Added outlined text block for legibility in transparent views.
This commit is contained in:
271
osrs-toolbox/Controls/OutlinedTextBlock.cs
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271
osrs-toolbox/Controls/OutlinedTextBlock.cs
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using System.ComponentModel;
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using System.Globalization;
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using System.Windows.Documents;
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using System.Windows.Markup;
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using System.Windows.Media;
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using System.Windows;
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namespace osrs_toolbox
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{
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[ContentProperty("Text")]
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public class OutlinedTextBlock : FrameworkElement
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{
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public static readonly DependencyProperty FillProperty = DependencyProperty.Register(
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"Fill",
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typeof(Brush),
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typeof(OutlinedTextBlock),
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new FrameworkPropertyMetadata(Brushes.Black, FrameworkPropertyMetadataOptions.AffectsRender));
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public static readonly DependencyProperty StrokeProperty = DependencyProperty.Register(
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"Stroke",
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typeof(Brush),
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typeof(OutlinedTextBlock),
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new FrameworkPropertyMetadata(Brushes.Black, FrameworkPropertyMetadataOptions.AffectsRender));
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public static readonly DependencyProperty StrokeThicknessProperty = DependencyProperty.Register(
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"StrokeThickness",
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typeof(double),
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typeof(OutlinedTextBlock),
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new FrameworkPropertyMetadata(1d, FrameworkPropertyMetadataOptions.AffectsRender));
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public static readonly DependencyProperty FontFamilyProperty = TextElement.FontFamilyProperty.AddOwner(
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typeof(OutlinedTextBlock),
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new FrameworkPropertyMetadata(OnFormattedTextUpdated));
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public static readonly DependencyProperty FontSizeProperty = TextElement.FontSizeProperty.AddOwner(
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typeof(OutlinedTextBlock),
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new FrameworkPropertyMetadata(OnFormattedTextUpdated));
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public static readonly DependencyProperty FontStretchProperty = TextElement.FontStretchProperty.AddOwner(
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typeof(OutlinedTextBlock),
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new FrameworkPropertyMetadata(OnFormattedTextUpdated));
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public static readonly DependencyProperty FontStyleProperty = TextElement.FontStyleProperty.AddOwner(
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typeof(OutlinedTextBlock),
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new FrameworkPropertyMetadata(OnFormattedTextUpdated));
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public static readonly DependencyProperty FontWeightProperty = TextElement.FontWeightProperty.AddOwner(
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typeof(OutlinedTextBlock),
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new FrameworkPropertyMetadata(OnFormattedTextUpdated));
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public static readonly DependencyProperty TextProperty = DependencyProperty.Register(
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"Text",
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typeof(string),
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typeof(OutlinedTextBlock),
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new FrameworkPropertyMetadata(OnFormattedTextInvalidated));
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public static readonly DependencyProperty TextAlignmentProperty = DependencyProperty.Register(
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"TextAlignment",
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typeof(TextAlignment),
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typeof(OutlinedTextBlock),
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new FrameworkPropertyMetadata(OnFormattedTextUpdated));
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public static readonly DependencyProperty TextDecorationsProperty = DependencyProperty.Register(
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"TextDecorations",
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typeof(TextDecorationCollection),
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typeof(OutlinedTextBlock),
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new FrameworkPropertyMetadata(OnFormattedTextUpdated));
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public static readonly DependencyProperty TextTrimmingProperty = DependencyProperty.Register(
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"TextTrimming",
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typeof(TextTrimming),
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typeof(OutlinedTextBlock),
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new FrameworkPropertyMetadata(OnFormattedTextUpdated));
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public static readonly DependencyProperty TextWrappingProperty = DependencyProperty.Register(
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"TextWrapping",
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typeof(TextWrapping),
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typeof(OutlinedTextBlock),
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new FrameworkPropertyMetadata(TextWrapping.NoWrap, OnFormattedTextUpdated));
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private FormattedText formattedText;
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private Geometry textGeometry;
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public OutlinedTextBlock()
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{
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this.TextDecorations = new TextDecorationCollection();
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}
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public Brush Fill
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{
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get { return (Brush)GetValue(FillProperty); }
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set { SetValue(FillProperty, value); }
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}
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public FontFamily FontFamily
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{
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get { return (FontFamily)GetValue(FontFamilyProperty); }
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set { SetValue(FontFamilyProperty, value); }
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}
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[TypeConverter(typeof(FontSizeConverter))]
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public double FontSize
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{
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get { return (double)GetValue(FontSizeProperty); }
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set { SetValue(FontSizeProperty, value); }
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}
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public FontStretch FontStretch
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{
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get { return (FontStretch)GetValue(FontStretchProperty); }
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set { SetValue(FontStretchProperty, value); }
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}
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public FontStyle FontStyle
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{
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get { return (FontStyle)GetValue(FontStyleProperty); }
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set { SetValue(FontStyleProperty, value); }
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}
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public FontWeight FontWeight
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{
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get { return (FontWeight)GetValue(FontWeightProperty); }
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set { SetValue(FontWeightProperty, value); }
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}
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public Brush Stroke
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{
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get { return (Brush)GetValue(StrokeProperty); }
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set { SetValue(StrokeProperty, value); }
