WinForms 使用Graphics绘制字体阴影

转自:http://www.cnblogs.com/LonelyShadow/p/3893743.html

 

C#以两种方法实现文字阴影效果,同时还实现了简单的动画效果:
  一种是对文本使用去锯齿的边缘处理,在两个不同的位置绘制文本,形成阴影;
  另一个是以阴影为线条,构造影线画刷,先画背景再画前景,使用graphics.DrawString来绘制文字的阴影。

实现效果如下:

 

WinForms 使用Graphics绘制字体阴影

using System;

using System.Collections.Generic; 

using System.Drawing;

using System.Drawing.Drawing2D;

using System.Linq; 

using System.Windows.Forms;



namespace Guying.Project.DrawFontShadow

{

    public partial class FrmMain : Form

    {

        public FrmMain()

        {

            InitializeComponent();

        }



        protected override void OnPaint(PaintEventArgs e)

        {

            base.OnPaint(e);

            Graphics graphics = e.Graphics;

            graphics.Clear(Color.White);

            //对文本使用去锯齿的边缘处理

            FontFamily fontFamily = new FontFamily("宋体");

            Font font = new Font(fontFamily, 100, FontStyle.Bold, GraphicsUnit.Pixel);

            //文本输出框

            RectangleF textout = new RectangleF(font.Height, this.ClientSize.Height / 2, this.ClientSize.Width, this.ClientSize.Height);

            //在两个不同的位置绘制文本,形成阴影

            //solidBrush的色彩透明度为100,暗黑

            SolidBrush solidBrush = new SolidBrush(Color.FromArgb(100, Color.Black));

            SolidBrush redBrush = new SolidBrush(Color.Blue);

            graphics.DrawString("孤影", font, solidBrush,

                new PointF(27.0f, 27.0f));

            graphics.DrawString("孤影", font, redBrush,

                new PointF(12.0f, 20.0f));

            //另一种阴影字,阴影为线条

            //构造影线画刷

            HatchBrush brush_tmp = new HatchBrush(

                HatchStyle.DarkDownwardDiagonal, Color.Black, Color.White);

            int reptime = 40;

            //先画背景

            for (int i = 0; i < reptime; i++)

                graphics.DrawString("您好", font, brush_tmp,

                    new PointF(textout.X + i + 2, textout.Y + i + 2));

            //再画前景

            graphics.DrawString("您好", font, Brushes.Blue, new PointF(textout.X, textout.Y));

        } 

}



使用Graphics绘制字体阴影

 

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