[gtk] filechooserwidget: Stop using gtk_widget_get_allocat*

[Timm Bäder <baedert src gnome org>]

commit 83e9361005958f2b7822e1a7fa53745ba13af9f7
Author: Timm Bäder <tbaeder redhat com>
Date:   Mon Apr 29 11:46:54 2019 +0200

    filechooserwidget: Stop using gtk_widget_get_allocat*

 gtk/gtkfilechooserwidget.c | 21 ++++++++++++++++-----
 1 file changed, 16 insertions(+), 5 deletions(-)
---
diff --git a/gtk/gtkfilechooserwidget.c b/gtk/gtkfilechooserwidget.c
index aa9c3156bc..41d0d5eaa8 100644
--- a/gtk/gtkfilechooserwidget.c
+++ b/gtk/gtkfilechooserwidget.c
@@ -2221,7 +2221,12 @@ file_list_show_popover (GtkFileChooserWidget *impl,
   GtkTreeModel *model;
   GList *list;
   GtkTreePath *path;
+  graphene_rect_t bounds;
 
+  if (!gtk_widget_compute_bounds (priv->browse_files_tree_view,
+                                  priv->browse_files_tree_view,
+                                  &bounds))
+    return;
 
   file_list_update_popover (impl);
 
@@ -2234,7 +2239,7 @@ file_list_show_popover (GtkFileChooserWidget *impl,
       gtk_tree_view_convert_bin_window_to_widget_coords (GTK_TREE_VIEW (priv->browse_files_tree_view),
                                                      rect.x, rect.y, &rect.x, &rect.y);
 
-      rect.x = CLAMP (x - 20, 0, gtk_widget_get_allocated_width (priv->browse_files_tree_view) - 40);
+      rect.x = CLAMP (x - 20, 0, bounds.size.width - 40);
       rect.width = 40;
 
       g_list_free_full (list, (GDestroyNotify) gtk_tree_path_free);
@@ -2257,11 +2262,17 @@ list_popup_menu_cb (GtkWidget            *widget,
                     GtkFileChooserWidget *impl)
 {
   GtkFileChooserWidgetPrivate *priv = impl->priv;
+  graphene_rect_t bounds;
 
-  file_list_show_popover (impl,
-                          0.5 * gtk_widget_get_allocated_width (GTK_WIDGET (priv->browse_files_tree_view)),
-                          0.5 * gtk_widget_get_allocated_height (GTK_WIDGET (priv->browse_files_tree_view)));
-  return TRUE;
+  if (gtk_widget_compute_bounds (priv->browse_files_tree_view,
+                                 priv->browse_files_tree_view,
+                                 &bounds))
+    {
+      file_list_show_popover (impl, 0.5 * bounds.size.width, 0.5 * bounds.size.height);
+      return TRUE;
+    }
+
+  return FALSE;
 }
 
 /* Callback used when a button is pressed on the file list.  We trap button 3 to