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+using System;
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+using System.Collections.Generic;
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+using System.ComponentModel;
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+using System.Diagnostics;
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+using System.Linq;
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+using System.Reflection;
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+using NStack;
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+
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+namespace Terminal.Gui {
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+ /// <summary>
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+ /// Determines the LayoutStyle for a <see cref="View"/>, if Absolute, during <see cref="View.LayoutSubviews"/>, the
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+ /// value from the <see cref="View.Frame"/> will be used, if the value is Computed, then <see cref="View.Frame"/>
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+ /// will be updated from the X, Y <see cref="Pos"/> objects and the Width and Height <see cref="Dim"/> objects.
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+ /// </summary>
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+ public enum LayoutStyle {
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+ /// <summary>
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+ /// The position and size of the view are based <see cref="View.Frame"/>.
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+ /// </summary>
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+ Absolute,
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+
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+ /// <summary>
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+ /// The position and size of the view will be computed based on
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+ /// <see cref="View.X"/>, <see cref="View.Y"/>, <see cref="View.Width"/>, and <see cref="View.Height"/>. <see cref="View.Frame"/> will
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+ /// provide the absolute computed values.
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+ /// </summary>
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+ Computed
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+ }
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+
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+ public partial class View {
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+
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+ // The frame for the object. Superview relative.
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+ Rect _frame;
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+
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+ /// <summary>
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+ /// Gets or sets the frame for the view. The frame is relative to the view's container (<see cref="SuperView"/>).
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+ /// </summary>
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+ /// <value>The frame.</value>
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+ /// <remarks>
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+ /// <para>
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+ /// Change the Frame when using the <see cref="Terminal.Gui.LayoutStyle.Absolute"/> layout style to move or resize views.
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+ /// </para>
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+ /// <para>
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+ /// Altering the Frame of a view will trigger the redrawing of the
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+ /// view as well as the redrawing of the affected regions of the <see cref="SuperView"/>.
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+ /// </para>
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+ /// </remarks>
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+ public virtual Rect Frame {
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+ get => _frame;
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+ set {
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+ _frame = new Rect (value.X, value.Y, Math.Max (value.Width, 0), Math.Max (value.Height, 0));
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+ if (IsInitialized || LayoutStyle == LayoutStyle.Absolute) {
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+ LayoutFrames ();
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+ TextFormatter.Size = GetSizeNeededForTextAndHotKey ();
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+ SetNeedsLayout ();
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+ SetNeedsDisplay ();
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+ }
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+ }
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+ }
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+
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+ /// <summary>
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+ /// The Thickness that separates a View from other SubViews of the same SuperView.
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+ /// The Margin is not part of the View's content and is not clipped by the View's Clip Area.
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+ /// </summary>
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+ public Frame Margin { get; private set; }
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+
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+ /// <summary>
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+ /// Thickness where a visual border (drawn using line-drawing glyphs) and the Title are drawn.
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+ /// The Border expands inward; in other words if `Border.Thickness.Top == 2` the border and
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+ /// title will take up the first row and the second row will be filled with spaces.
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+ /// The Border is not part of the View's content and is not clipped by the View's `ClipArea`.
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+ /// </summary>
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+ /// <remarks>
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+ /// <see cref="BorderStyle"/> provides a simple helper for turning a simple border frame on or off.
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+ /// </remarks>
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+ public Frame Border { get; private set; }
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+
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+ /// <summary>
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+ /// Gets or sets whether the view has a one row/col thick border.
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+ /// </summary>
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+ /// <remarks>
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+ /// <para>
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+ /// This is a helper for manipulating the view's <see cref="Border"/>. Setting this property to any value other than
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+ /// <see cref="LineStyle.None"/> is equivalent to setting <see cref="Border"/>'s <see cref="Frame.Thickness"/>
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+ /// to `1` and <see cref="BorderStyle"/> to the value.
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+ /// </para>
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+ /// <para>
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+ /// Setting this property to <see cref="LineStyle.None"/> is equivalent to setting <see cref="Border"/>'s <see cref="Frame.Thickness"/>
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+ /// to `0` and <see cref="BorderStyle"/> to <see cref="LineStyle.None"/>.
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+ /// </para>
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+ /// <para>
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+ /// For more advanced customization of the view's border, manipulate see <see cref="Border"/> directly.
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+ /// </para>
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+ /// </remarks>
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+ public LineStyle BorderStyle {
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+ get {
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+ return Border?.BorderStyle ?? LineStyle.None;
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+ }
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+ set {
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+ if (Border == null) {
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+ throw new InvalidOperationException ("Border is null; this is likely a bug.");
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+ }
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+ if (value != LineStyle.None) {
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+ Border.Thickness = new Thickness (1);
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+ } else {
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+ Border.Thickness = new Thickness (0);
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+ }
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+ Border.BorderStyle = value;
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+ LayoutFrames ();
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+ SetNeedsLayout ();
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+ }
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+ }
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+
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+ /// <summary>
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+ /// Means the Thickness inside of an element that offsets the `Content` from the Border.
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+ /// Padding is `{0, 0, 0, 0}` by default. Padding is not part of the View's content and is not clipped by the View's `ClipArea`.
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+ /// </summary>
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+ /// <remarks>
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+ /// (NOTE: in v1 `Padding` is OUTSIDE of the `Border`).
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+ /// </remarks>
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+ public Frame Padding { get; private set; }
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+
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+ /// <summary>
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+ /// Helper to get the total thickness of the <see cref="Margin"/>, <see cref="Border"/>, and <see cref="Padding"/>.
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+ /// </summary>
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+ /// <returns>A thickness that describes the sum of the Frames' thicknesses.</returns>
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+ public Thickness GetFramesThickness ()
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+ {
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+ var left = Margin.Thickness.Left + Border.Thickness.Left + Padding.Thickness.Left;
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+ var top = Margin.Thickness.Top + Border.Thickness.Top + Padding.Thickness.Top;
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+ var right = Margin.Thickness.Right + Border.Thickness.Right + Padding.Thickness.Right;
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+ var bottom = Margin.Thickness.Bottom + Border.Thickness.Bottom + Padding.Thickness.Bottom;
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+ return new Thickness (left, top, right, bottom);
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+ }
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+
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+ /// <summary>
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+ /// Helper to get the X and Y offset of the Bounds from the Frame. This is the sum of the Left and Top properties of
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+ /// <see cref="Margin"/>, <see cref="Border"/> and <see cref="Padding"/>.
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+ /// </summary>
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+ public Point GetBoundsOffset () => new Point (Padding?.Thickness.GetInside (Padding.Frame).X ?? 0, Padding?.Thickness.GetInside (Padding.Frame).Y ?? 0);
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+
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+ /// <summary>
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+ /// Creates the view's <see cref="Frame"/> objects. This internal method is overridden by Frame to do nothing
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+ /// to prevent recursion during View construction.
