src/os2/dc.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        dc.cpp
   3 // Purpose:     wxDC class
   4 // Author:      David Webster
   5 // Modified by:
   6 // Created:     10/14/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) David Webster
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifndef WX_PRECOMP
  16     #include "wx/window.h"
  17     #include "wx/dc.h"
  18     #include "wx/utils.h"
  19     #include "wx/dialog.h"
  20     #include "wx/app.h"
  21     #include "wx/bitmap.h"
  22     #include "wx/dcmemory.h"
  23     #include "wx/log.h"
  24     #include "wx/icon.h"
  25     #include "wx/msgdlg.h"
  26     #include "wx/module.h"
  27 #endif
  28
  29 #include "wx/dcprint.h"
  30
  31 #include <string.h>
  32 #include <math.h>
  33
  34 #include "wx/os2/private.h"
  35
  36     IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject)
  37
  38 //
  39 // wxWindows uses the Microsoft convention that the origin is the UPPER left.
  40 // Native OS/2 however in the GPI and PM define the origin as the LOWER left.
  41 // In order to map OS/2 GPI/PM y coordinates to wxWindows coordinates we must
  42 // perform the following transformation:
  43 //
  44 // Parent object height:     POBJHEIGHT
  45 // Desried origin:           WXORIGINY
  46 // Object to place's height: OBJHEIGHT
  47 //
  48 // To get the OS2 position from the wxWindows one:
  49 //
  50 // OS2Y = POBJHEIGHT - (WXORIGINY + OBJHEIGHT)
  51 //
  52 // For OS/2 wxDC's we will always determine m_vRclPaint as the size of the
  53 // OS/2 Presentation Space associated with the device context.  y is the
  54 // desired application's y coordinate of the origin in wxWindows space.
  55 // objy is the height of the object we are going to draw.
  56 //
  57 #define OS2Y(y, objy) ((m_vRclPaint.yTop - m_vRclPaint.yBottom) - (y + objy))
  58
  59 // ---------------------------------------------------------------------------
  60 // constants
  61 // ---------------------------------------------------------------------------
  62
  63 static const int VIEWPORT_EXTENT = 1000;
  64
  65 static const int MM_POINTS = 9;
  66 static const int MM_METRIC = 10;
  67
  68 // usually this is defined in math.h
  69 #ifndef M_PI
  70     static const double M_PI = 3.14159265358979323846;
  71 #endif // M_PI
  72
  73 // ---------------------------------------------------------------------------
  74 // private functions
  75 // ---------------------------------------------------------------------------
  76
  77 // convert degrees to radians
  78 static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
  79
  80 int SetTextColor(
  81   HPS                               hPS
  82 , int                               nForegroundColour
  83 )
  84 {
  85     CHARBUNDLE                      vCbnd;
  86
  87     vCbnd.lColor =  nForegroundColour;
  88     ::GpiSetAttrs( hPS       // presentation-space handle
  89                   ,PRIM_CHAR // Char primitive.
  90                   ,CBB_COLOR // sets color.
  91                   ,0         //
  92                   ,&vCbnd    // buffer for attributes.
  93                  );
  94     return 0;
  95 }
  96
  97 int QueryTextBkColor(
  98   HPS                               hPS
  99 )
 100 {
 101     CHARBUNDLE                      vCbnd;
 102
 103     ::GpiQueryAttrs( hPS            // presentation-space handle
 104                     ,PRIM_CHAR      // Char primitive.
 105                     ,CBB_BACK_COLOR // Background color.
 106                     ,&vCbnd         // buffer for attributes.
 107                    );
 108     return vCbnd.lBackColor;
 109 }
 110
 111
 112 int SetTextBkColor(
 113   HPS                               hPS
 114 , int                               nBackgroundColour
 115 )
 116 {
 117     CHARBUNDLE                      vCbnd;
 118     int                             rc;
 119
 120     rc =  QueryTextBkColor(hPS);
 121
 122     vCbnd.lBackColor = nBackgroundColour;
 123     ::GpiSetAttrs(hPS,            // presentation-space handle
 124                   PRIM_CHAR,      // Char primitive.
 125                   CBB_BACK_COLOR, // sets color.
 126                   0,
 127                   &vCbnd          // buffer for attributes.
 128                  );
 129     return rc;
 130 }
 131
 132 int SetBkMode(
 133   HPS                               hPS
 134 , int                               nBackgroundMode
 135 )
 136 {
 137     if(nBackgroundMode == wxTRANSPARENT)
 138         ::GpiSetBackMix( hPS
 139                         ,BM_LEAVEALONE
 140                        );
 141     else
 142         // the background of the primitive takes  over whatever is underneath.
 143         ::GpiSetBackMix( hPS
 144                         ,BM_OVERPAINT
 145                         );
 146     return 0;
 147 }
 148
 149 // ===========================================================================
 150 // implementation
 151 // ===========================================================================
 152
 153 #if wxUSE_DC_CACHEING
 154
 155 /*
 156  * This implementation is a bit ugly and uses the old-fashioned wxList class, so I will
 157  * improve it in due course, either using arrays, or simply storing pointers to one
 158  * entry for the bitmap, and two for the DCs. -- JACS
 159  */
 160
 161 // ---------------------------------------------------------------------------
 162 // wxDCCacheEntry
 163 // ---------------------------------------------------------------------------
 164
 165 wxList wxDC::m_svBitmapCache;
 166 wxList wxDC::m_svDCCache;
 167
 168 wxDCCacheEntry::wxDCCacheEntry(
 169   WXHBITMAP                         hBitmap
 170 , int                               nWidth
 171 , int                               nHeight
 172 , int                               nDepth
 173 )
 174 {
 175     m_hBitmap = hBitmap;
 176     m_hPS     = NULLHANDLE;
 177     m_nWidth  = nWidth;
 178     m_nHeight = nHeight;
 179     m_nDepth  = nDepth;
 180 } // end of wxDCCacheEntry::wxDCCacheEntry
 181
 182 wxDCCacheEntry::wxDCCacheEntry(
 183   HPS                               hPS
 184 , int                               nDepth
 185 )
 186 {
 187     m_hBitmap = NULLHANDLE;
 188     m_hPS     = hPS;
 189     m_nWidth  = 0;
 190     m_nHeight = 0;
 191     m_nDepth  = nDepth;
 192 } // end of wxDCCacheEntry::wxDCCacheEntry
 193
 194 wxDCCacheEntry::~wxDCCacheEntry()
 195 {
 196     if (m_hBitmap)
 197         ::GpiDeleteBitmap(m_hBitmap);
 198     if (m_hPS)
 199         ::GpiDestroyPS(m_hPS);
 200 } // end of wxDCCacheEntry::~wxDCCacheEntry
 201
 202 wxDCCacheEntry* wxDC::FindBitmapInCache(
 203   HPS                               hPS
 204 , int                               nWidth
 205 , int                               nHeight
 206 )
 207 {
 208     int                             nDepth = 24; // we'll fix this later ::GetDeviceCaps((HDC) dc, PLANES) * ::GetDeviceCaps((HDC) dc, BITSPIXEL);
 209     wxNode*                         pNode = m_svBitmapCache.First();
 210     BITMAPINFOHEADER2               vBmpHdr;
 211
 212     while(pNode)
 213     {
 214         wxDCCacheEntry*             pEntry = (wxDCCacheEntry*)pNode->Data();
 215
 216         if (pEntry->m_nDepth == nDepth)
 217         {
 218             memset(&vBmpHdr, 0, sizeof(BITMAPINFOHEADER2));
 219
 220             if (pEntry->m_nWidth < nWidth || pEntry->m_nHeight < nHeight)
 221             {
 222                 ::GpiDeleteBitmap((HBITMAP)pEntry->m_hBitmap);
 223                 vBmpHdr.cbFix     = sizeof(BITMAPINFOHEADER2);
 224                 vBmpHdr.cx        = nWidth;
 225                 vBmpHdr.cy        = nHeight;
 226                 vBmpHdr.cPlanes   = 1;
 227                 vBmpHdr.cBitCount = nDepth;
 228
 229                 pEntry->m_hBitmap = (WXHBITMAP) ::GpiCreateBitmap( hPS
 230                                                                   ,&vBmpHdr
 231                                                                   ,0L, NULL, NULL
 232                                                                  );
 233                 if (!pEntry->m_hBitmap)
 234                 {
 235                     wxLogLastError(wxT("CreateCompatibleBitmap"));
 236                 }
 237                 pEntry->m_nWidth  = nWidth;
 238                 pEntry->m_nHeight = nHeight;
 239                 return pEntry;
 240             }
 241             return pEntry;
 242         }
 243         pNode = pNode->Next();
 244     }
 245     memset(&vBmpHdr, 0, sizeof(BITMAPINFOHEADER2));
 246     vBmpHdr.cbFix     = sizeof(BITMAPINFOHEADER2);
 247     vBmpHdr.cx        = nWidth;
 248     vBmpHdr.cy        = nHeight;
 249     vBmpHdr.cPlanes   = 1;
 250     vBmpHdr.cBitCount = nDepth;
 251
 252     WXHBITMAP                       hBitmap = (WXHBITMAP) ::GpiCreateBitmap( hPS
 253                                                                             ,&vBmpHdr
 254                                                                             ,0L, NULL, NULL
 255                                                                            );
 256     if (!hBitmap)
 257     {
 258         wxLogLastError(wxT("CreateCompatibleBitmap"));
 259     }
 260     wxDCCacheEntry*                 pEntry = new wxDCCacheEntry( hBitmap
 261                                                                 ,nWidth
 262                                                                 ,nHeight
 263                                                                 ,nDepth
 264                                                                );
 265     AddToBitmapCache(pEntry);
 266     return pEntry;
 267 } // end of FindBitmapInCache
 268
 269 wxDCCacheEntry* wxDC::FindDCInCache(
 270   wxDCCacheEntry*                   pNotThis
 271 , HPS                               hPS
 272 )
 273 {
 274     int                             nDepth = 24; // we'll fix this up later ::GetDeviceCaps((HDC) dc, PLANES) * ::GetDeviceCaps((HDC) dc, BITSPIXEL);
 275     wxNode*                         pNode = m_svDCCache.First();
 276
 277     while(pNode)
 278     {
 279         wxDCCacheEntry*             pEntry = (wxDCCacheEntry*)pNode->Data();
 280
 281         //
 282         // Don't return the same one as we already have
 283         //
 284         if (!pNotThis || (pNotThis != pEntry))
 285         {
 286             if (pEntry->m_nDepth == nDepth)
 287             {
 288                 return pEntry;
 289             }
 290         }
 291         pNode = pNode->Next();
 292     }
 293     wxDCCacheEntry*                 pEntry = new wxDCCacheEntry( hPS
 294                                                                 ,nDepth
 295                                                                );
 296     AddToDCCache(pEntry);
 297     return pEntry;
 298 } // end of wxDC::FindDCInCache
 299
 300 void wxDC::AddToBitmapCache(
 301   wxDCCacheEntry*                   pEntry
 302 )
 303 {
 304     m_svBitmapCache.Append(pEntry);
 305 } // end of wxDC::AddToBitmapCache
 306
 307 void wxDC::AddToDCCache(
 308   wxDCCacheEntry*                   pEntry
 309 )
 310 {
 311     m_svDCCache.Append(pEntry);
 312 } // end of wxDC::AddToDCCache
 313
 314 void wxDC::ClearCache()
 315 {
 316     m_svBitmapCache.DeleteContents(TRUE);
 317     m_svBitmapCache.Clear();
 318     m_svBitmapCache.DeleteContents(FALSE);
 319     m_svDCCache.DeleteContents(TRUE);
 320     m_svDCCache.Clear();
 321     m_svDCCache.DeleteContents(FALSE);
 322 } // end of wxDC::ClearCache
 323
 324 // Clean up cache at app exit
 325 class wxDCModule : public wxModule
 326 {
 327 public:
 328     virtual bool OnInit() { return TRUE; }
 329     virtual void OnExit() { wxDC::ClearCache(); }
 330
 331 private:
 332     DECLARE_DYNAMIC_CLASS(wxDCModule)
 333 }; // end of CLASS wxDCModule
 334
 335 IMPLEMENT_DYNAMIC_CLASS(wxDCModule, wxModule)
 336
 337 #endif // ndef for wxUSE_DC_CACHEING
 338
 339 // ---------------------------------------------------------------------------
 340 // wxDC
 341 // ---------------------------------------------------------------------------
 342
 343 wxDC::wxDC(void)
 344 {
 345     wxColour                        vColor;
 346
 347     m_pCanvas      = NULL;
 348
 349     m_hOldBitmap   = 0;
 350     m_hOldPen      = 0;
 351     m_hOldBrush    = 0;
 352     m_hOldFont     = 0;
 353     m_hOldPalette  = 0;
 354
 355     m_bOwnsDC      = FALSE;
 356     m_hDC          = 0;
 357     m_hOldPS       = NULL;
 358     m_hPS          = NULL;
 359     m_bIsPaintTime = FALSE; // True at Paint Time
 360
 361     vColor.InitFromName("BLACK");
 362     m_pen.SetColour(vColor);
 363     vColor.Set("WHITE");
 364     m_brush.SetColour(vColor);
 365 } // end of wxDC::wxDC
 366
 367 wxDC::~wxDC(void)
 368 {
 369     if ( m_hDC != 0 )
 370     {
 371         SelectOldObjects(m_hDC);
 372
 373         // if we own the HDC, we delete it, otherwise we just release it
 374
 375         if (m_bOwnsDC)
 376         {
 377             if(m_hPS)
 378             {
 379                 ::GpiAssociate(m_hPS, NULLHANDLE);
 380                 ::GpiDestroyPS(m_hPS);
 381             }
 382             m_hPS = NULLHANDLE;
 383             ::DevCloseDC((HDC)m_hDC);
 384         }
 385         else
 386         {
 387             //
 388             // Just Dissacociate, not destroy if we don't own the DC
 389             //
 390             if(m_hPS)
 391             {
 392                 ::GpiAssociate(m_hPS, NULLHANDLE);
 393             }
 394         }
 395     }
 396 } // end of wxDC::~wxDC
 397
 398 // This will select current objects out of the DC,
 399 // which is what you have to do before deleting the
 400 // DC.
