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 #define wxHAVE_RAW_BITMAP
  40
  41 // derived classes
  42
  43 class MyFrame;
  44 class MyApp;
  45
  46 // MyCanvas
  47
  48 class MyCanvas: public wxScrolledWindow
  49 {
  50 public:
  51     MyCanvas() {}
  52     MyCanvas( wxWindow *parent, wxWindowID, const wxPoint &pos, const wxSize &size );
  53     ~MyCanvas();
  54     void OnPaint( wxPaintEvent &event );
  55     void CreateAntiAliasedBitmap();
  56
  57     wxBitmap  *my_horse_png;
  58     wxBitmap  *my_horse_jpeg;
  59     wxBitmap  *my_horse_gif;
  60     wxBitmap  *my_horse_bmp;
  61     wxBitmap  *my_horse_bmp2;
  62     wxBitmap  *my_horse_pcx;
  63     wxBitmap  *my_horse_pnm;
  64     wxBitmap  *my_horse_tiff;
  65     wxBitmap  *my_horse_xpm;
  66     wxBitmap  *my_horse_ico32;
  67     wxBitmap  *my_horse_ico16;
  68     wxBitmap  *my_horse_ico;
  69     wxBitmap  *my_horse_cur;
  70     wxBitmap  *my_horse_ani;
  71
  72     wxBitmap  *my_smile_xbm;
  73     wxBitmap  *my_square;
  74     wxBitmap  *my_anti;
  75
  76     int xH, yH ;
  77     int m_ani_images ;
  78
  79 protected:
  80     wxBitmap m_bmpSmileXpm;
  81     wxIcon   m_iconSmileXpm;
  82
  83 private:
  84     DECLARE_DYNAMIC_CLASS(MyCanvas)
  85     DECLARE_EVENT_TABLE()
  86 };
  87
  88
  89 const int nChoices = 8 ;
  90 static const wxString bppchoices[nChoices] =
  91 {
  92     _T("1 bpp color"),
  93     _T("1 bpp B&W"),
  94     _T("4 bpp color"),
  95     _T("8 bpp color"),
  96     _T("8 bpp greyscale"),
  97     _T("8 bpp red"),
  98     _T("8 bpp own palette"),
  99     _T("24 bpp")
 100 };
 101
 102 static const int bppvalues[nChoices] =
 103 {
 104     wxBMP_1BPP,
 105     wxBMP_1BPP_BW,
 106     wxBMP_4BPP,
 107     wxBMP_8BPP,
 108     wxBMP_8BPP_GREY,
 109     wxBMP_8BPP_RED,
 110     wxBMP_8BPP_PALETTE,
 111     wxBMP_24BPP
 112 };
 113
 114 // MyFrame
 115
 116
 117 class MyFrame: public wxFrame
 118 {
 119 public:
 120     MyFrame();
 121
 122     void OnAbout( wxCommandEvent &event );
 123     void OnNewFrame( wxCommandEvent &event );
 124 #ifdef wxHAVE_RAW_BITMAP
 125     void OnTestRawBitmap( wxCommandEvent &event );
 126 #endif // wxHAVE_RAW_BITMAP
 127     void OnQuit( wxCommandEvent &event );
 128
 129 #if wxUSE_CLIPBOARD
 130     void OnCopy(wxCommandEvent& event);
 131     void OnPaste(wxCommandEvent& event);
 132 #endif // wxUSE_CLIPBOARD
 133
 134     MyCanvas         *m_canvas;
 135
 136 private:
 137     DECLARE_DYNAMIC_CLASS(MyFrame)
 138     DECLARE_EVENT_TABLE()
 139 };
 140
 141 class MyImageFrame : public wxFrame
 142 {
 143 public:
 144     MyImageFrame(wxFrame *parent, const wxBitmap& bitmap)
 145         : wxFrame(parent, -1, _T("Double click to save"),
 146                   wxDefaultPosition, wxDefaultSize,
 147                   wxCAPTION | wxSYSTEM_MENU | wxCLOSE_BOX),
 148                   m_bitmap(bitmap)
 149     {
 150         SetClientSize(bitmap.GetWidth(), bitmap.GetHeight());
 151     }
 152
 153     void OnEraseBackground(wxEraseEvent& WXUNUSED(event))
 154     {
 155         // do nothing here to be able to see how transparent images are shown
 156     }
 157
 158     void OnPaint(wxPaintEvent& WXUNUSED(event))
 159     {
