windows/graphics.c

   1 /*
   2  * GDI graphics operations
   3  *
   4  * Copyright 1993, 1994 Alexandre Julliard
   5  */
   6
   7 #include <math.h>
   8 #include <stdlib.h>
   9 #include <X11/Xlib.h>
  10 #include <X11/Xutil.h>
  11 #include <X11/Intrinsic.h>
  12 #ifndef PI
  13 #define PI M_PI
  14 #endif
  15 #include "dc.h"
  16 #include "bitmap.h"
  17 #include "callback.h"
  18 #include "metafile.h"
  19 #include "syscolor.h"
  20 #include "stddebug.h"
  21 #include "color.h"
  22 #include "region.h"
  23 #include "debug.h"
  24 #include "xmalloc.h"
  25
  26 /***********************************************************************
  27  *           LineTo    (GDI.19)
  28  */
  29 BOOL LineTo( HDC hdc, short x, short y )
  30 {
  31     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
  32     if (!dc)
  33     {
  34         dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
  35         if (!dc) return FALSE;
  36         MF_MetaParam2(dc, META_LINETO, x, y);
  37         return TRUE;
  38     }
  39
  40     if (DC_SetupGCForPen( dc ))
  41         XDrawLine(display, dc->u.x.drawable, dc->u.x.gc,
  42                   dc->w.DCOrgX + XLPTODP( dc, dc->w.CursPosX ),
  43                   dc->w.DCOrgY + YLPTODP( dc, dc->w.CursPosY ),
  44                   dc->w.DCOrgX + XLPTODP( dc, x ),
  45                   dc->w.DCOrgY + YLPTODP( dc, y ) );
  46     dc->w.CursPosX = x;
  47     dc->w.CursPosY = y;
  48     return TRUE;
  49 }
  50
  51
  52 /***********************************************************************
  53  *           MoveTo    (GDI.20)
  54  */
  55 DWORD MoveTo( HDC hdc, short x, short y )
  56 {
  57     short oldx, oldy;
  58     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
  59     if (!dc)
  60     {
  61         dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
  62         if (!dc) return FALSE;
  63         MF_MetaParam2(dc, META_MOVETO, x, y);
  64         return 0;
  65     }
  66
  67     oldx = dc->w.CursPosX;
  68     oldy = dc->w.CursPosY;
  69     dc->w.CursPosX = x;
  70     dc->w.CursPosY = y;
  71     return oldx | (oldy << 16);
  72 }
  73
  74
  75 /***********************************************************************
  76  *           MoveToEx    (GDI.483)
  77  */
  78 BOOL MoveToEx( HDC hdc, short x, short y, LPPOINT pt )
  79 {
  80     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
  81     if (!dc) return FALSE;
  82     if (pt)
  83     {
  84         pt->x = dc->w.CursPosX;
  85         pt->y = dc->w.CursPosY;
  86     }
  87     dc->w.CursPosX = x;
  88     dc->w.CursPosY = y;
  89     return TRUE;
  90 }
  91
  92
  93 /***********************************************************************
  94  *           GRAPH_DrawArc
  95  *
  96  * Helper functions for Arc(), Chord() and Pie().
  97  * 'lines' is the number of lines to draw: 0 for Arc, 1 for Chord, 2 for Pie.
  98  */
  99 static BOOL GRAPH_DrawArc( HDC hdc, int left, int top, int right, int bottom,
 100                     int xstart, int ystart, int xend, int yend, int lines )
 101 {
 102     int xcenter, ycenter, istart_angle, idiff_angle, tmp;
 103     double start_angle, end_angle;
 104     XPoint points[3];
 105     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 106     if (!dc)
 107     {
 108         dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
 109         if (!dc) return FALSE;
 110         switch (lines)
 111         {
 112         case 0:
 113             MF_MetaParam8(dc, META_ARC, left, top, right, bottom,
 114                           xstart, ystart, xend, yend);
 115             break;
 116
 117         case 1:
 118             MF_MetaParam8(dc, META_CHORD, left, top, right, bottom,
 119                           xstart, ystart, xend, yend);
 120             break;
 121
 122         case 2:
 123             MF_MetaParam8(dc, META_PIE, left, top, right, bottom,
 124                           xstart, ystart, xend, yend);
 125             break;
 126         }
 127         return 0;
 128     }
 129
 130     left   = XLPTODP( dc, left );
 131     top    = YLPTODP( dc, top );
 132     right  = XLPTODP( dc, right );
 133     bottom = YLPTODP( dc, bottom );
 134     xstart = XLPTODP( dc, xstart );
 135     ystart = YLPTODP( dc, ystart );
 136     xend   = XLPTODP( dc, xend );
 137     yend   = YLPTODP( dc, yend );
 138     if ((left == right) || (top == bottom)) return FALSE;
 139
 140     xcenter = (right + left) / 2;
 141     ycenter = (bottom + top) / 2;
 142     start_angle = atan2( (double)(ycenter-ystart)*(right-left),
 143                          (double)(xstart-xcenter)*(bottom-top) );