 401 void wxDC::SelectOldObjects(
 402   WXHDC                             hPS
 403 )
 404 {
 405     if (hPS)
 406     {
 407         if (m_hOldBitmap)
 408         {
 409             ::GpiSetBitmap(hPS, (HBITMAP) m_hOldBitmap);
 410             if (m_vSelectedBitmap.Ok())
 411             {
 412                 m_vSelectedBitmap.SetSelectedInto(NULL);
 413             }
 414         }
 415         m_hOldBitmap = 0;
 416         //
 417         // OS/2 has no other native GDI objects to set in a PS/DC like windows
 418         //
 419         m_hOldPen = 0;
 420         m_hOldBrush = 0;
 421         m_hOldFont = 0;
 422         m_hOldPalette = 0;
 423     }
 424
 425     m_brush           = wxNullBrush;
 426     m_pen             = wxNullPen;
 427     m_palette         = wxNullPalette;
 428     m_font            = wxNullFont;
 429     m_backgroundBrush = wxNullBrush;
 430     m_vSelectedBitmap = wxNullBitmap;
 431 } // end of wxDC::SelectOldObjects
 432
 433 // ---------------------------------------------------------------------------
 434 // clipping
 435 // ---------------------------------------------------------------------------
 436
 437 #define DO_SET_CLIPPING_BOX()                    \
 438 {                                                \
 439     RECTL rect;                                  \
 440                                                  \
 441     ::GpiQueryClipBox(m_hPS, &rect);             \
 442                                                  \
 443     m_clipX1 = (wxCoord) XDEV2LOG(rect.xLeft);   \
 444     m_clipY1 = (wxCoord) YDEV2LOG(rect.yTop);    \
 445     m_clipX2 = (wxCoord) XDEV2LOG(rect.xRight);  \
 446     m_clipY2 = (wxCoord) YDEV2LOG(rect.yBottom); \
 447 }
 448
 449 void wxDC::DoSetClippingRegion(
 450   wxCoord                           vX
 451 , wxCoord                           vY
 452 , wxCoord                           vWidth
 453 , wxCoord                           vHeight
 454 )
 455 {
 456     RECTL                           vRect;
 457
 458     vY = OS2Y(vY,vHeight);
 459     m_clipping    = TRUE;
 460     vRect.xLeft   = vX;
 461     vRect.yTop    = vY + vHeight;
 462     vRect.xRight  = vX + vWidth;
 463     vRect.yBottom = vY;
 464     ::GpiIntersectClipRectangle(m_hPS, &vRect);
 465     DO_SET_CLIPPING_BOX()
 466 } // end of wxDC::DoSetClippingRegion
 467
 468 void wxDC::DoSetClippingRegionAsRegion(
 469   const wxRegion&                   rRegion
 470 )
 471 {
 472      wxCHECK_RET(rRegion.GetHRGN(), wxT("invalid clipping region"));
 473      HRGN                           hRgnOld;
 474
 475      m_clipping = TRUE;
 476      ::GpiSetClipRegion( m_hPS
 477                         ,(HRGN)rRegion.GetHRGN()
 478                         ,&hRgnOld
 479                        );
 480     DO_SET_CLIPPING_BOX()
 481 } // end of wxDC::DoSetClippingRegionAsRegion
 482
 483 void wxDC::DestroyClippingRegion(void)
 484 {
 485     if (m_clipping && m_hPS)
 486     {
 487          HRGN                       hRgnOld;
 488          RECTL                      vRect;
 489
 490          // TODO: this should restore the previous clipped region
 491          //       so that OnPaint processing works correctly, and
 492          //       the update doesn't get destroyed after the first
 493          //       DestroyClippingRegion
 494          vRect.xLeft   = XLOG2DEV(0);
 495          vRect.yTop    = YLOG2DEV(32000);
 496          vRect.xRight  = XLOG2DEV(32000);
 497          vRect.yBottom = YLOG2DEV(0);
 498
 499          HRGN                       hRgn = ::GpiCreateRegion(m_hPS, 1, &vRect);
 500
 501          ::GpiSetClipRegion(m_hPS, hRgn, &hRgnOld);
 502      }
 503       m_clipping = FALSE;
 504 } // end of wxDC::DestroyClippingRegion
 505
 506 // ---------------------------------------------------------------------------
 507 // query capabilities
 508 // ---------------------------------------------------------------------------
 509
 510 bool wxDC::CanDrawBitmap() const
 511 {
 512     return TRUE;
 513 }
 514
 515 bool wxDC::CanGetTextExtent() const
 516 {
 517     LONG                            lTechnology = 0L;
 518
 519     ::DevQueryCaps(GetHDC(), CAPS_TECHNOLOGY, 1L, &lTechnology);
 520     return (lTechnology == CAPS_TECH_RASTER_DISPLAY) || (lTechnology == CAPS_TECH_RASTER_PRINTER);
 521 } // end of wxDC::CanGetTextExtent
 522
 523 int wxDC::GetDepth() const
 524 {
 525     LONG                            lArray[CAPS_COLOR_BITCOUNT];
 526     int                             nBitsPerPixel;
 527
 528     if(::DevQueryCaps( GetHDC()
 529                       ,CAPS_FAMILY
 530                       ,CAPS_COLOR_BITCOUNT
 531                       ,lArray
 532                      ))
 533     {
 534         nBitsPerPixel = (int)lArray[CAPS_COLOR_BITCOUNT];
 535     }
 536     return nBitsPerPixel;
 537 } // end of wxDC::GetDepth
 538
 539 // ---------------------------------------------------------------------------
 540 // drawing
 541 // ---------------------------------------------------------------------------
 542
 543 void wxDC::Clear()
 544 {
 545     //
 546     // If this is a canvas DC then just fill with the background color
 547     // Otherwise purge the whole thing
 548     //
 549     if (m_pCanvas)
 550     {
 551         RECTL                       vRect;
 552
 553         ::GpiQueryClipBox(m_hPS, &vRect);
 554         ::WinFillRect(m_hPS, &vRect, ::GpiQueryBackColor(m_hPS));
 555     }
 556     else
 557     ::GpiErase(m_hPS);
 558 } // end of wxDC::Clear
 559
 560 bool wxDC::DoFloodFill(
 561   wxCoord                           vX
 562 , wxCoord                           vY
 563 , const wxColour&                   rCol
 564 , int                               nStyle
 565 )
 566 {
 567     POINTL                          vPtlPos;
 568     LONG                            lColor;
 569     LONG                            lOptions;
 570     LONG                            lHits;
 571     bool                            bSuccess = FALSE;
 572
 573     vPtlPos.x = vX;             // Loads x-coordinate
 574     vPtlPos.y = OS2Y(vY,0);     // Loads y-coordinate
 575     ::GpiMove(m_hPS, &vPtlPos); // Sets current position
 576     lColor = rCol.GetPixel();
 577     lOptions = FF_BOUNDARY;
 578     if(wxFLOOD_SURFACE == nStyle)
 579         lOptions = FF_SURFACE;
 580
 581     if ((lHits = ::GpiFloodFill(m_hPS, lOptions, lColor)) != GPI_ERROR)
 582         bSuccess = TRUE;
 583     return TRUE;
 584 } // end of wxDC::DoFloodFill
 585
 586 bool wxDC::DoGetPixel(
 587   wxCoord                           vX
 588 , wxCoord                           vY
 589 , wxColour*                         pCol
 590 ) const
 591 {
 592     POINTL                          vPoint;
 593     LONG                            lColor;
 594
 595     vPoint.x = vX;
 596     vPoint.y = OS2Y(vY,0);
 597     lColor = ::GpiSetPel(m_hPS, &vPoint);
 598
 599     //
 600     // Get the color of the pen
 601     //
 602     LONG                            lPencolor = 0x00ffffff;
 603
 604     if (m_pen.Ok())
 605     {
 606         lPencolor = m_pen.GetColour().GetPixel();
 607     }
 608
 609     //
 610     // return the color of the pixel
 611     //
 612     if(pCol)
 613         pCol->Set( GetRValue(lColor)
 614                   ,GetGValue(lColor)
 615                   ,GetBValue(lColor)
 616                  );
 617     return(lColor == lPencolor);
 618 } // end of wxDC::DoGetPixel
 619
 620 void wxDC::DoCrossHair(
 621   wxCoord                           vX
 622 , wxCoord                           vY
 623 )
 624 {
 625     vY = OS2Y(vY,0);
 626
 627     wxCoord                         vX1 = vX - VIEWPORT_EXTENT;
 628     wxCoord                         vY1 = vY - VIEWPORT_EXTENT;
 629     wxCoord                         vX2 = vX + VIEWPORT_EXTENT;
 630     wxCoord                         vY2 = vY + VIEWPORT_EXTENT;
 631     POINTL                          vPoint[4];
 632
 633     vPoint[0].x = vX1;
 634     vPoint[0].y = vY;
 635
 636     vPoint[1].x = vX2;
 637     vPoint[1].y = vY;
 638
 639     ::GpiMove(m_hPS, &vPoint[0]);
 640     ::GpiLine(m_hPS, &vPoint[1]);
 641
 642     vPoint[2].x = vX;
 643     vPoint[2].y = vY1;
 644
 645     vPoint[3].x = vX;
 646     vPoint[3].y = vY2;
 647
 648     ::GpiMove(m_hPS, &vPoint[2]);
 649     ::GpiLine(m_hPS, &vPoint[3]);
 650     CalcBoundingBox(vX1, vY1);
 651     CalcBoundingBox(vX2, vY2);
 652 } // end of wxDC::DoCrossHair
 653
 654 void wxDC::DoDrawLine(
 655   wxCoord                           vX1
 656 , wxCoord                           vY1
 657 , wxCoord                           vX2
 658 , wxCoord                           vY2
 659 )
 660 {
 661     POINTL                          vPoint[2];
 662
 663     vY1 = OS2Y(vY1,0);
 664     vY2 = OS2Y(vY2,0);
 665
 666     vPoint[0].x = vX1;
 667     vPoint[0].y = vY1;
 668     vPoint[1].x = vX2;
 669     vPoint[1].y = vY2;
 670     ::GpiMove(m_hPS, &vPoint[0]);
 671     ::GpiLine(m_hPS, &vPoint[1]);
 672     CalcBoundingBox(vX1, vY1);
 673     CalcBoundingBox(vX2, vY2);
 674 } // end of wxDC::DoDrawLine
 675
 676 //////////////////////////////////////////////////////////////////////////////
 677 // Draws an arc of a circle, centred on (xc, yc), with starting point (x1, y1)
 678 // and ending at (x2, y2). The current pen is used for the outline and the
 679 // current brush for filling the shape. The arc is drawn in an anticlockwise
 680 // direction from the start point to the end point.
