| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License |
| */ |
| |
| package com.android.systemui.statusbar.notification; |
| |
| import android.text.Layout; |
| import android.text.TextUtils; |
| import android.util.Pools; |
| import android.view.View; |
| import android.widget.TextView; |
| |
| /** |
| * A transform state of a mText view. |
| */ |
| public class TextViewTransformState extends TransformState { |
| |
| private static Pools.SimplePool<TextViewTransformState> sInstancePool |
| = new Pools.SimplePool<>(40); |
| private TextView mText; |
| |
| @Override |
| public void initFrom(View view) { |
| super.initFrom(view); |
| if (view instanceof TextView) { |
| mText = (TextView) view; |
| } |
| } |
| |
| @Override |
| protected boolean sameAs(TransformState otherState) { |
| if (otherState instanceof TextViewTransformState) { |
| TextViewTransformState otherTvs = (TextViewTransformState) otherState; |
| if(TextUtils.equals(otherTvs.mText.getText(), mText.getText())) { |
| int ownEllipsized = getEllipsisCount(); |
| int otherEllipsized = otherTvs.getEllipsisCount(); |
| return ownEllipsized == otherEllipsized |
| && getInnerHeight(mText) == getInnerHeight(otherTvs.mText); |
| } |
| } |
| return super.sameAs(otherState); |
| } |
| |
| private int getInnerHeight(TextView text) { |
| return text.getHeight() - text.getPaddingTop() - text.getPaddingBottom(); |
| } |
| |
| private int getEllipsisCount() { |
| Layout l = mText.getLayout(); |
| if (l != null) { |
| int lines = l.getLineCount(); |
| if (lines > 0) { |
| // we only care about the first line |
| return l.getEllipsisCount(0); |
| } |
| } |
| return 0; |
| } |
| |
| public static TextViewTransformState obtain() { |
| TextViewTransformState instance = sInstancePool.acquire(); |
| if (instance != null) { |
| return instance; |
| } |
| return new TextViewTransformState(); |
| } |
| |
| @Override |
| public void recycle() { |
| super.recycle(); |
| sInstancePool.release(this); |
| } |
| |
| @Override |
| protected void reset() { |
| super.reset(); |
| mText = null; |
| } |
| } |