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     #include "wx/rawbmp.h"
  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         // another possibility: wxNativePixelData (don't forget to remove code
 265         // setting alpha in the loop below then)
 266         typedef wxAlphaPixelData Data;
 267
 268         Data data(m_bitmap, wxPoint(BORDER, BORDER), wxSize(REAL_SIZE, REAL_SIZE));
 269         if ( !data )
 270         {
 271             wxLogError(_T("Failed to gain raw access to bitmap data"));
 272             return;
 273         }
 274
 275         data.UseAlpha();
 276
 277         Data::Iterator p(data);
 278
 279         for ( int y = 0; y < REAL_SIZE; ++y )
 280         {
 281             Data::Iterator rowStart = p;
 282
 283             int r = y < REAL_SIZE/3 ? 255 : 0,
 284                 g = (REAL_SIZE/3 <= y) && (y < 2*(REAL_SIZE/3)) ? 255 : 0,
 285                 b = 2*(REAL_SIZE/3) <= y ? 255 : 0;
 286
 287             for ( int x = 0; x < REAL_SIZE; ++x )
 288             {
 289                 p.Red() = r;
 290                 p.Green() = g;
 291                 p.Blue() = b;
 292                 p.Alpha() = (Data::Iterator::ChannelType)((x*255.)/REAL_SIZE);
 293
 294                 ++p; // same as p.OffsetX(1)
 295             }
 296
 297             p = rowStart;
 298             p.OffsetY(data, 1);
 299         }
 300     }
 301
 302     void OnPaint(wxPaintEvent& WXUNUSED(event))
 303     {
 304         wxPaintDC dc( this );
 305         dc.DrawText(_T("This is alpha and raw bitmap test"), 0, BORDER);
 306         dc.DrawText(_T("This is alpha and raw bitmap test"), 0, SIZE/2 - BORDER);
 307         dc.DrawText(_T("This is alpha and raw bitmap test"), 0, SIZE - 2*BORDER);
 308         dc.DrawBitmap( m_bitmap, 0, 0, TRUE /* use mask */ );
 309     }
 310
 311 private:
 312     wxBitmap m_bitmap;
 313
 314     DECLARE_EVENT_TABLE()
 315 };
 316
 317 #endif // wxHAVE_RAW_BITMAP
 318
 319 // MyApp
 320
 321 class MyApp: public wxApp
 322 {
 323 public:
 324     virtual bool OnInit();
 325 };
 326
 327 // main program
 328
 329 IMPLEMENT_APP(MyApp)
 330
 331 // MyCanvas
 332
 333 IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxScrolledWindow)
 334
 335 BEGIN_EVENT_TABLE(MyImageFrame, wxFrame)
 336     EVT_ERASE_BACKGROUND(MyImageFrame::OnEraseBackground)
 337     EVT_PAINT(MyImageFrame::OnPaint)
 338     EVT_LEFT_DCLICK(MyImageFrame::OnSave)
 339 END_EVENT_TABLE()
 340
 341 #ifdef wxHAVE_RAW_BITMAP
 342
 343 BEGIN_EVENT_TABLE(MyRawBitmapFrame, wxFrame)
 344     EVT_PAINT(MyRawBitmapFrame::OnPaint)
 345 END_EVENT_TABLE()
 346
 347 #endif // wxHAVE_RAW_BITMAP
 348
 349 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
 350   EVT_PAINT(MyCanvas::OnPaint)
 351 END_EVENT_TABLE()
 352
 353 MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
 354                     const wxPoint &pos, const wxSize &size )
 355         : wxScrolledWindow( parent, id, pos, size, wxSUNKEN_BORDER )
