using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Media;
using System.Windows;

namespace Future.Contract
{
    public class BubbleAdorner : Adorner
    {
        private readonly VisualCollection _visuals;
        private readonly Border _bubble;

        public BubbleAdorner(UIElement adornedElement) : base(adornedElement)
        {
            _visuals = new VisualCollection(this);
            _bubble = new Border
            {
                Background = Brushes.LightYellow,
                BorderBrush = Brushes.Black,
                BorderThickness = new Thickness(1),
                CornerRadius = new CornerRadius(2),
                Padding = new Thickness(5),
                Child = new TextBlock { Text = "气泡提示" }
            };

            _visuals.Add(_bubble);
        }

        protected override int VisualChildrenCount => _visuals.Count;

        protected override Visual GetVisualChild(int index) => _visuals[index];

        protected override Size ArrangeOverride(Size finalSize)
        {
            var bubbleSize = _bubble.DesiredSize;
            bubbleSize = _bubble.RenderSize;
            var location = new Point(finalSize.Width + 10, (finalSize.Height - bubbleSize.Height) / 2);
            _bubble.Arrange(new Rect(location, DesiredSize));
            return finalSize;
        }
    }
}