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     int xH, yH ;
  85     int m_ani_images ;
  86
  87 protected:
  88     wxBitmap m_bmpSmileXpm;
  89     wxIcon   m_iconSmileXpm;
  90
  91 private:
  92     DECLARE_DYNAMIC_CLASS(MyCanvas)
  93     DECLARE_EVENT_TABLE()
  94 };
  95
  96
  97 // MyFrame
  98
  99
 100 class MyFrame: public wxFrame
 101 {
 102 public:
 103     MyFrame();
 104
 105     void OnAbout( wxCommandEvent &event );
 106     void OnNewFrame( wxCommandEvent &event );
 107 #ifdef wxHAVE_RAW_BITMAP
 108     void OnTestRawBitmap( wxCommandEvent &event );
 109 #endif // wxHAVE_RAW_BITMAP
 110     void OnQuit( wxCommandEvent &event );
 111
 112 #if wxUSE_CLIPBOARD
 113     void OnCopy(wxCommandEvent& event);
 114     void OnPaste(wxCommandEvent& event);
 115 #endif // wxUSE_CLIPBOARD
 116
 117     MyCanvas         *m_canvas;
 118
 119 private:
 120     DECLARE_DYNAMIC_CLASS(MyFrame)
 121     DECLARE_EVENT_TABLE()
 122 };
 123
 124 class MyImageFrame : public wxFrame
 125 {
 126 public:
 127     MyImageFrame(wxFrame *parent, const wxBitmap& bitmap)
 128         : wxFrame(parent, wxID_ANY, _T("Double click to save"),
 129                   wxDefaultPosition, wxDefaultSize,
 130                   wxCAPTION | wxSYSTEM_MENU | wxCLOSE_BOX),
 131                   m_bitmap(bitmap)
 132     {
 133         SetClientSize(bitmap.GetWidth(), bitmap.GetHeight());
 134     }
 135
 136     void OnEraseBackground(wxEraseEvent& WXUNUSED(event))
 137     {
 138         // do nothing here to be able to see how transparent images are shown
 139     }
 140
 141     void OnPaint(wxPaintEvent& WXUNUSED(event))
 142     {
 143         wxPaintDC dc( this );
 144         dc.DrawBitmap( m_bitmap, 0, 0, true /* use mask */ );
 145     }
 146
 147     void OnSave(wxMouseEvent& WXUNUSED(event))
 148     {
 149         wxImage image = m_bitmap.ConvertToImage();
 150
 151         wxString savefilename = wxFileSelector( wxT("Save Image"),
 152                                                 wxT(""),
 153                                                 wxT(""),
 154                                                 (const wxChar *)NULL,
 155                                             wxT("BMP files (*.bmp)|*.bmp|")
 156                                             wxT("PNG files (*.png)|*.png|")
 157                                             wxT("JPEG files (*.jpg)|*.jpg|")
 158                                             wxT("GIF files (*.gif)|*.gif|")
 159                                             wxT("TIFF files (*.tif)|*.tif|")
 160                                             wxT("PCX files (*.pcx)|*.pcx|")
 161                                             wxT("ICO files (*.ico)|*.ico|")
 162                                             wxT("CUR files (*.cur)|*.cur"),
 163                                                 wxSAVE,
 164                                                 this);
 165
 166         if ( savefilename.empty() )
 167             return;
 168
 169         wxString extension;
 170         wxFileName::SplitPath(savefilename, NULL, NULL, &extension);
 171
 172         bool saved = false;
 173         if ( extension == _T("bpp") )
 174         {
 175             static const int bppvalues[] =
 176             {
 177                 wxBMP_1BPP,
 178                 wxBMP_1BPP_BW,
 179                 wxBMP_4BPP,
 180                 wxBMP_8BPP,
 181                 wxBMP_8BPP_GREY,
 182                 wxBMP_8BPP_RED,
 183                 wxBMP_8BPP_PALETTE,
 184                 wxBMP_24BPP
 185             };
 186
 187             static const wxString bppchoices[] =
 188             {
 189                 _T("1 bpp color"),
 190                 _T("1 bpp B&W"),
 191                 _T("4 bpp color"),
 192                 _T("8 bpp color"),
 193                 _T("8 bpp greyscale"),
 194                 _T("8 bpp red"),
 195                 _T("8 bpp own palette"),
 196                 _T("24 bpp")
 197             };
 198
 199             int bppselection = wxGetSingleChoiceIndex(_T("Set BMP BPP"),
