile_xbm = (wxBitmap*) NULL;
 378     my_square = (wxBitmap*) NULL;
 379     my_anti = (wxBitmap*) NULL;
 380
 381     m_ani_images = 0 ;
 382
 383     SetBackgroundColour(* wxWHITE);
 384
 385     wxBitmap bitmap( 100, 100 );
 386
 387     wxMemoryDC dc;
 388     dc.SelectObject( bitmap );
 389     dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) );
 390     dc.SetPen( *wxBLACK_PEN );
 391     dc.DrawRectangle( 0, 0, 100, 100 );
 392     dc.SetBrush( *wxWHITE_BRUSH );
 393     dc.DrawRectangle( 20, 20, 60, 60 );
 394     dc.SelectObject( wxNullBitmap );
 395
 396     // try to find the directory with our images
 397     wxString dir;
 398     if ( wxFile::Exists(wxT("./horse.png")) )
 399         dir = wxT("./");
 400     else if ( wxFile::Exists(wxT("../horse.png")) )
 401         dir = wxT("../");
 402     else
 403         wxLogWarning(wxT("Can't find image files in either '.' or '..'!"));
 404
 405     wxImage image = bitmap.ConvertToImage();
 406
 407 #if wxUSE_LIBPNG
 408     if ( !image.SaveFile( dir + _T("test.png"), wxBITMAP_TYPE_PNG ))
 409         wxLogError(wxT("Can't save file"));
 410
 411     image.Destroy();
 412
 413     if ( image.LoadFile( dir + _T("test.png") ) )
 414         my_square = new wxBitmap( image );
 415
 416     image.Destroy();
 417
 418     if ( !image.LoadFile( dir + _T("horse.png")) )
 419         wxLogError(wxT("Can't load PNG image"));
 420     else
 421         my_horse_png = new wxBitmap( image );
 422 #endif // wxUSE_LIBPNG
 423
 424 #if wxUSE_LIBJPEG
 425     image.Destroy();
 426
 427     if ( !image.LoadFile( dir + _T("horse.jpg")) )
 428         wxLogError(wxT("Can't load JPG image"));
 429     else
 430         my_horse_jpeg = new wxBitmap( image );
 431 #endif // wxUSE_LIBJPEG
 432
 433 #if wxUSE_GIF
 434     image.Destroy();
 435
 436     if ( !image.LoadFile( dir + _T("horse.gif" )) )
 437         wxLogError(wxT("Can't load GIF image"));
 438     else
 439         my_horse_gif = new wxBitmap( image );
 440 #endif
 441
 442 #if wxUSE_PCX
 443     image.Destroy();
 444
 445     if ( !image.LoadFile( dir + _T("horse.pcx"), wxBITMAP_TYPE_PCX ) )
 446         wxLogError(wxT("Can't load PCX image"));
 447     else
 448         my_horse_pcx = new wxBitmap( image );
 449 #endif
 450
 451     image.Destroy();
 452
 453     if ( !image.LoadFile( dir + _T("horse.bmp"), wxBITMAP_TYPE_BMP ) )
 454         wxLogError(wxT("Can't load BMP image"));
 455     else
 456         my_horse_bmp = new wxBitmap( image );
 457
 458 #if wxUSE_XPM
 459     image.Destroy();
 460
 461     if ( !image.LoadFile( dir + _T("horse.xpm"), wxBITMAP_TYPE_XPM ) )
 462         wxLogError(wxT("Can't load XPM image"));
 463     else
 464         my_horse_xpm = new wxBitmap( image );
 465
 466     if ( !image.SaveFile( dir + _T("test.xpm"), wxBITMAP_TYPE_XPM ))
 467         wxLogError(wxT("Can't save file"));
 468 #endif
 469
 470 #if wxUSE_PNM
 471     image.Destroy();
 472
 473     if ( !image.LoadFile( dir + _T("horse.pnm"), wxBITMAP_TYPE_PNM ) )
 474         wxLogError(wxT("Can't load PNM image"));
 475     else
 476         my_horse_pnm = new wxBitmap( image );
 477 #endif
 478
 479 #if wxUSE_LIBTIFF
 480     image.Destroy();
 481
 482     if ( !image.LoadFile( dir + _T("horse.tif"), wxBITMAP_TYPE_TIF ) )
 483         wxLogError(wxT("Can't load TIFF image"));
 484     else
