src/os2/dc.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        dc.cpp
   3 // Purpose:     wxDC class
   4 // Author:      David Webster
   5 // Modified by:
   6 // Created:     10/14/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) David Webster
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifndef WX_PRECOMP
  16     #include "wx/window.h"
  17     #include "wx/dc.h"
  18     #include "wx/utils.h"
  19     #include "wx/dialog.h"
  20     #include "wx/app.h"
  21     #include "wx/bitmap.h"
  22     #include "wx/dcmemory.h"
  23     #include "wx/log.h"
  24     #include "wx/icon.h"
  25     #include "wx/msgdlg.h"
  26     #include "wx/module.h"
  27 #endif
  28
  29 #include "wx/dcprint.h"
  30
  31 #include <string.h>
  32 #include <math.h>
  33
  34 #include "wx/os2/private.h"
  35
  36     IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject)
  37
  38 //
  39 // wxWindows uses the Microsoft convention that the origin is the UPPER left.
  40 // Native OS/2 however in the GPI and PM define the origin as the LOWER left.
  41 // In order to map OS/2 GPI/PM y coordinates to wxWindows coordinates we must
  42 // perform the following transformation:
  43 //
  44 // Parent object height:     POBJHEIGHT
  45 // Desried origin:           WXORIGINY
  46 // Object to place's height: OBJHEIGHT
  47 //
  48 // To get the OS2 position from the wxWindows one:
  49 //
  50 // OS2Y = POBJHEIGHT - (WXORIGINY + OBJHEIGHT)
  51 //
  52 // For OS/2 wxDC's we will always determine m_vRclPaint as the size of the
  53 // OS/2 Presentation Space associated with the device context.  y is the
  54 // desired application's y coordinate of the origin in wxWindows space.
  55 // objy is the height of the object we are going to draw.
  56 //
  57 #define OS2Y(y, objy) ((m_vRclPaint.yTop - m_vRclPaint.yBottom) - (y + objy))
  58
  59 // ---------------------------------------------------------------------------
  60 // constants
  61 // ---------------------------------------------------------------------------
  62
  63 static const int VIEWPORT_EXTENT = 1000;
  64
  65 static const int MM_POINTS = 9;
  66 static const int MM_METRIC = 10;
  67
  68 // usually this is defined in math.h
  69 #ifndef M_PI
  70     static const double M_PI = 3.14159265358979323846;
  71 #endif // M_PI
  72
  73 // ---------------------------------------------------------------------------
  74 // private functions
  75 // ---------------------------------------------------------------------------
  76
  77 // convert degrees to radians
  78 static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
  79
  80 int SetTextColor(
  81   HPS                               hPS
  82 , int                               nForegroundColour
  83 )
  84 {
  85     CHARBUNDLE                      vCbnd;
  86
  87     vCbnd.lColor =  nForegroundColour;
  88     ::GpiSetAttrs( hPS       // presentation-space handle
  89                   ,PRIM_CHAR // Char primitive.
  90                   ,CBB_COLOR // sets color.
  91                   ,0         //
  92                   ,&vCbnd    // buffer for attributes.
  93                  );
  94     return 0;
  95 }
  96
  97 int QueryTextBkColor(
  98   HPS                               hPS
  99 )
 100 {
 101     CHARBUNDLE                      vCbnd;
 102
 103     ::GpiQueryAttrs( hPS            // presentation-space handle
 104                     ,PRIM_CHAR      // Char primitive.
 105                     ,CBB_BACK_COLOR // Background color.
 106                     ,&vCbnd         // buffer for attributes.
 107                    );
 108     return vCbnd.lBackColor;
 109 }
 110
 111
 112 int SetTextBkColor(
 113   HPS                               hPS
 114 , int                               nBackgroundColour
 115 )
 116 {
 117     CHARBUNDLE                      vCbnd;
 118     int                             rc;
 119
 120     rc =  QueryTextBkColor(hPS);
 121
 122     vCbnd.lBackColor = nBackgroundColour;
 123     ::GpiSetAttrs(hPS,            // presentation-space handle
 124                   PRIM_CHAR,      // Char primitive.
 125                   CBB_BACK_COLOR, // sets color.
 126                   0,
 127                   &vCbnd          // buffer for attributes.
 128                  );
 129     return rc;
 130 }
 131
 132 int SetBkMode(
 133   HPS                               hPS
 134 , int                               nBackgroundMode
 135 )
 136 {
 137     if(nBackgroundMode == wxTRANSPARENT)
 138         ::GpiSetBackMix( hPS
 139                         ,BM_LEAVEALONE
 140                        );
 141     else
 142         // the background of the primitive takes  over whatever is underneath.
 143         ::GpiSetBackMix( hPS
 144                         ,BM_OVERPAINT
 145                         );
 146     return 0;
 147 }
 148
 149 // ===========================================================================
 150 // implementation
 151 // ===========================================================================
 152
 153 #if wxUSE_DC_CACHEING
 154
 155 /*
 156  * This implementation is a bit ugly and uses the old-fashioned wxList class, so I will
 157  * improve it in due course, either using arrays, or simply storing pointers to one
 158  * entry for the bitmap, and two for the DCs. -- JACS
 159  */
 160
 161 // ---------------------------------------------------------------------------
 162 // wxDCCacheEntry
 163 // ---------------------------------------------------------------------------
 164
 165 wxList wxDC::m_svBitmapCache;
 166 wxList wxDC::m_svDCCache;
 167
 168 wxDCCacheEntry::wxDCCacheEntry(
 169   WXHBITMAP                         hBitmap
 170 , int                               nWidth
 171 , int                               nHeight
 172 , int                               nDepth
 173 )
 174 {
 175     m_hBitmap = hBitmap;
 176     m_hPS     = NULLHANDLE;
 177     m_nWidth  = nWidth;
 178     m_nHeight = nHeight;
 179     m_nDepth  = nDepth;
 180 } // end of wxDCCacheEntry::wxDCCacheEntry
 181
 182 wxDCCacheEntry::wxDCCacheEntry(
 183   HPS                               hPS
 184 , int                               nDepth
 185 )
 186 {
 187     m_hBitmap = NULLHANDLE;
 188     m_hPS     = hPS;
 189     m_nWidth  = 0;
 190     m_nHeight = 0;
 191     m_nDepth  = nDepth;
 192 } // end of wxDCCacheEntry::wxDCCacheEntry
 193
 194 wxDCCacheEntry::~wxDCCacheEntry()
 195 {
 196     if (m_hBitmap)
 197         ::GpiDeleteBitmap(m_hBitmap);
 198     if (m_hPS)
 199         ::GpiDestroyPS(m_hPS);
 200 } // end of wxDCCacheEntry::~wxDCCacheEntry
 201
 202 wxDCCacheEntry* wxDC::FindBitmapInCache(
 203   HPS                               hPS
 204 , int                               nWidth
 205 , int                               nHeight
 206 )
 207 {
 208     int                             nDepth = 24; // we'll fix this later ::GetDeviceCaps((HDC) dc, PLANES) * ::GetDeviceCaps((HDC) dc, BITSPIXEL);
 209     wxNode*                         pNode = m_svBitmapCache.First();
 210     BITMAPINFOHEADER2               vBmpHdr;
 211
 212     while(pNode)
 213     {
 214         wxDCCacheEntry*             pEntry = (wxDCCacheEntry*)pNode->Data();
 215
 216         if (pEntry->m_nDepth == nDepth)
 217         {
 218             memset(&vBmpHdr, 0, sizeof(BITMAPINFOHEADER2));
 219
 220             if (pEntry->m_nWidth < nWidth || pEntry->m_nHeight < nHeight)
 221             {
 222                 ::GpiDeleteBitmap((HBITMAP)pEntry->m_hBitmap);
 223                 vBmpHdr.cbFix     = sizeof(BITMAPINFOHEADER2);
 224                 vBmpHdr.cx        = nWidth;
 225                 vBmpHdr.cy        = nHeight;
 226                 vBmpHdr.cPlanes   = 1;
 227                 vBmpHdr.cBitCount = nDepth;
 228
 229                 pEntry->m_hBitmap = (WXHBITMAP) ::GpiCreateBitmap( hPS
 230                                                                   ,&vBmpHdr
 231                                                                   ,0L, NULL, NULL
 232                                                                  );
 233                 if (!pEntry->m_hBitmap)
 234                 {
 235                     wxLogLastError(wxT("CreateCompatibleBitmap"));
 236                 }
 237                 pEntry->m_nWidth  = nWidth;
 238                 pEntry->m_nHeight = nHeight;
 239                 return pEntry;
 240             }
 241             return pEntry;
 242         }
 243         pNode = pNode->Next();
 244     }
 245     memset(&vBmpHdr, 0, sizeof(BITMAPINFOHEADER2));
 246     vBmpHdr.cbFix     = sizeof(BITMAPINFOHEADER2);
 247     vBmpHdr.cx        = nWidth;
 248     vBmpHdr.cy        = nHeight;
 249     vBmpHdr.cPlanes   = 1;
 250     vBmpHdr.cBitCount = nDepth;
 251
 252     WXHBITMAP                       hBitmap = (WXHBITMAP) ::GpiCreateBitmap( hPS
 253                                                                             ,&vBmpHdr
 254                                                                             ,0L, NULL, NULL
 255                                                                            );
 256     if (!hBitmap)
 257     {
 258         wxLogLastError(wxT("CreateCompatibleBitmap"));
 259     }
 260     wxDCCacheEntry*                 pEntry = new wxDCCacheEntry( hBitmap
 261                                                                 ,nWidth
 262                                                                 ,nHeight
 263                                                                 ,nDepth
 264                                                                );
 265     AddToBitmapCache(pEntry);
 266     return pEntry;
 267 } // end of FindBitmapInCache
 268
 269 wxDCCacheEntry* wxDC::FindDCInCache(
 270   wxDCCacheEntry*                   pNotThis
 271 , HPS                               hPS
 272 )
 273 {
 274     int                             nDepth = 24; // we'll fix this up later ::GetDeviceCaps((HDC) dc, PLANES) * ::GetDeviceCaps((HDC) dc, BITSPIXEL);
 275     wxNode*                         pNode = m_svDCCache.First();
 276
 277     while(pNode)
 278     {
 279         wxDCCacheEntry*             pEntry = (wxDCCacheEntry*)pNode->Data();
 280
 281         //
 282         // Don't return the same one as we already have
 283         //
 284         if (!pNotThis || (pNotThis != pEntry))
 285         {
 286             if (pEntry->m_nDepth == nDepth)
 287             {
 288                 return pEntry;
 289             }
 290         }
 291         pNode = pNode->Next();
 292     }
 293     wxDCCacheEntry*                 pEntry = new wxDCCacheEntry( hPS
 294                                                                 ,nDepth
 295                                                                );
 296     AddToDCCache(pEntry);
 297     return pEntry;
 298 } // end of wxDC::FindDCInCache
 299
 300 void wxDC::AddToBitmapCache(
 301   wxDCCacheEntry*                   pEntry
 302 )
 303 {
 304     m_svBitmapCache.Append(pEntry);
 305 } // end of wxDC::AddToBitmapCache
 306
 307 void wxDC::AddToDCCache(
 308   wxDCCacheEntry*                   pEntry
 309 )
 310 {
 311     m_svDCCache.Append(pEntry);
 312 } // end of wxDC::AddToDCCache
 313
 314 void wxDC::ClearCache()
 315 {
 316     m_svBitmapCache.DeleteContents(TRUE);
 317     m_svBitmapCache.Clear();
 318     m_svBitmapCache.DeleteContents(FALSE);
 319     m_svDCCache.DeleteContents(TRUE);
 320     m_svDCCache.Clear();
 321     m_svDCCache.DeleteContents(FALSE);
 322 } // end of wxDC::ClearCache
 323
 324 // Clean up cache at app exit
 325 class wxDCModule : public wxModule
 326 {
 327 public:
 328     virtual bool OnInit() { return TRUE; }
 329     virtual void OnExit() { wxDC::ClearCache(); }
 330
 331 private:
 332     DECLARE_DYNAMIC_CLASS(wxDCModule)
 333 }; // end of CLASS wxDCModule
 334
 335 IMPLEMENT_DYNAMIC_CLASS(wxDCModule, wxModule)
 336
 337 #endif // ndef for wxUSE_DC_CACHEING
 338
 339 // ---------------------------------------------------------------------------
 340 // wxDC
 341 // ---------------------------------------------------------------------------
 342
 343 wxDC::wxDC(void)
 344 {
 345     wxColour                        vColor;
 346
 347     m_pCanvas      = NULL;
 348
 349     m_hOldBitmap   = 0;
 350     m_hOldPen      = 0;
 351     m_hOldBrush    = 0;
 352     m_hOldFont     = 0;
 353     m_hOldPalette  = 0;
 354
 355     m_bOwnsDC      = FALSE;
 356     m_hDC          = 0;
 357     m_hOldPS       = NULL;
 358     m_hPS          = NULL;
 359     m_bIsPaintTime = FALSE; // True at Paint Time
 360
 361     vColor.InitFromName("BLACK");
 362     m_pen.SetColour(vColor);
 363     vColor.Set("WHITE");
 364     m_brush.SetColour(vColor);
 365 } // end of wxDC::wxDC
 366
 367 wxDC::~wxDC(void)
 368 {
 369     if ( m_hDC != 0 )
 370     {
 371         SelectOldObjects(m_hDC);
 372
 373         // if we own the HDC, we delete it, otherwise we just release it
 374
 375         if (m_bOwnsDC)
 376         {
 377             if(m_hPS)
 378             {
 379                 ::GpiAssociate(m_hPS, NULLHANDLE);
 380                 ::GpiDestroyPS(m_hPS);
 381             }
 382             m_hPS = NULLHANDLE;
 383             ::DevCloseDC((HDC)m_hDC);
 384         }
 385         else
 386         {
 387             //
 388             // Just Dissacociate, not destroy if we don't own the DC
 389             //
 390             if(m_hPS)
 391             {
 392                 ::GpiAssociate(m_hPS, NULLHANDLE);
 393             }
 394         }
 395     }
 396 } // end of wxDC::~wxDC
 397
 398 // This will select current objects out of the DC,
 399 // which is what you have to do before deleting the
 400 // DC.