 160         wxPaintDC dc( this );
 161         dc.DrawBitmap( m_bitmap, 0, 0, TRUE /* use mask */ );
 162     }
 163
 164     void OnSave(wxMouseEvent& WXUNUSED(event))
 165     {
 166         wxImage image = m_bitmap.ConvertToImage();
 167
 168         int bppselection = wxGetSingleChoiceIndex(_T("Set BMP BPP"),
 169                                                   _T("Set BMP BPP"),
 170                                                   nChoices,
 171                                                   bppchoices,
 172                                                   this);
 173         if ( bppselection == -1 )
 174         {
 175             // cancelled
 176             return;
 177         }
 178
 179         image.SetOption(wxIMAGE_OPTION_BMP_FORMAT, bppvalues[bppselection]);
 180
 181         wxString deffilename = bppchoices[bppselection];
 182         deffilename.Replace(wxT(" "), wxT("_"));
 183         deffilename += wxT(".bmp");
 184         wxString savefilename = wxFileSelector( wxT("Save Image"),
 185                                                 wxT(""),
 186                                                 deffilename,
 187                                                 (const wxChar *)NULL,
 188                                             wxT("BMP files (*.bmp)|*.bmp|")
 189                                             wxT("PNG files (*.png)|*.png|")
 190                                             wxT("JPEG files (*.jpg)|*.jpg|")
 191                                             wxT("GIF files (*.gif)|*.gif|")
 192                                             wxT("TIFF files (*.tif)|*.tif|")
 193                                             wxT("PCX files (*.pcx)|*.pcx|")
 194                                             wxT("ICO files (*.ico)|*.ico|")
 195                                             wxT("CUR files (*.cur)|*.cur"),
 196                                                 wxSAVE);
 197
 198         if ( savefilename.empty() )
 199             return;
 200
 201         if ( image.GetOptionInt(wxIMAGE_OPTION_BMP_FORMAT) == wxBMP_8BPP_PALETTE )
 202         {
 203             unsigned char *cmap = new unsigned char [256];
 204             for ( int i = 0; i < 256; i++ )
 205                 cmap[i] = i;
 206             image.SetPalette(wxPalette(256, cmap, cmap, cmap));
 207
 208             delete cmap;
 209         }
 210
 211         bool loaded;
 212         wxString extension = savefilename.AfterLast('.').Lower();
 213
 214         if (extension == _T("cur"))
 215         {
 216             image.Rescale(32,32);
 217             image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_X, 0);
 218             image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y, 0);
 219             // This shows how you can save an image with explicitly
 220             // specified image format:
 221             loaded = image.SaveFile(savefilename, wxBITMAP_TYPE_CUR);
 222         }
 223         else
 224         {
 225             // This one guesses image format from filename extension
 226             // (it may fail if the extension is not recognized):
 227             loaded = image.SaveFile(savefilename);
 228         }
 229
 230         if ( !loaded )
