266 lines
6.7 KiB
C
266 lines
6.7 KiB
C
/************************************************************
|
|
|
|
Copyright 1989, 1998 The Open Group
|
|
|
|
Permission to use, copy, modify, distribute, and sell this software and its
|
|
documentation for any purpose is hereby granted without fee, provided that
|
|
the above copyright notice appear in all copies and that both that
|
|
copyright notice and this permission notice appear in supporting
|
|
documentation.
|
|
|
|
The above copyright notice and this permission notice shall be included in
|
|
all copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
|
|
AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
|
|
Except as contained in this notice, the name of The Open Group shall not be
|
|
used in advertising or otherwise to promote the sale, use or other dealings
|
|
in this Software without prior written authorization from The Open Group.
|
|
|
|
********************************************************/
|
|
|
|
/* $Xorg: cfbfillarc.c,v 1.4 2001/02/09 02:04:37 xorgcvs Exp $ */
|
|
|
|
#include "X.h"
|
|
#include "Xprotostr.h"
|
|
#include "miscstruct.h"
|
|
#include "gcstruct.h"
|
|
#include "pixmapstr.h"
|
|
#include "scrnintstr.h"
|
|
#include "cfb.h"
|
|
#include "cfbmskbits.h"
|
|
#include "mifillarc.h"
|
|
#include "cfbrrop.h"
|
|
#include "mi.h"
|
|
|
|
/* gcc 1.35 is stupid */
|
|
#if defined(__GNUC__) && defined(mc68020)
|
|
#define STUPID volatile
|
|
#else
|
|
#define STUPID
|
|
#endif
|
|
|
|
static void
|
|
RROP_NAME(cfbFillEllipseSolid) (pDraw, pGC, arc)
|
|
DrawablePtr pDraw;
|
|
GCPtr pGC;
|
|
xArc *arc;
|
|
{
|
|
STUPID int x, y, e;
|
|
STUPID int yk, xk, ym, xm, dx, dy, xorg, yorg;
|
|
miFillArcRec info;
|
|
unsigned long *addrlt, *addrlb;
|
|
register unsigned long *addrl;
|
|
register int n;
|
|
int nlwidth;
|
|
RROP_DECLARE
|
|
register int xpos;
|
|
register int slw;
|
|
unsigned long startmask, endmask;
|
|
int nlmiddle;
|
|
|
|
cfbGetLongWidthAndPointer (pDraw, nlwidth, addrlt)
|
|
|
|
RROP_FETCH_GC(pGC);
|
|
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 >> PWSH);
|
|
if (((xpos & PIM) + slw) <= PPW)
|
|
{
|
|
maskpartialbits(xpos, slw, startmask);
|
|
RROP_SOLID_MASK(addrl,startmask);
|
|
if (miFillArcLower(slw))
|
|
{
|
|
addrl = addrlb + (xpos >> PWSH);
|
|
RROP_SOLID_MASK(addrl, startmask);
|
|
}
|
|
continue;
|
|
}
|
|
maskbits(xpos, slw, startmask, endmask, nlmiddle);
|
|
if (startmask)
|
|
{
|
|
RROP_SOLID_MASK(addrl, startmask);
|
|
addrl++;
|
|
}
|
|
n = nlmiddle;
|
|
RROP_SPAN(addrl,n)
|
|
|
|
if (endmask)
|
|
RROP_SOLID_MASK(addrl, endmask);
|
|
if (!miFillArcLower(slw))
|
|
continue;
|
|
addrl = addrlb + (xpos >> PWSH);
|
|
if (startmask)
|
|
{
|
|
RROP_SOLID_MASK(addrl, startmask);