 144     end_angle   = atan2( (double)(ycenter-yend)*(right-left),
 145                          (double)(xend-xcenter)*(bottom-top) );
 146     istart_angle = (int)(start_angle * 180 * 64 / PI);
 147     idiff_angle  = (int)((end_angle - start_angle) * 180 * 64 / PI );
 148     if (idiff_angle <= 0) idiff_angle += 360 * 64;
 149     if (left > right) { tmp=left; left=right; right=tmp; }
 150     if (top > bottom) { tmp=top; top=bottom; bottom=tmp; }
 151
 152       /* Fill arc with brush if Chord() or Pie() */
 153
 154     if ((lines > 0) && DC_SetupGCForBrush( dc ))
 155     {
 156         XSetArcMode( display, dc->u.x.gc, (lines==1) ? ArcChord : ArcPieSlice);
 157         XFillArc( display, dc->u.x.drawable, dc->u.x.gc,
 158                  dc->w.DCOrgX + left, dc->w.DCOrgY + top,
 159                  right-left-1, bottom-top-1, istart_angle, idiff_angle );
 160     }
 161
 162       /* Draw arc and lines */
 163
 164     if (!DC_SetupGCForPen( dc )) return TRUE;
 165     XDrawArc( display, dc->u.x.drawable, dc->u.x.gc,
 166               dc->w.DCOrgX + left, dc->w.DCOrgY + top,
 167               right-left-1, bottom-top-1, istart_angle, idiff_angle );
 168     if (!lines) return TRUE;
 169
 170     points[0].x = dc->w.DCOrgX + xcenter + (int)(cos(start_angle) * (right-left) / 2);
 171     points[0].y = dc->w.DCOrgY + ycenter - (int)(sin(start_angle) * (bottom-top) / 2);
 172     points[1].x = dc->w.DCOrgX + xcenter + (int)(cos(end_angle) * (right-left) / 2);
 173     points[1].y = dc->w.DCOrgY + ycenter - (int)(sin(end_angle) * (bottom-top) / 2);
 174     if (lines == 2)
 175     {
 176         points[2] = points[1];
 177         points[1].x = dc->w.DCOrgX + xcenter;
 178         points[1].y = dc->w.DCOrgY + ycenter;
 179     }
 180     XDrawLines( display, dc->u.x.drawable, dc->u.x.gc,
 181                 points, lines+1, CoordModeOrigin );
 182     return TRUE;
 183 }
 184
 185
 186 /***********************************************************************
 187  *           Arc    (GDI.23)
 188  */
 189 BOOL Arc( HDC hdc, INT left, INT top, INT right, INT bottom,
 190           INT xstart, INT ystart, INT xend, INT yend )
 191 {
 192     return GRAPH_DrawArc( hdc, left, top, right, bottom,
 193                           xstart, ystart, xend, yend, 0 );
 194 }
 195
 196
 197 /***********************************************************************
 198  *           Pie    (GDI.26)
 199  */
 200 BOOL Pie( HDC hdc, INT left, INT top, INT right, INT bottom,
 201           INT xstart, INT ystart, INT xend, INT yend )
 202 {
 203     return GRAPH_DrawArc( hdc, left, top, right, bottom,
 204                           xstart, ystart, xend, yend, 2 );
 205 }
 206
 207
 208 /***********************************************************************
 209  *           Chord    (GDI.348)
 210  */
 211 BOOL Chord( HDC hdc, INT left, INT top, INT right, INT bottom,
 212             INT xstart, INT ystart, INT xend, INT yend )
 213 {
 214     return GRAPH_DrawArc( hdc, left, top, right, bottom,
 215                           xstart, ystart, xend, yend, 1 );
 216 }
 217
 218
 219 /***********************************************************************
 220  *           Ellipse    (GDI.24)
 221  */
 222 BOOL Ellipse( HDC hdc, INT left, INT top, INT right, INT bottom )
 223 {
 224     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 225     if (!dc)
 226     {
 227         dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
 228         if (!dc) return FALSE;
 229         MF_MetaParam4(dc, META_ELLIPSE, left, top, right, bottom);
 230         return 0;
 231     }
 232
 233     left   = XLPTODP( dc, left );
 234     top    = YLPTODP( dc, top );
 235     right  = XLPTODP( dc, right );
 236     bottom = YLPTODP( dc, bottom );
 237     if ((left == right) || (top == bottom)) return FALSE;
 238
 239     if (right < left) { INT tmp = right; right = left; left = tmp; }
 240     if (bottom < top) { INT tmp = bottom; bottom = top; top = tmp; }
 241
 242     if ((dc->u.x.pen.style == PS_INSIDEFRAME) &&
 243         (dc->u.x.pen.width < right-left-1) &&
 244         (dc->u.x.pen.width < bottom-top-1))
 245     {
 246         left   += dc->u.x.pen.width / 2;
 247         right  -= (dc->u.x.pen.width + 1) / 2;
 248         top    += dc->u.x.pen.width / 2;
 249         bottom -= (dc->u.x.pen.width + 1) / 2;
 250     }
 251
 252     if (DC_SetupGCForBrush( dc ))
 253         XFillArc( display, dc->u.x.drawable, dc->u.x.gc,
 254                   dc->w.DCOrgX + left, dc->w.DCOrgY + top,
 255                   right-left-1, bottom-top-1, 0, 360*64 );
 256     if (DC_SetupGCForPen( dc ))
