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, 122 insertions, 0 deletions

diff --git a/nx-X11/programs/Xserver/fb/fbarc.c b/nx-X11/programs/Xserver/fb/fbarc.c
new file mode 100644
index 000000000..315aa181c
--- /dev/null
+++ b/nx-X11/programs/Xserver/fb/fbarc.c
@@ -0,0 +1,122 @@
+/*
+ * Id: fbarc.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/fbarc.c,v 1.7tsi Exp $ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include "fb.h"
+#include "mizerarc.h"
+#ifdef IN_MODULE
+#include "xf86_ansic.h"
+#endif
+
+typedef void	(*FbArc) (FbBits    *dst, 
+			  FbStride  dstStride, 
+			  int	    dstBpp, 
+			  xArc	    *arc, 
+			  int	    dx,
+			  int	    dy,
+			  FbBits    and, 
+			  FbBits    xor);
+
+void
+fbPolyArc (DrawablePtr	pDrawable,
+	   GCPtr	pGC,
+	   int		narcs,
+	   xArc		*parcs)
+{
+    FbArc	arc;
+    
+    if (pGC->lineWidth == 0)
+    {
+#ifndef FBNOPIXADDR
+	arc = 0;
+	if (pGC->lineStyle == LineSolid && pGC->fillStyle == FillSolid)
+	{
+	    switch (pDrawable->bitsPerPixel)
+	    {
+	    case 8:	arc = fbArc8; break;
+	    case 16:    arc = fbArc16; break;
+#ifdef FB_24BIT
+	    case 24:	arc = fbArc24; break;
+#endif
+	    case 32:    arc = fbArc32; break;
+	    }
+	}
+	if (arc)
+	{
+	    FbGCPrivPtr	pPriv = fbGetGCPrivate (pGC);
+	    FbBits	*dst;
+	    FbStride	dstStride;
+	    int		dstBpp;
+	    int		dstXoff, dstYoff;
+	    BoxRec	box;
+	    int		x2, y2;
+	    RegionPtr	cclip;
+	    
+	    cclip = fbGetCompositeClip (pGC);
+	    fbGetDrawable (pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff);
+	    while (narcs--)
+	    {
+		if (miCanZeroArc (parcs))
+		{
+		    box.x1 = parcs->x + pDrawable->x;
+		    box.y1 = parcs->y + pDrawable->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)parcs->width + 1;
+		    box.x2 = x2;
+		    y2 = box.y1 + (int)parcs->height + 1;
+		    box.y2 = y2;
+		    if ( (x2 <= MAXSHORT) && (y2 <= MAXSHORT) &&
+			(RECT_IN_REGION(pDrawable->pScreen, cclip, &box) == rgnIN) )
+			(*arc) (dst, dstStride, dstBpp, 
+				parcs, pDrawable->x + dstXoff, pDrawable->y + dstYoff, 
+				pPriv->and, pPriv->xor);
+		    else
+			miZeroPolyArc(pDrawable, pGC, 1, parcs);
+		}
+		else
+		    miPolyArc(pDrawable, pGC, 1, parcs);
+		parcs++;
+	    }
+	}
+	else
+#endif
+	    miZeroPolyArc (pDrawable, pGC, narcs, parcs);
+    }
+    else
+	miPolyArc (pDrawable, pGC, narcs, parcs);
+}