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