 401 void wxDC::SelectOldObjects(
 402   WXHDC                             hPS
 403 )
 404 {
 405     if (hPS)
 406     {
 407         if (m_hOldBitmap)
 408         {
 409             ::GpiSetBitmap(hPS, (HBITMAP) m_hOldBitmap);
 410             if (m_vSelectedBitmap.Ok())
 411             {
 412                 m_vSelectedBitmap.SetSelectedInto(NULL);
 413             }
 414         }
 415         m_hOldBitmap = 0;
 416         //
 417         // OS/2 has no other native GDI objects to set in a PS/DC like windows
 418         //
 419         m_hOldPen = 0;
 420         m_hOldBrush = 0;
 421         m_hOldFont = 0;
 422         m_hOldPalette = 0;
 423     }
 424
 425     m_brush           = wxNullBrush;
 426     m_pen             = wxNullPen;
 427     m_palette         = wxNullPalette;
 428     m_font            = wxNullFont;
 429     m_backgroundBrush = wxNullBrush;
 430     m_vSelectedBitmap = wxNullBitmap;
 431 } // end of wxDC::SelectOldObjects
 432
 433 // ---------------------------------------------------------------------------
 434 // clipping
 435 // ---------------------------------------------------------------------------
 436
 437 #define DO_SET_CLIPPING_BOX()                    \
 438 {                                                \
 439     RECTL rect;                                  \
 440                                                  \
 441     ::GpiQueryClipBox(m_hPS, &rect);             \
 442                                                  \
 443     m_clipX1 = (wxCoord) XDEV2LOG(rect.xLeft);   \
 444     m_clipY1 = (wxCoord) YDEV2LOG(rect.yTop);    \
 445     m_clipX2 = (wxCoord) XDEV2LOG(rect.xRight);  \
 446     m_clipY2 = (wxCoord) YDEV2LOG(rect.yBottom); \
 447 }
 448
 449 void wxDC::DoSetClippingRegion(
 450   wxCoord                           vX
 451 , wxCoord                           vY
 452 , wxCoord                           vWidth
 453 , wxCoord                           vHeight
 454 )
 455 {
 456     RECTL                           vRect;
 457
 458     vY = OS2Y(vY,vHeight);
 459     m_clipping    = TRUE;
 460     vRect.xLeft   = vX;
 461     vRect.yTop    = vY + vHeight;
 462     vRect.xRight  = vX + vWidth;
 463     vRect.yBottom = vY;
 464     ::GpiIntersectClipRectangle(m_hPS, &vRect);
 465     DO_SET_CLIPPING_BOX()
 466 } // end of wxDC::DoSetClippingRegion
 467
 468 void wxDC::DoSetClippingRegionAsRegion(
 469   const wxRegion&                   rRegion
 470 )
 471 {
 472      wxCHECK_RET(rRegion.GetHRGN(), wxT("invalid clipping region"));
 473      HRGN                           hRgnOld;
 474
 475      m_clipping = TRUE;
 476      ::GpiSetClipRegion( m_hPS
 477                         ,(HRGN)rRegion.GetHRGN()
 478                         ,&hRgnOld
 479                        );
 480     DO_SET_CLIPPING_BOX()
 481 } // end of wxDC::DoSetClippingRegionAsRegion
 482
 483 void wxDC::DestroyClippingRegion(void)
 484 {
 485     if (m_clipping && m_hPS)
 486     {
 487          HRGN                       hRgnOld;
 488          RECTL                      vRect;
 489
 490          // TODO: this should restore the previous clipped region
 491          //       so that OnPaint processing works correctly, and
 492          //       the update doesn't get destroyed after the first
 493          //       DestroyClippingRegion
 494          vRect.xLeft   = XLOG2DEV(0);
 495          vRect.yTop    = YLOG2DEV(32000);
 496          vRect.xRight  = XLOG2DEV(32000);
 497          vRect.yBottom = YLOG2DEV(0);
 498
 499          HRGN                       hRgn = ::GpiCreateRegion(m_hPS, 1, &vRect);
 500
 501          ::GpiSetClipRegion(m_hPS, hRgn, &hRgnOld);
 502      }
 503       m_clipping = FALSE;
 504 } // end of wxDC::DestroyClippingRegion
 505
 506 // ---------------------------------------------------------------------------
 507 // query capabilities
 508 // ---------------------------------------------------------------------------
 509
 510 bool wxDC::CanDrawBitmap() const
 511 {
 512     return TRUE;
 513 }
 514
 515 bool wxDC::CanGetTextExtent() const
 516 {
 517     LONG                            lTechnology = 0L;
 518
 519     ::DevQueryCaps(GetHDC(), CAPS_TECHNOLOGY, 1L, &lTechnology);
 520     return (lTechnology == CAPS_TECH_RASTER_DISPLAY) || (lTechnology == CAPS_TECH_RASTER_PRINTER);
 521 } // end of wxDC::CanGetTextExtent
 522
 523 int wxDC::GetDepth() const
 524 {
 525     LONG                            lArray[CAPS_COLOR_BITCOUNT];
 526     int                             nBitsPerPixel;
 527
 528     if(::DevQueryCaps( GetHDC()
 529                       ,CAPS_FAMILY
 530                       ,CAPS_COLOR_BITCOUNT
 531                       ,lArray
 532                      ))
 533     {
 534         nBitsPerPixel = (int)lArray[CAPS_COLOR_BITCOUNT];
 535     }
 536     return nBitsPerPixel;
 537 } // end of wxDC::GetDepth
 538
 539 // ---------------------------------------------------------------------------
 540 // drawing
 541 // ---------------------------------------------------------------------------
 542
 543 void wxDC::Clear()
 544 {
 545     //
 546     // If this is a canvas DC then just fill with the background color
 547     // Otherwise purge the whole thing
 548     //
 549     if (m_pCanvas)
 550     {
 551         RECTL                       vRect;
 552
 553         ::GpiQueryClipBox(m_hPS, &vRect);
 554         ::WinFillRect(m_hPS, &vRect, ::GpiQueryBackColor(m_hPS));
 555     }
 556     else
 557     ::GpiErase(m_hPS);
 558 } // end of wxDC::Clear
 559
 560 bool wxDC::DoFloodFill(
 561   wxCoord                           vX
 562 , wxCoord                           vY
 563 , const wxColour&                   rCol
 564 , int                               nStyle
 565 )
 566 {
 567     POINTL                          vPtlPos;
 568     LONG                            lColor;
 569     LONG                            lOptions;
 570     LONG                            lHits;
 571     bool                            bSuccess = FALSE;
 572
 573     vPtlPos.x = vX;             // Loads x-coordinate
 574     vPtlPos.y = OS2Y(vY,0);     // Loads y-coordinate
 575     ::GpiMove(m_hPS, &vPtlPos); // Sets current position
 576     lColor = rCol.GetPixel();
 577     lOptions = FF_BOUNDARY;
 578     if(wxFLOOD_SURFACE == nStyle)
 579         lOptions = FF_SURFACE;
 580
 581     if ((lHits = ::GpiFloodFill(m_hPS, lOptions, lColor)) != GPI_ERROR)
 582         bSuccess = TRUE;
 583     return TRUE;
 584 } // end of wxDC::DoFloodFill
 585
 586 bool wxDC::DoGetPixel(
 587   wxCoord                           vX
 588 , wxCoord                           vY
 589 , wxColour*                         pCol
 590 ) const
 591 {
 592     POINTL                          vPoint;
 593     LONG                            lColor;
 594
 595     vPoint.x = vX;
 596     vPoint.y = OS2Y(vY,0);
 597     lColor = ::GpiSetPel(m_hPS, &vPoint);
 598
 599     //
 600     // Get the color of the pen
 601     //
 602     LONG                            lPencolor = 0x00ffffff;
 603
 604     if (m_pen.Ok())
 605     {
 606         lPencolor = m_pen.GetColour().GetPixel();
 607     }
 608
 609     //
 610     // return the color of the pixel
 611     //
 612     if(pCol)
 613         pCol->Set( GetRValue(lColor)
 614                   ,GetGValue(lColor)
 615                   ,GetBValue(lColor)
 616                  );
 617     return(lColor == lPencolor);
 618 } // end of wxDC::DoGetPixel
 619
 620 void wxDC::DoCrossHair(
 621   wxCoord                           vX
 622 , wxCoord                           vY
 623 )
 624 {
 625     vY = OS2Y(vY,0);
 626
 627     wxCoord                         vX1 = vX - VIEWPORT_EXTENT;
 628     wxCoord                         vY1 = vY - VIEWPORT_EXTENT;
 629     wxCoord                         vX2 = vX + VIEWPORT_EXTENT;
 630     wxCoord                         vY2 = vY + VIEWPORT_EXTENT;
 631     POINTL                          vPoint[4];
 632
 633     vPoint[0].x = vX1;
 634     vPoint[0].y = vY;
 635
 636     vPoint[1].x = vX2;
 637     vPoint[1].y = vY;
 638
 639     ::GpiMove(m_hPS, &vPoint[0]);
 640     ::GpiLine(m_hPS, &vPoint[1]);
 641
 642     vPoint[2].x = vX;
 643     vPoint[2].y = vY1;
 644
 645     vPoint[3].x = vX;
 646     vPoint[3].y = vY2;
 647
 648     ::GpiMove(m_hPS, &vPoint[2]);
 649     ::GpiLine(m_hPS, &vPoint[3]);
 650     CalcBoundingBox(vX1, vY1);
 651     CalcBoundingBox(vX2, vY2);
 652 } // end of wxDC::DoCrossHair
 653
 654 void wxDC::DoDrawLine(
 655   wxCoord                           vX1
 656 , wxCoord                           vY1
 657 , wxCoord                           vX2
 658 , wxCoord                           vY2
 659 )
 660 {
 661     POINTL                          vPoint[2];
 662
 663     vY1 = OS2Y(vY1,0);
 664     vY2 = OS2Y(vY2,0);
 665
 666     vPoint[0].x = vX1;
 667     vPoint[0].y = vY1;
 668     vPoint[1].x = vX2;
 669     vPoint[1].y = vY2;
 670     ::GpiMove(m_hPS, &vPoint[0]);
 671     ::GpiLine(m_hPS, &vPoint[1]);
 672     CalcBoundingBox(vX1, vY1);
 673     CalcBoundingBox(vX2, vY2);
 674 } // end of wxDC::DoDrawLine
 675
 676 //////////////////////////////////////////////////////////////////////////////
 677 // Draws an arc of a circle, centred on (xc, yc), with starting point (x1, y1)
 678 // and ending at (x2, y2). The current pen is used for the outline and the
 679 // current brush for filling the shape. The arc is drawn in an anticlockwise
 680 // direction from the start point to the end point.