|
|
addrl++;
|
|
}
|
|
n = nlmiddle;
|
|
RROP_SPAN(addrl, n);
|
|
if (endmask)
|
|
RROP_SOLID_MASK(addrl, endmask);
|
|
}
|
|
}
|
|
|
|
#define FILLSPAN(xl,xr,addr) \
|
|
if (xr >= xl) \
|
|
{ \
|
|
n = xr - xl + 1; \
|
|
addrl = addr + (xl >> PWSH); \
|
|
if (((xl & PIM) + n) <= PPW) \
|
|
{ \
|
|
maskpartialbits(xl, n, startmask); \
|
|
RROP_SOLID_MASK(addrl, startmask); \
|
|
} \
|
|
else \
|
|
{ \
|
|
maskbits(xl, n, startmask, endmask, n); \
|
|
if (startmask) \
|
|
{ \
|
|
RROP_SOLID_MASK(addrl, startmask); \
|
|
addrl++; \
|
|
} \
|
|
while (n--) \
|
|
{ \
|
|
RROP_SOLID(addrl); \
|
|
++addrl; \
|
|
} \
|
|
if (endmask) \
|
|
RROP_SOLID_MASK(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
|
|
RROP_NAME(cfbFillArcSliceSolid)(pDraw, pGC, arc)
|
|
DrawablePtr pDraw;
|
|
GCPtr pGC;
|
|
xArc *arc;
|
|
{
|
|
int yk, xk, ym, xm, dx, dy, xorg, yorg, slw;
|
|
register int x, y, e;
|
|
miFillArcRec info;
|
|
miArcSliceRec slice;
|
|
int xl, xr, xc;
|
|
unsigned long *addrlt, *addrlb;
|
|
register unsigned long *addrl;
|
|
register int n;
|
|
int nlwidth;
|
|
RROP_DECLARE
|
|
unsigned long startmask, endmask;
|
|
|
|
cfbGetLongWidthAndPointer (pDraw, nlwidth, addrlt)
|
|
|
|
RROP_FETCH_GC(pGC);
|
|
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
|
|
RROP_NAME(cfbPolyFillArcSolid) (pDraw, pGC, narcs, parcs)
|
|
DrawablePtr pDraw;
|
|
GCPtr pGC;
|
|
int narcs;
|
|
xArc *parcs;
|
|
{
|
|
register xArc *arc;
|
|
register int i;
|
|
int x2, y2;
|
|
BoxRec box;
|
|
RegionPtr cclip;
|
|
|
|
cclip = cfbGetCompositeClip(pGC);
|
|
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;
|
|
/*
|
|
* Because box.x2 and box.y2 get truncated to 16 bits, and the
|
|
* RECT_IN_REGION test treats the resulting number as a signed
|
|
* integer, the RECT_IN_REGION test alone can go the wrong way.
|
|
* This can result in a server crash because the rendering
|
|
* routines in this file deal directly with cpu addresses
|
|
* of pixels to be stored, and do not clip or otherwise check
|
|
* that all such addresses are within their respective pixmaps.
|
|
* So we only allow the RECT_IN_REGION test to be used for
|
|
* values that can be expressed correctly in a signed short.
|
|
*/
|
|
x2 = box.x1 + (int)arc->width + 1;
|
|
box.x2 = x2;
|
|
y2 = box.y1 + (int)arc->height + 1;
|
|
box.y2 = y2;
|
|
if ( (x2 <= MAXSHORT) && (y2 <= MAXSHORT) &&
|
|
(RECT_IN_REGION(pDraw->pScreen, cclip, &box) == rgnIN) )
|
|
{
|
|
if ((arc->angle2 >= FULLCIRCLE) ||
|
|
(arc->angle2 <= -FULLCIRCLE))
|
|
RROP_NAME(cfbFillEllipseSolid)(pDraw, pGC, arc);
|
|
else
|
|
RROP_NAME(cfbFillArcSliceSolid)(pDraw, pGC, arc);
|
|
continue;
|
|
}
|
|
}
|
|
miPolyFillArc(pDraw, pGC, 1, arc);
|
|
}
|
|
}
|