* 增加一些绘图的公共函数
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Sunny
parent
7ed46b29d6
commit
e05281a54f
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@ -273,9 +273,9 @@ namespace Sunny.UI
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}
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SizeF sfName = g.MeasureString(Option.YAxis.Name, SubFont);
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float xx = DrawOrigin.X - Option.YAxis.AxisTick.Length - widthMax - sfName.Width;
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float yy = Option.Grid.Top + (DrawSize.Height - sfName.Height) / 2.0f;
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g.DrawStringRotateAtCenter(Option.YAxis.Name, SubFont, ChartStyle.ForeColor, new PointF(xx + sfName.Width / 2.0f, yy + sfName.Height / 2.0f), 270);
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float xx = DrawOrigin.X - Option.YAxis.AxisTick.Length - widthMax - sfName.Height / 2.0f;
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float yy = Option.Grid.Top + DrawSize.Height / 2.0f;
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g.DrawStringRotateAtCenter(Option.YAxis.Name, SubFont, ChartStyle.ForeColor, new PointF(xx, yy), 270);
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}
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}
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@ -20,6 +20,7 @@
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******************************************************************************/
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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.Windows.Forms;
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@ -144,7 +145,7 @@ namespace Sunny.UI
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return Color.FromArgb(alpha, color);
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}
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private static Graphics graphics;
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private static Graphics TempGraphics;
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/// <summary>
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/// 提供一个Graphics，常用于需要计算文字大小时
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@ -152,13 +153,13 @@ namespace Sunny.UI
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/// <returns>大小</returns>
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public static Graphics Graphics()
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{
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if (graphics == null)
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if (TempGraphics == null)
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{
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Bitmap bmp = new Bitmap(1, 1);
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graphics = bmp.Graphics();
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TempGraphics = bmp.Graphics();
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}
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return graphics;
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return TempGraphics;
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}
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/// <summary>
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@ -912,20 +913,91 @@ namespace Sunny.UI
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}
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public static void DrawString(this Graphics g, string s, Font font, Color color,
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RectangleF layoutRectangle, StringFormat format, float angle)
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RectangleF rect, StringFormat format, float angle)
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{
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using (Brush br = new SolidBrush(color))
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{
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g.DrawString(s, font, br, layoutRectangle, format, angle);
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g.DrawStringRotateAtCenter(s, font, color, rect.Center(), (int)angle);
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//g.DrawString(s, font, br, layoutRectangle, format, angle);
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}
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}
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public static void DrawString(this Graphics g, string s, Font font, Color color,
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PointF point, StringFormat format, float angle)
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/// <summary>
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/// 以文字中心点为原点，旋转文字
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/// </summary>
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/// <param name="g">Graphics</param>
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/// <param name="text">文字</param>
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/// <param name="font">字体</param>
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/// <param name="color">颜色</param>
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/// <param name="centerPoint">文字中心点</param>
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/// <param name="angle">角度</param>
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public static void DrawStringRotateAtCenter(this Graphics g, string text, Font font, Color color, PointF centerPoint, float angle)
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{
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using (Brush br = new SolidBrush(color))
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{
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g.DrawString(s, font, br, point, format, angle);
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g.DrawStringRotateAtCenter(text, font, br, centerPoint, angle);
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}
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}
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/// <summary>
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/// 以文字中心点为原点，旋转文字
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/// </summary>
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/// <param name="g">Graphics</param>
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/// <param name="text">文字</param>
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/// <param name="font">字体</param>
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/// <param name="brush">笔刷</param>
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/// <param name="centerPoint">文字中心点</param>
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/// <param name="angle">角度</param>
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public static void DrawStringRotateAtCenter(this Graphics g, string text, Font font, Brush brush, PointF centerPoint, float angle)