 485         my_horse_tiff = new wxBitmap( image );
 486 #endif
 487
 488     CreateAntiAliasedBitmap();
 489
 490     my_smile_xbm = new wxBitmap( (const char*)smile_bits, smile_width,
 491                                  smile_height, 1 );
 492
 493 #if !defined(__WINDOWS__) || wxUSE_XPM_IN_MSW
 494     // demonstrates XPM automatically using the mask when saving
 495     if ( m_bmpSmileXpm.Ok() )
 496         m_bmpSmileXpm.SaveFile(_T("saved.xpm"), wxBITMAP_TYPE_XPM);
 497 #endif
 498
 499 #if wxUSE_ICO_CUR
 500     image.Destroy();
 501
 502     if ( !image.LoadFile( dir + _T("horse.ico"), wxBITMAP_TYPE_ICO, 0 ) )
 503         wxLogError(wxT("Can't load first ICO image"));
 504     else
 505         my_horse_ico32 = new wxBitmap( image );
 506
 507     image.Destroy();
 508
 509     if ( !image.LoadFile( dir + _T("horse.ico"), wxBITMAP_TYPE_ICO, 1 ) )
 510         wxLogError(wxT("Can't load second ICO image"));
 511     else
 512         my_horse_ico16 = new wxBitmap( image );
 513
 514     image.Destroy();
 515
 516     if ( !image.LoadFile( dir + _T("horse.ico") ) )
 517         wxLogError(wxT("Can't load best ICO image"));
 518     else
 519         my_horse_ico = new wxBitmap( image );
 520
 521     image.Destroy();
 522
 523     if ( !image.LoadFile( dir + _T("horse.cur"), wxBITMAP_TYPE_CUR ) )
 524         wxLogError(wxT("Can't load best ICO image"));
 525     else
 526     {
 527         my_horse_cur = new wxBitmap( image );
 528         xH = 30 + image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X) ;
 529         yH = 2420 + image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y) ;
 530     }
 531
 532     m_ani_images = wxImage::GetImageCount ( dir + _T("horse3.ani"), wxBITMAP_TYPE_ANI );
 533     if (m_ani_images==0)
 534         wxLogError(wxT("No ANI-format images found"));
 535     else
 536         my_horse_ani = new wxBitmap [m_ani_images];
 537     int i ;
 538     for (i=0; i < m_ani_images; i++)
 539     {
 540         image.Destroy();
 541         if (!image.LoadFile( dir + _T("horse3.ani"), wxBITMAP_TYPE_ANI, i ))
 542         {
 543             wxString tmp = wxT("Can't load image number ");
 544             tmp << i ;
 545             wxLogError(tmp);
 546         }
 547         else
 548             my_horse_ani [i] = wxBitmap( image );
 549     }
 550 #endif // wxUSE_ICO_CUR
 551
 552     image.Destroy();
 553
 554     // test image loading from stream
 555     wxFile file(dir + _T("horse.bmp"));
 556     if ( file.IsOpened() )
 557     {
 558         off_t len = file.Length();
 559         void *data = malloc(len);
 560         if ( file.Read(data, len) != len )
 561             wxLogError(_T("Reading bitmap file failed"));
 562         else
 563         {
 564             wxMemoryInputStream mis(data, len);
 565             if ( !image.LoadFile(mis) )
 566                 wxLogError(wxT("Can't load BMP image from stream"));
 567             else
 568                 my_horse_bmp2 = new wxBitmap( image );
 569         }
 570
 571         free(data);
 572     }
 573 }
 574
 575 MyCanvas::~MyCanvas()
 576 {
 577     delete my_horse_pnm;
 578     delete my_horse_png;
 579     delete my_horse_jpeg;
 580     delete my_horse_gif;
 581     delete my_horse_bmp;
 582     delete my_horse_bmp2;
 583     delete my_horse_pcx;
 584     delete my_horse_tiff;
 585     delete my_horse_xpm;
