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 license
  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/xpmhand.h"
  35 #include "wx/os2/gdiimage.h"
  36
  37 // ----------------------------------------------------------------------------
  38 // private classes
  39 // ----------------------------------------------------------------------------
  40
  41 // all image handlers are declared/defined in this file because the outside
  42 // world doesn't have to know about them (but only about wxBITMAP_TYPE_XXX ids)
  43
  44 class WXDLLEXPORT wxBMPFileHandler : public wxBitmapHandler
  45 {
  46 public:
  47     wxBMPFileHandler() : wxBitmapHandler(_T("Windows bitmap file"), _T("bmp"),
  48                                          wxBITMAP_TYPE_BMP)
  49     {
  50     }
  51
  52     virtual bool LoadFile( wxBitmap*       pBitmap
  53                           ,const wxString& rName
  54                           ,HPS             hPs
  55                           ,long            lFlags
  56                           ,int             nDesiredWidth
  57                           ,int             nDesiredHeight
  58                          );
  59     virtual bool SaveFile( wxBitmap*        pBitmap
  60                           ,const wxString&  rName
  61                           ,int              lType
  62                           ,const wxPalette* pPalette = NULL
  63                          );
  64
  65 private:
  66     DECLARE_DYNAMIC_CLASS(wxBMPFileHandler)
  67 };
  68
  69 class WXDLLEXPORT wxBMPResourceHandler: public wxBitmapHandler
  70 {
  71 public:
  72     wxBMPResourceHandler() : wxBitmapHandler(_T("Windows bitmap resource"),
  73                                              wxEmptyString,
  74                                              wxBITMAP_TYPE_BMP_RESOURCE)
  75     {
  76     }
  77
  78     virtual bool LoadFile( wxBitmap*       pBitmap
  79                           ,const wxString& rName
  80                           ,HPS             hPs
  81                           ,long            lFlags
  82                           ,int             nDesiredWidth
  83                           ,int             nDesiredHeight
  84                          );
  85
  86 private:
  87     DECLARE_DYNAMIC_CLASS(wxBMPResourceHandler)
  88 };
  89
  90 class WXDLLEXPORT wxIconHandler : public wxGDIImageHandler
  91 {
  92 public:
  93     wxIconHandler( const wxString& rName
  94                   ,const wxString& rExt
  95                   ,long            lType
  96                  ) : wxGDIImageHandler( rName
  97                                        ,rExt
  98                                        ,lType
  99                                       )
 100     {
 101     }
 102
 103     // creating and saving icons is not supported
 104     virtual bool Create( wxGDIImage* WXUNUSED(pImage)
 105                         ,void*       WXUNUSED(pData)
 106                         ,long        WXUNUSED(lFlags)
 107                         ,int         WXUNUSED(nWidth)
 108                         ,int         WXUNUSED(nHeight)
 109                         ,int         WXUNUSED(nDepth) = 1
 110                        )
 111     {
 112         return(FALSE);
 113     }
 114
 115     virtual bool Save( wxGDIImage*     WXUNUSED(pImage)
 116                       ,const wxString& WXUNUSED(rName)
 117                       ,int             WXUNUSED(nType)
 118                      )
 119     {
 120         return(FALSE);
 121     }
 122     virtual bool Load( wxGDIImage*     pImage
 123                       ,const wxString& rName
 124                       ,HPS             hPs
 125                       ,long            lFlags
 126                       ,int             nDesiredWidth
 127                       ,int             nDesiredHeight
 128                      )
 129     {
 130         wxIcon*                     pIcon = wxDynamicCast(pImage, wxIcon);
 131         wxCHECK_MSG(pIcon, FALSE, _T("wxIconHandler only works with icons"));
 132
 133         return LoadIcon( pIcon
 134                         ,rName
 135                         ,hPs
 136                         ,lFlags
 137                         ,nDesiredWidth
 138                         ,nDesiredHeight
 139                        );
 140     }
 141
 142 protected:
 143     virtual bool LoadIcon( wxIcon*         pIcon
 144                           ,const wxString& rName
