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[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 void 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
571 vPtlPos.x = vX; // Loads x-coordinate
572 vPtlPos.y = OS2Y(vY,0); // Loads y-coordinate
573 ::GpiMove(m_hPS, &vPtlPos); // Sets current position
574 lColor = rCol.GetPixel();
575 lOptions = FF_BOUNDARY;
576 if(wxFLOOD_SURFACE == nStyle)
577 lOptions = FF_SURFACE;
578
579 ::GpiFloodFill(m_hPS, lOptions, lColor);
580 } // end of wxDC::DoFloodFill
581
582 bool wxDC::DoGetPixel(
583 wxCoord vX
584 , wxCoord vY
585 , wxColour* pCol
586 ) const
587 {
588 POINTL vPoint;
589 LONG lColor;
590
591 vPoint.x = vX;
592 vPoint.y = OS2Y(vY,0);
593 lColor = ::GpiSetPel(m_hPS, &vPoint);
594
595 //
596 // Get the color of the pen
597 //
598 LONG lPencolor = 0x00ffffff;
599
600 if (m_pen.Ok())
601 {
602 lPencolor = m_pen.GetColour().GetPixel();
603 }
604
605 //
606 // return the color of the pixel
607 //
608 if(pCol)
609 pCol->Set( GetRValue(lColor)
610 ,GetGValue(lColor)
611 ,GetBValue(lColor)
612 );
613 return(lColor == lPencolor);
614 } // end of wxDC::DoGetPixel
615
616 void wxDC::DoCrossHair(
617 wxCoord vX
618 , wxCoord vY
619 )
620 {
621 vY = OS2Y(vY,0);
622
623 wxCoord vX1 = vX - VIEWPORT_EXTENT;
624 wxCoord vY1 = vY - VIEWPORT_EXTENT;
625 wxCoord vX2 = vX + VIEWPORT_EXTENT;
626 wxCoord vY2 = vY + VIEWPORT_EXTENT;
627 POINTL vPoint[4];
628
629 vPoint[0].x = vX1;
630 vPoint[0].y = vY;
631
632 vPoint[1].x = vX2;
633 vPoint[1].y = vY;
634
635 ::GpiMove(m_hPS, &vPoint[0]);
636 ::GpiLine(m_hPS, &vPoint[1]);
637
638 vPoint[2].x = vX;
639 vPoint[2].y = vY1;
640
641 vPoint[3].x = vX;
642 vPoint[3].y = vY2;
643
644 ::GpiMove(m_hPS, &vPoint[2]);
645 ::GpiLine(m_hPS, &vPoint[3]);
646 CalcBoundingBox(vX1, vY1);
647 CalcBoundingBox(vX2, vY2);
648 } // end of wxDC::DoCrossHair
649
650 void wxDC::DoDrawLine(
651 wxCoord vX1
652 , wxCoord vY1
653 , wxCoord vX2
654 , wxCoord vY2
655 )
656 {
657 POINTL vPoint[2];
658
659 vY1 = OS2Y(vY1,0);
660 vY2 = OS2Y(vY2,0);
661
662 vPoint[0].x = vX1;
663 vPoint[0].y = vY1;
664 vPoint[1].x = vX2;
665 vPoint[1].y = vY2;
666 ::GpiMove(m_hPS, &vPoint[0]);
667 ::GpiLine(m_hPS, &vPoint[1]);
668 CalcBoundingBox(vX1, vY1);
669 CalcBoundingBox(vX2, vY2);
670 } // end of wxDC::DoDrawLine
671
672 //////////////////////////////////////////////////////////////////////////////
673 // Draws an arc of a circle, centred on (xc, yc), with starting point (x1, y1)
674 // and ending at (x2, y2). The current pen is used for the outline and the
675 // current brush for filling the shape. The arc is drawn in an anticlockwise
676 // direction from the start point to the end point.
677 //////////////////////////////////////////////////////////////////////////////
678 void wxDC::DoDrawArc(
679 wxCoord vX1
680 , wxCoord vY1
681 , wxCoord vX2
682 , wxCoord vY2
683 , wxCoord vXc
684 , wxCoord vYc
685 )
686 {
687 POINTL vPtlPos;
688 POINTL vPtlArc[2]; // Structure for current position
689 int nDx;
690 int nDy;
691 double dRadius;
692 double dAngl1;
693 double dAngl2;
694 double dAnglmid;
695 wxCoord vXm;
696 wxCoord vYm;
697 ARCPARAMS vArcp; // Structure for arc parameters
698
699 if((vX1 == vXc && vY1 == vXc) || (vX2 == vXc && vY2 == vXc))
700 return; // Draw point ??
701 dRadius = 0.5 * ( hypot( (double)(vY1 - vYc)
702 ,(double)(vX1 - vXc)
703 ) +
704 hypot( (double)(vY2 - vYc)
705 ,(double)(vX2 - vXc)
706 )
707 );
708
709 dAngl1 = atan2( (double)(vY1 - vYc)
710 ,(double)(vX1 - vXc)
711 );
712 dAngl2 = atan2( (double)(vY2 - vYc)
713 ,(double)(vX2 - vXc)
714 );
715 if(dAngl2 < dAngl1)
716 dAngl2 += M_PI * 2;
717
718 //
719 // GpiPointArc can't draw full arc
720 //
721 if(dAngl2 == dAngl1 || (vX1 == vX2 && vY1 == vY2) )
722 {
723 //
724 // Medium point
725 //
726 dAnglmid = (dAngl1 + dAngl2)/2. + M_PI;
727 vXm = vXc + dRadius * cos(dAnglmid);
728 vYm = vYc + dRadius * sin(dAnglmid);
729 DoDrawArc( vX1, vY1
730 ,vXm, vYm
731 ,vXc, vYc
732 );
733 DoDrawArc( vXm, vYm
734 ,vX2, vY2
735 ,vXc, vYc
736 );
737 return;
738 }
739
740 //
741 // Medium point
742 //
743 dAnglmid = (dAngl1 + dAngl2)/2.;
744 vXm = vXc + dRadius * cos(dAnglmid);
745 vYm = vYc + dRadius * sin(dAnglmid);
746
747 //
748 // Ellipse main axis (r,q), (p,s) with center at (0,0) */
749 //
750 vArcp.lR = 0;
751 vArcp.lQ = 1;
752 vArcp.lP = 1;
753 vArcp.lS = 0;
754 ::GpiSetArcParams(m_hPS, &vArcp); // Sets parameters to default
755
756 vPtlPos.x = vX1; // Loads x-coordinate
757 vPtlPos.y = vY1; // Loads y-coordinate
758 ::GpiMove(m_hPS, &vPtlPos); // Sets current position
759 vPtlArc[0].x = vXm;
760 vPtlArc[0].y = vYm;
761 vPtlArc[1].x = vX2;
762 vPtlArc[1].y = vY2;
763 ::GpiPointArc(m_hPS, vPtlArc); // Draws the arc
764 CalcBoundingBox( (vXc - dRadius)
765 ,(vYc - dRadius)
766 );
767 CalcBoundingBox( (vXc + dRadius)
768 ,(vYc + dRadius)
769 );
770 } // end of wxDC::DoDrawArc
771
772 void wxDC::DoDrawCheckMark(
773 wxCoord vX1
774 , wxCoord vY1
775 , wxCoord vWidth
776 , wxCoord vHeight
777 )
778 {
779 POINTL vPoint[2];
780
781 vY1 = OS2Y(vY1,vHeight);
782
783 vPoint[0].x = vX1;
784 vPoint[0].y = vY1;
785 vPoint[1].x = vX1 + vWidth;
786 vPoint[1].y = vY1 + vHeight;
787
788 ::GpiMove(m_hPS, &vPoint[0]);
789 ::GpiBox( m_hPS // handle to a presentation space
790 ,DRO_OUTLINE // draw the box outline ? or ?
