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More bitamp and image fixes
[wxWidgets.git] / src / os2 / dc.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: 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/module.h"
27 #endif
28
29 #include "wx/dcprint.h"
30
31 #include <string.h>
32 #include <math.h>
33
34 #include "wx/os2/private.h"
35
36 IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject)
37
38 //
39 // wxWindows uses the Microsoft convention that the origin is the UPPER left.
40 // Native OS/2 however in the GPI and PM define the origin as the LOWER left.
41 // In order to map OS/2 GPI/PM y coordinates to wxWindows coordinates we must
42 // perform the following transformation:
43 //
44 // Parent object height: POBJHEIGHT
45 // Desried origin: WXORIGINY
46 // Object to place's height: OBJHEIGHT
47 //
48 // To get the OS2 position from the wxWindows one:
49 //
50 // OS2Y = POBJHEIGHT - (WXORIGINY + OBJHEIGHT)
51 //
52 // For OS/2 wxDC's we will always determine m_vRclPaint as the size of the
53 // OS/2 Presentation Space associated with the device context. y is the
54 // desired application's y coordinate of the origin in wxWindows space.
55 // objy is the height of the object we are going to draw.
56 //
57 #define OS2Y(y, objy) ((m_vRclPaint.yTop - m_vRclPaint.yBottom) - (y + objy))
58
59 // ---------------------------------------------------------------------------
60 // constants
61 // ---------------------------------------------------------------------------
62
63 static const int VIEWPORT_EXTENT = 1000;
64
65 static const int MM_POINTS = 9;
66 static const int MM_METRIC = 10;
67
68 // usually this is defined in math.h
69 #ifndef M_PI
70 static const double M_PI = 3.14159265358979323846;
71 #endif // M_PI
72
73 // ---------------------------------------------------------------------------
74 // private functions
75 // ---------------------------------------------------------------------------
76
77 // convert degrees to radians
78 static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
79
80 int SetTextColor(
81 HPS hPS
82 , int nForegroundColour
83 )
84 {
85 CHARBUNDLE vCbnd;
86
87 vCbnd.lColor = nForegroundColour;
88 ::GpiSetAttrs( hPS // presentation-space handle
89 ,PRIM_CHAR // Char primitive.
90 ,CBB_COLOR // sets color.
91 ,0 //
92 ,&vCbnd // buffer for attributes.
93 );
94 return 0;
95 }
96
97 int QueryTextBkColor(
98 HPS hPS
99 )
100 {
101 CHARBUNDLE vCbnd;
102
103 ::GpiQueryAttrs( hPS // presentation-space handle
104 ,PRIM_CHAR // Char primitive.
105 ,CBB_BACK_COLOR // Background color.
106 ,&vCbnd // buffer for attributes.
107 );
108 return vCbnd.lBackColor;
109 }
110
111
112 int SetTextBkColor(
113 HPS hPS
114 , int nBackgroundColour
115 )
116 {
117 CHARBUNDLE vCbnd;
118 int rc;
119
120 rc = QueryTextBkColor(hPS);
121
122 vCbnd.lBackColor = nBackgroundColour;
123 ::GpiSetAttrs(hPS, // presentation-space handle
124 PRIM_CHAR, // Char primitive.
125 CBB_BACK_COLOR, // sets color.
126 0,
127 &vCbnd // buffer for attributes.
128 );
129 return rc;
130 }
131
132 int SetBkMode(
133 HPS hPS
134 , int nBackgroundMode
135 )
136 {
137 if(nBackgroundMode == wxTRANSPARENT)
138 ::GpiSetBackMix( hPS
139 ,BM_LEAVEALONE
140 );
141 else
142 // the background of the primitive takes over whatever is underneath.
143 ::GpiSetBackMix( hPS
144 ,BM_OVERPAINT
145 );
146 return 0;
147 }
148
149 // ===========================================================================
150 // implementation
151 // ===========================================================================
152
153 #if wxUSE_DC_CACHEING
154
155 /*
156 * This implementation is a bit ugly and uses the old-fashioned wxList class, so I will
157 * improve it in due course, either using arrays, or simply storing pointers to one
158 * entry for the bitmap, and two for the DCs. -- JACS
159 */
160
161 // ---------------------------------------------------------------------------
162 // wxDCCacheEntry
163 // ---------------------------------------------------------------------------
164
165 wxList wxDC::m_svBitmapCache;
166 wxList wxDC::m_svDCCache;
167
168 wxDCCacheEntry::wxDCCacheEntry(
169 WXHBITMAP hBitmap
170 , int nWidth
171 , int nHeight
172 , int nDepth
173 )
174 {
175 m_hBitmap = hBitmap;
176 m_hPS = NULLHANDLE;
177 m_nWidth = nWidth;
178 m_nHeight = nHeight;
179 m_nDepth = nDepth;
180 } // end of wxDCCacheEntry::wxDCCacheEntry
181
182 wxDCCacheEntry::wxDCCacheEntry(
183 HPS hPS
184 , int nDepth
185 )
186 {
187 m_hBitmap = NULLHANDLE;
188 m_hPS = hPS;
189 m_nWidth = 0;
190 m_nHeight = 0;
191 m_nDepth = nDepth;
192 } // end of wxDCCacheEntry::wxDCCacheEntry
193
194 wxDCCacheEntry::~wxDCCacheEntry()
195 {
196 if (m_hBitmap)
197 ::GpiDeleteBitmap(m_hBitmap);
198 if (m_hPS)
199 ::GpiDestroyPS(m_hPS);
200 } // end of wxDCCacheEntry::~wxDCCacheEntry
201
202 wxDCCacheEntry* wxDC::FindBitmapInCache(
203 HPS hPS
204 , int nWidth
205 , int nHeight
206 )
207 {
208 int nDepth = 24; // we'll fix this later ::GetDeviceCaps((HDC) dc, PLANES) * ::GetDeviceCaps((HDC) dc, BITSPIXEL);
209 wxNode* pNode = m_svBitmapCache.First();
210 BITMAPINFOHEADER2 vBmpHdr;
211
212 while(pNode)
213 {
214 wxDCCacheEntry* pEntry = (wxDCCacheEntry*)pNode->Data();
215
216 if (pEntry->m_nDepth == nDepth)
217 {
218 memset(&vBmpHdr, 0, sizeof(BITMAPINFOHEADER2));
219
220 if (pEntry->m_nWidth < nWidth || pEntry->m_nHeight < nHeight)
221 {
222 ::GpiDeleteBitmap((HBITMAP)pEntry->m_hBitmap);
223 vBmpHdr.cbFix = sizeof(BITMAPINFOHEADER2);
224 vBmpHdr.cx = nWidth;
225 vBmpHdr.cy = nHeight;
226 vBmpHdr.cPlanes = 1;
227 vBmpHdr.cBitCount = nDepth;
228
229 pEntry->m_hBitmap = (WXHBITMAP) ::GpiCreateBitmap( hPS
230 ,&vBmpHdr
231 ,0L, NULL, NULL
232 );
233 if (!pEntry->m_hBitmap)
234 {
235 wxLogLastError(wxT("CreateCompatibleBitmap"));
236 }
237 pEntry->m_nWidth = nWidth;
238 pEntry->m_nHeight = nHeight;
239 return pEntry;
240 }
241 return pEntry;
242 }
243 pNode = pNode->Next();
244 }
245 memset(&vBmpHdr, 0, sizeof(BITMAPINFOHEADER2));
246 vBmpHdr.cbFix = sizeof(BITMAPINFOHEADER2);
247 vBmpHdr.cx = nWidth;
248 vBmpHdr.cy = nHeight;
249 vBmpHdr.cPlanes = 1;
250 vBmpHdr.cBitCount = nDepth;
251
252 WXHBITMAP hBitmap = (WXHBITMAP) ::GpiCreateBitmap( hPS
253 ,&vBmpHdr
254 ,0L, NULL, NULL
255 );
256 if (!hBitmap)
257 {
258 wxLogLastError(wxT("CreateCompatibleBitmap"));
259 }
260 wxDCCacheEntry* pEntry = new wxDCCacheEntry( hBitmap
261 ,nWidth
262 ,nHeight
263 ,nDepth
264 );
265 AddToBitmapCache(pEntry);
266 return pEntry;
267 } // end of FindBitmapInCache
268
269 wxDCCacheEntry* wxDC::FindDCInCache(
270 wxDCCacheEntry* pNotThis
271 , HPS hPS
272 )
273 {
274 int nDepth = 24; // we'll fix this up later ::GetDeviceCaps((HDC) dc, PLANES) * ::GetDeviceCaps((HDC) dc, BITSPIXEL);
275 wxNode* pNode = m_svDCCache.First();
276
277 while(pNode)
278 {
279 wxDCCacheEntry* pEntry = (wxDCCacheEntry*)pNode->Data();
280
281 //
282 // Don't return the same one as we already have
283 //
284 if (!pNotThis || (pNotThis != pEntry))
285 {
286 if (pEntry->m_nDepth == nDepth)
287 {
288 return pEntry;
289 }
290 }
291 pNode = pNode->Next();
292 }
293 wxDCCacheEntry* pEntry = new wxDCCacheEntry( hPS
294 ,nDepth
295 );
296 AddToDCCache(pEntry);
297 return pEntry;
298 } // end of wxDC::FindDCInCache
299
300 void wxDC::AddToBitmapCache(
301 wxDCCacheEntry* pEntry
302 )
303 {
304 m_svBitmapCache.Append(pEntry);
305 } // end of wxDC::AddToBitmapCache
306
307 void wxDC::AddToDCCache(
308 wxDCCacheEntry* pEntry
309 )
310 {
311 m_svDCCache.Append(pEntry);
312 } // end of wxDC::AddToDCCache
313
314 void wxDC::ClearCache()
315 {
316 m_svBitmapCache.DeleteContents(TRUE);
317 m_svBitmapCache.Clear();
318 m_svBitmapCache.DeleteContents(FALSE);
319 m_svDCCache.DeleteContents(TRUE);
320 m_svDCCache.Clear();
321 m_svDCCache.DeleteContents(FALSE);
322 } // end of wxDC::ClearCache
323
324 // Clean up cache at app exit
325 class wxDCModule : public wxModule
326 {
327 public:
328 virtual bool OnInit() { return TRUE; }
329 virtual void OnExit() { wxDC::ClearCache(); }
330
331 private:
332 DECLARE_DYNAMIC_CLASS(wxDCModule)
333 }; // end of CLASS wxDCModule
334
335 IMPLEMENT_DYNAMIC_CLASS(wxDCModule, wxModule)
336
337 #endif // ndef for wxUSE_DC_CACHEING
338
339 // ---------------------------------------------------------------------------
340 // wxDC
341 // ---------------------------------------------------------------------------
342
343 wxDC::wxDC(void)
344 {
345 wxColour vColor;
346
347 m_pCanvas = NULL;
348
349 m_hOldBitmap = 0;
350 m_hOldPen = 0;
351 m_hOldBrush = 0;
352 m_hOldFont = 0;
353 m_hOldPalette = 0;
354
355 m_bOwnsDC = FALSE;
356 m_hDC = 0;
357 m_hOldPS = NULL;
358 m_hPS = NULL;
359 m_bIsPaintTime = FALSE; // True at Paint Time
360
361 vColor.InitFromName("BLACK");
362 m_pen.SetColour(vColor);
363 vColor.Set("WHITE");
364 m_brush.SetColour(vColor);
365 } // end of wxDC::wxDC
366
367 wxDC::~wxDC(void)
368 {
369 if ( m_hDC != 0 )
370 {
371 SelectOldObjects(m_hDC);
372
373 // if we own the HDC, we delete it, otherwise we just release it
374
375 if (m_bOwnsDC)
376 {
377 if(m_hPS)
378 {
379 ::GpiAssociate(m_hPS, NULLHANDLE);
380 ::GpiDestroyPS(m_hPS);
381 }
382 m_hPS = NULLHANDLE;
383 ::DevCloseDC((HDC)m_hDC);
384 }
385 else
386 {
387 //
388 // Just Dissacociate, not destroy if we don't own the DC
389 //
390 if(m_hPS)
391 {
392 ::GpiAssociate(m_hPS, NULLHANDLE);
393 }
394 }
395 }
396 } // end of wxDC::~wxDC
397
398 // This will select current objects out of the DC,
399 // which is what you have to do before deleting the
400 // DC.
