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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#if wxUSE_STATUSBAR
28 #include "wx/statusbr.h"
29#endif
30#endif
31
32#include "wx/dcprint.h"
33
34#include <string.h>
35#include <math.h>
36
37#include "wx/os2/private.h"
38
39 IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject)
40
41//
42// wxWindows uses the Microsoft convention that the origin is the UPPER left.
43// Native OS/2 however in the GPI and PM define the origin as the LOWER left.
44// In order to map OS/2 GPI/PM y coordinates to wxWindows coordinates we must
45// perform the following transformation:
46//
47// Parent object height: POBJHEIGHT
48// Desried origin: WXORIGINY
49// Object to place's height: OBJHEIGHT
50//
51// To get the OS2 position from the wxWindows one:
52//
53// OS2Y = POBJHEIGHT - (WXORIGINY + OBJHEIGHT)
54//
55// For OS/2 wxDC's we will always determine m_vRclPaint as the size of the
56// OS/2 Presentation Space associated with the device context. y is the
57// desired application's y coordinate of the origin in wxWindows space.
58// objy is the height of the object we are going to draw.
59//
60#define OS2Y(y, objy) ((m_vRclPaint.yTop - m_vRclPaint.yBottom) - (y + objy))
61
62// ---------------------------------------------------------------------------
63// constants
64// ---------------------------------------------------------------------------
65
66static const int VIEWPORT_EXTENT = 1000;
67
68static const int MM_POINTS = 9;
69static const int MM_METRIC = 10;
70
71// usually this is defined in math.h
72#ifndef M_PI
73 static const double M_PI = 3.14159265358979323846;
74#endif // M_PI
75
76// ---------------------------------------------------------------------------
77// private functions
78// ---------------------------------------------------------------------------
79
80// convert degrees to radians
81static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
82
83int SetTextColor(
84 HPS hPS
85, int nForegroundColour
86)
87{
88 CHARBUNDLE vCbnd;
89
90 vCbnd.lColor = nForegroundColour;
91 ::GpiSetAttrs( hPS // presentation-space handle
92 ,PRIM_CHAR // Char primitive.
93 ,CBB_COLOR // sets color.
94 ,0 //
95 ,&vCbnd // buffer for attributes.
96 );
97 return 0;
98}
99
100int QueryTextBkColor(
101 HPS hPS
102)
103{
104 CHARBUNDLE vCbnd;
105
106 ::GpiQueryAttrs( hPS // presentation-space handle
107 ,PRIM_CHAR // Char primitive.
108 ,CBB_BACK_COLOR // Background color.
109 ,&vCbnd // buffer for attributes.
110 );
111 return vCbnd.lBackColor;
112}
113
114
115int SetTextBkColor(
116 HPS hPS
117, int nBackgroundColour
118)
119{
120 CHARBUNDLE vCbnd;
121 int rc;
122
123 rc = QueryTextBkColor(hPS);
124
125 vCbnd.lBackColor = nBackgroundColour;
126 ::GpiSetAttrs(hPS, // presentation-space handle
127 PRIM_CHAR, // Char primitive.
128 CBB_BACK_COLOR, // sets color.
129 0,
130 &vCbnd // buffer for attributes.
131 );
132 return rc;
133}
134
135int SetBkMode(
136 HPS hPS
137, int nBackgroundMode
138)
139{
140 if(nBackgroundMode == wxTRANSPARENT)
141 ::GpiSetBackMix( hPS
142 ,BM_LEAVEALONE
143 );
144 else
145 // the background of the primitive takes over whatever is underneath.
146 ::GpiSetBackMix( hPS
147 ,BM_OVERPAINT
148 );
149 return 0;
150}
151
152// ===========================================================================
153// implementation
154// ===========================================================================
155
156#if wxUSE_DC_CACHEING
157
158/*
159 * This implementation is a bit ugly and uses the old-fashioned wxList class, so I will
160 * improve it in due course, either using arrays, or simply storing pointers to one
161 * entry for the bitmap, and two for the DCs. -- JACS
162 */
163
164// ---------------------------------------------------------------------------
165// wxDCCacheEntry
166// ---------------------------------------------------------------------------
167
168wxList wxDC::m_svBitmapCache;
169wxList wxDC::m_svDCCache;
170
171wxDCCacheEntry::wxDCCacheEntry(
172 WXHBITMAP hBitmap
173, int nWidth
174, int nHeight
175, int nDepth
176)
177{
178 m_hBitmap = hBitmap;
179 m_hPS = NULLHANDLE;
180 m_nWidth = nWidth;
181 m_nHeight = nHeight;
182 m_nDepth = nDepth;
183} // end of wxDCCacheEntry::wxDCCacheEntry
184
185wxDCCacheEntry::wxDCCacheEntry(
186 HPS hPS
187, int nDepth
188)
189{
190 m_hBitmap = NULLHANDLE;
191 m_hPS = hPS;
192 m_nWidth = 0;
193 m_nHeight = 0;
194 m_nDepth = nDepth;
195} // end of wxDCCacheEntry::wxDCCacheEntry
196
197wxDCCacheEntry::~wxDCCacheEntry()
198{
199 if (m_hBitmap)
200 ::GpiDeleteBitmap(m_hBitmap);
201 if (m_hPS)
202 ::GpiDestroyPS(m_hPS);
203} // end of wxDCCacheEntry::~wxDCCacheEntry
204
205wxDCCacheEntry* wxDC::FindBitmapInCache(
206 HPS hPS
207, int nWidth
208, int nHeight
209)
210{
211 int nDepth = 24; // we'll fix this later ::GetDeviceCaps((HDC) dc, PLANES) * ::GetDeviceCaps((HDC) dc, BITSPIXEL);
212 wxNode* pNode = m_svBitmapCache.First();
213 BITMAPINFOHEADER2 vBmpHdr;
214
215 while(pNode)
216 {
217 wxDCCacheEntry* pEntry = (wxDCCacheEntry*)pNode->Data();
218
219 if (pEntry->m_nDepth == nDepth)
220 {
221 memset(&vBmpHdr, 0, sizeof(BITMAPINFOHEADER2));
222
223 if (pEntry->m_nWidth < nWidth || pEntry->m_nHeight < nHeight)
224 {
225 ::GpiDeleteBitmap((HBITMAP)pEntry->m_hBitmap);
226 vBmpHdr.cbFix = sizeof(BITMAPINFOHEADER2);
227 vBmpHdr.cx = nWidth;
228 vBmpHdr.cy = nHeight;
229 vBmpHdr.cPlanes = 1;
230 vBmpHdr.cBitCount = nDepth;
231
232 pEntry->m_hBitmap = (WXHBITMAP) ::GpiCreateBitmap( hPS
233 ,&vBmpHdr
234 ,0L, NULL, NULL
235 );
236 if (!pEntry->m_hBitmap)
237 {
238 wxLogLastError(wxT("CreateCompatibleBitmap"));
239 }
240 pEntry->m_nWidth = nWidth;
241 pEntry->m_nHeight = nHeight;
242 return pEntry;
243 }
244 return pEntry;
245 }
246 pNode = pNode->Next();
247 }
248 memset(&vBmpHdr, 0, sizeof(BITMAPINFOHEADER2));
249 vBmpHdr.cbFix = sizeof(BITMAPINFOHEADER2);
250 vBmpHdr.cx = nWidth;
251 vBmpHdr.cy = nHeight;
252 vBmpHdr.cPlanes = 1;
253 vBmpHdr.cBitCount = nDepth;
254
255 WXHBITMAP hBitmap = (WXHBITMAP) ::GpiCreateBitmap( hPS
256 ,&vBmpHdr
257 ,0L, NULL, NULL
258 );
259 if (!hBitmap)
260 {
261 wxLogLastError(wxT("CreateCompatibleBitmap"));
262 }
263 wxDCCacheEntry* pEntry = new wxDCCacheEntry( hBitmap
264 ,nWidth
265 ,nHeight
266 ,nDepth
267 );
268 AddToBitmapCache(pEntry);
269 return pEntry;
270} // end of FindBitmapInCache
271
272wxDCCacheEntry* wxDC::FindDCInCache(
273 wxDCCacheEntry* pNotThis
274, HPS hPS
275)
276{
277 int nDepth = 24; // we'll fix this up later ::GetDeviceCaps((HDC) dc, PLANES) * ::GetDeviceCaps((HDC) dc, BITSPIXEL);
278 wxNode* pNode = m_svDCCache.First();
279
280 while(pNode)
281 {
282 wxDCCacheEntry* pEntry = (wxDCCacheEntry*)pNode->Data();
283
284 //
285 // Don't return the same one as we already have
286 //
287 if (!pNotThis || (pNotThis != pEntry))
288 {
289 if (pEntry->m_nDepth == nDepth)
290 {
291 return pEntry;
292 }
293 }
294 pNode = pNode->Next();
295 }
296 wxDCCacheEntry* pEntry = new wxDCCacheEntry( hPS
297 ,nDepth
298 );
299 AddToDCCache(pEntry);
300 return pEntry;
301} // end of wxDC::FindDCInCache
302
303void wxDC::AddToBitmapCache(
304 wxDCCacheEntry* pEntry
305)
306{
307 m_svBitmapCache.Append(pEntry);
308} // end of wxDC::AddToBitmapCache
309
310void wxDC::AddToDCCache(
311 wxDCCacheEntry* pEntry
312)
313{
314 m_svDCCache.Append(pEntry);
315} // end of wxDC::AddToDCCache
316
317void wxDC::ClearCache()
318{
319 m_svBitmapCache.DeleteContents(TRUE);
320 m_svBitmapCache.Clear();
321 m_svBitmapCache.DeleteContents(FALSE);
322 m_svDCCache.DeleteContents(TRUE);
323 m_svDCCache.Clear();
324 m_svDCCache.DeleteContents(FALSE);
325} // end of wxDC::ClearCache
326
327// Clean up cache at app exit
328class wxDCModule : public wxModule
329{
330public:
331 virtual bool OnInit() { return TRUE; }
332 virtual void OnExit() { wxDC::ClearCache(); }
333
334private:
335 DECLARE_DYNAMIC_CLASS(wxDCModule)
336}; // end of CLASS wxDCModule
337
338IMPLEMENT_DYNAMIC_CLASS(wxDCModule, wxModule)
339
340#endif // ndef for wxUSE_DC_CACHEING
341
342// ---------------------------------------------------------------------------
343// wxDC
344// ---------------------------------------------------------------------------
345
346wxDC::wxDC(void)
347{
348 wxColour vColor;
349
350 m_pCanvas = NULL;
351
352 m_hOldBitmap = 0;
353 m_hOldPen = 0;
354 m_hOldBrush = 0;
355 m_hOldFont = 0;
356 m_hOldPalette = 0;
357
358 m_bOwnsDC = FALSE;
359 m_hDC = 0;
360 m_hOldPS = NULL;
361 m_hPS = NULL;
362 m_bIsPaintTime = FALSE; // True at Paint Time
363
364 vColor.InitFromName("BLACK");
365 m_pen.SetColour(vColor);
366 vColor.Set("WHITE");
367 m_brush.SetColour(vColor);
368} // end of wxDC::wxDC
369
370wxDC::~wxDC(void)
371{
372 if ( m_hDC != 0 )
373 {
374 SelectOldObjects(m_hDC);
375
376 // if we own the HDC, we delete it, otherwise we just release it
377
378 if (m_bOwnsDC)
379 {
380 if(m_hPS)
381 {
382 ::GpiAssociate(m_hPS, NULLHANDLE);
383 ::GpiDestroyPS(m_hPS);
384 }
385 m_hPS = NULLHANDLE;
386 ::DevCloseDC((HDC)m_hDC);
387 }
388 else
389 {
390 //
391 // Just Dissacociate, not destroy if we don't own the DC
392 //
393 if(m_hPS)
394 {
395 ::GpiAssociate(m_hPS, NULLHANDLE);
396 }
397 }
398 }
399} // end of wxDC::~wxDC
400
401// This will select current objects out of the DC,
402// which is what you have to do before deleting the
403// DC.
