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 #include "smile.xpm"
  34
  35 #if defined(__WXMSW__)
  36     #ifdef wxHAVE_RAW_BITMAP
  37     #include "wx/rawbmp.h"
  38     #endif
  39 #endif
  40
  41 #if defined(__WXMAC__) || defined(__WXGTK__)
  42     #define wxHAVE_RAW_BITMAP
  43     #include "wx/rawbmp.h"
  44 #endif
  45
  46 // derived classes
  47
  48 class MyFrame;
  49 class MyApp;
  50
  51 // MyCanvas
  52
  53 class MyCanvas: public wxScrolledWindow
  54 {
  55 public:
  56     MyCanvas() {}
  57     MyCanvas( wxWindow *parent, wxWindowID, const wxPoint &pos, const wxSize &size );
  58     ~MyCanvas();
  59     void OnPaint( wxPaintEvent &event );
  60     void CreateAntiAliasedBitmap();
  61
  62     wxBitmap  *my_horse_png;
  63     wxBitmap  *my_horse_jpeg;
  64     wxBitmap  *my_horse_gif;
  65     wxBitmap  *my_horse_bmp;
  66     wxBitmap  *my_horse_bmp2;
  67     wxBitmap  *my_horse_pcx;
  68     wxBitmap  *my_horse_pnm;
  69     wxBitmap  *my_horse_tiff;
  70     wxBitmap  *my_horse_xpm;
  71     wxBitmap  *my_horse_ico32;
  72     wxBitmap  *my_horse_ico16;
  73     wxBitmap  *my_horse_ico;
  74     wxBitmap  *my_horse_cur;
  75     wxBitmap  *my_horse_ani;
  76
  77     wxBitmap  *my_smile_xbm;
  78     wxBitmap  *my_square;
  79     wxBitmap  *my_anti;
  80
  81     int xH, yH ;
  82     int m_ani_images ;
  83
  84 protected:
  85     wxBitmap m_bmpSmileXpm;
  86     wxIcon   m_iconSmileXpm;
  87
  88 private:
  89     DECLARE_DYNAMIC_CLASS(MyCanvas)
  90     DECLARE_EVENT_TABLE()
  91 };
  92
  93
  94 const int nChoices = 8 ;
  95 static const wxString bppchoices[nChoices] =
  96 {
  97     _T("1 bpp color"),
  98     _T("1 bpp B&W"),
  99     _T("4 bpp color"),
 100     _T("8 bpp color"),
 101     _T("8 bpp greyscale"),
 102     _T("8 bpp red"),
 103     _T("8 bpp own palette"),
 104     _T("24 bpp")
 105 };
 106
 107 static const int bppvalues[nChoices] =
 108 {
 109     wxBMP_1BPP,
 110     wxBMP_1BPP_BW,
 111     wxBMP_4BPP,
 112     wxBMP_8BPP,
 113     wxBMP_8BPP_GREY,
 114     wxBMP_8BPP_RED,
 115     wxBMP_8BPP_PALETTE,
 116     wxBMP_24BPP
 117 };
 118
 119 // MyFrame
 120
 121
 122 class MyFrame: public wxFrame
 123 {
 124 public:
 125     MyFrame();
 126
 127     void OnAbout( wxCommandEvent &event );
 128     void OnNewFrame( wxCommandEvent &event );
 129 #ifdef wxHAVE_RAW_BITMAP
 130     void OnTestRawBitmap( wxCommandEvent &event );
 131 #endif // wxHAVE_RAW_BITMAP
 132     void OnQuit( wxCommandEvent &event );
 133
 134 #if wxUSE_CLIPBOARD
 135     void OnCopy(wxCommandEvent& event);
 136     void OnPaste(wxCommandEvent& event);
 137 #endif // wxUSE_CLIPBOARD
 138
 139     MyCanvas         *m_canvas;
 140
 141 private:
 142     DECLARE_DYNAMIC_CLASS(MyFrame)
 143     DECLARE_EVENT_TABLE()
 144 };
 145
 146 class MyImageFrame : public wxFrame
 147 {
 148 public:
 149     MyImageFrame(wxFrame *parent, const wxBitmap& bitmap)
 150         : wxFrame(parent, wxID_ANY, _T("Double click to save"),
 151                   wxDefaultPosition, wxDefaultSize,
 152                   wxCAPTION | wxSYSTEM_MENU | wxCLOSE_BOX),
 153                   m_bitmap(bitmap)
 154     {
 155         SetClientSize(bitmap.GetWidth(), bitmap.GetHeight());
 156     }
 157
 158     void OnEraseBackground(wxEraseEvent& WXUNUSED(event))
 159     {
 160         // do nothing here to be able to see how transparent images are shown
 161     }
 162
 163     void OnPaint(wxPaintEvent& WXUNUSED(event))
 164     {
 165         wxPaintDC dc( this );
 166         dc.DrawBitmap( m_bitmap, 0, 0, true /* use mask */ );
 167     }
 168
 169     void OnSave(wxMouseEvent& WXUNUSED(event))
 170     {
 171         wxImage image = m_bitmap.ConvertToImage();
 172
 173         int bppselection = wxGetSingleChoiceIndex(_T("Set BMP BPP"),
 174                                                   _T("Set BMP BPP"),