401 void wxDC::SelectOldObjects(
402 WXHDC hPS
403 )
404 {
405 if (hPS)
406 {
407 if (m_hOldBitmap)
408 {
409 ::GpiSetBitmap(hPS, (HBITMAP) m_hOldBitmap);
410 if (m_vSelectedBitmap.Ok())
411 {
412 m_vSelectedBitmap.SetSelectedInto(NULL);
413 }
414 }
415 m_hOldBitmap = 0;
416 //
417 // OS/2 has no other native GDI objects to set in a PS/DC like windows
418 //
419 m_hOldPen = 0;
420 m_hOldBrush = 0;
421 m_hOldFont = 0;
422 m_hOldPalette = 0;
423 }
424
425 m_brush = wxNullBrush;
426 m_pen = wxNullPen;
427 m_palette = wxNullPalette;
428 m_font = wxNullFont;
429 m_backgroundBrush = wxNullBrush;
430 m_vSelectedBitmap = wxNullBitmap;
431 } // end of wxDC::SelectOldObjects
432
433 // ---------------------------------------------------------------------------
434 // clipping
435 // ---------------------------------------------------------------------------
436
437 #define DO_SET_CLIPPING_BOX() \
438 { \
439 RECTL rect; \
440 \
441 ::GpiQueryClipBox(m_hPS, &rect); \
442 \
443 m_clipX1 = (wxCoord) XDEV2LOG(rect.xLeft); \
444 m_clipY1 = (wxCoord) YDEV2LOG(rect.yTop); \
445 m_clipX2 = (wxCoord) XDEV2LOG(rect.xRight); \
446 m_clipY2 = (wxCoord) YDEV2LOG(rect.yBottom); \
447 }
448
449 void wxDC::DoSetClippingRegion(
450 wxCoord vX
451 , wxCoord vY
452 , wxCoord vWidth
453 , wxCoord vHeight
454 )
455 {
456 RECTL vRect;
457
458 vY = OS2Y(vY,vHeight);
459 m_clipping = TRUE;
460 vRect.xLeft = vX;
461 vRect.yTop = vY + vHeight;
462 vRect.xRight = vX + vWidth;
463 vRect.yBottom = vY;
464 ::GpiIntersectClipRectangle(m_hPS, &vRect);
465 DO_SET_CLIPPING_BOX()
466 } // end of wxDC::DoSetClippingRegion
467
468 void wxDC::DoSetClippingRegionAsRegion(
469 const wxRegion& rRegion
470 )
471 {
472 wxCHECK_RET(rRegion.GetHRGN(), wxT("invalid clipping region"));
473 HRGN hRgnOld;
474
475 m_clipping = TRUE;
476 ::GpiSetClipRegion( m_hPS
477 ,(HRGN)rRegion.GetHRGN()
478 ,&hRgnOld
479 );
480 DO_SET_CLIPPING_BOX()
481 } // end of wxDC::DoSetClippingRegionAsRegion
482
483 void wxDC::DestroyClippingRegion(void)
484 {
485 if (m_clipping && m_hPS)
486 {
487 HRGN hRgnOld;
488 RECTL vRect;
489
490 // TODO: this should restore the previous clipped region
491 // so that OnPaint processing works correctly, and
492 // the update doesn't get destroyed after the first
493 // DestroyClippingRegion
494 vRect.xLeft = XLOG2DEV(0);
495 vRect.yTop = YLOG2DEV(32000);
496 vRect.xRight = XLOG2DEV(32000);
497 vRect.yBottom = YLOG2DEV(0);
498
499 HRGN hRgn = ::GpiCreateRegion(m_hPS, 1, &vRect);
500
501 ::GpiSetClipRegion(m_hPS, hRgn, &hRgnOld);
502 }
503 m_clipping = FALSE;
504 } // end of wxDC::DestroyClippingRegion
505
506 // ---------------------------------------------------------------------------
507 // query capabilities
508 // ---------------------------------------------------------------------------
509
510 bool wxDC::CanDrawBitmap() const
511 {
512 return TRUE;
513 }
514
515 bool wxDC::CanGetTextExtent() const
516 {
517 LONG lTechnology = 0L;
518
519 ::DevQueryCaps(GetHDC(), CAPS_TECHNOLOGY, 1L, &lTechnology);
520 return (lTechnology == CAPS_TECH_RASTER_DISPLAY) || (lTechnology == CAPS_TECH_RASTER_PRINTER);
521 } // end of wxDC::CanGetTextExtent
522
523 int wxDC::GetDepth() const
524 {
525 LONG lArray[CAPS_COLOR_BITCOUNT];
526 int nBitsPerPixel;
527
528 if(::DevQueryCaps( GetHDC()
529 ,CAPS_FAMILY
530 ,CAPS_COLOR_BITCOUNT
531 ,lArray
532 ))
533 {
534 nBitsPerPixel = (int)lArray[CAPS_COLOR_BITCOUNT];
535 }
536 return nBitsPerPixel;
537 } // end of wxDC::GetDepth
538
539 // ---------------------------------------------------------------------------
540 // drawing
541 // ---------------------------------------------------------------------------
542
543 void wxDC::Clear()
544 {
545 //
546 // If this is a canvas DC then just fill with the background color
547 // Otherwise purge the whole thing
548 //
549 if (m_pCanvas)
550 {
551 RECTL vRect;
552
553 ::GpiQueryClipBox(m_hPS, &vRect);
554 ::WinFillRect(m_hPS, &vRect, ::GpiQueryBackColor(m_hPS));
555 }
556 else
557 ::GpiErase(m_hPS);
558 } // end of wxDC::Clear
559
560 bool wxDC::DoFloodFill(
561 wxCoord vX
562 , wxCoord vY
563 , const wxColour& rCol
564 , int nStyle
565 )
566 {
567 POINTL vPtlPos;
568 LONG lColor;
569 LONG lOptions;
570 LONG lHits;
571 bool bSuccess = FALSE;
572
573 vPtlPos.x = vX; // Loads x-coordinate
574 vPtlPos.y = OS2Y(vY,0); // Loads y-coordinate
575 ::GpiMove(m_hPS, &vPtlPos); // Sets current position
576 lColor = rCol.GetPixel();
577 lOptions = FF_BOUNDARY;
578 if(wxFLOOD_SURFACE == nStyle)
579 lOptions = FF_SURFACE;
580
581 if ((lHits = ::GpiFloodFill(m_hPS, lOptions, lColor)) != GPI_ERROR)
582 bSuccess = TRUE;
583 return TRUE;
584 } // end of wxDC::DoFloodFill
585
586 bool wxDC::DoGetPixel(
587 wxCoord vX
588 , wxCoord vY
589 , wxColour* pCol
590 ) const
591 {
592 POINTL vPoint;
593 LONG lColor;
594
595 vPoint.x = vX;
596 vPoint.y = OS2Y(vY,0);
597 lColor = ::GpiSetPel(m_hPS, &vPoint);
598
599 //
600 // Get the color of the pen
601 //
602 LONG lPencolor = 0x00ffffff;
603
604 if (m_pen.Ok())
605 {
606 lPencolor = m_pen.GetColour().GetPixel();
607 }
608
609 //
610 // return the color of the pixel
611 //
612 if(pCol)
613 pCol->Set( GetRValue(lColor)
614 ,GetGValue(lColor)
615 ,GetBValue(lColor)
616 );
617 return(lColor == lPencolor);
618 } // end of wxDC::DoGetPixel
619
620 void wxDC::DoCrossHair(
621 wxCoord vX
622 , wxCoord vY
623 )
624 {
625 vY = OS2Y(vY,0);
626
627 wxCoord vX1 = vX - VIEWPORT_EXTENT;
628 wxCoord vY1 = vY - VIEWPORT_EXTENT;
629 wxCoord vX2 = vX + VIEWPORT_EXTENT;
630 wxCoord vY2 = vY + VIEWPORT_EXTENT;
631 POINTL vPoint[4];
632
633 vPoint[0].x = vX1;
634 vPoint[0].y = vY;
635
636 vPoint[1].x = vX2;
637 vPoint[1].y = vY;
638
639 ::GpiMove(m_hPS, &vPoint[0]);
640 ::GpiLine(m_hPS, &vPoint[1]);
641
642 vPoint[2].x = vX;
643 vPoint[2].y = vY1;
644
645 vPoint[3].x = vX;
646 vPoint[3].y = vY2;
647
648 ::GpiMove(m_hPS, &vPoint[2]);
649 ::GpiLine(m_hPS, &vPoint[3]);
650 CalcBoundingBox(vX1, vY1);
651 CalcBoundingBox(vX2, vY2);
652 } // end of wxDC::DoCrossHair
653
654 void wxDC::DoDrawLine(
655 wxCoord vX1
656 , wxCoord vY1
657 , wxCoord vX2
658 , wxCoord vY2
659 )
660 {
661 POINTL vPoint[2];
662
663 vY1 = OS2Y(vY1,0);
664 vY2 = OS2Y(vY2,0);
665
666 vPoint[0].x = vX1;
667 vPoint[0].y = vY1;
668 vPoint[1].x = vX2;
669 vPoint[1].y = vY2;
670 ::GpiMove(m_hPS, &vPoint[0]);
671 ::GpiLine(m_hPS, &vPoint[1]);
672 CalcBoundingBox(vX1, vY1);
673 CalcBoundingBox(vX2, vY2);
674 } // end of wxDC::DoDrawLine
675
676 //////////////////////////////////////////////////////////////////////////////
677 // Draws an arc of a circle, centred on (xc, yc), with starting point (x1, y1)
678 // and ending at (x2, y2). The current pen is used for the outline and the
679 // current brush for filling the shape. The arc is drawn in an anticlockwise
680 // direction from the start point to the end point.
