4.3BSD/usr/contrib/X/libsun/fill.c

#ifndef lint
static char *rcsid_fill_c = "$Header: fill.c,v 10.2 86/02/01 16:20:53 tony Rel $";
#endif	lint
#ifdef	sun
/*
 * The Sun X drivers are a product of Sun Microsystems, Inc. and are provided
 * for unrestricted use provided that this legend is included on all tape
 * media and as a part of the software program in whole or part.  Users
 * may copy or modify these drivers without charge, but are not authorized
 * to license or distribute them to anyone else except as part of a product or
 * program developed by the user.
 * 
 * THE SUN X DRIVERS ARE PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND
 * INCLUDING THE WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE
 * PRACTICE.
 *
 * The Sun X Drivers are provided with no support and without any obligation
 * on the part of Sun Microsystems, Inc. to assist in their use, correction,
 * modification or enhancement.
 * 
 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY THE SUN X
 * DRIVERS OR ANY PART THEREOF.
 * 
 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
 * or profits or other special, indirect and consequential damages, even if
 * Sun has been advised of the possibility of such damages.
 * 
 * Sun Microsystems, Inc.
 * 2550 Garcia Avenue
 * Mountain View, California  94043
 */

#ifndef	lint
static char sccsid[] = "@(#)fill.c 2.1 86/01/28 Copyright 1986 Sun Micro";
#endif

/*-
 * Copyright (c) 1986 by Sun Microsystems,  Inc.
 */

/* fill.c	Perform a simple raster operation a section of the screen
 *
 *	PixFill	Do a function on the screen
 *
 */

#include "Xsun.h"
extern struct pixrect *PixRect;

/*ARGSUSED*/
PixFill (srcpix, xymask, dstx, dsty, width, height, clips, clipcount,
	 func, zmask)
	int srcpix, dstx, dsty, width, height, clipcount, zmask;
	register BITMAP *xymask;
	register int func;
	CLIP *clips;
{
    int         op = SUN_FROM_X_OP(func) | PIX_COLOR(srcpix) | PIX_DONTCLIP;
    int allmask = -1;

    SetZmask(PixRect, &zmask);
    if (xymask == NULL) {
	do {
	    int         cleft, ctop, cwidth, cheight;

	    GetNextClip(clips, cleft, ctop, cwidth, cheight);
	    if (OverLap(cleft, ctop, cwidth, cheight, dstx, dsty, width, height)) {
		int         tleft = (cleft > dstx ? cleft : dstx);
		int         ttop = (ctop > dsty ? ctop : dsty);
		int         twidth = (cleft + cwidth < dstx + width ? cleft + cwidth : dstx + width) - tleft;
		int         theight = (ctop + cheight < dsty + height ? ctop + cheight : dsty + height) - ttop;

		CheckCursor(tleft, ttop, twidth, theight);
		pr_rop(PixRect, tleft, ttop, twidth, theight, op, NULL, 0, 0);
	    }
	} while (--clipcount > 0);
    }
    else {
	struct pixrect stencil;

	stencil.pr_ops = PixRect->pr_ops;
	stencil.pr_size.x = xymask->width;
	stencil.pr_size.y = xymask->height;
	stencil.pr_depth = 1;
	stencil.pr_data = xymask->data;
	do {
	    int         cleft, ctop, cwidth, cheight;

	    GetNextClip(clips, cleft, ctop, cwidth, cheight);
	    if (OverLap(cleft, ctop, cwidth, cheight, dstx, dsty, width, height)) {
		int         tleft = (cleft > dstx ? cleft : dstx);
		int         ttop = (ctop > dsty ? ctop : dsty);
		int         twidth = (cleft + cwidth < dstx + width ? cleft + cwidth : dstx + width) - tleft;
		int         theight = (ctop + cheight < dsty + height ? ctop + cheight : dsty + height) - ttop;

		CheckCursor(tleft, ttop, twidth, theight);
		pr_stencil(PixRect, tleft, ttop, twidth, theight, op, &stencil, tleft, ttop, NULL, 0, 0);
	    }
	} while (--clipcount > 0);
    }
    RestoreCursor();
    SetZmask(PixRect, &allmask);
}
#endif	sun