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[wxWidgets.git] / src / os2 / dc.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/os2/dc.cpp
3 // Purpose: wxDC class
4 // Author: David Webster
5 // Modified by:
6 // Created: 10/14/99
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 #ifndef WX_PRECOMP
16 #include "wx/window.h"
17 #include "wx/dc.h"
18 #include "wx/utils.h"
19 #include "wx/dialog.h"
20 #include "wx/app.h"
21 #include "wx/bitmap.h"
22 #include "wx/dcmemory.h"
23 #include "wx/log.h"
24 #include "wx/icon.h"
25 #include "wx/msgdlg.h"
26 #include "wx/dcprint.h"
27 #include "wx/statusbr.h"
28 #include "wx/module.h"
29 #endif
30
31 #include <string.h>
32
33 #include "wx/os2/private.h"
34
35 IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject)
36
37 //
38 // wxWidgets uses the Microsoft convention that the origin is the UPPER left.
39 // Native OS/2 however in the GPI and PM define the origin as the LOWER left.
40 // In order to map OS/2 GPI/PM y coordinates to wxWidgets coordinates we must
41 // perform the following transformation:
42 //
43 // Parent object height: POBJHEIGHT
44 // Desried origin: WXORIGINY
45 // Object to place's height: OBJHEIGHT
46 //
47 // To get the OS2 position from the wxWidgets one:
48 //
49 // OS2Y = POBJHEIGHT - (WXORIGINY + OBJHEIGHT)
50 //
51 // For OS/2 wxDC's we will always determine m_vRclPaint as the size of the
52 // OS/2 Presentation Space associated with the device context. y is the
53 // desired application's y coordinate of the origin in wxWidgets space.
54 // objy is the height of the object we are going to draw.
55 //
56 #define OS2Y(y, objy) ((m_vRclPaint.yTop - m_vRclPaint.yBottom) - (y + objy))
57
58 // ---------------------------------------------------------------------------
59 // constants
60 // ---------------------------------------------------------------------------
61
62 static const int VIEWPORT_EXTENT = 1000;
63
64 static const int MM_POINTS = 9;
65 static const int MM_METRIC = 10;
66
67 // ---------------------------------------------------------------------------
68 // private functions
69 // ---------------------------------------------------------------------------
70
71 // convert degrees to radians
72 static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
73
74 int SetTextColor(
75 HPS hPS
76 , int nForegroundColour
77 )
78 {
79 CHARBUNDLE vCbnd;
80
81 vCbnd.lColor = nForegroundColour;
82 ::GpiSetAttrs( hPS // presentation-space handle
83 ,PRIM_CHAR // Char primitive.
84 ,CBB_COLOR // sets color.
85 ,0 //
86 ,&vCbnd // buffer for attributes.
87 );
88 return 0;
89 }
90
91 int QueryTextBkColor(
92 HPS hPS
93 )
94 {
95 CHARBUNDLE vCbnd;
96
97 ::GpiQueryAttrs( hPS // presentation-space handle
98 ,PRIM_CHAR // Char primitive.
99 ,CBB_BACK_COLOR // Background color.
100 ,&vCbnd // buffer for attributes.
101 );
102 return vCbnd.lBackColor;
103 }
104
105
106 int SetTextBkColor(
107 HPS hPS
108 , int nBackgroundColour
109 )
110 {
111 CHARBUNDLE vCbnd;
112 int rc;
113
114 rc = QueryTextBkColor(hPS);
115
116 vCbnd.lBackColor = nBackgroundColour;
117 ::GpiSetAttrs(hPS, // presentation-space handle
118 PRIM_CHAR, // Char primitive.
119 CBB_BACK_COLOR, // sets color.
120 0,
121 &vCbnd // buffer for attributes.
122 );
123 return rc;
124 }
125
126 int SetBkMode(
127 HPS hPS
128 , int nBackgroundMode
129 )
130 {
131 if(nBackgroundMode == wxTRANSPARENT)
132 ::GpiSetBackMix( hPS
133 ,BM_LEAVEALONE
134 );
135 else
136 // the background of the primitive takes over whatever is underneath.
137 ::GpiSetBackMix( hPS
138 ,BM_OVERPAINT
139 );
140 return 0;
141 }
142
143 // ===========================================================================
144 // implementation
145 // ===========================================================================
146
147 #if wxUSE_DC_CACHEING
148
149 /*
150 * This implementation is a bit ugly and uses the old-fashioned wxList class, so I will
151 * improve it in due course, either using arrays, or simply storing pointers to one
152 * entry for the bitmap, and two for the DCs. -- JACS
153 */
154
155 // ---------------------------------------------------------------------------
156 // wxDCCacheEntry
157 // ---------------------------------------------------------------------------
158
159 wxList wxDC::m_svBitmapCache;
160 wxList wxDC::m_svDCCache;
161
162 wxDCCacheEntry::wxDCCacheEntry(
163 WXHBITMAP hBitmap
164 , int nWidth
165 , int nHeight
166 , int nDepth
167 )
168 {
169 m_hBitmap = hBitmap;
170 m_hPS = NULLHANDLE;
171 m_nWidth = nWidth;
172 m_nHeight = nHeight;
173 m_nDepth = nDepth;
174 } // end of wxDCCacheEntry::wxDCCacheEntry
175
176 wxDCCacheEntry::wxDCCacheEntry(
177 HPS hPS
178 , int nDepth
179 )
180 {
181 m_hBitmap = NULLHANDLE;
182 m_hPS = hPS;
183 m_nWidth = 0;
184 m_nHeight = 0;
185 m_nDepth = nDepth;
186 } // end of wxDCCacheEntry::wxDCCacheEntry
187
188 wxDCCacheEntry::~wxDCCacheEntry()
189 {
190 if (m_hBitmap)
191 ::GpiDeleteBitmap(m_hBitmap);
192 if (m_hPS)
193 ::GpiDestroyPS(m_hPS);
194 } // end of wxDCCacheEntry::~wxDCCacheEntry
195
196 wxDCCacheEntry* wxDC::FindBitmapInCache(
197 HPS hPS
198 , int nWidth
199 , int nHeight
200 )
201 {
202 int nDepth = 24; // we'll fix this later ::GetDeviceCaps((HDC) dc, PLANES) * ::GetDeviceCaps((HDC) dc, BITSPIXEL);
203 wxNode* pNode = m_svBitmapCache.First();
204 BITMAPINFOHEADER2 vBmpHdr;
205
206 while(pNode)
207 {
208 wxDCCacheEntry* pEntry = (wxDCCacheEntry*)pNode->Data();
209
210 if (pEntry->m_nDepth == nDepth)
211 {
212 memset(&vBmpHdr, 0, sizeof(BITMAPINFOHEADER2));
213
214 if (pEntry->m_nWidth < nWidth || pEntry->m_nHeight < nHeight)
215 {
216 ::GpiDeleteBitmap((HBITMAP)pEntry->m_hBitmap);
217 vBmpHdr.cbFix = sizeof(BITMAPINFOHEADER2);
218 vBmpHdr.cx = nWidth;
219 vBmpHdr.cy = nHeight;
220 vBmpHdr.cPlanes = 1;
221 vBmpHdr.cBitCount = (USHORT)nDepth;
222
223 pEntry->m_hBitmap = (WXHBITMAP) ::GpiCreateBitmap( hPS
224 ,&vBmpHdr
225 ,0L, NULL, NULL
226 );
227 if (!pEntry->m_hBitmap)
228 {
229 wxLogLastError(wxT("CreateCompatibleBitmap"));
230 }
231 pEntry->m_nWidth = nWidth;
232 pEntry->m_nHeight = nHeight;
233 return pEntry;
234 }
235 return pEntry;
236 }
237 pNode = pNode->Next();
238 }
239 memset(&vBmpHdr, 0, sizeof(BITMAPINFOHEADER2));
240 vBmpHdr.cbFix = sizeof(BITMAPINFOHEADER2);
241 vBmpHdr.cx = nWidth;
242 vBmpHdr.cy = nHeight;
243 vBmpHdr.cPlanes = 1;
244 vBmpHdr.cBitCount = (USHORT)nDepth;
245
246 WXHBITMAP hBitmap = (WXHBITMAP) ::GpiCreateBitmap( hPS
247 ,&vBmpHdr
248 ,0L, NULL, NULL
249 );
250 if (!hBitmap)
251 {
252 wxLogLastError(wxT("CreateCompatibleBitmap"));
253 }
254 wxDCCacheEntry* pEntry = new wxDCCacheEntry( hBitmap
255 ,nWidth
256 ,nHeight
257 ,nDepth
258 );
259 AddToBitmapCache(pEntry);
260 return pEntry;
261 } // end of FindBitmapInCache
262
263 wxDCCacheEntry* wxDC::FindDCInCache(
264 wxDCCacheEntry* pNotThis
265 , HPS hPS
266 )
267 {
268 int nDepth = 24; // we'll fix this up later ::GetDeviceCaps((HDC) dc, PLANES) * ::GetDeviceCaps((HDC) dc, BITSPIXEL);
269 wxNode* pNode = m_svDCCache.First();
270
271 while(pNode)
272 {
273 wxDCCacheEntry* pEntry = (wxDCCacheEntry*)pNode->Data();
274
275 //
276 // Don't return the same one as we already have
277 //
278 if (!pNotThis || (pNotThis != pEntry))
279 {
280 if (pEntry->m_nDepth == nDepth)
281 {
282 return pEntry;
283 }
284 }
285 pNode = pNode->Next();
286 }
287 wxDCCacheEntry* pEntry = new wxDCCacheEntry( hPS
288 ,nDepth
289 );
290 AddToDCCache(pEntry);
291 return pEntry;
292 } // end of wxDC::FindDCInCache
293
294 void wxDC::AddToBitmapCache(
295 wxDCCacheEntry* pEntry
296 )
297 {
298 m_svBitmapCache.Append(pEntry);
299 } // end of wxDC::AddToBitmapCache
300
301 void wxDC::AddToDCCache(
302 wxDCCacheEntry* pEntry
303 )
304 {
305 m_svDCCache.Append(pEntry);
306 } // end of wxDC::AddToDCCache
307
308 void wxDC::ClearCache()
309 {
310 m_svBitmapCache.DeleteContents(true);
311 m_svBitmapCache.Clear();
312 m_svBitmapCache.DeleteContents(false);
313 m_svDCCache.DeleteContents(true);
314 m_svDCCache.Clear();
315 m_svDCCache.DeleteContents(false);
316 } // end of wxDC::ClearCache
317
318 // Clean up cache at app exit
319 class wxDCModule : public wxModule
320 {
321 public:
322 virtual bool OnInit() { return true; }
323 virtual void OnExit() { wxDC::ClearCache(); }
324
325 private:
326 DECLARE_DYNAMIC_CLASS(wxDCModule)
327 }; // end of CLASS wxDCModule
328
329 IMPLEMENT_DYNAMIC_CLASS(wxDCModule, wxModule)
330
331 #endif // ndef for wxUSE_DC_CACHEING
332
333 // ---------------------------------------------------------------------------
334 // wxDC
335 // ---------------------------------------------------------------------------
336
337 wxDC::wxDC(void)
338 {
339 m_pCanvas = NULL;
340
341 m_hOldBitmap = 0;
342 m_hOldPen = 0;
343 m_hOldBrush = 0;
344 m_hOldFont = 0;
345 m_hOldPalette = 0;
346
347 m_bOwnsDC = false;
348 m_hDC = 0;
349 m_hOldPS = NULL;
350 m_hPS = NULL;
351 m_bIsPaintTime = false; // True at Paint Time
352
353 m_pen.SetColour(*wxBLACK);
354 m_brush.SetColour(*wxWHITE);
355
356 } // end of wxDC::wxDC
357
358 wxDC::~wxDC(void)
359 {
360 if ( m_hDC != 0 )
361 {
362 SelectOldObjects(m_hDC);
363
364 // if we own the HDC, we delete it, otherwise we just release it
365
366 if (m_bOwnsDC)
367 {
368 if(m_hPS)
369 {
370 ::GpiAssociate(m_hPS, NULLHANDLE);
371 ::GpiDestroyPS(m_hPS);
372 }
373 m_hPS = NULLHANDLE;
374 ::DevCloseDC((HDC)m_hDC);
375 }
376 else
377 {
378 //
379 // Just Dissacociate, not destroy if we don't own the DC
380 //
381 if(m_hPS)
382 {
383 ::GpiAssociate(m_hPS, NULLHANDLE);
384 }
385 }
386 }
387 } // end of wxDC::~wxDC
388
389 // This will select current objects out of the DC,
390 // which is what you have to do before deleting the
391 // DC.
