1 /*
2  * Copyright 2023 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.compose.animation.scene.transformation
18 
19 import androidx.compose.ui.unit.IntSize
20 import com.android.compose.animation.scene.Element
21 import com.android.compose.animation.scene.ElementMatcher
22 import com.android.compose.animation.scene.SceneKey
23 import com.android.compose.animation.scene.SceneTransitionLayoutImpl
24 import com.android.compose.animation.scene.TransitionState
25 import kotlin.math.roundToInt
26 
27 /**
28  * Scales the size of an element. Note that this makes the element resize every frame and will
29  * therefore impact the layout of other elements.
30  */
31 internal class ScaleSize(
32     override val matcher: ElementMatcher,
33     private val width: Float = 1f,
34     private val height: Float = 1f,
35 ) : PropertyTransformation<IntSize> {
transformnull36     override fun transform(
37         layoutImpl: SceneTransitionLayoutImpl,
38         scene: SceneKey,
39         element: Element,
40         sceneState: Element.SceneState,
41         transition: TransitionState.Transition,
42         value: IntSize,
43     ): IntSize {
44         return IntSize(
45             width = (value.width * width).roundToInt(),
46             height = (value.height * height).roundToInt(),
47         )
48     }
49 }
50