From 709009bfb836f4bac7ff74318b295349df1a4a9d Mon Sep 17 00:00:00 2001
From: lecoanet
Date: Fri, 20 Dec 2002 13:51:29 +0000
Subject:         * Corrige un bug provoquant une boucle infinie lorsque 
   l'on employe un tag dans la commande lower.

---
 generic/tkZinc.c | 105 ++++++++++++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 97 insertions(+), 8 deletions(-)

(limited to 'generic/tkZinc.c')

diff --git a/generic/tkZinc.c b/generic/tkZinc.c
index d360539..1b5471c 100644
--- a/generic/tkZinc.c
+++ b/generic/tkZinc.c
@@ -1970,6 +1970,80 @@ ZnItemWithTagOrId(WidgetInfo	*wi,
 /*
  *----------------------------------------------------------------------
  *
+ * LayoutItems --
+ *
+ *	Perform layouts on items. It can position items horizontally,
+ *	vertically, along a path or with respect to a reference item.
+ *	It can also align on a grid and resize items to a common
+ *	reference.
+ *
+ *----------------------------------------------------------------------
+ */
+static int
+LayoutItems(WidgetInfo	*wi,
+	    int		argc,
+	    Tcl_Obj	*CONST args[])
+{
+  int		index, result;
+  Item		item;
+  static CONST char *layout_cmd_strings[] = {
+    "bbalign", "valign", "halign", "align",
+    "position", "grid", "size", NULL
+  };
+  enum		layout_cmds {
+    ZN_L_BBALIGN, ZN_L_VALIGN, ZN_L_HALIGN,  ZN_L_ALIGN,
+    ZN_L_POSITION, ZN_L_GRID, ZN_L_SIZE
+  };
+  
+  if (Tcl_GetIndexFromObj(wi->interp, args[0], layout_cmd_strings,
+			  "align command", 0, &index) != ZN_OK) {
+    return ZN_ERROR;
+  }
+  switch((enum layout_cmds) index) {
+    /*
+     * align
+     */
+  case ZN_L_ALIGN:
+    break;
+    /*
+     * halign
+     */
+  case ZN_L_HALIGN:
+    break;
+    /*
+     * valign
+     */
+  case ZN_L_VALIGN:
+    break;
+    /*
+     * bbalign
+     */
+  case ZN_L_BBALIGN:
+    break;
+    /*
+     * position
+     */
+  case ZN_L_POSITION:
+    break;
+    /*
+     * grid
+     */
+  case ZN_L_GRID:
+    break;
+    /*
+     * size
+     */
+  case ZN_L_SIZE:
+    break;
+  }
+
+  return ZN_OK;
+}
+
+
+/*
+ *----------------------------------------------------------------------
+ *
  * ZnDoItem --
  *
  *	Either add a tag to an item or add the item id/part to the
@@ -2955,7 +3029,7 @@ WidgetObjCmd(ClientData		client_data,	/* Information about the widget. */
     "coords", "currentpart", "cursor", "dchars",
     "dtag", "find", "fit", "focus", "gdelete", "gettags",
     "gname", "group", "hasanchors", "hasfields", "hastag",
-    "index", "insert", "itemcget", "itemconfigure",
+    "index", "insert", "itemcget", "itemconfigure", "layout",
     "lower", "monitor", "numparts", "postscript", "raise",
     "remove", "rotate", "scale", "select", "smooth",
     "tapply", "tdelete", "transform", "translate", "treset",
@@ -2967,7 +3041,7 @@ WidgetObjCmd(ClientData		client_data,	/* Information about the widget. */
     ZN_W_CONTOUR, ZN_W_COORDS, ZN_W_CURRENTPART, ZN_W_CURSOR, ZN_W_DCHARS,
     ZN_W_DTAG, ZN_W_FIND, ZN_W_FIT, ZN_W_FOCUS, ZN_W_GDELETE, ZN_W_GETTAGS,
     ZN_W_GNAME, ZN_W_GROUP, ZN_W_HASANCHORS, ZN_W_HASFIELDS, ZN_W_HASTAG,
-    ZN_W_INDEX, ZN_W_INSERT, ZN_W_ITEMCGET, ZN_W_ITEMCONFIGURE,
+    ZN_W_INDEX, ZN_W_INSERT, ZN_W_ITEMCGET, ZN_W_ITEMCONFIGURE, ZN_W_LAYOUT,
     ZN_W_LOWER, ZN_W_MONITOR, ZN_W_NUMPARTS, ZN_W_POSTSCRIPT, ZN_W_RAISE,
     ZN_W_REMOVE, ZN_W_ROTATE, ZN_W_SCALE, ZN_W_SELECT, ZN_W_SMOOTH,
     ZN_W_TAPPLY, ZN_W_TDELETE, ZN_W_TRANSFORM, ZN_W_TRANSLATE, ZN_W_TRESET,
@@ -4015,11 +4089,26 @@ WidgetObjCmd(ClientData		client_data,	/* Information about the widget. */
     }
     break;
     /*
+     * layout
+     */
+  case ZN_W_LAYOUT:
+    {
+      if (argc < 4) {
+	Tcl_WrongNumArgs(interp, 1, args,
+			 "layout operator ?args...? tagOrId ?tagOrId...?");
+	goto error;
+      }
+      if (LayoutItems(wi, argc-2, args+2) == ZN_ERROR) {
+	goto error;
+      }
+    }
+    break;
+    /*
      * lower
      */
   case ZN_W_LOWER:
     {
-      Item      group, mark = ZN_NO_ITEM;
+      Item      first, group, mark = ZN_NO_ITEM;
       
       if (argc < 3) {
 	Tcl_WrongNumArgs(interp, 1, args, "lower tagOrId ?belowThis?");
@@ -4046,19 +4135,19 @@ WidgetObjCmd(ClientData		client_data,	/* Information about the widget. */
       if (item == ZN_NO_ITEM) {
 	goto done;
       }
+      first = item;
       if (mark == ZN_NO_ITEM) {
 	mark = ZnGroupTail(item->parent);
       }
       group = mark->parent;
-      for (; item != ZN_NO_ITEM; item = ZnTagSearchNext(search_var)) {
-	if (item->parent != group) {
-	  continue;
-	}
-	if (item != mark) {
+      do {
+	if ((item->parent == group) && (item != mark)) {
 	  ITEM.UpdateItemPriority(item, mark, False);
 	  mark = item;
 	}
+	item = ZnTagSearchNext(search_var);
       }
+      while ((item != ZN_NO_ITEM) && (item != first));
     }
     break;
     /*
-- 
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