681 //////////////////////////////////////////////////////////////////////////////
682 void wxDC::DoDrawArc(
683 wxCoord vX1
684 , wxCoord vY1
685 , wxCoord vX2
686 , wxCoord vY2
687 , wxCoord vXc
688 , wxCoord vYc
689 )
690 {
691 POINTL vPtlPos;
692 POINTL vPtlArc[2]; // Structure for current position
693 int nDx;
694 int nDy;
695 double dRadius;
696 double dAngl1;
697 double dAngl2;
698 double dAnglmid;
699 wxCoord vXm;
700 wxCoord vYm;
701 ARCPARAMS vArcp; // Structure for arc parameters
702
703 if((vX1 == vXc && vY1 == vXc) || (vX2 == vXc && vY2 == vXc))
704 return; // Draw point ??
705 dRadius = 0.5 * ( hypot( (double)(vY1 - vYc)
706 ,(double)(vX1 - vXc)
707 ) +
708 hypot( (double)(vY2 - vYc)
709 ,(double)(vX2 - vXc)
710 )
711 );
712
713 dAngl1 = atan2( (double)(vY1 - vYc)
714 ,(double)(vX1 - vXc)
715 );
716 dAngl2 = atan2( (double)(vY2 - vYc)
717 ,(double)(vX2 - vXc)
718 );
719 if(dAngl2 < dAngl1)
720 dAngl2 += M_PI * 2;
721
722 //
723 // GpiPointArc can't draw full arc
724 //
725 if(dAngl2 == dAngl1 || (vX1 == vX2 && vY1 == vY2) )
726 {
727 //
728 // Medium point
729 //
730 dAnglmid = (dAngl1 + dAngl2)/2. + M_PI;
731 vXm = vXc + dRadius * cos(dAnglmid);
732 vYm = vYc + dRadius * sin(dAnglmid);
733 DoDrawArc( vX1, vY1
734 ,vXm, vYm
735 ,vXc, vYc
736 );
737 DoDrawArc( vXm, vYm
738 ,vX2, vY2
739 ,vXc, vYc
740 );
741 return;
742 }
743
744 //
745 // Medium point
746 //
747 dAnglmid = (dAngl1 + dAngl2)/2.;
748 vXm = vXc + dRadius * cos(dAnglmid);
749 vYm = vYc + dRadius * sin(dAnglmid);
750
751 //
752 // Ellipse main axis (r,q), (p,s) with center at (0,0) */
753 //
754 vArcp.lR = 0;
755 vArcp.lQ = 1;
756 vArcp.lP = 1;
757 vArcp.lS = 0;
758 ::GpiSetArcParams(m_hPS, &vArcp); // Sets parameters to default
759
760 vPtlPos.x = vX1; // Loads x-coordinate
761 vPtlPos.y = vY1; // Loads y-coordinate
762 ::GpiMove(m_hPS, &vPtlPos); // Sets current position
763 vPtlArc[0].x = vXm;
764 vPtlArc[0].y = vYm;
765 vPtlArc[1].x = vX2;
766 vPtlArc[1].y = vY2;
767 ::GpiPointArc(m_hPS, vPtlArc); // Draws the arc
768 CalcBoundingBox( (vXc - dRadius)
769 ,(vYc - dRadius)
770 );
771 CalcBoundingBox( (vXc + dRadius)
772 ,(vYc + dRadius)
773 );
774 } // end of wxDC::DoDrawArc
775
776 void wxDC::DoDrawCheckMark(
777 wxCoord vX1
778 , wxCoord vY1
779 , wxCoord vWidth
780 , wxCoord vHeight
781 )
782 {
783 POINTL vPoint[2];
784
785 vY1 = OS2Y(vY1,vHeight);
786
787 vPoint[0].x = vX1;
788 vPoint[0].y = vY1;
789 vPoint[1].x = vX1 + vWidth;
790 vPoint[1].y = vY1 + vHeight;
791
792 ::GpiMove(m_hPS, &vPoint[0]);
793 ::GpiBox( m_hPS // handle to a presentation space
794 ,DRO_OUTLINE // draw the box outline ? or ?
795 ,&vPoint[1] // address of the corner
796 ,0L // horizontal corner radius
797 ,0L // vertical corner radius
798 );
799 if(vWidth > 4 && vHeight > 4)
800 {
801 int nTmp;
802
803 vPoint[0].x += 2; vPoint[0].y += 2;
804 vPoint[1].x -= 2; vPoint[1].y -= 2;
805 ::GpiMove(m_hPS, &vPoint[0]);
806 ::GpiLine(m_hPS, &vPoint[1]);
807 nTmp = vPoint[0].x;
808 vPoint[0].x = vPoint[1].x;
809 vPoint[1].x = nTmp;
810 ::GpiMove(m_hPS, &vPoint[0]);
811 ::GpiLine(m_hPS, &vPoint[1]);
812 }
813 CalcBoundingBox( vX1
814 ,vY1
815 );
816
817 wxCoord vX2 = vX1 + vWidth;
818 wxCoord vY2 = vY1 + vHeight;
819
820 CalcBoundingBox( vX2
821 ,vY2
822 );
823 } // end of wxDC::DoDrawCheckMark
824
825 void wxDC::DoDrawPoint(
826 wxCoord vX
827 , wxCoord vY
828 )
829 {
830 POINTL vPoint;
831 COLORREF vColor = 0x00ffffff;
832
833 if (m_pen.Ok())
834 {
835 vColor = m_pen.GetColour().GetPixel();
836 }
837 ::GpiSetColor(m_hPS, vColor);
838 vPoint.x = vX;
839 vPoint.y = OS2Y(vY,0);
840 ::GpiSetPel(m_hPS, &vPoint);
841 CalcBoundingBox( vX
842 ,vY
843 );
844 } // end of wxDC::DoDrawPoint
845
846 void wxDC::DoDrawPolygon(
847 int n
848 , wxPoint vPoints[]
849 , wxCoord vXoffset
850 , wxCoord vYoffset
851 , int nFillStyle
852 )
853 {
854 ULONG ulCount = 1; // Number of polygons.
855 POLYGON vPlgn; // polygon.
856 ULONG flOptions = 0L; // Drawing options.
857
858 //////////////////////////////////////////////////////////////////////////////
859 // This contains fields of option bits... to draw boundary lines as well as
860 // the area interior.
861 //
862 // Drawing boundary lines:
863 // POLYGON_NOBOUNDARY Does not draw boundary lines.
864 // POLYGON_BOUNDARY Draws boundary lines (the default).
865 //
866 // Construction of the area interior:
867 // POLYGON_ALTERNATE Constructs interior in alternate mode
868 // (the default).
869 // POLYGON_WINDING Constructs interior in winding mode.
870 //////////////////////////////////////////////////////////////////////////////
871
872 ULONG flModel = 0L; // Drawing model.
873
874 //////////////////////////////////////////////////////////////////////////////
875 // Drawing model.
876 // POLYGON_INCL Fill is inclusive of bottom right (the default).
877 // POLYGON_EXCL Fill is exclusive of bottom right.
878 // This is provided to aid migration from other graphics models.
879 //////////////////////////////////////////////////////////////////////////////
880
881 LONG lHits = 0L; // Correlation/error indicator.
882 POINTL vPoint;
883 int i;
884 int nIsTRANSPARENT = 0;
885 LONG lBorderColor = 0L;
886 LONG lColor = 0L;
887
888 lBorderColor = m_pen.GetColour().GetPixel();
889 lColor = m_brush.GetColour().GetPixel();
890 if(m_brush.GetStyle() == wxTRANSPARENT)
891 nIsTRANSPARENT = 1;
892
893 vPlgn.ulPoints = n;
894 vPlgn.aPointl = (POINTL*) calloc( n + 1
895 ,sizeof(POINTL)
896 ); // well, new will call malloc
897
898 for(i = 0; i < n; i++)
899 {
900 vPlgn.aPointl[i].x = vPoints[i].x; // +xoffset;
901 vPlgn.aPointl[i].y = OS2Y(vPoints[i].y,0); // +yoffset;
902 }
903 flModel = POLYGON_BOUNDARY;
904 if(nFillStyle == wxWINDING_RULE)
905 flModel |= POLYGON_WINDING;
906 else
907 flModel |= POLYGON_ALTERNATE;
908
909 vPoint.x = vXoffset;
910 vPoint.y = OS2Y(vYoffset,0);
911
912 ::GpiSetColor(m_hPS, lBorderColor);
913 ::GpiMove(m_hPS, &vPoint);
914 lHits = ::GpiPolygons(m_hPS, ulCount, &vPlgn, flOptions, flModel);
915 free(vPlgn.aPointl);
916 } // end of wxDC::DoDrawPolygon
917
918 void wxDC::DoDrawLines(
919 int n
920 , wxPoint vPoints[]
921 , wxCoord vXoffset
922 , wxCoord vYoffset
923 )
924 {
925 POINTL vPoint;
926
927 if (vXoffset != 0L || vXoffset != 0L)
928 {
929 int i;
930
931 vPoint.x = vPoints[0].x + vXoffset;
932 vPoint.y = OS2Y(vPoints[0].y + vYoffset,0);
933 ::GpiMove(m_hPS, &vPoint);
934
935 LONG lBorderColor = m_pen.GetColour().GetPixel();
936
937 ::GpiSetColor(m_hPS, lBorderColor);
938 for(i = 1; i < n; i++)
939 {
940 vPoint.x = vPoints[i].x + vXoffset;
941 vPoint.y = OS2Y(vPoints[i].y + vYoffset,0);
942 ::GpiLine(m_hPS, &vPoint);
943 }
944 }
945 else
946 {
947 int i;
948
949 CalcBoundingBox( vPoints[i].x
950 ,vPoints[i].y
951 );
952 vPoint.x = vPoints[0].x;
953 vPoint.y = OS2Y(vPoints[0].y,0);
954 ::GpiMove(m_hPS, &vPoint);
955
956 for (i = 0; i < n; i++)
957 {
958 CalcBoundingBox( vPoints[i].x
959 ,vPoints[i].y
960 );
961 vPoint.x = vPoints[i].x;
962 vPoint.y = OS2Y(vPoints[i].y,0);
963 ::GpiLine(m_hPS, &vPoint);
964 }
965 }
966 } // end of wxDC::DoDrawLines
967
968 void wxDC::DoDrawRectangle(
969 wxCoord vX
970 , wxCoord vY
971 , wxCoord vWidth
972 , wxCoord vHeight
973 )
974 {
975 POINTL vPoint[2];
976 LONG lControl;
977 LONG lColor;
978 LONG lBorderColor;
979 int nIsTRANSPARENT = 0;
980
981 //
982 // Might be a memory DC with no Paint rect
983 //
984 if (!(m_vRclPaint.yTop == 0 &&
985 m_vRclPaint.yBottom == 0 &&
986 m_vRclPaint.xRight == 0 &&
987 m_vRclPaint.xLeft == 0))
988 vY = OS2Y(vY,vHeight);
989
990 wxCoord vX2 = vX + vWidth;
991 wxCoord vY2 = vY + vHeight;
992
993 vPoint[0].x = vX;
994 vPoint[0].y = vY;
995 vPoint[1].x = vX + vWidth;
996 vPoint[1].y = vY + vHeight;
997 ::GpiMove(m_hPS, &vPoint[0]);
998 lColor = m_brush.GetColour().GetPixel();
999 lBorderColor = m_pen.GetColour().GetPixel();
1000 if (m_brush.GetStyle() == wxTRANSPARENT)
1001 nIsTRANSPARENT = 1;
1002 if(lColor == lBorderColor || nIsTRANSPARENT)
1003 {
1004 lControl = DRO_OUTLINEFILL; //DRO_FILL;
1005 if(m_brush.GetStyle() == wxTRANSPARENT)
1006 lControl = DRO_OUTLINE;
1007
1008 ::GpiSetColor(m_hPS, lColor);
1009 ::GpiBox( m_hPS // handle to a presentation space
1010 ,lControl // draw the box outline ? or ?