 681 //////////////////////////////////////////////////////////////////////////////
 682 void wxDC::DoDrawArc(
 683   wxCoord                           vX1
 684 , wxCoord                           vY1
 685 , wxCoord                           vX2
 686 , wxCoord                           vY2
 687 , wxCoord                           vXc
 688 , wxCoord                           vYc
 689 )
 690 {
 691      POINTL                         vPtlPos;
 692      POINTL                         vPtlArc[2]; // Structure for current position
 693      int                            nDx;
 694      int                            nDy;
 695      double                         dRadius;
 696      double                         dAngl1;
 697      double                         dAngl2;
 698      double                         dAnglmid;
 699      wxCoord                        vXm;
 700      wxCoord                        vYm;
 701      ARCPARAMS                      vArcp; // Structure for arc parameters
 702
 703     if((vX1 == vXc && vY1 == vXc) || (vX2 == vXc && vY2 == vXc))
 704         return; // Draw point ??
 705     dRadius = 0.5 * ( hypot( (double)(vY1 - vYc)
 706                             ,(double)(vX1 - vXc)
 707                            ) +
 708                       hypot( (double)(vY2 - vYc)
 709                             ,(double)(vX2 - vXc)
 710                            )
 711                      );
 712
 713     dAngl1 = atan2( (double)(vY1 - vYc)
 714                    ,(double)(vX1 - vXc)
 715                   );
 716     dAngl2 = atan2( (double)(vY2 - vYc)
 717                    ,(double)(vX2 - vXc)
 718                   );
 719     if(dAngl2 < dAngl1)
 720         dAngl2 += M_PI * 2;
 721
 722     //
 723     // GpiPointArc can't draw full arc
 724     //
 725      if(dAngl2 == dAngl1 || (vX1 == vX2 && vY1 == vY2) )
 726      {
 727         //
 728         // Medium point
 729         //
 730         dAnglmid = (dAngl1 + dAngl2)/2. + M_PI;
 731         vXm      = vXc + dRadius * cos(dAnglmid);
 732         vYm      = vYc + dRadius * sin(dAnglmid);
 733         DoDrawArc( vX1, vY1
 734                   ,vXm, vYm
 735                   ,vXc, vYc
 736                  );
 737         DoDrawArc( vXm, vYm
 738                   ,vX2, vY2
 739                   ,vXc, vYc
 740                  );
 741         return;
 742     }
 743
 744     //
 745     // Medium point
 746     //
 747     dAnglmid = (dAngl1 + dAngl2)/2.;
 748     vXm      = vXc + dRadius * cos(dAnglmid);
 749     vYm      = vYc + dRadius * sin(dAnglmid);
 750
 751     //
 752     // Ellipse main axis (r,q), (p,s) with center at (0,0) */
 753     //
 754     vArcp.lR = 0;
 755     vArcp.lQ = 1;
 756     vArcp.lP = 1;
 757     vArcp.lS = 0;
 758     ::GpiSetArcParams(m_hPS, &vArcp); // Sets parameters to default
 759
 760     vPtlPos.x = vX1; // Loads x-coordinate
 761     vPtlPos.y = vY1; // Loads y-coordinate
 762     ::GpiMove(m_hPS, &vPtlPos); // Sets current position
 763     vPtlArc[0].x = vXm;
 764     vPtlArc[0].y = vYm;
 765     vPtlArc[1].x = vX2;
 766     vPtlArc[1].y = vY2;
 767     ::GpiPointArc(m_hPS, vPtlArc); // Draws the arc
 768     CalcBoundingBox( (vXc - dRadius)
 769                     ,(vYc - dRadius)
 770                    );
 771     CalcBoundingBox( (vXc + dRadius)
 772                     ,(vYc + dRadius)
 773                    );
 774 } // end of wxDC::DoDrawArc
 775
 776 void wxDC::DoDrawCheckMark(
 777   wxCoord                           vX1
 778 , wxCoord                           vY1
 779 , wxCoord                           vWidth
 780 , wxCoord                           vHeight
 781 )
 782 {
 783     POINTL                          vPoint[2];
 784
 785     vY1 = OS2Y(vY1,vHeight);
 786
 787     vPoint[0].x = vX1;
 788     vPoint[0].y = vY1;
 789     vPoint[1].x = vX1 + vWidth;
 790     vPoint[1].y = vY1 + vHeight;
 791
 792     ::GpiMove(m_hPS, &vPoint[0]);
 793     ::GpiBox( m_hPS       // handle to a presentation space
 794              ,DRO_OUTLINE // draw the box outline ? or ?
 795              ,&vPoint[1]  // address of the corner
 796              ,0L          // horizontal corner radius
 797              ,0L          // vertical corner radius
 798             );
 799     if(vWidth > 4 && vHeight > 4)
 800     {
 801         int                         nTmp;
 802
 803         vPoint[0].x += 2; vPoint[0].y += 2;
 804         vPoint[1].x -= 2; vPoint[1].y -= 2;
 805         ::GpiMove(m_hPS, &vPoint[0]);
 806         ::GpiLine(m_hPS, &vPoint[1]);
 807         nTmp = vPoint[0].x;
 808         vPoint[0].x = vPoint[1].x;
 809         vPoint[1].x = nTmp;
 810         ::GpiMove(m_hPS, &vPoint[0]);
 811         ::GpiLine(m_hPS, &vPoint[1]);
 812     }
 813     CalcBoundingBox( vX1
 814                     ,vY1
 815                    );
 816
 817     wxCoord                         vX2 = vX1 + vWidth;
 818     wxCoord                         vY2 = vY1 + vHeight;
 819
 820     CalcBoundingBox( vX2
 821                     ,vY2
 822                    );
 823 } // end of wxDC::DoDrawCheckMark
 824
 825 void wxDC::DoDrawPoint(
 826   wxCoord                           vX
 827 , wxCoord                           vY
 828 )
 829 {
 830     POINTL                          vPoint;
 831     COLORREF                        vColor = 0x00ffffff;
 832
 833     if (m_pen.Ok())
 834     {
 835         vColor = m_pen.GetColour().GetPixel();
 836     }
 837     ::GpiSetColor(m_hPS, vColor);
 838     vPoint.x = vX;
 839     vPoint.y = OS2Y(vY,0);
 840     ::GpiSetPel(m_hPS, &vPoint);
 841     CalcBoundingBox( vX
 842                     ,vY
 843                    );
 844 } // end of wxDC::DoDrawPoint
 845
 846 void wxDC::DoDrawPolygon(
 847   int                               n
 848 , wxPoint                           vPoints[]
 849 , wxCoord                           vXoffset
 850 , wxCoord                           vYoffset
 851 , int                               nFillStyle
 852 )
 853 {
 854     ULONG                           ulCount = 1;    // Number of polygons.
 855     POLYGON                         vPlgn;          // polygon.
 856     ULONG                           flOptions = 0L; // Drawing options.
 857
 858 //////////////////////////////////////////////////////////////////////////////
 859 // This contains fields of option bits... to draw boundary lines as well as
 860 // the area interior.
 861 //
 862 // Drawing boundary lines:
 863 //   POLYGON_NOBOUNDARY              Does not draw boundary lines.
 864 //   POLYGON_BOUNDARY                Draws boundary lines (the default).
 865 //
 866 // Construction of the area interior:
 867 //   POLYGON_ALTERNATE               Constructs interior in alternate mode
 868 //                                   (the default).
 869 //   POLYGON_WINDING                 Constructs interior in winding mode.
 870 //////////////////////////////////////////////////////////////////////////////
 871
 872     ULONG                           flModel = 0L; // Drawing model.
 873
 874 //////////////////////////////////////////////////////////////////////////////
 875 // Drawing model.
 876 //   POLYGON_INCL  Fill is inclusive of bottom right (the default).
 877 //   POLYGON_EXCL  Fill is exclusive of bottom right.
 878 //       This is provided to aid migration from other graphics models.
 879 //////////////////////////////////////////////////////////////////////////////
