WPF实现文本描边+外发光效果的示例代码_实用技巧_

using System; using System.Drawing; using System.Drawing.Drawing2D; using System.Drawing.Text; using System.IO; namespace TextHighLighthDemo { public class FancyText { private static System.Windows.Media.Imaging.BitmapImage BitmapToBitmapImage(System.Drawing.Bitmap bitmap) { using (MemoryStream stream = new MemoryStream()) { bitmap.Save(stream, System.Drawing.Imaging.ImageFormat.Png); // 坑点：格式选Bmp时，不带透明度 stream.Position = 0; System.Windows.Media.Imaging.BitmapImage result = new System.Windows.Media.Imaging.BitmapImage(); result.BeginInit(); result.CacheOption = System.Windows.Media.Imaging.BitmapCacheOption.OnLoad; result.StreamSource = stream; result.EndInit(); result.Freeze(); return result; } } private static Bitmap ImageFromText(string strText, Font fnt, Color clrFore, Color clrBack, int blurAmount = 5) { Bitmap bmpOut = null; int sunNum = 255; //光晕的值 using (Graphics g = Graphics.FromHwnd(IntPtr.Zero)) { SizeF sz = g.MeasureString(strText, fnt); using (Bitmap bmp = new Bitmap((int)sz.Width, (int)sz.Height)) using (Graphics gBmp = Graphics.FromImage(bmp)) using (SolidBrush brBack = new SolidBrush(Color.FromArgb(sunNum, clrBack.R, clrBack.G, clrBack.B))) using (SolidBrush brFore = new SolidBrush(clrFore)) { gBmp.SmoothingMode = SmoothingMode.HighQuality; gBmp.InterpolationMode = InterpolationMode.HighQualityBilinear; gBmp.TextRenderingHint = TextRenderingHint.AntiAliasGridFit; gBmp.DrawString(strText, fnt, brBack, 0, 0); bmpOut = new Bitmap(bmp.Width + blurAmount, bmp.Height + blurAmount); using (Graphics gBmpOut = Graphics.FromImage(bmpOut)) { gBmpOut.SmoothingMode = SmoothingMode.HighQuality; gBmpOut.InterpolationMode = InterpolationMode.HighQualityBilinear; gBmpOut.TextRenderingHint = TextRenderingHint.AntiAliasGridFit; //阴影光晕 for (int x = 0; x <= blurAmount; x++) { for (int y = 0; y <= blurAmount; y++) { gBmpOut.DrawImageUnscaled(bmp, x, y); } } gBmpOut.DrawString(strText, fnt, brFore, blurAmount / 2, blurAmount / 2); } } } return bmpOut; } /// 
 /// 文本转图片 /// 
 ///  ///  ///  ///  ///  ///  public static System.Windows.Media.Imaging.BitmapImage BitmapImageFromText(string strText, Font fnt, Color clrFore, Color clrBack, int blurAmount = 5) { return BitmapToBitmapImage(ImageFromText(strText, fnt, clrFore, clrBack, blurAmount)); } } }

var backColor = System.Drawing.ColorTranslator.FromHtml("#037be2"); var forColor= System.Drawing.ColorTranslator.FromHtml("#ffffff"); img.Source = FancyText.BitmapImageFromText("测试字体，微软雅黑", new System.Drawing.Font("Microsoft YaHei", 60, System.Drawing.FontStyle.Bold), forColor, backColor, 6); img1.Source = FancyText.BitmapImageFromText("外发光+描边", new System.Drawing.Font("Microsoft YaHei", 30, System.Drawing.FontStyle.Bold), forColor, backColor, 3);