 257         XDrawArc( display, dc->u.x.drawable, dc->u.x.gc,
 258                   dc->w.DCOrgX + left, dc->w.DCOrgY + top,
 259                   right-left-1, bottom-top-1, 0, 360*64 );
 260     return TRUE;
 261 }
 262
 263
 264 /***********************************************************************
 265  *           Rectangle    (GDI.27)
 266  */
 267 BOOL Rectangle( HDC hdc, INT left, INT top, INT right, INT bottom )
 268 {
 269     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 270     if (!dc)
 271     {
 272         dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
 273         if (!dc) return FALSE;
 274         MF_MetaParam4(dc, META_RECTANGLE, left, top, right, bottom);
 275         return TRUE;
 276     }
 277     left   = XLPTODP( dc, left );
 278     top    = YLPTODP( dc, top );
 279     right  = XLPTODP( dc, right );
 280     bottom = YLPTODP( dc, bottom );
 281
 282     if (right < left) { INT tmp = right; right = left; left = tmp; }
 283     if (bottom < top) { INT tmp = bottom; bottom = top; top = tmp; }
 284
 285     if ((left == right) || (top == bottom))
 286     {
 287         if (DC_SetupGCForPen( dc ))
 288             XDrawLine(display, dc->u.x.drawable, dc->u.x.gc,
 289                   dc->w.DCOrgX + left,
 290                   dc->w.DCOrgY + top,
 291                   dc->w.DCOrgX + right,
 292                   dc->w.DCOrgY + bottom);
 293         return TRUE;
 294     }
 295
 296     if ((dc->u.x.pen.style == PS_INSIDEFRAME) &&
 297         (dc->u.x.pen.width < right-left) &&
 298         (dc->u.x.pen.width < bottom-top))
 299     {
 300         left   += dc->u.x.pen.width / 2;
 301         right  -= (dc->u.x.pen.width + 1) / 2;
 302         top    += dc->u.x.pen.width / 2;
 303         bottom -= (dc->u.x.pen.width + 1) / 2;
 304     }
 305
 306     if (DC_SetupGCForBrush( dc ))
 307         XFillRectangle( display, dc->u.x.drawable, dc->u.x.gc,
 308                         dc->w.DCOrgX + left, dc->w.DCOrgY + top,
 309                         right-left, bottom-top );
 310     if (DC_SetupGCForPen( dc ))
 311         XDrawRectangle( display, dc->u.x.drawable, dc->u.x.gc,
 312                         dc->w.DCOrgX + left, dc->w.DCOrgY + top,
 313                         right-left-1, bottom-top-1 );
 314     return TRUE;
 315 }
 316
 317
 318 /***********************************************************************
 319  *           RoundRect    (GDI.28)
 320  */
 321 BOOL RoundRect( HDC hDC, INT left, INT top, INT right, INT bottom,
 322                 INT ell_width, INT ell_height )
 323 {
 324     DC * dc = (DC *) GDI_GetObjPtr(hDC, DC_MAGIC);
 325     if (!dc)
 326     {
 327         dc = (DC *)GDI_GetObjPtr(hDC, METAFILE_DC_MAGIC);
 328         if (!dc) return FALSE;
 329         MF_MetaParam6(dc, META_ROUNDRECT, left, top, right, bottom,
 330                       ell_width, ell_height);
 331         return TRUE;
 332     }
 333     dprintf_graphics(stddeb, "RoundRect(%d %d %d %d  %d %d\n",
 334         left, top, right, bottom, ell_width, ell_height);
 335
 336     left   = XLPTODP( dc, left );
 337     top    = YLPTODP( dc, top );
 338     right  = XLPTODP( dc, right );
 339     bottom = YLPTODP( dc, bottom );
 340     ell_width  = abs( ell_width * dc->w.VportExtX / dc->w.WndExtX );
 341     ell_height = abs( ell_height * dc->w.VportExtY / dc->w.WndExtY );
 342
 343     /* Fix the coordinates */
 344
 345     if (right < left) { INT tmp = right; right = left; left = tmp; }
 346     if (bottom < top) { INT tmp = bottom; bottom = top; top = tmp; }
 347     if (ell_width > right - left) ell_width = right - left;
 348     if (ell_height > bottom - top) ell_height = bottom - top;
 349
 350     if (DC_SetupGCForBrush( dc ))
 351     {
 352         if (ell_width && ell_height)
 353         {
 354             XFillArc( display, dc->u.x.drawable, dc->u.x.gc,
 355                       dc->w.DCOrgX + left, dc->w.DCOrgY + top,
 356                       ell_width, ell_height, 90 * 64, 90 * 64 );
 357             XFillArc( display, dc->u.x.drawable, dc->u.x.gc,
 358                       dc->w.DCOrgX + left, dc->w.DCOrgY + bottom - ell_height,
 359                       ell_width, ell_height, 180 * 64, 90 * 64 );
 360             XFillArc( display, dc->u.x.drawable, dc->u.x.gc,
 361                       dc->w.DCOrgX + right - ell_width,
 362                       dc->w.DCOrgY + bottom - ell_height,
 363                       ell_width, ell_height, 270 * 64, 90 * 64 );
 364             XFillArc( display, dc->u.x.drawable, dc->u.x.gc,
 365                       dc->w.DCOrgX + right - ell_width, dc->w.DCOrgY + top,
 366                       ell_width, ell_height, 0, 90 * 64 );