 175                                                   nChoices,
 176                                                   bppchoices,
 177                                                   this);
 178         if ( bppselection == -1 )
 179         {
 180             // cancelled
 181             return;
 182         }
 183
 184         image.SetOption(wxIMAGE_OPTION_BMP_FORMAT, bppvalues[bppselection]);
 185
 186         wxString deffilename = bppchoices[bppselection];
 187         deffilename.Replace(wxT(" "), wxT("_"));
 188         deffilename += wxT(".bmp");
 189         wxString savefilename = wxFileSelector( wxT("Save Image"),
 190                                                 wxT(""),
 191                                                 deffilename,
 192                                                 (const wxChar *)NULL,
 193                                             wxT("BMP files (*.bmp)|*.bmp|")
 194                                             wxT("PNG files (*.png)|*.png|")
 195                                             wxT("JPEG files (*.jpg)|*.jpg|")
 196                                             wxT("GIF files (*.gif)|*.gif|")
 197                                             wxT("TIFF files (*.tif)|*.tif|")
 198                                             wxT("PCX files (*.pcx)|*.pcx|")
 199                                             wxT("ICO files (*.ico)|*.ico|")
 200                                             wxT("CUR files (*.cur)|*.cur"),
 201                                                 wxSAVE,
 202                                                 this);
 203
 204         if ( savefilename.empty() )
 205             return;
 206
 207         if ( image.GetOptionInt(wxIMAGE_OPTION_BMP_FORMAT) == wxBMP_8BPP_PALETTE )
 208         {
 209             unsigned char *cmap = new unsigned char [256];
 210             for ( int i = 0; i < 256; i++ )
 211                 cmap[i] = (unsigned char)i;
 212             image.SetPalette(wxPalette(256, cmap, cmap, cmap));
 213
 214             delete cmap;
 215         }
 216
 217         bool loaded;
 218         wxString extension = savefilename.AfterLast('.').Lower();
 219
 220         if (extension == _T("cur"))
 221         {
 222             image.Rescale(32,32);
 223             image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_X, 0);
 224             image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y, 0);
 225             // This shows how you can save an image with explicitly
 226             // specified image format:
 227             loaded = image.SaveFile(savefilename, wxBITMAP_TYPE_CUR);
 228         }
 229         else
 230         {
 231             // This one guesses image format from filename extension
 232             // (it may fail if the extension is not recognized):
 233             loaded = image.SaveFile(savefilename);
 234         }
 235
 236         if ( !loaded )
 237             wxMessageBox(_T("No handler for this file type."),
 238                          _T("File was not saved"),
 239                          wxOK|wxCENTRE, this);
 240     }
 241
 242 private:
 243     wxBitmap m_bitmap;
 244
 245     DECLARE_EVENT_TABLE()
 246 };
 247
 248 #ifdef wxHAVE_RAW_BITMAP
 249
 250 #include "wx/rawbmp.h"
 251
 252 class MyRawBitmapFrame : public wxFrame
 253 {
 254 public:
 255     enum
 256     {
 257         BORDER = 15,
 258         SIZE = 150,
 259         REAL_SIZE = SIZE - 2*BORDER
 260     };
 261
 262     MyRawBitmapFrame(wxFrame *parent)
 263         : wxFrame(parent, wxID_ANY, _T("Raw bitmaps (how exciting)")),
 264           m_bitmap(SIZE, SIZE, 32)
 265     {
 266         SetClientSize(SIZE, SIZE);
 267
 268         // another possibility: wxNativePixelData (don't forget to remove code
 269         // setting alpha in the loop below then)
