Systray: Configure background color via beautiful

Signed-off-by: Uli Schlachter <psychon@znc.in>

lib/wibox/widget/systray.lua.in

@@ -6,6 +6,7 @@
 
 local wbase = require("wibox.widget.base")
 local lbase = require("wibox.layout.base")
+local beautiful = require("beautiful")
 local capi = { awesome = awesome }
 local setmetatable = setmetatable
 local error = error
@@ -19,6 +20,7 @@ local base_size = nil
 function draw(box, wibox, cr, width, height)
     local x, y, width, height = lbase.rect_to_device_geometry(cr, 0, 0, width, height)
     local num_entries = capi.awesome.systray()
+    local bg = beautiful.bg_systray or beautiful.bg_normal
 
     local in_dir, ortho, base
     if horizontal then
@@ -31,7 +33,7 @@ function draw(box, wibox, cr, width, height)
     else
         base = in_dir / num_entries
     end
-    capi.awesome.systray(wibox.drawin, x, y, base, horizontal)
+    capi.awesome.systray(wibox.drawin, x, y, base, horizontal, bg)
 end
 
 function fit(box, width, height)

systray.c

@@ -321,11 +321,22 @@ luaA_systray(lua_State *L)
 {
     if(lua_gettop(L) != 0)
     {
+        size_t bg_len;
         drawin_t *w = luaA_checkudata(L, 1, &drawin_class);
         int x = luaL_checknumber(L, 2);
         int y = luaL_checknumber(L, 3);
         int base_size = luaL_checknumber(L, 4);
         bool horiz = lua_toboolean(L, 5);
+        const char *bg = luaL_checklstring(L, 6, &bg_len);
+        color_t bg_color;
+
+        if(color_init_reply(color_init_unchecked(&bg_color, bg, bg_len)))
+        {
+            uint32_t config_back[] = { bg_color.pixel };
+            xcb_change_window_attributes(globalconf.connection,
+                                         globalconf.systray.window,
+                                         XCB_CW_BACK_PIXEL, config_back);
+        }
 
         if(globalconf.systray.parent == NULL)
             systray_register();

themes/default/theme.lua.in

@@ -10,6 +10,7 @@ theme.bg_normal     = "#222222"
 theme.bg_focus      = "#535d6c"
 theme.bg_urgent     = "#ff0000"
 theme.bg_minimize   = "#444444"
+theme.bg_systray    = theme.bg_normal
 
 theme.fg_normal     = "#aaaaaa"
 theme.fg_focus      = "#ffffff"

themes/sky/theme.lua.in

@@ -12,6 +12,7 @@ theme.bg_focus      = "#e2eeea"
 theme.bg_normal     = "#729fcf"
 theme.bg_urgent     = "#fce94f"
 theme.bg_minimize   = "#0067ce"
+theme.bg_systray    = theme.bg_normal
 
 theme.fg_normal     = "#2e3436"
 theme.fg_focus      = "#2e3436"

themes/zenburn/theme.lua.in

@@ -21,6 +21,7 @@ theme.fg_urgent = "#CC9393"
 theme.bg_normal  = "#3F3F3F"
 theme.bg_focus   = "#1E2320"
 theme.bg_urgent  = "#3F3F3F"
+theme.bg_systray = theme.bg_normal
 -- }}}
 
 -- {{{ Borders