using System.Globalization;
using System.Linq;
using System.Windows;
using System.Windows.Media;

namespace FWindSoft.Wpf
{
    /// <summary>
    /// 绘图相关方式
    /// </summary>
    public class DrawingUtil
    {
        /// <summary>
        /// 划线
        /// </summary>
        /// <returns></returns>
        public static DrawingGroup DrawLine()
        {
            DrawingGroup drawing = new DrawingGroup();
            using (DrawingContext dc = drawing.Open())
            {
                dc.DrawLine(new Pen(new SolidColorBrush(Colors.Black), 1), new Point(0, 9), new Point(100, 9));
            }
            return drawing;
        }
        /// <summary>
        /// 画指定数量的文本内容
        /// </summary>
        /// <param name="text"></param>
        /// <param name="num"></param>
        /// <returns></returns>
        public static DrawingGroup DrawLineText(string text, int num)
        {
            DrawingGroup drawing = new DrawingGroup(){};
            using (DrawingContext dc = drawing.Open())
            {
                dc.DrawLine(new Pen(new SolidColorBrush(Colors.Black), 1), new Point(0, 9), new Point(100, 9));
                Typeface typeFace = Fonts.SystemTypefaces.FirstOrDefault(face => face.FontFamily.FamilyNames.Values.Contains("宋体"));

                if (typeFace == null)
                    typeFace = Fonts.SystemTypefaces.FirstOrDefault();
                double fontSize = 10;
                FormattedText formatted = new FormattedText(text, CultureInfo.CurrentCulture, FlowDirection.LeftToRight,
                    typeFace, fontSize, Brushes.Black);
                double reviseX = formatted.Width / 2;
                double reviseY = 9 - formatted.Height / 2;
                double space = 100d / (num + 1);
                for (int i = 0; i < num; i++)
                {
                    Point point = new Point(space * (i + 1) - reviseX, reviseY);
                    dc.DrawText(formatted, point);
                }

            }
            return drawing;
        }
    }
}