| /* |
| * Copyright (C) 2015 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. |
| */ |
| |
| #ifndef MINIKIN_LAYOUT_UTILS_H |
| #define MINIKIN_LAYOUT_UTILS_H |
| |
| #include <stddef.h> |
| #include <stdint.h> |
| |
| namespace minikin { |
| |
| /* |
| * Determine whether the code unit is a word space for the purposes of |
| * justification. |
| */ |
| bool isWordSpace(uint16_t code_unit); |
| |
| /** |
| * Return offset of previous word break. It is either < offset or == 0. |
| * |
| * For the purpose of layout, a word break is a boundary with no |
| * kerning or complex script processing. This is necessarily a |
| * heuristic, but should be accurate most of the time. |
| */ |
| size_t getPrevWordBreakForCache(const uint16_t* chars, |
| size_t offset, |
| size_t len); |
| |
| /** |
| * Return offset of next word break. It is either > offset or == len. |
| * |
| * For the purpose of layout, a word break is a boundary with no |
| * kerning or complex script processing. This is necessarily a |
| * heuristic, but should be accurate most of the time. |
| */ |
| size_t getNextWordBreakForCache(const uint16_t* chars, |
| size_t offset, |
| size_t len); |
| |
| } // namespace minikin |
| #endif // MINIKIN_LAYOUT_UTILS_H |