 356 #if !defined(__WINDOWS__) || wxUSE_XPM_IN_MSW
 357           , m_bmpSmileXpm((const char **) smile_xpm)
 358           , m_iconSmileXpm((const char **) smile_xpm)
 359 #endif
 360 {
 361     my_horse_png = (wxBitmap*) NULL;
 362     my_horse_jpeg = (wxBitmap*) NULL;
 363     my_horse_gif = (wxBitmap*) NULL;
 364     my_horse_bmp = (wxBitmap*) NULL;
 365     my_horse_bmp2 = (wxBitmap*) NULL;
 366     my_horse_pcx = (wxBitmap*) NULL;
 367     my_horse_pnm = (wxBitmap*) NULL;
 368     my_horse_tiff = (wxBitmap*) NULL;
 369     my_horse_xpm = (wxBitmap*) NULL;
 370     my_horse_ico32 = (wxBitmap*) NULL;
 371     my_horse_ico16 = (wxBitmap*) NULL;
 372     my_horse_ico = (wxBitmap*) NULL;
 373     my_horse_cur = (wxBitmap*) NULL;
 374     my_horse_ani = (wxBitmap*) NULL;
 375
 376     my_smile_xbm = (wxBitmap*) NULL;
 377     my_square = (wxBitmap*) NULL;
 378     my_anti = (wxBitmap*) NULL;
 379
 380     m_ani_images = 0 ;
 381
 382     SetBackgroundColour(* wxWHITE);
 383
 384     wxBitmap bitmap( 100, 100 );
 385
 386     wxMemoryDC dc;
 387     dc.SelectObject( bitmap );
 388     dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) );
 389     dc.SetPen( *wxBLACK_PEN );
 390     dc.DrawRectangle( 0, 0, 100, 100 );
 391     dc.SetBrush( *wxWHITE_BRUSH );
 392     dc.DrawRectangle( 20, 20, 60, 60 );
 393     dc.SelectObject( wxNullBitmap );
 394
 395     // try to find the directory with our images
 396     wxString dir;
 397     if ( wxFile::Exists(wxT("./horse.png")) )
 398         dir = wxT("./");
 399     else if ( wxFile::Exists(wxT("../horse.png")) )
 400         dir = wxT("../");
 401     else
 402         wxLogWarning(wxT("Can't find image files in either '.' or '..'!"));
 403
 404     wxImage image = bitmap.ConvertToImage();
 405
 406 #if wxUSE_LIBPNG
 407     if ( !image.SaveFile( dir + _T("test.png"), wxBITMAP_TYPE_PNG ))
 408         wxLogError(wxT("Can't save file"));
 409
 410     image.Destroy();
 411
 412     if ( image.LoadFile( dir + _T("test.png") ) )
 413         my_square = new wxBitmap( image );
 414
 415     image.Destroy();
 416
 417     if ( !image.LoadFile( dir + _T("horse.png")) )
 418         wxLogError(wxT("Can't load PNG image"));
 419     else
 420         my_horse_png = new wxBitmap( image );
 421 #endif // wxUSE_LIBPNG
 422
 423 #if wxUSE_LIBJPEG
 424     image.Destroy();
 425
 426     if ( !image.LoadFile( dir + _T("horse.jpg")) )
 427         wxLogError(wxT("Can't load JPG image"));
 428     else
 429         my_horse_jpeg = new wxBitmap( image );
 430 #endif // wxUSE_LIBJPEG
 431
 432 #if wxUSE_GIF
 433     image.Destroy();
 434
 435     if ( !image.LoadFile( dir + _T("horse.gif" )) )
 436         wxLogError(wxT("Can't load GIF image"));
 437     else
 438         my_horse_gif = new wxBitmap( image );
 439 #endif
 440
 441 #if wxUSE_PCX
 442     image.Destroy();
 443
 444     if ( !image.LoadFile( dir + _T("horse.pcx"), wxBITMAP_TYPE_PCX ) )
 445         wxLogError(wxT("Can't load PCX image"));
