samples/image/image.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        samples/image/image.cpp
   3 // Purpose:     sample showing operations with wxImage
   4 // Author:      Robert Roebling
   5 // Modified by:
   6 // Created:     1998
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998-2005 Robert Roebling
   9 // License:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx/wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifdef __BORLANDC__
  16 #pragma hdrstop
  17 #endif
  18
  19 #ifndef WX_PRECOMP
  20 #include "wx/wx.h"
  21 #endif
  22
  23 #include "wx/image.h"
  24 #include "wx/file.h"
  25 #include "wx/filename.h"
  26 #include "wx/mstream.h"
  27 #include "wx/wfstream.h"
  28 #include "wx/quantize.h"
  29
  30 #if wxUSE_CLIPBOARD
  31     #include "wx/dataobj.h"
  32     #include "wx/clipbrd.h"
  33 #endif // wxUSE_CLIPBOARD
  34
  35 #include "smile.xbm"
  36 #include "smile.xpm"
  37
  38 #if defined(__WXMSW__)
  39     #ifdef wxHAVE_RAW_BITMAP
  40     #include "wx/rawbmp.h"
  41     #endif
  42 #endif
  43
  44 #if defined(__WXMAC__) || defined(__WXGTK__)
  45     #define wxHAVE_RAW_BITMAP
  46     #include "wx/rawbmp.h"
  47 #endif
  48
  49 // derived classes
  50
  51 class MyFrame;
  52 class MyApp;
  53
  54 // MyCanvas
  55
  56 class MyCanvas: public wxScrolledWindow
  57 {
  58 public:
  59     MyCanvas() {}
  60     MyCanvas( wxWindow *parent, wxWindowID, const wxPoint &pos, const wxSize &size );
  61     ~MyCanvas();
  62     void OnPaint( wxPaintEvent &event );
  63     void CreateAntiAliasedBitmap();
  64
  65     wxBitmap  *my_horse_png;
  66     wxBitmap  *my_horse_jpeg;
  67     wxBitmap  *my_horse_gif;
  68     wxBitmap  *my_horse_bmp;
  69     wxBitmap  *my_horse_bmp2;
  70     wxBitmap  *my_horse_pcx;
  71     wxBitmap  *my_horse_pnm;
  72     wxBitmap  *my_horse_tiff;
  73     wxBitmap  *my_horse_xpm;
  74     wxBitmap  *my_horse_ico32;
  75     wxBitmap  *my_horse_ico16;
  76     wxBitmap  *my_horse_ico;
  77     wxBitmap  *my_horse_cur;
  78     wxBitmap  *my_horse_ani;
  79
  80     wxBitmap  *my_smile_xbm;
  81     wxBitmap  *my_square;
  82     wxBitmap  *my_anti;
  83
  84     wxBitmap  *my_horse_asciigrey_pnm;
  85     wxBitmap  *my_horse_rawgrey_pnm;
  86
  87     wxBitmap  *colorized_horse_jpeg;
  88
  89     int xH, yH ;
  90     int m_ani_images ;
  91
  92 protected:
  93     wxBitmap m_bmpSmileXpm;
  94     wxIcon   m_iconSmileXpm;
  95
  96 private:
  97     DECLARE_DYNAMIC_CLASS(MyCanvas)
  98     DECLARE_EVENT_TABLE()
  99 };
 100
 101
 102 // MyFrame
 103
 104
 105 class MyFrame: public wxFrame
 106 {
 107 public:
 108     MyFrame();
 109
 110     void OnAbout( wxCommandEvent &event );
 111     void OnNewFrame( wxCommandEvent &event );
 112 #ifdef wxHAVE_RAW_BITMAP
 113     void OnTestRawBitmap( wxCommandEvent &event );
 114 #endif // wxHAVE_RAW_BITMAP
 115     void OnQuit( wxCommandEvent &event );
 116
 117 #if wxUSE_CLIPBOARD
 118     void OnCopy(wxCommandEvent& event);
 119     void OnPaste(wxCommandEvent& event);
 120 #endif // wxUSE_CLIPBOARD
 121
 122     MyCanvas         *m_canvas;
 123
 124 private:
 125     DECLARE_DYNAMIC_CLASS(MyFrame)
 126     DECLARE_EVENT_TABLE()
 127 };
 128
 129 class MyImageFrame : public wxFrame
 130 {
 131 public:
 132     MyImageFrame(wxFrame *parent, const wxBitmap& bitmap)
 133         : wxFrame(parent, wxID_ANY, _T("Double click to save"),
 134                   wxDefaultPosition, wxDefaultSize,
 135                   wxCAPTION | wxSYSTEM_MENU | wxCLOSE_BOX),
 136                   m_bitmap(bitmap)
 137     {
 138         SetClientSize(bitmap.GetWidth(), bitmap.GetHeight());
 139     }
 140
 141     void OnEraseBackground(wxEraseEvent& WXUNUSED(event))
 142     {
 143         // do nothing here to be able to see how transparent images are shown
 144     }
 145
 146     void OnPaint(wxPaintEvent& WXUNUSED(event))
 147     {
 148         wxPaintDC dc( this );
 149         dc.DrawBitmap( m_bitmap, 0, 0, true /* use mask */ );
 150     }
 151
 152     void OnSave(wxMouseEvent& WXUNUSED(event))
 153     {
 154 #if wxUSE_FILEDLG
 155         wxImage image = m_bitmap.ConvertToImage();
 156
 157         wxString savefilename = wxFileSelector( wxT("Save Image"),
 158                                                 wxEmptyString,
 159                                                 wxEmptyString,
 160                                                 (const wxChar *)NULL,
 161                                                 wxT("BMP files (*.bmp)|*.bmp|")
 162                                                 wxT("PNG files (*.png)|*.png|")
