C#仪表盘控件

2015-12-13 14:10:12 访问(5265) 赞(0) 踩(0)

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
using System.Diagnostics;

namespace SlowX.DevExPressAGauge.Controls
{
/// <summary>
/// 仪表盘
/// </summary>
[ToolboxBitmapAttribute(typeof(AGauge), "AGauge.bmp"),
DefaultEvent("ValueInRangeChanged"),
Description("Displays a value on an analog gauge. Raises an event if the value enters one of the definable ranges.")]
public partial class AGauge : Control
{
#region enum, var, delegate, event
public enum NeedleColorEnum
{
Gray = 0,
Red = 1,
Green = 2,
Blue = 3,
Yellow = 4,
Violet = 5,
Magenta = 6
};

private const Byte ZERO = 0;
private const Byte NUMOFCAPS = 5;
private const Byte NUMOFRANGES = 5;

private Single fontBoundY1;
private Single fontBoundY2;
private Bitmap gaugeBitmap;
private Boolean drawGaugeBackground = true;

private Single m_value;
private Boolean[] m_valueIsInRange = { false, false, false, false, false };
private Byte m_CapIdx = 1;
private Color[] m_CapColor = { Color.Black, Color.Black, Color.Black, Color.Black, Color.Black };
private String[] m_CapText = { "", "", "", "", "" };
private Point[] m_CapPosition = { new Point(10, 10), new Point(10, 10), new Point(10, 10), new Point(10, 10), new Point(10, 10) };
private Point m_Center = new Point(100, 100);
private Single m_MinValue = -100;
private Single m_MaxValue = 400;

private Color m_BaseArcColor = Color.Gray;
private Int32 m_BaseArcRadius = 80;
private Int32 m_BaseArcStart = 135;
private Int32 m_BaseArcSweep = 270;
private Int32 m_BaseArcWidth = 2;

private Color m_ScaleLinesInterColor = Color.Black;
private Int32 m_ScaleLinesInterInnerRadius = 73;
private Int32 m_ScaleLinesInterOuterRadius = 80;
private Int32 m_ScaleLinesInterWidth = 1;

private Int32 m_ScaleLinesMinorNumOf = 9;
private Color m_ScaleLinesMinorColor = Color.Gray;
private Int32 m_ScaleLinesMinorInnerRadius = 75;
private Int32 m_ScaleLinesMinorOuterRadius = 80;
private Int32 m_ScaleLinesMinorWidth = 1;

private Single m_ScaleLinesMajorStepValue = 50.0f;
private Color m_ScaleLinesMajorColor = Color.Black;
private Int32 m_ScaleLinesMajorInnerRadius = 70;
private Int32 m_ScaleLinesMajorOuterRadius = 80;
private Int32 m_ScaleLinesMajorWidth = 2;

private Byte m_RangeIdx;
private Boolean[] m_RangeEnabled = { true, true, false, false, false };
private Color[] m_RangeColor = { Color.LightGreen, Color.Red, Color.FromKnownColor(KnownColor.Control), Color.FromKnownColor(KnownColor.Control), Color.FromKnownColor(KnownColor.Control) };
private Single[] m_RangeStartValue = { -100.0f, 300.0f, 0.0f, 0.0f, 0.0f };
private Single[] m_RangeEndValue = { 300.0f, 400.0f, 0.0f, 0.0f, 0.0f };
private Int32[] m_RangeInnerRadius = { 70, 70, 70, 70, 70 };
private Int32[] m_RangeOuterRadius = { 80, 80, 80, 80, 80 };

private Int32 m_ScaleNumbersRadius = 95;
private Color m_ScaleNumbersColor = Color.Black;
private String m_ScaleNumbersFormat;
private Int32 m_ScaleNumbersStartScaleLine;
private Int32 m_ScaleNumbersStepScaleLines = 1;
private Int32 m_ScaleNumbersRotation = 0;

private Int32 m_NeedleType = 0;
private Int32 m_NeedleRadius = 80;
private NeedleColorEnum m_NeedleColor1 = NeedleColorEnum.Gray;
private Color m_NeedleColor2 = Color.DimGray;
private Int32 m_NeedleWidth = 2;

public class ValueInRangeChangedEventArgs : EventArgs
{
public Int32 valueInRange;

public ValueInRangeChangedEventArgs(Int32 valueInRange)
{
this.valueInRange = valueInRange;
}
}

public delegate void ValueInRangeChangedDelegate(Object sender, ValueInRangeChangedEventArgs e);
[Description("This event is raised if the value falls into a defined range.")]
public event ValueInRangeChangedDelegate ValueInRangeChanged;
#endregion

#region hidden , overridden inherited properties
public new Boolean AllowDrop
{
get
{
return false;
}
set
{

}
}
public new Boolean AutoSize
{
get
{
return false;
}
set
{

}
}
public new Boolean ForeColor
{
get
{
return false;
}
set
{
}
}
public new Boolean ImeMode
{
get
{
return false;
}
set
{
}
}

public override System.Drawing.Color BackColor
{
get
{
return base.BackColor;
}
set
{
base.BackColor = value;
drawGaugeBackground = true;
Refresh();
}
}
public override System.Drawing.Font Font
{
get
{
return base.Font;
}
set
{
base.Font = value;
drawGaugeBackground = true;
Refresh();
}
}
public override System.Windows.Forms.ImageLayout BackgroundImageLayout
{
get
{
return base.BackgroundImageLayout;
}
set
{
base.BackgroundImageLayout = value;
drawGaugeBackground = true;
Refresh();
}
}
#endregion

public AGauge()
{
InitializeComponent();

