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(AGauge) WinForms Gauge Control

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29 Aug 2012Zlib1 min read 158.3K   34   49
(AGauge) WinForms Gauge control

Introduction

Image 1

Original AGauge control

AGauge is a gauge control for WinForms create by A.J.Bauer using GDI+. The original code was published in "Code Project - A fast and performing gauge" The version that I published here is an improved version of AGauge which contains the following changes.

Improvements

Dynamic Gauge Label and Gauge Range

Properties for gauge label (previously known as CapText) and range are grouped into GaugeRanges and GaugeLabels which allow us to create any number of range and label as we wish. Range and label can be edited either from code or using the collection editor from the properties window.

C#
[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("Gauge Ranges.")]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
public AGaugeRangeCollection GaugeRanges { get { return _GaugeRanges; } }
private AGaugeRangeCollection _GaugeRanges;

[System.ComponentModel.Browsable(true),
System.ComponentModel.Category("AGauge"),
System.ComponentModel.Description("Gauge Labels.")]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
public AGaugeLabelCollection GaugeLabels { get { return _GaugeLabels; } }
private AGaugeLabelCollection _GaugeLabels;

Besides, each label can use different Font settings since label is an instance of AGaugeLabel.

Image 2

Added NeedleType Enumeration

AGauge control has 2 different types of needle design selectable from NeedleType property. Type of NeedleType property was changed from Int32 (0 or 1) to enumeration type (NeedleType.Advance or NeedleType.Simple) to avoid invalid entry from user.

Image 3

Events

Update ValueInRangeChangedEvent

ValueInRangeChangedDelegate was changed to ValueInRangeChangedEvent to allow multiple subscriptions. The event is changed to trigger only if value is entering or leaving a defined range. Besides, ValueInRangeChangedEventArgs was updated to hold current range and gauge value.

C#
[Description("This event is raised if the value is entering or leaving
  defined range.")]
public event EventHandler<ValueInRangeChangedEventArgs> ValueInRangeChanged;
private void OnValueInRangeChanged(AGaugeRange range, Single value)
{
  EventHandler<ValueInRangeChangedEventArgs> e = ValueInRangeChanged;
  if (e != null) e(this, new ValueInRangeChangedEventArgs(range, value,
                                                            range.InRange));
}

/// <summary>
/// Event argument for <see cref="ValueInRangeChanged"/> event.
/// </summary>
public class ValueInRangeChangedEventArgs : EventArgs
{
  /// <summary>
  /// Affected GaugeRange
  /// </summary>
  public AGaugeRange Range { get; private set; }
  /// <summary>
  /// Gauge Value
  /// </summary>
  public Single Value { get; private set; }
  /// <summary>
  /// True if value is within current range.
  /// </summary>
  public bool InRange { get; private set; }
  public ValueInRangeChangedEventArgs(AGaugeRange range, Single value,
                                          bool inRange)
  {
    this.Range = range;
    this.Value = value;
    this.InRange = inRange;
  }
}

Added ValueChangedEvent

ValueChanged event is added to notify user whenever gauge value is updated. Note that attempting to set gauge value out of defined gauge range will not trigger this event.

C#
[Description("This event is raised when gauge value changed.")]
public event EventHandler ValueChanged;
private void OnValueChanged()
{
  EventHandler e = ValueChanged;
  if (e != null) e(this, null);
}

License

This article, along with any associated source code and files, is licensed under The zlib/libpng License

History

  • 28/08/2012: Initial release (Version 2.0.0)

License

This article, along with any associated source code and files, is licensed under The zlib/libpng License