 586     delete my_horse_ico32;
 587     delete my_horse_ico16;
 588     delete my_horse_ico;
 589     delete my_horse_cur;
 590     delete [] my_horse_ani;
 591     delete my_smile_xbm;
 592     delete my_square;
 593     delete my_anti;
 594 }
 595
 596 void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
 597 {
 598     wxPaintDC dc( this );
 599     PrepareDC( dc );
 600
 601     dc.DrawText( _T("Loaded image"), 30, 10 );
 602     if (my_square && my_square->Ok()) dc.DrawBitmap( *my_square, 30, 30 );
 603
 604     dc.DrawText( _T("Drawn directly"), 150, 10 );
 605     dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) );
 606     dc.SetPen( *wxBLACK_PEN );
 607     dc.DrawRectangle( 150, 30, 100, 100 );
 608     dc.SetBrush( *wxWHITE_BRUSH );
 609     dc.DrawRectangle( 170, 50, 60, 60 );
 610
 611     if (my_anti && my_anti->Ok())
 612         dc.DrawBitmap( *my_anti, 280, 30 );
 613
 614     dc.DrawText( _T("PNG handler"), 30, 135 );
 615     if (my_horse_png && my_horse_png->Ok())
 616     {
 617         dc.DrawBitmap( *my_horse_png, 30, 150 );
 618         wxRect rect(0,0,100,100);
 619         wxBitmap sub( my_horse_png->GetSubBitmap(rect) );
 620         dc.DrawText( _T("GetSubBitmap()"), 280, 190 );
 621         dc.DrawBitmap( sub, 280, 210 );
 622     }
 623
 624     dc.DrawText( _T("JPEG handler"), 30, 365 );
 625     if (my_horse_jpeg && my_horse_jpeg->Ok())
 626         dc.DrawBitmap( *my_horse_jpeg, 30, 380 );
 627
 628     dc.DrawText( _T("GIF handler"), 30, 595 );
 629     if (my_horse_gif && my_horse_gif->Ok())
 630         dc.DrawBitmap( *my_horse_gif, 30, 610 );
 631
 632     dc.DrawText( _T("PCX handler"), 30, 825 );
 633     if (my_horse_pcx && my_horse_pcx->Ok())
 634         dc.DrawBitmap( *my_horse_pcx, 30, 840 );
 635
 636     dc.DrawText( _T("BMP handler"), 30, 1055 );
 637     if (my_horse_bmp && my_horse_bmp->Ok())
 638         dc.DrawBitmap( *my_horse_bmp, 30, 1070 );
 639
 640     dc.DrawText( _T("BMP read from memory"), 280, 1055 );
 641     if (my_horse_bmp2 && my_horse_bmp2->Ok())
 642         dc.DrawBitmap( *my_horse_bmp2, 280, 1070 );
 643
 644     dc.DrawText( _T("PNM handler"), 30, 1285 );
 645     if (my_horse_pnm && my_horse_pnm->Ok())
 646         dc.DrawBitmap( *my_horse_pnm, 30, 1300 );
 647
 648     dc.DrawText( _T("TIFF handler"), 30, 1515 );
 649     if (my_horse_tiff && my_horse_tiff->Ok())
 650         dc.DrawBitmap( *my_horse_tiff, 30, 1530 );
 651
 652     dc.DrawText( _T("XPM handler"), 30, 1745 );
 653     if (my_horse_xpm && my_horse_xpm->Ok())
 654         dc.DrawBitmap( *my_horse_xpm, 30, 1760 );
 655
 656
 657     if (my_smile_xbm && my_smile_xbm->Ok())
 658     {
 659         dc.DrawText( _T("XBM bitmap"), 30, 1975 );
 660         dc.DrawText( _T("(green on red)"), 30, 1990 );
 661         dc.SetTextForeground( _T("GREEN") );
 662         dc.SetTextBackground( _T("RED") );
 663         dc.DrawBitmap( *my_smile_xbm, 30, 2010 );
 664
 665         dc.SetTextForeground( wxT("BLACK") );
 666         dc.DrawText( _T("After wxImage conversion"), 150, 1975 );
 667         dc.DrawText( _T("(red on white)"), 150, 1990 );
 668         dc.SetTextForeground( wxT("RED") );
 669         wxImage i = my_smile_xbm->ConvertToImage();
 670         i.SetMaskColour( 255, 255, 255 );
 671         i.Replace( 0, 0, 0,
