src/os2/gdiimage.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/gdiimage.cpp
   3 // Purpose:     wxGDIImage implementation
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     20.11.99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1999 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "gdiimage.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27
  28 #ifndef WX_PRECOMP
  29     #include "wx/string.h"
  30 #endif // WX_PRECOMP
  31
  32 #include "wx/os2/private.h"
  33 #include "wx/app.h"
  34 #include "wx/os2/gdiimage.h"
  35
  36 #include "wx/listimpl.cpp"
  37 WX_DEFINE_LIST(wxGDIImageHandlerList);
  38
  39 // ----------------------------------------------------------------------------
  40 // private classes
  41 // ----------------------------------------------------------------------------
  42
  43 // all image handlers are declared/defined in this file because the outside
  44 // world doesn't have to know about them (but only about wxBITMAP_TYPE_XXX ids)
  45
  46 class WXDLLEXPORT wxBMPFileHandler : public wxBitmapHandler
  47 {
  48 public:
  49     wxBMPFileHandler() : wxBitmapHandler(_T("Windows bitmap file"), _T("bmp"),
  50                                          wxBITMAP_TYPE_BMP)
  51     {
  52     }
  53
  54     virtual bool LoadFile( wxBitmap*       pBitmap
  55                           ,const wxString& rName
  56                           ,HPS             hPs
  57                           ,long            lFlags
  58                           ,int             nDesiredWidth
  59                           ,int             nDesiredHeight
  60                          );
  61     virtual bool SaveFile( wxBitmap*        pBitmap
  62                           ,const wxString&  rName
  63                           ,int              lType
  64                           ,const wxPalette* pPalette = NULL
  65                          );
  66
  67 private:
  68     inline virtual bool LoadFile( wxBitmap*       pBitmap
  69                                  ,int             nId
  70                                  ,long            lFlags
  71                                  ,int             nDesiredWidth
  72                                  ,int             nDesiredHeight
  73                                 )
  74     {
  75         return wxBitmapHandler::LoadFile( pBitmap
  76                                          ,nId
  77                                          ,lFlags
  78                                          ,nDesiredWidth
  79                                          ,nDesiredHeight
  80                                         );
  81     }
  82     DECLARE_DYNAMIC_CLASS(wxBMPFileHandler)
  83 };
  84
  85 class WXDLLEXPORT wxBMPResourceHandler: public wxBitmapHandler
  86 {
  87 public:
  88     wxBMPResourceHandler() : wxBitmapHandler(_T("Windows bitmap resource"),
  89                                              wxEmptyString,
  90                                              wxBITMAP_TYPE_BMP_RESOURCE)
  91     {
  92     }
  93
  94     virtual bool LoadFile( wxBitmap*       pBitmap
  95                           ,int             nId
  96                           ,long            lFlags
  97                           ,int             nDesiredWidth
  98                           ,int             nDesiredHeight
  99                          );
 100
 101 private:
 102     DECLARE_DYNAMIC_CLASS(wxBMPResourceHandler)
 103 };
 104
 105 class WXDLLEXPORT wxIconHandler : public wxGDIImageHandler
 106 {
 107 public:
 108     wxIconHandler( const wxString& rName
 109                   ,const wxString& rExt
 110                   ,long            lType
 111                  ) : wxGDIImageHandler( rName
 112                                        ,rExt
 113                                        ,lType
 114                                       )
 115     {
 116     }
 117
 118     // creating and saving icons is not supported
 119     virtual bool Create( wxGDIImage* WXUNUSED(pImage)
 120                         ,void*       WXUNUSED(pData)
 121                         ,long        WXUNUSED(lFlags)
 122                         ,int         WXUNUSED(nWidth)
 123                         ,int         WXUNUSED(nHeight)
 124                         ,int         WXUNUSED(nDepth) = 1
 125                        )
 126     {
 127         return(FALSE);
 128     }
 129
 130     virtual bool Save( wxGDIImage*     WXUNUSED(pImage)
 131                       ,const wxString& WXUNUSED(rName)
 132                       ,int             WXUNUSED(nType)
