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- /************************************************************
- Copyright 1989 by The Massachusetts Institute of Technology
-
- Permission to use, copy, modify, and distribute this
- software and its documentation for any purpose and without
- fee is hereby granted, provided that the above copyright
- notice appear in all copies and that both that copyright
- notice and this permission notice appear in supporting
- documentation, and that the name of MIT not be used in
- advertising or publicity pertaining to distribution of the
- software without specific prior written permission.
- M.I.T. makes no representation about the suitability of
- this software for any purpose. It is provided "as is"
- without any express or implied warranty.
-
- ********************************************************/
-
- /* $XConsortium: mfbfillarc.c,v 5.7 90/10/06 13:58:08 rws Exp $ */
-
- #include "X.h"
- #include "Xprotostr.h"
- #include "miscstruct.h"
- #include "gcstruct.h"
- #include "pixmapstr.h"
- #include "scrnintstr.h"
- #include "mfb.h"
- #include "maskbits.h"
- #include "mifillarc.h"
-
- extern void miPolyFillArc();
-
- static void
- mfbFillEllipseSolid(pDraw, arc, rop)
- DrawablePtr pDraw;
- xArc *arc;
- register int rop;
- {
- int x, y, e;
- int yk, xk, ym, xm, dx, dy, xorg, yorg;
- register int slw;
- miFillArcRec info;
- int *addrlt, *addrlb;
- register int *addrl;
- register int n;
- int nlwidth;
- register int xpos;
- int startmask, endmask, nlmiddle;
-
- if (pDraw->type == DRAWABLE_WINDOW)
- {
- addrlt = (int *)
- (((PixmapPtr)(pDraw->pScreen->devPrivate))->devPrivate.ptr);
- nlwidth = (int)
- (((PixmapPtr)(pDraw->pScreen->devPrivate))->devKind) >> 2;
- }
- else
- {
- addrlt = (int *)(((PixmapPtr)pDraw)->devPrivate.ptr);
- nlwidth = (int)(((PixmapPtr)pDraw)->devKind) >> 2;
- }
- miFillArcSetup(arc, &info);
- MIFILLARCSETUP();
- xorg += pDraw->x;
- yorg += pDraw->y;
- addrlb = addrlt;
- addrlt += nlwidth * (yorg - y);
- addrlb += nlwidth * (yorg + y + dy);
- while (y)
- {
- addrlt += nlwidth;
- addrlb -= nlwidth;
- MIFILLARCSTEP(slw);
- if (!slw)
- continue;
- xpos = xorg - x;
- addrl = addrlt + (xpos >> 5);
- if (((xpos & 0x1f) + slw) < 32)
- {
- maskpartialbits(xpos, slw, startmask);
- if (rop == RROP_BLACK)
- *addrl &= ~startmask;
- else if (rop == RROP_WHITE)
- *addrl |= startmask;
- else
- *addrl ^= startmask;
- if (miFillArcLower(slw))
- {
- addrl = addrlb + (xpos >> 5);
- if (rop == RROP_BLACK)
- *addrl &= ~startmask;
- else if (rop == RROP_WHITE)
- *addrl |= startmask;
- else
- *addrl ^= startmask;
- }
- continue;
- }
- maskbits(xpos, slw, startmask, endmask, nlmiddle);
- if (startmask)
- {
- if (rop == RROP_BLACK)
- *addrl++ &= ~startmask;
- else if (rop == RROP_WHITE)
- *addrl++ |= startmask;
- else
- *addrl++ ^= startmask;
- }
- n = nlmiddle;
- if (rop == RROP_BLACK)
- while (n--)
- *addrl++ = 0;
- else if (rop == RROP_WHITE)
- while (n--)
- *addrl++ = ~0;
- else
- while (n--)
- *addrl++ ^= ~0;
- if (endmask)
- {
- if (rop == RROP_BLACK)
- *addrl &= ~endmask;
- else if (rop == RROP_WHITE)
- *addrl |= endmask;
- else
- *addrl ^= endmask;
- }
- if (!miFillArcLower(slw))
- continue;
- addrl = addrlb + (xpos >> 5);
- if (startmask)
- {
- if (rop == RROP_BLACK)
- *addrl++ &= ~startmask;
- else if (rop == RROP_WHITE)
- *addrl++ |= startmask;
- else
- *addrl++ ^= startmask;
- }
- n = nlmiddle;
- if (rop == RROP_BLACK)
- while (n--)
- *addrl++ = 0;
- else if (rop == RROP_WHITE)
- while (n--)
- *addrl++ = ~0;
- else
- while (n--)
- *addrl++ ^= ~0;
- if (endmask)
- {
- if (rop == RROP_BLACK)
- *addrl &= ~endmask;
