winform仪表盘
1 、效果如
设置值参考
2 、代码编码
新建一个用户控件，前台页面不用做任何设置
/// <summary>
/// 仪表盘
/// </summary>
public partial class InstrumentControl : UserControl
{
public InstrumentControl()
{
InitializeComponent();
this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
this.SetStyle(ControlStyles.DoubleBuffer, true);
this.SetStyle(ControlStyles.ResizeRedraw, true);
this.SetStyle(ControlStyles.Selectable, true);
this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
this.SetStyle(ControlStyles.UserPaint, true);
this.SizeChanged += InstrumentControl_SizeChanged; ;
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
this.Size = new Size(350, 200);
}
private void InstrumentControl_SizeChanged(object sender, EventArgs e)
{
m_rectWorking = new Rectangle(10, 10, this.Width - 20, this.Height - 20);
}
private int splitCount = 10;
/// <summary>
/// 刻度数量
/// </summary>
/// <value></value>
[Description("分隔刻度数量，>1"), Category("自定义")]
public int SplitCount
{
get { return splitCount; }
set
{
if (value < 1)
return;
splitCount = value;
Refresh();
}
}
private int meterDegrees = 150;
/// <summary>
/// 跨度角度
/// </summary>
/// <value></value>
[Description("表盘跨度角度，0-360"), Category("自定义")]
public int MeterDegrees
{
get { return meterDegrees; }
set
{
if (value > 360 || value <= 0)
return;
meterDegrees = value;
Refresh();
}
}
private decimal minValue = 0;
/// <summary>
/// 最小值
/// </summary>
[Description("最小值,比最大值小"), Category("自定义")]
public decimal MinValue
{
get { return minValue; }
set
{
if (value >= maxValue)
return;
minValue = value;
Refresh();
}
}
private decimal maxValue = 100;
/// <summary>
///最大值
/// </summary>
[Description("最大值,比最小值大"), Category("自定义")]
public decimal MaxValue
{
get { return maxValue; }
set
{
if (value <= minValue)
return;
maxValue = value;
Refresh();
}
}
/// <summary>
/// 获取或设置控件显示的文字的字体。
/// </summary>
/// <PermissionSet>
/// <IPermission class="System.Security.Permissions.EnvironmentPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" />
/// <IPermission class="System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" />
/// <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode, ControlEvidence" />
/// <IPermission class="System.Diagnostics.PerformanceCounterPermission, System, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" />
/// </PermissionSet>
[Description("刻度字体"), Category("自定义")]
public override Font Font
{
get
{
return base.Font;
}
set
{
base.Font = value;
Refresh();
}
}
private decimal m_value = 0;
/// <summary>
/// 仪表值
/// </summary>
/// <value>The value.</value>
[Description("值，最大值与最小值之间的值"), Category("自定义")]
public decimal Value
{
get { return m_value; }
set
{
if (value < minValue || value > maxValue)
return;
m_value = value;
Refresh();
}
}
private MeterTextLocation textLocation = MeterTextLocation.None;
/// <summary>
/// 文字位置
/// </summary>
/// <value>The text location.</value>
[Description("值和固定文字显示位置"), Category("自定义")]
public MeterTextLocation TextLocation
{
get { return textLocation; }
set
{
textLocation = value;
Refresh();
}
}
private string fixedText;
/// <summary>
///固定文字
/// </summary>
[Description("固定文字"), Category("自定义")]
public string FixedText
{
get { return fixedText; }
set
{
fixedText = value;
Refresh();
}
}
private Font textFont = DefaultFont;
/// <summary>
/// 固定文字字体
/// </summary>
[Description("值和固定文字字体"), Category("自定义")]
public Font TextFont
{
get { return textFont; }
set
{
textFont = value;
Refresh();
}
}
private Color externalRoundColor = Color.Red;
/// <summary>
/// 外边圆的颜色
/// </summary>
[Description("外圆颜色"), Category("自定义")]
public Color ExternalRoundColor
{
get { return externalRoundColor; }
set
{
externalRoundColor = value;
