ComboBox: add scroll indicators - 3942

- set the correct size for arrows in the dropdown menu

- remove border and background in the button that contains the arrows

- remove rule that was trying to make separators transparent but is
  not working

Signed-off-by: Manuel Quiñones <manuq@laptop.org>

1 files changed, 11 insertions, 3 deletions

diff --git a/gtk3/theme/gtk-widgets.css.em b/gtk3/theme/gtk-widgets.css.em
index bd5cbf4..15268ad 100644
--- a/gtk3/theme/gtk-widgets.css.em
+++ b/gtk3/theme/gtk-widgets.css.em
@@ -303,9 +303,17 @@ GtkComboBox {
     color: @white;
 }
 
-GtkComboBox .separator {
-    /* Remove the separator turning it transparent */
-    color: alpha(@theme_base_color, 0.0);
+GtkComboBox .menu.button {
+    border-color: transparent;
+    border-radius: 0px;
+    border-style: none;
+    background-color: transparent;
+    color: @white;
+}
+
+GtkComboBox .menu {
+    -GtkWidget-scroll-arrow-hlength: $(my_floor(2.5 * subcell_size));
+    -GtkWidget-scroll-arrow-vlength: $(my_floor(2.5 * subcell_size));
 }
 
 /* Notebooks */