 681 //////////////////////////////////////////////////////////////////////////////
 682 void wxDC::DoDrawArc(
 683   wxCoord                           vX1
 684 , wxCoord                           vY1
 685 , wxCoord                           vX2
 686 , wxCoord                           vY2
 687 , wxCoord                           vXc
 688 , wxCoord                           vYc
 689 )
 690 {
 691      POINTL                         vPtlPos;
 692      POINTL                         vPtlArc[2]; // Structure for current position
 693      int                            nDx;
 694      int                            nDy;
 695      double                         dRadius;
 696      double                         dAngl1;
 697      double                         dAngl2;
 698      double                         dAnglmid;
 699      wxCoord                        vXm;
 700      wxCoord                        vYm;
 701      ARCPARAMS                      vArcp; // Structure for arc parameters
 702
 703     if((vX1 == vXc && vY1 == vXc) || (vX2 == vXc && vY2 == vXc))
 704         return; // Draw point ??
 705     dRadius = 0.5 * ( hypot( (double)(vY1 - vYc)
 706                             ,(double)(vX1 - vXc)
 707                            ) +
 708                       hypot( (double)(vY2 - vYc)
 709                             ,(double)(vX2 - vXc)
 710                            )
 711                      );
 712
 713     dAngl1 = atan2( (double)(vY1 - vYc)
 714                    ,(double)(vX1 - vXc)
 715                   );
 716     dAngl2 = atan2( (double)(vY2 - vYc)
 717                    ,(double)(vX2 - vXc)
 718                   );
 719     if(dAngl2 < dAngl1)
 720         dAngl2 += M_PI * 2;
 721
 722     //
 723     // GpiPointArc can't draw full arc
 724     //
 725      if(dAngl2 == dAngl1 || (vX1 == vX2 && vY1 == vY2) )
 726      {
 727         //
 728         // Medium point
 729         //
 730         dAnglmid = (dAngl1 + dAngl2)/2. + M_PI;
 731         vXm      = vXc + dRadius * cos(dAnglmid);
 732         vYm      = vYc + dRadius * sin(dAnglmid);
 733         DoDrawArc( vX1, vY1
 734                   ,vXm, vYm
 735                   ,vXc, vYc
 736                  );
 737         DoDrawArc( vXm, vYm
 738                   ,vX2, vY2
 739                   ,vXc, vYc
 740                  );
 741         return;
 742     }
 743
 744     //
 745     // Medium point
 746     //
 747     dAnglmid = (dAngl1 + dAngl2)/2.;
 748     vXm      = vXc + dRadius * cos(dAnglmid);
 749     vYm      = vYc + dRadius * sin(dAnglmid);
 750
 751     //
 752     // Ellipse main axis (r,q), (p,s) with center at (0,0) */
 753     //
 754     vArcp.lR = 0;
 755     vArcp.lQ = 1;
 756     vArcp.lP = 1;
 757     vArcp.lS = 0;
 758     ::GpiSetArcParams(m_hPS, &vArcp); // Sets parameters to default
 759
 760     vPtlPos.x = vX1; // Loads x-coordinate
 761     vPtlPos.y = vY1; // Loads y-coordinate
 762     ::GpiMove(m_hPS, &vPtlPos); // Sets current position
 763     vPtlArc[0].x = vXm;
 764     vPtlArc[0].y = vYm;
 765     vPtlArc[1].x = vX2;
 766     vPtlArc[1].y = vY2;
 767     ::GpiPointArc(m_hPS, vPtlArc); // Draws the arc
 768     CalcBoundingBox( (vXc - dRadius)
 769                     ,(vYc - dRadius)
 770                    );
 771     CalcBoundingBox( (vXc + dRadius)
 772                     ,(vYc + dRadius)
 773                    );
 774 } // end of wxDC::DoDrawArc
 775
 776 void wxDC::DoDrawCheckMark(
 777   wxCoord                           vX1
 778 , wxCoord                           vY1
 779 , wxCoord                           vWidth
 780 , wxCoord                           vHeight
 781 )
 782 {
 783     POINTL                          vPoint[2];
 784
 785     vY1 = OS2Y(vY1,vHeight);
 786
 787     vPoint[0].x = vX1;
 788     vPoint[0].y = vY1;
 789     vPoint[1].x = vX1 + vWidth;
 790     vPoint[1].y = vY1 + vHeight;
 791
 792     ::GpiMove(m_hPS, &vPoint[0]);
 793     ::GpiBox( m_hPS       // handle to a presentation space
 794              ,DRO_OUTLINE // draw the box outline ? or ?
 795              ,&vPoint[1]  // address of the corner
 796              ,0L          // horizontal corner radius
 797              ,0L          // vertical corner radius
 798             );
 799     if(vWidth > 4 && vHeight > 4)
 800     {
 801         int                         nTmp;
 802
 803         vPoint[0].x += 2; vPoint[0].y += 2;
 804         vPoint[1].x -= 2; vPoint[1].y -= 2;
 805         ::GpiMove(m_hPS, &vPoint[0]);
 806         ::GpiLine(m_hPS, &vPoint[1]);
 807         nTmp = vPoint[0].x;
 808         vPoint[0].x = vPoint[1].x;
 809         vPoint[1].x = nTmp;
 810         ::GpiMove(m_hPS, &vPoint[0]);
 811         ::GpiLine(m_hPS, &vPoint[1]);
 812     }
 813     CalcBoundingBox( vX1
 814                     ,vY1
 815                    );
 816
 817     wxCoord                         vX2 = vX1 + vWidth;
 818     wxCoord                         vY2 = vY1 + vHeight;
 819
 820     CalcBoundingBox( vX2
 821                     ,vY2
 822                    );
 823 } // end of wxDC::DoDrawCheckMark
 824
 825 void wxDC::DoDrawPoint(
 826   wxCoord                           vX
 827 , wxCoord                           vY
 828 )
 829 {
 830     POINTL                          vPoint;
 831     COLORREF                        vColor = 0x00ffffff;
 832
 833     if (m_pen.Ok())
 834     {
 835         vColor = m_pen.GetColour().GetPixel();
 836     }
 837     ::GpiSetColor(m_hPS, vColor);
 838     vPoint.x = vX;
 839     vPoint.y = OS2Y(vY,0);
 840     ::GpiSetPel(m_hPS, &vPoint);
 841     CalcBoundingBox( vX
 842                     ,vY
 843                    );
 844 } // end of wxDC::DoDrawPoint
 845
 846 void wxDC::DoDrawPolygon(
 847   int                               n
 848 , wxPoint                           vPoints[]
 849 , wxCoord                           vXoffset
 850 , wxCoord                           vYoffset
 851 , int                               nFillStyle
 852 )
 853 {
 854     ULONG                           ulCount = 1;    // Number of polygons.
 855     POLYGON                         vPlgn;          // polygon.
 856     ULONG                           flOptions = 0L; // Drawing options.
 857
 858 //////////////////////////////////////////////////////////////////////////////
 859 // This contains fields of option bits... to draw boundary lines as well as
 860 // the area interior.
 861 //
 862 // Drawing boundary lines:
 863 //   POLYGON_NOBOUNDARY              Does not draw boundary lines.
 864 //   POLYGON_BOUNDARY                Draws boundary lines (the default).
 865 //
 866 // Construction of the area interior:
 867 //   POLYGON_ALTERNATE               Constructs interior in alternate mode
 868 //                                   (the default).
 869 //   POLYGON_WINDING                 Constructs interior in winding mode.
 870 //////////////////////////////////////////////////////////////////////////////
 871
 872     ULONG                           flModel = 0L; // Drawing model.
 873
 874 //////////////////////////////////////////////////////////////////////////////
 875 // Drawing model.
 876 //   POLYGON_INCL  Fill is inclusive of bottom right (the default).
 877 //   POLYGON_EXCL  Fill is exclusive of bottom right.
 878 //       This is provided to aid migration from other graphics models.
