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Video playback on TextureView and DepthPageTransformer.

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This commit is contained in:
Alan Evans
2019-07-30 14:25:35 -04:00
parent 0c0d7aeead
commit a6890fc8dd
4 changed files with 56 additions and 26 deletions
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2
src/org/thoughtcrime/securesms/MediaPreviewActivity.java
View File

@@ -47,6 +47,7 @@ import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import androidx.viewpager.widget.ViewPager;
import org.thoughtcrime.securesms.animation.DepthPageTransformer;
import org.thoughtcrime.securesms.attachments.DatabaseAttachment;
import org.thoughtcrime.securesms.components.viewpager.ExtendedOnPageChangedListener;
import org.thoughtcrime.securesms.database.Address;
@@ -192,6 +193,7 @@ public final class MediaPreviewActivity extends PassphraseRequiredActionBarActiv
private void initializeViews() {
mediaPager = findViewById(R.id.media_pager);
mediaPager.setOffscreenPageLimit(1);
mediaPager.setPageTransformer(true, new DepthPageTransformer());
viewPagerListener = new ViewPagerListener();
mediaPager.addOnPageChangeListener(viewPagerListener);

40
src/org/thoughtcrime/securesms/animation/DepthPageTransformer.java Normal file
View File

@@ -0,0 +1,40 @@
package org.thoughtcrime.securesms.animation;
import android.view.View;
import androidx.annotation.NonNull;
import androidx.viewpager.widget.ViewPager;
/**
* Based on https://developer.android.com/training/animation/screen-slide#depth-page
*/
public final class DepthPageTransformer implements ViewPager.PageTransformer {
private static final float MIN_SCALE = 0.75f;
public void transformPage(@NonNull View view, float position) {
final int pageWidth = view.getWidth();
if (position < -1f) {
view.setAlpha(0f);
} else if (position <= 0f) {
view.setAlpha(1f);
view.setTranslationX(0f);
view.setScaleX(1f);
view.setScaleY(1f);
} else if (position <= 1f) {
view.setAlpha(1f - position);
view.setTranslationX(pageWidth * -position);
final float scaleFactor = MIN_SCALE + (1f - MIN_SCALE) * (1f - Math.abs(position));
view.setScaleX(scaleFactor);
view.setScaleY(scaleFactor);
} else {
view.setAlpha(0f);
}
}
}