Written By
Technical Lead
Malaysia Malaysia
Official Page: www.codearteng.com

Comments and Discussions

 
Questionm_maxValue Pin
jhnlk20-Mar-14 4:12
jhnlk20-Mar-14 4:12 
QuestionaGauge Closed Pin
Member 992210316-Oct-13 12:10
Member 992210316-Oct-13 12:10 
AnswerRe: aGauge Closed Pin
Code Artist22-Oct-13 3:46
professionalCode Artist22-Oct-13 3:46 
GeneralRe: aGauge Closed Pin
Member 992210323-Oct-13 0:21
Member 992210323-Oct-13 0:21 
GeneralRe: aGauge Closed Pin
Code Artist23-Oct-13 1:59
professionalCode Artist23-Oct-13 1:59 
QuestionPicturebox collection and transparency Pin
N. Henrik Lauridsen7-Aug-13 20:07
N. Henrik Lauridsen7-Aug-13 20:07 
AnswerRe: Picturebox collection and transparency Pin
Code Artist22-Oct-13 3:55
professionalCode Artist22-Oct-13 3:55 
GeneralRe: Picturebox collection and transparency Pin
N. Henrik Lauridsen22-Oct-13 4:04
N. Henrik Lauridsen22-Oct-13 4:04 
Hi,
Thank you for your reply. I haven't found a solution to the picturebox Collection, but the transparency I have made a shaped picturebox around the gauge. I am using vb.net and not not good at C. I will try to contact A.J.Bauer
Thank's
QuestionChrash on BaseArcStart = 315 & ScaleLinesMajorStepValue = 25 Pin
N. Henrik Lauridsen23-Jul-13 0:44
N. Henrik Lauridsen23-Jul-13 0:44 
AnswerRe: Chrash on BaseArcStart = 315 & ScaleLinesMajorStepValue = 25 Pin
Code Artist23-Jul-13 5:08
professionalCode Artist23-Jul-13 5:08 
GeneralRe: Chrash on BaseArcStart = 315 & ScaleLinesMajorStepValue = 25 Pin
N. Henrik Lauridsen23-Jul-13 8:59
N. Henrik Lauridsen23-Jul-13 8:59 
GeneralRe: Chrash on BaseArcStart = 315 & ScaleLinesMajorStepValue = 25 Pin
Code Artist24-Jul-13 3:17
professionalCode Artist24-Jul-13 3:17 
GeneralRe: Chrash on BaseArcStart = 315 & ScaleLinesMajorStepValue = 25 Pin
N. Henrik Lauridsen24-Jul-13 6:00
N. Henrik Lauridsen24-Jul-13 6:00 
GeneralRe: Chrash on BaseArcStart = 315 & ScaleLinesMajorStepValue = 25 Pin
Code Artist25-Jul-13 11:52
professionalCode Artist25-Jul-13 11:52 
AnswerSolved Pin
N. Henrik Lauridsen25-Jul-13 22:53
N. Henrik Lauridsen25-Jul-13 22:53 
QuestionOutstanding Pin
tbrendza2-Jul-13 11:25
tbrendza2-Jul-13 11:25 
QuestionThanks Pin
TheoSun20-Jun-13 13:12
TheoSun20-Jun-13 13:12 
QuestionUpgrade from previous version Pin
N. Henrik Lauridsen17-Jun-13 4:12
N. Henrik Lauridsen17-Jun-13 4:12 
AnswerRe: Upgrade from previous version Pin
Code Artist17-Jun-13 12:10
professionalCode Artist17-Jun-13 12:10 
GeneralMy vote of 5 Pin
claudiotronic30-Apr-13 22:07
claudiotronic30-Apr-13 22:07 
GeneralRe: My vote of 5 Pin
Code Artist1-May-13 2:55
professionalCode Artist1-May-13 2:55 
GeneralImpressive Work Pin
Bangon Kali6-Mar-13 2:30
Bangon Kali6-Mar-13 2:30 
GeneralRe: Impressive Work Pin
Code Artist6-Mar-13 3:20
professionalCode Artist6-Mar-13 3:20 
GeneralMy vote of 5 Pin
Christian Amado29-Aug-12 10:58
professionalChristian Amado29-Aug-12 10:58 

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