[gnome-builder] buildui: properly align tooltips to row

[Christian Hergert <chergert src gnome org>]

commit b8f87e856493425836683684c2c3b04bc978f9ad
Author: Diego Escalante Urrelo <diegoe gnome org>
Date:   Sat Jun 27 03:17:59 2020 -0500

    buildui: properly align tooltips to row
    
    Also cleanup `gbp_buildui_pane_diagnostic_tooltip()` so it mimics the
    pattern in `plugins/todo` and `libide/tree`.

 src/plugins/buildui/gbp-buildui-pane.c | 32 ++++++++++++++++++++------------
 1 file changed, 20 insertions(+), 12 deletions(-)
---
diff --git a/src/plugins/buildui/gbp-buildui-pane.c b/src/plugins/buildui/gbp-buildui-pane.c
index cca38ec21..9bd033480 100644
--- a/src/plugins/buildui/gbp-buildui-pane.c
+++ b/src/plugins/buildui/gbp-buildui-pane.c
@@ -438,29 +438,37 @@ gbp_buildui_pane_diagnostic_tooltip (GbpBuilduiPane *self,
                                      GtkTooltip     *tooltip,
                                      GtkTreeView    *tree_view)
 {
+  g_autoptr(GtkTreePath) path = NULL;
   GtkTreeModel *model = NULL;
-  GtkTreeIter iter;
 
   g_assert (GBP_IS_BUILDUI_PANE (self));
   g_assert (GTK_IS_TOOLTIP (tooltip));
   g_assert (GTK_IS_TREE_VIEW (tree_view));
 
-  if (gtk_tree_view_get_tooltip_context (tree_view, &x, &y, keyboard_mode, &model, NULL, &iter))
-    {
-      g_autoptr(IdeDiagnostic) diag = NULL;
+  if (NULL == (model = gtk_tree_view_get_model (tree_view)))
+    return FALSE;
 
-      gtk_tree_model_get (model, &iter,
-                          COLUMN_DIAGNOSTIC, &diag,
-                          -1);
+  if (gtk_tree_view_get_path_at_pos (tree_view, x, y, &path, NULL, NULL, NULL))
+    {
+      GtkTreeIter iter;
 
-      if (diag != NULL)
+      if (gtk_tree_model_get_iter (model, &iter, path))
         {
-          g_autofree gchar *text = ide_diagnostic_get_text_for_display (diag);
+         g_autoptr(IdeDiagnostic) diag = NULL;
 
-          gtk_tooltip_set_text (tooltip, text);
+         gtk_tree_model_get (model, &iter,
+                             COLUMN_DIAGNOSTIC, &diag,
+                             -1);
 
-          return TRUE;
-        }
+         if (diag != NULL)
+           {
+             g_autofree gchar *text = ide_diagnostic_get_text_for_display (diag);
+
+             gtk_tree_view_set_tooltip_row (tree_view, tooltip, path);
+             gtk_tooltip_set_text (tooltip, text);
+             return TRUE;
+           }
+       }
     }
 
   return FALSE;