 270         typedef wxAlphaPixelData Data;
 271
 272         Data data(m_bitmap, wxPoint(BORDER, BORDER), wxSize(REAL_SIZE, REAL_SIZE));
 273         if ( !data )
 274         {
 275             wxLogError(_T("Failed to gain raw access to bitmap data"));
 276             return;
 277         }
 278
 279 //        data.UseAlpha();
 280
 281         Data::Iterator p(data);
 282
 283         for ( int y = 0; y < REAL_SIZE; ++y )
 284         {
 285             Data::Iterator rowStart = p;
 286
 287             int r = y < REAL_SIZE/3 ? 255 : 0,
 288                 g = (REAL_SIZE/3 <= y) && (y < 2*(REAL_SIZE/3)) ? 255 : 0,
 289                 b = 2*(REAL_SIZE/3) <= y ? 255 : 0;
 290
 291             for ( int x = 0; x < REAL_SIZE; ++x )
 292             {
 293                 p.Red() = r;
 294                 p.Green() = g;
 295                 p.Blue() = b;
 296                 p.Alpha() = (Data::Iterator::ChannelType)((x*255.)/REAL_SIZE);
 297
 298                 ++p; // same as p.OffsetX(1)
 299             }
 300
 301             p = rowStart;
 302             p.OffsetY(data, 1);
 303         }
 304     }
 305
 306     void OnPaint(wxPaintEvent& WXUNUSED(event))
 307     {
 308         wxPaintDC dc( this );
 309         dc.DrawText(_T("This is alpha and raw bitmap test"), 0, BORDER);
 310         dc.DrawText(_T("This is alpha and raw bitmap test"), 0, SIZE/2 - BORDER);
 311         dc.DrawText(_T("This is alpha and raw bitmap test"), 0, SIZE - 2*BORDER);
 312         dc.DrawBitmap( m_bitmap, 0, 0, true /* use mask */ );
 313     }
 314
 315 private:
 316     wxBitmap m_bitmap;
 317
 318     DECLARE_EVENT_TABLE()
 319 };
 320
 321 #endif // wxHAVE_RAW_BITMAP
 322
 323 // MyApp
 324
 325 class MyApp: public wxApp
 326 {
 327 public:
 328     virtual bool OnInit();
 329 };
 330
 331 // main program
 332
 333 IMPLEMENT_APP(MyApp)
 334
 335 // MyCanvas
 336
 337 IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxScrolledWindow)
 338
 339 BEGIN_EVENT_TABLE(MyImageFrame, wxFrame)
 340     EVT_ERASE_BACKGROUND(MyImageFrame::OnEraseBackground)
 341     EVT_PAINT(MyImageFrame::OnPaint)
 342     EVT_LEFT_DCLICK(MyImageFrame::OnSave)
 343 END_EVENT_TABLE()
 344
 345 #ifdef wxHAVE_RAW_BITMAP
 346
 347 BEGIN_EVENT_TABLE(MyRawBitmapFrame, wxFrame)
 348     EVT_PAINT(MyRawBitmapFrame::OnPaint)
 349 END_EVENT_TABLE()
 350
 351 #endif // wxHAVE_RAW_BITMAP
 352
 353 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
 354   EVT_PAINT(MyCanvas::OnPaint)
 355 END_EVENT_TABLE()
 356
 357 MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
 358                     const wxPoint &pos, const wxSize &size )
 359         : wxScrolledWindow( parent, id, pos, size, wxSUNKEN_BORDER )
 360           , m_bmpSmileXpm((const char **) smile_xpm)
 361           , m_iconSmileXpm((const char **) smile_xpm)
 362 {
 363     my_horse_png = (wxBitmap*) NULL;
 364     my_horse_jpeg = (wxBitmap*) NULL;
 365     my_horse_gif = (wxBitmap*) NULL;
 366     my_horse_bmp = (wxBitmap*) NULL;
 367     my_horse_bmp2 = (wxBitmap*) NULL;
 368     my_horse_pcx = (wxBitmap*) NULL;
 369     my_horse_pnm = (wxBitmap*) NULL;
 370     my_horse_tiff = (wxBitmap*) NULL;
 371     my_horse_xpm = (wxBitmap*) NULL;
 372     my_horse_ico32 = (wxBitmap*) NULL;
 373     my_horse_ico16 = (wxBitmap*) NULL;
 374     my_horse_ico = (wxBitmap*) NULL;
 375     my_horse_cur = (wxBitmap*) NULL;
 376     my_horse_ani = (wxBitmap*) NULL;
 377
 378     my_smile_xbm = (wxBitmap*) NULL;
 379     my_square = (wxBitmap*) NULL;
 380     my_anti = (wxBitmap*) NULL;
 381
 382     m_ani_images = 0 ;
 383
 384     SetBackgroundColour(* wxWHITE);
 385
 386     wxBitmap bitmap( 100, 100 );
 387
 388     wxMemoryDC dc;
 389     dc.SelectObject( bitmap );
 390     dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) );
 391     dc.SetPen( *wxBLACK_PEN );