 446     else
 447         my_horse_pcx = new wxBitmap( image );
 448 #endif
 449
 450     image.Destroy();
 451
 452     if ( !image.LoadFile( dir + _T("horse.bmp"), wxBITMAP_TYPE_BMP ) )
 453         wxLogError(wxT("Can't load BMP image"));
 454     else
 455         my_horse_bmp = new wxBitmap( image );
 456
 457 #if wxUSE_XPM
 458     image.Destroy();
 459
 460     if ( !image.LoadFile( dir + _T("horse.xpm"), wxBITMAP_TYPE_XPM ) )
 461         wxLogError(wxT("Can't load XPM image"));
 462     else
 463         my_horse_xpm = new wxBitmap( image );
 464
 465     if ( !image.SaveFile( dir + _T("test.xpm"), wxBITMAP_TYPE_XPM ))
 466         wxLogError(wxT("Can't save file"));
 467 #endif
 468
 469 #if wxUSE_PNM
 470     image.Destroy();
 471
 472     if ( !image.LoadFile( dir + _T("horse.pnm"), wxBITMAP_TYPE_PNM ) )
 473         wxLogError(wxT("Can't load PNM image"));
 474     else
 475         my_horse_pnm = new wxBitmap( image );
 476 #endif
 477
 478 #if wxUSE_LIBTIFF
 479     image.Destroy();
 480
 481     if ( !image.LoadFile( dir + _T("horse.tif"), wxBITMAP_TYPE_TIF ) )
 482         wxLogError(wxT("Can't load TIFF image"));
 483     else
 484         my_horse_tiff = new wxBitmap( image );
 485 #endif
 486
 487     CreateAntiAliasedBitmap();
 488
 489     my_smile_xbm = new wxBitmap( (const char*)smile_bits, smile_width,
 490                                  smile_height, 1 );
 491
 492 #if !defined(__WINDOWS__) || wxUSE_XPM_IN_MSW
 493     // demonstrates XPM automatically using the mask when saving
 494     if ( m_bmpSmileXpm.Ok() )
 495         m_bmpSmileXpm.SaveFile(_T("saved.xpm"), wxBITMAP_TYPE_XPM);
 496 #endif
 497
 498 #if wxUSE_ICO_CUR
 499     image.Destroy();
 500
 501     if ( !image.LoadFile( dir + _T("horse.ico"), wxBITMAP_TYPE_ICO, 0 ) )
 502         wxLogError(wxT("Can't load first ICO image"));
 503     else
 504         my_horse_ico32 = new wxBitmap( image );
 505
 506     image.Destroy();
 507
 508     if ( !image.LoadFile( dir + _T("horse.ico"), wxBITMAP_TYPE_ICO, 1 ) )
 509         wxLogError(wxT("Can't load second ICO image"));
 510     else
 511         my_horse_ico16 = new wxBitmap( image );
 512
 513     image.Destroy();
 514
 515     if ( !image.LoadFile( dir + _T("horse.ico") ) )
 516         wxLogError(wxT("Can't load best ICO image"));
 517     else
 518         my_horse_ico = new wxBitmap( image );
 519
 520     image.Destroy();
 521
 522     if ( !image.LoadFile( dir + _T("horse.cur"), wxBITMAP_TYPE_CUR ) )
 523         wxLogError(wxT("Can't load best ICO image"));
 524     else
 525     {
 526         my_horse_cur = new wxBitmap( image );
 527         xH = 30 + image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X) ;
 528         yH = 2420 + image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y) ;
 529     }
 530
 531     m_ani_images = wxImage::GetImageCount ( dir + _T("horse3.ani"), wxBITMAP_TYPE_ANI );
 532     if (m_ani_images==0)
