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, _T("Bitmap was deleted without selecting out of wxMemoryDC %X."), (unsigned int) 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, _T("Bitmap %X was deleted without selecting out of wxMemoryDC %X."), (unsigned int) this, (unsigned int) 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(_T("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(_T("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(_T("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 }
 359
 360 void wxBitmap::AddHandler(wxBitmapHandler *handler)
 361 {
 362   sm_handlers.Append(handler);
 363 }
 364
 365 void wxBitmap::InsertHandler(wxBitmapHandler *handler)
 366 {
 367   sm_handlers.Insert(handler);
 368 }
 369
 370 bool wxBitmap::RemoveHandler(const wxString& name)
 371 {
 372   wxBitmapHandler *handler = FindHandler(name);
 373   if ( handler )
 374   {
 375     sm_handlers.DeleteObject(handler);
 376     return TRUE;
 377   }
 378   else
 379     return FALSE;
 380 }
 381
 382 wxBitmapHandler *wxBitmap::FindHandler(const wxString& name)
 383 {
 384   wxNode *node = sm_handlers.First();
 385   while ( node )
 386   {
 387     wxBitmapHandler *handler = (wxBitmapHandler *)node->Data();
 388     if ( (handler->GetName().Cmp(name) == 0) )
 389       return handler;
 390     node = node->Next();
 391   }
 392   return NULL;
 393 }
 394
 395 wxBitmapHandler *wxBitmap::FindHandler(const wxString& extension, long bitmapType)
 396 {
 397   wxNode *node = sm_handlers.First();
 398   while ( node )
 399   {
 400     wxBitmapHandler *handler = (wxBitmapHandler *)node->Data();
 401     if ( (handler->GetExtension().Cmp(extension) == 0) &&
 402           (bitmapType == -1 || (handler->GetType() == bitmapType)) )
 403       return handler;
 404     node = node->Next();
 405   }
 406   return NULL;
 407 }
 408
 409 wxBitmapHandler *wxBitmap::FindHandler(long bitmapType)
 410 {
 411   wxNode *node = sm_handlers.First();
 412   while ( node )
 413   {
 414     wxBitmapHandler *handler = (wxBitmapHandler *)node->Data();
 415     if (handler->GetType() == bitmapType)
 416       return handler;
 417     node = node->Next();
 418   }
 419   return NULL;
 420 }
 421
 422 // New Create/FreeDIB functions since ones in dibutils.cpp are confusing
 423 static long createDIB(long xSize, long ySize, long bitsPerPixel,
 424                        HPALETTE hPal, LPBITMAPINFO* lpDIBHeader);
 425 static long freeDIB(LPBITMAPINFO lpDIBHeader);
 426
 427 // Creates a bitmap that matches the device context, from
 428 // an arbitray bitmap. At present, the original bitmap must have an
 429 // associated palette. TODO: use a default palette if no palette exists.
