samples/image/image.cpp

   1 /*
   2  * Program: image
   3  *
   4  * Author: Robert Roebling
   5  *
   6  * Copyright: (C) 1998, Robert Roebling
   7  *
   8  */
   9
  10 // For compilers that support precompilation, includes "wx/wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #ifdef __BORLANDC__
  14 #pragma hdrstop
  15 #endif
  16
  17 #ifndef WX_PRECOMP
  18 #include "wx/wx.h"
  19 #endif
  20
  21 #include "wx/image.h"
  22 #include "wx/file.h"
  23 #include "wx/mstream.h"
  24 #include "wx/wfstream.h"
  25 #include "wx/quantize.h"
  26
  27 #if wxUSE_CLIPBOARD
  28     #include "wx/dataobj.h"
  29     #include "wx/clipbrd.h"
  30 #endif // wxUSE_CLIPBOARD
  31
  32 #include "smile.xbm"
  33 #include "smile.xpm"
  34
  35 #if defined(__WXMSW__) || defined(__WXMAC__)
  36     #ifdef wxHAVE_RAW_BITMAP
  37     #include "wx/rawbmp.h"
  38     #endif
  39 #endif
  40
  41 // derived classes
  42
  43 class MyFrame;
  44 class MyApp;
  45
  46 // MyCanvas
  47
  48 class MyCanvas: public wxScrolledWindow
  49 {
  50 public:
  51     MyCanvas() {}
  52     MyCanvas( wxWindow *parent, wxWindowID, const wxPoint &pos, const wxSize &size );
  53     ~MyCanvas();
  54     void OnPaint( wxPaintEvent &event );
  55     void CreateAntiAliasedBitmap();
  56
  57     wxBitmap  *my_horse_png;
  58     wxBitmap  *my_horse_jpeg;
  59     wxBitmap  *my_horse_gif;
  60     wxBitmap  *my_horse_bmp;
  61     wxBitmap  *my_horse_bmp2;
  62     wxBitmap  *my_horse_pcx;
  63     wxBitmap  *my_horse_pnm;
  64     wxBitmap  *my_horse_tiff;
  65     wxBitmap  *my_horse_xpm;
  66     wxBitmap  *my_horse_ico32;
  67     wxBitmap  *my_horse_ico16;
  68     wxBitmap  *my_horse_ico;
  69     wxBitmap  *my_horse_cur;
  70     wxBitmap  *my_horse_ani;
  71
  72     wxBitmap  *my_smile_xbm;
  73     wxBitmap  *my_square;
  74     wxBitmap  *my_anti;
  75
  76     int xH, yH ;
  77     int m_ani_images ;
  78
  79 protected:
  80     wxBitmap m_bmpSmileXpm;
  81     wxIcon   m_iconSmileXpm;
  82
  83 private:
  84     DECLARE_DYNAMIC_CLASS(MyCanvas)
  85     DECLARE_EVENT_TABLE()
  86 };
  87
  88
  89 const int nChoices = 8 ;
  90 static const wxString bppchoices[nChoices] =
  91 {
  92     _T("1 bpp color"),
  93     _T("1 bpp B&W"),
  94     _T("4 bpp color"),
  95     _T("8 bpp color"),
  96     _T("8 bpp greyscale"),
  97     _T("8 bpp red"),
  98     _T("8 bpp own palette"),
  99     _T("24 bpp")
 100 };
 101
 102 static const int bppvalues[nChoices] =
 103 {
 104     wxBMP_1BPP,
 105     wxBMP_1BPP_BW,
 106     wxBMP_4BPP,
 107     wxBMP_8BPP,
 108     wxBMP_8BPP_GREY,
 109     wxBMP_8BPP_RED,
 110     wxBMP_8BPP_PALETTE,
 111     wxBMP_24BPP
 112 };
 113
 114 // MyFrame
 115
 116
 117 class MyFrame: public wxFrame
 118 {
 119 public:
 120     MyFrame();
 121
 122     void OnAbout( wxCommandEvent &event );
 123     void OnNewFrame( wxCommandEvent &event );
 124 #ifdef wxHAVE_RAW_BITMAP
 125     void OnTestRawBitmap( wxCommandEvent &event );
 126 #endif // wxHAVE_RAW_BITMAP
 127     void OnQuit( wxCommandEvent &event );
 128
 129 #if wxUSE_CLIPBOARD
 130     void OnCopy(wxCommandEvent& event);
 131     void OnPaste(wxCommandEvent& event);
 132 #endif // wxUSE_CLIPBOARD
 133
 134     MyCanvas         *m_canvas;
 135
 136 private:
 137     DECLARE_DYNAMIC_CLASS(MyFrame)
 138     DECLARE_EVENT_TABLE()
 139 };
 140
 141 class MyImageFrame : public wxFrame
 142 {
 143 public:
 144     MyImageFrame(wxFrame *parent, const wxBitmap& bitmap)
 145         : wxFrame(parent, -1, _T("Double click to save"),
 146                   wxDefaultPosition, wxDefaultSize,
 147                   wxCAPTION | wxSYSTEM_MENU | wxCLOSE_BOX),
 148                   m_bitmap(bitmap)
 149     {
 150         SetClientSize(bitmap.GetWidth(), bitmap.GetHeight());
 151     }
 152
 153     void OnEraseBackground(wxEraseEvent& WXUNUSED(event))
 154     {
 155         // do nothing here to be able to see how transparent images are shown
 156     }
 157
 158     void OnPaint(wxPaintEvent& WXUNUSED(event))
 159     {
 160         wxPaintDC dc( this );
 161         dc.DrawBitmap( m_bitmap, 0, 0, TRUE /* use mask */ );