 367         }
 368         if (ell_width < right - left)
 369         {
 370             XFillRectangle( display, dc->u.x.drawable, dc->u.x.gc,
 371                             dc->w.DCOrgX + left + ell_width / 2,
 372                             dc->w.DCOrgY + top,
 373                             right - left - ell_width, ell_height / 2 );
 374             XFillRectangle( display, dc->u.x.drawable, dc->u.x.gc,
 375                             dc->w.DCOrgX + left + ell_width / 2,
 376                             dc->w.DCOrgY + bottom - (ell_height+1) / 2,
 377                             right - left - ell_width, (ell_height+1) / 2 );
 378         }
 379         if  (ell_height < bottom - top)
 380         {
 381             XFillRectangle( display, dc->u.x.drawable, dc->u.x.gc,
 382                             dc->w.DCOrgX + left,
 383                             dc->w.DCOrgY + top + ell_height / 2,
 384                             right - left, bottom - top - ell_height );
 385         }
 386     }
 387     if (DC_SetupGCForPen(dc))
 388     {
 389         if (ell_width && ell_height)
 390         {
 391             XDrawArc( display, dc->u.x.drawable, dc->u.x.gc,
 392                       dc->w.DCOrgX + left, dc->w.DCOrgY + top,
 393                       ell_width, ell_height, 90 * 64, 90 * 64 );
 394             XDrawArc( display, dc->u.x.drawable, dc->u.x.gc,
 395                       dc->w.DCOrgX + left, dc->w.DCOrgY + bottom - ell_height,
 396                       ell_width, ell_height, 180 * 64, 90 * 64 );
 397             XDrawArc( display, dc->u.x.drawable, dc->u.x.gc,
 398                       dc->w.DCOrgX + right - ell_width,
 399                       dc->w.DCOrgY + bottom - ell_height,
 400                       ell_width, ell_height, 270 * 64, 90 * 64 );
 401             XDrawArc( display, dc->u.x.drawable, dc->u.x.gc,
 402                       dc->w.DCOrgX + right - ell_width, dc->w.DCOrgY + top,
 403                       ell_width, ell_height, 0, 90 * 64 );
 404         }
 405         if (ell_width < right - left)
 406         {
 407             XDrawLine( display, dc->u.x.drawable, dc->u.x.gc,
 408                        dc->w.DCOrgX + left + ell_width / 2,
 409                        dc->w.DCOrgY + top,
 410                        dc->w.DCOrgX + right - ell_width / 2,
 411                        dc->w.DCOrgY + top );
 412             XDrawLine( display, dc->u.x.drawable, dc->u.x.gc,
 413                        dc->w.DCOrgX + left + ell_width / 2,
 414                        dc->w.DCOrgY + bottom,
 415                        dc->w.DCOrgX + right - ell_width / 2,
 416                        dc->w.DCOrgY + bottom );
 417         }
 418         if (ell_height < bottom - top)
 419         {
 420             XDrawLine( display, dc->u.x.drawable, dc->u.x.gc,
 421                        dc->w.DCOrgX + right,
 422                        dc->w.DCOrgY + top + ell_height / 2,
 423                        dc->w.DCOrgX + right,
 424                        dc->w.DCOrgY + bottom - ell_height / 2 );
 425             XDrawLine( display, dc->u.x.drawable, dc->u.x.gc,
 426                        dc->w.DCOrgX + left,
 427                        dc->w.DCOrgY + top + ell_height / 2,
 428                        dc->w.DCOrgX + left,
 429                        dc->w.DCOrgY + bottom - ell_height / 2 );
 430         }
 431     }
 432     return TRUE;
 433 }
 434
 435
 436 /***********************************************************************
 437  *           FillRect    (USER.81)
 438  */
 439 int FillRect( HDC hdc, LPRECT rect, HBRUSH hbrush )
 440 {
 441     HBRUSH prevBrush;
 442
 443     if ((rect->right <= rect->left) || (rect->bottom <= rect->top)) return 0;
 444     if (!(prevBrush = SelectObject( hdc, hbrush ))) return 0;
 445     PatBlt( hdc, rect->left, rect->top,
 446             rect->right - rect->left, rect->bottom - rect->top, PATCOPY );
 447     SelectObject( hdc, prevBrush );
 448     return 1;
 449 }
 450
 451
 452 /***********************************************************************
 453  *           InvertRect    (USER.82)
 454  */
 455 void InvertRect( HDC hdc, LPRECT rect )
 456 {
 457     if ((rect->right <= rect->left) || (rect->bottom <= rect->top)) return;
 458     PatBlt( hdc, rect->left, rect->top,
 459             rect->right - rect->left, rect->bottom - rect->top, DSTINVERT );
 460 }
 461
 462
 463 /***********************************************************************
 464  *           FrameRect    (USER.83)
 465  */
 466 int FrameRect( HDC hdc, LPRECT rect, HBRUSH hbrush )
 467 {
 468     HBRUSH prevBrush;