392 void wxDC::SelectOldObjects(
393 WXHDC hPS
394 )
395 {
396 if (hPS)
397 {
398 if (m_hOldBitmap)
399 {
400 ::GpiSetBitmap(hPS, (HBITMAP) m_hOldBitmap);
401 if (m_vSelectedBitmap.Ok())
402 {
403 m_vSelectedBitmap.SetSelectedInto(NULL);
404 }
405 }
406 m_hOldBitmap = 0;
407 //
408 // OS/2 has no other native GDI objects to set in a PS/DC like windows
409 //
410 m_hOldPen = 0;
411 m_hOldBrush = 0;
412 m_hOldFont = 0;
413 m_hOldPalette = 0;
414 }
415
416 m_brush = wxNullBrush;
417 m_pen = wxNullPen;
418 m_palette = wxNullPalette;
419 m_font = wxNullFont;
420 m_backgroundBrush = wxNullBrush;
421 m_vSelectedBitmap = wxNullBitmap;
422 } // end of wxDC::SelectOldObjects
423
424 // ---------------------------------------------------------------------------
425 // clipping
426 // ---------------------------------------------------------------------------
427
428 #define DO_SET_CLIPPING_BOX() \
429 { \
430 RECTL rect; \
431 \
432 ::GpiQueryClipBox(m_hPS, &rect); \
433 \
434 m_clipX1 = (wxCoord) XDEV2LOG(rect.xLeft); \
435 m_clipY1 = (wxCoord) YDEV2LOG(rect.yTop); \
436 m_clipX2 = (wxCoord) XDEV2LOG(rect.xRight); \
437 m_clipY2 = (wxCoord) YDEV2LOG(rect.yBottom); \
438 }
439
440 void wxDC::DoSetClippingRegion(
441 wxCoord vX
442 , wxCoord vY
443 , wxCoord vWidth
444 , wxCoord vHeight
445 )
446 {
447 RECTL vRect;
448
449 vY = OS2Y(vY,vHeight);
450 m_clipping = true;
451 vRect.xLeft = vX;
452 vRect.yTop = vY + vHeight;
453 vRect.xRight = vX + vWidth;
454 vRect.yBottom = vY;
455 ::GpiIntersectClipRectangle(m_hPS, &vRect);
456 DO_SET_CLIPPING_BOX()
457 } // end of wxDC::DoSetClippingRegion
458
459 void wxDC::DoSetClippingRegionAsRegion(
460 const wxRegion& rRegion
461 )
462 {
463 wxCHECK_RET(rRegion.GetHRGN(), wxT("invalid clipping region"));
464 HRGN hRgnOld;
465
466 m_clipping = true;
467 ::GpiSetClipRegion( m_hPS
468 ,(HRGN)rRegion.GetHRGN()
469 ,&hRgnOld
470 );
471 DO_SET_CLIPPING_BOX()
472 } // end of wxDC::DoSetClippingRegionAsRegion
473
474 void wxDC::DestroyClippingRegion(void)
475 {
476 if (m_clipping && m_hPS)
477 {
478 HRGN hRgnOld;
479 RECTL vRect;
480
481 // TODO: this should restore the previous clipped region
482 // so that OnPaint processing works correctly, and
483 // the update doesn't get destroyed after the first
484 // DestroyClippingRegion
485 vRect.xLeft = XLOG2DEV(0);
486 vRect.yTop = YLOG2DEV(32000);
487 vRect.xRight = XLOG2DEV(32000);
488 vRect.yBottom = YLOG2DEV(0);
489
490 HRGN hRgn = ::GpiCreateRegion(m_hPS, 1, &vRect);
491
492 ::GpiSetClipRegion(m_hPS, hRgn, &hRgnOld);
493 }
494 ResetClipping();
495 } // end of wxDC::DestroyClippingRegion
496
497 // ---------------------------------------------------------------------------
498 // query capabilities
499 // ---------------------------------------------------------------------------
500
501 bool wxDC::CanDrawBitmap() const
502 {
503 return true;
504 }
505
506 bool wxDC::CanGetTextExtent() const
507 {
508 LONG lTechnology = 0L;
509
510 ::DevQueryCaps(GetHDC(), CAPS_TECHNOLOGY, 1L, &lTechnology);
511 return (lTechnology == CAPS_TECH_RASTER_DISPLAY) || (lTechnology == CAPS_TECH_RASTER_PRINTER);
512 } // end of wxDC::CanGetTextExtent
513
514 int wxDC::GetDepth() const
515 {
516 LONG lArray[CAPS_COLOR_BITCOUNT];
517 int nBitsPerPixel = 0;
518
519 if(::DevQueryCaps( GetHDC()
520 ,CAPS_FAMILY
521 ,CAPS_COLOR_BITCOUNT
522 ,lArray
523 ))
524 {
525 nBitsPerPixel = (int)lArray[CAPS_COLOR_BITCOUNT];
526 }
527 return nBitsPerPixel;
528 } // end of wxDC::GetDepth
529
530 // ---------------------------------------------------------------------------
531 // drawing
532 // ---------------------------------------------------------------------------
533
534 void wxDC::Clear()
535 {
536 //
537 // If this is a canvas DC then just fill with the background color
538 // Otherwise purge the whole thing
539 //
540 if (m_pCanvas)
541 {
542 RECTL vRect;
543
544 ::GpiQueryClipBox(m_hPS, &vRect);
545 ::WinFillRect(m_hPS, &vRect, ::GpiQueryBackColor(m_hPS));
546 }
547 else
548 ::GpiErase(m_hPS);
549 } // end of wxDC::Clear
550
551 bool wxDC::DoFloodFill(
552 wxCoord vX
553 , wxCoord vY
554 , const wxColour& rCol
555 , int nStyle
556 )
557 {
558 POINTL vPtlPos;
559 LONG lColor;
560 LONG lOptions;
561 LONG lHits;
562 bool bSuccess = false;
563
564 vPtlPos.x = vX; // Loads x-coordinate
565 vPtlPos.y = OS2Y(vY,0); // Loads y-coordinate
566 ::GpiMove(m_hPS, &vPtlPos); // Sets current position
567 lColor = rCol.GetPixel();
568 lOptions = FF_BOUNDARY;
569 if(wxFLOOD_SURFACE == nStyle)
570 lOptions = FF_SURFACE;
571
572 if ((lHits = ::GpiFloodFill(m_hPS, lOptions, lColor)) != GPI_ERROR)
573 bSuccess = true;
574
575 return bSuccess;
576 } // end of wxDC::DoFloodFill
577
578 bool wxDC::DoGetPixel(
579 wxCoord vX
580 , wxCoord vY
581 , wxColour* pCol
582 ) const
583 {
584 POINTL vPoint;
585 LONG lColor;
586
587 vPoint.x = vX;
588 vPoint.y = OS2Y(vY,0);
589 lColor = ::GpiQueryPel(m_hPS, &vPoint);
590
591 //
592 // return the color of the pixel
593 //
594 if(pCol)
595 pCol->Set( GetRValue(lColor)
596 ,GetGValue(lColor)
597 ,GetBValue(lColor)
598 );
599 return true;
600 } // end of wxDC::DoGetPixel
601
602 void wxDC::DoCrossHair(
603 wxCoord vX
604 , wxCoord vY
605 )
606 {
607 vY = OS2Y(vY,0);
608
609 wxCoord vX1 = vX - VIEWPORT_EXTENT;
610 wxCoord vY1 = vY - VIEWPORT_EXTENT;
611 wxCoord vX2 = vX + VIEWPORT_EXTENT;
612 wxCoord vY2 = vY + VIEWPORT_EXTENT;
613 POINTL vPoint[4];
614
615 vPoint[0].x = vX1;
616 vPoint[0].y = vY;
617
618 vPoint[1].x = vX2;
619 vPoint[1].y = vY;
620
621 ::GpiMove(m_hPS, &vPoint[0]);
622 ::GpiLine(m_hPS, &vPoint[1]);
623
624 vPoint[2].x = vX;
625 vPoint[2].y = vY1;
626
627 vPoint[3].x = vX;
628 vPoint[3].y = vY2;
629
630 ::GpiMove(m_hPS, &vPoint[2]);
631 ::GpiLine(m_hPS, &vPoint[3]);
632 CalcBoundingBox(vX1, vY1);
633 CalcBoundingBox(vX2, vY2);
634 } // end of wxDC::DoCrossHair
635
636 void wxDC::DoDrawLine(
637 wxCoord vX1
638 , wxCoord vY1
639 , wxCoord vX2
640 , wxCoord vY2
641 )
642 {
643 POINTL vPoint[2];
644 COLORREF vColor = 0x00ffffff;
645
646 //
647 // Might be a memory DC with no Paint rect.
648 //
649 if (!(m_vRclPaint.yTop == 0 &&
650 m_vRclPaint.yBottom == 0 &&
651 m_vRclPaint.xRight == 0 &&
652 m_vRclPaint.xLeft == 0))
653 {
654 vY1 = OS2Y(vY1,0);
655 vY2 = OS2Y(vY2,0);
656 }
657 else
658 {
659 if (m_vSelectedBitmap.Ok())
660 {
661 m_vRclPaint.yTop = m_vSelectedBitmap.GetHeight();
662 m_vRclPaint.xRight = m_vSelectedBitmap.GetWidth();
663 vY1 = OS2Y(vY1,0);
664 vY2 = OS2Y(vY2,0);
665 }
666 }
667 vPoint[0].x = vX1;
668 vPoint[0].y = vY1;
669 vPoint[1].x = vX2;
670 vPoint[1].y = vY2;
671 if (m_pen.Ok())
672 {
673 vColor = m_pen.GetColour().GetPixel();
674 }
675 ::GpiSetColor(m_hPS, vColor);
676 ::GpiMove(m_hPS, &vPoint[0]);
677 ::GpiLine(m_hPS, &vPoint[1]);
678 CalcBoundingBox(vX1, vY1);
679 CalcBoundingBox(vX2, vY2);
680 } // end of wxDC::DoDrawLine
681
682 //////////////////////////////////////////////////////////////////////////////
683 // Draws an arc of a circle, centred on (xc, yc), with starting point (x1, y1)
684 // and ending at (x2, y2). The current pen is used for the outline and the
685 // current brush for filling the shape. The arc is drawn in an anticlockwise
686 // direction from the start point to the end point.
687 //////////////////////////////////////////////////////////////////////////////
688 void wxDC::DoDrawArc(
689 wxCoord vX1
690 , wxCoord vY1
691 , wxCoord vX2
692 , wxCoord vY2
693 , wxCoord vXc
694 , wxCoord vYc
695 )
696 {
697 POINTL vPtlPos;
698 POINTL vPtlArc[2]; // Structure for current position
699 double dRadius;
700 double dAngl1;
701 double dAngl2;
702 double dAnglmid;
703 wxCoord vXm;
704 wxCoord vYm;
705 ARCPARAMS vArcp; // Structure for arc parameters
706
707 if((vX1 == vXc && vY1 == vXc) || (vX2 == vXc && vY2 == vXc))
708 return; // Draw point ??
709 dRadius = 0.5 * ( hypot( (double)(vY1 - vYc)
710 ,(double)(vX1 - vXc)
711 ) +
712 hypot( (double)(vY2 - vYc)
713 ,(double)(vX2 - vXc)
714 )
715 );
716
717 dAngl1 = atan2( (double)(vY1 - vYc)
718 ,(double)(vX1 - vXc)
719 );
720 dAngl2 = atan2( (double)(vY2 - vYc)
721 ,(double)(vX2 - vXc)
722 );
723 if(dAngl2 < dAngl1)
724 dAngl2 += M_PI * 2;
725
726 //
727 // GpiPointArc can't draw full arc
728 //
729 if(dAngl2 == dAngl1 || (vX1 == vX2 && vY1 == vY2) )
730 {
731 //
732 // Medium point
733 //
734 dAnglmid = (dAngl1 + dAngl2)/2. + M_PI;
735 vXm = (wxCoord)(vXc + dRadius * cos(dAnglmid));
736 vYm = (wxCoord)(vYc + dRadius * sin(dAnglmid));
737 DoDrawArc( vX1, vY1
738 ,vXm, vYm
739 ,vXc, vYc
740 );
741 DoDrawArc( vXm, vYm
742 ,vX2, vY2
743 ,vXc, vYc
744 );
745 return;
746 }
747
748 //
749 // Medium point
750 //
751 dAnglmid = (dAngl1 + dAngl2)/2.;
752 vXm = (wxCoord)(vXc + dRadius * cos(dAnglmid));
753 vYm = (wxCoord)(vYc + dRadius * sin(dAnglmid));
754
755 //
756 // Ellipse main axis (r,q), (p,s) with center at (0,0) */
757 //
758 vArcp.lR = 0;
759 vArcp.lQ = 1;
760 vArcp.lP = 1;
761 vArcp.lS = 0;
762 ::GpiSetArcParams(m_hPS, &vArcp); // Sets parameters to default
763
764 vPtlPos.x = vX1; // Loads x-coordinate
765 vPtlPos.y = vY1; // Loads y-coordinate
766 ::GpiMove(m_hPS, &vPtlPos); // Sets current position
767 vPtlArc[0].x = vXm;
768 vPtlArc[0].y = vYm;
769 vPtlArc[1].x = vX2;
770 vPtlArc[1].y = vY2;
771 ::GpiPointArc(m_hPS, vPtlArc); // Draws the arc
772 CalcBoundingBox( (wxCoord)(vXc - dRadius)
773 ,(wxCoord)(vYc - dRadius)
774 );
775 CalcBoundingBox( (wxCoord)(vXc + dRadius)
776 ,(wxCoord)(vYc + dRadius)
777 );
778 } // end of wxDC::DoDrawArc
779
780 void wxDC::DoDrawCheckMark(
781 wxCoord vX1
782 , wxCoord vY1
783 , wxCoord vWidth
784 , wxCoord vHeight
785 )
786 {
787 POINTL vPoint[2];
788
789 vY1 = OS2Y(vY1,vHeight);
790
791 vPoint[0].x = vX1;
792 vPoint[0].y = vY1;
793 vPoint[1].x = vX1 + vWidth;
794 vPoint[1].y = vY1 + vHeight;
795
796 ::GpiMove(m_hPS, &vPoint[0]);
797 ::GpiBox( m_hPS // handle to a presentation space
798 ,DRO_OUTLINE // draw the box outline ? or ?