 879 //////////////////////////////////////////////////////////////////////////////
 880
 881     LONG                            lHits = 0L; // Correlation/error indicator.
 882     POINTL                          vPoint;
 883     int                             i;
 884     int                             nIsTRANSPARENT = 0;
 885     LONG                            lBorderColor = 0L;
 886     LONG                            lColor = 0L;
 887
 888     lBorderColor = m_pen.GetColour().GetPixel();
 889     lColor       = m_brush.GetColour().GetPixel();
 890     if(m_brush.GetStyle() == wxTRANSPARENT)
 891         nIsTRANSPARENT = 1;
 892
 893     vPlgn.ulPoints = n;
 894     vPlgn.aPointl = (POINTL*) calloc( n + 1
 895                                      ,sizeof(POINTL)
 896                                     ); // well, new will call malloc
 897
 898     for(i = 0; i < n; i++)
 899     {
 900         vPlgn.aPointl[i].x = vPoints[i].x;         // +xoffset;
 901         vPlgn.aPointl[i].y = OS2Y(vPoints[i].y,0); // +yoffset;
 902     }
 903     flModel = POLYGON_BOUNDARY;
 904     if(nFillStyle == wxWINDING_RULE)
 905         flModel |= POLYGON_WINDING;
 906     else
 907         flModel |= POLYGON_ALTERNATE;
 908
 909     vPoint.x = vXoffset;
 910     vPoint.y = OS2Y(vYoffset,0);
 911
 912     ::GpiSetColor(m_hPS, lBorderColor);
 913     ::GpiMove(m_hPS, &vPoint);
 914     lHits = ::GpiPolygons(m_hPS, ulCount, &vPlgn, flOptions, flModel);
 915     free(vPlgn.aPointl);
 916 } // end of wxDC::DoDrawPolygon
 917
 918 void wxDC::DoDrawLines(
 919   int                               n
 920 , wxPoint                           vPoints[]
 921 , wxCoord                           vXoffset
 922 , wxCoord                           vYoffset
 923 )
 924 {
 925     POINTL                          vPoint;
 926
 927     if (vXoffset != 0L || vXoffset != 0L)
 928     {
 929         int                             i;
 930
 931         vPoint.x = vPoints[0].x + vXoffset;
 932         vPoint.y = OS2Y(vPoints[0].y + vYoffset,0);
 933         ::GpiMove(m_hPS, &vPoint);
 934
 935         LONG                            lBorderColor = m_pen.GetColour().GetPixel();
 936
 937         ::GpiSetColor(m_hPS, lBorderColor);
 938         for(i = 1; i < n; i++)
 939         {
 940             vPoint.x = vPoints[i].x + vXoffset;
 941             vPoint.y = OS2Y(vPoints[i].y + vYoffset,0);
 942             ::GpiLine(m_hPS, &vPoint);
 943         }
 944     }
 945     else
 946     {
 947         int                         i;
 948
 949         CalcBoundingBox( vPoints[i].x
 950                         ,vPoints[i].y
 951                        );
 952         vPoint.x = vPoints[0].x;
 953         vPoint.y = OS2Y(vPoints[0].y,0);
 954         ::GpiMove(m_hPS, &vPoint);
 955
 956         for (i = 0; i < n; i++)
 957         {
 958             CalcBoundingBox( vPoints[i].x
 959                             ,vPoints[i].y
 960                            );
 961             vPoint.x = vPoints[i].x;
 962             vPoint.y = OS2Y(vPoints[i].y,0);
 963             ::GpiLine(m_hPS, &vPoint);
 964         }
 965     }
 966 } // end of wxDC::DoDrawLines
 967
 968 void wxDC::DoDrawRectangle(
 969   wxCoord                           vX
 970 , wxCoord                           vY
 971 , wxCoord                           vWidth
 972 , wxCoord                           vHeight
 973 )
 974 {
 975     POINTL                          vPoint[2];
 976     LONG                            lControl;
 977     LONG                            lColor;
 978     LONG                            lBorderColor;
 979     int                             nIsTRANSPARENT = 0;
 980
 981     //
 982     // Might be a memory DC with no Paint rect
 983     //
 984     if (!(m_vRclPaint.yTop == 0 &&
 985           m_vRclPaint.yBottom == 0 &&
 986           m_vRclPaint.xRight == 0 &&
 987           m_vRclPaint.xLeft == 0))
 988         vY = OS2Y(vY,vHeight);
 989
 990     wxCoord                         vX2 = vX + vWidth;
 991     wxCoord                         vY2 = vY + vHeight;
 992
 993     vPoint[0].x = vX;
 994     vPoint[0].y = vY;
 995     vPoint[1].x = vX + vWidth;
 996     vPoint[1].y = vY + vHeight;
 997     ::GpiMove(m_hPS, &vPoint[0]);
 998     lColor       = m_brush.GetColour().GetPixel();
 999     lBorderColor = m_pen.GetColour().GetPixel();
1000     if (m_brush.GetStyle() == wxTRANSPARENT)
1001         nIsTRANSPARENT = 1;
1002     if(lColor == lBorderColor || nIsTRANSPARENT)
1003     {
1004         lControl = DRO_OUTLINEFILL; //DRO_FILL;
1005         if(m_brush.GetStyle() == wxTRANSPARENT)
1006             lControl = DRO_OUTLINE;
1007
1008         ::GpiSetColor(m_hPS, lColor);
1009         ::GpiBox( m_hPS       // handle to a presentation space
1010                  ,lControl   // draw the box outline ? or ?
1011                  ,&vPoint[1]  // address of the corner
1012                  ,0L          // horizontal corner radius
1013                  ,0L          // vertical corner radius
1014                 );
1015     }
1016     else
1017     {
1018         lControl = DRO_OUTLINE;
1019         ::GpiSetColor( m_hPS
1020                       ,lBorderColor
1021                      );
1022         ::GpiBox( m_hPS
1023                  ,lControl
1024                  ,&vPoint[1]
1025                  ,0L
1026                  ,0L
1027                 );
1028         lControl = DRO_FILL;
1029         ::GpiSetColor( m_hPS
1030                       ,lColor
1031                      );
1032         vPoint[0].x = vX + 1;
1033         vPoint[0].y = vY + 1;
1034         vPoint[1].x = vX + vWidth - 1;
1035         vPoint[1].y = vY + vHeight - 1;
1036         ::GpiMove(m_hPS, &vPoint[0]);
1037         ::GpiBox( m_hPS
1038                  ,lControl
1039                  ,&vPoint[1]
1040                  ,0L
1041                  ,0L
1042                 );
1043         //
1044         // Debug testing:
1045         //
1046         for (int i = 0; i < vHeight; i++)
1047         {
1048             for (int j = 0; j < vHeight; j++)
1049             {
1050                 vPoint[0].x = j; vPoint[0].y = i;
1051                 lColor = ::GpiQueryPel(m_hPS, &vPoint[0]);
1052             }
1053         }
1054     }
1055     CalcBoundingBox(vX, vY);
1056     CalcBoundingBox(vX2, vY2);
1057 } // end of wxDC::DoDrawRectangle
1058
1059 void wxDC::DoDrawRoundedRectangle(
1060   wxCoord                           vX
1061 , wxCoord                           vY
1062 , wxCoord                           vWidth
1063 , wxCoord                           vHeight
1064 , double                            dRadius
1065 )
1066 {
1067     POINTL                          vPoint[2];
1068     LONG                            lControl;
1069
1070     vY = OS2Y(vY,vHeight);
1071
1072     wxCoord                         vX2 = (vX + vWidth);
1073     wxCoord                         vY2 = (vY + vHeight);
1074
1075     vPoint[0].x = vX;
1076     vPoint[0].y = YLOG2DEV(vY) - vHeight;
1077     vPoint[1].x = vX + vWidth;
1078     vPoint[1].y = vY;
1079     ::GpiMove(m_hPS, &vPoint[0]);
1080
1081     lControl = DRO_OUTLINEFILL; //DRO_FILL;
1082     if (m_brush.GetStyle() == wxTRANSPARENT)
1083         lControl = DRO_OUTLINE;
1084     ::GpiBox( m_hPS         // handle to a presentation space
1085              ,DRO_OUTLINE   // draw the box outline ? or ?
1086              ,&vPoint[1]    // address of the corner
1087              ,(LONG)dRadius // horizontal corner radius
1088              ,(LONG)dRadius // vertical corner radius
1089             );
1090     CalcBoundingBox(vX, vY);
1091     CalcBoundingBox(vX2, vY2);
1092 } // end of wxDC::DoDrawRoundedRectangle
1093
1094 // Draw Ellipse within box (x,y) - (x+width, y+height)
1095 void wxDC::DoDrawEllipse(
1096   wxCoord                           vX
1097 , wxCoord                           vY
1098 , wxCoord                           vWidth
1099 , wxCoord                           vHeight
1100 )
1101 {
1102     POINTL                          vPtlPos; // Structure for current position
1103     FIXED                           vFxMult; // Multiplier for ellipse
1104     ARCPARAMS                       vArcp;   // Structure for arc parameters
1105
1106     vY = OS2Y(vY,vHeight);
1107
1108     vArcp.lR = 0;
1109     vArcp.lQ = vHeight/2;
1110     vArcp.lP = vWidth/2;
1111     vArcp.lS = 0;
1112     ::GpiSetArcParams( m_hPS
1113                       ,&vArcp
1114                      ); // Sets parameters to default
1115     vPtlPos.x = vX + vWidth/2;  // Loads x-coordinate
1116     vPtlPos.y = vY + vHeight/2; // Loads y-coordinate
1117     ::GpiMove( m_hPS
1118               ,&vPtlPos
1119              ); // Sets current position
1120     vFxMult = MAKEFIXED(1, 0);             /* Sets multiplier            */
1121
1122     //
1123     // DRO_FILL, DRO_OTLINEFILL - where to get
1124     //
1125     ::GpiFullArc( m_hPS
1126                  ,DRO_OUTLINE
1127                  ,vFxMult
1128                 ); // Draws full arc with center at current position
1129
1130     wxCoord                         vX2 = (vX + vWidth);
1131     wxCoord                         vY2 = (vY + vHeight);
1132
1133     CalcBoundingBox(vX, vY);
1134     CalcBoundingBox(vX2, vY2);
1135 } // end of wxDC::DoDrawEllipse
1136
1137 void wxDC::DoDrawEllipticArc(
1138   wxCoord                           vX
1139 , wxCoord                           vY
1140 , wxCoord                           vWidth
1141 , wxCoord                           vHeight
1142 , double                            dSa
1143 , double                            dEa
1144 )
1145 {
1146     POINTL                          vPtlPos; // Structure for current position
1147     FIXED                           vFxMult; // Multiplier for ellipse
1148     ARCPARAMS                       vArcp;   // Structure for arc parameters
1149     FIXED                           vFSa;
1150     FIXED                           vFSweepa; // Start angle, sweep angle
1151     double                          dIntPart;
1152     double                          dFractPart;
1153     double                          dRadius;
1154
1155     vY = OS2Y(vY,vHeight);
1156
1157     dFractPart = modf(dSa,&dIntPart);
1158     vFSa = MAKEFIXED((int)dIntPart, (int)(dFractPart * 0xffff) );
1159     dFractPart = modf(dEa - dSa, &dIntPart);
1160     vFSweepa = MAKEFIXED((int)dIntPart, (int)(dFractPart * 0xffff) );
1161
1162     //
1163     // Ellipse main axis (r,q), (p,s) with center at (0,0)
1164     //
1165     vArcp.lR = 0;
1166     vArcp.lQ = vHeight/2;
1167     vArcp.lP = vWidth/2;
1168     vArcp.lS = 0;
1169     ::GpiSetArcParams(m_hPS, &vArcp); // Sets parameters to default
1170     vPtlPos.x = vX + vWidth/2  * (1. + cos(DegToRad(dSa))); // Loads x-coordinate
1171     vPtlPos.y = vY + vHeight/2 * (1. + sin(DegToRad(dSa))); // Loads y-coordinate
1172     ::GpiMove(m_hPS, &vPtlPos); // Sets current position
1173
1174     //
1175     // May be not to the center ?