791 ,&vPoint[1] // address of the corner
792 ,0L // horizontal corner radius
793 ,0L // vertical corner radius
794 );
795 if(vWidth > 4 && vHeight > 4)
796 {
797 int nTmp;
798
799 vPoint[0].x += 2; vPoint[0].y += 2;
800 vPoint[1].x -= 2; vPoint[1].y -= 2;
801 ::GpiMove(m_hPS, &vPoint[0]);
802 ::GpiLine(m_hPS, &vPoint[1]);
803 nTmp = vPoint[0].x;
804 vPoint[0].x = vPoint[1].x;
805 vPoint[1].x = nTmp;
806 ::GpiMove(m_hPS, &vPoint[0]);
807 ::GpiLine(m_hPS, &vPoint[1]);
808 }
809 CalcBoundingBox( vX1
810 ,vY1
811 );
812
813 wxCoord vX2 = vX1 + vWidth;
814 wxCoord vY2 = vY1 + vHeight;
815
816 CalcBoundingBox( vX2
817 ,vY2
818 );
819 } // end of wxDC::DoDrawCheckMark
820
821 void wxDC::DoDrawPoint(
822 wxCoord vX
823 , wxCoord vY
824 )
825 {
826 POINTL vPoint;
827 COLORREF vColor = 0x00ffffff;
828
829 if (m_pen.Ok())
830 {
831 vColor = m_pen.GetColour().GetPixel();
832 }
833 ::GpiSetColor(m_hPS, vColor);
834 vPoint.x = vX;
835 vPoint.y = OS2Y(vY,0);
836 ::GpiSetPel(m_hPS, &vPoint);
837 CalcBoundingBox( vX
838 ,vY
839 );
840 } // end of wxDC::DoDrawPoint
841
842 void wxDC::DoDrawPolygon(
843 int n
844 , wxPoint vPoints[]
845 , wxCoord vXoffset
846 , wxCoord vYoffset
847 , int nFillStyle
848 )
849 {
850 ULONG ulCount = 1; // Number of polygons.
851 POLYGON vPlgn; // polygon.
852 ULONG flOptions = 0L; // Drawing options.
853
854 //////////////////////////////////////////////////////////////////////////////
855 // This contains fields of option bits... to draw boundary lines as well as
856 // the area interior.
857 //
858 // Drawing boundary lines:
859 // POLYGON_NOBOUNDARY Does not draw boundary lines.
860 // POLYGON_BOUNDARY Draws boundary lines (the default).
861 //
862 // Construction of the area interior:
863 // POLYGON_ALTERNATE Constructs interior in alternate mode
864 // (the default).
865 // POLYGON_WINDING Constructs interior in winding mode.
866 //////////////////////////////////////////////////////////////////////////////
867
868 ULONG flModel = 0L; // Drawing model.
869
870 //////////////////////////////////////////////////////////////////////////////
871 // Drawing model.
872 // POLYGON_INCL Fill is inclusive of bottom right (the default).
873 // POLYGON_EXCL Fill is exclusive of bottom right.
874 // This is provided to aid migration from other graphics models.
875 //////////////////////////////////////////////////////////////////////////////
876
877 LONG lHits = 0L; // Correlation/error indicator.
878 POINTL vPoint;
879 int i;
880 int nIsTRANSPARENT = 0;
881 LONG lBorderColor = 0L;
882 LONG lColor = 0L;
883
884 lBorderColor = m_pen.GetColour().GetPixel();
885 lColor = m_brush.GetColour().GetPixel();
886 if(m_brush.GetStyle() == wxTRANSPARENT)
887 nIsTRANSPARENT = 1;
888
889 vPlgn.ulPoints = n;
890 vPlgn.aPointl = (POINTL*) calloc( n + 1
891 ,sizeof(POINTL)
892 ); // well, new will call malloc
893
894 for(i = 0; i < n; i++)
895 {
896 vPlgn.aPointl[i].x = vPoints[i].x; // +xoffset;
897 vPlgn.aPointl[i].y = OS2Y(vPoints[i].y,0); // +yoffset;
898 }
899 flModel = POLYGON_BOUNDARY;
900 if(nFillStyle == wxWINDING_RULE)
901 flModel |= POLYGON_WINDING;
902 else
903 flModel |= POLYGON_ALTERNATE;
904
905 vPoint.x = vXoffset;
906 vPoint.y = OS2Y(vYoffset,0);
907
908 ::GpiSetColor(m_hPS, lBorderColor);
909 ::GpiMove(m_hPS, &vPoint);
910 lHits = ::GpiPolygons(m_hPS, ulCount, &vPlgn, flOptions, flModel);
911 free(vPlgn.aPointl);
912 } // end of wxDC::DoDrawPolygon
913
914 void wxDC::DoDrawLines(
915 int n
916 , wxPoint vPoints[]
917 , wxCoord vXoffset
918 , wxCoord vYoffset
919 )
920 {
921 POINTL vPoint;
922
923 if (vXoffset != 0L || vXoffset != 0L)
924 {
925 int i;
926
927 vPoint.x = vPoints[0].x + vXoffset;
928 vPoint.y = OS2Y(vPoints[0].y + vYoffset,0);
929 ::GpiMove(m_hPS, &vPoint);
930
931 LONG lBorderColor = m_pen.GetColour().GetPixel();
932
933 ::GpiSetColor(m_hPS, lBorderColor);
934 for(i = 1; i < n; i++)
935 {
936 vPoint.x = vPoints[i].x + vXoffset;
937 vPoint.y = OS2Y(vPoints[i].y + vYoffset,0);
938 ::GpiLine(m_hPS, &vPoint);
939 }
940 }
941 else
942 {
943 int i;
944
945 CalcBoundingBox( vPoints[i].x
946 ,vPoints[i].y
947 );
948 vPoint.x = vPoints[0].x;
949 vPoint.y = OS2Y(vPoints[0].y,0);
950 ::GpiMove(m_hPS, &vPoint);
951
952 for (i = 0; i < n; i++)
953 {
954 CalcBoundingBox( vPoints[i].x
955 ,vPoints[i].y
956 );
957 vPoint.x = vPoints[i].x;
958 vPoint.y = OS2Y(vPoints[i].y,0);
959 ::GpiLine(m_hPS, &vPoint);
960 }
961 }
962 } // end of wxDC::DoDrawLines
963
964 void wxDC::DoDrawRectangle(
965 wxCoord vX
966 , wxCoord vY
967 , wxCoord vWidth
968 , wxCoord vHeight
969 )
970 {
971 POINTL vPoint[2];
972 LONG lControl;
973 LONG lColor;
974 LONG lBorderColor;
975 int nIsTRANSPARENT = 0;
976
977 vY = OS2Y(vY,vHeight);
978
979 wxCoord vX2 = vX + vWidth;
980 wxCoord vY2 = vY + vHeight;
981
982 vPoint[0].x = vX;
983 vPoint[0].y = vY;
984 vPoint[1].x = vX + vWidth;
985 vPoint[1].y = vY + vHeight;
986 ::GpiMove(m_hPS, &vPoint[0]);
987 lColor = m_brush.GetColour().GetPixel();
988 lBorderColor = m_pen.GetColour().GetPixel();
989 if (m_brush.GetStyle() == wxTRANSPARENT)
990 nIsTRANSPARENT = 1;
991 if(lColor == lBorderColor || nIsTRANSPARENT)
992 {
993 lControl = DRO_OUTLINEFILL; //DRO_FILL;
994 if(m_brush.GetStyle() == wxTRANSPARENT)
995 lControl = DRO_OUTLINE;
996
997 ::GpiSetColor(m_hPS, lColor);
998 ::GpiBox( m_hPS // handle to a presentation space
999 ,lControl // draw the box outline ? or ?
