feat: add generic thickness/cornerradius converter.

2023-07-28 00:34:06 +08:00
parent 4c597a5d1c
commit 45b2f5eb41
5 changed files with 191 additions and 11 deletions
--- a/src/Ursa/Converters/CornerRadiusConverter.cs
+++ b/src/Ursa/Converters/CornerRadiusConverter.cs
@@ -0,0 +1,90 @@
+using System.Globalization;
+using Avalonia;
+using Avalonia.Data.Converters;
+
+namespace Ursa.Converters;
+
+[Flags]
+public enum CornerRadiusPosition
+{
+    TopLeft = 1,
+    TopRight = 2,
+    BottomLeft = 4,
+    BottomRight = 8,
+    Top = 3,
+    Left = 5,
+    Right = 10,
+    Bottom = 12,
+}
+
+public class CornerRadiusIncludeConverter: IValueConverter
+{
+    public static CornerRadiusIncludeConverter TopLeft { get; } = new( CornerRadiusPosition.TopLeft );
+    public static CornerRadiusIncludeConverter TopRight { get; } = new( CornerRadiusPosition.TopRight );
+    public static CornerRadiusIncludeConverter BottomLeft { get; } = new( CornerRadiusPosition.BottomLeft );
+    public static CornerRadiusIncludeConverter BottomRight { get; } = new( CornerRadiusPosition.BottomRight );
+    public static CornerRadiusIncludeConverter Top { get; } = new( CornerRadiusPosition.Top );
+    public static CornerRadiusIncludeConverter Left { get; } = new( CornerRadiusPosition.Left );
+    public static CornerRadiusIncludeConverter Right { get; } = new( CornerRadiusPosition.Right );
+    public static CornerRadiusIncludeConverter Bottom { get; } = new( CornerRadiusPosition.Bottom );
+    
+    private readonly CornerRadiusPosition _position;
+    
+    public CornerRadiusIncludeConverter(CornerRadiusPosition position)
+    {
+        _position = position;
+    }
+    public object? Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
+    {
+        if (value is CornerRadius r)
+        {
+            double topLeft = _position.HasFlag(CornerRadiusPosition.TopLeft) ? r.TopLeft : 0;
+            double topRight = _position.HasFlag(CornerRadiusPosition.TopRight) ? r.TopRight : 0;
+            double bottomLeft = _position.HasFlag(CornerRadiusPosition.BottomLeft) ? r.BottomLeft : 0;
+            double bottomRight = _position.HasFlag(CornerRadiusPosition.BottomRight) ? r.BottomRight : 0;
+            return new CornerRadius(topLeft, topRight, bottomRight, bottomLeft);
+        }
+        return AvaloniaProperty.UnsetValue;
+    }
+
+    public object? ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture)
+    {
+        throw new NotImplementedException();
+    }
+}
+
+public class CornerRadiusExcludeConverter : IValueConverter
+{
+    public static CornerRadiusExcludeConverter TopLeft { get; } = new( CornerRadiusPosition.TopLeft );
+    public static CornerRadiusExcludeConverter TopRight { get; } = new( CornerRadiusPosition.TopRight );
+    public static CornerRadiusExcludeConverter BottomLeft { get; } = new( CornerRadiusPosition.BottomLeft );
+    public static CornerRadiusExcludeConverter BottomRight { get; } = new( CornerRadiusPosition.BottomRight );
+    public static CornerRadiusExcludeConverter Top { get; } = new( CornerRadiusPosition.Top );
+    public static CornerRadiusExcludeConverter Left { get; } = new( CornerRadiusPosition.Left );
+    public static CornerRadiusExcludeConverter Right { get; } = new( CornerRadiusPosition.Right );
+    public static CornerRadiusExcludeConverter Bottom { get; } = new( CornerRadiusPosition.Bottom );
+    
+    private readonly CornerRadiusPosition _position;
+    
+    public CornerRadiusExcludeConverter(CornerRadiusPosition position)
+    {
+        _position = position;
+    }
+    public object? Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
+    {
+        if (value is CornerRadius r)
+        {
+            double topLeft = _position.HasFlag(CornerRadiusPosition.TopLeft) ? 0 : r.TopLeft;
+            double topRight = _position.HasFlag(CornerRadiusPosition.TopRight) ? 0 : r.TopRight;
+            double bottomLeft = _position.HasFlag(CornerRadiusPosition.BottomLeft) ? 0 : r.BottomLeft;
+            double bottomRight = _position.HasFlag(CornerRadiusPosition.BottomRight) ? 0 : r.BottomRight;
+            return new CornerRadius(topLeft, topRight, bottomRight, bottomLeft);