 392     dc.DrawRectangle( 0, 0, 100, 100 );
 393     dc.SetBrush( *wxWHITE_BRUSH );
 394     dc.DrawRectangle( 20, 20, 60, 60 );
 395     dc.SelectObject( wxNullBitmap );
 396
 397     // try to find the directory with our images
 398     wxString dir;
 399     if ( wxFile::Exists(wxT("./horse.png")) )
 400         dir = wxT("./");
 401     else if ( wxFile::Exists(wxT("../horse.png")) )
 402         dir = wxT("../");
 403     else
 404         wxLogWarning(wxT("Can't find image files in either '.' or '..'!"));
 405
 406     wxImage image = bitmap.ConvertToImage();
 407
 408 #if wxUSE_LIBPNG
 409     if ( !image.SaveFile( dir + _T("test.png"), wxBITMAP_TYPE_PNG ))
 410         wxLogError(wxT("Can't save file"));
 411
 412     image.Destroy();
 413
 414     if ( image.LoadFile( dir + _T("test.png") ) )
 415         my_square = new wxBitmap( image );
 416
 417     image.Destroy();
 418
 419     if ( !image.LoadFile( dir + _T("horse.png")) )
 420         wxLogError(wxT("Can't load PNG image"));
 421     else
 422         my_horse_png = new wxBitmap( image );
 423 #endif // wxUSE_LIBPNG
 424
 425 #if wxUSE_LIBJPEG
 426     image.Destroy();
 427
 428     if ( !image.LoadFile( dir + _T("horse.jpg")) )
 429         wxLogError(wxT("Can't load JPG image"));
 430     else
 431         my_horse_jpeg = new wxBitmap( image );
 432 #endif // wxUSE_LIBJPEG
 433
 434 #if wxUSE_GIF
 435     image.Destroy();
 436
 437     if ( !image.LoadFile( dir + _T("horse.gif" )) )
 438         wxLogError(wxT("Can't load GIF image"));
 439     else
 440         my_horse_gif = new wxBitmap( image );
 441 #endif
 442
 443 #if wxUSE_PCX
 444     image.Destroy();
 445
 446     if ( !image.LoadFile( dir + _T("horse.pcx"), wxBITMAP_TYPE_PCX ) )
 447         wxLogError(wxT("Can't load PCX image"));
 448     else
 449         my_horse_pcx = new wxBitmap( image );
 450 #endif
 451
 452     image.Destroy();
 453
 454     if ( !image.LoadFile( dir + _T("horse.bmp"), wxBITMAP_TYPE_BMP ) )
 455         wxLogError(wxT("Can't load BMP image"));
 456     else
 457         my_horse_bmp = new wxBitmap( image );
 458
 459 #if wxUSE_XPM
 460     image.Destroy();
 461
 462     if ( !image.LoadFile( dir + _T("horse.xpm"), wxBITMAP_TYPE_XPM ) )
 463         wxLogError(wxT("Can't load XPM image"));
 464     else
 465         my_horse_xpm = new wxBitmap( image );
 466
 467     if ( !image.SaveFile( dir + _T("test.xpm"), wxBITMAP_TYPE_XPM ))
 468         wxLogError(wxT("Can't save file"));
 469 #endif
 470
 471 #if wxUSE_PNM
 472     image.Destroy();
 473
 474     if ( !image.LoadFile( dir + _T("horse.pnm"), wxBITMAP_TYPE_PNM ) )
 475         wxLogError(wxT("Can't load PNM image"));
 476     else
 477         my_horse_pnm = new wxBitmap( image );
 478 #endif
 479
 480 #if wxUSE_LIBTIFF
 481     image.Destroy();
 482
 483     if ( !image.LoadFile( dir + _T("horse.tif"), wxBITMAP_TYPE_TIF ) )
 484         wxLogError(wxT("Can't load TIFF image"));
 485     else
 486         my_horse_tiff = new wxBitmap( image );
 487 #endif
 488
 489     CreateAntiAliasedBitmap();
 490
 491     my_smile_xbm = new wxBitmap( (const char*)smile_bits, smile_width,
 492                                  smile_height, 1 );
 493
 494     // demonstrates XPM automatically using the mask when saving
 495     if ( m_bmpSmileXpm.Ok() )
 496         m_bmpSmileXpm.SaveFile(_T("saved.xpm"), wxBITMAP_TYPE_XPM);
 497
 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         wxFileOffset len = file.Length();
 558         size_t dataSize = (size_t)len;
 559         void *data = malloc(dataSize);
 560         if ( file.Read(data, dataSize) != len )
 561             wxLogError(_T("Reading bitmap file failed"));
 562         else
 563         {
 564             wxMemoryInputStream mis(data, dataSize);
 565             if ( !image.LoadFile(mis) )
