重构逐句视频播放器

src/app/(features)/srt-player/components/atoms/SpeedControl.tsx

@@ -0,0 +1,25 @@
+"use client";
+
+import React from "react";
+import LightButton from "@/components/ui/buttons/LightButton";
+import { SpeedControlProps } from "../../types/player";
+import { getPlaybackRateOptions, getPlaybackRateLabel } from "../../utils/timeUtils";
+
+export default function SpeedControl({ playbackRate, onPlaybackRateChange, disabled, className }: SpeedControlProps) {
+  const speedOptions = getPlaybackRateOptions();
+  
+  const handleSpeedChange = React.useCallback(() => {
+    const currentIndex = speedOptions.indexOf(playbackRate);
+    const nextIndex = (currentIndex + 1) % speedOptions.length;
+    onPlaybackRateChange(speedOptions[nextIndex]);
+  }, [playbackRate, onPlaybackRateChange, speedOptions]);
+
+  return (
+    <LightButton
+      onClick={disabled ? undefined : handleSpeedChange}
+      className={`${disabled ? 'opacity-50 cursor-not-allowed' : ''} ${className || ''}`}
+    >
+      {getPlaybackRateLabel(playbackRate)}
+    </LightButton>
+  );
+}