■ 사용자 정의 애니메이션 확장 메소드를 만드는 방법을 보여준다.
▶ ViewExtension.cs
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namespace TestProject; /// <summary> /// 뷰 확장 /// </summary> public static class ViewExtension { //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Public #region 색상 변환하기 - ColorTo(element, fromColor, toColor, callbackAction, length, easing) /// <summary> /// 색상 변환하기 /// </summary> /// <param name="element">엘리먼트</param> /// <param name="fromColor">FROM 색상</param> /// <param name="toColor">TO 색상</param> /// <param name="callbackAction">콜백 액션</param> /// <param name="length">길이</param> /// <param name="easing">이징 함수</param> /// <returns>처리 결과 태스크</returns> public static Task<bool> ColorTo(this VisualElement element, Color fromColor, Color toColor, Action<Color> callbackAction, uint length = 250, Easing easing = null) { Func<double, Color> transformFunction = (t) => Color.FromRgba ( fromColor.Red + t * (toColor.Red - fromColor.Red ), fromColor.Green + t * (toColor.Green - fromColor.Green), fromColor.Blue + t * (toColor.Blue - fromColor.Blue ), fromColor.Alpha + t * (toColor.Alpha - fromColor.Alpha) ); return Animate(element, "ColorTo", transformFunction, callbackAction, length, easing); } #endregion #region 애니메이션 취소하기 - CancelAnimation(element) /// <summary> /// 애니메이션 취소하기 /// </summary> /// <param name="element">엘리먼트</param> public static void CancelAnimation(this VisualElement element) { element.AbortAnimation("ColorTo"); } #endregion //////////////////////////////////////////////////////////////////////////////// Public #region 애니메이션 만들기 - Animate(element, name, transformFunction, callbackAction, length, easing) /// <summary> /// 애니메이션 만들기 /// </summary> /// <param name="element">엘리먼트</param> /// <param name="name">명칭</param> /// <param name="transformFunction">변환 함수</param> /// <param name="callbackAction">콜백 액션</param> /// <param name="length">길이</param> /// <param name="easing">이징 함수</param> /// <returns>처리 결과 태스크</returns> private static Task<bool> Animate(VisualElement element, string name, Func<double, Color> transformFunction, Action<Color> callbackAction, uint length, Easing easing) { easing = easing ?? Easing.Linear; TaskCompletionSource<bool> taskCompletionSource = new TaskCompletionSource<bool>(); element.Animate<Color>(name, transformFunction, callbackAction, 16, length, easing, (v, c) => taskCompletionSource.SetResult(c)); return taskCompletionSource.Task; } #endregion } |
▶ MainPage.xaml
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<?xml version="1.0" encoding="utf-8" ?> <ContentPage x:Class="TestProject.MainPage" xmlns="http://schemas.microsoft.com/dotnet/2021/maui" xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"> <Grid x:Name="grid" Margin="10" RowDefinitions="*,Auto"> <Image x:Name="image" Grid.Row="0" WidthRequest="250" HeightRequest="310" Source="dotnet_bot.png" /> <Button x:Name="animationButton" Grid.Row="1" Margin="0,10,0,0" Text="애니메이션" /> </Grid> </ContentPage> |
▶ MainPage.xaml.cs
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namespace TestProject; /// <summary> /// 메인 페이지 /// </summary> public partial class MainPage : ContentPage { //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainPage() /// <summary> /// 생성자 /// </summary> public MainPage() { InitializeComponent(); this.animationButton.Clicked += animationButton_Clicked; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private #region 애니메이션 버튼 클릭시 처리하기 - fadeInButton_Clicked(sender, e) /// <summary> /// 애니메이션 버튼 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private async void animationButton_Clicked(object sender, EventArgs e) { await this.grid.ColorTo(Color.FromRgb(0, 0, 0), Color.FromRgb(255, 255, 255), c => this.grid.BackgroundColor = c, 5000); } #endregion } |