404void wxDC::SelectOldObjects(
405 WXHDC hPS
406)
407{
408 if (hPS)
409 {
410 if (m_hOldBitmap)
411 {
412 ::GpiSetBitmap(hPS, (HBITMAP) m_hOldBitmap);
413 if (m_vSelectedBitmap.Ok())
414 {
415 m_vSelectedBitmap.SetSelectedInto(NULL);
416 }
417 }
418 m_hOldBitmap = 0;
419 //
420 // OS/2 has no other native GDI objects to set in a PS/DC like windows
421 //
422 m_hOldPen = 0;
423 m_hOldBrush = 0;
424 m_hOldFont = 0;
425 m_hOldPalette = 0;
426 }
427
428 m_brush = wxNullBrush;
429 m_pen = wxNullPen;
430 m_palette = wxNullPalette;
431 m_font = wxNullFont;
432 m_backgroundBrush = wxNullBrush;
433 m_vSelectedBitmap = wxNullBitmap;
434} // end of wxDC::SelectOldObjects
435
436// ---------------------------------------------------------------------------
437// clipping
438// ---------------------------------------------------------------------------
439
440#define DO_SET_CLIPPING_BOX() \
441{ \
442 RECTL rect; \
443 \
444 ::GpiQueryClipBox(m_hPS, &rect); \
445 \
446 m_clipX1 = (wxCoord) XDEV2LOG(rect.xLeft); \
447 m_clipY1 = (wxCoord) YDEV2LOG(rect.yTop); \
448 m_clipX2 = (wxCoord) XDEV2LOG(rect.xRight); \
449 m_clipY2 = (wxCoord) YDEV2LOG(rect.yBottom); \
450}
451
452void wxDC::DoSetClippingRegion(
453 wxCoord vX
454, wxCoord vY
455, wxCoord vWidth
456, wxCoord vHeight
457)
458{
459 RECTL vRect;
460
461 vY = OS2Y(vY,vHeight);
462 m_clipping = TRUE;
463 vRect.xLeft = vX;
464 vRect.yTop = vY + vHeight;
465 vRect.xRight = vX + vWidth;
466 vRect.yBottom = vY;
467 ::GpiIntersectClipRectangle(m_hPS, &vRect);
468 DO_SET_CLIPPING_BOX()
469} // end of wxDC::DoSetClippingRegion
470
471void wxDC::DoSetClippingRegionAsRegion(
472 const wxRegion& rRegion
473)
474{
475 wxCHECK_RET(rRegion.GetHRGN(), wxT("invalid clipping region"));
476 HRGN hRgnOld;
477
478 m_clipping = TRUE;
479 ::GpiSetClipRegion( m_hPS
480 ,(HRGN)rRegion.GetHRGN()
481 ,&hRgnOld
482 );
483 DO_SET_CLIPPING_BOX()
484} // end of wxDC::DoSetClippingRegionAsRegion
485
486void wxDC::DestroyClippingRegion(void)
487{
488 if (m_clipping && m_hPS)
489 {
490 HRGN hRgnOld;
491 RECTL vRect;
492
493 // TODO: this should restore the previous clipped region
494 // so that OnPaint processing works correctly, and
495 // the update doesn't get destroyed after the first
496 // DestroyClippingRegion
497 vRect.xLeft = XLOG2DEV(0);
498 vRect.yTop = YLOG2DEV(32000);
499 vRect.xRight = XLOG2DEV(32000);
500 vRect.yBottom = YLOG2DEV(0);
501
502 HRGN hRgn = ::GpiCreateRegion(m_hPS, 1, &vRect);
503
504 ::GpiSetClipRegion(m_hPS, hRgn, &hRgnOld);
505 }
506 m_clipping = FALSE;
507} // end of wxDC::DestroyClippingRegion
508
509// ---------------------------------------------------------------------------
510// query capabilities
511// ---------------------------------------------------------------------------
512
513bool wxDC::CanDrawBitmap() const
514{
515 return TRUE;
516}
517
518bool wxDC::CanGetTextExtent() const
519{
520 LONG lTechnology = 0L;
521
522 ::DevQueryCaps(GetHDC(), CAPS_TECHNOLOGY, 1L, &lTechnology);
523 return (lTechnology == CAPS_TECH_RASTER_DISPLAY) || (lTechnology == CAPS_TECH_RASTER_PRINTER);
524} // end of wxDC::CanGetTextExtent
525
526int wxDC::GetDepth() const
527{
528 LONG lArray[CAPS_COLOR_BITCOUNT];
529 int nBitsPerPixel;
530
531 if(::DevQueryCaps( GetHDC()
532 ,CAPS_FAMILY
533 ,CAPS_COLOR_BITCOUNT
534 ,lArray
535 ))
536 {
537 nBitsPerPixel = (int)lArray[CAPS_COLOR_BITCOUNT];
538 }
539 return nBitsPerPixel;
540} // end of wxDC::GetDepth
541
542// ---------------------------------------------------------------------------
543// drawing
544// ---------------------------------------------------------------------------
545
546void wxDC::Clear()
547{
548 //
549 // If this is a canvas DC then just fill with the background color
550 // Otherwise purge the whole thing
551 //
552 if (m_pCanvas)
553 {
554 RECTL vRect;
555
556 ::GpiQueryClipBox(m_hPS, &vRect);
557 ::WinFillRect(m_hPS, &vRect, ::GpiQueryBackColor(m_hPS));
558 }
559 else
560 ::GpiErase(m_hPS);
561} // end of wxDC::Clear
562
563bool wxDC::DoFloodFill(
564 wxCoord vX
565, wxCoord vY
566, const wxColour& rCol
567, int nStyle
568)
569{
570 POINTL vPtlPos;
571 LONG lColor;
572 LONG lOptions;
573 LONG lHits;
574 bool bSuccess = FALSE;
575
576 vPtlPos.x = vX; // Loads x-coordinate
577 vPtlPos.y = OS2Y(vY,0); // Loads y-coordinate
578 ::GpiMove(m_hPS, &vPtlPos); // Sets current position
579 lColor = rCol.GetPixel();
580 lOptions = FF_BOUNDARY;
581 if(wxFLOOD_SURFACE == nStyle)
582 lOptions = FF_SURFACE;
583
584 if ((lHits = ::GpiFloodFill(m_hPS, lOptions, lColor)) != GPI_ERROR)
585 bSuccess = TRUE;
586 return TRUE;
587} // end of wxDC::DoFloodFill
588
589bool wxDC::DoGetPixel(
590 wxCoord vX
591, wxCoord vY
592, wxColour* pCol
593) const
594{
595 POINTL vPoint;
596 LONG lColor;
597
598 vPoint.x = vX;
599 vPoint.y = OS2Y(vY,0);
600 lColor = ::GpiSetPel(m_hPS, &vPoint);
601
602 //
603 // Get the color of the pen
604 //
605 LONG lPencolor = 0x00ffffff;
606
607 if (m_pen.Ok())
608 {
609 lPencolor = m_pen.GetColour().GetPixel();
610 }
611
612 //
613 // return the color of the pixel
614 //
615 if(pCol)
616 pCol->Set( GetRValue(lColor)
617 ,GetGValue(lColor)
618 ,GetBValue(lColor)
619 );
620 return(lColor == lPencolor);
621} // end of wxDC::DoGetPixel
622
623void wxDC::DoCrossHair(
624 wxCoord vX
625, wxCoord vY
626)
627{
628 vY = OS2Y(vY,0);
629
630 wxCoord vX1 = vX - VIEWPORT_EXTENT;
631 wxCoord vY1 = vY - VIEWPORT_EXTENT;
632 wxCoord vX2 = vX + VIEWPORT_EXTENT;
633 wxCoord vY2 = vY + VIEWPORT_EXTENT;
634 POINTL vPoint[4];
635
636 vPoint[0].x = vX1;
637 vPoint[0].y = vY;
638
639 vPoint[1].x = vX2;
640 vPoint[1].y = vY;
641
642 ::GpiMove(m_hPS, &vPoint[0]);
643 ::GpiLine(m_hPS, &vPoint[1]);
644
645 vPoint[2].x = vX;
646 vPoint[2].y = vY1;
647
648 vPoint[3].x = vX;
649 vPoint[3].y = vY2;
650
651 ::GpiMove(m_hPS, &vPoint[2]);
652 ::GpiLine(m_hPS, &vPoint[3]);
653 CalcBoundingBox(vX1, vY1);
654 CalcBoundingBox(vX2, vY2);
655} // end of wxDC::DoCrossHair
656
657void wxDC::DoDrawLine(
658 wxCoord vX1
659, wxCoord vY1
660, wxCoord vX2
661, wxCoord vY2
662)
663{
664 POINTL vPoint[2];
665 COLORREF vColor = 0x00ffffff;
666
667 //
668 // Might be a memory DC with no Paint rect.
669 //
670 if (!(m_vRclPaint.yTop == 0 &&
671 m_vRclPaint.yBottom == 0 &&
672 m_vRclPaint.xRight == 0 &&
673 m_vRclPaint.xLeft == 0))
674 {
675 vY1 = OS2Y(vY1,0);
676 vY2 = OS2Y(vY2,0);
677 }
678 else
679 {
680 if (m_vSelectedBitmap != wxNullBitmap)
681 {
682 m_vRclPaint.yTop = m_vSelectedBitmap.GetHeight();
683 m_vRclPaint.xRight = m_vSelectedBitmap.GetWidth();
684 vY1 = OS2Y(vY1,0);
685 vY2 = OS2Y(vY2,0);
686 }
687 }
688 vPoint[0].x = vX1;
689 vPoint[0].y = vY1;
690 vPoint[1].x = vX2;
691 vPoint[1].y = vY2;
692 if (m_pen.Ok())
693 {
694 vColor = m_pen.GetColour().GetPixel();
695 }
696 ::GpiSetColor(m_hPS, vColor);
697 ::GpiMove(m_hPS, &vPoint[0]);
698 ::GpiLine(m_hPS, &vPoint[1]);
699 CalcBoundingBox(vX1, vY1);
700 CalcBoundingBox(vX2, vY2);
701} // end of wxDC::DoDrawLine
702
703//////////////////////////////////////////////////////////////////////////////
704// Draws an arc of a circle, centred on (xc, yc), with starting point (x1, y1)
705// and ending at (x2, y2). The current pen is used for the outline and the
706// current brush for filling the shape. The arc is drawn in an anticlockwise
707// direction from the start point to the end point.
708//////////////////////////////////////////////////////////////////////////////
709void wxDC::DoDrawArc(
710 wxCoord vX1
711, wxCoord vY1
712, wxCoord vX2
713, wxCoord vY2
714, wxCoord vXc
715, wxCoord vYc
716)
717{
718 POINTL vPtlPos;
719 POINTL vPtlArc[2]; // Structure for current position
720 int nDx;
721 int nDy;
722 double dRadius;
723 double dAngl1;
724 double dAngl2;
725 double dAnglmid;
726 wxCoord vXm;
727 wxCoord vYm;
728 ARCPARAMS vArcp; // Structure for arc parameters
729
730 if((vX1 == vXc && vY1 == vXc) || (vX2 == vXc && vY2 == vXc))
731 return; // Draw point ??
732 dRadius = 0.5 * ( hypot( (double)(vY1 - vYc)
733 ,(double)(vX1 - vXc)
734 ) +
735 hypot( (double)(vY2 - vYc)
736 ,(double)(vX2 - vXc)
737 )
738 );
739
740 dAngl1 = atan2( (double)(vY1 - vYc)
741 ,(double)(vX1 - vXc)
742 );
743 dAngl2 = atan2( (double)(vY2 - vYc)
744 ,(double)(vX2 - vXc)
745 );
746 if(dAngl2 < dAngl1)
747 dAngl2 += M_PI * 2;
748
749 //
750 // GpiPointArc can't draw full arc
751 //
752 if(dAngl2 == dAngl1 || (vX1 == vX2 && vY1 == vY2) )
753 {
754 //
755 // Medium point
756 //
757 dAnglmid = (dAngl1 + dAngl2)/2. + M_PI;
758 vXm = vXc + dRadius * cos(dAnglmid);
759 vYm = vYc + dRadius * sin(dAnglmid);
760 DoDrawArc( vX1, vY1
761 ,vXm, vYm
762 ,vXc, vYc
763 );
764 DoDrawArc( vXm, vYm
765 ,vX2, vY2
766 ,vXc, vYc
767 );
768 return;
769 }
770
771 //
772 // Medium point
773 //
774 dAnglmid = (dAngl1 + dAngl2)/2.;
775 vXm = vXc + dRadius * cos(dAnglmid);
776 vYm = vYc + dRadius * sin(dAnglmid);
777
778 //
779 // Ellipse main axis (r,q), (p,s) with center at (0,0) */
780 //
781 vArcp.lR = 0;
782 vArcp.lQ = 1;
783 vArcp.lP = 1;
784 vArcp.lS = 0;
785 ::GpiSetArcParams(m_hPS, &vArcp); // Sets parameters to default
786
787 vPtlPos.x = vX1; // Loads x-coordinate
788 vPtlPos.y = vY1; // Loads y-coordinate
789 ::GpiMove(m_hPS, &vPtlPos); // Sets current position
790 vPtlArc[0].x = vXm;
791 vPtlArc[0].y = vYm;
792 vPtlArc[1].x = vX2;
793 vPtlArc[1].y = vY2;
794 ::GpiPointArc(m_hPS, vPtlArc); // Draws the arc
795 CalcBoundingBox( (vXc - dRadius)
796 ,(vYc - dRadius)
797 );
798 CalcBoundingBox( (vXc + dRadius)
799 ,(vYc + dRadius)
800 );
801} // end of wxDC::DoDrawArc
802
803void wxDC::DoDrawCheckMark(
804 wxCoord vX1
805, wxCoord vY1
806, wxCoord vWidth
807, wxCoord vHeight
808)
809{
810 POINTL vPoint[2];
811
812 vY1 = OS2Y(vY1,vHeight);
813
814 vPoint[0].x = vX1;
815 vPoint[0].y = vY1;
816 vPoint[1].x = vX1 + vWidth;
817 vPoint[1].y = vY1 + vHeight;
818
819 ::GpiMove(m_hPS, &vPoint[0]);
820 ::GpiBox( m_hPS // handle to a presentation space
821 ,DRO_OUTLINE // draw the box outline ? or ?
