MainWindow: respect reduce transparency key (#333)

Author: danirabbit

data/Application.css

@@ -4,19 +4,24 @@
  */
 
 dock {
-    background: alpha(@bg_color, 0.6);
+    background: @bg_color;
     border-radius: 9px;
     box-shadow:
-        inset 0 -1px 0 0 alpha(@highlight_color, 0.1),
-        inset 0 1px 0 0 alpha(@highlight_color, 0.15),
-        inset 1px 0 0 0 alpha(@highlight_color, 0.035),
-        inset -1px 0 0 0 alpha(@highlight_color, 0.035),
-        0 0 0 1px alpha(@borders, 0.4),
-        0 1px 3px alpha(black, 0.10),
-        0 3px 9px alpha(black, 0.15);
+        inset 0 -1px 0 0 alpha(@highlight_color, 0.2),
+        inset 0 1px 0 0 alpha(@highlight_color, 0.3),
+        inset 1px 0 0 0 alpha(@highlight_color, 0.07),
+        inset -1px 0 0 0 alpha(@highlight_color, 0.07),
+        0 0 0 1px @borders,
+        0 1px 3px alpha(black, 0.2),
+        0 3px 9px alpha(black, 0.3);
+    opacity: 0.6;
     padding: 9px;
 }
 
+dock.reduce-transparency {
+    opacity: 1;
+}
+
 dock-window {
     margin-top: 64px; /* Keep enough room so that icons don't clip when bouncing */
 }

data/dock.metainfo.xml.in

@@ -32,6 +32,7 @@
         <issue url="https://github.com/elementary/dock/issues/275">app bounce clips app icon</issue>
         <issue url="https://github.com/elementary/dock/issues/317">Multitasking view bouncing continues for far too long</issue>
         <issue url="https://github.com/elementary/dock/issues/321">The dots of active apps on the dock sometimes appear touching the icons without proper spacing</issue>
+        <issue url="https://github.com/elementary/dock/issues/331">Respect Reduce Transparency setting</issue>
       </issues>
     </release>
 

src/MainWindow.vala

@@ -5,9 +5,29 @@
 
 public class Dock.MainWindow : Gtk.ApplicationWindow {
     private class Container : Gtk.Box {
+        private Settings transparency_settings;
+
         class construct {
             set_css_name ("dock");
         }
+
+        construct {
+            var transparency_schema = SettingsSchemaSource.get_default ().lookup ("io.elementary.desktop.wingpanel", true);
+            if (transparency_schema != null && transparency_schema.has_key ("use-transparency")) {
+                transparency_settings = new Settings ("io.elementary.desktop.wingpanel");
+                transparency_settings.changed["use-transparency"].connect (update_transparency);
+                update_transparency ();
+            }
+        }
+
+        private void update_transparency () {
+            if (transparency_settings.get_boolean ("use-transparency")) {
+                remove_css_class ("reduce-transparency");
+            } else {
+                add_css_class ("reduce-transparency");
+
+            }
+        }
     }
 
     private class BottomMargin : Gtk.Widget {