 566                 wxLogError(wxT("Can't load BMP image from stream"));
 567             else
 568                 my_horse_bmp2 = new wxBitmap( image );
 569         }
 570
 571         free(data);
 572     }
 573 }
 574
 575 MyCanvas::~MyCanvas()
 576 {
 577     delete my_horse_pnm;
 578     delete my_horse_png;
 579     delete my_horse_jpeg;
 580     delete my_horse_gif;
 581     delete my_horse_bmp;
 582     delete my_horse_bmp2;
 583     delete my_horse_pcx;
 584     delete my_horse_tiff;
 585     delete my_horse_xpm;
 586     delete my_horse_ico32;
 587     delete my_horse_ico16;
 588     delete my_horse_ico;
 589     delete my_horse_cur;
 590     delete [] my_horse_ani;
 591     delete my_smile_xbm;
 592     delete my_square;
 593     delete my_anti;
 594 }
 595
 596 void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
 597 {
 598     wxPaintDC dc( this );
 599     PrepareDC( dc );
 600
 601     dc.DrawText( _T("Loaded image"), 30, 10 );
 602     if (my_square && my_square->Ok()) dc.DrawBitmap( *my_square, 30, 30 );
 603
 604     dc.DrawText( _T("Drawn directly"), 150, 10 );
 605     dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) );
 606     dc.SetPen( *wxBLACK_PEN );
 607     dc.DrawRectangle( 150, 30, 100, 100 );
 608     dc.SetBrush( *wxWHITE_BRUSH );
 609     dc.DrawRectangle( 170, 50, 60, 60 );
 610
 611     if (my_anti && my_anti->Ok())
 612         dc.DrawBitmap( *my_anti, 280, 30 );
 613
 614     dc.DrawText( _T("PNG handler"), 30, 135 );
 615     if (my_horse_png && my_horse_png->Ok())
 616     {
 617         dc.DrawBitmap( *my_horse_png, 30, 150 );
 618         wxRect rect(0,0,100,100);
 619         wxBitmap sub( my_horse_png->GetSubBitmap(rect) );
 620         dc.DrawText( _T("GetSubBitmap()"), 280, 190 );
 621         dc.DrawBitmap( sub, 280, 210 );
 622     }
 623
 624     dc.DrawText( _T("JPEG handler"), 30, 365 );
 625     if (my_horse_jpeg && my_horse_jpeg->Ok())
 626         dc.DrawBitmap( *my_horse_jpeg, 30, 380 );
 627
 628     dc.DrawText( _T("GIF handler"), 30, 595 );
 629     if (my_horse_gif && my_horse_gif->Ok())
 630         dc.DrawBitmap( *my_horse_gif, 30, 610 );
 631
 632     dc.DrawText( _T("PCX handler"), 30, 825 );
 633     if (my_horse_pcx && my_horse_pcx->Ok())
 634         dc.DrawBitmap( *my_horse_pcx, 30, 840 );
 635
 636     dc.DrawText( _T("BMP handler"), 30, 1055 );
 637     if (my_horse_bmp && my_horse_bmp->Ok())
 638         dc.DrawBitmap( *my_horse_bmp, 30, 1070 );
 639
 640     dc.DrawText( _T("BMP read from memory"), 280, 1055 );
 641     if (my_horse_bmp2 && my_horse_bmp2->Ok())
 642         dc.DrawBitmap( *my_horse_bmp2, 280, 1070 );
 643
 644     dc.DrawText( _T("PNM handler"), 30, 1285 );
 645     if (my_horse_pnm && my_horse_pnm->Ok())
 646         dc.DrawBitmap( *my_horse_pnm, 30, 1300 );
 647
 648     dc.DrawText( _T("TIFF handler"), 30, 1515 );
 649     if (my_horse_tiff && my_horse_tiff->Ok())
 650         dc.DrawBitmap( *my_horse_tiff, 30, 1530 );
 651
 652     dc.DrawText( _T("XPM handler"), 30, 1745 );
 653     if (my_horse_xpm && my_horse_xpm->Ok())
 654         dc.DrawBitmap( *my_horse_xpm, 30, 1760 );
 655
 656
 657     if (my_smile_xbm && my_smile_xbm->Ok())
 658     {
 659         dc.DrawText( _T("XBM bitmap"), 30, 1975 );
 660         dc.DrawText( _T("(green on red)"), 30, 1990 );
 661         dc.SetTextForeground( _T("GREEN") );
 662         dc.SetTextBackground( _T("RED") );
 663         dc.DrawBitmap( *my_smile_xbm, 30, 2010 );
 664
 665         dc.SetTextForeground( wxT("BLACK") );
 666         dc.DrawText( _T("After wxImage conversion"), 150, 1975 );
 667         dc.DrawText( _T("(red on white)"), 150, 1990 );
 668         dc.SetTextForeground( wxT("RED") );
 669         wxImage i = my_smile_xbm->ConvertToImage();
 670         i.SetMaskColour( 255, 255, 255 );
 671         i.Replace( 0, 0, 0,
 672                wxRED_PEN->GetColour().Red(),