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{
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SizeF sf = g.MeasureString(text, font);
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float x1 = centerPoint.X - sf.Width / 2.0f;
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float y1 = centerPoint.Y - sf.Height / 2.0f;
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// 把画板的原点(默认是左上角)定位移到文字中心
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g.TranslateTransform(x1 + sf.Width / 2, y1 + sf.Height / 2);
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// 旋转画板
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g.RotateTransform(angle);
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// 回退画板x,y轴移动过的距离
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g.TranslateTransform(-(x1 + sf.Width / 2), -(y1 + sf.Height / 2));
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g.DrawString(text, font, brush, x1, y1);
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//恢复
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g.TranslateTransform(x1 + sf.Width / 2, y1 + sf.Height / 2);
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g.RotateTransform(-angle);
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g.TranslateTransform(-(x1 + sf.Width / 2), -(y1 + sf.Height / 2));
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}
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/// <summary>
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/// 以旋转点为原点，旋转文字
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/// </summary>
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/// <param name="g">Graphics</param>
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/// <param name="text">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="rotatePoint">旋转点</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 static void DrawString(this Graphics g, string text, Font font, Brush brush, PointF rotatePoint, StringFormat format, float angle)
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{
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// Save the matrix
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Matrix mtxSave = g.Transform;
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Matrix mtxRotate = g.Transform;
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mtxRotate.RotateAt(angle, rotatePoint);
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g.Transform = mtxRotate;
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g.DrawString(text, font, brush, rotatePoint, format);
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// Reset the matrix
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g.Transform = mtxSave;
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}
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public static void DrawString(this Graphics g, string s, Font font, Color color, PointF rotatePoint, StringFormat format, float angle)
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{
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using (Brush br = new SolidBrush(color))
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{
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g.DrawString(s, font, br, rotatePoint, format, angle);
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}
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}
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@ -933,161 +1005,244 @@ namespace Sunny.UI
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/// 绘制根据矩形旋转文本
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/// </summary>
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/// <param name="g">Graphics</param>
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/// <param name="s">文本</param>
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/// <param name="text">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="rect">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 static void DrawString(this Graphics g, string s, Font font, Brush brush, RectangleF layoutRectangle, StringFormat format, float angle)
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public static void DrawString(this Graphics g, string text, Font font, Brush brush, RectangleF rect, 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 = g.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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g.DrawString(s, font, brush, rotatePt, newFormat, angle);
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g.DrawStringRotateAtCenter(text, font, brush, rect.Center(), angle);
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}
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/// <summary>
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/// 以文字中心点为原点，旋转文字
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/// 两个矩阵是否重叠（边沿重叠，也认为是重叠）
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/// </summary>
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/// <param name="graphics">Graphics</param>
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/// <param name="text">文字</param>
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/// <param name="font">字体</param>
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/// <param name="color">颜色</param>
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/// <param name="centerPoint">文字中心点</param>
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/// <param name="angle">角度</param>
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public static void DrawStringRotateAtCenter(this Graphics graphics, string text, Font font, Color color, PointF centerPoint, int angle)
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/// <param name="rc1">第一个矩阵的位置</param>
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/// <param name="rc2">第二个矩阵的位置</param>
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/// <returns></returns>
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public static bool IsOverlap(this Rectangle rc1, Rectangle rc2)
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{
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SizeF sf = graphics.MeasureString(text, font);
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float x1 = centerPoint.X - sf.Width / 2.0f;
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float y1 = centerPoint.Y - sf.Height / 2.0f;
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// 把画板的原点(默认是左上角)定位移到文字中心
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graphics.TranslateTransform(x1 + sf.Width / 2, y1 + sf.Height / 2);
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// 旋转画板
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graphics.RotateTransform(angle);
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// 回退画板x,y轴移动过的距离
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graphics.TranslateTransform(-(x1 + sf.Width / 2), -(y1 + sf.Height / 2));
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graphics.DrawString(text, font, new SolidBrush(Color.Black), x1, y1);
