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[wxWidgets.git] / src / os2 / bitmap.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/os2/bitmap.cpp
3 // Purpose: wxBitmap
4 // Author: David Webster
5 // Modified by:
6 // Created: 08/08/99
7 // RCS-ID: $Id$
8 // Copyright: (c) David Webster
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12 // For compilers that support precompilation, includes "wx.h".
13 #include "wx/wxprec.h"
14
15 #include "wx/bitmap.h"
16
17 #ifndef WX_PRECOMP
18 #include <stdio.h>
19
20 #include "wx/list.h"
21 #include "wx/utils.h"
22 #include "wx/app.h"
23 #include "wx/palette.h"
24 #include "wx/dcmemory.h"
25 #include "wx/icon.h"
26 #include "wx/log.h"
27 #include "wx/image.h"
28 #endif
29
30 #include "wx/os2/private.h"
31
32 #include "wx/xpmdecod.h"
33
34 // ----------------------------------------------------------------------------
35 // macros
36 // ----------------------------------------------------------------------------
37
38 IMPLEMENT_DYNAMIC_CLASS(wxBitmap, wxGDIObject)
39 IMPLEMENT_DYNAMIC_CLASS(wxMask, wxObject)
40
41 IMPLEMENT_DYNAMIC_CLASS(wxBitmapHandler, wxObject)
42
43 // ============================================================================
44 // implementation
45 // ============================================================================
46
47 // ----------------------------------------------------------------------------
48 // wxBitmapRefData
49 // ----------------------------------------------------------------------------
50
51 wxBitmapRefData::wxBitmapRefData()
52 {
53 m_nQuality = 0;
54 m_pSelectedInto = NULL;
55 m_nNumColors = 0;
56 m_pBitmapMask = NULL;
57 m_hBitmap = (WXHBITMAP) NULL;
58 } // end of wxBitmapRefData::wxBitmapRefData
59
60 void wxBitmapRefData::Free()
61 {
62 if ( m_pSelectedInto )
63 {
64 wxLogLastError(wxT("GpiDeleteBitmap(hbitmap)"));
65 }
66 if (m_hBitmap)
67 {
68 if (!::GpiDeleteBitmap((HBITMAP)m_hBitmap))
69 {
70 wxLogLastError(wxT("GpiDeleteBitmap(hbitmap)"));
71 }
72 }
73 if (m_pBitmapMask)
74 {
75 delete m_pBitmapMask;
76 m_pBitmapMask = NULL;
77 }
78 } // end of wxBitmapRefData::Free
79
80 // ----------------------------------------------------------------------------
81 // wxBitmap creation
82 // ----------------------------------------------------------------------------
83
84 // this function should be called from all wxBitmap ctors
85 void wxBitmap::Init()
86 {
87 m_bIsMono = false;
88 //
89 // True for all bitmaps created from bits, wxImages, Xpms
90 //
91 } // end of wxBitmap::Init
92
93 bool wxBitmap::CopyFromIconOrCursor(const wxGDIImage& rIcon)
94 {
95 HPOINTER hIcon = (HPOINTER)rIcon.GetHandle();
96 POINTERINFO SIconInfo;
97
98 if (!::WinQueryPointerInfo(hIcon, &SIconInfo))
99 {
100 wxLogLastError(wxT("WinQueryPointerInfo"));
101 return false;
102 }
103 wxBitmapRefData* pRefData = new wxBitmapRefData;
104
105 m_refData = pRefData;
106
107 int nWidth = rIcon.GetWidth();
108 int nHeight = rIcon.GetHeight();
109
110 pRefData->m_nWidth = nWidth;
111 pRefData->m_nHeight = nHeight;
112 pRefData->m_nDepth = wxDisplayDepth();
113
114 pRefData->m_hBitmap = (WXHBITMAP)SIconInfo.hbmColor;
115
116 wxMask* pMask = new wxMask(SIconInfo.hbmPointer);
117
118 pMask->SetMaskBitmap(GetHBITMAP());
119 SetMask(pMask);
120
121 return true;
122 } // end of wxBitmap::CopyFromIconOrCursor
123
124 bool wxBitmap::CopyFromCursor(
125 const wxCursor& rCursor
126 )
127 {
128 UnRef();
129
130 if (!rCursor.Ok())
131 return(false);
132 return(CopyFromIconOrCursor(rCursor));
133 } // end of wxBitmap::CopyFromCursor
134
135 bool wxBitmap::CopyFromIcon(
136 const wxIcon& rIcon
137 )
138 {
139 UnRef();
140
141 if (!rIcon.Ok())
142 return(false);
143
144 return CopyFromIconOrCursor(rIcon);
145 } // end of wxBitmap::CopyFromIcon
146
147 wxBitmap::~wxBitmap()
148 {
149 } // end of wxBitmap::~wxBitmap
150
151 wxBitmap::wxBitmap(
152 const char zBits[]
153 , int nWidth
154 , int nHeight
155 , int nDepth
156 )
157 {
158 Init();
159
160 wxBitmapRefData* pRefData = new wxBitmapRefData;
161 BITMAPINFOHEADER2 vHeader;
162 BITMAPINFO2 vInfo;
163 HDC hDc;
164 HPS hPs;
165 DEVOPENSTRUC vDop = { NULL, "DISPLAY", NULL, NULL, NULL, NULL, NULL, NULL, NULL };
166 SIZEL vSize = {0, 0};
167 char* pzData;
168
169 wxASSERT(vHabmain != NULL);
170
171 m_refData = pRefData;
172
173 pRefData->m_nWidth = nWidth;
174 pRefData->m_nHeight = nHeight;
175 pRefData->m_nDepth = nDepth;
176 pRefData->m_nNumColors = 0;
177 pRefData->m_pSelectedInto = NULL;
178
179 hDc = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
180 hPs = ::GpiCreatePS(vHabmain, hDc, &vSize, GPIA_ASSOC | PU_PELS);
181 if (hPs == 0)
182 {
183 wxLogLastError(wxT("GpiCreatePS Failure"));
184 }
185
186 if (nDepth == 1)
187 {
188 //
189 // We assume that it is in XBM format which is not quite the same as
190 // the format CreateBitmap() wants because the order of bytes in the
191 // line is reversed!