 163                                                 wxT("JPEG files (*.jpg)|*.jpg|")
 164                                                 wxT("GIF files (*.gif)|*.gif|")
 165                                                 wxT("TIFF files (*.tif)|*.tif|")
 166                                                 wxT("PCX files (*.pcx)|*.pcx|")
 167                                                 wxT("ICO files (*.ico)|*.ico|")
 168                                                 wxT("CUR files (*.cur)|*.cur"),
 169                                                 wxSAVE,
 170                                                 this);
 171
 172         if ( savefilename.empty() )
 173             return;
 174
 175         wxString extension;
 176         wxFileName::SplitPath(savefilename, NULL, NULL, &extension);
 177
 178         bool saved = false;
 179         if ( extension == _T("bpp") )
 180         {
 181             static const int bppvalues[] =
 182             {
 183                 wxBMP_1BPP,
 184                 wxBMP_1BPP_BW,
 185                 wxBMP_4BPP,
 186                 wxBMP_8BPP,
 187                 wxBMP_8BPP_GREY,
 188                 wxBMP_8BPP_RED,
 189                 wxBMP_8BPP_PALETTE,
 190                 wxBMP_24BPP
 191             };
 192
 193             const wxString bppchoices[] =
 194             {
 195                 _T("1 bpp color"),
 196                 _T("1 bpp B&W"),
 197                 _T("4 bpp color"),
 198                 _T("8 bpp color"),
 199                 _T("8 bpp greyscale"),
 200                 _T("8 bpp red"),
 201                 _T("8 bpp own palette"),
 202                 _T("24 bpp")
 203             };
 204
 205             int bppselection = wxGetSingleChoiceIndex(_T("Set BMP BPP"),
 206                                                       _T("Image sample: save file"),
 207                                                       WXSIZEOF(bppchoices),
 208                                                       bppchoices,
 209                                                       this);
 210             if ( bppselection != -1 )
 211             {
 212                 int format = bppvalues[bppselection];
 213                 image.SetOption(wxIMAGE_OPTION_BMP_FORMAT, format);
 214
 215                 if ( format == wxBMP_8BPP_PALETTE )
 216                 {
 217                     unsigned char *cmap = new unsigned char [256];
 218                     for ( int i = 0; i < 256; i++ )
 219                         cmap[i] = (unsigned char)i;
 220                     image.SetPalette(wxPalette(256, cmap, cmap, cmap));
 221
 222                     delete[] cmap;
 223                 }
 224             }
 225         }
 226         else if ( extension == _T("png") )
 227         {
 228             static const int pngvalues[] =
 229             {
 230                 wxPNG_TYPE_COLOUR,
 231                 wxPNG_TYPE_COLOUR,
 232                 wxPNG_TYPE_GREY,
 233                 wxPNG_TYPE_GREY,
 234                 wxPNG_TYPE_GREY_RED,
 235                 wxPNG_TYPE_GREY_RED,
 236             };
 237
 238             const wxString pngchoices[] =
 239             {
 240                 _T("Colour 8bpp"),
 241                 _T("Colour 16bpp"),
 242                 _T("Grey 8bpp"),
 243                 _T("Grey 16bpp"),
 244                 _T("Grey red 8bpp"),
 245                 _T("Grey red 16bpp"),
 246             };
 247
 248             int sel = wxGetSingleChoiceIndex(_T("Set PNG format"),
 249                                              _T("Image sample: save file"),
 250                                              WXSIZEOF(pngchoices),
 251                                              pngchoices,
 252                                              this);
 253             if ( sel != -1 )
 254             {
 255                 image.SetOption(wxIMAGE_OPTION_PNG_FORMAT, pngvalues[sel]);
 256                 image.SetOption(wxIMAGE_OPTION_PNG_BITDEPTH, sel % 2 ? 16 : 8);
 257             }
 258         }
 259         else if ( extension == _T("cur") )
 260         {
 261             image.Rescale(32,32);
 262             image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_X, 0);
 263             image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y, 0);
 264             // This shows how you can save an image with explicitly
 265             // specified image format:
 266             saved = image.SaveFile(savefilename, wxBITMAP_TYPE_CUR);
 267         }
 268
 269         if ( !saved )
 270         {
 271             // This one guesses image format from filename extension
 272             // (it may fail if the extension is not recognized):
