269 lines
11 KiB
C#
269 lines
11 KiB
C#
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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.Runtime.InteropServices;
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using System.Drawing.Imaging;
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namespace SEDrawing
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{
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public class GraphPlotting
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{
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/// <summary>
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/// 最大圆角半径
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/// </summary>
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protected const int roundMaxRoundRadius = 3;
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/// <summary>
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/// 最小矩形边长，用于自动处理圆角大小
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/// </summary>
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protected const int roundMinBorderLength = 20;
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/// <summary>
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/// 绘制一个圆角矩形.
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/// </summary>
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/// <param name="currentGraphicObject">当前屏幕的图形对象</param>
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/// <param name="lineColor">矩形线条的颜色</param>
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/// <param name="nLeft">矩形左上角X坐标</param>
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/// <param name="nTop">矩形左上角Y坐标</param>
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/// <param name="nRight">矩形右下角X坐标</param>
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/// <param name="nBottom">矩形右下角Y坐标</param>
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/// <param name="round">圆角的半径长度</param>
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public static void DrawRoundRect(System.Drawing.Graphics currentGraphicObject, Pen drawPen, int nLeft, int nTop, int nRight, int nBottom, int round)
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{
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if (round > roundMaxRoundRadius)
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{
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round = roundMaxRoundRadius;
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}
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else if (round < 0)
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{
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round = 0;
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}
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if (Math.Abs(nRight - nLeft) < roundMinBorderLength && Math.Abs(nBottom - nTop) < roundMinBorderLength)
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{
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round = 1;
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}
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Point Polygon1 = new Point(nLeft + round, nTop);
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Point Polygon2 = new Point(nRight - round + 1, nTop);
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Point Polygon3 = new Point(nLeft, nTop + round);
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Point Polygon4 = new Point(nRight + 1, nTop + round);
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Point Polygon5 = new Point(nLeft, nBottom - round);
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Point Polygon6 = new Point(nRight + 1, nBottom - round);
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Point Polygon7 = new Point(nLeft + round, nBottom + 1);
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Point Polygon8 = new Point(nRight - round, nBottom + 1);
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//四条主线(上下左右)
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currentGraphicObject.DrawLine(drawPen, Polygon1.X, Polygon1.Y, Polygon2.X, Polygon2.Y);
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currentGraphicObject.DrawLine(drawPen, Polygon7.X, Polygon7.Y, Polygon8.X, Polygon8.Y);
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currentGraphicObject.DrawLine(drawPen, Polygon3.X, Polygon3.Y, Polygon5.X, Polygon5.Y);
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currentGraphicObject.DrawLine(drawPen, Polygon4.X, Polygon4.Y, Polygon6.X, Polygon6.Y);
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//四个边角
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currentGraphicObject.DrawLine(drawPen, Polygon1.X, Polygon1.Y, Polygon3.X, Polygon3.Y);
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currentGraphicObject.DrawLine(drawPen, Polygon2.X, Polygon2.Y, Polygon4.X, Polygon4.Y);
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currentGraphicObject.DrawLine(drawPen, Polygon5.X, Polygon5.Y, Polygon7.X, Polygon7.Y);
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currentGraphicObject.DrawLine(drawPen, Polygon6.X, Polygon6.Y, Polygon8.X, Polygon8.Y);
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}
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/// <summary>
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/// 绘制一个圆角矩形.
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/// </summary>
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/// <param name="currentGraphicObject">当前屏幕的图形对象</param>
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/// <param name="lineColor">矩形线条的颜色</param>
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/// <param name="rect">要绘制的矩形对象</param>
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/// <param name="round">圆角的半径长度</param>
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public static void DrawRoundRect(System.Drawing.Graphics currentGraphicObject, Pen drawPen, Rectangle rect, int round)
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{
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DrawRoundRect(currentGraphicObject, drawPen, rect.Left, rect.Top, rect.Right, rect.Bottom, round);
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}
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/// <summary>
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/// 绘制一个圆角矩形.
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/// </summary>
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/// <param name="currentGraphicObject">当前屏幕的图形对象</param>
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/// <param name="lineColor">矩形线条的颜色</param>
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/// <param name="rect">要绘制的矩形对象</param>
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public static void DrawRoundRect(System.Drawing.Graphics currentGraphicObject, Pen drawPen, Rectangle rect)
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{
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DrawRoundRect(currentGraphicObject, drawPen, rect.Left, rect.Top, rect.Right, rect.Bottom, 2);
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}
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/// <summary>
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/// 填充一个圆角矩形.
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/// </summary>
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/// <param name="currentGraphicObject">当前屏幕的图形对象</param>
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/// <param name="lineColor">矩形线条的颜色</param>
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/// <param name="nLeft">矩形左上角X坐标</param>
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/// <param name="nTop">矩形左上角Y坐标</param>
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/// <param name="nRight">矩形右下角X坐标</param>
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/// <param name="nBottom">矩形右下角Y坐标</param>
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/// <param name="round">圆角的半径长度</param>
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public static void FillRoundRect(System.Drawing.Graphics currentGraphicObject, Brush brush, int nLeft, int nTop, int nRight, int nBottom, int round)
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{
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if (round > roundMaxRoundRadius)
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{
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round = roundMaxRoundRadius;
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}
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else if (round < 0)
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{
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round = 0;
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}
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if (Math.Abs(nRight - nLeft) < roundMinBorderLength && Math.Abs(nBottom - nTop) < roundMinBorderLength)
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{
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round = 1;
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}
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Point Polygon1 = new Point(nLeft + round, nTop);
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Point Polygon2 = new Point(nRight - round + 1, nTop);
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Point Polygon3 = new Point(nLeft, nTop + round);
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Point Polygon4 = new Point(nRight + 1, nTop + round);
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Point Polygon5 = new Point(nLeft, nBottom - round);
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Point Polygon6 = new Point(nRight + 1, nBottom - round);
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Point Polygon7 = new Point(nLeft + round, nBottom + 1);
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Point Polygon8 = new Point(nRight - round, nBottom + 1);
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currentGraphicObject.FillPolygon(brush, new Point[]{ Polygon1,
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Polygon3,
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Polygon5,
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Polygon7,
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Polygon8,
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Polygon6,
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Polygon4,
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Polygon2});
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}
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/// <summary>
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/// 填充一个圆角矩形.