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+ /// </summary>
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+ internal virtual void CreateFrames ()
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+ {
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+ void ThicknessChangedHandler (object sender, EventArgs e)
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+ {
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+ LayoutFrames ();
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+ SetNeedsLayout ();
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+ SetNeedsDisplay ();
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+ }
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+
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+ if (Margin != null) {
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+ Margin.ThicknessChanged -= ThicknessChangedHandler;
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+ Margin.Dispose ();
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+ }
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+ Margin = new Frame () { Id = "Margin", Thickness = new Thickness (0) };
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+ Margin.ThicknessChanged += ThicknessChangedHandler;
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+ Margin.Parent = this;
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+
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+ if (Border != null) {
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+ Border.ThicknessChanged -= ThicknessChangedHandler;
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+ Border.Dispose ();
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+ }
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+ Border = new Frame () { Id = "Border", Thickness = new Thickness (0) };
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+ Border.ThicknessChanged += ThicknessChangedHandler;
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+ Border.Parent = this;
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+
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+ // TODO: Create View.AddAdornment
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+
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+ if (Padding != null) {
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+ Padding.ThicknessChanged -= ThicknessChangedHandler;
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+ Padding.Dispose ();
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+ }
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+ Padding = new Frame () { Id = "Padding", Thickness = new Thickness (0) };
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+ Padding.ThicknessChanged += ThicknessChangedHandler;
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+ Padding.Parent = this;
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+ }
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+
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+ LayoutStyle _layoutStyle;
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+
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+ /// <summary>
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+ /// Controls how the View's <see cref="Frame"/> is computed during the LayoutSubviews method, if the style is set to
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+ /// <see cref="Terminal.Gui.LayoutStyle.Absolute"/>,
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+ /// LayoutSubviews does not change the <see cref="Frame"/>. If the style is <see cref="Terminal.Gui.LayoutStyle.Computed"/>
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+ /// the <see cref="Frame"/> is updated using
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+ /// the <see cref="X"/>, <see cref="Y"/>, <see cref="Width"/>, and <see cref="Height"/> properties.
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+ /// </summary>
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+ /// <value>The layout style.</value>
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+ public LayoutStyle LayoutStyle {
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+ get => _layoutStyle;
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+ set {
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+ _layoutStyle = value;
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+ SetNeedsLayout ();
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+ }
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+ }
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+
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+ /// <summary>
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+ /// The View-relative rectangle where View content is displayed. SubViews are positioned relative to
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+ /// Bounds.<see cref="Rect.Location">Location</see> (which is always (0, 0)) and <see cref="Redraw(Rect)"/> clips drawing to
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+ /// Bounds.<see cref="Rect.Size">Size</see>.
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+ /// </summary>
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+ /// <value>The bounds.</value>
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+ /// <remarks>
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+ /// <para>
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+ /// The <see cref="Rect.Location"/> of Bounds is always (0, 0). To obtain the offset of the Bounds from the Frame use
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+ /// <see cref="GetBoundsOffset"/>.
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+ /// </para>
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+ /// </remarks>
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+ public virtual Rect Bounds {
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+ get {
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+#if DEBUG
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+ if (LayoutStyle == LayoutStyle.Computed && !IsInitialized) {
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+ Debug.WriteLine ($"WARNING: Bounds is being accessed before the View has been initialized. This is likely a bug. View: {this}");
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+ }
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+#endif // DEBUG
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+ var frameRelativeBounds = Padding?.Thickness.GetInside (Padding.Frame) ?? new Rect (default, Frame.Size);
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+ return new Rect (default, frameRelativeBounds.Size);
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+ }
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+ set {
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+ // BUGBUG: Margin etc.. can be null (if typeof(Frame))
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+ Frame = new Rect (Frame.Location,
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+ new Size (
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+ value.Size.Width + Margin.Thickness.Horizontal + Border.Thickness.Horizontal + Padding.Thickness.Horizontal,
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+ value.Size.Height + Margin.Thickness.Vertical + Border.Thickness.Vertical + Padding.Thickness.Vertical
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+ )
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+ );
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+ }
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+ }
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+
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+ // Diagnostics to highlight when X or Y is read before the view has been initialized
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+ private Pos VerifyIsIntialized (Pos pos)
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+ {
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+#if DEBUG
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+ if (LayoutStyle == LayoutStyle.Computed && (!IsInitialized)) {
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+ Debug.WriteLine ($"WARNING: \"{this}\" has not been initialized; position is indeterminate {pos}. This is likely a bug.");
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+ }
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+#endif // DEBUG
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+ return pos;
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+ }
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+
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+ // Diagnostics to highlight when Width or Height is read before the view has been initialized
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+ private Dim VerifyIsIntialized (Dim dim)
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+ {
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+#if DEBUG
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+ if (LayoutStyle == LayoutStyle.Computed && (!IsInitialized)) {
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+ Debug.WriteLine ($"WARNING: \"{this}\" has not been initialized; dimension is indeterminate: {dim}. This is likely a bug.");
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+ }
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+#endif // DEBUG
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+ return dim;
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+ }
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+
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+ Pos _x, _y;
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+
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+ /// <summary>
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+ /// Gets or sets the X position for the view (the column). Only used if the <see cref="LayoutStyle"/> is <see cref="Terminal.Gui.LayoutStyle.Computed"/>.
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+ /// </summary>
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+ /// <value>The X Position.</value>
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+ /// <remarks>
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+ /// If <see cref="LayoutStyle"/> is <see cref="Terminal.Gui.LayoutStyle.Absolute"/> changing this property has no effect and its value is indeterminate.
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+ /// </remarks>
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+ public Pos X {
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+ get => VerifyIsIntialized (_x);
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+ set {
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+ if (ForceValidatePosDim && !ValidatePosDim (_x, value)) {
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+ throw new ArgumentException ();
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+ }
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+
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+ _x = value;
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+
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+ OnResizeNeeded ();
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+ }
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+ }
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+
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+ /// <summary>
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+ /// Gets or sets the Y position for the view (the row). Only used if the <see cref="LayoutStyle"/> is <see cref="Terminal.Gui.LayoutStyle.Computed"/>.
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+ /// </summary>
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+ /// <value>The y position (line).</value>
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+ /// <remarks>
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+ /// If <see cref="LayoutStyle"/> is <see cref="Terminal.Gui.LayoutStyle.Absolute"/> changing this property has no effect and its value is indeterminate.
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+ /// </remarks>
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+ public Pos Y {
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+ get => VerifyIsIntialized (_y);
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+ set {
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+ if (ForceValidatePosDim && !ValidatePosDim (_y, value)) {
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+ throw new ArgumentException ();
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+ }
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+
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+ _y = value;
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+
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+ OnResizeNeeded ();
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+ }
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+ }
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+ Dim _width, _height;
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+
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+ /// <summary>
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+ /// Gets or sets the width of the view. Only used the <see cref="LayoutStyle"/> is <see cref="Terminal.Gui.LayoutStyle.Computed"/>.
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+ /// </summary>
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+ /// <value>The width.</value>
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+ /// <remarks>
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+ /// If <see cref="LayoutStyle"/> is <see cref="Terminal.Gui.LayoutStyle.Absolute"/> changing this property has no effect and its value is indeterminate.