 273             image.SaveFile(savefilename);
 274         }
 275 #endif // wxUSE_FILEDLG
 276     }
 277
 278 private:
 279     wxBitmap m_bitmap;
 280
 281     DECLARE_EVENT_TABLE()
 282 };
 283
 284 #ifdef wxHAVE_RAW_BITMAP
 285
 286 #include "wx/rawbmp.h"
 287
 288 class MyRawBitmapFrame : public wxFrame
 289 {
 290 public:
 291     enum
 292     {
 293         BORDER = 15,
 294         SIZE = 150,
 295         REAL_SIZE = SIZE - 2*BORDER
 296     };
 297
 298     MyRawBitmapFrame(wxFrame *parent)
 299         : wxFrame(parent, wxID_ANY, _T("Raw bitmaps (how exciting)")),
 300           m_bitmap(SIZE, SIZE, 32)
 301     {
 302         SetClientSize(SIZE, SIZE);
 303
 304         // another possibility: wxNativePixelData (don't forget to remove code
 305         // setting alpha in the loop below then)
 306         typedef wxAlphaPixelData Data;
 307
 308         Data data(m_bitmap, wxPoint(BORDER, BORDER), wxSize(REAL_SIZE, REAL_SIZE));
 309         if ( !data )
 310         {
 311             wxLogError(_T("Failed to gain raw access to bitmap data"));
 312             return;
 313         }
 314
 315         data.UseAlpha();
 316
 317         Data::Iterator p(data);
 318
 319         for ( int y = 0; y < REAL_SIZE; ++y )
 320         {
 321             Data::Iterator rowStart = p;
 322
 323             int r = y < REAL_SIZE/3 ? 255 : 0,
 324                 g = (REAL_SIZE/3 <= y) && (y < 2*(REAL_SIZE/3)) ? 255 : 0,
 325                 b = 2*(REAL_SIZE/3) <= y ? 255 : 0;
 326
 327             for ( int x = 0; x < REAL_SIZE; ++x )
 328             {
 329                 // note that RGB must be premultiplied by alpha
 330                 unsigned a = (Data::Iterator::ChannelType)((x*255.)/REAL_SIZE);
 331                 p.Red() = r * a / 256;
 332                 p.Green() = g * a / 256;
 333                 p.Blue() = b * a / 256;
 334                 p.Alpha() = a;
 335
 336                 ++p; // same as p.OffsetX(1)
 337             }
 338
 339             p = rowStart;
 340             p.OffsetY(data, 1);
 341         }
 342     }
 343
 344     void OnPaint(wxPaintEvent& WXUNUSED(event))
 345     {
 346         wxPaintDC dc( this );
 347         dc.DrawText(_T("This is alpha and raw bitmap test"), 0, BORDER);
 348         dc.DrawText(_T("This is alpha and raw bitmap test"), 0, SIZE/2 - BORDER);
 349         dc.DrawText(_T("This is alpha and raw bitmap test"), 0, SIZE - 2*BORDER);
 350         dc.DrawBitmap( m_bitmap, 0, 0, true /* use mask */ );
 351     }
 352
 353 private:
 354     wxBitmap m_bitmap;
 355
 356     DECLARE_EVENT_TABLE()
 357 };
 358
 359 #endif // wxHAVE_RAW_BITMAP
 360
 361 // MyApp
 362
 363 class MyApp: public wxApp
 364 {
 365 public:
 366     virtual bool OnInit();
 367 };
 368
 369 // main program
 370
 371 IMPLEMENT_APP(MyApp)
 372
 373 // MyCanvas
 374
 375 IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxScrolledWindow)
 376
 377 BEGIN_EVENT_TABLE(MyImageFrame, wxFrame)
 378     EVT_ERASE_BACKGROUND(MyImageFrame::OnEraseBackground)
 379     EVT_PAINT(MyImageFrame::OnPaint)
 380     EVT_LEFT_DCLICK(MyImageFrame::OnSave)
 381 END_EVENT_TABLE()
 382
 383 #ifdef wxHAVE_RAW_BITMAP
 384
 385 BEGIN_EVENT_TABLE(MyRawBitmapFrame, wxFrame)
 386     EVT_PAINT(MyRawBitmapFrame::OnPaint)
 387 END_EVENT_TABLE()
 388
 389 #endif // wxHAVE_RAW_BITMAP
 390
 391 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
 392   EVT_PAINT(MyCanvas::OnPaint)
 393 END_EVENT_TABLE()
 394
 395 MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
 396                     const wxPoint &pos, const wxSize &size )
 397         : wxScrolledWindow( parent, id, pos, size, wxSUNKEN_BORDER )
 398           , m_bmpSmileXpm((const char **) smile_xpm)
 399           , m_iconSmileXpm((const char **) smile_xpm)
 400 {
 401     my_horse_png = (wxBitmap*) NULL;
 402     my_horse_jpeg = (wxBitmap*) NULL;
 403     my_horse_gif = (wxBitmap*) NULL;
 404     my_horse_bmp = (wxBitmap*) NULL;
 405     my_horse_bmp2 = (wxBitmap*) NULL;
 406     my_horse_pcx = (wxBitmap*) NULL;
 407     my_horse_pnm = (wxBitmap*) NULL;
 408     my_horse_tiff = (wxBitmap*) NULL;
 409     my_horse_xpm = (wxBitmap*) NULL;
 410     my_horse_ico32 = (wxBitmap*) NULL;
 411     my_horse_ico16 = (wxBitmap*) NULL;
 412     my_horse_ico = (wxBitmap*) NULL;
 413     my_horse_cur = (wxBitmap*) NULL;
 414     my_horse_ani = (wxBitmap*) NULL;
 415     colorized_horse_jpeg = (wxBitmap*) NULL;
 416
 417     my_smile_xbm = (wxBitmap*) NULL;
 418     my_square = (wxBitmap*) NULL;
 419     my_anti = (wxBitmap*) NULL;
 420
 421     my_horse_asciigrey_pnm = (wxBitmap*) NULL;
