55 lines
2.0 KiB
C#
55 lines
2.0 KiB
C#
using Avalonia;
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using Avalonia.Controls;
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using Avalonia.Controls.Primitives;
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using Avalonia.Data;
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using Avalonia.Data.Converters;
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using Avalonia.Input;
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using Avalonia.Layout;
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using Avalonia.Media;
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using Ursa.Controls.Shapes;
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namespace Ursa.Controls;
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public class DisabledAdorner
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{
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public static readonly AttachedProperty<bool> IsEnabledProperty =
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AvaloniaProperty.RegisterAttached<DisabledAdorner, InputElement, bool>("IsEnabled");
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public static void SetIsEnabled(InputElement obj, bool value) => obj.SetValue(IsEnabledProperty, value);
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public static bool GetIsEnabled(InputElement obj) => obj.GetValue(IsEnabledProperty);
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public static readonly AttachedProperty<object?> DisabledTipProperty =
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AvaloniaProperty.RegisterAttached<DisabledAdorner, InputElement, object?>("DisabledTip");
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public static void SetDisabledTip(InputElement obj, object? value) => obj.SetValue(DisabledTipProperty, value);
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public static object? GetDisabledTip(InputElement obj) => obj.GetValue(DisabledTipProperty);
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static DisabledAdorner()
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{
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IsEnabledProperty.Changed.AddClassHandler<InputElement, bool>(OnIsEnabledChanged);
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}
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private static void OnIsEnabledChanged(InputElement arg1, AvaloniaPropertyChangedEventArgs<bool> arg2)
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{
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if (arg2.NewValue.Value)
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{
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var pureRectangle = new Border()
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{
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Background = Brushes.Transparent,
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IsHitTestVisible = true,
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HorizontalAlignment = HorizontalAlignment.Stretch,
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VerticalAlignment = VerticalAlignment.Stretch,
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Cursor = new Cursor(StandardCursorType.No),
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[!ToolTip.TipProperty] = arg1[!DisabledTipProperty],
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};
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var binding = arg1.GetObservable(InputElement.IsEnabledProperty, converter: (a) => !a).ToBinding();
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pureRectangle.Bind(Visual.IsVisibleProperty, binding);
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AdornerLayer.SetAdorner(arg1, pureRectangle);
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}
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else
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{
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AdornerLayer.SetAdorner(arg1, null);
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}
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}
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} |