robloo
4 years ago
committed by
GitHub
GitHub
19 changed files with 629 additions and 318 deletions
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using Avalonia.LogicalTree; |
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namespace Avalonia.Controls.Documents |
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{ |
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internal interface IInlineHost : ILogical |
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{ |
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void AddVisualChild(IControl child); |
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void Invalidate(); |
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} |
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} |
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using System.Collections.Generic; |
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using System.Text; |
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using Avalonia.Media; |
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using Avalonia.Media.TextFormatting; |
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using Avalonia.Metadata; |
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using Avalonia.Utilities; |
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namespace Avalonia.Controls.Documents |
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{ |
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/// <summary>
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/// InlineUIContainer - a wrapper for embedded UIElements in text
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/// flow content inline collections
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/// </summary>
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public class InlineUIContainer : Inline |
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{ |
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/// <summary>
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/// Defines the <see cref="Child"/> property.
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/// </summary>
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public static readonly StyledProperty<IControl> ChildProperty = |
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AvaloniaProperty.Register<InlineUIContainer, IControl>(nameof(Child)); |
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static InlineUIContainer() |
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{ |
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BaselineAlignmentProperty.OverrideDefaultValue<InlineUIContainer>(BaselineAlignment.Top); |
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} |
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/// <summary>
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/// Initializes a new instance of InlineUIContainer element.
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/// </summary>
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/// <remarks>
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/// The purpose of this element is to be a wrapper for UIElements
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/// when they are embedded into text flow - as items of
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/// InlineCollections.
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/// </remarks>
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public InlineUIContainer() |
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{ |
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} |
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/// <summary>
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/// Initializes an InlineBox specifying its child UIElement
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/// </summary>
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/// <param name="child">
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/// UIElement set as a child of this inline item
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/// </param>
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public InlineUIContainer(IControl child) |
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{ |
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Child = child; |
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} |
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/// <summary>
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/// The content spanned by this TextElement.
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/// </summary>
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[Content] |
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public IControl Child |
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{ |
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get => GetValue(ChildProperty); |
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set => SetValue(ChildProperty, value); |
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} |
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internal override void BuildTextRun(IList<TextRun> textRuns) |
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{ |
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if(InlineHost == null) |
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{ |
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return; |
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} |
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((ISetLogicalParent)Child).SetParent(InlineHost); |
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InlineHost.AddVisualChild(Child); |
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textRuns.Add(new InlineRun(Child, CreateTextRunProperties())); |
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} |
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internal override void AppendText(StringBuilder stringBuilder) |
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{ |
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} |
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private class InlineRun : DrawableTextRun |
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{ |
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public InlineRun(IControl control, TextRunProperties properties) |
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{ |
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Control = control; |
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Properties = properties; |
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} |
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public IControl Control { get; } |
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public override TextRunProperties? Properties { get; } |
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public override Size Size |
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{ |
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get |
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{ |
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if (!Control.IsMeasureValid) |
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{ |
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Control.Measure(Size.Infinity); |
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} |
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return Control.DesiredSize; |
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} |
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} |
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public override double Baseline |
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{ |
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get |
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{ |
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double baseline = Size.Height; |
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double baselineOffsetValue = Control.GetValue<double>(TextBlock.BaselineOffsetProperty); |
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if (!MathUtilities.IsZero(baselineOffsetValue)) |
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{ |
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baseline = baselineOffsetValue; |
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} |
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return -baseline; |
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} |
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} |
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public override void Draw(DrawingContext drawingContext, Point origin) |
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{ |
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Control.Arrange(new Rect(origin, Size)); |
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} |
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} |
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} |
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} |
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