 422     my_horse_rawgrey_pnm = (wxBitmap*) NULL;
 423
 424     m_ani_images = 0 ;
 425
 426     SetBackgroundColour(* wxWHITE);
 427
 428     wxBitmap bitmap( 100, 100 );
 429
 430     wxMemoryDC dc;
 431     dc.SelectObject( bitmap );
 432     dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) );
 433     dc.SetPen( *wxBLACK_PEN );
 434     dc.DrawRectangle( 0, 0, 100, 100 );
 435     dc.SetBrush( *wxWHITE_BRUSH );
 436     dc.DrawRectangle( 20, 20, 60, 60 );
 437     dc.SelectObject( wxNullBitmap );
 438
 439     // try to find the directory with our images
 440     wxString dir;
 441     if ( wxFile::Exists(wxT("./horse.png")) )
 442         dir = wxT("./");
 443     else if ( wxFile::Exists(wxT("../horse.png")) )
 444         dir = wxT("../");
 445     else
 446         wxLogWarning(wxT("Can't find image files in either '.' or '..'!"));
 447
 448     wxImage image = bitmap.ConvertToImage();
 449
 450 #if wxUSE_LIBPNG
 451     if ( !image.SaveFile( dir + _T("test.png"), wxBITMAP_TYPE_PNG ))
 452         wxLogError(wxT("Can't save file"));
 453
 454     image.Destroy();
 455
 456     if ( image.LoadFile( dir + _T("test.png") ) )
 457         my_square = new wxBitmap( image );
 458
 459     image.Destroy();
 460
 461     if ( !image.LoadFile( dir + _T("horse.png")) )
 462         wxLogError(wxT("Can't load PNG image"));
 463     else
 464         my_horse_png = new wxBitmap( image );
 465 #endif // wxUSE_LIBPNG
 466
 467 #if wxUSE_LIBJPEG
 468     image.Destroy();
 469
 470     if ( !image.LoadFile( dir + _T("horse.jpg")) )
 471         wxLogError(wxT("Can't load JPG image"));
 472     else
 473     {
 474         my_horse_jpeg = new wxBitmap( image );
 475         // Colorize by rotating green hue to red
 476         wxImage::HSVValue greenHSV = wxImage::RGBtoHSV(wxImage::RGBValue(0, 255, 0));
 477         wxImage::HSVValue redHSV = wxImage::RGBtoHSV(wxImage::RGBValue(255, 0, 0));
 478         image.RotateHue(redHSV.hue - greenHSV.hue);
 479         colorized_horse_jpeg = new wxBitmap( image );
 480     }
 481 #endif // wxUSE_LIBJPEG
 482
 483 #if wxUSE_GIF
 484     image.Destroy();
 485
 486     if ( !image.LoadFile( dir + _T("horse.gif" )) )
 487         wxLogError(wxT("Can't load GIF image"));
 488     else
 489         my_horse_gif = new wxBitmap( image );
 490 #endif
 491
 492 #if wxUSE_PCX
 493     image.Destroy();
 494
 495     if ( !image.LoadFile( dir + _T("horse.pcx"), wxBITMAP_TYPE_PCX ) )
 496         wxLogError(wxT("Can't load PCX image"));
 497     else
 498         my_horse_pcx = new wxBitmap( image );
 499 #endif
 500
 501     image.Destroy();
 502
 503     if ( !image.LoadFile( dir + _T("horse.bmp"), wxBITMAP_TYPE_BMP ) )
 504         wxLogError(wxT("Can't load BMP image"));
 505     else
 506         my_horse_bmp = new wxBitmap( image );
 507
 508 #if wxUSE_XPM
 509     image.Destroy();
 510
 511     if ( !image.LoadFile( dir + _T("horse.xpm"), wxBITMAP_TYPE_XPM ) )
 512         wxLogError(wxT("Can't load XPM image"));
 513     else
 514         my_horse_xpm = new wxBitmap( image );
 515
 516     if ( !image.SaveFile( dir + _T("test.xpm"), wxBITMAP_TYPE_XPM ))
 517         wxLogError(wxT("Can't save file"));
 518 #endif
 519
 520 #if wxUSE_PNM
 521     image.Destroy();
 522
 523     if ( !image.LoadFile( dir + _T("horse.pnm"), wxBITMAP_TYPE_PNM ) )
 524         wxLogError(wxT("Can't load PNM image"));
 525     else
 526         my_horse_pnm = new wxBitmap( image );
 527
 528     image.Destroy();
 529
 530     if ( !image.LoadFile( dir + _T("horse_ag.pnm"), wxBITMAP_TYPE_PNM ) )
 531         wxLogError(wxT("Can't load PNM image"));
 532     else
 533         my_horse_asciigrey_pnm = new wxBitmap( image );
 534
 535     image.Destroy();
 536
 537     if ( !image.LoadFile( dir + _T("horse_rg.pnm"), wxBITMAP_TYPE_PNM ) )
 538         wxLogError(wxT("Can't load PNM image"));
 539     else
 540         my_horse_rawgrey_pnm = new wxBitmap( image );
 541 #endif
 542
 543 #if wxUSE_LIBTIFF
 544     image.Destroy();
 545
 546     if ( !image.LoadFile( dir + _T("horse.tif"), wxBITMAP_TYPE_TIF ) )
 547         wxLogError(wxT("Can't load TIFF image"));
 548     else
 549         my_horse_tiff = new wxBitmap( image );
 550 #endif
 551
 552     CreateAntiAliasedBitmap();
 553
 554     my_smile_xbm = new wxBitmap( (const char*)smile_bits, smile_width,
 555                                  smile_height, 1 );
 556
 557     // demonstrates XPM automatically using the mask when saving
 558     if ( m_bmpSmileXpm.Ok() )
 559         m_bmpSmileXpm.SaveFile(_T("saved.xpm"), wxBITMAP_TYPE_XPM);
 560
 561 #if wxUSE_ICO_CUR
 562     image.Destroy();
 563
