8b41f58f5c
------ #### ryControlsV4 V3.0.2107.0101 - *.[新增]新增Sheng.Winform.Controls部分控件。 #### RyWeb V3.0.2107.0101 - *.[新增]QuickWeb新增引用页设置。 #### MyDbV4 V3.0.2107.0101 - *.[新增]支持忽略大小写的替换功能。
495 lines
18 KiB
C#
495 lines
18 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Drawing;
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using System.Drawing.Imaging;
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using System.IO;
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using System.Drawing.Drawing2D;
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using System.Runtime.InteropServices;
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using System.Diagnostics;
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namespace Sheng.Winform.Controls.Drawing
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{
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public static class DrawingTool
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{
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#region GetImage
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public static Image GetImage(string filePath)
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{
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return GetImage(filePath, true);
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}
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public static Image GetImage(string filePath, bool memberCopy)
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{
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return GetImage(filePath, memberCopy, false);
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}
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/// <summary>
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/// 从文件中获取Image对象
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/// 这个函数的主要功能是处理一些ico文件
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/// 一些ico文件的格式可能比较新，直接Image.FormFile，会报内存不足的异常
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/// </summary>
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/// <param name="filePath"></param>
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/// <param name="memberCopy">是否将文件读入内存操作，如果为false,将直接返回Image.FromFile，在此情况下，
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/// 必须手动释放Image对象，否则文件将一直处于占用状态，如果为true,则在内存中拷贝副本</param>
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/// <returns></returns>
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public static Image GetImage(string filePath,bool memberCopy, bool markNotFind)
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{
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FileInfo file = new FileInfo(filePath);
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Image image = null;
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if (!file.Exists)
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{
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if (markNotFind)
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{
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image = new Bitmap(16, 16);
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Mark.FileNotFind(image);
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return image;
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}
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else
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{
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return null;
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}
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}
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switch (file.Extension.ToLower())
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{
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case ".ico": try
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{
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Icon icon = new Icon(file.FullName);
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image = icon.ToBitmap();
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}
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catch
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{
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image = new Bitmap(16, 16);
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Mark.FileCanNotRead(image);
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}
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break;
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default:
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if (memberCopy)
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{
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Image imgTemp = Image.FromFile(file.FullName);
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image = new System.Drawing.Bitmap(imgTemp);
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imgTemp.Dispose();
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}
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else
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{
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// Image.FromFile(file.FullName);会使文件一直处于被占用状态，必须手动释放
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image = Image.FromFile(file.FullName);
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}
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break;
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}
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return image;
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}
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#endregion
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#region ImageToIcon
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/// <summary>
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/// 将图像转为Icon对象,使用png格式
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/// </summary>
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/// <param name="image"></param>
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/// <returns></returns>
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public static Icon ImageToIcon(Image image)
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{
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return ImageToIcon(image, ImageFormat.Png);
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}
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/// <summary>
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/// 将图像转为Icon对象
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/// </summary>
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/// <param name="image"></param>
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/// <param name="format"></param>
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/// <returns></returns>
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public static Icon ImageToIcon(Image image, ImageFormat format)
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{
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System.IO.Stream ms = new MemoryStream();
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image.Save(ms, format);
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Icon icon = Icon.FromHandle(new Bitmap(ms).GetHicon());
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ms.Close();
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return icon;
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}
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#endregion
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#region GetScaleImage
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/// <summary>
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/// 返回适应指定容器大小的图像
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/// 如果图像的尺寸(长或宽)超出了容器范围,将按比例获取图像的缩略图返回,否则直接返回图像
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/// 此方法最终调用 Image.GetThumbnailImage
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/// 但是注意,在指定的容器尺寸过小时,返回的Image尺寸不可知,是在为了显示16x16的小缩略图是发现了此问题
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/// 使用 GetScaleImage
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/// </summary>
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/// <param name="image"></param>
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/// <param name="containerWidth"></param>
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/// <param name="containerHeight"></param>
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/// <returns></returns>
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public static Image GetAutoScaleThumbnailImage(Image image, int containerWidth, int containerHeight)
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{
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if (image.Size.Width > containerWidth ||
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image.Size.Height > containerHeight)
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{
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double height = containerHeight;
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double width = containerWidth;
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double new_height;
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double new_width;
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double scale;
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new_height = height;
