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GtkTextHandle: Look up for the first child of a scrolled window found

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Text handles use to connect to the first GtkScrollable up the hierarchy
so they can be repositioned when scrolling. It makes more sense to look
up the first child of a GtkScrolledWindow, it must be an scrollable too,
and will be the scrollable that can actually change the position of the
text handles.

https://bugzilla.gnome.org/show_bug.cgi?id=761676
This commit is contained in:
Carlos Garnacho 2016-02-24 17:19:48 +01:00
parent ffea7a267d
commit 60d7f4376e
1 changed files with 17 additions and 2 deletions
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19
gtk/gtktexthandle.c
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@ -544,6 +544,21 @@ _gtk_text_handle_update_scrollable (GtkTextHandle *handle,
handle);
}
static GtkWidget *
gtk_text_handle_lookup_scrollable (GtkTextHandle *handle)
{
GtkTextHandlePrivate *priv;
GtkWidget *scrolled_window;
priv = handle->priv;
scrolled_window = gtk_widget_get_ancestor (priv->parent,
GTK_TYPE_SCROLLED_WINDOW);
if (!scrolled_window)
return NULL;
return gtk_bin_get_child (GTK_BIN (scrolled_window));
}
static void
_gtk_text_handle_parent_hierarchy_changed (GtkWidget *widget,
GtkWindow *previous_toplevel,
@ -574,7 +589,7 @@ _gtk_text_handle_parent_hierarchy_changed (GtkWidget *widget,
}
}
scrollable = gtk_widget_get_ancestor (widget, GTK_TYPE_SCROLLABLE);
scrollable = gtk_text_handle_lookup_scrollable (handle);
_gtk_text_handle_update_scrollable (handle, GTK_SCROLLABLE (scrollable));
}
@ -603,7 +618,7 @@ _gtk_text_handle_set_parent (GtkTextHandle *handle,
G_CALLBACK (_gtk_text_handle_parent_hierarchy_changed),
handle);
scrollable = gtk_widget_get_ancestor (parent, GTK_TYPE_SCROLLABLE);
scrollable = gtk_text_handle_lookup_scrollable (handle);
}
_gtk_text_handle_update_scrollable (handle, GTK_SCROLLABLE (scrollable));