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