192 //
193 const size_t nBytesPerLine = (nWidth + 7) / 8;
194 const size_t nPadding = nBytesPerLine % 2;
195 const size_t nLen = nHeight * (nPadding + nBytesPerLine);
196 const char* pzSrc = zBits;
197 int nRows;
198 size_t nCols;
199
200 pzData = (char *)malloc(nLen);
201
202 char* pzDst = pzData;
203
204 for (nRows = 0; nRows < nHeight; nRows++)
205 {
206 for (nCols = 0; nCols < nBytesPerLine; nCols++)
207 {
208 unsigned char ucVal = *pzSrc++;
209 unsigned char ucReversed = 0;
210 int nBits;
211
212 for (nBits = 0; nBits < 8; nBits++)
213 {
214 ucReversed <<= 1;
215 ucReversed = (unsigned char)(ucReversed | (ucVal & 0x01));
216 ucVal >>= 1;
217 }
218 *pzDst++ = ucReversed;
219 }
220 if (nPadding)
221 *pzDst++ = 0;
222 }
223 }
224 else
225 {
226 //
227 // Bits should already be in Windows standard format
228 //
229 pzData = (char *)zBits; // const_cast is harmless
230 }
231
232 if (nDepth > 24)
233 nDepth = 24; // MAX supported in PM
234 memset(&vHeader, '\0', 16);
235 vHeader.cbFix = 16;
236 vHeader.cx = (USHORT)nWidth;
237 vHeader.cy = (USHORT)nHeight;
238 vHeader.cPlanes = 1L;
239 vHeader.cBitCount = (USHORT)nDepth;
240 vHeader.usReserved = 0;
241
242 memset(&vInfo, '\0', 16);
243 vInfo.cbFix = 16;
244 vInfo.cx = (USHORT)nWidth;
245 vInfo.cy = (USHORT)nHeight;
246 vInfo.cPlanes = 1L;
247 vInfo.cBitCount = (USHORT)nDepth;
248
249 HBITMAP hBmp = ::GpiCreateBitmap(hPs, &vHeader, CBM_INIT, (PBYTE)pzData, &vInfo);
250
251 if (!hBmp)
252 {
253 wxLogLastError(wxT("CreateBitmap"));
254 }
255 ::GpiDestroyPS(hPs);
256 ::DevCloseDC(hDc);
257 SetHBITMAP((WXHBITMAP)hBmp);
258 } // end of wxBitmap::wxBitmap
259
260 wxBitmap::wxBitmap(
261 int nW
262 , int nH
263 , int nD
264 )
265 {
266 Init();
267 (void)Create( nW
268 ,nH
269 ,nD
270 );
271 } // end of wxBitmap::wxBitmap
272
273 wxBitmap::wxBitmap(
274 const void* pData
275 , long lType
276 , int nWidth
277 , int nHeight
278 , int nDepth
279 )
280 {
281 Init();
282
283 (void)Create( pData
284 ,lType
285 ,nWidth
286 ,nHeight
287 ,nDepth
288 );
289 } // end of wxBitmap::wxBitmap
290
291 wxBitmap::wxBitmap(
292 int nId
293 , long lType
294 )
295 {
296 Init();
297 LoadFile( nId
298 ,(int)lType
299 );
300 SetId(nId);
301 } // end of wxBitmap::wxBitmap
302
303 bool wxBitmap::Create(
304 int nW
305 , int nH
306 , int nD
307 )
308 {
309 HBITMAP hBmp;
310 BITMAPINFOHEADER2 vHeader;
311
312 wxASSERT(vHabmain != NULL);
313 UnRef();
314 m_refData = new wxBitmapRefData;
315 GetBitmapData()->m_nWidth = nW;
316 GetBitmapData()->m_nHeight = nH;
317 GetBitmapData()->m_nDepth = nD;
318
319 //
320 // Xpms and bitmaps from other images can also be mono's, but only
321 // mono's need help changing their colors with MemDC changes
322 //
323 if (nD > 0)
324 {
325 DEVOPENSTRUC vDop = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
326 SIZEL vSize = {0, 0};
327 HDC hDC = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
328 HPS hPS = ::GpiCreatePS(vHabmain, hDC, &vSize, PU_PELS | GPIA_ASSOC);
329
330 if (nD == 1)
331 m_bIsMono = true;
332 memset(&vHeader, '\0', 16);
333 vHeader.cbFix = 16;
334 vHeader.cx = nW;
335 vHeader.cy = nH;
336 vHeader.cPlanes = 1;
337 vHeader.cBitCount = 24; //nD;
338
339 hBmp = ::GpiCreateBitmap( hPS
340 ,&vHeader
341 ,0L
342 ,NULL
343 ,NULL
344 );
345 ::GpiDestroyPS(hPS);
346 ::DevCloseDC(hDC);
347 }
348 else
349 {
350 HPS hPSScreen;
351 HDC hDCScreen;
352 LONG lBitCount;
353
354 hPSScreen = ::WinGetScreenPS(HWND_DESKTOP);
355 hDCScreen = ::GpiQueryDevice(hPSScreen);
356 ::DevQueryCaps(hDCScreen, CAPS_COLOR_BITCOUNT, 1L, &lBitCount);
357
358 if (lBitCount > 24)
359 lBitCount = 24;
360
361 memset(&vHeader, '\0', 16);
362 vHeader.cbFix = 16;
363 vHeader.cx = nW;
364 vHeader.cy = nH;
365 vHeader.cPlanes = 1;
366 vHeader.cBitCount = (USHORT)lBitCount;
367
368 hBmp = ::GpiCreateBitmap( hPSScreen
369 ,&vHeader
370 ,0L
371 ,NULL
372 ,NULL
373 );
374
375 GetBitmapData()->m_nDepth = wxDisplayDepth();
376 ::WinReleasePS(hPSScreen);
377 }
378 SetHBITMAP((WXHBITMAP)hBmp);
379
380 return Ok();
381 } // end of wxBitmap::Create
382
383 bool wxBitmap::LoadFile(const wxString& filename, long type)
384 {
385 UnRef();
386
387 wxBitmapHandler *handler = wxDynamicCast(FindHandler(type), wxBitmapHandler);
388
389 if ( handler )
390 {
391 m_refData = new wxBitmapRefData;
392
393 return handler->LoadFile(this, filename, type, -1, -1);
394 }
395 #if wxUSE_IMAGE
396 else // no bitmap handler found
397 {
398 wxImage image;
399 if ( image.LoadFile( filename, type ) && image.Ok() )
400 {
401 *this = wxBitmap(image);
402
403 return true;
404 }
405 }
406 #endif // wxUSE_IMAGE
407
408 return false;
409 }
410
411 bool wxBitmap::LoadFile(
412 int nId
413 , long lType
414 )
415 {
416 UnRef();
417
418 wxBitmapHandler* pHandler = wxDynamicCast( FindHandler(lType)
419 ,wxBitmapHandler
420 );
421
422 if (pHandler)
423 {
424 m_refData = new wxBitmapRefData;
425
426 return(pHandler->LoadFile( this
427 ,nId
428 ,lType
429 , -1
430 , -1
431 ));
432 }
433 else
434 {
435 return false;
436 }
437 } // end of wxBitmap::LoadFile
438
439 bool wxBitmap::Create(
440 const void* pData
441 , long lType
442 , int nWidth
443 , int nHeight
444 , int nDepth
445 )
446 {
447 UnRef();
448
449 wxBitmapHandler* pHandler = wxDynamicCast( FindHandler(lType)
450 ,wxBitmapHandler
451 );
452
453 if (!pHandler)
454 {
455 wxLogDebug(wxT("Failed to create bitmap: no bitmap handler for type %ld defined."), lType);
456
457 return false;
458 }
459
460 m_refData = new wxBitmapRefData;
461
462 return(pHandler->Create( this
463 ,pData
464 ,lType
465 ,nWidth
466 ,nHeight
467 ,nDepth
468 ));
469 } // end of wxBitmap::Create
470
471 bool wxBitmap::SaveFile(
472 const wxString& rFilename
473 , int lType
474 , const wxPalette* pPalette
475 )
476 {
477 wxBitmapHandler* pHandler = wxDynamicCast( FindHandler(lType)
478 ,wxBitmapHandler
479 );
480
481 if (pHandler)
482 {
483 return pHandler->SaveFile( this
484 ,rFilename
485 ,lType
486 ,pPalette
487 );
488 }
489 else
490 {
491 // FIXME what about palette? shouldn't we use it?