822 ,&vPoint[1] // address of the corner
823 ,0L // horizontal corner radius
824 ,0L // vertical corner radius
825 );
826 if(vWidth > 4 && vHeight > 4)
827 {
828 int nTmp;
829
830 vPoint[0].x += 2; vPoint[0].y += 2;
831 vPoint[1].x -= 2; vPoint[1].y -= 2;
832 ::GpiMove(m_hPS, &vPoint[0]);
833 ::GpiLine(m_hPS, &vPoint[1]);
834 nTmp = vPoint[0].x;
835 vPoint[0].x = vPoint[1].x;
836 vPoint[1].x = nTmp;
837 ::GpiMove(m_hPS, &vPoint[0]);
838 ::GpiLine(m_hPS, &vPoint[1]);
839 }
840 CalcBoundingBox( vX1
841 ,vY1
842 );
843
844 wxCoord vX2 = vX1 + vWidth;
845 wxCoord vY2 = vY1 + vHeight;
846
847 CalcBoundingBox( vX2
848 ,vY2
849 );
850} // end of wxDC::DoDrawCheckMark
851
852void wxDC::DoDrawPoint(
853 wxCoord vX
854, wxCoord vY
855)
856{
857 POINTL vPoint;
858 COLORREF vColor = 0x00ffffff;
859
860 if (m_pen.Ok())
861 {
862 vColor = m_pen.GetColour().GetPixel();
863 }
864 ::GpiSetColor(m_hPS, vColor);
865 vPoint.x = vX;
866 vPoint.y = OS2Y(vY,0);
867 ::GpiSetPel(m_hPS, &vPoint);
868 CalcBoundingBox( vX
869 ,vY
870 );
871} // end of wxDC::DoDrawPoint
872
873void wxDC::DoDrawPolygon(
874 int n
875, wxPoint vPoints[]
876, wxCoord vXoffset
877, wxCoord vYoffset
878, int nFillStyle
879)
880{
881 ULONG ulCount = 1; // Number of polygons.
882 POLYGON vPlgn; // polygon.
883 ULONG flOptions = 0L; // Drawing options.
884
885//////////////////////////////////////////////////////////////////////////////
886// This contains fields of option bits... to draw boundary lines as well as
887// the area interior.
888//
889// Drawing boundary lines:
890// POLYGON_NOBOUNDARY Does not draw boundary lines.
891// POLYGON_BOUNDARY Draws boundary lines (the default).
892//
893// Construction of the area interior:
894// POLYGON_ALTERNATE Constructs interior in alternate mode
895// (the default).
896// POLYGON_WINDING Constructs interior in winding mode.
897//////////////////////////////////////////////////////////////////////////////
898
899 ULONG flModel = 0L; // Drawing model.
900
901//////////////////////////////////////////////////////////////////////////////
902// Drawing model.
903// POLYGON_INCL Fill is inclusive of bottom right (the default).
904// POLYGON_EXCL Fill is exclusive of bottom right.
905// This is provided to aid migration from other graphics models.
906//////////////////////////////////////////////////////////////////////////////
907
908 LONG lHits = 0L; // Correlation/error indicator.
909 POINTL vPoint;
910 int i;
911 int nIsTRANSPARENT = 0;
912 LONG lBorderColor = 0L;
913 LONG lColor = 0L;
914
915 lBorderColor = m_pen.GetColour().GetPixel();
916 lColor = m_brush.GetColour().GetPixel();
917 if(m_brush.GetStyle() == wxTRANSPARENT)
918 nIsTRANSPARENT = 1;
919
920 vPlgn.ulPoints = n;
921 vPlgn.aPointl = (POINTL*) calloc( n + 1
922 ,sizeof(POINTL)
923 ); // well, new will call malloc
924
925 for(i = 0; i < n; i++)
926 {
927 vPlgn.aPointl[i].x = vPoints[i].x; // +xoffset;
928 vPlgn.aPointl[i].y = OS2Y(vPoints[i].y,0); // +yoffset;
929 }
930 flModel = POLYGON_BOUNDARY;
931 if(nFillStyle == wxWINDING_RULE)
932 flModel |= POLYGON_WINDING;
933 else
934 flModel |= POLYGON_ALTERNATE;
935
936 vPoint.x = vXoffset;
937 vPoint.y = OS2Y(vYoffset,0);
938
939 ::GpiSetColor(m_hPS, lBorderColor);
940 ::GpiMove(m_hPS, &vPoint);
941 lHits = ::GpiPolygons(m_hPS, ulCount, &vPlgn, flOptions, flModel);
942 free(vPlgn.aPointl);
943} // end of wxDC::DoDrawPolygon
944
945void wxDC::DoDrawLines(
946 int n
947, wxPoint vPoints[]
948, wxCoord vXoffset
949, wxCoord vYoffset
950)
951{
952 POINTL vPoint;
953
954 if (vXoffset != 0L || vXoffset != 0L)
955 {
956 int i;
957
958 vPoint.x = vPoints[0].x + vXoffset;
959 vPoint.y = OS2Y(vPoints[0].y + vYoffset,0);
960 ::GpiMove(m_hPS, &vPoint);
961
962 LONG lBorderColor = m_pen.GetColour().GetPixel();
963
964 ::GpiSetColor(m_hPS, lBorderColor);
965 for(i = 1; i < n; i++)
966 {
967 vPoint.x = vPoints[i].x + vXoffset;
968 vPoint.y = OS2Y(vPoints[i].y + vYoffset,0);
969 ::GpiLine(m_hPS, &vPoint);
970 }
971 }
972 else
973 {
974 int i;
975
976 CalcBoundingBox( vPoints[i].x
977 ,vPoints[i].y
978 );
979 vPoint.x = vPoints[0].x;
980 vPoint.y = OS2Y(vPoints[0].y,0);
981 ::GpiMove(m_hPS, &vPoint);
982
983 for (i = 0; i < n; i++)
984 {
985 CalcBoundingBox( vPoints[i].x
986 ,vPoints[i].y
987 );
988 vPoint.x = vPoints[i].x;
989 vPoint.y = OS2Y(vPoints[i].y,0);
990 ::GpiLine(m_hPS, &vPoint);
991 }
992 }
993} // end of wxDC::DoDrawLines
994
995void wxDC::DoDrawRectangle(
996 wxCoord vX
997, wxCoord vY
998, wxCoord vWidth
999, wxCoord vHeight
1000)
1001{
1002 POINTL vPoint[2];
1003 LONG lControl;
1004 LONG lColor;
1005 LONG lBorderColor;
1006 int nIsTRANSPARENT = 0;
1007
1008 //
1009 // Might be a memory DC with no Paint rect.
1010 //
1011 if (!(m_vRclPaint.yTop == 0 &&
1012 m_vRclPaint.yBottom == 0 &&
1013 m_vRclPaint.xRight == 0 &&
1014 m_vRclPaint.xLeft == 0))
1015 vY = OS2Y(vY,vHeight);
1016 else
1017 {
1018 if (m_vSelectedBitmap != wxNullBitmap)
1019 {
1020 m_vRclPaint.yTop = m_vSelectedBitmap.GetHeight();
1021 m_vRclPaint.xRight = m_vSelectedBitmap.GetWidth();
1022 vY = OS2Y(vY,vHeight);
1023 }
1024 }
1025
1026 wxCoord vX2 = vX + vWidth;
1027 wxCoord vY2 = vY + vHeight;
1028
1029 vPoint[0].x = vX;
1030 vPoint[0].y = vY;
1031 vPoint[1].x = vX + vWidth - 1;
1032 vPoint[1].y = vY + vHeight - 1;
1033 ::GpiMove(m_hPS, &vPoint[0]);
1034 lColor = m_brush.GetColour().GetPixel();
1035 lBorderColor = m_pen.GetColour().GetPixel();
1036 if (m_brush.GetStyle() == wxTRANSPARENT)
1037 nIsTRANSPARENT = 1;
1038 if(lColor == lBorderColor || nIsTRANSPARENT)
1039 {
1040 lControl = DRO_OUTLINEFILL; //DRO_FILL;
1041 if(m_brush.GetStyle() == wxTRANSPARENT)
1042 lControl = DRO_OUTLINE;
1043
1044 ::GpiSetColor(m_hPS, lBorderColor);
1045 ::GpiBox( m_hPS // handle to a presentation space
1046 ,lControl // draw the box outline ? or ?
1047 ,&vPoint[1] // address of the corner
1048 ,0L // horizontal corner radius
1049 ,0L // vertical corner radius
1050 );
1051 }
1052 else
1053 {
1054 lControl = DRO_OUTLINE;
1055 ::GpiSetColor( m_hPS
1056 ,lBorderColor
1057 );
1058 ::GpiBox( m_hPS
1059 ,lControl
1060 ,&vPoint[1]
1061 ,0L
1062 ,0L
1063 );
1064 lControl = DRO_FILL;
1065 ::GpiSetColor( m_hPS
1066 ,lColor
1067 );
1068 vPoint[0].x = vX + 1;
1069 vPoint[0].y = vY + 1;
1070 vPoint[1].x = vX + vWidth - 2;
1071 vPoint[1].y = vY + vHeight - 2;
1072 ::GpiMove(m_hPS, &vPoint[0]);
1073 ::GpiBox( m_hPS
1074 ,lControl
1075 ,&vPoint[1]
1076 ,0L
1077 ,0L
1078 );
1079 }
1080 CalcBoundingBox(vX, vY);
1081 CalcBoundingBox(vX2, vY2);
1082} // end of wxDC::DoDrawRectangle
1083
1084void wxDC::DoDrawRoundedRectangle(
1085 wxCoord vX
1086, wxCoord vY
1087, wxCoord vWidth
1088, wxCoord vHeight
1089, double dRadius
1090)
1091{
1092 POINTL vPoint[2];
1093 LONG lControl;
1094 LONG lColor;
1095 LONG lBorderColor;
1096 int nIsTRANSPARENT = 0;
1097
1098 //
1099 // Might be a memory DC with no Paint rect.
1100 //
1101 if (!(m_vRclPaint.yTop == 0 &&
1102 m_vRclPaint.yBottom == 0 &&
1103 m_vRclPaint.xRight == 0 &&
1104 m_vRclPaint.xLeft == 0))
1105 vY = OS2Y(vY,vHeight);
1106 else
1107 {
1108 if (m_vSelectedBitmap != wxNullBitmap)
1109 {
1110 m_vRclPaint.yTop = m_vSelectedBitmap.GetHeight();
1111 m_vRclPaint.xRight = m_vSelectedBitmap.GetWidth();
1112 vY = OS2Y(vY,vHeight);
1113 }
1114 }
1115
1116 wxCoord vX2 = (vX + vWidth);
1117 wxCoord vY2 = (vY + vHeight);
1118
1119 vPoint[0].x = vX;
1120 vPoint[0].y = vY;
1121 vPoint[1].x = vX + vWidth - 1;
1122 vPoint[1].y = vY + vHeight - 1;
1123 ::GpiMove(m_hPS, &vPoint[0]);
1124
1125 lColor = m_brush.GetColour().GetPixel();
1126 lBorderColor = m_pen.GetColour().GetPixel();
1127 lControl = DRO_OUTLINEFILL; //DRO_FILL;
1128 if (m_brush.GetStyle() == wxTRANSPARENT)
1129 nIsTRANSPARENT = 1;
1130 if(lColor == lBorderColor || nIsTRANSPARENT)
1131 {
1132 lControl = DRO_OUTLINEFILL; //DRO_FILL;
1133 if(m_brush.GetStyle() == wxTRANSPARENT)
1134 lControl = DRO_OUTLINE;
1135
1136 ::GpiSetColor(m_hPS, lColor);
1137 ::GpiBox( m_hPS // handle to a presentation space
1138 ,lControl // draw the box outline ? or ?