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+ /// </remarks>
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+ public Dim Width {
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+ get => VerifyIsIntialized (_width);
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+ set {
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+ if (ForceValidatePosDim && !ValidatePosDim (_width, value)) {
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+ throw new ArgumentException ("ForceValidatePosDim is enabled", nameof (Width));
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+ }
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+
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+ _width = value;
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+
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+ if (ForceValidatePosDim) {
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+ var isValidNewAutSize = AutoSize && IsValidAutoSizeWidth (_width);
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+
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+ if (IsAdded && AutoSize && !isValidNewAutSize) {
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+ throw new InvalidOperationException ("Must set AutoSize to false before set the Width.");
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+ }
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+ }
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+ OnResizeNeeded ();
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+ }
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+ }
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+
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+ /// <summary>
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+ /// Gets or sets the height of the view. Only used the <see cref="LayoutStyle"/> is <see cref="Terminal.Gui.LayoutStyle.Computed"/>.
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+ /// </summary>
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+ /// <value>The height.</value>
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+ /// If <see cref="LayoutStyle"/> is <see cref="Terminal.Gui.LayoutStyle.Absolute"/> changing this property has no effect and its value is indeterminate.
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+ public Dim Height {
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+ get => VerifyIsIntialized (_height);
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+ set {
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+ if (ForceValidatePosDim && !ValidatePosDim (_height, value)) {
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+ throw new ArgumentException ("ForceValidatePosDim is enabled", nameof (Height));
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+ }
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+
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+ _height = value;
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+
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+ if (ForceValidatePosDim) {
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+ var isValidNewAutSize = AutoSize && IsValidAutoSizeHeight (_height);
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+
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+ if (IsAdded && AutoSize && !isValidNewAutSize) {
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+ throw new InvalidOperationException ("Must set AutoSize to false before set the Height.");
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+ }
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+ }
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+ OnResizeNeeded ();
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+ }
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+ }
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+
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+ /// <summary>
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+ /// Forces validation with <see cref="Terminal.Gui.LayoutStyle.Computed"/> layout
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+ /// to avoid breaking the <see cref="Pos"/> and <see cref="Dim"/> settings.
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+ /// </summary>
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+ public bool ForceValidatePosDim { get; set; }
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+
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+ bool ValidatePosDim (object oldValue, object newValue)
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+ {
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+ if (!IsInitialized || _layoutStyle == LayoutStyle.Absolute || oldValue == null || oldValue.GetType () == newValue.GetType () || this is Toplevel) {
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+ return true;
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+ }
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+ if (_layoutStyle == LayoutStyle.Computed) {
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+ if (oldValue.GetType () != newValue.GetType () && !(newValue is Pos.PosAbsolute || newValue is Dim.DimAbsolute)) {
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+ return true;
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+ }
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+ }
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+ return false;
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+ }
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+
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+ // BUGBUG: This API is broken - It should be renamed to `GetMinimumBoundsForFrame and
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+ // should not assume Frame.Height == Bounds.Height
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+ /// <summary>
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+ /// Gets the minimum dimensions required to fit the View's <see cref="Text"/>, factoring in <see cref="TextDirection"/>.
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+ /// </summary>
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+ /// <param name="size">The minimum dimensions required.</param>
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+ /// <returns><see langword="true"/> if the dimensions fit within the View's <see cref="Bounds"/>, <see langword="false"/> otherwise.</returns>
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+ /// <remarks>
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+ /// Always returns <see langword="false"/> if <see cref="AutoSize"/> is <see langword="true"/> or
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+ /// if <see cref="Height"/> (Horizontal) or <see cref="Width"/> (Vertical) are not not set or zero.
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+ /// Does not take into account word wrapping.
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+ /// </remarks>
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+ public bool GetMinimumBounds (out Size size)
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+ {
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+ size = Bounds.Size;
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|
+
|
|
|
+ if (!AutoSize && !ustring.IsNullOrEmpty (TextFormatter.Text)) {
|
|
|
+ switch (TextFormatter.IsVerticalDirection (TextDirection)) {
|
|
|
+ case true:
|
|
|
+ var colWidth = TextFormatter.GetSumMaxCharWidth (new List<ustring> { TextFormatter.Text }, 0, 1);
|
|
|
+ // TODO: v2 - This uses frame.Width; it should only use Bounds
|
|
|
+ if (_frame.Width < colWidth &&
|
|
|
+ (Width == null ||
|
|
|
+ (Bounds.Width >= 0 &&
|
|
|
+ Width is Dim.DimAbsolute &&
|
|
|
+ Width.Anchor (0) >= 0 &&
|
|
|
+ Width.Anchor (0) < colWidth))) {
|
|
|
+ size = new Size (colWidth, Bounds.Height);
|
|
|
+ return true;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ default:
|
|
|
+ if (_frame.Height < 1 &&
|
|
|
+ (Height == null ||
|
|
|
+ (Height is Dim.DimAbsolute &&
|
|
|
+ Height.Anchor (0) == 0))) {
|
|
|
+ size = new Size (Bounds.Width, 1);
|
|
|
+ return true;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return false;
|
|
|
+ }
|
|
|
+
|
|
|
+ // BUGBUG - v2 - Should be renamed "SetBoundsToFitFrame"
|
|
|
+ /// <summary>
|
|
|
+ /// Sets the size of the View to the minimum width or height required to fit <see cref="Text"/> (see <see cref="GetMinimumBounds(out Size)"/>.
|
|
|
+ /// </summary>
|
|
|
+ /// <returns><see langword="true"/> if the size was changed, <see langword="false"/> if <see cref="Text"/>
|
|
|
+ /// will not fit.</returns>
|
|
|
+ public bool SetMinWidthHeight ()
|
|
|
+ {
|
|
|
+ if (GetMinimumBounds (out Size size)) {
|
|
|
+ _frame = new Rect (_frame.Location, size);
|
|
|
+ return true;
|
|
|
+ }
|
|
|
+ return false;
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// Called whenever the view needs to be resized. Sets <see cref="Frame"/> and
|
|
|
+ /// triggers a <see cref="LayoutSubviews()"/> call. ///
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// Can be overridden if the view resize behavior is different than the default.
|
|
|
+ /// </remarks>
|
|
|
+ protected virtual void OnResizeNeeded ()
|
|
|
+ {
|
|
|
+ var actX = _x is Pos.PosAbsolute ? _x.Anchor (0) : _frame.X;
|
|
|
+ var actY = _y is Pos.PosAbsolute ? _y.Anchor (0) : _frame.Y;
|
|
|
+
|
|
|
+ if (AutoSize) {
|
|
|
+ //if (TextAlignment == TextAlignment.Justified) {
|
|
|
+ // throw new InvalidOperationException ("TextAlignment.Justified cannot be used with AutoSize");
|
|
|
+ //}
|
|
|
+ var s = GetAutoSize ();
|
|
|
+ var w = _width is Dim.DimAbsolute && _width.Anchor (0) > s.Width ? _width.Anchor (0) : s.Width;
|
|
|
+ var h = _height is Dim.DimAbsolute && _height.Anchor (0) > s.Height ? _height.Anchor (0) : s.Height;
|
|
|
+ _frame = new Rect (new Point (actX, actY), new Size (w, h)); // Set frame, not Frame!
|
|
|
+ } else {
|
|
|
+ var w = _width is Dim.DimAbsolute ? _width.Anchor (0) : _frame.Width;
|
|
|
+ var h = _height is Dim.DimAbsolute ? _height.Anchor (0) : _frame.Height;
|
|
|
+ // BUGBUG: v2 - ? - If layoutstyle is absolute, this overwrites the current frame h/w with 0. Hmmm...