 231             wxMessageBox(_T("No handler for this file type."),
 232                          _T("File was not saved"),
 233                          wxOK|wxCENTRE, this);
 234     }
 235
 236 private:
 237     wxBitmap m_bitmap;
 238
 239     DECLARE_EVENT_TABLE()
 240 };
 241
 242 #ifdef wxHAVE_RAW_BITMAP
 243
 244 #include "wx/rawbmp.h"
 245
 246 class MyRawBitmapFrame : public wxFrame
 247 {
 248 public:
 249     enum
 250     {
 251         BORDER = 15,
 252         SIZE = 150,
 253         REAL_SIZE = SIZE - 2*BORDER
 254     };
 255
 256     MyRawBitmapFrame(wxFrame *parent)
 257         : wxFrame(parent, -1, _T("Raw bitmaps (how exciting)")),
 258           m_bitmap(SIZE, SIZE, 32)
 259     {
 260         SetClientSize(SIZE, SIZE);
 261
 262         wxAlphaPixelData data(m_bitmap,
 263                               wxPoint(BORDER, BORDER),
 264                               wxSize(REAL_SIZE, REAL_SIZE));
 265         if ( !data )
 266         {
 267             wxLogError(_T("Failed to gain raw access to bitmap data"));
 268             return;
 269         }
 270
 271         data.UseAlpha();
 272
 273         wxAlphaPixelData::Iterator p(data);
 274
 275         for ( int y = 0; y < REAL_SIZE; ++y )
 276         {
 277             wxAlphaPixelData::Iterator rowStart = p;
 278
 279             int r = y < REAL_SIZE/3 ? 255 : 0,
 280                 g = (REAL_SIZE/3 <= y) && (y < 2*(REAL_SIZE/3)) ? 255 : 0,
 281                 b = 2*(REAL_SIZE/3) <= y ? 255 : 0;
 282
 283             for ( int x = 0; x < REAL_SIZE; ++x )
 284             {
 285                 p.Red() = r;
 286                 p.Green() = g;
 287                 p.Blue() = b;
 288                 p.Alpha() =
 289                     (wxAlphaPixelFormat::ChannelType)((x*255.)/REAL_SIZE);
 290
 291                 ++p; // same as p.OffsetX(1)
 292             }
 293
 294             p = rowStart;
 295             p.OffsetY(data, 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     if ( 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     if ( file.IsOpened() )
 553     {
 554         off_t len = file.Length();
 555         void *data = malloc(len);
 556         if ( file.Read(data, len) != len )
 557             wxLogError(_T("Reading bitmap file failed"));
 558         else
 559         {
 560             wxMemoryInputStream mis(data, len);
 561             if ( !image.LoadFile(mis) )
 562                 wxLogError(wxT("Can't load BMP image from stream"));
 563             else
 564                 my_horse_bmp2 = new wxBitmap( image );
 565         }
 566
 567         free(data);
 568     }
 569 }
 570
 571 MyCanvas::~MyCanvas()
 572 {
 573     delete my_horse_pnm;
 574     delete my_horse_png;
 575     delete my_horse_jpeg;
 576     delete my_horse_gif;
 577     delete my_horse_bmp;
 578     delete my_horse_bmp2;
 579     delete my_horse_pcx;
 580     delete my_horse_tiff;
 581     delete my_horse_xpm;
 582     delete my_horse_ico32;
 583     delete my_horse_ico16;
 584     delete my_horse_ico;
 585     delete my_horse_cur;
 586     delete [] my_horse_ani;
 587     delete my_smile_xbm;
 588     delete my_square;
 589     delete my_anti;
 590 }
 591
 592 void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
 593 {