 200                                                       _T("Image sample: save file"),
 201                                                       WXSIZEOF(bppchoices),
 202                                                       bppchoices,
 203                                                       this);
 204             if ( bppselection != -1 )
 205             {
 206                 int format = bppvalues[bppselection];
 207                 image.SetOption(wxIMAGE_OPTION_BMP_FORMAT, format);
 208
 209                 if ( format == wxBMP_8BPP_PALETTE )
 210                 {
 211                     unsigned char *cmap = new unsigned char [256];
 212                     for ( int i = 0; i < 256; i++ )
 213                         cmap[i] = (unsigned char)i;
 214                     image.SetPalette(wxPalette(256, cmap, cmap, cmap));
 215
 216                     delete cmap;
 217                 }
 218             }
 219         }
 220         else if ( extension == _T("png") )
 221         {
 222             static const int pngvalues[] =
 223             {
 224                 wxPNG_TYPE_COLOUR,
 225                 wxPNG_TYPE_COLOUR,
 226                 wxPNG_TYPE_GREY,
 227                 wxPNG_TYPE_GREY,
 228                 wxPNG_TYPE_GREY_RED,
 229                 wxPNG_TYPE_GREY_RED,
 230             };
 231
 232             static const wxString pngchoices[] =
 233             {
 234                 _T("Colour 8bpp"),
 235                 _T("Colour 16bpp"),
 236                 _T("Grey 8bpp"),
 237                 _T("Grey 16bpp"),
 238                 _T("Grey red 8bpp"),
 239                 _T("Grey red 16bpp"),
 240             };
 241
 242             int sel = wxGetSingleChoiceIndex(_T("Set PNG format"),
 243                                              _T("Image sample: save file"),
 244                                              WXSIZEOF(pngchoices),
 245                                              pngchoices,
 246                                              this);
 247             if ( sel != -1 )
 248             {
 249                 image.SetOption(wxIMAGE_OPTION_PNG_FORMAT, pngvalues[sel]);
 250                 image.SetOption(wxIMAGE_OPTION_PNG_BITDEPTH, sel % 2 ? 16 : 8);
 251             }
 252         }
 253         else if ( extension == _T("cur") )
 254         {
 255             image.Rescale(32,32);
 256             image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_X, 0);
 257             image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y, 0);
 258             // This shows how you can save an image with explicitly
 259             // specified image format:
 260             saved = image.SaveFile(savefilename, wxBITMAP_TYPE_CUR);
 261         }
 262
 263         if ( !saved )
 264         {
 265             // This one guesses image format from filename extension
 266             // (it may fail if the extension is not recognized):
 267             image.SaveFile(savefilename);
 268         }
 269     }
 270
 271 private:
 272     wxBitmap m_bitmap;
 273
 274     DECLARE_EVENT_TABLE()
 275 };
 276
 277 #ifdef wxHAVE_RAW_BITMAP
 278
 279 #include "wx/rawbmp.h"
 280
 281 class MyRawBitmapFrame : public wxFrame
 282 {
 283 public:
 284     enum
 285     {
 286         BORDER = 15,
 287         SIZE = 150,
 288         REAL_SIZE = SIZE - 2*BORDER
 289     };
 290
 291     MyRawBitmapFrame(wxFrame *parent)
 292         : wxFrame(parent, wxID_ANY, _T("Raw bitmaps (how exciting)")),
 293           m_bitmap(SIZE, SIZE, 32)
 294     {
 295         SetClientSize(SIZE, SIZE);
 296
 297         // another possibility: wxNativePixelData (don't forget to remove code
 298         // setting alpha in the loop below then)
 299         typedef wxAlphaPixelData Data;
 300
 301         Data data(m_bitmap, wxPoint(BORDER, BORDER), wxSize(REAL_SIZE, REAL_SIZE));
 302         if ( !data )
 303         {
 304             wxLogError(_T("Failed to gain raw access to bitmap data"));
 305             return;
 306         }
 307
 308 //        data.UseAlpha();
 309
 310         Data::Iterator p(data);
 311
 312         for ( int y = 0; y < REAL_SIZE; ++y )
