75 lines
2.4 KiB
C#
75 lines
2.4 KiB
C#
// Copyright (c) 2012-2024 Wojciech Figat. All rights reserved.
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namespace FlaxEngine.GUI
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{
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/// <summary>
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/// This panel arranges child controls horizontally.
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/// </summary>
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/// <seealso cref="FlaxEngine.GUI.PanelWithMargins" />
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[ActorToolbox("GUI")]
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public class HorizontalPanel : PanelWithMargins
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{
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/// <summary>
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/// Initializes a new instance of the <see cref="HorizontalPanel"/> class.
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/// </summary>
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public HorizontalPanel()
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{
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}
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/// <inheritdoc />
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protected override void PerformLayoutBeforeChildren()
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{
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base.PerformLayoutBeforeChildren();
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// Pre-set height of all controls
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float h = Height - _margin.Height;
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for (int i = 0; i < _children.Count; i++)
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{
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Control c = _children[i];
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if (c.Visible && Mathf.IsZero(c.AnchorMin.Y) && Mathf.IsZero(c.AnchorMax.Y))
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{
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c.Height = h;
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}
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}
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}
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/// <inheritdoc />
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protected override void PerformLayoutAfterChildren()
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{
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// Sort controls horizontally
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float left = _margin.Left;
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float right = _margin.Right;
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float h = Height - _margin.Height;
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bool hasAnyLeft = false, hasAnyRight = false;
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for (int i = 0; i < _children.Count; i++)
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{
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Control c = _children[i];
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if (c.Visible)
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{
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var w = c.Width;
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if (Mathf.IsZero(c.AnchorMin.X) && Mathf.IsZero(c.AnchorMax.X))
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{
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c.Bounds = new Rectangle(left + _offset.X, _margin.Top + _offset.Y, w, h);
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left = c.Right + _spacing;
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hasAnyLeft = true;
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}
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else if (Mathf.IsOne(c.AnchorMin.X) && Mathf.IsOne(c.AnchorMax.X))
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{
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right += w + _spacing;
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c.Bounds = new Rectangle(Width - right + _offset.X, _margin.Top + _offset.Y, w, h);
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hasAnyRight = true;
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}
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}
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}
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if (hasAnyLeft)
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left -= _spacing;
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if (hasAnyRight)
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right -= _spacing;
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// Update size
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if (_autoSize)
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Width = left + right;
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}
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}
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}
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