[gtk] textview: Paint border windows in the right spot

[Benjamin Otte <otte src gnome org>]

commit d10a73f5093066753b13e08593bf01cc44bbdf72
Author: Benjamin Otte <otte redhat com>
Date:   Fri Mar 29 04:00:59 2019 +0100

    textview: Paint border windows in the right spot
    
    Fixes textview-border-windows reftest

 gtk/gtktextview.c | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtktextview.c b/gtk/gtktextview.c
index 6da0b597e9..0f378211e8 100644
--- a/gtk/gtktextview.c
+++ b/gtk/gtktextview.c
@@ -637,6 +637,8 @@ static void           text_window_size_allocate   (GtkTextWindow     *win,
                                                    GdkRectangle      *rect);
 static void           text_window_invalidate      (GtkTextWindow     *win);
 
+static gint           text_window_get_x           (GtkTextWindow     *win);
+static gint           text_window_get_y           (GtkTextWindow     *win);
 static gint           text_window_get_width       (GtkTextWindow     *win);
 static gint           text_window_get_height      (GtkTextWindow     *win);
 
@@ -5398,17 +5400,19 @@ paint_border_window (GtkTextView     *text_view,
                      GtkTextWindow   *text_window,
                      GtkStyleContext *context)
 {
-  gint w, h;
+  gint x, y, w, h;
 
   if (text_window == NULL)
     return;
 
+  x = text_window_get_x (text_window);
+  y = text_window_get_y (text_window);
   w = text_window_get_width (text_window);
   h = text_window_get_height (text_window);
 
   gtk_style_context_save_to_node (context, text_window->css_node);
 
-  gtk_snapshot_render_background (snapshot, context, 0, 0, w, h);
+  gtk_snapshot_render_background (snapshot, context, x, y, w, h);
 
   gtk_style_context_restore (context);
 }
@@ -8981,6 +8985,18 @@ text_window_invalidate (GtkTextWindow *win)
   gtk_widget_queue_draw (win->widget);
 }
 
+static gint
+text_window_get_x (GtkTextWindow *win)
+{
+  return win->allocation.x;
+}
+
+static gint
+text_window_get_y (GtkTextWindow *win)
+{
+  return win->allocation.y;
+}
+
 static gint
 text_window_get_width (GtkTextWindow *win)
 {