1000 ,&vPoint[1] // address of the corner
1001 ,0L // horizontal corner radius
1002 ,0L // vertical corner radius
1003 );
1004 }
1005 else
1006 {
1007 lControl = DRO_OUTLINE;
1008 ::GpiSetColor( m_hPS
1009 ,lBorderColor
1010 );
1011 ::GpiBox( m_hPS
1012 ,lControl
1013 ,&vPoint[1]
1014 ,0L
1015 ,0L
1016 );
1017 lControl = DRO_FILL;
1018 ::GpiSetColor( m_hPS
1019 ,lColor
1020 );
1021 vPoint[0].x = vX + 1;
1022 vPoint[0].y = vY + 1;
1023 vPoint[1].x = vX + vWidth - 1;
1024 vPoint[1].y = vY + vHeight - 1;
1025 ::GpiMove(m_hPS, &vPoint[0]);
1026 ::GpiBox( m_hPS
1027 ,lControl
1028 ,&vPoint[1]
1029 ,0L
1030 ,0L
1031 );
1032 }
1033 CalcBoundingBox(vX, vY);
1034 CalcBoundingBox(vX2, vY2);
1035 } // end of wxDC::DoDrawRectangle
1036
1037 void wxDC::DoDrawRoundedRectangle(
1038 wxCoord vX
1039 , wxCoord vY
1040 , wxCoord vWidth
1041 , wxCoord vHeight
1042 , double dRadius
1043 )
1044 {
1045 POINTL vPoint[2];
1046 LONG lControl;
1047
1048 vY = OS2Y(vY,vHeight);
1049
1050 wxCoord vX2 = (vX + vWidth);
1051 wxCoord vY2 = (vY + vHeight);
1052
1053 vPoint[0].x = vX;
1054 vPoint[0].y = YLOG2DEV(vY) - vHeight;
1055 vPoint[1].x = vX + vWidth;
1056 vPoint[1].y = vY;
1057 ::GpiMove(m_hPS, &vPoint[0]);
1058
1059 lControl = DRO_OUTLINEFILL; //DRO_FILL;
1060 if (m_brush.GetStyle() == wxTRANSPARENT)
1061 lControl = DRO_OUTLINE;
1062 ::GpiBox( m_hPS // handle to a presentation space
1063 ,DRO_OUTLINE // draw the box outline ? or ?
1064 ,&vPoint[1] // address of the corner
1065 ,(LONG)dRadius // horizontal corner radius
1066 ,(LONG)dRadius // vertical corner radius
1067 );
1068 CalcBoundingBox(vX, vY);
1069 CalcBoundingBox(vX2, vY2);
1070 } // end of wxDC::DoDrawRoundedRectangle
1071
1072 // Draw Ellipse within box (x,y) - (x+width, y+height)
1073 void wxDC::DoDrawEllipse(
1074 wxCoord vX
1075 , wxCoord vY
1076 , wxCoord vWidth
1077 , wxCoord vHeight
1078 )
1079 {
1080 POINTL vPtlPos; // Structure for current position
1081 FIXED vFxMult; // Multiplier for ellipse
1082 ARCPARAMS vArcp; // Structure for arc parameters
1083
1084 vY = OS2Y(vY,vHeight);
1085
1086 vArcp.lR = 0;
1087 vArcp.lQ = vHeight/2;
1088 vArcp.lP = vWidth/2;
1089 vArcp.lS = 0;
1090 ::GpiSetArcParams( m_hPS
1091 ,&vArcp
1092 ); // Sets parameters to default
1093 vPtlPos.x = vX + vWidth/2; // Loads x-coordinate
1094 vPtlPos.y = vY + vHeight/2; // Loads y-coordinate
1095 ::GpiMove( m_hPS
1096 ,&vPtlPos
1097 ); // Sets current position
1098 vFxMult = MAKEFIXED(1, 0); /* Sets multiplier */
1099
1100 //
1101 // DRO_FILL, DRO_OTLINEFILL - where to get
1102 //
1103 ::GpiFullArc( m_hPS
1104 ,DRO_OUTLINE
1105 ,vFxMult
1106 ); // Draws full arc with center at current position
1107
1108 wxCoord vX2 = (vX + vWidth);
1109 wxCoord vY2 = (vY + vHeight);
1110
1111 CalcBoundingBox(vX, vY);
1112 CalcBoundingBox(vX2, vY2);
1113 } // end of wxDC::DoDrawEllipse
1114
1115 void wxDC::DoDrawEllipticArc(
1116 wxCoord vX
1117 , wxCoord vY
1118 , wxCoord vWidth
1119 , wxCoord vHeight
1120 , double dSa
1121 , double dEa
1122 )
1123 {
1124 POINTL vPtlPos; // Structure for current position
1125 FIXED vFxMult; // Multiplier for ellipse
1126 ARCPARAMS vArcp; // Structure for arc parameters
1127 FIXED vFSa;
1128 FIXED vFSweepa; // Start angle, sweep angle
1129 double dIntPart;
1130 double dFractPart;
1131 double dRadius;
1132
1133 vY = OS2Y(vY,vHeight);
1134
1135 dFractPart = modf(dSa,&dIntPart);
1136 vFSa = MAKEFIXED((int)dIntPart, (int)(dFractPart * 0xffff) );
1137 dFractPart = modf(dEa - dSa, &dIntPart);
1138 vFSweepa = MAKEFIXED((int)dIntPart, (int)(dFractPart * 0xffff) );
1139
1140 //
1141 // Ellipse main axis (r,q), (p,s) with center at (0,0)
1142 //
1143 vArcp.lR = 0;
1144 vArcp.lQ = vHeight/2;
1145 vArcp.lP = vWidth/2;
1146 vArcp.lS = 0;
1147 ::GpiSetArcParams(m_hPS, &vArcp); // Sets parameters to default
1148 vPtlPos.x = vX + vWidth/2 * (1. + cos(DegToRad(dSa))); // Loads x-coordinate
1149 vPtlPos.y = vY + vHeight/2 * (1. + sin(DegToRad(dSa))); // Loads y-coordinate
1150 ::GpiMove(m_hPS, &vPtlPos); // Sets current position
1151
1152 //
1153 // May be not to the center ?