 313         {
 314             Data::Iterator rowStart = p;
 315
 316             int r = y < REAL_SIZE/3 ? 255 : 0,
 317                 g = (REAL_SIZE/3 <= y) && (y < 2*(REAL_SIZE/3)) ? 255 : 0,
 318                 b = 2*(REAL_SIZE/3) <= y ? 255 : 0;
 319
 320             for ( int x = 0; x < REAL_SIZE; ++x )
 321             {
 322                 p.Red() = r;
 323                 p.Green() = g;
 324                 p.Blue() = b;
 325                 p.Alpha() = (Data::Iterator::ChannelType)((x*255.)/REAL_SIZE);
 326
 327                 ++p; // same as p.OffsetX(1)
 328             }
 329
 330             p = rowStart;
 331             p.OffsetY(data, 1);
 332         }
 333     }
 334
 335     void OnPaint(wxPaintEvent& WXUNUSED(event))
 336     {
 337         wxPaintDC dc( this );
 338         dc.DrawText(_T("This is alpha and raw bitmap test"), 0, BORDER);
 339         dc.DrawText(_T("This is alpha and raw bitmap test"), 0, SIZE/2 - BORDER);
 340         dc.DrawText(_T("This is alpha and raw bitmap test"), 0, SIZE - 2*BORDER);
 341         dc.DrawBitmap( m_bitmap, 0, 0, true /* use mask */ );
 342     }
 343
 344 private:
 345     wxBitmap m_bitmap;
 346
 347     DECLARE_EVENT_TABLE()
 348 };
 349
 350 #endif // wxHAVE_RAW_BITMAP
 351
 352 // MyApp
 353
 354 class MyApp: public wxApp
 355 {
 356 public:
 357     virtual bool OnInit();
 358 };
 359
 360 // main program
 361
 362 IMPLEMENT_APP(MyApp)
 363
 364 // MyCanvas
 365
 366 IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxScrolledWindow)
 367
 368 BEGIN_EVENT_TABLE(MyImageFrame, wxFrame)
 369     EVT_ERASE_BACKGROUND(MyImageFrame::OnEraseBackground)
 370     EVT_PAINT(MyImageFrame::OnPaint)
 371     EVT_LEFT_DCLICK(MyImageFrame::OnSave)
 372 END_EVENT_TABLE()
 373
 374 #ifdef wxHAVE_RAW_BITMAP
 375
 376 BEGIN_EVENT_TABLE(MyRawBitmapFrame, wxFrame)
 377     EVT_PAINT(MyRawBitmapFrame::OnPaint)
 378 END_EVENT_TABLE()
 379
 380 #endif // wxHAVE_RAW_BITMAP
 381
 382 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
 383   EVT_PAINT(MyCanvas::OnPaint)
 384 END_EVENT_TABLE()
 385
 386 MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
 387                     const wxPoint &pos, const wxSize &size )
 388         : wxScrolledWindow( parent, id, pos, size, wxSUNKEN_BORDER )
 389           , m_bmpSmileXpm((const char **) smile_xpm)
 390           , m_iconSmileXpm((const char **) smile_xpm)
 391 {
 392     my_horse_png = (wxBitmap*) NULL;
 393     my_horse_jpeg = (wxBitmap*) NULL;
 394     my_horse_gif = (wxBitmap*) NULL;
 395     my_horse_bmp = (wxBitmap*) NULL;
 396     my_horse_bmp2 = (wxBitmap*) NULL;
 397     my_horse_pcx = (wxBitmap*) NULL;
 398     my_horse_pnm = (wxBitmap*) NULL;
 399     my_horse_tiff = (wxBitmap*) NULL;
 400     my_horse_xpm = (wxBitmap*) NULL;
 401     my_horse_ico32 = (wxBitmap*) NULL;
 402     my_horse_ico16 = (wxBitmap*) NULL;
 403     my_horse_ico = (wxBitmap*) NULL;
 404     my_horse_cur = (wxBitmap*) NULL;
 405     my_horse_ani = (wxBitmap*) NULL;
 406
 407     my_smile_xbm = (wxBitmap*) NULL;
 408     my_square = (wxBitmap*) NULL;
 409     my_anti = (wxBitmap*) NULL;
 410
 411     m_ani_images = 0 ;
 412
 413     SetBackgroundColour(* wxWHITE);
 414
 415     wxBitmap bitmap( 100, 100 );
 416
 417     wxMemoryDC dc;
 418     dc.SelectObject( bitmap );
 419     dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) );
 420     dc.SetPen( *wxBLACK_PEN );
 421     dc.DrawRectangle( 0, 0, 100, 100 );
 422     dc.SetBrush( *wxWHITE_BRUSH );
 423     dc.DrawRectangle( 20, 20, 60, 60 );
 424     dc.SelectObject( wxNullBitmap );
 425
 426     // try to find the directory with our images
 427     wxString dir;
 428     if ( wxFile::Exists(wxT("./horse.png")) )
 429         dir = wxT("./");
 430     else if ( wxFile::Exists(wxT("../horse.png")) )
 431         dir = wxT("../");
 432     else
 433         wxLogWarning(wxT("Can't find image files in either '.' or '..'!"));
 434
 435     wxImage image = bitmap.ConvertToImage();
 436
 437 #if wxUSE_LIBPNG
 438     if ( !image.SaveFile( dir + _T("test.png"), wxBITMAP_TYPE_PNG ))
