268 lines
7.2 KiB
C
268 lines
7.2 KiB
C
/* $XFree86$ */
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/************************************************************
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Copyright (c) 1989 X Consortium
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of the X Consortium shall not be
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used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from the X Consortium.
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********************************************************/
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/* $XConsortium: iplfillarc.c,v 5.15 94/04/17 20:28:47 dpw Exp $ */
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/* Modified nov 94 by Martin Schaller (Martin_Schaller@maus.r.de) for use with
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interleaved planes */
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#include "X.h"
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#include "Xprotostr.h"
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#include "miscstruct.h"
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#include "gcstruct.h"
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#include "pixmapstr.h"
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#include "scrnintstr.h"
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#include "ipl.h"
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#include "mifillarc.h"
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#include "iplrrop.h"
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#include "mi.h"
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#include "iplmskbits.h"
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static void
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INTER_RROP_NAME(iplFillEllipseSolid) (pDraw, pGC, arc)
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DrawablePtr pDraw;
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GCPtr pGC;
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xArc *arc;
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{
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int x, y, e;
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int yk, xk, ym, xm, dx, dy, xorg, yorg;
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miFillArcRec info;
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INTER_DECLAREG(*addrgt);
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INTER_DECLAREG(*addrgb);
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INTER_DECLAREG(*addrg);
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register int n;
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int ngwidth;
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INTER_RROP_DECLARE
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register int xpos;
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register int slw;
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INTER_DECLAREG(startmask);
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INTER_DECLAREG(endmask);
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int nlmiddle;
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iplGetGroupWidthAndPointer (pDraw, ngwidth, addrgt);
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INTER_RROP_FETCH_GC(pGC);
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miFillArcSetup(arc, &info);
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MIFILLARCSETUP();
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xorg += pDraw->x;
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yorg += pDraw->y;
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addrgb = addrgt;
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addrgt += ngwidth * (yorg - y);
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addrgb += ngwidth * (yorg + y + dy);
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while (y)
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{
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addrgt += ngwidth;
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addrgb -= ngwidth;
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MIFILLARCSTEP(slw);
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if (!slw)
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continue;
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xpos = xorg - x;
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addrg = addrgt + (xpos >> INTER_PGSH) * INTER_PLANES;
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if (((xpos & INTER_PIM) + slw) <= INTER_PPG)
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{
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INTER_maskpartialbits(xpos, slw, startmask);
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INTER_RROP_SOLID_MASK(addrg,startmask);
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if (miFillArcLower(slw))
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{
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addrg = addrgb + (xpos >> INTER_PGSH) * INTER_PLANES;
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INTER_RROP_SOLID_MASK(addrg, startmask);
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}
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continue;
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}
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INTER_maskbits(xpos, slw, startmask, endmask, nlmiddle);
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if (startmask)
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{
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INTER_RROP_SOLID_MASK(addrg, startmask);
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INTER_NEXT_GROUP(addrg);
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}
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n = nlmiddle;
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INTER_RROP_SPAN(addrg,n)
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if (endmask)
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INTER_RROP_SOLID_MASK(addrg, endmask);
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if (!miFillArcLower(slw))
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continue;
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addrg = addrgb + (xpos >> INTER_PGSH) * INTER_PLANES;
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if (startmask)
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{
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INTER_RROP_SOLID_MASK(addrg, startmask);
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INTER_NEXT_GROUP(addrg);
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}
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n = nlmiddle;
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INTER_RROP_SPAN(addrg, n);
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if (endmask)
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INTER_RROP_SOLID_MASK(addrg, endmask);
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}
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}
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#define FILLSPAN(xl,xr,addr) \
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if (xr >= xl) \
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{ \
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n = xr - xl + 1; \
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addrg = addr + (xl >> INTER_PGSH) * INTER_PLANES; \
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if (((xl & INTER_PIM) + n) <= INTER_PPG) \
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{ \
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INTER_maskpartialbits(xl, n, startmask); \
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INTER_RROP_SOLID_MASK(addrg, startmask); \
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} \
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else \
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{ \
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INTER_maskbits(xl, n, startmask, endmask, n); \
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if (startmask) \
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{ \
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INTER_RROP_SOLID_MASK(addrg, startmask); \
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INTER_NEXT_GROUP(addrg); \
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} \
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while (n--) \
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{ \
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INTER_RROP_SOLID(addrg); \
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INTER_NEXT_GROUP(addrg); \
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} \
