xserver git update 15/5/2010

1 files changed, 280 insertions, 280 deletions

diff --git a/xorg-server/mi/mifpolycon.c b/xorg-server/mi/mifpolycon.c
index 383502f64..8411a1570 100644
--- a/xorg-server/mi/mifpolycon.c
+++ b/xorg-server/mi/mifpolycon.c
@@ -1,280 +1,280 @@
-/***********************************************************
-
-Copyright 1987, 1998  The Open Group
-
-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.
-
-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
-OPEN GROUP 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 Open Group 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 Open Group.
-
-
-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.
-
-******************************************************************/
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#include <math.h>
-#include <X11/X.h>
-#include "gcstruct.h"
-#include "windowstr.h"
-#include "pixmapstr.h"
-#include "mifpoly.h"
-
-static int GetFPolyYBounds(SppPointPtr pts, int n, double yFtrans,
-			   int *by, int *ty);
-
-/*
- *	Written by Todd Newman; April. 1987.
- *
- *	Fill a convex polygon.  If the given polygon
- *	is not convex, then the result is undefined.
- *	The algorithm is to order the edges from smallest
- *	y to largest by partitioning the array into a left
- *	edge list and a right edge list.  The algorithm used
- *	to traverse each edge is digital differencing analyzer
- *	line algorithm with y as the major axis. There's some funny linear
- *	interpolation involved because of the subpixel postioning.
- */
-void
-miFillSppPoly(
-    DrawablePtr		dst,
-    GCPtr		pgc,
-    int			count,          /* number of points */
-    SppPointPtr		ptsIn,          /* the points */
-    int			xTrans, int yTrans,	/* Translate each point by this */
-    double		xFtrans,
-    double		yFtrans                 /* translate before conversion
-						   by this amount.  This provides
-						   a mechanism to match rounding
-						   errors with any shape that must
-						   meet the polygon exactly.
-						 */
-    )
-{
-    double		xl = 0.0, xr = 0.0,	/* x vals of left and right edges */
-          		ml = 0.0,      	/* left edge slope */
-          		mr = 0.0,       /* right edge slope */
-          		dy,             /* delta y */
-    			i;              /* loop counter */
-    int			y,              /* current scanline */
-    			j,
-    			imin,           /* index of vertex with smallest y */
-    			ymin,           /* y-extents of polygon */
-    			ymax,
-    			*width,
-    			*FirstWidth,    /* output buffer */
-    	 		*Marked;	/* set if this vertex has been used */
-    int			left, right,	/* indices to first endpoints */
-    			nextleft,
-                 	nextright;	/* indices to second endpoints */
-    DDXPointPtr 	ptsOut,
-    			FirstPoint;	/* output buffer */
-
-    if (pgc->miTranslate)
-    {
-	xTrans += dst->x;
-	yTrans += dst->y;
-    }
-
-    imin = GetFPolyYBounds(ptsIn, count, yFtrans, &ymin, &ymax);
-
-    y = ymax - ymin + 1;
-    if ((count < 3) || (y <= 0))
-	return;
-    ptsOut = FirstPoint = xalloc(sizeof(DDXPointRec) * y);
-    width = FirstWidth = xalloc(sizeof(int) * y);
-    Marked = xalloc(sizeof(int) * count);
-
-    if(!ptsOut || !width || !Marked)
-    {
-	if (Marked) xfree(Marked);
-	if (width) xfree(width);
-	if (ptsOut) xfree(ptsOut);
-	return;
-    }
-
-    for(j = 0; j < count; j++)
-	Marked[j] = 0;
-    nextleft = nextright = imin;
-    Marked[imin] = -1;
-    y = ICEIL(ptsIn[nextleft].y + yFtrans);
-
-    /*
-     *  loop through all edges of the polygon
-     */
-    do
-    {