 439         wxLogError(wxT("Can't save file"));
 440
 441     image.Destroy();
 442
 443     if ( image.LoadFile( dir + _T("test.png") ) )
 444         my_square = new wxBitmap( image );
 445
 446     image.Destroy();
 447
 448     if ( !image.LoadFile( dir + _T("horse.png")) )
 449         wxLogError(wxT("Can't load PNG image"));
 450     else
 451         my_horse_png = new wxBitmap( image );
 452 #endif // wxUSE_LIBPNG
 453
 454 #if wxUSE_LIBJPEG
 455     image.Destroy();
 456
 457     if ( !image.LoadFile( dir + _T("horse.jpg")) )
 458         wxLogError(wxT("Can't load JPG image"));
 459     else
 460         my_horse_jpeg = new wxBitmap( image );
 461 #endif // wxUSE_LIBJPEG
 462
 463 #if wxUSE_GIF
 464     image.Destroy();
 465
 466     if ( !image.LoadFile( dir + _T("horse.gif" )) )
 467         wxLogError(wxT("Can't load GIF image"));
 468     else
 469         my_horse_gif = new wxBitmap( image );
 470 #endif
 471
 472 #if wxUSE_PCX
 473     image.Destroy();
 474
 475     if ( !image.LoadFile( dir + _T("horse.pcx"), wxBITMAP_TYPE_PCX ) )
 476         wxLogError(wxT("Can't load PCX image"));
 477     else
 478         my_horse_pcx = new wxBitmap( image );
 479 #endif
 480
 481     image.Destroy();
 482
 483     if ( !image.LoadFile( dir + _T("horse.bmp"), wxBITMAP_TYPE_BMP ) )
 484         wxLogError(wxT("Can't load BMP image"));
 485     else
 486         my_horse_bmp = new wxBitmap( image );
 487
 488 #if wxUSE_XPM
 489     image.Destroy();
 490
 491     if ( !image.LoadFile( dir + _T("horse.xpm"), wxBITMAP_TYPE_XPM ) )
 492         wxLogError(wxT("Can't load XPM image"));
 493     else
 494         my_horse_xpm = new wxBitmap( image );
 495
 496     if ( !image.SaveFile( dir + _T("test.xpm"), wxBITMAP_TYPE_XPM ))
 497         wxLogError(wxT("Can't save file"));
 498 #endif
 499
 500 #if wxUSE_PNM
 501     image.Destroy();
 502
 503     if ( !image.LoadFile( dir + _T("horse.pnm"), wxBITMAP_TYPE_PNM ) )
 504         wxLogError(wxT("Can't load PNM image"));
 505     else
 506         my_horse_pnm = new wxBitmap( image );
 507 #endif
 508
 509 #if wxUSE_LIBTIFF
 510     image.Destroy();
 511
 512     if ( !image.LoadFile( dir + _T("horse.tif"), wxBITMAP_TYPE_TIF ) )
 513         wxLogError(wxT("Can't load TIFF image"));
 514     else
 515         my_horse_tiff = new wxBitmap( image );
 516 #endif
 517
 518     CreateAntiAliasedBitmap();
 519
 520     my_smile_xbm = new wxBitmap( (const char*)smile_bits, smile_width,
 521                                  smile_height, 1 );
 522
 523     // demonstrates XPM automatically using the mask when saving
 524     if ( m_bmpSmileXpm.Ok() )
 525         m_bmpSmileXpm.SaveFile(_T("saved.xpm"), wxBITMAP_TYPE_XPM);
 526
 527 #if wxUSE_ICO_CUR
 528     image.Destroy();
 529
 530     if ( !image.LoadFile( dir + _T("horse.ico"), wxBITMAP_TYPE_ICO, 0 ) )
 531         wxLogError(wxT("Can't load first ICO image"));
 532     else
 533         my_horse_ico32 = new wxBitmap( image );
 534
 535     image.Destroy();
 536
 537     if ( !image.LoadFile( dir + _T("horse.ico"), wxBITMAP_TYPE_ICO, 1 ) )
 538         wxLogError(wxT("Can't load second ICO image"));
 539     else
 540         my_horse_ico16 = new wxBitmap( image );
 541
 542     image.Destroy();
 543
 544     if ( !image.LoadFile( dir + _T("horse.ico") ) )
 545         wxLogError(wxT("Can't load best ICO image"));
 546     else
 547         my_horse_ico = new wxBitmap( image );
 548
 549     image.Destroy();
 550
 551     if ( !image.LoadFile( dir + _T("horse.cur"), wxBITMAP_TYPE_CUR ) )
 552         wxLogError(wxT("Can't load best ICO image"));
 553     else
 554     {
 555         my_horse_cur = new wxBitmap( image );
 556         xH = 30 + image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X) ;
 557         yH = 2420 + image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y) ;
 558     }
 559
 560     m_ani_images = wxImage::GetImageCount ( dir + _T("horse3.ani"), wxBITMAP_TYPE_ANI );
 561     if (m_ani_images==0)
 562         wxLogError(wxT("No ANI-format images found"));
 563     else
 564         my_horse_ani = new wxBitmap [m_ani_images];