1139 ,&vPoint[1] // address of the corner
1140 ,(LONG)dRadius // horizontal corner radius
1141 ,(LONG)dRadius // vertical corner radius
1142 );
1143 }
1144 else
1145 {
1146 lControl = DRO_OUTLINE;
1147 ::GpiSetColor( m_hPS
1148 ,lBorderColor
1149 );
1150 ::GpiBox( m_hPS
1151 ,lControl
1152 ,&vPoint[1]
1153 ,(LONG)dRadius
1154 ,(LONG)dRadius
1155 );
1156 lControl = DRO_FILL;
1157 ::GpiSetColor( m_hPS
1158 ,lColor
1159 );
1160 vPoint[0].x = vX + 1;
1161 vPoint[0].y = vY + 1;
1162 vPoint[1].x = vX + vWidth - 2;
1163 vPoint[1].y = vY + vHeight - 2;
1164 ::GpiMove(m_hPS, &vPoint[0]);
1165 ::GpiBox( m_hPS
1166 ,lControl
1167 ,&vPoint[1]
1168 ,(LONG)dRadius
1169 ,(LONG)dRadius
1170 );
1171 }
1172
1173 CalcBoundingBox(vX, vY);
1174 CalcBoundingBox(vX2, vY2);
1175} // end of wxDC::DoDrawRoundedRectangle
1176
1177// Draw Ellipse within box (x,y) - (x+width, y+height)
1178void wxDC::DoDrawEllipse(
1179 wxCoord vX
1180, wxCoord vY
1181, wxCoord vWidth
1182, wxCoord vHeight
1183)
1184{
1185 POINTL vPtlPos; // Structure for current position
1186 FIXED vFxMult; // Multiplier for ellipse
1187 ARCPARAMS vArcp; // Structure for arc parameters
1188
1189 vY = OS2Y(vY,vHeight);
1190
1191 vArcp.lR = 0;
1192 vArcp.lQ = vHeight/2;
1193 vArcp.lP = vWidth/2;
1194 vArcp.lS = 0;
1195 ::GpiSetArcParams( m_hPS
1196 ,&vArcp
1197 ); // Sets parameters to default
1198 vPtlPos.x = vX + vWidth/2; // Loads x-coordinate
1199 vPtlPos.y = vY + vHeight/2; // Loads y-coordinate
1200 ::GpiMove( m_hPS
1201 ,&vPtlPos
1202 ); // Sets current position
1203 vFxMult = MAKEFIXED(1, 0); /* Sets multiplier */
1204
1205 //
1206 // DRO_FILL, DRO_OTLINEFILL - where to get
1207 //
1208 ::GpiFullArc( m_hPS
1209 ,DRO_OUTLINE
1210 ,vFxMult
1211 ); // Draws full arc with center at current position
1212
1213 wxCoord vX2 = (vX + vWidth);
1214 wxCoord vY2 = (vY + vHeight);
1215
1216 CalcBoundingBox(vX, vY);
1217 CalcBoundingBox(vX2, vY2);
1218} // end of wxDC::DoDrawEllipse
1219
1220void wxDC::DoDrawEllipticArc(
1221 wxCoord vX
1222, wxCoord vY
1223, wxCoord vWidth
1224, wxCoord vHeight
1225, double dSa
1226, double dEa
1227)
1228{
1229 POINTL vPtlPos; // Structure for current position
1230 FIXED vFxMult; // Multiplier for ellipse
1231 ARCPARAMS vArcp; // Structure for arc parameters
1232 FIXED vFSa;
1233 FIXED vFSweepa; // Start angle, sweep angle
1234 double dIntPart;
1235 double dFractPart;
1236 double dRadius;
1237
1238 vY = OS2Y(vY,vHeight);
1239
1240 dFractPart = modf(dSa,&dIntPart);
1241 vFSa = MAKEFIXED((int)dIntPart, (int)(dFractPart * 0xffff) );
1242 dFractPart = modf(dEa - dSa, &dIntPart);
1243 vFSweepa = MAKEFIXED((int)dIntPart, (int)(dFractPart * 0xffff) );
1244
1245 //
1246 // Ellipse main axis (r,q), (p,s) with center at (0,0)
1247 //
1248 vArcp.lR = 0;
1249 vArcp.lQ = vHeight/2;
1250 vArcp.lP = vWidth/2;
1251 vArcp.lS = 0;
1252 ::GpiSetArcParams(m_hPS, &vArcp); // Sets parameters to default
1253 vPtlPos.x = vX + vWidth/2 * (1. + cos(DegToRad(dSa))); // Loads x-coordinate
1254 vPtlPos.y = vY + vHeight/2 * (1. + sin(DegToRad(dSa))); // Loads y-coordinate
1255 ::GpiMove(m_hPS, &vPtlPos); // Sets current position
1256
1257 //
1258 // May be not to the center ?
1259 //
1260 vPtlPos.x = vX + vWidth/2 ; // Loads x-coordinate
1261 vPtlPos.y = vY + vHeight/2; // Loads y-coordinate
1262 vFxMult = MAKEFIXED(1, 0); // Sets multiplier
1263
1264 //
1265 // DRO_FILL, DRO_OTLINEFILL - where to get
1266 //
1267 ::GpiPartialArc( m_hPS
1268 ,&vPtlPos
1269 ,vFxMult
1270 ,vFSa
1271 ,vFSweepa
1272 );
1273 wxCoord vX2 = (vX + vWidth);
1274 wxCoord vY2 = (vY + vHeight);
1275
1276 CalcBoundingBox(vX, vY);
1277 CalcBoundingBox(vX2, vY2);
1278} // end of wxDC::DoDrawEllipticArc
1279
1280void wxDC::DoDrawIcon(
1281 const wxIcon& rIcon
1282, wxCoord vX
1283, wxCoord vY
1284)
1285{
1286 //
1287 // Need to copy back into a bitmap. ::WinDrawPointer uses device coords
1288 // and I don't feel like figuring those out for scrollable windows so
1289 // just convert to a bitmap then let the DoDrawBitmap routing display it
1290 //
1291 if (rIcon.IsXpm())
1292 {
1293 DoDrawBitmap(rIcon.GetXpmSrc(), vX, vY, TRUE);
1294 }
1295 else
1296 {
1297 wxBitmap vBitmap(rIcon);
1298
1299 DoDrawBitmap(vBitmap, vX, vY, FALSE);
1300 }
1301 CalcBoundingBox(vX, vY);
1302 CalcBoundingBox(vX + rIcon.GetWidth(), vY + rIcon.GetHeight());
1303} // end of wxDC::DoDrawIcon
1304
1305void wxDC::DoDrawBitmap(
1306 const wxBitmap& rBmp
1307, wxCoord vX
1308, wxCoord vY
1309, bool bUseMask
1310)
1311{
1312 if (!IsKindOf(CLASSINFO(wxPrinterDC)))
1313 {
1314 HBITMAP hBitmap = (HBITMAP)rBmp.GetHBITMAP();
1315 HBITMAP hBitmapOld;
1316 POINTL vPoint[4];
1317
1318 vY = OS2Y(vY,rBmp.GetHeight());
1319
1320 vPoint[0].x = vX;
1321 vPoint[0].y = vY + rBmp.GetHeight();
1322 vPoint[1].x = vX + rBmp.GetWidth();
1323 vPoint[1].y = vY;
1324 vPoint[2].x = 0;
1325 vPoint[2].y = 0;
1326 vPoint[3].x = rBmp.GetWidth();
1327 vPoint[3].y = rBmp.GetHeight();
1328 if (bUseMask)
1329 {
1330 wxMask* pMask = rBmp.GetMask();
1331
1332 if (pMask)
1333 {
1334 //
1335 // Need to imitate ::MaskBlt in windows.
1336 // 1) Extract the bits from from the bitmap.
1337 // 2) Extract the bits from the mask
1338 // 3) Using the mask bits do the following:
1339 // A) If the mask byte is 00 leave the bitmap byte alone
1340 // B) If the mask byte is FF copy the screen color into
1341 // bitmap byte
1342 // 4) Create a new bitmap and set its bits to the above result
1343 // 5) Blit this to the screen PS
1344 //
1345 HBITMAP hMask = (HBITMAP)pMask->GetMaskBitmap();
1346 HBITMAP hOldMask = NULLHANDLE;
1347 HBITMAP hOldBitmap = NULLHANDLE;
1348 HBITMAP hNewBitmap = NULLHANDLE;
1349 unsigned char* pucBits; // buffer that will contain the bitmap data
1350 unsigned char* pucBitsMask; // buffer that will contain the mask data
1351 unsigned char* pucData; // pointer to use to traverse bitmap data
1352 unsigned char* pucDataMask; // pointer to use to traverse mask data
1353 LONG lHits;
1354 ERRORID vError;
1355 wxString sError;
1356
1357 //
1358 // The usual Memory context creation stuff
1359 //
1360 DEVOPENSTRUC vDop = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
1361 SIZEL vSize = {0, 0};
1362 HDC hDC = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1363 HPS hPS = ::GpiCreatePS(vHabmain, hDC, &vSize, PU_PELS | GPIA_ASSOC);
1364
1365 //
1366 // The usual bitmap header stuff
1367 //
1368 BITMAPINFOHEADER2 vHeader;
1369 BITMAPINFO2 vInfo;
1370
1371 memset(&vHeader, '\0', 16);
1372 vHeader.cbFix = 16;
1373
1374 memset(&vInfo, '\0', 16);
1375 vInfo.cbFix = 16;
1376 vInfo.cx = (ULONG)rBmp.GetWidth();
1377 vInfo.cy = (ULONG)rBmp.GetHeight();
1378 vInfo.cPlanes = 1;
1379 vInfo.cBitCount = 24; // Set to desired count going in
1380
1381 //
1382 // Create the buffers for data....all wxBitmaps are 24 bit internally
1383 //
1384 int nBytesPerLine = rBmp.GetWidth() * 3;
1385 int nSizeDWORD = sizeof(DWORD);
1386 int nLineBoundary = nBytesPerLine % nSizeDWORD;
1387 int nPadding = 0;
1388 int i;
1389 int j;
1390 LONG lScans = 0L;
1391 LONG lColor = 0L;
1392
1393 //
1394 // Need to get a background color for mask blitting
1395 //
1396 if (IsKindOf(CLASSINFO(wxWindowDC)))
1397 {
1398 wxWindowDC* pWindowDC = wxDynamicCast(this, wxWindowDC);
1399
1400 lColor = pWindowDC->m_pCanvas->GetBackgroundColour().GetPixel();
1401 }
1402 else if (GetBrush() != wxNullBrush)
1403 lColor = GetBrush().GetColour().GetPixel();
1404 else
1405 lColor = m_textBackgroundColour.GetPixel();
1406
1407 //
1408 // Bitmap must be ina double-word alligned address so we may
1409 // have some padding to worry about
1410 //
1411 if (nLineBoundary > 0)
1412 {
1413 nPadding = nSizeDWORD - nLineBoundary;
1414 nBytesPerLine += nPadding;
1415 }
1416 pucBits = (unsigned char *)malloc(nBytesPerLine * rBmp.GetHeight());
1417 pucBitsMask = (unsigned char *)malloc(nBytesPerLine * rBmp.GetHeight());
1418 memset(pucBits, '\0', (nBytesPerLine * rBmp.GetHeight()));
1419 memset(pucBitsMask, '\0', (nBytesPerLine * rBmp.GetHeight()));
1420
1421 //
1422 // Extract the bitmap and mask data
1423 //
1424 if ((hOldBitmap = ::GpiSetBitmap(hPS, hBitmap)) == HBM_ERROR)
1425 {
1426 vError = ::WinGetLastError(vHabmain);
1427 sError = wxPMErrorToStr(vError);
1428 }
1429 ::GpiQueryBitmapInfoHeader(hBitmap, &vHeader);
1430 vInfo.cBitCount = 24;
1431 if ((lScans = ::GpiQueryBitmapBits( hPS
1432 ,0L
1433 ,(LONG)rBmp.GetHeight()
1434 ,(PBYTE)pucBits
1435 ,&vInfo
1436 )) == GPI_ALTERROR)
1437 {
1438 vError = ::WinGetLastError(vHabmain);
1439 sError = wxPMErrorToStr(vError);
1440 }
1441 if ((hOldMask = ::GpiSetBitmap(hPS, hMask)) == HBM_ERROR)
1442 {
1443 vError = ::WinGetLastError(vHabmain);
1444 sError = wxPMErrorToStr(vError);
1445 }
1446 ::GpiQueryBitmapInfoHeader(hMask, &vHeader);
1447 vInfo.cBitCount = 24;
1448 if ((lScans = ::GpiQueryBitmapBits( hPS
1449 ,0L
1450 ,(LONG)rBmp.GetHeight()
1451 ,(PBYTE)pucBitsMask
1452 ,&vInfo
1453 )) == GPI_ALTERROR)
1454 {
1455 vError = ::WinGetLastError(vHabmain);
1456 sError = wxPMErrorToStr(vError);
1457 }
1458 if (( hMask = ::GpiSetBitmap(hPS, hOldMask)) == HBM_ERROR)
1459 {
1460 vError = ::WinGetLastError(vHabmain);
1461 sError = wxPMErrorToStr(vError);
1462 }
1463
1464 //
1465 // Now set the bytes(bits) according to the mask values
1466 // 3 bytes per pel...must handle one at a time
1467 //
1468 pucData = pucBits;
1469 pucDataMask = pucBitsMask;
1470
1471 //
1472 // 16 bit kludge really only kinda works. The mask gets applied
1473 // where needed but the original bitmap bits are dorked sometimes
1474 //
1475 bool bpp16 = (wxDisplayDepth() == 16);
1476
1477 for (i = 0; i < rBmp.GetHeight(); i++)
1478 {
1479 for (j = 0; j < rBmp.GetWidth(); j++)
1480 {
1481 // Byte 1
1482 if (bpp16 && *pucDataMask == 0xF8) // 16 bit display gobblygook
