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Add shadow under compose view on scroll

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Fixes #5098
Closes #5796
// FREEBIE
This commit is contained in:
mateoeh 2016-10-19 22:08:00 -05:00 committed by Moxie Marlinspike
parent b8d938a020
commit 0a72f6b32e
4 changed files with 64 additions and 9 deletions
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8
res/drawable/compose_divider_background.xml Normal file
View File

@ -0,0 +1,8 @@
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<gradient
android:angle="90"
android:dither="true"
android:endColor="@android:color/transparent"
android:startColor="@color/conversation_compose_divider" />
</shape>

24
res/layout/conversation_fragment.xml
View File

@ -1,16 +1,24 @@
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="match_parent">
<android.support.v7.widget.RecyclerView
android:id="@android:id/list"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1.0"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbars="vertical"
android:cacheColorHint="?conversation_background" />
</LinearLayout>
<!--suppress AndroidLintUnusedAttribute-->
<View android:id="@+id/compose_divider"
android:layout_width="match_parent"
android:layout_height="2dp"
android:layout_gravity="bottom"
android:background="@drawable/compose_divider_background"
android:alpha="0"
android:visibility="invisible" />
</FrameLayout>

2
res/values/colors.xml
View File

@ -25,6 +25,8 @@
<color name="gray95_transparent50">#7F111111</color>
<color name="conversation_compose_divider">#32000000</color>
<color name="conversation_list_item_background_read_light">@color/gray5</color>
<color name="conversation_list_item_background_unread_light">#ffffffff</color>
<color name="conversation_list_item_background_read_dark">#ff000000</color>

39
src/org/thoughtcrime/securesms/ConversationFragment.java
View File

@ -33,6 +33,7 @@ import android.support.v7.view.ActionMode;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.RecyclerView.ItemAnimator.ItemAnimatorFinishedListener;
import android.support.v7.widget.RecyclerView.OnScrollListener;
import android.text.ClipboardManager;
import android.text.TextUtils;
import android.util.Log;
@ -78,6 +79,7 @@ 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;
@ -88,6 +90,7 @@ public class ConversationFragment extends Fragment
private Locale locale;
private RecyclerView list;
private View loadMoreView;
private View composeDivider;
@Override
public void onCreate(Bundle icicle) {
@ -99,10 +102,13 @@ public class ConversationFragment extends Fragment
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle bundle) {
final View view = inflater.inflate(R.layout.conversation_fragment, container, false);
list = ViewUtil.findById(view, android.R.id.list);
list = ViewUtil.findById(view, android.R.id.list);
composeDivider = ViewUtil.findById(view, R.id.compose_divider);
final LinearLayoutManager layoutManager = new LinearLayoutManager(getActivity(), LinearLayoutManager.VERTICAL, true);
list.setHasFixedSize(false);
list.setLayoutManager(layoutManager);
list.addOnScrollListener(scrollListener);
loadMoreView = inflater.inflate(R.layout.load_more_header, container, false);
loadMoreView.setOnClickListener(new OnClickListener() {
@ -395,6 +401,37 @@ public class ConversationFragment extends Fragment
void setThreadId(long threadId);
}
private class ConversationScrollListener extends OnScrollListener {
private boolean wasAtBottom = true;
@Override
public void onScrolled(final RecyclerView rv, final int dx, final int dy) {
boolean currentlyAtBottom = isAtBottom();
if (wasAtBottom != currentlyAtBottom) {
composeDivider.setVisibility(currentlyAtBottom ? View.INVISIBLE : View.VISIBLE);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR1) {
composeDivider.animate().alpha(currentlyAtBottom ? 0 : 1);
} else if (Build.VERSION.SDK_INT > Build.VERSION_CODES.HONEYCOMB) {
composeDivider.setAlpha(currentlyAtBottom ? 0 : 1);
}
wasAtBottom = currentlyAtBottom;
}
}
private boolean isAtBottom() {
if (list.getChildCount() == 0) return true;
View bottomView = list.getChildAt(0);
int firstVisibleItem = ((LinearLayoutManager) list.getLayoutManager()).findFirstVisibleItemPosition();
boolean isAtBottom = (firstVisibleItem == 0);
return isAtBottom && bottomView.getBottom() <= list.getHeight();
}
}
private class ConversationFragmentItemClickListener implements ItemClickListener {
@Override