1 /*
2 * Copyright (c) 2021 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 #include "core/components/common/properties/shadow.h"
17
18 #include "core/animation/evaluator.h"
19
20 namespace OHOS::Ace {
21
Blend(const Shadow & to,const Shadow & from,float progress)22 Shadow Shadow::Blend(const Shadow& to, const Shadow& from, float progress)
23 {
24 auto offset = from.offset_ + (to.offset_ - from.offset_) * progress;
25 auto blurRadius = from.blurRadius_ + (to.blurRadius_ - from.blurRadius_) * progress;
26 auto spreadRadius = from.spreadRadius_ + (to.spreadRadius_ - from.spreadRadius_) * progress;
27 LinearEvaluator<Color> evaluator;
28 auto color = evaluator.Evaluate(from.color_, to.color_, progress);
29 return Shadow(blurRadius, spreadRadius, offset, color);
30 }
31
32 } // namespace OHOS::Ace