 564     if ( !image.LoadFile( dir + _T("horse.ico"), wxBITMAP_TYPE_ICO, 0 ) )
 565         wxLogError(wxT("Can't load first ICO image"));
 566     else
 567         my_horse_ico32 = new wxBitmap( image );
 568
 569     image.Destroy();
 570
 571     if ( !image.LoadFile( dir + _T("horse.ico"), wxBITMAP_TYPE_ICO, 1 ) )
 572         wxLogError(wxT("Can't load second ICO image"));
 573     else
 574         my_horse_ico16 = new wxBitmap( image );
 575
 576     image.Destroy();
 577
 578     if ( !image.LoadFile( dir + _T("horse.ico") ) )
 579         wxLogError(wxT("Can't load best ICO image"));
 580     else
 581         my_horse_ico = new wxBitmap( image );
 582
 583     image.Destroy();
 584
 585     if ( !image.LoadFile( dir + _T("horse.cur"), wxBITMAP_TYPE_CUR ) )
 586         wxLogError(wxT("Can't load best ICO image"));
 587     else
 588     {
 589         my_horse_cur = new wxBitmap( image );
 590         xH = 30 + image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X) ;
 591         yH = 2420 + image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y) ;
 592     }
 593
 594     m_ani_images = wxImage::GetImageCount ( dir + _T("horse3.ani"), wxBITMAP_TYPE_ANI );
 595     if (m_ani_images==0)
 596         wxLogError(wxT("No ANI-format images found"));
 597     else
 598         my_horse_ani = new wxBitmap [m_ani_images];
 599     int i ;
 600     for (i=0; i < m_ani_images; i++)
 601     {
 602         image.Destroy();
 603         if (!image.LoadFile( dir + _T("horse3.ani"), wxBITMAP_TYPE_ANI, i ))
 604         {
 605             wxString tmp = wxT("Can't load image number ");
 606             tmp << i ;
 607             wxLogError(tmp);
 608         }
 609         else
 610             my_horse_ani [i] = wxBitmap( image );
 611     }
 612 #endif // wxUSE_ICO_CUR
 613
 614     image.Destroy();
 615
 616     // test image loading from stream
 617     wxFile file(dir + _T("horse.bmp"));
 618     if ( file.IsOpened() )
 619     {
 620         wxFileOffset len = file.Length();
 621         size_t dataSize = (size_t)len;
 622         void *data = malloc(dataSize);
 623         if ( file.Read(data, dataSize) != len )
 624             wxLogError(_T("Reading bitmap file failed"));
 625         else
 626         {
 627             wxMemoryInputStream mis(data, dataSize);
 628             if ( !image.LoadFile(mis) )
 629                 wxLogError(wxT("Can't load BMP image from stream"));
 630             else
 631                 my_horse_bmp2 = new wxBitmap( image );
 632         }
 633
 634         free(data);
 635     }
 636 }
 637
 638 MyCanvas::~MyCanvas()
 639 {
 640     delete my_horse_pnm;
 641     delete my_horse_png;
 642     delete my_horse_jpeg;
 643     delete my_horse_gif;
 644     delete my_horse_bmp;
 645     delete my_horse_bmp2;
 646     delete my_horse_pcx;
 647     delete my_horse_tiff;
 648     delete my_horse_xpm;
 649     delete my_horse_ico32;
 650     delete my_horse_ico16;
 651     delete my_horse_ico;
 652     delete my_horse_cur;
 653     delete [] my_horse_ani;
 654     delete my_smile_xbm;
 655     delete my_square;
 656     delete my_anti;
 657     delete my_horse_asciigrey_pnm;
 658     delete my_horse_rawgrey_pnm;
 659     delete colorized_horse_jpeg;
 660 }
 661
 662 void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
 663 {
 664     wxPaintDC dc( this );
 665     PrepareDC( dc );
 666
 667     dc.DrawText( _T("Loaded image"), 30, 10 );
 668     if (my_square && my_square->Ok()) dc.DrawBitmap( *my_square, 30, 30 );
 669
 670     dc.DrawText( _T("Drawn directly"), 150, 10 );
 671     dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) );
 672     dc.SetPen( *wxBLACK_PEN );
 673     dc.DrawRectangle( 150, 30, 100, 100 );
 674     dc.SetBrush( *wxWHITE_BRUSH );
 675     dc.DrawRectangle( 170, 50, 60, 60 );
 676
 677     if (my_anti && my_anti->Ok())
 678         dc.DrawBitmap( *my_anti, 280, 30 );
 679
 680     dc.DrawText( _T("PNG handler"), 30, 135 );
 681     if (my_horse_png && my_horse_png->Ok())
 682     {
 683         dc.DrawBitmap( *my_horse_png, 30, 150 );
 684         wxRect rect(0,0,100,100);
 685         wxBitmap sub( my_horse_png->GetSubBitmap(rect) );
 686         dc.DrawText( _T("GetSubBitmap()"), 280, 190 );
 687         dc.DrawBitmap( sub, 280, 210 );
 688     }
 689
 690     dc.DrawText( _T("JPEG handler"), 30, 365 );
 691     if (my_horse_jpeg && my_horse_jpeg->Ok())
 692         dc.DrawBitmap( *my_horse_jpeg, 30, 380 );
 693
 694     dc.DrawText( _T("GIF handler"), 30, 595 );
 695     if (my_horse_gif && my_horse_gif->Ok())
 696         dc.DrawBitmap( *my_horse_gif, 30, 610 );
 697
 698     dc.DrawText( _T("PCX handler"), 30, 825 );
