From ce1af8e6072464112e792829565d8b922122e265 Mon Sep 17 00:00:00 2001
From: Nuno Silva <nuno.m.ribeiro.silva@tecnico.ulisboa.pt>
Date: Thu, 15 Apr 2021 22:38:19 +0100
Subject: brightness-widget: support right click

toggles brightness between current level and 0
---
 brightness-widget/brightness.lua | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

(limited to 'brightness-widget')

diff --git a/brightness-widget/brightness.lua b/brightness-widget/brightness.lua
index 052c56b..f222adc 100644
--- a/brightness-widget/brightness.lua
+++ b/brightness-widget/brightness.lua
@@ -41,6 +41,7 @@ local function worker(user_args)
     local program = args.program or 'light'
     local step = args.step or 5
     local base = args.base or 20
+    local level = 0 -- current brightness value
     if program == 'light' then
         get_brightness_cmd = 'light -G'
         set_brightness_cmd = 'light -S ' -- <level>
@@ -108,16 +109,34 @@ local function worker(user_args)
 
     local update_widget = function(widget, stdout, _, _, _)
         local brightness_level = tonumber(string.format("%.0f", stdout))
+        level = brightness_level
         widget:set_value(brightness_level)
     end
 
     function brightness_widget:set(value)
+        level = value
         spawn.easy_async(set_brightness_cmd .. value, function()
             spawn.easy_async(get_brightness_cmd, function(out)
                 update_widget(brightness_widget.widget, out)
             end)
         end)
     end
+    local old_level = 0
+    function brightness_widget:toggle()
+        if old_level < 0.1 then
+            -- avoid toggling between '0' and 'almost 0'
+            old_level = 1
+        end
+        if level < 0.1 then
+            -- restore previous level
+            level = old_level
+        else
+            -- save current brightness for later
+            old_level = level
+            level = 0
+        end
+        brightness_widget:set(level)
+    end
     function brightness_widget:inc()
         spawn.easy_async(inc_brightness_cmd, function()
             spawn.easy_async(get_brightness_cmd, function(out)
@@ -136,6 +155,7 @@ local function worker(user_args)
     brightness_widget.widget:buttons(
             awful.util.table.join(
                     awful.button({}, 1, function() brightness_widget:set(base) end),
+                    awful.button({}, 3, function() brightness_widget:toggle() end),
                     awful.button({}, 4, function() brightness_widget:inc() end),
                     awful.button({}, 5, function() brightness_widget:dec() end)
             )
-- 
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