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/*
* Id: fbfillrect.c,v 1.1 1999/11/02 03:54:45 keithp Exp $
*
* Copyright © 1998 Keith Packard
*
* 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, and that the name of Keith Packard not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Keith Packard makes no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
/* $XFree86: xc/programs/Xserver/fb/fbfillrect.c,v 1.1 1999/11/19 13:53:43 hohndel Exp $ */
#include "fb.h"
void
fbPolyFillRect(DrawablePtr pDrawable,
GCPtr pGC,
int nrect,
xRectangle *prect)
{
RegionPtr pClip = fbGetCompositeClip(pGC);
register BoxPtr pbox;
BoxPtr pextent;
int extentX1, extentX2, extentY1, extentY2;
int fullX1, fullX2, fullY1, fullY2;
int partX1, partX2, partY1, partY2;
int xorg, yorg;
int n;
xorg = pDrawable->x;
yorg = pDrawable->y;
pextent = REGION_EXTENTS(pGC->pScreen, pClip);
extentX1 = pextent->x1;
extentY1 = pextent->y1;
extentX2 = pextent->x2;
extentY2 = pextent->y2;
while (nrect--)
{
fullX1 = prect->x + xorg;
fullY1 = prect->y + yorg;
fullX2 = fullX1 + (int) prect->width;
fullY2 = fullY1 + (int) prect->height;
prect++;
if (fullX1 < extentX1)
fullX1 = extentX1;
if (fullY1 < extentY1)
fullY1 = extentY1;
if (fullX2 > extentX2)
fullX2 = extentX2;
if (fullY2 > extentY2)
fullY2 = extentY2;
if ((fullX1 >= fullX2) || (fullY1 >= fullY2))
continue;
n = REGION_NUM_RECTS (pClip);
if (n == 1)
{
fbFill (pDrawable,
pGC,
fullX1, fullY1, fullX2-fullX1, fullY2-fullY1);
}
else
{
pbox = REGION_RECTS(pClip);
/*
* clip the rectangle to each box in the clip region
* this is logically equivalent to calling Intersect()
*/
while(n--)
{
partX1 = pbox->x1;
if (partX1 < fullX1)
partX1 = fullX1;
partY1 = pbox->y1;
if (partY1 < fullY1)
partY1 = fullY1;
partX2 = pbox->x2;
if (partX2 > fullX2)
partX2 = fullX2;
partY2 = pbox->y2;
if (partY2 > fullY2)
partY2 = fullY2;
pbox++;
if (partX1 < partX2 && partY1 < partY2)
fbFill (pDrawable, pGC,
partX1, partY1,
partX2 - partX1, partY2 - partY1);
}
}
}
}
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