 699     if (my_horse_pcx && my_horse_pcx->Ok())
 700         dc.DrawBitmap( *my_horse_pcx, 30, 840 );
 701
 702     dc.DrawText( _T("BMP handler"), 30, 1055 );
 703     if (my_horse_bmp && my_horse_bmp->Ok())
 704         dc.DrawBitmap( *my_horse_bmp, 30, 1070 );
 705
 706     dc.DrawText( _T("BMP read from memory"), 280, 1055 );
 707     if (my_horse_bmp2 && my_horse_bmp2->Ok())
 708         dc.DrawBitmap( *my_horse_bmp2, 280, 1070 );
 709
 710     dc.DrawText( _T("PNM handler"), 30, 1285 );
 711     if (my_horse_pnm && my_horse_pnm->Ok())
 712         dc.DrawBitmap( *my_horse_pnm, 30, 1300 );
 713
 714     dc.DrawText( _T("PNM handler (ascii grey)"), 280, 1285 );
 715     if (my_horse_asciigrey_pnm && my_horse_asciigrey_pnm->Ok())
 716         dc.DrawBitmap( *my_horse_asciigrey_pnm, 280, 1300 );
 717
 718     dc.DrawText( _T("PNM handler (raw grey)"), 530, 1285 );
 719     if (my_horse_rawgrey_pnm && my_horse_rawgrey_pnm->Ok())
 720         dc.DrawBitmap( *my_horse_rawgrey_pnm, 530, 1300 );
 721
 722     dc.DrawText( _T("TIFF handler"), 30, 1515 );
 723     if (my_horse_tiff && my_horse_tiff->Ok())
 724         dc.DrawBitmap( *my_horse_tiff, 30, 1530 );
 725
 726     dc.DrawText( _T("XPM handler"), 30, 1745 );
 727     if (my_horse_xpm && my_horse_xpm->Ok())
 728         dc.DrawBitmap( *my_horse_xpm, 30, 1760 );
 729
 730
 731     if (my_smile_xbm && my_smile_xbm->Ok())
 732     {
 733         dc.DrawText( _T("XBM bitmap"), 30, 1975 );
 734         dc.DrawText( _T("(green on red)"), 30, 1990 );
 735         dc.SetTextForeground( _T("GREEN") );
 736         dc.SetTextBackground( _T("RED") );
 737         dc.DrawBitmap( *my_smile_xbm, 30, 2010 );
 738
 739         dc.SetTextForeground( wxT("BLACK") );
 740         dc.DrawText( _T("After wxImage conversion"), 150, 1975 );
 741         dc.DrawText( _T("(red on white)"), 150, 1990 );
 742         dc.SetTextForeground( wxT("RED") );
 743         wxImage i = my_smile_xbm->ConvertToImage();
 744         i.SetMaskColour( 255, 255, 255 );
 745         i.Replace( 0, 0, 0,
 746                wxRED_PEN->GetColour().Red(),
 747                wxRED_PEN->GetColour().Green(),
 748                wxRED_PEN->GetColour().Blue() );
 749         dc.DrawBitmap( wxBitmap(i), 150, 2010, true );
 750         dc.SetTextForeground( wxT("BLACK") );
 751     }
 752
 753
 754     wxBitmap mono( 60,50,1 );
 755     wxMemoryDC memdc;
 756     memdc.SelectObject( mono );
 757     memdc.SetPen( *wxBLACK_PEN );
 758     memdc.SetBrush( *wxWHITE_BRUSH );
 759     memdc.DrawRectangle( 0,0,60,50 );
 760     memdc.SetTextForeground( *wxBLACK );
 761 #ifndef __WXGTK20__
 762     // I cannot convince GTK2 to draw into mono bitmaps
 763     memdc.DrawText( _T("Hi!"), 5, 5 );
 764 #endif
 765     memdc.SetBrush( *wxBLACK_BRUSH );
 766     memdc.DrawRectangle( 33,5,20,20 );
 767     memdc.SetPen( *wxRED_PEN );
 768     memdc.DrawLine( 5, 42, 50, 42 );
 769     memdc.SelectObject( wxNullBitmap );
 770
 771     if (mono.Ok())
 772     {
 773         dc.DrawText( _T("Mono bitmap"), 30, 2095 );
 774         dc.DrawText( _T("(red on green)"), 30, 2110 );
 775         dc.SetTextForeground( wxT("RED") );
 776         dc.SetTextBackground( wxT("GREEN") );
 777         dc.DrawBitmap( mono, 30, 2130 );
 778
 779         dc.SetTextForeground( wxT("BLACK") );
 780         dc.DrawText( _T("After wxImage conversion"), 150, 2095 );
 781         dc.DrawText( _T("(red on white)"), 150, 2110 );
 782         dc.SetTextForeground( wxT("RED") );
 783         wxImage i = mono.ConvertToImage();
 784         i.SetMaskColour( 255,255,255 );
 785         i.Replace( 0,0,0,
 786                wxRED_PEN->GetColour().Red(),
 787                wxRED_PEN->GetColour().Green(),
 788                wxRED_PEN->GetColour().Blue() );
 789         dc.DrawBitmap( wxBitmap(i), 150, 2130, true );
 790         dc.SetTextForeground( wxT("BLACK") );
 791     }
 792
 793     // For testing transparency
 794     dc.SetBrush( *wxRED_BRUSH );
 795     dc.DrawRectangle( 20, 2220, 560, 68 );
 796
 797     dc.DrawText(_T("XPM bitmap"), 30, 2230 );
 798     if ( m_bmpSmileXpm.Ok() )
 799         dc.DrawBitmap(m_bmpSmileXpm, 30, 2250, true);
 800
 801     dc.DrawText(_T("XPM icon"), 110, 2230 );
 802     if ( m_iconSmileXpm.Ok() )
 803         dc.DrawIcon(m_iconSmileXpm, 110, 2250);
 804
 805     // testing icon -> bitmap conversion
 806     wxBitmap to_blit( m_iconSmileXpm );
 807     if (to_blit.Ok())
 808     {
 809         dc.DrawText( _T("SubBitmap"), 170, 2230 );
 810         wxBitmap sub = to_blit.GetSubBitmap( wxRect(0,0,15,15) );
 811         if (sub.Ok())
 812             dc.DrawBitmap( sub, 170, 2250, true );
 813