1154 //
1155 vPtlPos.x = vX + vWidth/2 ; // Loads x-coordinate
1156 vPtlPos.y = vY + vHeight/2; // Loads y-coordinate
1157 vFxMult = MAKEFIXED(1, 0); // Sets multiplier
1158
1159 //
1160 // DRO_FILL, DRO_OTLINEFILL - where to get
1161 //
1162 ::GpiPartialArc( m_hPS
1163 ,&vPtlPos
1164 ,vFxMult
1165 ,vFSa
1166 ,vFSweepa
1167 );
1168 wxCoord vX2 = (vX + vWidth);
1169 wxCoord vY2 = (vY + vHeight);
1170
1171 CalcBoundingBox(vX, vY);
1172 CalcBoundingBox(vX2, vY2);
1173 } // end of wxDC::DoDrawEllipticArc
1174
1175 void wxDC::DoDrawIcon(
1176 const wxIcon& rIcon
1177 , wxCoord vX
1178 , wxCoord vY
1179 )
1180 {
1181 vY = OS2Y(vY,rIcon.GetHeight());
1182 wxCHECK_RET( rIcon.Ok(), wxT("invalid icon in DrawIcon") );
1183
1184 ::WinDrawPointer( GetHPS()
1185 ,vX
1186 ,vY
1187 ,(HPOINTER)GetHiconOf(rIcon)
1188 ,DP_NORMAL
1189 );
1190 CalcBoundingBox(vX, vY);
1191 CalcBoundingBox(vX + rIcon.GetWidth(), vY + rIcon.GetHeight());
1192 } // end of wxDC::DoDrawIcon
1193
1194 void wxDC::DoDrawBitmap(
1195 const wxBitmap& rBmp
1196 , wxCoord vX
1197 , wxCoord vY
1198 , bool bUseMask
1199 )
1200 {
1201 POINTL vPoint = {vX, vY};
1202
1203 ::WinDrawBitmap( GetHPS()
1204 ,(HBITMAP)GetHbitmapOf(rBmp)
1205 ,NULL
1206 ,&vPoint
1207 ,0L
1208 ,0L
1209 ,DBM_NORMAL
1210 );
1211 } // end of wxDC::DoDrawBitmap
1212
1213 void wxDC::DoDrawText(
1214 const wxString& rsText
1215 , wxCoord vX
1216 , wxCoord vY
1217 )
1218 {
1219 wxCoord vWidth;
1220 wxCoord vHeight;
1221
1222 DrawAnyText( rsText
1223 ,vX
1224 ,vY
1225 );
1226
1227 CalcBoundingBox(vX, vY);
1228 GetTextExtent(rsText, &vWidth, &vHeight);
1229 CalcBoundingBox((vX + vWidth), (vY + vHeight));
1230 } // end of wxDC::DoDrawText
1231
1232 void wxDC::DrawAnyText(
1233 const wxString& rsText
1234 , wxCoord vX
1235 , wxCoord vY
1236 )
1237 {
1238 int nOldBackground = 0;
1239 POINTL vPtlStart;
1240 LONG lHits;
1241 wxCoord vTextX = 0;
1242 wxCoord vTextY = 0;
1243
1244 //
1245 // prepare for drawing the text
1246 //
1247
1248 //
1249 // Set text color attributes
1250 //
1251 if (m_textForegroundColour.Ok())
1252 {
1253 SetTextColor( m_hPS
1254 ,(int)m_textForegroundColour.GetPixel()
1255 );
1256 }
1257
1258 if (m_textBackgroundColour.Ok())
1259 {
1260 nOldBackground = SetTextBkColor( m_hPS
1261 ,(int)m_textBackgroundColour.GetPixel()
1262 );
1263 }
1264 SetBkMode( m_hPS
1265 ,m_backgroundMode
1266 );
1267 GetTextExtent( rsText
1268 ,&vTextX
1269 ,&vTextY
1270 );
1271 vPtlStart.x = vX;
1272 vPtlStart.y = OS2Y(vY,vTextY);
1273
1274 lHits = ::GpiCharStringAt( m_hPS
1275 ,&vPtlStart
1276 ,rsText.length()
1277 ,(PCH)rsText.c_str()
1278 );
1279 if (lHits != GPI_OK)
1280 {
1281 wxLogLastError(wxT("TextOut"));
1282 }
1283
1284 //
1285 // Restore the old parameters (text foreground colour may be left because
1286 // it never is set to anything else, but background should remain
1287 // transparent even if we just drew an opaque string)
1288 //
1289 if (m_textBackgroundColour.Ok())
1290 SetTextBkColor( m_hPS
1291 ,nOldBackground
1292 );
1293 SetBkMode( m_hPS
1294 ,wxTRANSPARENT
1295 );
1296 }
1297
1298 void wxDC::DoDrawRotatedText(
1299 const wxString& rsText
1300 , wxCoord vX
1301 , wxCoord vY
1302 , double dAngle
1303 )
1304 {
1305 if (dAngle == 0.0)
1306 {
1307 DoDrawText( rsText
1308 ,vX
1309 ,vY
1310 );
1311 }
1312
1313 // TODO:
1314 /*
1315 if ( angle == 0.0 )
1316 {
1317 DoDrawText(text, x, y);
1318 }
1319 else
1320 {
1321 LOGFONT lf;
1322 wxFillLogFont(&lf, &m_font);
1323
1324 // GDI wants the angle in tenth of degree
1325 long angle10 = (long)(angle * 10);
1326 lf.lfEscapement = angle10;
1327 lf. lfOrientation = angle10;
1328
1329 HFONT hfont = ::CreateFontIndirect(&lf);
1330 if ( !hfont )
1331 {
1332 wxLogLastError("CreateFont");
1333 }
1334 else
1335 {
1336 HFONT hfontOld = ::SelectObject(GetHdc(), hfont);
1337
1338 DrawAnyText(text, x, y);
1339
1340 (void)::SelectObject(GetHdc(), hfontOld);
1341 }
1342
1343 // call the bounding box by adding all four vertices of the rectangle
1344 // containing the text to it (simpler and probably not slower than
1345 // determining which of them is really topmost/leftmost/...)
1346 wxCoord w, h;
1347 GetTextExtent(text, &w, &h);
1348
1349 double rad = DegToRad(angle);
1350
1351 // "upper left" and "upper right"
1352 CalcBoundingBox(x, y);
1353 CalcBoundingBox(x + w*cos(rad), y - h*sin(rad));
1354 CalcBoundingBox(x + h*sin(rad), y + h*cos(rad));
1355
1356 // "bottom left" and "bottom right"
1357 x += (wxCoord)(h*sin(rad));
1358 y += (wxCoord)(h*cos(rad));
1359 CalcBoundingBox(x, y);
1360 CalcBoundingBox(x + h*sin(rad), y + h*cos(rad));
1361 }
1362 */
1363 }
1364
1365 // ---------------------------------------------------------------------------
1366 // set GDI objects
1367 // ---------------------------------------------------------------------------
1368
1369 void wxDC::SetPalette(
1370 const wxPalette& rPalette
1371 )
1372 {
1373 if (m_hOldFont)
1374 {
1375 m_hOldFont = 0;
1376 }
1377 m_palette = rPalette;
1378 if (!rPalette.Ok())
1379 {
1380 if (m_hOldFont)
1381 {
1382 m_hOldFont = 0;
1383 }
1384 }
1385 HPALETTE hOldPal = ::GpiSelectPalette((HDC) m_hPS, (HPALETTE) m_palette.GetHPALETTE());
1386 if (!m_hOldPalette)
1387 m_hOldPalette = (WXHPALETTE)hOldPal;
1388 } // end of wxDC::SetPalette
1389
1390 void wxDC::SetFont(
1391 const wxFont& rFont
1392 )
1393 {
1394 //
1395 // Set the old object temporarily, in case the assignment deletes an object
1396 // that's not yet selected out.
1397 //
1398 if (m_hOldFont)
1399 {
1400 m_hOldFont = 0;
1401 }
1402 m_font = rFont;
1403 if (!rFont.Ok())
1404 {
1405 m_hOldFont = 0;
1406 }
1407
1408 m_font.SetPS(m_hPS); // this will realize the font
1409
1410 if (m_font.Ok())
1411 {
1412 HFONT hFont = m_font.GetResourceHandle();
1413 if (hFont == (HFONT) NULL)
1414 {
1415 wxLogDebug(wxT("::SelectObject failed in wxDC::SetFont."));
1416 }
1417 if (!m_hOldFont)
1418 m_hOldFont = (WXHFONT) hFont;
1419 }
1420 } // end of wxDC::SetFont
1421
1422 void wxDC::SetPen(
1423 const wxPen& rPen
1424 )
1425 {
1426 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1427
1428 if (m_pen == rPen)
1429 return;
1430 m_pen = rPen;
1431 if (!m_pen.Ok())
1432 return;
1433
1434 if (m_hOldPen)
1435 m_hOldPen = 0L;
1436 m_pen = rPen;
1437
1438 if (!m_pen.Ok())
1439 {
1440 if (m_hOldPen)
1441 {
1442 m_pen.SetPS((HPS)m_hOldPen);
1443 }
1444 m_hOldPen = 0L;
1445 }
1446
1447 if (m_pen.Ok())
1448 {
1449 if (m_pen.GetResourceHandle())
1450 {
1451 m_pen.SetPS(m_hPS);
1452 if (!m_hOldPen)
1453 m_hOldPen = m_pen.GetPS();
1454 }
1455 }
1456 }
1457
1458 void wxDC::SetBrush(
1459 const wxBrush& rBrush
1460 )
1461 {
1462 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1463
1464 if (m_hOldBrush)
1465 m_hOldBrush = 0L;
1466 m_brush = rBrush;
1467 if (!m_brush.Ok())
1468 if (m_brush == rBrush)
1469 return;
1470 if (!m_brush.Ok())
1471 if (m_hOldBrush)
1472 m_hOldBrush = 0L;
1473
1474 if (!m_brush.Ok())
1475 {
1476 if (m_hOldBrush)
1477 {
1478 m_brush.SetPS((HPS)m_hOldBrush);
1479 }
1480 m_hOldBrush = 0L;
1481 }
1482
1483 if (m_brush.Ok())
1484 {
1485 if (m_brush.GetResourceHandle())
1486 {
1487 m_brush.SetPS(m_hPS);
1488 if (!m_hOldBrush)
1489 m_hOldBrush = (WXHWND)m_brush.GetPS();
1490 }
1491 }
1492 } // end of wxDC::SetBrush
1493
1494 void wxDC::SetBackground(
1495 const wxBrush& rBrush
1496 )
1497 {
1498 m_backgroundBrush = rBrush;
1499 if (!m_backgroundBrush.Ok())
1500 return;
1501 if (m_pCanvas)
1502 {
1503 bool bCustomColours = TRUE;
1504
1505 //
1506 // If we haven't specified wxUSER_COLOURS, don't allow the panel/dialog box to
1507 // change background colours from the control-panel specified colours.
