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Display transcript text and follow along the audio (#7103)
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| #!/bin/zsh | ||
| #!/bin/bash | ||
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| set -o pipefail | ||
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145 changes: 145 additions & 0 deletions
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app/src/main/java/de/danoeh/antennapod/ui/screen/playback/TranscriptAdapter.java
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| package de.danoeh.antennapod.ui.screen.playback; | ||
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| import android.content.Context; | ||
| import android.view.LayoutInflater; | ||
| import android.view.View; | ||
| import android.view.ViewGroup; | ||
| import androidx.annotation.NonNull; | ||
| import androidx.core.content.ContextCompat; | ||
| import androidx.recyclerview.widget.RecyclerView; | ||
| import com.google.android.material.elevation.SurfaceColors; | ||
| import de.danoeh.antennapod.databinding.TranscriptItemBinding; | ||
| import de.danoeh.antennapod.event.playback.PlaybackPositionEvent; | ||
| import de.danoeh.antennapod.model.feed.FeedMedia; | ||
| import de.danoeh.antennapod.model.feed.TranscriptSegment; | ||
| import de.danoeh.antennapod.model.playback.Playable; | ||
| import de.danoeh.antennapod.ui.common.Converter; | ||
| import de.danoeh.antennapod.ui.transcript.TranscriptViewholder; | ||
| import java.util.Set; | ||
| import org.greenrobot.eventbus.EventBus; | ||
| import org.greenrobot.eventbus.Subscribe; | ||
| import org.greenrobot.eventbus.ThreadMode; | ||
| import org.jsoup.internal.StringUtil; | ||
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| public class TranscriptAdapter extends RecyclerView.Adapter<TranscriptViewholder> { | ||
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| public String tag = "TranscriptAdapter"; | ||
| private final SegmentClickListener segmentClickListener; | ||
| private final Context context; | ||
| private FeedMedia media; | ||
| private int prevHighlightPosition = -1; | ||
| private int highlightPosition = -1; | ||
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| public TranscriptAdapter(Context context, SegmentClickListener segmentClickListener) { | ||
| this.context = context; | ||
| this.segmentClickListener = segmentClickListener; | ||
| } | ||
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| @NonNull | ||
| @Override | ||
| public TranscriptViewholder onCreateViewHolder(@NonNull ViewGroup viewGroup, int viewType) { | ||
| return new TranscriptViewholder(TranscriptItemBinding.inflate(LayoutInflater.from(context), viewGroup, false)); | ||
| } | ||
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| public void setMedia(Playable media) { | ||
| if (!(media instanceof FeedMedia)) { | ||
| return; | ||
| } | ||
| this.media = (FeedMedia) media; | ||
| notifyDataSetChanged(); | ||
| } | ||
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| @Override | ||
| public void onBindViewHolder(@NonNull TranscriptViewholder holder, int position) { | ||
| if (media == null || media.getTranscript() == null) { | ||
| return; | ||
| } | ||
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| TranscriptSegment seg = media.getTranscript().getSegmentAt(position); | ||
| holder.viewContent.setOnClickListener(v -> { | ||
| if (segmentClickListener != null) { | ||
| segmentClickListener.onTranscriptClicked(position, seg); | ||
| } | ||
| }); | ||
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| String timecode = Converter.getDurationStringLong((int) seg.getStartTime()); | ||
| if (!StringUtil.isBlank(seg.getSpeaker())) { | ||
| if (position > 0 && media.getTranscript() | ||
| .getSegmentAt(position - 1).getSpeaker().equals(seg.getSpeaker())) { | ||
| holder.viewTimecode.setVisibility(View.GONE); | ||
| holder.viewContent.setText(seg.getWords()); | ||
| } else { | ||
| holder.viewTimecode.setVisibility(View.VISIBLE); | ||
| holder.viewTimecode.setText(timecode + " • " + seg.getSpeaker()); | ||
| holder.viewContent.setText(seg.getWords()); | ||
| } | ||
| } else { | ||
| Set<String> speakers = media.getTranscript().getSpeakers(); | ||
| if (speakers.isEmpty() && (position % 5 == 0)) { | ||
| holder.viewTimecode.setVisibility(View.VISIBLE); | ||
| holder.viewTimecode.setText(timecode); | ||
| } | ||
| holder.viewContent.setText(seg.getWords()); | ||
| } | ||
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| if (position == highlightPosition) { | ||
| float density = context.getResources().getDisplayMetrics().density; | ||
| holder.viewContent.setBackgroundColor(SurfaceColors.getColorForElevation(context, 32 * density)); | ||
| holder.viewContent.setAlpha(1.0f); | ||
| holder.viewTimecode.setAlpha(1.0f); | ||
| holder.viewContent.setAlpha(1.0f); | ||
| } else { | ||
| holder.viewContent.setBackgroundColor(ContextCompat.getColor(context, android.R.color.transparent)); | ||
| holder.viewContent.setAlpha(0.5f); | ||
| holder.viewTimecode.setAlpha(0.5f); | ||
| } | ||
| } | ||
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| @Subscribe(threadMode = ThreadMode.MAIN) | ||
| public void onEventMainThread(PlaybackPositionEvent event) { | ||
| if (media == null || media.getTranscript() == null) { | ||
| return; | ||
| } | ||
| int index = media.getTranscript().findSegmentIndexBefore(event.getPosition()); | ||
| if (index < 0 || index > media.getTranscript().getSegmentCount()) { | ||
| return; | ||
| } | ||
| if (prevHighlightPosition != highlightPosition) { | ||
| prevHighlightPosition = highlightPosition; | ||
| } | ||
| if (index != highlightPosition) { | ||
| highlightPosition = index; | ||
| notifyItemChanged(prevHighlightPosition); | ||
| notifyItemChanged(highlightPosition); | ||
| } | ||
| } | ||
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| @Override | ||
| public int getItemCount() { | ||
| if (media == null) { | ||
| return 0; | ||
| } | ||
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| if (media.getTranscript() == null) { | ||
| return 0; | ||
| } | ||
| return media.getTranscript().getSegmentCount(); | ||
| } | ||
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| @Override | ||
| public void onAttachedToRecyclerView(@NonNull RecyclerView recyclerView) { | ||
| super.onAttachedToRecyclerView(recyclerView); | ||
| EventBus.getDefault().register(this); | ||
| } | ||
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| @Override | ||
| public void onDetachedFromRecyclerView(@NonNull RecyclerView recyclerView) { | ||
| super.onDetachedFromRecyclerView(recyclerView); | ||
| EventBus.getDefault().unregister(this); | ||
| } | ||
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| public interface SegmentClickListener { | ||
| void onTranscriptClicked(int position, TranscriptSegment seg); | ||
| } | ||
| } |
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