[experiments] the volume widget

experiments/volume/utils.lua

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+
+local json = require("json")
+
+local utils = {}
+
+local function split(string_to_split, separator)
+    if separator == nil then separator = "%s" end
+    local t = {}
+
+    for str in string.gmatch(string_to_split, "([^".. separator .."]+)") do
+        table.insert(t, str)
+    end
+
+    return t
+end
+
+function utils.extract_sinks_and_sources(pacmd_output)
+    local sinks = {}
+    local sources = {}
+    local device
+    local properties
+    local ports
+    local in_sink = false
+    local in_source = false
+    local in_device = false
+    local in_properties = false
+    local in_ports = false
+    for line in pacmd_output:gmatch("[^\r\n]+") do
+        if string.match(line, 'source%(s%) available.') then
+            in_sink = false
+            in_source = true
+        end
+        if string.match(line, 'sink%(s%) available.') then
+            in_sink = true
+            in_source = false
+        end
+
+        if string.match(line, 'index:') then
+            in_device = true
+            in_properties = false
+            device = {
+                id = line:match(': (%d+)'),
+                is_default = string.match(line, '*') ~= nil
+            }
+            if in_sink then
+                table.insert(sinks, device)
+            elseif in_source then
+                table.insert(sources, device)
+            end
+        end
+
+        if string.match(line, '^\tproperties:') then
+            in_device = false
+            in_properties = true
+            properties = {}
+            device['properties'] = properties
+        end
+
+        if string.match(line, 'ports:') then
+            in_device = false
+            in_properties = false
+            in_ports = true
+            ports = {}
+            device['ports'] = ports
+        end
+
+        if string.match(line, 'active port:') then
+            in_device = false
+            in_properties = false
+            in_ports = false
+            device['active_port'] = line:match(': (.+)'):gsub('<',''):gsub('>','')
+        end
+
+        if in_device then
+            local t = split(line, ': ')
+            local key = t[1]:gsub('\t+', ''):lower()
+            local value = t[2]:gsub('^<', ''):gsub('>$', '')
+            device[key] = value
+        end
+
+        if in_properties then
+            local t = split(line, '=')
+            local key = t[1]:gsub('\t+', ''):gsub('%.', '_'):gsub('-', '_'):gsub(':', ''):gsub("%s+$", "")
+            local value
+            if t[2] == nil then
+                value = t[2]
+            else
+                value = t[2]:gsub('"', ''):gsub("^%s+", ""):gsub(' Analog Stereo', '')
+            end
+            properties[key] = value
+        end
+
+        if in_ports then
+            local t = split(line, ': ')
+            local key = t[1]
+            if key ~= nil then
+                key = key:gsub('\t+', '')
+            end
+            ports[key] = t[2]
+        end
+    end
+    print(json.encode(sources))
+
+    return sinks, sources
+end
+
+return utils

experiments/volume/volume-2.svg

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+<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="#ffffff" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-volume-2"><polygon points="11 5 6 9 2 9 2 15 6 15 11 19 11 5"></polygon><path d="M19.07 4.93a10 10 0 0 1 0 14.14M15.54 8.46a5 5 0 0 1 0 7.07"></path></svg>

