usercontrol1.cs

很实用的仪表组件

			this.nl.Width=(this.Width-60)/3;
			this.nl.Height=(this.Height-60)/6;
			this.nl.Location=new Point((60-this.Width)/6+this.Width/2,this.Height/2+(this.Height-60)/11+5);
			this.nl.ForeColor=namecolor;
			this.nl.Font=namefont;
			this.nl.Text=metername;
			//仪表的量纲
			this.dl.Width=(this.Width-60)/2;
			this.dl.Height=(this.Height-60)/10;
			this.dl.Location=new Point(this.Width/2,this.Height/2+(this.Height-60)/4+10);
			this.dl.ForeColor=dimentioncolor;
			this.dl.Font=dimentionfont;
			this.dl.Text=dimention;
			//仪表的值数字显示
			this.vl.Width=(this.Width-60)/2;
			this.vl.Height=(this.Height-60)/10;
			this.vl.Location=new Point(this.Width/2+(60-this.Width)/2,this.Height/2+(this.Height-60)/4+10);
			this.vl.ForeColor=valuecolor;
			this.Font=valuefont;
			this.vl.Text=currentvalue.ToString();
			//将坐标移至中心
			graphics.TranslateTransform(this.Width/2,this.Height/2);
			//画边框
			Pen bp=new Pen(bordercolor,2);
			graphics.DrawRectangle(bp,1-this.Width/2,1-this.Height/2,this.Width-1,this.Height-1);
			//画背景
            SolidBrush eb1=new SolidBrush(backcirclecolor);
			graphics.FillEllipse(eb1,30-this.Width/2,30-this.Height/2,this.Width-60,this.Height-60);
			
            //画刻度
			Pen lp1=new Pen(linecolor,2);//主刻度画笔
			Pen lp2=new Pen(linecolor,1);//副刻度画笔
		    SolidBrush yb=new SolidBrush(backcirclecolor);
			SolidBrush tb=new SolidBrush(textcolor);//刻度值的颜色
			SolidBrush atb=new SolidBrush(alarmcolor);//报警值的颜色
			int cvalue=this.minvalue;//刻度值
			int vinterval=(maxvalue-minvalue)/(mainscales-1);//每一大格量程值
			float dit=240f/((minorscales+1)*(mainscales-1));//每一小格角度值
			float td=150;//初始角度
			graphics.RotateTransform(90);
			RectangleF textrect=new RectangleF(-5,(60-this.Width)/2-20,35,20);
			graphics.RotateTransform(-90);
            graphics.RotateTransform(td);
			for(int i=0;i<mainscales-1;i++)
			{
				
				graphics.DrawLine(lp1,0,0,(this.Width-60)/2,0);
				
				graphics.RotateTransform(90);
                if(isalarm&&cvalue==alarmvalue)
					graphics.DrawString(cvalue.ToString(),textfont,atb,textrect);
				else
				    graphics.DrawString(cvalue.ToString(),textfont,tb,textrect);
				cvalue=cvalue+vinterval;

				  graphics.RotateTransform(-90);
				for(int j=0;j<minorscales+1;j++)
				{
                    graphics.DrawLine(lp2,0,0,(this.Width-60)/2,0);
					
                    graphics.RotateTransform(dit);
					td=td+dit;
				}
                
			}
			graphics.DrawLine(lp1,0,0,(this.Width-60)/2,0);
			graphics.RotateTransform(90);
			if(isalarm&&cvalue==alarmvalue)
				graphics.DrawString(cvalue.ToString(),textfont,atb,textrect);
			else
			    graphics.DrawString(cvalue.ToString(),textfont,tb,textrect);
			graphics.RotateTransform(-90);
			graphics.RotateTransform(-390);
            graphics.FillEllipse(yb,37-this.Width/2,37-this.Height/2,this.Width-74,this.Height-74);
            //画边框
			Pen cbp=new Pen(circlebordercolor,3);
			graphics.DrawEllipse(cbp,29-this.Width/2,29-this.Height/2,this.Width-58,this.Height-58);
			//剪切表盘的下半部
			SolidBrush eb2=new SolidBrush(this.BackColor);
		    graphics.FillRectangle(eb2,1.732f*(60-this.Width)/4,(this.Width-60)/4+5,1.732f*(this.Width-60)/2,(this.Width-60)/4+5);
			//初始化指针的位置
			SolidBrush pb=new SolidBrush(pointcolor);
			SolidBrush rb=new SolidBrush(rotatepointcolor);
			PointF[] points={point1,point2,point3,point4};
		    cdegree=((this.CurrentValue-this.MinValue)/(this.MaxValue-this.MinValue))*240+150;
//			cdegree=270;
			graphics.RotateTransform(cdegree);
			graphics.FillPolygon(pb,points);
			graphics.FillEllipse(rb,-4,-4,8,8);