 133                      )
 134     {
 135         return(FALSE);
 136     }
 137     virtual bool Load( wxGDIImage*     pImage
 138                       ,const wxString& rName
 139                       ,HPS             hPs
 140                       ,long            lFlags
 141                       ,int             nDesiredWidth
 142                       ,int             nDesiredHeight
 143                      )
 144     {
 145         wxIcon*                     pIcon = wxDynamicCast(pImage, wxIcon);
 146         wxCHECK_MSG(pIcon, FALSE, _T("wxIconHandler only works with icons"));
 147
 148         return LoadIcon( pIcon
 149                         ,rName
 150                         ,hPs
 151                         ,lFlags
 152                         ,nDesiredWidth
 153                         ,nDesiredHeight
 154                        );
 155     }
 156
 157 protected:
 158     virtual bool LoadIcon( wxIcon*         pIcon
 159                           ,const wxString& rName
 160                           ,HPS             hPs
 161                           ,long            lFlags
 162                           ,int             nDesiredWidth = -1
 163                           ,int             nDesiredHeight = -1
 164                          ) = 0;
 165 private:
 166     inline virtual bool Load( wxGDIImage*     pImage
 167                              ,int             nId
 168                              ,long            lFlags
 169                              ,int             nDesiredWidth
 170                              ,int             nDesiredHeight
 171                             )
 172     {
 173         return FALSE;
 174     }
 175 };
 176
 177 class WXDLLEXPORT wxICOFileHandler : public wxIconHandler
 178 {
 179 public:
 180     wxICOFileHandler() : wxIconHandler(_T("ICO icon file"),
 181                                        _T("ico"),
 182                                        wxBITMAP_TYPE_ICO)
 183     {
 184     }
 185
 186     virtual bool LoadIcon( wxIcon *        pIcon
 187                           ,const wxString& rName
 188                           ,HPS             hPs
 189                           ,long            lFlags
 190                           ,int             nDesiredWidth = -1
 191                           ,int             nDesiredHeight = -1
 192                          );
 193
 194 private:
 195     DECLARE_DYNAMIC_CLASS(wxICOFileHandler)
 196 };
 197
 198 class WXDLLEXPORT wxICOResourceHandler: public wxIconHandler
 199 {
 200 public:
 201     wxICOResourceHandler() : wxIconHandler(_T("ICO resource"),
 202                                            _T("ico"),
 203                                            wxBITMAP_TYPE_ICO_RESOURCE)
 204     {
 205     }
 206
 207     virtual bool LoadIcon( wxIcon*         pIcon
 208                           ,const wxString& rName
 209                           ,HPS             hPs
 210                           ,long            lFlags
 211                           ,int             nDesiredWidth = -1
 212                           ,int             nDesiredHeight = -1
 213                          );
 214
 215 private:
 216     DECLARE_DYNAMIC_CLASS(wxICOResourceHandler)
 217 };
 218
 219 // ----------------------------------------------------------------------------
 220 // wxWin macros
 221 // ----------------------------------------------------------------------------
 222
 223 #if !USE_SHARED_LIBRARIES
 224     IMPLEMENT_DYNAMIC_CLASS(wxBMPFileHandler, wxBitmapHandler)
 225     IMPLEMENT_DYNAMIC_CLASS(wxBMPResourceHandler, wxBitmapHandler)
 226     IMPLEMENT_DYNAMIC_CLASS(wxICOFileHandler, wxObject)
 227     IMPLEMENT_DYNAMIC_CLASS(wxICOResourceHandler, wxObject)
 228 #endif
 229
 230 // ----------------------------------------------------------------------------
 231 // private functions
 232 // ----------------------------------------------------------------------------
 233
 234 static wxSize GetHiconSize(WXHICON hicon);
 235
 236 // ============================================================================
 237 // implementation
 238 // ============================================================================
 239
 240 wxGDIImageHandlerList wxGDIImage::ms_handlers;
 241
 242 // ----------------------------------------------------------------------------
 243 // wxGDIImage functions forwarded to wxGDIImageRefData
 244 // ----------------------------------------------------------------------------
 245
 246 bool wxGDIImage::FreeResource(