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if (endmask) \
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INTER_RROP_SOLID_MASK(addrg, endmask); \
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} \
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}
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#define FILLSLICESPANS(flip,addr) \
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if (!flip) \
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{ \
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FILLSPAN(xl, xr, addr); \
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} \
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else \
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{ \
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xc = xorg - x; \
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FILLSPAN(xc, xr, addr); \
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xc += slw - 1; \
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FILLSPAN(xl, xc, addr); \
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}
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static void
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INTER_RROP_NAME(iplFillArcSliceSolid)(pDraw, pGC, arc)
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DrawablePtr pDraw;
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GCPtr pGC;
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xArc *arc;
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{
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int yk, xk, ym, xm, dx, dy, xorg, yorg, slw;
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register int x, y, e;
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miFillArcRec info;
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miArcSliceRec slice;
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int xl, xr, xc;
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INTER_DECLAREG(*addrgt);
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INTER_DECLAREG(*addrgb);
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INTER_DECLAREG(*addrg);
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register int n;
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int ngwidth;
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INTER_RROP_DECLARE
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INTER_DECLAREG(startmask);
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INTER_DECLAREG(endmask);
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iplGetGroupWidthAndPointer (pDraw, ngwidth, addrgt);
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INTER_RROP_FETCH_GC(pGC);
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miFillArcSetup(arc, &info);
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miFillArcSliceSetup(arc, &slice, pGC);
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MIFILLARCSETUP();
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xorg += pDraw->x;
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yorg += pDraw->y;
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addrgb = addrgt;
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addrgt += ngwidth * (yorg - y);
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addrgb += ngwidth * (yorg + y + dy);
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slice.edge1.x += pDraw->x;
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slice.edge2.x += pDraw->x;
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while (y > 0)
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{
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addrgt += ngwidth;
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addrgb -= ngwidth;
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MIFILLARCSTEP(slw);
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MIARCSLICESTEP(slice.edge1);
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MIARCSLICESTEP(slice.edge2);
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if (miFillSliceUpper(slice))
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{
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MIARCSLICEUPPER(xl, xr, slice, slw);
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FILLSLICESPANS(slice.flip_top, addrgt);
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}
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if (miFillSliceLower(slice))
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{
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MIARCSLICELOWER(xl, xr, slice, slw);
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FILLSLICESPANS(slice.flip_bot, addrgb);
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}
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}
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}
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void
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INTER_RROP_NAME(iplPolyFillArcSolid) (pDraw, pGC, narcs, parcs)
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DrawablePtr pDraw;
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GCPtr pGC;
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int narcs;
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xArc *parcs;
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{
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register xArc *arc;
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register int i;
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int x2, y2;
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BoxRec box;
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RegionPtr cclip;
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cclip = iplGetCompositeClip(pGC);
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for (arc = parcs, i = narcs; --i >= 0; arc++)
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{
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if (miFillArcEmpty(arc))
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continue;
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if (miCanFillArc(arc))
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{
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box.x1 = arc->x + pDraw->x;
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box.y1 = arc->y + pDraw->y;
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/*
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* Because box.x2 and box.y2 get truncated to 16 bits, and the
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* RECT_IN_REGION test treats the resulting number as a signed
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* integer, the RECT_IN_REGION test alone can go the wrong way.
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* This can result in a server crash because the rendering
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* routines in this file deal directly with cpu addresses
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* of pixels to be stored, and do not clip or otherwise check
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* that all such addresses are within their respective pixmaps.
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* So we only allow the RECT_IN_REGION test to be used for
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* values that can be expressed correctly in a signed short.
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*/
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x2 = box.x1 + (int)arc->width + 1;
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box.x2 = x2;
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y2 = box.y1 + (int)arc->height + 1;
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box.y2 = y2;
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if ( (x2 <= MAXSHORT) && (y2 <= MAXSHORT) &&
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(RECT_IN_REGION(pDraw->pScreen, cclip, &box) == rgnIN) )
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{
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if ((arc->angle2 >= FULLCIRCLE) ||
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(arc->angle2 <= -FULLCIRCLE))
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INTER_RROP_NAME(iplFillEllipseSolid)(pDraw, pGC, arc);
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else
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INTER_RROP_NAME(iplFillArcSliceSolid)(pDraw, pGC, arc);
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continue;
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}
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}
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miPolyFillArc(pDraw, pGC, 1, arc);
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}
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}
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