 145                           ,HPS             hPs
 146                           ,long            lFlags
 147                           ,int             nDesiredWidth = -1
 148                           ,int             nDesiredHeight = -1
 149                          ) = 0;
 150 };
 151
 152 class WXDLLEXPORT wxICOFileHandler : public wxIconHandler
 153 {
 154 public:
 155     wxICOFileHandler() : wxIconHandler(_T("ICO icon file"),
 156                                        _T("ico"),
 157                                        wxBITMAP_TYPE_ICO)
 158     {
 159     }
 160
 161     virtual bool LoadIcon( wxIcon *        pIcon
 162                           ,const wxString& rName
 163                           ,HPS             hPs
 164                           ,long            lFlags
 165                           ,int             nDesiredWidth = -1
 166                           ,int             nDesiredHeight = -1
 167                          );
 168
 169 private:
 170     DECLARE_DYNAMIC_CLASS(wxICOFileHandler)
 171 };
 172
 173 class WXDLLEXPORT wxICOResourceHandler: public wxIconHandler
 174 {
 175 public:
 176     wxICOResourceHandler() : wxIconHandler(_T("ICO resource"),
 177                                            _T("ico"),
 178                                            wxBITMAP_TYPE_ICO_RESOURCE)
 179     {
 180     }
 181
 182     virtual bool LoadIcon( wxIcon*         pIcon
 183                           ,const wxString& rName
 184                           ,HPS             hPs
 185                           ,long            lFlags
 186                           ,int             nDesiredWidth = -1
 187                           ,int             nDesiredHeight = -1
 188                          );
 189
 190 private:
 191     DECLARE_DYNAMIC_CLASS(wxICOResourceHandler)
 192 };
 193
 194 // ----------------------------------------------------------------------------
 195 // wxWin macros
 196 // ----------------------------------------------------------------------------
 197
 198 #if !USE_SHARED_LIBRARIES
 199     IMPLEMENT_DYNAMIC_CLASS(wxBMPFileHandler, wxBitmapHandler)
 200     IMPLEMENT_DYNAMIC_CLASS(wxBMPResourceHandler, wxBitmapHandler)
 201     IMPLEMENT_DYNAMIC_CLASS(wxICOFileHandler, wxGDIImageHandler)
 202     IMPLEMENT_DYNAMIC_CLASS(wxICOResourceHandler, wxGDIImageHandler)
 203 #endif
 204
 205 // ----------------------------------------------------------------------------
 206 // private functions
 207 // ----------------------------------------------------------------------------
 208
 209 static wxSize GetHiconSize(WXHICON hicon);
 210
 211 // ============================================================================
 212 // implementation
 213 // ============================================================================
 214
 215 wxList wxGDIImage::ms_handlers;
 216
 217 // ----------------------------------------------------------------------------
 218 // wxGDIImage functions forwarded to wxGDIImageRefData
 219 // ----------------------------------------------------------------------------
 220
 221 bool wxGDIImage::FreeResource(
 222   bool                              WXUNUSED(bForce)
 223 )
 224 {
 225     if ( !IsNull() )
 226     {
 227         GetGDIImageData()->Free();
 228         GetGDIImageData()->m_hHandle = 0;
 229     }
 230
 231     return(TRUE);
 232 }
 233
 234 WXHANDLE wxGDIImage::GetResourceHandle()
 235 {
 236     return GetHandle();
 237 }
 238
 239 // ----------------------------------------------------------------------------
 240 // wxGDIImage handler stuff
 241 // ----------------------------------------------------------------------------
 242
 243 void wxGDIImage::AddHandler(
 244   wxGDIImageHandler*                pHandler
 245 )
 246 {
 247     ms_handlers.Append(pHandler);
 248 }
 249
 250 void wxGDIImage::InsertHandler(
 251   wxGDIImageHandler*                pHandler
 252 )
 253 {
 254     ms_handlers.Insert(pHandler);
 255 }
 256
 257 bool wxGDIImage::RemoveHandler(
 258   const wxString&                   rName
 259 )
 260 {
 261     wxGDIImageHandler*              pHandler = FindHandler(rName);
 262
 263     if (pHandler)
 264     {
 265         ms_handlers.DeleteObject(pHandler);
 266         return(TRUE);
 267     }
 268     else
 269         return(FALSE);
 270 }
 271
 272 wxGDIImageHandler* wxGDIImage::FindHandler(
 273   const wxString&                   rName
 274 )
 275 {
