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using System;
using Microsoft.Xna.Framework;
namespace MonoGame.Extended.Gui.Controls
{
public class StackPanel : LayoutControl
{
public StackPanel()
{
}
public Orientation Orientation { get; set; } = Orientation.Vertical;
public int Spacing { get; set; }
public override Size GetContentSize(IGuiContext context)
{
var width = 0;
var height = 0;
foreach (var control in Items)
{
var actualSize = control.CalculateActualSize(context);
switch (Orientation)
{
case Orientation.Horizontal:
width += actualSize.Width;
height = actualSize.Height > height ? actualSize.Height : height;
break;
case Orientation.Vertical:
width = actualSize.Width > width ? actualSize.Width : width;
height += actualSize.Height;
break;
default:
throw new InvalidOperationException($"Unexpected orientation {Orientation}");
}
}
width += Orientation == Orientation.Horizontal ? (Items.Count - 1) * Spacing : 0;
height += Orientation == Orientation.Vertical ? (Items.Count - 1) * Spacing : 0;
return new Size(width, height);
}
protected override void Layout(IGuiContext context, Rectangle rectangle)
{
foreach (var control in Items)
{
var actualSize = control.CalculateActualSize(context);
switch (Orientation)
{
case Orientation.Vertical:
PlaceControl(context, control, rectangle.X, rectangle.Y, rectangle.Width, actualSize.Height);
rectangle.Y += actualSize.Height + Spacing;
rectangle.Height -= actualSize.Height;
break;
case Orientation.Horizontal:
PlaceControl(context, control, rectangle.X, rectangle.Y, actualSize.Width, rectangle.Height);
rectangle.X += actualSize.Width + Spacing;
rectangle.Width -= actualSize.Width;
break;
default:
throw new InvalidOperationException($"Unexpected orientation {Orientation}");
}
}
}
}
}
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