 880
 881     LONG                            lHits = 0L; // Correlation/error indicator.
 882     POINTL                          vPoint;
 883     int                             i;
 884     int                             nIsTRANSPARENT = 0;
 885     LONG                            lBorderColor = 0L;
 886     LONG                            lColor = 0L;
 887
 888     lBorderColor = m_pen.GetColour().GetPixel();
 889     lColor       = m_brush.GetColour().GetPixel();
 890     if(m_brush.GetStyle() == wxTRANSPARENT)
 891         nIsTRANSPARENT = 1;
 892
 893     vPlgn.ulPoints = n;
 894     vPlgn.aPointl = (POINTL*) calloc( n + 1
 895                                      ,sizeof(POINTL)
 896                                     ); // well, new will call malloc
 897
 898     for(i = 0; i < n; i++)
 899     {
 900         vPlgn.aPointl[i].x = vPoints[i].x;         // +xoffset;
 901         vPlgn.aPointl[i].y = OS2Y(vPoints[i].y,0); // +yoffset;
 902     }
 903     flModel = POLYGON_BOUNDARY;
 904     if(nFillStyle == wxWINDING_RULE)
 905         flModel |= POLYGON_WINDING;
 906     else
 907         flModel |= POLYGON_ALTERNATE;
 908
 909     vPoint.x = vXoffset;
 910     vPoint.y = OS2Y(vYoffset,0);
 911
 912     ::GpiSetColor(m_hPS, lBorderColor);
 913     ::GpiMove(m_hPS, &vPoint);
 914     lHits = ::GpiPolygons(m_hPS, ulCount, &vPlgn, flOptions, flModel);
 915     free(vPlgn.aPointl);
 916 } // end of wxDC::DoDrawPolygon
 917
 918 void wxDC::DoDrawLines(
 919   int                               n
 920 , wxPoint                           vPoints[]
 921 , wxCoord                           vXoffset
 922 , wxCoord                           vYoffset
 923 )
 924 {
 925     POINTL                          vPoint;
 926
 927     if (vXoffset != 0L || vXoffset != 0L)
 928     {
 929         int                             i;
 930
 931         vPoint.x = vPoints[0].x + vXoffset;
 932         vPoint.y = OS2Y(vPoints[0].y + vYoffset,0);
 933         ::GpiMove(m_hPS, &vPoint);
 934
 935         LONG                            lBorderColor = m_pen.GetColour().GetPixel();
 936
 937         ::GpiSetColor(m_hPS, lBorderColor);
 938         for(i = 1; i < n; i++)
 939         {
 940             vPoint.x = vPoints[i].x + vXoffset;
 941             vPoint.y = OS2Y(vPoints[i].y + vYoffset,0);
 942             ::GpiLine(m_hPS, &vPoint);
 943         }
 944     }
 945     else
 946     {
 947         int                         i;
 948
 949         CalcBoundingBox( vPoints[i].x
 950                         ,vPoints[i].y
 951                        );
 952         vPoint.x = vPoints[0].x;
 953         vPoint.y = OS2Y(vPoints[0].y,0);
 954         ::GpiMove(m_hPS, &vPoint);
 955
 956         for (i = 0; i < n; i++)
 957         {
 958             CalcBoundingBox( vPoints[i].x
 959                             ,vPoints[i].y
 960                            );
 961             vPoint.x = vPoints[i].x;
 962             vPoint.y = OS2Y(vPoints[i].y,0);
 963             ::GpiLine(m_hPS, &vPoint);
 964         }
 965     }
 966 } // end of wxDC::DoDrawLines
 967
 968 void wxDC::DoDrawRectangle(
 969   wxCoord                           vX
 970 , wxCoord                           vY
 971 , wxCoord                           vWidth
 972 , wxCoord                           vHeight
 973 )
 974 {
 975     POINTL                          vPoint[2];
 976     LONG                            lControl;
 977     LONG                            lColor;
 978     LONG                            lBorderColor;
 979     int                             nIsTRANSPARENT = 0;
 980
 981     //
 982     // Might be a memory DC with no Paint rect
 983     //
 984     if (!(m_vRclPaint.yTop == 0 &&
 985           m_vRclPaint.yBottom == 0 &&
 986           m_vRclPaint.xRight == 0 &&
 987           m_vRclPaint.xLeft == 0))
 988         vY = OS2Y(vY,vHeight);
 989
 990     wxCoord                         vX2 = vX + vWidth;
 991     wxCoord                         vY2 = vY + vHeight;
 992
 993     vPoint[0].x = vX;
 994     vPoint[0].y = vY;
 995     vPoint[1].x = vX + vWidth;
 996     vPoint[1].y = vY + vHeight;
 997     ::GpiMove(m_hPS, &vPoint[0]);
 998     lColor       = m_brush.GetColour().GetPixel();
 999     lBorderColor = m_pen.GetColour().GetPixel();
1000     if (m_brush.GetStyle() == wxTRANSPARENT)
1001         nIsTRANSPARENT = 1;
1002     if(lColor == lBorderColor || nIsTRANSPARENT)
1003     {
1004         lControl = DRO_OUTLINEFILL; //DRO_FILL;
1005         if(m_brush.GetStyle() == wxTRANSPARENT)
1006             lControl = DRO_OUTLINE;
1007
1008         ::GpiSetColor(m_hPS, lColor);
1009         ::GpiBox( m_hPS       // handle to a presentation space
1010                  ,lControl   // draw the box outline ? or ?
1011                  ,&vPoint[1]  // address of the corner
1012                  ,0L          // horizontal corner radius
1013                  ,0L          // vertical corner radius
1014                 );
1015     }
1016     else
1017     {
1018         lControl = DRO_OUTLINE;
1019         ::GpiSetColor( m_hPS
1020                       ,lBorderColor
1021                      );
1022         ::GpiBox( m_hPS
1023                  ,lControl
1024                  ,&vPoint[1]
1025                  ,0L
1026                  ,0L
1027                 );
1028         lControl = DRO_FILL;
1029         ::GpiSetColor( m_hPS
1030                       ,lColor
1031                      );
1032         vPoint[0].x = vX + 1;
1033         vPoint[0].y = vY + 1;
1034         vPoint[1].x = vX + vWidth - 1;
1035         vPoint[1].y = vY + vHeight - 1;
1036         ::GpiMove(m_hPS, &vPoint[0]);
1037         ::GpiBox( m_hPS
1038                  ,lControl
1039                  ,&vPoint[1]
1040                  ,0L
1041                  ,0L
1042                 );
1043         //
1044         // Debug testing:
1045         //
1046         if (m_vSelectedBitmap != wxNullBitmap)
1047         {
1048             BITMAPINFOHEADER2           vHeader;
1049             BITMAPINFO2                 vInfo;
1050
1051             vHeader.cbFix = 16L;
1052             if (::GpiQueryBitmapInfoHeader(m_hPS, &vHeader))
1053             {
1054                 int                     nBytesPerLine = vHeader.cBitCount/8;
1055                 unsigned char*          pucData = NULL;
1056                 unsigned char*          pucBits;
1057                 LONG                    lScans = 0L;
1058
1059                 vInfo.cbFix = 16;
1060                 vInfo.cx              = vHeader.cx;
1061                 vInfo.cy              = vHeader.cy;
1062                 vInfo.cPlanes         = vHeader.cPlanes;
1063                 vInfo.cBitCount       = vHeader.cBitCount;
1064                 pucData = (unsigned char*)malloc(nBytesPerLine * vHeight);
1065                 pucBits = pucData;
1066                 for (int i = 0; i < vHeight; i++)
1067                 {
1068                     if (i <= m_vSelectedBitmap.GetHeight())
1069                     {
1070                         for (int j = 0; j < vWidth; j++)
1071                         {
1072                             if (j <= m_vSelectedBitmap.GetWidth())
1073                             {
1074                                 vPoint[0].x = j; vPoint[0].y = i;
1075                                 lColor = ::GpiQueryPel(m_hPS, &vPoint[0]);
1076                                 *(pucBits++) = lColor >> 24;
1077                                 *(pucBits++) = lColor >> 16;
1078                                 *(pucBits++) = lColor >> 8;
1079                             }
1080                         }
1081                     }
1082                 }
1083                 lScans = ::GpiSetBitmapBits( m_hPS
1084                                             ,0             // Start at the bottom
1085                                             ,(LONG)vHeight // One line per scan
1086                                             ,(PBYTE)pucData
1087                                             ,&vInfo
1088                                            );
1089             }
1090         }
1091     }
1092     CalcBoundingBox(vX, vY);
1093     CalcBoundingBox(vX2, vY2);
1094 } // end of wxDC::DoDrawRectangle
1095
1096 void wxDC::DoDrawRoundedRectangle(
1097   wxCoord                           vX
1098 , wxCoord                           vY
1099 , wxCoord                           vWidth
1100 , wxCoord                           vHeight
1101 , double                            dRadius
1102 )
1103 {
1104     POINTL                          vPoint[2];
1105     LONG                            lControl;
1106
1107     vY = OS2Y(vY,vHeight);
1108
1109     wxCoord                         vX2 = (vX + vWidth);
1110     wxCoord                         vY2 = (vY + vHeight);
1111
1112     vPoint[0].x = vX;
1113     vPoint[0].y = YLOG2DEV(vY) - vHeight;
1114     vPoint[1].x = vX + vWidth;
1115     vPoint[1].y = vY;
1116     ::GpiMove(m_hPS, &vPoint[0]);
1117
1118     lControl = DRO_OUTLINEFILL; //DRO_FILL;
1119     if (m_brush.GetStyle() == wxTRANSPARENT)
1120         lControl = DRO_OUTLINE;
1121     ::GpiBox( m_hPS         // handle to a presentation space
1122              ,DRO_OUTLINE   // draw the box outline ? or ?
1123              ,&vPoint[1]    // address of the corner
1124              ,(LONG)dRadius // horizontal corner radius
1125              ,(LONG)dRadius // vertical corner radius
1126             );
1127     CalcBoundingBox(vX, vY);
1128     CalcBoundingBox(vX2, vY2);
1129 } // end of wxDC::DoDrawRoundedRectangle
1130
1131 // Draw Ellipse within box (x,y) - (x+width, y+height)
1132 void wxDC::DoDrawEllipse(
1133   wxCoord                           vX
1134 , wxCoord                           vY
1135 , wxCoord                           vWidth
1136 , wxCoord                           vHeight
1137 )
1138 {
1139     POINTL                          vPtlPos; // Structure for current position
1140     FIXED                           vFxMult; // Multiplier for ellipse
1141     ARCPARAMS                       vArcp;   // Structure for arc parameters
1142
1143     vY = OS2Y(vY,vHeight);
1144
1145     vArcp.lR = 0;
1146     vArcp.lQ = vHeight/2;
1147     vArcp.lP = vWidth/2;
1148     vArcp.lS = 0;
1149     ::GpiSetArcParams( m_hPS
1150                       ,&vArcp
1151                      ); // Sets parameters to default
1152     vPtlPos.x = vX + vWidth/2;  // Loads x-coordinate
1153     vPtlPos.y = vY + vHeight/2; // Loads y-coordinate
1154     ::GpiMove( m_hPS
1155               ,&vPtlPos
1156              ); // Sets current position
1157     vFxMult = MAKEFIXED(1, 0);             /* Sets multiplier            */
1158
1159     //
1160     // DRO_FILL, DRO_OTLINEFILL - where to get
1161     //
1162     ::GpiFullArc( m_hPS
1163                  ,DRO_OUTLINE
1164                  ,vFxMult
1165                 ); // Draws full arc with center at current position
1166
1167     wxCoord                         vX2 = (vX + vWidth);
1168     wxCoord                         vY2 = (vY + vHeight);
1169
1170     CalcBoundingBox(vX, vY);
1171     CalcBoundingBox(vX2, vY2);
1172 } // end of wxDC::DoDrawEllipse
1173
1174 void wxDC::DoDrawEllipticArc(
1175   wxCoord                           vX
1176 , wxCoord                           vY
1177 , wxCoord                           vWidth
1178 , wxCoord                           vHeight
1179 , double                            dSa
1180 , double                            dEa
1181 )
1182 {
1183     POINTL                          vPtlPos; // Structure for current position
1184     FIXED                           vFxMult; // Multiplier for ellipse
1185     ARCPARAMS                       vArcp;   // Structure for arc parameters
1186     FIXED                           vFSa;
1187     FIXED                           vFSweepa; // Start angle, sweep angle
1188     double                          dIntPart;
1189     double                          dFractPart;
1190     double                          dRadius;
1191
1192     vY = OS2Y(vY,vHeight);
1193
1194     dFractPart = modf(dSa,&dIntPart);
1195     vFSa = MAKEFIXED((int)dIntPart, (int)(dFractPart * 0xffff) );
1196     dFractPart = modf(dEa - dSa, &dIntPart);
1197     vFSweepa = MAKEFIXED((int)dIntPart, (int)(dFractPart * 0xffff) );
1198
1199     //
1200     // Ellipse main axis (r,q), (p,s) with center at (0,0)
1201     //
1202     vArcp.lR = 0;
1203     vArcp.lQ = vHeight/2;
1204     vArcp.lP = vWidth/2;
1205     vArcp.lS = 0;
1206     ::GpiSetArcParams(m_hPS, &vArcp); // Sets parameters to default
1207     vPtlPos.x = vX + vWidth/2  * (1. + cos(DegToRad(dSa))); // Loads x-coordinate
1208     vPtlPos.y = vY + vHeight/2 * (1. + sin(DegToRad(dSa))); // Loads y-coordinate
1209     ::GpiMove(m_hPS, &vPtlPos); // Sets current position
1210
1211     //
1212     // May be not to the center ?