SetStyle(ControlStyles.OptimizedDoubleBuffer, true);
}

#region properties
[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The value.")]
public Single Value
{
get
{
return m_value;
}
set
{
if (m_value != value)
{
m_value = Math.Min(Math.Max(value, m_MinValue), m_MaxValue);

if (this.DesignMode)
{
drawGaugeBackground = true;
}

for (Int32 counter = 0; counter < NUMOFRANGES - 1; counter++)
{
if ((m_RangeStartValue[counter] <= m_value)
&& (m_value <= m_RangeEndValue[counter])
&& (m_RangeEnabled[counter]))
{
if (!m_valueIsInRange[counter])
{
if (ValueInRangeChanged != null)
{
ValueInRangeChanged(this, new ValueInRangeChangedEventArgs(counter));
}
}
}
else
{
m_valueIsInRange[counter] = false;
}
}
Refresh();
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.RefreshProperties(RefreshProperties.All),
System.ComponentModel.Description("The caption index. set this to a value of 0 up to 4 to change the corresponding caption's properties.")]
public Byte Cap_Idx
{
get
{
return m_CapIdx;
}
set
{
if ((m_CapIdx != value)
&& (0 <= value)
&& (value < 5))
{
m_CapIdx = value;
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The color of the caption text.")]
private Color CapColor
{
get
{
return m_CapColor[m_CapIdx];
}
set
{
if (m_CapColor[m_CapIdx] != value)
{
m_CapColor[m_CapIdx] = value;
CapColors = m_CapColor;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(false)]
public Color[] CapColors
{
get
{
return m_CapColor;
}
set
{
m_CapColor = value;
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The text of the caption.")]
public String CapText
{
get
{
return m_CapText[m_CapIdx];
}
set
{
if (m_CapText[m_CapIdx] != value)
{
m_CapText[m_CapIdx] = value;
CapsText = m_CapText;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(false)]
public String[] CapsText
{
get
{
return m_CapText;
}
set
{
for (Int32 counter = 0; counter < 5; counter++)
{
m_CapText[counter] = value[counter];
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The position of the caption.")]
public Point CapPosition
{
get
{
return m_CapPosition[m_CapIdx];
}
set
{
if (m_CapPosition[m_CapIdx] != value)
{
m_CapPosition[m_CapIdx] = value;
CapsPosition = m_CapPosition;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(false)]
public Point[] CapsPosition
{
get
{
return m_CapPosition;
}
set
{
m_CapPosition = value;
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The center of the gauge (in the control's client area).")]
public Point Center
{
get
{
return m_Center;
}
set
{
if (m_Center != value)
{
m_Center = value;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The minimum value to show on the scale.")]
public Single MinValue
{
get
{
return m_MinValue;
}
set
{
if ((m_MinValue != value)
&& (value < m_MaxValue))
{
m_MinValue = value;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The maximum value to show on the scale.")]
public Single MaxValue
{
get
{
return m_MaxValue;
}
set
{
if ((m_MaxValue != value)
&& (value > m_MinValue))
{
m_MaxValue = value;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The color of the base arc.")]
public Color BaseArcColor
{
get
{
return m_BaseArcColor;
}
set
{
if (m_BaseArcColor != value)
{
m_BaseArcColor = value;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The radius of the base arc.")]
public Int32 BaseArcRadius
{
get
{
return m_BaseArcRadius;
}
set
{
if (m_BaseArcRadius != value)
{
m_BaseArcRadius = value;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The start angle of the base arc.")]
public Int32 BaseArcStart
{
get
{
return m_BaseArcStart;
}
set
{
if (m_BaseArcStart != value)
{
m_BaseArcStart = value;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The sweep angle of the base arc.")]
public Int32 BaseArcSweep
{
get
{
return m_BaseArcSweep;
}
set
{
if (m_BaseArcSweep != value)
{
m_BaseArcSweep = value;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The width of the base arc.")]
public Int32 BaseArcWidth
{
get
{
return m_BaseArcWidth;
}
set
{
if (m_BaseArcWidth != value)
{
m_BaseArcWidth = value;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The color of the inter scale lines which are the middle scale lines for an uneven number of minor scale lines.")]
public Color ScaleLinesInterColor
{
get
{
return m_ScaleLinesInterColor;
}
set
{
if (m_ScaleLinesInterColor != value)
{
m_ScaleLinesInterColor = value;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The inner radius of the inter scale lines which are the middle scale lines for an uneven number of minor scale lines.")]
public Int32 ScaleLinesInterInnerRadius
{
get
{
return m_ScaleLinesInterInnerRadius;
}
set
{
if (m_ScaleLinesInterInnerRadius != value)
{
m_ScaleLinesInterInnerRadius = value;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The outer radius of the inter scale lines which are the middle scale lines for an uneven number of minor scale lines.")]
public Int32 ScaleLinesInterOuterRadius
{
get
{
return m_ScaleLinesInterOuterRadius;
}
set
{
if (m_ScaleLinesInterOuterRadius != value)
{
m_ScaleLinesInterOuterRadius = value;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The width of the inter scale lines which are the middle scale lines for an uneven number of minor scale lines.")]
public Int32 ScaleLinesInterWidth
{
get
{
return m_ScaleLinesInterWidth;
}
set
{
if (m_ScaleLinesInterWidth != value)
{
m_ScaleLinesInterWidth = value;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The number of minor scale lines.")]
public Int32 ScaleLinesMinorNumOf
{
get
{
return m_ScaleLinesMinorNumOf;
}
set
{
if (m_ScaleLinesMinorNumOf != value)
{
m_ScaleLinesMinorNumOf = value;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The color of the minor scale lines.")]
public Color ScaleLinesMinorColor
{
get
{
return m_ScaleLinesMinorColor;
}
set
{
if (m_ScaleLinesMinorColor != value)
{
m_ScaleLinesMinorColor = value;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The inner radius of the minor scale lines.")]
public Int32 ScaleLinesMinorInnerRadius
{
get
{
return m_ScaleLinesMinorInnerRadius;
}
set
{
if (m_ScaleLinesMinorInnerRadius != value)
{
m_ScaleLinesMinorInnerRadius = value;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The outer radius of the minor scale lines.")]
public Int32 ScaleLinesMinorOuterRadius
{
get
{
return m_ScaleLinesMinorOuterRadius;
}
set
{
if (m_ScaleLinesMinorOuterRadius != value)
{
m_ScaleLinesMinorOuterRadius = value;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The width of the minor scale lines.")]
public Int32 ScaleLinesMinorWidth
{
get
{
return m_ScaleLinesMinorWidth;
}
set
{
if (m_ScaleLinesMinorWidth != value)
{
m_ScaleLinesMinorWidth = value;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The step value of the major scale lines.")]
public Single ScaleLinesMajorStepValue
{
get
{
return m_ScaleLinesMajorStepValue;
}
set
{
if ((m_ScaleLinesMajorStepValue != value) && (value > 0))
{
m_ScaleLinesMajorStepValue = Math.Max(Math.Min(value, m_MaxValue), m_MinValue);
