Video trimming behind feature flag.

app/src/main/java/org/thoughtcrime/securesms/scribbles/VideoEditorHud.java

@@ -0,0 +1,130 @@
+package org.thoughtcrime.securesms.scribbles;
+
+import android.content.Context;
+import android.net.Uri;
+import android.util.AttributeSet;
+import android.view.View;
+import android.widget.LinearLayout;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.annotation.RequiresApi;
+
+import org.thoughtcrime.securesms.R;
+import org.thoughtcrime.securesms.logging.Log;
+import org.thoughtcrime.securesms.mms.VideoSlide;
+import org.thoughtcrime.securesms.video.DecryptableUriVideoInput;
+import org.thoughtcrime.securesms.video.videoconverter.VideoThumbnailsRangeSelectorView;
+
+import java.io.IOException;
+
+/**
+ * The HUD (heads-up display) that contains all of the tools for editing video.
+ */
+public final class VideoEditorHud extends LinearLayout {
+
+  @SuppressWarnings("unused")
+  private static final String TAG = Log.tag(VideoEditorHud.class);
+
+  private VideoThumbnailsRangeSelectorView videoTimeLine;
+  private EventListener                    eventListener;
+  private View                             playOverlay;
+
+  public VideoEditorHud(@NonNull Context context) {
+    super(context);
+    initialize();
+  }
+
+  public VideoEditorHud(@NonNull Context context, @Nullable AttributeSet attrs) {
+    super(context, attrs);
+    initialize();
+  }
+
+  public VideoEditorHud(@NonNull Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
+    super(context, attrs, defStyleAttr);
+    initialize();
+  }
+
+  private void initialize() {
+    View root = inflate(getContext(), R.layout.video_editor_hud, this);
+    setOrientation(VERTICAL);
+
+    videoTimeLine = root.findViewById(R.id.video_timeline);
+    playOverlay = root.findViewById(R.id.play_overlay);
+
+    playOverlay.setOnClickListener(v -> eventListener.onPlay());
+  }
+
+  public void setEventListener(EventListener eventListener) {
+    this.eventListener = eventListener;
+  }
+
+  @RequiresApi(api = 23)
+  public void setVideoSource(VideoSlide slide) throws IOException {
+    Uri uri = slide.getUri();
+
+    if (uri == null || !slide.hasVideo()) {
+      return;
+    }
+
+    videoTimeLine.setInput(DecryptableUriVideoInput.createForUri(getContext(), uri));
+
+    videoTimeLine.setOnRangeChangeListener(new VideoThumbnailsRangeSelectorView.OnRangeChangeListener() {
+
+      @Override
+      public void onPositionDrag(long position) {
+        if (eventListener != null) {
+          eventListener.onSeek(position, false);
+        }
+      }
+
+      @Override
+      public void onEndPositionDrag(long position) {
+        if (eventListener != null) {
+          eventListener.onSeek(position, true);
+        }
+      }
+
+      @Override
+      public void onRangeDrag(long minValue, long maxValue, long duration, VideoThumbnailsRangeSelectorView.Thumb thumb) {
+        if (eventListener != null) {
+          eventListener.onEditVideoDuration(duration, minValue, maxValue, thumb == VideoThumbnailsRangeSelectorView.Thumb.MIN, false);
+        }
+      }
+
+      @Override
+      public void onRangeDragEnd(long minValue, long maxValue, long duration, VideoThumbnailsRangeSelectorView.Thumb thumb) {
+        if (eventListener != null) {
+          eventListener.onEditVideoDuration(duration, minValue, maxValue, thumb == VideoThumbnailsRangeSelectorView.Thumb.MIN, true);
+        }
+      }
+    });
+  }
+
+  public void playing() {
+    playOverlay.setVisibility(INVISIBLE);
+  }
+
+  public void stopped() {
+    playOverlay.setVisibility(VISIBLE);
+  }
+
+  @RequiresApi(api = 23)
+  public void setDurationRange(long totalDuration, long fromDuration, long toDuration) {
+    videoTimeLine.setRange(fromDuration, toDuration);
+  }
+
+  @RequiresApi(api = 23)
+  public void setPosition(long playbackPositionUs) {
+    videoTimeLine.setActualPosition(playbackPositionUs);
+  }
+
+  public interface EventListener {
+
+    void onEditVideoDuration(long totalDurationUs, long startTimeUs, long endTimeUs, boolean fromEdited, boolean editingComplete);
+
+    void onPlay();
+
+    void onSeek(long position, boolean dragComplete);
+  }
+}