 533         wxLogError(wxT("No ANI-format images found"));
 534     else
 535         my_horse_ani = new wxBitmap [m_ani_images];
 536     int i ;
 537     for (i=0; i < m_ani_images; i++)
 538     {
 539         image.Destroy();
 540         if (!image.LoadFile( dir + _T("horse3.ani"), wxBITMAP_TYPE_ANI, i ))
 541         {
 542             wxString tmp = wxT("Can't load image number ");
 543             tmp << i ;
 544             wxLogError(tmp);
 545         }
 546         else
 547             my_horse_ani [i] = wxBitmap( image );
 548     }
 549 #endif // wxUSE_ICO_CUR
 550
 551     image.Destroy();
 552
 553     // test image loading from stream
 554     wxFile file(dir + _T("horse.bmp"));
 555     if ( file.IsOpened() )
 556     {
 557         off_t len = file.Length();
 558         void *data = malloc(len);
 559         if ( file.Read(data, len) != len )
 560             wxLogError(_T("Reading bitmap file failed"));
 561         else
 562         {
 563             wxMemoryInputStream mis(data, len);
 564             if ( !image.LoadFile(mis) )
 565                 wxLogError(wxT("Can't load BMP image from stream"));
 566             else
 567                 my_horse_bmp2 = new wxBitmap( image );
 568         }
 569
 570         free(data);
 571     }
 572 }
 573
 574 MyCanvas::~MyCanvas()
 575 {
 576     delete my_horse_pnm;
 577     delete my_horse_png;
 578     delete my_horse_jpeg;
 579     delete my_horse_gif;
 580     delete my_horse_bmp;
 581     delete my_horse_bmp2;
 582     delete my_horse_pcx;
 583     delete my_horse_tiff;
 584     delete my_horse_xpm;
 585     delete my_horse_ico32;
 586     delete my_horse_ico16;
 587     delete my_horse_ico;
 588     delete my_horse_cur;
 589     delete [] my_horse_ani;
 590     delete my_smile_xbm;
 591     delete my_square;
 592     delete my_anti;
 593 }
 594
 595 void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
 596 {
 597     wxPaintDC dc( this );
 598     PrepareDC( dc );
 599
 600     dc.DrawText( _T("Loaded image"), 30, 10 );
 601     if (my_square && my_square->Ok()) dc.DrawBitmap( *my_square, 30, 30 );
 602
 603     dc.DrawText( _T("Drawn directly"), 150, 10 );
 604     dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) );
 605     dc.SetPen( *wxBLACK_PEN );
 606     dc.DrawRectangle( 150, 30, 100, 100 );
 607     dc.SetBrush( *wxWHITE_BRUSH );
 608     dc.DrawRectangle( 170, 50, 60, 60 );
 609
 610     if (my_anti && my_anti->Ok())
 611         dc.DrawBitmap( *my_anti, 280, 30 );
 612
 613     dc.DrawText( _T("PNG handler"), 30, 135 );
 614     if (my_horse_png && my_horse_png->Ok())
 615     {
 616         dc.DrawBitmap( *my_horse_png, 30, 150 );
 617         wxRect rect(0,0,100,100);
 618         wxBitmap sub( my_horse_png->GetSubBitmap(rect) );
 619         dc.DrawText( _T("GetSubBitmap()"), 280, 190 );
 620         dc.DrawBitmap( sub, 280, 210 );
 621     }
 622
 623     dc.DrawText( _T("JPEG handler"), 30, 365 );
 624     if (my_horse_jpeg && my_horse_jpeg->Ok())