-        /* add a left edge if we need to */
-        if ((y > (ptsIn[nextleft].y + yFtrans) ||
- 	     ISEQUAL(y, ptsIn[nextleft].y + yFtrans)) &&
-	     Marked[nextleft] != 1)
-	{
-	    Marked[nextleft]++;
-            left = nextleft++;
-
-            /* find the next edge, considering the end conditions */
-            if (nextleft >= count)
-                nextleft = 0;
-
-            /* now compute the starting point and slope */
-	    dy = ptsIn[nextleft].y - ptsIn[left].y;
-	    if (dy != 0.0)
-	    { 
-		ml = (ptsIn[nextleft].x - ptsIn[left].x) / dy;
-		dy = y - (ptsIn[left].y + yFtrans);
-		xl = (ptsIn[left].x + xFtrans) + ml * max(dy, 0); 
-	    }
-        }
-
-        /* add a right edge if we need to */
-        if ((y > ptsIn[nextright].y + yFtrans) ||
- 	     (ISEQUAL(y, ptsIn[nextright].y + yFtrans)
-	     && Marked[nextright] != 1))
-	{
-	    Marked[nextright]++;
-            right = nextright--;
-
-            /* find the next edge, considering the end conditions */
-            if (nextright < 0)
-                nextright = count - 1;
-
-            /* now compute the starting point and slope */
-	    dy = ptsIn[nextright].y - ptsIn[right].y;
-	    if (dy != 0.0) 
-	    { 
-		mr = (ptsIn[nextright].x - ptsIn[right].x) / dy;
-		dy = y - (ptsIn[right].y + yFtrans); 
-		xr = (ptsIn[right].x + xFtrans) + mr * max(dy, 0);
-	    }
-        }
-
-
-        /*
-         *  generate scans to fill while we still have
-         *  a right edge as well as a left edge.
-         */
-        i = (min(ptsIn[nextleft].y, ptsIn[nextright].y) + yFtrans) - y;
-
-	if (i < EPSILON)
-	{
-	    if(Marked[nextleft] && Marked[nextright])
-	    {
-	        /* Arrgh, we're trapped! (no more points) 
-	         * Out, we've got to get out of here before this decadence saps
-	         * our will completely! */
-	        break;
-	    }
-	    continue;
-	}
-	else
-	{
-		j = (int) i;
-		if(!j)
-		    j++;
-	}
-        while (j > 0) 
-        {
-	    int cxl, cxr;
-
-            ptsOut->y = (y) + yTrans;
-
-	    cxl = ICEIL(xl);
-	    cxr = ICEIL(xr);
-            /* reverse the edges if necessary */
-            if (xl < xr) 
-            {
-                *(width++) = cxr - cxl;
-                (ptsOut++)->x = cxl + xTrans;
-            }
-            else 
-            {
-                *(width++) = cxl - cxr;
-                (ptsOut++)->x = cxr + xTrans;
-            }
-            y++;
-
-            /* increment down the edges */
-	    xl += ml;
-	    xr += mr;
-	    j--;
-        }
-    }  while (y <= ymax);
-
-    /* Finally, fill the spans we've collected */
-    (*pgc->ops->FillSpans)(dst, pgc, 
-		      ptsOut-FirstPoint, FirstPoint, FirstWidth, 1);
-    xfree(Marked);
-    xfree(FirstWidth);
-    xfree(FirstPoint);
-}
-
-
-/* Find the index of the point with the smallest y.also return the
- * smallest and largest y */
-static
-int
-GetFPolyYBounds(
-    SppPointPtr			pts,
-    int 			n,
-    double			yFtrans,
-    int 			*by,
-    int				*ty)
-{
-    SppPointPtr			ptMin;
-    double 			ymin, ymax;
-    SppPointPtr			ptsStart = pts;
-
-    ptMin = pts;
-    ymin = ymax = (pts++)->y;
-
-    while (--n > 0) {
-        if (pts->y < ymin)
-	{
-            ptMin = pts;
-            ymin = pts->y;
-        }
-	if(pts->y > ymax)
-            ymax = pts->y;
-
-        pts++;
-    }
-
-    *by = ICEIL(ymin + yFtrans);
-    *ty = ICEIL(ymax + yFtrans - 1);
-    return(ptMin-ptsStart);
-}
+/***********************************************************

+

+Copyright 1987, 1998  The Open Group

+

+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.