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new_width = width;
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if ((image.Width > width) || (image.Height > height))
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{
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if (image.Width > width)
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{
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scale = image.Width / width;
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new_width = image.Width / scale;
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new_height = image.Height / scale;
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}
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else
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{
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scale = image.Height / height;
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new_width = image.Width / scale;
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new_height = image.Height / scale;
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}
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}
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return image.GetThumbnailImage(Convert.ToInt32(new_width), Convert.ToInt32(new_height),
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thumbnailCallback, IntPtr.Zero);
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}
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else
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{
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return image;
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}
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}
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static Image.GetThumbnailImageAbort thumbnailCallback = new Image.GetThumbnailImageAbort(ThumbnailCallback);
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private static bool ThumbnailCallback()
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{
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return false;
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}
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/// <summary>
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/// 返回适应指定容器大小的图像
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/// 在需要的情况下,此方法创建一个新对象,进行绘制
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/// </summary>
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/// <param name="image"></param>
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/// <param name="containerWidth"></param>
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/// <param name="containerHeight"></param>
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/// <returns></returns>
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public static Image GetScaleImage(Image image, Size size)
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{
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if (image.Size.Width > size.Width ||
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image.Size.Height > size.Height)
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{
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double width = size.Width;
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double height = size.Height;
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double new_width;
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double new_height;
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double scale;
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new_height = height;
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new_width = width;
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if ((image.Width > width) || (image.Height > height))
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{
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if (image.Width > width)
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{
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scale = image.Width / width;
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new_width = image.Width / scale;
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new_height = image.Height / scale;
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}
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else
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{
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scale = image.Height / height;
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new_width = image.Width / scale;
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new_height = image.Height / scale;
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}
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}
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Bitmap bitmap = new Bitmap(Convert.ToInt32(new_width), Convert.ToInt32(new_height));
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Graphics g = Graphics.FromImage(bitmap);
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g.DrawImage(image, 0, 0, bitmap.Width, bitmap.Height);
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return bitmap;
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}
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else
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{
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return image;
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}
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}
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/// <summary>
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/// 返回适应指定容器大小的图像
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/// 在需要的情况下,此方法创建一个新对象,进行绘制
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/// </summary>
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/// <param name="image"></param>
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/// <param name="containerWidth"></param>
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/// <param name="containerHeight"></param>
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/// <returns></returns>
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public static Image GetScaleImage(Image image, int containerWidth, int containerHeight)
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{
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if (containerWidth == null || containerHeight == null)
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{
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Debug.Assert(false, "containerWidth 或 containerHeight为空");
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throw new ArgumentNullException();
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}
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return GetScaleImage(image, new Size(containerWidth, containerHeight));
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}
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#endregion
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/// <summary>
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/// Gets the bounding rectangle of an image required to fit
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/// in to the given rectangle keeping the image aspect ratio.
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/// </summary>
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/// <param name="image">The source image.</param>
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/// <param name="fit">The rectangle to fit in to.</param>
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/// <param name="hAlign">Horizontal image aligment in percent.</param>
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/// <param name="vAlign">Vertical image aligment in percent.</param>
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/// <returns>New image size.</returns>
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public static Rectangle GetSizedImageBounds(Image image, Rectangle fit, float hAlign, float vAlign)
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{
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if (hAlign < 0 || hAlign > 100.0f)
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throw new ArgumentException("hAlign must be between 0.0 and 100.0 (inclusive).", "hAlign");
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if (vAlign < 0 || vAlign > 100.0f)
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throw new ArgumentException("vAlign must be between 0.0 and 100.0 (inclusive).", "vAlign");
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Size scaled = GetSizedImageBounds(image, fit.Size);
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int x = fit.Left + (int)(hAlign / 100.0f * (float)(fit.Width - scaled.Width));
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int y = fit.Top + (int)(vAlign / 100.0f * (float)(fit.Height - scaled.Height));
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return new Rectangle(x, y, scaled.Width, scaled.Height);
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}
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/// <summary>
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/// Gets the bounding rectangle of an image required to fit
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/// in to the given rectangle keeping the image aspect ratio.
