using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Drawing;
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using System.Drawing.Drawing2D;
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using System.Linq;
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using System.Runtime.InteropServices;
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using System.Text;
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using System.Windows.Forms;
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using DPumpHydr.WinFrmUI.WenSkin.Controls;
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namespace DPumpHydr.WinFrmUI.WenSkin.Test
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{
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public class WenPie : WenControl
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{
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public WenPie() : base()
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{
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}
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#region 私有属性
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private int value = 5;
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private int cutCount = 60;
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#endregion
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#region 公有属性
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[Category("Wen"), Description("显示图标"), DefaultValue(null)]
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public Image Image { get; set; }
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[Category("Wen"), Description("进度值"), DefaultValue(0)]
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public int Value { get => value; set { this.value = value; this.Invalidate(); this.Refresh(); } }
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[Category("Wen"), Description("获取或设置最大值（切割份数）"), DefaultValue(60)]
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public int CutCount { get => cutCount; set => cutCount = value; }
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#endregion
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protected override void OnPaint(PaintEventArgs e)
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{
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base.OnPaint(e);
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Graphics g = e.Graphics.SetGDIHigh();
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if (Image == null)
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return;
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if (Value > CutCount)
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return;
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//计算中点
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float w = Width / 2;
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float h = Height / 2;
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g.DrawImage(Image, new Rectangle(0, 0, Width, Height));
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Bitmap bitmap = WhiteAndBlack(new Bitmap(Image));
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Image image = ResizeImage(bitmap, Width, Height);
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Brush brush = new TextureBrush(image);
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//计算坐标点
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//先确定角度
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double angle = 360.00 / CutCount * Value;
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if (angle >= 360)
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return;
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PointF pointF = new PointF();
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List<PointF> pointFs = new List<PointF>();
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if (angle < 45)
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{
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double tanValue = Math.PI * angle / 180;
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pointF.X = Math.Abs((float)(Math.Atan(tanValue) * h));
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pointF.Y = h;
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//设置路径并绘制
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pointFs.Add(new PointF(0, h));
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pointFs.Add(new PointF(0, 0));
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pointFs.Add(pointF);
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pointFs.Add(new PointF(w, h));
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pointFs.Add(new PointF(w, -h));
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pointFs.Add(new PointF(-w, -h));
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pointFs.Add(new PointF(-w, h));
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}
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else if (angle < 90)
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{
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double tanValue = Math.PI * (90 - angle) / 180;
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pointF.Y = Math.Abs((float)Math.Tan(tanValue) * w);
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pointF.X = w;
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pointFs.Add(new PointF(0, h));
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pointFs.Add(new PointF(0, 0));
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pointFs.Add(pointF);
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pointFs.Add(new PointF(w, -h));
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pointFs.Add(new PointF(-w, -h));
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pointFs.Add(new PointF(-w, h));
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}
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else if (angle < 135)
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{
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double tanValue = Math.PI * (angle - 90) / 180;
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pointF.Y = -Math.Abs((float)Math.Tan(tanValue) * w);
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pointF.X = w;
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pointFs.Add(new PointF(0, h));
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pointFs.Add(new PointF(0, 0));
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pointFs.Add(pointF);
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pointFs.Add(new PointF(w, -h));
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pointFs.Add(new PointF(-w, -h));
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pointFs.Add(new PointF(-w, h));
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}
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else if (angle < 180)
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{
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double tanValue = Math.PI * (180 - angle) / 180;
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pointF.X = Math.Abs((float)Math.Tan(tanValue) * h);
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pointF.Y = -h;
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pointFs.Add(new PointF(0, h));
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pointFs.Add(new PointF(0, 0));
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pointFs.Add(pointF);
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pointFs.Add(new PointF(-w, -h));
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pointFs.Add(new PointF(-w, h));
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}
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else if (angle < 225)
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{
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double tanValue = Math.PI * (angle - 180) / 180;
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pointF.X = -Math.Abs((float)Math.Tan(tanValue) * h);
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pointF.Y = -h;
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pointFs.Add(new PointF(0, h));
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pointFs.Add(new PointF(0, 0));
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pointFs.Add(pointF);
