1 /*
2  * Copyright (C) 2018 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 android.graphics.text;
18 
19 import android.annotation.Nullable;
20 
21 // Based on the native implementation of TabStops in
22 // frameworks/base/core/jni/android_text_StaticLayout.cpp revision b808260
23 public class TabStops {
24     @Nullable
25     private float[] mStops;
26     private final float mTabWidth;
27 
TabStops(@ullable float[] stops, float defaultTabWidth)28     public TabStops(@Nullable float[] stops, float defaultTabWidth) {
29         mTabWidth = defaultTabWidth;
30         mStops = stops;
31     }
32 
width(float widthSoFar)33     public float width(float widthSoFar) {
34         if (mStops != null) {
35             for (float f : mStops) {
36                 if (f > widthSoFar) {
37                     return f;
38                 }
39             }
40         }
41         // find the next tabStop after widthSoFar.
42         return ((widthSoFar + mTabWidth) / mTabWidth) * mTabWidth;
43     }
44 }
45