 672                wxRED_PEN->GetColour().Red(),
 673                wxRED_PEN->GetColour().Green(),
 674                wxRED_PEN->GetColour().Blue() );
 675         dc.DrawBitmap( wxBitmap(i), 150, 2010, TRUE );
 676         dc.SetTextForeground( wxT("BLACK") );
 677     }
 678
 679
 680     wxBitmap mono( 60,50,1 );
 681     wxMemoryDC memdc;
 682     memdc.SelectObject( mono );
 683     memdc.SetPen( *wxBLACK_PEN );
 684     memdc.SetBrush( *wxWHITE_BRUSH );
 685     memdc.DrawRectangle( 0,0,60,50 );
 686     memdc.SetTextForeground( *wxBLACK );
 687 #ifndef __WXGTK20__
 688     // I cannot convince GTK2 to draw into mono bitmaps
 689     memdc.DrawText( _T("Hi!"), 5, 5 );
 690 #endif
 691     memdc.SetBrush( *wxBLACK_BRUSH );
 692     memdc.DrawRectangle( 33,5,20,20 );
 693     memdc.SetPen( *wxRED_PEN );
 694     memdc.DrawLine( 5, 42, 50, 42 );
 695     memdc.SelectObject( wxNullBitmap );
 696
 697     if (mono.Ok())
 698     {
 699         dc.DrawText( _T("Mono bitmap"), 30, 2095 );
 700         dc.DrawText( _T("(red on green)"), 30, 2110 );
 701         dc.SetTextForeground( wxT("RED") );
 702         dc.SetTextBackground( wxT("GREEN") );
 703         dc.DrawBitmap( mono, 30, 2130 );
 704
 705         dc.SetTextForeground( wxT("BLACK") );
 706         dc.DrawText( _T("After wxImage conversion"), 150, 2095 );
 707         dc.DrawText( _T("(red on white)"), 150, 2110 );
 708         dc.SetTextForeground( wxT("RED") );
 709         wxImage i = mono.ConvertToImage();
 710         i.SetMaskColour( 255,255,255 );
 711         i.Replace( 0,0,0,
 712                wxRED_PEN->GetColour().Red(),
 713                wxRED_PEN->GetColour().Green(),
 714                wxRED_PEN->GetColour().Blue() );
 715         dc.DrawBitmap( wxBitmap(i), 150, 2130, TRUE );
 716         dc.SetTextForeground( wxT("BLACK") );
 717     }
 718
 719     dc.DrawText(_T("XPM bitmap"), 30, 2230);
 720     if ( m_bmpSmileXpm.Ok() )
 721     {
 722         dc.DrawBitmap(m_bmpSmileXpm, 30, 2250, TRUE);
 723     }
 724
 725     dc.DrawText(_T("XPM icon"), 150, 2230);
 726     if ( m_iconSmileXpm.Ok() )
 727     {
 728         dc.DrawIcon(m_iconSmileXpm, 150, 2250);
 729     }
 730
 731     dc.DrawText( _T("ICO handler (1st image)"), 30, 2290 );
 732     if (my_horse_ico32 && my_horse_ico32->Ok())
 733         dc.DrawBitmap( *my_horse_ico32, 30, 2330, TRUE );
 734
 735     dc.DrawText( _T("ICO handler (2nd image)"), 230, 2290 );
 736     if (my_horse_ico16 && my_horse_ico16->Ok())
 737         dc.DrawBitmap( *my_horse_ico16, 230, 2330, TRUE );
 738
 739     dc.DrawText( _T("ICO handler (best image)"), 430, 2290 );
 740     if (my_horse_ico && my_horse_ico->Ok())
 741         dc.DrawBitmap( *my_horse_ico, 430, 2330, TRUE );
 742
 743     dc.DrawText( _T("CUR handler"), 30, 2390 );
 744     if (my_horse_cur && my_horse_cur->Ok())
 745     {
 746         dc.DrawBitmap( *my_horse_cur, 30, 2420, TRUE );
 747         dc.SetPen (*wxRED_PEN);
 748         dc.DrawLine (xH-10,yH,xH+10,yH);
 749         dc.DrawLine (xH,yH-10,xH,yH+10);
 750     }
 751     dc.DrawText( _T("ANI handler"), 230, 2390 );
 752     int i ;
 753     for (i=0; i < m_ani_images; i ++)
 754         if (my_horse_ani[i].Ok())
 755         {
 756             dc.DrawBitmap( my_horse_ani[i], 230 + i * 2 * my_horse_ani[i].GetWidth() , 2420, TRUE );
 757         }
 758 }
 759
