From 1465e32d6f48b47c212651399bc8afe8633dd8f2 Mon Sep 17 00:00:00 2001
From: lecoanet
Date: Mon, 2 Sep 2002 12:26:58 +0000
Subject: 	* (Contour): Lorsque l'on utilise contour sur un item ne 
   supportant pas la commande, au lieu d'une erreur, la commande 	 
 retourne le nombre de contours (0 ou 1 en l'occurence). 	  Si la
 commande est appel�e sans sous-commande bool�enne, elle 	  retourne le
 nombre de contours de l'item. 	* (Contour): Corrige un message d'erreur vide
 en cas d'item ou de           tag non trouv�.         * (WidgetObjCmd):
 Corrige le traitement des erreurs dans la 	  commande gname

---
 generic/tkZinc.c | 31 ++++++++++++++++++++++---------
 1 file changed, 22 insertions(+), 9 deletions(-)

(limited to 'generic/tkZinc.c')

diff --git a/generic/tkZinc.c b/generic/tkZinc.c
index a21f8f6..b8d14aa 100644
--- a/generic/tkZinc.c
+++ b/generic/tkZinc.c
@@ -2451,16 +2451,31 @@ Contour(WidgetInfo	*wi,
   
   result = ZnItemWithTagOrId(wi, args[2], &item, search_var);
   if ((result == ZN_ERROR) || (item == ZN_NO_ITEM)){
+    Tcl_AppendResult(wi->interp, "unknown item \"", Tcl_GetString(args[2]),
+		     "\"", NULL);
     return ZN_ERROR;
   }
   if (!item->class->Contour) {
-    Tcl_AppendResult(wi->interp, "class: \"", item->class->name,
-		     "\" doesn't handle the contour method", NULL);
-    return ZN_ERROR;
+    if (item->class->GetClipVertices ||
+	item->class->GetContours) {
+      Tcl_SetObjResult(wi->interp, Tcl_NewIntObj(1));
+    }
+    else {
+      Tcl_SetObjResult(wi->interp, Tcl_NewIntObj(0));
+    }
+    return ZN_OK;
+  }
+  if (argc == 3) {
+    /*
+     * Requesting the number of contours.
+     */
+    Tcl_SetObjResult(wi->interp, Tcl_NewIntObj(item->class->Contour(item, -1, NULL)));
+    
   }
-
   if (Tcl_GetIndexFromObj(wi->interp, args[3], op_strings,
 			  "polygon operator", 0, &index) != ZN_OK) {
+    Tcl_AppendResult(wi->interp, "unknown contour operator \"", Tcl_GetString(args[3]),
+		     "\"", NULL);
     return ZN_ERROR;
   }
   cmd = ops[index];
@@ -2552,7 +2567,7 @@ Contour(WidgetInfo	*wi,
     }
   }
 
-  item->class->Contour(item, cmd, &poly);
+  Tcl_SetObjResult(wi->interp, Tcl_NewIntObj(item->class->Contour(item, cmd, &poly)));
 
   if (!simple) {
     POLY_FREE(&poly);
@@ -3216,9 +3231,9 @@ WidgetObjCmd(ClientData		client_data,	/* Information about the widget. */
   case ZN_W_CONTOUR:
     {
 #ifdef GPC
-      if (argc != 5) {
+      if ((argc != 5) && (argc != 3)) {
 	Tcl_WrongNumArgs(interp, 1, args,
-			 "contour tagOrId operator coordListOrTagOrId");
+			 "contour tagOrId ?operator coordListOrTagOrId?");
 	goto error;
       }
       if (Contour(wi, argc, args, &search_var) == ZN_ERROR) {
@@ -3580,8 +3595,6 @@ WidgetObjCmd(ClientData		client_data,	/* Information about the widget. */
 	ok = ZnNameGradient(interp, wi->win, Tcl_GetString(args[2]),
 			    Tcl_GetString(args[3]));
 	if (!ok) {
-	  Tcl_AppendResult(interp, "gradient name \"", Tcl_GetString(args[3]),
-			   "\", already in use or incorrect specification", NULL);
 	  goto error;
 	}
       }
-- 
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