src/msw/bitmap.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        bitmap.cpp
   3 // Purpose:     wxBitmap
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "bitmap.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include <stdio.h>
  33
  34     #include "wx/list.h"
  35     #include "wx/utils.h"
  36     #include "wx/app.h"
  37     #include "wx/palette.h"
  38     #include "wx/dcmemory.h"
  39     #include "wx/bitmap.h"
  40     #include "wx/icon.h"
  41 #endif
  42
  43 #include "wx/msw/private.h"
  44 #include "wx/log.h"
  45
  46 #include "wx/msw/dib.h"
  47
  48 // ----------------------------------------------------------------------------
  49 // macros
  50 // ----------------------------------------------------------------------------
  51
  52 #if !USE_SHARED_LIBRARIES
  53     IMPLEMENT_DYNAMIC_CLASS(wxBitmap, wxGDIObject)
  54     IMPLEMENT_DYNAMIC_CLASS(wxMask, wxObject)
  55 #endif
  56
  57 // ============================================================================
  58 // implementation
  59 // ============================================================================
  60
  61 // ----------------------------------------------------------------------------
  62 // wxBitmapRefData
  63 // ----------------------------------------------------------------------------
  64
  65 wxBitmapRefData::wxBitmapRefData()
  66 {
  67   m_ok = FALSE;
  68   m_width = 0;
  69   m_height = 0;
  70   m_depth = 0;
  71   m_quality = 0;
  72   m_hBitmap = 0 ;
  73   m_selectedInto = NULL;
  74   m_numColors = 0;
  75   m_bitmapMask = NULL;
  76 }
  77
  78 wxBitmapRefData::~wxBitmapRefData()
  79 {
  80   if (m_selectedInto)
  81   {
  82     wxChar buf[200];
  83     wxSprintf(buf, wxT("Bitmap was deleted without selecting out of wxMemoryDC %lX."), (unsigned long) m_selectedInto);
  84     wxFatalError(buf);
  85   }
  86   if (m_hBitmap)
  87   {
  88     DeleteObject((HBITMAP) m_hBitmap);
  89   }
  90   m_hBitmap = 0 ;
  91
  92   if (m_bitmapMask)
  93     delete m_bitmapMask;
  94   m_bitmapMask = NULL;
  95
  96 }
  97
  98 // ----------------------------------------------------------------------------
  99 // wxBitmap
 100 // ----------------------------------------------------------------------------
 101
 102 wxList wxBitmap::sm_handlers;
 103
 104 wxBitmap::wxBitmap()
 105 {
 106   if ( wxTheBitmapList )
 107     wxTheBitmapList->AddBitmap(this);
 108 }
 109
 110 wxBitmap::wxBitmap(const wxBitmap& bitmap)
 111 {
 112     wxIcon *icon = wxDynamicCast(&bitmap, wxIcon);
 113     if ( icon )
 114     {
 115         HDC hdc = ::CreateCompatibleDC(NULL);   // screen DC
 116         HBITMAP hbitmap = ::CreateCompatibleBitmap(hdc,
 117                                                    icon->GetWidth(),
 118                                                    icon->GetHeight());
 119         ::SelectObject(hdc, hbitmap);
 120         ::DrawIcon(hdc, 0, 0, (HICON)icon->GetHICON());
 121
 122         ::DeleteDC(hdc);
 123
 124         SetHBITMAP((WXHBITMAP)hbitmap);
 125     }
 126     else
 127     {
 128         Ref(bitmap);
 129     }
