cyf
264 lines
9.5 KiB
C#
264 lines
9.5 KiB
C#
/******************************
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* 说明：绘制文本旋转类
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* 创建人：龚宇超
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* 创建日期：2017-07-24
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* 修改人：
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* 修改日期：
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* 修改备注：
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* 版本：1.0.0.0
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******************************/
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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.Drawing2D;
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using System.Text.RegularExpressions;
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namespace Lskj.Util
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{
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/// <summary>
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/// 绘制文本旋转
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/// </summary>
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public class GraphicsText
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{
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private static string[] words = { "A", "B", "C", "D", "E", "F", "G", " H", " I", " J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z" };
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/// <summary>
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/// GDI+ 绘图图面
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/// </summary>
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public Graphics Graphics;
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/// <summary>
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/// <para>说明：绘制文本旋转</para>
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/// <para>创建人：龚宇超</para>
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/// <para>创建日期：2017-07-24 </para>
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/// <para>修改人：</para>
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/// <para>修改日期：</para>
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/// <para>修改备注：</para>
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/// <para>版本：1.0</para>
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/// </summary>
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/// <param name="s">文本</param>
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/// <param name="font">字体</param>
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/// <param name="brush">填充</param>
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/// <param name="layoutRectangle">局部矩形</param>
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/// <param name="format">布局方式</param>
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/// <param name="angle">角度</param>
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public void DrawString(string s, Font font, Brush brush, RectangleF layoutRectangle, StringFormat format, float angle)
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{
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// 求取字符串大小
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SizeF size = Graphics.MeasureString(s, font);
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// 根据旋转角度，求取旋转后字符串大小
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SizeF sizeRotate = ConvertSize(size, angle);
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// 根据旋转后尺寸、布局矩形、布局方式计算文本旋转点
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PointF rotatePt = GetRotatePoint(sizeRotate, layoutRectangle, format);
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// 重设布局方式都为Center
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StringFormat newFormat = new StringFormat(format);
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newFormat.Alignment = StringAlignment.Center;
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newFormat.LineAlignment = StringAlignment.Center;
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// 绘制旋转后文本
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DrawString(s, font, brush, rotatePt, newFormat, angle);
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}
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/// <summary>
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/// <para>说明：绘制文本旋转</para>
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/// <para>创建人：龚宇超</para>
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/// <para>创建日期：2017-07-24 </para>
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/// <para>修改人：</para>
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/// <para>修改日期：</para>
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/// <para>修改备注：</para>
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/// <para>版本：1.0</para>
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/// </summary>
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/// <param name="s">文本</param>
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/// <param name="font">字体</param>
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/// <param name="brush">填充</param>
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/// <param name="point">绘制坐标</param>
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/// <param name="format">布局方式</param>
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/// <param name="angle">角度</param>
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public void DrawString(string s, Font font, Brush brush, PointF point, StringFormat format, float angle)
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{
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// Save the matrix
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Matrix mtxSave = Graphics.Transform;
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Matrix mtxRotate = Graphics.Transform;
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mtxRotate.RotateAt(angle, point);
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Graphics.Transform = mtxRotate;
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Graphics.DrawString(s, font, brush, point, format);
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// Reset the matrix
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Graphics.Transform = mtxSave;
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}
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/// <summary>
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/// <para>说明：计算文本宽度</para>
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/// <para>创建人：龚宇超</para>
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/// <para>创建日期：2018-04-10 </para>
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/// <para>修改人：</para>
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/// <para>修改日期：</para>
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/// <para>修改备注：</para>
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/// <para>版本：1.0</para>
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/// </summary>
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/// <param name="graphics">The graphics.</param>
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/// <param name="text">The text.</param>
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/// <returns>System.Int32.</returns>
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public static int GetTextWidth(string text)
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{
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if (string.IsNullOrEmpty(text)) return 0;
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return CutStrBytesLen(text) * 6 + GetWords(text) + 25;
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}
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/// <summary>
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/// 计算文本宽度
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/// </summary>
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/// <para>创建人：tdx</para>
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/// <para>创建日期：2024-04-09 </para>
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/// <param name="control"></param>
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/// <param name="text"></param>
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/// <returns></returns>
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public static int GetTextWidth(System.Windows.Forms.Control control, string text)
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{
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Graphics g = control.CreateGraphics();
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SizeF sizeF = g.MeasureString(text, control.Font);
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return (int)sizeF.Width;
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}
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private static int GetWords(string source)
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{
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int len = 0;
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Regex reg = new Regex("[A-Z]");
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MatchCollection mcs = reg.Matches(source);
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foreach (Match item in mcs)
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{