 469     int left, top, right, bottom;
 470
 471     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 472     if (!dc) return FALSE;
 473
 474     if ((rect->right <= rect->left) || (rect->bottom <= rect->top)) return 0;
 475     if (!(prevBrush = SelectObject( hdc, hbrush ))) return 0;
 476
 477     left   = XLPTODP( dc, rect->left );
 478     top    = YLPTODP( dc, rect->top );
 479     right  = XLPTODP( dc, rect->right );
 480     bottom = YLPTODP( dc, rect->bottom );
 481
 482     if (DC_SetupGCForBrush( dc ))
 483     {
 484         PatBlt( hdc, rect->left, rect->top, 1,
 485             rect->bottom - rect->top, PATCOPY );
 486         PatBlt( hdc, rect->right - 1, rect->top, 1,
 487             rect->bottom - rect->top, PATCOPY );
 488         PatBlt( hdc, rect->left, rect->top,
 489             rect->right - rect->left, 1, PATCOPY );
 490         PatBlt( hdc, rect->left, rect->bottom - 1,
 491             rect->right - rect->left, 1, PATCOPY );
 492         }
 493     SelectObject( hdc, prevBrush );
 494     return 1;
 495 }
 496
 497
 498 /***********************************************************************
 499  *           SetPixel    (GDI.31)
 500  */
 501 COLORREF SetPixel( HDC hdc, short x, short y, COLORREF color )
 502 {
 503     Pixel pixel;
 504     PALETTEENTRY entry;
 505
 506     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 507     if (!dc)
 508     {
 509         dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
 510         if (!dc) return 0;
 511         MF_MetaParam4(dc, META_SETPIXEL, x, y, HIWORD(color), LOWORD(color));
 512         return 1;
 513     }
 514
 515     x = dc->w.DCOrgX + XLPTODP( dc, x );
 516     y = dc->w.DCOrgY + YLPTODP( dc, y );
 517     pixel = COLOR_ToPhysical( dc, color );
 518
 519     XSetForeground( display, dc->u.x.gc, pixel );
 520     XSetFunction( display, dc->u.x.gc, GXcopy );
 521     XDrawPoint( display, dc->u.x.drawable, dc->u.x.gc, x, y );
 522
 523     if (screenDepth <= 8)
 524     {
 525         GetPaletteEntries( dc->w.hPalette, pixel, 1, &entry );
 526         return RGB( entry.peRed, entry.peGreen, entry.peBlue );
 527     }
 528     else return (COLORREF)pixel;
 529 }
 530
 531
 532 /***********************************************************************
 533  *           GetPixel    (GDI.83)
 534  */
 535 COLORREF GetPixel( HDC hdc, short x, short y )
 536 {
 537     PALETTEENTRY entry;
 538     XImage * image;
 539     WORD * mapping;
 540     int pixel;
 541
 542     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 543     if (!dc) return 0;
 544
 545 #ifdef SOLITAIRE_SPEED_HACK
 546     return 0;
 547 #endif
 548
 549     if (!PtVisible( hdc, x, y )) return 0;
 550
 551     x = dc->w.DCOrgX + XLPTODP( dc, x );
 552     y = dc->w.DCOrgY + YLPTODP( dc, y );
 553     image = XGetImage( display, dc->u.x.drawable, x, y,
 554                        1, 1, AllPlanes, ZPixmap );
 555     pixel = XGetPixel( image, 0, 0 );
 556     XDestroyImage( image );
 557
 558     if (screenDepth > 8) return pixel;
 559     mapping = (WORD *) GDI_HEAP_LIN_ADDR( dc->u.x.pal.hRevMapping );
 560     if (mapping) pixel = mapping[pixel];
 561     GetPaletteEntries( dc->w.hPalette, pixel, 1, &entry );
 562     return RGB( entry.peRed, entry.peGreen, entry.peBlue );
 563 }
 564
 565
 566 /***********************************************************************
 567  *           PaintRgn    (GDI.43)
 568  */
 569 BOOL PaintRgn( HDC hdc, HRGN hrgn )
 570 {
 571     RECT box;
 572     HRGN tmpVisRgn, prevVisRgn;
 573     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 574     if (!dc) return FALSE;
 575
 576       /* Modify visible region */
 577
 578     if (!(prevVisRgn = SaveVisRgn( hdc ))) return FALSE;
 579     if (!(tmpVisRgn = CreateRectRgn( 0, 0, 0, 0 )))
 580     {
 581         RestoreVisRgn( hdc );
 582         return FALSE;
 583     }
 584     CombineRgn( tmpVisRgn, prevVisRgn, hrgn, RGN_AND );
 585     SelectVisRgn( hdc, tmpVisRgn );
 586     DeleteObject( tmpVisRgn );
 587
 588       /* Fill the region */
 589
 590     GetRgnBox( dc->w.hGCClipRgn, &box );
 591     if (DC_SetupGCForBrush( dc ))
 592         XFillRectangle( display, dc->u.x.drawable, dc->u.x.gc,
 593                         dc->w.DCOrgX + box.left, dc->w.DCOrgY + box.top,
 594                         box.right-box.left, box.bottom-box.top );
 595
 596       /* Restore the visible region */
 597
 598     RestoreVisRgn( hdc );
 599     return TRUE;
 600 }
 601
 602
 603 /***********************************************************************
 604  *           FillRgn    (GDI.40)
 605  */
 606 BOOL FillRgn( HDC hdc, HRGN hrgn, HBRUSH hbrush )