+        }
+        return AvaloniaProperty.UnsetValue;
+    }
+
+    public object? ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture)
+    {
+        throw new NotImplementedException();
+    }
+}
--- a/src/Ursa/Converters/ThicknessConverter.cs
+++ b/src/Ursa/Converters/ThicknessConverter.cs
@@ -0,0 +1,91 @@
+using System.Globalization;
+using Avalonia;
+using Avalonia.Data.Converters;
+
+namespace Ursa.Converters;
+
+[Flags]
+public enum ThicknessPosition
+{
+    Left = 1,
+    Top = 2,
+    Right = 4,
+    Bottom = 8,
+    TopLeft = 3,
+    TopRight = 6,
+    BottomLeft = 9,
+    BottomRight = 12,
+}
+
+public class ThicknessExcludeConverter: IValueConverter
+{
+    public static ThicknessExcludeConverter Left { get; } = new( ThicknessPosition.Left );
+    public static ThicknessExcludeConverter Top { get; } = new( ThicknessPosition.Top );
+    public static ThicknessExcludeConverter Right { get; } = new( ThicknessPosition.Right );
+    public static ThicknessExcludeConverter Bottom { get; } = new( ThicknessPosition.Bottom );
+    public static ThicknessExcludeConverter TopLeft { get; } = new( ThicknessPosition.TopLeft );
+    public static ThicknessExcludeConverter TopRight { get; } = new( ThicknessPosition.TopRight );
+    public static ThicknessExcludeConverter BottomLeft { get; } = new( ThicknessPosition.BottomLeft );
+    public static ThicknessExcludeConverter BottomRight { get; } = new( ThicknessPosition.BottomRight );
+
+    private readonly ThicknessPosition _position;
+    public ThicknessExcludeConverter(ThicknessPosition position)
+    {
+        _position = position;
+    }
+    
+    public object? Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
+    {
+        if (value is Thickness t)
+        {
+            double left = _position.HasFlag(ThicknessPosition.Left) ?  0d: t.Left;
+            double top = _position.HasFlag(ThicknessPosition.Top) ? 0d : t.Top;
+            double right = _position.HasFlag(ThicknessPosition.Right) ? 0d : t.Right;
+            double bottom = _position.HasFlag(ThicknessPosition.Bottom) ? 0d : t.Bottom;
+
+            return new Thickness(left, top, right, bottom);
+        }
+        return AvaloniaProperty.UnsetValue;
+    }
+
+    public object? ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture)
+    {
+        throw new NotImplementedException();
+    }
+}
+
+public class ThicknessIncludeConverter: IValueConverter
+{
+    public static ThicknessIncludeConverter Left { get; } = new( ThicknessPosition.Left );
+    public static ThicknessIncludeConverter Top { get; } = new( ThicknessPosition.Top );
+    public static ThicknessIncludeConverter Right { get; } = new( ThicknessPosition.Right );
+    public static ThicknessIncludeConverter Bottom { get; } = new( ThicknessPosition.Bottom );
+    public static ThicknessIncludeConverter TopLeft { get; } = new( ThicknessPosition.TopLeft );
+    public static ThicknessIncludeConverter TopRight { get; } = new( ThicknessPosition.TopRight );
+    public static ThicknessIncludeConverter BottomLeft { get; } = new( ThicknessPosition.BottomLeft );
+    public static ThicknessIncludeConverter BottomRight { get; } = new( ThicknessPosition.BottomRight );
+
+    private readonly ThicknessPosition _position;
+    public ThicknessIncludeConverter(ThicknessPosition position)
+    {
+        _position = position;
+    }
+    
+    public object? Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
+    {
+        if (value is Thickness t)
+        {
+            var left = _position.HasFlag(ThicknessPosition.Left) ? t.Left : 0d;
+            var top = _position.HasFlag(ThicknessPosition.Top) ? t.Top : 0d;
+            var right = _position.HasFlag(ThicknessPosition.Right) ? t.Right : 0d;
+            var bottom = _position.HasFlag(ThicknessPosition.Bottom) ? t.Bottom : 0d;
+            return new Thickness(left, top, right, bottom);
+        }
+        return AvaloniaProperty.UnsetValue;
+    }
+
+    public object? ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture)
+    {
+        throw new NotImplementedException();
+    }
+}