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Update look and feel of fast-scroll-to-bottom

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Closes #6086
// FREEBIE
This commit is contained in:
Moxie Marlinspike
2017-01-24 11:04:32 -08:00
parent aa9d8e4d14
commit e2b81c9637
8 changed files with 59 additions and 37 deletions
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59
src/org/thoughtcrime/securesms/ConversationFragment.java
View File

@@ -24,6 +24,7 @@ import android.database.Cursor;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v4.app.Fragment;
import android.support.v4.app.LoaderManager;
import android.support.v4.content.Loader;
@@ -44,6 +45,8 @@ import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.Window;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.Toast;
import org.thoughtcrime.securesms.ConversationAdapter.ItemClickListener;
@@ -79,7 +82,6 @@ public class ConversationFragment extends Fragment
private final ActionModeCallback actionModeCallback = new ActionModeCallback();
private final ItemClickListener selectionClickListener = new ConversationFragmentItemClickListener();
private final OnScrollListener scrollListener = new ConversationScrollListener();
private ConversationFragmentListener listener;
@@ -117,7 +119,6 @@ public class ConversationFragment extends Fragment
final LinearLayoutManager layoutManager = new LinearLayoutManager(getActivity(), LinearLayoutManager.VERTICAL, true);
list.setHasFixedSize(false);
list.setLayoutManager(layoutManager);
list.addOnScrollListener(scrollListener);
list.setItemAnimator(null);
loadMoreView = inflater.inflate(R.layout.load_more_header, container, false);
@@ -173,8 +174,11 @@ public class ConversationFragment extends Fragment
}
private void initializeResources() {
this.recipients = RecipientFactory.getRecipientsForIds(getActivity(), getActivity().getIntent().getLongArrayExtra("recipients"), true);
this.threadId = this.getActivity().getIntent().getLongExtra("thread_id", -1);
this.recipients = RecipientFactory.getRecipientsForIds(getActivity(), getActivity().getIntent().getLongArrayExtra("recipients"), true);
this.threadId = this.getActivity().getIntent().getLongExtra("thread_id", -1);
OnScrollListener scrollListener = new ConversationScrollListener(getActivity());
list.addOnScrollListener(scrollListener);
}
private void initializeListAdapter() {
@@ -408,26 +412,39 @@ public class ConversationFragment extends Fragment
}
private class ConversationScrollListener extends OnScrollListener {
private boolean wasAtBottom = true;
private final Animation scrollButtonInAnimation;
private final Animation scrollButtonOutAnimation;
private boolean wasAtBottom = true;
private boolean wasAtZoomScrollHeight = false;
ConversationScrollListener(@NonNull Context context) {
this.scrollButtonInAnimation = AnimationUtils.loadAnimation(context, R.anim.fade_scale_in);
this.scrollButtonOutAnimation = AnimationUtils.loadAnimation(context, R.anim.fade_scale_out);
this.scrollButtonInAnimation.setDuration(100);
this.scrollButtonOutAnimation.setDuration(50);
}
@Override
public void onScrolled(final RecyclerView rv, final int dx, final int dy) {
boolean currentlyAtBottom = isAtBottom();
boolean currentlyAtBottom = isAtBottom();
boolean currentlyAtZoomScrollHeight = isAtZoomScrollHeight();
if (wasAtBottom != currentlyAtBottom) {
composeDivider.setVisibility(currentlyAtBottom ? View.INVISIBLE : View.VISIBLE);
scrollToBottomButton.setVisibility(currentlyAtBottom ? View.INVISIBLE : View.VISIBLE);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR1) {
composeDivider.animate().alpha(currentlyAtBottom ? 0 : 1);
scrollToBottomButton.animate().alpha(currentlyAtBottom ? 0 : 1);
} else if (Build.VERSION.SDK_INT > Build.VERSION_CODES.HONEYCOMB) {
composeDivider.setAlpha(currentlyAtBottom ? 0 : 1);
scrollToBottomButton.setAlpha(currentlyAtBottom ? 0 : 1);
}
wasAtBottom = currentlyAtBottom;
if (currentlyAtBottom && !wasAtBottom) {
ViewUtil.fadeOut(composeDivider, 50, View.INVISIBLE);
ViewUtil.animateOut(scrollToBottomButton, scrollButtonOutAnimation, View.INVISIBLE);
} else if (!currentlyAtBottom && wasAtBottom) {
ViewUtil.fadeIn(composeDivider, 500);
}
if (currentlyAtZoomScrollHeight && !wasAtZoomScrollHeight) {
ViewUtil.animateIn(scrollToBottomButton, scrollButtonInAnimation);
}
wasAtBottom = currentlyAtBottom;
wasAtZoomScrollHeight = currentlyAtZoomScrollHeight;
}
private boolean isAtBottom() {
@@ -439,6 +456,10 @@ public class ConversationFragment extends Fragment
return isAtBottom && bottomView.getBottom() <= list.getHeight();
}
private boolean isAtZoomScrollHeight() {
return ((LinearLayoutManager) list.getLayoutManager()).findFirstCompletelyVisibleItemPosition() > 4;
}
}
private class ConversationFragmentItemClickListener implements ItemClickListener {