1508 //
1509 if (m_pCanvas->IsKindOf(CLASSINFO(wxWindow)) &&
1510 ((m_pCanvas->GetWindowStyleFlag() & wxUSER_COLOURS) != wxUSER_COLOURS))
1511 bCustomColours = FALSE;
1512 if (bCustomColours)
1513 {
1514 if (m_backgroundBrush.GetStyle()==wxTRANSPARENT)
1515 {
1516 m_pCanvas->SetTransparent(TRUE);
1517 }
1518 else
1519 {
1520 //
1521 // Setting the background brush of a DC
1522 // doesn't affect the window background colour. However,
1523 // I'm leaving in the transparency setting because it's needed by
1524 // various controls (e.g. wxStaticText) to determine whether to draw
1525 // transparently or not. TODO: maybe this should be a new function
1526 // wxWindow::SetTransparency(). Should that apply to the child itself, or the
1527 // parent?
1528 // m_canvas->SetBackgroundColour(m_backgroundBrush.GetColour());
1529 //
1530 m_pCanvas->SetTransparent(FALSE);
1531 }
1532 }
1533 }
1534 COLORREF vNewColor = m_backgroundBrush.GetColour().GetPixel();
1535 (void)::GpiSetBackColor((HPS)m_hPS, (LONG)vNewColor);
1536 } // end of wxDC::SetBackground
1537
1538 void wxDC::SetBackgroundMode(
1539 int nMode
1540 )
1541 {
1542 m_backgroundMode = nMode;
1543 } // end of wxDC::SetBackgroundMode
1544
1545 void wxDC::SetLogicalFunction(
1546 int nFunction
1547 )
1548 {
1549 m_logicalFunction = nFunction;
1550 SetRop((WXHDC)m_hDC);
1551 } // wxDC::SetLogicalFunction
1552
1553 void wxDC::SetRop(
1554 WXHDC hDC
1555 )
1556 {
1557 if (!hDC || m_logicalFunction < 0)
1558 return;
1559
1560 LONG lCRop;
1561 switch (m_logicalFunction)
1562 {
1563 case wxXOR:
1564 lCRop = FM_XOR;
1565 break;
1566
1567 case wxINVERT:
1568 lCRop = FM_INVERT;
1569 break;
1570
1571 case wxOR_REVERSE:
1572 lCRop = FM_MERGESRCNOT;
1573 break;
1574
1575 case wxAND_REVERSE:
1576 lCRop = FM_NOTMASKSRC;
1577 break;
1578
1579 case wxCLEAR:
1580 lCRop = FM_ONE;
1581 break;
1582
1583 case wxSET:
1584 lCRop = FM_ZERO;
1585 break;
1586
1587 case wxSRC_INVERT:
1588 lCRop = FM_MERGENOTSRC;
1589 break;
1590
1591 case wxOR_INVERT:
1592 lCRop = FM_MERGESRCNOT;
1593 break;
1594
1595 case wxAND:
1596 lCRop = FM_AND;
1597 break;
1598
1599 case wxOR:
1600 lCRop = FM_OR;
1601 break;
1602
1603 case wxAND_INVERT:
1604 lCRop = FM_SUBTRACT;
1605 break;
1606
1607 case wxEQUIV:
1608 case wxNAND:
1609 case wxCOPY:
1610 default:
1611 lCRop = FM_OVERPAINT;
1612 break;
1613 }
1614 ::GpiSetMix((HPS)hDC, lCRop);
1615 } // end of wxDC::SetRop
1616
1617 bool wxDC::StartDoc(
1618 const wxString& rsMessage
1619 )
1620 {
1621 // We might be previewing, so return TRUE to let it continue.
1622 return TRUE;
1623 } // end of wxDC::StartDoc
1624
1625 void wxDC::EndDoc()
1626 {
1627 } // end of wxDC::EndDoc
1628
1629 void wxDC::StartPage()
1630 {
1631 } // end of wxDC::StartPage
1632
1633 void wxDC::EndPage()
1634 {
1635 } // end of wxDC::EndPage
1636
1637 // ---------------------------------------------------------------------------
1638 // text metrics
1639 // ---------------------------------------------------------------------------
1640
1641 wxCoord wxDC::GetCharHeight() const
1642 {
1643 FONTMETRICS vFM; // metrics structure
1644
1645 ::GpiQueryFontMetrics( m_hPS
1646 ,sizeof(FONTMETRICS)
1647 ,&vFM
1648 );
1649 return YDEV2LOGREL(vFM.lXHeight);
1650 }
1651
1652 wxCoord wxDC::GetCharWidth() const
1653 {
1654 FONTMETRICS vFM; // metrics structure
1655
1656 ::GpiQueryFontMetrics( m_hPS
1657 ,sizeof(FONTMETRICS)
1658 ,&vFM
1659 );
1660 return XDEV2LOGREL(vFM.lAveCharWidth);
1661 }
1662
1663 void wxDC::DoGetTextExtent(
1664 const wxString& rsString
1665 , wxCoord* pvX
1666 , wxCoord* pvY
1667 , wxCoord* pvDescent
1668 , wxCoord* pvExternalLeading
1669 , wxFont* pTheFont
1670 ) const
1671 {
1672 POINTL avPoint[TXTBOX_COUNT];
1673 POINTL vPtMin;
1674 POINTL vPtMax;
1675 int i;
1676 int l;
1677 FONTMETRICS vFM; // metrics structure
1678 BOOL bRc;
1679 char* pStr;
1680 ERRORID vErrorCode; // last error id code
1681 wxFont* pFontToUse = (wxFont*)pTheFont;
1682
1683 char zMsg[128]; // DEBUG
1684 wxString sError;
1685
1686 if (!pFontToUse)
1687 pFontToUse = (wxFont*)&m_font;
1688 l = rsString.length();
1689 pStr = (PCH) rsString.c_str();
1690
1691 //
1692 // In world coordinates.