799 ,&vPoint[1] // address of the corner
800 ,0L // horizontal corner radius
801 ,0L // vertical corner radius
802 );
803 if(vWidth > 4 && vHeight > 4)
804 {
805 int nTmp;
806
807 vPoint[0].x += 2; vPoint[0].y += 2;
808 vPoint[1].x -= 2; vPoint[1].y -= 2;
809 ::GpiMove(m_hPS, &vPoint[0]);
810 ::GpiLine(m_hPS, &vPoint[1]);
811 nTmp = vPoint[0].x;
812 vPoint[0].x = vPoint[1].x;
813 vPoint[1].x = nTmp;
814 ::GpiMove(m_hPS, &vPoint[0]);
815 ::GpiLine(m_hPS, &vPoint[1]);
816 }
817 CalcBoundingBox( vX1
818 ,vY1
819 );
820
821 wxCoord vX2 = vX1 + vWidth;
822 wxCoord vY2 = vY1 + vHeight;
823
824 CalcBoundingBox( vX2
825 ,vY2
826 );
827 } // end of wxDC::DoDrawCheckMark
828
829 void wxDC::DoDrawPoint(
830 wxCoord vX
831 , wxCoord vY
832 )
833 {
834 POINTL vPoint;
835 COLORREF vColor = 0x00ffffff;
836
837 if (m_pen.Ok())
838 {
839 vColor = m_pen.GetColour().GetPixel();
840 }
841 ::GpiSetColor(m_hPS, vColor);
842 vPoint.x = vX;
843 vPoint.y = OS2Y(vY,0);
844 ::GpiSetPel(m_hPS, &vPoint);
845 CalcBoundingBox( vX
846 ,vY
847 );
848 } // end of wxDC::DoDrawPoint
849
850 void wxDC::DoDrawPolygon( int n,
851 wxPoint vPoints[],
852 wxCoord vXoffset,
853 wxCoord vYoffset,
854 int nFillStyle )
855 {
856 ULONG ulCount = 1; // Number of polygons.
857 POLYGON vPlgn; // polygon.
858 ULONG flOptions = 0L; // Drawing options.
859
860 //////////////////////////////////////////////////////////////////////////////
861 // This contains fields of option bits... to draw boundary lines as well as
862 // the area interior.
863 //
864 // Drawing boundary lines:
865 // POLYGON_NOBOUNDARY Does not draw boundary lines.
866 // POLYGON_BOUNDARY Draws boundary lines (the default).
867 //
868 // Construction of the area interior:
869 // POLYGON_ALTERNATE Constructs interior in alternate mode
870 // (the default).
871 // POLYGON_WINDING Constructs interior in winding mode.
872 //////////////////////////////////////////////////////////////////////////////
873
874 ULONG flModel = POLYGON_INCL; // Drawing model.
875
876 //////////////////////////////////////////////////////////////////////////////
877 // Drawing model.
878 // POLYGON_INCL Fill is inclusive of bottom right (the default).
879 // POLYGON_EXCL Fill is exclusive of bottom right.
880 // This is provided to aid migration from other graphics models.
881 //////////////////////////////////////////////////////////////////////////////
882
883 LONG lHits = 0L; // Correlation/error indicator.
884 int i;
885 int nIsTRANSPARENT = 0;
886 LONG lBorderColor = 0L;
887 LONG lColor = 0L;
888
889 lBorderColor = m_pen.GetColour().GetPixel();
890 lColor = m_brush.GetColour().GetPixel();
891 if(m_brush.GetStyle() == wxTRANSPARENT)
892 nIsTRANSPARENT = 1;
893
894 vPlgn.ulPoints = n;
895 vPlgn.aPointl = (POINTL*) calloc( n + 1
896 ,sizeof(POINTL)
897 ); // well, new will call malloc
898
899 for(i = 0; i < n; i++)
900 {
901 vPlgn.aPointl[i].x = vPoints[i].x+vXoffset;
902 vPlgn.aPointl[i].y = OS2Y(vPoints[i].y+vYoffset,0);
903 }
904 flOptions = POLYGON_BOUNDARY;
905 if(nFillStyle == wxWINDING_RULE)
906 flOptions |= POLYGON_WINDING;
907 else
908 flOptions |= POLYGON_ALTERNATE;
909
910 ::GpiSetColor(m_hPS, lBorderColor);
911 ::GpiMove(m_hPS, &vPlgn.aPointl[0]);
912 lHits = ::GpiPolygons(m_hPS, ulCount, &vPlgn, flOptions, flModel);
913 free(vPlgn.aPointl);
914 } // end of wxDC::DoDrawPolygon
915
916 void wxDC::DoDrawLines(
917 int n
918 , wxPoint vPoints[]
919 , wxCoord vXoffset
920 , wxCoord vYoffset
921 )
922 {
923 POINTL vPoint;
924
925 if (vXoffset != 0L || vXoffset != 0L)
926 {
927 int i;
928
929 vPoint.x = vPoints[0].x + vXoffset;
930 vPoint.y = OS2Y(vPoints[0].y + vYoffset,0);
931 ::GpiMove(m_hPS, &vPoint);
932
933 LONG lBorderColor = m_pen.GetColour().GetPixel();
934
935 ::GpiSetColor(m_hPS, lBorderColor);
936 for(i = 1; i < n; i++)
937 {
938 vPoint.x = vPoints[i].x + vXoffset;
939 vPoint.y = OS2Y(vPoints[i].y + vYoffset,0);
940 ::GpiLine(m_hPS, &vPoint);
941 }
942 }
943 else
944 {
945 int i;
946
947 CalcBoundingBox( vPoints[0].x
948 ,vPoints[0].y
949 );
950 vPoint.x = vPoints[0].x;
951 vPoint.y = OS2Y(vPoints[0].y,0);
952 ::GpiMove(m_hPS, &vPoint);
953
954 for (i = 0; i < n; i++)
955 {
956 CalcBoundingBox( vPoints[i].x
957 ,vPoints[i].y
958 );
959 vPoint.x = vPoints[i].x;
960 vPoint.y = OS2Y(vPoints[i].y,0);
961 ::GpiLine(m_hPS, &vPoint);
962 }
963 }
964 } // end of wxDC::DoDrawLines
965
966 void wxDC::DoDrawRectangle(
967 wxCoord vX
968 , wxCoord vY
969 , wxCoord vWidth
970 , wxCoord vHeight
971 )
972 {
973 POINTL vPoint[2];
974 LONG lControl;
975 LONG lColor;
976 LONG lBorderColor;
977 int nIsTRANSPARENT = 0;
978
979 //
980 // Might be a memory DC with no Paint rect.
981 //
982 if (!(m_vRclPaint.yTop == 0 &&
983 m_vRclPaint.yBottom == 0 &&
984 m_vRclPaint.xRight == 0 &&
985 m_vRclPaint.xLeft == 0))
986 vY = OS2Y(vY,vHeight);
987 else
988 {
989 if (m_vSelectedBitmap.Ok())
990 {
991 m_vRclPaint.yTop = m_vSelectedBitmap.GetHeight();
992 m_vRclPaint.xRight = m_vSelectedBitmap.GetWidth();
993 vY = OS2Y(vY,vHeight);
994 }
995 }
996
997 wxCoord vX2 = vX + vWidth;
998 wxCoord vY2 = vY + vHeight;
999
1000 vPoint[0].x = vX;
1001 vPoint[0].y = vY;
1002 vPoint[1].x = vX + vWidth - 1;
1003 vPoint[1].y = vY + vHeight - 1;
1004 ::GpiMove(m_hPS, &vPoint[0]);
1005 lColor = m_brush.GetColour().GetPixel();
1006 lBorderColor = m_pen.GetColour().GetPixel();
1007 if (m_brush.GetStyle() == wxTRANSPARENT)
1008 nIsTRANSPARENT = 1;
1009 if(lColor == lBorderColor || nIsTRANSPARENT)
1010 {
1011 lControl = DRO_OUTLINEFILL; //DRO_FILL;
1012 if(m_brush.GetStyle() == wxTRANSPARENT)
1013 lControl = DRO_OUTLINE;
1014
1015 ::GpiSetColor(m_hPS, lBorderColor);
1016 ::GpiBox( m_hPS // handle to a presentation space
1017 ,lControl // draw the box outline ? or ?
1018 ,&vPoint[1] // address of the corner
1019 ,0L // horizontal corner radius
1020 ,0L // vertical corner radius
1021 );
1022 }
1023 else
1024 {
1025 lControl = DRO_OUTLINE;
1026 ::GpiSetColor( m_hPS
1027 ,lBorderColor
1028 );
1029 ::GpiBox( m_hPS
1030 ,lControl
1031 ,&vPoint[1]
1032 ,0L
1033 ,0L
1034 );
1035 lControl = DRO_FILL;
1036 ::GpiSetColor( m_hPS
1037 ,lColor
1038 );
1039 vPoint[0].x = vX + 1;
1040 vPoint[0].y = vY + 1;
1041 vPoint[1].x = vX + vWidth - 2;
1042 vPoint[1].y = vY + vHeight - 2;
1043 ::GpiMove(m_hPS, &vPoint[0]);
1044 ::GpiBox( m_hPS
1045 ,lControl
1046 ,&vPoint[1]
1047 ,0L
1048 ,0L
1049 );
1050 }
1051 CalcBoundingBox(vX, vY);
1052 CalcBoundingBox(vX2, vY2);
1053 } // end of wxDC::DoDrawRectangle
1054
1055 void wxDC::DoDrawRoundedRectangle(
1056 wxCoord vX
1057 , wxCoord vY
1058 , wxCoord vWidth
1059 , wxCoord vHeight
1060 , double dRadius
1061 )
1062 {
1063 POINTL vPoint[2];
1064 LONG lControl;
1065 LONG lColor;
1066 LONG lBorderColor;
1067 int nIsTRANSPARENT = 0;
1068
1069 //
1070 // Might be a memory DC with no Paint rect.
1071 //
1072 if (!(m_vRclPaint.yTop == 0 &&
1073 m_vRclPaint.yBottom == 0 &&
1074 m_vRclPaint.xRight == 0 &&
1075 m_vRclPaint.xLeft == 0))
1076 vY = OS2Y(vY,vHeight);
1077 else
1078 {
1079 if (m_vSelectedBitmap.Ok())
1080 {
1081 m_vRclPaint.yTop = m_vSelectedBitmap.GetHeight();
1082 m_vRclPaint.xRight = m_vSelectedBitmap.GetWidth();
1083 vY = OS2Y(vY,vHeight);
1084 }
1085 }
1086
1087 wxCoord vX2 = (vX + vWidth);
1088 wxCoord vY2 = (vY + vHeight);
1089
1090 vPoint[0].x = vX;
1091 vPoint[0].y = vY;
1092 vPoint[1].x = vX + vWidth - 1;
1093 vPoint[1].y = vY + vHeight - 1;
1094 ::GpiMove(m_hPS, &vPoint[0]);
1095
1096 lColor = m_brush.GetColour().GetPixel();
1097 lBorderColor = m_pen.GetColour().GetPixel();
1098 lControl = DRO_OUTLINEFILL; //DRO_FILL;
1099 if (m_brush.GetStyle() == wxTRANSPARENT)
1100 nIsTRANSPARENT = 1;
1101 if(lColor == lBorderColor || nIsTRANSPARENT)
1102 {
1103 lControl = DRO_OUTLINEFILL; //DRO_FILL;
1104 if(m_brush.GetStyle() == wxTRANSPARENT)
1105 lControl = DRO_OUTLINE;
1106
1107 ::GpiSetColor(m_hPS, lColor);
1108 ::GpiBox( m_hPS // handle to a presentation space
1109 ,lControl // draw the box outline ? or ?