 276     wxNode*                         pNode = ms_handlers.First();
 277
 278     while (pNode)
 279     {
 280         wxGDIImageHandler*          pHandler = (wxGDIImageHandler *)pNode->Data();
 281
 282         if (pHandler->GetName() == rName)
 283             return(pHandler);
 284         pNode = pNode->Next();
 285     }
 286     return(NULL);
 287 }
 288
 289 wxGDIImageHandler* wxGDIImage::FindHandler(
 290   const wxString&                   rExtension
 291 , long                              lType
 292 )
 293 {
 294     wxNode*                         pNode = ms_handlers.First();
 295
 296     while (pNode)
 297     {
 298         wxGDIImageHandler*          pHandler = (wxGDIImageHandler *)pNode->Data();
 299
 300         if ((pHandler->GetExtension() = rExtension) &&
 301             (lType == -1 || pHandler->GetType() == lType))
 302         {
 303             return(pHandler);
 304         }
 305         pNode = pNode->Next();
 306     }
 307     return(NULL);
 308 }
 309
 310 wxGDIImageHandler* wxGDIImage::FindHandler(
 311   long                              lType
 312 )
 313 {
 314     wxNode*                         pNode = ms_handlers.First();
 315
 316     while (pNode)
 317     {
 318         wxGDIImageHandler*          pHandler = (wxGDIImageHandler *)pNode->Data();
 319
 320         if (pHandler->GetType() == lType)
 321             return pHandler;
 322         pNode = pNode->Next();
 323     }
 324     return(NULL);
 325 }
 326
 327 void wxGDIImage::CleanUpHandlers()
 328 {
 329     wxNode*                         pNode = ms_handlers.First();
 330
 331     while (pNode)
 332     {
 333         wxGDIImageHandler*          pHandler = (wxGDIImageHandler *)pNode->Data();
 334         wxNode*                     pNext    = pNode->Next();
 335
 336         delete pHandler;
 337 #if (!(defined(__VISAGECPP__) && (__IBMCPP__ < 400 || __IBMC__ < 400 )))
 338         delete pNode;
 339 #endif
 340         pNode = pNext;
 341     }
 342 }
 343
 344 void wxGDIImage::InitStandardHandlers()
 345 {
 346     AddHandler(new wxBMPResourceHandler);
 347     AddHandler(new wxBMPFileHandler);
 348
 349 #if wxUSE_XPM_IN_OS2
 350     AddHandler(new wxXPMFileHandler);
 351     AddHandler(new wxXPMDataHandler);
 352 #endif
 353
 354     AddHandler(new wxICOResourceHandler);
 355     AddHandler(new wxICOFileHandler);
 356 }
 357
 358 // ----------------------------------------------------------------------------
 359 // wxBitmap handlers
 360 // ----------------------------------------------------------------------------
 361
 362 bool wxBMPResourceHandler::LoadFile(
 363   wxBitmap*                         pBitmap
 364 , const wxString&                   rName
 365 , HPS                               hPs
 366 , long                              lFlags
 367 , int                               nDesiredWidth
 368 , int                               nDesiredHeight
 369 )
 370 {
 371     // TODO: load a bitmap from a file
 372     /*
 373     rBitmap->SetHBITMAP((WXHBITMAP)::LoadBitmap(wxGetInstance(), rName));
 374
 375     wxBitmapRefData*                pData = bitmap->GetBitmapData();
 376
 377     if (pBitmap->Ok())
 378     {
 379         BITMAP                       bm;
 380
 381         if ( !::GetObject(GetHbitmapOf(*pBitmap), sizeof(BITMAP), (LPSTR) &bm) )
 382         {
 383             wxLogLastError("GetObject(HBITMAP)");
 384         }
 385
 386         data->m_width = bm.bmWidth;
 387         data->m_height = bm.bmHeight;
 388         data->m_depth = bm.bmBitsPixel;
 389     }
 390     else
 391     {
 392         // it's probably not found
 393         wxLogError(wxT("Can't load bitmap '%s' from resources! Check .rc file."),
 394                    name.c_str());
 395     }
 396
 397     return bitmap->Ok();
 398     */
 399     return(FALSE);
 400 }
 401
 402 bool wxBMPFileHandler::LoadFile(
 403   wxBitmap*                         pBitmap
 404 , const wxString&                   rName
 405 , HPS                               hPs
 406 , long                              WXUNUSED(lFlags)
 407 , int                               WXUNUSED(nDesiredWidth)
 408 , int                               WXUNUSED(nDesiredHeight)
 409 )
 410 {
 411 #if wxUSE_IMAGE_LOADING_IN_OS2
 412     wxPalette*                      pPalette = NULL;
 413
 414     bool                            bSuccess = FALSE; /* wxLoadIntoBitmap( WXSTRINGCAST rName
 415                                                                 ,pBitmap
