409 lines
12 KiB
C#
409 lines
12 KiB
C#
using SixLabors.ImageSharp.Processing;
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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.Drawing.Drawing2D;
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using System.Drawing.Imaging;
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using System.Linq;
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using System.Reflection;
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using System.Text;
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using System.Threading.Tasks;
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namespace Church.Net.Utility
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{
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public static class Format
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{
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public static string Get33BaseGuid()
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{
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byte[] gb = Guid.NewGuid().ToByteArray();
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ulong l = BitConverter.ToUInt64(gb, 0);
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return Parse.ULongToBase33(l);
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}
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private static Random rng = new Random();
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public static void Shuffle<T>(this IList<T> list)
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{
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int n = list.Count;
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while (n > 1)
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{
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n--;
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int k = rng.Next(n + 1);
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T value = list[k];
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list[k] = list[n];
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list[n] = value;
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}
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}
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}
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public static class StringHelper
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{
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public static string Get33BaseGuid()
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{
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byte[] gb = Guid.NewGuid().ToByteArray();
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ulong l = BitConverter.ToUInt64(gb, 0);
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return Parse.ULongToBase33(l);
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}
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}
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public static class Parse
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{
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#region "列舉型別宣告(empty)"
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#endregion
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#region "私有常數(empty)"
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#endregion
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#region "私有變數(empty)"
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#endregion
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#region "建構函式/解構函式"
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#endregion
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#region "介面實作(empty)"
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#endregion
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#region "公用方法和屬性"
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/// <summary>
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/// 嘗試轉換為整數型別，若轉換失敗則回傳0
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/// </summary>
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/// <param name="input"></param>
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/// <returns></returns>
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public static int ToInt(string input)
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{
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return ToInt(input, 0);
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}
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/// <summary>
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/// 嘗試轉換為整數型別，若轉換失敗則回傳 初始值
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/// </summary>
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/// <param name="input"></param>
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/// <param name="defaultValue"></param>
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/// <returns></returns>
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public static int ToInt(string input, int defaultValue)
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{
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int temp = 0;
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if (!int.TryParse(input, out temp))
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{
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temp = defaultValue;
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}
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return temp;
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}
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public static bool ToBool(string input, bool defaultValue = false)
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{
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bool temp = defaultValue;
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if (!bool.TryParse(input, out temp))
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{
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temp = defaultValue;
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}
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return temp;
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}
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#region Hex
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public static string ToHex(int value)
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{
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value = value + 10000;
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// Convert integer 182 as a hex in a string variable
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string hexValue = value.ToString("X");
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return hexValue;
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}
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public static int HexToInt(string value)
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{
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// Convert the hex string back to the number
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return int.Parse(value, System.Globalization.NumberStyles.HexNumber) - 10000;
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}
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#endregion
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#region 33進位計算
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private const string CharList = "0123456789ABCDEFGHJKLMNPQRSTUVWXY";
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public static String ULongToBase33(int input)
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{
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return ULongToBase33((ulong)input);
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}
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public static String ULongToBase33(long input)
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{
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return ULongToBase33((ulong)input);
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="input"></param>
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/// <param name="minLength"></param>
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/// <returns></returns>
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public static String ULongToBase33(ulong input)
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{
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if (input < 0) throw new ArgumentOutOfRangeException("input", input, "33 進位僅可計算正數");
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//ulong maxValue = GetLongMax(input);
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//ulong currentValue = input;
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char[] clistarr = CharList.ToCharArray();
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var result = new Stack<char>();
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while (input != 0)
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{
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result.Push(clistarr[input % 33]);
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input /= 33;
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}
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string encodeResult = new string(result.ToArray());
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//if (currentValue != maxValue)
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//{
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// string max32Value = ULongToBase32(maxValue);
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// while (encodeResult.Length < max32Value.Length)
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// {
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// encodeResult = "Y" + encodeResult;
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// }
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//}
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return encodeResult;
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="input"></param>
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/// <returns></returns>
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public static ulong Base33ToULong(string input)
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{
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ulong result = 0;
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try
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{
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//input = input.Replace("Y", "");
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var reversed = input.ToUpper().Reverse();
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int pos = 0;
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foreach (char c in reversed)
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{
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result += (ulong)CharList.IndexOf(c) * (ulong)Math.Pow(33, pos);
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pos++;
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}
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}
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catch (Exception e)
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{
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}
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return result;
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}
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#endregion
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#endregion
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#region "內部方法和屬性(empty)"
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#endregion
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#region "私用方法和屬性(empty)"
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#endregion
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#region "Form Event(empty)"
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#endregion
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}