1110 ,&vPoint[1] // address of the corner
1111 ,(LONG)dRadius // horizontal corner radius
1112 ,(LONG)dRadius // vertical corner radius
1113 );
1114 }
1115 else
1116 {
1117 lControl = DRO_OUTLINE;
1118 ::GpiSetColor( m_hPS
1119 ,lBorderColor
1120 );
1121 ::GpiBox( m_hPS
1122 ,lControl
1123 ,&vPoint[1]
1124 ,(LONG)dRadius
1125 ,(LONG)dRadius
1126 );
1127 lControl = DRO_FILL;
1128 ::GpiSetColor( m_hPS
1129 ,lColor
1130 );
1131 vPoint[0].x = vX + 1;
1132 vPoint[0].y = vY + 1;
1133 vPoint[1].x = vX + vWidth - 2;
1134 vPoint[1].y = vY + vHeight - 2;
1135 ::GpiMove(m_hPS, &vPoint[0]);
1136 ::GpiBox( m_hPS
1137 ,lControl
1138 ,&vPoint[1]
1139 ,(LONG)dRadius
1140 ,(LONG)dRadius
1141 );
1142 }
1143
1144 CalcBoundingBox(vX, vY);
1145 CalcBoundingBox(vX2, vY2);
1146 } // end of wxDC::DoDrawRoundedRectangle
1147
1148 // Draw Ellipse within box (x,y) - (x+width, y+height)
1149 void wxDC::DoDrawEllipse(
1150 wxCoord vX
1151 , wxCoord vY
1152 , wxCoord vWidth
1153 , wxCoord vHeight
1154 )
1155 {
1156 POINTL vPtlPos; // Structure for current position
1157 FIXED vFxMult; // Multiplier for ellipse
1158 ARCPARAMS vArcp; // Structure for arc parameters
1159
1160 vY = OS2Y(vY,vHeight);
1161
1162 vArcp.lR = 0;
1163 vArcp.lQ = vHeight/2;
1164 vArcp.lP = vWidth/2;
1165 vArcp.lS = 0;
1166 ::GpiSetArcParams( m_hPS
1167 ,&vArcp
1168 ); // Sets parameters to default
1169 vPtlPos.x = vX + vWidth/2; // Loads x-coordinate
1170 vPtlPos.y = vY + vHeight/2; // Loads y-coordinate
1171 ::GpiMove( m_hPS
1172 ,&vPtlPos
1173 ); // Sets current position
1174 vFxMult = MAKEFIXED(1, 0); /* Sets multiplier */
1175
1176 //
1177 // DRO_FILL, DRO_OTLINEFILL - where to get
1178 //
1179 ::GpiFullArc( m_hPS
1180 ,DRO_OUTLINE
1181 ,vFxMult
1182 ); // Draws full arc with center at current position
1183
1184 wxCoord vX2 = (vX + vWidth);
1185 wxCoord vY2 = (vY + vHeight);
1186
1187 CalcBoundingBox(vX, vY);
1188 CalcBoundingBox(vX2, vY2);
1189 } // end of wxDC::DoDrawEllipse
1190
1191 void wxDC::DoDrawEllipticArc(
1192 wxCoord vX
1193 , wxCoord vY
1194 , wxCoord vWidth
1195 , wxCoord vHeight
1196 , double dSa
1197 , double dEa
1198 )
1199 {
1200 POINTL vPtlPos; // Structure for current position
1201 FIXED vFxMult; // Multiplier for ellipse
1202 ARCPARAMS vArcp; // Structure for arc parameters
1203 FIXED vFSa;
1204 FIXED vFSweepa; // Start angle, sweep angle
1205 double dIntPart;
1206 double dFractPart;
1207
1208 vY = OS2Y(vY,vHeight);
1209
1210 dFractPart = modf(dSa,&dIntPart);
1211 vFSa = MAKEFIXED((int)dIntPart, (int)(dFractPart * 0xffff) );
1212 dFractPart = modf(dEa - dSa, &dIntPart);
1213 vFSweepa = MAKEFIXED((int)dIntPart, (int)(dFractPart * 0xffff) );
1214
1215 //
1216 // Ellipse main axis (r,q), (p,s) with center at (0,0)
1217 //
1218 vArcp.lR = 0;
1219 vArcp.lQ = vHeight/2;
1220 vArcp.lP = vWidth/2;
1221 vArcp.lS = 0;
1222 ::GpiSetArcParams(m_hPS, &vArcp); // Sets parameters to default
1223 vPtlPos.x = (wxCoord)(vX + vWidth/2 * (1. + cos(DegToRad(dSa)))); // Loads x-coordinate
1224 vPtlPos.y = (wxCoord)(vY + vHeight/2 * (1. + sin(DegToRad(dSa)))); // Loads y-coordinate
1225 ::GpiMove(m_hPS, &vPtlPos); // Sets current position
1226
1227 //
1228 // May be not to the center ?
1229 //
1230 vPtlPos.x = vX + vWidth/2 ; // Loads x-coordinate
1231 vPtlPos.y = vY + vHeight/2; // Loads y-coordinate
1232 vFxMult = MAKEFIXED(1, 0); // Sets multiplier
1233
1234 //
1235 // DRO_FILL, DRO_OTLINEFILL - where to get
1236 //
1237 ::GpiPartialArc( m_hPS
1238 ,&vPtlPos
1239 ,vFxMult
1240 ,vFSa
1241 ,vFSweepa
1242 );
1243 wxCoord vX2 = (vX + vWidth);
1244 wxCoord vY2 = (vY + vHeight);
1245
1246 CalcBoundingBox(vX, vY);
1247 CalcBoundingBox(vX2, vY2);
1248 } // end of wxDC::DoDrawEllipticArc
1249
1250 void wxDC::DoDrawIcon(
1251 const wxIcon& rIcon
1252 , wxCoord vX
1253 , wxCoord vY
1254 )
1255 {
1256 //
1257 // Need to copy back into a bitmap. ::WinDrawPointer uses device coords
1258 // and I don't feel like figuring those out for scrollable windows so
1259 // just convert to a bitmap then let the DoDrawBitmap routine display it
1260 //
1261 if (rIcon.IsXpm())
1262 {
1263 DoDrawBitmap(rIcon.GetXpmSrc(), vX, vY, true);
1264 }
1265 else
1266 {
1267 wxBitmap vBitmap(rIcon);
1268
1269 DoDrawBitmap(vBitmap, vX, vY, false);
1270 }
1271 CalcBoundingBox(vX, vY);
1272 CalcBoundingBox(vX + rIcon.GetWidth(), vY + rIcon.GetHeight());
1273 } // end of wxDC::DoDrawIcon
1274
1275 void wxDC::DoDrawBitmap(
1276 const wxBitmap& rBmp
1277 , wxCoord vX
1278 , wxCoord vY
1279 , bool bUseMask
1280 )
1281 {
1282 #if wxUSE_PRINTING_ARCHITECTURE
1283 if (!IsKindOf(CLASSINFO(wxPrinterDC)))
1284 #endif
1285 {
1286 HBITMAP hBitmap = (HBITMAP)rBmp.GetHBITMAP();
1287 HBITMAP hBitmapOld = NULLHANDLE;
1288 POINTL vPoint[4];
1289
1290 vY = OS2Y(vY,rBmp.GetHeight());
1291
1292 vPoint[0].x = vX;
1293 vPoint[0].y = vY + rBmp.GetHeight();
1294 vPoint[1].x = vX + rBmp.GetWidth();
1295 vPoint[1].y = vY;
1296 vPoint[2].x = 0;
1297 vPoint[2].y = 0;
1298 vPoint[3].x = rBmp.GetWidth();
1299 vPoint[3].y = rBmp.GetHeight();
1300 if (bUseMask)
1301 {
1302 wxMask* pMask = rBmp.GetMask();
1303
1304 if (pMask)
1305 {
1306 //
1307 // Need to imitate ::MaskBlt in windows.
1308 // 1) Extract the bits from from the bitmap.
1309 // 2) Extract the bits from the mask
1310 // 3) Using the mask bits do the following:
1311 // A) If the mask byte is 00 leave the bitmap byte alone
1312 // B) If the mask byte is FF copy the screen color into
1313 // bitmap byte
1314 // 4) Create a new bitmap and set its bits to the above result
1315 // 5) Blit this to the screen PS
1316 //
1317 HBITMAP hMask = (HBITMAP)pMask->GetMaskBitmap();
1318 HBITMAP hOldMask = NULLHANDLE;
1319 HBITMAP hOldBitmap = NULLHANDLE;
1320 HBITMAP hNewBitmap = NULLHANDLE;
1321 unsigned char* pucBits; // buffer that will contain the bitmap data
1322 unsigned char* pucBitsMask; // buffer that will contain the mask data
1323 unsigned char* pucData; // pointer to use to traverse bitmap data
1324 unsigned char* pucDataMask; // pointer to use to traverse mask data
1325 LONG lHits;
1326 ERRORID vError;
1327 wxString sError;
1328
1329 //
1330 // The usual Memory context creation stuff
1331 //
1332 DEVOPENSTRUC vDop = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
1333 SIZEL vSize = {0, 0};
1334 HDC hDC = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1335 HPS hPS = ::GpiCreatePS(vHabmain, hDC, &vSize, PU_PELS | GPIA_ASSOC);
1336
1337 //
1338 // The usual bitmap header stuff
1339 //
1340 BITMAPINFOHEADER2 vHeader;
1341 BITMAPINFO2 vInfo;
1342
1343 memset(&vHeader, '\0', 16);
1344 vHeader.cbFix = 16;
1345
1346 memset(&vInfo, '\0', 16);
1347 vInfo.cbFix = 16;
1348 vInfo.cx = (ULONG)rBmp.GetWidth();
1349 vInfo.cy = (ULONG)rBmp.GetHeight();
1350 vInfo.cPlanes = 1;
1351 vInfo.cBitCount = 24; // Set to desired count going in
1352
1353 //
1354 // Create the buffers for data....all wxBitmaps are 24 bit internally
1355 //
1356 int nBytesPerLine = rBmp.GetWidth() * 3;
1357 int nSizeDWORD = sizeof(DWORD);
1358 int nLineBoundary = nBytesPerLine % nSizeDWORD;
1359 int nPadding = 0;
1360 int i;
1361 int j;
1362 LONG lScans = 0L;
1363 LONG lColor = 0L;
1364
1365 //
1366 // Need to get a background color for mask blitting
1367 //
1368 if (IsKindOf(CLASSINFO(wxWindowDC)))
1369 {
1370 wxWindowDC* pWindowDC = wxDynamicCast(this, wxWindowDC);
1371
1372 lColor = pWindowDC->m_pCanvas->GetBackgroundColour().GetPixel();
1373 }
1374 else if (GetBrush().Ok())
1375 lColor = GetBrush().GetColour().GetPixel();
1376 else
1377 lColor = m_textBackgroundColour.GetPixel();
1378
1379 //
1380 // Bitmap must be in a double-word aligned address so we may
1381 // have some padding to worry about
1382 //
1383 if (nLineBoundary > 0)
1384 {
1385 nPadding = nSizeDWORD - nLineBoundary;
1386 nBytesPerLine += nPadding;
1387 }
1388 pucBits = (unsigned char *)malloc(nBytesPerLine * rBmp.GetHeight());
1389 pucBitsMask = (unsigned char *)malloc(nBytesPerLine * rBmp.GetHeight());
1390 memset(pucBits, '\0', (nBytesPerLine * rBmp.GetHeight()));
1391 memset(pucBitsMask, '\0', (nBytesPerLine * rBmp.GetHeight()));
1392
1393 //
1394 // Extract the bitmap and mask data
1395 //
1396 if ((hOldBitmap = ::GpiSetBitmap(hPS, hBitmap)) == HBM_ERROR)
1397 {
1398 vError = ::WinGetLastError(vHabmain);
1399 sError = wxPMErrorToStr(vError);
1400 }
1401 ::GpiQueryBitmapInfoHeader(hBitmap, &vHeader);
1402 vInfo.cBitCount = 24;
1403 if ((lScans = ::GpiQueryBitmapBits( hPS
1404 ,0L
1405 ,(LONG)rBmp.GetHeight()
1406 ,(PBYTE)pucBits
1407 ,&vInfo
1408 )) == GPI_ALTERROR)
1409 {
1410 vError = ::WinGetLastError(vHabmain);
1411 sError = wxPMErrorToStr(vError);
1412 }
1413 if ((hOldMask = ::GpiSetBitmap(hPS, hMask)) == HBM_ERROR)
1414 {
1415 vError = ::WinGetLastError(vHabmain);
1416 sError = wxPMErrorToStr(vError);
1417 }
1418 ::GpiQueryBitmapInfoHeader(hMask, &vHeader);
1419 vInfo.cBitCount = 24;
1420 if ((lScans = ::GpiQueryBitmapBits( hPS
1421 ,0L
1422 ,(LONG)rBmp.GetHeight()
1423 ,(PBYTE)pucBitsMask
1424 ,&vInfo
1425 )) == GPI_ALTERROR)
1426 {
1427 vError = ::WinGetLastError(vHabmain);
1428 sError = wxPMErrorToStr(vError);
1429 }
1430 if (( hMask = ::GpiSetBitmap(hPS, hOldMask)) == HBM_ERROR)
1431 {
1432 vError = ::WinGetLastError(vHabmain);
1433 sError = wxPMErrorToStr(vError);
1434 }
1435
1436 //
1437 // Now set the bytes(bits) according to the mask values
1438 // 3 bytes per pel...must handle one at a time
1439 //
1440 pucData = pucBits;
1441 pucDataMask = pucBitsMask;
1442
1443 //
1444 // 16 bit kludge really only kinda works. The mask gets applied