492 wxImage vImage = ConvertToImage();
493
494 if (!vImage.Ok())
495 return false;
496
497 return(vImage.SaveFile( rFilename
498 ,lType
499 ));
500 }
501 } // end of wxBitmap::SaveFile
502
503
504 // ----------------------------------------------------------------------------
505 // wxImage-wxBitmap conversion
506 // ----------------------------------------------------------------------------
507
508 bool wxBitmap::CreateFromImage (
509 const wxImage& rImage
510 , int nDepth
511 )
512 {
513 wxCHECK_MSG(rImage.Ok(), false, wxT("invalid image"));
514 m_refData = new wxBitmapRefData();
515
516 int nSizeLimit = 1024 * 768 * 3;
517 int nWidth = rImage.GetWidth();
518 int nBmpHeight = rImage.GetHeight();
519 int nBytePerLine = nWidth * 3;
520 int nSizeDWORD = sizeof(DWORD);
521 int nLineBoundary = nBytePerLine % nSizeDWORD;
522 int nPadding = 0;
523
524 if (nLineBoundary > 0)
525 {
526 nPadding = nSizeDWORD - nLineBoundary;
527 nBytePerLine += nPadding;
528 }
529
530 //
531 // Calc the number of DIBs and heights of DIBs
532 //
533 int nNumDIB = 1;
534 int nHRemain = 0;
535 int nHeight = nSizeLimit / nBytePerLine;
536
537 if (nHeight >= nBmpHeight)
538 nHeight = nBmpHeight;
539 else
540 {
541 nNumDIB = nBmpHeight / nHeight;
542 nHRemain = nBmpHeight % nHeight;
543 if (nHRemain > 0)
544 nNumDIB++;
545 }
546
547 //
548 // Set bitmap parameters
549 //
550 wxCHECK_MSG(rImage.Ok(), false, wxT("invalid image"));
551 SetWidth(nWidth);
552 SetHeight(nBmpHeight);
553 if (nDepth == 1)
554 m_bIsMono = true;
555 else
556 m_bIsMono = false;
557 if (nDepth == -1)
558 nDepth = wxDisplayDepth();
559 SetDepth(nDepth);
560
561 #if wxUSE_PALETTE
562 //
563 // Copy the palette from the source image
564 //
565 SetPalette(rImage.GetPalette());
566 #endif // wxUSE_PALETTE
567
568 //
569 // Create a DIB header
570 //
571 BITMAPINFOHEADER2 vHeader;
572 BITMAPINFO2 vInfo;
573
574 //
575 // Fill in the DIB header
576 //
577 memset(&vHeader, '\0', 16);
578 vHeader.cbFix = 16;
579 vHeader.cx = (ULONG)nWidth;
580 vHeader.cy = (ULONG)nHeight;
581 vHeader.cPlanes = 1L;
582 vHeader.cBitCount = 24;
583
584 //
585 // Memory for DIB data
586 //
587 unsigned char* pucBits;
588
589 pucBits = (unsigned char *)malloc(nBytePerLine * nHeight);
590 if(!pucBits)
591 {
592 wxFAIL_MSG(wxT("could not allocate memory for DIB"));
593 return false;
594 }
595 memset(pucBits, '\0', (nBytePerLine * nHeight));
596
597 //
598 // Create and set the device-dependent bitmap
599 //
600 DEVOPENSTRUC vDop = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
601 SIZEL vSize = {0, 0};
602 HDC hDC = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
603 HPS hPS = ::GpiCreatePS(vHabmain, hDC, &vSize, PU_PELS | GPIA_ASSOC);
604 LONG lScans;
605 HDC hDCScreen = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
606 HPS hPSScreen;
607 HBITMAP hBmp;
608 HBITMAP hBmpOld;
609
610 memset(&vInfo, '\0', 16);
611 vInfo.cbFix = 16;
612 vInfo.cx = (ULONG)nWidth;
613 vInfo.cy = (ULONG)nHeight;
614 vInfo.cPlanes = 1;
615 vInfo.cBitCount = 24; // Set to desired count going in
616
617 hBmp = ::GpiCreateBitmap( hPS
618 ,&vHeader
619 ,0L
620 ,NULL
621 ,NULL
622 );
623 #if wxUSE_PALETTE
624 HPAL hOldPalette = NULLHANDLE;
625 if (rImage.GetPalette().Ok())
626 {
627 hOldPalette = ::GpiSelectPalette(hPS, (HPAL)rImage.GetPalette().GetHPALETTE());
628 }
629 #endif // wxUSE_PALETTE
630
631 //
632 // Copy image data into DIB data and then into DDB (in a loop)
633 //
634 unsigned char* pData = rImage.GetData();
635 int i;
636 int j;
637 int n;
638 int nOrigin = 0;
639 unsigned char* ptdata = pData;
640 unsigned char* ptbits;
641
642 if ((hBmpOld = ::GpiSetBitmap(hPS, hBmp)) == HBM_ERROR)
643 {
644 ERRORID vError;
645 wxString sError;
646
647 vError = ::WinGetLastError(vHabmain);
648 sError = wxPMErrorToStr(vError);
649 }
650 for (n = 0; n < nNumDIB; n++)
651 {
652 if (nNumDIB > 1 && n == nNumDIB - 1 && nHRemain > 0)
653 {
654 //
655 // Redefine height and size of the (possibly) last smaller DIB
656 // memory is not reallocated
657 //
658 nHeight = nHRemain;
659 vHeader.cy = (DWORD)(nHeight);
660 vHeader.cbImage = nBytePerLine * nHeight;
661 }
662 ptbits = pucBits;
663 for (j = 0; j < nHeight; j++)
664 {
665 for (i = 0; i < nWidth; i++)
666 {
667 *(ptbits++) = *(ptdata + 2);
668 *(ptbits++) = *(ptdata + 1);
669 *(ptbits++) = *(ptdata);
670 ptdata += 3;
671 }
672 for (i = 0; i < nPadding; i++)
673 *(ptbits++) = 0;
674 }
675
676 //
677 // Have to do something similar to WIN32's StretchDIBits, use GpiBitBlt
678 // in combination with setting the bits into the selected bitmap
679 //
680 if ((lScans = ::GpiSetBitmapBits( hPS
681 ,0 // Start at the bottom
682 ,(LONG)nHeight // One line per scan
683 ,(PBYTE)pucBits
684 ,&vInfo
