[gtk+] a11y/entry: Fix text coords not adjusted for alloc

[Daniel Boles <dboles src gnome org>]

commit 9af088693a5087a4d82fe14305d67444755b0fcc
Author: Samuel Thibault <samuel thibault ens-lyon org>
Date:   Thu Oct 5 15:49:00 2017 +0000

    a11y/entry: Fix text coords not adjusted for alloc
    
    What is missing is the "allocation" part of x/y coordinates. Since
    gtk_entry_realize doesn't call gtk_widget_set_window(priv->text_area),
    the coordinates returned by gdk_window_get_origin don't include it.
    
    This patch fixes this.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=784509

 gtk/a11y/gtkentryaccessible.c |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)
---
diff --git a/gtk/a11y/gtkentryaccessible.c b/gtk/a11y/gtkentryaccessible.c
index abbaef8..9519b09 100644
--- a/gtk/a11y/gtkentryaccessible.c
+++ b/gtk/a11y/gtkentryaccessible.c
@@ -971,11 +971,14 @@ gtk_entry_accessible_get_character_extents (AtkText      *text,
   pango_layout_index_to_pos (gtk_entry_get_layout (entry), index, &char_rect);
   pango_extents_to_pixels (&char_rect, NULL);
 
+  GtkAllocation allocation;
+  gtk_widget_get_allocation (widget, &allocation);
+
   window = gtk_widget_get_window (widget);
   gdk_window_get_origin (window, &x_window, &y_window);
 
-  *x = x_window + x_layout + char_rect.x;
-  *y = y_window + y_layout + char_rect.y;
+  *x = x_window + allocation.x + x_layout + char_rect.x;
+  *y = y_window + allocation.y + y_layout + char_rect.y;
   *width = char_rect.width;
   *height = char_rect.height;