60 строки
1.4 KiB
C#
60 строки
1.4 KiB
C#
using System.ComponentModel;
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using Windows.UI.Xaml.Controls.Primitives;
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using Xamarin.Forms.Internals;
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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 ProgressBarRenderer : ViewRenderer<ProgressBar, Windows.UI.Xaml.Controls.ProgressBar>
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{
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protected override void Dispose(bool disposing)
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{
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if (disposing)
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{
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if (Control != null)
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{
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Control.ValueChanged -= ProgressBarOnValueChanged;
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}
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}
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base.Dispose(disposing);
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}
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protected override void OnElementChanged(ElementChangedEventArgs<ProgressBar> 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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var progressBar = new Windows.UI.Xaml.Controls.ProgressBar { Minimum = 0, Maximum = 1 };
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progressBar.ValueChanged += ProgressBarOnValueChanged;
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SetNativeControl(progressBar);
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}
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Control.Value = e.NewElement.Progress;
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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 == ProgressBar.ProgressProperty.PropertyName)
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Control.Value = Element.Progress;
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}
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void ProgressBarOnValueChanged(object sender, RangeBaseValueChangedEventArgs rangeBaseValueChangedEventArgs)
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{
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((IVisualElementController)Element)?.InvalidateMeasure(InvalidationTrigger.MeasureChanged);
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}
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}
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} |