Refresh();
}
}
private Color insideRoundColor = Color.FromArgb(255, 77, 59);
/// <summary>
///内圆颜色
/// </summary>
/// <value></value>
[Description("内圆颜色"), Category("自定义")]
public Color InsideRoundColor
{
get { return insideRoundColor; }
set
{
insideRoundColor = value;
Refresh();
}
}
private Color boundaryLineColor = Color.FromArgb(255, 77, 59);
/// <summary>
/// 边界线颜色
/// </summary>
[Description("边界线颜色"), Category("自定义")]
public Color BoundaryLineColor
{
get { return boundaryLineColor; }
set
{
boundaryLineColor = value;
Refresh();
}
}
private Color scaleColor = Color.FromArgb(255, 77, 59);
/// <summary>
/// 刻度颜色
/// </summary>
[Description("刻度颜色"), Category("自定义")]
public Color ScaleColor
{
get { return scaleColor; }
set
{
scaleColor = value;
Refresh();
}
}
private Color scaleValueColor = Color.FromArgb(255, 77, 59);
/// <summary>
/// 刻度值文字颜色
/// </summary>
[Description("刻度值文字颜色"), Category("自定义")]
public Color ScaleValueColor
{
get { return scaleValueColor; }
set
{
scaleValueColor = value;
Refresh();
}
}
private Color pointerColor = Color.FromArgb(255, 77, 59);
/// <summary>
/// 指针颜色
/// </summary>
[Description("指针颜色"), Category("自定义")]
public Color PointerColor
{
get { return pointerColor; }
set
{
pointerColor = value;
Refresh();
}
}
private Color textColor = Color.FromArgb(255, 77, 59);
/// <summary>
/// 值和固定文字颜色
/// </summary>
[Description("值和固定文字颜色"), Category("自定义")]
public Color TextColor
{
get { return textColor; }
set
{
textColor = value;
Refresh();
}
}
//绘制区
Rectangle m_rectWorking;
//绘制
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
var g = e.Graphics;
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
//g.DrawRectangle(new Pen(new SolidBrush(Color.Gray)), m_rectWorking);
//外圆
float fltStartAngle = -90 - (meterDegrees) / 2 + 360;//开始角度
//矩形区域
var r1 = new Rectangle(m_rectWorking.Location, new Size(m_rectWorking.Width, m_rectWorking.Width));
//画圆弧
g.DrawArc(new Pen(new SolidBrush(externalRoundColor), 3), r1, fltStartAngle, meterDegrees);
//内圆
var r2 = new Rectangle(m_rectWorking.Left + (m_rectWorking.Width - m_rectWorking.Width / 4) / 2, m_rectWorking.Top + (m_rectWorking.Width - m_rectWorking.Width / 4) / 2, m_rectWorking.Width / 4, m_rectWorking.Width / 4);
g.DrawArc(new Pen(new SolidBrush(insideRoundColor), 2), r2, fltStartAngle, meterDegrees);
//边界线
if (meterDegrees != 360)
{
float fltAngle = fltStartAngle - 180;
//左上的点坐标
float intY = (float)(m_rectWorking.Top + m_rectWorking.Width / 2 - ((m_rectWorking.Width / 2 - m_rectWorking.Width / 8) * Math.Sin(Math.PI * (fltAngle / 180.00F))));
float intX = (float)(m_rectWorking.Left + (m_rectWorking.Width / 2 - ((m_rectWorking.Width / 2 - m_rectWorking.Width / 8) * Math.Cos(Math.PI * (fltAngle / 180.00F)))));
//左下的点坐标
float fltY1 = (float)(m_rectWorking.Top + m_rectWorking.Width / 2 - (m_rectWorking.Width / 8 * Math.Sin(Math.PI * (fltAngle / 180.00F))));
float fltX1 = (float)(m_rectWorking.Left + (m_rectWorking.Width / 2 - (m_rectWorking.Width / 8 * Math.Cos(Math.PI * (fltAngle / 180.00F)))));
g.DrawLine(new Pen(new SolidBrush(boundaryLineColor), 2), new PointF(intX, intY), new PointF(fltX1, fltY1));
float fltx2 = m_rectWorking.Right - (fltX1 - m_rectWorking.Left);
float intX2 = m_rectWorking.Right - (intX - m_rectWorking.Left);
g.DrawLine(new Pen(new SolidBrush(boundaryLineColor), 2), new PointF(fltx2, fltY1), new PointF(intX2, intY));
}
//分割线
int _splitCount = splitCount * 2;
float fltSplitValue = (float)meterDegrees / (float)_splitCount;
for (int i = 0; i <= _splitCount; i++)
{
float fltAngle = (fltStartAngle + fltSplitValue * i - 180) % 360;