 162     }
 163
 164     void OnSave(wxMouseEvent& WXUNUSED(event))
 165     {
 166         wxImage image = m_bitmap.ConvertToImage();
 167
 168         int bppselection = wxGetSingleChoiceIndex(_T("Set BMP BPP"),
 169                                                   _T("Set BMP BPP"),
 170                                                   nChoices,
 171                                                   bppchoices,
 172                                                   this);
 173         if ( bppselection == -1 )
 174         {
 175             // cancelled
 176             return;
 177         }
 178
 179         image.SetOption(wxIMAGE_OPTION_BMP_FORMAT, bppvalues[bppselection]);
 180
 181         wxString deffilename = bppchoices[bppselection];
 182         deffilename.Replace(wxT(" "), wxT("_"));
 183         deffilename += wxT(".bmp");
 184         wxString savefilename = wxFileSelector( wxT("Save Image"),
 185                                                 wxT(""),
 186                                                 deffilename,
 187                                                 (const wxChar *)NULL,
 188                                             wxT("BMP files (*.bmp)|*.bmp|")
 189                                             wxT("PNG files (*.png)|*.png|")
 190                                             wxT("JPEG files (*.jpg)|*.jpg|")
 191                                             wxT("GIF files (*.gif)|*.gif|")
 192                                             wxT("TIFF files (*.tif)|*.tif|")
 193                                             wxT("PCX files (*.pcx)|*.pcx|")
 194                                             wxT("ICO files (*.ico)|*.ico|")
 195                                             wxT("CUR files (*.cur)|*.cur"),
 196                                                 wxSAVE);
 197
 198         if ( savefilename.empty() )
 199             return;
 200
 201         if ( image.GetOptionInt(wxIMAGE_OPTION_BMP_FORMAT) == wxBMP_8BPP_PALETTE )
 202         {
 203             unsigned char *cmap = new unsigned char [256];
 204             for ( int i = 0; i < 256; i++ )
 205                 cmap[i] = i;
 206             image.SetPalette(wxPalette(256, cmap, cmap, cmap));
 207
 208             delete cmap;
 209         }
 210
 211         bool loaded;
 212         wxString extension = savefilename.AfterLast('.').Lower();
 213
 214         if (extension == _T("cur"))
 215         {
 216             image.Rescale(32,32);
 217             image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_X, 0);
 218             image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y, 0);
 219             // This shows how you can save an image with explicitly
 220             // specified image format:
 221             loaded = image.SaveFile(savefilename, wxBITMAP_TYPE_CUR);
 222         }
 223         else
 224         {
 225             // This one guesses image format from filename extension
 226             // (it may fail if the extension is not recognized):
 227             loaded = image.SaveFile(savefilename);
 228         }
 229
 230         if ( !loaded )
 231             wxMessageBox(_T("No handler for this file type."),
 232                          _T("File was not saved"),
 233                          wxOK|wxCENTRE, this);
 234     }
 235
 236 private:
 237     wxBitmap m_bitmap;
 238
 239     DECLARE_EVENT_TABLE()
 240 };
 241
 242 #ifdef wxHAVE_RAW_BITMAP
 243
 244 #include "wx/rawbmp.h"
 245
 246 class MyRawBitmapFrame : public wxFrame
 247 {
 248 public:
 249     enum
 250     {
 251         BORDER = 15,
 252         SIZE = 150,
 253         REAL_SIZE = SIZE - 2*BORDER
 254     };
 255
 256     MyRawBitmapFrame(wxFrame *parent)
 257         : wxFrame(parent, -1, _T("Raw bitmaps (how exciting)")),
 258           m_bitmap(SIZE, SIZE, 32)
 259     {
 260         SetClientSize(SIZE, SIZE);
 261
 262         // another possibility: wxNativePixelData (don't forget to remove code
 263         // setting alpha in the loop below then)
 264         typedef wxAlphaPixelData Data;
 265
 266         Data data(m_bitmap, wxPoint(BORDER, BORDER), wxSize(REAL_SIZE, REAL_SIZE));
