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.ContentKey 21 import com.android.compose.animation.scene.ElementKey 22 import com.android.compose.animation.scene.content.state.TransitionState 23 import kotlin.math.roundToInt 24 25 /** 26 * Scales the size of an element. Note that this makes the element resize every frame and will 27 * therefore impact the layout of other elements. 28 */ 29 internal class ScaleSize private constructor(private val width: Float, private val height: Float) : 30 InterpolatedPropertyTransformation<IntSize> { 31 override val property = PropertyTransformation.Property.Size 32 transformnull33 override fun PropertyTransformationScope.transform( 34 content: ContentKey, 35 element: ElementKey, 36 transition: TransitionState.Transition, 37 idleValue: IntSize, 38 ): IntSize { 39 return IntSize( 40 width = (idleValue.width * width).roundToInt(), 41 height = (idleValue.height * height).roundToInt(), 42 ) 43 } 44 45 class Factory(private val width: Float = 1f, private val height: Float = 1f) : 46 Transformation.Factory { createnull47 override fun create(): Transformation = ScaleSize(width, height) 48 } 49 } 50