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using System.Collections.Generic;
using Microsoft.Xna.Framework;
namespace MonoGame.Extended.Gui.Controls
{
public class ContentControl : Control
{
private bool _contentChanged = true;
private object _content;
public object Content
{
get => _content;
set
{
if (_content != value)
{
_content = value;
_contentChanged = true;
}
}
}
public override IEnumerable<Control> Children
{
get
{
if (Content is Control control)
yield return control;
}
}
public bool HasContent => Content == null;
public override void InvalidateMeasure()
{
base.InvalidateMeasure();
_contentChanged = true;
}
public override void Update(IGuiContext context, float deltaSeconds)
{
if (_content is Control control && _contentChanged)
{
control.Parent = this;
control.ActualSize = ContentRectangle.Size;
control.Position = new Point(Padding.Left, Padding.Top);
control.InvalidateMeasure();
_contentChanged = false;
}
}
public override void Draw(IGuiContext context, IGuiRenderer renderer, float deltaSeconds)
{
base.Draw(context, renderer, deltaSeconds);
if (Content is Control control)
{
control.Draw(context, renderer, deltaSeconds);
}
else
{
var text = Content?.ToString();
var textInfo = GetTextInfo(context, text, ContentRectangle, HorizontalTextAlignment, VerticalTextAlignment);
if (!string.IsNullOrWhiteSpace(textInfo.Text))
renderer.DrawText(textInfo.Font, textInfo.Text, textInfo.Position + TextOffset, textInfo.Color, textInfo.ClippingRectangle);
}
}
public override Size GetContentSize(IGuiContext context)
{
if (Content is Control control)
return control.CalculateActualSize(context);
var text = Content?.ToString();
var font = Font ?? context.DefaultFont;
return (Size)font.MeasureString(text ?? string.Empty);
}
}
}
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