[gtk+/native-layout] Restore layout in get_desired_size() after guessing a wrap width

[Tristan Van Berkom <tvb src gnome org>]

commit 80428e7745bc122c13ac4ea43c53e94c4120181f
Author: Tristan Van Berkom <tristan van berkom gmail com>
Date:   Tue Apr 20 14:16:13 2010 -0400

    Restore layout in get_desired_size() after guessing a wrap width
    
    This fixes the label layout in cases where gtk_widget_size_request()
    is called on a label without a following size_allocate(), for instance
    when a button state changes.

 gtk/gtklabel.c |   15 ++++++++++++---
 1 files changed, 12 insertions(+), 3 deletions(-)
---
diff --git a/gtk/gtklabel.c b/gtk/gtklabel.c
index ff210fe..5446d91 100644
--- a/gtk/gtklabel.c
+++ b/gtk/gtklabel.c
@@ -3350,11 +3350,10 @@ gtk_label_get_desired_size (GtkExtendedLayout *layout,
    *    - minimum size should be MAX (width-chars, 0)
    *    - natural size should be MIN (max-width-chars, strlen (label->text))
    *
-   *
-   *
    */
 
-  /* Refresh layout if needed */
+  /* When calculating ->wrap sometimes we need to invent a size; Ideally we should be doing
+   * that stuff here instead of inside gtk_label_ensure_layout() */
   if (label->wrap)
     gtk_label_clear_layout (label);
   gtk_label_ensure_layout (label, TRUE);
@@ -3430,6 +3429,16 @@ gtk_label_get_desired_size (GtkExtendedLayout *layout,
 	  *natural_size = natural_rect.height + label->misc.ypad * 2;
 	}
     }
+
+  /* Restore real allocated size of layout; sometimes size-requests
+   * are randomly called without a following allocation; for this case
+   * we need to make sure we dont have a mucked up layout because we
+   * went and guessed the wrap-size.
+   */
+  if (label->wrap)
+    gtk_label_clear_layout (label);
+  gtk_label_ensure_layout (label, FALSE);
+
 }