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Add a SKLottieView to play Lottie animations (#118)
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25 changes: 25 additions & 0 deletions
25
samples/Forms/SkiaSharpDemo/Converters/TimeSpanToDoubleConverter.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,25 @@ | ||
| using System; | ||
| using System.Globalization; | ||
| using Xamarin.Forms; | ||
|
|
||
| namespace SkiaSharpDemo.Converters | ||
| { | ||
| public class TimeSpanToDoubleConverter : IValueConverter | ||
| { | ||
| public object Convert(object value, Type targetType, object parameter, CultureInfo culture) => | ||
| value switch | ||
| { | ||
| TimeSpan ts => ts.TotalMilliseconds == 0 && parameter is not null | ||
| ? double.Parse(parameter.ToString()) | ||
| : ts.TotalMilliseconds, | ||
| _ => throw new ArgumentException("Value was not a TimeSpan.", nameof(value)), | ||
| }; | ||
|
|
||
| public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) => | ||
| value switch | ||
| { | ||
| double d => TimeSpan.FromMilliseconds(d), | ||
| _ => throw new ArgumentException("Value was not a double.", nameof(value)), | ||
| }; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,45 @@ | ||
| <ContentPage xmlns="http://xamarin.com/schemas/2014/forms" | ||
| xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" | ||
| xmlns:controls="clr-namespace:SkiaSharp.Extended.UI.Controls;assembly=SkiaSharp.Extended.UI" | ||
| xmlns:views="clr-namespace:SkiaSharpDemo.Views" | ||
| x:Class="SkiaSharpDemo.Demos.LottiePage" | ||
| Title="Lottie"> | ||
|
|
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| <Grid RowDefinitions="*,Auto"> | ||
|
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| <controls:SKLottieView x:Name="lottieView" | ||
| Source="Lottie/trophy.json" | ||
| Duration="{Binding Duration}" | ||
| Progress="{Binding Progress}" | ||
| IsRunning="{Binding IsBusy}"/> | ||
|
|
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| <BoxView Color="Green" Opacity="0.5" CornerRadius="12" | ||
| WidthRequest="25" HeightRequest="24" Margin="24" | ||
| HorizontalOptions="End" VerticalOptions="Start" | ||
| IsVisible="{Binding IsComplete, Source={Reference lottieView}}" /> | ||
|
|
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| <StackLayout Spacing="12" Padding="12" Grid.Row="1"> | ||
|
|
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| <Slider Minimum="0" | ||
| Maximum="{Binding Duration, Converter={StaticResource TimeSpanToDouble}, ConverterParameter=1}" | ||
| Value="{Binding Progress, Converter={StaticResource TimeSpanToDouble}}" /> | ||
|
|
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| <Grid ColumnDefinitions="*,*" Margin="0,-12,0,0"> | ||
| <Label Grid.Column="0" | ||
| Text="{Binding Progress, StringFormat='{}{0:mm\\:ss\\.fff}'}" /> | ||
| <Label Grid.Column="1" HorizontalOptions="End" | ||
| Text="{Binding Duration, StringFormat='{}{0:mm\\:ss\\.fff}'}" /> | ||
| </Grid> | ||
|
|
||
| <StackLayout Orientation="Horizontal" HorizontalOptions="Center" Spacing="6"> | ||
| <Button Text="Reset" Command="{Binding ResetCommand}" /> | ||
| <Button Text="-100ms" Command="{Binding StepCommand}" CommandParameter="-100" /> | ||
| <Button Text="Play/Pause" Command="{Binding PlayPauseCommand}" /> | ||
| <Button Text="+100ms" Command="{Binding StepCommand}" CommandParameter="100" /> | ||
| <Button Text="End" Command="{Binding EndCommand}" /> | ||
| </StackLayout> | ||
|
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| </StackLayout> | ||
| </Grid> | ||
|
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| </ContentPage> |
68 changes: 68 additions & 0 deletions
68
samples/Forms/SkiaSharpDemo/Demos/Lottie/LottiePage.xaml.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,68 @@ | ||
| using System; | ||
| using System.Windows.Input; | ||
| using System.Collections.Generic; | ||
| using SkiaSharp.Extended.UI.Controls; | ||
| using Xamarin.Forms; | ||
|
|
||
| namespace SkiaSharpDemo.Demos | ||
| { | ||
| public partial class LottiePage : ContentPage | ||
| { | ||
| private TimeSpan duration; | ||
| private TimeSpan progress; | ||
|
|
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| public LottiePage() | ||
| { | ||
| InitializeComponent(); | ||
|
|
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| ResetCommand = new Command(OnReset); | ||
| StepCommand = new Command<string>(OnStep); | ||
| EndCommand = new Command(OnEnd); | ||
| PlayPauseCommand = new Command(OnPlayPause); | ||
|
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| IsBusy = true; | ||