 594     wxPaintDC dc( this );
 595     PrepareDC( dc );
 596
 597     dc.DrawText( _T("Loaded image"), 30, 10 );
 598     if (my_square && my_square->Ok()) dc.DrawBitmap( *my_square, 30, 30 );
 599
 600     dc.DrawText( _T("Drawn directly"), 150, 10 );
 601     dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) );
 602     dc.SetPen( *wxBLACK_PEN );
 603     dc.DrawRectangle( 150, 30, 100, 100 );
 604     dc.SetBrush( *wxWHITE_BRUSH );
 605     dc.DrawRectangle( 170, 50, 60, 60 );
 606
 607     if (my_anti && my_anti->Ok())
 608         dc.DrawBitmap( *my_anti, 280, 30 );
 609
 610     dc.DrawText( _T("PNG handler"), 30, 135 );
 611     if (my_horse_png && my_horse_png->Ok())
 612     {
 613         dc.DrawBitmap( *my_horse_png, 30, 150 );
 614         wxRect rect(0,0,100,100);
 615         wxBitmap sub( my_horse_png->GetSubBitmap(rect) );
 616         dc.DrawText( _T("GetSubBitmap()"), 280, 190 );
 617         dc.DrawBitmap( sub, 280, 210 );
 618     }
 619
 620     dc.DrawText( _T("JPEG handler"), 30, 365 );
 621     if (my_horse_jpeg && my_horse_jpeg->Ok())
 622         dc.DrawBitmap( *my_horse_jpeg, 30, 380 );
 623
 624     dc.DrawText( _T("GIF handler"), 30, 595 );
 625     if (my_horse_gif && my_horse_gif->Ok())
 626         dc.DrawBitmap( *my_horse_gif, 30, 610 );
 627
 628     dc.DrawText( _T("PCX handler"), 30, 825 );
 629     if (my_horse_pcx && my_horse_pcx->Ok())
 630         dc.DrawBitmap( *my_horse_pcx, 30, 840 );
 631
 632     dc.DrawText( _T("BMP handler"), 30, 1055 );
 633     if (my_horse_bmp && my_horse_bmp->Ok())
 634         dc.DrawBitmap( *my_horse_bmp, 30, 1070 );
 635
 636     dc.DrawText( _T("BMP read from memory"), 280, 1055 );
 637     if (my_horse_bmp2 && my_horse_bmp2->Ok())
 638         dc.DrawBitmap( *my_horse_bmp2, 280, 1070 );
 639
 640     dc.DrawText( _T("PNM handler"), 30, 1285 );
 641     if (my_horse_pnm && my_horse_pnm->Ok())
 642         dc.DrawBitmap( *my_horse_pnm, 30, 1300 );
 643
 644     dc.DrawText( _T("TIFF handler"), 30, 1515 );
 645     if (my_horse_tiff && my_horse_tiff->Ok())
 646         dc.DrawBitmap( *my_horse_tiff, 30, 1530 );
 647
 648     dc.DrawText( _T("XPM handler"), 30, 1745 );
 649     if (my_horse_xpm && my_horse_xpm->Ok())
 650         dc.DrawBitmap( *my_horse_xpm, 30, 1760 );
 651
 652
 653     if (my_smile_xbm && my_smile_xbm->Ok())
 654     {
 655         dc.DrawText( _T("XBM bitmap"), 30, 1975 );
 656         dc.DrawText( _T("(green on red)"), 30, 1990 );
 657         dc.SetTextForeground( _T("GREEN") );
 658         dc.SetTextBackground( _T("RED") );
 659         dc.DrawBitmap( *my_smile_xbm, 30, 2010 );
 660
 661         dc.SetTextForeground( wxT("BLACK") );
 662         dc.DrawText( _T("After wxImage conversion"), 150, 1975 );
 663         dc.DrawText( _T("(red on white)"), 150, 1990 );
 664         dc.SetTextForeground( wxT("RED") );
 665         wxImage i = my_smile_xbm->ConvertToImage();
 666         i.SetMaskColour( 255, 255, 255 );
 667         i.Replace( 0, 0, 0,
 668                wxRED_PEN->GetColour().Red(),
 669                wxRED_PEN->GetColour().Green(),
 670                wxRED_PEN->GetColour().Blue() );
 671         dc.DrawBitmap( wxBitmap(i), 150, 2010, TRUE );
 672         dc.SetTextForeground( wxT("BLACK") );