 625         dc.DrawBitmap( *my_horse_jpeg, 30, 380 );
 626
 627     dc.DrawText( _T("GIF handler"), 30, 595 );
 628     if (my_horse_gif && my_horse_gif->Ok())
 629         dc.DrawBitmap( *my_horse_gif, 30, 610 );
 630
 631     dc.DrawText( _T("PCX handler"), 30, 825 );
 632     if (my_horse_pcx && my_horse_pcx->Ok())
 633         dc.DrawBitmap( *my_horse_pcx, 30, 840 );
 634
 635     dc.DrawText( _T("BMP handler"), 30, 1055 );
 636     if (my_horse_bmp && my_horse_bmp->Ok())
 637         dc.DrawBitmap( *my_horse_bmp, 30, 1070 );
 638
 639     dc.DrawText( _T("BMP read from memory"), 280, 1055 );
 640     if (my_horse_bmp2 && my_horse_bmp2->Ok())
 641         dc.DrawBitmap( *my_horse_bmp2, 280, 1070 );
 642
 643     dc.DrawText( _T("PNM handler"), 30, 1285 );
 644     if (my_horse_pnm && my_horse_pnm->Ok())
 645         dc.DrawBitmap( *my_horse_pnm, 30, 1300 );
 646
 647     dc.DrawText( _T("TIFF handler"), 30, 1515 );
 648     if (my_horse_tiff && my_horse_tiff->Ok())
 649         dc.DrawBitmap( *my_horse_tiff, 30, 1530 );
 650
 651     dc.DrawText( _T("XPM handler"), 30, 1745 );
 652     if (my_horse_xpm && my_horse_xpm->Ok())
 653         dc.DrawBitmap( *my_horse_xpm, 30, 1760 );
 654
 655
 656     if (my_smile_xbm && my_smile_xbm->Ok())
 657     {
 658         dc.DrawText( _T("XBM bitmap"), 30, 1975 );
 659         dc.DrawText( _T("(green on red)"), 30, 1990 );
 660         dc.SetTextForeground( _T("GREEN") );
 661         dc.SetTextBackground( _T("RED") );
 662         dc.DrawBitmap( *my_smile_xbm, 30, 2010 );
 663
 664         dc.SetTextForeground( wxT("BLACK") );
 665         dc.DrawText( _T("After wxImage conversion"), 150, 1975 );
 666         dc.DrawText( _T("(red on white)"), 150, 1990 );
 667         dc.SetTextForeground( wxT("RED") );
 668         wxImage i = my_smile_xbm->ConvertToImage();
 669         i.SetMaskColour( 255, 255, 255 );
 670         i.Replace( 0, 0, 0,
 671                wxRED_PEN->GetColour().Red(),
 672                wxRED_PEN->GetColour().Green(),
 673                wxRED_PEN->GetColour().Blue() );
 674         dc.DrawBitmap( wxBitmap(i), 150, 2010, TRUE );
 675         dc.SetTextForeground( wxT("BLACK") );
 676     }
 677
 678
 679     wxBitmap mono( 60,50,1 );
 680     wxMemoryDC memdc;
 681     memdc.SelectObject( mono );
 682     memdc.SetPen( *wxBLACK_PEN );
 683     memdc.SetBrush( *wxWHITE_BRUSH );
 684     memdc.DrawRectangle( 0,0,60,50 );
 685     memdc.SetTextForeground( *wxBLACK );
 686     memdc.DrawText( _T("Hi!"), 5, 5 );
 687     memdc.SetBrush( *wxBLACK_BRUSH );
 688     memdc.DrawRectangle( 33,5,20,20 );
 689     memdc.SetPen( *wxRED_PEN );
 690     memdc.DrawLine( 5, 42, 50, 42 );
 691     memdc.SelectObject( wxNullBitmap );
 692
 693     if (mono.Ok())
 694     {
 695         dc.DrawText( _T("Mono bitmap"), 30, 2095 );
 696         dc.DrawText( _T("(red on green)"), 30, 2110 );
 697         dc.SetTextForeground( wxT("RED") );
 698         dc.SetTextBackground( wxT("GREEN") );