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//恢复
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graphics.TranslateTransform(x1 + sf.Width / 2, y1 + sf.Height / 2);
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graphics.RotateTransform(-angle);
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graphics.TranslateTransform(-(x1 + sf.Width / 2), -(y1 + sf.Height / 2));
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return rc1.X + rc1.Width > rc2.X &&
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rc2.X + rc2.Width > rc1.X &&
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rc1.Y + rc1.Height > rc2.Y &&
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rc2.Y + rc2.Height > rc1.Y;
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}
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/// <summary>
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/// 绘制根据点旋转文本，一般旋转点给定位文本包围盒中心点
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/// 两个矩阵是否重叠（边沿重叠，也认为是重叠）
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/// </summary>
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/// <param name="g">Graphics</param>
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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">旋转点</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 static void DrawString(this Graphics g, string s, Font font, Brush brush, PointF point, StringFormat format, float angle)
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/// <param name="rc1">第一个矩阵的位置</param>
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/// <param name="rc2">第二个矩阵的位置</param>
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/// <returns></returns>
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public static bool IsOverlap(this RectangleF rc1, RectangleF rc2)
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{
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// Save the matrix
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Matrix mtxSave = g.Transform;
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Matrix mtxRotate = g.Transform;
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mtxRotate.RotateAt(angle, point);
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g.Transform = mtxRotate;
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g.DrawString(s, font, brush, point, format);
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// Reset the matrix
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g.Transform = mtxSave;
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return rc1.X + rc1.Width > rc2.X &&
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rc2.X + rc2.Width > rc1.X &&
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rc1.Y + rc1.Height > rc2.Y &&
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rc2.Y + rc2.Height > rc1.Y;
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}
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private static SizeF ConvertSize(SizeF size, float angle)
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/// <summary>
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/// 两点创建一个矩形
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/// </summary>
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/// <param name="pf1">点1</param>
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/// <param name="pf2">点2</param>
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/// <returns>矩形</returns>
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public static RectangleF CreateRectangleF(this PointF pf1, PointF pf2)
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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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return new RectangleF(Math.Min(pf1.X, pf2.X), Math.Min(pf1.Y, pf2.Y),
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Math.Abs(pf1.X - pf2.X), Math.Abs(pf1.Y - pf2.Y));
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}
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private static PointF GetRotatePoint(SizeF size, RectangleF layoutRectangle, StringFormat format)
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/// <summary>
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/// 两点创建一个矩形
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/// </summary>
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/// <param name="pf1">点1</param>
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/// <param name="pf2">点2</param>
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/// <returns>矩形</returns>
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public static Rectangle CreateRectangle(this Point pf1, Point pf2)
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{
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PointF pt = new PointF();
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return new Rectangle(Math.Min(pf1.X, pf2.X), Math.Min(pf1.Y, pf2.Y),
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Math.Abs(pf1.X - pf2.X), Math.Abs(pf1.Y - pf2.Y));
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}
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switch (format.Alignment)
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public static double CalcY(PointF pf1, PointF pf2, double x)
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{
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if (pf1.Y.Equals(pf2.Y)) return pf1.Y;
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if (pf1.X.Equals(pf2.X)) return float.NaN;
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double a = (pf2.Y - pf1.Y) * 1.0 / (pf2.X - pf1.X);
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double b = pf1.Y - a * pf1.X;
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return a * x + b;
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}
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public static double CalcX(PointF pf1, PointF pf2, double y)
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{
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if (pf1.X.Equals(pf2.X)) return pf1.X;
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if (pf1.Y.Equals(pf2.Y)) return float.NaN;
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double a = (pf2.Y - pf1.Y) * 1.0 / (pf2.X - pf1.X);
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double b = pf1.Y - a * pf1.X;
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return (y - b) * 1.0 / a;
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}
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public static double CalcY(Point pf1, Point pf2, double x)
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{
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if (pf1.Y == pf2.Y) return pf1.Y;
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if (pf1.X == pf2.X) return double.NaN;
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double a = (pf2.Y - pf1.Y) * 1.0 / (pf2.X - pf1.X);
