From a8609eefc1094c3622e19e9ca27d8348e08b193e Mon Sep 17 00:00:00 2001
From: lecoanet
Date: Mon, 26 Jan 2004 10:32:47 +0000
Subject: 	* (Pick): Added a quick bbox test for intersection 	 
 between the pick halo bbox and item bboxes. 	* (ToArea, Pick): Added the
 override atomic feature.         * (ComputeCoordinates): The group bbox is
 clipped on the 	  clip item bounding box.

---
 generic/Group.c | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/generic/Group.c b/generic/Group.c
index 8af883d..737c064 100644
--- a/generic/Group.c
+++ b/generic/Group.c
@@ -681,6 +681,7 @@ ComputeCoordinates(ZnItem	item,
   ZnItem	current_item;
   ZnItem	*deps;
   int		num_deps, i;
+  ZnBBox	*clip_box;
 
   PushTransform(item);
   /*  printf("Group.c\n");
@@ -783,6 +784,14 @@ ComputeCoordinates(ZnItem	item,
     ZnAddBBoxToBBox(&item->item_bounding_box, &current_item->item_bounding_box);
     current_item = current_item->next;    
   }
+  /*
+   * Limit the group actual bounding box to
+   * the clip shape boundary.
+   */
+  if (group->clip) {
+    clip_box = &group->clip->item_bounding_box;
+    ZnIntersectBBox(&item->item_bounding_box, clip_box, &item->item_bounding_box);
+  }
   item->inv_flags = 0;
 
   PopClip(group, False);
@@ -855,7 +864,7 @@ ToArea(ZnItem	item,
      * ask the child groups to report instead of adding their
      * children to the result.
      */
-    atomic = ISSET(item->flags, ATOMIC_BIT);
+    atomic = ISSET(item->flags, ATOMIC_BIT) && !ta->override_atomic;
     ta->report |= atomic;
   }
 
@@ -1211,7 +1220,7 @@ Pick(ZnItem	item,
   }
   
   current_item = (ps->start_item == ZN_NO_ITEM) ? group->head : ps->start_item;
-  atomic = ISSET(item->flags, ATOMIC_BIT);
+  atomic = ISSET(item->flags, ATOMIC_BIT) && !ps->override_atomic;
 
   for ( ; current_item != ZN_NO_ITEM; current_item = current_item->next) {
     /*
@@ -1223,6 +1232,10 @@ Pick(ZnItem	item,
 	ISCLEAR(current_item->flags, ZN_VISIBLE_BIT)) {
       continue;
     }
+    ZnIntersectBBox(&bbox, &current_item->item_bounding_box, &inter);
+    if (ZnIsEmptyBBox(&inter)) {
+      continue;
+    }
     if (current_item->class != ZnGroup) {
       PushTransform(current_item);
       p_item = ps->a_item;
-- 
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