drawGaugeBackground = true;
Refresh();
}
}
}
[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The color of the major scale lines.")]
public Color ScaleLinesMajorColor
{
get
{
return m_ScaleLinesMajorColor;
}
set
{
if (m_ScaleLinesMajorColor != value)
{
m_ScaleLinesMajorColor = value;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The inner radius of the major scale lines.")]
public Int32 ScaleLinesMajorInnerRadius
{
get
{
return m_ScaleLinesMajorInnerRadius;
}
set
{
if (m_ScaleLinesMajorInnerRadius != value)
{
m_ScaleLinesMajorInnerRadius = value;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The outer radius of the major scale lines.")]
public Int32 ScaleLinesMajorOuterRadius
{
get
{
return m_ScaleLinesMajorOuterRadius;
}
set
{
if (m_ScaleLinesMajorOuterRadius != value)
{
m_ScaleLinesMajorOuterRadius = value;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The width of the major scale lines.")]
public Int32 ScaleLinesMajorWidth
{
get
{
return m_ScaleLinesMajorWidth;
}
set
{
if (m_ScaleLinesMajorWidth != value)
{
m_ScaleLinesMajorWidth = value;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.RefreshProperties(RefreshProperties.All),
System.ComponentModel.Description("The range index. set this to a value of 0 up to 4 to change the corresponding range's properties.")]
public Byte Range_Idx
{
get
{
return m_RangeIdx;
}
set
{
if ((m_RangeIdx != value)
&& (0 <= value)
&& (value < NUMOFRANGES))
{
m_RangeIdx = value;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("Enables or disables the range selected by Range_Idx.")]
public Boolean RangeEnabled
{
get
{
return m_RangeEnabled[m_RangeIdx];
}
set
{
if (m_RangeEnabled[m_RangeIdx] != value)
{
m_RangeEnabled[m_RangeIdx] = value;
RangesEnabled = m_RangeEnabled;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(false)]
public Boolean[] RangesEnabled
{
get
{
return m_RangeEnabled;
}
set
{
m_RangeEnabled = value;
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The color of the range.")]
public Color RangeColor
{
get
{
return m_RangeColor[m_RangeIdx];
}
set
{
if (m_RangeColor[m_RangeIdx] != value)
{
m_RangeColor[m_RangeIdx] = value;
RangesColor = m_RangeColor;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(false)]
public Color[] RangesColor
{
get
{
return m_RangeColor;
}
set
{
m_RangeColor = value;
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The start value of the range, must be less than RangeEndValue.")]
public Single RangeStartValue
{
get
{
return m_RangeStartValue[m_RangeIdx];
}
set
{
if ((m_RangeStartValue[m_RangeIdx] != value)
&& (value < m_RangeEndValue[m_RangeIdx]))
{
m_RangeStartValue[m_RangeIdx] = value;
RangesStartValue = m_RangeStartValue;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(false)]
public Single[] RangesStartValue
{
get
{
return m_RangeStartValue;
}
set
{
m_RangeStartValue = value;
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The end value of the range. Must be greater than RangeStartValue.")]
public Single RangeEndValue
{
get
{
return m_RangeEndValue[m_RangeIdx];
}
set
{
if ((m_RangeEndValue[m_RangeIdx] != value)
&& (m_RangeStartValue[m_RangeIdx] < value))
{
m_RangeEndValue[m_RangeIdx] = value;
RangesEndValue = m_RangeEndValue;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(false)]
public Single[] RangesEndValue
{
get
{
return m_RangeEndValue;
}
set
{
m_RangeEndValue = value;
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The inner radius of the range.")]
public Int32 RangeInnerRadius
{
get
{
return m_RangeInnerRadius[m_RangeIdx];
}
set
{
if (m_RangeInnerRadius[m_RangeIdx] != value)
{
m_RangeInnerRadius[m_RangeIdx] = value;
RangesInnerRadius = m_RangeInnerRadius;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(false)]
public Int32[] RangesInnerRadius
{
get
{
return m_RangeInnerRadius;
}
set
{
m_RangeInnerRadius = value;
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The inner radius of the range.")]
public Int32 RangeOuterRadius
{
get
{
return m_RangeOuterRadius[m_RangeIdx];
}
set
{
if (m_RangeOuterRadius[m_RangeIdx] != value)
{
m_RangeOuterRadius[m_RangeIdx] = value;
RangesOuterRadius = m_RangeOuterRadius;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(false)]
public Int32[] RangesOuterRadius
{
get
{
return m_RangeOuterRadius;
}
set
{
m_RangeOuterRadius = value;
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The radius of the scale numbers.")]
public Int32 ScaleNumbersRadius
{
get
{
return m_ScaleNumbersRadius;
}
set
{
if (m_ScaleNumbersRadius != value)
{
m_ScaleNumbersRadius = value;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The color of the scale numbers.")]
public Color ScaleNumbersColor
{
get
{
return m_ScaleNumbersColor;
}
set
{
if (m_ScaleNumbersColor != value)
{
m_ScaleNumbersColor = value;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The format of the scale numbers.")]
public String ScaleNumbersFormat
{
get
{
return m_ScaleNumbersFormat;
}
set
{
if (m_ScaleNumbersFormat != value)
{
m_ScaleNumbersFormat = value;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The number of the scale line to start writing numbers next to.")]
public Int32 ScaleNumbersStartScaleLine
{
get
{
return m_ScaleNumbersStartScaleLine;
}
set
{
if (m_ScaleNumbersStartScaleLine != value)
{
m_ScaleNumbersStartScaleLine = Math.Max(value, 1);
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The number of scale line steps for writing numbers.")]
public Int32 ScaleNumbersStepScaleLines
{
get
{
return m_ScaleNumbersStepScaleLines;
}
set
{
if (m_ScaleNumbersStepScaleLines != value)
{
m_ScaleNumbersStepScaleLines = Math.Max(value, 1);
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The angle relative to the tangent of the base arc at a scale line that is used to rotate numbers. set to 0 for no rotation or e.g. set to 90.")]
public Int32 ScaleNumbersRotation
{
get
{
return m_ScaleNumbersRotation;
}
set
{
if (m_ScaleNumbersRotation != value)
{
m_ScaleNumbersRotation = value;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The type of the needle, currently only type 0 and 1 are supported. Type 0 looks nicers but if you experience performance problems you might consider using type 1.")]
public Int32 NeedleType
{
get
{
return m_NeedleType;
}
set
{
if (m_NeedleType != value)
{
m_NeedleType = value;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The radius of the needle.")]
public Int32 NeedleRadius
{
get
{
return m_NeedleRadius;
}
set
{
if (m_NeedleRadius != value)
{
m_NeedleRadius = value;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The first color of the needle.")]
public NeedleColorEnum NeedleColor1
{
get
{
return m_NeedleColor1;
}
set
{
if (m_NeedleColor1 != value)
{
m_NeedleColor1 = value;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The second color of the needle.")]
public Color NeedleColor2
{
get
{
return m_NeedleColor2;
}
set
{
if (m_NeedleColor2 != value)
{
m_NeedleColor2 = value;
drawGaugeBackground = true;
Refresh();
}
}
}

