64 lines
2.6 KiB
C#
64 lines
2.6 KiB
C#
using System.Globalization;
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using System.Windows;
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using System.Windows.Data;
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using System.Windows.Media;
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using DrawingColor = System.Drawing.Color;
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namespace CursorLang.Settings.Views;
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/// <summary>
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/// Shows an element when the value matches one of those listed in the parameter,
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/// separated by commas. Needed so that the anchor point settings and the screen
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/// settings are not shown at the same time.
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/// </summary>
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public sealed class EnumToVisibilityConverter : IValueConverter
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{
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public object Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
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{
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string? current = value?.ToString();
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bool matches = parameter?.ToString()?
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.Split(',', StringSplitOptions.TrimEntries | StringSplitOptions.RemoveEmptyEntries)
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.Any(expected => expected == current) ?? false;
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return matches ? Visibility.Visible : Visibility.Collapsed;
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}
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public object ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture) =>
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Binding.DoNothing;
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}
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/// <summary>
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/// A colour into a "#RRGGBB" notation: the alpha is not shown, because
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/// transparency is a separate setting.
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/// </summary>
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/// <remarks>
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/// The settings hold their colours as <see cref="System.Drawing.Color"/> — the agent
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/// reads the same file and must not be made to load WindowsBase for a colour. Turning
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/// them into something WPF can paint with is the job of this file and of
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/// <see cref="ColorToBrushConverter"/>, and of nothing else.
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/// </remarks>
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public sealed class ColorToHexConverter : IValueConverter
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{
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public object Convert(object? value, Type targetType, object? parameter, CultureInfo culture) =>
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value is DrawingColor color ? $"#{color.R:X2}{color.G:X2}{color.B:X2}" : string.Empty;
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public object ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture) =>
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Binding.DoNothing;
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}
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/// <summary>
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/// A colour into a brush — for the palette swatches in the list.
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/// </summary>
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public sealed class ColorToBrushConverter : IValueConverter
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{
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public object Convert(object? value, Type targetType, object? parameter, CultureInfo culture) =>
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value is DrawingColor color
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? new SolidColorBrush(Color.FromArgb(color.A, color.R, color.G, color.B))
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: Brushes.Transparent;
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public object ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture) =>
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value is SolidColorBrush brush
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? DrawingColor.FromArgb(brush.Color.A, brush.Color.R, brush.Color.G, brush.Color.B)
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: Binding.DoNothing;
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}
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