 267         if ( !data )
 268         {
 269             wxLogError(_T("Failed to gain raw access to bitmap data"));
 270             return;
 271         }
 272
 273         data.UseAlpha();
 274
 275         Data::Iterator p(data);
 276
 277         for ( int y = 0; y < REAL_SIZE; ++y )
 278         {
 279             Data::Iterator rowStart = p;
 280
 281             int r = y < REAL_SIZE/3 ? 255 : 0,
 282                 g = (REAL_SIZE/3 <= y) && (y < 2*(REAL_SIZE/3)) ? 255 : 0,
 283                 b = 2*(REAL_SIZE/3) <= y ? 255 : 0;
 284
 285             for ( int x = 0; x < REAL_SIZE; ++x )
 286             {
 287                 p.Red() = r;
 288                 p.Green() = g;
 289                 p.Blue() = b;
 290                 p.Alpha() = (Data::Iterator::ChannelType)((x*255.)/REAL_SIZE);
 291
 292                 ++p; // same as p.OffsetX(1)
 293             }
 294
 295             p = rowStart;
 296             p.OffsetY(data, 1);
 297         }
 298     }
 299
 300     void OnPaint(wxPaintEvent& WXUNUSED(event))
 301     {
 302         wxPaintDC dc( this );
 303         dc.DrawText(_T("This is alpha and raw bitmap test"), 0, BORDER);
 304         dc.DrawText(_T("This is alpha and raw bitmap test"), 0, SIZE/2 - BORDER);
 305         dc.DrawText(_T("This is alpha and raw bitmap test"), 0, SIZE - 2*BORDER);
 306         dc.DrawBitmap( m_bitmap, 0, 0, TRUE /* use mask */ );
 307     }
 308
 309 private:
 310     wxBitmap m_bitmap;
 311
 312     DECLARE_EVENT_TABLE()
 313 };
 314
 315 #endif // wxHAVE_RAW_BITMAP
 316
 317 // MyApp
 318
 319 class MyApp: public wxApp
 320 {
 321 public:
 322     virtual bool OnInit();
 323 };
 324
 325 // main program
 326
 327 IMPLEMENT_APP(MyApp)
 328
 329 // MyCanvas
 330
 331 IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxScrolledWindow)
 332
 333 BEGIN_EVENT_TABLE(MyImageFrame, wxFrame)
 334     EVT_ERASE_BACKGROUND(MyImageFrame::OnEraseBackground)
 335     EVT_PAINT(MyImageFrame::OnPaint)
 336     EVT_LEFT_DCLICK(MyImageFrame::OnSave)
 337 END_EVENT_TABLE()
 338
 339 #ifdef wxHAVE_RAW_BITMAP
 340
 341 BEGIN_EVENT_TABLE(MyRawBitmapFrame, wxFrame)
 342     EVT_PAINT(MyRawBitmapFrame::OnPaint)
 343 END_EVENT_TABLE()
 344
 345 #endif // wxHAVE_RAW_BITMAP
 346
 347 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
 348   EVT_PAINT(MyCanvas::OnPaint)
 349 END_EVENT_TABLE()
 350
 351 MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
 352                     const wxPoint &pos, const wxSize &size )
 353         : wxScrolledWindow( parent, id, pos, size, wxSUNKEN_BORDER )
 354           , m_bmpSmileXpm((const char **) smile_xpm)
 355           , m_iconSmileXpm((const char **) smile_xpm)
 356 {
 357     my_horse_png = (wxBitmap*) NULL;
 358     my_horse_jpeg = (wxBitmap*) NULL;
 359     my_horse_gif = (wxBitmap*) NULL;
 360     my_horse_bmp = (wxBitmap*) NULL;
 361     my_horse_bmp2 = (wxBitmap*) NULL;
 362     my_horse_pcx = (wxBitmap*) NULL;
 363     my_horse_pnm = (wxBitmap*) NULL;
 364     my_horse_tiff = (wxBitmap*) NULL;
 365     my_horse_xpm = (wxBitmap*) NULL;
 366     my_horse_ico32 = (wxBitmap*) NULL;
 367     my_horse_ico16 = (wxBitmap*) NULL;
 368     my_horse_ico = (wxBitmap*) NULL;
 369     my_horse_cur = (wxBitmap*) NULL;
 370     my_horse_ani = (wxBitmap*) NULL;
 371
 372     my_smile_xbm = (wxBitmap*) NULL;
 373     my_square = (wxBitmap*) NULL;
 374     my_anti = (wxBitmap*) NULL;
 375
 376     m_ani_images = 0 ;
 377
 378     SetBackgroundColour(* wxWHITE);
 379
 380     wxBitmap bitmap( 100, 100 );
 381
 382     wxMemoryDC dc;
 383     dc.SelectObject( bitmap );
 384     dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) );
 385     dc.SetPen( *wxBLACK_PEN );
 386     dc.DrawRectangle( 0, 0, 100, 100 );
 387     dc.SetBrush( *wxWHITE_BRUSH );
 388     dc.DrawRectangle( 20, 20, 60, 60 );
 389     dc.SelectObject( wxNullBitmap );
 390
 391     // try to find the directory with our images
 392     wxString dir;
 393     if ( wxFile::Exists(wxT("./horse.png")) )
 394         dir = wxT("./");
 395     else if ( wxFile::Exists(wxT("../horse.png")) )