|
|
|
+ // This is needed for DimAbsolute values by setting the frame before LayoutSubViews.
|
|
|
+ _frame = new Rect (new Point (actX, actY), new Size (w, h)); // Set frame, not Frame!
|
|
|
+ }
|
|
|
+ //// BUGBUG: I think these calls are redundant or should be moved into just the AutoSize case
|
|
|
+ if (IsInitialized || LayoutStyle == LayoutStyle.Absolute) {
|
|
|
+ SetMinWidthHeight ();
|
|
|
+ LayoutFrames ();
|
|
|
+ TextFormatter.Size = GetSizeNeededForTextAndHotKey ();
|
|
|
+ SetNeedsLayout ();
|
|
|
+ SetNeedsDisplay ();
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ internal bool LayoutNeeded { get; private set; } = true;
|
|
|
+
|
|
|
+ internal void SetNeedsLayout ()
|
|
|
+ {
|
|
|
+ if (LayoutNeeded)
|
|
|
+ return;
|
|
|
+ LayoutNeeded = true;
|
|
|
+ if (SuperView == null)
|
|
|
+ return;
|
|
|
+ SuperView.SetNeedsLayout ();
|
|
|
+ foreach (var view in Subviews) {
|
|
|
+ view.SetNeedsLayout ();
|
|
|
+ }
|
|
|
+ TextFormatter.NeedsFormat = true;
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// Removes the <see cref="SetNeedsLayout"/> setting on this view.
|
|
|
+ /// </summary>
|
|
|
+ protected void ClearLayoutNeeded ()
|
|
|
+ {
|
|
|
+ LayoutNeeded = false;
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// Converts a point from screen-relative coordinates to view-relative coordinates.
|
|
|
+ /// </summary>
|
|
|
+ /// <returns>The mapped point.</returns>
|
|
|
+ /// <param name="x">X screen-coordinate point.</param>
|
|
|
+ /// <param name="y">Y screen-coordinate point.</param>
|
|
|
+ public Point ScreenToView (int x, int y)
|
|
|
+ {
|
|
|
+ if (SuperView == null) {
|
|
|
+ return new Point (x - Frame.X, y - _frame.Y);
|
|
|
+ } else {
|
|
|
+ var parent = SuperView.ScreenToView (x, y);
|
|
|
+ return new Point (parent.X - _frame.X, parent.Y - _frame.Y);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// Converts a point from screen-relative coordinates to bounds-relative coordinates.
|
|
|
+ /// </summary>
|
|
|
+ /// <returns>The mapped point.</returns>
|
|
|
+ /// <param name="x">X screen-coordinate point.</param>
|
|
|
+ /// <param name="y">Y screen-coordinate point.</param>
|
|
|
+ public Point ScreenToBounds (int x, int y)
|
|
|
+ {
|
|
|
+ if (SuperView == null) {
|
|
|
+ var boundsOffset = GetBoundsOffset ();
|
|
|
+ return new Point (x - Frame.X + boundsOffset.X, y - Frame.Y + boundsOffset.Y);
|
|
|
+ } else {
|
|
|
+ var parent = SuperView.ScreenToView (x, y);
|
|
|
+ return new Point (parent.X - _frame.X, parent.Y - _frame.Y);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// Converts a view-relative location to a screen-relative location (col,row). The output is optionally clamped to the screen dimensions.
|
|
|
+ /// </summary>
|
|
|
+ /// <param name="col">View-relative column.</param>
|
|
|
+ /// <param name="row">View-relative row.</param>
|
|
|
+ /// <param name="rcol">Absolute column; screen-relative.</param>
|
|
|
+ /// <param name="rrow">Absolute row; screen-relative.</param>
|
|
|
+ /// <param name="clamped">If <see langword="true"/>, <paramref name="rcol"/> and <paramref name="rrow"/> will be clamped to the
|
|
|
+ /// screen dimensions (they never be negative and will always be less than to <see cref="ConsoleDriver.Cols"/> and
|
|
|
+ /// <see cref="ConsoleDriver.Rows"/>, respectively.</param>
|
|
|
+ public virtual void ViewToScreen (int col, int row, out int rcol, out int rrow, bool clamped = true)
|
|
|
+ {
|
|
|
+ var boundsOffset = GetBoundsOffset ();
|
|
|
+ rcol = col + Frame.X + boundsOffset.X;
|
|
|
+ rrow = row + Frame.Y + boundsOffset.Y;
|
|
|
+
|
|
|
+ var super = SuperView;
|
|
|
+ while (super != null) {
|
|
|
+ boundsOffset = super.GetBoundsOffset ();
|
|
|
+ rcol += super.Frame.X + boundsOffset.X;
|
|
|
+ rrow += super.Frame.Y + boundsOffset.Y;
|
|
|
+ super = super.SuperView;
|
|
|
+ }
|
|
|
+
|
|
|
+ // The following ensures that the cursor is always in the screen boundaries.
|
|
|
+ if (clamped) {
|
|
|
+ rrow = Math.Min (rrow, Driver.Rows - 1);
|
|
|
+ rcol = Math.Min (rcol, Driver.Cols - 1);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// Converts a region in view-relative coordinates to screen-relative coordinates.
|
|
|
+ /// </summary>
|
|
|
+ internal Rect ViewToScreen (Rect region)
|
|
|
+ {
|
|
|
+ ViewToScreen (region.X, region.Y, out var x, out var y, clamped: false);
|
|
|
+ return new Rect (x, y, region.Width, region.Height);
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// Sets the View's <see cref="Frame"/> to the frame-relative coordinates if its container. The
|
|
|
+ /// container size and location are specified by <paramref name="superviewFrame"/> and are relative to the
|
|
|
+ /// View's superview.
|
|
|
+ /// </summary>
|
|
|
+ /// <param name="superviewFrame">The supserview-relative rectangle describing View's container (nominally the
|
|
|
+ /// same as <c>this.SuperView.Frame</c>).</param>
|
|
|
+ internal void SetRelativeLayout (Rect superviewFrame)
|
|
|
+ {
|
|
|
+ int newX, newW, newY, newH;
|
|
|
+ var autosize = Size.Empty;
|
|
|
+
|
|
|
+ if (AutoSize) {
|
|
|
+ // Note this is global to this function and used as such within the local functions defined
|
|
|
+ // below. In v2 AutoSize will be re-factored to not need to be dealt with in this function.
