[gobject-introspection] Fix g_irepository_find_by_gtype() for GDK_TYPE_RECTANGLE

[Pavel Holejsovsky <pholejs src gnome org>]

commit f51eb6415dcee0656e9dec3aa19264ad2354aa06
Author: Pavel Holejsovsky <pholejs src gnome org>
Date:   Fri Aug 19 21:20:10 2011 +0200

    Fix g_irepository_find_by_gtype() for GDK_TYPE_RECTANGLE
    
    Complement fix for g-ir-scanner which converts every GdkRectangle
    gtype to CairoRectangleInt.  Make sure that C-side API is also aware
    of this workaround.
    
    Use case requiring this patch:
    
    When binding implementation wants to get/set property, it can use either
    GI-based approach (g_property_info_xxx() funcs), or just GLib facilities.
    Although former is probably preferred, there are cases when latter is still
    needed (e.g. gstreamer uses dynamic properties, which are not present in the
    gir).  In this case, binding implementation queries the type of the propertyb
    (using g_object_class_find_property()), it gets GDK_TYPE_RECTANGLE,
    and without the patch it cannot map it to any known type.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=655423

 girepository/gitypelib.c |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)
---
diff --git a/girepository/gitypelib.c b/girepository/gitypelib.c
index 2e5b0e1..dcc2651 100644
--- a/girepository/gitypelib.c
+++ b/girepository/gitypelib.c
@@ -208,6 +208,17 @@ g_typelib_get_dir_entry_by_gtype (GITypelib *typelib,
   guint i;
   const char *c_prefix;
 
+  /* There is a corner case regarding GdkRectangle.  GdkRectangle is a
+     boxed type, but it is just an alias to boxed struct
+     CairoRectangleInt.  Scanner automatically converts all references
+     to GdkRectangle to CairoRectangleInt, so GdkRectangle does not
+     appear in the typelibs at all, although user code might query it.
+     So if we get such query, we also change it to lookup of
+     CairoRectangleInt.
+     https://bugzilla.gnome.org/show_bug.cgi?id=655423 */
+  if (!fastpass && !strcmp (gtype_name, "GdkRectangle"))
+    gtype_name = "CairoRectangleInt";
+
   /* Inside each typelib, we include the "C prefix" which acts as
    * a namespace mechanism.  For GtkTreeView, the C prefix is Gtk.
    * Given the assumption that GTypes for a library also use the