 130
 131     if ( wxTheBitmapList )
 132         wxTheBitmapList->AddBitmap(this);
 133 }
 134
 135 wxBitmap::~wxBitmap()
 136 {
 137     if (wxTheBitmapList)
 138         wxTheBitmapList->DeleteObject(this);
 139 }
 140
 141 bool wxBitmap::FreeResource(bool WXUNUSED(force))
 142 {
 143   if ( !M_BITMAPDATA )
 144   return FALSE;
 145
 146   if (M_BITMAPDATA->m_selectedInto)
 147   {
 148     wxChar buf[200];
 149     wxSprintf(buf, wxT("Bitmap %lX was deleted without selecting out of wxMemoryDC %lX."), (unsigned long) this, (unsigned long) M_BITMAPDATA->m_selectedInto);
 150     wxFatalError(buf);
 151   }
 152   if (M_BITMAPDATA->m_hBitmap)
 153   {
 154     DeleteObject((HBITMAP) M_BITMAPDATA->m_hBitmap);
 155   }
 156   M_BITMAPDATA->m_hBitmap = 0 ;
 157
 158 /*
 159   if (M_BITMAPDATA->m_bitmapPalette)
 160     delete M_BITMAPDATA->m_bitmapPalette;
 161
 162   M_BITMAPDATA->m_bitmapPalette = NULL ;
 163 */
 164
 165   return TRUE;
 166 }
 167
 168
 169 wxBitmap::wxBitmap(const char bits[], int the_width, int the_height, int no_bits)
 170 {
 171   m_refData = new wxBitmapRefData;
 172
 173   M_BITMAPDATA->m_width = the_width ;
 174   M_BITMAPDATA->m_height = the_height ;
 175   M_BITMAPDATA->m_depth = no_bits ;
 176   M_BITMAPDATA->m_numColors = 0;
 177
 178   M_BITMAPDATA->m_hBitmap = (WXHBITMAP) CreateBitmap(the_width, the_height, 1, no_bits, bits);
 179
 180   if (M_BITMAPDATA->m_hBitmap)
 181     M_BITMAPDATA->m_ok = TRUE;
 182   else
 183     M_BITMAPDATA->m_ok = FALSE;
 184
 185   M_BITMAPDATA->m_selectedInto = NULL;
 186
 187   if ( wxTheBitmapList )
 188     wxTheBitmapList->AddBitmap(this);
 189 }
 190
 191 // Create from XPM data
 192 wxBitmap::wxBitmap(char **data, wxControl *WXUNUSED(anItem))
 193 {
 194   (void) Create((void *)data, wxBITMAP_TYPE_XPM_DATA, 0, 0, 0);
 195 }
 196
 197 wxBitmap::wxBitmap(int w, int h, int d)
 198 {
 199   (void)Create(w, h, d);
 200
 201   if ( wxTheBitmapList )
 202     wxTheBitmapList->AddBitmap(this);
 203 }
 204
 205 wxBitmap::wxBitmap(void *data, long type, int width, int height, int depth)
 206 {
 207   (void) Create(data, type, width, height, depth);
 208
 209   if ( wxTheBitmapList )
 210     wxTheBitmapList->AddBitmap(this);
 211 }
 212
 213 wxBitmap::wxBitmap(const wxString& filename, long type)
 214 {
 215   LoadFile(filename, (int)type);
 216
 217   if ( wxTheBitmapList )
 218     wxTheBitmapList->AddBitmap(this);
 219 }
 220
 221 bool wxBitmap::Create(int w, int h, int d)
 222 {
 223   UnRef();
 224
 225   m_refData = new wxBitmapRefData;
 226
 227   M_BITMAPDATA->m_width = w;
 228   M_BITMAPDATA->m_height = h;
 229   M_BITMAPDATA->m_depth = d;
 230
 231   if (d > 0)
 232   {
 233     M_BITMAPDATA->m_hBitmap = (WXHBITMAP) CreateBitmap(w, h, 1, d, NULL);
 234   }
 235   else
 236   {
 237     HDC dc = GetDC((HWND) NULL);
 238     M_BITMAPDATA->m_hBitmap = (WXHBITMAP) CreateCompatibleBitmap(dc, w, h);
 239     ReleaseDC((HWND) NULL, dc);
 240     M_BITMAPDATA->m_depth = wxDisplayDepth();
 241   }
 242   if (M_BITMAPDATA->m_hBitmap)
 243     M_BITMAPDATA->m_ok = TRUE;
 244   else