|
|
|
+ autosize = GetAutoSize ();
|
|
|
+ }
|
|
|
+
|
|
|
+ // Returns the new dimension (width or height) and location (x or y) for the View given
|
|
|
+ // the superview's Frame.X or Frame.Y
|
|
|
+ // the superview's width or height
|
|
|
+ // the current Pos (View.X or View.Y)
|
|
|
+ // the current Dim (View.Width or View.Height)
|
|
|
+ (int newLocation, int newDimension) GetNewLocationAndDimension (int superviewLocation, int superviewDimension, Pos pos, Dim dim, int autosizeDimension)
|
|
|
+ {
|
|
|
+ int newDimension, newLocation;
|
|
|
+
|
|
|
+ switch (pos) {
|
|
|
+ case Pos.PosCenter:
|
|
|
+ if (dim == null) {
|
|
|
+ newDimension = AutoSize ? autosizeDimension : superviewDimension;
|
|
|
+ } else {
|
|
|
+ newDimension = dim.Anchor (superviewDimension);
|
|
|
+ newDimension = AutoSize && autosizeDimension > newDimension ? autosizeDimension : newDimension;
|
|
|
+ }
|
|
|
+ newLocation = pos.Anchor (superviewDimension - newDimension);
|
|
|
+ break;
|
|
|
+
|
|
|
+ case Pos.PosCombine combine:
|
|
|
+ int left, right;
|
|
|
+ (left, newDimension) = GetNewLocationAndDimension (superviewLocation, superviewDimension, combine.left, dim, autosizeDimension);
|
|
|
+ (right, newDimension) = GetNewLocationAndDimension (superviewLocation, superviewDimension, combine.right, dim, autosizeDimension);
|
|
|
+ if (combine.add) {
|
|
|
+ newLocation = left + right;
|
|
|
+ } else {
|
|
|
+ newLocation = left - right;
|
|
|
+ }
|
|
|
+ newDimension = Math.Max (CalculateNewDimension (dim, newLocation, superviewDimension, autosizeDimension), 0);
|
|
|
+ break;
|
|
|
+
|
|
|
+ case Pos.PosAbsolute:
|
|
|
+ case Pos.PosAnchorEnd:
|
|
|
+ case Pos.PosFactor:
|
|
|
+ case Pos.PosFunc:
|
|
|
+ case Pos.PosView:
|
|
|
+ default:
|
|
|
+ newLocation = pos?.Anchor (superviewDimension) ?? 0;
|
|
|
+ newDimension = Math.Max (CalculateNewDimension (dim, newLocation, superviewDimension, autosizeDimension), 0);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ return (newLocation, newDimension);
|
|
|
+ }
|
|
|
+
|
|
|
+ // Recursively calculates the new dimension (width or height) of the given Dim given:
|
|
|
+ // the current location (x or y)
|
|
|
+ // the current dimension (width or height)
|
|
|
+ int CalculateNewDimension (Dim d, int location, int dimension, int autosize)
|
|
|
+ {
|
|
|
+ int newDimension;
|
|
|
+ switch (d) {
|
|
|
+ case null:
|
|
|
+ newDimension = AutoSize ? autosize : dimension;
|
|
|
+ break;
|
|
|
+ case Dim.DimCombine combine:
|
|
|
+ int leftNewDim = CalculateNewDimension (combine.left, location, dimension, autosize);
|
|
|
+ int rightNewDim = CalculateNewDimension (combine.right, location, dimension, autosize);
|
|
|
+ if (combine.add) {
|
|
|
+ newDimension = leftNewDim + rightNewDim;
|
|
|
+ } else {
|
|
|
+ newDimension = leftNewDim - rightNewDim;
|
|
|
+ }
|
|
|
+ newDimension = AutoSize && autosize > newDimension ? autosize : newDimension;
|
|
|
+ break;
|
|
|
+
|
|
|
+ case Dim.DimFactor factor when !factor.IsFromRemaining ():
|
|
|
+ newDimension = d.Anchor (dimension);
|
|
|
+ newDimension = AutoSize && autosize > newDimension ? autosize : newDimension;
|
|
|
+ break;
|
|
|
+
|
|
|
+ case Dim.DimFill:
|
|
|
+ default:
|
|
|
+ newDimension = Math.Max (d.Anchor (dimension - location), 0);
|
|
|
+ newDimension = AutoSize && autosize > newDimension ? autosize : newDimension;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ return newDimension;
|
|
|
+ }
|
|
|
+
|
|
|
+ // horizontal
|
|
|
+ (newX, newW) = GetNewLocationAndDimension (superviewFrame.X, superviewFrame.Width, _x, _width, autosize.Width);
|
|
|
+
|
|
|
+ // vertical
|
|
|
+ (newY, newH) = GetNewLocationAndDimension (superviewFrame.Y, superviewFrame.Height, _y, _height, autosize.Height);
|
|
|
+
|
|
|
+ var r = new Rect (newX, newY, newW, newH);
|
|
|
+ if (Frame != r) {
|
|
|
+ Frame = r;
|
|
|
+ // BUGBUG: Why is this AFTER setting Frame? Seems duplicative.
|
|
|
+ if (!SetMinWidthHeight ()) {
|
|
|
+ TextFormatter.Size = GetSizeNeededForTextAndHotKey ();
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// Fired after the View's <see cref="LayoutSubviews"/> method has completed.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// Subscribe to this event to perform tasks when the <see cref="View"/> has been resized or the layout has otherwise changed.
|
|
|
+ /// </remarks>
|
|
|
+ public event EventHandler<LayoutEventArgs> LayoutStarted;
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// Raises the <see cref="LayoutStarted"/> event. Called from <see cref="LayoutSubviews"/> before any subviews have been laid out.
|
|
|
+ /// </summary>
|
|
|
+ internal virtual void OnLayoutStarted (LayoutEventArgs args)
|
|
|
+ {
|
|
|
+ LayoutStarted?.Invoke (this, args);
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// Fired after the View's <see cref="LayoutSubviews"/> method has completed.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// Subscribe to this event to perform tasks when the <see cref="View"/> has been resized or the layout has otherwise changed.
|
|
|
+ /// </remarks>
|
|
|
+ public event EventHandler<LayoutEventArgs> LayoutComplete;
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// Event called only once when the <see cref="View"/> is being initialized for the first time.
|
|
|
+ /// Allows configurations and assignments to be performed before the <see cref="View"/> being shown.
|
|
|
+ /// This derived from <see cref="ISupportInitializeNotification"/> to allow notify all the views that are being initialized.
|
|
|
+ /// </summary>
|
|
|
+ public event EventHandler Initialized;
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// Raises the <see cref="LayoutComplete"/> event. Called from <see cref="LayoutSubviews"/> before all sub-views have been laid out.