 416                                                                 ,&pPalette
 417                                                                ) != 0; */
 418     if (bSuccess && pPalette)
 419     {
 420         pBitmap->SetPalette(*pPalette);
 421     }
 422
 423     // it was copied by the bitmap if it was loaded successfully
 424     delete pPalette;
 425
 426     return(bSuccess);
 427 #else
 428     return(FALSE);
 429 #endif
 430 }
 431
 432 bool wxBMPFileHandler::SaveFile(
 433   wxBitmap*                         pBitmap
 434 , const wxString&                   rName
 435 , int                               WXUNUSED(nType)
 436 , const wxPalette*                  pPal
 437 )
 438 {
 439 #if wxUSE_IMAGE_LOADING_IN_OS2
 440     wxPalette*                      pActualPalette = (wxPalette *)pPal;
 441
 442     if (!pActualPalette)
 443         pActualPalette = pBitmap->GetPalette();
 444     /* return(wxSaveBitmap( WXSTRINGCAST rName
 445                         ,pBitmap
 446                         ,pActualPalette
 447                        ) != 0); */
 448     return(FALSE);
 449 #else
 450     return(FALSE);
 451 #endif
 452 }
 453
 454 // ----------------------------------------------------------------------------
 455 // wxIcon handlers
 456 // ----------------------------------------------------------------------------
 457
 458 bool wxICOFileHandler::LoadIcon(
 459   wxIcon*                           pIcon
 460 , const wxString&                   rName
 461 , HPS                               hPs
 462 , long                              lFlags
 463 , int                               nDesiredWidth
 464 , int                               nDesiredHeight
 465 )
 466 {
 467 #if wxUSE_RESOURCE_LOADING_IN_OS2
 468     pIcon->UnRef();
 469
 470     // actual size
 471     wxSize                          vSize;
 472
 473     // TODO: load icon directly from a file
 474     /*
 475 #ifdef __WIN32__
 476     HICON hicon = ::ExtractIcon(wxGetInstance(), name, first);
 477     if ( !hicon )
 478     {
 479         wxLogSysError(_T("Failed to load icon from the file '%s'"),
 480                       name.c_str());
 481
 482         return FALSE;
 483     }
 484
 485     size = GetHiconSize(hicon);
 486 #else // Win16
 487     HICON hicon = ReadIconFile((wxChar *)name.c_str(),
 488                                wxGetInstance(),
 489                                &size.x, &size.y);
 490 #endif // Win32/Win16
 491
 492     if ( (desiredWidth != -1 && desiredWidth != size.x) ||
 493          (desiredHeight != -1 && desiredHeight != size.y) )
 494     {
 495         wxLogDebug(_T("Returning FALSE from wxICOFileHandler::Load because "
 496                       "of the size mismatch: actual (%d, %d), "
 497                       "requested (%d, %d)"),
 498                       size.x, size.y,
 499                       desiredWidth, desiredHeight);
 500
 501         ::DestroyIcon(hicon);
 502
 503         return FALSE;
 504     }
 505
 506     icon->SetHICON((WXHICON)hicon);
 507     icon->SetSize(size.x, size.y);
 508
 509     return icon->Ok();
 510     */
 511     return(FALSE);
 512 #else
 513     return(FALSE);
 514 #endif
 515 }
 516
 517 bool wxICOResourceHandler::LoadIcon(
 518   wxIcon*                           pIcon
 519 , const wxString&                   rName
 520 , HPS                               hPs
 521 , long                              lFlags
 522 , int                               WXUNUSED(nDesiredWidth)
 523 , int                               WXUNUSED(nDesiredHeight)
 524 )
 525 {
 526     HPOINTER                        hIcon;
 527
 528     hIcon = ::WinLoadFileIcon( (PSZ)rName.c_str()
 529                               ,TRUE // load for private use
 530                              );
 531
 532     pIcon->SetSize(32, 32); // all OS/2 icons are 32 x 32
 533
 534
 535     pIcon->SetHICON((WXHICON)hIcon);
 536
 537     return pIcon->Ok();
 538 } // end of wxICOResourceHandler::LoadIcon
 539
 540 // ----------------------------------------------------------------------------
 541 // private functions
 542 // ----------------------------------------------------------------------------
 543
 544 static wxSize GetHiconSize(
 545   WXHICON                           hicon
 546 )
 547 {
 548     wxSize                          vSize(32, 32);    // default
 549
 550     // all OS/2 icons are 32x32
 551     return(vSize);
 552 }
 553