 607 {
 608     BOOL retval;
 609     HBRUSH prevBrush = SelectObject( hdc, hbrush );
 610     if (!prevBrush) return FALSE;
 611     retval = PaintRgn( hdc, hrgn );
 612     SelectObject( hdc, prevBrush );
 613     return retval;
 614 }
 615
 616 /***********************************************************************
 617  *           FrameRgn     (GDI.41)
 618  */
 619 BOOL FrameRgn( HDC hdc, HRGN hrgn, HBRUSH hbrush, int nWidth, int nHeight )
 620 {
 621     HRGN tmp = CreateRectRgn( 0, 0, 0, 0 );
 622     if(!REGION_FrameRgn( tmp, hrgn, nWidth, nHeight )) return 0;
 623     FillRgn( hdc, tmp, hbrush );
 624     DeleteObject( tmp );
 625     return 1;
 626 }
 627
 628 /***********************************************************************
 629  *           InvertRgn    (GDI.42)
 630  */
 631 BOOL InvertRgn( HDC hdc, HRGN hrgn )
 632 {
 633     HBRUSH prevBrush = SelectObject( hdc, GetStockObject(BLACK_BRUSH) );
 634     WORD prevROP = SetROP2( hdc, R2_NOT );
 635     BOOL retval = PaintRgn( hdc, hrgn );
 636     SelectObject( hdc, prevBrush );
 637     SetROP2( hdc, prevROP );
 638     return retval;
 639 }
 640
 641
 642 /***********************************************************************
 643  *           DrawFocusRect    (USER.466)
 644  */
 645 void DrawFocusRect( HDC hdc, LPRECT rc )
 646 {
 647     HPEN hOldPen;
 648     int oldDrawMode, oldBkMode;
 649     int left, top, right, bottom;
 650     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 651     if (!dc) return;
 652
 653     left   = XLPTODP( dc, rc->left );
 654     top    = YLPTODP( dc, rc->top );
 655     right  = XLPTODP( dc, rc->right );
 656     bottom = YLPTODP( dc, rc->bottom );
 657
 658     hOldPen = (HPEN)SelectObject(hdc, sysColorObjects.hpenWindowText );
 659     oldDrawMode = SetROP2(hdc, R2_XORPEN);
 660     oldBkMode = SetBkMode(hdc, TRANSPARENT);
 661
 662     if (DC_SetupGCForPen( dc ))
 663         XDrawRectangle( display, dc->u.x.drawable, dc->u.x.gc,
 664                         dc->w.DCOrgX + left, dc->w.DCOrgY + top,
 665                         right-left-1, bottom-top-1 );
 666
 667     SetBkMode(hdc, oldBkMode);
 668     SetROP2(hdc, oldDrawMode);
 669     SelectObject(hdc, (HANDLE)hOldPen);
 670 }
 671
 672
 673 /**********************************************************************
 674  *          GRAPH_DrawBitmap
 675  *
 676  * Short-cut function to blit a bitmap into a device.
 677  * Faster than CreateCompatibleDC() + SelectBitmap() + BitBlt() + DeleteDC().
 678  */
 679 BOOL GRAPH_DrawBitmap( HDC hdc, HBITMAP hbitmap, int xdest, int ydest,
 680                        int xsrc, int ysrc, int width, int height )
 681 {
 682     BITMAPOBJ *bmp;
 683     DC *dc;
 684
 685     if (!(dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC ))) return FALSE;
 686     if (!(bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC )))
 687         return FALSE;
 688     XSetFunction( display, dc->u.x.gc, GXcopy );
 689     if (bmp->bitmap.bmBitsPixel == 1)
 690     {
 691         XSetForeground( display, dc->u.x.gc, dc->w.backgroundPixel );
 692         XSetBackground( display, dc->u.x.gc, dc->w.textPixel );
 693         XCopyPlane( display, bmp->pixmap, dc->u.x.drawable, dc->u.x.gc,
 694                     xsrc, ysrc, width, height,
 695                     dc->w.DCOrgX + xdest, dc->w.DCOrgY + ydest, 1 );
 696         return TRUE;
 697     }
 698     else if (bmp->bitmap.bmBitsPixel == dc->w.bitsPerPixel)
 699     {
 700         XCopyArea( display, bmp->pixmap, dc->u.x.drawable, dc->u.x.gc,
 701                    xsrc, ysrc, width, height,
 702                    dc->w.DCOrgX + xdest, dc->w.DCOrgY + ydest );
 703         return TRUE;
 704     }
 705     else return FALSE;
 706 }
 707
 708
 709 /**********************************************************************
 710  *          GRAPH_DrawReliefRect  (Not a MSWin Call)
 711  */
 712 void GRAPH_DrawReliefRect( HDC hdc, RECT *rect, int highlight_size,
 713                            int shadow_size, BOOL pressed )
 714 {
 715     HBRUSH hbrushOld;
 716     int i;
 717
 718     hbrushOld = SelectObject( hdc, pressed ? sysColorObjects.hbrushBtnShadow :
 719                                           sysColorObjects.hbrushBtnHighlight );
 720     for (i = 0; i < highlight_size; i++)
 721     {
 722         PatBlt( hdc, rect->left + i, rect->top,
 723                 1, rect->bottom - rect->top - i, PATCOPY );
 724         PatBlt( hdc, rect->left, rect->top + i,
 725                 rect->right - rect->left - i, 1, PATCOPY );
 726     }
 727
 728     SelectObject( hdc, pressed ? sysColorObjects.hbrushBtnHighlight :
