[gtk+/a11y] cellareacontext: Don't ever return -1 for preferred sized

[Benjamin Otte <otte src gnome org>]

commit 7deb4ca8df099a296f0bf67f364ce3afae21133d
Author: Benjamin Otte <otte redhat com>
Date:   Sun Jun 26 22:52:14 2011 +0200

    cellareacontext: Don't ever return -1 for preferred sized
    
    People don't check for -1 when computing size requests. Document this
    new behavior.

 gtk/gtkcellareacontext.c |   28 ++++++++++------------------
 1 files changed, 10 insertions(+), 18 deletions(-)
---
diff --git a/gtk/gtkcellareacontext.c b/gtk/gtkcellareacontext.c
index cc2cbb0..523037b 100644
--- a/gtk/gtkcellareacontext.c
+++ b/gtk/gtkcellareacontext.c
@@ -87,17 +87,9 @@ G_DEFINE_TYPE (GtkCellAreaContext, gtk_cell_area_context, G_TYPE_OBJECT);
 static void
 gtk_cell_area_context_init (GtkCellAreaContext *context)
 {
-  GtkCellAreaContextPrivate *priv;
-
   context->priv = G_TYPE_INSTANCE_GET_PRIVATE (context,
                                                GTK_TYPE_CELL_AREA_CONTEXT,
                                                GtkCellAreaContextPrivate);
-  priv = context->priv;
-
-  priv->min_width  = -1;
-  priv->nat_width  = -1;
-  priv->min_height = -1;
-  priv->nat_height = -1;
 }
 
 static void
@@ -289,27 +281,27 @@ gtk_cell_area_context_real_reset (GtkCellAreaContext *context)
 
   g_object_freeze_notify (G_OBJECT (context));
 
-  if (priv->min_width != -1)
+  if (priv->min_width != 0)
     {
-      priv->min_width = -1;
+      priv->min_width = 0;
       g_object_notify (G_OBJECT (context), "minimum-width");
     }
 
-  if (priv->nat_width != -1)
+  if (priv->nat_width != 0)
     {
-      priv->nat_width = -1;
+      priv->nat_width = 0;
       g_object_notify (G_OBJECT (context), "natural-width");
     }
 
-  if (priv->min_height != -1)
+  if (priv->min_height != 0)
     {
-      priv->min_height = -1;
+      priv->min_height = 0;
       g_object_notify (G_OBJECT (context), "minimum-height");
     }
 
-  if (priv->nat_height != -1)
+  if (priv->nat_height != 0)
     {
-      priv->nat_height = -1;
+      priv->nat_height = 0;
       g_object_notify (G_OBJECT (context), "natural-height");
     }
 
@@ -444,7 +436,7 @@ gtk_cell_area_context_allocate (GtkCellAreaContext *context,
  * requested with this context.
  *
  * After gtk_cell_area_context_reset() is called and/or before ever
- * requesting the size of a #GtkCellArea, the returned values are -1.
+ * requesting the size of a #GtkCellArea, the returned values are 0.
  *
  * Since: 3.0
  */
@@ -478,7 +470,7 @@ gtk_cell_area_context_get_preferred_width (GtkCellAreaContext *context,
  * requested with this context.
  *
  * After gtk_cell_area_context_reset() is called and/or before ever
- * requesting the size of a #GtkCellArea, the returned values are -1.
+ * requesting the size of a #GtkCellArea, the returned values are 0.
  *
  * Since: 3.0
  */