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("The width of the needle.")]
public Int32 NeedleWidth
{
get
{
return m_NeedleWidth;
}
set
{
if (m_NeedleWidth != value)
{
m_NeedleWidth = value;
drawGaugeBackground = true;
Refresh();
}
}
}
#endregion

#region helper
private void FindFontBounds()
{
//find upper and lower bounds for numeric characters
Int32 c1;
Int32 c2;
Boolean boundfound;
Bitmap b;
Graphics g;
SolidBrush backBrush = new SolidBrush(Color.White);
SolidBrush foreBrush = new SolidBrush(Color.Black);
SizeF boundingBox;

b = new Bitmap(5, 5);
g = Graphics.FromImage(b);
boundingBox = g.MeasureString("0123456789", Font, -1, StringFormat.GenericTypographic);
b = new Bitmap((Int32)(boundingBox.Width), (Int32)(boundingBox.Height));
g = Graphics.FromImage(b);
g.FillRectangle(backBrush, 0.0F, 0.0F, boundingBox.Width, boundingBox.Height);
g.DrawString("0123456789", Font, foreBrush, 0.0F, 0.0F, StringFormat.GenericTypographic);

fontBoundY1 = 0;
fontBoundY2 = 0;
c1 = 0;
boundfound = false;
while ((c1 < b.Height) && (!boundfound))
{
c2 = 0;
while ((c2 < b.Width) && (!boundfound))
{
if (b.GetPixel(c2, c1) != backBrush.Color)
{
fontBoundY1 = c1;
boundfound = true;
}
c2++;
}
c1++;
}

c1 = b.Height - 1;
boundfound = false;
while ((0 < c1) && (!boundfound))
{
c2 = 0;
while ((c2 < b.Width) && (!boundfound))
{
if (b.GetPixel(c2, c1) != backBrush.Color)
{
fontBoundY2 = c1;
boundfound = true;
}
c2++;
}
c1--;
}
}
#endregion

#region base member overrides
protected override void OnPaintBackground(PaintEventArgs pevent)
{
}

protected override void OnPaint(PaintEventArgs pe)
{
if ((Width < 10) || (Height < 10))
{
return;
}

if (drawGaugeBackground)
{
drawGaugeBackground = false;

FindFontBounds();

gaugeBitmap = new Bitmap(Width, Height, pe.Graphics);
Graphics ggr = Graphics.FromImage(gaugeBitmap);
ggr.FillRectangle(new SolidBrush(BackColor), ClientRectangle);

if (BackgroundImage != null)
{
switch (BackgroundImageLayout)
{
case ImageLayout.Center:
ggr.DrawImageUnscaled(BackgroundImage, Width / 2 - BackgroundImage.Width / 2, Height / 2 - BackgroundImage.Height / 2);
break;
case ImageLayout.None:
ggr.DrawImageUnscaled(BackgroundImage, 0, 0);
break;
case ImageLayout.Stretch:
ggr.DrawImage(BackgroundImage, 0, 0, Width, Height);
break;
case ImageLayout.Tile:
Int32 pixelOffsetX = 0;
Int32 pixelOffsetY = 0;
while (pixelOffsetX < Width)
{
pixelOffsetY = 0;
while (pixelOffsetY < Height)
{
ggr.DrawImageUnscaled(BackgroundImage, pixelOffsetX, pixelOffsetY);
pixelOffsetY += BackgroundImage.Height;
}
pixelOffsetX += BackgroundImage.Width;
}
break;
case ImageLayout.Zoom:
if ((Single)(BackgroundImage.Width / Width) < (Single)(BackgroundImage.Height / Height))
{
ggr.DrawImage(BackgroundImage, 0, 0, Height, Height);
}
else
{
ggr.DrawImage(BackgroundImage, 0, 0, Width, Width);
}
break;
}
}

ggr.SmoothingMode = SmoothingMode.HighQuality;
ggr.PixelOffsetMode = PixelOffsetMode.HighQuality;