685 )) == GPI_ALTERROR)
686 {
687 ERRORID vError;
688 wxString sError;
689
690 vError = ::WinGetLastError(vHabmain);
691 sError = wxPMErrorToStr(vError);
692 }
693 hPSScreen = ::GpiCreatePS( vHabmain
694 ,hDCScreen
695 ,&vSize
696 ,PU_PELS | GPIA_ASSOC
697 );
698
699 POINTL vPoint[4] = { {0, nOrigin},
700 {nWidth, nHeight},
701 {0, 0}, {nWidth, nHeight}
702 };
703
704
705 ::GpiBitBlt( hPSScreen
706 ,hPS
707 ,4
708 ,vPoint
709 ,ROP_SRCCOPY
710 ,BBO_IGNORE
711 );
712 ::GpiDestroyPS(hPSScreen);
713 nOrigin += nHeight;
714 }
715 SetHBITMAP((WXHBITMAP)hBmp);
716 #if wxUSE_PALETTE
717 if (hOldPalette)
718 ::GpiSelectPalette(hPS, hOldPalette);
719 #endif // wxUSE_PALETTE
720
721 //
722 // Similarly, created an mono-bitmap for the possible mask
723 //
724 if (rImage.HasMask())
725 {
726 vHeader.cbFix = 16;
727 vHeader.cx = nWidth;
728 vHeader.cy = nHeight;
729 vHeader.cPlanes = 1;
730 vHeader.cBitCount = 24;
731 hBmp = ::GpiCreateBitmap( hPS
732 ,&vHeader
733 ,0L
734 ,NULL
735 ,NULL
736 );
737 hBmpOld = ::GpiSetBitmap(hPS, hBmp);
738 if (nNumDIB == 1)
739 nHeight = nBmpHeight;
740 else
741 nHeight = nSizeLimit / nBytePerLine;
742 vHeader.cy = (DWORD)(nHeight);
743 nOrigin = 0;
744
745 unsigned char cRed = rImage.GetMaskRed();
746 unsigned char cGreen = rImage.GetMaskGreen();
747 unsigned char cBlue = rImage.GetMaskBlue();
748 unsigned char cZero = 0;
749 unsigned char cOne = 255;
750
751 ptdata = pData;
752 for (n = 0; n < nNumDIB; n++)
753 {
754 if (nNumDIB > 1 && n == nNumDIB - 1 && nHRemain > 0)
755 {
756 //
757 // Redefine height and size of the (possibly) last smaller DIB
758 // memory is not reallocated
759 //
760 nHeight = nHRemain;
761 vHeader.cy = (DWORD)(nHeight);
762 vHeader.cbImage = nBytePerLine * nHeight;
763 }
764 ptbits = pucBits;
765 for (int j = 0; j < nHeight; j++)
766 {
767 for (i = 0; i < nWidth; i++)
768 {
769 unsigned char cRedImage = (*(ptdata++)) ;
770 unsigned char cGreenImage = (*(ptdata++)) ;
771 unsigned char cBlueImage = (*(ptdata++)) ;
772
773 if ((cRedImage != cRed) || (cGreenImage != cGreen) || (cBlueImage != cBlue))
774 {
775 *(ptbits++) = cOne;
776 *(ptbits++) = cOne;
777 *(ptbits++) = cOne;
778 }
779 else
780 {
781 *(ptbits++) = cZero;
782 *(ptbits++) = cZero;
783 *(ptbits++) = cZero;
784 }
785 }
786 for (i = 0; i < nPadding; i++)
787 *(ptbits++) = cZero;
788 }
789 lScans = ::GpiSetBitmapBits( hPS
790 ,0 // Start at the bottom
791 ,(LONG)nHeight // One line per scan
792 ,(PBYTE)pucBits
793 ,&vInfo
794 );
795 hPSScreen = ::GpiCreatePS( vHabmain
796 ,hDCScreen
797 ,&vSize
798 ,PU_PELS | GPIA_ASSOC
799 );
800 POINTL vPoint2[4] = { {0, nOrigin},
801 {nWidth, nHeight},
802 {0, 0}, {nWidth, nHeight}
803 };
804 ::GpiBitBlt( hPSScreen
805 ,hPS
806 ,4
807 ,vPoint2
808 ,ROP_SRCCOPY
809 ,BBO_IGNORE
810 );
811 ::GpiDestroyPS(hPSScreen);
812 nOrigin += nHeight;
813 }
814
815 //
816 // Create a wxMask object
817 //
818 wxMask* pMask = new wxMask();
819
820 pMask->SetMaskBitmap((WXHBITMAP)hBmp);
821 SetMask(pMask);
822 hBmpOld = ::GpiSetBitmap(hPS, hBmpOld);
823 }
824
825 //
826 // Free allocated resources
827 //
828 ::GpiSetBitmap(hPS, NULLHANDLE);
829 ::GpiDestroyPS(hPS);
830 ::DevCloseDC(hDCScreen);
831 ::DevCloseDC(hDC);
832 free(pucBits);
833 return true;
834 } // end of wxBitmap::CreateFromImage
835
836 wxImage wxBitmap::ConvertToImage() const
837 {
838 wxImage vImage;
839 wxDC* pDC;
840
841 wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
842
843 //
844 // Create an wxImage object
845 //
846 int nWidth = GetWidth();
847 int nHeight = GetHeight();
848 int nDevWidth;
849 int nDevHeight;
850 int nBytePerLine = nWidth * 3;
851 int nSizeDWORD = sizeof(DWORD);
852 int nLineBoundary = nBytePerLine % nSizeDWORD;
853 int nPadding = 0;
854 unsigned char* pData;
855 unsigned char* lpBits;
856 long lScans;
857 BITMAPINFOHEADER2 vDIBh;
858 BITMAPINFO2 vDIBInfo;
859 HPS hPSMem;
860 HBITMAP hBitmap;
861 HBITMAP hOldBitmap;
862 DEVOPENSTRUC vDop = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
863 SIZEL vSizlPage = {0,0};
864 HDC hDCMem = NULLHANDLE;
865
866 vImage.Create( nWidth
867 ,nHeight
868 );
869 pData = vImage.GetData();
870 if(!pData)
871 {
872 wxFAIL_MSG( wxT("could not allocate data for image") );
873 return wxNullImage;
874 }
875 if(nLineBoundary > 0)
876 {
877 nPadding = nSizeDWORD - nLineBoundary;
878 nBytePerLine += nPadding;
879 }
880 wxDisplaySize( &nDevWidth
881 ,&nDevHeight
882 );
883 //
884 // Create and fill a DIB header
885 //
886 memset(&vDIBh, '\0', 16);
887 vDIBh.cbFix = 16;
888 vDIBh.cx = nWidth;
889 vDIBh.cy = nHeight;
890 vDIBh.cPlanes = 1;
891 vDIBh.cBitCount = 24;
892
893 memset(&vDIBInfo, '\0', 16);
894 vDIBInfo.cbFix = 16;
895 vDIBInfo.cx = nWidth;
896 vDIBInfo.cy = nHeight;