|
|
|
+ /// </summary>
|
|
|
+ internal virtual void OnLayoutComplete (LayoutEventArgs args)
|
|
|
+ {
|
|
|
+ LayoutComplete?.Invoke (this, args);
|
|
|
+ }
|
|
|
+
|
|
|
+ internal void CollectPos (Pos pos, View from, ref HashSet<View> nNodes, ref HashSet<(View, View)> nEdges)
|
|
|
+ {
|
|
|
+ switch (pos) {
|
|
|
+ case Pos.PosView pv:
|
|
|
+ // See #2461
|
|
|
+ //if (!from.InternalSubviews.Contains (pv.Target)) {
|
|
|
+ // throw new InvalidOperationException ($"View {pv.Target} is not a subview of {from}");
|
|
|
+ //}
|
|
|
+ if (pv.Target != this) {
|
|
|
+ nEdges.Add ((pv.Target, from));
|
|
|
+ }
|
|
|
+ return;
|
|
|
+ case Pos.PosCombine pc:
|
|
|
+ CollectPos (pc.left, from, ref nNodes, ref nEdges);
|
|
|
+ CollectPos (pc.right, from, ref nNodes, ref nEdges);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ internal void CollectDim (Dim dim, View from, ref HashSet<View> nNodes, ref HashSet<(View, View)> nEdges)
|
|
|
+ {
|
|
|
+ switch (dim) {
|
|
|
+ case Dim.DimView dv:
|
|
|
+ // See #2461
|
|
|
+ //if (!from.InternalSubviews.Contains (dv.Target)) {
|
|
|
+ // throw new InvalidOperationException ($"View {dv.Target} is not a subview of {from}");
|
|
|
+ //}
|
|
|
+ if (dv.Target != this) {
|
|
|
+ nEdges.Add ((dv.Target, from));
|
|
|
+ }
|
|
|
+ return;
|
|
|
+ case Dim.DimCombine dc:
|
|
|
+ CollectDim (dc.left, from, ref nNodes, ref nEdges);
|
|
|
+ CollectDim (dc.right, from, ref nNodes, ref nEdges);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ internal void CollectAll (View from, ref HashSet<View> nNodes, ref HashSet<(View, View)> nEdges)
|
|
|
+ {
|
|
|
+ foreach (var v in from.InternalSubviews) {
|
|
|
+ nNodes.Add (v);
|
|
|
+ if (v._layoutStyle != LayoutStyle.Computed) {
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ CollectPos (v.X, v, ref nNodes, ref nEdges);
|
|
|
+ CollectPos (v.Y, v, ref nNodes, ref nEdges);
|
|
|
+ CollectDim (v.Width, v, ref nNodes, ref nEdges);
|
|
|
+ CollectDim (v.Height, v, ref nNodes, ref nEdges);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ // https://en.wikipedia.org/wiki/Topological_sorting
|
|
|
+ internal static List<View> TopologicalSort (View superView, IEnumerable<View> nodes, ICollection<(View From, View To)> edges)
|
|
|
+ {
|
|
|
+ var result = new List<View> ();
|
|
|
+
|
|
|
+ // Set of all nodes with no incoming edges
|
|
|
+ var noEdgeNodes = new HashSet<View> (nodes.Where (n => edges.All (e => !e.To.Equals (n))));
|
|
|
+
|
|
|
+ while (noEdgeNodes.Any ()) {
|
|
|
+ // remove a node n from S
|
|
|
+ var n = noEdgeNodes.First ();
|
|
|
+ noEdgeNodes.Remove (n);
|
|
|
+
|
|
|
+ // add n to tail of L
|
|
|
+ if (n != superView)
|
|
|
+ result.Add (n);
|
|
|
+
|
|
|
+ // for each node m with an edge e from n to m do
|
|
|
+ foreach (var e in edges.Where (e => e.From.Equals (n)).ToArray ()) {
|
|
|
+ var m = e.To;
|
|
|
+
|
|
|
+ // remove edge e from the graph
|
|
|
+ edges.Remove (e);
|
|
|
+
|
|
|
+ // if m has no other incoming edges then
|
|
|
+ if (edges.All (me => !me.To.Equals (m)) && m != superView) {
|
|
|
+ // insert m into S
|
|
|
+ noEdgeNodes.Add (m);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if (edges.Any ()) {
|
|
|
+ foreach ((var from, var to) in edges) {
|
|
|
+ if (from == to) {
|
|
|
+ // if not yet added to the result, add it and remove from edge
|
|
|
+ if (result.Find (v => v == from) == null) {
|
|
|
+ result.Add (from);
|
|
|
+ }
|
|
|
+ edges.Remove ((from, to));
|
|
|
+ } else if (from.SuperView == to.SuperView) {
|
|
|
+ // if 'from' is not yet added to the result, add it
|
|
|
+ if (result.Find (v => v == from) == null) {
|
|
|
+ result.Add (from);
|
|
|
+ }
|
|
|
+ // if 'to' is not yet added to the result, add it
|
|
|
+ if (result.Find (v => v == to) == null) {
|
|
|
+ result.Add (to);
|
|
|
+ }
|
|
|
+ // remove from edge
|
|
|
+ edges.Remove ((from, to));
|
|
|
+ } else if (from != superView?.GetTopSuperView (to, from) && !ReferenceEquals (from, to)) {
|
|
|
+ if (ReferenceEquals (from.SuperView, to)) {
|
|
|
+ throw new InvalidOperationException ($"ComputedLayout for \"{superView}\": \"{to}\" references a SubView (\"{from}\").");
|
|
|
+ } else {
|
|
|
+ throw new InvalidOperationException ($"ComputedLayout for \"{superView}\": \"{from}\" linked with \"{to}\" was not found. Did you forget to add it to {superView}?");
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ // return L (a topologically sorted order)
|
|
|
+ return result;
|
|
|
+ } // TopologicalSort
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// Overriden by <see cref="Frame"/> to do nothing, as the <see cref="Frame"/> does not have frames.
|
|
|
+ /// </summary>
|
|
|
+ internal virtual void LayoutFrames ()
|
|
|
+ {
|
|
|
+ if (Margin == null) return; // CreateFrames() has not been called yet
|
|
|
+
|
|
|
+ if (Margin.Frame.Size != Frame.Size) {
|
|
|
+ Margin._frame = new Rect (Point.Empty, Frame.Size);
|
|
|
+ Margin.X = 0;
|
|
|
+ Margin.Y = 0;
|
|
|
+ Margin.Width = Frame.Size.Width;
|
|
|
+ Margin.Height = Frame.Size.Height;
|
|
|
+ Margin.SetNeedsLayout ();
|
|
|
+ Margin.LayoutSubviews ();
|
|
|
+ Margin.SetNeedsDisplay ();
|
|
|
+ }
|
|
|
+
|
|
|
+ var border = Margin.Thickness.GetInside (Margin.Frame);
|
|
|
+ if (border != Border.Frame) {
|
|
|
+ Border._frame = new Rect (new Point (border.Location.X, border.Location.Y), border.Size);
|
|
|
+ Border.X = border.Location.X;
|
|
|
+ Border.Y = border.Location.Y;
|
|
|
+ Border.Width = border.Size.Width;
|
|
|
+ Border.Height = border.Size.Height;
|
|
|
+ Border.SetNeedsLayout ();
|
|
|
+ Border.LayoutSubviews ();
|
|
|
+ Border.SetNeedsDisplay ();
|
|
|
+ }
|
|
|
+
|
|
|
+ var padding = Border.Thickness.GetInside (Border.Frame);
|
|
|
+ if (padding != Padding.Frame) {
|
|
|
+ Padding._frame = new Rect (new Point (padding.Location.X, padding.Location.Y), padding.Size);
|
|
|
+ Padding.X = padding.Location.X;
|
|
|
+ Padding.Y = padding.Location.Y;
|
|
|
+ Padding.Width = padding.Size.Width;
|
|
|
+ Padding.Height = padding.Size.Height;
|
|
|
+ Padding.SetNeedsLayout ();
|
|
|
+ Padding.LayoutSubviews ();
|
|
|
+ Padding.SetNeedsDisplay ();
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// Invoked when a view starts executing or when the dimensions of the view have changed, for example in
|
|
|
+ /// response to the container view or terminal resizing.
|
|
|
+ /// </summary>
|
|
|
+ /// <remarks>
|
|
|
+ /// Calls <see cref="OnLayoutComplete"/> (which raises the <see cref="LayoutComplete"/> event) before it returns.