 245     M_BITMAPDATA->m_ok = FALSE;
 246   return M_BITMAPDATA->m_ok;
 247 }
 248
 249 bool wxBitmap::LoadFile(const wxString& filename, long type)
 250 {
 251   UnRef();
 252
 253   m_refData = new wxBitmapRefData;
 254
 255   wxBitmapHandler *handler = FindHandler(type);
 256
 257   if ( handler == NULL ) {
 258     wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
 259
 260     return FALSE;
 261   }
 262
 263   return handler->LoadFile(this, filename, type, -1, -1);
 264 }
 265
 266 bool wxBitmap::Create(void *data, long type, int width, int height, int depth)
 267 {
 268   UnRef();
 269
 270   m_refData = new wxBitmapRefData;
 271
 272   wxBitmapHandler *handler = FindHandler(type);
 273
 274   if ( handler == NULL ) {
 275     wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
 276
 277     return FALSE;
 278   }
 279
 280   return handler->Create(this, data, type, width, height, depth);
 281 }
 282
 283 bool wxBitmap::SaveFile(const wxString& filename, int type, const wxPalette *palette)
 284 {
 285   wxBitmapHandler *handler = FindHandler(type);
 286
 287   if ( handler == NULL ) {
 288     wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
 289
 290     return FALSE;
 291   }
 292
 293   return handler->SaveFile(this, filename, type, palette);
 294 }
 295
 296 void wxBitmap::SetWidth(int w)
 297 {
 298   if (!M_BITMAPDATA)
 299   m_refData = new wxBitmapRefData;
 300
 301   M_BITMAPDATA->m_width = w;
 302 }
 303
 304 void wxBitmap::SetHeight(int h)
 305 {
 306   if (!M_BITMAPDATA)
 307   m_refData = new wxBitmapRefData;
 308
 309   M_BITMAPDATA->m_height = h;
 310 }
 311
 312 void wxBitmap::SetDepth(int d)
 313 {
 314   if (!M_BITMAPDATA)
 315   m_refData = new wxBitmapRefData;
 316
 317   M_BITMAPDATA->m_depth = d;
 318 }
 319
 320 void wxBitmap::SetQuality(int q)
 321 {
 322   if (!M_BITMAPDATA)
 323   m_refData = new wxBitmapRefData;
 324
 325   M_BITMAPDATA->m_quality = q;
 326 }
 327
 328 void wxBitmap::SetOk(bool isOk)
 329 {
 330   if (!M_BITMAPDATA)
 331   m_refData = new wxBitmapRefData;
 332
 333   M_BITMAPDATA->m_ok = isOk;
 334 }
 335
 336 void wxBitmap::SetPalette(const wxPalette& palette)
 337 {
 338   if (!M_BITMAPDATA)
 339   m_refData = new wxBitmapRefData;
 340
 341   M_BITMAPDATA->m_bitmapPalette = palette ;
 342 }
 343
 344 void wxBitmap::SetMask(wxMask *mask)
 345 {
 346   if (!M_BITMAPDATA)
 347   m_refData = new wxBitmapRefData;
 348
 349   M_BITMAPDATA->m_bitmapMask = mask ;
 350 }
 351
 352 void wxBitmap::SetHBITMAP(WXHBITMAP bmp)
 353 {
 354   if (!M_BITMAPDATA)
 355     m_refData = new wxBitmapRefData;
 356
 357   M_BITMAPDATA->m_hBitmap = bmp;
 358   M_BITMAPDATA->m_ok = bmp != 0;
 359 }
 360
 361 void wxBitmap::AddHandler(wxBitmapHandler *handler)
 362 {
 363   sm_handlers.Append(handler);
 364 }
 365
 366 void wxBitmap::InsertHandler(wxBitmapHandler *handler)
 367 {
 368   sm_handlers.Insert(handler);
 369 }
 370
 371 bool wxBitmap::RemoveHandler(const wxString& name)
 372 {
 373   wxBitmapHandler *handler = FindHandler(name);
 374   if ( handler )
 375   {
 376     sm_handlers.DeleteObject(handler);
 377     return TRUE;