 396         dir = wxT("../");
 397     else
 398         wxLogWarning(wxT("Can't find image files in either '.' or '..'!"));
 399
 400     wxImage image = bitmap.ConvertToImage();
 401
 402 #if wxUSE_LIBPNG
 403     if ( !image.SaveFile( dir + _T("test.png"), wxBITMAP_TYPE_PNG ))
 404         wxLogError(wxT("Can't save file"));
 405
 406     image.Destroy();
 407
 408     if ( image.LoadFile( dir + _T("test.png") ) )
 409         my_square = new wxBitmap( image );
 410
 411     image.Destroy();
 412
 413     if ( !image.LoadFile( dir + _T("horse.png")) )
 414         wxLogError(wxT("Can't load PNG image"));
 415     else
 416         my_horse_png = new wxBitmap( image );
 417 #endif // wxUSE_LIBPNG
 418
 419 #if wxUSE_LIBJPEG
 420     image.Destroy();
 421
 422     if ( !image.LoadFile( dir + _T("horse.jpg")) )
 423         wxLogError(wxT("Can't load JPG image"));
 424     else
 425         my_horse_jpeg = new wxBitmap( image );
 426 #endif // wxUSE_LIBJPEG
 427
 428 #if wxUSE_GIF
 429     image.Destroy();
 430
 431     if ( !image.LoadFile( dir + _T("horse.gif" )) )
 432         wxLogError(wxT("Can't load GIF image"));
 433     else
 434         my_horse_gif = new wxBitmap( image );
 435 #endif
 436
 437 #if wxUSE_PCX
 438     image.Destroy();
 439
 440     if ( !image.LoadFile( dir + _T("horse.pcx"), wxBITMAP_TYPE_PCX ) )
 441         wxLogError(wxT("Can't load PCX image"));
 442     else
 443         my_horse_pcx = new wxBitmap( image );
 444 #endif
 445
 446     image.Destroy();
 447
 448     if ( !image.LoadFile( dir + _T("horse.bmp"), wxBITMAP_TYPE_BMP ) )
 449         wxLogError(wxT("Can't load BMP image"));
 450     else
 451         my_horse_bmp = new wxBitmap( image );
 452
 453 #if wxUSE_XPM
 454     image.Destroy();
 455
 456     if ( !image.LoadFile( dir + _T("horse.xpm"), wxBITMAP_TYPE_XPM ) )
 457         wxLogError(wxT("Can't load XPM image"));
 458     else
 459         my_horse_xpm = new wxBitmap( image );
 460
 461     if ( !image.SaveFile( dir + _T("test.xpm"), wxBITMAP_TYPE_XPM ))
 462         wxLogError(wxT("Can't save file"));
 463 #endif
 464
 465 #if wxUSE_PNM
 466     image.Destroy();
 467
 468     if ( !image.LoadFile( dir + _T("horse.pnm"), wxBITMAP_TYPE_PNM ) )
 469         wxLogError(wxT("Can't load PNM image"));
 470     else
 471         my_horse_pnm = new wxBitmap( image );
 472 #endif
 473
 474 #if wxUSE_LIBTIFF
 475     image.Destroy();
 476
 477     if ( !image.LoadFile( dir + _T("horse.tif"), wxBITMAP_TYPE_TIF ) )
 478         wxLogError(wxT("Can't load TIFF image"));
 479     else
 480         my_horse_tiff = new wxBitmap( image );
 481 #endif
 482
 483     CreateAntiAliasedBitmap();
 484
 485     my_smile_xbm = new wxBitmap( (const char*)smile_bits, smile_width,
 486                                  smile_height, 1 );
 487
 488     // demonstrates XPM automatically using the mask when saving
 489     if ( m_bmpSmileXpm.Ok() )
 490         m_bmpSmileXpm.SaveFile(_T("saved.xpm"), wxBITMAP_TYPE_XPM);
 491
 492 #if wxUSE_ICO_CUR
 493     image.Destroy();
 494
 495     if ( !image.LoadFile( dir + _T("horse.ico"), wxBITMAP_TYPE_ICO, 0 ) )
 496         wxLogError(wxT("Can't load first ICO image"));
 497     else
 498         my_horse_ico32 = new wxBitmap( image );
 499
 500     image.Destroy();
 501
 502     if ( !image.LoadFile( dir + _T("horse.ico"), wxBITMAP_TYPE_ICO, 1 ) )
 503         wxLogError(wxT("Can't load second ICO image"));
 504     else
 505         my_horse_ico16 = new wxBitmap( image );
 506
 507     image.Destroy();
 508
 509     if ( !image.LoadFile( dir + _T("horse.ico") ) )
 510         wxLogError(wxT("Can't load best ICO image"));
 511     else
 512         my_horse_ico = new wxBitmap( image );
 513
 514     image.Destroy();
 515
 516     if ( !image.LoadFile( dir + _T("horse.cur"), wxBITMAP_TYPE_CUR ) )
 517         wxLogError(wxT("Can't load best ICO image"));
 518     else
 519     {
 520         my_horse_cur = new wxBitmap( image );
 521         xH = 30 + image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X) ;
 522         yH = 2420 + image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y) ;