1176     //
1177     vPtlPos.x = vX + vWidth/2 ; // Loads x-coordinate
1178     vPtlPos.y = vY + vHeight/2; // Loads y-coordinate
1179     vFxMult = MAKEFIXED(1, 0);  // Sets multiplier
1180
1181     //
1182     // DRO_FILL, DRO_OTLINEFILL - where to get
1183     //
1184     ::GpiPartialArc( m_hPS
1185                     ,&vPtlPos
1186                     ,vFxMult
1187                     ,vFSa
1188                     ,vFSweepa
1189                    );
1190     wxCoord                         vX2 = (vX + vWidth);
1191     wxCoord                         vY2 = (vY + vHeight);
1192
1193     CalcBoundingBox(vX, vY);
1194     CalcBoundingBox(vX2, vY2);
1195 } // end of wxDC::DoDrawEllipticArc
1196
1197 void wxDC::DoDrawIcon(
1198   const wxIcon&                     rIcon
1199 , wxCoord                           vX
1200 , wxCoord                           vY
1201 )
1202 {
1203     vY = OS2Y(vY,rIcon.GetHeight());
1204     wxCHECK_RET( rIcon.Ok(), wxT("invalid icon in DrawIcon") );
1205
1206     ::WinDrawPointer( GetHPS()
1207                      ,vX
1208                      ,vY
1209                      ,(HPOINTER)GetHiconOf(rIcon)
1210                      ,DP_NORMAL
1211                     );
1212     CalcBoundingBox(vX, vY);
1213     CalcBoundingBox(vX + rIcon.GetWidth(), vY + rIcon.GetHeight());
1214 } // end of wxDC::DoDrawIcon
1215
1216 void wxDC::DoDrawBitmap(
1217   const wxBitmap&                   rBmp
1218 , wxCoord                           vX
1219 , wxCoord                           vY
1220 , bool                              bUseMask
1221 )
1222 {
1223     if (!bUseMask && !IsKindOf(CLASSINFO(wxPrinterDC)))
1224     {
1225         HBITMAP                         hBitmap =  (HBITMAP)rBmp.GetHBITMAP();
1226         wxBitmap                        vNewBitmap( rBmp.GetWidth()
1227                                                    ,rBmp.GetHeight()
1228                                                    ,rBmp.GetDepth()
1229                                                   );
1230         HBITMAP                         hBitmapOld = ::GpiSetBitmap((HPS)GetHPS(), vNewBitmap.GetHBITMAP());
1231         LONG                            lOldTextground = ::GpiQueryColor((HPS)GetHPS());
1232         LONG                            lOldBackground = ::GpiQueryBackColor((HPS)GetHPS());
1233
1234         if (m_textForegroundColour.Ok())
1235         {
1236             ::GpiSetColor( (HPS)GetHPS()
1237                            ,m_textForegroundColour.GetPixel()
1238                           );
1239         }
1240         if (m_textBackgroundColour.Ok())
1241         {
1242             ::GpiSetBackColor( (HPS)GetHPS()
1243                               ,m_textBackgroundColour.GetPixel()
1244                              );
1245         }
1246
1247         vY = OS2Y(vY,rBmp.GetHeight());
1248
1249         //
1250         // Flip the picture as OS/2 is upside-down
1251         //
1252         POINTL                      vPoint[4] = { vX, vY + rBmp.GetHeight()
1253                                                  ,vX + rBmp.GetWidth(), vY
1254                                                  ,0, 0
1255                                                  ,rBmp.GetWidth(), rBmp.GetHeight()
1256                                                 };
1257         ::GpiWCBitBlt( (HPS)GetHPS()
1258                       ,hBitmap
1259                       ,4
1260                       ,vPoint
1261                       ,ROP_SRCCOPY
1262                       ,BBO_IGNORE
1263                      );
1264         ::GpiSetBitmap((HPS)GetHPS(), hBitmapOld);
1265         ::GpiSetColor((HPS)GetHPS(), lOldTextground);
1266         ::GpiSetBackColor((HPS)GetHPS(), lOldBackground);
1267     }
1268 } // end of wxDC::DoDrawBitmap
1269
1270 void wxDC::DoDrawText(
1271   const wxString&                   rsText
1272 , wxCoord                           vX
1273 , wxCoord                           vY
1274 )
1275 {
1276     wxCoord                         vWidth;
1277     wxCoord                         vHeight;
1278
1279     DrawAnyText( rsText
1280                 ,vX
1281                 ,vY
1282                );
1283
1284     CalcBoundingBox(vX, vY);
1285     GetTextExtent(rsText, &vWidth, &vHeight);
1286     CalcBoundingBox((vX + vWidth), (vY + vHeight));
1287 } // end of wxDC::DoDrawText
1288
1289 void wxDC::DrawAnyText(
1290   const wxString&                   rsText
1291 , wxCoord                           vX
1292 , wxCoord                           vY
1293 )
1294 {
1295     int                             nOldBackground = 0;
1296     POINTL                          vPtlStart;
1297     LONG                            lHits;
1298     wxCoord                         vTextX = 0;
1299     wxCoord                         vTextY = 0;
1300
1301     //
1302     // prepare for drawing the text
1303     //
1304
1305     //
1306     // Set text color attributes
1307     //
1308     if (m_textForegroundColour.Ok())
1309     {
1310         SetTextColor( m_hPS
1311                      ,(int)m_textForegroundColour.GetPixel()
1312                     );
1313     }
1314
1315     if (m_textBackgroundColour.Ok())
1316     {
1317         nOldBackground = SetTextBkColor( m_hPS
1318                                         ,(int)m_textBackgroundColour.GetPixel()
1319                                        );
1320     }
1321     SetBkMode( m_hPS
1322               ,m_backgroundMode
1323              );
1324     GetTextExtent( rsText
1325                   ,&vTextX
1326                   ,&vTextY
1327                  );
1328     vPtlStart.x = vX;
1329     vPtlStart.y = OS2Y(vY,vTextY);
1330
1331     lHits = ::GpiCharStringAt( m_hPS
1332                               ,&vPtlStart
1333                               ,rsText.length()
1334                               ,(PCH)rsText.c_str()
1335                              );
1336     if (lHits != GPI_OK)
1337     {
1338         wxLogLastError(wxT("TextOut"));
1339     }
1340
1341     //
1342     // Restore the old parameters (text foreground colour may be left because
1343     // it never is set to anything else, but background should remain
1344     // transparent even if we just drew an opaque string)
1345     //
1346     if (m_textBackgroundColour.Ok())
1347             SetTextBkColor( m_hPS
1348                            ,nOldBackground
1349                           );
1350     SetBkMode( m_hPS
1351               ,wxTRANSPARENT
1352              );
1353 }
1354
1355 void wxDC::DoDrawRotatedText(
1356   const wxString&                   rsText
1357 , wxCoord                           vX
1358 , wxCoord                           vY
1359 , double                            dAngle
1360 )
1361 {
1362     if (dAngle == 0.0)
1363     {
1364         DoDrawText( rsText
1365                    ,vX
1366                    ,vY
1367                   );
1368     }
1369
1370    // TODO:
1371    /*
1372     if ( angle == 0.0 )
1373     {
1374         DoDrawText(text, x, y);
1375     }
1376     else
1377     {
1378         LOGFONT lf;
1379         wxFillLogFont(&lf, &m_font);
1380
1381         // GDI wants the angle in tenth of degree
1382         long angle10 = (long)(angle * 10);
1383         lf.lfEscapement = angle10;
1384         lf. lfOrientation = angle10;
1385
1386         HFONT hfont = ::CreateFontIndirect(&lf);
1387         if ( !hfont )
1388         {
1389             wxLogLastError("CreateFont");
1390         }
1391         else
1392         {
1393             HFONT hfontOld = ::SelectObject(GetHdc(), hfont);
1394
1395             DrawAnyText(text, x, y);
1396
1397             (void)::SelectObject(GetHdc(), hfontOld);
1398         }
1399
1400         // call the bounding box by adding all four vertices of the rectangle
1401         // containing the text to it (simpler and probably not slower than
1402         // determining which of them is really topmost/leftmost/...)
1403         wxCoord w, h;
1404         GetTextExtent(text, &w, &h);
1405
1406         double rad = DegToRad(angle);
1407
1408         // "upper left" and "upper right"
1409         CalcBoundingBox(x, y);
1410         CalcBoundingBox(x + w*cos(rad), y - h*sin(rad));
1411         CalcBoundingBox(x + h*sin(rad), y + h*cos(rad));
1412
1413         // "bottom left" and "bottom right"
1414         x += (wxCoord)(h*sin(rad));
1415         y += (wxCoord)(h*cos(rad));
1416         CalcBoundingBox(x, y);
1417         CalcBoundingBox(x + h*sin(rad), y + h*cos(rad));
1418     }
1419 */
1420 }
1421
1422 // ---------------------------------------------------------------------------
1423 // set GDI objects
1424 // ---------------------------------------------------------------------------
1425
1426 void wxDC::DoSelectPalette(
1427   bool                              bRealize
1428 )
1429 {
1430     //
1431     // Set the old object temporarily, in case the assignment deletes an object
1432     // that's not yet selected out.
1433     //
1434     if (m_hOldPalette)
1435     {
1436         m_hOldPalette = 0;
1437     }
1438
1439     if (m_palette.Ok())
1440     {
1441         HPALETTE                    hOldPal;
1442
1443         hOldPal = ::GpiSelectPalette((HDC) m_hPS, (HPALETTE) m_palette.GetHPALETTE());
1444         if (!m_hOldPalette)
1445             m_hOldPalette = (WXHPALETTE)hOldPal;
1446     }
1447 } // end of wxDC::DoSelectPalette
1448
1449 void wxDC::InitializePalette()
1450 {
1451     if (wxDisplayDepth() <= 8 )
1452     {
1453         //
1454         // Look for any window or parent that has a custom palette. If any has
1455         // one then we need to use it in drawing operations
1456         //
1457         wxWindow*                   pWin = m_pCanvas->GetAncestorWithCustomPalette();
1458
1459         m_hasCustomPalette = pWin && pWin->HasCustomPalette();
1460         if (m_hasCustomPalette)
1461         {
1462             m_palette = pWin->GetPalette();
1463
1464             //
1465             // turn on PM translation for this palette
1466             //
1467             DoSelectPalette();
1468         }
1469     }
1470 } // end of wxDC::InitializePalette
1471
1472 void wxDC::SetPalette(
1473   const wxPalette&                  rPalette
1474 )
1475 {
1476     if (m_hOldFont)
1477     {
1478         m_hOldFont = 0;
1479     }
1480     m_palette = rPalette;
1481     if (!rPalette.Ok())
1482     {
1483         if (m_hOldFont)
1484         {
1485             m_hOldFont = 0;
1486         }
1487     }
1488     HPALETTE                    hOldPal = ::GpiSelectPalette((HDC) m_hPS, (HPALETTE) m_palette.GetHPALETTE());
1489     if (!m_hOldPalette)
1490         m_hOldPalette = (WXHPALETTE)hOldPal;
1491 } // end of wxDC::SetPalette
1492
1493 void wxDC::SetFont(
1494   const wxFont&                     rFont
1495 )
1496 {
1497     //
1498     // Set the old object temporarily, in case the assignment deletes an object
1499     // that's not yet selected out.