 378   }
 379   else
 380     return FALSE;
 381 }
 382
 383 wxBitmapHandler *wxBitmap::FindHandler(const wxString& name)
 384 {
 385   wxNode *node = sm_handlers.First();
 386   while ( node )
 387   {
 388     wxBitmapHandler *handler = (wxBitmapHandler *)node->Data();
 389     if ( (handler->GetName().Cmp(name) == 0) )
 390       return handler;
 391     node = node->Next();
 392   }
 393   return NULL;
 394 }
 395
 396 wxBitmapHandler *wxBitmap::FindHandler(const wxString& extension, long bitmapType)
 397 {
 398   wxNode *node = sm_handlers.First();
 399   while ( node )
 400   {
 401     wxBitmapHandler *handler = (wxBitmapHandler *)node->Data();
 402     if ( (handler->GetExtension().Cmp(extension) == 0) &&
 403           (bitmapType == -1 || (handler->GetType() == bitmapType)) )
 404       return handler;
 405     node = node->Next();
 406   }
 407   return NULL;
 408 }
 409
 410 wxBitmapHandler *wxBitmap::FindHandler(long bitmapType)
 411 {
 412   wxNode *node = sm_handlers.First();
 413   while ( node )
 414   {
 415     wxBitmapHandler *handler = (wxBitmapHandler *)node->Data();
 416     if (handler->GetType() == bitmapType)
 417       return handler;
 418     node = node->Next();
 419   }
 420   return NULL;
 421 }
 422
 423 // New Create/FreeDIB functions since ones in dibutils.cpp are confusing
 424 static long createDIB(long xSize, long ySize, long bitsPerPixel,
 425                        HPALETTE hPal, LPBITMAPINFO* lpDIBHeader);
 426 static long freeDIB(LPBITMAPINFO lpDIBHeader);
 427
 428 // Creates a bitmap that matches the device context, from
 429 // an arbitray bitmap. At present, the original bitmap must have an
 430 // associated palette. TODO: use a default palette if no palette exists.
 431 // Contributed by Frederic Villeneuve <frederic.villeneuve@natinst.com>
 432 wxBitmap wxBitmap::GetBitmapForDC(wxDC& dc) const
 433 {
 434     wxMemoryDC      memDC;
 435     wxBitmap        tmpBitmap(this->GetWidth(), this->GetHeight(), dc.GetDepth());
 436     HPALETTE        hPal = (HPALETTE) NULL;
 437     LPBITMAPINFO    lpDib;
 438     void            *lpBits = (void*) NULL;
 439
 440 /*
 441     wxASSERT( this->GetPalette() && this->GetPalette()->Ok() && (this->GetPalette()->GetHPALETTE() != 0) );
 442
 443     tmpBitmap.SetPalette(this->GetPalette());
 444     memDC.SelectObject(tmpBitmap);
 445     memDC.SetPalette(this->GetPalette());
 446
 447     hPal = (HPALETTE) this->GetPalette()->GetHPALETTE();
 448 */
 449     if( this->GetPalette() && this->GetPalette()->Ok() && (this->GetPalette()->GetHPALETTE() != 0) )
 450     {
 451         tmpBitmap.SetPalette(* this->GetPalette());
 452         memDC.SelectObject(tmpBitmap);
 453         memDC.SetPalette(* this->GetPalette());
 454         hPal = (HPALETTE) this->GetPalette()->GetHPALETTE();
 455     }
 456     else
 457     {
 458         hPal = (HPALETTE) ::GetStockObject(DEFAULT_PALETTE);
 459         wxPalette palette;
 460         palette.SetHPALETTE( (WXHPALETTE)hPal );
 461         tmpBitmap.SetPalette( palette );
 462         memDC.SelectObject(tmpBitmap);
