CS代码:
public class CreatShui
{
public CreatShui()
{
//
// TODO: Add constructor logic here
//
this.Width = 270;
this.Height = 30;
this.FontFamily = "幼圆";
this.FontSize = 12;
this.FontStyle = FontStyle.Regular;
this.Adaptable = true;
this.Shadow = false;
this.Left = 0;
this.Top = 0;
this.Alpha = 255;
this.Red = 0;
this.Green = 0;
this.Blue = 0;
this.BackgroundImage = "";
this.Quality = 100;
this.BgColor = Color.FromArgb(0, 255, 255, 255);
}
/**/
/// <summary>
/// 字体
/// </summary>
public string FontFamily { get; set; }
/**/
/// <summary>
/// 文字大小
/// </summary>
public int FontSize { get; set; }
/**/
/// <summary>
/// 文字风格
/// </summary>
public FontStyle FontStyle { get; set; }
/**/
/// <summary>
/// 透明度0-255,255表示不透明
/// </summary>
public int Alpha { get; set; }
/**/
/// <summary>
/// 水印文字是否使用阴影
/// </summary>
public bool Shadow { get; set; }
public int Red { get; set; }
public int Green { get; set; }
public int Blue { get; set; }
/**/
/// <summary>
/// 底图
/// </summary>
public string BackgroundImage { get; set; }
/**/
/// <summary>
/// 水印文字的左边距
/// </summary>
public int Left { get; set; }
/**/
/// <summary>
/// 水印文字的顶边距
/// </summary>
public int Top { get; set; }
/**/
/// <summary>
/// 生成后的图片
/// </summary>
public string ResultImage { get; set; }
/**/
/// <summary>
/// 水印文本
/// </summary>
public string Text { get; set; }
/**/
/// <summary>
/// 生成图片的宽度
/// </summary>
public int Width { get; set; }
/**/
/// <summary>
/// 生成图片的高度
/// </summary>
public int Height { get; set; }
/**/
/// <summary>
/// 若文字太大,是否根据背景图来调整文字大小,默认为适应
/// </summary>
public bool Adaptable { get; set; }
public Color BgColor { get; set; }
/**/
/// <summary>
/// 输出图片质量,质量范围0-100,类型为long
/// </summary>
public long Quality { get; set; }
/**/
/// <summary>
/// 立即生成水印效果图
/// </summary>
/// <returns>生成成功返回true,否则返回false</returns>
public bool Create()
{
try
{
Bitmap bitmap;
Graphics g;
//使用纯背景色
if (this.BackgroundImage.Trim() == "")
{
bitmap = new Bitmap(this.Width, this.Height, PixelFormat.Format32bppArgb);//.Format64bppArgb);
g = Graphics.FromImage(bitmap);
g.Clear(this.BgColor);
}
else
{
bitmap = new Bitmap(Image.FromFile(this.BackgroundImage));
g = Graphics.FromImage(bitmap);
}
g.SmoothingMode = SmoothingMode.AntiAlias;
g.InterpolationMode = InterpolationMode.HighQualityBicubic;
g.CompositingQuality = CompositingQuality.HighQuality;
Font f = new Font(this.FontFamily, this.FontSize, this.FontStyle);
SizeF size = g.MeasureString(this.Text, f);
// 调整文字大小直到能适应图片尺寸
while (this.Adaptable == true && size.Width > bitmap.Width)
{
this.FontSize--;
f = new Font(this.FontFamily, this.FontSize, this.FontStyle);
size = g.MeasureString(this.Text, f);
}
Brush b = new SolidBrush(Color.FromArgb(this.Alpha, this.Red, this.Green, this.Blue));
StringFormat strFormat = new StringFormat();
strFormat.Alignment = StringAlignment.Near;
if (this.Shadow)
{
Brush b2 = new SolidBrush(Color.FromArgb(90, 0, 0, 0));
g.DrawString(this.Text, f, b2, this.Left + 2, this.Top + 1);
}
g.DrawString(this.Text, f, b, new PointF(this.Left, this.Top), strFormat);
bitmap.Save(this.ResultImage, ImageFormat.Png);
//MemoryStream ms = new MemoryStream();
////保存为Jpg类型
//bitmap.Save(ms, ImageFormat.Png);
//Image img = Image.FromStream(ms);
////bitmap.Save(ms, ImageFormat.Png);
//img.Save(this.ResultImage, ImageFormat.Png);
//img.Dispose();
bitmap.Dispose();
g.Dispose();
return true;
}
catch
{
return false;
}
}
}
调用方式:
Core.CreatShui cs = new Core.CreatShui();
cs.Text = "我是中国人";
cs.Create();