1500     //
1501     if (m_hOldFont)
1502     {
1503         m_hOldFont = 0;
1504     }
1505     m_font = rFont;
1506     if (!rFont.Ok())
1507     {
1508         m_hOldFont = 0;
1509     }
1510
1511     m_font.SetPS(m_hPS); // this will realize the font
1512
1513     if (m_font.Ok())
1514     {
1515         HFONT                       hFont = m_font.GetResourceHandle();
1516         if (hFont == (HFONT) NULL)
1517         {
1518             wxLogDebug(wxT("::SelectObject failed in wxDC::SetFont."));
1519         }
1520         if (!m_hOldFont)
1521             m_hOldFont = (WXHFONT) hFont;
1522     }
1523 } // end of wxDC::SetFont
1524
1525 void wxDC::SetPen(
1526   const wxPen&                      rPen
1527 )
1528 {
1529     wxCHECK_RET( Ok(), wxT("invalid window dc") );
1530
1531     if (m_pen == rPen)
1532         return;
1533     m_pen = rPen;
1534     if (!m_pen.Ok())
1535         return;
1536
1537     if (m_hOldPen)
1538         m_hOldPen = 0L;
1539     m_pen = rPen;
1540
1541     if (!m_pen.Ok())
1542     {
1543         if (m_hOldPen)
1544         {
1545             m_pen.SetPS((HPS)m_hOldPen);
1546         }
1547         m_hOldPen = 0L;
1548     }
1549
1550     if (m_pen.Ok())
1551     {
1552         if (m_pen.GetResourceHandle())
1553         {
1554             m_pen.SetPS(m_hPS);
1555             if (!m_hOldPen)
1556                 m_hOldPen = m_pen.GetPS();
1557         }
1558     }
1559 }
1560
1561 void wxDC::SetBrush(
1562   const wxBrush&                    rBrush
1563 )
1564 {
1565     wxCHECK_RET( Ok(), wxT("invalid window dc") );
1566
1567     if (m_hOldBrush)
1568         m_hOldBrush = 0L;
1569     m_brush = rBrush;
1570     if (!m_brush.Ok())
1571     if (m_brush == rBrush)
1572         return;
1573     if (!m_brush.Ok())
1574         if (m_hOldBrush)
1575             m_hOldBrush = 0L;
1576
1577     if (!m_brush.Ok())
1578     {
1579         if (m_hOldBrush)
1580         {
1581             m_brush.SetPS((HPS)m_hOldBrush);
1582         }
1583         m_hOldBrush = 0L;
1584     }
1585
1586     if (m_brush.Ok())
1587     {
1588         if (m_brush.GetResourceHandle())
1589         {
1590             m_brush.SetPS(m_hPS);
1591             if (!m_hOldBrush)
1592                 m_hOldBrush = (WXHWND)m_brush.GetPS();
1593         }
1594     }
1595 } // end of wxDC::SetBrush
1596
1597 void wxDC::SetBackground(
1598   const wxBrush&                    rBrush
1599 )
1600 {
1601     m_backgroundBrush = rBrush;
1602     if (!m_backgroundBrush.Ok())
1603         return;
1604     if (m_pCanvas)
1605     {
1606         bool                        bCustomColours = TRUE;
1607
1608         //
1609         // If we haven't specified wxUSER_COLOURS, don't allow the panel/dialog box to
1610         // change background colours from the control-panel specified colours.
1611         //
1612         if (m_pCanvas->IsKindOf(CLASSINFO(wxWindow)) &&
1613             ((m_pCanvas->GetWindowStyleFlag() & wxUSER_COLOURS) != wxUSER_COLOURS))
1614             bCustomColours = FALSE;
1615         if (bCustomColours)
1616         {
1617             if (m_backgroundBrush.GetStyle()==wxTRANSPARENT)
1618             {
1619                 m_pCanvas->SetTransparent(TRUE);
1620             }
1621             else
1622             {
1623                 //
1624                 // Setting the background brush of a DC
1625                 // doesn't affect the window background colour. However,
1626                 // I'm leaving in the transparency setting because it's needed by
1627                 // various controls (e.g. wxStaticText) to determine whether to draw
1628                 // transparently or not. TODO: maybe this should be a new function
1629                 // wxWindow::SetTransparency(). Should that apply to the child itself, or the
1630                 // parent?
1631                 // m_canvas->SetBackgroundColour(m_backgroundBrush.GetColour());
1632                 //
1633                 m_pCanvas->SetTransparent(FALSE);
1634             }
1635         }
1636     }
1637     COLORREF                        vNewColor = m_backgroundBrush.GetColour().GetPixel();
1638     (void)::GpiSetBackColor((HPS)m_hPS, (LONG)vNewColor);
1639 } // end of wxDC::SetBackground
1640
1641 void wxDC::SetBackgroundMode(
1642   int                               nMode
1643 )
1644 {
1645     m_backgroundMode = nMode;
1646 } // end of wxDC::SetBackgroundMode
1647
1648 void wxDC::SetLogicalFunction(
1649   int                               nFunction
1650 )
1651 {
1652     m_logicalFunction = nFunction;
1653     SetRop((WXHDC)m_hDC);
1654 } // wxDC::SetLogicalFunction
1655
1656 void wxDC::SetRop(
1657   WXHDC                             hDC
1658 )
1659 {
1660     if (!hDC || m_logicalFunction < 0)
1661         return;
1662
1663     LONG                            lCRop;
1664     switch (m_logicalFunction)
1665     {
1666         case wxXOR:
1667             lCRop = FM_XOR;
1668             break;
1669
1670         case wxINVERT:
1671             lCRop = FM_INVERT;
1672             break;
1673
1674         case wxOR_REVERSE:
1675             lCRop = FM_MERGESRCNOT;
1676             break;
1677
1678         case wxAND_REVERSE:
1679             lCRop = FM_NOTMASKSRC;
1680             break;
1681
1682         case wxCLEAR:
1683             lCRop = FM_ONE;
1684             break;
1685
1686         case wxSET:
1687             lCRop = FM_ZERO;
1688             break;
1689
1690         case wxSRC_INVERT:
1691             lCRop = FM_MERGENOTSRC;
1692             break;
1693
1694         case wxOR_INVERT:
1695             lCRop = FM_MERGESRCNOT;
1696             break;
1697
1698         case wxAND:
1699             lCRop = FM_AND;
1700             break;
1701
1702         case wxOR:
1703             lCRop = FM_OR;
1704             break;
1705
1706         case wxAND_INVERT:
1707             lCRop = FM_SUBTRACT;
1708             break;
1709
1710         case wxEQUIV:
1711         case wxNAND:
1712         case wxCOPY:
1713         default:
1714             lCRop = FM_OVERPAINT;
1715             break;
1716     }
1717     ::GpiSetMix((HPS)hDC, lCRop);
1718 } // end of wxDC::SetRop
1719
1720 bool wxDC::StartDoc(
1721   const wxString&                   rsMessage
1722 )
1723 {
1724     // We might be previewing, so return TRUE to let it continue.
1725     return TRUE;
1726 } // end of wxDC::StartDoc
1727
1728 void wxDC::EndDoc()
1729 {
1730 } // end of wxDC::EndDoc
1731
1732 void wxDC::StartPage()
1733 {
1734 } // end of wxDC::StartPage
1735
1736 void wxDC::EndPage()
1737 {
1738 } // end of wxDC::EndPage
1739
1740 // ---------------------------------------------------------------------------
1741 // text metrics
1742 // ---------------------------------------------------------------------------
1743
1744 wxCoord wxDC::GetCharHeight() const
1745 {
1746     FONTMETRICS                     vFM; // metrics structure
1747
1748     ::GpiQueryFontMetrics( m_hPS
1749                           ,sizeof(FONTMETRICS)
1750                           ,&vFM
1751                          );
1752     return YDEV2LOGREL(vFM.lXHeight);
1753 }
1754
1755 wxCoord wxDC::GetCharWidth() const
1756 {
1757     FONTMETRICS                     vFM; // metrics structure
1758
1759     ::GpiQueryFontMetrics( m_hPS
1760                           ,sizeof(FONTMETRICS)
1761                           ,&vFM
1762                          );
1763     return XDEV2LOGREL(vFM.lAveCharWidth);
1764 }
1765
1766 void wxDC::DoGetTextExtent(
1767   const wxString&                   rsString
1768 , wxCoord*                          pvX
1769 , wxCoord*                          pvY
1770 , wxCoord*                          pvDescent
1771 , wxCoord*                          pvExternalLeading
1772 , wxFont*                           pTheFont
1773 ) const
1774 {
1775     POINTL                          avPoint[TXTBOX_COUNT];
1776     POINTL                          vPtMin;
1777     POINTL                          vPtMax;
1778     int                             i;
1779     int                             l;
1780     FONTMETRICS                     vFM; // metrics structure
1781     BOOL                            bRc;
1782     char*                           pStr;
1783     ERRORID                         vErrorCode; // last error id code
1784     wxFont*                         pFontToUse = (wxFont*)pTheFont;
1785
1786     char                            zMsg[128]; // DEBUG
1787     wxString                        sError;
1788
1789     if (!pFontToUse)
1790         pFontToUse = (wxFont*)&m_font;
1791     l = rsString.length();
1792     pStr = (PCH) rsString.c_str();
1793
1794     //
1795     // In world coordinates.
1796     //
1797     bRc = ::GpiQueryTextBox( m_hPS
1798                             ,l
1799                             ,pStr
1800                             ,TXTBOX_COUNT // return maximum information
1801                             ,avPoint      // array of coordinates points
1802                            );
1803     if(!bRc)
1804     {
1805        vErrorCode = ::WinGetLastError(wxGetInstance());
1806        sError = wxPMErrorToStr(vErrorCode);
1807        // DEBUG
1808        sprintf(zMsg, "GpiQueryTextBox for %s: failed with Error: %x - %s", pStr, vErrorCode, sError.c_str());
1809        (void)wxMessageBox( "wxWindows Menu sample"
1810                           ,zMsg
1811                           ,wxICON_INFORMATION
1812                          );
1813     }
1814
1815     vPtMin.x = avPoint[0].x;
1816     vPtMax.x = avPoint[0].x;
1817     vPtMin.y = avPoint[0].y;
1818     vPtMax.y = avPoint[0].y;
1819     for (i = 1; i < 4; i++)
1820     {
1821         if(vPtMin.x > avPoint[i].x) vPtMin.x = avPoint[i].x;
1822         if(vPtMin.y > avPoint[i].y) vPtMin.y = avPoint[i].y;
1823         if(vPtMax.x < avPoint[i].x) vPtMax.x = avPoint[i].x;
1824         if(vPtMax.y < avPoint[i].y) vPtMax.y = avPoint[i].y;
1825     }
1826     ::GpiQueryFontMetrics( m_hPS
1827                           ,sizeof(FONTMETRICS)
1828                           ,&vFM
1829                          );
1830
1831     if (pvX)
1832         *pvX = (wxCoord)(vPtMax.x - vPtMin.x + 1);
1833     if (pvY)
1834         *pvY = (wxCoord)(vPtMax.y - vPtMin.y + 1);
1835     if (pvDescent)
1836         *pvDescent = vFM.lMaxDescender;
1837     if (pvExternalLeading)
1838         *pvExternalLeading = vFM.lExternalLeading;
1839 }
1840
1841 void wxDC::SetMapMode(
1842   int                               nMode
1843 )
1844 {
1845     int                             nPixelWidth = 0;
1846     int                             nPixelHeight = 0;
1847     int                             nMmWidth = 1;
1848     int                             nMmHeight = 1;
1849     LONG                            lArray[CAPS_VERTICAL_RESOLUTION];
1850
1851     m_mappingMode = nMode;
1852
1853     if(::DevQueryCaps( m_hDC
1854                       ,CAPS_FAMILY
1855                       ,CAPS_VERTICAL_RESOLUTION
1856                       ,lArray
1857                      ))
1858     {
1859         LONG                        lHorzRes;
1860         LONG                        lVertRes;
1861
1862         nPixelWidth    = lArray[CAPS_WIDTH];
1863         nPixelHeight   = lArray[CAPS_HEIGHT];
1864         lHorzRes  = lArray[CAPS_HORIZONTAL_RESOLUTION]; // returns pel/meter
1865         lVertRes  = lArray[CAPS_VERTICAL_RESOLUTION];   // returns pel/meter
1866         nMmWidth  = (lHorzRes/1000) * nPixelWidth;
1867         nMmWidth = (lVertRes/1000) * nPixelHeight;
1868     }
1869     if ((nPixelWidth == 0) || (nPixelHeight == 0) || (nMmWidth == 0) || (nMmHeight == 0))
1870     {
1871         return;
1872     }
1873
1874     double                          dMm2pixelsX = nPixelWidth/nMmWidth;
1875     double                          dMm2pixelsY = nPixelHeight/nMmHeight;
1876
1877     switch (nMode)
1878     {
1879         case wxMM_TWIPS:
1880             m_logicalScaleX = (twips2mm * dMm2pixelsX);
1881             m_logicalScaleY = (twips2mm * dMm2pixelsY);
1882             break;
1883
1884         case wxMM_POINTS:
1885             m_logicalScaleX = (pt2mm * dMm2pixelsX);
1886             m_logicalScaleY = (pt2mm * dMm2pixelsY);
1887             break;
1888
1889         case wxMM_METRIC:
1890             m_logicalScaleX = dMm2pixelsX;
1891             m_logicalScaleY = dMm2pixelsY;
1892             break;
1893
1894         case wxMM_LOMETRIC:
1895             m_logicalScaleX = (dMm2pixelsX/10.0);
1896             m_logicalScaleY = (dMm2pixelsY/10.0);
1897             break;
1898
1899         case wxMM_TEXT:
1900         default:
1901             m_logicalScaleX = 1.0;
1902             m_logicalScaleY = 1.0;
1903             break;
1904     }
1905     SIZEL                           vSize;
1906     ULONG                           ulOptions;
1907
1908     ulOptions = ::GpiQueryPS(m_hPS, &vSize);
1909     if (!ulOptions & PU_ARBITRARY)
1910     {
1911         ulOptions = PU_ARBITRARY | GPIF_DEFAULT;
1912         ::GpiSetPS(m_hPS, &vSize, ulOptions);
1913     }
1914     m_nWindowExtX = (int)MS_XDEV2LOG(VIEWPORT_EXTENT);
1915     m_nWindowExtY = (int)MS_YDEV2LOG(VIEWPORT_EXTENT);
1916     // ????