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/// </summary>
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/// <param name="currentGraphicObject">当前屏幕的图形对象</param>
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/// <param name="lineColor">矩形线条的颜色</param>
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/// <param name="rect">要填充的矩形</param>
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/// <param name="indentSize">填充区域针对矩形的缩进距离</param>
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/// <param name="round">圆角的半径长度</param>
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public static void FillRoundRect(System.Drawing.Graphics currentGraphicObject, Brush brush, Rectangle rect, int indentSize, int round)
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{
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FillRoundRect(currentGraphicObject, brush, rect.Left + indentSize, rect.Top + indentSize, rect.Right - indentSize + 1, rect.Bottom - indentSize + 1, round);
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}
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/// <summary>
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/// 填充一个圆角矩形.
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/// </summary>
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/// <param name="currentGraphicObject">当前屏幕的图形对象</param>
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/// <param name="lineColor">矩形线条的颜色</param>
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/// <param name="rect">要填充的矩形</param>
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public static void FillRoundRect(System.Drawing.Graphics currentGraphicObject, Brush brush, Rectangle rect)
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{
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FillRoundRect(currentGraphicObject, brush, rect, 0, 2);
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}
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/// <summary>
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/// 使图片单色化
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/// </summary>
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/// <param name="pimage"></param>
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/// <returns></returns>
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public static Bitmap MonochromeLockBits(Bitmap pimage)
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{
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Bitmap source = null;
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// If original bitmap is not already in 32 BPP, ARGB format, then convert
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if (pimage.PixelFormat != PixelFormat.Format32bppArgb)
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{
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source = new Bitmap(pimage.Width, pimage.Height, PixelFormat.Format32bppArgb);
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source.SetResolution(pimage.HorizontalResolution, pimage.VerticalResolution);
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using (Graphics g = Graphics.FromImage(source))
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{
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g.DrawImageUnscaled(pimage, 0, 0);
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}
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}
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else
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{
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source = pimage;
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}
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// Lock source bitmap in memory
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BitmapData sourceData = source.LockBits(new Rectangle(0, 0, source.Width, source.Height), ImageLockMode.ReadOnly, PixelFormat.Format32bppArgb);
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// Copy image data to binary array
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int imageSize = sourceData.Stride * sourceData.Height;
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byte[] sourceBuffer = new byte[imageSize];
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Marshal.Copy(sourceData.Scan0, sourceBuffer, 0, imageSize);
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// Unlock source bitmap
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source.UnlockBits(sourceData);
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// Create destination bitmap
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Bitmap destination = new Bitmap(source.Width, source.Height, PixelFormat.Format1bppIndexed);
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// Lock destination bitmap in memory
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BitmapData destinationData = destination.LockBits(new Rectangle(0, 0, destination.Width, destination.Height), ImageLockMode.WriteOnly, PixelFormat.Format1bppIndexed);
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// Create destination buffer
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imageSize = destinationData.Stride * destinationData.Height;
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byte[] destinationBuffer = new byte[imageSize];
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int sourceIndex = 0;
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int destinationIndex = 0;
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int pixelTotal = 0;
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byte destinationValue = 0;
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int pixelValue = 128;
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int height = source.Height;
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int width = source.Width;
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int threshold = 500;
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// Iterate lines
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for (int y = 0; y < height; y++)
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{
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sourceIndex = y * sourceData.Stride;
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destinationIndex = y * destinationData.Stride;
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destinationValue = 0;
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pixelValue = 128;
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// Iterate pixels
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for (int x = 0; x < width; x++)
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{
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// Compute pixel brightness (i.e. total of Red, Green, and Blue values)
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pixelTotal = sourceBuffer[sourceIndex + 1] + sourceBuffer[sourceIndex + 2] + sourceBuffer[sourceIndex + 3];
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if (pixelTotal > threshold)
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{
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destinationValue += (byte)pixelValue;
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}
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if (pixelValue == 1)
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{
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destinationBuffer[destinationIndex] = destinationValue;
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destinationIndex++;
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destinationValue = 0;
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pixelValue = 128;
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}
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else
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{
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pixelValue >>= 1;
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}
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sourceIndex += 4;
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}
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if (pixelValue != 128)
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{
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destinationBuffer[destinationIndex] = destinationValue;
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}
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}
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// Copy binary image data to destination bitmap
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Marshal.Copy(destinationBuffer, 0, destinationData.Scan0, imageSize);
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// Unlock destination bitmap
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destination.UnlockBits(destinationData);
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// Dispose of source if not originally supplied bitmap
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if (source != pimage)
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{
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source.Dispose();
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}
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// Return
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return destination;
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}
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}
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}
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