 760 void MyCanvas::CreateAntiAliasedBitmap()
 761 {
 762   wxBitmap bitmap( 300, 300 );
 763
 764   wxMemoryDC dc;
 765
 766   dc.SelectObject( bitmap );
 767
 768   dc.Clear();
 769
 770   dc.SetFont( wxFont( 24, wxDECORATIVE, wxNORMAL, wxNORMAL) );
 771   dc.SetTextForeground( wxT("RED") );
 772   dc.DrawText( _T("This is anti-aliased Text."), 20, 20 );
 773   dc.DrawText( _T("And a Rectangle."), 20, 60 );
 774
 775   dc.SetBrush( *wxRED_BRUSH );
 776   dc.SetPen( *wxTRANSPARENT_PEN );
 777   dc.DrawRoundedRectangle( 20, 100, 200, 180, 20 );
 778
 779   wxImage original= bitmap.ConvertToImage();
 780   wxImage anti( 150, 150 );
 781
 782   /* This is quite slow, but safe. Use wxImage::GetData() for speed instead. */
 783
 784   for (int y = 1; y < 149; y++)
 785     for (int x = 1; x < 149; x++)
 786     {
 787        int red = original.GetRed( x*2, y*2 ) +
 788                  original.GetRed( x*2-1, y*2 ) +
 789                  original.GetRed( x*2, y*2+1 ) +
 790                  original.GetRed( x*2+1, y*2+1 );
 791        red = red/4;
 792
 793        int green = original.GetGreen( x*2, y*2 ) +
 794                    original.GetGreen( x*2-1, y*2 ) +
 795                    original.GetGreen( x*2, y*2+1 ) +
 796                    original.GetGreen( x*2+1, y*2+1 );
 797        green = green/4;
 798
 799        int blue = original.GetBlue( x*2, y*2 ) +
 800                   original.GetBlue( x*2-1, y*2 ) +
 801                   original.GetBlue( x*2, y*2+1 ) +
 802                   original.GetBlue( x*2+1, y*2+1 );
 803        blue = blue/4;
 804        anti.SetRGB( x, y, red, green, blue );
 805     }
 806   my_anti = new wxBitmap(anti);
 807 }
 808
 809 // MyFrame
 810
 811 enum
 812 {
 813     ID_QUIT  = 108,
 814     ID_ABOUT,
 815     ID_NEW,
 816     ID_SHOWRAW
 817 };
 818
 819 IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )
 820
 821 BEGIN_EVENT_TABLE(MyFrame,wxFrame)
 822   EVT_MENU    (ID_ABOUT, MyFrame::OnAbout)
 823   EVT_MENU    (ID_QUIT,  MyFrame::OnQuit)
 824   EVT_MENU    (ID_NEW,  MyFrame::OnNewFrame)
 825 #ifdef wxHAVE_RAW_BITMAP
 826   EVT_MENU    (ID_SHOWRAW,  MyFrame::OnTestRawBitmap)
 827 #endif
 828
 829 #if wxUSE_CLIPBOARD
 830     EVT_MENU(wxID_COPY, MyFrame::OnCopy)
 831     EVT_MENU(wxID_PASTE, MyFrame::OnPaste)
 832 #endif // wxUSE_CLIPBOARD
 833 END_EVENT_TABLE()
 834
 835 MyFrame::MyFrame()
 836        : wxFrame( (wxFrame *)NULL, -1, _T("wxImage sample"),
 837                   wxPoint(20,20), wxSize(470,360) )
 838 {
 839   wxMenuBar *menu_bar = new wxMenuBar();
 840
 841   wxMenu *menuImage = new wxMenu;
 842   menuImage->Append( ID_NEW, _T("&Show any image...\tCtrl-O"));
 843
 844 #ifdef wxHAVE_RAW_BITMAP
 845   menuImage->Append( ID_SHOWRAW, _T("Test &raw bitmap...\tCtrl-R"));
 846 #endif
 847   menuImage->AppendSeparator();
 848   menuImage->Append( ID_ABOUT, _T("&About..."));
 849   menuImage->AppendSeparator();
 850   menuImage->Append( ID_QUIT, _T("E&xit\tCtrl-Q"));
 851   menu_bar->Append(menuImage, _T("&Image"));
 852
 853 #if wxUSE_CLIPBOARD
 854   wxMenu *menuClipboard = new wxMenu;
 855   menuClipboard->Append(wxID_COPY, _T("&Copy test image\tCtrl-C"));
 856   menuClipboard->Append(wxID_PASTE, _T("&Paste image\tCtrl-V"));
 857   menu_bar->Append(menuClipboard, _T("&Clipboard"));
 858 #endif // wxUSE_CLIPBOARD
 859
 860   SetMenuBar( menu_bar );
 861