float fltY1 = (float)(m_rectWorking.Top + m_rectWorking.Width / 2 - ((m_rectWorking.Width / 2) * Math.Sin(Math.PI * (fltAngle / 180.00F))));
float fltX1 = (float)(m_rectWorking.Left + (m_rectWorking.Width / 2 - ((m_rectWorking.Width / 2) * Math.Cos(Math.PI * (fltAngle / 180.00F)))));
float fltY2 = 0;
float fltX2 = 0;
if (i % 2 == 0)
{
fltY2 = (float)(m_rectWorking.Top + m_rectWorking.Width / 2 - ((m_rectWorking.Width / 2 - 10) * Math.Sin(Math.PI * (fltAngle / 180.00F))));
fltX2 = (float)(m_rectWorking.Left + (m_rectWorking.Width / 2 - ((m_rectWorking.Width / 2 - 10) * Math.Cos(Math.PI * (fltAngle / 180.00F)))));
if (!(meterDegrees == 360 && i == _splitCount))
{
decimal decValue = minValue + (maxValue - minValue) / _splitCount * i;
var txtSize = g.MeasureString(decValue.ToString("0.##"), this.Font);
float fltFY1 = (float)(m_rectWorking.Top - txtSize.Height / 2 + m_rectWorking.Width / 2 - ((m_rectWorking.Width / 2 - 20) * Math.Sin(Math.PI * (fltAngle / 180.00F))));
float fltFX1 = (float)(m_rectWorking.Left - txtSize.Width / 2 + (m_rectWorking.Width / 2 - ((m_rectWorking.Width / 2 - 20) * Math.Cos(Math.PI * (fltAngle / 180.00F)))));
g.DrawString(decValue.ToString("0.##"), Font, new SolidBrush(scaleValueColor), fltFX1, fltFY1);
}
}
else
{
fltY2 = (float)(m_rectWorking.Top + m_rectWorking.Width / 2 - ((m_rectWorking.Width / 2 - 5) * Math.Sin(Math.PI * (fltAngle / 180.00F))));
fltX2 = (float)(m_rectWorking.Left + (m_rectWorking.Width / 2 - ((m_rectWorking.Width / 2 - 5) * Math.Cos(Math.PI * (fltAngle / 180.00F)))));
}
g.DrawLine(new Pen(new SolidBrush(scaleColor), i % 2 == 0 ? 2 : 1), new PointF(fltX1, fltY1), new PointF(fltX2, fltY2));
}
//值文字和固定文字
if (textLocation != MeterTextLocation.None)
{
string str = m_value.ToString("0.##");
var txtSize = g.MeasureString(str, textFont);
float fltY = m_rectWorking.Top + m_rectWorking.Width / 4 - txtSize.Height / 2;
float fltX = m_rectWorking.Left + m_rectWorking.Width / 2 - txtSize.Width / 2;
g.DrawString(str, textFont, new SolidBrush(textColor), new PointF(fltX, fltY));
if (!string.IsNullOrEmpty(fixedText))
{
str = fixedText;
txtSize = g.MeasureString(str, textFont);
fltY = m_rectWorking.Top + m_rectWorking.Width / 4 + txtSize.Height / 2;
fltX = m_rectWorking.Left + m_rectWorking.Width / 2 - txtSize.Width / 2;
g.DrawString(str, textFont, new SolidBrush(textColor), new PointF(fltX, fltY));
}
}
//画指针
g.FillEllipse(new SolidBrush(Color.FromArgb(100, pointerColor.R, pointerColor.G, pointerColor.B)), new Rectangle(m_rectWorking.Left + m_rectWorking.Width / 2 - 10, m_rectWorking.Top + m_rectWorking.Width / 2 - 10, 20, 20));
g.FillEllipse(Brushes.Red, new Rectangle(m_rectWorking.Left + m_rectWorking.Width / 2 - 5, m_rectWorking.Top + m_rectWorking.Width / 2 - 5, 10, 10));
float fltValueAngle = (fltStartAngle + ((float)(m_value - minValue) / (float)(maxValue - minValue)) * (float)meterDegrees - 180) % 360;
float intValueY1 = (float)(m_rectWorking.Top + m_rectWorking.Width / 2 - ((m_rectWorking.Width / 2 - 30) * Math.Sin(Math.PI * (fltValueAngle / 180.00F))));
float intValueX1 = (float)(m_rectWorking.Left + (m_rectWorking.Width / 2 - ((m_rectWorking.Width / 2 - 30) * Math.Cos(Math.PI * (fltValueAngle / 180.00F)))));
g.DrawLine(new Pen(new SolidBrush(pointerColor), 3), intValueX1, intValueY1, m_rectWorking.Left + m_rectWorking.Width / 2, m_rectWorking.Top + m_rectWorking.Width / 2);
}
/// <summary>
/// Enum MeterTextLocation
/// </summary>
public enum MeterTextLocation
{
/// <summary>
/// The none
/// </summary>
None,
/// <summary>
/// The top
/// </summary>
Top,
/// <summary>
/// The bottom
/// </summary>
Bottom
}
}
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