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.geometry.Offset 20 import com.android.compose.animation.scene.ContentKey 21 import com.android.compose.animation.scene.ElementKey 22 import com.android.compose.animation.scene.Scale 23 import com.android.compose.animation.scene.content.state.TransitionState 24 25 /** 26 * Scales the draw size of an element. Note this will only scale the draw inside of an element, 27 * therefore it won't impact layout of elements around it. 28 */ 29 internal class DrawScale 30 private constructor( 31 private val scaleX: Float, 32 private val scaleY: Float, 33 private val pivot: Offset, 34 ) : InterpolatedPropertyTransformation<Scale> { 35 override val property = PropertyTransformation.Property.Scale 36 transformnull37 override fun PropertyTransformationScope.transform( 38 content: ContentKey, 39 element: ElementKey, 40 transition: TransitionState.Transition, 41 idleValue: Scale, 42 ): Scale { 43 return Scale(scaleX, scaleY, pivot) 44 } 45 46 class Factory(private val scaleX: Float, private val scaleY: Float, private val pivot: Offset) : 47 Transformation.Factory { createnull48 override fun create(): Transformation = DrawScale(scaleX, scaleY, pivot) 49 } 50 } 51