+

+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

+OPEN GROUP 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 Open Group 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 Open Group.

+

+

+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.

+

+******************************************************************/

+#ifdef HAVE_DIX_CONFIG_H

+#include <dix-config.h>

+#endif

+

+#include <math.h>

+#include <X11/X.h>

+#include "gcstruct.h"

+#include "windowstr.h"

+#include "pixmapstr.h"

+#include "mifpoly.h"

+

+static int GetFPolyYBounds(SppPointPtr pts, int n, double yFtrans,

+			   int *by, int *ty);

+

+/*

+ *	Written by Todd Newman; April. 1987.

+ *

+ *	Fill a convex polygon.  If the given polygon

+ *	is not convex, then the result is undefined.

+ *	The algorithm is to order the edges from smallest

+ *	y to largest by partitioning the array into a left

+ *	edge list and a right edge list.  The algorithm used

+ *	to traverse each edge is digital differencing analyzer

+ *	line algorithm with y as the major axis. There's some funny linear

+ *	interpolation involved because of the subpixel postioning.

+ */

+void

+miFillSppPoly(

+    DrawablePtr		dst,

+    GCPtr		pgc,

+    int			count,          /* number of points */

+    SppPointPtr		ptsIn,          /* the points */

+    int			xTrans, int yTrans,	/* Translate each point by this */

+    double		xFtrans,

+    double		yFtrans                 /* translate before conversion

+						   by this amount.  This provides

+						   a mechanism to match rounding

+						   errors with any shape that must

+						   meet the polygon exactly.

+						 */

+    )

+{

+    double		xl = 0.0, xr = 0.0,	/* x vals of left and right edges */

+          		ml = 0.0,      	/* left edge slope */

+          		mr = 0.0,       /* right edge slope */

+          		dy,             /* delta y */

+    			i;              /* loop counter */

+    int			y,              /* current scanline */

+    			j,

+    			imin,           /* index of vertex with smallest y */

+    			ymin,           /* y-extents of polygon */

+    			ymax,

+    			*width,

+    			*FirstWidth,    /* output buffer */

+    	 		*Marked;	/* set if this vertex has been used */

+    int			left, right,	/* indices to first endpoints */

+    			nextleft,

+                 	nextright;	/* indices to second endpoints */

+    DDXPointPtr 	ptsOut,

+    			FirstPoint;	/* output buffer */

+

+    if (pgc->miTranslate)

+    {

+	xTrans += dst->x;

+	yTrans += dst->y;

+    }

+

+    imin = GetFPolyYBounds(ptsIn, count, yFtrans, &ymin, &ymax);

+

+    y = ymax - ymin + 1;

+    if ((count < 3) || (y <= 0))

+	return;

+    ptsOut = FirstPoint = malloc(sizeof(DDXPointRec) * y);

+    width = FirstWidth = malloc(sizeof(int) * y);

+    Marked = malloc(sizeof(int) * count);

+

+    if(!ptsOut || !width || !Marked)

+    {

+	if (Marked) free(Marked);

+	if (width) free(width);

+	if (ptsOut) free(ptsOut);

+	return;

+    }

+

+    for(j = 0; j < count; j++)

+	Marked[j] = 0;

+    nextleft = nextright = imin;

+    Marked[imin] = -1;

+    y = ICEIL(ptsIn[nextleft].y + yFtrans);

+

+    /*

+     *  loop through all edges of the polygon

+     */

+    do

+    {

+        /* add a left edge if we need to */

+        if ((y > (ptsIn[nextleft].y + yFtrans) ||

+ 	     ISEQUAL(y, ptsIn[nextleft].y + yFtrans)) &&

+	     Marked[nextleft] != 1)

+	{

+	    Marked[nextleft]++;