1693 //
1694 bRc = ::GpiQueryTextBox( m_hPS
1695 ,l
1696 ,pStr
1697 ,TXTBOX_COUNT // return maximum information
1698 ,avPoint // array of coordinates points
1699 );
1700 if(!bRc)
1701 {
1702 vErrorCode = ::WinGetLastError(wxGetInstance());
1703 sError = wxPMErrorToStr(vErrorCode);
1704 // DEBUG
1705 sprintf(zMsg, "GpiQueryTextBox for %s: failed with Error: %x - %s", pStr, vErrorCode, sError.c_str());
1706 (void)wxMessageBox( "wxWindows Menu sample"
1707 ,zMsg
1708 ,wxICON_INFORMATION
1709 );
1710 }
1711
1712 vPtMin.x = avPoint[0].x;
1713 vPtMax.x = avPoint[0].x;
1714 vPtMin.y = avPoint[0].y;
1715 vPtMax.y = avPoint[0].y;
1716 for (i = 1; i < 4; i++)
1717 {
1718 if(vPtMin.x > avPoint[i].x) vPtMin.x = avPoint[i].x;
1719 if(vPtMin.y > avPoint[i].y) vPtMin.y = avPoint[i].y;
1720 if(vPtMax.x < avPoint[i].x) vPtMax.x = avPoint[i].x;
1721 if(vPtMax.y < avPoint[i].y) vPtMax.y = avPoint[i].y;
1722 }
1723 ::GpiQueryFontMetrics( m_hPS
1724 ,sizeof(FONTMETRICS)
1725 ,&vFM
1726 );
1727
1728 if (pvX)
1729 *pvX = (wxCoord)(vPtMax.x - vPtMin.x + 1);
1730 if (pvY)
1731 *pvY = (wxCoord)(vPtMax.y - vPtMin.y + 1);
1732 if (pvDescent)
1733 *pvDescent = vFM.lMaxDescender;
1734 if (pvExternalLeading)
1735 *pvExternalLeading = vFM.lExternalLeading;
1736 }
1737
1738 void wxDC::SetMapMode(
1739 int nMode
1740 )
1741 {
1742 int nPixelWidth = 0;
1743 int nPixelHeight = 0;
1744 int nMmWidth = 1;
1745 int nMmHeight = 1;
1746 LONG lArray[CAPS_VERTICAL_RESOLUTION];
1747
1748 m_mappingMode = nMode;
1749
1750 if(::DevQueryCaps( m_hDC
1751 ,CAPS_FAMILY
1752 ,CAPS_VERTICAL_RESOLUTION
1753 ,lArray
1754 ))
1755 {
1756 LONG lHorzRes;
1757 LONG lVertRes;
1758
1759 nPixelWidth = lArray[CAPS_WIDTH];
1760 nPixelHeight = lArray[CAPS_HEIGHT];
1761 lHorzRes = lArray[CAPS_HORIZONTAL_RESOLUTION]; // returns pel/meter
1762 lVertRes = lArray[CAPS_VERTICAL_RESOLUTION]; // returns pel/meter
1763 nMmWidth = (lHorzRes/1000) * nPixelWidth;
1764 nMmWidth = (lVertRes/1000) * nPixelHeight;
1765 }
1766 if ((nPixelWidth == 0) || (nPixelHeight == 0) || (nMmWidth == 0) || (nMmHeight == 0))
1767 {
1768 return;
1769 }
1770
1771 double dMm2pixelsX = nPixelWidth/nMmWidth;
1772 double dMm2pixelsY = nPixelHeight/nMmHeight;
1773
1774 switch (nMode)
1775 {
1776 case wxMM_TWIPS:
1777 m_logicalScaleX = (twips2mm * dMm2pixelsX);
1778 m_logicalScaleY = (twips2mm * dMm2pixelsY);
1779 break;
1780
1781 case wxMM_POINTS:
1782 m_logicalScaleX = (pt2mm * dMm2pixelsX);
1783 m_logicalScaleY = (pt2mm * dMm2pixelsY);
1784 break;
1785
1786 case wxMM_METRIC:
1787 m_logicalScaleX = dMm2pixelsX;
1788 m_logicalScaleY = dMm2pixelsY;
1789 break;
1790
1791 case wxMM_LOMETRIC:
1792 m_logicalScaleX = (dMm2pixelsX/10.0);
1793 m_logicalScaleY = (dMm2pixelsY/10.0);
1794 break;
1795
1796 case wxMM_TEXT:
1797 default:
1798 m_logicalScaleX = 1.0;
1799 m_logicalScaleY = 1.0;
1800 break;
1801 }
1802 SIZEL vSize;
1803 ULONG ulOptions;
1804
1805 ulOptions = ::GpiQueryPS(m_hPS, &vSize);
1806 if (!ulOptions & PU_ARBITRARY)
1807 {
1808 ulOptions = PU_ARBITRARY | GPIF_DEFAULT;
1809 ::GpiSetPS(m_hPS, &vSize, ulOptions);
1810 }
1811 m_nWindowExtX = (int)MS_XDEV2LOG(VIEWPORT_EXTENT);
1812 m_nWindowExtY = (int)MS_YDEV2LOG(VIEWPORT_EXTENT);
1813 // ????
1814 }; // end of wxDC::SetMapMode
1815
1816 void wxDC::SetUserScale(
1817 double dX
1818 , double dY
1819 )
1820 {
1821 m_userScaleX = dX;
1822 m_userScaleY = dY;
1823
1824 SetMapMode(m_mappingMode);
1825 } // end of wxDC::SetUserScale
1826
1827 void wxDC::SetAxisOrientation(
1828 bool bXLeftRight
1829 , bool bYBottomUp
1830 )
1831 {
1832 m_signX = bXLeftRight ? 1 : -1;
1833 m_signY = bYBottomUp ? -1 : 1;
1834
1835 SetMapMode(m_mappingMode);
1836 } // end of wxDC::SetAxisOrientation
1837
1838 void wxDC::SetSystemScale(
1839 double dX
1840 , double dY
1841 )
1842 {
1843 m_scaleX = dX;
1844 m_scaleY = dY;
1845
1846 SetMapMode(m_mappingMode);
1847 } // end of wxDC::SetSystemScale
1848
1849 void wxDC::SetLogicalOrigin(
1850 wxCoord vX
1851 , wxCoord vY
1852 )
1853 {
1854 RECTL vRect;
1855
1856 ::GpiQueryPageViewport( m_hPS
1857 ,&vRect
1858 );
1859 vRect.xRight -= vX;
1860 vRect.yTop += vY;
1861 vRect.xLeft = vX;
1862 vRect.yBottom = vY;
1863 ::GpiSetPageViewport( m_hPS
1864 ,&vRect
1865 );
1866 }; // end of wxDC::SetLogicalOrigin
1867
1868 void wxDC::SetDeviceOrigin(
1869 wxCoord vX
1870 , wxCoord vY
1871 )
1872 {
1873 RECTL vRect;
1874
1875 m_deviceOriginX = vX;
1876 m_deviceOriginY = vY;
1877 ::GpiQueryPageViewport( m_hPS
1878 ,&vRect
1879 );
1880 vRect.xLeft += vX;
1881 vRect.xRight += vX;
1882 vRect.yBottom -= vY;
1883 vRect.yTop -= vY;
1884 ::GpiSetPageViewport( m_hPS
1885 ,&vRect
1886 );
1887 }; // end of wxDC::SetDeviceOrigin
1888
1889 // ---------------------------------------------------------------------------
1890 // coordinates transformations
1891 // ---------------------------------------------------------------------------
1892
1893 wxCoord wxDCBase::DeviceToLogicalX(wxCoord x) const
1894 {
1895 return (wxCoord) (((x) - m_deviceOriginX)/(m_logicalScaleX*m_userScaleX*m_signX*m_scaleX) - m_logicalOriginX);
1896 }
1897
1898 wxCoord wxDCBase::DeviceToLogicalXRel(wxCoord x) const
1899 {
1900 // axis orientation is not taken into account for conversion of a distance
1901 return (wxCoord) ((x)/(m_logicalScaleX*m_userScaleX*m_scaleX));
1902 }
1903
1904 wxCoord wxDCBase::DeviceToLogicalY(wxCoord y) const
1905 {
1906 return (wxCoord) (((y) - m_deviceOriginY)/(m_logicalScaleY*m_userScaleY*m_signY*m_scaleY) - m_logicalOriginY);
1907 }
1908
1909 wxCoord wxDCBase::DeviceToLogicalYRel(wxCoord y) const
1910 {
1911 // axis orientation is not taken into account for conversion of a distance
1912 return (wxCoord) ((y)/(m_logicalScaleY*m_userScaleY*m_scaleY));
1913 }
1914
1915 wxCoord wxDCBase::LogicalToDeviceX(wxCoord x) const
1916 {
1917 return (wxCoord) ((x - m_logicalOriginX)*m_logicalScaleX*m_userScaleX*m_signX*m_scaleX + m_deviceOriginX);
1918 }
1919
1920 wxCoord wxDCBase::LogicalToDeviceXRel(wxCoord x) const
1921 {
1922 // axis orientation is not taken into account for conversion of a distance
1923 return (wxCoord) (x*m_logicalScaleX*m_userScaleX*m_scaleX);
1924 }
1925
1926 wxCoord wxDCBase::LogicalToDeviceY(wxCoord y) const
1927 {
1928 return (wxCoord) ((y - m_logicalOriginY)*m_logicalScaleY*m_userScaleY*m_signY*m_scaleY + m_deviceOriginY);
1929 }
1930
1931 wxCoord wxDCBase::LogicalToDeviceYRel(wxCoord y) const
1932 {
1933 // axis orientation is not taken into account for conversion of a distance
1934 return (wxCoord) (y*m_logicalScaleY*m_userScaleY*m_scaleY);
1935 }
1936
1937 // ---------------------------------------------------------------------------
1938 // bit blit
1939 // ---------------------------------------------------------------------------
1940
1941 bool wxDC::DoBlit(
1942 wxCoord vXdest
1943 , wxCoord vYdest
1944 , wxCoord vWidth
1945 , wxCoord vHeight
1946 , wxDC* pSource
1947 , wxCoord vXsrc
1948 , wxCoord vYsrc
1949 , int nRop
1950 , bool bUseMask
1951 , wxCoord vXsrcMask
1952 , wxCoord vYsrcMask
1953 )
1954 {
1955 wxMask* pMask = NULL;
1956 CHARBUNDLE vCbnd;
1957 COLORREF vOldTextColor;
1958 COLORREF vOldBackground = ::GpiQueryBackColor(m_hPS);
1959
1960 if (bUseMask)
1961 {
1962 const wxBitmap& rBmp = pSource->m_vSelectedBitmap;
1963
1964 pMask = rBmp.GetMask();
1965 if (!(rBmp.Ok() && pMask && pMask->GetMaskBitmap()))
1966 {
1967 bUseMask = FALSE;
1968 }
1969 }
1970
1971 ::GpiQueryAttrs( m_hPS
1972 ,PRIM_CHAR
1973 ,CBB_COLOR
1974 ,&vCbnd
1975 );
1976 vOldTextColor = (COLORREF)vCbnd.lColor;
1977
1978 if (m_textForegroundColour.Ok())
1979 {
1980 vCbnd.lColor = (LONG)m_textForegroundColour.GetPixel();
1981 ::GpiSetAttrs( m_hPS // presentation-space handle
1982 ,PRIM_CHAR // Char primitive.