 523     }
 524
 525     m_ani_images = wxImage::GetImageCount ( dir + _T("horse3.ani"), wxBITMAP_TYPE_ANI );
 526     if (m_ani_images==0)
 527         wxLogError(wxT("No ANI-format images found"));
 528     else
 529         my_horse_ani = new wxBitmap [m_ani_images];
 530     int i ;
 531     for (i=0; i < m_ani_images; i++)
 532     {
 533         image.Destroy();
 534         if (!image.LoadFile( dir + _T("horse3.ani"), wxBITMAP_TYPE_ANI, i ))
 535         {
 536             wxString tmp = wxT("Can't load image number ");
 537             tmp << i ;
 538             wxLogError(tmp);
 539         }
 540         else
 541             my_horse_ani [i] = wxBitmap( image );
 542     }
 543 #endif // wxUSE_ICO_CUR
 544
 545     image.Destroy();
 546
 547     // test image loading from stream
 548     wxFile file(dir + _T("horse.bmp"));
 549     if ( file.IsOpened() )
 550     {
 551         off_t len = file.Length();
 552         void *data = malloc(len);
 553         if ( file.Read(data, len) != len )
 554             wxLogError(_T("Reading bitmap file failed"));
 555         else
 556         {
 557             wxMemoryInputStream mis(data, len);
 558             if ( !image.LoadFile(mis) )
 559                 wxLogError(wxT("Can't load BMP image from stream"));
 560             else
 561                 my_horse_bmp2 = new wxBitmap( image );
 562         }
 563
 564         free(data);
 565     }
 566 }
 567
 568 MyCanvas::~MyCanvas()
 569 {
 570     delete my_horse_pnm;
 571     delete my_horse_png;
 572     delete my_horse_jpeg;
 573     delete my_horse_gif;
 574     delete my_horse_bmp;
 575     delete my_horse_bmp2;
 576     delete my_horse_pcx;
 577     delete my_horse_tiff;
 578     delete my_horse_xpm;
 579     delete my_horse_ico32;
 580     delete my_horse_ico16;
 581     delete my_horse_ico;
 582     delete my_horse_cur;
 583     delete [] my_horse_ani;
 584     delete my_smile_xbm;
 585     delete my_square;
 586     delete my_anti;
 587 }
 588
 589 void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
 590 {
 591     wxPaintDC dc( this );
 592     PrepareDC( dc );
 593
 594     dc.DrawText( _T("Loaded image"), 30, 10 );
 595     if (my_square && my_square->Ok()) dc.DrawBitmap( *my_square, 30, 30 );
 596
 597     dc.DrawText( _T("Drawn directly"), 150, 10 );
 598     dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) );
 599     dc.SetPen( *wxBLACK_PEN );
 600     dc.DrawRectangle( 150, 30, 100, 100 );
 601     dc.SetBrush( *wxWHITE_BRUSH );
 602     dc.DrawRectangle( 170, 50, 60, 60 );
 603
 604     if (my_anti && my_anti->Ok())
 605         dc.DrawBitmap( *my_anti, 280, 30 );
 606
 607     dc.DrawText( _T("PNG handler"), 30, 135 );
 608     if (my_horse_png && my_horse_png->Ok())
 609     {
 610         dc.DrawBitmap( *my_horse_png, 30, 150 );
 611         wxRect rect(0,0,100,100);
 612         wxBitmap sub( my_horse_png->GetSubBitmap(rect) );
 613         dc.DrawText( _T("GetSubBitmap()"), 280, 190 );
 614         dc.DrawBitmap( sub, 280, 210 );
 615     }
 616
 617     dc.DrawText( _T("JPEG handler"), 30, 365 );
 618     if (my_horse_jpeg && my_horse_jpeg->Ok())
 619         dc.DrawBitmap( *my_horse_jpeg, 30, 380 );
 620
 621     dc.DrawText( _T("GIF handler"), 30, 595 );
 622     if (my_horse_gif && my_horse_gif->Ok())
 623         dc.DrawBitmap( *my_horse_gif, 30, 610 );
 624
 625     dc.DrawText( _T("PCX handler"), 30, 825 );
 626     if (my_horse_pcx && my_horse_pcx->Ok())
 627         dc.DrawBitmap( *my_horse_pcx, 30, 840 );
 628
 629     dc.DrawText( _T("BMP handler"), 30, 1055 );
 630     if (my_horse_bmp && my_horse_bmp->Ok())
 631         dc.DrawBitmap( *my_horse_bmp, 30, 1070 );
 632
 633     dc.DrawText( _T("BMP read from memory"), 280, 1055 );
 634     if (my_horse_bmp2 && my_horse_bmp2->Ok())
 635         dc.DrawBitmap( *my_horse_bmp2, 280, 1070 );
 636
 637     dc.DrawText( _T("PNM handler"), 30, 1285 );
 638     if (my_horse_pnm && my_horse_pnm->Ok())
 639         dc.DrawBitmap( *my_horse_pnm, 30, 1300 );
 640
 641     dc.DrawText( _T("TIFF handler"), 30, 1515 );
 642     if (my_horse_tiff && my_horse_tiff->Ok())