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/// The image will be centered in the fit box.
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/// </summary>
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/// <param name="image">The source image.</param>
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/// <param name="fit">The rectangle to fit in to.</param>
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/// <returns>New image size.</returns>
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public static Rectangle GetSizedImageBounds(Image image, Rectangle fit)
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{
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return GetSizedImageBounds(image, fit, 50.0f, 50.0f);
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}
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/// <summary>
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/// Gets the scaled size of an image required to fit
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/// in to the given size keeping the image aspect ratio.
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/// </summary>
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/// <param name="image">The source image.</param>
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/// <param name="fit">The size to fit in to.</param>
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/// <returns>New image size.</returns>
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public static Size GetSizedImageBounds(Image image, Size fit)
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{
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float f = System.Math.Max((float)image.Width / (float)fit.Width, (float)image.Height / (float)fit.Height);
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if (f < 1.0f) f = 1.0f; // Do not upsize small images
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int width = (int)System.Math.Round((float)image.Width / f);
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int height = (int)System.Math.Round((float)image.Height / f);
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return new Size(width, height);
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}
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#region RoundedRect
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/// <summary>
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/// 获取一个圆角矩形
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/// </summary>
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/// <param name="width"></param>
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/// <param name="height"></param>
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/// <param name="radius">角度</param>
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/// <returns></returns>
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public static GraphicsPath RoundedRect(int width, int height, int radius)
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{
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RectangleF baseRect = new RectangleF(0, 0, width, height);
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return RoundedRect(baseRect, radius);
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}
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/// <summary>
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/// 获取一个圆角矩形
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/// </summary>
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/// <param name="width"></param>
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/// <param name="height"></param>
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/// <param name="radius">角度</param>
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/// <returns></returns>
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public static GraphicsPath RoundedRect(RectangleF baseRect, int radius)
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{
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//RectangleF baseRect = new RectangleF(0, 0, width, height);
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float diameter = radius * 2.0f;
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SizeF sizeF = new SizeF(diameter, diameter);
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RectangleF arc = new RectangleF(baseRect.Location, sizeF);
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GraphicsPath path = new GraphicsPath();
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// top left arc
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path.AddArc(arc, 180, 90);
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// top right arc
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arc.X = baseRect.Right - diameter;
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path.AddArc(arc, 270, 90);
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// bottom right arc
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arc.Y = baseRect.Bottom - diameter;
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path.AddArc(arc, 0, 90);
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// bottom left arc
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arc.X = baseRect.Left;
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path.AddArc(arc, 90, 90);
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path.CloseFigure();
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return path;
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}
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#endregion
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#region GetArrowPath
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public static GraphicsPath GetArrowPath(PointF startPoint, PointF endPoint)
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{
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return GetArrowPath(startPoint, endPoint, 7);
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}
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public static GraphicsPath GetArrowPath(PointF startPoint, PointF endPoint, double arrowLength)
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{
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return GetArrowPath(startPoint, endPoint, arrowLength, 1);
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}
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/// <summary>
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/// 返回一个表示箭头的Path
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/// 如果开始坐标和结束坐标之间的距离大于箭头的大小，箭头向结束坐标对齐，顶着结束坐标
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/// </summary>
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/// <param name="startPoint">开始坐标</param>
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/// <param name="endPoint">结束坐标（顶点，方向）</param>
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/// <param name="arrowLength">箭头的长短，大小</param>
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/// <param name="relativeValue">箭头的粗细</param>
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/// <returns></returns>
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public static GraphicsPath GetArrowPath(PointF startPoint, PointF endPoint,
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double arrowLength, double relativeValue)
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{
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//http://www.cnblogs.com/jasenkin/archive/2011/01/04/graphic_drawing_arrow_head_II.html
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double distance = Math.Abs(Math.Sqrt(
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(startPoint.X - endPoint.X) * (startPoint.X - endPoint.X) +