 673                wxRED_PEN->GetColour().Green(),
 674                wxRED_PEN->GetColour().Blue() );
 675         dc.DrawBitmap( wxBitmap(i), 150, 2010, true );
 676         dc.SetTextForeground( wxT("BLACK") );
 677     }
 678
 679
 680     wxBitmap mono( 60,50,1 );
 681     wxMemoryDC memdc;
 682     memdc.SelectObject( mono );
 683     memdc.SetPen( *wxBLACK_PEN );
 684     memdc.SetBrush( *wxWHITE_BRUSH );
 685     memdc.DrawRectangle( 0,0,60,50 );
 686     memdc.SetTextForeground( *wxBLACK );
 687 #ifndef __WXGTK20__
 688     // I cannot convince GTK2 to draw into mono bitmaps
 689     memdc.DrawText( _T("Hi!"), 5, 5 );
 690 #endif
 691     memdc.SetBrush( *wxBLACK_BRUSH );
 692     memdc.DrawRectangle( 33,5,20,20 );
 693     memdc.SetPen( *wxRED_PEN );
 694     memdc.DrawLine( 5, 42, 50, 42 );
 695     memdc.SelectObject( wxNullBitmap );
 696
 697     if (mono.Ok())
 698     {
 699         dc.DrawText( _T("Mono bitmap"), 30, 2095 );
 700         dc.DrawText( _T("(red on green)"), 30, 2110 );
 701         dc.SetTextForeground( wxT("RED") );
 702         dc.SetTextBackground( wxT("GREEN") );
 703         dc.DrawBitmap( mono, 30, 2130 );
 704
 705         dc.SetTextForeground( wxT("BLACK") );
 706         dc.DrawText( _T("After wxImage conversion"), 150, 2095 );
 707         dc.DrawText( _T("(red on white)"), 150, 2110 );
 708         dc.SetTextForeground( wxT("RED") );
 709         wxImage i = mono.ConvertToImage();
 710         i.SetMaskColour( 255,255,255 );
 711         i.Replace( 0,0,0,
 712                wxRED_PEN->GetColour().Red(),
 713                wxRED_PEN->GetColour().Green(),
 714                wxRED_PEN->GetColour().Blue() );
 715         dc.DrawBitmap( wxBitmap(i), 150, 2130, true );
 716         dc.SetTextForeground( wxT("BLACK") );
 717     }
 718
 719     // For testing transparency
 720     dc.SetBrush( *wxRED_BRUSH );
 721     dc.DrawRectangle( 20, 2220, 560, 68 );
 722
 723     dc.DrawText(_T("XPM bitmap"), 30, 2230 );
 724     if ( m_bmpSmileXpm.Ok() )
 725         dc.DrawBitmap(m_bmpSmileXpm, 30, 2250, true);
 726
 727     dc.DrawText(_T("XPM icon"), 110, 2230 );
 728     if ( m_iconSmileXpm.Ok() )
 729         dc.DrawIcon(m_iconSmileXpm, 110, 2250);
 730
 731     // testing icon -> bitmap conversion
 732     wxBitmap to_blit( m_iconSmileXpm );
 733     if (to_blit.Ok())
 734     {
 735         dc.DrawText( _T("SubBitmap"), 170, 2230 );
 736         wxBitmap sub = to_blit.GetSubBitmap( wxRect(0,0,15,15) );
 737         if (sub.Ok())
 738             dc.DrawBitmap( sub, 170, 2250, true );
 739
 740         dc.DrawText( _T("Enlarged"), 250, 2230 );
 741         dc.SetUserScale( 1.5, 1.5 );
 742         dc.DrawBitmap( to_blit, (int)(250/1.5), (int)(2250/1.5), true );
 743         dc.SetUserScale( 2, 2 );
 744         dc.DrawBitmap( to_blit, (int)(300/2), (int)(2250/2), true );
 745         dc.SetUserScale( 1.0, 1.0 );
 746
 747         dc.DrawText( _T("Blit"), 400, 2230);
 748         wxMemoryDC blit_dc;
 749         blit_dc.SelectObject( to_blit );
 750         dc.Blit( 400, 2250, to_blit.GetWidth(), to_blit.GetHeight(), &blit_dc, 0, 0, wxCOPY, true );
 751         dc.SetUserScale( 1.5, 1.5 );
 752         dc.Blit( (int)(450/1.5), (int)(2250/1.5), to_blit.GetWidth(), to_blit.GetHeight(), &blit_dc, 0, 0, wxCOPY, true );
 753         dc.SetUserScale( 2, 2 );
 754         dc.Blit( (int)(500/2), (int)(2250/2), to_blit.GetWidth(), to_blit.GetHeight(), &blit_dc, 0, 0, wxCOPY, true );
 755         dc.SetUserScale( 1.0, 1.0 );
 756     }
 757
 758     dc.DrawText( _T("ICO handler (1st image)"), 30, 2290 );
 759     if (my_horse_ico32 && my_horse_ico32->Ok())
 760         dc.DrawBitmap( *my_horse_ico32, 30, 2330, true );
 761
 762     dc.DrawText( _T("ICO handler (2nd image)"), 230, 2290 );
 763     if (my_horse_ico16 && my_horse_ico16->Ok())
