Sunji-posv-net/pos/JwKdsV/Component/RichLabel.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Text;

namespace JwKdsV.Component
{
    public partial class RichLabel : Label
    {
        public RichLabel()
        {
            InitializeComponent();
        }

        protected override void OnPaint(PaintEventArgs e)
        {
            base.OnPaint(e);

            Color nearestColor = e.Graphics.GetNearestColor(base.Enabled ? this.ForeColor : SystemColors.Control);
            string[] strArr = this.Text.Split(new char[2] { ':', '：' }, StringSplitOptions.RemoveEmptyEntries);
            StringFormat format = this.CreateStringFormat2();
            if (this.Enabled)
            {
                using (Brush brush = new SolidBrush(System.Drawing.Color.Red))
                {
                    e.Graphics.DrawString(strArr[0], this.Font, brush, base.ClientRectangle, format);
                }
                SizeF size = e.Graphics.MeasureString(strArr[0], this.Font);  //计算已经画了字符串的大小 计算已经画了字符串的大小;
                //计算剩余空间
                System.Drawing.Rectangle rectangle = e.ClipRectangle;
                rectangle.Location = new Point(e.ClipRectangle.Location.X + (int)size.Width, e.ClipRectangle.Location.Y);
                using (Brush brush = new SolidBrush(nearestColor))
                {
                    e.Graphics.DrawString(Text.Substring(strArr.Length), this.Font, brush, rectangle, format);
                }
            }
            else
            {
                ControlPaint.DrawStringDisabled(e.Graphics, this.Text, this.Font, nearestColor, base.ClientRectangle, format);
            }
            format.Dispose();
        }

        /// <summary>
        /// 获取文字对齐方式
        /// </summary>
        /// <returns></returns>
        private StringFormat CreateStringFormat2()
        {
            StringFormat format = StringFormat.GenericDefault;
            if (this.RightToLeft == RightToLeft.Yes)
            {
                format.FormatFlags |= StringFormatFlags.DirectionRightToLeft;
            }
            if (!this.UseMnemonic)
            {
                format.HotkeyPrefix = HotkeyPrefix.None;
            }
            else if (base.ShowKeyboardCues)
            {
                format.HotkeyPrefix = HotkeyPrefix.Show;
            }
            else
            {
                format.HotkeyPrefix = HotkeyPrefix.Hide;
            }
            if (this.AutoSize)
            {
                format.FormatFlags |= StringFormatFlags.MeasureTrailingSpaces;
            }
            return format;
        }

    }
}