 247   bool                              WXUNUSED(bForce)
 248 )
 249 {
 250     if ( !IsNull() )
 251     {
 252         GetGDIImageData()->Free();
 253         GetGDIImageData()->m_hHandle = 0;
 254     }
 255
 256     return(TRUE);
 257 }
 258
 259 WXHANDLE wxGDIImage::GetResourceHandle()
 260 {
 261     return GetHandle();
 262 }
 263
 264 // ----------------------------------------------------------------------------
 265 // wxGDIImage handler stuff
 266 // ----------------------------------------------------------------------------
 267
 268 void wxGDIImage::AddHandler(
 269   wxGDIImageHandler*                pHandler
 270 )
 271 {
 272     ms_handlers.Append(pHandler);
 273 }
 274
 275 void wxGDIImage::InsertHandler(
 276   wxGDIImageHandler*                pHandler
 277 )
 278 {
 279     ms_handlers.Insert(pHandler);
 280 }
 281
 282 bool wxGDIImage::RemoveHandler(
 283   const wxString&                   rName
 284 )
 285 {
 286     wxGDIImageHandler*              pHandler = FindHandler(rName);
 287
 288     if (pHandler)
 289     {
 290         ms_handlers.DeleteObject(pHandler);
 291         return(TRUE);
 292     }
 293     else
 294         return(FALSE);
 295 }
 296
 297 wxGDIImageHandler* wxGDIImage::FindHandler(
 298   const wxString&                   rName
 299 )
 300 {
 301     wxGDIImageHandlerList::compatibility_iterator node = ms_handlers.GetFirst();
 302     while ( node )
 303     {
 304         wxGDIImageHandler *handler = node->GetData();
 305         if ( handler->GetName() == name )
 306             return handler;
 307         node = node->GetNext();
 308     }
 309     return((wxGDIImageHandler*)NULL);
 310 }
 311
 312 wxGDIImageHandler* wxGDIImage::FindHandler(
 313   const wxString&                   rExtension
 314 , long                              lType
 315 )
 316 {
 317     wxGDIImageHandlerList::compatibility_iterator node = ms_handlers.GetFirst();
 318     while ( node )
 319     {
 320         wxGDIImageHandler *handler = node->GetData();
 321         if ( (handler->GetExtension() = extension) &&
 322              (type == -1 || handler->GetType() == type) )
 323         {
 324             return handler;
 325         }
 326
 327         node = node->GetNext();
 328     }
 329     return((wxGDIImageHandler*)NULL);
 330 }
 331
 332 wxGDIImageHandler* wxGDIImage::FindHandler(
 333   long                              lType
 334 )
 335 {
 336     wxGDIImageHandlerList::compatibility_iterator node = ms_handlers.GetFirst();
 337     while ( node )
 338     {
 339         wxGDIImageHandler *handler = node->GetData();
 340         if ( handler->GetType() == type )
 341             return handler;
 342
 343         node = node->GetNext();
 344     }
 345
 346     return((wxGDIImageHandler*)NULL);
 347 }
 348
 349 void wxGDIImage::CleanUpHandlers()
 350 {
 351     wxGDIImageHandlerList::compatibility_iterator node = ms_handlers.GetFirst();
 352     while ( node )
 353     {
 354         wxGDIImageHandler *handler = node->GetData();
 355         wxGDIImageHandlerList::compatibility_iterator next = node->GetNext();
 356         delete handler;
 357         ms_handlers.Erase( node );
 358         node = next;
 359     }
 360 }
 361
 362 void wxGDIImage::InitStandardHandlers()
 363 {
 364     AddHandler(new wxBMPResourceHandler);
 365     AddHandler(new wxBMPFileHandler);
 366     AddHandler(new wxICOResourceHandler);
 367     AddHandler(new wxICOFileHandler);
 368 }
 369
 370 // ----------------------------------------------------------------------------
 371 // wxBitmap handlers
 372 // ----------------------------------------------------------------------------
 373
 374 bool wxBMPResourceHandler::LoadFile(
 375   wxBitmap*                         pBitmap
 376 , int                               nId
 377 , long                              lFlags
 378 , int                               nDesiredWidth
 379 , int                               nDesiredHeight
 380 )
 381 {
 382     SIZEL                               vSize = {0, 0};
 383     DEVOPENSTRUC                        vDop  = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
 384     HDC                                 hDC   = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
 385     HPS                                 hPS   = ::GpiCreatePS(vHabmain, hDC, &vSize, PU_PELS | GPIA_ASSOC);
 386
 387     pBitmap->SetHBITMAP((WXHBITMAP)::GpiLoadBitmap( hPS
 388                                                    ,NULLHANDLE
 389                                                    ,nId