GraphicsPath gp = new GraphicsPath();
Single rangeStartAngle;
Single rangeSweepAngle;
for (Int32 counter = 0; counter < NUMOFRANGES; counter++)
{
if (m_RangeEndValue[counter] > m_RangeStartValue[counter]
&& m_RangeEnabled[counter])
{
rangeStartAngle = m_BaseArcStart + (m_RangeStartValue[counter] - m_MinValue) * m_BaseArcSweep / (m_MaxValue - m_MinValue);
rangeSweepAngle = (m_RangeEndValue[counter] - m_RangeStartValue[counter]) * m_BaseArcSweep / (m_MaxValue - m_MinValue);
gp.Reset();
gp.AddPie(new Rectangle(m_Center.X - m_RangeOuterRadius[counter], m_Center.Y - m_RangeOuterRadius[counter], 2 * m_RangeOuterRadius[counter], 2 * m_RangeOuterRadius[counter]), rangeStartAngle, rangeSweepAngle);
gp.Reverse();
gp.AddPie(new Rectangle(m_Center.X - m_RangeInnerRadius[counter], m_Center.Y - m_RangeInnerRadius[counter], 2 * m_RangeInnerRadius[counter], 2 * m_RangeInnerRadius[counter]), rangeStartAngle, rangeSweepAngle);
gp.Reverse();
ggr.SetClip(gp);
ggr.FillPie(new SolidBrush(m_RangeColor[counter]), new Rectangle(m_Center.X - m_RangeOuterRadius[counter], m_Center.Y - m_RangeOuterRadius[counter], 2 * m_RangeOuterRadius[counter], 2 * m_RangeOuterRadius[counter]), rangeStartAngle, rangeSweepAngle);
}
}

ggr.SetClip(ClientRectangle);
if (m_BaseArcRadius > 0)
{
ggr.DrawArc(new Pen(m_BaseArcColor, m_BaseArcWidth), new Rectangle(m_Center.X - m_BaseArcRadius, m_Center.Y - m_BaseArcRadius, 2 * m_BaseArcRadius, 2 * m_BaseArcRadius), m_BaseArcStart, m_BaseArcSweep);
}

String valueText = "";
SizeF boundingBox;
Single countValue = 0;
Int32 counter1 = 0;
while (countValue <= (m_MaxValue - m_MinValue))
{
valueText = (m_MinValue + countValue).ToString(m_ScaleNumbersFormat);
ggr.ResetTransform();
boundingBox = ggr.MeasureString(valueText, Font, -1, StringFormat.GenericTypographic);

gp.Reset();
gp.AddEllipse(new Rectangle(m_Center.X - m_ScaleLinesMajorOuterRadius, m_Center.Y - m_ScaleLinesMajorOuterRadius, 2 * m_ScaleLinesMajorOuterRadius, 2 * m_ScaleLinesMajorOuterRadius));
gp.Reverse();
gp.AddEllipse(new Rectangle(m_Center.X - m_ScaleLinesMajorInnerRadius, m_Center.Y - m_ScaleLinesMajorInnerRadius, 2 * m_ScaleLinesMajorInnerRadius, 2 * m_ScaleLinesMajorInnerRadius));
gp.Reverse();
ggr.SetClip(gp);

ggr.DrawLine(new Pen(m_ScaleLinesMajorColor, m_ScaleLinesMajorWidth),
(Single)(Center.X),
(Single)(Center.Y),
(Single)(Center.X + 2 * m_ScaleLinesMajorOuterRadius * Math.Cos((m_BaseArcStart + countValue * m_BaseArcSweep / (m_MaxValue - m_MinValue)) * Math.PI / 180.0)),
(Single)(Center.Y + 2 * m_ScaleLinesMajorOuterRadius * Math.Sin((m_BaseArcStart + countValue * m_BaseArcSweep / (m_MaxValue - m_MinValue)) * Math.PI / 180.0)));

gp.Reset();
gp.AddEllipse(new Rectangle(m_Center.X - m_ScaleLinesMinorOuterRadius, m_Center.Y - m_ScaleLinesMinorOuterRadius, 2 * m_ScaleLinesMinorOuterRadius, 2 * m_ScaleLinesMinorOuterRadius));
gp.Reverse();
gp.AddEllipse(new Rectangle(m_Center.X - m_ScaleLinesMinorInnerRadius, m_Center.Y - m_ScaleLinesMinorInnerRadius, 2 * m_ScaleLinesMinorInnerRadius, 2 * m_ScaleLinesMinorInnerRadius));
gp.Reverse();
ggr.SetClip(gp);

if (countValue < (m_MaxValue - m_MinValue))
{
for (Int32 counter2 = 1; counter2 <= m_ScaleLinesMinorNumOf; counter2++)
{
if (((m_ScaleLinesMinorNumOf % 2) == 1) && ((Int32)(m_ScaleLinesMinorNumOf / 2) + 1 == counter2))
{
gp.Reset();
gp.AddEllipse(new Rectangle(m_Center.X - m_ScaleLinesInterOuterRadius, m_Center.Y - m_ScaleLinesInterOuterRadius, 2 * m_ScaleLinesInterOuterRadius, 2 * m_ScaleLinesInterOuterRadius));
gp.Reverse();
gp.AddEllipse(new Rectangle(m_Center.X - m_ScaleLinesInterInnerRadius, m_Center.Y - m_ScaleLinesInterInnerRadius, 2 * m_ScaleLinesInterInnerRadius, 2 * m_ScaleLinesInterInnerRadius));
gp.Reverse();
ggr.SetClip(gp);

ggr.DrawLine(new Pen(m_ScaleLinesInterColor, m_ScaleLinesInterWidth),
(Single)(Center.X),
(Single)(Center.Y),
(Single)(Center.X + 2 * m_ScaleLinesInterOuterRadius * Math.Cos((m_BaseArcStart + countValue * m_BaseArcSweep / (m_MaxValue - m_MinValue) + counter2 * m_BaseArcSweep / (((Single)((m_MaxValue - m_MinValue) / m_ScaleLinesMajorStepValue)) * (m_ScaleLinesMinorNumOf + 1))) * Math.PI / 180.0)),
(Single)(Center.Y + 2 * m_ScaleLinesInterOuterRadius * Math.Sin((m_BaseArcStart + countValue * m_BaseArcSweep / (m_MaxValue - m_MinValue) + counter2 * m_BaseArcSweep / (((Single)((m_MaxValue - m_MinValue) / m_ScaleLinesMajorStepValue)) * (m_ScaleLinesMinorNumOf + 1))) * Math.PI / 180.0)));