1917 }; // end of wxDC::SetMapMode
1918
1919 void wxDC::SetUserScale(
1920   double                            dX
1921 , double                            dY
1922 )
1923 {
1924     m_userScaleX = dX;
1925     m_userScaleY = dY;
1926
1927     SetMapMode(m_mappingMode);
1928 } // end of wxDC::SetUserScale
1929
1930 void wxDC::SetAxisOrientation(
1931   bool                              bXLeftRight
1932 , bool                              bYBottomUp
1933 )
1934 {
1935     m_signX = bXLeftRight ? 1 : -1;
1936     m_signY = bYBottomUp ? -1 : 1;
1937
1938     SetMapMode(m_mappingMode);
1939 } // end of wxDC::SetAxisOrientation
1940
1941 void wxDC::SetSystemScale(
1942   double                            dX
1943 , double                            dY
1944 )
1945 {
1946     m_scaleX = dX;
1947     m_scaleY = dY;
1948
1949     SetMapMode(m_mappingMode);
1950 } // end of wxDC::SetSystemScale
1951
1952 void wxDC::SetLogicalOrigin(
1953   wxCoord                           vX
1954 , wxCoord                           vY
1955 )
1956 {
1957     RECTL                           vRect;
1958
1959     ::GpiQueryPageViewport( m_hPS
1960                            ,&vRect
1961                           );
1962     vRect.xRight -= vX;
1963     vRect.yTop += vY;
1964     vRect.xLeft = vX;
1965     vRect.yBottom = vY;
1966     ::GpiSetPageViewport( m_hPS
1967                          ,&vRect
1968                         );
1969 }; // end of wxDC::SetLogicalOrigin
1970
1971 void wxDC::SetDeviceOrigin(
1972   wxCoord                           vX
1973 , wxCoord                           vY
1974 )
1975 {
1976     RECTL                           vRect;
1977
1978     m_deviceOriginX = vX;
1979     m_deviceOriginY = vY;
1980     ::GpiQueryPageViewport( m_hPS
1981                            ,&vRect
1982                           );
1983     vRect.xLeft += vX;
1984     vRect.xRight += vX;
1985     vRect.yBottom -= vY;
1986     vRect.yTop -= vY;
1987     ::GpiSetPageViewport( m_hPS
1988                          ,&vRect
1989                         );
1990 }; // end of wxDC::SetDeviceOrigin
1991
1992 // ---------------------------------------------------------------------------
1993 // coordinates transformations
1994 // ---------------------------------------------------------------------------
1995
1996 wxCoord wxDCBase::DeviceToLogicalX(wxCoord x) const
1997 {
1998     return (wxCoord) (((x) - m_deviceOriginX)/(m_logicalScaleX*m_userScaleX*m_signX*m_scaleX) - m_logicalOriginX);
1999 }
2000
2001 wxCoord wxDCBase::DeviceToLogicalXRel(wxCoord x) const
2002 {
2003         // axis orientation is not taken into account for conversion of a distance
2004     return (wxCoord) ((x)/(m_logicalScaleX*m_userScaleX*m_scaleX));
2005 }
2006
2007 wxCoord wxDCBase::DeviceToLogicalY(wxCoord y) const
2008 {
2009     return (wxCoord) (((y) - m_deviceOriginY)/(m_logicalScaleY*m_userScaleY*m_signY*m_scaleY) - m_logicalOriginY);
2010 }
2011
2012 wxCoord wxDCBase::DeviceToLogicalYRel(wxCoord y) const
2013 {
2014         // axis orientation is not taken into account for conversion of a distance
2015     return (wxCoord) ((y)/(m_logicalScaleY*m_userScaleY*m_scaleY));
2016 }
2017
2018 wxCoord wxDCBase::LogicalToDeviceX(wxCoord x) const
2019 {
2020     return (wxCoord) ((x - m_logicalOriginX)*m_logicalScaleX*m_userScaleX*m_signX*m_scaleX + m_deviceOriginX);
2021 }
2022
2023 wxCoord wxDCBase::LogicalToDeviceXRel(wxCoord x) const
2024 {
2025         // axis orientation is not taken into account for conversion of a distance
2026     return (wxCoord) (x*m_logicalScaleX*m_userScaleX*m_scaleX);
2027 }
2028
2029 wxCoord wxDCBase::LogicalToDeviceY(wxCoord y) const
2030 {
2031     return (wxCoord) ((y - m_logicalOriginY)*m_logicalScaleY*m_userScaleY*m_signY*m_scaleY + m_deviceOriginY);
2032 }
2033
2034 wxCoord wxDCBase::LogicalToDeviceYRel(wxCoord y) const
2035 {
2036         // axis orientation is not taken into account for conversion of a distance
2037     return (wxCoord) (y*m_logicalScaleY*m_userScaleY*m_scaleY);
2038 }
2039
2040 // ---------------------------------------------------------------------------
2041 // bit blit
2042 // ---------------------------------------------------------------------------
2043
2044 bool wxDC::DoBlit(
2045   wxCoord                           vXdest
2046 , wxCoord                           vYdest
2047 , wxCoord                           vWidth
2048 , wxCoord                           vHeight
2049 , wxDC*                             pSource
2050 , wxCoord                           vXsrc
2051 , wxCoord                           vYsrc
2052 , int                               nRop
2053 , bool                              bUseMask
2054 , wxCoord                           vXsrcMask
2055 , wxCoord                           vYsrcMask
2056 )
2057 {
2058     wxMask*                         pMask = NULL;
2059     CHARBUNDLE                      vCbnd;
2060     COLORREF                        vOldTextColor;
2061     COLORREF                        vOldBackground = ::GpiQueryBackColor(m_hPS);
2062
2063     if (bUseMask)
2064     {
2065         const wxBitmap&             rBmp = pSource->m_vSelectedBitmap;
2066
2067         pMask = rBmp.GetMask();
2068         if (!(rBmp.Ok() && pMask && pMask->GetMaskBitmap()))
2069         {
2070             bUseMask = FALSE;
2071         }
2072     }
2073
2074     ::GpiQueryAttrs( m_hPS
2075                     ,PRIM_CHAR
2076                     ,CBB_COLOR
2077                     ,&vCbnd
2078                    );
2079     vOldTextColor = (COLORREF)vCbnd.lColor;
2080
2081     if (m_textForegroundColour.Ok())
2082     {
2083         vCbnd.lColor = (LONG)m_textForegroundColour.GetPixel();
2084         ::GpiSetAttrs( m_hPS           // presentation-space handle
2085                       ,PRIM_CHAR       // Char primitive.
2086                       ,CBB_COLOR       // sets color.
2087                       ,0
2088                       ,&vCbnd          // buffer for attributes.