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}
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public double StrokeThickness
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{
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get { return (double)GetValue(StrokeThicknessProperty); }
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set { SetValue(StrokeThicknessProperty, value); }
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}
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public string Text
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{
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get { return (string)GetValue(TextProperty); }
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set { SetValue(TextProperty, value); }
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}
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public TextAlignment TextAlignment
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{
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get { return (TextAlignment)GetValue(TextAlignmentProperty); }
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set { SetValue(TextAlignmentProperty, value); }
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}
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public TextDecorationCollection TextDecorations
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{
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get { return (TextDecorationCollection)this.GetValue(TextDecorationsProperty); }
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set { this.SetValue(TextDecorationsProperty, value); }
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}
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public TextTrimming TextTrimming
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{
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get { return (TextTrimming)GetValue(TextTrimmingProperty); }
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set { SetValue(TextTrimmingProperty, value); }
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}
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public TextWrapping TextWrapping
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{
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get { return (TextWrapping)GetValue(TextWrappingProperty); }
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set { SetValue(TextWrappingProperty, value); }
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}
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protected override void OnRender(DrawingContext drawingContext)
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{
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this.EnsureGeometry();
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drawingContext.DrawGeometry(this.Fill, new Pen(this.Stroke, this.StrokeThickness), this.textGeometry);
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}
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protected override Size MeasureOverride(Size availableSize)
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{
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this.EnsureFormattedText();
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// constrain the formatted text according to the available size
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// the Math.Min call is important - without this constraint (which seems arbitrary, but is the maximum allowable text width), things blow up when availableSize is infinite in both directions
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// the Math.Max call is to ensure we don't hit zero, which will cause MaxTextHeight to throw
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this.formattedText.MaxTextWidth = Math.Min(3579139, availableSize.Width);
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this.formattedText.MaxTextHeight = Math.Max(0.0001d, availableSize.Height);
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// return the desired size
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return new Size(this.formattedText.Width, this.formattedText.Height);
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}
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protected override Size ArrangeOverride(Size finalSize)
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{
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this.EnsureFormattedText();
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// update the formatted text with the final size
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this.formattedText.MaxTextWidth = finalSize.Width;
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this.formattedText.MaxTextHeight = finalSize.Height;
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// need to re-generate the geometry now that the dimensions have changed
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this.textGeometry = null;
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return finalSize;
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}
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private static void OnFormattedTextInvalidated(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs e)
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{
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var outlinedTextBlock = (OutlinedTextBlock)dependencyObject;
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outlinedTextBlock.formattedText = null;
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outlinedTextBlock.textGeometry = null;
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outlinedTextBlock.InvalidateMeasure();
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outlinedTextBlock.InvalidateVisual();
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}
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private static void OnFormattedTextUpdated(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs e)
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{
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var outlinedTextBlock = (OutlinedTextBlock)dependencyObject;
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outlinedTextBlock.UpdateFormattedText();
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outlinedTextBlock.textGeometry = null;
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outlinedTextBlock.InvalidateMeasure();
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outlinedTextBlock.InvalidateVisual();
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}
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private void EnsureFormattedText()
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{
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if (this.formattedText != null || this.Text == null)
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{
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return;
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}
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this.formattedText = new FormattedText(
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this.Text,
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CultureInfo.CurrentUICulture,
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this.FlowDirection,
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new Typeface(this.FontFamily, this.FontStyle, this.FontWeight, FontStretches.Normal),
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this.FontSize,
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Brushes.Black);
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this.UpdateFormattedText();
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}
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private void UpdateFormattedText()
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{
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if (this.formattedText == null)
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{
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return;
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}
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this.formattedText.MaxLineCount = this.TextWrapping == TextWrapping.NoWrap ? 1 : int.MaxValue;
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this.formattedText.TextAlignment = this.TextAlignment;
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this.formattedText.Trimming = this.TextTrimming;
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this.formattedText.SetFontSize(this.FontSize);
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this.formattedText.SetFontStyle(this.FontStyle);
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this.formattedText.SetFontWeight(this.FontWeight);
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this.formattedText.SetFontFamily(this.FontFamily);
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this.formattedText.SetFontStretch(this.FontStretch);
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this.formattedText.SetTextDecorations(this.TextDecorations);
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}
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private void EnsureGeometry()
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{
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if (this.textGeometry != null)
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{
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return;
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}
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this.EnsureFormattedText();
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this.textGeometry = this.formattedText.BuildGeometry(new Point(0, 0));
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}
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}
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}
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