1983 ,CBB_COLOR // sets color.
1984 ,0
1985 ,&vCbnd // buffer for attributes.
1986 );
1987 }
1988 if (m_textBackgroundColour.Ok())
1989 {
1990 ::GpiSetBackColor(m_hPS, (LONG)m_textBackgroundColour.GetPixel());
1991 }
1992
1993 LONG lRop = ROP_SRCCOPY;
1994
1995 switch (nRop)
1996 {
1997 case wxXOR: lRop = ROP_SRCINVERT; break;
1998 case wxINVERT: lRop = ROP_DSTINVERT; break;
1999 case wxOR_REVERSE: lRop = 0x00DD0228; break;
2000 case wxAND_REVERSE: lRop = ROP_SRCERASE; break;
2001 case wxCLEAR: lRop = ROP_ZERO; break;
2002 case wxSET: lRop = ROP_ONE; break;
2003 case wxOR_INVERT: lRop = ROP_MERGEPAINT; break;
2004 case wxAND: lRop = ROP_SRCAND; break;
2005 case wxOR: lRop = ROP_SRCPAINT; break;
2006 case wxEQUIV: lRop = 0x00990066; break;
2007 case wxNAND: lRop = 0x007700E6; break;
2008 case wxAND_INVERT: lRop = 0x00220326; break;
2009 case wxCOPY: lRop = ROP_SRCCOPY; break;
2010 case wxNO_OP: lRop = ROP_NOTSRCERASE; break;
2011 case wxSRC_INVERT: lRop = ROP_SRCINVERT; break;
2012 case wxNOR: lRop = ROP_NOTSRCCOPY; break;
2013 default:
2014 wxFAIL_MSG( wxT("unsupported logical function") );
2015 return FALSE;
2016 }
2017
2018 bool bSuccess;
2019
2020 if (bUseMask)
2021 {
2022 //
2023 // Blit bitmap with mask
2024 //
2025
2026 //
2027 // Create a temp buffer bitmap and DCs/PSs to access it and the mask
2028 //
2029 HDC hDCMask;
2030 HDC hDCBuffer;
2031 HPS hPSMask;
2032 HPS hPSBuffer;
2033 DEVOPENSTRUC vDOP = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
2034 BITMAPINFOHEADER2 vBmpHdr;
2035 HBITMAP hBufBitmap;
2036 SIZEL vSize = {0, 0};
2037 LONG rc;
2038
2039 memset(&vBmpHdr, 0, sizeof(BITMAPINFOHEADER2));
2040 vBmpHdr.cbFix = sizeof(BITMAPINFOHEADER2);
2041 vBmpHdr.cx = vWidth;
2042 vBmpHdr.cy = vHeight;
2043 vBmpHdr.cPlanes = 1;
2044 vBmpHdr.cBitCount = 24;
2045
2046 #if wxUSE_DC_CACHEING
2047 if (TRUE)
2048 {
2049 //
2050 // create a temp buffer bitmap and DCs to access it and the mask
2051 //
2052 wxDCCacheEntry* pDCCacheEntry1 = FindDCInCache( NULL
2053 ,pSource->GetHPS()
2054 );
2055 wxDCCacheEntry* pDCCacheEntry2 = FindDCInCache( pDCCacheEntry1
2056 ,GetHPS()
2057 );
2058 wxDCCacheEntry* pBitmapCacheEntry = FindBitmapInCache( GetHPS()
2059 ,vWidth
2060 ,vHeight
2061 );
2062
2063 hPSMask = pDCCacheEntry1->m_hPS;
2064 hDCBuffer = (HDC)pDCCacheEntry2->m_hPS;
2065 hBufBitmap = (HBITMAP)pBitmapCacheEntry->m_hBitmap;
2066 }
2067 else
2068 #endif
2069 {
2070 hDCMask = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDOP, NULLHANDLE);
2071 hDCBuffer = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDOP, NULLHANDLE);
2072 hPSMask = ::GpiCreatePS(vHabmain, hDCMask, &vSize, PU_PELS | GPIT_MICRO | GPIA_ASSOC);
2073 hPSBuffer = ::GpiCreatePS(vHabmain, hDCBuffer, &vSize, PU_PELS | GPIT_MICRO | GPIA_ASSOC);
2074 hBufBitmap = ::GpiCreateBitmap(GetHPS(), &vBmpHdr, 0L, NULL, NULL);
2075 }
2076
2077 POINTL aPoint1[4] = { 0, 0
2078 ,vWidth, vHeight
2079 ,vXdest, vYdest
2080 ,vXdest + vWidth, vYdest + vHeight
2081 };
2082 POINTL aPoint2[4] = { 0, 0
2083 ,vWidth, vHeight
2084 ,vXsrc, vYsrc
2085 ,vXsrc + vWidth, vYsrc + vHeight
2086 };
2087 POINTL aPoint3[4] = { vXdest, vYdest
2088 ,vXdest + vWidth, vYdest + vHeight
2089 ,vXsrc, vYsrc
2090 ,vXsrc + vWidth, vYsrc + vHeight
2091 };
2092 POINTL aPoint4[4] = { vXdest, vYdest
2093 ,vXdest + vWidth, vYdest + vHeight
2094 ,0, 0
2095 ,vWidth, vHeight
2096 };
2097 ::GpiSetBitmap(hPSMask, (HBITMAP) pMask->GetMaskBitmap());
2098 ::GpiSetBitmap(hPSBuffer, (HBITMAP) hBufBitmap);
2099
2100 //
2101 // Copy dest to buffer
2102 //
2103 rc = ::GpiBitBlt( hPSBuffer
2104 ,GetHPS()
2105 ,4L
2106 ,aPoint1
2107 ,ROP_SRCCOPY
2108 ,BBO_IGNORE
2109 );
2110 if (rc == GPI_ERROR)
2111 {
2112 wxLogLastError(wxT("BitBlt"));
2113 }
2114
2115 //
2116 // Copy src to buffer using selected raster op
2117 //
2118 rc = ::GpiBitBlt( hPSBuffer
2119 ,GetHPS()
2120 ,4L
2121 ,aPoint2
2122 ,lRop
2123 ,BBO_IGNORE
2124 );
2125 if (rc == GPI_ERROR)
2126 {
2127 wxLogLastError(wxT("BitBlt"));
2128 }
2129
2130 //
2131 // Set masked area in buffer to BLACK (pixel value 0)
2132 //
2133 COLORREF vPrevBkCol = ::GpiQueryBackColor(GetHPS());
2134 COLORREF vPrevCol = ::GpiQueryColor(GetHPS());
2135
2136 ::GpiSetBackColor(GetHPS(), OS2RGB(255, 255, 255));
2137 ::GpiSetColor(GetHPS(), OS2RGB(0, 0, 0));
2138
2139 rc = ::GpiBitBlt( hPSBuffer
2140 ,hPSMask
2141 ,4L
2142 ,aPoint2
2143 ,ROP_SRCAND