 463         memDC.SetPalette( palette );
 464     }
 465
 466     // set the height negative because in a DIB the order of the lines is reversed
 467     createDIB(this->GetWidth(), -this->GetHeight(), this->GetDepth(), hPal, &lpDib);
 468
 469     lpBits = malloc(lpDib->bmiHeader.biSizeImage);
 470
 471     ::GetBitmapBits((HBITMAP)GetHBITMAP(), lpDib->bmiHeader.biSizeImage, lpBits);
 472
 473     ::SetDIBitsToDevice((HDC) memDC.GetHDC(), 0, 0, this->GetWidth(), this->GetHeight(),
 474                         0, 0, 0, this->GetHeight(), lpBits, lpDib, DIB_RGB_COLORS);
 475
 476     free(lpBits);
 477
 478     freeDIB(lpDib);
 479     return (tmpBitmap);
 480 }
 481
 482 /*
 483  * wxMask
 484  */
 485
 486 wxMask::wxMask()
 487 {
 488     m_maskBitmap = 0;
 489 }
 490
 491 // Construct a mask from a bitmap and a colour indicating
 492 // the transparent area
 493 wxMask::wxMask(const wxBitmap& bitmap, const wxColour& colour)
 494 {
 495     m_maskBitmap = 0;
 496   Create(bitmap, colour);
 497 }
 498
 499 // Construct a mask from a bitmap and a palette index indicating
 500 // the transparent area
 501 wxMask::wxMask(const wxBitmap& bitmap, int paletteIndex)
 502 {
 503     m_maskBitmap = 0;
 504   Create(bitmap, paletteIndex);
 505 }
 506
 507 // Construct a mask from a mono bitmap (copies the bitmap).
 508 wxMask::wxMask(const wxBitmap& bitmap)
 509 {
 510     m_maskBitmap = 0;
 511   Create(bitmap);
 512 }
 513
 514 wxMask::~wxMask()
 515 {
 516     if ( m_maskBitmap )
 517         ::DeleteObject((HBITMAP) m_maskBitmap);
 518 }
 519
 520 // Create a mask from a mono bitmap (copies the bitmap).
 521 bool wxMask::Create(const wxBitmap& bitmap)
 522 {
 523     if ( m_maskBitmap )
 524   {
 525     ::DeleteObject((HBITMAP) m_maskBitmap);
 526     m_maskBitmap = 0;
 527   }
 528   if (!bitmap.Ok() || bitmap.GetDepth() != 1)
 529   {
 530     return FALSE;
 531   }
 532   m_maskBitmap = (WXHBITMAP) CreateBitmap(
 533           bitmap.GetWidth(),
 534           bitmap.GetHeight(),
 535           1, 1, 0
 536           );
 537   HDC srcDC = CreateCompatibleDC(0);
 538   SelectObject(srcDC, (HBITMAP) bitmap.GetHBITMAP());
 539   HDC destDC = CreateCompatibleDC(0);
 540   SelectObject(destDC, (HBITMAP) m_maskBitmap);
 541   BitBlt(destDC, 0, 0, bitmap.GetWidth(), bitmap.GetHeight(), srcDC, 0, 0, SRCCOPY);
 542   SelectObject(srcDC, 0);
 543   DeleteDC(srcDC);
 544   SelectObject(destDC, 0);
 545   DeleteDC(destDC);
 546   return TRUE;
 547 }
 548
 549 // Create a mask from a bitmap and a palette index indicating
 550 // the transparent area
 551 bool wxMask::Create(const wxBitmap& bitmap, int paletteIndex)
 552 {
 553     if ( m_maskBitmap )
 554   {
 555     ::DeleteObject((HBITMAP) m_maskBitmap);
 556     m_maskBitmap = 0;
 557   }
 558   if (bitmap.Ok() && bitmap.GetPalette()->Ok())
 559   {
 560     unsigned char red, green, blue;
 561     if (bitmap.GetPalette()->GetRGB(paletteIndex, &red, &green, &blue))
 562     {
 563       wxColour transparentColour(red, green, blue);
 564       return Create(bitmap, transparentColour);
 565     }
 566   }
 567   return FALSE;