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pointFs.Add(new PointF(-w, -h));
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pointFs.Add(new PointF(-w, h));
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}
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else if (angle < 270)
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{
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double tanValue = Math.PI * (270 - angle) / 180;
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pointF.Y = -Math.Abs((float)Math.Tan(tanValue) * w);
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pointF.X = -w;
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pointFs.Add(new PointF(0, h));
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pointFs.Add(new PointF(0, 0));
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pointFs.Add(pointF);
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pointFs.Add(new PointF(-w, h));
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}
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else if (angle < 315)
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{
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double tanValue = Math.PI * (angle - 270) / 180;
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pointF.Y = Math.Abs((float)Math.Tan(tanValue) * w);
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pointF.X = -w;
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pointFs.Add(new PointF(0, h));
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pointFs.Add(new PointF(0, 0));
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pointFs.Add(pointF);
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pointFs.Add(new PointF(-w, h));
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}
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else if (angle < 360)
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{
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double tanValue = Math.PI * (360 - angle) / 180;
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pointF.X = -Math.Abs((float)Math.Tan(tanValue) * h);
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pointF.Y = h;
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pointFs.Add(new PointF(0, h));
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pointFs.Add(new PointF(0, 0));
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pointFs.Add(pointF);
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}
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g.FillPolygon(brush, PointConvert(pointFs.ToArray(), this.Width, this.Height));
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}
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/// <summary>
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/// Resize图片
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/// </summary>
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/// <param name="bmp">原始Bitmap </param>
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/// <param name="newW">新的宽度</param>
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/// <param name="newH">新的高度</param>
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/// <returns>处理以后的图片</returns>
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public static Bitmap ResizeImage(Image bmp, int newW, int newH)
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{
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try
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{
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Bitmap b = new Bitmap(newW, newH);
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Graphics g = Graphics.FromImage(b);
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// 插值算法的质量
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g.InterpolationMode = InterpolationMode.HighQualityBicubic;
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g.DrawImage(bmp, new Rectangle(0, 0, newW, newH), new Rectangle(0, 0, bmp.Width, bmp.Height), GraphicsUnit.Pixel);
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g.Dispose();
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return b;
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}
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catch
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{
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return null;
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}
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}
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//数学点转为真实点
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public PointF[] PointConvert(PointF[] pointFs, int width, int height)
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{
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List<PointF> pointFsout = new List<PointF>();
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foreach (var item in pointFs)
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{
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pointFsout.Add(new PointF(item.X + width / 2, height / 2 - item.Y));
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}
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return pointFsout.ToArray();
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}
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public Bitmap WhiteAndBlack(System.Drawing.Bitmap image)
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{
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//原来图片的长度
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int width = image.Width;
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//原来图片的高度
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int height = image.Height;
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//改变色素
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//横坐标
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for (int x = 0; x < width; x++)
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{
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//纵坐标
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for (int y = 0; y < height; y++)
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{
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//获得坐标(x,y)颜色
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Color color = image.GetPixel(x, y);
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//获得该颜色下的黑白色
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int value = (color.R + color.G + color.B) / 3;
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//设置颜色
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image.SetPixel(x, y, Color.FromArgb(value, value, value));
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}
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}
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return image;
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}
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//改变大小
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public void SaveImage(string path, int width, int height)
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{
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Bitmap bitmap = new Bitmap(this.Width, this.Height);
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this.DrawToBitmap(bitmap, new Rectangle(0, 0, this.Width, this.Height));
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bitmap = ResizeImage(bitmap, width, height);
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bitmap.Save(path);
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}
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//原始大小
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public void SaveImage(string path)
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{
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Bitmap bitmap = new Bitmap(this.Width, this.Height);
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this.DrawToBitmap(bitmap, new Rectangle(0, 0, this.Width, this.Height));
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bitmap.Save(path);
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}
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}
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}
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