2144 ,BBO_IGNORE
2145 );
2146 if (rc == GPI_ERROR)
2147 {
2148 wxLogLastError(wxT("BitBlt"));
2149 }
2150
2151 //
2152 // Set unmasked area in dest to BLACK
2153 //
2154 ::GpiSetBackColor(GetHPS(), OS2RGB(0, 0, 0));
2155 ::GpiSetColor(GetHPS(), OS2RGB(255, 255, 255));
2156 rc = ::GpiBitBlt( GetHPS()
2157 ,hPSMask
2158 ,4L
2159 ,aPoint3
2160 ,ROP_SRCAND
2161 ,BBO_IGNORE
2162 );
2163 if (rc == GPI_ERROR)
2164 {
2165 wxLogLastError(wxT("BitBlt"));
2166 }
2167
2168 //
2169 // Restore colours to original values
2170 //
2171 ::GpiSetBackColor(GetHPS(), vPrevBkCol);
2172 ::GpiSetColor(GetHPS(), vPrevCol);
2173
2174 //
2175 // OR buffer to dest
2176 //
2177 rc = ::GpiBitBlt( GetHPS()
2178 ,hPSMask
2179 ,4L
2180 ,aPoint4
2181 ,ROP_SRCPAINT
2182 ,BBO_IGNORE
2183 );
2184 if (rc == GPI_ERROR)
2185 {
2186 bSuccess = FALSE;
2187 wxLogLastError(wxT("BitBlt"));
2188 }
2189
2190 //
2191 // Tidy up temporary DCs and bitmap
2192 //
2193 ::GpiSetBitmap(hPSMask, NULLHANDLE);
2194 ::GpiSetBitmap(hPSBuffer, NULLHANDLE);
2195 #if !wxUSE_DC_CACHEING
2196 ::GpiDestroyPS(hPSMask);
2197 ::GpiDestroyPS(hPSBuffer);
2198 ::DevCloseDC(hDCMask);
2199 ::DevCloseDC(hDCBuffer);
2200 ::GpiDeleteBitmap(hBufBitmap);
2201 #endif
2202 bSuccess = TRUE;
2203 }
2204 else // no mask, just BitBlt() it
2205 {
2206 POINTL aPoint[4] = { vXdest, vYdest
2207 ,vXdest + vWidth, vYdest + vHeight
2208 ,vXsrc, vYsrc
2209 ,vXsrc + vWidth, vYsrc + vHeight
2210 };
2211
2212 bSuccess = (::GpiBitBlt( m_hPS
2213 ,pSource->GetHPS()
2214 ,4L
2215 ,aPoint
2216 ,lRop
2217 ,BBO_IGNORE
2218 ) != GPI_ERROR);
2219 if (!bSuccess )
2220 {
2221 wxLogLastError(wxT("BitBlt"));
2222 }
2223 }
2224 vCbnd.lColor = (LONG)vOldTextColor;
2225 ::GpiSetAttrs( m_hPS // presentation-space handle
2226 ,PRIM_CHAR // Char primitive.
2227 ,CBB_COLOR // sets color.
2228 ,0
2229 ,&vCbnd // buffer for attributes.
2230 );
2231 ::GpiSetBackColor(m_hPS, (LONG)vOldBackground);
2232 return bSuccess;
2233 }
2234
2235 void wxDC::DoGetSize(
2236 int* pnWidth
2237 , int* pnHeight
2238 ) const
2239 {
2240 LONG lArray[CAPS_HEIGHT];
2241
2242 if(::DevQueryCaps( m_hDC
2243 ,CAPS_FAMILY
2244 ,CAPS_HEIGHT
2245 ,lArray
2246 ))
2247 {
2248 *pnWidth = lArray[CAPS_WIDTH];
2249 *pnHeight = lArray[CAPS_HEIGHT];
2250 }
2251 }; // end of wxDC::DoGetSize(
2252
2253 void wxDC::DoGetSizeMM(
2254 int* pnWidth
2255 , int* pnHeight
2256 ) const
2257 {
2258 LONG lArray[CAPS_VERTICAL_RESOLUTION];
2259
2260 if(::DevQueryCaps( m_hDC
2261 ,CAPS_FAMILY
2262 ,CAPS_VERTICAL_RESOLUTION
2263 ,lArray
2264 ))
2265 {
2266 int nWidth;
2267 int nHeight;
2268 int nHorzRes;
2269 int nVertRes;
2270
2271 nWidth = lArray[CAPS_WIDTH];
2272 nHeight = lArray[CAPS_HEIGHT];
2273 nHorzRes = lArray[CAPS_HORIZONTAL_RESOLUTION]; // returns pel/meter
2274 nVertRes = lArray[CAPS_VERTICAL_RESOLUTION]; // returns pel/meter
2275 nWidth = (nHorzRes/1000) * nWidth;
2276 nHeight = (nVertRes/1000) * nHeight;
2277 }
2278 }; // end of wxDC::DoGetSizeMM
2279
2280 wxSize wxDC::GetPPI() const
2281 {
2282 LONG lArray[CAPS_VERTICAL_RESOLUTION];
2283 int nWidth;
2284 int nHeight;
2285
2286 if(::DevQueryCaps( m_hDC
2287 ,CAPS_FAMILY
2288 ,CAPS_VERTICAL_RESOLUTION
2289 ,lArray
2290 ))
2291 {
2292 int nPelWidth;
2293 int nPelHeight;
2294 int nHorzRes;
2295 int nVertRes;
2296
2297 nPelWidth = lArray[CAPS_WIDTH];
2298 nPelHeight = lArray[CAPS_HEIGHT];
2299 nHorzRes = lArray[CAPS_HORIZONTAL_RESOLUTION]; // returns pel/meter
2300 nVertRes = lArray[CAPS_VERTICAL_RESOLUTION]; // returns pel/meter
2301 nWidth = (nHorzRes/39.3) * nPelWidth;
2302 nHeight = (nVertRes/39.3) * nPelHeight;
2303 }
2304 return (wxSize(nWidth,nHeight));
2305 } // end of wxDC::GetPPI
2306
2307 void wxDC::SetLogicalScale(
2308 double dX
2309 , double dY
2310 )
2311 {
2312 m_logicalScaleX = dX;
2313 m_logicalScaleY = dY;
2314 }; // end of wxDC::SetLogicalScale
2315
2316 #if WXWIN_COMPATIBILITY
2317 void wxDC::DoGetTextExtent(const wxString& string, float *x, float *y,
2318 float *descent, float *externalLeading,
2319 wxFont *theFont, bool use16bit) const
2320 {
2321 wxCoord x1, y1, descent1, externalLeading1;
2322 GetTextExtent(string, & x1, & y1, & descent1, & externalLeading1, theFont, use16bit);
2323 *x = x1; *y = y1;
2324 if (descent)
2325 *descent = descent1;
2326 if (externalLeading)
2327 *externalLeading = externalLeading1;
2328 }
2329 #endif
2330
wxWidgets (Impactor)