+            left = nextleft++;

+

+            /* find the next edge, considering the end conditions */

+            if (nextleft >= count)

+                nextleft = 0;

+

+            /* now compute the starting point and slope */

+	    dy = ptsIn[nextleft].y - ptsIn[left].y;

+	    if (dy != 0.0)

+	    { 

+		ml = (ptsIn[nextleft].x - ptsIn[left].x) / dy;

+		dy = y - (ptsIn[left].y + yFtrans);

+		xl = (ptsIn[left].x + xFtrans) + ml * max(dy, 0); 

+	    }

+        }

+

+        /* add a right edge if we need to */

+        if ((y > ptsIn[nextright].y + yFtrans) ||

+ 	     (ISEQUAL(y, ptsIn[nextright].y + yFtrans)

+	     && Marked[nextright] != 1))

+	{

+	    Marked[nextright]++;

+            right = nextright--;

+

+            /* find the next edge, considering the end conditions */

+            if (nextright < 0)

+                nextright = count - 1;

+

+            /* now compute the starting point and slope */

+	    dy = ptsIn[nextright].y - ptsIn[right].y;

+	    if (dy != 0.0) 

+	    { 

+		mr = (ptsIn[nextright].x - ptsIn[right].x) / dy;

+		dy = y - (ptsIn[right].y + yFtrans); 

+		xr = (ptsIn[right].x + xFtrans) + mr * max(dy, 0);

+	    }

+        }

+

+

+        /*

+         *  generate scans to fill while we still have

+         *  a right edge as well as a left edge.

+         */

+        i = (min(ptsIn[nextleft].y, ptsIn[nextright].y) + yFtrans) - y;

+

+	if (i < EPSILON)

+	{

+	    if(Marked[nextleft] && Marked[nextright])

+	    {

+	        /* Arrgh, we're trapped! (no more points) 

+	         * Out, we've got to get out of here before this decadence saps

+	         * our will completely! */

+	        break;

+	    }

+	    continue;

+	}

+	else

+	{

+		j = (int) i;

+		if(!j)

+		    j++;

+	}

+        while (j > 0) 

+        {

+	    int cxl, cxr;

+

+            ptsOut->y = (y) + yTrans;

+

+	    cxl = ICEIL(xl);

+	    cxr = ICEIL(xr);

+            /* reverse the edges if necessary */

+            if (xl < xr) 

+            {

+                *(width++) = cxr - cxl;

+                (ptsOut++)->x = cxl + xTrans;

+            }

+            else 

+            {

+                *(width++) = cxl - cxr;

+                (ptsOut++)->x = cxr + xTrans;

+            }

+            y++;

+

+            /* increment down the edges */

+	    xl += ml;

+	    xr += mr;

+	    j--;

+        }

+    }  while (y <= ymax);

+

+    /* Finally, fill the spans we've collected */

+    (*pgc->ops->FillSpans)(dst, pgc, 

+		      ptsOut-FirstPoint, FirstPoint, FirstWidth, 1);

+    free(Marked);

+    free(FirstWidth);

+    free(FirstPoint);

+}

+

+

+/* Find the index of the point with the smallest y.also return the

+ * smallest and largest y */

+static

+int

+GetFPolyYBounds(

+    SppPointPtr			pts,

+    int 			n,

+    double			yFtrans,

+    int 			*by,

+    int				*ty)

+{

+    SppPointPtr			ptMin;

+    double 			ymin, ymax;

+    SppPointPtr			ptsStart = pts;

+

+    ptMin = pts;

+    ymin = ymax = (pts++)->y;

+

+    while (--n > 0) {

+        if (pts->y < ymin)

+	{

+            ptMin = pts;

+            ymin = pts->y;

+        }

+	if(pts->y > ymax)

+            ymax = pts->y;

+

+        pts++;

+    }

+

+    *by = ICEIL(ymin + yFtrans);

+    *ty = ICEIL(ymax + yFtrans - 1);

+    return(ptMin-ptsStart);

+}