|
|
@@ -1,15 +1,13 @@
|
|
|
-using System;
|
|
|
-using System.Linq;
|
|
|
-using System.Security.Cryptography;
|
|
|
+using System.Security.Cryptography;
|
|
|
using System.Text;
|
|
|
using Masuit.Tools.Systems;
|
|
|
using SixLabors.Fonts;
|
|
|
using SixLabors.ImageSharp;
|
|
|
-using SixLabors.ImageSharp.Drawing;
|
|
|
using SixLabors.ImageSharp.PixelFormats;
|
|
|
using SixLabors.ImageSharp.Processing;
|
|
|
using SixLabors.ImageSharp.Drawing.Processing;
|
|
|
using SixLabors.ImageSharp.Formats.Webp;
|
|
|
+using Path = SixLabors.ImageSharp.Drawing.Path;
|
|
|
|
|
|
namespace Masuit.Tools.Strings;
|
|
|
|
|
|
@@ -18,120 +16,120 @@ namespace Masuit.Tools.Strings;
|
|
|
/// </summary>
|
|
|
public static class ValidateCode
|
|
|
{
|
|
|
- /// <summary>
|
|
|
- /// 生成验证码
|
|
|
- /// </summary>
|
|
|
- /// <param name="length">指定验证码的长度</param>
|
|
|
- /// <returns>验证码字符串</returns>
|
|
|
- public static string CreateValidateCode(int length)
|
|
|
- {
|
|
|
- string ch = "abcdefghjkmnpqrstuvwxyzABCDEFGHJKMNPQRSTUVWXYZ1234567890@#$%&?";
|
|
|
- byte[] b = new byte[4];
|
|
|
- using var cpt = RandomNumberGenerator.Create();
|
|
|
- cpt.GetBytes(b);
|
|
|
- var r = new Random(BitConverter.ToInt32(b, 0));
|
|
|
- var sb = new StringBuilder();
|
|
|
- for (int i = 0; i < length; i++)
|
|
|
- {
|
|
|
- sb.Append(ch[r.StrictNext(ch.Length)]);
|
|
|
- }
|
|
|
-
|
|
|
- return sb.ToString();
|
|
|
- }
|
|
|
-
|
|
|
- /// <summary>
|
|
|
- /// 创建验证码的图片
|
|
|
- /// </summary>
|
|
|
- /// <param name="validateCode">验证码序列</param>
|
|
|
- /// <param name="fontSize">字体大小，默认值28px</param>
|
|
|
- /// <exception cref="Exception">The operation failed.</exception>
|
|
|
- public static PooledMemoryStream CreateValidateGraphic(this string validateCode, int fontSize = 28)
|
|
|
- {
|
|
|
- var fontFamily = SystemFonts.Families.Where(f => new[] { "Consolas", "DejaVu Sans", "KaiTi", "NSimSun", "SimSun", "SimHei", "Microsoft YaHei UI", "Arial" }.Contains(f.Name)).OrderByRandom().FirstOrDefault();
|
|
|
- if (fontFamily == default)
|
|
|
- {
|
|
|
- fontFamily = SystemFonts.Families.OrderByRandom().FirstOrDefault();
|
|
|
- }
|
|
|
-
|
|
|
- var font = fontFamily.CreateFont(fontSize);
|
|
|
- var measure = TextMeasurer.MeasureSize(validateCode, new TextOptions(font));
|
|
|
- var width = (int)Math.Ceiling(measure.Width + 15);
|
|
|
- var height = (int)Math.Ceiling(measure.Height + 15);
|
|
|
- using var image = new Image<Rgba32>(width, height);
|
|
|
-
|
|
|
- //生成随机生成器
|
|
|
- Random random = new Random();
|
|
|
-
|
|
|
- //清空图片背景色
|
|
|
- image.Mutate(g =>
|
|
|
- {
|
|
|
- g.BackgroundColor(Color.White);
|
|
|
-
|
|
|
- //画图片的干扰线
|
|
|
- for (int i = 0; i < 65; i++)
|
|
|
- {
|
|
|
- int x1 = random.StrictNext(width);
|
|
|
- int x2 = random.StrictNext(width);
|
|
|
- int y1 = random.StrictNext(height);
|
|
|
- int y2 = random.StrictNext(height);
|
|
|
- g.Draw(new SolidPen(new Color(new Rgba32((byte)random.StrictNext(255), (byte)random.StrictNext(255), (byte)random.StrictNext(255))), 1), new Path(new[] { new PointF(x1, y1), new PointF(x2, y2) }));
|
|
|
- }
|
|
|
-
|
|
|
- //渐变.