 764         dc.DrawBitmap( *my_horse_ico16, 230, 2330, true );
 765
 766     dc.DrawText( _T("ICO handler (best image)"), 430, 2290 );
 767     if (my_horse_ico && my_horse_ico->Ok())
 768         dc.DrawBitmap( *my_horse_ico, 430, 2330, true );
 769
 770     dc.DrawText( _T("CUR handler"), 30, 2390 );
 771     if (my_horse_cur && my_horse_cur->Ok())
 772     {
 773         dc.DrawBitmap( *my_horse_cur, 30, 2420, true );
 774         dc.SetPen (*wxRED_PEN);
 775         dc.DrawLine (xH-10,yH,xH+10,yH);
 776         dc.DrawLine (xH,yH-10,xH,yH+10);
 777     }
 778     dc.DrawText( _T("ANI handler"), 230, 2390 );
 779     int i ;
 780     for (i=0; i < m_ani_images; i ++)
 781         if (my_horse_ani[i].Ok())
 782         {
 783             dc.DrawBitmap( my_horse_ani[i], 230 + i * 2 * my_horse_ani[i].GetWidth() , 2420, true );
 784         }
 785 }
 786
 787 void MyCanvas::CreateAntiAliasedBitmap()
 788 {
 789   wxBitmap bitmap( 300, 300 );
 790
 791   wxMemoryDC dc;
 792
 793   dc.SelectObject( bitmap );
 794
 795   dc.Clear();
 796
 797   dc.SetFont( wxFont( 24, wxDECORATIVE, wxNORMAL, wxNORMAL) );
 798   dc.SetTextForeground( wxT("RED") );
 799   dc.DrawText( _T("This is anti-aliased Text."), 20, 20 );
 800   dc.DrawText( _T("And a Rectangle."), 20, 60 );
 801
 802   dc.SetBrush( *wxRED_BRUSH );
 803   dc.SetPen( *wxTRANSPARENT_PEN );
 804   dc.DrawRoundedRectangle( 20, 100, 200, 180, 20 );
 805
 806   wxImage original= bitmap.ConvertToImage();
 807   wxImage anti( 150, 150 );
 808
 809   /* This is quite slow, but safe. Use wxImage::GetData() for speed instead. */
 810
 811   for (int y = 1; y < 149; y++)
 812     for (int x = 1; x < 149; x++)
 813     {
 814        int red = original.GetRed( x*2, y*2 ) +
 815                  original.GetRed( x*2-1, y*2 ) +
 816                  original.GetRed( x*2, y*2+1 ) +
 817                  original.GetRed( x*2+1, y*2+1 );
 818        red = red/4;
 819
 820        int green = original.GetGreen( x*2, y*2 ) +
 821                    original.GetGreen( x*2-1, y*2 ) +
 822                    original.GetGreen( x*2, y*2+1 ) +
 823                    original.GetGreen( x*2+1, y*2+1 );
 824        green = green/4;
 825
 826        int blue = original.GetBlue( x*2, y*2 ) +
 827                   original.GetBlue( x*2-1, y*2 ) +
 828                   original.GetBlue( x*2, y*2+1 ) +
 829                   original.GetBlue( x*2+1, y*2+1 );
 830        blue = blue/4;
 831        anti.SetRGB( x, y, (unsigned char)red, (unsigned char)green, (unsigned char)blue );
 832     }
 833   my_anti = new wxBitmap(anti);
 834 }
 835
 836 // MyFrame
 837
 838 enum
 839 {
 840     ID_QUIT  = 108,
 841     ID_ABOUT,
 842     ID_NEW,
 843     ID_SHOWRAW
 844 };
 845
 846 IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )
 847
 848 BEGIN_EVENT_TABLE(MyFrame,wxFrame)
 849   EVT_MENU    (ID_ABOUT, MyFrame::OnAbout)
 850   EVT_MENU    (ID_QUIT,  MyFrame::OnQuit)
 851   EVT_MENU    (ID_NEW,  MyFrame::OnNewFrame)
 852 #ifdef wxHAVE_RAW_BITMAP
 853   EVT_MENU    (ID_SHOWRAW,  MyFrame::OnTestRawBitmap)
 854 #endif
 855
 856 #if wxUSE_CLIPBOARD
 857     EVT_MENU(wxID_COPY, MyFrame::OnCopy)
 858     EVT_MENU(wxID_PASTE, MyFrame::OnPaste)
 859 #endif // wxUSE_CLIPBOARD
 860 END_EVENT_TABLE()
 861
 862 MyFrame::MyFrame()
 863        : wxFrame( (wxFrame *)NULL, wxID_ANY, _T("wxImage sample"),
 864                   wxPoint(20,20), wxSize(470,360) )
 865 {
 866   wxMenuBar *menu_bar = new wxMenuBar();
 867
 868   wxMenu *menuImage = new wxMenu;
 869   menuImage->Append( ID_NEW, _T("&Show any image...\tCtrl-O"));
 870
 871 #ifdef wxHAVE_RAW_BITMAP
 872   menuImage->Append( ID_SHOWRAW, _T("Test &raw bitmap...\tCtrl-R"));
 873 #endif
 874   menuImage->AppendSeparator();
 875   menuImage->Append( ID_ABOUT, _T("&About..."));
 876   menuImage->AppendSeparator();
