Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1

Summary: Imported nx-X11-3.1.0-1.tar.gz
Keywords:

Imported nx-X11-3.1.0-1.tar.gz
into Git repository

1 files changed, 216 insertions, 0 deletions

diff --git a/nx-X11/programs/Xserver/afb/afbbresd.c b/nx-X11/programs/Xserver/afb/afbbresd.c
new file mode 100644
index 000000000..52cb62cab
--- /dev/null
+++ b/nx-X11/programs/Xserver/afb/afbbresd.c
@@ -0,0 +1,216 @@
+/* $XFree86$ */
+/***********************************************************
+
+Copyright (c) 1987  X Consortium
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+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
+X CONSORTIUM 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 X Consortium 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 X Consortium.
+
+
+Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
+
+                        All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+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 Digital not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.
+
+DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+DIGITAL 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.
+
+******************************************************************/
+/* $XConsortium: afbbresd.c,v 1.10 94/04/17 20:28:18 dpw Exp $ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <X11/X.h>
+#include "misc.h"
+#include "afb.h"
+#include "maskbits.h"
+#include "miline.h"
+
+/* Dashed bresenham line */
+
+#define StepDash\
+	if (!--dashRemaining) { \
+		if (++ dashIndex == numInDashList) \
+			dashIndex = 0; \
+		dashRemaining = pDash[dashIndex]; \
+		rop = fgrop; \
+		if (dashIndex & 1) \
+			rop = bgrop; \
+	}
+
+void
+afbBresD(pdashIndex, pDash, numInDashList, pdashOffset, isDoubleDash,
+		 addrlbase, nlwidth, sizeDst, depthDst,
+		 signdx, signdy, axis, x1, y1, e, e1, e2, len, rrops, bgrrops)
+int *pdashIndex;		/* current dash */
+unsigned char *pDash;		/* dash list */
+int numInDashList;		/* total length of dash list */
+int *pdashOffset;		/* offset into current dash */
+int isDoubleDash;
+PixelType *addrlbase;		/* pointer to base of bitmap */
+int nlwidth;				/* width in longwords of bitmap */
+int sizeDst;
+int depthDst;
+int signdx, signdy;		/* signs of directions */
+int axis;				/* major axis (Y_AXIS or X_AXIS) */
+int x1, y1;				/* initial point */
+register int e;				/* error accumulator */
+register int e1;		/* bresenham increments */
+int e2;
+int len;				/* length of line */
+unsigned char *rrops;
+unsigned char *bgrrops;
+{
+	register int yinc;		/* increment to next scanline, in bytes */
+	register PixelType *addrl;
+	register int e3 = e2-e1;
+	register unsigned long bit;
+	PixelType leftbit = mfbGetmask(0); /* leftmost bit to process in new word */
+	PixelType rightbit = mfbGetmask(PPW-1); /* rightmost bit to process in new word */
+	int dashIndex;
+	int dashOffset;
+	int dashRemaining;
+	int		rop;
+	int fgrop;
+	int bgrop;
+	int saveE;
+	int saveLen;
+	int d;
+
+	dashOffset = *pdashOffset;
+	dashIndex = *pdashIndex;
+	dashRemaining = pDash[dashIndex] - dashOffset;
+	/* point to longword containing first point */
+
+	yinc = signdy * nlwidth;
+	e = e-e1;						/* to make looping easier */
+
+	saveE = e;
+	saveLen = len;
+
+	for (d = 0; d < depthDst; d++) {
+		addrl = afbScanline(addrlbase, x1, y1, nlwidth);
+		addrlbase += sizeDst;	/* @@@ NEXT PLANE @@@ */
+
+		fgrop = rrops[d];
+		bgrop = bgrrops[d];
+
+		e = saveE;
+		len = saveLen;
+		bit = mfbGetmask(x1 & PIM);
+
+		rop = fgrop;
+		if (!isDoubleDash)
+			bgrop = -1;
+		if (dashIndex & 1)
+			rop = bgrop;
+
+		if (axis == X_AXIS) {
+			if (signdx > 0) {
+				while(len--) {
+					if (rop == RROP_BLACK)
+						*addrl &= ~bit;
+					else if (rop == RROP_WHITE)
+						*addrl |= bit;
+					else if (rop == RROP_INVERT)
+						*addrl ^= bit;
+					e += e1;
+					if (e >= 0) {
+						afbScanlineInc(addrl, yinc);
+						e += e3;
+					}
+					bit = SCRRIGHT(bit,1);
+					if (!bit) { bit = leftbit;addrl ++; }
+					StepDash
+				}
+			} else {
+				while(len--) {
+					if (rop == RROP_BLACK)
+						*addrl &= ~bit;
+					else if (rop == RROP_WHITE)
+						*addrl |= bit;
+					else if (rop == RROP_INVERT)
+						*addrl ^= bit;
+					e += e1;
+					if (e >= 0) {
+						afbScanlineInc(addrl, yinc);
+						e += e3;
+					}
+					bit = SCRLEFT(bit,1);
+					if (!bit) { bit = rightbit;addrl --; }
+					StepDash
+				}
+			}
+		} /* if X_AXIS */ else {
+			if (signdx > 0) {
+				while(len--) {
+					if (rop == RROP_BLACK)
+						*addrl &= ~bit;
+					else if (rop == RROP_WHITE)
+						*addrl |= bit;
+					else if (rop == RROP_INVERT)
+						*addrl ^= bit;
+					e += e1;
+					if (e >= 0) {
+						bit = SCRRIGHT(bit,1);
+						if (!bit) { bit = leftbit;addrl ++; }
+						e += e3;
+					}
+					afbScanlineInc(addrl, yinc);
+					StepDash
+				}
+			} else {
+				while(len--) {
+					if (rop == RROP_BLACK)
+						*addrl &= ~bit;
+					else if (rop == RROP_WHITE)
+						*addrl |= bit;
+					else if (rop == RROP_INVERT)
+						*addrl ^= bit;
+					e += e1;
+					if (e >= 0) {
+						bit = SCRLEFT(bit,1);
+						if (!bit) { bit = rightbit;addrl --; }
+						e += e3;
+					}
+					afbScanlineInc(addrl, yinc);
+					StepDash
+				}
+			}
+		} /* else Y_AXIS */
+	} /* for (d = ...) */
+	*pdashIndex = dashIndex;
+	*pdashOffset = pDash[dashIndex] - dashRemaining;
+}