1011 ,&vPoint[1] // address of the corner
1012 ,0L // horizontal corner radius
1013 ,0L // vertical corner radius
1014 );
1015 }
1016 else
1017 {
1018 lControl = DRO_OUTLINE;
1019 ::GpiSetColor( m_hPS
1020 ,lBorderColor
1021 );
1022 ::GpiBox( m_hPS
1023 ,lControl
1024 ,&vPoint[1]
1025 ,0L
1026 ,0L
1027 );
1028 lControl = DRO_FILL;
1029 ::GpiSetColor( m_hPS
1030 ,lColor
1031 );
1032 vPoint[0].x = vX + 1;
1033 vPoint[0].y = vY + 1;
1034 vPoint[1].x = vX + vWidth - 1;
1035 vPoint[1].y = vY + vHeight - 1;
1036 ::GpiMove(m_hPS, &vPoint[0]);
1037 ::GpiBox( m_hPS
1038 ,lControl
1039 ,&vPoint[1]
1040 ,0L
1041 ,0L
1042 );
1043 //
1044 // Debug testing:
1045 //
1046 if (m_vSelectedBitmap != wxNullBitmap)
1047 {
1048 BITMAPINFOHEADER2 vHeader;
1049 BITMAPINFO2 vInfo;
1050
1051 vHeader.cbFix = 16L;
1052 if (::GpiQueryBitmapInfoHeader(m_hPS, &vHeader))
1053 {
1054 int nBytesPerLine = vHeader.cBitCount/8;
1055 unsigned char* pucData = NULL;
1056 unsigned char* pucBits;
1057 LONG lScans = 0L;
1058
1059 vInfo.cbFix = 16;
1060 vInfo.cx = vHeader.cx;
1061 vInfo.cy = vHeader.cy;
1062 vInfo.cPlanes = vHeader.cPlanes;
1063 vInfo.cBitCount = vHeader.cBitCount;
1064 pucData = (unsigned char*)malloc(nBytesPerLine * vHeight);
1065 pucBits = pucData;
1066 for (int i = 0; i < vHeight; i++)
1067 {
1068 if (i <= m_vSelectedBitmap.GetHeight())
1069 {
1070 for (int j = 0; j < vWidth; j++)
1071 {
1072 if (j <= m_vSelectedBitmap.GetWidth())
1073 {
1074 vPoint[0].x = j; vPoint[0].y = i;
1075 lColor = ::GpiQueryPel(m_hPS, &vPoint[0]);
1076 *(pucBits++) = lColor >> 24;
1077 *(pucBits++) = lColor >> 16;
1078 *(pucBits++) = lColor >> 8;
1079 }
1080 }
1081 }
1082 }
1083 lScans = ::GpiSetBitmapBits( m_hPS
1084 ,0 // Start at the bottom
1085 ,(LONG)vHeight // One line per scan
1086 ,(PBYTE)pucData
1087 ,&vInfo
1088 );
1089 }
1090 }
1091 }
1092 CalcBoundingBox(vX, vY);
1093 CalcBoundingBox(vX2, vY2);
1094 } // end of wxDC::DoDrawRectangle
1095
1096 void wxDC::DoDrawRoundedRectangle(
1097 wxCoord vX
1098 , wxCoord vY
1099 , wxCoord vWidth
1100 , wxCoord vHeight
1101 , double dRadius
1102 )
1103 {
1104 POINTL vPoint[2];
1105 LONG lControl;
1106
1107 vY = OS2Y(vY,vHeight);
1108
1109 wxCoord vX2 = (vX + vWidth);
1110 wxCoord vY2 = (vY + vHeight);
1111
1112 vPoint[0].x = vX;
1113 vPoint[0].y = YLOG2DEV(vY) - vHeight;
1114 vPoint[1].x = vX + vWidth;
1115 vPoint[1].y = vY;
1116 ::GpiMove(m_hPS, &vPoint[0]);
1117
1118 lControl = DRO_OUTLINEFILL; //DRO_FILL;
1119 if (m_brush.GetStyle() == wxTRANSPARENT)
1120 lControl = DRO_OUTLINE;
1121 ::GpiBox( m_hPS // handle to a presentation space
1122 ,DRO_OUTLINE // draw the box outline ? or ?
1123 ,&vPoint[1] // address of the corner
1124 ,(LONG)dRadius // horizontal corner radius
1125 ,(LONG)dRadius // vertical corner radius
1126 );
1127 CalcBoundingBox(vX, vY);
1128 CalcBoundingBox(vX2, vY2);
1129 } // end of wxDC::DoDrawRoundedRectangle
1130
1131 // Draw Ellipse within box (x,y) - (x+width, y+height)
1132 void wxDC::DoDrawEllipse(
1133 wxCoord vX
1134 , wxCoord vY
1135 , wxCoord vWidth
1136 , wxCoord vHeight
1137 )
1138 {
1139 POINTL vPtlPos; // Structure for current position
1140 FIXED vFxMult; // Multiplier for ellipse
1141 ARCPARAMS vArcp; // Structure for arc parameters
1142
1143 vY = OS2Y(vY,vHeight);
1144
1145 vArcp.lR = 0;
1146 vArcp.lQ = vHeight/2;
1147 vArcp.lP = vWidth/2;
1148 vArcp.lS = 0;
1149 ::GpiSetArcParams( m_hPS
1150 ,&vArcp
1151 ); // Sets parameters to default
1152 vPtlPos.x = vX + vWidth/2; // Loads x-coordinate
1153 vPtlPos.y = vY + vHeight/2; // Loads y-coordinate
1154 ::GpiMove( m_hPS
1155 ,&vPtlPos
1156 ); // Sets current position
1157 vFxMult = MAKEFIXED(1, 0); /* Sets multiplier */
1158
1159 //
1160 // DRO_FILL, DRO_OTLINEFILL - where to get
1161 //
1162 ::GpiFullArc( m_hPS
1163 ,DRO_OUTLINE
1164 ,vFxMult
1165 ); // Draws full arc with center at current position
1166
1167 wxCoord vX2 = (vX + vWidth);
1168 wxCoord vY2 = (vY + vHeight);
1169
1170 CalcBoundingBox(vX, vY);
1171 CalcBoundingBox(vX2, vY2);
1172 } // end of wxDC::DoDrawEllipse
1173
1174 void wxDC::DoDrawEllipticArc(
1175 wxCoord vX
1176 , wxCoord vY
1177 , wxCoord vWidth
1178 , wxCoord vHeight
1179 , double dSa
1180 , double dEa
1181 )
1182 {
1183 POINTL vPtlPos; // Structure for current position
1184 FIXED vFxMult; // Multiplier for ellipse
1185 ARCPARAMS vArcp; // Structure for arc parameters
1186 FIXED vFSa;
1187 FIXED vFSweepa; // Start angle, sweep angle
1188 double dIntPart;
1189 double dFractPart;
1190 double dRadius;
1191
1192 vY = OS2Y(vY,vHeight);
1193
1194 dFractPart = modf(dSa,&dIntPart);
1195 vFSa = MAKEFIXED((int)dIntPart, (int)(dFractPart * 0xffff) );
1196 dFractPart = modf(dEa - dSa, &dIntPart);
1197 vFSweepa = MAKEFIXED((int)dIntPart, (int)(dFractPart * 0xffff) );
1198
1199 //
1200 // Ellipse main axis (r,q), (p,s) with center at (0,0)
1201 //
1202 vArcp.lR = 0;
1203 vArcp.lQ = vHeight/2;
1204 vArcp.lP = vWidth/2;
1205 vArcp.lS = 0;
1206 ::GpiSetArcParams(m_hPS, &vArcp); // Sets parameters to default
1207 vPtlPos.x = vX + vWidth/2 * (1. + cos(DegToRad(dSa))); // Loads x-coordinate
1208 vPtlPos.y = vY + vHeight/2 * (1. + sin(DegToRad(dSa))); // Loads y-coordinate
1209 ::GpiMove(m_hPS, &vPtlPos); // Sets current position
1210
1211 //
1212 // May be not to the center ?