1483 pucData++;
1484 else if (*pucDataMask == 0xFF) // leave bitmap byte alone
1485 pucData++;
1486 else
1487 {
1488 *pucData = ((unsigned char)(lColor >> 16));
1489 pucData++;
1490 }
1491 // Byte 2
1492 if (bpp16 && *(pucDataMask + 1) == 0xFC) // 16 bit display gobblygook
1493 pucData++;
1494 else if (*(pucDataMask + 1) == 0xFF) // leave bitmap byte alone
1495 pucData++;
1496 else
1497 {
1498 *pucData = ((unsigned char)(lColor >> 8));
1499 pucData++;
1500 }
1501
1502 // Byte 3
1503 if (bpp16 && *(pucDataMask + 2) == 0xF8) // 16 bit display gobblygook
1504 pucData++;
1505 else if (*(pucDataMask + 2) == 0xFF) // leave bitmap byte alone
1506 pucData++;
1507 else
1508 {
1509 *pucData = ((unsigned char)lColor);
1510 pucData++;
1511 }
1512 pucDataMask += 3;
1513 }
1514 for (j = 0; j < nPadding; j++)
1515 {
1516 pucData++;
1517 pucDataMask++;
1518 }
1519 }
1520 //
1521 // Create a new bitmap
1522 //
1523 vHeader.cx = (ULONG)rBmp.GetWidth();
1524 vHeader.cy = (ULONG)rBmp.GetHeight();
1525 vHeader.cPlanes = 1L;
1526 vHeader.cBitCount = 24;
1527 if ((hNewBitmap = ::GpiCreateBitmap( hPS
1528 ,&vHeader
1529 ,CBM_INIT
1530 ,(PBYTE)pucBits
1531 ,&vInfo
1532 )) == GPI_ERROR)
1533 {
1534 vError = ::WinGetLastError(vHabmain);
1535 sError = wxPMErrorToStr(vError);
1536 }
1537
1538 //
1539 // Now blit it to the screen PS
1540 //
1541 if ((lHits = ::GpiWCBitBlt( (HPS)GetHPS()
1542 ,hNewBitmap
1543 ,4
1544 ,vPoint
1545 ,ROP_SRCCOPY
1546 ,BBO_IGNORE
1547 )) == GPI_ERROR)
1548 {
1549 vError = ::WinGetLastError(vHabmain);
1550 sError = wxPMErrorToStr(vError);
1551 }
1552
1553 //
1554 // Clean up
1555 //
1556 free(pucBits);
1557 free(pucBitsMask);
1558 ::GpiSetBitmap(hPS, NULLHANDLE);
1559 ::GpiDeleteBitmap(hNewBitmap);
1560 ::GpiDestroyPS(hPS);
1561 ::DevCloseDC(hDC);
1562 }
1563 }
1564 else
1565 {
1566 LONG lOldForeGround = ::GpiQueryColor((HPS)GetHPS());
1567 LONG lOldBackGround = ::GpiQueryBackColor((HPS)GetHPS());
1568
1569 if (m_textForegroundColour.Ok())
1570 {
1571 ::GpiSetColor( (HPS)GetHPS()
1572 ,m_textForegroundColour.GetPixel()
1573 );
1574 }
1575 if (m_textBackgroundColour.Ok())
1576 {
1577 ::GpiSetBackColor( (HPS)GetHPS()
1578 ,m_textBackgroundColour.GetPixel()
1579 );
1580 }
1581 //
1582 // Need to alter bits in a mono bitmap to match the new
1583 // background-foreground if it is different.
1584 //
1585 if (rBmp.IsMono() &&
1586 ((m_textForegroundColour.GetPixel() != lOldForeGround) ||
1587 (m_textBackgroundColour.GetPixel() != lOldBackGround)))
1588 {
1589 DEVOPENSTRUC vDop = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
1590 SIZEL vSize = {0, 0};
1591 HDC hDC = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1592 HPS hPS = ::GpiCreatePS(vHabmain, hDC, &vSize, PU_PELS | GPIA_ASSOC);
1593
1594 int nBytesPerLine = rBmp.GetWidth() * 3;
1595 int i, j;
1596 LONG lForeGround = m_textForegroundColour.GetPixel();
1597 LONG lBackGround = m_textBackgroundColour.GetPixel();
1598 LONG lScans;
1599 HBITMAP hOldBitmap = NULLHANDLE;
1600 BITMAPINFO2 vInfo;
1601 ERRORID vError;
1602 wxString sError;
1603
1604
1605 memset(&vInfo, '\0', 16);
1606 vInfo.cbFix = 16;
1607 vInfo.cx = (ULONG)rBmp.GetWidth();
1608 vInfo.cy = (ULONG)rBmp.GetHeight();
1609 vInfo.cPlanes = 1;
1610 vInfo.cBitCount = 24;
1611
1612 unsigned char* pucBits; // buffer that will contain the bitmap data
1613 unsigned char* pucData; // pointer to use to traverse bitmap data
1614
1615 pucBits = new unsigned char[nBytesPerLine * rBmp.GetHeight()];
1616 memset(pucBits, '\0', (nBytesPerLine * rBmp.GetHeight()));
1617
1618 if ((hOldBitmap = ::GpiSetBitmap(hPS, hBitmap)) == HBM_ERROR)
1619 {
1620 vError = ::WinGetLastError(vHabmain);
1621 sError = wxPMErrorToStr(vError);
1622 return;
1623 }
1624 if ((lScans = ::GpiQueryBitmapBits( hPS
1625 ,0L
1626 ,(LONG)rBmp.GetHeight()
1627 ,(PBYTE)pucBits
1628 ,&vInfo
1629 )) == GPI_ALTERROR)
1630 {
1631 vError = ::WinGetLastError(vHabmain);
1632 sError = wxPMErrorToStr(vError);
1633 return;
1634 }
1635 unsigned char cOldRedFore = (unsigned char)(lOldForeGround >> 16);
1636 unsigned char cOldGreenFore = (unsigned char)(lOldForeGround >> 8);
1637 unsigned char cOldBlueFore = (unsigned char)lOldForeGround;
1638
1639 unsigned char cOldRedBack = (unsigned char)(lOldBackGround >> 16);
1640 unsigned char cOldGreenBack = (unsigned char)(lOldBackGround >> 8);
1641 unsigned char cOldBlueBack = (unsigned char)lOldBackGround;
1642
1643 unsigned char cRedFore = (unsigned char)(lForeGround >> 16);
1644 unsigned char cGreenFore = (unsigned char)(lForeGround >> 8);
1645 unsigned char cBlueFore = (unsigned char)lForeGround;
1646
1647 unsigned char cRedBack = (unsigned char)(lBackGround >> 16);
1648 unsigned char cGreenBack = (unsigned char)(lBackGround >> 8);
1649 unsigned char cBlueBack = (unsigned char)lBackGround;
1650
1651 pucData = pucBits;
1652 for (i = 0; i < rBmp.GetHeight(); i++)
1653 {
1654 for (j = 0; j < rBmp.GetWidth(); j++)
1655 {
1656 unsigned char cBmpRed = *pucData;
1657 unsigned char cBmpGreen = *(pucData + 1);
1658 unsigned char cBmpBlue = *(pucData + 2);
1659
1660 if ((cBmpRed == cOldRedFore) &&
1661 (cBmpGreen == cOldGreenFore) &&
1662 (cBmpBlue == cOldBlueFore))
1663 {
1664 *pucData = cBlueFore;
1665 pucData++;
1666 *pucData = cGreenFore;
1667 pucData++;
1668 *pucData = cRedFore;
1669 pucData++;
1670 }
1671 else
1672 {
1673 *pucData = cBlueBack;
1674 pucData++;
1675 *pucData = cGreenBack;
1676 pucData++;
1677 *pucData = cRedBack;
1678 pucData++;
1679 }
1680 }
1681 }
1682 if ((lScans = ::GpiSetBitmapBits( hPS
1683 ,0L
1684 ,(LONG)rBmp.GetHeight()
1685 ,(PBYTE)pucBits
1686 ,&vInfo
1687 )) == GPI_ALTERROR)
1688 {
1689 vError = ::WinGetLastError(vHabmain);
1690 sError = wxPMErrorToStr(vError);
1691 return;
1692 }
1693 delete [] pucBits;
1694 ::GpiSetBitmap(hPS, NULLHANDLE);
1695 ::GpiDestroyPS(hPS);
1696 ::DevCloseDC(hDC);
1697 }
1698 ::GpiWCBitBlt( (HPS)GetHPS()
1699 ,hBitmap
1700 ,4
1701 ,vPoint
1702 ,ROP_SRCCOPY
1703 ,BBO_IGNORE
1704 );
1705 ::GpiSetBitmap((HPS)GetHPS(), hBitmapOld);
1706 ::GpiSetColor((HPS)GetHPS(), lOldForeGround);
1707 ::GpiSetBackColor((HPS)GetHPS(), lOldBackGround);
1708 }
1709 }
1710} // end of wxDC::DoDrawBitmap
1711
1712void wxDC::DoDrawText(
1713 const wxString& rsText
1714, wxCoord vX
1715, wxCoord vY
1716)
1717{
1718 wxCoord vWidth;
1719 wxCoord vHeight;
1720
1721 DrawAnyText( rsText
1722 ,vX
1723 ,vY
1724 );
1725
1726 CalcBoundingBox(vX, vY);
1727 GetTextExtent(rsText, &vWidth, &vHeight);
1728 CalcBoundingBox((vX + vWidth), (vY + vHeight));
1729} // end of wxDC::DoDrawText
1730
1731void wxDC::DrawAnyText(
1732 const wxString& rsText
1733, wxCoord vX
1734, wxCoord vY
1735)
1736{
1737 int nOldBackground = 0;
1738 POINTL vPtlStart;
1739 LONG lHits;
1740 wxCoord vTextX = 0;
1741 wxCoord vTextY = 0;
1742
1743 //
1744 // prepare for drawing the text
1745 //
1746
1747 //
1748 // Set text color attributes
1749 //
1750 if (m_textForegroundColour.Ok())
1751 {
1752 SetTextColor( m_hPS
1753 ,(int)m_textForegroundColour.GetPixel()
1754 );
1755 }
1756
1757 if (m_textBackgroundColour.Ok())
1758 {
1759 nOldBackground = SetTextBkColor( m_hPS
1760 ,(int)m_textBackgroundColour.GetPixel()
1761 );
1762 }
1763 SetBkMode( m_hPS
1764 ,m_backgroundMode
1765 );
1766 GetTextExtent( rsText
1767 ,&vTextX
1768 ,&vTextY
1769 );
1770 vPtlStart.x = vX;
1771 if (!(m_vRclPaint.yTop == 0 &&
1772 m_vRclPaint.yBottom == 0 &&
1773 m_vRclPaint.xRight == 0 &&
1774 m_vRclPaint.xLeft == 0))
1775 {
1776 //
1777 // Position Text a little differently in the Statusbar from other panels
1778 //
1779 if (m_pCanvas && m_pCanvas->IsKindOf(CLASSINFO(wxStatusBar)))
1780 vPtlStart.y = OS2Y(vY,vTextY);
1781 else
1782 vPtlStart.y = OS2Y(vY,vTextY/1.5); // Full extent is a bit much
1783 }
1784 else
1785 {
1786 if (m_vSelectedBitmap != wxNullBitmap)
1787 {
1788 m_vRclPaint.yTop = m_vSelectedBitmap.GetHeight();
1789 m_vRclPaint.xRight = m_vSelectedBitmap.GetWidth();
1790 if (m_pCanvas && m_pCanvas->IsKindOf(CLASSINFO(wxStatusBar)))
1791 vPtlStart.y = OS2Y(vY,vTextY);
1792 else
1793 vPtlStart.y = OS2Y(vY,vTextY/1.5);
1794 }
1795 else
1796 vPtlStart.y = vY;
1797 }
1798
1799 PCH pzStr = (PCH)rsText.c_str();
1800
1801 ::GpiMove(m_hPS, &vPtlStart);
1802 lHits = ::GpiCharString( m_hPS
1803 ,rsText.length()
1804 ,pzStr
1805 );
1806 if (lHits != GPI_OK)
1807 {
1808 wxLogLastError(wxT("TextOut"));
1809 }
1810
1811 //
1812 // Restore the old parameters (text foreground colour may be left because
1813 // it never is set to anything else, but background should remain
1814 // transparent even if we just drew an opaque string)
1815 //
1816 if (m_textBackgroundColour.Ok())
1817 SetTextBkColor( m_hPS
1818 ,nOldBackground
1819 );
1820 SetBkMode( m_hPS
1821 ,wxTRANSPARENT
1822 );
1823}
1824
1825void wxDC::DoDrawRotatedText(
1826 const wxString& rsText
1827, wxCoord vX
1828, wxCoord vY
1829, double dAngle
1830)
1831{
1832 if (dAngle == 0.0)
1833 {
1834 DoDrawText( rsText
1835 ,vX
1836 ,vY
1837 );
1838 }
1839
1840 // TODO:
1841 /*
1842 if ( angle == 0.0 )
1843 {
1844 DoDrawText(text, x, y);
1845 }
1846 else
1847 {
1848 LOGFONT lf;
1849 wxFillLogFont(&lf, &m_font);
1850
1851 // GDI wants the angle in tenth of degree
1852 long angle10 = (long)(angle * 10);
1853 lf.lfEscapement = angle10;
1854 lf. lfOrientation = angle10;
1855
1856 HFONT hfont = ::CreateFontIndirect(&lf);
1857 if ( !hfont )
1858 {
1859 wxLogLastError("CreateFont");
1860 }
1861 else
1862 {
1863 HFONT hfontOld = ::SelectObject(GetHdc(), hfont);
1864
1865 DrawAnyText(text, x, y);
1866
1867 (void)::SelectObject(GetHdc(), hfontOld);
1868 }
1869
1870 // call the bounding box by adding all four vertices of the rectangle
1871 // containing the text to it (simpler and probably not slower than
1872 // determining which of them is really topmost/leftmost/...)