 814         dc.DrawText( _T("Enlarged"), 250, 2230 );
 815         dc.SetUserScale( 1.5, 1.5 );
 816         dc.DrawBitmap( to_blit, (int)(250/1.5), (int)(2250/1.5), true );
 817         dc.SetUserScale( 2, 2 );
 818         dc.DrawBitmap( to_blit, (int)(300/2), (int)(2250/2), true );
 819         dc.SetUserScale( 1.0, 1.0 );
 820
 821         dc.DrawText( _T("Blit"), 400, 2230);
 822         wxMemoryDC blit_dc;
 823         blit_dc.SelectObject( to_blit );
 824         dc.Blit( 400, 2250, to_blit.GetWidth(), to_blit.GetHeight(), &blit_dc, 0, 0, wxCOPY, true );
 825         dc.SetUserScale( 1.5, 1.5 );
 826         dc.Blit( (int)(450/1.5), (int)(2250/1.5), to_blit.GetWidth(), to_blit.GetHeight(), &blit_dc, 0, 0, wxCOPY, true );
 827         dc.SetUserScale( 2, 2 );
 828         dc.Blit( (int)(500/2), (int)(2250/2), to_blit.GetWidth(), to_blit.GetHeight(), &blit_dc, 0, 0, wxCOPY, true );
 829         dc.SetUserScale( 1.0, 1.0 );
 830     }
 831
 832     dc.DrawText( _T("ICO handler (1st image)"), 30, 2290 );
 833     if (my_horse_ico32 && my_horse_ico32->Ok())
 834         dc.DrawBitmap( *my_horse_ico32, 30, 2330, true );
 835
 836     dc.DrawText( _T("ICO handler (2nd image)"), 230, 2290 );
 837     if (my_horse_ico16 && my_horse_ico16->Ok())
 838         dc.DrawBitmap( *my_horse_ico16, 230, 2330, true );
 839
 840     dc.DrawText( _T("ICO handler (best image)"), 430, 2290 );
 841     if (my_horse_ico && my_horse_ico->Ok())
 842         dc.DrawBitmap( *my_horse_ico, 430, 2330, true );
 843
 844     dc.DrawText( _T("CUR handler"), 30, 2390 );
 845     if (my_horse_cur && my_horse_cur->Ok())
 846     {
 847         dc.DrawBitmap( *my_horse_cur, 30, 2420, true );
 848         dc.SetPen (*wxRED_PEN);
 849         dc.DrawLine (xH-10,yH,xH+10,yH);
 850         dc.DrawLine (xH,yH-10,xH,yH+10);
 851     }
 852     dc.DrawText( _T("ANI handler"), 230, 2390 );
 853     int i ;
 854     for (i=0; i < m_ani_images; i ++)
 855         if (my_horse_ani[i].Ok())
 856         {
 857             dc.DrawBitmap( my_horse_ani[i], 230 + i * 2 * my_horse_ani[i].GetWidth() , 2420, true );
 858         }
 859 #if wxUSE_LIBJPEG
 860     if (colorized_horse_jpeg)
 861     {
 862         dc.DrawText( _T("Colorize image by rotating green hue to red"), 30, 2490 );
 863         dc.DrawBitmap( *colorized_horse_jpeg, 30, 2520 );
 864     }
 865 #endif // wxUSE_LIBJPEG
 866
 867 }
 868
 869 void MyCanvas::CreateAntiAliasedBitmap()
 870 {
 871   wxBitmap bitmap( 300, 300 );
 872
 873   wxMemoryDC dc;
 874
 875   dc.SelectObject( bitmap );
 876
 877   dc.Clear();
 878
 879   dc.SetFont( wxFont( 24, wxDECORATIVE, wxNORMAL, wxNORMAL) );
 880   dc.SetTextForeground( wxT("RED") );
 881   dc.DrawText( _T("This is anti-aliased Text."), 20, 20 );
 882   dc.DrawText( _T("And a Rectangle."), 20, 60 );
 883
 884   dc.SetBrush( *wxRED_BRUSH );
 885   dc.SetPen( *wxTRANSPARENT_PEN );
 886   dc.DrawRoundedRectangle( 20, 100, 200, 180, 20 );
 887
 888   wxImage original= bitmap.ConvertToImage();
 889   wxImage anti( 150, 150 );
 890
 891   /* This is quite slow, but safe. Use wxImage::GetData() for speed instead. */
 892
 893   for (int y = 1; y < 149; y++)
 894     for (int x = 1; x < 149; x++)
 895     {
 896        int red = original.GetRed( x*2, y*2 ) +
 897                  original.GetRed( x*2-1, y*2 ) +
 898                  original.GetRed( x*2, y*2+1 ) +
 899                  original.GetRed( x*2+1, y*2+1 );
 900        red = red/4;
 901
 902        int green = original.GetGreen( x*2, y*2 ) +
 903                    original.GetGreen( x*2-1, y*2 ) +
 904                    original.GetGreen( x*2, y*2+1 ) +
 905                    original.GetGreen( x*2+1, y*2+1 );
 906        green = green/4;
 907
 908        int blue = original.GetBlue( x*2, y*2 ) +
 909                   original.GetBlue( x*2-1, y*2 ) +
 910                   original.GetBlue( x*2, y*2+1 ) +
 911                   original.GetBlue( x*2+1, y*2+1 );
 912        blue = blue/4;
 913        anti.SetRGB( x, y, (unsigned char)red, (unsigned char)green, (unsigned char)blue );
 914     }
 915   my_anti = new wxBitmap(anti);
 916 }
 917
 918 // MyFrame
 919
 920 enum
 921 {
 922     ID_QUIT  = wxID_EXIT,
 923     ID_ABOUT = wxID_ABOUT,
 924     ID_NEW = 100,
 925     ID_SHOWRAW = 101
 926 };
 927
 928 IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )
 929
 930 BEGIN_EVENT_TABLE(MyFrame,wxFrame)
 931   EVT_MENU    (ID_ABOUT, MyFrame::OnAbout)
 932   EVT_MENU    (ID_QUIT,  MyFrame::OnQuit)
 933   EVT_MENU    (ID_NEW,  MyFrame::OnNewFrame)
 934 #ifdef wxHAVE_RAW_BITMAP
 935   EVT_MENU    (ID_SHOWRAW,  MyFrame::OnTestRawBitmap)
 936 #endif
 937