 673     }
 674
 675
 676     wxBitmap mono( 60,50,1 );
 677     wxMemoryDC memdc;
 678     memdc.SelectObject( mono );
 679     memdc.SetPen( *wxBLACK_PEN );
 680     memdc.SetBrush( *wxWHITE_BRUSH );
 681     memdc.DrawRectangle( 0,0,60,50 );
 682     memdc.SetTextForeground( *wxBLACK );
 683     memdc.DrawText( _T("Hi!"), 5, 5 );
 684     memdc.SetBrush( *wxBLACK_BRUSH );
 685     memdc.DrawRectangle( 33,5,20,20 );
 686     memdc.SetPen( *wxRED_PEN );
 687     memdc.DrawLine( 5, 42, 50, 42 );
 688     memdc.SelectObject( wxNullBitmap );
 689
 690     if (mono.Ok())
 691     {
 692         dc.DrawText( _T("Mono bitmap"), 30, 2095 );
 693         dc.DrawText( _T("(red on green)"), 30, 2110 );
 694         dc.SetTextForeground( wxT("RED") );
 695         dc.SetTextBackground( wxT("GREEN") );
 696         dc.DrawBitmap( mono, 30, 2130 );
 697
 698         dc.SetTextForeground( wxT("BLACK") );
 699         dc.DrawText( _T("After wxImage conversion"), 150, 2095 );
 700         dc.DrawText( _T("(red on white)"), 150, 2110 );
 701         dc.SetTextForeground( wxT("RED") );
 702         wxImage i = mono.ConvertToImage();
 703         i.SetMaskColour( 255,255,255 );
 704         i.Replace( 0,0,0,
 705                wxRED_PEN->GetColour().Red(),
 706                wxRED_PEN->GetColour().Green(),
 707                wxRED_PEN->GetColour().Blue() );
 708         dc.DrawBitmap( wxBitmap(i), 150, 2130, TRUE );
 709         dc.SetTextForeground( wxT("BLACK") );
 710     }
 711
 712     dc.DrawText(_T("XPM bitmap"), 30, 2230);
 713     if ( m_bmpSmileXpm.Ok() )
 714     {
 715         dc.DrawBitmap(m_bmpSmileXpm, 30, 2250, TRUE);
 716     }
 717
 718     dc.DrawText(_T("XPM icon"), 150, 2230);
 719     if ( m_iconSmileXpm.Ok() )
 720     {
 721         dc.DrawIcon(m_iconSmileXpm, 150, 2250);
 722     }
 723
 724     dc.DrawText( _T("ICO handler (1st image)"), 30, 2290 );
 725     if (my_horse_ico32 && my_horse_ico32->Ok())
 726         dc.DrawBitmap( *my_horse_ico32, 30, 2330, TRUE );
 727
 728     dc.DrawText( _T("ICO handler (2nd image)"), 230, 2290 );
 729     if (my_horse_ico16 && my_horse_ico16->Ok())
 730         dc.DrawBitmap( *my_horse_ico16, 230, 2330, TRUE );
 731
 732     dc.DrawText( _T("ICO handler (best image)"), 430, 2290 );
 733     if (my_horse_ico && my_horse_ico->Ok())
 734         dc.DrawBitmap( *my_horse_ico, 430, 2330, TRUE );
 735
 736     dc.DrawText( _T("CUR handler"), 30, 2390 );
 737     if (my_horse_cur && my_horse_cur->Ok())
 738     {
 739         dc.DrawBitmap( *my_horse_cur, 30, 2420, TRUE );
 740         dc.SetPen (*wxRED_PEN);
 741         dc.DrawLine (xH-10,yH,xH+10,yH);
 742         dc.DrawLine (xH,yH-10,xH,yH+10);
 743     }
 744     dc.DrawText( _T("ANI handler"), 230, 2390 );
 745     int i ;
 746     for (i=0; i < m_ani_images; i ++)
 747         if (my_horse_ani[i].Ok())
 748         {
 749             dc.DrawBitmap( my_horse_ani[i], 230 + i * 2 * my_horse_ani[i].GetWidth() , 2420, TRUE );
 750         }
 751 }
 752
 753 void MyCanvas::CreateAntiAliasedBitmap()
 754 {
 755   wxBitmap bitmap( 300, 300 );
 756
 757   wxMemoryDC dc;
 758
 759   dc.SelectObject( bitmap );
 760
 761   dc.Clear();
 762
 763   dc.SetFont( wxFont( 24, wxDECORATIVE, wxNORMAL, wxNORMAL) );