897 vDIBInfo.cPlanes = 1;
898 vDIBInfo.cBitCount = 24;
899
900 lpBits = (unsigned char *)malloc(nBytePerLine * nHeight);
901 if (!lpBits)
902 {
903 wxFAIL_MSG(wxT("could not allocate data for DIB"));
904 free(pData);
905 return wxNullImage;
906 }
907 memset(lpBits, '\0', (nBytePerLine * nHeight));
908 hBitmap = (HBITMAP)GetHBITMAP();
909
910 //
911 // May already be selected into a PS
912 //
913 if ((pDC = GetSelectedInto()) != NULL)
914 {
915 hPSMem = pDC->GetHPS();
916 }
917 else
918 {
919 hDCMem = ::DevOpenDC( vHabmain
920 ,OD_MEMORY
921 ,"*"
922 ,5L
923 ,(PDEVOPENDATA)&vDop
924 ,NULLHANDLE
925 );
926 hPSMem = ::GpiCreatePS( vHabmain
927 ,hDCMem
928 ,&vSizlPage
929 ,PU_PELS | GPIA_ASSOC
930 );
931 }
932 if ((hOldBitmap = ::GpiSetBitmap(hPSMem, hBitmap)) == HBM_ERROR)
933 {
934 ERRORID vError;
935 wxString sError;
936
937 vError = ::WinGetLastError(vHabmain);
938 sError = wxPMErrorToStr(vError);
939 }
940
941 //
942 // Copy data from the device-dependent bitmap to the DIB
943 //
944 if ((lScans = ::GpiQueryBitmapBits( hPSMem
945 ,0L
946 ,(LONG)nHeight
947 ,(PBYTE)lpBits
948 ,&vDIBInfo
949 )) == GPI_ALTERROR)
950 {
951 ERRORID vError;
952 wxString sError;
953
954 vError = ::WinGetLastError(vHabmain);
955 sError = wxPMErrorToStr(vError);
956 }
957
958 //
959 // Copy DIB data into the wxImage object
960 //
961 int i;
962 int j;
963 unsigned char* ptdata = pData;
964 unsigned char* ptbits = lpBits;
965
966 for (i = 0; i < nHeight; i++)
967 {
968 for (j = 0; j < nWidth; j++)
969 {
970 *(ptdata++) = *(ptbits+2);
971 *(ptdata++) = *(ptbits+1);
972 *(ptdata++) = *(ptbits );
973 ptbits += 3;
974 }
975 ptbits += nPadding;
976 }
977 if ((pDC = GetSelectedInto()) == NULL)
978 {
979 ::GpiSetBitmap(hPSMem, NULLHANDLE);
980 ::GpiDestroyPS(hPSMem);
981 ::DevCloseDC(hDCMem);
982 }
983
984 //
985 // Similarly, set data according to the possible mask bitmap
986 //
987 if (GetMask() && GetMask()->GetMaskBitmap())
988 {
989 hBitmap = (HBITMAP)GetMask()->GetMaskBitmap();
990
991 //
992 // Memory DC/PS created, color set, data copied, and memory DC/PS deleted
993 //
994 HDC hMemDC = ::DevOpenDC( vHabmain
995 ,OD_MEMORY
996 ,"*"
997 ,5L
998 ,(PDEVOPENDATA)&vDop
999 ,NULLHANDLE
1000 );
1001 HPS hMemPS = ::GpiCreatePS( vHabmain
1002 ,hMemDC
1003 ,&vSizlPage
1004 ,PU_PELS | GPIA_ASSOC
1005 );
1006 ::GpiSetColor(hMemPS, OS2RGB(0, 0, 0));
1007 ::GpiSetBackColor(hMemPS, OS2RGB(255, 255, 255) );
1008 ::GpiSetBitmap(hMemPS, hBitmap);
1009 ::GpiQueryBitmapBits( hPSMem
1010 ,0L
1011 ,(LONG)nHeight
1012 ,(PBYTE)lpBits
1013 ,&vDIBInfo
1014 );
1015 ::GpiSetBitmap(hMemPS, NULLHANDLE);
1016 ::GpiDestroyPS(hMemPS);
1017 ::DevCloseDC(hMemDC);
1018
1019 //
1020 // Background color set to RGB(16,16,16) in consistent with wxGTK
1021 //
1022 unsigned char ucRed = 16;
1023 unsigned char ucGreen = 16;
1024 unsigned char ucBlue = 16;
1025
1026 ptdata = pData;
1027 ptbits = lpBits;
1028 for (i = 0; i < nHeight; i++)
1029 {
1030 for (j = 0; j < nWidth; j++)
1031 {
1032 if (*ptbits != 0)
1033 ptdata += 3;
1034 else
1035 {
1036 *(ptdata++) = ucRed;
1037 *(ptdata++) = ucGreen;
1038 *(ptdata++) = ucBlue;
1039 }
1040 ptbits += 3;
1041 }
1042 ptbits += nPadding;
1043 }
1044 vImage.SetMaskColour( ucRed
1045 ,ucGreen
1046 ,ucBlue
1047 );
1048 vImage.SetMask(true);
1049 }
1050 else
1051 {
1052 vImage.SetMask(false);
1053 }
1054
1055 //
1056 // Free allocated resources
1057 //
1058 free(lpBits);
1059 return vImage;
1060 } // end of wxBitmap::ConvertToImage
1061
1062 // ----------------------------------------------------------------------------
1063 // sub bitmap extraction
1064 // ----------------------------------------------------------------------------
1065
1066 wxBitmap wxBitmap::GetSubBitmap(
1067 const wxRect& rRect
1068 ) const
1069 {
1070 wxCHECK_MSG( Ok() &&
1071 (rRect.x >= 0) && (rRect.y >= 0) &&
1072 (rRect.x + rRect.width <= GetWidth()) &&
1073 (rRect.y + rRect.height <= GetHeight()),
1074 wxNullBitmap, wxT("Invalid bitmap or bitmap region") );
1075
1076 wxBitmap vRet( rRect.width
1077 ,rRect.height
1078 ,GetDepth()
1079 );
1080 wxASSERT_MSG( vRet.Ok(), wxT("GetSubBitmap error") );
1081
1082
1083 //
1084 // Copy bitmap data
1085 //
1086 SIZEL vSize = {0, 0};
1087 DEVOPENSTRUC vDop = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
1088 HDC hDCSrc = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1089 HDC hDCDst = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1090 HPS hPSSrc = ::GpiCreatePS(vHabmain, hDCSrc, &vSize, PU_PELS | GPIA_ASSOC);
1091 HPS hPSDst = ::GpiCreatePS(vHabmain, hDCDst, &vSize, PU_PELS | GPIA_ASSOC);
1092 POINTL vPoint[4] = { {0, 0}, {rRect.width, rRect.height},
1093 {rRect.x, rRect.y},
1094 {rRect.x + rRect.width, rRect.y + rRect.height}