gp.Reset();
gp.AddEllipse(new Rectangle(m_Center.X - m_ScaleLinesMinorOuterRadius, m_Center.Y - m_ScaleLinesMinorOuterRadius, 2 * m_ScaleLinesMinorOuterRadius, 2 * m_ScaleLinesMinorOuterRadius));
gp.Reverse();
gp.AddEllipse(new Rectangle(m_Center.X - m_ScaleLinesMinorInnerRadius, m_Center.Y - m_ScaleLinesMinorInnerRadius, 2 * m_ScaleLinesMinorInnerRadius, 2 * m_ScaleLinesMinorInnerRadius));
gp.Reverse();
ggr.SetClip(gp);
}
else
{
ggr.DrawLine(new Pen(m_ScaleLinesMinorColor, m_ScaleLinesMinorWidth),
(Single)(Center.X),
(Single)(Center.Y),
(Single)(Center.X + 2 * m_ScaleLinesMinorOuterRadius * Math.Cos((m_BaseArcStart + countValue * m_BaseArcSweep / (m_MaxValue - m_MinValue) + counter2 * m_BaseArcSweep / (((Single)((m_MaxValue - m_MinValue) / m_ScaleLinesMajorStepValue)) * (m_ScaleLinesMinorNumOf + 1))) * Math.PI / 180.0)),
(Single)(Center.Y + 2 * m_ScaleLinesMinorOuterRadius * Math.Sin((m_BaseArcStart + countValue * m_BaseArcSweep / (m_MaxValue - m_MinValue) + counter2 * m_BaseArcSweep / (((Single)((m_MaxValue - m_MinValue) / m_ScaleLinesMajorStepValue)) * (m_ScaleLinesMinorNumOf + 1))) * Math.PI / 180.0)));
}
}
}

ggr.SetClip(ClientRectangle);

if (m_ScaleNumbersRotation != 0)
{
ggr.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias;
ggr.RotateTransform(90.0F + m_BaseArcStart + countValue * m_BaseArcSweep / (m_MaxValue - m_MinValue));
}

ggr.TranslateTransform((Single)(Center.X + m_ScaleNumbersRadius * Math.Cos((m_BaseArcStart + countValue * m_BaseArcSweep / (m_MaxValue - m_MinValue)) * Math.PI / 180.0f)),
(Single)(Center.Y + m_ScaleNumbersRadius * Math.Sin((m_BaseArcStart + countValue * m_BaseArcSweep / (m_MaxValue - m_MinValue)) * Math.PI / 180.0f)),
System.Drawing.Drawing2D.MatrixOrder.Append);

if (counter1 >= ScaleNumbersStartScaleLine - 1)
{
ggr.DrawString(valueText, Font, new SolidBrush(m_ScaleNumbersColor), -boundingBox.Width / 2, -fontBoundY1 - (fontBoundY2 - fontBoundY1 + 1) / 2, StringFormat.GenericTypographic);
}

countValue += m_ScaleLinesMajorStepValue;
counter1++;
}

ggr.ResetTransform();
ggr.SetClip(ClientRectangle);

if (m_ScaleNumbersRotation != 0)
{
ggr.TextRenderingHint = System.Drawing.Text.TextRenderingHint.SystemDefault;
}

for (Int32 counter = 0; counter < NUMOFCAPS; counter++)
{
if (m_CapText[counter] != "")
{
ggr.DrawString(m_CapText[counter], Font, new SolidBrush(m_CapColor[counter]), m_CapPosition[counter].X, m_CapPosition[counter].Y, StringFormat.GenericTypographic);
}
}
}

pe.Graphics.DrawImageUnscaled(gaugeBitmap, 0, 0);
pe.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
pe.Graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;

Single brushAngle = (Int32)(m_BaseArcStart + (m_value - m_MinValue) * m_BaseArcSweep / (m_MaxValue - m_MinValue)) % 360;
Double needleAngle = brushAngle * Math.PI / 180;

switch (m_NeedleType)
{
case 0:
PointF[] points = new PointF[3];
Brush brush1 = Brushes.White;
Brush brush2 = Brushes.White;
Brush brush3 = Brushes.White;
Brush brush4 = Brushes.White;

Brush brushBucket = Brushes.White;
Int32 subcol = (Int32)(((brushAngle + 225) % 180) * 100 / 180);
Int32 subcol2 = (Int32)(((brushAngle + 135) % 180) * 100 / 180);