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double b = pf1.Y - a * pf1.X;
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return a * x + b;
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}
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public static double CalcX(Point pf1, Point pf2, double y)
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{
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if (pf1.Y == pf2.Y) return pf1.X;
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if (pf1.X == pf2.X) return double.NaN;
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double a = (pf2.Y - pf1.Y) * 1.0 / (pf2.X - pf1.X);
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double b = pf1.Y - a * pf1.X;
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return (y - b) * 1.0 / a;
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}
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public static void DrawTwoPoints(this Graphics g, Color color, float width, PointF pf1, PointF pf2, Rectangle rect)
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{
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using (Pen pen = new Pen(color, width))
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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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DrawTwoPoints(g, pen, pf1, pf2, rect);
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}
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}
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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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public static void DrawTwoPoints(this Graphics g, Pen pen, PointF pf1, PointF pf2, Rectangle rect)
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{
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bool haveLargePixel = Math.Abs(pf1.X - pf2.X) >= rect.Width * 100 || Math.Abs(pf1.Y - pf2.Y) >= rect.Height * 100;
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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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//两点都在区域内
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if (pf1.InRect(rect) && pf2.InRect(rect))
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{
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g.DrawLine(pen, pf1, pf2);
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return;
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}
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switch (format.LineAlignment)
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//无大坐标像素
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if (!haveLargePixel)
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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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g.DrawLine(pen, pf1, pf2);
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return;
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}
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return pt;
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//垂直线
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if (pf1.X.Equals(pf2.X))
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{
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if (pf1.X <= rect.Left) return;
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if (pf1.X >= rect.Right) return;
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if (pf1.Y <= rect.Top && pf2.Y <= rect.Top) return;
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if (pf1.Y >= rect.Bottom && pf2.Y >= rect.Bottom) return;
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float yy1 = Math.Min(pf1.Y, pf2.Y);
|
||||
float yy2 = Math.Max(pf1.Y, pf2.Y);
|
||||
if (yy1 <= rect.Top)
|
||||
{
|
||||
if (yy2 <= rect.Bottom) g.DrawLine(pen, pf1.X, rect.Top, pf1.X, yy2);
|
||||
else g.DrawLine(pen, pf1.X, rect.Top, pf1.X, rect.Bottom);
|
||||
}
|
||||
else
|
||||
{
|
||||
if (yy2 <= rect.Bottom) g.DrawLine(pen, pf1.X, yy1, pf1.X, yy2);
|
||||
else g.DrawLine(pen, pf1.X, yy1, pf1.X, rect.Bottom);
|
||||
}
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
//水平线
|
||||
if (pf1.Y.Equals(pf2.Y))
|
||||
{
|
||||
if (pf1.Y <= rect.Top) return;
|
||||
if (pf1.Y >= rect.Bottom) return;
|
||||
if (pf1.X <= rect.Left && pf2.X <= rect.Left) return;
|
||||
if (pf1.X >= rect.Right && pf2.X >= rect.Right) return;
|
||||
|
||||
float xx1 = Math.Min(pf1.X, pf2.X);
|
||||
float xx2 = Math.Max(pf1.X, pf2.X);
|
||||
if (xx1 <= rect.Left)
|
||||
{
|
||||
if (xx2 <= rect.Right) g.DrawLine(pen, rect.Left, pf1.Y, xx2, pf1.Y);
|
||||
else g.DrawLine(pen, rect.Left, pf1.Y, rect.Right, pf1.Y);
|
||||
}
|
||||
else
|
||||
{
|
||||
if (xx2 <= rect.Right) g.DrawLine(pen, xx1, pf1.Y, xx2, pf1.Y);
|
||||
else g.DrawLine(pen, xx1, pf1.Y, rect.Right, pf1.Y);
|
||||
}
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
//判断两个区域是否相交
|
||||
RectangleF rect1 = pf1.CreateRectangleF(pf2);
|
||||
if (!rect1.IsOverlap(rect)) return;
|
||||
|
||||
double x1 = CalcX(pf1, pf2, rect.Top);
|
||||
double x2 = CalcX(pf1, pf2, rect.Bottom);
|
||||
double y1 = CalcY(pf1, pf2, rect.Left);
|
||||
double y2 = CalcY(pf1, pf2, rect.Right);
|
||||
|
||||
//判断线段是否和区域有交点
|
||||
bool isExist = x1.InRange(rect.Left, rect.Right) || x2.InRange(rect.Left, rect.Right) || y1.InRange(rect.Top, rect.Bottom) || y2.InRange(rect.Top, rect.Bottom);
|
||||
if (!isExist) return;
|
||||
|
||||
List<PointF> TwoPoints = new List<PointF>();
|
||||
if (!pf1.InRect(rect) && !pf2.InRect(rect))
|
||||
{
|
||||
if (x1.InRange(rect.Left, rect.Right)) TwoPoints.Add(new PointF((float)x1, rect.Top));
|
||||
if (x2.InRange(rect.Left, rect.Right)) TwoPoints.Add(new PointF((float)x2, rect.Bottom));
|
||||
if (y1.InRange(rect.Top, rect.Bottom)) TwoPoints.Add(new PointF(rect.Left, (float)y1));
|
||||
if (y2.InRange(rect.Top, rect.Bottom)) TwoPoints.Add(new PointF(rect.Right, (float)y2));
|
||||
}
|
||||
else
|
||||
{
|
||||
PointF center = pf1.InRect(rect) ? pf1 : pf2;
|
||||
PointF border = pf2.InRect(rect) ? pf1 : pf2;
|
||||
TwoPoints.Add(center);
|
||||
if (border.X >= center.X)
|
||||
{
|
||||
if (border.Y >= center.Y)
|
||||
{
|
||||
TwoPoints.Add(x2 <= rect.Right ? new PointF((float)x2, rect.Bottom) : new PointF(rect.Right, (float)y2));
|
||||
}
|
||||
else
|
||||
{
|
||||
TwoPoints.Add(x1 <= rect.Right ? new PointF((float)x1, rect.Top) : new PointF(rect.Right, (float)y2));
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
if (border.Y >= center.Y)
|
||||
{
|
||||
TwoPoints.Add(x2 >= rect.Left ? new PointF((float)x2, rect.Bottom) : new PointF(rect.Left, (float)y1));
|
||||
}
|
||||
else
|
||||
{
|
||||
TwoPoints.Add(x1 >= rect.Left ? new PointF((float)x1, rect.Bottom) : new PointF(rect.Left, (float)y1));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (TwoPoints.Count == 2)
|
||||
{
|
||||
g.DrawLine(pen, TwoPoints[0], TwoPoints[1]);
|
||||
}
|
||||
else
|
||||
{
|
||||
Console.WriteLine(TwoPoints.Count);
|
||||
}
|
||||
|
||||
TwoPoints.Clear();
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user