1213 //
1214 vPtlPos.x = vX + vWidth/2 ; // Loads x-coordinate
1215 vPtlPos.y = vY + vHeight/2; // Loads y-coordinate
1216 vFxMult = MAKEFIXED(1, 0); // Sets multiplier
1217
1218 //
1219 // DRO_FILL, DRO_OTLINEFILL - where to get
1220 //
1221 ::GpiPartialArc( m_hPS
1222 ,&vPtlPos
1223 ,vFxMult
1224 ,vFSa
1225 ,vFSweepa
1226 );
1227 wxCoord vX2 = (vX + vWidth);
1228 wxCoord vY2 = (vY + vHeight);
1229
1230 CalcBoundingBox(vX, vY);
1231 CalcBoundingBox(vX2, vY2);
1232 } // end of wxDC::DoDrawEllipticArc
1233
1234 void wxDC::DoDrawIcon(
1235 const wxIcon& rIcon
1236 , wxCoord vX
1237 , wxCoord vY
1238 )
1239 {
1240 vY = OS2Y(vY,rIcon.GetHeight());
1241 wxCHECK_RET( rIcon.Ok(), wxT("invalid icon in DrawIcon") );
1242
1243 ::WinDrawPointer( GetHPS()
1244 ,vX
1245 ,vY
1246 ,(HPOINTER)GetHiconOf(rIcon)
1247 ,DP_NORMAL
1248 );
1249 CalcBoundingBox(vX, vY);
1250 CalcBoundingBox(vX + rIcon.GetWidth(), vY + rIcon.GetHeight());
1251 } // end of wxDC::DoDrawIcon
1252
1253 void wxDC::DoDrawBitmap(
1254 const wxBitmap& rBmp
1255 , wxCoord vX
1256 , wxCoord vY
1257 , bool bUseMask
1258 )
1259 {
1260 if (!bUseMask && !IsKindOf(CLASSINFO(wxPrinterDC)))
1261 {
1262 HBITMAP hBitmap = (HBITMAP)rBmp.GetHBITMAP();
1263 wxBitmap vNewBitmap( rBmp.GetWidth()
1264 ,rBmp.GetHeight()
1265 ,rBmp.GetDepth()
1266 );
1267 HBITMAP hBitmapOld = ::GpiSetBitmap((HPS)GetHPS(), vNewBitmap.GetHBITMAP());
1268 LONG lOldTextground = ::GpiQueryColor((HPS)GetHPS());
1269 LONG lOldBackground = ::GpiQueryBackColor((HPS)GetHPS());
1270
1271 if (m_textForegroundColour.Ok())
1272 {
1273 ::GpiSetColor( (HPS)GetHPS()
1274 ,m_textForegroundColour.GetPixel()
1275 );
1276 }
1277 if (m_textBackgroundColour.Ok())
1278 {
1279 ::GpiSetBackColor( (HPS)GetHPS()
1280 ,m_textBackgroundColour.GetPixel()
1281 );
1282 }
1283
1284 vY = OS2Y(vY,rBmp.GetHeight());
1285
1286 //
1287 // Flip the picture as OS/2 is upside-down
1288 //
1289 POINTL vPoint[4] = { vX, vY + rBmp.GetHeight()
1290 ,vX + rBmp.GetWidth(), vY
1291 ,0, 0
1292 ,rBmp.GetWidth(), rBmp.GetHeight()
1293 };
1294 ::GpiWCBitBlt( (HPS)GetHPS()
1295 ,hBitmap
1296 ,4
1297 ,vPoint
1298 ,ROP_SRCCOPY
1299 ,BBO_IGNORE
1300 );
1301 ::GpiSetBitmap((HPS)GetHPS(), hBitmapOld);
1302 ::GpiSetColor((HPS)GetHPS(), lOldTextground);
1303 ::GpiSetBackColor((HPS)GetHPS(), lOldBackground);
1304 }
1305 } // end of wxDC::DoDrawBitmap
1306
1307 void wxDC::DoDrawText(
1308 const wxString& rsText
1309 , wxCoord vX
1310 , wxCoord vY
1311 )
1312 {
1313 wxCoord vWidth;
1314 wxCoord vHeight;
1315
1316 DrawAnyText( rsText
1317 ,vX
1318 ,vY
1319 );
1320
1321 CalcBoundingBox(vX, vY);
1322 GetTextExtent(rsText, &vWidth, &vHeight);
1323 CalcBoundingBox((vX + vWidth), (vY + vHeight));
1324 } // end of wxDC::DoDrawText
1325
1326 void wxDC::DrawAnyText(
1327 const wxString& rsText
1328 , wxCoord vX
1329 , wxCoord vY
1330 )
1331 {
1332 int nOldBackground = 0;
1333 POINTL vPtlStart;
1334 LONG lHits;
1335 wxCoord vTextX = 0;
1336 wxCoord vTextY = 0;
1337
1338 //
1339 // prepare for drawing the text
1340 //
1341
1342 //
1343 // Set text color attributes
1344 //
1345 if (m_textForegroundColour.Ok())
1346 {
1347 SetTextColor( m_hPS
1348 ,(int)m_textForegroundColour.GetPixel()
1349 );
1350 }
1351
1352 if (m_textBackgroundColour.Ok())
1353 {
1354 nOldBackground = SetTextBkColor( m_hPS
1355 ,(int)m_textBackgroundColour.GetPixel()
1356 );
1357 }
1358 SetBkMode( m_hPS
1359 ,m_backgroundMode
1360 );
1361 GetTextExtent( rsText
1362 ,&vTextX
1363 ,&vTextY
1364 );
1365 vPtlStart.x = vX;
1366 vPtlStart.y = OS2Y(vY,vTextY);
1367
1368 lHits = ::GpiCharStringAt( m_hPS
1369 ,&vPtlStart
1370 ,rsText.length()
1371 ,(PCH)rsText.c_str()
1372 );
1373 if (lHits != GPI_OK)
1374 {
1375 wxLogLastError(wxT("TextOut"));
1376 }
1377
1378 //
1379 // Restore the old parameters (text foreground colour may be left because
1380 // it never is set to anything else, but background should remain
1381 // transparent even if we just drew an opaque string)
1382 //
1383 if (m_textBackgroundColour.Ok())
1384 SetTextBkColor( m_hPS
1385 ,nOldBackground
1386 );
1387 SetBkMode( m_hPS
1388 ,wxTRANSPARENT
1389 );
1390 }
1391
1392 void wxDC::DoDrawRotatedText(
1393 const wxString& rsText
1394 , wxCoord vX
1395 , wxCoord vY
1396 , double dAngle
1397 )
1398 {
1399 if (dAngle == 0.0)
1400 {
1401 DoDrawText( rsText
1402 ,vX
1403 ,vY
1404 );
1405 }
1406
1407 // TODO:
1408 /*
1409 if ( angle == 0.0 )
1410 {
1411 DoDrawText(text, x, y);
1412 }
1413 else
1414 {
1415 LOGFONT lf;
1416 wxFillLogFont(&lf, &m_font);
1417
1418 // GDI wants the angle in tenth of degree
1419 long angle10 = (long)(angle * 10);
1420 lf.lfEscapement = angle10;
1421 lf. lfOrientation = angle10;
1422
1423 HFONT hfont = ::CreateFontIndirect(&lf);
1424 if ( !hfont )
1425 {
1426 wxLogLastError("CreateFont");
1427 }
1428 else
1429 {
1430 HFONT hfontOld = ::SelectObject(GetHdc(), hfont);
1431
1432 DrawAnyText(text, x, y);
1433
1434 (void)::SelectObject(GetHdc(), hfontOld);
1435 }
1436
1437 // call the bounding box by adding all four vertices of the rectangle
1438 // containing the text to it (simpler and probably not slower than
1439 // determining which of them is really topmost/leftmost/...)
1440 wxCoord w, h;
1441 GetTextExtent(text, &w, &h);
1442
1443 double rad = DegToRad(angle);
1444
1445 // "upper left" and "upper right"
1446 CalcBoundingBox(x, y);
1447 CalcBoundingBox(x + w*cos(rad), y - h*sin(rad));
1448 CalcBoundingBox(x + h*sin(rad), y + h*cos(rad));
1449
1450 // "bottom left" and "bottom right"
1451 x += (wxCoord)(h*sin(rad));
1452 y += (wxCoord)(h*cos(rad));
1453 CalcBoundingBox(x, y);
1454 CalcBoundingBox(x + h*sin(rad), y + h*cos(rad));
1455 }
1456 */
1457 }
1458
1459 // ---------------------------------------------------------------------------
1460 // set GDI objects
1461 // ---------------------------------------------------------------------------
1462
1463 void wxDC::DoSelectPalette(
1464 bool bRealize
1465 )
1466 {
1467 //
1468 // Set the old object temporarily, in case the assignment deletes an object
1469 // that's not yet selected out.
1470 //
1471 if (m_hOldPalette)
1472 {
1473 m_hOldPalette = 0;
1474 }
1475
1476 if (m_palette.Ok())
1477 {
1478 HPALETTE hOldPal;
1479
1480 hOldPal = ::GpiSelectPalette((HDC) m_hPS, (HPALETTE) m_palette.GetHPALETTE());
1481 if (!m_hOldPalette)
1482 m_hOldPalette = (WXHPALETTE)hOldPal;
1483 }
1484 } // end of wxDC::DoSelectPalette
1485
1486 void wxDC::InitializePalette()
1487 {
1488 if (wxDisplayDepth() <= 8 )
1489 {
1490 //
1491 // Look for any window or parent that has a custom palette. If any has
1492 // one then we need to use it in drawing operations
1493 //
1494 wxWindow* pWin = m_pCanvas->GetAncestorWithCustomPalette();
1495
1496 m_hasCustomPalette = pWin && pWin->HasCustomPalette();
1497 if (m_hasCustomPalette)
1498 {
1499 m_palette = pWin->GetPalette();
1500
1501 //
1502 // turn on PM translation for this palette
1503 //
1504 DoSelectPalette();
1505 }
1506 }
1507 } // end of wxDC::InitializePalette
1508
1509 void wxDC::SetPalette(
1510 const wxPalette& rPalette
1511 )
1512 {
1513 if (m_hOldFont)
1514 {
1515 m_hOldFont = 0;
1516 }
1517 m_palette = rPalette;
1518 if (!rPalette.Ok())
1519 {
1520 if (m_hOldFont)
1521 {
1522 m_hOldFont = 0;
1523 }
1524 }
1525 HPALETTE hOldPal = ::GpiSelectPalette((HDC) m_hPS, (HPALETTE) m_palette.GetHPALETTE());
1526 if (!m_hOldPalette)
1527 m_hOldPalette = (WXHPALETTE)hOldPal;
1528 } // end of wxDC::SetPalette
1529
1530 void wxDC::SetFont(
1531 const wxFont& rFont
1532 )
1533 {
1534 //
1535 // Set the old object temporarily, in case the assignment deletes an object
1536 // that's not yet selected out.