 430 // Contributed by Frederic Villeneuve <frederic.villeneuve@natinst.com>
 431 wxBitmap wxBitmap::GetBitmapForDC(wxDC& dc) const
 432 {
 433     wxMemoryDC      memDC;
 434     wxBitmap        tmpBitmap(this->GetWidth(), this->GetHeight(), dc.GetDepth());
 435     HPALETTE        hPal = (HPALETTE) NULL;
 436     LPBITMAPINFO    lpDib;
 437     void            *lpBits = (void*) NULL;
 438
 439 /*
 440     wxASSERT( this->GetPalette() && this->GetPalette()->Ok() && (this->GetPalette()->GetHPALETTE() != 0) );
 441
 442     tmpBitmap.SetPalette(this->GetPalette());
 443     memDC.SelectObject(tmpBitmap);
 444     memDC.SetPalette(this->GetPalette());
 445
 446     hPal = (HPALETTE) this->GetPalette()->GetHPALETTE();
 447 */
 448     if( this->GetPalette() && this->GetPalette()->Ok() && (this->GetPalette()->GetHPALETTE() != 0) )
 449     {
 450         tmpBitmap.SetPalette(* this->GetPalette());
 451         memDC.SelectObject(tmpBitmap);
 452         memDC.SetPalette(* this->GetPalette());
 453         hPal = (HPALETTE) this->GetPalette()->GetHPALETTE();
 454     }
 455     else
 456     {
 457         hPal = (HPALETTE) ::GetStockObject(DEFAULT_PALETTE);
 458         wxPalette palette;
 459         palette.SetHPALETTE( (WXHPALETTE)hPal );
 460         tmpBitmap.SetPalette( palette );
 461         memDC.SelectObject(tmpBitmap);
 462         memDC.SetPalette( palette );
 463     }
 464
 465     // set the height negative because in a DIB the order of the lines is reversed
 466     createDIB(this->GetWidth(), -this->GetHeight(), this->GetDepth(), hPal, &lpDib);
 467
 468     lpBits = malloc(lpDib->bmiHeader.biSizeImage);
 469
 470     ::GetBitmapBits((HBITMAP)GetHBITMAP(), lpDib->bmiHeader.biSizeImage, lpBits);
 471
 472     ::SetDIBitsToDevice((HDC) memDC.GetHDC(), 0, 0, this->GetWidth(), this->GetHeight(),
 473                         0, 0, 0, this->GetHeight(), lpBits, lpDib, DIB_RGB_COLORS);
 474
 475     free(lpBits);
 476
 477     freeDIB(lpDib);
 478     return (tmpBitmap);
 479 }
 480
 481 /*
 482  * wxMask
 483  */
 484
 485 wxMask::wxMask()
 486 {
 487     m_maskBitmap = 0;
 488 }
 489
 490 // Construct a mask from a bitmap and a colour indicating
 491 // the transparent area
 492 wxMask::wxMask(const wxBitmap& bitmap, const wxColour& colour)
 493 {
 494     m_maskBitmap = 0;
 495   Create(bitmap, colour);
 496 }
 497
 498 // Construct a mask from a bitmap and a palette index indicating
 499 // the transparent area
 500 wxMask::wxMask(const wxBitmap& bitmap, int paletteIndex)
 501 {
 502     m_maskBitmap = 0;
 503   Create(bitmap, paletteIndex);
 504 }
 505
 506 // Construct a mask from a mono bitmap (copies the bitmap).
 507 wxMask::wxMask(const wxBitmap& bitmap)
 508 {
 509     m_maskBitmap = 0;
 510   Create(bitmap);
 511 }
 512
 513 wxMask::~wxMask()
 514 {
 515     if ( m_maskBitmap )
 516         ::DeleteObject((HBITMAP) m_maskBitmap);
 517 }
 518
 519 // Create a mask from a mono bitmap (copies the bitmap).
 520 bool wxMask::Create(const wxBitmap& bitmap)
 521 {
 522     if ( m_maskBitmap )
 523   {
 524     ::DeleteObject((HBITMAP) m_maskBitmap);
 525     m_maskBitmap = 0;
 526   }
 527   if (!bitmap.Ok() || bitmap.GetDepth() != 1)
 528   {
 529     return FALSE;
 530   }
 531   m_maskBitmap = (WXHBITMAP) CreateBitmap(
 532           bitmap.GetWidth(),
 533           bitmap.GetHeight(),
 534           1, 1, 0
 535           );
 536   HDC srcDC = CreateCompatibleDC(0);
 537   SelectObject(srcDC, (HBITMAP) bitmap.GetHBITMAP());
 538   HDC destDC = CreateCompatibleDC(0);
 539   SelectObject(destDC, (HBITMAP) m_maskBitmap);
 540   BitBlt(destDC, 0, 0, bitmap.GetWidth(), bitmap.GetHeight(), srcDC, 0, 0, SRCCOPY);
 541   SelectObject(srcDC, 0);
 542   DeleteDC(srcDC);
 543   SelectObject(destDC, 0);