1213     //
1214     vPtlPos.x = vX + vWidth/2 ; // Loads x-coordinate
1215     vPtlPos.y = vY + vHeight/2; // Loads y-coordinate
1216     vFxMult = MAKEFIXED(1, 0);  // Sets multiplier
1217
1218     //
1219     // DRO_FILL, DRO_OTLINEFILL - where to get
1220     //
1221     ::GpiPartialArc( m_hPS
1222                     ,&vPtlPos
1223                     ,vFxMult
1224                     ,vFSa
1225                     ,vFSweepa
1226                    );
1227     wxCoord                         vX2 = (vX + vWidth);
1228     wxCoord                         vY2 = (vY + vHeight);
1229
1230     CalcBoundingBox(vX, vY);
1231     CalcBoundingBox(vX2, vY2);
1232 } // end of wxDC::DoDrawEllipticArc
1233
1234 void wxDC::DoDrawIcon(
1235   const wxIcon&                     rIcon
1236 , wxCoord                           vX
1237 , wxCoord                           vY
1238 )
1239 {
1240     vY = OS2Y(vY,rIcon.GetHeight());
1241     wxCHECK_RET( rIcon.Ok(), wxT("invalid icon in DrawIcon") );
1242
1243     ::WinDrawPointer( GetHPS()
1244                      ,vX
1245                      ,vY
1246                      ,(HPOINTER)GetHiconOf(rIcon)
1247                      ,DP_NORMAL
1248                     );
1249     CalcBoundingBox(vX, vY);
1250     CalcBoundingBox(vX + rIcon.GetWidth(), vY + rIcon.GetHeight());
1251 } // end of wxDC::DoDrawIcon
1252
1253 void wxDC::DoDrawBitmap(
1254   const wxBitmap&                   rBmp
1255 , wxCoord                           vX
1256 , wxCoord                           vY
1257 , bool                              bUseMask
1258 )
1259 {
1260     if (!bUseMask && !IsKindOf(CLASSINFO(wxPrinterDC)))
1261     {
1262         HBITMAP                         hBitmap =  (HBITMAP)rBmp.GetHBITMAP();
1263         wxBitmap                        vNewBitmap( rBmp.GetWidth()
1264                                                    ,rBmp.GetHeight()
1265                                                    ,rBmp.GetDepth()
1266                                                   );
1267         HBITMAP                         hBitmapOld = ::GpiSetBitmap((HPS)GetHPS(), vNewBitmap.GetHBITMAP());
1268         LONG                            lOldTextground = ::GpiQueryColor((HPS)GetHPS());
1269         LONG                            lOldBackground = ::GpiQueryBackColor((HPS)GetHPS());
1270
1271         if (m_textForegroundColour.Ok())
1272         {
1273             ::GpiSetColor( (HPS)GetHPS()
1274                            ,m_textForegroundColour.GetPixel()
1275                           );
1276         }
1277         if (m_textBackgroundColour.Ok())
1278         {
1279             ::GpiSetBackColor( (HPS)GetHPS()
1280                               ,m_textBackgroundColour.GetPixel()
1281                              );
1282         }
1283
1284         vY = OS2Y(vY,rBmp.GetHeight());
1285
1286         //
1287         // Flip the picture as OS/2 is upside-down
1288         //
1289         POINTL                      vPoint[4] = { vX, vY + rBmp.GetHeight()
1290                                                  ,vX + rBmp.GetWidth(), vY
1291                                                  ,0, 0
1292                                                  ,rBmp.GetWidth(), rBmp.GetHeight()
1293                                                 };
1294         ::GpiWCBitBlt( (HPS)GetHPS()
1295                       ,hBitmap
1296                       ,4
1297                       ,vPoint
1298                       ,ROP_SRCCOPY
1299                       ,BBO_IGNORE
1300                      );
1301         ::GpiSetBitmap((HPS)GetHPS(), hBitmapOld);
1302         ::GpiSetColor((HPS)GetHPS(), lOldTextground);
1303         ::GpiSetBackColor((HPS)GetHPS(), lOldBackground);
1304     }
1305 } // end of wxDC::DoDrawBitmap
1306
1307 void wxDC::DoDrawText(
1308   const wxString&                   rsText
1309 , wxCoord                           vX
1310 , wxCoord                           vY
1311 )
1312 {
1313     wxCoord                         vWidth;
1314     wxCoord                         vHeight;
1315
1316     DrawAnyText( rsText
1317                 ,vX
1318                 ,vY
1319                );
1320
1321     CalcBoundingBox(vX, vY);
1322     GetTextExtent(rsText, &vWidth, &vHeight);
1323     CalcBoundingBox((vX + vWidth), (vY + vHeight));
1324 } // end of wxDC::DoDrawText
1325
1326 void wxDC::DrawAnyText(
1327   const wxString&                   rsText
1328 , wxCoord                           vX
1329 , wxCoord                           vY
1330 )
1331 {
1332     int                             nOldBackground = 0;
1333     POINTL                          vPtlStart;
1334     LONG                            lHits;
1335     wxCoord                         vTextX = 0;
1336     wxCoord                         vTextY = 0;
1337
1338     //
1339     // prepare for drawing the text
1340     //
1341
1342     //
1343     // Set text color attributes
1344     //
1345     if (m_textForegroundColour.Ok())
1346     {
1347         SetTextColor( m_hPS
1348                      ,(int)m_textForegroundColour.GetPixel()
1349                     );
1350     }
1351
1352     if (m_textBackgroundColour.Ok())
1353     {
1354         nOldBackground = SetTextBkColor( m_hPS
1355                                         ,(int)m_textBackgroundColour.GetPixel()
1356                                        );
1357     }
1358     SetBkMode( m_hPS
1359               ,m_backgroundMode
1360              );
1361     GetTextExtent( rsText
1362                   ,&vTextX
1363                   ,&vTextY
1364                  );
1365     vPtlStart.x = vX;
1366     vPtlStart.y = OS2Y(vY,vTextY);
1367
1368     lHits = ::GpiCharStringAt( m_hPS
1369                               ,&vPtlStart
1370                               ,rsText.length()
1371                               ,(PCH)rsText.c_str()
1372                              );
1373     if (lHits != GPI_OK)
1374     {
1375         wxLogLastError(wxT("TextOut"));
1376     }
1377
1378     //
1379     // Restore the old parameters (text foreground colour may be left because
1380     // it never is set to anything else, but background should remain
1381     // transparent even if we just drew an opaque string)
1382     //
1383     if (m_textBackgroundColour.Ok())
1384             SetTextBkColor( m_hPS
1385                            ,nOldBackground
1386                           );
1387     SetBkMode( m_hPS
1388               ,wxTRANSPARENT
1389              );
1390 }
1391
1392 void wxDC::DoDrawRotatedText(
1393   const wxString&                   rsText
1394 , wxCoord                           vX
1395 , wxCoord                           vY
1396 , double                            dAngle
1397 )
1398 {
1399     if (dAngle == 0.0)
1400     {
1401         DoDrawText( rsText
1402                    ,vX
1403                    ,vY
1404                   );
1405     }
1406
1407    // TODO:
1408    /*
1409     if ( angle == 0.0 )
1410     {
1411         DoDrawText(text, x, y);
1412     }
1413     else
1414     {
1415         LOGFONT lf;
1416         wxFillLogFont(&lf, &m_font);
1417
1418         // GDI wants the angle in tenth of degree
1419         long angle10 = (long)(angle * 10);
1420         lf.lfEscapement = angle10;
1421         lf. lfOrientation = angle10;
1422
1423         HFONT hfont = ::CreateFontIndirect(&lf);
1424         if ( !hfont )
1425         {
1426             wxLogLastError("CreateFont");
1427         }
1428         else
1429         {
1430             HFONT hfontOld = ::SelectObject(GetHdc(), hfont);
1431
1432             DrawAnyText(text, x, y);
1433
1434             (void)::SelectObject(GetHdc(), hfontOld);
1435         }
1436
1437         // call the bounding box by adding all four vertices of the rectangle
1438         // containing the text to it (simpler and probably not slower than
1439         // determining which of them is really topmost/leftmost/...)
1440         wxCoord w, h;
1441         GetTextExtent(text, &w, &h);
1442
1443         double rad = DegToRad(angle);
1444
1445         // "upper left" and "upper right"
1446         CalcBoundingBox(x, y);
1447         CalcBoundingBox(x + w*cos(rad), y - h*sin(rad));
1448         CalcBoundingBox(x + h*sin(rad), y + h*cos(rad));
1449
1450         // "bottom left" and "bottom right"
1451         x += (wxCoord)(h*sin(rad));
1452         y += (wxCoord)(h*cos(rad));
1453         CalcBoundingBox(x, y);
1454         CalcBoundingBox(x + h*sin(rad), y + h*cos(rad));
1455     }
1456 */
1457 }
1458
1459 // ---------------------------------------------------------------------------
1460 // set GDI objects
1461 // ---------------------------------------------------------------------------
1462
1463 void wxDC::DoSelectPalette(
1464   bool                              bRealize
1465 )
1466 {
1467     //
1468     // Set the old object temporarily, in case the assignment deletes an object
1469     // that's not yet selected out.
1470     //
1471     if (m_hOldPalette)
1472     {
1473         m_hOldPalette = 0;
1474     }
1475
1476     if (m_palette.Ok())
1477     {
1478         HPALETTE                    hOldPal;
1479
1480         hOldPal = ::GpiSelectPalette((HDC) m_hPS, (HPALETTE) m_palette.GetHPALETTE());
1481         if (!m_hOldPalette)
1482             m_hOldPalette = (WXHPALETTE)hOldPal;
1483     }
1484 } // end of wxDC::DoSelectPalette
1485
1486 void wxDC::InitializePalette()
1487 {
1488     if (wxDisplayDepth() <= 8 )
1489     {
1490         //
1491         // Look for any window or parent that has a custom palette. If any has
1492         // one then we need to use it in drawing operations
1493         //
1494         wxWindow*                   pWin = m_pCanvas->GetAncestorWithCustomPalette();
1495
1496         m_hasCustomPalette = pWin && pWin->HasCustomPalette();
1497         if (m_hasCustomPalette)
1498         {
1499             m_palette = pWin->GetPalette();
1500
1501             //
1502             // turn on PM translation for this palette
1503             //
1504             DoSelectPalette();
1505         }
1506     }
1507 } // end of wxDC::InitializePalette
1508
1509 void wxDC::SetPalette(
1510   const wxPalette&                  rPalette
1511 )
1512 {
1513     if (m_hOldFont)
1514     {
1515         m_hOldFont = 0;
1516     }
1517     m_palette = rPalette;
1518     if (!rPalette.Ok())
1519     {
1520         if (m_hOldFont)
1521         {
1522             m_hOldFont = 0;
1523         }
1524     }
1525     HPALETTE                    hOldPal = ::GpiSelectPalette((HDC) m_hPS, (HPALETTE) m_palette.GetHPALETTE());
1526     if (!m_hOldPalette)
1527         m_hOldPalette = (WXHPALETTE)hOldPal;
1528 } // end of wxDC::SetPalette
1529
1530 void wxDC::SetFont(
1531   const wxFont&                     rFont
1532 )
1533 {
1534     //
1535     // Set the old object temporarily, in case the assignment deletes an object
1536     // that's not yet selected out.
