当前文件路径：NetCMSv15/NetCMS.Content/Common/FSImage.cs 
1
//======================================================
2//== (c)2008 aspxcms inc by NeTCMS v1.0 ==
3//== Forum:bbs.aspxcms.com ==
4//== Website:www.aspxcms.com ==
5//======================================================
6using System;
7using System.Collections.Generic;
8using System.Text;
9using System.IO;
10using System.Web;
11using System.Drawing;
12using System.Drawing.Imaging;
13
14namespace NetCMS.Content.Common
15
...{
16
/**//// <summary>
17
/// 生成水印、缩略图、生成有指定内容的图片
18
/// </summary>
19 public class FSImage
20 ...{
21 private int _width;
22 private int _height;
23 private string _title = "www.netcms"; //文字标题
24 private Color _bgcolor = Color.White;
25 private int _fontsize = 14; //字号
26 private string _familyname = "仿宋"; //字体
27 private FontStyle _fontstyle = FontStyle.Regular;
28 private Color _forcecolor = Color.Black;
29 private string _filepath = ""; //获取路径及文件名
30 private PointF _txtpos;
31 private long _quality =100;
32 private string _waterpos = "0";
33 private string _waterpath = "";
34 /**//// <summary>
35 /// 构建函数
36 /// </summary>
37 /// <param name="width">生成图片的宽度。
38 /// 如果小于或等于零：高度也小于或等于零，则图片按原图的大小（水印或缩略图）或标题文字的大小生成图片；如高度大于零，则按高度优先比例缩放原图
39 /// 如果大于零：高度也大于零，按指定大小生成新图片；如果高度小于等于零，则按宽度优先比较缩放图片</param>
40 /// <param name="height">图片高度，见图片宽度注释</param>
41 /// <param name="filepath">原文件物理磁盘路径（水印、缩略图）或保存文件路径（按文字生成图片）</param>
42 public FSImage(int width, int height, string filepath)
43 ...{
44 _txtpos = new PointF(-1, -1);
45 _width = width;
46 _height = height;
47 _filepath = filepath.Replace("/","\\");
48 }
49 /**//// <summary>
50 /// 水印或生成图片的文字,默认为:www.netcms
51 /// </summary>
52 public string Title
53 ...{
54 set ...{ _title = value; }
55 get ...{ return _title; }
56 }
57 /**//// <summary>
58 /// 以像素为单位的字体大小，默认为：14
59 /// </summary>
60 public int FontSize
61 ...{
62 get ...{ return _fontsize; }
63 set ...{ _fontsize = value; }
64 }
65 /**//// <summary>
66 /// 设置新图片的背景色,默认为透明
67 /// </summary>
68 public Color BackGroudColor
69 ...{
70 get ...{ return _bgcolor; }
71 set ...{ _bgcolor = value; }
72 }
73 /**//// <summary>
74 /// 采用的字体名称,默认为仿宋体
75 /// </summary>
76 public string FontFamilyName
77 ...{
78 get ...{ return _familyname; }
79 set ...{ _familyname = value; }
80 }
81 /**//// <summary>
82 /// 设置字体样式,默认为普通文本
83 /// </summary>
84 public FontStyle StrStyle
85 ...{
86 set ...{ _fontstyle = value; }
87 get ...{ return _fontstyle; }
88 }
89 /**//// <summary>
90 /// 水印文字的颜色,默认为红色
91 /// </summary>
92 public Color FontColor
93 ...{
94 set ...{ _forcecolor = value; }
95 get ...{ return _forcecolor; }
96 }
97 /**//// <summary>
98 /// 水印文本的位置坐标,以图片的左上角为原点,默认位置为图片的右下角
99 /// 如果x座标小于零则文字在图片的右边,如果y座标小于0则文字在图片的下边
100 /// 设置时注意这个位置是从文字的左上角为原点,如(0,0)表示文字在图片的左上角
101 /// </summary>
102 public PointF TextPos
103 ...{
104 set ...{ _txtpos.X = value.X; _txtpos.Y = value.Y; }
105 get ...{ return _txtpos; }
106 }
107
