From e8bb1f4a1844f07fc2f6973f2e7b400f2ddf2f3d Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Sun, 25 Dec 2016 12:03:06 +0100
Subject: Initial commit.

---
 utils.lua | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 utils.lua

(limited to 'utils.lua')

diff --git a/utils.lua b/utils.lua
new file mode 100644
index 0000000..1df9690
--- /dev/null
+++ b/utils.lua
@@ -0,0 +1,42 @@
+local M = {}
+
+local awful = require("awful")
+
+-- mapping from logical screen indices to indices corresponding to their
+-- physical layout
+local function map_screen_physical(n)
+    local function screen_cmp(s1, s2)
+        return s1[2].geometry.x < s2[2].geometry.x
+    end
+
+    local screens = {}
+    for s = 1, screen.count() do
+        screens[s] = {s, screen[s]}
+    end
+
+    table.sort(screens, screen_cmp)
+
+    if screens[n] ~= nil then
+        return screens[n][1]
+    end
+    return nil
+end
+
+local function screen_focus_physical(n)
+    local idx_logical = map_screen_physical(n)
+    if idx_logical then
+        awful.screen.focus(idx_logical)
+    end
+end
+
+function M.screen_focus_physical(n) screen_focus_physical(n) end
+
+-- audio control functions
+local function vol_control(n)
+    local cmd = string.format("amixer -q set Master %d%%", math.abs(n)) .. (n < 0 and "-" or "+")
+    awful.util.spawn(cmd)
+end
+
+function M.vol_control(n) vol_control(n) end
+
+return M
-- 
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