 729                                  sysColorObjects.hbrushBtnShadow );
 730     for (i = 0; i < shadow_size; i++)
 731     {
 732         PatBlt( hdc, rect->right - i - 1, rect->top + i,
 733                 1, rect->bottom - rect->top - i, PATCOPY );
 734         PatBlt( hdc, rect->left + i, rect->bottom - i - 1,
 735                 rect->right - rect->left - i, 1, PATCOPY );
 736     }
 737
 738     SelectObject( hdc, hbrushOld );
 739 }
 740
 741
 742 /**********************************************************************
 743  *          Polyline  (GDI.37)
 744  */
 745 BOOL Polyline (HDC hdc, LPPOINT pt, int count)
 746 {
 747     register int i;
 748     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 749     if (!dc)
 750     {
 751         dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
 752         if (!dc) return FALSE;
 753         MF_MetaPoly(dc, META_POLYLINE, pt, count);
 754         return TRUE;
 755     }
 756
 757     if (DC_SetupGCForPen( dc ))
 758         for (i = 0; i < count-1; i ++)
 759             XDrawLine (display, dc->u.x.drawable, dc->u.x.gc,
 760                        dc->w.DCOrgX + XLPTODP(dc, pt [i].x),
 761                        dc->w.DCOrgY + YLPTODP(dc, pt [i].y),
 762                        dc->w.DCOrgX + XLPTODP(dc, pt [i+1].x),
 763                        dc->w.DCOrgY + YLPTODP(dc, pt [i+1].y));
 764     return TRUE;
 765 }
 766
 767
 768 /**********************************************************************
 769  *          Polygon  (GDI.36)
 770  */
 771 BOOL Polygon (HDC hdc, LPPOINT pt, int count)
 772 {
 773     register int i;
 774     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 775     XPoint *points = (XPoint *) xmalloc (sizeof (XPoint) * (count+1));
 776
 777     if (!dc)
 778     {
 779         dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
 780         if (!dc) return FALSE;
 781         MF_MetaPoly(dc, META_POLYGON, pt, count);
 782         return TRUE;
 783     }
 784
 785     for (i = 0; i < count; i++)
 786     {
 787         points[i].x = dc->w.DCOrgX + XLPTODP( dc, pt[i].x );
 788         points[i].y = dc->w.DCOrgY + YLPTODP( dc, pt[i].y );
 789     }
 790     points[count] = points[0];
 791
 792     if (DC_SetupGCForBrush( dc ))
 793         XFillPolygon( display, dc->u.x.drawable, dc->u.x.gc,
 794                      points, count+1, Complex, CoordModeOrigin);
 795
 796     if (DC_SetupGCForPen ( dc ))
 797         XDrawLines( display, dc->u.x.drawable, dc->u.x.gc,
 798                    points, count+1, CoordModeOrigin );
 799
 800     free( points );
 801     return TRUE;
 802 }
 803
 804
 805 /**********************************************************************
 806  *          PolyPolygon  (GDI.450)
 807  */
 808 BOOL PolyPolygon( HDC hdc, LPPOINT pt, LPINT counts, WORD polygons )
 809 {
 810     HRGN hrgn;
 811     DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 812
 813     if (!dc)
 814     {
 815         dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
 816         if (!dc) return FALSE;
 817         /* MF_MetaPoly(dc, META_POLYGON, pt, count); */
 818         return TRUE;
 819     }
 820       /* FIXME: The points should be converted to device coords before */
 821       /* creating the region. But as CreatePolyPolygonRgn is not */
 822       /* really correct either, it doesn't matter much... */
 823       /* At least the outline will be correct :-) */
 824     hrgn = CreatePolyPolygonRgn( pt, counts, polygons, dc->w.polyFillMode );
 825     PaintRgn( hdc, hrgn );
 826     DeleteObject( hrgn );
 827
 828       /* Draw the outline of the polygons */
 829
 830     if (DC_SetupGCForPen ( dc ))
 831     {
 832         int i, j, max = 0;
 833         XPoint *points;
 834
 835         for (i = 0; i < polygons; i++) if (counts[i] > max) max = counts[i];
 836         points = (XPoint *) xmalloc( sizeof(XPoint) * (max+1) );
 837
 838         for (i = 0; i < polygons; i++)
 839         {
 840             for (j = 0; j < counts[i]; j++)
 841             {
 842                 points[j].x = dc->w.DCOrgX + XLPTODP( dc, pt->x );
 843                 points[j].y = dc->w.DCOrgY + YLPTODP( dc, pt->y );
 844                 pt++;
 845             }
 846             points[j] = points[0];
 847             XDrawLines( display, dc->u.x.drawable, dc->u.x.gc,
 848                         points, j + 1, CoordModeOrigin );
 849         }
 850         free( points );
 851     }
 852     return TRUE;
 853 }
 854
 855
 856 /**********************************************************************
 857  *          GRAPH_InternalFloodFill
 858  *
 859  * Internal helper function for flood fill.