|
|
|
- var brush = new LinearGradientBrush(new PointF(0, 0), new PointF(width, height), GradientRepetitionMode.Repeat, new ColorStop(0.5f, Color.Blue), new ColorStop(0.5f, Color.DarkRed));
|
|
|
- g.DrawText(validateCode, font, brush, new PointF(3, 2));
|
|
|
-
|
|
|
- //画图片的边框线
|
|
|
- g.Draw(Color.Silver, 1, new RectangleF(0, 0, width - 1, height - 1));
|
|
|
- });
|
|
|
-
|
|
|
- //画图片的前景干扰点
|
|
|
- for (int i = 0; i < 350; i++)
|
|
|
- {
|
|
|
- int x = random.StrictNext(image.Width);
|
|
|
- int y = random.StrictNext(image.Height);
|
|
|
- image[x, y] = new Rgba32(random.StrictNext(255), random.StrictNext(255), random.StrictNext(255));
|
|
|
- }
|
|
|
-
|
|
|
- //保存图片数据
|
|
|
- var stream = new PooledMemoryStream();
|
|
|
- image.Save(stream, WebpFormat.Instance);
|
|
|
- stream.Position = 0;
|
|
|
- return stream;
|
|
|
- }
|
|
|
-
|
|
|
- /// <summary>
|
|
|
- /// 字符串宽度
|
|
|
- /// </summary>
|
|
|
- /// <param name="s"></param>
|
|
|
- /// <param name="fontSize"></param>
|
|
|
- /// <returns></returns>
|
|
|
- public static float StringWidth(this string s, int fontSize = 1)
|
|
|
- {
|
|
|
- var fontFamily = SystemFonts.Families.FirstOrDefault(f => f.Name == "Microsoft YaHei UI");
|
|
|
- if (fontFamily == default)
|
|
|
- {
|
|
|
- fontFamily = SystemFonts.Families.FirstOrDefault();
|
|
|
- }
|
|
|
-
|
|
|
- return TextMeasurer.MeasureSize(s, new TextOptions(fontFamily.CreateFont(fontSize))).Width;
|
|
|
- }
|
|
|
-
|
|
|
- /// <summary>
|
|
|
- /// 字符串宽度
|
|
|
- /// </summary>
|
|
|
- /// <param name="s"></param>
|
|
|
- /// <param name="fontName">字体名字，如：Microsoft YaHei UI</param>
|
|
|
- /// <param name="fontSize"></param>
|
|
|
- /// <returns></returns>
|
|
|
- public static float StringWidth(this string s, string fontName, int fontSize = 1)
|
|
|
- {
|
|
|
- var fontFamily = SystemFonts.Families.FirstOrDefault(f => f.Name == fontName);
|
|
|
- if (fontFamily == default)
|
|
|
- {
|
|
|
- throw new ArgumentException($"字体 {fontName} 不存在，请尝试其它字体！");
|
|
|
- }
|
|
|
-
|
|
|
- return TextMeasurer.MeasureSize(s, new TextOptions(fontFamily.CreateFont(fontSize))).Width;
|
|
|
- }
|
|
|
-}
|
|
|
+ /// <summary>
|
|
|
+ /// 生成验证码
|
|
|
+ /// </summary>
|
|
|
+ /// <param name="length">指定验证码的长度</param>
|
|
|
+ /// <returns>验证码字符串</returns>
|
|
|
+ public static string CreateValidateCode(int length)
|
|
|
+ {
|
|
|
+ string ch = "abcdefghjkmnpqrstuvwxyzABCDEFGHJKMNPQRSTUVWXYZ1234567890@#$%&?";
|
|
|
+ byte[] b = new byte[4];
|
|
|
+ using var cpt = RandomNumberGenerator.Create();
|
|
|
+ cpt.GetBytes(b);
|
|
|
+ var r = new Random(BitConverter.ToInt32(b, 0));
|
|
|
+ var sb = new StringBuilder();
|
|
|
+ for (int i = 0; i < length; i++)
|
|
|
+ {
|
|
|
+ sb.Append(ch[r.StrictNext(ch.Length)]);
|
|
|
+ }
|
|
|
+
|
|
|
+ return sb.ToString();
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 创建验证码的图片
|
|
|
+ /// </summary>
|
|
|
+ /// <param name="validateCode">验证码序列</param>
|
|
|
+ /// <param name="fontSize">字体大小，默认值28px</param>
|
|
|
+ /// <exception cref="Exception">The operation failed.</exception>
|
|
|
+ public static PooledMemoryStream CreateValidateGraphic(this string validateCode, int fontSize = 28)
|
|
|
+ {
|
|
|
+ var fontFamily = SystemFonts.Families.Where(f => new[] { "Consolas", "DejaVu Sans", "KaiTi", "NSimSun", "SimSun", "SimHei", "Microsoft YaHei UI", "Arial" }.Contains(f.Name)).OrderByRandom().FirstOrDefault();
