diff options
Diffstat (limited to 'Xamarin.Forms.Platform.MacOS/Renderers/ProgressBarRenderer.cs')
-rw-r--r-- | Xamarin.Forms.Platform.MacOS/Renderers/ProgressBarRenderer.cs | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/Xamarin.Forms.Platform.MacOS/Renderers/ProgressBarRenderer.cs b/Xamarin.Forms.Platform.MacOS/Renderers/ProgressBarRenderer.cs new file mode 100644 index 00000000..7b3c84ae --- /dev/null +++ b/Xamarin.Forms.Platform.MacOS/Renderers/ProgressBarRenderer.cs @@ -0,0 +1,66 @@ +using System.ComponentModel; +using AppKit; +using CoreImage; + +namespace Xamarin.Forms.Platform.MacOS +{ + public class ProgressBarRenderer : ViewRenderer<ProgressBar, NSProgressIndicator> + { + static CIColorPolynomial s_currentColorFilter; + static NSColor s_currentColor; + + protected override void OnElementChanged(ElementChangedEventArgs<ProgressBar> e) + { + if (e.NewElement == null) return; + if (Control == null) + SetNativeControl(new NSProgressIndicator + { + IsDisplayedWhenStopped = true, + Style = NSProgressIndicatorStyle.Bar, + MinValue = 0, + MaxValue = 1 + }); + UpdateProgress(); + } + + protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e) + { + base.OnElementPropertyChanged(sender, e); + + if (e.PropertyName == ProgressBar.ProgressProperty.PropertyName) + UpdateProgress(); + } + + protected override void SetBackgroundColor(Color color) + { + if (Control == null) + return; + + if (s_currentColorFilter == null && color.IsDefault) + return; + + if (color.IsDefault) + Control.ContentFilters = new CIFilter[0]; + + var newColor = Element.BackgroundColor.ToNSColor(); + if (Equals(s_currentColor, newColor)) + return; + + s_currentColor = newColor; + + s_currentColorFilter = new CIColorPolynomial + { + RedCoefficients = new CIVector(s_currentColor.RedComponent), + BlueCoefficients = new CIVector(s_currentColor.BlueComponent), + GreenCoefficients = new CIVector(s_currentColor.GreenComponent) + }; + + Control.ContentFilters = new CIFilter[] { s_currentColorFilter }; + } + + void UpdateProgress() + { + Control.DoubleValue = Element.Progress; + } + } +}
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