1445 // where needed but the original bitmap bits are dorked sometimes
1446 //
1447 bool bpp16 = (wxDisplayDepth() == 16);
1448
1449 for (i = 0; i < rBmp.GetHeight(); i++)
1450 {
1451 for (j = 0; j < rBmp.GetWidth(); j++)
1452 {
1453 // Byte 1
1454 if (bpp16 && *pucDataMask == 0xF8) // 16 bit display gobblygook
1455 pucData++;
1456 else if (*pucDataMask == 0xFF) // leave bitmap byte alone
1457 pucData++;
1458 else
1459 {
1460 *pucData = ((unsigned char)(lColor >> 16));
1461 pucData++;
1462 }
1463 // Byte 2
1464 if (bpp16 && *(pucDataMask + 1) == 0xFC) // 16 bit display gobblygook
1465 pucData++;
1466 else if (*(pucDataMask + 1) == 0xFF) // leave bitmap byte alone
1467 pucData++;
1468 else
1469 {
1470 *pucData = ((unsigned char)(lColor >> 8));
1471 pucData++;
1472 }
1473
1474 // Byte 3
1475 if (bpp16 && *(pucDataMask + 2) == 0xF8) // 16 bit display gobblygook
1476 pucData++;
1477 else if (*(pucDataMask + 2) == 0xFF) // leave bitmap byte alone
1478 pucData++;
1479 else
1480 {
1481 *pucData = ((unsigned char)lColor);
1482 pucData++;
1483 }
1484 pucDataMask += 3;
1485 }
1486 for (j = 0; j < nPadding; j++)
1487 {
1488 pucData++;
1489 pucDataMask++;
1490 }
1491 }
1492 //
1493 // Create a new bitmap
1494 //
1495 vHeader.cx = (ULONG)rBmp.GetWidth();
1496 vHeader.cy = (ULONG)rBmp.GetHeight();
1497 vHeader.cPlanes = 1L;
1498 vHeader.cBitCount = 24;
1499 if ((hNewBitmap = ::GpiCreateBitmap( hPS
1500 ,&vHeader
1501 ,CBM_INIT
1502 ,(PBYTE)pucBits
1503 ,&vInfo
1504 )) == GPI_ERROR)
1505 {
1506 vError = ::WinGetLastError(vHabmain);
1507 sError = wxPMErrorToStr(vError);
1508 }
1509
1510 //
1511 // Now blit it to the screen PS
1512 //
1513 if ((lHits = ::GpiWCBitBlt( (HPS)GetHPS()
1514 ,hNewBitmap
1515 ,4
1516 ,vPoint
1517 ,ROP_SRCCOPY
1518 ,BBO_IGNORE
1519 )) == GPI_ERROR)
1520 {
1521 vError = ::WinGetLastError(vHabmain);
1522 sError = wxPMErrorToStr(vError);
1523 }
1524
1525 //
1526 // Clean up
1527 //
1528 free(pucBits);
1529 free(pucBitsMask);
1530 ::GpiSetBitmap(hPS, NULLHANDLE);
1531 ::GpiDeleteBitmap(hNewBitmap);
1532 ::GpiDestroyPS(hPS);
1533 ::DevCloseDC(hDC);
1534 }
1535 }
1536 else
1537 {
1538 ULONG lOldForeGround = ::GpiQueryColor((HPS)GetHPS());
1539 ULONG lOldBackGround = ::GpiQueryBackColor((HPS)GetHPS());
1540
1541 if (m_textForegroundColour.Ok())
1542 {
1543 ::GpiSetColor( (HPS)GetHPS()
1544 ,m_textForegroundColour.GetPixel()
1545 );
1546 }
1547 if (m_textBackgroundColour.Ok())
1548 {
1549 ::GpiSetBackColor( (HPS)GetHPS()
1550 ,m_textBackgroundColour.GetPixel()
1551 );
1552 }
1553 //
1554 // Need to alter bits in a mono bitmap to match the new
1555 // background-foreground if it is different.
1556 //
1557 if (rBmp.IsMono() &&
1558 ((m_textForegroundColour.GetPixel() != lOldForeGround) ||
1559 (m_textBackgroundColour.GetPixel() != lOldBackGround)))
1560 {
1561 DEVOPENSTRUC vDop = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
1562 SIZEL vSize = {0, 0};
1563 HDC hDC = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1564 HPS hPS = ::GpiCreatePS(vHabmain, hDC, &vSize, PU_PELS | GPIA_ASSOC);
1565
1566 int nBytesPerLine = rBmp.GetWidth() * 3;
1567 int i, j;
1568 LONG lForeGround = m_textForegroundColour.GetPixel();
1569 LONG lBackGround = m_textBackgroundColour.GetPixel();
1570 LONG lScans;
1571 HBITMAP hOldBitmap = NULLHANDLE;
1572 BITMAPINFO2 vInfo;
1573 ERRORID vError;
1574 wxString sError;
1575
1576
1577 memset(&vInfo, '\0', 16);
1578 vInfo.cbFix = 16;
1579 vInfo.cx = (ULONG)rBmp.GetWidth();
1580 vInfo.cy = (ULONG)rBmp.GetHeight();
1581 vInfo.cPlanes = 1;
1582 vInfo.cBitCount = 24;
1583
1584 unsigned char* pucBits; // buffer that will contain the bitmap data
1585 unsigned char* pucData; // pointer to use to traverse bitmap data
1586
1587 pucBits = new unsigned char[nBytesPerLine * rBmp.GetHeight()];
1588 memset(pucBits, '\0', (nBytesPerLine * rBmp.GetHeight()));
1589
1590 if ((hOldBitmap = ::GpiSetBitmap(hPS, hBitmap)) == HBM_ERROR)
1591 {
1592 vError = ::WinGetLastError(vHabmain);
1593 sError = wxPMErrorToStr(vError);
1594 return;
1595 }
1596 if ((lScans = ::GpiQueryBitmapBits( hPS
1597 ,0L
1598 ,(LONG)rBmp.GetHeight()
1599 ,(PBYTE)pucBits
1600 ,&vInfo
1601 )) == GPI_ALTERROR)
1602 {
1603 vError = ::WinGetLastError(vHabmain);
1604 sError = wxPMErrorToStr(vError);
1605 return;
1606 }
1607 unsigned char cOldRedFore = (unsigned char)(lOldForeGround >> 16);
1608 unsigned char cOldGreenFore = (unsigned char)(lOldForeGround >> 8);
1609 unsigned char cOldBlueFore = (unsigned char)lOldForeGround;
1610
1611 unsigned char cRedFore = (unsigned char)(lForeGround >> 16);
1612 unsigned char cGreenFore = (unsigned char)(lForeGround >> 8);
1613 unsigned char cBlueFore = (unsigned char)lForeGround;
1614
1615 unsigned char cRedBack = (unsigned char)(lBackGround >> 16);
1616 unsigned char cGreenBack = (unsigned char)(lBackGround >> 8);
1617 unsigned char cBlueBack = (unsigned char)lBackGround;
1618
1619 pucData = pucBits;
1620 for (i = 0; i < rBmp.GetHeight(); i++)
1621 {
1622 for (j = 0; j < rBmp.GetWidth(); j++)
1623 {
1624 unsigned char cBmpRed = *pucData;
1625 unsigned char cBmpGreen = *(pucData + 1);
1626 unsigned char cBmpBlue = *(pucData + 2);
1627
1628 if ((cBmpRed == cOldRedFore) &&
1629 (cBmpGreen == cOldGreenFore) &&
1630 (cBmpBlue == cOldBlueFore))
1631 {
1632 *pucData = cBlueFore;
1633 pucData++;
1634 *pucData = cGreenFore;
1635 pucData++;
1636 *pucData = cRedFore;
1637 pucData++;
1638 }
1639 else
1640 {
1641 *pucData = cBlueBack;
1642 pucData++;
1643 *pucData = cGreenBack;
1644 pucData++;
1645 *pucData = cRedBack;
1646 pucData++;
1647 }
1648 }
1649 }
1650 if ((lScans = ::GpiSetBitmapBits( hPS
1651 ,0L
1652 ,(LONG)rBmp.GetHeight()
1653 ,(PBYTE)pucBits
1654 ,&vInfo
1655 )) == GPI_ALTERROR)
1656 {
1657 vError = ::WinGetLastError(vHabmain);
1658 sError = wxPMErrorToStr(vError);
1659 return;
1660 }
1661 delete [] pucBits;
1662 ::GpiSetBitmap(hPS, NULLHANDLE);
1663 ::GpiDestroyPS(hPS);
1664 ::DevCloseDC(hDC);
1665 }
1666 ::GpiWCBitBlt( (HPS)GetHPS()
1667 ,hBitmap
1668 ,4
1669 ,vPoint
1670 ,ROP_SRCCOPY
1671 ,BBO_IGNORE
1672 );
1673 ::GpiSetBitmap((HPS)GetHPS(), hBitmapOld);
1674 ::GpiSetColor((HPS)GetHPS(), lOldForeGround);
1675 ::GpiSetBackColor((HPS)GetHPS(), lOldBackGround);
1676 }
1677 }
1678 } // end of wxDC::DoDrawBitmap
1679
1680 void wxDC::DoDrawText(
1681 const wxString& rsText
1682 , wxCoord vX
1683 , wxCoord vY
1684 )
1685 {
1686 wxCoord vWidth;
1687 wxCoord vHeight;
1688
1689 DrawAnyText( rsText
1690 ,vX
1691 ,vY
1692 );
1693
1694 CalcBoundingBox(vX, vY);
1695 GetTextExtent(rsText, &vWidth, &vHeight);
1696 CalcBoundingBox((vX + vWidth), (vY + vHeight));
1697 } // end of wxDC::DoDrawText
1698
1699 void wxDC::DrawAnyText( const wxString& rsText,
1700 wxCoord vX,
1701 wxCoord vY )
1702 {
1703 int nOldBackground = 0;
1704 POINTL vPtlStart;
1705 LONG lHits;
1706 wxCoord vTextX = 0;
1707 wxCoord vTextY = 0;
1708
1709 //
1710 // prepare for drawing the text
1711 //
1712
1713 //
1714 // Set text color attributes
1715 //
1716 if (m_textForegroundColour.Ok())
1717 {
1718 SetTextColor( m_hPS
1719 ,(int)m_textForegroundColour.GetPixel()
1720 );
1721 }
1722
1723 if (m_textBackgroundColour.Ok())
1724 {
1725 nOldBackground = SetTextBkColor( m_hPS
1726 ,(int)m_textBackgroundColour.GetPixel()
1727 );
1728 }
1729 SetBkMode( m_hPS
1730 ,m_backgroundMode
1731 );
1732 GetTextExtent( rsText
1733 ,&vTextX
1734 ,&vTextY
1735 );
1736 vPtlStart.x = vX;
1737 if (!(m_vRclPaint.yTop == 0 &&
1738 m_vRclPaint.yBottom == 0 &&
1739 m_vRclPaint.xRight == 0 &&
1740 m_vRclPaint.xLeft == 0))
1741 {
1742 vPtlStart.y = OS2Y(vY,vTextY);
1743 }
1744 else
1745 {
1746 if (m_vSelectedBitmap.Ok())
1747 {
1748 m_vRclPaint.yTop = m_vSelectedBitmap.GetHeight();
1749 m_vRclPaint.xRight = m_vSelectedBitmap.GetWidth();
1750 vPtlStart.y = OS2Y(vY,vTextY);
1751 }
1752 else
1753 vPtlStart.y = vY;
1754 }
1755
1756 ::GpiMove(m_hPS, &vPtlStart);
1757 lHits = ::GpiCharString( m_hPS
1758 ,rsText.length()
1759 ,rsText.wx_str()
1760 );
1761 if (lHits != GPI_OK)
1762 {
1763 wxLogLastError(wxT("TextOut"));
1764 }
1765
1766 //
1767 // Restore the old parameters (text foreground colour may be left because
1768 // it never is set to anything else, but background should remain
1769 // transparent even if we just drew an opaque string)
1770 //
1771 if (m_textBackgroundColour.Ok())
1772 SetTextBkColor( m_hPS
1773 ,nOldBackground
1774 );
1775 SetBkMode( m_hPS
1776 ,wxTRANSPARENT
1777 );
1778 }
1779
1780 void wxDC::DoDrawRotatedText(
1781 const wxString& rsText
1782 , wxCoord vX
1783 , wxCoord vY
1784 , double dAngle
1785 )
1786 {
1787 if (dAngle == 0.0)
1788 {
1789 DoDrawText( rsText
1790 ,vX
1791 ,vY
1792 );
1793 }
1794
1795 // TODO:
1796 /*
1797 if ( angle == 0.0 )
1798 {
1799 DoDrawText(text, x, y);
1800 }
1801 else
1802 {
1803 LOGFONT lf;
1804 wxFillLogFont(&lf, &m_font);
1805
1806 // GDI wants the angle in tenth of degree
1807 long angle10 = (long)(angle * 10);
1808 lf.lfEscapement = angle10;
1809 lf. lfOrientation = angle10;
1810
1811 HFONT hfont = ::CreateFontIndirect(&lf);
1812 if ( !hfont )
1813 {
1814 wxLogLastError("CreateFont");
1815 }
1816 else
1817 {
1818 HFONT hfontOld = ::SelectObject(GetHdc(), hfont);
1819
1820 DrawAnyText(text, x, y);
1821
1822 (void)::SelectObject(GetHdc(), hfontOld);
1823 }
1824
1825 // call the bounding box by adding all four vertices of the rectangle
1826 // containing the text to it (simpler and probably not slower than
1827 // determining which of them is really topmost/leftmost/...)