1095 };
1096
1097 ::GpiSetBitmap(hPSSrc, (HBITMAP) GetHBITMAP());
1098 ::GpiSetBitmap(hPSDst, (HBITMAP) vRet.GetHBITMAP());
1099 ::GpiBitBlt( hPSDst
1100 ,hPSSrc
1101 ,4L
1102 ,vPoint
1103 ,ROP_SRCCOPY
1104 ,BBO_IGNORE
1105 );
1106
1107 //
1108 // Copy mask if there is one
1109 //
1110 if (GetMask())
1111 {
1112 BITMAPINFOHEADER2 vBmih;
1113
1114 memset(&vBmih, '\0', sizeof(BITMAPINFOHEADER2));
1115 vBmih.cbFix = sizeof(BITMAPINFOHEADER2);
1116 vBmih.cx = rRect.width;
1117 vBmih.cy = rRect.height;
1118 vBmih.cPlanes = 1;
1119 vBmih.cBitCount = 24;
1120
1121 HBITMAP hBmpMask = ::GpiCreateBitmap( hPSDst
1122 ,&vBmih
1123 ,0L
1124 ,NULL
1125 ,NULL
1126 );
1127
1128 ::GpiSetBitmap(hPSSrc, (HBITMAP) GetHBITMAP());
1129 ::GpiSetBitmap(hPSDst, (HBITMAP) vRet.GetHBITMAP());
1130
1131 ::GpiSetBitmap(hPSSrc, (HBITMAP) GetMask()->GetMaskBitmap());
1132 ::GpiSetBitmap(hPSDst, (HBITMAP) hBmpMask);
1133 ::GpiBitBlt( hPSDst
1134 ,hPSSrc
1135 ,4L
1136 ,vPoint
1137 ,ROP_SRCCOPY
1138 ,BBO_IGNORE
1139 );
1140
1141 wxMask* pMask = new wxMask((WXHBITMAP)hBmpMask);
1142 vRet.SetMask(pMask);
1143 }
1144
1145 ::GpiSetBitmap(hPSSrc, NULL);
1146 ::GpiSetBitmap(hPSDst, NULL);
1147 ::GpiDestroyPS(hPSSrc);
1148 ::GpiDestroyPS(hPSDst);
1149 ::DevCloseDC(hDCSrc);
1150 ::DevCloseDC(hDCDst);
1151 return vRet;
1152 } // end of wxBitmap::GetSubBitmap
1153
1154 // ----------------------------------------------------------------------------
1155 // wxBitmap accessors
1156 // ----------------------------------------------------------------------------
1157
1158 void wxBitmap::SetQuality(
1159 int nQ
1160 )
1161 {
1162 EnsureHasData();
1163
1164 GetBitmapData()->m_nQuality = nQ;
1165 } // end of wxBitmap::SetQuality
1166
1167 void wxBitmap::SetPalette(
1168 const wxPalette& rPalette
1169 )
1170 {
1171 EnsureHasData();
1172
1173 GetBitmapData()->m_vBitmapPalette = rPalette;
1174 } // end of wxBitmap::SetPalette
1175
1176 void wxBitmap::SetMask(
1177 wxMask* pMask
1178 )
1179 {
1180 EnsureHasData();
1181
1182 GetBitmapData()->m_pBitmapMask = pMask;
1183 } // end of wxBitmap::SetMask
1184
1185 wxBitmap wxBitmap::GetBitmapForDC(wxDC& WXUNUSED(rDc)) const
1186 {
1187 return(*this);
1188 } // end of wxBitmap::GetBitmapForDC
1189
1190 // ----------------------------------------------------------------------------
1191 // wxMask
1192 // ----------------------------------------------------------------------------
1193
1194 wxMask::wxMask()
1195 {
1196 m_hMaskBitmap = 0;
1197 } // end of wxMask::wxMask
1198
1199 // Construct a mask from a bitmap and a colour indicating
1200 // the transparent area
1201 wxMask::wxMask(
1202 const wxBitmap& rBitmap
1203 , const wxColour& rColour
1204 )
1205 {
1206 m_hMaskBitmap = 0;
1207 Create( rBitmap
1208 ,rColour
1209 );
1210 } // end of wxMask::wxMask
1211
1212 // Construct a mask from a bitmap and a palette index indicating
1213 // the transparent area
1214 wxMask::wxMask(
1215 const wxBitmap& rBitmap
1216 , int nPaletteIndex
1217 )
1218 {
1219 m_hMaskBitmap = 0;
1220 Create( rBitmap
1221 ,nPaletteIndex
1222 );
1223 } // end of wxMask::wxMask
1224
1225 // Construct a mask from a mono bitmap (copies the bitmap).
1226 wxMask::wxMask(
1227 const wxBitmap& rBitmap
1228 )
1229 {
1230 m_hMaskBitmap = 0;
1231 Create(rBitmap);
1232 } // end of wxMask::wxMask
1233
1234 wxMask::~wxMask()
1235 {
1236 if (m_hMaskBitmap)
1237 ::GpiDeleteBitmap((HBITMAP)m_hMaskBitmap);
1238 } // end of wxMask::~wxMask
1239
1240 // Create a mask from a mono bitmap (copies the bitmap).
1241 bool wxMask::Create(
1242 const wxBitmap& rBitmap
1243 )
1244 {
1245 BITMAPINFOHEADER2 vBmih;
1246 SIZEL vSize = {0, 0};
1247 DEVOPENSTRUC vDop = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
1248 HDC hDCSrc = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1249 HDC hDCDst = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1250 HPS hPSSrc = ::GpiCreatePS(vHabmain, hDCSrc, &vSize, PU_PELS | GPIA_ASSOC);
1251 HPS hPSDst = ::GpiCreatePS(vHabmain, hDCDst, &vSize, PU_PELS | GPIA_ASSOC);
1252 POINTL vPoint[4] = { {0 ,0}, {rBitmap.GetWidth(), rBitmap.GetHeight()},
1253 {0, 0}, {rBitmap.GetWidth(), rBitmap.GetHeight()}
1254 };
1255
1256 if (m_hMaskBitmap)
1257 {
1258 ::GpiDeleteBitmap((HBITMAP) m_hMaskBitmap);
1259 m_hMaskBitmap = 0;
1260 }
1261 if (!rBitmap.Ok() || rBitmap.GetDepth() != 1)
1262 {
1263 return false;
1264 }
1265
1266 memset(&vBmih, '\0', sizeof(BITMAPINFOHEADER2));
1267 vBmih.cbFix = sizeof(BITMAPINFOHEADER2);
1268 vBmih.cx = rBitmap.GetWidth();
1269 vBmih.cy = rBitmap.GetHeight();
1270 vBmih.cPlanes = 1;
1271 vBmih.cBitCount = 24;
1272
1273 m_hMaskBitmap = ::GpiCreateBitmap( hPSDst
1274 ,&vBmih
1275 ,0L
1276 ,NULL
1277 ,NULL
1278 );
1279