 643         dc.DrawBitmap( *my_horse_tiff, 30, 1530 );
 644
 645     dc.DrawText( _T("XPM handler"), 30, 1745 );
 646     if (my_horse_xpm && my_horse_xpm->Ok())
 647         dc.DrawBitmap( *my_horse_xpm, 30, 1760 );
 648
 649
 650     if (my_smile_xbm && my_smile_xbm->Ok())
 651     {
 652         dc.DrawText( _T("XBM bitmap"), 30, 1975 );
 653         dc.DrawText( _T("(green on red)"), 30, 1990 );
 654         dc.SetTextForeground( _T("GREEN") );
 655         dc.SetTextBackground( _T("RED") );
 656         dc.DrawBitmap( *my_smile_xbm, 30, 2010 );
 657
 658         dc.SetTextForeground( wxT("BLACK") );
 659         dc.DrawText( _T("After wxImage conversion"), 150, 1975 );
 660         dc.DrawText( _T("(red on white)"), 150, 1990 );
 661         dc.SetTextForeground( wxT("RED") );
 662         wxImage i = my_smile_xbm->ConvertToImage();
 663         i.SetMaskColour( 255, 255, 255 );
 664         i.Replace( 0, 0, 0,
 665                wxRED_PEN->GetColour().Red(),
 666                wxRED_PEN->GetColour().Green(),
 667                wxRED_PEN->GetColour().Blue() );
 668         dc.DrawBitmap( wxBitmap(i), 150, 2010, TRUE );
 669         dc.SetTextForeground( wxT("BLACK") );
 670     }
 671
 672
 673     wxBitmap mono( 60,50,1 );
 674     wxMemoryDC memdc;
 675     memdc.SelectObject( mono );
 676     memdc.SetPen( *wxBLACK_PEN );
 677     memdc.SetBrush( *wxWHITE_BRUSH );
 678     memdc.DrawRectangle( 0,0,60,50 );
 679     memdc.SetTextForeground( *wxBLACK );
 680 #ifndef __WXGTK20__
 681     // I cannot convince GTK2 to draw into mono bitmaps
 682     memdc.DrawText( _T("Hi!"), 5, 5 );
 683 #endif
 684     memdc.SetBrush( *wxBLACK_BRUSH );
 685     memdc.DrawRectangle( 33,5,20,20 );
 686     memdc.SetPen( *wxRED_PEN );
 687     memdc.DrawLine( 5, 42, 50, 42 );
 688     memdc.SelectObject( wxNullBitmap );
 689
 690     if (mono.Ok())
 691     {
 692         dc.DrawText( _T("Mono bitmap"), 30, 2095 );
 693         dc.DrawText( _T("(red on green)"), 30, 2110 );
 694         dc.SetTextForeground( wxT("RED") );
 695         dc.SetTextBackground( wxT("GREEN") );
 696         dc.DrawBitmap( mono, 30, 2130 );
 697
 698         dc.SetTextForeground( wxT("BLACK") );
 699         dc.DrawText( _T("After wxImage conversion"), 150, 2095 );
 700         dc.DrawText( _T("(red on white)"), 150, 2110 );
 701         dc.SetTextForeground( wxT("RED") );
 702         wxImage i = mono.ConvertToImage();
 703         i.SetMaskColour( 255,255,255 );
 704         i.Replace( 0,0,0,
 705                wxRED_PEN->GetColour().Red(),
 706                wxRED_PEN->GetColour().Green(),
 707                wxRED_PEN->GetColour().Blue() );
 708         dc.DrawBitmap( wxBitmap(i), 150, 2130, TRUE );
 709         dc.SetTextForeground( wxT("BLACK") );
 710     }
 711
 712     // For testing transparency
 713     dc.SetBrush( *wxRED_BRUSH );
 714     dc.DrawRectangle( 20, 2220, 560, 68 );
 715
 716     dc.DrawText(_T("XPM bitmap"), 30, 2230 );
 717     if ( m_bmpSmileXpm.Ok() )
 718         dc.DrawBitmap(m_bmpSmileXpm, 30, 2250, TRUE);
 719
 720     dc.DrawText(_T("XPM icon"), 110, 2230 );
 721     if ( m_iconSmileXpm.Ok() )
 722         dc.DrawIcon(m_iconSmileXpm, 110, 2250);
 723
 724     // testing icon -> bitmap conversion
 725     wxBitmap to_blit( m_iconSmileXpm );
 726     if (to_blit.Ok())
 727     {
 728         dc.DrawText( _T("SubBitmap"), 170, 2230 );
 729         wxBitmap sub = to_blit.GetSubBitmap( wxRect(0,0,15,15) );
 730         if (sub.Ok())
 731             dc.DrawBitmap( sub, 170, 2250, TRUE );
 732
 733         dc.DrawText( _T("Enlarged"), 250, 2230 );
 734         dc.SetUserScale( 1.5, 1.5 );
 735         dc.DrawBitmap( to_blit, (int)(250/1.5), (int)(2250/1.5), TRUE );
 736         dc.SetUserScale( 2, 2 );
 737         dc.DrawBitmap( to_blit, (int)(300/2), (int)(2250/2), TRUE );
 738         dc.SetUserScale( 1.0, 1.0 );
 739
 740         dc.DrawText( _T("Blit"), 400, 2230);
 741         wxMemoryDC blit_dc;
 742         blit_dc.SelectObject( to_blit );
 743         dc.Blit( 400, 2250, to_blit.GetWidth(), to_blit.GetHeight(), &blit_dc, 0, 0, wxCOPY, TRUE );
