73 lines
2.3 KiB
Bash
73 lines
2.3 KiB
Bash
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#!/bin/bash
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# =================配置区域=================
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SOUND="/usr/share/sounds/freedesktop/stereo/camera-shutter.oga"
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# 这是一个“扳机”文件，存于内存中 (/dev/shm)，读写极快
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TRIGGER_FILE="/dev/shm/niri_screenshot_armed"
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# 有效期：按下截图键后，多少秒内产生了图片才响？(防止你取消截图后，下次复制图片误响)
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TIMEOUT_SEC=15
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# =========================================
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# 环境检查
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if ! command -v pw-play >/dev/null; then
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notify-send "错误: 未找到 pw-play"
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exit 1
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fi
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# =========================================
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# 1. 定义信号处理 (收到信号 = 上膛)
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# =========================================
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arm_trigger() {
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# 更新文件的修改时间，或者创建它
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touch "$TRIGGER_FILE"
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}
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# 注册信号：收到 USR1 就执行 arm_trigger
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trap arm_trigger SIGUSR1
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# =========================================
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# 2. 启动剪贴板监听 (后台运行)
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# =========================================
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# 只有当剪贴板真正发生变化时，这个子进程才会醒来
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wl-paste --watch bash -c "
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# A. 检查是不是图片
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if wl-paste --list-types 2>/dev/null | grep -q 'image/'; then
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# B. 检查有没有“上膛” (文件是否存在)
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if [ -f \"$TRIGGER_FILE\" ]; then
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# C. 检查“上膛”是否过期 (利用文件修改时间)
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# $(date +%s) - stat获取的时间
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NOW=\$(date +%s)
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FILE_TIME=\$(stat -c %Y \"$TRIGGER_FILE\")
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DIFF=\$((NOW - FILE_TIME))
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if [ \$DIFF -lt $TIMEOUT_SEC ]; then
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# 조건을 满足：是图片 + 已上膛 + 没过期
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pw-play \"$SOUND\" &
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# D. 销毁扳机 (防止连响)
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rm -f \"$TRIGGER_FILE\"
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fi
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fi
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fi
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" &
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# 获取 wl-paste 的 PID，以便脚本退出时杀掉它
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WATCHER_PID=$!
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# =========================================
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# 3. 守护进程主循环 (0 CPU 占用)
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# =========================================
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# 这里的 trap 负责在脚本退出时清理子进程
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trap "kill $WATCHER_PID; exit" INT TERM EXIT
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# 写入当前 PID 方便调试 (可选)
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# echo $$ > /tmp/niri-sound.pid
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echo "截图音效服务已启动，等待 SIGUSR1 信号..."
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# 无限睡眠，只响应信号
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while true; do
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sleep infinity & wait $!
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done
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