From e01f4240a3dc15fa147b22158212536698a12b95 Mon Sep 17 00:00:00 2001
From: lecoanet
Date: Wed, 24 Oct 2001 13:12:12 +0000
Subject: Ajout d'un alpha aux groupes et expression de l'alpha en pourcent

---
 generic/Group.c | 20 ++++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

(limited to 'generic/Group.c')

diff --git a/generic/Group.c b/generic/Group.c
index 84e0692..d2f290b 100644
--- a/generic/Group.c
+++ b/generic/Group.c
@@ -48,6 +48,8 @@ static const char compile_id[]="$Compile: " __FILE__ " " __DATE__ " " __TIME__ "
  **********************************************************************************
  */
 static ZnAttrConfig	group_attrs[] = {
+  { ZN_CONFIG_ALPHA, "-alpha", NULL,
+    Tk_Offset(GroupItemStruct, alpha), 0, ZN_DRAW_FLAG, False },
   { ZN_CONFIG_BOOL, "-atomic", NULL,
     Tk_Offset(GroupItemStruct, header.flags), ATOMIC_BIT,
     ZN_REPICK_FLAG, False },
@@ -93,6 +95,7 @@ Init(Item		item,
   group->head = ZN_NO_ITEM;
   group->tail = ZN_NO_ITEM;
   group->clip = ZN_NO_ITEM;
+  group->alpha = 100;
   group->dependents = NULL;
   SET(item->flags, VISIBLE_BIT);
   SET(item->flags, SENSITIVE_BIT);
@@ -854,17 +857,19 @@ Draw(Item 	item)
 static void
 Render(Item 	item)
 {
+#ifdef GLX
   GroupItem	group = (GroupItem) item;
   Item		current_item;
-#ifndef GLX
   WidgetInfo	*wi = item->wi;
   ZnBBox	*clip_box;
   ZnBBox	bbox, old_damaged_area;
-#endif
+  unsigned char	save_alpha = wi->alpha;
+
+  wi->alpha = wi->alpha * group->alpha / 100;
   
   PushTransform(item);
   PushClip(group, True);
-#ifndef GLX
+#if 0
   if (group->clip != ZN_NO_ITEM) {
     ITEM_P.CurrentClip(wi, NULL, &clip_box, NULL);
     old_damaged_area = wi->damaged_area;
@@ -876,7 +881,7 @@ Render(Item 	item)
   current_item = group->tail;
   while (current_item != ZN_NO_ITEM) {
     if (ISSET(current_item->flags, VISIBLE_BIT)) {
-#ifndef GLX
+#if 0
       IntersectBBox(&wi->damaged_area, &current_item->item_bounding_box, &bbox);
       if (!IsEmptyBBox(&bbox)) {
 #endif
@@ -887,14 +892,14 @@ Render(Item 	item)
 	if (current_item->class != ZnGroup) {
 	  PopTransform(current_item);
 	}
-#ifndef GLX
+#if 0
       }
 #endif
     }
     current_item = current_item->previous;
   }
 
-#ifndef GLX
+#if 0
   if (group->clip != ZN_NO_ITEM) {
     wi->damaged_area = old_damaged_area;
   }
@@ -902,6 +907,9 @@ Render(Item 	item)
   
   PopClip(group, True);
   PopTransform(item);
+
+  wi->alpha = save_alpha;
+#endif
 }
 
 
-- 
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