 568 }
 569
 570 // Create a mask from a bitmap and a colour indicating
 571 // the transparent area
 572 bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour)
 573 {
 574     if ( m_maskBitmap )
 575   {
 576     ::DeleteObject((HBITMAP) m_maskBitmap);
 577     m_maskBitmap = 0;
 578   }
 579   if (!bitmap.Ok())
 580   {
 581     return FALSE;
 582   }
 583
 584   // scan the bitmap for the transparent colour and set
 585   // the corresponding pixels in the mask to BLACK and
 586   // the rest to WHITE
 587   COLORREF maskColour = RGB(colour.Red(), colour.Green(), colour.Blue());
 588   m_maskBitmap = (WXHBITMAP) ::CreateBitmap(
 589           bitmap.GetWidth(),
 590           bitmap.GetHeight(),
 591           1, 1, 0
 592           );
 593   HDC srcDC = ::CreateCompatibleDC(0);
 594   ::SelectObject(srcDC, (HBITMAP) bitmap.GetHBITMAP());
 595   HDC destDC = ::CreateCompatibleDC(0);
 596   ::SelectObject(destDC, (HBITMAP) m_maskBitmap);
 597
 598   // this is not very efficient, but I can't think
 599   // of a better way of doing it
 600   for (int w = 0; w < bitmap.GetWidth(); w++)
 601   {
 602     for (int h = 0; h < bitmap.GetHeight(); h++)
 603     {
 604       COLORREF col = GetPixel(srcDC, w, h);
 605       if (col == maskColour)
 606       {
 607         ::SetPixel(destDC, w, h, RGB(0, 0, 0));
 608       }
 609       else
 610       {
 611         ::SetPixel(destDC, w, h, RGB(255, 255, 255));
 612       }
 613     }
 614   }
 615   ::SelectObject(srcDC, 0);
 616   ::DeleteDC(srcDC);
 617   ::SelectObject(destDC, 0);
 618   ::DeleteDC(destDC);
 619   return TRUE;
 620 }
 621
 622 /*
 623  * wxBitmapHandler
 624  */
 625
 626 IMPLEMENT_DYNAMIC_CLASS(wxBitmapHandler, wxObject)
 627
 628 bool wxBitmapHandler::Create(wxBitmap *WXUNUSED(bitmap), void *WXUNUSED(data), long WXUNUSED(type), int WXUNUSED(width), int WXUNUSED(height), int WXUNUSED(depth))
 629 {
 630   return FALSE;
 631 }
 632
 633 bool wxBitmapHandler::LoadFile(wxBitmap *WXUNUSED(bitmap), const wxString& WXUNUSED(name), long WXUNUSED(type),
 634     int WXUNUSED(desiredWidth), int WXUNUSED(desiredHeight))
 635 {
 636   return FALSE;
 637 }
 638
 639 bool wxBitmapHandler::SaveFile(wxBitmap *WXUNUSED(bitmap), const wxString& WXUNUSED(name), int WXUNUSED(type), const wxPalette *WXUNUSED(palette))
 640 {
 641   return FALSE;
 642 }
 643
 644 /*
 645  * Standard handlers
 646  */
 647
 648 class WXDLLEXPORT wxBMPResourceHandler: public wxBitmapHandler
 649 {
 650   DECLARE_DYNAMIC_CLASS(wxBMPResourceHandler)
 651 public:
 652   inline wxBMPResourceHandler()
 653   {
 654   m_name = "Windows bitmap resource";
 655   m_extension = "";
 656   m_type = wxBITMAP_TYPE_BMP_RESOURCE;
 657   };
 658
 659   virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
 660       int desiredWidth, int desiredHeight);
 661 };
 662 IMPLEMENT_DYNAMIC_CLASS(wxBMPResourceHandler, wxBitmapHandler)
 663
 664 bool wxBMPResourceHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long WXUNUSED(flags),
 665     int WXUNUSED(desiredWidth), int WXUNUSED(desiredHeight))
 666 {
 667     // TODO: load colourmap.
