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4e3adc6fb2
This CL does: 1. Move the getNextWordBreak/getPrevWordBreak function to a separate source file. 2. Adding "ForCache" suffix for function name for making clear these function is for layout cache. 3. Introduce unit tests for them. Bug: 11256006 Change-Id: I4138751a4570915f1a0d6c8921f89700f8ec7f35
43 lines
1.4 KiB
C
43 lines
1.4 KiB
C
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef MINIKIN_LAYOUT_UTILS_H
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#define MINIKIN_LAYOUT_UTILS_H
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#include <stdint.h>
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/**
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* Return offset of previous word break. It is either < offset or == 0.
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*
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* For the purpose of layout, a word break is a boundary with no
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* kerning or complex script processing. This is necessarily a
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* heuristic, but should be accurate most of the time.
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*/
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size_t getPrevWordBreakForCache(
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const uint16_t* chars, size_t offset, size_t len);
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/**
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* Return offset of next word break. It is either > offset or == len.
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*
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* For the purpose of layout, a word break is a boundary with no
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* kerning or complex script processing. This is necessarily a
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* heuristic, but should be accurate most of the time.
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*/
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size_t getNextWordBreakForCache(
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const uint16_t* chars, size_t offset, size_t len);
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#endif // MINIKIN_LAYOUT_UTILS_H
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