|
|
|
+ /// </remarks>
|
|
|
+ public virtual void LayoutSubviews ()
|
|
|
+ {
|
|
|
+ if (!LayoutNeeded) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ LayoutFrames ();
|
|
|
+
|
|
|
+ var oldBounds = Bounds;
|
|
|
+ OnLayoutStarted (new LayoutEventArgs () { OldBounds = oldBounds });
|
|
|
+
|
|
|
+ TextFormatter.Size = GetSizeNeededForTextAndHotKey ();
|
|
|
+
|
|
|
+ // Sort out the dependencies of the X, Y, Width, Height properties
|
|
|
+ var nodes = new HashSet<View> ();
|
|
|
+ var edges = new HashSet<(View, View)> ();
|
|
|
+ CollectAll (this, ref nodes, ref edges);
|
|
|
+ var ordered = View.TopologicalSort (SuperView, nodes, edges);
|
|
|
+ foreach (var v in ordered) {
|
|
|
+ LayoutSubview (v, new Rect (GetBoundsOffset (), Bounds.Size));
|
|
|
+ }
|
|
|
+
|
|
|
+ // If the 'to' is rooted to 'from' and the layoutstyle is Computed it's a special-case.
|
|
|
+ // Use LayoutSubview with the Frame of the 'from'
|
|
|
+ if (SuperView != null && GetTopSuperView () != null && LayoutNeeded && edges.Count > 0) {
|
|
|
+ foreach ((var from, var to) in edges) {
|
|
|
+ LayoutSubview (to, from.Frame);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ LayoutNeeded = false;
|
|
|
+
|
|
|
+ OnLayoutComplete (new LayoutEventArgs () { OldBounds = oldBounds });
|
|
|
+ }
|
|
|
+
|
|
|
+ private void LayoutSubview (View v, Rect contentArea)
|
|
|
+ {
|
|
|
+ if (v.LayoutStyle == LayoutStyle.Computed) {
|
|
|
+ v.SetRelativeLayout (contentArea);
|
|
|
+ }
|
|
|
+
|
|
|
+ v.LayoutSubviews ();
|
|
|
+ v.LayoutNeeded = false;
|
|
|
+ }
|
|
|
+
|
|
|
+ bool _autoSize;
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// Gets or sets a flag that determines whether the View will be automatically resized to fit the <see cref="Text"/>
|
|
|
+ /// within <see cref="Bounds"/>
|
|
|
+ /// <para>
|
|
|
+ /// The default is <see langword="false"/>. Set to <see langword="true"/> to turn on AutoSize. If <see langword="true"/> then
|
|
|
+ /// <see cref="Width"/> and <see cref="Height"/> will be used if <see cref="Text"/> can fit;
|
|
|
+ /// if <see cref="Text"/> won't fit the view will be resized as needed.
|
|
|
+ /// </para>
|
|
|
+ /// <para>
|
|
|
+ /// In addition, if <see cref="ForceValidatePosDim"/> is <see langword="true"/> the new values of <see cref="Width"/> and
|
|
|
+ /// <see cref="Height"/> must be of the same types of the existing one to avoid breaking the <see cref="Dim"/> settings.
|
|
|
+ /// </para>
|
|
|
+ /// </summary>
|
|
|
+ public virtual bool AutoSize {
|
|
|
+ get => _autoSize;
|
|
|
+ set {
|
|
|
+ var v = ResizeView (value);
|
|
|
+ TextFormatter.AutoSize = v;
|
|
|
+ if (_autoSize != v) {
|
|
|
+ _autoSize = v;
|
|
|
+ TextFormatter.NeedsFormat = true;
|
|
|
+ UpdateTextFormatterText ();
|
|
|
+ OnResizeNeeded ();
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ bool ResizeView (bool autoSize)
|
|
|
+ {
|
|
|
+ if (!autoSize) {
|
|
|
+ return false;
|
|
|
+ }
|
|
|
+
|
|
|
+ var aSize = true;
|
|
|
+ var nBoundsSize = GetAutoSize ();
|
|
|
+ if (nBoundsSize != Bounds.Size) {
|
|
|
+ if (ForceValidatePosDim) {
|
|
|
+ aSize = SetWidthHeight (nBoundsSize);
|
|
|
+ } else {
|
|
|
+ Height = nBoundsSize.Height;
|
|
|
+ Width = nBoundsSize.Width; // = new Rect (Bounds.X, Bounds.Y, nBoundsSize.Width, nBoundsSize.Height);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ // BUGBUG: This call may be redundant
|
|
|
+ TextFormatter.Size = GetSizeNeededForTextAndHotKey ();
|
|
|
+ return aSize;
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// Resizes the View to fit the specified <see cref="Bounds"/> size.
|
|
|
+ /// </summary>
|
|
|
+ /// <param name="nBounds"></param>
|
|
|
+ /// <returns></returns>
|
|
|
+ bool SetWidthHeight (Size nBounds)
|
|
|
+ {
|
|
|
+ var aSize = false;
|
|
|
+ var canSizeW = TrySetWidth (nBounds.Width - GetHotKeySpecifierLength (), out var rW);
|
|
|
+ var canSizeH = TrySetHeight (nBounds.Height - GetHotKeySpecifierLength (false), out var rH);
|
|
|
+ if (canSizeW) {
|
|
|
+ aSize = true;
|
|
|
+ _width = rW;
|
|
|
+ }
|
|
|
+ if (canSizeH) {
|
|
|
+ aSize = true;
|
|
|
+ _height = rH;
|
|
|
+ }
|
|
|
+ if (aSize) {
|
|
|
+ Bounds = new Rect (Bounds.X, Bounds.Y, canSizeW ? rW : Bounds.Width, canSizeH ? rH : Bounds.Height);
|
|
|
+ }
|
|
|
+
|
|
|
+ return aSize;
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// Gets the Frame dimensions required to fit <see cref="Text"/> using the text <see cref="Direction"/> specified by the
|
|
|
+ /// <see cref="TextFormatter"/> property and accounting for any <see cref="HotKeySpecifier"/> characters.