1280 ::GpiSetBitmap(hPSSrc, (HBITMAP) rBitmap.GetHBITMAP());
1281 ::GpiSetBitmap(hPSDst, (HBITMAP) m_hMaskBitmap);
1282 ::GpiBitBlt( hPSDst
1283 ,hPSSrc
1284 ,4L
1285 ,vPoint
1286 ,ROP_SRCCOPY
1287 ,BBO_IGNORE
1288 );
1289
1290 ::GpiDestroyPS(hPSSrc);
1291 ::GpiDestroyPS(hPSDst);
1292 ::DevCloseDC(hDCSrc);
1293 ::DevCloseDC(hDCDst);
1294 return true;
1295 } // end of wxMask::Create
1296
1297 // Create a mask from a bitmap and a palette index indicating
1298 // the transparent area
1299 bool wxMask::Create(
1300 const wxBitmap& rBitmap
1301 , int nPaletteIndex
1302 )
1303 {
1304 if (m_hMaskBitmap)
1305 {
1306 ::GpiDeleteBitmap((HBITMAP) m_hMaskBitmap);
1307 m_hMaskBitmap = 0;
1308 }
1309 if (rBitmap.Ok() && rBitmap.GetPalette()->Ok())
1310 {
1311 unsigned char cRed;
1312 unsigned char cGreen;
1313 unsigned char cBlue;
1314
1315 if (rBitmap.GetPalette()->GetRGB( nPaletteIndex
1316 ,&cRed
1317 ,&cGreen
1318 ,&cBlue
1319 ))
1320 {
1321 wxColour vTransparentColour( cRed
1322 ,cGreen
1323 ,cBlue
1324 );
1325
1326 return (Create( rBitmap
1327 ,vTransparentColour
1328 ));
1329 }
1330 }
1331 return false;
1332 } // end of wxMask::Create
1333
1334 // Create a mask from a bitmap and a colour indicating
1335 // the transparent area
1336 bool wxMask::Create(
1337 const wxBitmap& rBitmap
1338 , const wxColour& rColour
1339 )
1340 {
1341 bool bOk = true;
1342 COLORREF vMaskColour = OS2RGB( rColour.Red()
1343 ,rColour.Green()
1344 ,rColour.Blue()
1345 );
1346 BITMAPINFOHEADER2 vBmih;
1347 SIZEL vSize = {0, 0};
1348 DEVOPENSTRUC vDop = { NULL, "DISPLAY", NULL, NULL, NULL, NULL, NULL, NULL, NULL };
1349 HDC hDCSrc = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1350 HDC hDCDst = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1351 HPS hPSSrc = ::GpiCreatePS(vHabmain, hDCSrc, &vSize, PU_PELS | GPIA_ASSOC);
1352 HPS hPSDst = ::GpiCreatePS(vHabmain, hDCDst, &vSize, PU_PELS | GPIA_ASSOC);
1353
1354 if (m_hMaskBitmap)
1355 {
1356 ::GpiDeleteBitmap((HBITMAP) m_hMaskBitmap);
1357 m_hMaskBitmap = 0;
1358 }
1359 if (!rBitmap.Ok())
1360 {
1361 return false;
1362 }
1363
1364 //
1365 // Scan the bitmap for the transparent colour and set
1366 // the corresponding pixels in the mask to BLACK and
1367 // the rest to WHITE
1368 //
1369
1370 memset(&vBmih, '\0', sizeof(BITMAPINFOHEADER2));
1371 vBmih.cbFix = sizeof(BITMAPINFOHEADER2);
1372 vBmih.cx = rBitmap.GetWidth();
1373 vBmih.cy = rBitmap.GetHeight();
1374 vBmih.cPlanes = 1;
1375 vBmih.cBitCount = 1;
1376
1377 m_hMaskBitmap = ::GpiCreateBitmap( hPSDst
1378 ,&vBmih
1379 ,0L
1380 ,NULL
1381 ,NULL
1382 );
1383
1384 ::GpiSetBitmap(hPSSrc, (HBITMAP) rBitmap.GetHBITMAP());
1385 ::GpiSetBitmap(hPSDst, (HBITMAP) m_hMaskBitmap);
1386
1387 //
1388 // This is not very efficient, but I can't think
1389 // of a better way of doing it
1390 //
1391 for (int w = 0; w < rBitmap.GetWidth(); w++)
1392 {
1393 for (int h = 0; h < rBitmap.GetHeight(); h++)
1394 {
1395 POINTL vPt = {w, h};
1396 COLORREF vCol = (COLORREF)::GpiQueryPel(hPSSrc, &vPt);
1397 if (vCol == (COLORREF)CLR_NOINDEX)
1398 {
1399 //
1400 // Doesn't make sense to continue
1401 //
1402 bOk = false;
1403 break;
1404 }
1405
1406 if (vCol == vMaskColour)
1407 {
1408 ::GpiSetColor(hPSDst, OS2RGB(0, 0, 0));
1409 ::GpiSetPel(hPSDst, &vPt);
1410 }
1411 else
1412 {
1413 ::GpiSetColor(hPSDst, OS2RGB(255, 255, 255));
1414 ::GpiSetPel(hPSDst, &vPt);
1415 }
1416 }
1417 }
1418 ::GpiSetBitmap(hPSSrc, NULL);
1419 ::GpiSetBitmap(hPSDst, NULL);
1420 ::GpiDestroyPS(hPSSrc);
1421 ::GpiDestroyPS(hPSDst);
1422 ::DevCloseDC(hDCSrc);
1423 ::DevCloseDC(hDCDst);
1424 return true;
1425 } // end of wxMask::Create
1426
1427 // ----------------------------------------------------------------------------
1428 // wxBitmapHandler
1429 // ----------------------------------------------------------------------------
1430
1431 bool wxBitmapHandler::Create( wxGDIImage* pImage,
1432 const void* pData,
1433 long WXUNUSED(lFlags),
1434 int nWidth,
1435 int nHeight,
1436 int nDepth)
1437 {
1438 wxBitmap* pBitmap = wxDynamicCast( pImage
1439 ,wxBitmap
1440 );
1441
1442 return(pBitmap ? Create( pBitmap
1443 ,pData
1444 ,nWidth
1445 ,nHeight
1446 ,nDepth
1447 ) : false);
1448 }
1449
1450 bool wxBitmapHandler::Load(
1451 wxGDIImage* pImage
1452 , int nId
1453 , long lFlags
1454 , int nWidth
1455 , int nHeight
1456 )
1457 {
1458 wxBitmap* pBitmap = wxDynamicCast( pImage
1459 ,wxBitmap
1460 );
1461
1462 return(pBitmap ? LoadFile( pBitmap
1463 ,nId
1464 ,lFlags
1465 ,nWidth
1466 ,nHeight
1467 ) : false);
1468 }
1469
1470 bool wxBitmapHandler::Save(
1471 wxGDIImage* pImage
1472 , const wxString& rName
1473 , int lType
1474 )
1475 {
1476 wxBitmap* pBitmap = wxDynamicCast( pImage
1477 ,wxBitmap
1478 );
1479