 668     M_BITMAPHANDLERDATA->m_hBitmap = (WXHBITMAP) ::LoadBitmap(wxGetInstance(), name);
 669     if (M_BITMAPHANDLERDATA->m_hBitmap)
 670     {
 671         M_BITMAPHANDLERDATA->m_ok = TRUE;
 672         BITMAP bm;
 673         GetObject((HBITMAP) M_BITMAPHANDLERDATA->m_hBitmap, sizeof(BITMAP), (LPSTR) &bm);
 674         M_BITMAPHANDLERDATA->m_width = bm.bmWidth;
 675         M_BITMAPHANDLERDATA->m_height = bm.bmHeight;
 676         M_BITMAPHANDLERDATA->m_depth = bm.bmBitsPixel;
 677
 678         if ( bitmap->IsKindOf(CLASSINFO(wxIcon)) )
 679         {
 680         }
 681
 682         return TRUE;
 683     }
 684
 685   // it's probably not found
 686   wxLogError(wxT("Can't load bitmap '%s' from resources! Check .rc file."), name.c_str());
 687
 688   return FALSE;
 689 }
 690
 691 class WXDLLEXPORT wxBMPFileHandler: public wxBitmapHandler
 692 {
 693   DECLARE_DYNAMIC_CLASS(wxBMPFileHandler)
 694 public:
 695   inline wxBMPFileHandler()
 696   {
 697   m_name = "Windows bitmap file";
 698   m_extension = "bmp";
 699   m_type = wxBITMAP_TYPE_BMP;
 700   };
 701
 702   virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
 703       int desiredWidth, int desiredHeight);
 704   virtual bool SaveFile(wxBitmap *bitmap, const wxString& name, int type, const wxPalette *palette = NULL);
 705 };
 706 IMPLEMENT_DYNAMIC_CLASS(wxBMPFileHandler, wxBitmapHandler)
 707
 708 bool wxBMPFileHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long WXUNUSED(flags),
 709     int WXUNUSED(desiredWidth), int WXUNUSED(desiredHeight))
 710 {
 711 #if wxUSE_IMAGE_LOADING_IN_MSW
 712     wxPalette *palette = NULL;
 713     bool success = FALSE;
 714 /*
 715     if (type & wxBITMAP_DISCARD_COLOURMAP)
 716       success = wxLoadIntoBitmap(WXSTRINGCAST name, bitmap);
 717     else
 718 */
 719     success = (wxLoadIntoBitmap(WXSTRINGCAST name, bitmap, &palette) != 0);
 720     if (!success && palette)
 721     {
 722       delete palette;
 723       palette = NULL;
 724     }
 725     if (palette)
 726     {
 727         M_BITMAPHANDLERDATA->m_bitmapPalette = *palette;
 728         delete palette;
 729     }
 730     return success;
 731 #else
 732   return FALSE;
 733 #endif
 734 }
 735
 736 bool wxBMPFileHandler::SaveFile(wxBitmap *bitmap, const wxString& name, int WXUNUSED(type), const wxPalette *pal)
 737 {
 738 #if wxUSE_IMAGE_LOADING_IN_MSW
 739     wxPalette *actualPalette = (wxPalette *)pal;
 740     if (!actualPalette && (!M_BITMAPHANDLERDATA->m_bitmapPalette.IsNull()))
 741       actualPalette = & (M_BITMAPHANDLERDATA->m_bitmapPalette);
 742     return (wxSaveBitmap(WXSTRINGCAST name, bitmap, actualPalette) != 0);
 743 #else
 744   return FALSE;
 745 #endif
 746 }
 747
 748 void wxBitmap::CleanUpHandlers()
 749 {
 750   wxNode *node = sm_handlers.First();
 751   while ( node )
 752   {
 753     wxBitmapHandler *handler = (wxBitmapHandler *)node->Data();
 754     wxNode *next = node->Next();
 755     delete handler;
 756     delete node;
 757     node = next;
 758   }
 759 }
 760
 761 void wxBitmap::InitStandardHandlers()
 762 {
 763   AddHandler(new wxBMPResourceHandler);
 764   AddHandler(new wxBMPFileHandler);
 765
 766   // Not added by default: include xpmhand.h in your app
 767   // and call these in your wxApp::OnInit.