 565     int i ;
 566     for (i=0; i < m_ani_images; i++)
 567     {
 568         image.Destroy();
 569         if (!image.LoadFile( dir + _T("horse3.ani"), wxBITMAP_TYPE_ANI, i ))
 570         {
 571             wxString tmp = wxT("Can't load image number ");
 572             tmp << i ;
 573             wxLogError(tmp);
 574         }
 575         else
 576             my_horse_ani [i] = wxBitmap( image );
 577     }
 578 #endif // wxUSE_ICO_CUR
 579
 580     image.Destroy();
 581
 582     // test image loading from stream
 583     wxFile file(dir + _T("horse.bmp"));
 584     if ( file.IsOpened() )
 585     {
 586         wxFileOffset len = file.Length();
 587         size_t dataSize = (size_t)len;
 588         void *data = malloc(dataSize);
 589         if ( file.Read(data, dataSize) != len )
 590             wxLogError(_T("Reading bitmap file failed"));
 591         else
 592         {
 593             wxMemoryInputStream mis(data, dataSize);
 594             if ( !image.LoadFile(mis) )
 595                 wxLogError(wxT("Can't load BMP image from stream"));
 596             else
 597                 my_horse_bmp2 = new wxBitmap( image );
 598         }
 599
 600         free(data);
 601     }
 602 }
 603
 604 MyCanvas::~MyCanvas()
 605 {
 606     delete my_horse_pnm;
 607     delete my_horse_png;
 608     delete my_horse_jpeg;
 609     delete my_horse_gif;
 610     delete my_horse_bmp;
 611     delete my_horse_bmp2;
 612     delete my_horse_pcx;
 613     delete my_horse_tiff;
 614     delete my_horse_xpm;
 615     delete my_horse_ico32;
 616     delete my_horse_ico16;
 617     delete my_horse_ico;
 618     delete my_horse_cur;
 619     delete [] my_horse_ani;
 620     delete my_smile_xbm;
 621     delete my_square;
 622     delete my_anti;
 623 }
 624
 625 void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
 626 {
 627     wxPaintDC dc( this );
 628     PrepareDC( dc );
 629
 630     dc.DrawText( _T("Loaded image"), 30, 10 );
 631     if (my_square && my_square->Ok()) dc.DrawBitmap( *my_square, 30, 30 );
 632
 633     dc.DrawText( _T("Drawn directly"), 150, 10 );
 634     dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) );
 635     dc.SetPen( *wxBLACK_PEN );
 636     dc.DrawRectangle( 150, 30, 100, 100 );
 637     dc.SetBrush( *wxWHITE_BRUSH );
 638     dc.DrawRectangle( 170, 50, 60, 60 );
 639
 640     if (my_anti && my_anti->Ok())
 641         dc.DrawBitmap( *my_anti, 280, 30 );
 642
 643     dc.DrawText( _T("PNG handler"), 30, 135 );
 644     if (my_horse_png && my_horse_png->Ok())
 645     {
 646         dc.DrawBitmap( *my_horse_png, 30, 150 );
 647         wxRect rect(0,0,100,100);
 648         wxBitmap sub( my_horse_png->GetSubBitmap(rect) );
 649         dc.DrawText( _T("GetSubBitmap()"), 280, 190 );
 650         dc.DrawBitmap( sub, 280, 210 );
 651     }
 652
 653     dc.DrawText( _T("JPEG handler"), 30, 365 );
 654     if (my_horse_jpeg && my_horse_jpeg->Ok())
 655         dc.DrawBitmap( *my_horse_jpeg, 30, 380 );
 656
 657     dc.DrawText( _T("GIF handler"), 30, 595 );
 658     if (my_horse_gif && my_horse_gif->Ok())
 659         dc.DrawBitmap( *my_horse_gif, 30, 610 );
 660
 661     dc.DrawText( _T("PCX handler"), 30, 825 );
 662     if (my_horse_pcx && my_horse_pcx->Ok())
 663         dc.DrawBitmap( *my_horse_pcx, 30, 840 );
 664
 665     dc.DrawText( _T("BMP handler"), 30, 1055 );
 666     if (my_horse_bmp && my_horse_bmp->Ok())
 667         dc.DrawBitmap( *my_horse_bmp, 30, 1070 );
 668
 669     dc.DrawText( _T("BMP read from memory"), 280, 1055 );
 670     if (my_horse_bmp2 && my_horse_bmp2->Ok())
 671         dc.DrawBitmap( *my_horse_bmp2, 280, 1070 );
 672
 673     dc.DrawText( _T("PNM handler"), 30, 1285 );
 674     if (my_horse_pnm && my_horse_pnm->Ok())
 675         dc.DrawBitmap( *my_horse_pnm, 30, 1300 );
 676
 677     dc.DrawText( _T("TIFF handler"), 30, 1515 );
 678     if (my_horse_tiff && my_horse_tiff->Ok())
 679         dc.DrawBitmap( *my_horse_tiff, 30, 1530 );
 680
 681     dc.DrawText( _T("XPM handler"), 30, 1745 );
 682     if (my_horse_xpm && my_horse_xpm->Ok())