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(startPoint.Y - endPoint.Y) * (startPoint.Y - endPoint.Y)));
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if (distance == 0)
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{
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return new GraphicsPath();
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}
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double xa = endPoint.X + arrowLength * ((startPoint.X - endPoint.X)
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+ (startPoint.Y - endPoint.Y) / relativeValue) / distance;
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double ya = endPoint.Y + arrowLength * ((startPoint.Y - endPoint.Y)
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- (startPoint.X - endPoint.X) / relativeValue) / distance;
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double xb = endPoint.X + arrowLength * ((startPoint.X - endPoint.X)
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- (startPoint.Y - endPoint.Y) / relativeValue) / distance;
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double yb = endPoint.Y + arrowLength * ((startPoint.Y - endPoint.Y)
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+ (startPoint.X - endPoint.X) / relativeValue) / distance;
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PointF[] polygonPoints =
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{
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new PointF(endPoint.X , endPoint.Y),
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new PointF( (float)xa , (float)ya),
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new PointF( (float)xb , (float)yb)
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};
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GraphicsPath path = new GraphicsPath();
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path.AddLines(polygonPoints);
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return path;
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}
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#endregion
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#region Mark
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/// <summary>
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/// 在指定的Image上绘制特定标记
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/// </summary>
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public static class Mark
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{
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/// <summary>
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/// 文件不存在
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/// </summary>
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/// <param name="img"></param>
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[Obsolete("改用 FileNotFind(Size size)")]
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public static void FileNotFind(Image image)
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{
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if (image == null)
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{
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Debug.Assert(false, "image = null");
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return;
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}
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Graphics g = Graphics.FromImage(image);
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g.DrawRectangle(Pens.Red, 0, 0, image.Width - 1, image.Height - 1);
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g.DrawLine(Pens.Red, 0, 0, image.Width, image.Height);
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g.DrawLine(Pens.Red, image.Width, 0, 0, image.Height);
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g.Dispose();
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}
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/// <summary>
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/// 文件不存在
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/// </summary>
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/// <param name="size"></param>
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public static Image FileNotFind(Size size)
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{
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Image image = new Bitmap(size.Width, size.Height);
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Graphics g = Graphics.FromImage(image);
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g.Clear(Color.White);
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g.DrawRectangle(Pens.Red, 0, 0, image.Width - 1, image.Height - 1);
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g.DrawLine(Pens.Red, 0, 0, image.Width, image.Height);
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g.DrawLine(Pens.Red, image.Width, 0, 0, image.Height);
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g.Dispose();
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return image;
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}
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/// <summary>
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/// 无法读取文件
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/// </summary>
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/// <param name="image"></param>
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[Obsolete("改用 FileCanNotRead(Size size)")]
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public static void FileCanNotRead(Image image)
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{
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if (image == null)
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{
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Debug.Assert(false, "image = null");
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return;
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}
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Graphics g = Graphics.FromImage(image);
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g.DrawRectangle(Pens.Red, 0, 0, image.Width - 1, image.Height - 1);
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g.DrawLine(Pens.Red, 0, 0, image.Width, image.Height);
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g.DrawLine(Pens.Red, image.Width, 0, 0, image.Height);
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g.Dispose();
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}
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public static Image FileCanNotRead(Size size)
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{
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Image image = new Bitmap(size.Width, size.Height);
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Graphics g = Graphics.FromImage(image);
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g.Clear(Color.White);
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g.DrawRectangle(Pens.Red, 0, 0, image.Width - 1, image.Height - 1);
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g.DrawLine(Pens.Red, 0, 0, image.Width, image.Height);
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g.DrawLine(Pens.Red, image.Width, 0, 0, image.Height);
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g.Dispose();
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return image;
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}
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}
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#endregion
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}
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}
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