|
|
|
+ if (fontFamily == default)
|
|
|
+ {
|
|
|
+ fontFamily = SystemFonts.Families.OrderByRandom().FirstOrDefault();
|
|
|
+ }
|
|
|
+
|
|
|
+ var font = fontFamily.CreateFont(fontSize);
|
|
|
+ var measure = TextMeasurer.MeasureSize(validateCode, new TextOptions(font));
|
|
|
+ var width = (int)Math.Ceiling(measure.Width + 15);
|
|
|
+ var height = (int)Math.Ceiling(measure.Height + 15);
|
|
|
+ using var image = new Image<Rgba32>(width, height);
|
|
|
+
|
|
|
+ //生成随机生成器
|
|
|
+ Random random = new Random();
|
|
|
+
|
|
|
+ //清空图片背景色
|
|
|
+ image.Mutate(g =>
|
|
|
+ {
|
|
|
+ g.BackgroundColor(Color.White);
|
|
|
+
|
|
|
+ //画图片的干扰线
|
|
|
+ for (int i = 0; i < 65; i++)
|
|
|
+ {
|
|
|
+ int x1 = random.StrictNext(width);
|
|
|
+ int x2 = random.StrictNext(width);
|
|
|
+ int y1 = random.StrictNext(height);
|
|
|
+ int y2 = random.StrictNext(height);
|
|
|
+ g.Draw(new SolidPen(new Color(new Rgba32((byte)random.StrictNext(255), (byte)random.StrictNext(255), (byte)random.StrictNext(255))), 1), new Path(new[] { new PointF(x1, y1), new PointF(x2, y2) }));
|
|
|
+ }
|
|
|
+
|
|
|
+ //渐变.
|
|
|
+ var brush = new LinearGradientBrush(new PointF(0, 0), new PointF(width, height), GradientRepetitionMode.Repeat, new ColorStop(0.5f, Color.Blue), new ColorStop(0.5f, Color.DarkRed));
|
|
|
+ g.DrawText(validateCode, font, brush, new PointF(3, 2));
|
|
|
+
|
|
|
+ //画图片的边框线
|
|
|
+ g.Draw(Color.Silver, 1, new RectangleF(0, 0, width - 1, height - 1));
|
|
|
+ });
|
|
|
+
|
|
|
+ //画图片的前景干扰点
|
|
|
+ for (int i = 0; i < 350; i++)
|
|
|
+ {
|
|
|
+ int x = random.StrictNext(image.Width);
|
|
|
+ int y = random.StrictNext(image.Height);
|
|
|
+ image[x, y] = new Rgba32(random.StrictNext(255), random.StrictNext(255), random.StrictNext(255));
|
|
|
+ }
|
|
|
+
|
|
|
+ //保存图片数据
|
|
|
+ var stream = new PooledMemoryStream();
|
|
|
+ image.Save(stream, WebpFormat.Instance);
|
|
|
+ stream.Position = 0;
|
|
|
+ return stream;
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 字符串宽度
|
|
|
+ /// </summary>
|
|
|
+ /// <param name="s"></param>
|
|
|
+ /// <param name="fontSize"></param>
|
|
|
+ /// <returns></returns>
|
|
|
+ public static float StringWidth(this string s, int fontSize = 1)
|
|
|
+ {
|
|
|
+ var fontFamily = SystemFonts.Families.FirstOrDefault(f => f.Name == "Microsoft YaHei UI");
|
|
|
+ if (fontFamily == default)
|
|
|
+ {
|
|
|
+ fontFamily = SystemFonts.Families.FirstOrDefault();
|
|
|
+ }
|
|
|
+
|
|
|
+ return TextMeasurer.MeasureSize(s, new TextOptions(fontFamily.CreateFont(fontSize))).Width;
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 字符串宽度
|
|
|
+ /// </summary>
|
|
|
+ /// <param name="s"></param>
|
|
|
+ /// <param name="fontName">字体名字，如：Microsoft YaHei UI</param>
|
|
|
+ /// <param name="fontSize"></param>
|
|
|
+ /// <returns></returns>
|
|
|
+ public static float StringWidth(this string s, string fontName, int fontSize = 1)
|
|
|
+ {
|
|
|
+ var fontFamily = SystemFonts.Families.FirstOrDefault(f => f.Name == fontName);
|
|
|
+ if (fontFamily == default)
|
|
|
+ {
|
|
|
+ throw new ArgumentException($"字体 {fontName} 不存在，请尝试其它字体！");
|
|
|
+ }
|
|
|
+
|
|
|
+ return TextMeasurer.MeasureSize(s, new TextOptions(fontFamily.CreateFont(fontSize))).Width;
|
|
|
+ }
|
|
|
+}
|
懒得勤快