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patfbox.c
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1993-12-06
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/**
** PATFBOX.C
**
** Copyright (C) 1992, Csaba Biegl
** 820 Stirrup Dr, Nashville, TN, 37221
** csaba@vuse.vanderbilt.edu
**
** This file is distributed under the terms listed in the document
** "copying.cb", available from the author at the address above.
** A copy of "copying.cb" should accompany this file; if not, a copy
** should be available from where this file was obtained. This file
** may not be distributed without a verbatim copy of "copying.cb".
** You should also have received a copy of the GNU General Public
** License along with this program (it is in the file "copying");
** if not, write to the Free Software Foundation, Inc., 675 Mass Ave,
** Cambridge, MA 02139, USA.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**/
#include "grx.h"
#include "libgrx.h"
#include "clipping.h"
void GrPatternFilledBox(int x1,int y1,int x2,int y2,GrPattern *p)
{
int width,height;
MOUSE_FLAG;
CLIPBOX(CURC,x1,y1,x2,y2);
MOUSE_BLOCK(CURC,x1,y1,x2,y2);
width = x2 - x1 + 1;
height = y2 - y1 + 1;
if(!p->gp_ispixmap)
while(--height >= 0) _GrFillPattern(x1,y1++,width,p);
else {
int pwdt = p->gp_pxp_width;
int phgt = p->gp_pxp_height;
int xoff = (x1 + CURC->gc_xoffset) % pwdt;
int yoff = (y1 + CURC->gc_yoffset) % phgt;
while(height > 0) {
int fillh = MIN(height,(phgt - yoff));
int linewdt = width;
int xpos = x1;
int xcuroff = xoff;
while(linewdt > 0) {
int fillw = MIN(linewdt,(pwdt - xcuroff));
_GrPixCopy(CURC,PIX_ADDR(CURC,xpos,y1),
(GC *)(&p->gp_pxp_source),PIX_ADDR(&p->gp_pxp_source,xcuroff,yoff),
fillw,fillh,p->gp_pxp_oper
);
linewdt -= fillw;
xpos += fillw;
xcuroff = 0;
}
height -= fillh;
y1 += fillh;
yoff = 0;
}
}
MOUSE_UNBLOCK();
}