 699         dc.DrawBitmap( mono, 30, 2130 );
 700
 701         dc.SetTextForeground( wxT("BLACK") );
 702         dc.DrawText( _T("After wxImage conversion"), 150, 2095 );
 703         dc.DrawText( _T("(red on white)"), 150, 2110 );
 704         dc.SetTextForeground( wxT("RED") );
 705         wxImage i = mono.ConvertToImage();
 706         i.SetMaskColour( 255,255,255 );
 707         i.Replace( 0,0,0,
 708                wxRED_PEN->GetColour().Red(),
 709                wxRED_PEN->GetColour().Green(),
 710                wxRED_PEN->GetColour().Blue() );
 711         dc.DrawBitmap( wxBitmap(i), 150, 2130, TRUE );
 712         dc.SetTextForeground( wxT("BLACK") );
 713     }
 714
 715     dc.DrawText(_T("XPM bitmap"), 30, 2230);
 716     if ( m_bmpSmileXpm.Ok() )
 717     {
 718         dc.DrawBitmap(m_bmpSmileXpm, 30, 2250, TRUE);
 719     }
 720
 721     dc.DrawText(_T("XPM icon"), 150, 2230);
 722     if ( m_iconSmileXpm.Ok() )
 723     {
 724         dc.DrawIcon(m_iconSmileXpm, 150, 2250);
 725     }
 726
 727     dc.DrawText( _T("ICO handler (1st image)"), 30, 2290 );
 728     if (my_horse_ico32 && my_horse_ico32->Ok())
 729         dc.DrawBitmap( *my_horse_ico32, 30, 2330, TRUE );
 730
 731     dc.DrawText( _T("ICO handler (2nd image)"), 230, 2290 );
 732     if (my_horse_ico16 && my_horse_ico16->Ok())
 733         dc.DrawBitmap( *my_horse_ico16, 230, 2330, TRUE );
 734
 735     dc.DrawText( _T("ICO handler (best image)"), 430, 2290 );
 736     if (my_horse_ico && my_horse_ico->Ok())
 737         dc.DrawBitmap( *my_horse_ico, 430, 2330, TRUE );
 738
 739     dc.DrawText( _T("CUR handler"), 30, 2390 );
 740     if (my_horse_cur && my_horse_cur->Ok())
 741     {
 742         dc.DrawBitmap( *my_horse_cur, 30, 2420, TRUE );
 743         dc.SetPen (*wxRED_PEN);
 744         dc.DrawLine (xH-10,yH,xH+10,yH);
 745         dc.DrawLine (xH,yH-10,xH,yH+10);
 746     }
 747     dc.DrawText( _T("ANI handler"), 230, 2390 );
 748     int i ;
 749     for (i=0; i < m_ani_images; i ++)
 750         if (my_horse_ani[i].Ok())
 751         {
 752             dc.DrawBitmap( my_horse_ani[i], 230 + i * 2 * my_horse_ani[i].GetWidth() , 2420, TRUE );
 753         }
 754 }
 755
 756 void MyCanvas::CreateAntiAliasedBitmap()
 757 {
 758   wxBitmap bitmap( 300, 300 );
 759
 760   wxMemoryDC dc;
 761
 762   dc.SelectObject( bitmap );
 763
 764   dc.Clear();
 765
 766   dc.SetFont( wxFont( 24, wxDECORATIVE, wxNORMAL, wxNORMAL) );
 767   dc.SetTextForeground( wxT("RED") );
 768   dc.DrawText( _T("This is anti-aliased Text."), 20, 20 );
 769   dc.DrawText( _T("And a Rectangle."), 20, 60 );
 770
 771   dc.SetBrush( *wxRED_BRUSH );
 772   dc.SetPen( *wxTRANSPARENT_PEN );
 773   dc.DrawRoundedRectangle( 20, 100, 200, 180, 20 );
 774
 775   wxImage original= bitmap.ConvertToImage();
 776   wxImage anti( 150, 150 );
 777
 778   /* This is quite slow, but safe. Use wxImage::GetData() for speed instead. */
 779
 780   for (int y = 1; y < 149; y++)