 544   DeleteDC(destDC);
 545   return TRUE;
 546 }
 547
 548 // Create a mask from a bitmap and a palette index indicating
 549 // the transparent area
 550 bool wxMask::Create(const wxBitmap& bitmap, int paletteIndex)
 551 {
 552     if ( m_maskBitmap )
 553   {
 554     ::DeleteObject((HBITMAP) m_maskBitmap);
 555     m_maskBitmap = 0;
 556   }
 557   if (bitmap.Ok() && bitmap.GetPalette()->Ok())
 558   {
 559     unsigned char red, green, blue;
 560     if (bitmap.GetPalette()->GetRGB(paletteIndex, &red, &green, &blue))
 561     {
 562       wxColour transparentColour(red, green, blue);
 563       return Create(bitmap, transparentColour);
 564     }
 565   }
 566   return FALSE;
 567 }
 568
 569 // Create a mask from a bitmap and a colour indicating
 570 // the transparent area
 571 bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour)
 572 {
 573     if ( m_maskBitmap )
 574   {
 575     ::DeleteObject((HBITMAP) m_maskBitmap);
 576     m_maskBitmap = 0;
 577   }
 578   if (!bitmap.Ok())
 579   {
 580     return FALSE;
 581   }
 582
 583   // scan the bitmap for the transparent colour and set
 584   // the corresponding pixels in the mask to BLACK and
 585   // the rest to WHITE
 586   COLORREF maskColour = RGB(colour.Red(), colour.Green(), colour.Blue());
 587   m_maskBitmap = (WXHBITMAP) ::CreateBitmap(
 588           bitmap.GetWidth(),
 589           bitmap.GetHeight(),
 590           1, 1, 0
 591           );
 592   HDC srcDC = ::CreateCompatibleDC(0);
 593   ::SelectObject(srcDC, (HBITMAP) bitmap.GetHBITMAP());
 594   HDC destDC = ::CreateCompatibleDC(0);
 595   ::SelectObject(destDC, (HBITMAP) m_maskBitmap);
 596
 597   // this is not very efficient, but I can't think
 598   // of a better way of doing it
 599   for (int w = 0; w < bitmap.GetWidth(); w++)
 600   {
 601     for (int h = 0; h < bitmap.GetHeight(); h++)
 602     {
 603       COLORREF col = GetPixel(srcDC, w, h);
 604       if (col == maskColour)
 605       {
 606         ::SetPixel(destDC, w, h, RGB(0, 0, 0));
 607       }
 608       else
 609       {
 610         ::SetPixel(destDC, w, h, RGB(255, 255, 255));
 611       }
 612     }
 613   }
 614   ::SelectObject(srcDC, 0);
 615   ::DeleteDC(srcDC);
 616   ::SelectObject(destDC, 0);
 617   ::DeleteDC(destDC);
 618   return TRUE;
 619 }
 620
 621 /*
 622  * wxBitmapHandler
 623  */
 624
 625 IMPLEMENT_DYNAMIC_CLASS(wxBitmapHandler, wxObject)
 626
 627 bool wxBitmapHandler::Create(wxBitmap *WXUNUSED(bitmap), void *WXUNUSED(data), long WXUNUSED(type), int WXUNUSED(width), int WXUNUSED(height), int WXUNUSED(depth))
 628 {
 629   return FALSE;
 630 }
 631
 632 bool wxBitmapHandler::LoadFile(wxBitmap *WXUNUSED(bitmap), const wxString& WXUNUSED(name), long WXUNUSED(type),
 633     int WXUNUSED(desiredWidth), int WXUNUSED(desiredHeight))
 634 {
 635   return FALSE;
 636 }
 637
 638 bool wxBitmapHandler::SaveFile(wxBitmap *WXUNUSED(bitmap), const wxString& WXUNUSED(name), int WXUNUSED(type), const wxPalette *WXUNUSED(palette))
 639 {
 640   return FALSE;
 641 }
 642
 643 /*
 644  * Standard handlers
 645  */
 646
 647 class WXDLLEXPORT wxBMPResourceHandler: public wxBitmapHandler
 648 {
 649   DECLARE_DYNAMIC_CLASS(wxBMPResourceHandler)
 650 public:
 651   inline wxBMPResourceHandler()
 652   {
 653   m_name = "Windows bitmap resource";
 654   m_extension = "";
 655   m_type = wxBITMAP_TYPE_BMP_RESOURCE;
 656   };
 657
 658   virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
 659       int desiredWidth, int desiredHeight);
 660 };
 661 IMPLEMENT_DYNAMIC_CLASS(wxBMPResourceHandler, wxBitmapHandler)
 662
 663 bool wxBMPResourceHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long WXUNUSED(flags),
 664     int WXUNUSED(desiredWidth), int WXUNUSED(desiredHeight))
 665 {
 666     // TODO: load colourmap.
