Add Blue Light Filter Widget

Author: VMatt013

bluelight-widget/README.md

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+
+# Blue Light Filter Widget
+
+This widget provides a simple way to toggle a blue light filter using [Redshift](https://github.com/jonls/redshift). It offers an easy mechanism to switch between day and night modes, reducing eye strain during late-night computer use.
+
+
+## Installation
+
+Clone this repository then add the widget to your wibar:
+
+```lua
+local bluelight_widget = require("awesome-wm-widgets.bluelight-widget")
+
+s.mytasklist, -- Middle widget
+    { -- Right widgets
+        layout = wibox.layout.fixed.horizontal,
+        ...
+        bluelight_widget, -- Add the widget here
+        ...
+    }
+```
+
+## Usage
+
+- Click the widget to toggle between **Day Mode** and **Night Mode**.
+  - **Day Mode:** Disables the blue light filter.
+  - **Night Mode:** Activates the blue light filter with a warm color temperature.
+
+## Customization
+
+You can customize the widget by modifying the following parameters in the widget's source file:
+
+| Name       | Default                                | Description                                                |
+|------------|----------------------------------------|------------------------------------------------------------|
+| `ICON_DIR` | ```awesome-wm-widgets/bluelight-widget/```  | Directory where the widget icons (sun.svg and moon.svg) are stored. |
+| `CMD`      | ```redshift```                            | Command to run Redshift.                                   |
+| `NIGHT_CMD`| ```-O 2500 -g 0.75```                     | Command options for activating Night Mode.                 |
+| `DAY_CMD`  | ```-x```                                  | Command options for activating Day Mode.                   |
+
+## Dependencies
+
+- [Redshift](https://github.com/jonls/redshift): Make sure Redshift is installed on your system.

bluelight-widget/init.lua

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+-------------------------------------------------
+-- Blue Light Filter Widget for Awesome Window Manager
+-- More details could be found here:
+-- https://github.com/streetturtle/awesome-wm-widgets/tree/master/bluelight-widget
+
+-- @author VMatt
+-- @copyright 2025 VMatt
+-------------------------------------------------
+
+local awful = require("awful")
+local wibox = require("wibox")
+local gfs = require("gears.filesystem")
+
+local ICON_DIR = gfs.get_configuration_dir() .. "awesome-wm-widgets/bluelight-widget/"
+local DAY_ICON = ICON_DIR .. "sun.svg"
+local NIGHT_ICON = ICON_DIR .. "moon.svg"
+
+local CMD = "redshift"
+local NIGHT_CMD = "-O 2500 -g 0.75"
+local DAY_CMD = "-x"
+local day = true
+
+local widget = wibox.widget({
+	{
+
+		{
+			id = "icon",
+			image = DAY_ICON,
+			resize = true,
+			widget = wibox.widget.imagebox,
+		},
+		layout = wibox.layout.fixed.horizontal,
+		widget = wibox.container.margin,
+	},
+	border_width = 5,
+	widget = wibox.container.background,
+	layout = wibox.layout.fixed.horizontal,
+})
+
+function widget:update()
+	local icon = self:get_children_by_id("icon")[1]
+	if day then
+		icon:set_image(DAY_ICON)
+	else
+		icon:set_image(NIGHT_ICON)
+	end
+end
+
+local function on_day()
+	awful.spawn(CMD .. " " .. DAY_CMD)
+	widget:update()
+end
+
+local function on_night()
+	awful.spawn(CMD .. " " .. NIGHT_CMD)
+	widget:update()
+end
+
+local function toggle()
+	day = not day
+	if day then
+		on_day()
+	else
+		on_night()
+	end
+end
+
+widget:buttons(awful.util.table.join(awful.button({}, 1, function()
+	toggle()
+end)))
+
+return widget