Normalize bounding box retrieved from PostScript BBox parameter in the

shading dictionary because Adobe interpreters accept denormalized box.
Bug 688937, customer 200.

DIFFERENCES:
None

git-svn-id: http://svn.ghostscript.com/ghostscript/trunk@7121 a1074d23-0009-0410-80fe-cf8c14f379e6

1 files changed, 15 insertions, 4 deletions

diff --git a/gs/src/zshade.c b/gs/src/zshade.c
index 7c6151320..bf1d16415 100644
--- a/gs/src/zshade.c
+++ b/gs/src/zshade.c
@@ -195,10 +195,21 @@ build_shading(i_ctx_t *i_ctx_p, build_shading_proc_t proc)
 	params.have_BBox = false;
     else if ((code = dict_floats_param(imemory, op, "BBox", 
 				       4, box, NULL)) == 4) {
-	params.BBox.p.x = box[0];
-	params.BBox.p.y = box[1];
-	params.BBox.q.x = box[2];
-	params.BBox.q.y = box[3];
+	/* Adobe Interpreters accept denormalised BBox - bug 688937 */
+        if (box[0] <= box[2]) {
+            params.BBox.p.x = box[0];
+ 	    params.BBox.q.x = box[2];
+        } else {
+            params.BBox.p.x = box[2];
+ 	    params.BBox.q.x = box[0];
+        }
+	if (box[1] <= box[3]) {
+            params.BBox.p.y = box[1];
+	    params.BBox.q.y = box[3];
+        } else {
+            params.BBox.p.y = box[3];
+	    params.BBox.q.y = box[1];
+        }
 	params.have_BBox = true;
     } else
 	goto fail;