 683         dc.DrawBitmap( *my_horse_xpm, 30, 1760 );
 684
 685
 686     if (my_smile_xbm && my_smile_xbm->Ok())
 687     {
 688         dc.DrawText( _T("XBM bitmap"), 30, 1975 );
 689         dc.DrawText( _T("(green on red)"), 30, 1990 );
 690         dc.SetTextForeground( _T("GREEN") );
 691         dc.SetTextBackground( _T("RED") );
 692         dc.DrawBitmap( *my_smile_xbm, 30, 2010 );
 693
 694         dc.SetTextForeground( wxT("BLACK") );
 695         dc.DrawText( _T("After wxImage conversion"), 150, 1975 );
 696         dc.DrawText( _T("(red on white)"), 150, 1990 );
 697         dc.SetTextForeground( wxT("RED") );
 698         wxImage i = my_smile_xbm->ConvertToImage();
 699         i.SetMaskColour( 255, 255, 255 );
 700         i.Replace( 0, 0, 0,
 701                wxRED_PEN->GetColour().Red(),
 702                wxRED_PEN->GetColour().Green(),
 703                wxRED_PEN->GetColour().Blue() );
 704         dc.DrawBitmap( wxBitmap(i), 150, 2010, true );
 705         dc.SetTextForeground( wxT("BLACK") );
 706     }
 707
 708
 709     wxBitmap mono( 60,50,1 );
 710     wxMemoryDC memdc;
 711     memdc.SelectObject( mono );
 712     memdc.SetPen( *wxBLACK_PEN );
 713     memdc.SetBrush( *wxWHITE_BRUSH );
 714     memdc.DrawRectangle( 0,0,60,50 );
 715     memdc.SetTextForeground( *wxBLACK );
 716 #ifndef __WXGTK20__
 717     // I cannot convince GTK2 to draw into mono bitmaps
 718     memdc.DrawText( _T("Hi!"), 5, 5 );
 719 #endif
 720     memdc.SetBrush( *wxBLACK_BRUSH );
 721     memdc.DrawRectangle( 33,5,20,20 );
 722     memdc.SetPen( *wxRED_PEN );
 723     memdc.DrawLine( 5, 42, 50, 42 );
 724     memdc.SelectObject( wxNullBitmap );
 725
 726     if (mono.Ok())
 727     {
 728         dc.DrawText( _T("Mono bitmap"), 30, 2095 );
 729         dc.DrawText( _T("(red on green)"), 30, 2110 );
 730         dc.SetTextForeground( wxT("RED") );
 731         dc.SetTextBackground( wxT("GREEN") );
 732         dc.DrawBitmap( mono, 30, 2130 );
 733
 734         dc.SetTextForeground( wxT("BLACK") );
 735         dc.DrawText( _T("After wxImage conversion"), 150, 2095 );
 736         dc.DrawText( _T("(red on white)"), 150, 2110 );
 737         dc.SetTextForeground( wxT("RED") );
 738         wxImage i = mono.ConvertToImage();
 739         i.SetMaskColour( 255,255,255 );
 740         i.Replace( 0,0,0,
 741                wxRED_PEN->GetColour().Red(),
 742                wxRED_PEN->GetColour().Green(),
 743                wxRED_PEN->GetColour().Blue() );
 744         dc.DrawBitmap( wxBitmap(i), 150, 2130, true );
 745         dc.SetTextForeground( wxT("BLACK") );
 746     }
 747
 748     // For testing transparency
 749     dc.SetBrush( *wxRED_BRUSH );
 750     dc.DrawRectangle( 20, 2220, 560, 68 );
 751
 752     dc.DrawText(_T("XPM bitmap"), 30, 2230 );
 753     if ( m_bmpSmileXpm.Ok() )
 754         dc.DrawBitmap(m_bmpSmileXpm, 30, 2250, true);
 755
 756     dc.DrawText(_T("XPM icon"), 110, 2230 );
 757     if ( m_iconSmileXpm.Ok() )
 758         dc.DrawIcon(m_iconSmileXpm, 110, 2250);
 759
 760     // testing icon -> bitmap conversion
 761     wxBitmap to_blit( m_iconSmileXpm );
 762     if (to_blit.Ok())
 763     {
 764         dc.DrawText( _T("SubBitmap"), 170, 2230 );
 765         wxBitmap sub = to_blit.GetSubBitmap( wxRect(0,0,15,15) );
 766         if (sub.Ok())
 767             dc.DrawBitmap( sub, 170, 2250, true );
 768
 769         dc.DrawText( _T("Enlarged"), 250, 2230 );
 770         dc.SetUserScale( 1.5, 1.5 );
 771         dc.DrawBitmap( to_blit, (int)(250/1.5), (int)(2250/1.5), true );
 772         dc.SetUserScale( 2, 2 );
 773         dc.DrawBitmap( to_blit, (int)(300/2), (int)(2250/2), true );
 774         dc.SetUserScale( 1.0, 1.0 );
 775
 776         dc.DrawText( _T("Blit"), 400, 2230);
 777         wxMemoryDC blit_dc;
 778         blit_dc.SelectObject( to_blit );
 779         dc.Blit( 400, 2250, to_blit.GetWidth(), to_blit.GetHeight(), &blit_dc, 0, 0, wxCOPY, true );
 780         dc.SetUserScale( 1.5, 1.5 );
 781         dc.Blit( (int)(450/1.5), (int)(2250/1.5), to_blit.GetWidth(), to_blit.GetHeight(), &blit_dc, 0, 0, wxCOPY, true );