1537     //
1538     if (m_hOldFont)
1539     {
1540         m_hOldFont = 0;
1541     }
1542     m_font = rFont;
1543     if (!rFont.Ok())
1544     {
1545         m_hOldFont = 0;
1546     }
1547
1548     m_font.SetPS(m_hPS); // this will realize the font
1549
1550     if (m_font.Ok())
1551     {
1552         HFONT                       hFont = m_font.GetResourceHandle();
1553         if (hFont == (HFONT) NULL)
1554         {
1555             wxLogDebug(wxT("::SelectObject failed in wxDC::SetFont."));
1556         }
1557         if (!m_hOldFont)
1558             m_hOldFont = (WXHFONT) hFont;
1559     }
1560 } // end of wxDC::SetFont
1561
1562 void wxDC::SetPen(
1563   const wxPen&                      rPen
1564 )
1565 {
1566     wxCHECK_RET( Ok(), wxT("invalid window dc") );
1567
1568     if (m_pen == rPen)
1569         return;
1570     m_pen = rPen;
1571     if (!m_pen.Ok())
1572         return;
1573
1574     if (m_hOldPen)
1575         m_hOldPen = 0L;
1576     m_pen = rPen;
1577
1578     if (!m_pen.Ok())
1579     {
1580         if (m_hOldPen)
1581         {
1582             m_pen.SetPS((HPS)m_hOldPen);
1583         }
1584         m_hOldPen = 0L;
1585     }
1586
1587     if (m_pen.Ok())
1588     {
1589         if (m_pen.GetResourceHandle())
1590         {
1591             m_pen.SetPS(m_hPS);
1592             if (!m_hOldPen)
1593                 m_hOldPen = m_pen.GetPS();
1594         }
1595     }
1596 }
1597
1598 void wxDC::SetBrush(
1599   const wxBrush&                    rBrush
1600 )
1601 {
1602     wxCHECK_RET( Ok(), wxT("invalid window dc") );
1603
1604     if (m_hOldBrush)
1605         m_hOldBrush = 0L;
1606     m_brush = rBrush;
1607     if (!m_brush.Ok())
1608     if (m_brush == rBrush)
1609         return;
1610     if (!m_brush.Ok())
1611         if (m_hOldBrush)
1612             m_hOldBrush = 0L;
1613
1614     if (!m_brush.Ok())
1615     {
1616         if (m_hOldBrush)
1617         {
1618             m_brush.SetPS((HPS)m_hOldBrush);
1619         }
1620         m_hOldBrush = 0L;
1621     }
1622
1623     if (m_brush.Ok())
1624     {
1625         if (m_brush.GetResourceHandle())
1626         {
1627             m_brush.SetPS(m_hPS);
1628             if (!m_hOldBrush)
1629                 m_hOldBrush = (WXHWND)m_brush.GetPS();
1630         }
1631     }
1632 } // end of wxDC::SetBrush
1633
1634 void wxDC::SetBackground(
1635   const wxBrush&                    rBrush
1636 )
1637 {
1638     m_backgroundBrush = rBrush;
1639     if (!m_backgroundBrush.Ok())
1640         return;
1641     if (m_pCanvas)
1642     {
1643         bool                        bCustomColours = TRUE;
1644
1645         //
1646         // If we haven't specified wxUSER_COLOURS, don't allow the panel/dialog box to
1647         // change background colours from the control-panel specified colours.
1648         //
1649         if (m_pCanvas->IsKindOf(CLASSINFO(wxWindow)) &&
1650             ((m_pCanvas->GetWindowStyleFlag() & wxUSER_COLOURS) != wxUSER_COLOURS))
1651             bCustomColours = FALSE;
1652         if (bCustomColours)
1653         {
1654             if (m_backgroundBrush.GetStyle()==wxTRANSPARENT)
1655             {
1656                 m_pCanvas->SetTransparent(TRUE);
1657             }
1658             else
1659             {
1660                 //
1661                 // Setting the background brush of a DC
1662                 // doesn't affect the window background colour. However,
1663                 // I'm leaving in the transparency setting because it's needed by
1664                 // various controls (e.g. wxStaticText) to determine whether to draw
1665                 // transparently or not. TODO: maybe this should be a new function
1666                 // wxWindow::SetTransparency(). Should that apply to the child itself, or the
1667                 // parent?
1668                 // m_canvas->SetBackgroundColour(m_backgroundBrush.GetColour());
1669                 //
1670                 m_pCanvas->SetTransparent(FALSE);
1671             }
1672         }
1673     }
1674     COLORREF                        vNewColor = m_backgroundBrush.GetColour().GetPixel();
1675     (void)::GpiSetBackColor((HPS)m_hPS, (LONG)vNewColor);
1676 } // end of wxDC::SetBackground
1677
1678 void wxDC::SetBackgroundMode(
1679   int                               nMode
1680 )
1681 {
1682     m_backgroundMode = nMode;
1683 } // end of wxDC::SetBackgroundMode
1684
1685 void wxDC::SetLogicalFunction(
1686   int                               nFunction
1687 )
1688 {
1689     m_logicalFunction = nFunction;
1690     SetRop((WXHDC)m_hDC);
1691 } // wxDC::SetLogicalFunction
1692
1693 void wxDC::SetRop(
1694   WXHDC                             hDC
1695 )
1696 {
1697     if (!hDC || m_logicalFunction < 0)
1698         return;
1699
1700     LONG                            lCRop;
1701     switch (m_logicalFunction)
1702     {
1703         case wxXOR:
1704             lCRop = FM_XOR;
1705             break;
1706
1707         case wxINVERT:
1708             lCRop = FM_INVERT;
1709             break;
1710
1711         case wxOR_REVERSE:
1712             lCRop = FM_MERGESRCNOT;
1713             break;
1714
1715         case wxAND_REVERSE:
1716             lCRop = FM_NOTMASKSRC;
1717             break;
1718
1719         case wxCLEAR:
1720             lCRop = FM_ONE;
1721             break;
1722
1723         case wxSET:
1724             lCRop = FM_ZERO;
1725             break;
1726
1727         case wxSRC_INVERT:
1728             lCRop = FM_MERGENOTSRC;
1729             break;
1730
1731         case wxOR_INVERT:
1732             lCRop = FM_MERGESRCNOT;
1733             break;
1734
1735         case wxAND:
1736             lCRop = FM_AND;
1737             break;
1738
1739         case wxOR:
1740             lCRop = FM_OR;
1741             break;
1742
1743         case wxAND_INVERT:
1744             lCRop = FM_SUBTRACT;
1745             break;
1746
1747         case wxEQUIV:
1748         case wxNAND:
1749         case wxCOPY:
1750         default:
1751             lCRop = FM_OVERPAINT;
1752             break;
1753     }
1754     ::GpiSetMix((HPS)hDC, lCRop);
1755 } // end of wxDC::SetRop
1756
1757 bool wxDC::StartDoc(
1758   const wxString&                   rsMessage
1759 )
1760 {
1761     // We might be previewing, so return TRUE to let it continue.
1762     return TRUE;
1763 } // end of wxDC::StartDoc
1764
1765 void wxDC::EndDoc()
1766 {
1767 } // end of wxDC::EndDoc
1768
1769 void wxDC::StartPage()
1770 {
1771 } // end of wxDC::StartPage
1772
1773 void wxDC::EndPage()
1774 {
1775 } // end of wxDC::EndPage
1776
1777 // ---------------------------------------------------------------------------
1778 // text metrics
1779 // ---------------------------------------------------------------------------
1780
1781 wxCoord wxDC::GetCharHeight() const
1782 {
1783     FONTMETRICS                     vFM; // metrics structure
1784
1785     ::GpiQueryFontMetrics( m_hPS
1786                           ,sizeof(FONTMETRICS)
1787                           ,&vFM
1788                          );
1789     return YDEV2LOGREL(vFM.lXHeight);
1790 }
1791
1792 wxCoord wxDC::GetCharWidth() const
1793 {
1794     FONTMETRICS                     vFM; // metrics structure
1795
1796     ::GpiQueryFontMetrics( m_hPS
1797                           ,sizeof(FONTMETRICS)
1798                           ,&vFM
1799                          );
1800     return XDEV2LOGREL(vFM.lAveCharWidth);
1801 }
1802
1803 void wxDC::DoGetTextExtent(
1804   const wxString&                   rsString
1805 , wxCoord*                          pvX
1806 , wxCoord*                          pvY
1807 , wxCoord*                          pvDescent
1808 , wxCoord*                          pvExternalLeading
1809 , wxFont*                           pTheFont
1810 ) const
1811 {
1812     POINTL                          avPoint[TXTBOX_COUNT];
1813     POINTL                          vPtMin;
1814     POINTL                          vPtMax;
1815     int                             i;
1816     int                             l;
1817     FONTMETRICS                     vFM; // metrics structure
1818     BOOL                            bRc;
1819     char*                           pStr;
1820     ERRORID                         vErrorCode; // last error id code
1821     wxFont*                         pFontToUse = (wxFont*)pTheFont;
1822
1823     char                            zMsg[128]; // DEBUG
1824     wxString                        sError;
1825
1826     if (!pFontToUse)
1827         pFontToUse = (wxFont*)&m_font;
1828     l = rsString.length();
1829     pStr = (PCH) rsString.c_str();
1830
1831     //
1832     // In world coordinates.
1833     //
1834     bRc = ::GpiQueryTextBox( m_hPS
1835                             ,l
1836                             ,pStr
1837                             ,TXTBOX_COUNT // return maximum information
1838                             ,avPoint      // array of coordinates points
1839                            );
1840     if(!bRc)
1841     {
1842        vErrorCode = ::WinGetLastError(wxGetInstance());
1843        sError = wxPMErrorToStr(vErrorCode);
1844        // DEBUG
1845        sprintf(zMsg, "GpiQueryTextBox for %s: failed with Error: %x - %s", pStr, vErrorCode, sError.c_str());
1846        (void)wxMessageBox( "wxWindows Menu sample"
1847                           ,zMsg
1848                           ,wxICON_INFORMATION
1849                          );
1850     }
1851
1852     vPtMin.x = avPoint[0].x;
1853     vPtMax.x = avPoint[0].x;
1854     vPtMin.y = avPoint[0].y;
1855     vPtMax.y = avPoint[0].y;
1856     for (i = 1; i < 4; i++)
1857     {
1858         if(vPtMin.x > avPoint[i].x) vPtMin.x = avPoint[i].x;
1859         if(vPtMin.y > avPoint[i].y) vPtMin.y = avPoint[i].y;
1860         if(vPtMax.x < avPoint[i].x) vPtMax.x = avPoint[i].x;
1861         if(vPtMax.y < avPoint[i].y) vPtMax.y = avPoint[i].y;
1862     }
1863     ::GpiQueryFontMetrics( m_hPS
1864                           ,sizeof(FONTMETRICS)
1865                           ,&vFM
1866                          );
1867
1868     if (pvX)
1869         *pvX = (wxCoord)(vPtMax.x - vPtMin.x + 1);
1870     if (pvY)
1871         *pvY = (wxCoord)(vPtMax.y - vPtMin.y + 1);
1872     if (pvDescent)
1873         *pvDescent = vFM.lMaxDescender;
1874     if (pvExternalLeading)
1875         *pvExternalLeading = vFM.lExternalLeading;
1876 }
1877
1878 void wxDC::SetMapMode(
1879   int                               nMode
1880 )
1881 {
1882     int                             nPixelWidth = 0;
1883     int                             nPixelHeight = 0;
1884     int                             nMmWidth = 1;
1885     int                             nMmHeight = 1;
1886     LONG                            lArray[CAPS_VERTICAL_RESOLUTION];
1887
1888     m_mappingMode = nMode;
1889
1890     if(::DevQueryCaps( m_hDC
1891                       ,CAPS_FAMILY
1892                       ,CAPS_VERTICAL_RESOLUTION
1893                       ,lArray
1894                      ))
1895     {
1896         LONG                        lHorzRes;
1897         LONG                        lVertRes;
1898
1899         nPixelWidth    = lArray[CAPS_WIDTH];
1900         nPixelHeight   = lArray[CAPS_HEIGHT];
1901         lHorzRes  = lArray[CAPS_HORIZONTAL_RESOLUTION]; // returns pel/meter
1902         lVertRes  = lArray[CAPS_VERTICAL_RESOLUTION];   // returns pel/meter
1903         nMmWidth  = (lHorzRes/1000) * nPixelWidth;
1904         nMmWidth = (lVertRes/1000) * nPixelHeight;
1905     }
1906     if ((nPixelWidth == 0) || (nPixelHeight == 0) || (nMmWidth == 0) || (nMmHeight == 0))
1907     {
1908         return;
1909     }
1910
1911     double                          dMm2pixelsX = nPixelWidth/nMmWidth;
1912     double                          dMm2pixelsY = nPixelHeight/nMmHeight;
1913
1914     switch (nMode)
1915     {
1916         case wxMM_TWIPS:
1917             m_logicalScaleX = (twips2mm * dMm2pixelsX);
1918             m_logicalScaleY = (twips2mm * dMm2pixelsY);
1919             break;
1920
1921         case wxMM_POINTS:
1922             m_logicalScaleX = (pt2mm * dMm2pixelsX);
1923             m_logicalScaleY = (pt2mm * dMm2pixelsY);
1924             break;
1925
1926         case wxMM_METRIC:
1927             m_logicalScaleX = dMm2pixelsX;
1928             m_logicalScaleY = dMm2pixelsY;
1929             break;
1930
1931         case wxMM_LOMETRIC:
1932             m_logicalScaleX = (dMm2pixelsX/10.0);
1933             m_logicalScaleY = (dMm2pixelsY/10.0);
1934             break;
1935
1936         case wxMM_TEXT:
1937         default:
1938             m_logicalScaleX = 1.0;
1939             m_logicalScaleY = 1.0;
1940             break;
1941     }
1942     SIZEL                           vSize;
1943     ULONG                           ulOptions;
1944
1945     ulOptions = ::GpiQueryPS(m_hPS, &vSize);
1946     if (!ulOptions & PU_ARBITRARY)
1947     {
1948         ulOptions = PU_ARBITRARY | GPIF_DEFAULT;
1949         ::GpiSetPS(m_hPS, &vSize, ulOptions);
1950     }
1951     m_nWindowExtX = (int)MS_XDEV2LOG(VIEWPORT_EXTENT);
1952     m_nWindowExtY = (int)MS_YDEV2LOG(VIEWPORT_EXTENT);
1953     // ????
