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