		}

		private void UserControl1_Resize(object sender, EventArgs e)
		{
			this.Width=this.Height;
			this.Invalidate();
		}

		[Description("报警值"),Category("参数设置")]
		public int AlarmValue
		{
			get
			{
				return alarmvalue;
			}
			set
			{
				alarmvalue=value;
				this.Invalidate();
			}
		}

		[Description("指针的当前值"),Category("参数设置")]
		public float CurrentValue
		{
			get
			{
				return currentvalue;
			}
			set
			{
				currentvalue=value;
				DrawPoint(cdegree);
				this.vl.Text=currentvalue.ToString();
				if(currentvalue>alarmvalue&&isalarm&&!isdefaultalarm)
					OnAlarmEvent(EventArgs.Empty);
			}
		}
		private void DrawPoint(float degree)
		{
			try
			{
			    PointF[] points={point1,point2,point3,point4};
				float ddegree;
				Graphics graphics=this.CreateGraphics();
				SolidBrush ycb=new SolidBrush(backcirclecolor);
				SolidBrush yrc=new SolidBrush(rotatepointcolor);
				graphics.TranslateTransform(this.Width/2,this.Height/2);
				graphics.RotateTransform(degree);
				graphics.FillPolygon(ycb,points);
				graphics.FillEllipse(yrc,-4,-4,8,8);
				SolidBrush pb=new SolidBrush(pointcolor);
				cdegree=((currentvalue-minvalue)/(maxvalue-minvalue))*240+150;
//				cdegree=(currentvalue/(maxvalue-minvalue))*240+270;
				ddegree=cdegree-degree;
				graphics.RotateTransform(ddegree);
				graphics.FillPolygon(pb,points);
				graphics.FillEllipse(yrc,-4,-4,8,8);
			}
			catch
			{
			}
		}

		public Font TextFont
		{
			get
			{
				return textfont;
			}
			set
			{
				textfont=value;
				this.Invalidate();
			}
		}

		[Description("值的颜色"),Category("外观")]
		public Color ValueColor
		{
			get
			{
				return valuecolor;
			}
			set
			{
				valuecolor=value;
				this.Invalidate();
			}
		}
		[Description("名称的颜色"),Category("外观")]
		public Color NameColor
		{
			get
			{
				return namecolor;
			}
			set
			{
				namecolor=value;
				this.Invalidate();
			}
		}
		[Description("量纲的颜色"),Category("外观")]
		public Color DimentionColor
		{
			get
			{
				return dimentioncolor;
			}
			set
			{
				dimentioncolor=value;
				this.Invalidate();
			}
		}
		[Description("值的字体"),Category("外观")]
		public Font ValueFont
		{
			get
			{
				return valuefont;
			}
			set
			{
				valuefont=value;
				this.Invalidate();
			}
		}
		[Description("名称的字体"),Category("外观")]
		public Font NameFont
		{
			get
			{
				return namefont;
			}
			set
			{
				namefont=value;
				this.Invalidate();
			}
		}
		[Description("量纲的字体"),Category("外观")]
		public Font DimentionFont
		{
			get
			{
				return dimentionfont;
			}
			set
			{
				dimentionfont=value;
				this.Invalidate();
			}
		}
		[Description("仪表的名称"),Category("外观")]
		public string MeterName
		{
			get
			{
				return metername;
			}
			set
			{
				metername=value;
				this.Invalidate();
			}
		}
		[Description("仪表的量纲"),Category("外观")]
		public string Dimention
		{
			get
			{
				return dimention;
			}
			set
			{
				dimention=value;
				this.Invalidate();
			}
		}
		[Description("内边的颜色"),Category("外观")]
		public Color CicleBorderColor
		{
			get
			{
				return circlebordercolor;
			}
			set
			{
				circlebordercolor=value;
				this.Invalidate();
			}
		}
		[Description("边框的颜色"),Category("外观")]
		public Color BorderColor
		{
			get
			{
				return bordercolor;
			}
			set
			{
				bordercolor=value;
				this.Invalidate();
			}
		}
		[DllImport("kernel32.dll")]
		public static extern bool Beep(int frequency, int duration); 
		public void Alarm()
		{	
			
			for(int i=0;i<1;)
			{
				if(currentvalue>=alarmvalue)
					Beep(2000,500);
				Thread.Sleep(500);
			}
			
		}

		private void BaoJing()//默认报警函数
		{
			if(isalarm)
			{
				if(isdefaultalarm)
				{
					if(alarmthread.IsAlive==false)
						alarmthread.Start();
					else
						alarmthread.Resume();
				}
			}
			else
			{
				if(alarmthread.IsAlive)
					alarmthread.Suspend();
			}
		}
	}
}