Touch Barのカスタマイズ：制御スクリプトと設定ファイルの適用手順
T2 Mac上でLinuxを動かす際、デフォルトではTouch Barが固定表示になりがちです。これを「Fnキー（Caps Lock等）」で動的に切り替え可能にするための、実践的な設定手順をまとめます。
ステップ1：表示レイアウトの定義 (/etc/tiny-dfr/config.toml)
tiny-dfr は、Touch Barの表示内容を司るデーモンです。まずは、システム標準のテンプレートをユーザー設定ディレクトリにコピーして編集します。
１. 設定ディレクトリの作成とコピー
既製品（/usr/share）を、特注品置き場（/etc）へコピーします。
sudo mkdir -p /etc/tiny-dfr
sudo cp /usr/share/tiny-dfr/config.toml /etc/tiny-dfr/config.toml
２. 設定ファイルの編集
コピーしたファイルを sudo nano /etc/tiny-dfr/config.toml で開き、自分好みに書き換えます。
/etc/tiny-dfr/config.toml
# tiny-dfr config template. Do not edit this file directly, instead
# copy it to /etc/tiny-dfr/config.toml and edit that copy.
# The daemon will merge those two files, giving preference to the one in /etc
# F{number} keys are shown when Fn is not pressed by default.
# Set this to true if you want the media keys to be shown without Fn pressed
MediaLayerDefault = false
# Set this to false if you want to hide the button outline,
# leaving only the text/logo
#ShowButtonOutlines = true
# Set this to true to slowly shift the entire screen contents.
# In theory this helps with screen longevity, but macos does not bother doing it
# Disabling ShowButtonOutlines will make this effect less noticeable to the eye
#EnablePixelShift = false
# Set this to the fontconfig pattern to be used to pick a font for text labels
# Some examples are:
# "" - default regular sans-serif font
# ":bold" - default bold sans-serif font
# For full reference on accepted values see the fontconfig user guide,
# section "Font Names"
# https://www.freedesktop.org/software/fontconfig/fontconfig-user.html
#FontTemplate = ":bold"
