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_MEASURER_H 17 #define ROSEN_MODULES_TEXGINE_SRC_MEASURER_H 18 19 #include <cstdint> 20 #include <vector> 21 22 #include "char_groups.h" 23 #include "font_collection.h" 24 #include "texgine/text_style.h" 25 #include "texgine/typography.h" 26 #include "word_breaker.h" 27 28 namespace OHOS { 29 namespace Rosen { 30 namespace TextEngine { 31 class Measurer { 32 public: 33 static std::unique_ptr<Measurer> Create(const std::vector<uint16_t> &text, const FontCollection &fontCollection); 34 35 Measurer(const std::vector<uint16_t> &text, const FontCollection &fontCollection); 36 virtual ~Measurer() = default; 37 void SetFontStyle(const FontStyles &style); 38 void SetLocale(const std::string &locale); 39 void SetRTL(bool rtl); 40 void SetSize(uint32_t size); 41 void SetRange(size_t start, size_t end); 42 void SetFontFeatures(const FontFeatures &features); 43 void SetSpacing(double letterSpacing, double wordSpacing); 44 virtual const std::vector<Boundary> &GetWordBoundary() const = 0; 45 virtual int Measure(CharGroups &cgs) = 0; 46 47 protected: 48 const std::vector<uint16_t> &text_; 49 const FontCollection &fontCollection_; 50 FontStyles style_; 51 std::string locale_ = ""; 52 bool rtl_ = false; 53 uint32_t size_ = 16; // default text_style fontSize_ 54 size_t startIndex_ = 0; 55 size_t endIndex_ = 0; 56 const FontFeatures *fontFeatures_ = nullptr; 57 double letterSpacing_ = 0.0; 58 double wordSpacing_ = 0.0; 59 }; 60 } // namespace TextEngine 61 } // namespace Rosen 62 } // namespace OHOS 63 64 #endif // ROSEN_MODULES_TEXGINE_SRC_MEASURER_H 65