- else if (rop == RROP_WHITE)
- *addrl |= endmask;
- else
- *addrl ^= endmask;
- }
- }
- }
-
- #define FILLSPAN(xl,xr,addr) \
- if (xr >= xl) \
- { \
- width = xr - xl + 1; \
- addrl = addr + (xl >> 5); \
- if (((xl & 0x1f) + width) < 32) \
- { \
- maskpartialbits(xl, width, startmask); \
- if (rop == RROP_BLACK) \
- *addrl &= ~startmask; \
- else if (rop == RROP_WHITE) \
- *addrl |= startmask; \
- else \
- *addrl ^= startmask; \
- } \
- else \
- { \
- maskbits(xl, width, startmask, endmask, nlmiddle); \
- if (startmask) \
- { \
- if (rop == RROP_BLACK) \
- *addrl++ &= ~startmask; \
- else if (rop == RROP_WHITE) \
- *addrl++ |= startmask; \
- else \
- *addrl++ ^= startmask; \
- } \
- n = nlmiddle; \
- if (rop == RROP_BLACK) \
- while (n--) \
- *addrl++ = 0; \
- else if (rop == RROP_WHITE) \
- while (n--) \
- *addrl++ = ~0; \
- else \
- while (n--) \
- *addrl++ ^= ~0; \
- if (endmask) \
- { \
- if (rop == RROP_BLACK) \
- *addrl &= ~endmask; \
- else if (rop == RROP_WHITE) \
- *addrl |= endmask; \
- else \
- *addrl ^= endmask; \
- } \
- } \
- }
-
- #define FILLSLICESPANS(flip,addr) \
- if (!flip) \
- { \
- FILLSPAN(xl, xr, addr); \
- } \
- else \
- { \
- xc = xorg - x; \
- FILLSPAN(xc, xr, addr); \
- xc += slw - 1; \
- FILLSPAN(xl, xc, addr); \
- }
-
- static void
- mfbFillArcSliceSolidCopy(pDraw, pGC, arc, rop)
- DrawablePtr pDraw;
- GCPtr pGC;
- xArc *arc;
- register int rop;
- {
- register int *addrl;
- register int n;
- int yk, xk, ym, xm, dx, dy, xorg, yorg, slw;
- register int x, y, e;
- miFillArcRec info;
- miArcSliceRec slice;
- int xl, xr, xc;
- int *addrlt, *addrlb;
- int nlwidth;
- int width;
- int startmask, endmask, nlmiddle;
-
- if (pDraw->type == DRAWABLE_WINDOW)
- {
- addrlt = (int *)
- (((PixmapPtr)(pDraw->pScreen->devPrivate))->devPrivate.ptr);
- nlwidth = (int)
- (((PixmapPtr)(pDraw->pScreen->devPrivate))->devKind) >> 2;
- }
- else
- {
- addrlt = (int *)(((PixmapPtr)pDraw)->devPrivate.ptr);
- nlwidth = (int)(((PixmapPtr)pDraw)->devKind) >> 2;
- }
- miFillArcSetup(arc, &info);
- miFillArcSliceSetup(arc, &slice, pGC);
- MIFILLARCSETUP();
- xorg += pDraw->x;
- yorg += pDraw->y;
- addrlb = addrlt;
- addrlt += nlwidth * (yorg - y);
- addrlb += nlwidth * (yorg + y + dy);
- slice.edge1.x += pDraw->x;
- slice.edge2.x += pDraw->x;
- while (y > 0)
- {
- addrlt += nlwidth;
- addrlb -= nlwidth;
- MIFILLARCSTEP(slw);
- MIARCSLICESTEP(slice.edge1);
- MIARCSLICESTEP(slice.edge2);
- if (miFillSliceUpper(slice))
- {
- MIARCSLICEUPPER(xl, xr, slice, slw);
- FILLSLICESPANS(slice.flip_top, addrlt);
- }
- if (miFillSliceLower(slice))
- {
- MIARCSLICELOWER(xl, xr, slice, slw);
- FILLSLICESPANS(slice.flip_bot, addrlb);
- }
- }
- }
-
- void
- mfbPolyFillArcSolid(pDraw, pGC, narcs, parcs)
- register DrawablePtr pDraw;
- GCPtr pGC;
- int narcs;
- xArc *parcs;
- {
- mfbPrivGC *priv;
- register xArc *arc;
- register int i;
- BoxRec box;
- RegionPtr cclip;
- int rop;
-
- priv = (mfbPrivGC *) pGC->devPrivates[mfbGCPrivateIndex].ptr;
- rop = priv->rop;
- if ((rop == RROP_NOP) || !(pGC->planemask & 1))
- return;
- cclip = priv->pCompositeClip;
- for (arc = parcs, i = narcs; --i >= 0; arc++)
- {
- if (miFillArcEmpty(arc))
- continue;
- if (miCanFillArc(arc))
- {
- box.x1 = arc->x + pDraw->x;
- box.y1 = arc->y + pDraw->y;
- box.x2 = box.x1 + (int)arc->width + 1;
- box.y2 = box.y1 + (int)arc->height + 1;
- if ((*pDraw->pScreen->RectIn)(cclip, &box) == rgnIN)
- {
- if ((arc->angle2 >= FULLCIRCLE) ||
- (arc->angle2 <= -FULLCIRCLE))
- mfbFillEllipseSolid(pDraw, arc, rop);
- else
- mfbFillArcSliceSolidCopy(pDraw, pGC, arc, rop);
- continue;
- }
- }
- miPolyFillArc(pDraw, pGC, 1, arc);
- }
- }
-