1480 return(pBitmap ? SaveFile( pBitmap
1481 ,rName
1482 ,lType
1483 ) : false);
1484 }
1485
1486 bool wxBitmapHandler::Create(
1487 wxBitmap* WXUNUSED(pBitmap)
1488 , const void* WXUNUSED(pData)
1489 , long WXUNUSED(lType)
1490 , int WXUNUSED(nWidth)
1491 , int WXUNUSED(nHeight)
1492 , int WXUNUSED(nDepth)
1493 )
1494 {
1495 return false;
1496 }
1497
1498 bool wxBitmapHandler::LoadFile(
1499 wxBitmap* WXUNUSED(pBitmap)
1500 , int WXUNUSED(nId)
1501 , long WXUNUSED(lType)
1502 , int WXUNUSED(nDesiredWidth)
1503 , int WXUNUSED(nDesiredHeight)
1504 )
1505 {
1506 return false;
1507 }
1508
1509 bool wxBitmapHandler::LoadFile(
1510 wxBitmap* WXUNUSED(pBitmap)
1511 , const wxString& WXUNUSED(rName)
1512 , long WXUNUSED(lType)
1513 , int WXUNUSED(nDesiredWidth)
1514 , int WXUNUSED(nDesiredHeight)
1515 )
1516 {
1517 return false;
1518 }
1519
1520 bool wxBitmapHandler::SaveFile(
1521 wxBitmap* WXUNUSED(pBitmap)
1522 , const wxString& WXUNUSED(rName)
1523 , int WXUNUSED(nType)
1524 , const wxPalette* WXUNUSED(pPalette)
1525 )
1526 {
1527 return false;
1528 }
1529
1530 // ----------------------------------------------------------------------------
1531 // Utility functions
1532 // ----------------------------------------------------------------------------
1533 HBITMAP wxInvertMask(
1534 HBITMAP hBmpMask
1535 , int nWidth
1536 , int nHeight
1537 )
1538 {
1539 HBITMAP hBmpInvMask = 0;
1540
1541 wxCHECK_MSG( hBmpMask, 0, _T("invalid bitmap in wxInvertMask") );
1542
1543 //
1544 // Get width/height from the bitmap if not given
1545 //
1546 if (!nWidth || !nHeight)
1547 {
1548 BITMAPINFOHEADER2 vBmhdr;
1549
1550 ::GpiQueryBitmapInfoHeader( hBmpMask
1551 ,&vBmhdr
1552 );
1553 nWidth = (int)vBmhdr.cx;
1554 nHeight = (int)vBmhdr.cy;
1555 }
1556
1557 BITMAPINFOHEADER2 vBmih;
1558 SIZEL vSize = {0, 0};
1559 DEVOPENSTRUC vDop = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
1560 HDC hDCSrc = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1561 HDC hDCDst = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1562 HPS hPSSrc = ::GpiCreatePS(vHabmain, hDCSrc, &vSize, PU_PELS | GPIA_ASSOC);
1563 HPS hPSDst = ::GpiCreatePS(vHabmain, hDCDst, &vSize, PU_PELS | GPIA_ASSOC);
1564 POINTL vPoint[4] = { {0 ,0}, {nWidth, nHeight},
1565 {0, 0}, {nWidth, nHeight}
1566 };
1567
1568 memset(&vBmih, '\0', 16);
1569 vBmih.cbFix = 16;
1570 vBmih.cx = nWidth;
1571 vBmih.cy = nHeight;
1572 vBmih.cPlanes = 1;
1573 vBmih.cBitCount = 24;
1574
1575 hBmpInvMask = ::GpiCreateBitmap( hPSDst
1576 ,&vBmih
1577 ,0L
1578 ,NULL
1579 ,NULL
1580 );
1581
1582 ::GpiSetBitmap(hPSSrc, (HBITMAP) hBmpMask);
1583 ::GpiSetBitmap(hPSDst, (HBITMAP) hBmpInvMask);
1584
1585 ::GpiBitBlt( hPSDst
1586 ,hPSSrc
1587 ,4L
1588 ,vPoint
1589 ,ROP_SRCINVERT
1590 ,BBO_IGNORE
1591 );
1592
1593 ::GpiDestroyPS(hPSSrc);
1594 ::GpiDestroyPS(hPSDst);
1595 ::DevCloseDC(hDCSrc);
1596 ::DevCloseDC(hDCDst);
1597
1598 return hBmpInvMask;
1599 } // end of WxWinGdi_InvertMask
1600
1601 HBITMAP wxFlipBmp( HBITMAP hBmp, int nWidth, int nHeight )
1602 {
1603 wxCHECK_MSG( hBmp, 0, _T("invalid bitmap in wxFlipBmp") );
1604
1605 //
1606 // Get width/height from the bitmap if not given
1607 //
1608 if (!nWidth || !nHeight)
1609 {
1610 BITMAPINFOHEADER2 vBmhdr;
1611
1612 vBmhdr.cbFix = 16;
1613 ::GpiQueryBitmapInfoHeader( hBmp,
1614 &vBmhdr );
1615 nWidth = (int)vBmhdr.cx;
1616 nHeight = (int)vBmhdr.cy;
1617 }
1618
1619 BITMAPINFOHEADER2 vBmih;
1620 SIZEL vSize = {0, 0};
1621 DEVOPENSTRUC vDop = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
1622 HDC hDCSrc = ::DevOpenDC( vHabmain,
1623 OD_MEMORY,
1624 "*",
1625 5L,
1626 (PDEVOPENDATA)&vDop,
1627 NULLHANDLE );
1628 HDC hDCDst = ::DevOpenDC( vHabmain,
1629 OD_MEMORY,
1630 "*",
1631 5L,
1632 (PDEVOPENDATA)&vDop,
1633 NULLHANDLE );
1634 HPS hPSSrc = ::GpiCreatePS( vHabmain,
1635 hDCSrc,
1636 &vSize,
1637 PU_PELS | GPIA_ASSOC );
1638 HPS hPSDst = ::GpiCreatePS( vHabmain,
1639 hDCDst,
1640 &vSize,
1641 PU_PELS | GPIA_ASSOC );
1642 POINTL vPoint[4] = { {0, nHeight},
1643 {nWidth, 0},
1644 {0, 0},
1645 {nWidth, nHeight} };
1646
1647 memset(&vBmih, '\0', 16);
1648 vBmih.cbFix = 16;
1649 vBmih.cx = nWidth;
1650 vBmih.cy = nHeight;
1651 vBmih.cPlanes = 1;
1652 vBmih.cBitCount = 24;
1653
1654 HBITMAP hInvBmp = ::GpiCreateBitmap( hPSDst,
1655 &vBmih,
1656 0L,
1657 NULL,
1658 NULL );
1659
1660 ::GpiSetBitmap(hPSSrc, (HBITMAP) hBmp);
1661 ::GpiSetBitmap(hPSDst, (HBITMAP) hInvBmp);
1662
1663 ::GpiBitBlt( hPSDst,
1664 hPSSrc,
1665 4L,
1666 vPoint,
1667 ROP_SRCCOPY,
1668 BBO_IGNORE );
1669
1670 ::GpiDestroyPS(hPSSrc);
1671 ::GpiDestroyPS(hPSDst);
1672 ::DevCloseDC(hDCSrc);
1673 ::DevCloseDC(hDCDst);
1674
1675 return hInvBmp;
1676 } // end of wxFlipBmp
wxWidgets (Impactor)