108 /**//// <summary>
109 /// 输出图片质量，质量范围0-100,类型为long
110 /// </summary>
111 public long Quality
112 ...{
113 get ...{ return _quality; }
114 set ...{ _quality = value; }
115 }
116
117 /**//// <summary>
118 /// 水印位置
119 /// </summary>
120 public string Waterpos
121 ...{
122 get ...{ return _waterpos; }
123 set ...{ _waterpos = value; }
124 }
125
126 /**//// <summary>
127 /// 水印图片宽度
128 /// </summary>
129 public int Width
130 ...{
131 get ...{ return _width; }
132 set ...{ _width = value; }
133 }
134
135 /**//// <summary>
136 /// 水印图片高度
137 /// </summary>
138 public int Height
139 ...{
140 get ...{ return _height; }
141 set ...{ _height = value; }
142 }
143
144 /**//// <summary>
145 /// 水印图片地址
146 /// </summary>
147 public string WaterPath
148 ...{
149 get ...{ return _waterpath; }
150 set ...{ _waterpath = value; }
151 }
152
153 /**//// <summary>
154 /// 生成文字水印
155 /// </summary>
156 public void Watermark()
157 ...{
158 if (_title == null || _title.Equals(""))
159 throw new NullReferenceException("图片标题为空!");
160 ImageFormat format = GetFormat();
161 if (!File.Exists(_filepath))
162 throw new FileNotFoundException("指定路径的文件不存在");
163 Graphics g;
164 Bitmap bitmap = GetBitmap(out g);
165 Font f = new Font(_familyname, _fontsize, _fontstyle, GraphicsUnit.Pixel);
166 SizeF size = g.MeasureString(_title, f);
167 switch (_waterpos)
168 ...{
169 case "1":
170 _txtpos.X = ((float)_width * (float).01) + (size.Width / 2) - 20;
171 _txtpos.Y = (float)_height * (float).01;
172 break;
173 case "3":
174 _txtpos.X = ((float)_width * (float).99) - (size.Width);
175 _txtpos.Y = (float)_height * (float).01;
176 break;
177 case "4":
178 _txtpos.X = ((float)_width * (float).99) - (size.Width);
179 _txtpos.Y = ((float)_height * (float).99) - size.Height;
180 break;
181 case "2":
182 _txtpos.X = ((float)_width * (float).01) + (size.Width / 2) - 20;
183 _txtpos.Y = ((float)_height * (float).99) - size.Height;
184 break;
185 default:
186 _txtpos.X = ((float)_width * (float).50) - 20;
187 _txtpos.Y = ((float)_height * (float).50);
188 break;
189 }
190 Brush b = new SolidBrush(_forcecolor);
191 g.DrawString(_title, f, b, _txtpos);
192 g.Dispose();
193 bitmap.Save(_filepath, format);
194 bitmap.Dispose();
195 }
196 /**//// <summary>
197 /// 生成缩略图
198 /// </summary>
199 /// <param name="newpath">缩略图的保存物理路径（包括文件名），如果为null或空则覆盖原图</param>
200 public void Thumbnail(string newpath)
201 ...{
202 ImageFormat format = GetFormat();
203 if (!File.Exists(_filepath))
204 throw new FileNotFoundException("指定路径的文件不存在");
205 Graphics g;
206 Bitmap bitmap = GetBitmap(out g);
207 if (newpath == null || newpath.Trim().Equals(""))
208 bitmap.Save(_filepath, format);
209 else
210 ...{
211 newpath = newpath.Replace("/","\\");
212 if (newpath.IndexOf("\\") > 0)
213 ...{
214 string dir = newpath.Substring(0, newpath.LastIndexOf("\\"));
215 if (!Directory.Exists(dir))
216 ...{
217 Directory.CreateDirectory(dir);
218 }
219 }