 744         dc.SetUserScale( 1.5, 1.5 );
 745         dc.Blit( (int)(450/1.5), (int)(2250/1.5), to_blit.GetWidth(), to_blit.GetHeight(), &blit_dc, 0, 0, wxCOPY, TRUE );
 746         dc.SetUserScale( 2, 2 );
 747         dc.Blit( (int)(500/2), (int)(2250/2), to_blit.GetWidth(), to_blit.GetHeight(), &blit_dc, 0, 0, wxCOPY, TRUE );
 748         dc.SetUserScale( 1.0, 1.0 );
 749     }
 750
 751     dc.DrawText( _T("ICO handler (1st image)"), 30, 2290 );
 752     if (my_horse_ico32 && my_horse_ico32->Ok())
 753         dc.DrawBitmap( *my_horse_ico32, 30, 2330, TRUE );
 754
 755     dc.DrawText( _T("ICO handler (2nd image)"), 230, 2290 );
 756     if (my_horse_ico16 && my_horse_ico16->Ok())
 757         dc.DrawBitmap( *my_horse_ico16, 230, 2330, TRUE );
 758
 759     dc.DrawText( _T("ICO handler (best image)"), 430, 2290 );
 760     if (my_horse_ico && my_horse_ico->Ok())
 761         dc.DrawBitmap( *my_horse_ico, 430, 2330, TRUE );
 762
 763     dc.DrawText( _T("CUR handler"), 30, 2390 );
 764     if (my_horse_cur && my_horse_cur->Ok())
 765     {
 766         dc.DrawBitmap( *my_horse_cur, 30, 2420, TRUE );
 767         dc.SetPen (*wxRED_PEN);
 768         dc.DrawLine (xH-10,yH,xH+10,yH);
 769         dc.DrawLine (xH,yH-10,xH,yH+10);
 770     }
 771     dc.DrawText( _T("ANI handler"), 230, 2390 );
 772     int i ;
 773     for (i=0; i < m_ani_images; i ++)
 774         if (my_horse_ani[i].Ok())
 775         {
 776             dc.DrawBitmap( my_horse_ani[i], 230 + i * 2 * my_horse_ani[i].GetWidth() , 2420, TRUE );
 777         }
 778 }
 779
 780 void MyCanvas::CreateAntiAliasedBitmap()
 781 {
 782   wxBitmap bitmap( 300, 300 );
 783
 784   wxMemoryDC dc;
 785
 786   dc.SelectObject( bitmap );
 787
 788   dc.Clear();
 789
 790   dc.SetFont( wxFont( 24, wxDECORATIVE, wxNORMAL, wxNORMAL) );
 791   dc.SetTextForeground( wxT("RED") );
 792   dc.DrawText( _T("This is anti-aliased Text."), 20, 20 );
 793   dc.DrawText( _T("And a Rectangle."), 20, 60 );
 794
 795   dc.SetBrush( *wxRED_BRUSH );
 796   dc.SetPen( *wxTRANSPARENT_PEN );
 797   dc.DrawRoundedRectangle( 20, 100, 200, 180, 20 );
 798
 799   wxImage original= bitmap.ConvertToImage();
 800   wxImage anti( 150, 150 );
 801
 802   /* This is quite slow, but safe. Use wxImage::GetData() for speed instead. */
 803
 804   for (int y = 1; y < 149; y++)
 805     for (int x = 1; x < 149; x++)
 806     {
 807        int red = original.GetRed( x*2, y*2 ) +
 808                  original.GetRed( x*2-1, y*2 ) +
 809                  original.GetRed( x*2, y*2+1 ) +
 810                  original.GetRed( x*2+1, y*2+1 );
 811        red = red/4;
 812
 813        int green = original.GetGreen( x*2, y*2 ) +
 814                    original.GetGreen( x*2-1, y*2 ) +
 815                    original.GetGreen( x*2, y*2+1 ) +
 816                    original.GetGreen( x*2+1, y*2+1 );
 817        green = green/4;
 818
 819        int blue = original.GetBlue( x*2, y*2 ) +
 820                   original.GetBlue( x*2-1, y*2 ) +
 821                   original.GetBlue( x*2, y*2+1 ) +
 822                   original.GetBlue( x*2+1, y*2+1 );
 823        blue = blue/4;
 824        anti.SetRGB( x, y, red, green, blue );
 825     }
 826   my_anti = new wxBitmap(anti);
 827 }
 828
 829 // MyFrame
 830
 831 enum
 832 {
 833     ID_QUIT  = 108,
 834     ID_ABOUT,
 835     ID_NEW,
 836     ID_SHOWRAW
 837 };
 838
 839 IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )
 840
 841 BEGIN_EVENT_TABLE(MyFrame,wxFrame)
 842   EVT_MENU    (ID_ABOUT, MyFrame::OnAbout)
 843   EVT_MENU    (ID_QUIT,  MyFrame::OnQuit)
 844   EVT_MENU    (ID_NEW,  MyFrame::OnNewFrame)
 845 #ifdef wxHAVE_RAW_BITMAP
 846   EVT_MENU    (ID_SHOWRAW,  MyFrame::OnTestRawBitmap)
 847 #endif
 848
 849 #if wxUSE_CLIPBOARD
 850     EVT_MENU(wxID_COPY, MyFrame::OnCopy)
 851     EVT_MENU(wxID_PASTE, MyFrame::OnPaste)
 852 #endif // wxUSE_CLIPBOARD
 853 END_EVENT_TABLE()
 854
 855 MyFrame::MyFrame()
 856        : wxFrame( (wxFrame *)NULL, -1, _T("wxImage sample"),
 857                   wxPoint(20,20), wxSize(470,360) )
 858 {
 859   wxMenuBar *menu_bar = new wxMenuBar();
 860
 861   wxMenu *menuImage = new wxMenu;