 782         dc.SetUserScale( 2, 2 );
 783         dc.Blit( (int)(500/2), (int)(2250/2), to_blit.GetWidth(), to_blit.GetHeight(), &blit_dc, 0, 0, wxCOPY, true );
 784         dc.SetUserScale( 1.0, 1.0 );
 785     }
 786
 787     dc.DrawText( _T("ICO handler (1st image)"), 30, 2290 );
 788     if (my_horse_ico32 && my_horse_ico32->Ok())
 789         dc.DrawBitmap( *my_horse_ico32, 30, 2330, true );
 790
 791     dc.DrawText( _T("ICO handler (2nd image)"), 230, 2290 );
 792     if (my_horse_ico16 && my_horse_ico16->Ok())
 793         dc.DrawBitmap( *my_horse_ico16, 230, 2330, true );
 794
 795     dc.DrawText( _T("ICO handler (best image)"), 430, 2290 );
 796     if (my_horse_ico && my_horse_ico->Ok())
 797         dc.DrawBitmap( *my_horse_ico, 430, 2330, true );
 798
 799     dc.DrawText( _T("CUR handler"), 30, 2390 );
 800     if (my_horse_cur && my_horse_cur->Ok())
 801     {
 802         dc.DrawBitmap( *my_horse_cur, 30, 2420, true );
 803         dc.SetPen (*wxRED_PEN);
 804         dc.DrawLine (xH-10,yH,xH+10,yH);
 805         dc.DrawLine (xH,yH-10,xH,yH+10);
 806     }
 807     dc.DrawText( _T("ANI handler"), 230, 2390 );
 808     int i ;
 809     for (i=0; i < m_ani_images; i ++)
 810         if (my_horse_ani[i].Ok())
 811         {
 812             dc.DrawBitmap( my_horse_ani[i], 230 + i * 2 * my_horse_ani[i].GetWidth() , 2420, true );
 813         }
 814 }
 815
 816 void MyCanvas::CreateAntiAliasedBitmap()
 817 {
 818   wxBitmap bitmap( 300, 300 );
 819
 820   wxMemoryDC dc;
 821
 822   dc.SelectObject( bitmap );
 823
 824   dc.Clear();
 825
 826   dc.SetFont( wxFont( 24, wxDECORATIVE, wxNORMAL, wxNORMAL) );
 827   dc.SetTextForeground( wxT("RED") );
 828   dc.DrawText( _T("This is anti-aliased Text."), 20, 20 );
 829   dc.DrawText( _T("And a Rectangle."), 20, 60 );
 830
 831   dc.SetBrush( *wxRED_BRUSH );
 832   dc.SetPen( *wxTRANSPARENT_PEN );
 833   dc.DrawRoundedRectangle( 20, 100, 200, 180, 20 );
 834
 835   wxImage original= bitmap.ConvertToImage();
 836   wxImage anti( 150, 150 );
 837
 838   /* This is quite slow, but safe. Use wxImage::GetData() for speed instead. */
 839
 840   for (int y = 1; y < 149; y++)
 841     for (int x = 1; x < 149; x++)
 842     {
 843        int red = original.GetRed( x*2, y*2 ) +
 844                  original.GetRed( x*2-1, y*2 ) +
 845                  original.GetRed( x*2, y*2+1 ) +
 846                  original.GetRed( x*2+1, y*2+1 );
 847        red = red/4;
 848
 849        int green = original.GetGreen( x*2, y*2 ) +
 850                    original.GetGreen( x*2-1, y*2 ) +
 851                    original.GetGreen( x*2, y*2+1 ) +
 852                    original.GetGreen( x*2+1, y*2+1 );
 853        green = green/4;
 854
 855        int blue = original.GetBlue( x*2, y*2 ) +
 856                   original.GetBlue( x*2-1, y*2 ) +
 857                   original.GetBlue( x*2, y*2+1 ) +
 858                   original.GetBlue( x*2+1, y*2+1 );
 859        blue = blue/4;
 860        anti.SetRGB( x, y, (unsigned char)red, (unsigned char)green, (unsigned char)blue );
 861     }
 862   my_anti = new wxBitmap(anti);
 863 }
 864
 865 // MyFrame
 866
 867 enum
 868 {
 869     ID_QUIT  = 108,
 870     ID_ABOUT,
 871     ID_NEW,
 872     ID_SHOWRAW
 873 };
 874
 875 IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )
 876
 877 BEGIN_EVENT_TABLE(MyFrame,wxFrame)
 878   EVT_MENU    (ID_ABOUT, MyFrame::OnAbout)
 879   EVT_MENU    (ID_QUIT,  MyFrame::OnQuit)
 880   EVT_MENU    (ID_NEW,  MyFrame::OnNewFrame)
 881 #ifdef wxHAVE_RAW_BITMAP
 882   EVT_MENU    (ID_SHOWRAW,  MyFrame::OnTestRawBitmap)
 883 #endif
 884
 885 #if wxUSE_CLIPBOARD
 886     EVT_MENU(wxID_COPY, MyFrame::OnCopy)
 887     EVT_MENU(wxID_PASTE, MyFrame::OnPaste)
 888 #endif // wxUSE_CLIPBOARD
 889 END_EVENT_TABLE()
 890
 891 MyFrame::MyFrame()
 892        : wxFrame( (wxFrame *)NULL, wxID_ANY, _T("wxImage sample"),
 893                   wxPoint(20,20), wxSize(470,360) )
 894 {
 895   wxMenuBar *menu_bar = new wxMenuBar();
 896
 897   wxMenu *menuImage = new wxMenu;
 898   menuImage->Append( ID_NEW, _T("&Show any image...\tCtrl-O"));
 899