 390                                                    ,0
 391                                                    ,0
 392                                                   ));
 393     ::GpiDestroyPS(hPS);
 394     ::DevCloseDC(hDC);
 395
 396     wxBitmapRefData*                pData = pBitmap->GetBitmapData();
 397
 398     if ( pBitmap->Ok() )
 399     {
 400         BITMAPINFOHEADER            vBmph;
 401
 402         ::GpiQueryBitmapParameters(GetHbitmapOf(*pBitmap), &vBmph);
 403         pData->m_nWidth  = vBmph.cx;
 404         pData->m_nHeight = vBmph.cy;
 405         pData->m_nDepth  = vBmph.cBitCount;
 406     }
 407     return(pBitmap->Ok());
 408 } // end of wxBMPResourceHandler::LoadFile
 409
 410 bool wxBMPFileHandler::LoadFile(
 411   wxBitmap*                         pBitmap
 412 , const wxString&                   rName
 413 , HPS                               hPs
 414 , long                              WXUNUSED(lFlags)
 415 , int                               WXUNUSED(nDesiredWidth)
 416 , int                               WXUNUSED(nDesiredHeight)
 417 )
 418 {
 419 #if wxUSE_IMAGE_LOADING_IN_OS2
 420     wxPalette*                      pPalette = NULL;
 421
 422     bool                            bSuccess = FALSE; /* wxLoadIntoBitmap( WXSTRINGCAST rName
 423                                                                 ,pBitmap
 424                                                                 ,&pPalette
 425                                                                ) != 0; */
 426     if (bSuccess && pPalette)
 427     {
 428         pBitmap->SetPalette(*pPalette);
 429     }
 430
 431     // it was copied by the bitmap if it was loaded successfully
 432     delete pPalette;
 433
 434     return(bSuccess);
 435 #else
 436     return(FALSE);
 437 #endif
 438 }
 439
 440 bool wxBMPFileHandler::SaveFile(
 441   wxBitmap*                         pBitmap
 442 , const wxString&                   rName
 443 , int                               WXUNUSED(nType)
 444 , const wxPalette*                  pPal
 445 )
 446 {
 447 #if wxUSE_IMAGE_LOADING_IN_OS2
 448     wxPalette*                      pActualPalette = (wxPalette *)pPal;
 449
 450     if (!pActualPalette)
 451         pActualPalette = pBitmap->GetPalette();
 452     /* return(wxSaveBitmap( WXSTRINGCAST rName
 453                         ,pBitmap
 454                         ,pActualPalette
 455                        ) != 0); */
 456     return(FALSE);
 457 #else
 458     return(FALSE);
 459 #endif
 460 }
 461
 462 // ----------------------------------------------------------------------------
 463 // wxIcon handlers
 464 // ----------------------------------------------------------------------------
 465
 466 bool wxICOFileHandler::LoadIcon(
 467   wxIcon*                           pIcon
 468 , const wxString&                   rName
 469 , HPS                               hPs
 470 , long                              lFlags
 471 , int                               nDesiredWidth
 472 , int                               nDesiredHeight
 473 )
 474 {
 475 #if wxUSE_RESOURCE_LOADING_IN_OS2
 476     pIcon->UnRef();
 477
 478     // actual size
 479     wxSize                          vSize;
 480
 481     return(FALSE);
 482 #else
 483     return(FALSE);
 484 #endif
 485 }
 486
 487 bool wxICOResourceHandler::LoadIcon(
 488   wxIcon*                           pIcon
 489 , const wxString&                   rName
 490 , HPS                               hPs
 491 , long                              lFlags
 492 , int                               WXUNUSED(nDesiredWidth)
 493 , int                               WXUNUSED(nDesiredHeight)
 494 )
 495 {
 496     HPOINTER                        hIcon;
 497
 498     hIcon = ::WinLoadFileIcon( (PSZ)rName.c_str()
 499                               ,TRUE // load for private use
 500                              );
 501
 502     pIcon->SetSize(32, 32); // all OS/2 icons are 32 x 32
 503
 504
 505     pIcon->SetHICON((WXHICON)hIcon);
 506
 507     return pIcon->Ok();
 508 } // end of wxICOResourceHandler::LoadIcon
 509
 510 // ----------------------------------------------------------------------------
 511 // private functions
 512 // ----------------------------------------------------------------------------
 513
 514 static wxSize GetHiconSize(
 515   WXHICON                           hicon
 516 )
 517 {
 518     wxSize                          vSize(32, 32);    // default
 519
 520     // all OS/2 icons are 32x32
 521     return(vSize);
 522 }
 523