alan
401b46c886
Rules watch every notification for words and apps and answer with an effect: nudge, flash, banner, airplane, confetti, blink, sound, focus, or a command. Silenced notifications that match a rule are let through. Settings popup behind a bar bell, rules kept in one JSON file.
91 lines
3.4 KiB
Bash
Executable File
91 lines
3.4 KiB
Bash
Executable File
#!/usr/bin/env bash
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#
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# The MSN Messenger nudge: the whole screen shakes for a moment.
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#
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# Done with a Hyprland screen shader that moves the whole picture to a new
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# random offset `speed` times a second, applied for `duration` seconds and
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# then taken away again. Damage tracking is switched off for those seconds
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# so a frame is a full redraw; it is put back exactly as it was. (Hyprland
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# still only draws when something changed: the service shows a 2px overlay
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# that repaints every frame while this runs, see FrameTicker.qml.)
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#
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# Options (set on the effect in rules.json):
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# duration seconds, default 1
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# intensity 0.5..30, how far the picture moves, default 1.5 (a phone buzz; 6 is a proper MSN nudge)
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# speed new positions per second, default 200: at or above the refresh rate every frame differs
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set -uo pipefail
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duration=${AR_OPT_DURATION:-1}
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intensity=${AR_OPT_INTENSITY:-1.5}
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speed=${AR_OPT_SPEED:-200}
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num='^[0-9]*\.?[0-9]+$'
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[[ $duration =~ $num ]] || duration=1
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[[ $intensity =~ $num ]] || intensity=1.5
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[[ $speed =~ $num ]] || speed=200
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command -v hyprctl >/dev/null 2>&1 || { echo "nudge: hyprctl not found" >&2; exit 1; }
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run_dir=${XDG_RUNTIME_DIR:-/tmp}/attention-required
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mkdir -p "$run_dir" || exit 1
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shader=$run_dir/nudge.frag
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# One nudge at a time. A second one arriving mid-shake is dropped rather
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# than queued: by the time it ran, the first would have made the point.
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exec 9>"$run_dir/nudge.lock"
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flock -n 9 || exit 0
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amp=$(awk -v i="$intensity" 'BEGIN { printf "%.5f", (i > 30 ? 30 : i) / 1000 }')
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rate=$(awk -v s="$speed" 'BEGIN { printf "%.1f", (s < 1 ? 1 : s) }')
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cat > "$shader" <<FRAG
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#version 320 es
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precision highp float;
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in vec2 v_texcoord;
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uniform sampler2D tex;
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uniform float time;
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out vec4 fragColor;
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// A new pseudo-random offset every 1/$rate s, so the picture jumps rather
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// than glides: what a fast vibration looks like at any frame rate.
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void main() {
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float step = floor(mod(time, 1000.0) * $rate);
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float r1 = fract(sin(step * 12.9898) * 43758.5453);
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float r2 = fract(sin(step * 78.2330) * 43758.5453);
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vec2 off = (vec2(r1, r2) - 0.5) * 2.0 * $amp;
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fragColor = texture(tex, clamp(v_texcoord + off, vec2(0.0), vec2(1.0)));
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}
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FRAG
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lua_string() {
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local s=${1//\\/\\\\}
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s=${s//\"/\\\"}
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printf '%s' "$s"
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}
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# The config keys are written through Hyprland's Lua API (hl.config), which
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# is what a Lua-configured Hyprland accepts at runtime; older, conf-configured
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# installs still take `hyprctl keyword`.
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set_option() {
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local lua_section=$1 lua_key=$2 conf_key=$3 value=$4
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if hyprctl -q eval "hl.config({ $lua_section = { $lua_key = $value } })" >/dev/null 2>&1; then
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return 0
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fi
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local plain=$value
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[[ $plain == \"*\" ]] && plain=${plain:1:-1}
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hyprctl -q keyword "$conf_key" "$plain" >/dev/null 2>&1
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}
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prev_shader=$(hyprctl -j getoption decoration:screen_shader 2>/dev/null | jq -r '.str // empty')
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[[ -z $prev_shader || $prev_shader == "$shader" ]] && prev_shader='[[EMPTY]]'
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prev_damage=$(hyprctl -j getoption debug:damage_tracking 2>/dev/null | jq -r '.int // 2')
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[[ $prev_damage =~ ^[0-9]+$ ]] || prev_damage=2
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restore() {
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set_option decoration screen_shader decoration:screen_shader "\"$(lua_string "$prev_shader")\""
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set_option debug damage_tracking debug:damage_tracking "$prev_damage"
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}
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trap restore EXIT INT TERM
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set_option debug damage_tracking debug:damage_tracking 0
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set_option decoration screen_shader decoration:screen_shader "\"$(lua_string "$shader")\""
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sleep "$duration"
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