1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License 15 */ 16 17 package com.android.systemui.statusbar.notification; 18 19 import android.text.Layout; 20 import android.text.TextUtils; 21 import android.util.Pools; 22 import android.view.View; 23 import android.widget.TextView; 24 25 /** 26 * A transform state of a mText view. 27 */ 28 public class TextViewTransformState extends TransformState { 29 30 private static Pools.SimplePool<TextViewTransformState> sInstancePool 31 = new Pools.SimplePool<>(40); 32 private TextView mText; 33 34 @Override initFrom(View view)35 public void initFrom(View view) { 36 super.initFrom(view); 37 if (view instanceof TextView) { 38 mText = (TextView) view; 39 } 40 } 41 42 @Override sameAs(TransformState otherState)43 protected boolean sameAs(TransformState otherState) { 44 if (otherState instanceof TextViewTransformState) { 45 TextViewTransformState otherTvs = (TextViewTransformState) otherState; 46 if(TextUtils.equals(otherTvs.mText.getText(), mText.getText())) { 47 int ownEllipsized = getEllipsisCount(); 48 int otherEllipsized = otherTvs.getEllipsisCount(); 49 return ownEllipsized == otherEllipsized 50 && getInnerHeight(mText) == getInnerHeight(otherTvs.mText); 51 } 52 } 53 return super.sameAs(otherState); 54 } 55 getInnerHeight(TextView text)56 private int getInnerHeight(TextView text) { 57 return text.getHeight() - text.getPaddingTop() - text.getPaddingBottom(); 58 } 59 getEllipsisCount()60 private int getEllipsisCount() { 61 Layout l = mText.getLayout(); 62 if (l != null) { 63 int lines = l.getLineCount(); 64 if (lines > 0) { 65 // we only care about the first line 66 return l.getEllipsisCount(0); 67 } 68 } 69 return 0; 70 } 71 obtain()72 public static TextViewTransformState obtain() { 73 TextViewTransformState instance = sInstancePool.acquire(); 74 if (instance != null) { 75 return instance; 76 } 77 return new TextViewTransformState(); 78 } 79 80 @Override recycle()81 public void recycle() { 82 super.recycle(); 83 sInstancePool.release(this); 84 } 85 86 @Override reset()87 protected void reset() { 88 super.reset(); 89 mText = null; 90 } 91 } 92