1 /* 2 * Copyright (c) 2022 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_PAINT_METHOD_H 17 #define FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERN_TEXT_TEXT_PAINT_METHOD_H 18 19 #include <utility> 20 21 #include "base/memory/ace_type.h" 22 #include "base/memory/referenced.h" 23 #include "base/utils/macros.h" 24 #include "base/utils/utils.h" 25 #include "core/components_ng/render/node_paint_method.h" 26 #include "core/components_ng/render/paragraph.h" 27 28 namespace OHOS::Ace::NG { 29 class ACE_EXPORT TextPaintMethod : public NodePaintMethod { DECLARE_ACE_TYPE(TextPaintMethod,NodePaintMethod)30 DECLARE_ACE_TYPE(TextPaintMethod, NodePaintMethod) 31 public: 32 TextPaintMethod(const WeakPtr<Pattern>& pattern, RefPtr<Paragraph> paragraph, float baselineOffset) 33 : pattern_(pattern), paragraph_(std::move(paragraph)), baselineOffset_(baselineOffset) 34 {} 35 ~TextPaintMethod() override = default; 36 GetContentDrawFunction(PaintWrapper * paintWrapper)37 CanvasDrawFunction GetContentDrawFunction(PaintWrapper* paintWrapper) override 38 { 39 CHECK_NULL_RETURN(paragraph_, nullptr); 40 auto offset = paintWrapper->GetContentOffset(); 41 auto paintOffset = offset - OffsetF(0.0, std::min(baselineOffset_, 0.0f)); 42 return [paragraph = paragraph_, paintOffset]( 43 RSCanvas& canvas) { paragraph->Paint(canvas, paintOffset.GetX(), paintOffset.GetY()); }; 44 } 45 46 CanvasDrawFunction GetOverlayDrawFunction(PaintWrapper* paintWrapper) override; 47 48 private: 49 void PaintSelection(RSCanvas& canvas, PaintWrapper* paintWrapper); 50 51 WeakPtr<Pattern> pattern_; 52 RefPtr<Paragraph> paragraph_; 53 float baselineOffset_; 54 55 ACE_DISALLOW_COPY_AND_MOVE(TextPaintMethod); 56 }; 57 58 } // namespace OHOS::Ace::NG 59 60 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERN_TEXT_TEXT_PAINT_METHOD_H 61