| /* |
| * Copyright (C) 2018 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 android.graphics.text; |
| |
| import android.annotation.NonNull; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| |
| // Based on the native implementation of LineBreaker in |
| // frameworks/base/core/jni/android_text_StaticLayout.cpp revision b808260 |
| public abstract class BaseLineBreaker { |
| |
| protected static final int TAB_MASK = 0x20000000; // keep in sync with StaticLayout |
| |
| protected final @NonNull List<Primitive> mPrimitives; |
| protected final @NonNull |
| LineWidth mLineWidth; |
| protected final @NonNull |
| TabStops mTabStops; |
| |
| public BaseLineBreaker(@NonNull List<Primitive> primitives, @NonNull LineWidth lineWidth, |
| @NonNull TabStops tabStops) { |
| mPrimitives = Collections.unmodifiableList(primitives); |
| mLineWidth = lineWidth; |
| mTabStops = tabStops; |
| } |
| |
| public abstract Result computeBreaks(); |
| |
| public static class Result { |
| List<Integer> mLineBreakOffset = new ArrayList<>(); |
| List<Float> mLineWidths = new ArrayList<>(); |
| List<Float> mLineAscents = new ArrayList<>(); |
| List<Float> mLineDescents = new ArrayList<>(); |
| List<Integer> mLineFlags = new ArrayList<>(); |
| } |
| } |