# Set this to false if you want the brightness of the touchbar
# to be set to a static value instead of following the primary
# screen's brightness
#AdaptiveBrightness = true
# With adaptive brightness disabled this is used as the brightness
# in the active state
# With it enabled, this is the maximum point on the brightness curve
# Accepted values are 0-255
#ActiveBrightness = 128
# This key defines the contents of the primary layer
# (the one with F{number} keys)
# You can change the individual buttons, add, or remove them
# Any number of keys that is greater than 0 is allowed
# however rendering will start to break around 24 keys
# Buttons can be made larger by setting the optional Stretch field
# to a number greater than 1 (which means the button will take up
# that many button spaces).
PrimaryLayerKeys = [
# Action defines the key code to send when the button is pressed
# Text defines the button label
# Icon specifies the icon to be used for the button.
# Theme specifies the XDG icons theme.
# Stretch specifies how many button spaces the button should take up
# and defaults to 1
# Icons can either be svgs or pngs, with svgs being preferred
# For best results with pngs, they should be 48x48
# Do not include the extension in the file name.
# If a Theme is set, icons are looked up in XDG_DATA_DIRS.
# Otherwise, they are first looked up in /etc/tiny-dfr, and then in /usr/share/tiny-dfr.
# Time can be either 24hr, or 12hr. Locale is optional and will default to POSIX.
# Only one of Text, Icon or Time is allowed,
# if both are present, the behavior is undefined.
# For the list of supported key codes see
# https://docs.rs/input-linux/latest/input_linux/enum.Key.html
# Note that the escape key is not specified here, as it is added
# automatically on Macs without a physical one
{ Text = "F1", Action = "F1" },
{ Text = "F2", Action = "F2" },
{ Text = "F3", Action = "F3" },
{ Text = "F4", Action = "F4" },
{ Text = "F5", Action = "F5" },
{ Text = "F6", Action = "F6" },
{ Text = "F7", Action = "F7" },
{ Text = "F8", Action = "F8" },
{ Text = "F9", Action = "F9" },
{ Text = "F10", Action = "F10" },
{ Text = "F11", Action = "F11" },
{ Text = "F12", Action = "F12" }
# Example with Stretch:
# # because most buttons have stretch 2, they behave as if they all had 1:
# { Text = "F1", Action = "F1", Stretch = 2 },
# { Text = "F2", Action = "F2", Stretch = 2 },
# # these two buttons are half the size of the other buttons:
# { Text = "F3", Action = "F3", Stretch = 1 },
# { Text = "F4", Action = "F4", Stretch = 1 },
# { Text = "F5", Action = "F5", Stretch = 2 },
# { Text = "F6", Action = "F6", Stretch = 2 },
# { Text = "F7", Action = "F7", Stretch = 2 },
# # these two buttons are one and a half the size of the other buttons:
# { Text = "F8", Action = "F8", Stretch = 3 },
# { Text = "F9", Action = "F9", Stretch = 3 },
# { Text = "F10", Action = "F10", Stretch = 2 },
# { Text = "F11", Action = "F11", Stretch = 2 },
# { Text = "F12", Action = "F12", Stretch = 2 }
# Example of Time:
# { Time = "12hr", Action = "Time"},
# Example of Time with locale:
# { Time = "12hr", Locale = "en_IN", Action = "Time"},
# Example of Time with stretch:
# # the time key by default will be 3 times wider than the rest keys.
# # So the stretch value assigned will be 3 times the regular keys.
# { Time = "12hr", Action = "Time", Stretch = 2},
# # Here, time key will be 3x2=6 times the normal keys.
]
# This key defines the contents of the media key layer
MediaLayerKeys = [
{ Icon = "brightness_low", Action = "BrightnessDown" },
{ Icon = "brightness_high", Action = "BrightnessUp" },
{ Icon = "mic_off", Action = "MicMute" },
{ Icon = "search", Action = "Search" },
{ Icon = "backlight_low", Action = "IllumDown" },
{ Icon = "backlight_high", Action = "IllumUp" },
{ Icon = "fast_rewind", Action = "PreviousSong" },
{ Icon = "play_pause", Action = "PlayPause" },
{ Icon = "fast_forward", Action = "NextSong" },
{ Icon = "volume_off", Action = "Mute" },
{ Icon = "volume_down", Action = "VolumeDown" },
{ Icon = "volume_up", Action = "VolumeUp" }
# Example with XDG icons (requires `breeze-dark` theme installed):
# { Icon = "brightness-low", Theme = "breeze-dark", Action = "BrightnessDown" },
# { Icon = "brightness-high", Theme = "breeze-dark", Action = "BrightnessUp" },
# { Icon = "microphone", Theme = "breeze-dark", Action = "MicMute" },
# { Icon = "search", Theme = "breeze-dark", Action = "Search" },
# { Icon = "redshift-status-day", Theme = "breeze-dark", Action = "IllumDown" },
# { Icon = "redshift-status-on", Theme = "breeze-dark", Action = "IllumUp" },
# { Icon = "media-skip-backward", Theme = "breeze-dark", Action = "PreviousSong" },
# { Icon = "media-playback-start", Theme = "breeze-dark", Action = "PlayPause" },
# { Icon = "media-skip-forward", Theme = "breeze-dark", Action = "NextSong" },
# { Icon = "audio-volume-muted", Theme = "breeze-dark", Action = "Mute" },
# { Icon = "audio-volume-low", Theme = "breeze-dark", Action = "VolumeDown" },
# { Icon = "audio-volume-high", Theme = "breeze-dark", Action = "VolumeUp" }
]
３. 反映テスト
設定を読み込ませるため、デーモンを再起動します。
sudo systemctl restart tiny-dfr
ステップ2：切り替えスクリプトの作成 (/usr/local/bin/fn_toggle-touchbar)
次に、特定のキー入力をトリガーにして表示モードを切り替えるロジックを作成します。
１. スクリプトファイルの作成
.bash
sudo nano /usr/local/bin/fn_toggle-touchbar
./usr/local/bin/fn_toggle-touchbar
#!/bin/bash
CONFIG="/etc/tiny-dfr/config.toml"
# MediaLayerDefault の行を探して true か false かで分岐
if grep -q "MediaLayerDefault = true" "$CONFIG"; then
sudo sed -i 's/MediaLayerDefault = true/MediaLayerDefault = false/' "$CONFIG"
echo "F-Key Mode"
else
sudo sed -i 's/MediaLayerDefault = false/MediaLayerDefault = true/' "$CONFIG"
echo "Media Mode"
fi
# tiny-dfrを再起動して反映
#sudo systemctl restart tiny-dfr
# restartがいらないことがわかった（config.tomlを書き換えるだけで切り替わる）
２. 実行権限の付与
一度 chmod +x を行えば、以降中身を書き換えても権限は維持されます。
sudo chmod +x /usr/local/bin/fn_toggle-touchbar
ステップ3：キーイベントとの紐付け (keyd等の設定)
作成したスクリプトを実際のキー操作に割り当てます。
設定例 (/etc/keyd/default.conf 等):
.例１
[main]
capslock = timeout(capslock, 200, layer(fn))
[fn]
# 例：Fnキー（Caps Lock）と組み合わせてスクリプトを実行
f1 = command(/usr/local/bin/fn_toggle-touchbar)
.例２
[main]
capslock = command(/usr/local/bin/fn_toggle-touchbar)
まとめ：なぜこの手順なのか？
-
/usr/share/からのコピー: ツールが期待する最新のデフォルト設定をベースにできるため、記述ミスを防げます。 -
/etc/での編集: システムアップデート時に設定が上書きされるのを防ぎ、自分のカスタムを最優先させます。