1 /* 2 * Copyright (c) 2023 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef ROSEN_MODULES_TEXGINE_SRC_LINE_BREAKER_H 17 #define ROSEN_MODULES_TEXGINE_SRC_LINE_BREAKER_H 18 19 #include <vector> 20 21 #include "line_metrics.h" 22 #include "texgine/typography_types.h" 23 24 namespace OHOS { 25 namespace Rosen { 26 namespace TextEngine { 27 struct ScoredSpan { 28 VariantSpan span; 29 double preBreak; 30 double postBreak; 31 double score; 32 int32_t prev; 33 }; 34 35 class LineBreaker { 36 public: 37 static std::vector<LineMetrics> BreakLines(std::vector<VariantSpan> &spans, 38 const TypographyStyle &tstyle, const double widthLimit) noexcept(false); 39 static std::vector<struct ScoredSpan> GenerateScoreSpans(const std::vector<VariantSpan> &spans) noexcept(false); 40 static void DoBreakLines(std::vector<struct ScoredSpan> &scoredSpans, const double widthLimit, 41 const TypographyStyle &tstyle) noexcept(false); 42 static std::vector<int32_t> GenerateBreaks(const std::vector<struct ScoredSpan> &scoredSpans) noexcept(false); 43 static std::vector<LineMetrics> GenerateLineMetrics(std::vector<VariantSpan> &spans, 44 std::vector<int32_t> &breaks) noexcept(false); 45 }; 46 } // namespace TextEngine 47 } // namespace Rosen 48 } // namespace OHOS 49 50 #endif // ROSEN_MODULES_TEXGINE_SRC_LINE_BREAKER_H 51