 862   CreateStatusBar(2);
 863   int widths[] = { -1, 100 };
 864   SetStatusWidths( 2, widths );
 865
 866   m_canvas = new MyCanvas( this, -1, wxPoint(0,0), wxSize(10,10) );
 867
 868   // 500 width * 2500 height
 869   m_canvas->SetScrollbars( 10, 10, 50, 250 );
 870 }
 871
 872 void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
 873 {
 874   Close( TRUE );
 875 }
 876
 877 void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) )
 878 {
 879   (void)wxMessageBox( _T("wxImage demo\n")
 880                       _T("Robert Roebling (c) 1998,2000"),
 881                       _T("About wxImage Demo"), wxICON_INFORMATION | wxOK );
 882 }
 883
 884 void MyFrame::OnNewFrame( wxCommandEvent &WXUNUSED(event) )
 885 {
 886     wxString filename = wxFileSelector(_T("Select image file"));
 887     if ( !filename )
 888         return;
 889
 890     wxImage image;
 891     if ( !image.LoadFile(filename) )
 892     {
 893         wxLogError(_T("Couldn't load image from '%s'."), filename.c_str());
 894
 895         return;
 896     }
 897
 898     (new MyImageFrame(this, wxBitmap(image)))->Show();
 899 }
 900
 901 #ifdef wxHAVE_RAW_BITMAP
 902
 903 void MyFrame::OnTestRawBitmap( wxCommandEvent &WXUNUSED(event) )
 904 {
 905     (new MyRawBitmapFrame(this))->Show();
 906 }
 907
 908 #endif // wxHAVE_RAW_BITMAP
 909
 910 #if wxUSE_CLIPBOARD
 911
 912 void MyFrame::OnCopy(wxCommandEvent& WXUNUSED(event))
 913 {
 914     wxBitmapDataObject *dobjBmp = new wxBitmapDataObject;
 915     dobjBmp->SetBitmap(*m_canvas->my_horse_png);
 916
 917     wxTheClipboard->Open();
 918
 919     if ( !wxTheClipboard->SetData(dobjBmp) )
 920     {
 921         wxLogError(_T("Failed to copy bitmap to clipboard"));
 922     }
 923
 924     wxTheClipboard->Close();
 925 }
 926
 927 void MyFrame::OnPaste(wxCommandEvent& WXUNUSED(event))
 928 {
 929     wxBitmapDataObject dobjBmp;
 930
 931     wxTheClipboard->Open();
 932     if ( !wxTheClipboard->GetData(dobjBmp) )
 933     {
 934         wxLogMessage(_T("No bitmap data in the clipboard"));
 935     }
 936     else
 937     {
 938         (new MyImageFrame(this, dobjBmp.GetBitmap()))->Show();
 939     }
 940     wxTheClipboard->Close();
 941 }
 942
 943 #endif // wxUSE_CLIPBOARD
 944
 945 //-----------------------------------------------------------------------------
 946 // MyApp
 947 //-----------------------------------------------------------------------------
 948
 949 bool MyApp::OnInit()
 950 {
 951 #if wxUSE_LIBPNG
 952   wxImage::AddHandler( new wxPNGHandler );
 953 #endif
 954
 955 #if wxUSE_LIBJPEG
 956   wxImage::AddHandler( new wxJPEGHandler );
 957 #endif
 958
 959 #if wxUSE_LIBTIFF
 960   wxImage::AddHandler( new wxTIFFHandler );
 961 #endif
 962
 963 #if wxUSE_GIF
 964   wxImage::AddHandler( new wxGIFHandler );
 965 #endif
 966
 967 #if wxUSE_PCX
 968   wxImage::AddHandler( new wxPCXHandler );
 969 #endif
 970
 971 #if wxUSE_PNM
 972   wxImage::AddHandler( new wxPNMHandler );
 973 #endif
 974
 975 #if wxUSE_XPM
 976   wxImage::AddHandler( new wxXPMHandler );
 977 #endif
 978
 979 #if wxUSE_ICO_CUR
 980   wxImage::AddHandler( new wxICOHandler );
 981   wxImage::AddHandler( new wxCURHandler );
 982   wxImage::AddHandler( new wxANIHandler );
 983 #endif
 984
 985   wxFrame *frame = new MyFrame();
 986   frame->Show( TRUE );
 987
 988   return TRUE;
 989 }
 990