[gtksourceview] styleschemepreview: tweak gutter width and font sizing

[Christian Hergert <chergert src gnome org>]

commit 98bd7a3f4187f918548b16559ddf42af44d5442c
Author: Christian Hergert <chergert redhat com>
Date:   Tue Oct 12 11:42:11 2021 -0700

    styleschemepreview: tweak gutter width and font sizing
    
    This makes the fonts closer to the design, while avoiding the rendering
    artifacts that can come from various alignment issues. We also tweak the
    padding so that things align more closely to the designs.

 gtksourceview/gtksourcestyleschemepreview.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)
---
diff --git a/gtksourceview/gtksourcestyleschemepreview.c b/gtksourceview/gtksourcestyleschemepreview.c
index d0f6f528..92454b92 100644
--- a/gtksourceview/gtksourcestyleschemepreview.c
+++ b/gtksourceview/gtksourcestyleschemepreview.c
@@ -103,7 +103,18 @@ load_override_font (GtkSourceView *view)
 #endif
 
                css_provider = gtk_css_provider_new ();
-               gtk_css_provider_load_from_data (css_provider, "textview, textview text { font-family: 
BuilderBlocks; font-size: 4px; }", -1);
+               gtk_css_provider_load_from_data (css_provider, "\
+textview, textview text\n\
+{\n\
+  font-family: BuilderBlocks;\n\
+  font-size: 4px;\n\
+  line-height: 8px;\n\
+}\n\
+textview border.left gutter\n\
+{\n\
+  padding-left: 2px;\n\
+}\n\
+", -1);
 
                g_once_init_leave (&initialized, TRUE);
        }