248 lines
9.8 KiB
C#
248 lines
9.8 KiB
C#
using Api.Framework.Tools;
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using System;
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using System.Collections.Generic;
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using System.Drawing;
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using System.IO;
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using System.Linq;
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using System.Net;
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using System.Text;
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using System.Threading.Tasks;
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namespace TBAppraisalTools
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{
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class Tools
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{
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/// <summary>
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/// 把directory文件夹里的png文件生成为gif文件，放在giffile
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/// </summary>
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/// <param name="files">图片的数组</param>
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/// <param name="giffile">gif保存路径</param>
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/// <param name="time">每帧的时间/ms</param>
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/// <param name="repeat">是否重复</param>
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public static string PngsToGif(string[] files, string giffile, int time = 0, bool repeat = false)
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{
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try
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{
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//一般文件名按顺序排
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AnimatedGifEncoder e = new AnimatedGifEncoder();
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e.Start(giffile);
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//每帧播放时间
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e.SetDelay(time);
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//1：不重复，0：重复
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e.SetRepeat(repeat ? 0 : -1);
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for (int i = 0, count = files.Length; i < count; i++)
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{
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if (!string.IsNullOrEmpty(files[i]) && File.Exists(files[i]))
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e.AddFrame(Tools.ReadImageFile(files[i]));
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}
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e.Finish();
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return giffile;
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}
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catch (Exception ex)
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{
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throw ex;
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}
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}
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/// <summary>
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/// 按比例缩放图片
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/// </summary>
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/// <param name="SourceImage">图片路径</param>
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/// <param name="TargetWidth">宽度</param>
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/// <param name="TargetHeight">高度</param>
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/// <returns></returns>
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public static Image ZoomPicture(Image SourceImage, int TargetWidth, int TargetHeight)
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{
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int IntWidth; //新的图片宽
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int IntHeight; //新的图片高
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try
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{
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System.Drawing.Imaging.ImageFormat format = SourceImage.RawFormat;
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Bitmap SaveImage = new Bitmap(TargetWidth, TargetHeight);
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Graphics g = Graphics.FromImage(SaveImage);
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g.Clear(Color.White);
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if (SourceImage.Width > TargetWidth && SourceImage.Height <= TargetHeight)//宽度比目的图片宽度大，长度比目的图片长度小
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{
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IntWidth = TargetWidth;
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IntHeight = (IntWidth * SourceImage.Height) / SourceImage.Width;
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}
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else if (SourceImage.Width <= TargetWidth && SourceImage.Height > TargetHeight)//宽度比目的图片宽度小，长度比目的图片长度大
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{
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IntHeight = TargetHeight;
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IntWidth = (IntHeight * SourceImage.Width) / SourceImage.Height;
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}
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else if (SourceImage.Width <= TargetWidth && SourceImage.Height <= TargetHeight) //长宽比目的图片长宽都小
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{
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IntHeight = SourceImage.Width;
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IntWidth = SourceImage.Height;
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}
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else//长宽比目的图片的长宽都大
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{
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IntWidth = TargetWidth;
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IntHeight = (IntWidth * SourceImage.Height) / SourceImage.Width;
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if (IntHeight > TargetHeight)//重新计算
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{
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IntHeight = TargetHeight;
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IntWidth = (IntHeight * SourceImage.Width) / SourceImage.Height;
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}
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}
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g.DrawImage(SourceImage, (TargetWidth - IntWidth) / 2, (TargetHeight - IntHeight) / 2, IntWidth, IntHeight);
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SourceImage.Dispose();
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return SaveImage;
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}
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catch (Exception ex)
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{
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}
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return null;
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}
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/// <summary>
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/// 通过FileStream 来打开文件，这样就可以实现不锁定Image文件，到时可以让多用户同时访问Image文件
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/// </summary>
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/// <param name="path"></param>
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/// <returns></returns>
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public static Bitmap ReadImageFile(string path)
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{
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FileStream fs = File.OpenRead(path); //OpenRead
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int filelength = 0;
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filelength = (int)fs.Length; //获得文件长度
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Byte[] image = new Byte[filelength]; //建立一个字节数组
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fs.Read(image, 0, filelength); //按字节流读取
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Image result = Image.FromStream(fs);
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fs.Close();
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Bitmap bit = new Bitmap(result);
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return bit;
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}
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/// <summary>
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/// 下载网络图片
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/// </summary>
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/// <param name="url">图片的链接</param>
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/// <param name="path">下载图片保存的路径</param>
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/// <param name="postfix"></param>