|
|
|
+ /// </summary>
|
|
|
+ /// <returns>The <see cref="Size"/> required to fit the text.</returns>
|
|
|
+ public Size GetAutoSize ()
|
|
|
+ {
|
|
|
+ var rect = TextFormatter.CalcRect (Bounds.X, Bounds.Y, TextFormatter.Text, TextFormatter.Direction);
|
|
|
+ var newWidth = rect.Size.Width - GetHotKeySpecifierLength () + Margin.Thickness.Horizontal + Border.Thickness.Horizontal + Padding.Thickness.Horizontal;
|
|
|
+ var newHeight = rect.Size.Height - GetHotKeySpecifierLength (false) + Margin.Thickness.Vertical + Border.Thickness.Vertical + Padding.Thickness.Vertical;
|
|
|
+ return new Size (newWidth, newHeight);
|
|
|
+ }
|
|
|
+
|
|
|
+ bool IsValidAutoSize (out Size autoSize)
|
|
|
+ {
|
|
|
+ var rect = TextFormatter.CalcRect (_frame.X, _frame.Y, TextFormatter.Text, TextDirection);
|
|
|
+ autoSize = new Size (rect.Size.Width - GetHotKeySpecifierLength (),
|
|
|
+ rect.Size.Height - GetHotKeySpecifierLength (false));
|
|
|
+ return !(ForceValidatePosDim && (!(Width is Dim.DimAbsolute) || !(Height is Dim.DimAbsolute))
|
|
|
+ || _frame.Size.Width != rect.Size.Width - GetHotKeySpecifierLength ()
|
|
|
+ || _frame.Size.Height != rect.Size.Height - GetHotKeySpecifierLength (false));
|
|
|
+ }
|
|
|
+
|
|
|
+ bool IsValidAutoSizeWidth (Dim width)
|
|
|
+ {
|
|
|
+ var rect = TextFormatter.CalcRect (_frame.X, _frame.Y, TextFormatter.Text, TextDirection);
|
|
|
+ var dimValue = width.Anchor (0);
|
|
|
+ return !(ForceValidatePosDim && (!(width is Dim.DimAbsolute)) || dimValue != rect.Size.Width
|
|
|
+ - GetHotKeySpecifierLength ());
|
|
|
+ }
|
|
|
+
|
|
|
+ bool IsValidAutoSizeHeight (Dim height)
|
|
|
+ {
|
|
|
+ var rect = TextFormatter.CalcRect (_frame.X, _frame.Y, TextFormatter.Text, TextDirection);
|
|
|
+ var dimValue = height.Anchor (0);
|
|
|
+ return !(ForceValidatePosDim && (!(height is Dim.DimAbsolute)) || dimValue != rect.Size.Height
|
|
|
+ - GetHotKeySpecifierLength (false));
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// Determines if the View's <see cref="Width"/> can be set to a new value.
|
|
|
+ /// </summary>
|
|
|
+ /// <param name="desiredWidth"></param>
|
|
|
+ /// <param name="resultWidth">Contains the width that would result if <see cref="Width"/> were set to <paramref name="desiredWidth"/>"/> </param>
|
|
|
+ /// <returns><see langword="true"/> if the View's <see cref="Width"/> can be changed to the specified value. False otherwise.</returns>
|
|
|
+ internal bool TrySetWidth (int desiredWidth, out int resultWidth)
|
|
|
+ {
|
|
|
+ var w = desiredWidth;
|
|
|
+ bool canSetWidth;
|
|
|
+ switch (Width) {
|
|
|
+ case Dim.DimCombine _:
|
|
|
+ case Dim.DimView _:
|
|
|
+ case Dim.DimFill _:
|
|
|
+ // It's a Dim.DimCombine and so can't be assigned. Let it have it's Width anchored.
|
|
|
+ w = Width.Anchor (w);
|
|
|
+ canSetWidth = !ForceValidatePosDim;
|
|
|
+ break;
|
|
|
+ case Dim.DimFactor factor:
|
|
|
+ // Tries to get the SuperView Width otherwise the view Width.
|
|
|
+ var sw = SuperView != null ? SuperView.Frame.Width : w;
|
|
|
+ if (factor.IsFromRemaining ()) {
|
|
|
+ sw -= Frame.X;
|
|
|
+ }
|
|
|
+ w = Width.Anchor (sw);
|
|
|
+ canSetWidth = !ForceValidatePosDim;
|
|
|
+ break;
|
|
|
+ default:
|
|
|
+ canSetWidth = true;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ resultWidth = w;
|
|
|
+
|
|
|
+ return canSetWidth;
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// Determines if the View's <see cref="Height"/> can be set to a new value.
|
|
|
+ /// </summary>
|
|
|
+ /// <param name="desiredHeight"></param>
|
|
|
+ /// <param name="resultHeight">Contains the width that would result if <see cref="Height"/> were set to <paramref name="desiredHeight"/>"/> </param>
|
|
|
+ /// <returns><see langword="true"/> if the View's <see cref="Height"/> can be changed to the specified value. False otherwise.</returns>
|
|
|
+ internal bool TrySetHeight (int desiredHeight, out int resultHeight)
|
|
|
+ {
|
|
|
+ var h = desiredHeight;
|
|
|
+ bool canSetHeight;
|
|
|
+ switch (Height) {
|
|
|
+ case Dim.DimCombine _:
|
|
|
+ case Dim.DimView _:
|
|
|
+ case Dim.DimFill _:
|
|
|
+ // It's a Dim.DimCombine and so can't be assigned. Let it have it's height anchored.
|
|
|
+ h = Height.Anchor (h);
|
|
|
+ canSetHeight = !ForceValidatePosDim;
|
|
|
+ break;
|
|
|
+ case Dim.DimFactor factor:
|
|
|
+ // Tries to get the SuperView height otherwise the view height.
|
|
|
+ var sh = SuperView != null ? SuperView.Frame.Height : h;
|
|
|
+ if (factor.IsFromRemaining ()) {
|
|
|
+ sh -= Frame.Y;
|
|
|
+ }
|
|
|
+ h = Height.Anchor (sh);
|
|
|
+ canSetHeight = !ForceValidatePosDim;
|
|
|
+ break;
|
|
|
+ default:
|
|
|
+ canSetHeight = true;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ resultHeight = h;
|
|
|
+
|
|
|
+ return canSetHeight;
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// Finds which view that belong to the <paramref name="start"/> superview at the provided location.
|
|
|
+ /// </summary>
|
|
|
+ /// <param name="start">The superview where to look for.</param>
|
|
|
+ /// <param name="x">The column location in the superview.</param>
|
|
|
+ /// <param name="y">The row location in the superview.</param>
|
|
|
+ /// <param name="resx">The found view screen relative column location.</param>
|
|
|
+ /// <param name="resy">The found view screen relative row location.</param>
|
|
|
+ /// <returns>
|
|
|
+ /// The view that was found at the <praramref name="x"/> and <praramref name="y"/> coordinates.
|
|
|
+ /// <see langword="null"/> if no view was found.
|
|
|
+ /// </returns>
|
|
|
+ public static View FindDeepestView (View start, int x, int y, out int resx, out int resy)
|
|
|
+ {
|
|
|
+ var startFrame = start.Frame;
|
|
|
+
|
|
|
+ if (!startFrame.Contains (x, y)) {
|
|
|
+ resx = 0;
|
|
|
+ resy = 0;
|
|
|
+ return null;
|
|
|
+ }
|
|
|
+ if (start.InternalSubviews != null) {
|
|
|
+ int count = start.InternalSubviews.Count;
|
|
|
+ if (count > 0) {
|
|
|
+ var boundsOffset = start.GetBoundsOffset ();
|
|
|
+ var rx = x - (startFrame.X + boundsOffset.X);
|
|
|
+ var ry = y - (startFrame.Y + boundsOffset.Y);
|
|
|
+ for (int i = count - 1; i >= 0; i--) {
|
|
|
+ View v = start.InternalSubviews [i];
|
|
|
+ if (v.Visible && v.Frame.Contains (rx, ry)) {
|
|
|
+ var deep = FindDeepestView (v, rx, ry, out resx, out resy);
|
|
|
+ if (deep == null)
|
|
|
+ return v;
|
|
|
+ return deep;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ resx = x - startFrame.X;
|
|
|
+ resy = y - startFrame.Y;
|
|
|
+ return start;
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|