 938 #if wxUSE_CLIPBOARD
 939     EVT_MENU(wxID_COPY, MyFrame::OnCopy)
 940     EVT_MENU(wxID_PASTE, MyFrame::OnPaste)
 941 #endif // wxUSE_CLIPBOARD
 942 END_EVENT_TABLE()
 943
 944 MyFrame::MyFrame()
 945        : wxFrame( (wxFrame *)NULL, wxID_ANY, _T("wxImage sample"),
 946                   wxPoint(20,20), wxSize(470,360) )
 947 {
 948   wxMenuBar *menu_bar = new wxMenuBar();
 949
 950   wxMenu *menuImage = new wxMenu;
 951   menuImage->Append( ID_NEW, _T("&Show any image...\tCtrl-O"));
 952
 953 #ifdef wxHAVE_RAW_BITMAP
 954   menuImage->Append( ID_SHOWRAW, _T("Test &raw bitmap...\tCtrl-R"));
 955 #endif
 956   menuImage->AppendSeparator();
 957   menuImage->Append( ID_ABOUT, _T("&About..."));
 958   menuImage->AppendSeparator();
 959   menuImage->Append( ID_QUIT, _T("E&xit\tCtrl-Q"));
 960   menu_bar->Append(menuImage, _T("&Image"));
 961
 962 #if wxUSE_CLIPBOARD
 963   wxMenu *menuClipboard = new wxMenu;
 964   menuClipboard->Append(wxID_COPY, _T("&Copy test image\tCtrl-C"));
 965   menuClipboard->Append(wxID_PASTE, _T("&Paste image\tCtrl-V"));
 966   menu_bar->Append(menuClipboard, _T("&Clipboard"));
 967 #endif // wxUSE_CLIPBOARD
 968
 969   SetMenuBar( menu_bar );
 970
 971 #if wxUSE_STATUSBAR
 972   CreateStatusBar(2);
 973   int widths[] = { -1, 100 };
 974   SetStatusWidths( 2, widths );
 975 #endif // wxUSE_STATUSBAR
 976
 977   m_canvas = new MyCanvas( this, wxID_ANY, wxPoint(0,0), wxSize(10,10) );
 978
 979   // 500 width * 2750 height
 980   m_canvas->SetScrollbars( 10, 10, 50, 275 );
 981 }
 982
 983 void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
 984 {
 985   Close( true );
 986 }
 987
 988 void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) )
 989 {
 990   (void)wxMessageBox( _T("wxImage demo\n")
 991                       _T("Robert Roebling (c) 1998,2000"),
 992                       _T("About wxImage Demo"), wxICON_INFORMATION | wxOK );
 993 }
 994
 995 void MyFrame::OnNewFrame( wxCommandEvent &WXUNUSED(event) )
 996 {
 997 #if wxUSE_FILEDLG
 998     wxString filename = wxFileSelector(_T("Select image file"));
 999     if ( !filename )
1000         return;
1001
1002     wxImage image;
1003     if ( !image.LoadFile(filename) )
1004     {
1005         wxLogError(_T("Couldn't load image from '%s'."), filename.c_str());
1006
1007         return;
1008     }
1009
1010     (new MyImageFrame(this, wxBitmap(image)))->Show();
1011 #endif // wxUSE_FILEDLG
1012 }
1013
1014 #ifdef wxHAVE_RAW_BITMAP
1015
1016 void MyFrame::OnTestRawBitmap( wxCommandEvent &WXUNUSED(event) )
1017 {
1018     (new MyRawBitmapFrame(this))->Show();
1019 }
1020
1021 #endif // wxHAVE_RAW_BITMAP
1022
1023 #if wxUSE_CLIPBOARD
1024
1025 void MyFrame::OnCopy(wxCommandEvent& WXUNUSED(event))
1026 {
1027     wxBitmapDataObject *dobjBmp = new wxBitmapDataObject;
1028     dobjBmp->SetBitmap(*m_canvas->my_horse_png);
1029
1030     wxTheClipboard->Open();
1031
1032     if ( !wxTheClipboard->SetData(dobjBmp) )
1033     {
1034         wxLogError(_T("Failed to copy bitmap to clipboard"));
1035     }
1036
1037     wxTheClipboard->Close();
1038 }
1039
1040 void MyFrame::OnPaste(wxCommandEvent& WXUNUSED(event))
1041 {
1042     wxBitmapDataObject dobjBmp;
1043
1044     wxTheClipboard->Open();
1045     if ( !wxTheClipboard->GetData(dobjBmp) )
1046     {
1047         wxLogMessage(_T("No bitmap data in the clipboard"));
1048     }
1049     else
1050     {
1051         (new MyImageFrame(this, dobjBmp.GetBitmap()))->Show();
1052     }
1053     wxTheClipboard->Close();
1054 }
1055
1056 #endif // wxUSE_CLIPBOARD
1057
1058 //-----------------------------------------------------------------------------
1059 // MyApp
1060 //-----------------------------------------------------------------------------
1061
1062 bool MyApp::OnInit()
1063 {
1064 #if wxUSE_LIBPNG
1065   wxImage::AddHandler( new wxPNGHandler );
1066 #endif
1067
1068 #if wxUSE_LIBJPEG
1069   wxImage::AddHandler( new wxJPEGHandler );
1070 #endif
1071
1072 #if wxUSE_LIBTIFF
1073   wxImage::AddHandler( new wxTIFFHandler );
1074 #endif
1075
1076 #if wxUSE_GIF
1077   wxImage::AddHandler( new wxGIFHandler );
1078 #endif
1079
1080 #if wxUSE_PCX
1081   wxImage::AddHandler( new wxPCXHandler );
1082 #endif
1083
1084 #if wxUSE_PNM
1085   wxImage::AddHandler( new wxPNMHandler );
1086 #endif
1087
1088 #if wxUSE_XPM
1089   wxImage::AddHandler( new wxXPMHandler );
1090 #endif
1091
1092 #if wxUSE_ICO_CUR
1093   wxImage::AddHandler( new wxICOHandler );
1094   wxImage::AddHandler( new wxCURHandler );
1095   wxImage::AddHandler( new wxANIHandler );
1096 #endif
1097
1098   wxFrame *frame = new MyFrame();
1099   frame->Show( true );
1100
1101   return true;
1102 }