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Updated cpu (markdown)
[etc/awesome.git] / alsabar.md
1 [<- widgets](https://github.com/copycat-killer/lain/wiki/Widgets)
2
3 Shows and controls alsa volume with a progressbar.
4
5 Dependencies:
6
7 - alsa-utils (of course)
8
9 Plus tooltips, notifications, and color changes at mute/unmute switch.
10
11         myvolumebar = lain.widgets.alsabar()
12
13 * Left click: Launch `alsamixer` in your `terminal`.
14 * Right click: Mute/unmute.
15 * Scroll wheel: Increase/decrase volume.
16
17 The function takes a table as optional argument, which can contain:
18
19 Variable | Meaning | Type | Default
20 --- | --- | --- | ---
21 `width` | Bar width | int | 63
22 `height` | Bar height | int | 1
23 `ticks` | Set bar ticks on | boolean | true
24 `ticks_size` | Ticks size | int | 7
25 `vertical` | Set the bar vertical | boolean | false
26 `channel` | Mixer channel | string | "Master" 
27 `step` | Step at which volume is increased/decreased | string | "5%"
28 `colors` | Bar colors | table | see **colors**
29 `notifications` | Notifications settings | table | see **notifications**
30
31 ### colors
32
33 Variable | Meaning | Type | Default
34 --- | --- | --- | ---
35 `background` | Bar backgrund color | string | `beautiful.bg_normal`
36 `mute` | Bar mute color | string | "#EB8F8F"
37 `unmute` | Bar unmute color | string | "#A4CE8A"
38
39 ### notifications
40
41 Variable | Meaning | Type | Default
42 --- | --- | --- | ---
43 `font` | Notifications font | string | The one defined in `beautiful.font`
44 `font_size` | Notifications font size | string | "11"
45 `bar_size` | Wibox height | int | 18
46
47 It's **crucial** to set `notifications.bar_size` to your `mywibox[s]` height,
48 **if** you have set it different than default (18). 
49
50 `lain.widgets.alsabar` outputs the following table:
51
52 Variable | Meaning | Type
53 --- | --- | ---
54 `widget` | The widget | `awful.widget.progressbar`
55 `channel` | Alsa channel | string
56 `step` | Increase/decrease step | string
57 `notify` | The notification | function
58
59 Finally, you can control the widget with key bindings like these:
60
61     -- Volume control
62     awful.key({ altkey }, "Up",
63     function ()
64         awful.util.spawn("amixer sset " .. volume.channel .. " " .. volume.step .. "+")
65         volume.notify()
66     end),
67     awful.key({ altkey }, "Down",
68     function ()
69         awful.util.spawn("amixer sset " .. volume.channel .. " " .. volume.step .. "-")
70         volume.notify()
71     end),
72     awful.key({ altkey }, "m",
73     function ()
74         awful.util.spawn("amixer set Master playback toggle")
75         volume.notify()
76     end),
77     awful.key({ altkey, "Control" }, "m", 
78     function ()
79         awful.util.spawn("amixer set Master playback 100%", false )
80         volume.notify()
81     end),
82
83 where `altkey = "Mod1"`.