 667     M_BITMAPHANDLERDATA->m_hBitmap = (WXHBITMAP) ::LoadBitmap(wxGetInstance(), name);
 668     if (M_BITMAPHANDLERDATA->m_hBitmap)
 669     {
 670         M_BITMAPHANDLERDATA->m_ok = TRUE;
 671         BITMAP bm;
 672         GetObject((HBITMAP) M_BITMAPHANDLERDATA->m_hBitmap, sizeof(BITMAP), (LPSTR) &bm);
 673         M_BITMAPHANDLERDATA->m_width = bm.bmWidth;
 674         M_BITMAPHANDLERDATA->m_height = bm.bmHeight;
 675         M_BITMAPHANDLERDATA->m_depth = bm.bmBitsPixel;
 676
 677         if ( bitmap->IsKindOf(CLASSINFO(wxIcon)) )
 678         {
 679         }
 680
 681         return TRUE;
 682     }
 683
 684   // it's probably not found
 685   wxLogError(_T("Can't load bitmap '%s' from resources! Check .rc file."), name.c_str());
 686
 687   return FALSE;
 688 }
 689
 690 class WXDLLEXPORT wxBMPFileHandler: public wxBitmapHandler
 691 {
 692   DECLARE_DYNAMIC_CLASS(wxBMPFileHandler)
 693 public:
 694   inline wxBMPFileHandler()
 695   {
 696   m_name = "Windows bitmap file";
 697   m_extension = "bmp";
 698   m_type = wxBITMAP_TYPE_BMP;
 699   };
 700
 701   virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
 702       int desiredWidth, int desiredHeight);
 703   virtual bool SaveFile(wxBitmap *bitmap, const wxString& name, int type, const wxPalette *palette = NULL);
 704 };
 705 IMPLEMENT_DYNAMIC_CLASS(wxBMPFileHandler, wxBitmapHandler)
 706
 707 bool wxBMPFileHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long WXUNUSED(flags),
 708     int WXUNUSED(desiredWidth), int WXUNUSED(desiredHeight))
 709 {
 710 #if wxUSE_IMAGE_LOADING_IN_MSW
 711     wxPalette *palette = NULL;
 712     bool success = FALSE;
 713 /*
 714     if (type & wxBITMAP_DISCARD_COLOURMAP)
 715       success = wxLoadIntoBitmap(WXSTRINGCAST name, bitmap);
 716     else
 717 */
 718     success = (wxLoadIntoBitmap(WXSTRINGCAST name, bitmap, &palette) != 0);
 719     if (!success && palette)
 720     {
 721       delete palette;
 722       palette = NULL;
 723     }
 724     if (palette)
 725     {
 726         M_BITMAPHANDLERDATA->m_bitmapPalette = *palette;
 727         delete palette;
 728     }
 729     return success;
 730 #else
 731   return FALSE;
 732 #endif
 733 }
 734
 735 bool wxBMPFileHandler::SaveFile(wxBitmap *bitmap, const wxString& name, int WXUNUSED(type), const wxPalette *pal)
 736 {
 737 #if wxUSE_IMAGE_LOADING_IN_MSW
 738     wxPalette *actualPalette = (wxPalette *)pal;
 739     if (!actualPalette && (!M_BITMAPHANDLERDATA->m_bitmapPalette.IsNull()))
 740       actualPalette = & (M_BITMAPHANDLERDATA->m_bitmapPalette);
 741     return (wxSaveBitmap(WXSTRINGCAST name, bitmap, actualPalette) != 0);
 742 #else
 743   return FALSE;
 744 #endif
 745 }
 746
 747 void wxBitmap::CleanUpHandlers()
 748 {
 749   wxNode *node = sm_handlers.First();
 750   while ( node )
 751   {
 752     wxBitmapHandler *handler = (wxBitmapHandler *)node->Data();
 753     wxNode *next = node->Next();
 754     delete handler;
 755     delete node;
 756     node = next;
 757   }
 758 }
 759
 760 void wxBitmap::InitStandardHandlers()
 761 {
 762   AddHandler(new wxBMPResourceHandler);
 763   AddHandler(new wxBMPFileHandler);
 764
 765   // Not added by default: include xpmhand.h in your app
 766   // and call these in your wxApp::OnInit.