 781     for (int x = 1; x < 149; x++)
 782     {
 783        int red = original.GetRed( x*2, y*2 ) +
 784                  original.GetRed( x*2-1, y*2 ) +
 785                  original.GetRed( x*2, y*2+1 ) +
 786                  original.GetRed( x*2+1, y*2+1 );
 787        red = red/4;
 788
 789        int green = original.GetGreen( x*2, y*2 ) +
 790                    original.GetGreen( x*2-1, y*2 ) +
 791                    original.GetGreen( x*2, y*2+1 ) +
 792                    original.GetGreen( x*2+1, y*2+1 );
 793        green = green/4;
 794
 795        int blue = original.GetBlue( x*2, y*2 ) +
 796                   original.GetBlue( x*2-1, y*2 ) +
 797                   original.GetBlue( x*2, y*2+1 ) +
 798                   original.GetBlue( x*2+1, y*2+1 );
 799        blue = blue/4;
 800        anti.SetRGB( x, y, red, green, blue );
 801     }
 802   my_anti = new wxBitmap(anti);
 803 }
 804
 805 // MyFrame
 806
 807 enum
 808 {
 809     ID_QUIT  = 108,
 810     ID_ABOUT,
 811     ID_NEW,
 812     ID_SHOWRAW
 813 };
 814
 815 IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )
 816
 817 BEGIN_EVENT_TABLE(MyFrame,wxFrame)
 818   EVT_MENU    (ID_ABOUT, MyFrame::OnAbout)
 819   EVT_MENU    (ID_QUIT,  MyFrame::OnQuit)
 820   EVT_MENU    (ID_NEW,  MyFrame::OnNewFrame)
 821 #ifdef wxHAVE_RAW_BITMAP
 822   EVT_MENU    (ID_SHOWRAW,  MyFrame::OnTestRawBitmap)
 823 #endif
 824
 825 #if wxUSE_CLIPBOARD
 826     EVT_MENU(wxID_COPY, MyFrame::OnCopy)
 827     EVT_MENU(wxID_PASTE, MyFrame::OnPaste)
 828 #endif // wxUSE_CLIPBOARD
 829 END_EVENT_TABLE()
 830
 831 MyFrame::MyFrame()
 832        : wxFrame( (wxFrame *)NULL, -1, _T("wxImage sample"),
 833                   wxPoint(20,20), wxSize(470,360) )
 834 {
 835   wxMenuBar *menu_bar = new wxMenuBar();
 836
 837   wxMenu *menuImage = new wxMenu;
 838   menuImage->Append( ID_NEW, _T("&Show any image...\tCtrl-O"));
 839
 840 #ifdef wxHAVE_RAW_BITMAP
 841   menuImage->Append( ID_SHOWRAW, _T("Test &raw bitmap...\tCtrl-R"));
 842 #endif
 843   menuImage->AppendSeparator();
 844   menuImage->Append( ID_ABOUT, _T("&About..."));
 845   menuImage->AppendSeparator();
 846   menuImage->Append( ID_QUIT, _T("E&xit\tCtrl-Q"));
 847   menu_bar->Append(menuImage, _T("&Image"));
 848
 849 #if wxUSE_CLIPBOARD
 850   wxMenu *menuClipboard = new wxMenu;
 851   menuClipboard->Append(wxID_COPY, _T("&Copy test image\tCtrl-C"));
 852   menuClipboard->Append(wxID_PASTE, _T("&Paste image\tCtrl-V"));
 853   menu_bar->Append(menuClipboard, _T("&Clipboard"));
 854 #endif // wxUSE_CLIPBOARD
 855
 856   SetMenuBar( menu_bar );
 857
 858   CreateStatusBar(2);
 859   int widths[] = { -1, 100 };
 860   SetStatusWidths( 2, widths );
 861
 862   m_canvas = new MyCanvas( this, -1, wxPoint(0,0), wxSize(10,10) );
 863
 864   // 500 width * 2500 height
 865   m_canvas->SetScrollbars( 10, 10, 50, 250 );
 866 }
 867
 868 void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
 869 {
 870   Close( TRUE );