1873 wxCoord w, h;
1874 GetTextExtent(text, &w, &h);
1875
1876 double rad = DegToRad(angle);
1877
1878 // "upper left" and "upper right"
1879 CalcBoundingBox(x, y);
1880 CalcBoundingBox(x + w*cos(rad), y - h*sin(rad));
1881 CalcBoundingBox(x + h*sin(rad), y + h*cos(rad));
1882
1883 // "bottom left" and "bottom right"
1884 x += (wxCoord)(h*sin(rad));
1885 y += (wxCoord)(h*cos(rad));
1886 CalcBoundingBox(x, y);
1887 CalcBoundingBox(x + h*sin(rad), y + h*cos(rad));
1888 }
1889*/
1890}
1891
1892// ---------------------------------------------------------------------------
1893// set GDI objects
1894// ---------------------------------------------------------------------------
1895
1896void wxDC::DoSelectPalette(
1897 bool bRealize
1898)
1899{
1900 //
1901 // Set the old object temporarily, in case the assignment deletes an object
1902 // that's not yet selected out.
1903 //
1904 if (m_hOldPalette)
1905 {
1906 m_hOldPalette = 0;
1907 }
1908
1909 if (m_palette.Ok())
1910 {
1911 HPALETTE hOldPal;
1912
1913 hOldPal = ::GpiSelectPalette((HDC) m_hPS, (HPALETTE) m_palette.GetHPALETTE());
1914 if (!m_hOldPalette)
1915 m_hOldPalette = (WXHPALETTE)hOldPal;
1916 }
1917} // end of wxDC::DoSelectPalette
1918
1919void wxDC::InitializePalette()
1920{
1921 if (wxDisplayDepth() <= 8 )
1922 {
1923 //
1924 // Look for any window or parent that has a custom palette. If any has
1925 // one then we need to use it in drawing operations
1926 //
1927 wxWindow* pWin = m_pCanvas->GetAncestorWithCustomPalette();
1928
1929 m_hasCustomPalette = pWin && pWin->HasCustomPalette();
1930 if (m_hasCustomPalette)
1931 {
1932 m_palette = pWin->GetPalette();
1933
1934 //
1935 // turn on PM translation for this palette
1936 //
1937 DoSelectPalette();
1938 }
1939 }
1940} // end of wxDC::InitializePalette
1941
1942void wxDC::SetPalette(
1943 const wxPalette& rPalette
1944)
1945{
1946 if (m_hOldFont)
1947 {
1948 m_hOldFont = 0;
1949 }
1950 m_palette = rPalette;
1951 if (!rPalette.Ok())
1952 {
1953 if (m_hOldFont)
1954 {
1955 m_hOldFont = 0;
1956 }
1957 }
1958 HPALETTE hOldPal = ::GpiSelectPalette((HDC) m_hPS, (HPALETTE) m_palette.GetHPALETTE());
1959 if (!m_hOldPalette)
1960 m_hOldPalette = (WXHPALETTE)hOldPal;
1961} // end of wxDC::SetPalette
1962
1963void wxDC::SetFont(
1964 const wxFont& rFont
1965)
1966{
1967 //
1968 // Set the old object temporarily, in case the assignment deletes an object
1969 // that's not yet selected out.
1970 //
1971 if (m_hOldFont)
1972 {
1973 m_hOldFont = 0;
1974 }
1975 m_font = rFont;
1976 if (!rFont.Ok())
1977 {
1978 m_hOldFont = 0;
1979 }
1980
1981 m_font.SetPS(m_hPS); // this will realize the font
1982
1983 if (m_font.Ok())
1984 {
1985 HFONT hFont = m_font.GetResourceHandle();
1986 if (hFont == (HFONT) NULL)
1987 {
1988 wxLogDebug(wxT("::SelectObject failed in wxDC::SetFont."));
1989 }
1990 if (!m_hOldFont)
1991 m_hOldFont = (WXHFONT) hFont;
1992 }
1993} // end of wxDC::SetFont
1994
1995void wxDC::SetPen(
1996 const wxPen& rPen
1997)
1998{
1999 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2000
2001 if (m_pen == rPen)
2002 return;
2003 m_pen = rPen;
2004 if (!m_pen.Ok())
2005 return;
2006
2007 if (m_hOldPen)
2008 m_hOldPen = 0L;
2009 m_pen = rPen;
2010
2011 if (!m_pen.Ok())
2012 {
2013 if (m_hOldPen)
2014 {
2015 m_pen.SetPS((HPS)m_hOldPen);
2016 }
2017 m_hOldPen = 0L;
2018 }
2019
2020 if (m_pen.Ok())
2021 {
2022 if (m_pen.GetResourceHandle())
2023 {
2024 m_pen.SetPS(m_hPS);
2025 if (!m_hOldPen)
2026 m_hOldPen = m_pen.GetPS();
2027 }
2028 ::GpiSetColor(m_hPS, m_pen.GetColour().GetPixel());
2029 }
2030}
2031
2032void wxDC::SetBrush(
2033 const wxBrush& rBrush
2034)
2035{
2036 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2037
2038 if (m_hOldBrush)
2039 m_hOldBrush = 0L;
2040 m_brush = rBrush;
2041 if (!m_brush.Ok())
2042 if (m_brush == rBrush)
2043 return;
2044 if (!m_brush.Ok())
2045 if (m_hOldBrush)
2046 m_hOldBrush = 0L;
2047
2048 if (!m_brush.Ok())
2049 {
2050 if (m_hOldBrush)
2051 {
2052 m_brush.SetPS((HPS)m_hOldBrush);
2053 }
2054 m_hOldBrush = 0L;
2055 }
2056
2057 if (m_brush.Ok())
2058 {
2059 if (m_brush.GetResourceHandle())
2060 {
2061 m_brush.SetPS(m_hPS);
2062 if (!m_hOldBrush)
2063 m_hOldBrush = (WXHWND)m_brush.GetPS();
2064 }
2065 }
2066} // end of wxDC::SetBrush
2067
2068void wxDC::SetBackground(
2069 const wxBrush& rBrush
2070)
2071{
2072 m_backgroundBrush = rBrush;
2073 if (!m_backgroundBrush.Ok())
2074 return;
2075 if (m_pCanvas)
2076 {
2077 bool bCustomColours = TRUE;
2078
2079 //
2080 // If we haven't specified wxUSER_COLOURS, don't allow the panel/dialog box to
2081 // change background colours from the control-panel specified colours.
2082 //
2083 if (m_pCanvas->IsKindOf(CLASSINFO(wxWindow)) &&
2084 ((m_pCanvas->GetWindowStyleFlag() & wxUSER_COLOURS) != wxUSER_COLOURS))
2085 bCustomColours = FALSE;
2086 if (bCustomColours)
2087 {
2088 if (m_backgroundBrush.GetStyle()==wxTRANSPARENT)
2089 {
2090 m_pCanvas->SetTransparent(TRUE);
2091 }
2092 else
2093 {
2094 //
2095 // Setting the background brush of a DC
2096 // doesn't affect the window background colour. However,
2097 // I'm leaving in the transparency setting because it's needed by
2098 // various controls (e.g. wxStaticText) to determine whether to draw
2099 // transparently or not. TODO: maybe this should be a new function
2100 // wxWindow::SetTransparency(). Should that apply to the child itself, or the
2101 // parent?
2102 // m_canvas->SetBackgroundColour(m_backgroundBrush.GetColour());
2103 //
2104 m_pCanvas->SetTransparent(FALSE);
2105 }
2106 }
2107 }
2108 COLORREF vNewColor = m_backgroundBrush.GetColour().GetPixel();
2109 (void)::GpiSetBackColor((HPS)m_hPS, (LONG)vNewColor);
2110} // end of wxDC::SetBackground
2111
2112void wxDC::SetBackgroundMode(
2113 int nMode
2114)
2115{
2116 m_backgroundMode = nMode;
2117} // end of wxDC::SetBackgroundMode
2118
2119void wxDC::SetLogicalFunction(
2120 int nFunction
2121)
2122{
2123 m_logicalFunction = nFunction;
2124 SetRop((WXHDC)m_hDC);
2125} // wxDC::SetLogicalFunction
2126
2127void wxDC::SetRop(
2128 WXHDC hDC
2129)
2130{
2131 if (!hDC || m_logicalFunction < 0)
2132 return;
2133
2134 LONG lCRop;
2135 switch (m_logicalFunction)
2136 {
2137 case wxXOR:
2138 lCRop = FM_XOR;
2139 break;
2140
2141 case wxINVERT:
2142 lCRop = FM_INVERT;
2143 break;
2144
2145 case wxOR_REVERSE:
2146 lCRop = FM_MERGESRCNOT;
2147 break;
2148
2149 case wxAND_REVERSE:
2150 lCRop = FM_NOTMASKSRC;
2151 break;
2152
2153 case wxCLEAR:
2154 lCRop = FM_ONE;
2155 break;
2156
2157 case wxSET:
2158 lCRop = FM_ZERO;
2159 break;
2160
2161 case wxSRC_INVERT:
2162 lCRop = FM_MERGENOTSRC;
2163 break;
2164
2165 case wxOR_INVERT:
2166 lCRop = FM_MERGESRCNOT;
2167 break;
2168
2169 case wxAND:
2170 lCRop = FM_AND;
2171 break;
2172
2173 case wxOR:
2174 lCRop = FM_OR;
2175 break;
2176
2177 case wxAND_INVERT:
2178 lCRop = FM_SUBTRACT;
2179 break;
2180
2181 case wxEQUIV:
2182 case wxNAND:
2183 case wxCOPY:
2184 default:
2185 lCRop = FM_OVERPAINT;
2186 break;
2187 }
2188 ::GpiSetMix((HPS)hDC, lCRop);
2189} // end of wxDC::SetRop
2190
2191bool wxDC::StartDoc(
2192 const wxString& rsMessage
2193)
2194{
2195 // We might be previewing, so return TRUE to let it continue.
