зеркало из https://github.com/DeGsoft/maui-linux.git
86 строки
2.1 KiB
C#
86 строки
2.1 KiB
C#
using System;
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using System.ComponentModel;
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using Windows.UI.Xaml;
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#if WINDOWS_UWP
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namespace Xamarin.Forms.Platform.UWP
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#else
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namespace Xamarin.Forms.Platform.WinRT
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#endif
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{
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public class ActivityIndicatorRenderer : ViewRenderer<ActivityIndicator, FormsProgressBar>
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{
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#if !WINDOWS_UWP
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Windows.UI.Xaml.Media.SolidColorBrush _resourceBrush;
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#endif
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object _foregroundDefault;
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protected override void OnElementChanged(ElementChangedEventArgs<ActivityIndicator> e)
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{
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base.OnElementChanged(e);
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if (e.NewElement != null)
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{
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if (Control == null)
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{
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SetNativeControl(new FormsProgressBar { IsIndeterminate = true, Style = Windows.UI.Xaml.Application.Current.Resources["FormsProgressBarStyle"] as Windows.UI.Xaml.Style });
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Control.Loaded += OnControlLoaded;
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}
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// UpdateColor() called when loaded to ensure we can cache dynamic default colors
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UpdateIsRunning();
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}
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}
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protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
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{
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base.OnElementPropertyChanged(sender, e);
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if (e.PropertyName == ActivityIndicator.IsRunningProperty.PropertyName || e.PropertyName == VisualElement.OpacityProperty.PropertyName)
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UpdateIsRunning();
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else if (e.PropertyName == ActivityIndicator.ColorProperty.PropertyName)
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UpdateColor();
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}
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void OnControlLoaded(object sender, RoutedEventArgs routedEventArgs)
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{
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#if !WINDOWS_UWP
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_resourceBrush = (Control.Resources["ProgressBarIndeterminateForegroundThemeBrush"] as Windows.UI.Xaml.Media.SolidColorBrush);
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_foregroundDefault = _resourceBrush.Color;
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#else
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_foregroundDefault = Control.GetForegroundCache();
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#endif
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UpdateColor();
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}
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void UpdateColor()
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{
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Color color = Element.Color;
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if (color.IsDefault)
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{
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#if !WINDOWS_UWP
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_resourceBrush.Color = (Windows.UI.Color) _foregroundDefault;
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#else
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Control.RestoreForegroundCache(_foregroundDefault);
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#endif
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}
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else
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{
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#if !WINDOWS_UWP
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_resourceBrush.Color = color.ToWindowsColor();
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#else
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Control.Foreground = color.ToBrush();
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#endif
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}
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}
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void UpdateIsRunning()
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{
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Control.ElementOpacity = Element.IsRunning ? Element.Opacity : 0;
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}
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}
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} |