1537 //
1538 if (m_hOldFont)
1539 {
1540 m_hOldFont = 0;
1541 }
1542 m_font = rFont;
1543 if (!rFont.Ok())
1544 {
1545 m_hOldFont = 0;
1546 }
1547
1548 m_font.SetPS(m_hPS); // this will realize the font
1549
1550 if (m_font.Ok())
1551 {
1552 HFONT hFont = m_font.GetResourceHandle();
1553 if (hFont == (HFONT) NULL)
1554 {
1555 wxLogDebug(wxT("::SelectObject failed in wxDC::SetFont."));
1556 }
1557 if (!m_hOldFont)
1558 m_hOldFont = (WXHFONT) hFont;
1559 }
1560 } // end of wxDC::SetFont
1561
1562 void wxDC::SetPen(
1563 const wxPen& rPen
1564 )
1565 {
1566 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1567
1568 if (m_pen == rPen)
1569 return;
1570 m_pen = rPen;
1571 if (!m_pen.Ok())
1572 return;
1573
1574 if (m_hOldPen)
1575 m_hOldPen = 0L;
1576 m_pen = rPen;
1577
1578 if (!m_pen.Ok())
1579 {
1580 if (m_hOldPen)
1581 {
1582 m_pen.SetPS((HPS)m_hOldPen);
1583 }
1584 m_hOldPen = 0L;
1585 }
1586
1587 if (m_pen.Ok())
1588 {
1589 if (m_pen.GetResourceHandle())
1590 {
1591 m_pen.SetPS(m_hPS);
1592 if (!m_hOldPen)
1593 m_hOldPen = m_pen.GetPS();
1594 }
1595 }
1596 }
1597
1598 void wxDC::SetBrush(
1599 const wxBrush& rBrush
1600 )
1601 {
1602 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1603
1604 if (m_hOldBrush)
1605 m_hOldBrush = 0L;
1606 m_brush = rBrush;
1607 if (!m_brush.Ok())
1608 if (m_brush == rBrush)
1609 return;
1610 if (!m_brush.Ok())
1611 if (m_hOldBrush)
1612 m_hOldBrush = 0L;
1613
1614 if (!m_brush.Ok())
1615 {
1616 if (m_hOldBrush)
1617 {
1618 m_brush.SetPS((HPS)m_hOldBrush);
1619 }
1620 m_hOldBrush = 0L;
1621 }
1622
1623 if (m_brush.Ok())
1624 {
1625 if (m_brush.GetResourceHandle())
1626 {
1627 m_brush.SetPS(m_hPS);
1628 if (!m_hOldBrush)
1629 m_hOldBrush = (WXHWND)m_brush.GetPS();
1630 }
1631 }
1632 } // end of wxDC::SetBrush
1633
1634 void wxDC::SetBackground(
1635 const wxBrush& rBrush
1636 )
1637 {
1638 m_backgroundBrush = rBrush;
1639 if (!m_backgroundBrush.Ok())
1640 return;
1641 if (m_pCanvas)
1642 {
1643 bool bCustomColours = TRUE;
1644
1645 //
1646 // If we haven't specified wxUSER_COLOURS, don't allow the panel/dialog box to
1647 // change background colours from the control-panel specified colours.
1648 //
1649 if (m_pCanvas->IsKindOf(CLASSINFO(wxWindow)) &&
1650 ((m_pCanvas->GetWindowStyleFlag() & wxUSER_COLOURS) != wxUSER_COLOURS))
1651 bCustomColours = FALSE;
1652 if (bCustomColours)
1653 {
1654 if (m_backgroundBrush.GetStyle()==wxTRANSPARENT)
1655 {
1656 m_pCanvas->SetTransparent(TRUE);
1657 }
1658 else
1659 {
1660 //
1661 // Setting the background brush of a DC
1662 // doesn't affect the window background colour. However,
1663 // I'm leaving in the transparency setting because it's needed by
1664 // various controls (e.g. wxStaticText) to determine whether to draw
1665 // transparently or not. TODO: maybe this should be a new function
1666 // wxWindow::SetTransparency(). Should that apply to the child itself, or the
1667 // parent?
1668 // m_canvas->SetBackgroundColour(m_backgroundBrush.GetColour());
1669 //
1670 m_pCanvas->SetTransparent(FALSE);
1671 }
1672 }
1673 }
1674 COLORREF vNewColor = m_backgroundBrush.GetColour().GetPixel();
1675 (void)::GpiSetBackColor((HPS)m_hPS, (LONG)vNewColor);
1676 } // end of wxDC::SetBackground
1677
1678 void wxDC::SetBackgroundMode(
1679 int nMode
1680 )
1681 {
1682 m_backgroundMode = nMode;
1683 } // end of wxDC::SetBackgroundMode
1684
1685 void wxDC::SetLogicalFunction(
1686 int nFunction
1687 )
1688 {
1689 m_logicalFunction = nFunction;
1690 SetRop((WXHDC)m_hDC);
1691 } // wxDC::SetLogicalFunction
1692
1693 void wxDC::SetRop(
1694 WXHDC hDC
1695 )
1696 {
1697 if (!hDC || m_logicalFunction < 0)
1698 return;
1699
1700 LONG lCRop;
1701 switch (m_logicalFunction)
1702 {
1703 case wxXOR:
1704 lCRop = FM_XOR;
1705 break;
1706
1707 case wxINVERT:
1708 lCRop = FM_INVERT;
1709 break;
1710
1711 case wxOR_REVERSE:
1712 lCRop = FM_MERGESRCNOT;
1713 break;
1714
1715 case wxAND_REVERSE:
1716 lCRop = FM_NOTMASKSRC;
1717 break;
1718
1719 case wxCLEAR:
1720 lCRop = FM_ONE;
1721 break;
1722
1723 case wxSET:
1724 lCRop = FM_ZERO;
1725 break;
1726
1727 case wxSRC_INVERT:
1728 lCRop = FM_MERGENOTSRC;
1729 break;
1730
1731 case wxOR_INVERT:
1732 lCRop = FM_MERGESRCNOT;
1733 break;
1734
1735 case wxAND:
1736 lCRop = FM_AND;
1737 break;
1738
1739 case wxOR:
1740 lCRop = FM_OR;
1741 break;
1742
1743 case wxAND_INVERT:
1744 lCRop = FM_SUBTRACT;
1745 break;
1746
1747 case wxEQUIV:
1748 case wxNAND:
1749 case wxCOPY:
1750 default:
1751 lCRop = FM_OVERPAINT;
1752 break;
1753 }
1754 ::GpiSetMix((HPS)hDC, lCRop);
1755 } // end of wxDC::SetRop
1756
1757 bool wxDC::StartDoc(
1758 const wxString& rsMessage
1759 )
1760 {
1761 // We might be previewing, so return TRUE to let it continue.
1762 return TRUE;
1763 } // end of wxDC::StartDoc
1764
1765 void wxDC::EndDoc()
1766 {
1767 } // end of wxDC::EndDoc
1768
1769 void wxDC::StartPage()
1770 {
1771 } // end of wxDC::StartPage
1772
1773 void wxDC::EndPage()
1774 {
1775 } // end of wxDC::EndPage
1776
1777 // ---------------------------------------------------------------------------
1778 // text metrics
1779 // ---------------------------------------------------------------------------
1780
1781 wxCoord wxDC::GetCharHeight() const
1782 {
1783 FONTMETRICS vFM; // metrics structure
1784
1785 ::GpiQueryFontMetrics( m_hPS
1786 ,sizeof(FONTMETRICS)
1787 ,&vFM
1788 );
1789 return YDEV2LOGREL(vFM.lXHeight);
1790 }
1791
1792 wxCoord wxDC::GetCharWidth() const
1793 {
1794 FONTMETRICS vFM; // metrics structure
1795
1796 ::GpiQueryFontMetrics( m_hPS
1797 ,sizeof(FONTMETRICS)
1798 ,&vFM
1799 );
1800 return XDEV2LOGREL(vFM.lAveCharWidth);
1801 }
1802
1803 void wxDC::DoGetTextExtent(
1804 const wxString& rsString
1805 , wxCoord* pvX
1806 , wxCoord* pvY
1807 , wxCoord* pvDescent
1808 , wxCoord* pvExternalLeading
1809 , wxFont* pTheFont
1810 ) const
1811 {
1812 POINTL avPoint[TXTBOX_COUNT];
1813 POINTL vPtMin;
1814 POINTL vPtMax;
1815 int i;
1816 int l;
1817 FONTMETRICS vFM; // metrics structure
1818 BOOL bRc;
1819 char* pStr;
1820 ERRORID vErrorCode; // last error id code
1821 wxFont* pFontToUse = (wxFont*)pTheFont;
1822
1823 char zMsg[128]; // DEBUG
1824 wxString sError;
1825
1826 if (!pFontToUse)
1827 pFontToUse = (wxFont*)&m_font;
1828 l = rsString.length();
1829 pStr = (PCH) rsString.c_str();
1830
1831 //
1832 // In world coordinates.
1833 //
1834 bRc = ::GpiQueryTextBox( m_hPS
1835 ,l
1836 ,pStr
1837 ,TXTBOX_COUNT // return maximum information
1838 ,avPoint // array of coordinates points
1839 );
1840 if(!bRc)
1841 {
1842 vErrorCode = ::WinGetLastError(wxGetInstance());
1843 sError = wxPMErrorToStr(vErrorCode);
1844 // DEBUG
1845 sprintf(zMsg, "GpiQueryTextBox for %s: failed with Error: %x - %s", pStr, vErrorCode, sError.c_str());
1846 (void)wxMessageBox( "wxWindows Menu sample"
1847 ,zMsg
1848 ,wxICON_INFORMATION
1849 );
1850 }
1851
1852 vPtMin.x = avPoint[0].x;
1853 vPtMax.x = avPoint[0].x;
1854 vPtMin.y = avPoint[0].y;
1855 vPtMax.y = avPoint[0].y;
1856 for (i = 1; i < 4; i++)
1857 {
1858 if(vPtMin.x > avPoint[i].x) vPtMin.x = avPoint[i].x;
1859 if(vPtMin.y > avPoint[i].y) vPtMin.y = avPoint[i].y;
1860 if(vPtMax.x < avPoint[i].x) vPtMax.x = avPoint[i].x;
1861 if(vPtMax.y < avPoint[i].y) vPtMax.y = avPoint[i].y;
1862 }
1863 ::GpiQueryFontMetrics( m_hPS
1864 ,sizeof(FONTMETRICS)
1865 ,&vFM
1866 );
1867
1868 if (pvX)
1869 *pvX = (wxCoord)(vPtMax.x - vPtMin.x + 1);
1870 if (pvY)
1871 *pvY = (wxCoord)(vPtMax.y - vPtMin.y + 1);
1872 if (pvDescent)
1873 *pvDescent = vFM.lMaxDescender;
1874 if (pvExternalLeading)
1875 *pvExternalLeading = vFM.lExternalLeading;
1876 }
1877
1878 void wxDC::SetMapMode(
1879 int nMode
1880 )
1881 {
1882 int nPixelWidth = 0;
1883 int nPixelHeight = 0;
1884 int nMmWidth = 1;
1885 int nMmHeight = 1;
1886 LONG lArray[CAPS_VERTICAL_RESOLUTION];
1887
1888 m_mappingMode = nMode;
1889
1890 if(::DevQueryCaps( m_hDC
1891 ,CAPS_FAMILY
1892 ,CAPS_VERTICAL_RESOLUTION
1893 ,lArray
1894 ))
1895 {
1896 LONG lHorzRes;
1897 LONG lVertRes;
1898
1899 nPixelWidth = lArray[CAPS_WIDTH];
1900 nPixelHeight = lArray[CAPS_HEIGHT];
1901 lHorzRes = lArray[CAPS_HORIZONTAL_RESOLUTION]; // returns pel/meter
1902 lVertRes = lArray[CAPS_VERTICAL_RESOLUTION]; // returns pel/meter
1903 nMmWidth = (lHorzRes/1000) * nPixelWidth;
1904 nMmWidth = (lVertRes/1000) * nPixelHeight;
1905 }
1906 if ((nPixelWidth == 0) || (nPixelHeight == 0) || (nMmWidth == 0) || (nMmHeight == 0))
1907 {
1908 return;
1909 }
1910
1911 double dMm2pixelsX = nPixelWidth/nMmWidth;
1912 double dMm2pixelsY = nPixelHeight/nMmHeight;
1913
1914 switch (nMode)
1915 {
1916 case wxMM_TWIPS:
1917 m_logicalScaleX = (twips2mm * dMm2pixelsX);
1918 m_logicalScaleY = (twips2mm * dMm2pixelsY);
1919 break;
1920
1921 case wxMM_POINTS:
1922 m_logicalScaleX = (pt2mm * dMm2pixelsX);
1923 m_logicalScaleY = (pt2mm * dMm2pixelsY);
1924 break;
1925
1926 case wxMM_METRIC:
1927 m_logicalScaleX = dMm2pixelsX;
1928 m_logicalScaleY = dMm2pixelsY;
1929 break;
1930
1931 case wxMM_LOMETRIC:
1932 m_logicalScaleX = (dMm2pixelsX/10.0);
1933 m_logicalScaleY = (dMm2pixelsY/10.0);
1934 break;
1935
1936 case wxMM_TEXT:
1937 default:
1938 m_logicalScaleX = 1.0;
1939 m_logicalScaleY = 1.0;
1940 break;
1941 }
1942 SIZEL vSize;
1943 ULONG ulOptions;
1944
1945 ulOptions = ::GpiQueryPS(m_hPS, &vSize);
1946 if (!ulOptions & PU_ARBITRARY)
1947 {
1948 ulOptions = PU_ARBITRARY | GPIF_DEFAULT;
1949 ::GpiSetPS(m_hPS, &vSize, ulOptions);
1950 }
1951 m_nWindowExtX = (int)MS_XDEV2LOG(VIEWPORT_EXTENT);
1952 m_nWindowExtY = (int)MS_YDEV2LOG(VIEWPORT_EXTENT);
1953 // ????
