WINFORM学习手册——SolidBrush、HatchBrush、LinearGradientBrush、PathGradientBrush、TexturedBrush

一、SolidBrush：

默认的画刷，填充一片颜色

/// <summary>
        /// SolidBrush
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void PaintSolidBrush(object sender, PaintEventArgs e)
        {
            Graphics g = e.Graphics;

            //创建一把SolidBrush并用它来填充一个矩形区域 
            SolidBrush sb = new SolidBrush(Color.Pink);
            //画一个填充颜色的矩形
            g.FillRectangle(sb, 50, 100, 150, 150);
        }

二、HatchBrush

/// <summary>
        /// HatchBrush
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void PaintHatchBrush(object sender, PaintEventArgs e)
        {
            Graphics g = e.Graphics;

            //创建一把HatchBrush并用它来填充一个矩形区域 

            /*该画刷的HatchStyle有DiagonalCross、 

            ForwardDiagonal、Horizontal、 Vertical、 Solid等不同风格 */

            HatchStyle hs = HatchStyle.Cross;

            HatchBrush sb = new HatchBrush(hs, Color.Blue, Color.Red);

            g.FillRectangle(sb, 50, 100, 150, 150);
        }

三、LinearGradientBrush

线性渐变填充

/// <summary>
        /// LinearGradientBrush
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void PaintLinearGradientBrush(object sender, PaintEventArgs e)
        {
            Rectangle r = new Rectangle(100, 100, 100, 100);//创建一个矩形

            LinearGradientBrush lb = new LinearGradientBrush(r, Color.Red, Color.Yellow,

            LinearGradientMode.BackwardDiagonal);

            e.Graphics.FillRectangle(lb, r);
        }

四、PathGradientBrush

路径渐变填充

/// <summary>
        /// PathGradientBrush
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void PaintPathGradientBrush(object sender, PaintEventArgs e)
        {
            e.Graphics.TextRenderingHint = TextRenderingHint.AntiAlias;
            e.Graphics.FillRectangle(new SolidBrush(Color.FromArgb(180, Color.White)), ClientRectangle);
            //先设置好一个路径 
            GraphicsPath path = new GraphicsPath(new Point[] { 
                    new Point(40, 140), 
                    new Point(275, 200), 
                    new Point(105, 225), 
                    new Point(190, 300), 
                    new Point(50, 350), 
                    new Point(20, 180), 
                }, new byte[] { 
                    (byte)PathPointType.Start, 
                    (byte)PathPointType.Bezier, 
                    (byte)PathPointType.Bezier, 
                    (byte)PathPointType.Bezier, 
                    (byte)PathPointType.Line, 
                    (byte)PathPointType.Line, 
                });
            //创建一把PathGradientBrush 
            PathGradientBrush pgb = new PathGradientBrush(path);
            //设置画刷的周围颜色 
            pgb.SurroundColors = new Color[] { 
　            Color.Green, 
　            Color.Yellow, 
　            Color.Red, 
　            Color.Blue, 
　            Color.Orange, 
　            Color.White, 
            };
            //用画刷进行填充 
            e.Graphics.FillPath(pgb, path);
        }

五、TexturedBrush

纹理填充

/// <summary>
        /// TexturedBrush
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void PaintTexturedBrush(object sender, PaintEventArgs e)
        {
            Graphics g = e.Graphics;
            string path = System.Environment.CurrentDirectory;
            Image bgimage = new Bitmap(path + @".\Koala.jpg");
            var bgbrush = new TextureBrush(bgimage);
            g.FillEllipse(bgbrush, 50, 100, 500, 300);
        }