|
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| BindingContext = this; | ||
| } | ||
|
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| public TimeSpan Duration | ||
| { | ||
| get => duration; | ||
| set | ||
| { | ||
| duration = value; | ||
| OnPropertyChanged(); | ||
| } | ||
| } | ||
|
|
||
| public TimeSpan Progress | ||
| { | ||
| get => progress; | ||
| set | ||
| { | ||
| progress = value; | ||
| OnPropertyChanged(); | ||
| } | ||
| } | ||
|
|
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| public ICommand ResetCommand { get; } | ||
|
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| public ICommand StepCommand { get; } | ||
|
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| public ICommand PlayPauseCommand { get; } | ||
|
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| public ICommand EndCommand { get; } | ||
|
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| private void OnReset() => | ||
| Progress = TimeSpan.Zero; | ||
|
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| private void OnStep(string step) => | ||
| Progress += TimeSpan.FromMilliseconds(int.Parse(step)); | ||
|
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| private void OnEnd() => | ||
| Progress = Duration; | ||
|
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| private void OnPlayPause() => | ||
| IsBusy = !IsBusy; | ||
| } | ||
| } |
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22 changes: 22 additions & 0 deletions
22
samples/Maui/SkiaSharpDemo/Converters/TimeSpanToDoubleConverter.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,22 @@ | ||
| using System.Globalization; | ||
|
|
||
| namespace SkiaSharpDemo.Converters; | ||
|
|
||
| public class TimeSpanToDoubleConverter : IValueConverter | ||
| { | ||
| public object Convert(object value, Type targetType, object parameter, CultureInfo culture) => | ||
| value switch | ||
| { | ||
| TimeSpan ts => ts.TotalMilliseconds == 0 && parameter is not null | ||
| ? double.Parse(parameter.ToString()) | ||
| : ts.TotalMilliseconds, | ||
| _ => throw new ArgumentException("Value was not a TimeSpan.", nameof(value)), | ||
| }; | ||
|
|
||
| public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) => | ||
| value switch | ||
| { | ||
| double d => TimeSpan.FromMilliseconds(d), | ||
| _ => throw new ArgumentException("Value was not a double.", nameof(value)), | ||
| }; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,45 @@ | ||
| <ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui" | ||
| xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" | ||
| xmlns:controls="clr-namespace:SkiaSharp.Extended.UI.Controls;assembly=SkiaSharp.Extended.UI" | ||
| xmlns:views="clr-namespace:SkiaSharpDemo.Views" | ||
| x:Class="SkiaSharpDemo.Demos.LottiePage" | ||
| Title="Lottie"> | ||
|
|
||
| <Grid RowDefinitions="*,Auto"> | ||
|
|
||
| <controls:SKLottieView x:Name="lottieView" | ||
| Source="Lottie/trophy.json" | ||
| Duration="{Binding Duration}" | ||
| Progress="{Binding Progress}" | ||
| IsRunning="{Binding IsBusy}"/> | ||
|
|
||
| <BoxView Color="Green" Opacity="0.5" CornerRadius="12" | ||
| WidthRequest="25" HeightRequest="24" Margin="24" | ||
| HorizontalOptions="End" VerticalOptions="Start" | ||
| IsVisible="{Binding IsComplete, Source={Reference lottieView}}" /> | ||
|
|
||
| <VerticalStackLayout Spacing="12" Padding="12" Grid.Row="1"> | ||
|
|
||
| <Slider Minimum="0" | ||
| Maximum="{Binding Duration, Converter={StaticResource TimeSpanToDouble}, ConverterParameter=1}" | ||
| Value="{Binding Progress, Converter={StaticResource TimeSpanToDouble}}" /> | ||
|
|
||
| <Grid ColumnDefinitions="*,*" Margin="0,-12,0,0"> | ||
| <Label Grid.Column="0" | ||
| Text="{Binding Progress, StringFormat='{}{0:mm\\:ss\\.fff}'}" /> | ||
| <Label Grid.Column="1" HorizontalOptions="End" | ||
| Text="{Binding Duration, StringFormat='{}{0:mm\\:ss\\.fff}'}" /> | ||
| </Grid> | ||
|
|
||
| <HorizontalStackLayout HorizontalOptions="Center" Spacing="6"> | ||
| <Button Text="Reset" Command="{Binding ResetCommand}" /> | ||
| <Button Text="-100ms" Command="{Binding StepCommand}" CommandParameter="-100" /> | ||
| <Button Text="Play/Pause" Command="{Binding PlayPauseCommand}" /> | ||
| <Button Text="+100ms" Command="{Binding StepCommand}" CommandParameter="100" /> | ||
| <Button Text="End" Command="{Binding EndCommand}" /> | ||
| </HorizontalStackLayout> | ||
|
|
||
| </VerticalStackLayout> | ||
| </Grid> | ||
|
|
||
| </ContentPage> |
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