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_IMAGE_IMAGE_LAYOUT_ALGORITHM_H 17 #define FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERN_IMAGE_IMAGE_LAYOUT_ALGORITHM_H 18 19 #include "core/components_ng/image_provider/image_loading_context.h" 20 #include "core/components_ng/layout/box_layout_algorithm.h" 21 #include "core/components_ng/layout/layout_wrapper.h" 22 23 namespace OHOS::Ace::NG { 24 25 class ACE_EXPORT ImageLayoutAlgorithm : public BoxLayoutAlgorithm { 26 DECLARE_ACE_TYPE(ImageLayoutAlgorithm, BoxLayoutAlgorithm); 27 28 public: 29 ImageLayoutAlgorithm( 30 const WeakPtr<ImageLoadingContext>& loadingCtx, const WeakPtr<ImageLoadingContext>& altLoadingCtx = nullptr, 31 bool autoResizeDefault = true) loadingCtx_(loadingCtx)32 : loadingCtx_(loadingCtx), altLoadingCtx_(altLoadingCtx), autoResizeDefault_(autoResizeDefault) 33 {} 34 ~ImageLayoutAlgorithm() override = default; 35 OnReset()36 void OnReset() override 37 { 38 loadingCtx_ = nullptr; 39 altLoadingCtx_ = nullptr; 40 } 41 42 std::optional<SizeF> MeasureContent( 43 const LayoutConstraintF& contentConstraint, LayoutWrapper* layoutWrapper) override; 44 45 void Layout(LayoutWrapper* layoutWrapper) override; 46 47 private: 48 WeakPtr<ImageLoadingContext> loadingCtx_; 49 WeakPtr<ImageLoadingContext> altLoadingCtx_; 50 bool autoResizeDefault_; 51 ACE_DISALLOW_COPY_AND_MOVE(ImageLayoutAlgorithm); 52 }; 53 } // namespace OHOS::Ace::NG 54 55 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERN_IMAGE_IMAGE_LAYOUT_ALGORITHM_H 56