2089                      );
2090     }
2091     if (m_textBackgroundColour.Ok())
2092     {
2093         ::GpiSetBackColor(m_hPS, (LONG)m_textBackgroundColour.GetPixel());
2094     }
2095
2096     LONG                            lRop = ROP_SRCCOPY;
2097
2098     switch (nRop)
2099     {
2100         case wxXOR:          lRop = ROP_SRCINVERT;        break;
2101         case wxINVERT:       lRop = ROP_DSTINVERT;        break;
2102         case wxOR_REVERSE:   lRop = 0x00DD0228;           break;
2103         case wxAND_REVERSE:  lRop = ROP_SRCERASE;         break;
2104         case wxCLEAR:        lRop = ROP_ZERO;             break;
2105         case wxSET:          lRop = ROP_ONE;              break;
2106         case wxOR_INVERT:    lRop = ROP_MERGEPAINT;       break;
2107         case wxAND:          lRop = ROP_SRCAND;           break;
2108         case wxOR:           lRop = ROP_SRCPAINT;         break;
2109         case wxEQUIV:        lRop = 0x00990066;           break;
2110         case wxNAND:         lRop = 0x007700E6;           break;
2111         case wxAND_INVERT:   lRop = 0x00220326;           break;
2112         case wxCOPY:         lRop = ROP_SRCCOPY;          break;
2113         case wxNO_OP:        lRop = ROP_NOTSRCERASE;      break;
2114         case wxSRC_INVERT:   lRop = ROP_SRCINVERT;        break;
2115         case wxNOR:          lRop = ROP_NOTSRCCOPY;       break;
2116         default:
2117            wxFAIL_MSG( wxT("unsupported logical function") );
2118            return FALSE;
2119     }
2120
2121     bool                            bSuccess;
2122
2123     if (bUseMask)
2124     {
2125         //
2126         // Blit bitmap with mask
2127         //
2128
2129         //
2130         // Create a temp buffer bitmap and DCs/PSs to access it and the mask
2131         //
2132         HDC                             hDCMask;
2133         HDC                             hDCBuffer;
2134         HPS                             hPSMask;
2135         HPS                             hPSBuffer;
2136         DEVOPENSTRUC                    vDOP = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
2137         BITMAPINFOHEADER2               vBmpHdr;
2138         HBITMAP                         hBufBitmap;
2139         SIZEL                           vSize = {0, 0};
2140         LONG                            rc;
2141
2142         memset(&vBmpHdr, 0, sizeof(BITMAPINFOHEADER2));
2143         vBmpHdr.cbFix     = sizeof(BITMAPINFOHEADER2);
2144         vBmpHdr.cx        = vWidth;
2145         vBmpHdr.cy        = vHeight;
2146         vBmpHdr.cPlanes   = 1;
2147         vBmpHdr.cBitCount = 24;
2148
2149 #if wxUSE_DC_CACHEING
2150         if (TRUE)
2151         {
2152             //
2153             // create a temp buffer bitmap and DCs to access it and the mask
2154             //
2155             wxDCCacheEntry*         pDCCacheEntry1    = FindDCInCache( NULL
2156                                                                       ,pSource->GetHPS()
2157                                                                      );
2158             wxDCCacheEntry*         pDCCacheEntry2    = FindDCInCache( pDCCacheEntry1
2159                                                                       ,GetHPS()
2160                                                                      );
2161             wxDCCacheEntry*         pBitmapCacheEntry = FindBitmapInCache( GetHPS()
2162                                                                           ,vWidth
2163                                                                           ,vHeight
2164                                                                          );
2165
2166             hPSMask = pDCCacheEntry1->m_hPS;
2167             hDCBuffer = (HDC)pDCCacheEntry2->m_hPS;
2168             hBufBitmap = (HBITMAP)pBitmapCacheEntry->m_hBitmap;
2169         }
2170         else
2171 #endif
2172         {
2173             hDCMask = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDOP, NULLHANDLE);
2174             hDCBuffer = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDOP, NULLHANDLE);
2175             hPSMask = ::GpiCreatePS(vHabmain, hDCMask, &vSize, PU_PELS | GPIT_MICRO | GPIA_ASSOC);
2176             hPSBuffer = ::GpiCreatePS(vHabmain, hDCBuffer, &vSize, PU_PELS | GPIT_MICRO | GPIA_ASSOC);
2177             hBufBitmap = ::GpiCreateBitmap(GetHPS(), &vBmpHdr, 0L, NULL, NULL);
2178         }
2179
2180         POINTL                          aPoint1[4] = { 0, 0
2181                                                       ,vWidth, vHeight
2182                                                       ,vXdest, vYdest
2183                                                       ,vXdest + vWidth, vYdest + vHeight
2184                                                      };
2185         POINTL                          aPoint2[4] = { 0, 0
2186                                                       ,vWidth, vHeight
2187                                                       ,vXsrc, vYsrc
2188                                                       ,vXsrc + vWidth, vYsrc + vHeight
2189                                                      };
2190         POINTL                          aPoint3[4] = { vXdest, vYdest
2191                                                       ,vXdest + vWidth, vYdest + vHeight
2192                                                       ,vXsrc, vYsrc
2193                                                       ,vXsrc + vWidth, vYsrc + vHeight
2194                                                      };
2195         POINTL                          aPoint4[4] = { vXdest, vYdest
2196                                                       ,vXdest + vWidth, vYdest + vHeight
2197                                                       ,0, 0
2198                                                       ,vWidth, vHeight
2199                                                      };
2200         ::GpiSetBitmap(hPSMask, (HBITMAP) pMask->GetMaskBitmap());
2201         ::GpiSetBitmap(hPSBuffer, (HBITMAP) hBufBitmap);
2202
2203         //
2204         // Copy dest to buffer
2205         //
2206         rc = ::GpiBitBlt( hPSBuffer
2207                          ,GetHPS()
2208                          ,4L
2209                          ,aPoint1
2210                          ,ROP_SRCCOPY
2211                          ,BBO_IGNORE
2212                         );
2213         if (rc == GPI_ERROR)
2214         {
2215             wxLogLastError(wxT("BitBlt"));
2216         }
2217
2218         //
2219         // Copy src to buffer using selected raster op
2220         //
2221         rc = ::GpiBitBlt( hPSBuffer
2222                          ,GetHPS()
2223                          ,4L
2224                          ,aPoint2
2225                          ,lRop
2226                          ,BBO_IGNORE
2227                         );
2228         if (rc == GPI_ERROR)
2229         {
2230             wxLogLastError(wxT("BitBlt"));
2231         }
2232
2233         //
2234         // Set masked area in buffer to BLACK (pixel value 0)
2235         //
2236         COLORREF                        vPrevBkCol = ::GpiQueryBackColor(GetHPS());
2237         COLORREF                        vPrevCol = ::GpiQueryColor(GetHPS());
2238
2239         ::GpiSetBackColor(GetHPS(), OS2RGB(255, 255, 255));
2240         ::GpiSetColor(GetHPS(), OS2RGB(0, 0, 0));
2241
2242         rc = ::GpiBitBlt( hPSBuffer
2243                          ,hPSMask
2244                          ,4L
2245                          ,aPoint2
2246                          ,ROP_SRCAND
2247                          ,BBO_IGNORE
2248                         );
2249         if (rc == GPI_ERROR)
2250         {
2251             wxLogLastError(wxT("BitBlt"));
2252         }
2253
2254         //
2255         // Set unmasked area in dest to BLACK
2256         //
2257         ::GpiSetBackColor(GetHPS(), OS2RGB(0, 0, 0));
2258         ::GpiSetColor(GetHPS(), OS2RGB(255, 255, 255));
2259         rc = ::GpiBitBlt( GetHPS()
2260                          ,hPSMask
2261                          ,4L
2262                          ,aPoint3
2263                          ,ROP_SRCAND
2264                          ,BBO_IGNORE
2265                         );
2266         if (rc == GPI_ERROR)
2267         {
2268             wxLogLastError(wxT("BitBlt"));
2269         }
2270
2271         //
2272         // Restore colours to original values
2273         //
2274         ::GpiSetBackColor(GetHPS(), vPrevBkCol);
2275         ::GpiSetColor(GetHPS(), vPrevCol);
2276
2277         //
2278         // OR buffer to dest
2279         //
2280         rc = ::GpiBitBlt( GetHPS()
2281                          ,hPSMask
2282                          ,4L
2283                          ,aPoint4
2284                          ,ROP_SRCPAINT
2285                          ,BBO_IGNORE
2286                         );
2287         if (rc == GPI_ERROR)
2288         {
2289             bSuccess = FALSE;
2290             wxLogLastError(wxT("BitBlt"));
2291         }
2292
2293         //
2294         // Tidy up temporary DCs and bitmap
2295         //
2296         ::GpiSetBitmap(hPSMask, NULLHANDLE);
2297         ::GpiSetBitmap(hPSBuffer, NULLHANDLE);
2298 #if !wxUSE_DC_CACHEING
2299         ::GpiDestroyPS(hPSMask);
2300         ::GpiDestroyPS(hPSBuffer);
2301         ::DevCloseDC(hDCMask);
2302         ::DevCloseDC(hDCBuffer);
2303         ::GpiDeleteBitmap(hBufBitmap);
2304 #endif
2305         bSuccess = TRUE;
2306     }
2307     else // no mask, just BitBlt() it
2308     {
2309         POINTL                          aPoint[4] = { vXdest, vYdest
2310                                                      ,vXdest + vWidth, vYdest + vHeight
2311                                                      ,vXsrc, vYsrc
2312                                                      ,vXsrc + vWidth, vYsrc + vHeight
2313                                                     };
2314
2315         bSuccess = (::GpiBitBlt( m_hPS
2316                                 ,pSource->GetHPS()
2317                                 ,4L
2318                                 ,aPoint
2319                                 ,lRop
2320                                 ,BBO_IGNORE
2321                                ) != GPI_ERROR);
2322         if (!bSuccess )
2323         {
2324             wxLogLastError(wxT("BitBlt"));
2325         }
2326     }
2327     vCbnd.lColor = (LONG)vOldTextColor;
2328     ::GpiSetAttrs( m_hPS           // presentation-space handle
2329                   ,PRIM_CHAR       // Char primitive.
2330                   ,CBB_COLOR       // sets color.
2331                   ,0
2332                   ,&vCbnd          // buffer for attributes.
2333                  );
2334     ::GpiSetBackColor(m_hPS, (LONG)vOldBackground);
2335     return bSuccess;
2336 }
2337
2338 void wxDC::DoGetSize(
2339   int*                              pnWidth
2340 , int*                              pnHeight
2341 ) const
2342 {
2343     LONG                            lArray[CAPS_HEIGHT];
2344
2345     if(::DevQueryCaps( m_hDC
2346                       ,CAPS_FAMILY
2347                       ,CAPS_HEIGHT
2348                       ,lArray
2349                      ))
2350     {
2351         *pnWidth  = lArray[CAPS_WIDTH];
2352         *pnHeight = lArray[CAPS_HEIGHT];
2353     }
2354 }; // end of wxDC::DoGetSize(
2355
2356 void wxDC::DoGetSizeMM(
2357   int*                              pnWidth
2358 , int*                              pnHeight
2359 ) const
2360 {
2361     LONG                            lArray[CAPS_VERTICAL_RESOLUTION];
2362
2363     if(::DevQueryCaps( m_hDC
2364                       ,CAPS_FAMILY
2365                       ,CAPS_VERTICAL_RESOLUTION
2366                       ,lArray
2367                      ))
2368     {
2369         int                         nWidth;
2370         int                         nHeight;
2371         int                         nHorzRes;
2372         int                         nVertRes;
2373
2374         nWidth    = lArray[CAPS_WIDTH];
2375         nHeight   = lArray[CAPS_HEIGHT];
2376         nHorzRes  = lArray[CAPS_HORIZONTAL_RESOLUTION]; // returns pel/meter
2377         nVertRes  = lArray[CAPS_VERTICAL_RESOLUTION];   // returns pel/meter
2378         nWidth  = (nHorzRes/1000) * nWidth;
2379         nHeight = (nVertRes/1000) * nHeight;
2380     }
2381 }; // end of wxDC::DoGetSizeMM
2382
2383 wxSize wxDC::GetPPI() const
2384 {
2385     LONG                            lArray[CAPS_VERTICAL_RESOLUTION];
2386     int                             nWidth;
2387     int                             nHeight;
2388
2389     if(::DevQueryCaps( m_hDC
2390                       ,CAPS_FAMILY
2391                       ,CAPS_VERTICAL_RESOLUTION
2392                       ,lArray
2393                      ))
2394     {
2395         int                         nPelWidth;
2396         int                         nPelHeight;
2397         int                         nHorzRes;
2398         int                         nVertRes;
2399
2400         nPelWidth  = lArray[CAPS_WIDTH];
2401         nPelHeight = lArray[CAPS_HEIGHT];
2402         nHorzRes   = lArray[CAPS_HORIZONTAL_RESOLUTION]; // returns pel/meter
2403         nVertRes   = lArray[CAPS_VERTICAL_RESOLUTION];   // returns pel/meter
2404         nWidth   = (nHorzRes/39.3) * nPelWidth;
2405         nHeight  = (nVertRes/39.3) * nPelHeight;
2406     }
2407     return (wxSize(nWidth,nHeight));
2408 } // end of wxDC::GetPPI
2409
2410 void wxDC::SetLogicalScale(
2411   double                            dX
2412 , double                            dY
2413 )
2414 {
2415     m_logicalScaleX = dX;
2416     m_logicalScaleY = dY;
2417 }; // end of wxDC::SetLogicalScale
2418
2419 #if WXWIN_COMPATIBILITY
2420 void wxDC::DoGetTextExtent(const wxString& string, float *x, float *y,
2421                          float *descent, float *externalLeading,
2422                          wxFont *theFont, bool use16bit) const
2423 {
2424     wxCoord x1, y1, descent1, externalLeading1;
2425     GetTextExtent(string, & x1, & y1, & descent1, & externalLeading1, theFont, use16bit);
2426     *x = x1; *y = y1;
2427     if (descent)
2428         *descent = descent1;
2429     if (externalLeading)
2430         *externalLeading = externalLeading1;
2431 }
2432 #endif
2433