 764   dc.SetTextForeground( wxT("RED") );
 765   dc.DrawText( _T("This is anti-aliased Text."), 20, 20 );
 766   dc.DrawText( _T("And a Rectangle."), 20, 60 );
 767
 768   dc.SetBrush( *wxRED_BRUSH );
 769   dc.SetPen( *wxTRANSPARENT_PEN );
 770   dc.DrawRoundedRectangle( 20, 100, 200, 180, 20 );
 771
 772   wxImage original= bitmap.ConvertToImage();
 773   wxImage anti( 150, 150 );
 774
 775   /* This is quite slow, but safe. Use wxImage::GetData() for speed instead. */
 776
 777   for (int y = 1; y < 149; y++)
 778     for (int x = 1; x < 149; x++)
 779     {
 780        int red = original.GetRed( x*2, y*2 ) +
 781                  original.GetRed( x*2-1, y*2 ) +
 782                  original.GetRed( x*2, y*2+1 ) +
 783                  original.GetRed( x*2+1, y*2+1 );
 784        red = red/4;
 785
 786        int green = original.GetGreen( x*2, y*2 ) +
 787                    original.GetGreen( x*2-1, y*2 ) +
 788                    original.GetGreen( x*2, y*2+1 ) +
 789                    original.GetGreen( x*2+1, y*2+1 );
 790        green = green/4;
 791
 792        int blue = original.GetBlue( x*2, y*2 ) +
 793                   original.GetBlue( x*2-1, y*2 ) +
 794                   original.GetBlue( x*2, y*2+1 ) +
 795                   original.GetBlue( x*2+1, y*2+1 );
 796        blue = blue/4;
 797        anti.SetRGB( x, y, red, green, blue );
 798     }
 799   my_anti = new wxBitmap(anti);
 800 }
 801
 802 // MyFrame
 803
 804 enum
 805 {
 806     ID_QUIT  = 108,
 807     ID_ABOUT,
 808     ID_NEW,
 809     ID_SHOWRAW
 810 };
 811
 812 IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )
 813
 814 BEGIN_EVENT_TABLE(MyFrame,wxFrame)
 815   EVT_MENU    (ID_ABOUT, MyFrame::OnAbout)
 816   EVT_MENU    (ID_QUIT,  MyFrame::OnQuit)
 817   EVT_MENU    (ID_NEW,  MyFrame::OnNewFrame)
 818 #ifdef wxHAVE_RAW_BITMAP
 819   EVT_MENU    (ID_SHOWRAW,  MyFrame::OnTestRawBitmap)
 820 #endif
 821
 822 #if wxUSE_CLIPBOARD
 823     EVT_MENU(wxID_COPY, MyFrame::OnCopy)
 824     EVT_MENU(wxID_PASTE, MyFrame::OnPaste)
 825 #endif // wxUSE_CLIPBOARD
 826 END_EVENT_TABLE()
 827
 828 MyFrame::MyFrame()
 829        : wxFrame( (wxFrame *)NULL, -1, _T("wxImage sample"),
 830                   wxPoint(20,20), wxSize(470,360) )
 831 {
 832   wxMenuBar *menu_bar = new wxMenuBar();
 833
 834   wxMenu *menuImage = new wxMenu;
 835   menuImage->Append( ID_NEW, _T("&Show any image...\tCtrl-O"));
 836
 837 #ifdef wxHAVE_RAW_BITMAP
 838   menuImage->Append( ID_SHOWRAW, _T("Test &raw bitmap...\tCtrl-R"));
 839 #endif
 840   menuImage->AppendSeparator();
 841   menuImage->Append( ID_ABOUT, _T("&About..."));
 842   menuImage->AppendSeparator();
 843   menuImage->Append( ID_QUIT, _T("E&xit\tCtrl-Q"));
 844   menu_bar->Append(menuImage, _T("&Image"));
 845
 846 #if wxUSE_CLIPBOARD
 847   wxMenu *menuClipboard = new wxMenu;
 848   menuClipboard->Append(wxID_COPY, _T("&Copy test image\tCtrl-C"));
 849   menuClipboard->Append(wxID_PASTE, _T("&Paste image\tCtrl-V"));
 850   menu_bar->Append(menuClipboard, _T("&Clipboard"));
 851 #endif // wxUSE_CLIPBOARD
 852
 853   SetMenuBar( menu_bar );
 854
 855   CreateStatusBar(2);
 856   int widths[] = { -1, 100 };
 857   SetStatusWidths( 2, widths );
 858
