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         : loadingCtx_(loadingCtx), altLoadingCtx_(altLoadingCtx)
32     {}
33     ~ImageLayoutAlgorithm() override = default;
34 
OnReset()35     void OnReset() override
36     {
37         loadingCtx_ = nullptr;
38         altLoadingCtx_ = nullptr;
39     }
40 
41     std::optional<SizeF> MeasureContent(
42         const LayoutConstraintF& contentConstraint, LayoutWrapper* layoutWrapper) override;
43 
44     void Measure(LayoutWrapper* layoutWrapper) override;
45 
46     void Layout(LayoutWrapper* layoutWrapper) override;
47 
48     static void PerformImageAnimationLayout(LayoutWrapper* layoutWrapper);
49     static bool IsImageAnimationLayout(LayoutWrapper* layoutWrapper);
50 
51 private:
52     WeakPtr<ImageLoadingContext> loadingCtx_;
53     WeakPtr<ImageLoadingContext> altLoadingCtx_;
54     ACE_DISALLOW_COPY_AND_MOVE(ImageLayoutAlgorithm);
55 };
56 } // namespace OHOS::Ace::NG
57 
58 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERN_IMAGE_IMAGE_LAYOUT_ALGORITHM_H
59