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`IAvaloniaObject`, `IControl`, `ILayoutable`, `IPanel`, `IStyledElement`, `IVisual`.pull/9553/head
Steven Kirk
3 years ago
393 changed files with 2058 additions and 2504 deletions
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using System; |
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using Avalonia.Data; |
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using Avalonia.Metadata; |
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namespace Avalonia |
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{ |
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/// <summary>
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/// Interface for getting/setting <see cref="AvaloniaProperty"/> values on an object.
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/// </summary>
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[NotClientImplementable] |
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public interface IAvaloniaObject |
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{ |
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/// <summary>
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/// Raised when a <see cref="AvaloniaProperty"/> value changes on this object.
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/// </summary>
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event EventHandler<AvaloniaPropertyChangedEventArgs>? PropertyChanged; |
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/// <summary>
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/// Clears an <see cref="AvaloniaProperty"/>'s local value.
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/// </summary>
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/// <param name="property">The property.</param>
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void ClearValue(AvaloniaProperty property); |
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/// <summary>
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/// Gets a <see cref="AvaloniaProperty"/> value.
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/// </summary>
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/// <param name="property">The property.</param>
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/// <returns>The value.</returns>
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object? GetValue(AvaloniaProperty property); |
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/// <summary>
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/// Checks whether a <see cref="AvaloniaProperty"/> is animating.
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/// </summary>
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/// <param name="property">The property.</param>
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/// <returns>True if the property is animating, otherwise false.</returns>
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bool IsAnimating(AvaloniaProperty property); |
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/// <summary>
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/// Checks whether a <see cref="AvaloniaProperty"/> is set on this object.
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/// </summary>
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/// <param name="property">The property.</param>
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/// <returns>True if the property is set, otherwise false.</returns>
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bool IsSet(AvaloniaProperty property); |
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/// <summary>
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/// Sets a <see cref="AvaloniaProperty"/> value.
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/// </summary>
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/// <param name="property">The property.</param>
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/// <param name="value">The value.</param>
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/// <param name="priority">The priority of the value.</param>
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/// <returns>
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/// An <see cref="IDisposable"/> if setting the property can be undone, otherwise null.
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/// </returns>
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IDisposable? SetValue( |
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AvaloniaProperty property, |
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object? value, |
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BindingPriority priority = BindingPriority.LocalValue); |
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/// <summary>
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/// Binds a <see cref="AvaloniaProperty"/> to an observable.
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/// </summary>
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/// <param name="property">The property.</param>
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/// <param name="source">The observable.</param>
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/// <param name="priority">The priority of the binding.</param>
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/// <returns>
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/// A disposable which can be used to terminate the binding.
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/// </returns>
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IDisposable Bind( |
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AvaloniaProperty property, |
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IObservable<object?> source, |
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BindingPriority priority = BindingPriority.LocalValue); |
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/// <summary>
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/// Coerces the specified <see cref="AvaloniaProperty"/>.
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/// </summary>
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/// <param name="property">The property.</param>
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void CoerceValue(AvaloniaProperty property); |
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} |
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} |
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using System; |
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using System.ComponentModel; |
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using Avalonia.Controls; |
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using Avalonia.LogicalTree; |
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using Avalonia.Metadata; |
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using Avalonia.Styling; |
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namespace Avalonia |
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{ |
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[NotClientImplementable] |
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public interface IStyledElement : |
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IStyleable, |
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IStyleHost, |
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ILogical, |
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IResourceHost, |
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IDataContextProvider, |
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ISupportInitialize |
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{ |
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/// <summary>
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/// Occurs when the control has finished initialization.
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/// </summary>
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event EventHandler? Initialized; |
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/// <summary>
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/// Gets a value that indicates whether the element has finished initialization.
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/// </summary>
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bool IsInitialized { get; } |
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/// <summary>
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/// Gets or sets the control's styling classes.
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/// </summary>
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new Classes Classes { get; set; } |
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/// <summary>
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/// Gets the control's logical parent.
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/// </summary>
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IStyledElement? Parent { get; } |
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} |
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} |
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using Avalonia.Metadata; |
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using Avalonia.VisualTree; |
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namespace Avalonia.Layout |
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{ |
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/// <summary>
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/// Defines layout-related functionality for a control.
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/// </summary>
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[NotClientImplementable] |
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public interface ILayoutable : IVisual |
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{ |
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/// <summary>
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/// Gets the size that this element computed during the measure pass of the layout process.
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/// </summary>
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Size DesiredSize { get; } |
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/// <summary>
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/// Gets the width of the element.
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/// </summary>
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double Width { get; } |
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/// <summary>
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/// Gets the height of the element.
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/// </summary>
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double Height { get; } |
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/// <summary>
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/// Gets the minimum width of the element.
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/// </summary>
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double MinWidth { get; } |
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/// <summary>
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/// Gets the maximum width of the element.
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/// </summary>
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double MaxWidth { get; } |
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/// <summary>
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/// Gets the minimum height of the element.
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/// </summary>
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double MinHeight { get; } |
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/// <summary>
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/// Gets the maximum height of the element.
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/// </summary>
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double MaxHeight { get; } |
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/// <summary>
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/// Gets the margin around the element.
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/// </summary>
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Thickness Margin { get; } |
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/// <summary>
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/// Gets the element's preferred horizontal alignment in its parent.
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/// </summary>
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HorizontalAlignment HorizontalAlignment { get; } |
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/// <summary>
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/// Gets the element's preferred vertical alignment in its parent.
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/// </summary>
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VerticalAlignment VerticalAlignment { get; } |
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/// <summary>
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/// Gets a value indicating whether the control's layout measure is valid.
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/// </summary>
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bool IsMeasureValid { get; } |
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/// <summary>
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/// Gets a value indicating whether the control's layouts arrange is valid.
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/// </summary>
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bool IsArrangeValid { get; } |
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/// <summary>
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/// Gets the available size passed in the previous layout pass, if any.
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/// </summary>
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Size? PreviousMeasure { get; } |
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/// <summary>
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/// Gets the layout rect passed in the previous layout pass, if any.
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/// </summary>
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Rect? PreviousArrange { get; } |
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/// <summary>
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/// Creates the visual children of the control, if necessary
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/// </summary>
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void ApplyTemplate(); |
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/// <summary>
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/// Carries out a measure of the control.
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/// </summary>
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/// <param name="availableSize">The available size for the control.</param>
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void Measure(Size availableSize); |
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/// <summary>
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/// Arranges the control and its children.
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/// </summary>
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/// <param name="rect">The control's new bounds.</param>
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void Arrange(Rect rect); |
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/// <summary>
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/// Invalidates the measurement of the control and queues a new layout pass.
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/// </summary>
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void InvalidateMeasure(); |
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/// <summary>
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/// Invalidates the arrangement of the control and queues a new layout pass.
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/// </summary>
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void InvalidateArrange(); |
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/// <summary>
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/// Called when a child control's desired size changes.
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/// </summary>
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/// <param name="control">The child control.</param>
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void ChildDesiredSizeChanged(ILayoutable control); |
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/// <summary>
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/// Used by the <see cref="LayoutManager"/> to notify the control that its effective
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/// viewport is changed.
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/// </summary>
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/// <param name="e">The viewport information.</param>
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void EffectiveViewportChanged(EffectiveViewportChangedEventArgs e); |
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} |
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} |
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