 768 //  AddHandler(new wxXPMFileHandler);
 769 //  AddHandler(new wxXPMDataHandler);
 770
 771   AddHandler(new wxICOResourceHandler);
 772   AddHandler(new wxICOFileHandler);
 773 }
 774
 775 static long createDIB(long xSize, long ySize, long bitsPerPixel,
 776                        HPALETTE hPal, LPBITMAPINFO* lpDIBHeader)
 777 {
 778    unsigned long   i, headerSize;
 779    LPBITMAPINFO    lpDIBheader = NULL;
 780    LPPALETTEENTRY  lpPe = NULL;
 781
 782
 783    // Allocate space for a DIB header
 784    headerSize = (sizeof(BITMAPINFOHEADER) + (256 * sizeof(PALETTEENTRY)));
 785    lpDIBheader = (BITMAPINFO *) malloc(headerSize);
 786    lpPe = (PALETTEENTRY *)((BYTE*)lpDIBheader + sizeof(BITMAPINFOHEADER));
 787
 788    GetPaletteEntries(hPal, 0, 256, lpPe);
 789
 790
 791    memset(lpDIBheader, 0x00, sizeof(BITMAPINFOHEADER));
 792
 793
 794    // Fill in the static parts of the DIB header
 795    lpDIBheader->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
 796    lpDIBheader->bmiHeader.biWidth = xSize;
 797    lpDIBheader->bmiHeader.biHeight = ySize;
 798    lpDIBheader->bmiHeader.biPlanes = 1;
 799
 800    // this value must be 1, 4, 8 or 24 so PixelDepth can only be
 801    lpDIBheader->bmiHeader.biBitCount = (WORD)(bitsPerPixel);
 802    lpDIBheader->bmiHeader.biCompression = BI_RGB;
 803    lpDIBheader->bmiHeader.biSizeImage = xSize * abs(ySize) * bitsPerPixel >>
 804 3;
 805    lpDIBheader->bmiHeader.biClrUsed = 256;
 806
 807
 808    // Initialize the DIB palette
 809    for (i = 0; i < 256; i++) {
 810       lpDIBheader->bmiColors[i].rgbReserved = lpPe[i].peFlags;
 811       lpDIBheader->bmiColors[i].rgbRed = lpPe[i].peRed;
 812       lpDIBheader->bmiColors[i].rgbGreen = lpPe[i].peGreen;
 813       lpDIBheader->bmiColors[i].rgbBlue = lpPe[i].peBlue;
 814    }
 815
 816    *lpDIBHeader = lpDIBheader;
 817
 818
 819    return (0);
 820
 821 }
 822
 823
 824
 825 static long freeDIB(LPBITMAPINFO lpDIBHeader)
 826 {
 827
 828    if (lpDIBHeader != NULL) {
 829       free(lpDIBHeader);
 830    }
 831
 832    return (0);
 833 }
 834
 835