 862   menuImage->Append( ID_NEW, _T("&Show any image...\tCtrl-O"));
 863
 864 #ifdef wxHAVE_RAW_BITMAP
 865   menuImage->Append( ID_SHOWRAW, _T("Test &raw bitmap...\tCtrl-R"));
 866 #endif
 867   menuImage->AppendSeparator();
 868   menuImage->Append( ID_ABOUT, _T("&About..."));
 869   menuImage->AppendSeparator();
 870   menuImage->Append( ID_QUIT, _T("E&xit\tCtrl-Q"));
 871   menu_bar->Append(menuImage, _T("&Image"));
 872
 873 #if wxUSE_CLIPBOARD
 874   wxMenu *menuClipboard = new wxMenu;
 875   menuClipboard->Append(wxID_COPY, _T("&Copy test image\tCtrl-C"));
 876   menuClipboard->Append(wxID_PASTE, _T("&Paste image\tCtrl-V"));
 877   menu_bar->Append(menuClipboard, _T("&Clipboard"));
 878 #endif // wxUSE_CLIPBOARD
 879
 880   SetMenuBar( menu_bar );
 881
 882   CreateStatusBar(2);
 883   int widths[] = { -1, 100 };
 884   SetStatusWidths( 2, widths );
 885
 886   m_canvas = new MyCanvas( this, -1, wxPoint(0,0), wxSize(10,10) );
 887
 888   // 500 width * 2500 height
 889   m_canvas->SetScrollbars( 10, 10, 50, 250 );
 890 }
 891
 892 void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
 893 {
 894   Close( TRUE );
 895 }
 896
 897 void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) )
 898 {
 899   (void)wxMessageBox( _T("wxImage demo\n")
 900                       _T("Robert Roebling (c) 1998,2000"),
 901                       _T("About wxImage Demo"), wxICON_INFORMATION | wxOK );
 902 }
 903
 904 void MyFrame::OnNewFrame( wxCommandEvent &WXUNUSED(event) )
 905 {
 906     wxString filename = wxFileSelector(_T("Select image file"));
 907     if ( !filename )
 908         return;
 909
 910     wxImage image;
 911     if ( !image.LoadFile(filename) )
 912     {
 913         wxLogError(_T("Couldn't load image from '%s'."), filename.c_str());
 914
 915         return;
 916     }
 917
 918     (new MyImageFrame(this, wxBitmap(image)))->Show();
 919 }
 920
 921 #ifdef wxHAVE_RAW_BITMAP
 922
 923 void MyFrame::OnTestRawBitmap( wxCommandEvent &WXUNUSED(event) )
 924 {
 925     (new MyRawBitmapFrame(this))->Show();
 926 }
 927
 928 #endif // wxHAVE_RAW_BITMAP
 929
 930 #if wxUSE_CLIPBOARD
 931
 932 void MyFrame::OnCopy(wxCommandEvent& WXUNUSED(event))
 933 {
 934     wxBitmapDataObject *dobjBmp = new wxBitmapDataObject;
 935     dobjBmp->SetBitmap(*m_canvas->my_horse_png);
 936
 937     wxTheClipboard->Open();
 938
 939     if ( !wxTheClipboard->SetData(dobjBmp) )
 940     {
 941         wxLogError(_T("Failed to copy bitmap to clipboard"));
 942     }
 943
 944     wxTheClipboard->Close();
 945 }
 946
 947 void MyFrame::OnPaste(wxCommandEvent& WXUNUSED(event))
 948 {
 949     wxBitmapDataObject dobjBmp;
 950
 951     wxTheClipboard->Open();
 952     if ( !wxTheClipboard->GetData(dobjBmp) )
 953     {
 954         wxLogMessage(_T("No bitmap data in the clipboard"));
 955     }
 956     else
 957     {
 958         (new MyImageFrame(this, dobjBmp.GetBitmap()))->Show();
 959     }
 960     wxTheClipboard->Close();
 961 }
 962
 963 #endif // wxUSE_CLIPBOARD
 964
 965 //-----------------------------------------------------------------------------
 966 // MyApp
 967 //-----------------------------------------------------------------------------
 968
 969 bool MyApp::OnInit()
 970 {
 971 #if wxUSE_LIBPNG
 972   wxImage::AddHandler( new wxPNGHandler );
 973 #endif
 974
 975 #if wxUSE_LIBJPEG
 976   wxImage::AddHandler( new wxJPEGHandler );
 977 #endif
 978
 979 #if wxUSE_LIBTIFF
 980   wxImage::AddHandler( new wxTIFFHandler );
 981 #endif
 982
 983 #if wxUSE_GIF
 984   wxImage::AddHandler( new wxGIFHandler );
 985 #endif
 986
 987 #if wxUSE_PCX
 988   wxImage::AddHandler( new wxPCXHandler );
 989 #endif
 990
 991 #if wxUSE_PNM
 992   wxImage::AddHandler( new wxPNMHandler );
 993 #endif
 994
 995 #if wxUSE_XPM
 996   wxImage::AddHandler( new wxXPMHandler );
 997 #endif
 998
 999 #if wxUSE_ICO_CUR
1000   wxImage::AddHandler( new wxICOHandler );
1001   wxImage::AddHandler( new wxCURHandler );
1002   wxImage::AddHandler( new wxANIHandler );
1003 #endif
1004
1005   wxFrame *frame = new MyFrame();
1006   frame->Show( TRUE );
1007
1008   return TRUE;
1009 }
1010