 877   menuImage->Append( ID_QUIT, _T("E&xit\tCtrl-Q"));
 878   menu_bar->Append(menuImage, _T("&Image"));
 879
 880 #if wxUSE_CLIPBOARD
 881   wxMenu *menuClipboard = new wxMenu;
 882   menuClipboard->Append(wxID_COPY, _T("&Copy test image\tCtrl-C"));
 883   menuClipboard->Append(wxID_PASTE, _T("&Paste image\tCtrl-V"));
 884   menu_bar->Append(menuClipboard, _T("&Clipboard"));
 885 #endif // wxUSE_CLIPBOARD
 886
 887   SetMenuBar( menu_bar );
 888
 889 #if wxUSE_STATUSBAR
 890   CreateStatusBar(2);
 891   int widths[] = { -1, 100 };
 892   SetStatusWidths( 2, widths );
 893 #endif // wxUSE_STATUSBAR
 894
 895   m_canvas = new MyCanvas( this, wxID_ANY, wxPoint(0,0), wxSize(10,10) );
 896
 897   // 500 width * 2500 height
 898   m_canvas->SetScrollbars( 10, 10, 50, 250 );
 899 }
 900
 901 void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
 902 {
 903   Close( true );
 904 }
 905
 906 void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) )
 907 {
 908   (void)wxMessageBox( _T("wxImage demo\n")
 909                       _T("Robert Roebling (c) 1998,2000"),
 910                       _T("About wxImage Demo"), wxICON_INFORMATION | wxOK );
 911 }
 912
 913 void MyFrame::OnNewFrame( wxCommandEvent &WXUNUSED(event) )
 914 {
 915     wxString filename = wxFileSelector(_T("Select image file"));
 916     if ( !filename )
 917         return;
 918
 919     wxImage image;
 920     if ( !image.LoadFile(filename) )
 921     {
 922         wxLogError(_T("Couldn't load image from '%s'."), filename.c_str());
 923
 924         return;
 925     }
 926
 927     (new MyImageFrame(this, wxBitmap(image)))->Show();
 928 }
 929
 930 #ifdef wxHAVE_RAW_BITMAP
 931
 932 void MyFrame::OnTestRawBitmap( wxCommandEvent &WXUNUSED(event) )
 933 {
 934     (new MyRawBitmapFrame(this))->Show();
 935 }
 936
 937 #endif // wxHAVE_RAW_BITMAP
 938
 939 #if wxUSE_CLIPBOARD
 940
 941 void MyFrame::OnCopy(wxCommandEvent& WXUNUSED(event))
 942 {
 943     wxBitmapDataObject *dobjBmp = new wxBitmapDataObject;
 944     dobjBmp->SetBitmap(*m_canvas->my_horse_png);
 945
 946     wxTheClipboard->Open();
 947
 948     if ( !wxTheClipboard->SetData(dobjBmp) )
 949     {
 950         wxLogError(_T("Failed to copy bitmap to clipboard"));
 951     }
 952
 953     wxTheClipboard->Close();
 954 }
 955
 956 void MyFrame::OnPaste(wxCommandEvent& WXUNUSED(event))
 957 {
 958     wxBitmapDataObject dobjBmp;
 959
 960     wxTheClipboard->Open();
 961     if ( !wxTheClipboard->GetData(dobjBmp) )
 962     {
 963         wxLogMessage(_T("No bitmap data in the clipboard"));
 964     }
 965     else
 966     {
 967         (new MyImageFrame(this, dobjBmp.GetBitmap()))->Show();
 968     }
 969     wxTheClipboard->Close();
 970 }
 971
 972 #endif // wxUSE_CLIPBOARD
 973
 974 //-----------------------------------------------------------------------------
 975 // MyApp
 976 //-----------------------------------------------------------------------------
 977
 978 bool MyApp::OnInit()
 979 {
 980 #if wxUSE_LIBPNG
 981   wxImage::AddHandler( new wxPNGHandler );
 982 #endif
 983
 984 #if wxUSE_LIBJPEG
 985   wxImage::AddHandler( new wxJPEGHandler );
 986 #endif
 987
 988 #if wxUSE_LIBTIFF
 989   wxImage::AddHandler( new wxTIFFHandler );
 990 #endif
 991
 992 #if wxUSE_GIF
 993   wxImage::AddHandler( new wxGIFHandler );
 994 #endif
 995
 996 #if wxUSE_PCX
 997   wxImage::AddHandler( new wxPCXHandler );
 998 #endif
 999
1000 #if wxUSE_PNM
1001   wxImage::AddHandler( new wxPNMHandler );
1002 #endif
1003
1004 #if wxUSE_XPM
1005   wxImage::AddHandler( new wxXPMHandler );
1006 #endif
1007
1008 #if wxUSE_ICO_CUR
1009   wxImage::AddHandler( new wxICOHandler );
1010   wxImage::AddHandler( new wxCURHandler );
1011   wxImage::AddHandler( new wxANIHandler );
1012 #endif
1013
1014   wxFrame *frame = new MyFrame();
1015   frame->Show( true );
1016
1017   return true;
1018 }
1019