 767 //  AddHandler(new wxXPMFileHandler);
 768 //  AddHandler(new wxXPMDataHandler);
 769
 770   AddHandler(new wxICOResourceHandler);
 771   AddHandler(new wxICOFileHandler);
 772 }
 773
 774 static long createDIB(long xSize, long ySize, long bitsPerPixel,
 775                        HPALETTE hPal, LPBITMAPINFO* lpDIBHeader)
 776 {
 777    unsigned long   i, headerSize;
 778    LPBITMAPINFO    lpDIBheader = NULL;
 779    LPPALETTEENTRY  lpPe = NULL;
 780
 781
 782    // Allocate space for a DIB header
 783    headerSize = (sizeof(BITMAPINFOHEADER) + (256 * sizeof(PALETTEENTRY)));
 784    lpDIBheader = (BITMAPINFO *) malloc(headerSize);
 785    lpPe = (PALETTEENTRY *)((BYTE*)lpDIBheader + sizeof(BITMAPINFOHEADER));
 786
 787    GetPaletteEntries(hPal, 0, 256, lpPe);
 788
 789
 790    memset(lpDIBheader, 0x00, sizeof(BITMAPINFOHEADER));
 791
 792
 793    // Fill in the static parts of the DIB header
 794    lpDIBheader->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
 795    lpDIBheader->bmiHeader.biWidth = xSize;
 796    lpDIBheader->bmiHeader.biHeight = ySize;
 797    lpDIBheader->bmiHeader.biPlanes = 1;
 798
 799    // this value must be 1, 4, 8 or 24 so PixelDepth can only be
 800    lpDIBheader->bmiHeader.biBitCount = (WORD)(bitsPerPixel);
 801    lpDIBheader->bmiHeader.biCompression = BI_RGB;
 802    lpDIBheader->bmiHeader.biSizeImage = xSize * abs(ySize) * bitsPerPixel >>
 803 3;
 804    lpDIBheader->bmiHeader.biClrUsed = 256;
 805
 806
 807    // Initialize the DIB palette
 808    for (i = 0; i < 256; i++) {
 809       lpDIBheader->bmiColors[i].rgbReserved = lpPe[i].peFlags;
 810       lpDIBheader->bmiColors[i].rgbRed = lpPe[i].peRed;
 811       lpDIBheader->bmiColors[i].rgbGreen = lpPe[i].peGreen;
 812       lpDIBheader->bmiColors[i].rgbBlue = lpPe[i].peBlue;
 813    }
 814
 815    *lpDIBHeader = lpDIBheader;
 816
 817
 818    return (0);
 819
 820 }
 821
 822
 823
 824 static long freeDIB(LPBITMAPINFO lpDIBHeader)
 825 {
 826
 827    if (lpDIBHeader != NULL) {
 828       free(lpDIBHeader);
 829    }
 830
 831    return (0);
 832 }
 833
 834