1 /* 2 * Copyright (c) 2024 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 FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERN_TEXT_TEXT_ADAPT_FONT_SIZER_H 17 #define FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERN_TEXT_TEXT_ADAPT_FONT_SIZER_H 18 19 #include <string> 20 21 #include "base/geometry/dimension.h" 22 #include "base/memory/ace_type.h" 23 #include "core/components_ng/layout/layout_wrapper.h" 24 #include "core/components_ng/pattern/text/text_styles.h" 25 #include "core/components_ng/render/paragraph.h" 26 27 namespace OHOS::Ace::NG { 28 class PipelineContext; 29 30 class TextAdaptFontSizer : public virtual AceType { 31 DECLARE_ACE_TYPE(TextAdaptFontSizer, AceType); 32 public: 33 virtual bool CreateParagraphAndLayout(const TextStyle& textStyle, const std::string& content, 34 const LayoutConstraintF& contentConstraint, LayoutWrapper* layoutWrapper, bool needLayout = true) = 0; 35 virtual RefPtr<Paragraph> GetParagraph() const = 0; 36 virtual void GetSuitableSize(SizeF& maxSize, LayoutWrapper* layoutWrapper) = 0; 37 38 bool AdaptMaxFontSize(TextStyle& textStyle, const std::string& content, const Dimension& stepUnit, 39 const LayoutConstraintF& contentConstraint, LayoutWrapper* layoutWrapper); 40 bool AdaptMinFontSize(TextStyle& textStyle, const std::string& content, const Dimension& stepUnit, 41 const LayoutConstraintF& contentConstraint, LayoutWrapper* layoutWrapper); AdaptInlineFocusFontSize(TextStyle & textStyle,const std::string & content,const Dimension & stepUnit,const LayoutConstraintF & contentConstraint,LayoutWrapper * layoutWrapper)42 virtual bool AdaptInlineFocusFontSize(TextStyle& textStyle, const std::string& content, const Dimension& stepUnit, 43 const LayoutConstraintF& contentConstraint, LayoutWrapper* layoutWrapper) 44 { 45 return false; 46 } 47 48 static bool IsNeedAdaptFontSize(const double& maxFontSize, const double& minFontSize); 49 static bool IsNeedAdaptFontSize(const TextStyle& textStyle, const LayoutConstraintF& contentConstraint); 50 static void GetAdaptMaxMinFontSize(const TextStyle& textStyle, double& maxFontSize, double& minFontSize, 51 const LayoutConstraintF& contentConstraint); 52 static void GetAdaptFontSizeStep(const TextStyle& textStyle, double& stepSize, const Dimension& stepUnit, 53 const LayoutConstraintF& contentConstraint); 54 static SizeF GetMaxMeasureSize(const LayoutConstraintF& contentConstraint); 55 56 protected: 57 virtual bool DidExceedMaxLines(const SizeF& maxSize); 58 void SetAdaptFontSizeLineHeight(const Dimension& lineHeight, const TextStyle& textStyle); 59 bool IsAdaptFontSizeExceedLineHeight(const RefPtr<Paragraph>& paragraph); 60 61 private: 62 virtual bool IsAdaptExceedLimit(const SizeF& maxSize); 63 double lineHeight_ = 0.0; 64 }; 65 } // namespace OHOS::Ace::NG 66 67 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERN_TEXT_TEXT_ADAPT_FONT_SIZER_H 68