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if (words.Contains(item.Value)) len += 2;
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}
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return len;
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}
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/// <summary>
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/// 截断字符串 1个汉字长度为2 (超过则截断 拼上…)
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/// </summary>
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/// <param name="strInput"></param>
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/// <param name="intlen"></param>
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/// <returns></returns>
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private static int CutStrBytesLen(string strInput)//截取字符串
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{
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strInput = strInput.Trim();
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ASCIIEncoding ascii = new ASCIIEncoding();
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int intLength = 0;
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byte[] s = ascii.GetBytes(strInput);
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for (int i = 0; i < s.Length; i++)
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{
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//中文字符转化ASCII吗后不能识别全部都变成63，才回出现这样结果，但是如何碰上日文就麻烦了，全半角假名全部都是63无法识别！所以该方法谨慎使用！
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if ((int)s[i] == 63)
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{
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intLength += 2;
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}
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else
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{
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intLength += 1;
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}
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}
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return intLength;
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}
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/// <summary>
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/// <para>说明：大小转换</para>
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/// <para>创建人：龚宇超</para>
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/// <para>创建日期：2017-07-24 </para>
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/// <para>修改人：</para>
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/// <para>修改日期：</para>
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/// <para>修改备注：</para>
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/// <para>版本：1.0</para>
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/// </summary>
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/// <param name="size">The size.</param>
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/// <param name="angle">The angle.</param>
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/// <returns>SizeF.</returns>
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private SizeF ConvertSize(SizeF size, float angle)
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{
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Matrix matrix = new Matrix();
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matrix.Rotate(angle);
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// 旋转矩形四个顶点
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PointF[] pts = new PointF[4];
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pts[0].X = -size.Width / 2f;
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pts[0].Y = -size.Height / 2f;
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pts[1].X = -size.Width / 2f;
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pts[1].Y = size.Height / 2f;
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pts[2].X = size.Width / 2f;
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pts[2].Y = size.Height / 2f;
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pts[3].X = size.Width / 2f;
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pts[3].Y = -size.Height / 2f;
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matrix.TransformPoints(pts);
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// 求取四个顶点的包围盒
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float left = float.MaxValue;
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float right = float.MinValue;
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float top = float.MaxValue;
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float bottom = float.MinValue;
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foreach (PointF pt in pts)
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{
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// 求取并集
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if (pt.X < left)
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left = pt.X;
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if (pt.X > right)
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right = pt.X;
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if (pt.Y < top)
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top = pt.Y;
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if (pt.Y > bottom)
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bottom = pt.Y;
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}
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SizeF result = new SizeF(right - left, bottom - top);
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return result;
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}
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/// <summary>
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/// <para>说明：获取控件Point</para>
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/// <para>创建人：龚宇超</para>
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/// <para>创建日期：2018-04-10 </para>
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/// <para>修改人：</para>
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/// <para>修改日期：</para>
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/// <para>修改备注：</para>
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/// <para>版本：1.0</para>
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/// </summary>
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/// <param name="size">The size.</param>
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/// <param name="layoutRectangle">The layout rectangle.</param>
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/// <param name="format">The format.</param>
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/// <returns>PointF.</returns>
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private PointF GetRotatePoint(SizeF size, RectangleF layoutRectangle, StringFormat format)
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{
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PointF pt = new PointF();
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switch (format.Alignment)
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{
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case StringAlignment.Near:
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pt.X = layoutRectangle.Left + size.Width / 2f;
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break;
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case StringAlignment.Center:
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pt.X = (layoutRectangle.Left + layoutRectangle.Right) / 2f;
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break;
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case StringAlignment.Far:
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pt.X = layoutRectangle.Right - size.Width / 2f;
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break;
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default:
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break;
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}
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switch (format.LineAlignment)
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{
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case StringAlignment.Near:
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pt.Y = layoutRectangle.Top + size.Height / 2f;
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break;
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case StringAlignment.Center:
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pt.Y = (layoutRectangle.Top + layoutRectangle.Bottom) / 2f;
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break;
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case StringAlignment.Far:
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pt.Y = layoutRectangle.Bottom - size.Height / 2f;
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break;
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default:
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break;
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}
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return pt;
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}
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}
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}
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