 859   m_canvas = new MyCanvas( this, -1, wxPoint(0,0), wxSize(10,10) );
 860
 861   // 500 width * 2500 height
 862   m_canvas->SetScrollbars( 10, 10, 50, 250 );
 863 }
 864
 865 void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
 866 {
 867   Close( TRUE );
 868 }
 869
 870 void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) )
 871 {
 872   (void)wxMessageBox( _T("wxImage demo\n")
 873                       _T("Robert Roebling (c) 1998,2000"),
 874                       _T("About wxImage Demo"), wxICON_INFORMATION | wxOK );
 875 }
 876
 877 void MyFrame::OnNewFrame( wxCommandEvent &WXUNUSED(event) )
 878 {
 879     wxString filename = wxFileSelector(_T("Select image file"));
 880     if ( !filename )
 881         return;
 882
 883     wxImage image;
 884     if ( !image.LoadFile(filename) )
 885     {
 886         wxLogError(_T("Couldn't load image from '%s'."), filename.c_str());
 887
 888         return;
 889     }
 890
 891     (new MyImageFrame(this, wxBitmap(image)))->Show();
 892 }
 893
 894 #ifdef wxHAVE_RAW_BITMAP
 895
 896 void MyFrame::OnTestRawBitmap( wxCommandEvent &event )
 897 {
 898     (new MyRawBitmapFrame(this))->Show();
 899 }
 900
 901 #endif // wxHAVE_RAW_BITMAP
 902
 903 #if wxUSE_CLIPBOARD
 904
 905 void MyFrame::OnCopy(wxCommandEvent& WXUNUSED(event))
 906 {
 907     wxBitmapDataObject *dobjBmp = new wxBitmapDataObject;
 908     dobjBmp->SetBitmap(*m_canvas->my_horse_png);
 909
 910     wxTheClipboard->Open();
 911
 912     if ( !wxTheClipboard->SetData(dobjBmp) )
 913     {
 914         wxLogError(_T("Failed to copy bitmap to clipboard"));
 915     }
 916
 917     wxTheClipboard->Close();
 918 }
 919
 920 void MyFrame::OnPaste(wxCommandEvent& WXUNUSED(event))
 921 {
 922     wxBitmapDataObject dobjBmp;
 923
 924     wxTheClipboard->Open();
 925     if ( !wxTheClipboard->GetData(dobjBmp) )
 926     {
 927         wxLogMessage(_T("No bitmap data in the clipboard"));
 928     }
 929     else
 930     {
 931         (new MyImageFrame(this, dobjBmp.GetBitmap()))->Show();
 932     }
 933     wxTheClipboard->Close();
 934 }
 935
 936 #endif // wxUSE_CLIPBOARD
 937
 938 //-----------------------------------------------------------------------------
 939 // MyApp
 940 //-----------------------------------------------------------------------------
 941
 942 bool MyApp::OnInit()
 943 {
 944 #if wxUSE_LIBPNG
 945   wxImage::AddHandler( new wxPNGHandler );
 946 #endif
 947
 948 #if wxUSE_LIBJPEG
 949   wxImage::AddHandler( new wxJPEGHandler );
 950 #endif
 951
 952 #if wxUSE_LIBTIFF
 953   wxImage::AddHandler( new wxTIFFHandler );
 954 #endif
 955
 956 #if wxUSE_GIF
 957   wxImage::AddHandler( new wxGIFHandler );
 958 #endif
 959
 960 #if wxUSE_PCX
 961   wxImage::AddHandler( new wxPCXHandler );
 962 #endif
 963
 964 #if wxUSE_PNM
 965   wxImage::AddHandler( new wxPNMHandler );
 966 #endif
 967
 968 #if wxUSE_XPM
 969   wxImage::AddHandler( new wxXPMHandler );
 970 #endif
 971
 972 #if wxUSE_ICO_CUR
 973   wxImage::AddHandler( new wxICOHandler );
 974   wxImage::AddHandler( new wxCURHandler );
 975   wxImage::AddHandler( new wxANIHandler );
 976 #endif
 977
 978   wxFrame *frame = new MyFrame();
 979   frame->Show( TRUE );
 980
 981   return TRUE;
 982 }
 983