pe.Graphics.FillEllipse(new SolidBrush(m_NeedleColor2), Center.X - m_NeedleWidth * 3, Center.Y - m_NeedleWidth * 3, m_NeedleWidth * 6, m_NeedleWidth * 6);
switch (m_NeedleColor1)
{
case NeedleColorEnum.Gray:
brush1 = new SolidBrush(Color.FromArgb(80 + subcol, 80 + subcol, 80 + subcol));
brush2 = new SolidBrush(Color.FromArgb(180 - subcol, 180 - subcol, 180 - subcol));
brush3 = new SolidBrush(Color.FromArgb(80 + subcol2, 80 + subcol2, 80 + subcol2));
brush4 = new SolidBrush(Color.FromArgb(180 - subcol2, 180 - subcol2, 180 - subcol2));
pe.Graphics.DrawEllipse(Pens.Gray, Center.X - m_NeedleWidth * 3, Center.Y - m_NeedleWidth * 3, m_NeedleWidth * 6, m_NeedleWidth * 6);
break;
case NeedleColorEnum.Red:
brush1 = new SolidBrush(Color.FromArgb(145 + subcol, subcol, subcol));
brush2 = new SolidBrush(Color.FromArgb(245 - subcol, 100 - subcol, 100 - subcol));
brush3 = new SolidBrush(Color.FromArgb(145 + subcol2, subcol2, subcol2));
brush4 = new SolidBrush(Color.FromArgb(245 - subcol2, 100 - subcol2, 100 - subcol2));
pe.Graphics.DrawEllipse(Pens.Red, Center.X - m_NeedleWidth * 3, Center.Y - m_NeedleWidth * 3, m_NeedleWidth * 6, m_NeedleWidth * 6);
break;
case NeedleColorEnum.Green:
brush1 = new SolidBrush(Color.FromArgb(subcol, 145 + subcol, subcol));
brush2 = new SolidBrush(Color.FromArgb(100 - subcol, 245 - subcol, 100 - subcol));
brush3 = new SolidBrush(Color.FromArgb(subcol2, 145 + subcol2, subcol2));
brush4 = new SolidBrush(Color.FromArgb(100 - subcol2, 245 - subcol2, 100 - subcol2));
pe.Graphics.DrawEllipse(Pens.Green, Center.X - m_NeedleWidth * 3, Center.Y - m_NeedleWidth * 3, m_NeedleWidth * 6, m_NeedleWidth * 6);
break;
case NeedleColorEnum.Blue:
brush1 = new SolidBrush(Color.FromArgb(subcol, subcol, 145 + subcol));
brush2 = new SolidBrush(Color.FromArgb(100 - subcol, 100 - subcol, 245 - subcol));
brush3 = new SolidBrush(Color.FromArgb(subcol2, subcol2, 145 + subcol2));
brush4 = new SolidBrush(Color.FromArgb(100 - subcol2, 100 - subcol2, 245 - subcol2));
pe.Graphics.DrawEllipse(Pens.Blue, Center.X - m_NeedleWidth * 3, Center.Y - m_NeedleWidth * 3, m_NeedleWidth * 6, m_NeedleWidth * 6);
break;
case NeedleColorEnum.Magenta:
brush1 = new SolidBrush(Color.FromArgb(subcol, 145 + subcol, 145 + subcol));
brush2 = new SolidBrush(Color.FromArgb(100 - subcol, 245 - subcol, 245 - subcol));
brush3 = new SolidBrush(Color.FromArgb(subcol2, 145 + subcol2, 145 + subcol2));
brush4 = new SolidBrush(Color.FromArgb(100 - subcol2, 245 - subcol2, 245 - subcol2));
pe.Graphics.DrawEllipse(Pens.Magenta, Center.X - m_NeedleWidth * 3, Center.Y - m_NeedleWidth * 3, m_NeedleWidth * 6, m_NeedleWidth * 6);
break;
case NeedleColorEnum.Violet:
brush1 = new SolidBrush(Color.FromArgb(145 + subcol, subcol, 145 + subcol));
brush2 = new SolidBrush(Color.FromArgb(245 - subcol, 100 - subcol, 245 - subcol));
brush3 = new SolidBrush(Color.FromArgb(145 + subcol2, subcol2, 145 + subcol2));
brush4 = new SolidBrush(Color.FromArgb(245 - subcol2, 100 - subcol2, 245 - subcol2));
pe.Graphics.DrawEllipse(Pens.Violet, Center.X - m_NeedleWidth * 3, Center.Y - m_NeedleWidth * 3, m_NeedleWidth * 6, m_NeedleWidth * 6);
break;
case NeedleColorEnum.Yellow:
brush1 = new SolidBrush(Color.FromArgb(145 + subcol, 145 + subcol, subcol));
brush2 = new SolidBrush(Color.FromArgb(245 - subcol, 245 - subcol, 100 - subcol));
brush3 = new SolidBrush(Color.FromArgb(145 + subcol2, 145 + subcol2, subcol2));
brush4 = new SolidBrush(Color.FromArgb(245 - subcol2, 245 - subcol2, 100 - subcol2));
pe.Graphics.DrawEllipse(Pens.Violet, Center.X - m_NeedleWidth * 3, Center.Y - m_NeedleWidth * 3, m_NeedleWidth * 6, m_NeedleWidth * 6);
break;
}

if (Math.Floor((Single)(((brushAngle + 225) % 360) / 180.0)) == 0)
{
brushBucket = brush1;
brush1 = brush2;
brush2 = brushBucket;
}

if (Math.Floor((Single)(((brushAngle + 135) % 360) / 180.0)) == 0)
{
brush4 = brush3;
}

points[0].X = (Single)(Center.X + m_NeedleRadius * Math.Cos(needleAngle));
points[0].Y = (Single)(Center.Y + m_NeedleRadius * Math.Sin(needleAngle));
points[1].X = (Single)(Center.X - m_NeedleRadius / 20 * Math.Cos(needleAngle));
points[1].Y = (Single)(Center.Y - m_NeedleRadius / 20 * Math.Sin(needleAngle));
points[2].X = (Single)(Center.X - m_NeedleRadius / 5 * Math.Cos(needleAngle) + m_NeedleWidth * 2 * Math.Cos(needleAngle + Math.PI / 2));
points[2].Y = (Single)(Center.Y - m_NeedleRadius / 5 * Math.Sin(needleAngle) + m_NeedleWidth * 2 * Math.Sin(needleAngle + Math.PI / 2));
pe.Graphics.FillPolygon(brush1, points);

points[2].X = (Single)(Center.X - m_NeedleRadius / 5 * Math.Cos(needleAngle) + m_NeedleWidth * 2 * Math.Cos(needleAngle - Math.PI / 2));
points[2].Y = (Single)(Center.Y - m_NeedleRadius / 5 * Math.Sin(needleAngle) + m_NeedleWidth * 2 * Math.Sin(needleAngle - Math.PI / 2));
pe.Graphics.FillPolygon(brush2, points);

points[0].X = (Single)(Center.X - (m_NeedleRadius / 20 - 1) * Math.Cos(needleAngle));
points[0].Y = (Single)(Center.Y - (m_NeedleRadius / 20 - 1) * Math.Sin(needleAngle));
points[1].X = (Single)(Center.X - m_NeedleRadius / 5 * Math.Cos(needleAngle) + m_NeedleWidth * 2 * Math.Cos(needleAngle + Math.PI / 2));
points[1].Y = (Single)(Center.Y - m_NeedleRadius / 5 * Math.Sin(needleAngle) + m_NeedleWidth * 2 * Math.Sin(needleAngle + Math.PI / 2));
points[2].X = (Single)(Center.X - m_NeedleRadius / 5 * Math.Cos(needleAngle) + m_NeedleWidth * 2 * Math.Cos(needleAngle - Math.PI / 2));
points[2].Y = (Single)(Center.Y - m_NeedleRadius / 5 * Math.Sin(needleAngle) + m_NeedleWidth * 2 * Math.Sin(needleAngle - Math.PI / 2));
pe.Graphics.FillPolygon(brush4, points);