1954 }; // end of wxDC::SetMapMode
1955
1956 void wxDC::SetUserScale(
1957 double dX
1958 , double dY
1959 )
1960 {
1961 m_userScaleX = dX;
1962 m_userScaleY = dY;
1963
1964 SetMapMode(m_mappingMode);
1965 } // end of wxDC::SetUserScale
1966
1967 void wxDC::SetAxisOrientation(
1968 bool bXLeftRight
1969 , bool bYBottomUp
1970 )
1971 {
1972 m_signX = bXLeftRight ? 1 : -1;
1973 m_signY = bYBottomUp ? -1 : 1;
1974
1975 SetMapMode(m_mappingMode);
1976 } // end of wxDC::SetAxisOrientation
1977
1978 void wxDC::SetSystemScale(
1979 double dX
1980 , double dY
1981 )
1982 {
1983 m_scaleX = dX;
1984 m_scaleY = dY;
1985
1986 SetMapMode(m_mappingMode);
1987 } // end of wxDC::SetSystemScale
1988
1989 void wxDC::SetLogicalOrigin(
1990 wxCoord vX
1991 , wxCoord vY
1992 )
1993 {
1994 RECTL vRect;
1995
1996 ::GpiQueryPageViewport( m_hPS
1997 ,&vRect
1998 );
1999 vRect.xRight -= vX;
2000 vRect.yTop += vY;
2001 vRect.xLeft = vX;
2002 vRect.yBottom = vY;
2003 ::GpiSetPageViewport( m_hPS
2004 ,&vRect
2005 );
2006 }; // end of wxDC::SetLogicalOrigin
2007
2008 void wxDC::SetDeviceOrigin(
2009 wxCoord vX
2010 , wxCoord vY
2011 )
2012 {
2013 RECTL vRect;
2014
2015 m_deviceOriginX = vX;
2016 m_deviceOriginY = vY;
2017 ::GpiQueryPageViewport( m_hPS
2018 ,&vRect
2019 );
2020 vRect.xLeft += vX;
2021 vRect.xRight += vX;
2022 vRect.yBottom -= vY;
2023 vRect.yTop -= vY;
2024 ::GpiSetPageViewport( m_hPS
2025 ,&vRect
2026 );
2027 }; // end of wxDC::SetDeviceOrigin
2028
2029 // ---------------------------------------------------------------------------
2030 // coordinates transformations
2031 // ---------------------------------------------------------------------------
2032
2033 wxCoord wxDCBase::DeviceToLogicalX(wxCoord x) const
2034 {
2035 return (wxCoord) (((x) - m_deviceOriginX)/(m_logicalScaleX*m_userScaleX*m_signX*m_scaleX) - m_logicalOriginX);
2036 }
2037
2038 wxCoord wxDCBase::DeviceToLogicalXRel(wxCoord x) const
2039 {
2040 // axis orientation is not taken into account for conversion of a distance
2041 return (wxCoord) ((x)/(m_logicalScaleX*m_userScaleX*m_scaleX));
2042 }
2043
2044 wxCoord wxDCBase::DeviceToLogicalY(wxCoord y) const
2045 {
2046 return (wxCoord) (((y) - m_deviceOriginY)/(m_logicalScaleY*m_userScaleY*m_signY*m_scaleY) - m_logicalOriginY);
2047 }
2048
2049 wxCoord wxDCBase::DeviceToLogicalYRel(wxCoord y) const
2050 {
2051 // axis orientation is not taken into account for conversion of a distance
2052 return (wxCoord) ((y)/(m_logicalScaleY*m_userScaleY*m_scaleY));
2053 }
2054
2055 wxCoord wxDCBase::LogicalToDeviceX(wxCoord x) const
2056 {
2057 return (wxCoord) ((x - m_logicalOriginX)*m_logicalScaleX*m_userScaleX*m_signX*m_scaleX + m_deviceOriginX);
2058 }
2059
2060 wxCoord wxDCBase::LogicalToDeviceXRel(wxCoord x) const
2061 {
2062 // axis orientation is not taken into account for conversion of a distance
2063 return (wxCoord) (x*m_logicalScaleX*m_userScaleX*m_scaleX);
2064 }
2065
2066 wxCoord wxDCBase::LogicalToDeviceY(wxCoord y) const
2067 {
2068 return (wxCoord) ((y - m_logicalOriginY)*m_logicalScaleY*m_userScaleY*m_signY*m_scaleY + m_deviceOriginY);
2069 }
2070
2071 wxCoord wxDCBase::LogicalToDeviceYRel(wxCoord y) const
2072 {
2073 // axis orientation is not taken into account for conversion of a distance
2074 return (wxCoord) (y*m_logicalScaleY*m_userScaleY*m_scaleY);
2075 }
2076
2077 // ---------------------------------------------------------------------------
2078 // bit blit
2079 // ---------------------------------------------------------------------------
2080
2081 bool wxDC::DoBlit(
2082 wxCoord vXdest
2083 , wxCoord vYdest
2084 , wxCoord vWidth
2085 , wxCoord vHeight
2086 , wxDC* pSource
2087 , wxCoord vXsrc
2088 , wxCoord vYsrc
2089 , int nRop
2090 , bool bUseMask
2091 , wxCoord vXsrcMask
2092 , wxCoord vYsrcMask
2093 )
2094 {
2095 wxMask* pMask = NULL;
2096 CHARBUNDLE vCbnd;
2097 COLORREF vOldTextColor;
2098 COLORREF vOldBackground = ::GpiQueryBackColor(m_hPS);
2099
2100 if (bUseMask)
2101 {
2102 const wxBitmap& rBmp = pSource->m_vSelectedBitmap;
2103
2104 pMask = rBmp.GetMask();
2105 if (!(rBmp.Ok() && pMask && pMask->GetMaskBitmap()))
2106 {
2107 bUseMask = FALSE;
2108 }
2109 }
2110
2111 ::GpiQueryAttrs( m_hPS
2112 ,PRIM_CHAR
2113 ,CBB_COLOR
2114 ,&vCbnd
2115 );
2116 vOldTextColor = (COLORREF)vCbnd.lColor;
2117
2118 if (m_textForegroundColour.Ok())
2119 {
2120 vCbnd.lColor = (LONG)m_textForegroundColour.GetPixel();
2121 ::GpiSetAttrs( m_hPS // presentation-space handle
2122 ,PRIM_CHAR // Char primitive.
2123 ,CBB_COLOR // sets color.
2124 ,0
2125 ,&vCbnd // buffer for attributes.