 860  * (xorg,yorg) is the origin of the X image relative to the drawable.
 861  * (x,y) is relative to the origin of the X image.
 862  */
 863 static void GRAPH_InternalFloodFill( XImage *image, DC *dc,
 864                                      int x, int y,
 865                                      int xOrg, int yOrg,
 866                                      Pixel pixel, WORD fillType )
 867 {
 868     int left, right;
 869
 870 #define TO_FLOOD(x,y)  ((fillType == FLOODFILLBORDER) ? \
 871                         (XGetPixel(image,x,y) != pixel) : \
 872                         (XGetPixel(image,x,y) == pixel))
 873
 874     if (!TO_FLOOD(x,y)) return;
 875
 876       /* Find left and right boundaries */
 877
 878     left = right = x;
 879     while ((left > 0) && TO_FLOOD( left-1, y )) left--;
 880     while ((right < image->width) && TO_FLOOD( right, y )) right++;
 881     XFillRectangle( display, dc->u.x.drawable, dc->u.x.gc,
 882                     xOrg + left, yOrg + y, right-left, 1 );
 883
 884       /* Set the pixels of this line so we don't fill it again */
 885
 886     for (x = left; x < right; x++)
 887     {
 888         if (fillType == FLOODFILLBORDER) XPutPixel( image, x, y, pixel );
 889         else XPutPixel( image, x, y, ~pixel );
 890     }
 891
 892       /* Fill the line above */
 893
 894     if (--y >= 0)
 895     {
 896         x = left;
 897         while (x < right)
 898         {
 899             while ((x < right) && !TO_FLOOD(x,y)) x++;
 900             if (x >= right) break;
 901             while ((x < right) && TO_FLOOD(x,y)) x++;
 902             GRAPH_InternalFloodFill( image, dc, x-1, y,
 903                                      xOrg, yOrg, pixel, fillType );
 904         }
 905     }
 906
 907       /* Fill the line below */
 908
 909     if ((y += 2) < image->height)
 910     {
 911         x = left;
 912         while (x < right)
 913         {
 914             while ((x < right) && !TO_FLOOD(x,y)) x++;
 915             if (x >= right) break;
 916             while ((x < right) && TO_FLOOD(x,y)) x++;
 917             GRAPH_InternalFloodFill( image, dc, x-1, y,
 918                                      xOrg, yOrg, pixel, fillType );
 919         }
 920     }
 921 #undef TO_FLOOD
 922 }
 923
 924
 925 /**********************************************************************
 926  *          GRAPH_DoFloodFill
 927  *
 928  * Main flood-fill routine.
 929  */
 930 static BOOL GRAPH_DoFloodFill( DC *dc, RECT *rect, INT x, INT y,
 931                                COLORREF color, WORD fillType )
 932 {
 933     XImage *image;
 934
 935     if (!(image = XGetImage( display, dc->u.x.drawable,
 936                              dc->w.DCOrgX + rect->left,
 937                              dc->w.DCOrgY + rect->top,
 938                              rect->right - rect->left,
 939                              rect->bottom - rect->top,
 940                              AllPlanes, ZPixmap ))) return FALSE;
 941
 942     if (DC_SetupGCForBrush( dc ))
 943     {
 944           /* ROP mode is always GXcopy for flood-fill */
 945         XSetFunction( display, dc->u.x.gc, GXcopy );
 946         GRAPH_InternalFloodFill( image, dc,
 947                                  XLPTODP(dc,x) - rect->left,
 948                                  YLPTODP(dc,y) - rect->top,
 949                                  dc->w.DCOrgX + rect->left,
 950                                  dc->w.DCOrgY + rect->top,
 951                                  COLOR_ToPhysical( dc, color ), fillType );
 952     }
 953
 954     XDestroyImage( image );
 955     return TRUE;
 956 }
 957
 958
 959 /**********************************************************************
 960  *          ExtFloodFill  (GDI.372)
 961  */
 962 BOOL ExtFloodFill( HDC hdc, INT x, INT y, COLORREF color, WORD fillType )
 963 {
 964     RECT rect;
 965     DC *dc;
 966
 967     dprintf_graphics( stddeb, "ExtFloodFill "NPFMT" %d,%d %06lx %d\n",
 968                       hdc, x, y, color, fillType );
 969     dc = (DC *) GDI_GetObjPtr(hdc, DC_MAGIC);
 970     if (!dc)
 971     {
 972         dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
 973         if (!dc) return FALSE;
 974         MF_MetaParam4(dc, META_FLOODFILL, x, y, HIWORD(color),
 975                       LOWORD(color));
 976         return TRUE;
 977     }
 978
 979     if (!PtVisible( hdc, x, y )) return FALSE;
 980     if (GetRgnBox( dc->w.hGCClipRgn, &rect ) == ERROR) return FALSE;
 981
 982     return CallTo32_LargeStack( (int(*)())GRAPH_DoFloodFill, 6,
 983                                 dc, &rect, x, y, color, fillType );
 984 }
 985
 986
 987 /**********************************************************************
 988  *          FloodFill  (GDI.25)
 989  */
 990 BOOL FloodFill( HDC hdc, INT x, INT y, COLORREF color )
 991 {
 992     return ExtFloodFill( hdc, x, y, color, FLOODFILLBORDER );
 993 }