1828 wxCoord w, h;
1829 GetTextExtent(text, &w, &h);
1830
1831 double rad = DegToRad(angle);
1832
1833 // "upper left" and "upper right"
1834 CalcBoundingBox(x, y);
1835 CalcBoundingBox(x + w*cos(rad), y - h*sin(rad));
1836 CalcBoundingBox(x + h*sin(rad), y + h*cos(rad));
1837
1838 // "bottom left" and "bottom right"
1839 x += (wxCoord)(h*sin(rad));
1840 y += (wxCoord)(h*cos(rad));
1841 CalcBoundingBox(x, y);
1842 CalcBoundingBox(x + h*sin(rad), y + h*cos(rad));
1843 }
1844 */
1845 }
1846
1847 // ---------------------------------------------------------------------------
1848 // set GDI objects
1849 // ---------------------------------------------------------------------------
1850
1851 void wxDC::DoSelectPalette( bool WXUNUSED(bRealize) )
1852 {
1853 //
1854 // Set the old object temporarily, in case the assignment deletes an object
1855 // that's not yet selected out.
1856 //
1857 if (m_hOldPalette)
1858 {
1859 m_hOldPalette = 0;
1860 }
1861
1862 if (m_palette.Ok())
1863 {
1864 HPALETTE hOldPal;
1865
1866 hOldPal = ::GpiSelectPalette((HDC) m_hPS, (HPALETTE) m_palette.GetHPALETTE());
1867 if (!m_hOldPalette)
1868 m_hOldPalette = (WXHPALETTE)hOldPal;
1869 }
1870 } // end of wxDC::DoSelectPalette
1871
1872 void wxDC::InitializePalette()
1873 {
1874 if (wxDisplayDepth() <= 8 )
1875 {
1876 //
1877 // Look for any window or parent that has a custom palette. If any has
1878 // one then we need to use it in drawing operations
1879 //
1880 wxWindow* pWin = m_pCanvas->GetAncestorWithCustomPalette();
1881
1882 m_hasCustomPalette = pWin && pWin->HasCustomPalette();
1883 if (m_hasCustomPalette)
1884 {
1885 m_palette = pWin->GetPalette();
1886
1887 //
1888 // turn on PM translation for this palette
1889 //
1890 DoSelectPalette();
1891 }
1892 }
1893 } // end of wxDC::InitializePalette
1894
1895 void wxDC::SetPalette(
1896 const wxPalette& rPalette
1897 )
1898 {
1899 if (m_hOldFont)
1900 {
1901 m_hOldFont = 0;
1902 }
1903 m_palette = rPalette;
1904 if (!rPalette.Ok())
1905 {
1906 if (m_hOldFont)
1907 {
1908 m_hOldFont = 0;
1909 }
1910 }
1911 HPALETTE hOldPal = ::GpiSelectPalette((HDC) m_hPS, (HPALETTE) m_palette.GetHPALETTE());
1912 if (!m_hOldPalette)
1913 m_hOldPalette = (WXHPALETTE)hOldPal;
1914 } // end of wxDC::SetPalette
1915
1916 void wxDC::SetFont(
1917 const wxFont& rFont
1918 )
1919 {
1920 //
1921 // Set the old object temporarily, in case the assignment deletes an object
1922 // that's not yet selected out.
1923 //
1924 if (m_hOldFont)
1925 {
1926 m_hOldFont = 0;
1927 }
1928 m_font = rFont;
1929 if (!rFont.Ok())
1930 {
1931 m_hOldFont = 0;
1932 }
1933
1934 m_font.SetPS(m_hPS); // this will realize the font
1935
1936 if (m_font.Ok())
1937 {
1938 HFONT hFont = m_font.GetResourceHandle();
1939 if (hFont == (HFONT) NULL)
1940 {
1941 wxLogDebug(wxT("::SelectObject failed in wxDC::SetFont."));
1942 }
1943 if (!m_hOldFont)
1944 m_hOldFont = (WXHFONT) hFont;
1945 }
1946 } // end of wxDC::SetFont
1947
1948 void wxDC::SetPen(
1949 const wxPen& rPen
1950 )
1951 {
1952 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1953
1954 if (m_pen == rPen)
1955 return;
1956 m_pen = rPen;
1957 if (!m_pen.Ok())
1958 return;
1959
1960 if (m_hOldPen)
1961 m_hOldPen = 0L;
1962 m_pen = rPen;
1963
1964 if (!m_pen.Ok())
1965 {
1966 if (m_hOldPen)
1967 {
1968 m_pen.SetPS((HPS)m_hOldPen);
1969 }
1970 m_hOldPen = 0L;
1971 }
1972
1973 if (m_pen.Ok())
1974 {
1975 if (m_pen.GetResourceHandle())
1976 {
1977 m_pen.SetPS(m_hPS);
1978 if (!m_hOldPen)
1979 m_hOldPen = m_pen.GetPS();
1980 }
1981 ::GpiSetColor(m_hPS, m_pen.GetColour().GetPixel());
1982 }
1983 }
1984
1985 void wxDC::SetBrush(
1986 const wxBrush& rBrush
1987 )
1988 {
1989 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1990
1991 if (m_hOldBrush)
1992 m_hOldBrush = 0L;
1993 m_brush = rBrush;
1994 if (!m_brush.Ok())
1995 if (m_brush == rBrush)
1996 return;
1997 if (!m_brush.Ok())
1998 if (m_hOldBrush)
1999 m_hOldBrush = 0L;
2000
2001 if (!m_brush.Ok())
2002 {
2003 if (m_hOldBrush)
2004 {
2005 m_brush.SetPS((HPS)m_hOldBrush);
2006 }
2007 m_hOldBrush = 0L;
2008 }
2009
2010 if (m_brush.Ok())
2011 {
2012 if (m_brush.GetResourceHandle())
2013 {
2014 m_brush.SetPS(m_hPS);
2015 if (!m_hOldBrush)
2016 m_hOldBrush = (WXHWND)m_brush.GetPS();
2017 }
2018 }
2019 } // end of wxDC::SetBrush
2020
2021 void wxDC::SetBackground(const wxBrush& rBrush)
2022 {
2023 m_backgroundBrush = rBrush;
2024
2025 if (m_backgroundBrush.Ok())
2026 {
2027 (void)::GpiSetBackColor((HPS)m_hPS, m_backgroundBrush.GetColour().GetPixel());
2028 }
2029 } // end of wxDC::SetBackground
2030
2031 void wxDC::SetBackgroundMode(int nMode)
2032 {
2033 m_backgroundMode = nMode;
2034 } // end of wxDC::SetBackgroundMode
2035
2036 void wxDC::SetLogicalFunction(int nFunction)
2037 {
2038 m_logicalFunction = nFunction;
2039 SetRop((WXHDC)m_hDC);
2040 } // wxDC::SetLogicalFunction
2041
2042 void wxDC::SetRop(WXHDC hDC)
2043 {
2044 if (!hDC || m_logicalFunction < 0)
2045 return;
2046
2047 LONG lCRop;
2048 switch (m_logicalFunction)
2049 {
2050 case wxXOR:
2051 lCRop = FM_XOR;
2052 break;
2053
2054 case wxINVERT:
2055 lCRop = FM_INVERT;
2056 break;
2057
2058 case wxOR_REVERSE:
2059 lCRop = FM_MERGESRCNOT;
2060 break;
2061
2062 case wxAND_REVERSE:
2063 lCRop = FM_NOTMASKSRC;
2064 break;
2065
2066 case wxCLEAR:
2067 lCRop = FM_ONE;
2068 break;
2069
2070 case wxSET:
2071 lCRop = FM_ZERO;
2072 break;
2073
2074 case wxSRC_INVERT:
2075 lCRop = FM_MERGENOTSRC;
2076 break;
2077
2078 case wxOR_INVERT:
2079 lCRop = FM_MERGESRCNOT;
2080 break;
2081
2082 case wxAND:
2083 lCRop = FM_AND;
2084 break;
2085
2086 case wxOR:
2087 lCRop = FM_OR;
2088 break;
2089
2090 case wxAND_INVERT:
2091 lCRop = FM_SUBTRACT;
2092 break;
2093
2094 case wxEQUIV:
2095 case wxNAND:
2096 case wxCOPY:
2097 default:
2098 lCRop = FM_OVERPAINT;
2099 break;
2100 }
2101 ::GpiSetMix((HPS)hDC, lCRop);
2102 } // end of wxDC::SetRop
2103
2104 bool wxDC::StartDoc( const wxString& WXUNUSED(rsMessage) )
2105 {
2106 // We might be previewing, so return true to let it continue.
2107 return true;
2108 } // end of wxDC::StartDoc
2109
2110 void wxDC::EndDoc()
2111 {
2112 } // end of wxDC::EndDoc
2113
2114 void wxDC::StartPage()
2115 {
2116 } // end of wxDC::StartPage
2117
2118 void wxDC::EndPage()
2119 {
2120 } // end of wxDC::EndPage
2121
2122 // ---------------------------------------------------------------------------
2123 // text metrics
2124 // ---------------------------------------------------------------------------
2125
2126 wxCoord wxDC::GetCharHeight() const
2127 {
2128 FONTMETRICS vFM; // metrics structure
2129
2130 ::GpiQueryFontMetrics( m_hPS
2131 ,sizeof(FONTMETRICS)
2132 ,&vFM
2133 );
2134 return YDEV2LOGREL(vFM.lXHeight);
2135 }
2136
2137 wxCoord wxDC::GetCharWidth() const
2138 {
2139 FONTMETRICS vFM; // metrics structure
2140
2141 ::GpiQueryFontMetrics( m_hPS
2142 ,sizeof(FONTMETRICS)
2143 ,&vFM
2144 );
2145 return XDEV2LOGREL(vFM.lAveCharWidth);
2146 }
2147
2148 void wxDC::DoGetTextExtent(
2149 const wxString& rsString
2150 , wxCoord* pvX
2151 , wxCoord* pvY
2152 , wxCoord* pvDescent
2153 , wxCoord* pvExternalLeading
2154 , wxFont* pTheFont
2155 ) const
2156 {
2157 POINTL avPoint[TXTBOX_COUNT];
2158 POINTL vPtMin;
2159 POINTL vPtMax;
2160 int i;
2161 int l;
2162 FONTMETRICS vFM; // metrics structure
2163 BOOL bRc;
2164 ERRORID vErrorCode; // last error id code
2165 wxFont* pFontToUse = (wxFont*)pTheFont;
2166
2167 wxChar zMsg[128]; // DEBUG
2168 wxString sError;
2169
2170 if (!pFontToUse)
2171 pFontToUse = (wxFont*)&m_font;
2172 l = rsString.length();
2173
2174 //
2175 // In world coordinates.