 900 #ifdef wxHAVE_RAW_BITMAP
 901   menuImage->Append( ID_SHOWRAW, _T("Test &raw bitmap...\tCtrl-R"));
 902 #endif
 903   menuImage->AppendSeparator();
 904   menuImage->Append( ID_ABOUT, _T("&About..."));
 905   menuImage->AppendSeparator();
 906   menuImage->Append( ID_QUIT, _T("E&xit\tCtrl-Q"));
 907   menu_bar->Append(menuImage, _T("&Image"));
 908
 909 #if wxUSE_CLIPBOARD
 910   wxMenu *menuClipboard = new wxMenu;
 911   menuClipboard->Append(wxID_COPY, _T("&Copy test image\tCtrl-C"));
 912   menuClipboard->Append(wxID_PASTE, _T("&Paste image\tCtrl-V"));
 913   menu_bar->Append(menuClipboard, _T("&Clipboard"));
 914 #endif // wxUSE_CLIPBOARD
 915
 916   SetMenuBar( menu_bar );
 917
 918 #if wxUSE_STATUSBAR
 919   CreateStatusBar(2);
 920   int widths[] = { -1, 100 };
 921   SetStatusWidths( 2, widths );
 922 #endif // wxUSE_STATUSBAR
 923
 924   m_canvas = new MyCanvas( this, wxID_ANY, wxPoint(0,0), wxSize(10,10) );
 925
 926   // 500 width * 2500 height
 927   m_canvas->SetScrollbars( 10, 10, 50, 250 );
 928 }
 929
 930 void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
 931 {
 932   Close( true );
 933 }
 934
 935 void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) )
 936 {
 937   (void)wxMessageBox( _T("wxImage demo\n")
 938                       _T("Robert Roebling (c) 1998,2000"),
 939                       _T("About wxImage Demo"), wxICON_INFORMATION | wxOK );
 940 }
 941
 942 void MyFrame::OnNewFrame( wxCommandEvent &WXUNUSED(event) )
 943 {
 944     wxString filename = wxFileSelector(_T("Select image file"));
 945     if ( !filename )
 946         return;
 947
 948     wxImage image;
 949     if ( !image.LoadFile(filename) )
 950     {
 951         wxLogError(_T("Couldn't load image from '%s'."), filename.c_str());
 952
 953         return;
 954     }
 955
 956     (new MyImageFrame(this, wxBitmap(image)))->Show();
 957 }
 958
 959 #ifdef wxHAVE_RAW_BITMAP
 960
 961 void MyFrame::OnTestRawBitmap( wxCommandEvent &WXUNUSED(event) )
 962 {
 963     (new MyRawBitmapFrame(this))->Show();
 964 }
 965
 966 #endif // wxHAVE_RAW_BITMAP
 967
 968 #if wxUSE_CLIPBOARD
 969
 970 void MyFrame::OnCopy(wxCommandEvent& WXUNUSED(event))
 971 {
 972     wxBitmapDataObject *dobjBmp = new wxBitmapDataObject;
 973     dobjBmp->SetBitmap(*m_canvas->my_horse_png);
 974
 975     wxTheClipboard->Open();
 976
 977     if ( !wxTheClipboard->SetData(dobjBmp) )
 978     {
 979         wxLogError(_T("Failed to copy bitmap to clipboard"));
 980     }
 981
 982     wxTheClipboard->Close();
 983 }
 984
 985 void MyFrame::OnPaste(wxCommandEvent& WXUNUSED(event))
 986 {
 987     wxBitmapDataObject dobjBmp;
 988
 989     wxTheClipboard->Open();
 990     if ( !wxTheClipboard->GetData(dobjBmp) )
 991     {
 992         wxLogMessage(_T("No bitmap data in the clipboard"));
 993     }
 994     else
 995     {
 996         (new MyImageFrame(this, dobjBmp.GetBitmap()))->Show();
 997     }
 998     wxTheClipboard->Close();
 999 }
1000
1001 #endif // wxUSE_CLIPBOARD
1002
1003 //-----------------------------------------------------------------------------
1004 // MyApp
1005 //-----------------------------------------------------------------------------
1006
1007 bool MyApp::OnInit()
1008 {
1009 #if wxUSE_LIBPNG
1010   wxImage::AddHandler( new wxPNGHandler );
1011 #endif
1012
1013 #if wxUSE_LIBJPEG
1014   wxImage::AddHandler( new wxJPEGHandler );
1015 #endif
1016
1017 #if wxUSE_LIBTIFF
1018   wxImage::AddHandler( new wxTIFFHandler );
1019 #endif
1020
1021 #if wxUSE_GIF
1022   wxImage::AddHandler( new wxGIFHandler );
1023 #endif
1024
1025 #if wxUSE_PCX
1026   wxImage::AddHandler( new wxPCXHandler );
1027 #endif
1028
1029 #if wxUSE_PNM
1030   wxImage::AddHandler( new wxPNMHandler );
1031 #endif
1032
1033 #if wxUSE_XPM
1034   wxImage::AddHandler( new wxXPMHandler );
1035 #endif
1036
1037 #if wxUSE_ICO_CUR
1038   wxImage::AddHandler( new wxICOHandler );
1039   wxImage::AddHandler( new wxCURHandler );
1040   wxImage::AddHandler( new wxANIHandler );
1041 #endif
1042
1043   wxFrame *frame = new MyFrame();
1044   frame->Show( true );
1045
1046   return true;
1047 }
1048