[gnome-builder/wip/gtk4-port: 437/736] libide/sourceview: short-circuit if no classes are set

[Christian Hergert <chergert src gnome org>]

commit 48bcb8617915414da0e622581b16d4cb1c0232f1
Author: Christian Hergert <chergert redhat com>
Date:   Wed Apr 6 14:07:50 2022 -0700

    libide/sourceview: short-circuit if no classes are set
    
    This just helps reduce how many quark queries we make during the line
    snapshot.

 src/libide/sourceview/ide-line-change-gutter-renderer.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)
---
diff --git a/src/libide/sourceview/ide-line-change-gutter-renderer.c 
b/src/libide/sourceview/ide-line-change-gutter-renderer.c
index 675682ee9..fe20cb61f 100644
--- a/src/libide/sourceview/ide-line-change-gutter-renderer.c
+++ b/src/libide/sourceview/ide-line-change-gutter-renderer.c
@@ -244,13 +244,20 @@ ide_line_change_gutter_renderer_snapshot_line (GtkSourceGutterRenderer *renderer
                                                guint                    line)
 {
   IdeLineChangeGutterRenderer *self = (IdeLineChangeGutterRenderer *)renderer;
-  gboolean is_add = gtk_source_gutter_lines_has_qclass (lines, line, added_quark);
-  gboolean is_change = gtk_source_gutter_lines_has_qclass (lines, line, changed_quark);
-  gboolean is_delete = gtk_source_gutter_lines_has_qclass (lines, line, deleted_quark);
+  gboolean is_add;
+  gboolean is_change;
+  gboolean is_delete;
   int line_y;
   int line_height;
   int width;
 
+  if (!gtk_source_gutter_lines_has_any_class (lines, line))
+    return;
+
+  is_add = gtk_source_gutter_lines_has_qclass (lines, line, added_quark);
+  is_change = gtk_source_gutter_lines_has_qclass (lines, line, changed_quark);
+  is_delete = gtk_source_gutter_lines_has_qclass (lines, line, deleted_quark);
+
   if (!is_add && !is_change && !is_delete)
     return;