2176 //
2177 bRc = ::GpiQueryTextBox( m_hPS
2178 ,l
2179 ,(char *)rsString.wx_str()
2180 ,TXTBOX_COUNT // return maximum information
2181 ,avPoint // array of coordinates points
2182 );
2183 if(!bRc)
2184 {
2185 vErrorCode = ::WinGetLastError(wxGetInstance());
2186 sError = wxPMErrorToStr(vErrorCode);
2187 // DEBUG
2188 wxSprintf(zMsg, _T("GpiQueryTextBox for %s: failed with Error: %lx - %s"), rsString.c_str(), vErrorCode, sError.c_str());
2189 (void)wxMessageBox( _T("wxWidgets Menu sample")
2190 ,zMsg
2191 ,wxICON_INFORMATION
2192 );
2193 }
2194
2195 vPtMin.x = avPoint[0].x;
2196 vPtMax.x = avPoint[0].x;
2197 vPtMin.y = avPoint[0].y;
2198 vPtMax.y = avPoint[0].y;
2199 for (i = 1; i < 4; i++)
2200 {
2201 if(vPtMin.x > avPoint[i].x) vPtMin.x = avPoint[i].x;
2202 if(vPtMin.y > avPoint[i].y) vPtMin.y = avPoint[i].y;
2203 if(vPtMax.x < avPoint[i].x) vPtMax.x = avPoint[i].x;
2204 if(vPtMax.y < avPoint[i].y) vPtMax.y = avPoint[i].y;
2205 }
2206 ::GpiQueryFontMetrics( m_hPS
2207 ,sizeof(FONTMETRICS)
2208 ,&vFM
2209 );
2210
2211 if (pvX)
2212 *pvX = (wxCoord)(vPtMax.x - vPtMin.x + 1);
2213 if (pvY)
2214 *pvY = (wxCoord)(vPtMax.y - vPtMin.y + 1);
2215 if (pvDescent)
2216 *pvDescent = vFM.lMaxDescender;
2217 if (pvExternalLeading)
2218 *pvExternalLeading = vFM.lExternalLeading;
2219 }
2220
2221 void wxDC::SetMapMode(
2222 int nMode
2223 )
2224 {
2225 int nPixelWidth = 0;
2226 int nPixelHeight = 0;
2227 int nMmWidth = 1;
2228 int nMmHeight = 1;
2229 LONG lArray[CAPS_VERTICAL_RESOLUTION];
2230
2231 m_mappingMode = nMode;
2232
2233 if(::DevQueryCaps( m_hDC
2234 ,CAPS_FAMILY
2235 ,CAPS_VERTICAL_RESOLUTION
2236 ,lArray
2237 ))
2238 {
2239 LONG lHorzRes;
2240 LONG lVertRes;
2241
2242 nPixelWidth = lArray[CAPS_WIDTH];
2243 nPixelHeight = lArray[CAPS_HEIGHT];
2244 lHorzRes = lArray[CAPS_HORIZONTAL_RESOLUTION]; // returns pel/meter
2245 lVertRes = lArray[CAPS_VERTICAL_RESOLUTION]; // returns pel/meter
2246 nMmWidth = (lHorzRes/1000) * nPixelWidth;
2247 nMmWidth = (lVertRes/1000) * nPixelHeight;
2248 }
2249 if ((nPixelWidth == 0) || (nPixelHeight == 0) || (nMmWidth == 0) || (nMmHeight == 0))
2250 {
2251 return;
2252 }
2253
2254 double dMm2pixelsX = nPixelWidth/nMmWidth;
2255 double dMm2pixelsY = nPixelHeight/nMmHeight;
2256
2257 switch (nMode)
2258 {
2259 case wxMM_TWIPS:
2260 m_logicalScaleX = (twips2mm * dMm2pixelsX);
2261 m_logicalScaleY = (twips2mm * dMm2pixelsY);
2262 break;
2263
2264 case wxMM_POINTS:
2265 m_logicalScaleX = (pt2mm * dMm2pixelsX);
2266 m_logicalScaleY = (pt2mm * dMm2pixelsY);
2267 break;
2268
2269 case wxMM_METRIC:
2270 m_logicalScaleX = dMm2pixelsX;
2271 m_logicalScaleY = dMm2pixelsY;
2272 break;
2273
2274 case wxMM_LOMETRIC:
2275 m_logicalScaleX = (dMm2pixelsX/10.0);
2276 m_logicalScaleY = (dMm2pixelsY/10.0);
2277 break;
2278
2279 case wxMM_TEXT:
2280 default:
2281 m_logicalScaleX = 1.0;
2282 m_logicalScaleY = 1.0;
2283 break;
2284 }
2285 SIZEL vSize;
2286 ULONG ulOptions;
2287
2288 ulOptions = ::GpiQueryPS(m_hPS, &vSize);
2289 if (!ulOptions & PU_ARBITRARY)
2290 {
2291 ulOptions = PU_ARBITRARY | GPIF_DEFAULT;
2292 ::GpiSetPS(m_hPS, &vSize, ulOptions);
2293 }
2294 m_nWindowExtX = (int)MS_XDEV2LOG(VIEWPORT_EXTENT);
2295 m_nWindowExtY = (int)MS_YDEV2LOG(VIEWPORT_EXTENT);
2296 // ????
2297 }; // end of wxDC::SetMapMode
2298
2299 void wxDC::SetUserScale( double dX,
2300 double dY )
2301 {
2302 m_userScaleX = dX;
2303 m_userScaleY = dY;
2304
2305 SetMapMode(m_mappingMode);
2306 } // end of wxDC::SetUserScale
2307
2308 void wxDC::SetAxisOrientation( bool bXLeftRight,
2309 bool bYBottomUp )
2310 {
2311 m_signX = bXLeftRight ? 1 : -1;
2312 m_signY = bYBottomUp ? -1 : 1;
2313
2314 SetMapMode(m_mappingMode);
2315 } // end of wxDC::SetAxisOrientation
2316
2317 void wxDC::SetSystemScale(
2318 double dX
2319 , double dY
2320 )
2321 {
2322 m_scaleX = dX;
2323 m_scaleY = dY;
2324
2325 SetMapMode(m_mappingMode);
2326 } // end of wxDC::SetSystemScale
2327
2328 void wxDC::SetLogicalOrigin(
2329 wxCoord vX
2330 , wxCoord vY
2331 )
2332 {
2333 RECTL vRect;
2334
2335 ::GpiQueryPageViewport( m_hPS
2336 ,&vRect
2337 );
2338 vRect.xRight -= vX;
2339 vRect.yTop += vY;
2340 vRect.xLeft = vX;
2341 vRect.yBottom = vY;
2342 ::GpiSetPageViewport( m_hPS
2343 ,&vRect
2344 );
2345 }; // end of wxDC::SetLogicalOrigin
2346
2347 void wxDC::SetDeviceOrigin(
2348 wxCoord vX
2349 , wxCoord vY
2350 )
2351 {
2352 RECTL vRect;
2353
2354 m_deviceOriginX = vX;
2355 m_deviceOriginY = vY;
2356 ::GpiQueryPageViewport( m_hPS
2357 ,&vRect
2358 );
2359 vRect.xLeft += vX;
2360 vRect.xRight += vX;
2361 vRect.yBottom -= vY;
2362 vRect.yTop -= vY;
2363 ::GpiSetPageViewport( m_hPS
2364 ,&vRect
2365 );
2366 }; // end of wxDC::SetDeviceOrigin
2367
2368 // ---------------------------------------------------------------------------
2369 // coordinates transformations
2370 // ---------------------------------------------------------------------------
2371
2372 wxCoord wxDCBase::DeviceToLogicalX(wxCoord x) const
2373 {
2374 return (wxCoord) (((x) - m_deviceOriginX)/(m_logicalScaleX*m_userScaleX*m_signX*m_scaleX) - m_logicalOriginX);
2375 }
2376
2377 wxCoord wxDCBase::DeviceToLogicalXRel(wxCoord x) const
2378 {
2379 // axis orientation is not taken into account for conversion of a distance
2380 return (wxCoord) ((x)/(m_logicalScaleX*m_userScaleX*m_scaleX));
2381 }
2382
2383 wxCoord wxDCBase::DeviceToLogicalY(wxCoord y) const
2384 {
2385 return (wxCoord) (((y) - m_deviceOriginY)/(m_logicalScaleY*m_userScaleY*m_signY*m_scaleY) - m_logicalOriginY);
2386 }
2387
2388 wxCoord wxDCBase::DeviceToLogicalYRel(wxCoord y) const
2389 {
2390 // axis orientation is not taken into account for conversion of a distance
2391 return (wxCoord) ((y)/(m_logicalScaleY*m_userScaleY*m_scaleY));
2392 }
2393
2394 wxCoord wxDCBase::LogicalToDeviceX(wxCoord x) const
2395 {
2396 return (wxCoord) ((x - m_logicalOriginX)*m_logicalScaleX*m_userScaleX*m_signX*m_scaleX + m_deviceOriginX);
2397 }
2398
2399 wxCoord wxDCBase::LogicalToDeviceXRel(wxCoord x) const
2400 {
2401 // axis orientation is not taken into account for conversion of a distance
2402 return (wxCoord) (x*m_logicalScaleX*m_userScaleX*m_scaleX);
2403 }
2404
2405 wxCoord wxDCBase::LogicalToDeviceY(wxCoord y) const
2406 {
2407 return (wxCoord) ((y - m_logicalOriginY)*m_logicalScaleY*m_userScaleY*m_signY*m_scaleY + m_deviceOriginY);
2408 }
2409
2410 wxCoord wxDCBase::LogicalToDeviceYRel(wxCoord y) const
2411 {
2412 // axis orientation is not taken into account for conversion of a distance
2413 return (wxCoord) (y*m_logicalScaleY*m_userScaleY*m_scaleY);
2414 }
2415
2416 // ---------------------------------------------------------------------------
2417 // bit blit
2418 // ---------------------------------------------------------------------------
2419
2420 bool wxDC::DoBlit( wxCoord vXdest,
2421 wxCoord vYdest,
2422 wxCoord vWidth,
2423 wxCoord vHeight,
2424 wxDC* pSource,
2425 wxCoord vXsrc,
2426 wxCoord vYsrc,
2427 int nRop,
2428 bool bUseMask,
2429 wxCoord WXUNUSED(vXsrcMask),
2430 wxCoord WXUNUSED(vYsrcMask) )
2431 {
2432 wxMask* pMask = NULL;
2433 CHARBUNDLE vCbnd;
2434 COLORREF vOldTextColor;
2435 COLORREF vOldBackground = ::GpiQueryBackColor(m_hPS);
2436
2437 if (bUseMask)
2438 {
2439 const wxBitmap& rBmp = pSource->m_vSelectedBitmap;
2440
2441 pMask = rBmp.GetMask();
2442 if (!(rBmp.Ok() && pMask && pMask->GetMaskBitmap()))
2443 {
2444 bUseMask = false;
2445 }
2446 }
2447
2448 ::GpiQueryAttrs( m_hPS
2449 ,PRIM_CHAR
2450 ,CBB_COLOR
2451 ,&vCbnd
2452 );
2453 vOldTextColor = (COLORREF)vCbnd.lColor;
2454
2455 if (m_textForegroundColour.Ok())
2456 {
2457 vCbnd.lColor = (LONG)m_textForegroundColour.GetPixel();
2458 ::GpiSetAttrs( m_hPS // presentation-space handle
2459 ,PRIM_CHAR // Char primitive.
2460 ,CBB_COLOR // sets color.
2461 ,0
2462 ,&vCbnd // buffer for attributes.