1954 }; // end of wxDC::SetMapMode
1955
1956 void wxDC::SetUserScale(
1957   double                            dX
1958 , double                            dY
1959 )
1960 {
1961     m_userScaleX = dX;
1962     m_userScaleY = dY;
1963
1964     SetMapMode(m_mappingMode);
1965 } // end of wxDC::SetUserScale
1966
1967 void wxDC::SetAxisOrientation(
1968   bool                              bXLeftRight
1969 , bool                              bYBottomUp
1970 )
1971 {
1972     m_signX = bXLeftRight ? 1 : -1;
1973     m_signY = bYBottomUp ? -1 : 1;
1974
1975     SetMapMode(m_mappingMode);
1976 } // end of wxDC::SetAxisOrientation
1977
1978 void wxDC::SetSystemScale(
1979   double                            dX
1980 , double                            dY
1981 )
1982 {
1983     m_scaleX = dX;
1984     m_scaleY = dY;
1985
1986     SetMapMode(m_mappingMode);
1987 } // end of wxDC::SetSystemScale
1988
1989 void wxDC::SetLogicalOrigin(
1990   wxCoord                           vX
1991 , wxCoord                           vY
1992 )
1993 {
1994     RECTL                           vRect;
1995
1996     ::GpiQueryPageViewport( m_hPS
1997                            ,&vRect
1998                           );
1999     vRect.xRight -= vX;
2000     vRect.yTop += vY;
2001     vRect.xLeft = vX;
2002     vRect.yBottom = vY;
2003     ::GpiSetPageViewport( m_hPS
2004                          ,&vRect
2005                         );
2006 }; // end of wxDC::SetLogicalOrigin
2007
2008 void wxDC::SetDeviceOrigin(
2009   wxCoord                           vX
2010 , wxCoord                           vY
2011 )
2012 {
2013     RECTL                           vRect;
2014
2015     m_deviceOriginX = vX;
2016     m_deviceOriginY = vY;
2017     ::GpiQueryPageViewport( m_hPS
2018                            ,&vRect
2019                           );
2020     vRect.xLeft += vX;
2021     vRect.xRight += vX;
2022     vRect.yBottom -= vY;
2023     vRect.yTop -= vY;
2024     ::GpiSetPageViewport( m_hPS
2025                          ,&vRect
2026                         );
2027 }; // end of wxDC::SetDeviceOrigin
2028
2029 // ---------------------------------------------------------------------------
2030 // coordinates transformations
2031 // ---------------------------------------------------------------------------
2032
2033 wxCoord wxDCBase::DeviceToLogicalX(wxCoord x) const
2034 {
2035     return (wxCoord) (((x) - m_deviceOriginX)/(m_logicalScaleX*m_userScaleX*m_signX*m_scaleX) - m_logicalOriginX);
2036 }
2037
2038 wxCoord wxDCBase::DeviceToLogicalXRel(wxCoord x) const
2039 {
2040         // axis orientation is not taken into account for conversion of a distance
2041     return (wxCoord) ((x)/(m_logicalScaleX*m_userScaleX*m_scaleX));
2042 }
2043
2044 wxCoord wxDCBase::DeviceToLogicalY(wxCoord y) const
2045 {
2046     return (wxCoord) (((y) - m_deviceOriginY)/(m_logicalScaleY*m_userScaleY*m_signY*m_scaleY) - m_logicalOriginY);
2047 }
2048
2049 wxCoord wxDCBase::DeviceToLogicalYRel(wxCoord y) const
2050 {
2051         // axis orientation is not taken into account for conversion of a distance
2052     return (wxCoord) ((y)/(m_logicalScaleY*m_userScaleY*m_scaleY));
2053 }
2054
2055 wxCoord wxDCBase::LogicalToDeviceX(wxCoord x) const
2056 {
2057     return (wxCoord) ((x - m_logicalOriginX)*m_logicalScaleX*m_userScaleX*m_signX*m_scaleX + m_deviceOriginX);
2058 }
2059
2060 wxCoord wxDCBase::LogicalToDeviceXRel(wxCoord x) const
2061 {
2062         // axis orientation is not taken into account for conversion of a distance
2063     return (wxCoord) (x*m_logicalScaleX*m_userScaleX*m_scaleX);
2064 }
2065
2066 wxCoord wxDCBase::LogicalToDeviceY(wxCoord y) const
2067 {
2068     return (wxCoord) ((y - m_logicalOriginY)*m_logicalScaleY*m_userScaleY*m_signY*m_scaleY + m_deviceOriginY);
2069 }
2070
2071 wxCoord wxDCBase::LogicalToDeviceYRel(wxCoord y) const
2072 {
2073         // axis orientation is not taken into account for conversion of a distance
2074     return (wxCoord) (y*m_logicalScaleY*m_userScaleY*m_scaleY);
2075 }
2076
2077 // ---------------------------------------------------------------------------
2078 // bit blit
2079 // ---------------------------------------------------------------------------
2080
2081 bool wxDC::DoBlit(
2082   wxCoord                           vXdest
2083 , wxCoord                           vYdest
2084 , wxCoord                           vWidth
2085 , wxCoord                           vHeight
2086 , wxDC*                             pSource
2087 , wxCoord                           vXsrc
2088 , wxCoord                           vYsrc
2089 , int                               nRop
2090 , bool                              bUseMask
2091 , wxCoord                           vXsrcMask
2092 , wxCoord                           vYsrcMask
2093 )
2094 {
2095     wxMask*                         pMask = NULL;
2096     CHARBUNDLE                      vCbnd;
2097     COLORREF                        vOldTextColor;
2098     COLORREF                        vOldBackground = ::GpiQueryBackColor(m_hPS);
2099
2100     if (bUseMask)
2101     {
2102         const wxBitmap&             rBmp = pSource->m_vSelectedBitmap;
2103
2104         pMask = rBmp.GetMask();
2105         if (!(rBmp.Ok() && pMask && pMask->GetMaskBitmap()))
2106         {
2107             bUseMask = FALSE;
2108         }
2109     }
2110
2111     ::GpiQueryAttrs( m_hPS
2112                     ,PRIM_CHAR
2113                     ,CBB_COLOR
2114                     ,&vCbnd
2115                    );
2116     vOldTextColor = (COLORREF)vCbnd.lColor;
2117
2118     if (m_textForegroundColour.Ok())
2119     {
2120         vCbnd.lColor = (LONG)m_textForegroundColour.GetPixel();
2121         ::GpiSetAttrs( m_hPS           // presentation-space handle
2122                       ,PRIM_CHAR       // Char primitive.
2123                       ,CBB_COLOR       // sets color.
2124                       ,0
2125                       ,&vCbnd          // buffer for attributes.