points[0].X = (Single)(Center.X - m_NeedleRadius / 20 * Math.Cos(needleAngle));
points[0].Y = (Single)(Center.Y - m_NeedleRadius / 20 * Math.Sin(needleAngle));
points[1].X = (Single)(Center.X + m_NeedleRadius * Math.Cos(needleAngle));
points[1].Y = (Single)(Center.Y + m_NeedleRadius * Math.Sin(needleAngle));

pe.Graphics.DrawLine(new Pen(m_NeedleColor2), Center.X, Center.Y, points[0].X, points[0].Y);
pe.Graphics.DrawLine(new Pen(m_NeedleColor2), Center.X, Center.Y, points[1].X, points[1].Y);
break;
case 1:
Point startPoint = new Point((Int32)(Center.X - m_NeedleRadius / 8 * Math.Cos(needleAngle)),
(Int32)(Center.Y - m_NeedleRadius / 8 * Math.Sin(needleAngle)));
Point endPoint = new Point((Int32)(Center.X + m_NeedleRadius * Math.Cos(needleAngle)),
(Int32)(Center.Y + m_NeedleRadius * Math.Sin(needleAngle)));

pe.Graphics.FillEllipse(new SolidBrush(m_NeedleColor2), Center.X - m_NeedleWidth * 3, Center.Y - m_NeedleWidth * 3, m_NeedleWidth * 6, m_NeedleWidth * 6);

switch (m_NeedleColor1)
{
case NeedleColorEnum.Gray:
pe.Graphics.DrawLine(new Pen(Color.DarkGray, m_NeedleWidth), Center.X, Center.Y, endPoint.X, endPoint.Y);
pe.Graphics.DrawLine(new Pen(Color.DarkGray, m_NeedleWidth), Center.X, Center.Y, startPoint.X, startPoint.Y);
break;
case NeedleColorEnum.Red:
pe.Graphics.DrawLine(new Pen(Color.Red, m_NeedleWidth), Center.X, Center.Y, endPoint.X, endPoint.Y);
pe.Graphics.DrawLine(new Pen(Color.Red, m_NeedleWidth), Center.X, Center.Y, startPoint.X, startPoint.Y);
break;
case NeedleColorEnum.Green:
pe.Graphics.DrawLine(new Pen(Color.Green, m_NeedleWidth), Center.X, Center.Y, endPoint.X, endPoint.Y);
pe.Graphics.DrawLine(new Pen(Color.Green, m_NeedleWidth), Center.X, Center.Y, startPoint.X, startPoint.Y);
break;
case NeedleColorEnum.Blue:
pe.Graphics.DrawLine(new Pen(Color.Blue, m_NeedleWidth), Center.X, Center.Y, endPoint.X, endPoint.Y);
pe.Graphics.DrawLine(new Pen(Color.Blue, m_NeedleWidth), Center.X, Center.Y, startPoint.X, startPoint.Y);
break;
case NeedleColorEnum.Magenta:
pe.Graphics.DrawLine(new Pen(Color.Magenta, m_NeedleWidth), Center.X, Center.Y, endPoint.X, endPoint.Y);
pe.Graphics.DrawLine(new Pen(Color.Magenta, m_NeedleWidth), Center.X, Center.Y, startPoint.X, startPoint.Y);
break;
case NeedleColorEnum.Violet:
pe.Graphics.DrawLine(new Pen(Color.Violet, m_NeedleWidth), Center.X, Center.Y, endPoint.X, endPoint.Y);
pe.Graphics.DrawLine(new Pen(Color.Violet, m_NeedleWidth), Center.X, Center.Y, startPoint.X, startPoint.Y);
break;
case NeedleColorEnum.Yellow:
pe.Graphics.DrawLine(new Pen(Color.Yellow, m_NeedleWidth), Center.X, Center.Y, endPoint.X, endPoint.Y);
pe.Graphics.DrawLine(new Pen(Color.Yellow, m_NeedleWidth), Center.X, Center.Y, startPoint.X, startPoint.Y);
break;
}
break;
}
}

protected override void OnResize(EventArgs e)
{
drawGaugeBackground = true;
Refresh();
}
#endregion

#region helper method added to get color from range for a given value

/// <summary>
/// return the range color for a given value
/// </summary>
/// <param name="val">value to check</param>
/// <returns>color associated with range for value, or White if no range applies</returns>
public System.Drawing.Color ValueColor(float val)
{
for (Int32 counter = 0; counter < NUMOFRANGES; counter++)
{
if ((m_RangeStartValue[counter] <= val)
&& (val <= m_RangeEndValue[counter])
&& (m_RangeEnabled[counter]))
{
return m_RangeColor[counter];
}
}
return System.Drawing.Color.White; //default if out of range
}

#endregion

}
}



        /// <summary>
        /// 更新仪表盘
        /// </summary>
        /// <param name="gauge"></param>
        /// <param name="val"></param>
        private void updateGaugeWidget
            (
                SlowX.DevExPressAGauge.Controls.AGauge gauge,
                long val
            )
        {
             

            if (val <= 50)
            {
                gauge.Value = val;
                gauge.NeedleColor1
                    =
                    SlowX.DevExPressAGauge.Controls.AGauge.NeedleColorEnum.Gray;

            }
            else
            {
                gauge.Value = val;
                gauge.NeedleColor1
                    =
                    SlowX.DevExPressAGauge.Controls.AGauge.NeedleColorEnum.Blue;
            }

        }

         
        private void toolStripButton_50_Click(object sender, EventArgs e)
        {
            try
            {
                updateGaugeWidget(aGauge1, 50);
            }
            catch (Exception err)
            {
                MessageBox.Show(err.Message);
            }
        }

        private void toolStripButton_150_Click(object sender, EventArgs e)
        {
            try
            {
                updateGaugeWidget(aGauge1, 150);
            }
            catch (Exception err)
            {
                MessageBox.Show(err.Message);
            }
        }