2196 return TRUE;
2197} // end of wxDC::StartDoc
2198
2199void wxDC::EndDoc()
2200{
2201} // end of wxDC::EndDoc
2202
2203void wxDC::StartPage()
2204{
2205} // end of wxDC::StartPage
2206
2207void wxDC::EndPage()
2208{
2209} // end of wxDC::EndPage
2210
2211// ---------------------------------------------------------------------------
2212// text metrics
2213// ---------------------------------------------------------------------------
2214
2215wxCoord wxDC::GetCharHeight() const
2216{
2217 FONTMETRICS vFM; // metrics structure
2218
2219 ::GpiQueryFontMetrics( m_hPS
2220 ,sizeof(FONTMETRICS)
2221 ,&vFM
2222 );
2223 return YDEV2LOGREL(vFM.lXHeight);
2224}
2225
2226wxCoord wxDC::GetCharWidth() const
2227{
2228 FONTMETRICS vFM; // metrics structure
2229
2230 ::GpiQueryFontMetrics( m_hPS
2231 ,sizeof(FONTMETRICS)
2232 ,&vFM
2233 );
2234 return XDEV2LOGREL(vFM.lAveCharWidth);
2235}
2236
2237void wxDC::DoGetTextExtent(
2238 const wxString& rsString
2239, wxCoord* pvX
2240, wxCoord* pvY
2241, wxCoord* pvDescent
2242, wxCoord* pvExternalLeading
2243, wxFont* pTheFont
2244) const
2245{
2246 POINTL avPoint[TXTBOX_COUNT];
2247 POINTL vPtMin;
2248 POINTL vPtMax;
2249 int i;
2250 int l;
2251 FONTMETRICS vFM; // metrics structure
2252 BOOL bRc;
2253 char* pStr;
2254 ERRORID vErrorCode; // last error id code
2255 wxFont* pFontToUse = (wxFont*)pTheFont;
2256
2257 char zMsg[128]; // DEBUG
2258 wxString sError;
2259
2260 if (!pFontToUse)
2261 pFontToUse = (wxFont*)&m_font;
2262 l = rsString.length();
2263 pStr = (PCH) rsString.c_str();
2264
2265 //
2266 // In world coordinates.
2267 //
2268 bRc = ::GpiQueryTextBox( m_hPS
2269 ,l
2270 ,pStr
2271 ,TXTBOX_COUNT // return maximum information
2272 ,avPoint // array of coordinates points
2273 );
2274 if(!bRc)
2275 {
2276 vErrorCode = ::WinGetLastError(wxGetInstance());
2277 sError = wxPMErrorToStr(vErrorCode);
2278 // DEBUG
2279 sprintf(zMsg, "GpiQueryTextBox for %s: failed with Error: %x - %s", pStr, vErrorCode, sError.c_str());
2280 (void)wxMessageBox( "wxWindows Menu sample"
2281 ,zMsg
2282 ,wxICON_INFORMATION
2283 );
2284 }
2285
2286 vPtMin.x = avPoint[0].x;
2287 vPtMax.x = avPoint[0].x;
2288 vPtMin.y = avPoint[0].y;
2289 vPtMax.y = avPoint[0].y;
2290 for (i = 1; i < 4; i++)
2291 {
2292 if(vPtMin.x > avPoint[i].x) vPtMin.x = avPoint[i].x;
2293 if(vPtMin.y > avPoint[i].y) vPtMin.y = avPoint[i].y;
2294 if(vPtMax.x < avPoint[i].x) vPtMax.x = avPoint[i].x;
2295 if(vPtMax.y < avPoint[i].y) vPtMax.y = avPoint[i].y;
2296 }
2297 ::GpiQueryFontMetrics( m_hPS
2298 ,sizeof(FONTMETRICS)
2299 ,&vFM
2300 );
2301
2302 if (pvX)
2303 *pvX = (wxCoord)(vPtMax.x - vPtMin.x + 1);
2304 if (pvY)
2305 *pvY = (wxCoord)(vPtMax.y - vPtMin.y + 1);
2306 if (pvDescent)
2307 *pvDescent = vFM.lMaxDescender;
2308 if (pvExternalLeading)
2309 *pvExternalLeading = vFM.lExternalLeading;
2310}
2311
2312void wxDC::SetMapMode(
2313 int nMode
2314)
2315{
2316 int nPixelWidth = 0;
2317 int nPixelHeight = 0;
2318 int nMmWidth = 1;
2319 int nMmHeight = 1;
2320 LONG lArray[CAPS_VERTICAL_RESOLUTION];
2321
2322 m_mappingMode = nMode;
2323
2324 if(::DevQueryCaps( m_hDC
2325 ,CAPS_FAMILY
2326 ,CAPS_VERTICAL_RESOLUTION
2327 ,lArray
2328 ))
2329 {
2330 LONG lHorzRes;
2331 LONG lVertRes;
2332
2333 nPixelWidth = lArray[CAPS_WIDTH];
2334 nPixelHeight = lArray[CAPS_HEIGHT];
2335 lHorzRes = lArray[CAPS_HORIZONTAL_RESOLUTION]; // returns pel/meter
2336 lVertRes = lArray[CAPS_VERTICAL_RESOLUTION]; // returns pel/meter
2337 nMmWidth = (lHorzRes/1000) * nPixelWidth;
2338 nMmWidth = (lVertRes/1000) * nPixelHeight;
2339 }
2340 if ((nPixelWidth == 0) || (nPixelHeight == 0) || (nMmWidth == 0) || (nMmHeight == 0))
2341 {
2342 return;
2343 }
2344
2345 double dMm2pixelsX = nPixelWidth/nMmWidth;
2346 double dMm2pixelsY = nPixelHeight/nMmHeight;
2347
2348 switch (nMode)
2349 {
2350 case wxMM_TWIPS:
2351 m_logicalScaleX = (twips2mm * dMm2pixelsX);
2352 m_logicalScaleY = (twips2mm * dMm2pixelsY);
2353 break;
2354
2355 case wxMM_POINTS:
2356 m_logicalScaleX = (pt2mm * dMm2pixelsX);
2357 m_logicalScaleY = (pt2mm * dMm2pixelsY);
2358 break;
2359
2360 case wxMM_METRIC:
2361 m_logicalScaleX = dMm2pixelsX;
2362 m_logicalScaleY = dMm2pixelsY;
2363 break;
2364
2365 case wxMM_LOMETRIC:
2366 m_logicalScaleX = (dMm2pixelsX/10.0);
2367 m_logicalScaleY = (dMm2pixelsY/10.0);
2368 break;
2369
2370 case wxMM_TEXT:
2371 default:
2372 m_logicalScaleX = 1.0;
2373 m_logicalScaleY = 1.0;
2374 break;
2375 }
2376 SIZEL vSize;
2377 ULONG ulOptions;
2378
2379 ulOptions = ::GpiQueryPS(m_hPS, &vSize);
2380 if (!ulOptions & PU_ARBITRARY)
2381 {
2382 ulOptions = PU_ARBITRARY | GPIF_DEFAULT;
2383 ::GpiSetPS(m_hPS, &vSize, ulOptions);
2384 }
2385 m_nWindowExtX = (int)MS_XDEV2LOG(VIEWPORT_EXTENT);
2386 m_nWindowExtY = (int)MS_YDEV2LOG(VIEWPORT_EXTENT);
2387 // ????
2388}; // end of wxDC::SetMapMode
2389
2390void wxDC::SetUserScale(
2391 double dX
2392, double dY
2393)
2394{
2395 m_userScaleX = dX;
2396 m_userScaleY = dY;
2397
2398 SetMapMode(m_mappingMode);
2399} // end of wxDC::SetUserScale
2400
2401void wxDC::SetAxisOrientation(
2402 bool bXLeftRight
2403, bool bYBottomUp
2404)
2405{
2406 m_signX = bXLeftRight ? 1 : -1;
2407 m_signY = bYBottomUp ? -1 : 1;
2408
2409 SetMapMode(m_mappingMode);
2410} // end of wxDC::SetAxisOrientation
2411
2412void wxDC::SetSystemScale(
2413 double dX
2414, double dY
2415)
2416{
2417 m_scaleX = dX;
2418 m_scaleY = dY;
2419
2420 SetMapMode(m_mappingMode);
2421} // end of wxDC::SetSystemScale
2422
2423void wxDC::SetLogicalOrigin(
2424 wxCoord vX
2425, wxCoord vY
2426)
2427{
2428 RECTL vRect;
2429
2430 ::GpiQueryPageViewport( m_hPS
2431 ,&vRect
2432 );
2433 vRect.xRight -= vX;
2434 vRect.yTop += vY;
2435 vRect.xLeft = vX;
2436 vRect.yBottom = vY;
2437 ::GpiSetPageViewport( m_hPS
2438 ,&vRect
2439 );
2440}; // end of wxDC::SetLogicalOrigin
2441
2442void wxDC::SetDeviceOrigin(
2443 wxCoord vX
2444, wxCoord vY
2445)
2446{
2447 RECTL vRect;
2448
2449 m_deviceOriginX = vX;
2450 m_deviceOriginY = vY;
2451 ::GpiQueryPageViewport( m_hPS
2452 ,&vRect
2453 );
2454 vRect.xLeft += vX;
2455 vRect.xRight += vX;
2456 vRect.yBottom -= vY;
2457 vRect.yTop -= vY;
2458 ::GpiSetPageViewport( m_hPS
2459 ,&vRect
2460 );
2461}; // end of wxDC::SetDeviceOrigin
2462
2463// ---------------------------------------------------------------------------
2464// coordinates transformations
2465// ---------------------------------------------------------------------------
2466
2467wxCoord wxDCBase::DeviceToLogicalX(wxCoord x) const
2468{
2469 return (wxCoord) (((x) - m_deviceOriginX)/(m_logicalScaleX*m_userScaleX*m_signX*m_scaleX) - m_logicalOriginX);
2470}
2471
2472wxCoord wxDCBase::DeviceToLogicalXRel(wxCoord x) const
2473{
2474 // axis orientation is not taken into account for conversion of a distance
2475 return (wxCoord) ((x)/(m_logicalScaleX*m_userScaleX*m_scaleX));
2476}
2477
2478wxCoord wxDCBase::DeviceToLogicalY(wxCoord y) const
2479{
2480 return (wxCoord) (((y) - m_deviceOriginY)/(m_logicalScaleY*m_userScaleY*m_signY*m_scaleY) - m_logicalOriginY);
2481}
2482
2483wxCoord wxDCBase::DeviceToLogicalYRel(wxCoord y) const
2484{
2485 // axis orientation is not taken into account for conversion of a distance
2486 return (wxCoord) ((y)/(m_logicalScaleY*m_userScaleY*m_scaleY));
2487}
2488
2489wxCoord wxDCBase::LogicalToDeviceX(wxCoord x) const
2490{
2491 return (wxCoord) ((x - m_logicalOriginX)*m_logicalScaleX*m_userScaleX*m_signX*m_scaleX + m_deviceOriginX);
2492}
2493
2494wxCoord wxDCBase::LogicalToDeviceXRel(wxCoord x) const
2495{
2496 // axis orientation is not taken into account for conversion of a distance
2497 return (wxCoord) (x*m_logicalScaleX*m_userScaleX*m_scaleX);
2498}
2499
2500wxCoord wxDCBase::LogicalToDeviceY(wxCoord y) const
2501{
2502 return (wxCoord) ((y - m_logicalOriginY)*m_logicalScaleY*m_userScaleY*m_signY*m_scaleY + m_deviceOriginY);
2503}
2504
2505wxCoord wxDCBase::LogicalToDeviceYRel(wxCoord y) const
2506{
2507 // axis orientation is not taken into account for conversion of a distance
2508 return (wxCoord) (y*m_logicalScaleY*m_userScaleY*m_scaleY);
2509}
2510
2511// ---------------------------------------------------------------------------
2512// bit blit
2513// ---------------------------------------------------------------------------
2514
2515bool wxDC::DoBlit(
2516 wxCoord vXdest
2517, wxCoord vYdest
2518, wxCoord vWidth
2519, wxCoord vHeight
2520, wxDC* pSource
2521, wxCoord vXsrc
2522, wxCoord vYsrc
2523, int nRop
2524, bool bUseMask
2525, wxCoord vXsrcMask
2526, wxCoord vYsrcMask
2527)
2528{
2529 wxMask* pMask = NULL;
2530 CHARBUNDLE vCbnd;
2531 COLORREF vOldTextColor;
2532 COLORREF vOldBackground = ::GpiQueryBackColor(m_hPS);
2533
2534 if (bUseMask)
2535 {
2536 const wxBitmap& rBmp = pSource->m_vSelectedBitmap;
2537
2538 pMask = rBmp.GetMask();
2539 if (!(rBmp.Ok() && pMask && pMask->GetMaskBitmap()))
2540 {
2541 bUseMask = FALSE;
2542 }
2543 }
2544
2545 ::GpiQueryAttrs( m_hPS
2546 ,PRIM_CHAR
2547 ,CBB_COLOR
2548 ,&vCbnd
2549 );
2550 vOldTextColor = (COLORREF)vCbnd.lColor;
2551
2552 if (m_textForegroundColour.Ok())
2553 {
2554 vCbnd.lColor = (LONG)m_textForegroundColour.GetPixel();
2555 ::GpiSetAttrs( m_hPS // presentation-space handle
2556 ,PRIM_CHAR // Char primitive.
2557 ,CBB_COLOR // sets color.
2558 ,0
2559 ,&vCbnd // buffer for attributes.