2126                      );
2127     }
2128     if (m_textBackgroundColour.Ok())
2129     {
2130         ::GpiSetBackColor(m_hPS, (LONG)m_textBackgroundColour.GetPixel());
2131     }
2132
2133     LONG                            lRop = ROP_SRCCOPY;
2134
2135     switch (nRop)
2136     {
2137         case wxXOR:          lRop = ROP_SRCINVERT;        break;
2138         case wxINVERT:       lRop = ROP_DSTINVERT;        break;
2139         case wxOR_REVERSE:   lRop = 0x00DD0228;           break;
2140         case wxAND_REVERSE:  lRop = ROP_SRCERASE;         break;
2141         case wxCLEAR:        lRop = ROP_ZERO;             break;
2142         case wxSET:          lRop = ROP_ONE;              break;
2143         case wxOR_INVERT:    lRop = ROP_MERGEPAINT;       break;
2144         case wxAND:          lRop = ROP_SRCAND;           break;
2145         case wxOR:           lRop = ROP_SRCPAINT;         break;
2146         case wxEQUIV:        lRop = 0x00990066;           break;
2147         case wxNAND:         lRop = 0x007700E6;           break;
2148         case wxAND_INVERT:   lRop = 0x00220326;           break;
2149         case wxCOPY:         lRop = ROP_SRCCOPY;          break;
2150         case wxNO_OP:        lRop = ROP_NOTSRCERASE;      break;
2151         case wxSRC_INVERT:   lRop = ROP_SRCINVERT;        break;
2152         case wxNOR:          lRop = ROP_NOTSRCCOPY;       break;
2153         default:
2154            wxFAIL_MSG( wxT("unsupported logical function") );
2155            return FALSE;
2156     }
2157
2158     bool                            bSuccess;
2159
2160     if (bUseMask)
2161     {
2162         //
2163         // Blit bitmap with mask
2164         //
2165
2166         //
2167         // Create a temp buffer bitmap and DCs/PSs to access it and the mask
2168         //
2169         HDC                             hDCMask;
2170         HDC                             hDCBuffer;
2171         HPS                             hPSMask;
2172         HPS                             hPSBuffer;
2173         DEVOPENSTRUC                    vDOP = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
2174         BITMAPINFOHEADER2               vBmpHdr;
2175         HBITMAP                         hBufBitmap;
2176         SIZEL                           vSize = {0, 0};
2177         LONG                            rc;
2178
2179         memset(&vBmpHdr, 0, sizeof(BITMAPINFOHEADER2));
2180         vBmpHdr.cbFix     = sizeof(BITMAPINFOHEADER2);
2181         vBmpHdr.cx        = vWidth;
2182         vBmpHdr.cy        = vHeight;
2183         vBmpHdr.cPlanes   = 1;
2184         vBmpHdr.cBitCount = 24;
2185
2186 #if wxUSE_DC_CACHEING
2187         if (TRUE)
2188         {
2189             //
2190             // create a temp buffer bitmap and DCs to access it and the mask
2191             //
2192             wxDCCacheEntry*         pDCCacheEntry1    = FindDCInCache( NULL
2193                                                                       ,pSource->GetHPS()
2194                                                                      );
2195             wxDCCacheEntry*         pDCCacheEntry2    = FindDCInCache( pDCCacheEntry1
2196                                                                       ,GetHPS()
2197                                                                      );
2198             wxDCCacheEntry*         pBitmapCacheEntry = FindBitmapInCache( GetHPS()
2199                                                                           ,vWidth
2200                                                                           ,vHeight
2201                                                                          );
2202
2203             hPSMask = pDCCacheEntry1->m_hPS;
2204             hDCBuffer = (HDC)pDCCacheEntry2->m_hPS;
2205             hBufBitmap = (HBITMAP)pBitmapCacheEntry->m_hBitmap;
2206         }
2207         else
2208 #endif
2209         {
2210             hDCMask = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDOP, NULLHANDLE);
2211             hDCBuffer = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDOP, NULLHANDLE);
2212             hPSMask = ::GpiCreatePS(vHabmain, hDCMask, &vSize, PU_PELS | GPIT_MICRO | GPIA_ASSOC);
2213             hPSBuffer = ::GpiCreatePS(vHabmain, hDCBuffer, &vSize, PU_PELS | GPIT_MICRO | GPIA_ASSOC);
2214             hBufBitmap = ::GpiCreateBitmap(GetHPS(), &vBmpHdr, 0L, NULL, NULL);
2215         }
2216
2217         POINTL                          aPoint1[4] = { 0, 0
2218                                                       ,vWidth, vHeight
2219                                                       ,vXdest, vYdest
2220                                                       ,vXdest + vWidth, vYdest + vHeight
2221                                                      };
2222         POINTL                          aPoint2[4] = { 0, 0
2223                                                       ,vWidth, vHeight
2224                                                       ,vXsrc, vYsrc
2225                                                       ,vXsrc + vWidth, vYsrc + vHeight
2226                                                      };
2227         POINTL                          aPoint3[4] = { vXdest, vYdest
2228                                                       ,vXdest + vWidth, vYdest + vHeight
2229                                                       ,vXsrc, vYsrc
2230                                                       ,vXsrc + vWidth, vYsrc + vHeight
2231                                                      };
2232         POINTL                          aPoint4[4] = { vXdest, vYdest
2233                                                       ,vXdest + vWidth, vYdest + vHeight
2234                                                       ,0, 0
2235                                                       ,vWidth, vHeight
2236                                                      };
2237         ::GpiSetBitmap(hPSMask, (HBITMAP) pMask->GetMaskBitmap());
2238         ::GpiSetBitmap(hPSBuffer, (HBITMAP) hBufBitmap);
2239
2240         //
2241         // Copy dest to buffer
2242         //
2243         rc = ::GpiBitBlt( hPSBuffer
2244                          ,GetHPS()
2245                          ,4L
2246                          ,aPoint1
2247                          ,ROP_SRCCOPY
2248                          ,BBO_IGNORE
2249                         );
2250         if (rc == GPI_ERROR)
2251         {
2252             wxLogLastError(wxT("BitBlt"));
2253         }
2254
2255         //
2256         // Copy src to buffer using selected raster op
2257         //
2258         rc = ::GpiBitBlt( hPSBuffer
2259                          ,GetHPS()
2260                          ,4L
2261                          ,aPoint2
2262                          ,lRop
2263                          ,BBO_IGNORE
2264                         );
2265         if (rc == GPI_ERROR)
2266         {
2267             wxLogLastError(wxT("BitBlt"));
2268         }
2269
2270         //
2271         // Set masked area in buffer to BLACK (pixel value 0)
2272         //
2273         COLORREF                        vPrevBkCol = ::GpiQueryBackColor(GetHPS());
2274         COLORREF                        vPrevCol = ::GpiQueryColor(GetHPS());
2275
2276         ::GpiSetBackColor(GetHPS(), OS2RGB(255, 255, 255));
2277         ::GpiSetColor(GetHPS(), OS2RGB(0, 0, 0));
2278
2279         rc = ::GpiBitBlt( hPSBuffer
2280                          ,hPSMask
2281                          ,4L
2282                          ,aPoint2
2283                          ,ROP_SRCAND
2284                          ,BBO_IGNORE
2285                         );
2286         if (rc == GPI_ERROR)
2287         {
2288             wxLogLastError(wxT("BitBlt"));
2289         }
2290
2291         //
2292         // Set unmasked area in dest to BLACK
2293         //
2294         ::GpiSetBackColor(GetHPS(), OS2RGB(0, 0, 0));
2295         ::GpiSetColor(GetHPS(), OS2RGB(255, 255, 255));
2296         rc = ::GpiBitBlt( GetHPS()
2297                          ,hPSMask
2298                          ,4L
2299                          ,aPoint3
2300                          ,ROP_SRCAND
2301                          ,BBO_IGNORE
2302                         );
2303         if (rc == GPI_ERROR)
2304         {
2305             wxLogLastError(wxT("BitBlt"));
2306         }
2307
2308         //
2309         // Restore colours to original values
2310         //
2311         ::GpiSetBackColor(GetHPS(), vPrevBkCol);
2312         ::GpiSetColor(GetHPS(), vPrevCol);
2313
2314         //
2315         // OR buffer to dest
2316         //
2317         rc = ::GpiBitBlt( GetHPS()
2318                          ,hPSMask
2319                          ,4L
2320                          ,aPoint4
2321                          ,ROP_SRCPAINT
2322                          ,BBO_IGNORE
2323                         );
2324         if (rc == GPI_ERROR)
2325         {
2326             bSuccess = FALSE;
2327             wxLogLastError(wxT("BitBlt"));
2328         }
2329
2330         //
2331         // Tidy up temporary DCs and bitmap
2332         //
2333         ::GpiSetBitmap(hPSMask, NULLHANDLE);
2334         ::GpiSetBitmap(hPSBuffer, NULLHANDLE);
2335 #if !wxUSE_DC_CACHEING
2336         ::GpiDestroyPS(hPSMask);
2337         ::GpiDestroyPS(hPSBuffer);
2338         ::DevCloseDC(hDCMask);
2339         ::DevCloseDC(hDCBuffer);
2340         ::GpiDeleteBitmap(hBufBitmap);
2341 #endif
2342         bSuccess = TRUE;
2343     }
2344     else // no mask, just BitBlt() it
2345     {
2346         POINTL                          aPoint[4] = { vXdest, vYdest
2347                                                      ,vXdest + vWidth, vYdest + vHeight
2348                                                      ,vXsrc, vYsrc
2349                                                      ,vXsrc + vWidth, vYsrc + vHeight
2350                                                     };
2351
2352         bSuccess = (::GpiBitBlt( m_hPS
2353                                 ,pSource->GetHPS()
2354                                 ,4L
2355                                 ,aPoint
2356                                 ,lRop
2357                                 ,BBO_IGNORE
2358                                ) != GPI_ERROR);
2359         if (!bSuccess )
2360         {
2361             wxLogLastError(wxT("BitBlt"));
2362         }
2363     }
2364     vCbnd.lColor = (LONG)vOldTextColor;
2365     ::GpiSetAttrs( m_hPS           // presentation-space handle
2366                   ,PRIM_CHAR       // Char primitive.
2367                   ,CBB_COLOR       // sets color.
2368                   ,0
2369                   ,&vCbnd          // buffer for attributes.
2370                  );
2371     ::GpiSetBackColor(m_hPS, (LONG)vOldBackground);
2372     return bSuccess;
2373 }
2374
2375 void wxDC::DoGetSize(
2376   int*                              pnWidth
2377 , int*                              pnHeight
2378 ) const
2379 {
2380     LONG                            lArray[CAPS_HEIGHT];
2381
2382     if(::DevQueryCaps( m_hDC
2383                       ,CAPS_FAMILY
2384                       ,CAPS_HEIGHT
2385                       ,lArray
2386                      ))
2387     {
2388         *pnWidth  = lArray[CAPS_WIDTH];
2389         *pnHeight = lArray[CAPS_HEIGHT];
2390     }
2391 }; // end of wxDC::DoGetSize(
2392
2393 void wxDC::DoGetSizeMM(
2394   int*                              pnWidth
2395 , int*                              pnHeight
2396 ) const
2397 {
2398     LONG                            lArray[CAPS_VERTICAL_RESOLUTION];
2399
2400     if(::DevQueryCaps( m_hDC
2401                       ,CAPS_FAMILY
2402                       ,CAPS_VERTICAL_RESOLUTION
2403                       ,lArray
2404                      ))
2405     {
2406         int                         nWidth;
2407         int                         nHeight;
2408         int                         nHorzRes;
2409         int                         nVertRes;
2410
2411         nWidth    = lArray[CAPS_WIDTH];
2412         nHeight   = lArray[CAPS_HEIGHT];
2413         nHorzRes  = lArray[CAPS_HORIZONTAL_RESOLUTION]; // returns pel/meter
2414         nVertRes  = lArray[CAPS_VERTICAL_RESOLUTION];   // returns pel/meter
2415         nWidth  = (nHorzRes/1000) * nWidth;
2416         nHeight = (nVertRes/1000) * nHeight;
2417     }
2418 }; // end of wxDC::DoGetSizeMM
2419
2420 wxSize wxDC::GetPPI() const
2421 {
2422     LONG                            lArray[CAPS_VERTICAL_RESOLUTION];
2423     int                             nWidth;
2424     int                             nHeight;
2425
2426     if(::DevQueryCaps( m_hDC
2427                       ,CAPS_FAMILY
2428                       ,CAPS_VERTICAL_RESOLUTION
2429                       ,lArray
2430                      ))
2431     {
2432         int                         nPelWidth;
2433         int                         nPelHeight;
2434         int                         nHorzRes;
2435         int                         nVertRes;
2436
2437         nPelWidth  = lArray[CAPS_WIDTH];
2438         nPelHeight = lArray[CAPS_HEIGHT];
2439         nHorzRes   = lArray[CAPS_HORIZONTAL_RESOLUTION]; // returns pel/meter
2440         nVertRes   = lArray[CAPS_VERTICAL_RESOLUTION];   // returns pel/meter
2441         nWidth   = (nHorzRes/39.3) * nPelWidth;
2442         nHeight  = (nVertRes/39.3) * nPelHeight;
2443     }
2444     return (wxSize(nWidth,nHeight));
2445 } // end of wxDC::GetPPI
2446
2447 void wxDC::SetLogicalScale(
2448   double                            dX
2449 , double                            dY
2450 )
2451 {
2452     m_logicalScaleX = dX;
2453     m_logicalScaleY = dY;
2454 }; // end of wxDC::SetLogicalScale
2455
2456 #if WXWIN_COMPATIBILITY
2457 void wxDC::DoGetTextExtent(const wxString& string, float *x, float *y,
2458                          float *descent, float *externalLeading,
2459                          wxFont *theFont, bool use16bit) const
2460 {
2461     wxCoord x1, y1, descent1, externalLeading1;
2462     GetTextExtent(string, & x1, & y1, & descent1, & externalLeading1, theFont, use16bit);
2463     *x = x1; *y = y1;
2464     if (descent)
2465         *descent = descent1;
2466     if (externalLeading)
2467         *externalLeading = externalLeading1;
2468 }
2469 #endif
2470