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public static class EnumHelper<T>
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{
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public static IList<T> GetValues()
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{
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var enumValues = new List<T>();
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foreach (FieldInfo fi in typeof(T).GetFields(BindingFlags.Static | BindingFlags.Public))
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{
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enumValues.Add((T)Enum.Parse(typeof(T), fi.Name, false));
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}
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return enumValues;
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}
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public static T Parse(string value)
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{
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return (T)Enum.Parse(typeof(T), value, true);
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}
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public static IList<string> GetNames()
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{
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return System.Enum.GetNames(typeof(T));
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//return T.GetFields(BindingFlags.Static | BindingFlags.Public).Select(fi => fi.Name).ToList();
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}
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}
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public static class ImageHelper
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{
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public static Bitmap CreateThumbnail(string lcFilename, int lnWidth, int lnHeight)
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{
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System.Drawing.Bitmap bmpOut = null;
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try
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{
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Bitmap loBMP = new Bitmap(lcFilename);
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ImageFormat loFormat = loBMP.RawFormat;
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decimal lnRatio;
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int lnNewWidth = 0;
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int lnNewHeight = 0;
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if (loBMP.Width < lnWidth && loBMP.Height < lnHeight)
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return loBMP;
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if (loBMP.Width > loBMP.Height)
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{
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lnRatio = (decimal)lnWidth / loBMP.Width;
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lnNewWidth = lnWidth;
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decimal lnTemp = loBMP.Height * lnRatio;
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lnNewHeight = (int)lnTemp;
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}
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else
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{
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lnRatio = (decimal)lnHeight / loBMP.Height;
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lnNewHeight = lnHeight;
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decimal lnTemp = loBMP.Width * lnRatio;
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lnNewWidth = (int)lnTemp;
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}
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bmpOut = new Bitmap(lnNewWidth, lnNewHeight);
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Graphics g = Graphics.FromImage(bmpOut);
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g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
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g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
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g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
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g.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighQuality;
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g.FillRectangle(Brushes.White, 0, 0, lnNewWidth, lnNewHeight);
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g.DrawImage(loBMP, 0, 0, lnNewWidth, lnNewHeight);
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loBMP.Dispose();
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}
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catch
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{
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return null;
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}
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return bmpOut;
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}
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public static Bitmap SaveThumbnail(Bitmap image, string saveTo, int lnWidth, int lnHeight)
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{
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System.Drawing.Bitmap bmpOut = null;
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try
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{
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Bitmap loBMP = image;
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ImageFormat loFormat = loBMP.RawFormat;
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decimal lnRatio;
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int lnNewWidth = loBMP.Width;
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int lnNewHeight = loBMP.Height;
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if (loBMP.Width > lnWidth || loBMP.Height > lnHeight)
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{
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if (loBMP.Width > loBMP.Height)
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{
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lnRatio = (decimal)lnWidth / loBMP.Width;
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lnNewWidth = lnWidth;
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decimal lnTemp = loBMP.Height * lnRatio;
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lnNewHeight = (int)lnTemp;
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}
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else
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{
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lnRatio = (decimal)lnHeight / loBMP.Height;
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lnNewHeight = lnHeight;
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decimal lnTemp = loBMP.Width * lnRatio;
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lnNewWidth = (int)lnTemp;
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}
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}
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bmpOut = new Bitmap(lnNewWidth, lnNewHeight);
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Graphics g = Graphics.FromImage(bmpOut);
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g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
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g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
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g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
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g.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighQuality;
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g.FillRectangle(Brushes.White, 0, 0, lnNewWidth, lnNewHeight);
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g.DrawImage(loBMP, 0, 0, lnNewWidth, lnNewHeight);
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bmpOut.Save(saveTo,ImageFormat.Jpeg);
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bmpOut.Dispose();
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loBMP.Dispose();
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}
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catch
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{
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return null;
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}
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return bmpOut;
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}
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public static Bitmap Resize(this Bitmap bmp, int width, int height)
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{
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Bitmap result = new Bitmap(width, height);
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using (Graphics g = Graphics.FromImage(result))
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{
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g.DrawImage(bmp, 0, 0, width, height);
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}
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return result;
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}
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public static Bitmap Scalling(this Bitmap bmp, int percentage)
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{
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return bmp.Resize(bmp.Width * percentage / 100, bmp.Height * percentage / 100);
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}
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public static void Scalling(this SixLabors.ImageSharp.Image image, int percentage)
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{
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var scale = (double)percentage/100;
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var scaleWidth = (int)(image.Width * scale);
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var scaleHeight = (int)(image.Height * scale);
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image.Mutate(o => o.Resize(new SixLabors.ImageSharp.Size(scaleWidth, scaleHeight)));
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}
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public static Bitmap Superimpose(Bitmap largeBmp, Bitmap smallBmp, int? x = null, int? y = null)
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{
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Graphics g = Graphics.FromImage(largeBmp);
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g.CompositingMode = CompositingMode.SourceOver;
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smallBmp.MakeTransparent();
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int margin = 5;
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if (!x.HasValue)
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{
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x = largeBmp.Width - smallBmp.Width - margin;
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}
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if (!y.HasValue)
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{
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y = largeBmp.Height - smallBmp.Height - margin;
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}
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var scale = 0.8;
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var scaleWidth = (int)(smallBmp.Width * scale);
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var scaleHeight = (int)(smallBmp.Height * scale);
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g.DrawImage(smallBmp, new Rectangle(x.Value, y.Value, scaleWidth, scaleHeight));
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return largeBmp;
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}
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}
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}
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