experiments/volume/volume.lua

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+-------------------------------------------------
+-- The Ultimate Volume Widget for Awesome Window Manager
+-- More details could be found here:
+-- https://github.com/streetturtle/awesome-wm-widgets/tree/master/volume-widget
+
+-- @author Pavel Makhov
+-- @copyright 2020 Pavel Makhov
+-------------------------------------------------
+
+local awful = require("awful")
+local wibox = require("wibox")
+local spawn = require("awful.spawn")
+local gears = require("gears")
+local beautiful = require("beautiful")
+local utils = require("awesome-wm-widgets.experiments.volume.utils")
+
+
+local HOME_DIR = os.getenv("HOME")
+local WIDGET_DIR = HOME_DIR .. '/.config/awesome/awesome-wm-widgets/experiments/volume'
+local LIST_DEVICES_CMD = [[sh -c "pacmd list-sinks; pacmd list-sources"]]
+
+
+local rows  = { layout = wibox.layout.fixed.vertical }
+local volume_widget = wibox.widget {
+    {
+        {
+            id = "icon",
+            image = WIDGET_DIR .. '/volume-2.svg',
+            widget = wibox.widget.imagebox
+        },
+        id = "margin",
+        margins = 4,
+        layout = wibox.container.margin
+    },
+    {
+        id = "txt",
+        widget = wibox.widget.textbox
+    },
+    layout = wibox.layout.fixed.horizontal,
+    set_text = function(self, new_value)
+        self.txt.text = new_value
+    end,
+    set_icon = function(self, new_value)
+        self.margin.icon.image = new_value
+    end
+}
+
+
+local popup = awful.popup{
+    bg = beautiful.bg_normal,
+    ontop = true,
+    visible = false,
+    shape = gears.shape.rounded_rect,
+    border_width = 1,
+    border_color = beautiful.bg_focus,
+    maximum_width = 400,
+    offset = { y = 5 },
+    widget = {}
+}
+
+local function build_main_line(device)
+    if device.active_port ~= nil and device.ports[device.active_port] ~= nil then
+        return device.properties.device_description .. ' - ' .. device.ports[device.active_port]
+    else
+        return device.properties.device_description
+    end
+end
+
+local function build_rows(devices, on_checkbox_click, device_type)
+    local device_rows  = { layout = wibox.layout.fixed.vertical }
+    for _, device in pairs(devices) do
+
+        local checkbox = wibox.widget {
+            checked       = device.is_default,
+            color         = beautiful.bg_normal,
+            paddings      = 2,
+            shape         = gears.shape.circle,
+            forced_width = 20,
+            forced_height = 20,
+            check_color = beautiful.fg_urgent,
+            widget        = wibox.widget.checkbox
+        }
+
+        checkbox:connect_signal("button::press", function(c)
+            print(string.format([[sh -c 'pacmd set-default-%s "%s"']], device_type, device.name))
+            spawn.easy_async(string.format([[sh -c 'pacmd set-default-%s "%s"']], device_type, device.name), function()
+                on_checkbox_click()
+            end)
+        end)
+
+        local row = wibox.widget {
+            {
+                {
+                    {
+                        checkbox,
+                        valign = 'center',
+                        layout = wibox.container.place,
+                    },
+                    {
+                        {
+                            text = build_main_line(device),
+                            align = 'left',
+                            widget = wibox.widget.textbox
+                        },
+                        left = 10,
+                        layout = wibox.container.margin
+                    },
+                    spacing = 8,
+                    layout = wibox.layout.align.horizontal
+                },
+                margins = 8,
+                layout = wibox.container.margin
+            },
+            bg = beautiful.bg_normal,
+            widget = wibox.container.background
+        }
+
+        table.insert(device_rows, row)
+    end
+
+    return device_rows
+end
+
+local function build_header_row(text)
+    return wibox.widget{
+        {
+            markup = "<b>" .. text .. "</b>",
+            align = 'center',
+            widget = wibox.widget.textbox
+        },
+        bg = beautiful.bg_normal,
+        widget = wibox.container.background
+    }
+end
+
+local function rebuild_popup()
+    spawn.easy_async(LIST_DEVICES_CMD, function(stdout)
+
+        local sinks, sources = utils.extract_sinks_and_sources(stdout)
+
+        for i = 0, #rows do rows[i]=nil end
+
+        table.insert(rows, build_header_row("SINKS"))
+        table.insert(rows, build_rows(sinks, function() rebuild_popup() end, "sink"))
+        table.insert(rows, build_header_row("SOURCES"))
+        table.insert(rows, build_rows(sources, function() rebuild_popup() end, "source"))
+
+        popup:setup(rows)
+    end)
+
+end
+
+
+local function worker(args)
+
+    volume_widget:buttons(
+            awful.util.table.join(
+                    awful.button({}, 1, function()
+                        if popup.visible then
+                            popup.visible = not popup.visible
+                        else
+                            rebuild_popup()
+                            popup:move_next_to(mouse.current_widget_geometry)
+                        end
+                    end)
+            )
+    )
+
+    return volume_widget
+end
+
+return setmetatable(volume_widget, { __call = function(_, ...) return worker(...) end })