Initial revision

1 files changed, 111 insertions, 0 deletions

diff --git a/fb/fbfillrect.c b/fb/fbfillrect.c
new file mode 100644
index 000000000..d0468e041
--- /dev/null
+++ b/fb/fbfillrect.c
@@ -0,0 +1,111 @@
+/*
+ * Id: fbfillrect.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/fbfillrect.c,v 1.2 2000/02/23 20:29:43 dawes Exp $ */
+
+#include "fb.h"
+
+void
+fbPolyFillRect(DrawablePtr  pDrawable, 
+	       GCPtr	    pGC, 
+	       int	    nrect,
+	       xRectangle   *prect)
+{
+    RegionPtr	    pClip = fbGetCompositeClip(pGC);
+    register BoxPtr pbox;
+    BoxPtr	    pextent;
+    int		    extentX1, extentX2, extentY1, extentY2;
+    int		    fullX1, fullX2, fullY1, fullY2;
+    int		    partX1, partX2, partY1, partY2;
+    int		    xorg, yorg;
+    int		    n;
+
+    xorg = pDrawable->x;
+    yorg = pDrawable->y;
+    
+    pextent = REGION_EXTENTS(pGC->pScreen, pClip);
+    extentX1 = pextent->x1;
+    extentY1 = pextent->y1;
+    extentX2 = pextent->x2;
+    extentY2 = pextent->y2;
+    while (nrect--)
+    {
+	fullX1 = prect->x + xorg;
+	fullY1 = prect->y + yorg;
+	fullX2 = fullX1 + (int) prect->width;
+	fullY2 = fullY1 + (int) prect->height;
+	prect++;
+	
+	if (fullX1 < extentX1)
+	    fullX1 = extentX1;
+
+	if (fullY1 < extentY1)
+	    fullY1 = extentY1;
+
+	if (fullX2 > extentX2)
+	    fullX2 = extentX2;
+	
+	if (fullY2 > extentY2)
+	    fullY2 = extentY2;
+
+	if ((fullX1 >= fullX2) || (fullY1 >= fullY2))
+	    continue;
+	n = REGION_NUM_RECTS (pClip);
+	if (n == 1)
+	{
+	    fbFill (pDrawable,
+		    pGC,
+		    fullX1, fullY1, fullX2-fullX1, fullY2-fullY1);
+	}
+	else
+	{
+	    pbox = REGION_RECTS(pClip);
+	    /* 
+	     * clip the rectangle to each box in the clip region
+	     * this is logically equivalent to calling Intersect()
+	     */
+	    while(n--)
+	    {
+		partX1 = pbox->x1;
+		if (partX1 < fullX1)
+		    partX1 = fullX1;
+		partY1 = pbox->y1;
+		if (partY1 < fullY1)
+		    partY1 = fullY1;
+		partX2 = pbox->x2;
+		if (partX2 > fullX2)
+		    partX2 = fullX2;
+		partY2 = pbox->y2;
+		if (partY2 > fullY2)
+		    partY2 = fullY2;
+    
+		pbox++;
+		
+		if (partX1 < partX2 && partY1 < partY2)
+		    fbFill (pDrawable, pGC,
+			    partX1, partY1,
+			    partX2 - partX1, partY2 - partY1);
+	    }
+	}
+    }
+}