2126 );
2127 }
2128 if (m_textBackgroundColour.Ok())
2129 {
2130 ::GpiSetBackColor(m_hPS, (LONG)m_textBackgroundColour.GetPixel());
2131 }
2132
2133 LONG lRop = ROP_SRCCOPY;
2134
2135 switch (nRop)
2136 {
2137 case wxXOR: lRop = ROP_SRCINVERT; break;
2138 case wxINVERT: lRop = ROP_DSTINVERT; break;
2139 case wxOR_REVERSE: lRop = 0x00DD0228; break;
2140 case wxAND_REVERSE: lRop = ROP_SRCERASE; break;
2141 case wxCLEAR: lRop = ROP_ZERO; break;
2142 case wxSET: lRop = ROP_ONE; break;
2143 case wxOR_INVERT: lRop = ROP_MERGEPAINT; break;
2144 case wxAND: lRop = ROP_SRCAND; break;
2145 case wxOR: lRop = ROP_SRCPAINT; break;
2146 case wxEQUIV: lRop = 0x00990066; break;
2147 case wxNAND: lRop = 0x007700E6; break;
2148 case wxAND_INVERT: lRop = 0x00220326; break;
2149 case wxCOPY: lRop = ROP_SRCCOPY; break;
2150 case wxNO_OP: lRop = ROP_NOTSRCERASE; break;
2151 case wxSRC_INVERT: lRop = ROP_SRCINVERT; break;
2152 case wxNOR: lRop = ROP_NOTSRCCOPY; break;
2153 default:
2154 wxFAIL_MSG( wxT("unsupported logical function") );
2155 return FALSE;
2156 }
2157
2158 bool bSuccess;
2159
2160 if (bUseMask)
2161 {
2162 //
2163 // Blit bitmap with mask
2164 //
2165
2166 //
2167 // Create a temp buffer bitmap and DCs/PSs to access it and the mask
2168 //
2169 HDC hDCMask;
2170 HDC hDCBuffer;
2171 HPS hPSMask;
2172 HPS hPSBuffer;
2173 DEVOPENSTRUC vDOP = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
2174 BITMAPINFOHEADER2 vBmpHdr;
2175 HBITMAP hBufBitmap;
2176 SIZEL vSize = {0, 0};
2177 LONG rc;
2178
2179 memset(&vBmpHdr, 0, sizeof(BITMAPINFOHEADER2));
2180 vBmpHdr.cbFix = sizeof(BITMAPINFOHEADER2);
2181 vBmpHdr.cx = vWidth;
2182 vBmpHdr.cy = vHeight;
2183 vBmpHdr.cPlanes = 1;
2184 vBmpHdr.cBitCount = 24;
2185
2186 #if wxUSE_DC_CACHEING
2187 if (TRUE)
2188 {
2189 //
2190 // create a temp buffer bitmap and DCs to access it and the mask
2191 //
2192 wxDCCacheEntry* pDCCacheEntry1 = FindDCInCache( NULL
2193 ,pSource->GetHPS()
2194 );
2195 wxDCCacheEntry* pDCCacheEntry2 = FindDCInCache( pDCCacheEntry1
2196 ,GetHPS()
2197 );
2198 wxDCCacheEntry* pBitmapCacheEntry = FindBitmapInCache( GetHPS()
2199 ,vWidth
2200 ,vHeight
2201 );
2202
2203 hPSMask = pDCCacheEntry1->m_hPS;
2204 hDCBuffer = (HDC)pDCCacheEntry2->m_hPS;
2205 hBufBitmap = (HBITMAP)pBitmapCacheEntry->m_hBitmap;
2206 }
2207 else
2208 #endif
2209 {
2210 hDCMask = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDOP, NULLHANDLE);
2211 hDCBuffer = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDOP, NULLHANDLE);
2212 hPSMask = ::GpiCreatePS(vHabmain, hDCMask, &vSize, PU_PELS | GPIT_MICRO | GPIA_ASSOC);
2213 hPSBuffer = ::GpiCreatePS(vHabmain, hDCBuffer, &vSize, PU_PELS | GPIT_MICRO | GPIA_ASSOC);
2214 hBufBitmap = ::GpiCreateBitmap(GetHPS(), &vBmpHdr, 0L, NULL, NULL);
2215 }
2216
2217 POINTL aPoint1[4] = { 0, 0
2218 ,vWidth, vHeight
2219 ,vXdest, vYdest
2220 ,vXdest + vWidth, vYdest + vHeight
2221 };
2222 POINTL aPoint2[4] = { 0, 0
2223 ,vWidth, vHeight
2224 ,vXsrc, vYsrc
2225 ,vXsrc + vWidth, vYsrc + vHeight
2226 };
2227 POINTL aPoint3[4] = { vXdest, vYdest
2228 ,vXdest + vWidth, vYdest + vHeight
2229 ,vXsrc, vYsrc
2230 ,vXsrc + vWidth, vYsrc + vHeight
2231 };
2232 POINTL aPoint4[4] = { vXdest, vYdest
2233 ,vXdest + vWidth, vYdest + vHeight
2234 ,0, 0
2235 ,vWidth, vHeight
2236 };
2237 ::GpiSetBitmap(hPSMask, (HBITMAP) pMask->GetMaskBitmap());
2238 ::GpiSetBitmap(hPSBuffer, (HBITMAP) hBufBitmap);
2239
2240 //
2241 // Copy dest to buffer
2242 //
2243 rc = ::GpiBitBlt( hPSBuffer
2244 ,GetHPS()
2245 ,4L
2246 ,aPoint1
2247 ,ROP_SRCCOPY
2248 ,BBO_IGNORE
2249 );
2250 if (rc == GPI_ERROR)
2251 {
2252 wxLogLastError(wxT("BitBlt"));
2253 }
2254
2255 //
2256 // Copy src to buffer using selected raster op
2257 //
2258 rc = ::GpiBitBlt( hPSBuffer
2259 ,GetHPS()
2260 ,4L
2261 ,aPoint2
2262 ,lRop
2263 ,BBO_IGNORE
2264 );
2265 if (rc == GPI_ERROR)
2266 {
2267 wxLogLastError(wxT("BitBlt"));
2268 }
2269
2270 //
2271 // Set masked area in buffer to BLACK (pixel value 0)
2272 //
2273 COLORREF vPrevBkCol = ::GpiQueryBackColor(GetHPS());
2274 COLORREF vPrevCol = ::GpiQueryColor(GetHPS());
2275
2276 ::GpiSetBackColor(GetHPS(), OS2RGB(255, 255, 255));
2277 ::GpiSetColor(GetHPS(), OS2RGB(0, 0, 0));
2278
2279 rc = ::GpiBitBlt( hPSBuffer
2280 ,hPSMask
2281 ,4L
2282 ,aPoint2
2283 ,ROP_SRCAND
2284 ,BBO_IGNORE
2285 );
2286 if (rc == GPI_ERROR)
2287 {
2288 wxLogLastError(wxT("BitBlt"));
2289 }
2290
2291 //
2292 // Set unmasked area in dest to BLACK
2293 //
2294 ::GpiSetBackColor(GetHPS(), OS2RGB(0, 0, 0));
2295 ::GpiSetColor(GetHPS(), OS2RGB(255, 255, 255));
2296 rc = ::GpiBitBlt( GetHPS()
2297 ,hPSMask
2298 ,4L
2299 ,aPoint3
2300 ,ROP_SRCAND
2301 ,BBO_IGNORE
2302 );
2303 if (rc == GPI_ERROR)
2304 {
2305 wxLogLastError(wxT("BitBlt"));
2306 }
2307
2308 //
2309 // Restore colours to original values
2310 //
2311 ::GpiSetBackColor(GetHPS(), vPrevBkCol);
2312 ::GpiSetColor(GetHPS(), vPrevCol);
2313
2314 //
2315 // OR buffer to dest
2316 //
2317 rc = ::GpiBitBlt( GetHPS()
2318 ,hPSMask
2319 ,4L
2320 ,aPoint4
2321 ,ROP_SRCPAINT
2322 ,BBO_IGNORE
2323 );
2324 if (rc == GPI_ERROR)
2325 {
2326 bSuccess = FALSE;
2327 wxLogLastError(wxT("BitBlt"));
2328 }
2329
2330 //
2331 // Tidy up temporary DCs and bitmap
2332 //
2333 ::GpiSetBitmap(hPSMask, NULLHANDLE);
2334 ::GpiSetBitmap(hPSBuffer, NULLHANDLE);
2335 #if !wxUSE_DC_CACHEING
2336 ::GpiDestroyPS(hPSMask);
2337 ::GpiDestroyPS(hPSBuffer);
2338 ::DevCloseDC(hDCMask);
2339 ::DevCloseDC(hDCBuffer);
2340 ::GpiDeleteBitmap(hBufBitmap);
2341 #endif
2342 bSuccess = TRUE;
2343 }
2344 else // no mask, just BitBlt() it
2345 {
2346 POINTL aPoint[4] = { vXdest, vYdest
2347 ,vXdest + vWidth, vYdest + vHeight
2348 ,vXsrc, vYsrc
2349 ,vXsrc + vWidth, vYsrc + vHeight
2350 };
2351
2352 bSuccess = (::GpiBitBlt( m_hPS
2353 ,pSource->GetHPS()
2354 ,4L
2355 ,aPoint
2356 ,lRop
2357 ,BBO_IGNORE
2358 ) != GPI_ERROR);
2359 if (!bSuccess )
2360 {
2361 wxLogLastError(wxT("BitBlt"));
2362 }
2363 }
2364 vCbnd.lColor = (LONG)vOldTextColor;
2365 ::GpiSetAttrs( m_hPS // presentation-space handle
2366 ,PRIM_CHAR // Char primitive.
2367 ,CBB_COLOR // sets color.
2368 ,0
2369 ,&vCbnd // buffer for attributes.
2370 );
2371 ::GpiSetBackColor(m_hPS, (LONG)vOldBackground);
2372 return bSuccess;
2373 }
2374
2375 void wxDC::DoGetSize(
2376 int* pnWidth
2377 , int* pnHeight
2378 ) const
2379 {
2380 LONG lArray[CAPS_HEIGHT];
2381
2382 if(::DevQueryCaps( m_hDC
2383 ,CAPS_FAMILY
2384 ,CAPS_HEIGHT
2385 ,lArray
2386 ))
2387 {
2388 *pnWidth = lArray[CAPS_WIDTH];
2389 *pnHeight = lArray[CAPS_HEIGHT];
2390 }
2391 }; // end of wxDC::DoGetSize(
2392
2393 void wxDC::DoGetSizeMM(
2394 int* pnWidth
2395 , int* pnHeight
2396 ) const
2397 {
2398 LONG lArray[CAPS_VERTICAL_RESOLUTION];
2399
2400 if(::DevQueryCaps( m_hDC
2401 ,CAPS_FAMILY
2402 ,CAPS_VERTICAL_RESOLUTION
2403 ,lArray
2404 ))
2405 {
2406 int nWidth;
2407 int nHeight;
2408 int nHorzRes;
2409 int nVertRes;
2410
2411 nWidth = lArray[CAPS_WIDTH];
2412 nHeight = lArray[CAPS_HEIGHT];
2413 nHorzRes = lArray[CAPS_HORIZONTAL_RESOLUTION]; // returns pel/meter
2414 nVertRes = lArray[CAPS_VERTICAL_RESOLUTION]; // returns pel/meter
2415 nWidth = (nHorzRes/1000) * nWidth;
2416 nHeight = (nVertRes/1000) * nHeight;
2417 }
2418 }; // end of wxDC::DoGetSizeMM
2419
2420 wxSize wxDC::GetPPI() const
2421 {
2422 LONG lArray[CAPS_VERTICAL_RESOLUTION];
2423 int nWidth;
2424 int nHeight;
2425
2426 if(::DevQueryCaps( m_hDC
2427 ,CAPS_FAMILY
2428 ,CAPS_VERTICAL_RESOLUTION
2429 ,lArray
2430 ))
2431 {
2432 int nPelWidth;
2433 int nPelHeight;
2434 int nHorzRes;
2435 int nVertRes;
2436
2437 nPelWidth = lArray[CAPS_WIDTH];
2438 nPelHeight = lArray[CAPS_HEIGHT];
2439 nHorzRes = lArray[CAPS_HORIZONTAL_RESOLUTION]; // returns pel/meter
2440 nVertRes = lArray[CAPS_VERTICAL_RESOLUTION]; // returns pel/meter
2441 nWidth = (nHorzRes/39.3) * nPelWidth;
2442 nHeight = (nVertRes/39.3) * nPelHeight;
2443 }
2444 return (wxSize(nWidth,nHeight));
2445 } // end of wxDC::GetPPI
2446
2447 void wxDC::SetLogicalScale(
2448 double dX
2449 , double dY
2450 )
2451 {
2452 m_logicalScaleX = dX;
2453 m_logicalScaleY = dY;
2454 }; // end of wxDC::SetLogicalScale
2455
2456 #if WXWIN_COMPATIBILITY
2457 void wxDC::DoGetTextExtent(const wxString& string, float *x, float *y,
2458 float *descent, float *externalLeading,
2459 wxFont *theFont, bool use16bit) const
2460 {
2461 wxCoord x1, y1, descent1, externalLeading1;
2462 GetTextExtent(string, & x1, & y1, & descent1, & externalLeading1, theFont, use16bit);
2463 *x = x1; *y = y1;
2464 if (descent)
2465 *descent = descent1;
2466 if (externalLeading)
2467 *externalLeading = externalLeading1;
2468 }
2469 #endif
2470
wxWidgets (Impactor)