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public static void DownloadImage(string url, string path)
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{
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HttpWebResponse rsp = null;
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try
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{
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url = (url.StartsWith("http") ? url : ("http:" + url));
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HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
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req.ServicePoint.Expect100Continue = false;
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req.Method = "GET";
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req.KeepAlive = true;
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req.ContentType = "image/*";
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rsp = (HttpWebResponse)req.GetResponse();
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}
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catch (Exception ex)
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{
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throw ex;
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}
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Stream stream = null;
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try
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{
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// 以字符流的方式读取HTTP响应
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stream = rsp.GetResponseStream();
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Image.FromStream(stream).Save(path);
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}
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catch
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{
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if (stream != null) stream.Close();
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if (rsp != null) rsp.Close();
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}
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finally
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{
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// 释放资源
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if (stream != null) stream.Close();
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if (rsp != null) rsp.Close();
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}
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}
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/// <summary>
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/// 图片放大缩小 变形操作
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/// </summary>
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/// <param name="img"></param>
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/// <param name="rec"></param>
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/// <param name="size"></param>
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/// <returns></returns>
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public static Bitmap CutEllipse(Image img, Rectangle rec, Size size)
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{
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Bitmap bitmap = new Bitmap(size.Width, size.Height);
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using (Graphics g = Graphics.FromImage(bitmap))
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{
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using (TextureBrush br = new TextureBrush(img, System.Drawing.Drawing2D.WrapMode.Clamp, rec))
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{
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br.ScaleTransform(bitmap.Width / (float)rec.Width, bitmap.Height / (float)rec.Height);
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g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
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g.FillEllipse(br, new Rectangle(Point.Empty, size));
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//g.FillRectangle(br, new Rectangle(Point.Empty, size));
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}
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}
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return bitmap;
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}
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/// <summary>
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/// 这方法将以前的地址更新成新的目录地址(防止用户更改了软件目录)
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/// </summary>
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/// <param name="currentFile">之前完整的路径</param>
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/// <param name="node">查找的节点(文件名前的那一段内容)</param>
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/// <param name="newPath">软件的目录</param>
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/// <returns></returns>
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public static string RefreshFileAddress(string currentFile, string node, string newPath)
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{
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var index = currentFile.IndexOf(node);
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var imageNick = currentFile.Remove(0, index + node.Length);//获取图片名和后缀
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return Util.MapFile(imageNick, newPath);//当前项目的完成图片路径(以上操作是为了怕用户转移程序路径)
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}
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/// <summary>
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/// 更新文本格式,优惠券模板中label超出背景部分自动换行(比如标题过长)
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/// </summary>
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/// <param name="totalWidth">总背景的宽</param>
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/// <param name="startPoint">文本的X坐标(起点)</param>
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/// <param name="srcText">文本内容</param>
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/// <param name="tWidth">格式化后的文本真正的宽</param>
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/// <returns></returns>
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public static string RefreshTextFormat(int totalWidth, int startPoint, string srcText, float tWidth)
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{
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var surLocation = totalWidth - startPoint;
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if (surLocation < tWidth)
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{
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var nuit = Math.Ceiling(tWidth / srcText.Length);//一个字的宽度
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var rowNum = (int)Math.Ceiling(surLocation / nuit);//大约一列最多能放几个字
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double rows = srcText.Length / rowNum;//行数
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int count = (int)Math.Ceiling(rows);
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for (var i = 1; i <= count; i++)
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{
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srcText = srcText.Insert(rowNum * i, "\r\n");
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}
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}
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return srcText;
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}
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/// <summary>
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/// 通过路径删除所有的文件,以及文件夹
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/// </summary>
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/// <param name="srcPath"></param>
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public static void DelectDir(string srcPath)
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{
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DirectoryInfo dir = new DirectoryInfo(srcPath);
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FileSystemInfo[] fileinfo = dir.GetFileSystemInfos(); //返回目录中所有文件和子目录
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foreach (FileSystemInfo i in fileinfo)
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{
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if (i is DirectoryInfo) //判断是否文件夹
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{
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DirectoryInfo subdir = new DirectoryInfo(i.FullName);
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subdir.Delete(true); //删除子目录和文件
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}
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else
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{
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File.Delete(i.FullName); //删除指定文件
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}
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}
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}
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}
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}
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