 871 }
 872
 873 void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) )
 874 {
 875   (void)wxMessageBox( _T("wxImage demo\n")
 876                       _T("Robert Roebling (c) 1998,2000"),
 877                       _T("About wxImage Demo"), wxICON_INFORMATION | wxOK );
 878 }
 879
 880 void MyFrame::OnNewFrame( wxCommandEvent &WXUNUSED(event) )
 881 {
 882     wxString filename = wxFileSelector(_T("Select image file"));
 883     if ( !filename )
 884         return;
 885
 886     wxImage image;
 887     if ( !image.LoadFile(filename) )
 888     {
 889         wxLogError(_T("Couldn't load image from '%s'."), filename.c_str());
 890
 891         return;
 892     }
 893
 894     (new MyImageFrame(this, wxBitmap(image)))->Show();
 895 }
 896
 897 #ifdef wxHAVE_RAW_BITMAP
 898
 899 void MyFrame::OnTestRawBitmap( wxCommandEvent &event )
 900 {
 901     (new MyRawBitmapFrame(this))->Show();
 902 }
 903
 904 #endif // wxHAVE_RAW_BITMAP
 905
 906 #if wxUSE_CLIPBOARD
 907
 908 void MyFrame::OnCopy(wxCommandEvent& WXUNUSED(event))
 909 {
 910     wxBitmapDataObject *dobjBmp = new wxBitmapDataObject;
 911     dobjBmp->SetBitmap(*m_canvas->my_horse_png);
 912
 913     wxTheClipboard->Open();
 914
 915     if ( !wxTheClipboard->SetData(dobjBmp) )
 916     {
 917         wxLogError(_T("Failed to copy bitmap to clipboard"));
 918     }
 919
 920     wxTheClipboard->Close();
 921 }
 922
 923 void MyFrame::OnPaste(wxCommandEvent& WXUNUSED(event))
 924 {
 925     wxBitmapDataObject dobjBmp;
 926
 927     wxTheClipboard->Open();
 928     if ( !wxTheClipboard->GetData(dobjBmp) )
 929     {
 930         wxLogMessage(_T("No bitmap data in the clipboard"));
 931     }
 932     else
 933     {
 934         (new MyImageFrame(this, dobjBmp.GetBitmap()))->Show();
 935     }
 936     wxTheClipboard->Close();
 937 }
 938
 939 #endif // wxUSE_CLIPBOARD
 940
 941 //-----------------------------------------------------------------------------
 942 // MyApp
 943 //-----------------------------------------------------------------------------
 944
 945 bool MyApp::OnInit()
 946 {
 947 #if wxUSE_LIBPNG
 948   wxImage::AddHandler( new wxPNGHandler );
 949 #endif
 950
 951 #if wxUSE_LIBJPEG
 952   wxImage::AddHandler( new wxJPEGHandler );
 953 #endif
 954
 955 #if wxUSE_LIBTIFF
 956   wxImage::AddHandler( new wxTIFFHandler );
 957 #endif
 958
 959 #if wxUSE_GIF
 960   wxImage::AddHandler( new wxGIFHandler );
 961 #endif
 962
 963 #if wxUSE_PCX
 964   wxImage::AddHandler( new wxPCXHandler );
 965 #endif
 966
 967 #if wxUSE_PNM
 968   wxImage::AddHandler( new wxPNMHandler );
 969 #endif
 970
 971 #if wxUSE_XPM
 972   wxImage::AddHandler( new wxXPMHandler );
 973 #endif
 974
 975 #if wxUSE_ICO_CUR
 976   wxImage::AddHandler( new wxICOHandler );
 977   wxImage::AddHandler( new wxCURHandler );
 978   wxImage::AddHandler( new wxANIHandler );
 979 #endif
 980
 981   wxFrame *frame = new MyFrame();
 982   frame->Show( TRUE );
 983
 984   return TRUE;
 985 }
 986