2463 );
2464 }
2465 if (m_textBackgroundColour.Ok())
2466 {
2467 ::GpiSetBackColor(m_hPS, (LONG)m_textBackgroundColour.GetPixel());
2468 }
2469
2470 LONG lRop = ROP_SRCCOPY;
2471
2472 switch (nRop)
2473 {
2474 case wxXOR: lRop = ROP_SRCINVERT; break;
2475 case wxINVERT: lRop = ROP_DSTINVERT; break;
2476 case wxOR_REVERSE: lRop = 0x00DD0228; break;
2477 case wxAND_REVERSE: lRop = ROP_SRCERASE; break;
2478 case wxCLEAR: lRop = ROP_ZERO; break;
2479 case wxSET: lRop = ROP_ONE; break;
2480 case wxOR_INVERT: lRop = ROP_MERGEPAINT; break;
2481 case wxAND: lRop = ROP_SRCAND; break;
2482 case wxOR: lRop = ROP_SRCPAINT; break;
2483 case wxEQUIV: lRop = 0x00990066; break;
2484 case wxNAND: lRop = 0x007700E6; break;
2485 case wxAND_INVERT: lRop = 0x00220326; break;
2486 case wxCOPY: lRop = ROP_SRCCOPY; break;
2487 case wxNO_OP: lRop = ROP_NOTSRCERASE; break;
2488 case wxSRC_INVERT: lRop = ROP_SRCINVERT; break;
2489 case wxNOR: lRop = ROP_NOTSRCCOPY; break;
2490 default:
2491 wxFAIL_MSG( wxT("unsupported logical function") );
2492 return false;
2493 }
2494
2495 bool bSuccess;
2496
2497 if (bUseMask)
2498 {
2499 //
2500 // Blit bitmap with mask
2501 //
2502
2503 //
2504 // Create a temp buffer bitmap and DCs/PSs to access it and the mask
2505 //
2506 HDC hDCMask;
2507 HDC hDCBuffer;
2508 HPS hPSMask;
2509 HPS hPSBuffer;
2510 DEVOPENSTRUC vDOP = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
2511 BITMAPINFOHEADER2 vBmpHdr;
2512 HBITMAP hBufBitmap;
2513 SIZEL vSize = {0, 0};
2514 LONG rc;
2515
2516 memset(&vBmpHdr, 0, sizeof(BITMAPINFOHEADER2));
2517 vBmpHdr.cbFix = sizeof(BITMAPINFOHEADER2);
2518 vBmpHdr.cx = vWidth;
2519 vBmpHdr.cy = vHeight;
2520 vBmpHdr.cPlanes = 1;
2521 vBmpHdr.cBitCount = 24;
2522
2523 #if wxUSE_DC_CACHEING
2524 {
2525 //
2526 // create a temp buffer bitmap and DCs to access it and the mask
2527 //
2528 wxDCCacheEntry* pDCCacheEntry1 = FindDCInCache( NULL
2529 ,pSource->GetHPS()
2530 );
2531 wxDCCacheEntry* pDCCacheEntry2 = FindDCInCache( pDCCacheEntry1
2532 ,GetHPS()
2533 );
2534 wxDCCacheEntry* pBitmapCacheEntry = FindBitmapInCache( GetHPS()
2535 ,vWidth
2536 ,vHeight
2537 );
2538
2539 hPSMask = pDCCacheEntry1->m_hPS;
2540 hDCBuffer = (HDC)pDCCacheEntry2->m_hPS;
2541 hBufBitmap = (HBITMAP)pBitmapCacheEntry->m_hBitmap;
2542 wxUnusedVar(hDCMask);
2543 }
2544 #else
2545 {
2546 hDCMask = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDOP, NULLHANDLE);
2547 hDCBuffer = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDOP, NULLHANDLE);
2548 hPSMask = ::GpiCreatePS(vHabmain, hDCMask, &vSize, PU_PELS | GPIT_MICRO | GPIA_ASSOC);
2549 hPSBuffer = ::GpiCreatePS(vHabmain, hDCBuffer, &vSize, PU_PELS | GPIT_MICRO | GPIA_ASSOC);
2550 hBufBitmap = ::GpiCreateBitmap(GetHPS(), &vBmpHdr, 0L, NULL, NULL);
2551 }
2552 #endif
2553
2554 POINTL aPoint1[4] = { {0, 0}
2555 ,{vWidth, vHeight}
2556 ,{vXdest, vYdest}
2557 ,{vXdest + vWidth, vYdest + vHeight}
2558 };
2559 POINTL aPoint2[4] = { {0, 0}
2560 ,{vWidth, vHeight}
2561 ,{vXsrc, vYsrc}
2562 ,{vXsrc + vWidth, vYsrc + vHeight}
2563 };
2564 POINTL aPoint3[4] = { {vXdest, vYdest}
2565 ,{vXdest + vWidth, vYdest + vHeight}
2566 ,{vXsrc, vYsrc}
2567 ,{vXsrc + vWidth, vYsrc + vHeight}
2568 };
2569 POINTL aPoint4[4] = { {vXdest, vYdest}
2570 ,{vXdest + vWidth, vYdest + vHeight}
2571 ,{0, 0}
2572 ,{vWidth, vHeight}
2573 };
2574 ::GpiSetBitmap(hPSMask, (HBITMAP) pMask->GetMaskBitmap());
2575 ::GpiSetBitmap(hPSBuffer, (HBITMAP) hBufBitmap);
2576
2577 //
2578 // Copy dest to buffer
2579 //
2580 rc = ::GpiBitBlt( hPSBuffer
2581 ,GetHPS()
2582 ,4L
2583 ,aPoint1
2584 ,ROP_SRCCOPY
2585 ,BBO_IGNORE
2586 );
2587 if (rc == GPI_ERROR)
2588 {
2589 wxLogLastError(wxT("BitBlt"));
2590 }
2591
2592 //
2593 // Copy src to buffer using selected raster op
2594 //
2595 rc = ::GpiBitBlt( hPSBuffer
2596 ,GetHPS()
2597 ,4L
2598 ,aPoint2
2599 ,lRop
2600 ,BBO_IGNORE
2601 );
2602 if (rc == GPI_ERROR)
2603 {
2604 wxLogLastError(wxT("BitBlt"));
2605 }
2606
2607 //
2608 // Set masked area in buffer to BLACK (pixel value 0)
2609 //
2610 COLORREF vPrevBkCol = ::GpiQueryBackColor(GetHPS());
2611 COLORREF vPrevCol = ::GpiQueryColor(GetHPS());
2612
2613 ::GpiSetBackColor(GetHPS(), OS2RGB(255, 255, 255));
2614 ::GpiSetColor(GetHPS(), OS2RGB(0, 0, 0));
2615
2616 rc = ::GpiBitBlt( hPSBuffer
2617 ,hPSMask
2618 ,4L
2619 ,aPoint2
2620 ,ROP_SRCAND
2621 ,BBO_IGNORE
2622 );
2623 if (rc == GPI_ERROR)
2624 {
2625 wxLogLastError(wxT("BitBlt"));
2626 }
2627
2628 //
2629 // Set unmasked area in dest to BLACK
2630 //
2631 ::GpiSetBackColor(GetHPS(), OS2RGB(0, 0, 0));
2632 ::GpiSetColor(GetHPS(), OS2RGB(255, 255, 255));
2633 rc = ::GpiBitBlt( GetHPS()
2634 ,hPSMask
2635 ,4L
2636 ,aPoint3
2637 ,ROP_SRCAND
2638 ,BBO_IGNORE
2639 );
2640 if (rc == GPI_ERROR)
2641 {
2642 wxLogLastError(wxT("BitBlt"));
2643 }
2644
2645 //
2646 // Restore colours to original values
2647 //
2648 ::GpiSetBackColor(GetHPS(), vPrevBkCol);
2649 ::GpiSetColor(GetHPS(), vPrevCol);
2650
2651 //
2652 // OR buffer to dest
2653 //
2654 rc = ::GpiBitBlt( GetHPS()
2655 ,hPSMask
2656 ,4L
2657 ,aPoint4
2658 ,ROP_SRCPAINT
2659 ,BBO_IGNORE
2660 );
2661 if (rc == GPI_ERROR)
2662 {
2663 bSuccess = false;
2664 wxLogLastError(wxT("BitBlt"));
2665 }
2666
2667 //
2668 // Tidy up temporary DCs and bitmap
2669 //
2670 ::GpiSetBitmap(hPSMask, NULLHANDLE);
2671 ::GpiSetBitmap(hPSBuffer, NULLHANDLE);
2672 #if !wxUSE_DC_CACHEING
2673 ::GpiDestroyPS(hPSMask);
2674 ::GpiDestroyPS(hPSBuffer);
2675 ::DevCloseDC(hDCMask);
2676 ::DevCloseDC(hDCBuffer);
2677 ::GpiDeleteBitmap(hBufBitmap);
2678 #endif
2679 bSuccess = true;
2680 }
2681 else // no mask, just BitBlt() it
2682 {
2683 POINTL aPoint[4] = { {vXdest, vYdest}
2684 ,{vXdest + vWidth, vYdest + vHeight}
2685 ,{vXsrc, vYsrc}
2686 ,{vXsrc + vWidth, vYsrc + vHeight}
2687 };
2688
2689 bSuccess = (::GpiBitBlt( m_hPS
2690 ,pSource->GetHPS()
2691 ,4L
2692 ,aPoint
2693 ,lRop
2694 ,BBO_IGNORE
2695 ) != GPI_ERROR);
2696 if (!bSuccess )
2697 {
2698 wxLogLastError(wxT("BitBlt"));
2699 }
2700 }
2701 vCbnd.lColor = (LONG)vOldTextColor;
2702 ::GpiSetAttrs( m_hPS // presentation-space handle
2703 ,PRIM_CHAR // Char primitive.
2704 ,CBB_COLOR // sets color.
2705 ,0
2706 ,&vCbnd // buffer for attributes.
2707 );
2708 ::GpiSetBackColor(m_hPS, (LONG)vOldBackground);
2709 return bSuccess;
2710 }
2711
2712 void wxDC::DoGetSize( int* pnWidth,
2713 int* pnHeight ) const
2714 {
2715 LONG lArray[CAPS_HEIGHT];
2716
2717 if(::DevQueryCaps( m_hDC
2718 ,CAPS_FAMILY
2719 ,CAPS_HEIGHT
2720 ,lArray
2721 ))
2722 {
2723 *pnWidth = lArray[CAPS_WIDTH];
2724 *pnHeight = lArray[CAPS_HEIGHT];
2725 }
2726 }; // end of wxDC::DoGetSize(
2727
2728 void wxDC::DoGetSizeMM( int* pnWidth,
2729 int* pnHeight ) const
2730 {
2731 LONG lArray[CAPS_VERTICAL_RESOLUTION];
2732
2733 if(::DevQueryCaps( m_hDC
2734 ,CAPS_FAMILY
2735 ,CAPS_VERTICAL_RESOLUTION
2736 ,lArray
2737 ))
2738 {
2739 if(pnWidth)
2740 {
2741 int nWidth = lArray[CAPS_WIDTH];
2742 int nHorzRes = lArray[CAPS_HORIZONTAL_RESOLUTION]; // returns pel/meter
2743 *pnWidth = (nHorzRes/1000) * nWidth;
2744 }
2745
2746 if(pnHeight)
2747 {
2748 int nHeight = lArray[CAPS_HEIGHT];
2749 int nVertRes = lArray[CAPS_VERTICAL_RESOLUTION]; // returns pel/meter
2750 *pnHeight = (nVertRes/1000) * nHeight;
2751 }
2752 }
2753 }; // end of wxDC::DoGetSizeMM
2754
2755 wxSize wxDC::GetPPI() const
2756 {
2757 LONG lArray[CAPS_VERTICAL_RESOLUTION];
2758 int nWidth = 0;
2759 int nHeight = 0;
2760
2761 if(::DevQueryCaps( m_hDC
2762 ,CAPS_FAMILY
2763 ,CAPS_VERTICAL_RESOLUTION
2764 ,lArray
2765 ))
2766 {
2767 int nPelWidth;
2768 int nPelHeight;
2769 int nHorzRes;
2770 int nVertRes;
2771
2772 nPelWidth = lArray[CAPS_WIDTH];
2773 nPelHeight = lArray[CAPS_HEIGHT];
2774 nHorzRes = lArray[CAPS_HORIZONTAL_RESOLUTION]; // returns pel/meter
2775 nVertRes = lArray[CAPS_VERTICAL_RESOLUTION]; // returns pel/meter
2776 nWidth = (int)((nHorzRes/39.3) * nPelWidth);
2777 nHeight = (int)((nVertRes/39.3) * nPelHeight);
2778 }
2779 wxSize ppisize(nWidth, nHeight);
2780 return ppisize;
2781 } // end of wxDC::GetPPI
2782
2783 void wxDC::SetLogicalScale( double dX, double dY )
2784 {
2785 m_logicalScaleX = dX;
2786 m_logicalScaleY = dY;
2787 }; // end of wxDC::SetLogicalScale
wxWidgets (Impactor)