2560 );
2561 }
2562 if (m_textBackgroundColour.Ok())
2563 {
2564 ::GpiSetBackColor(m_hPS, (LONG)m_textBackgroundColour.GetPixel());
2565 }
2566
2567 LONG lRop = ROP_SRCCOPY;
2568
2569 switch (nRop)
2570 {
2571 case wxXOR: lRop = ROP_SRCINVERT; break;
2572 case wxINVERT: lRop = ROP_DSTINVERT; break;
2573 case wxOR_REVERSE: lRop = 0x00DD0228; break;
2574 case wxAND_REVERSE: lRop = ROP_SRCERASE; break;
2575 case wxCLEAR: lRop = ROP_ZERO; break;
2576 case wxSET: lRop = ROP_ONE; break;
2577 case wxOR_INVERT: lRop = ROP_MERGEPAINT; break;
2578 case wxAND: lRop = ROP_SRCAND; break;
2579 case wxOR: lRop = ROP_SRCPAINT; break;
2580 case wxEQUIV: lRop = 0x00990066; break;
2581 case wxNAND: lRop = 0x007700E6; break;
2582 case wxAND_INVERT: lRop = 0x00220326; break;
2583 case wxCOPY: lRop = ROP_SRCCOPY; break;
2584 case wxNO_OP: lRop = ROP_NOTSRCERASE; break;
2585 case wxSRC_INVERT: lRop = ROP_SRCINVERT; break;
2586 case wxNOR: lRop = ROP_NOTSRCCOPY; break;
2587 default:
2588 wxFAIL_MSG( wxT("unsupported logical function") );
2589 return FALSE;
2590 }
2591
2592 bool bSuccess;
2593
2594 if (bUseMask)
2595 {
2596 //
2597 // Blit bitmap with mask
2598 //
2599
2600 //
2601 // Create a temp buffer bitmap and DCs/PSs to access it and the mask
2602 //
2603 HDC hDCMask;
2604 HDC hDCBuffer;
2605 HPS hPSMask;
2606 HPS hPSBuffer;
2607 DEVOPENSTRUC vDOP = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
2608 BITMAPINFOHEADER2 vBmpHdr;
2609 HBITMAP hBufBitmap;
2610 SIZEL vSize = {0, 0};
2611 LONG rc;
2612
2613 memset(&vBmpHdr, 0, sizeof(BITMAPINFOHEADER2));
2614 vBmpHdr.cbFix = sizeof(BITMAPINFOHEADER2);
2615 vBmpHdr.cx = vWidth;
2616 vBmpHdr.cy = vHeight;
2617 vBmpHdr.cPlanes = 1;
2618 vBmpHdr.cBitCount = 24;
2619
2620#if wxUSE_DC_CACHEING
2621 if (TRUE)
2622 {
2623 //
2624 // create a temp buffer bitmap and DCs to access it and the mask
2625 //
2626 wxDCCacheEntry* pDCCacheEntry1 = FindDCInCache( NULL
2627 ,pSource->GetHPS()
2628 );
2629 wxDCCacheEntry* pDCCacheEntry2 = FindDCInCache( pDCCacheEntry1
2630 ,GetHPS()
2631 );
2632 wxDCCacheEntry* pBitmapCacheEntry = FindBitmapInCache( GetHPS()
2633 ,vWidth
2634 ,vHeight
2635 );
2636
2637 hPSMask = pDCCacheEntry1->m_hPS;
2638 hDCBuffer = (HDC)pDCCacheEntry2->m_hPS;
2639 hBufBitmap = (HBITMAP)pBitmapCacheEntry->m_hBitmap;
2640 }
2641 else
2642#endif
2643 {
2644 hDCMask = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDOP, NULLHANDLE);
2645 hDCBuffer = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDOP, NULLHANDLE);
2646 hPSMask = ::GpiCreatePS(vHabmain, hDCMask, &vSize, PU_PELS | GPIT_MICRO | GPIA_ASSOC);
2647 hPSBuffer = ::GpiCreatePS(vHabmain, hDCBuffer, &vSize, PU_PELS | GPIT_MICRO | GPIA_ASSOC);
2648 hBufBitmap = ::GpiCreateBitmap(GetHPS(), &vBmpHdr, 0L, NULL, NULL);
2649 }
2650
2651 POINTL aPoint1[4] = { 0, 0
2652 ,vWidth, vHeight
2653 ,vXdest, vYdest
2654 ,vXdest + vWidth, vYdest + vHeight
2655 };
2656 POINTL aPoint2[4] = { 0, 0
2657 ,vWidth, vHeight
2658 ,vXsrc, vYsrc
2659 ,vXsrc + vWidth, vYsrc + vHeight
2660 };
2661 POINTL aPoint3[4] = { vXdest, vYdest
2662 ,vXdest + vWidth, vYdest + vHeight
2663 ,vXsrc, vYsrc
2664 ,vXsrc + vWidth, vYsrc + vHeight
2665 };
2666 POINTL aPoint4[4] = { vXdest, vYdest
2667 ,vXdest + vWidth, vYdest + vHeight
2668 ,0, 0
2669 ,vWidth, vHeight
2670 };
2671 ::GpiSetBitmap(hPSMask, (HBITMAP) pMask->GetMaskBitmap());
2672 ::GpiSetBitmap(hPSBuffer, (HBITMAP) hBufBitmap);
2673
2674 //
2675 // Copy dest to buffer
2676 //
2677 rc = ::GpiBitBlt( hPSBuffer
2678 ,GetHPS()
2679 ,4L
2680 ,aPoint1
2681 ,ROP_SRCCOPY
2682 ,BBO_IGNORE
2683 );
2684 if (rc == GPI_ERROR)
2685 {
2686 wxLogLastError(wxT("BitBlt"));
2687 }
2688
2689 //
2690 // Copy src to buffer using selected raster op
2691 //
2692 rc = ::GpiBitBlt( hPSBuffer
2693 ,GetHPS()
2694 ,4L
2695 ,aPoint2
2696 ,lRop
2697 ,BBO_IGNORE
2698 );
2699 if (rc == GPI_ERROR)
2700 {
2701 wxLogLastError(wxT("BitBlt"));
2702 }
2703
2704 //
2705 // Set masked area in buffer to BLACK (pixel value 0)
2706 //
2707 COLORREF vPrevBkCol = ::GpiQueryBackColor(GetHPS());
2708 COLORREF vPrevCol = ::GpiQueryColor(GetHPS());
2709
2710 ::GpiSetBackColor(GetHPS(), OS2RGB(255, 255, 255));
2711 ::GpiSetColor(GetHPS(), OS2RGB(0, 0, 0));
2712
2713 rc = ::GpiBitBlt( hPSBuffer
2714 ,hPSMask
2715 ,4L
2716 ,aPoint2
2717 ,ROP_SRCAND
2718 ,BBO_IGNORE
2719 );
2720 if (rc == GPI_ERROR)
2721 {
2722 wxLogLastError(wxT("BitBlt"));
2723 }
2724
2725 //
2726 // Set unmasked area in dest to BLACK
2727 //
2728 ::GpiSetBackColor(GetHPS(), OS2RGB(0, 0, 0));
2729 ::GpiSetColor(GetHPS(), OS2RGB(255, 255, 255));
2730 rc = ::GpiBitBlt( GetHPS()
2731 ,hPSMask
2732 ,4L
2733 ,aPoint3
2734 ,ROP_SRCAND
2735 ,BBO_IGNORE
2736 );
2737 if (rc == GPI_ERROR)
2738 {
2739 wxLogLastError(wxT("BitBlt"));
2740 }
2741
2742 //
2743 // Restore colours to original values
2744 //
2745 ::GpiSetBackColor(GetHPS(), vPrevBkCol);
2746 ::GpiSetColor(GetHPS(), vPrevCol);
2747
2748 //
2749 // OR buffer to dest
2750 //
2751 rc = ::GpiBitBlt( GetHPS()
2752 ,hPSMask
2753 ,4L
2754 ,aPoint4
2755 ,ROP_SRCPAINT
2756 ,BBO_IGNORE
2757 );
2758 if (rc == GPI_ERROR)
2759 {
2760 bSuccess = FALSE;
2761 wxLogLastError(wxT("BitBlt"));
2762 }
2763
2764 //
2765 // Tidy up temporary DCs and bitmap
2766 //
2767 ::GpiSetBitmap(hPSMask, NULLHANDLE);
2768 ::GpiSetBitmap(hPSBuffer, NULLHANDLE);
2769#if !wxUSE_DC_CACHEING
2770 ::GpiDestroyPS(hPSMask);
2771 ::GpiDestroyPS(hPSBuffer);
2772 ::DevCloseDC(hDCMask);
2773 ::DevCloseDC(hDCBuffer);
2774 ::GpiDeleteBitmap(hBufBitmap);
2775#endif
2776 bSuccess = TRUE;
2777 }
2778 else // no mask, just BitBlt() it
2779 {
2780 POINTL aPoint[4] = { vXdest, vYdest
2781 ,vXdest + vWidth, vYdest + vHeight
2782 ,vXsrc, vYsrc
2783 ,vXsrc + vWidth, vYsrc + vHeight
2784 };
2785
2786 bSuccess = (::GpiBitBlt( m_hPS
2787 ,pSource->GetHPS()
2788 ,4L
2789 ,aPoint
2790 ,lRop
2791 ,BBO_IGNORE
2792 ) != GPI_ERROR);
2793 if (!bSuccess )
2794 {
2795 wxLogLastError(wxT("BitBlt"));
2796 }
2797 }
2798 vCbnd.lColor = (LONG)vOldTextColor;
2799 ::GpiSetAttrs( m_hPS // presentation-space handle
2800 ,PRIM_CHAR // Char primitive.
2801 ,CBB_COLOR // sets color.
2802 ,0
2803 ,&vCbnd // buffer for attributes.
2804 );
2805 ::GpiSetBackColor(m_hPS, (LONG)vOldBackground);
2806 return bSuccess;
2807}
2808
2809void wxDC::DoGetSize(
2810 int* pnWidth
2811, int* pnHeight
2812) const
2813{
2814 LONG lArray[CAPS_HEIGHT];
2815
2816 if(::DevQueryCaps( m_hDC
2817 ,CAPS_FAMILY
2818 ,CAPS_HEIGHT
2819 ,lArray
2820 ))
2821 {
2822 *pnWidth = lArray[CAPS_WIDTH];
2823 *pnHeight = lArray[CAPS_HEIGHT];
2824 }
2825}; // end of wxDC::DoGetSize(
2826
2827void wxDC::DoGetSizeMM(
2828 int* pnWidth
2829, int* pnHeight
2830) const
2831{
2832 LONG lArray[CAPS_VERTICAL_RESOLUTION];
2833
2834 if(::DevQueryCaps( m_hDC
2835 ,CAPS_FAMILY
2836 ,CAPS_VERTICAL_RESOLUTION
2837 ,lArray
2838 ))
2839 {
2840 int nWidth;
2841 int nHeight;
2842 int nHorzRes;
2843 int nVertRes;
2844
2845 nWidth = lArray[CAPS_WIDTH];
2846 nHeight = lArray[CAPS_HEIGHT];
2847 nHorzRes = lArray[CAPS_HORIZONTAL_RESOLUTION]; // returns pel/meter
2848 nVertRes = lArray[CAPS_VERTICAL_RESOLUTION]; // returns pel/meter
2849 nWidth = (nHorzRes/1000) * nWidth;
2850 nHeight = (nVertRes/1000) * nHeight;
2851 }
2852}; // end of wxDC::DoGetSizeMM
2853
2854wxSize wxDC::GetPPI() const
2855{
2856 LONG lArray[CAPS_VERTICAL_RESOLUTION];
2857 int nWidth;
2858 int nHeight;
2859
2860 if(::DevQueryCaps( m_hDC
2861 ,CAPS_FAMILY
2862 ,CAPS_VERTICAL_RESOLUTION
2863 ,lArray
2864 ))
2865 {
2866 int nPelWidth;
2867 int nPelHeight;
2868 int nHorzRes;
2869 int nVertRes;
2870
2871 nPelWidth = lArray[CAPS_WIDTH];
2872 nPelHeight = lArray[CAPS_HEIGHT];
2873 nHorzRes = lArray[CAPS_HORIZONTAL_RESOLUTION]; // returns pel/meter
2874 nVertRes = lArray[CAPS_VERTICAL_RESOLUTION]; // returns pel/meter
2875 nWidth = (nHorzRes/39.3) * nPelWidth;
2876 nHeight = (nVertRes/39.3) * nPelHeight;
2877 }
2878 return (wxSize(nWidth,nHeight));
2879} // end of wxDC::GetPPI
2880
2881void wxDC::SetLogicalScale(
2882 double dX
2883, double dY
2884)
2885{
2886 m_logicalScaleX = dX;
2887 m_logicalScaleY = dY;
2888}; // end of wxDC::SetLogicalScale
2889
2890
2891
wxWidgets (Impactor)