/// <summary>
/// Create a RoundGauge object
/// </summary>
public RoundGauge()
{
// set defaults
updating = true;
BackColor = Color.Cornsilk;
ValueArc = 300;
currentValue = 0;
valueFont = new Font(FontFamily.GenericMonospace, valueFontSize, FontStyle.Regular);
face = new Rectangle(bezelWidth, bezelWidth, diameter - (2 * bezelWidth), diameter - (2 * bezelWidth));
bufferBitmap = new Bitmap(diameter, diameter);
needle = new Needle(this.Width, valueAngle, (Width / 2 - bezelWidth - lineBezelSpacing));
needle.Width = needleWidth;
needle.NeedleColor = needleColor;
#if DESIGN
lamps.LampsChanged += new ChangeHandler(lamps_LampChanged);
#endif
UpdateNeedleLength();
unitsPerDegree = (double)ValueArc / (double)(maxValue - minValue);
updating = false;
this.Refresh();
}
/// <summary>
/// Fired when the RoundGauge is resized
/// </summary>
/// <param name="e"></param>
protected override void OnResize(EventArgs e)
{
diameter = Width = Height;
face = new Rectangle(bezelWidth, bezelWidth, diameter - (2 * bezelWidth), diameter - (2 * bezelWidth));
bufferBitmap = new Bitmap(diameter, diameter);
DetermineValueRect(ref valueRect, ref valueBorder);
needle = new Needle(this.Width, valueAngle, (Width / 2 - bezelWidth - lineBezelSpacing));
needle.Width = needleWidth;
// update lamp data
int lampx = 0, lampy = 0;
lampdiameter = (int)((this.Width / 2) - ((this.Width / 2) / 1.4142135623730950488016887242097));
foreach (Lamp l in lamps)
{
switch (l.Position)
{
case LampPosition.UpperLeft:
lampx = lampdiameter + 1;
lampy = lampdiameter + 1;
break;
case LampPosition.UpperRight:
lampx = this.Width - 1;
lampy = lampdiameter + 1;
break;
case LampPosition.LowerLeft:
lampx = lampdiameter + 1;
lampy = this.Height - 1;
break;
case LampPosition.LowerRight:
lampx = this.Width - 1;
lampy = this.Height - 1;
break;
}
l.UpperRight = new Point(lampx, lampy);
l.Diameter = lampdiameter;
}
base.OnResize(e);
if (!updating)
{
this.Refresh();
}
}
private void RecalculateFace()
{
diameter = Width = Height;
face = new Rectangle(bezelWidth, bezelWidth, diameter - (2 * bezelWidth), diameter - (2 * bezelWidth));
bufferBitmap = new Bitmap(diameter, diameter);
DetermineValueRect(out valueRect, out valueBorder);
needle = new Needle(this.Width, valueAngle, (Width / 2 - bezelWidth - lineBezelSpacing));
needle.Width = needleWidth;
// update lamp data
int lampx = 0, lampy = 0;
lampdiameter = (int)((this.Width / 2) - ((this.Width / 2) / 1.4142135623730950488016887242097));
foreach (Lamp l in lamps)
{
switch (l.Position)
{
case LampPosition.UpperLeft:
lampx = lampdiameter + 1;
lampy = lampdiameter + 1;
break;
case LampPosition.UpperRight:
lampx = this.Width - 1;
lampy = lampdiameter + 1;
break;
case LampPosition.LowerLeft:
lampx = lampdiameter + 1;
lampy = this.Height - 1;
break;
case LampPosition.LowerRight:
lampx = this.Width - 1;
lampy = this.Height - 1;
break;
}
l.UpperRight = new Point(lampx, lampy);
l.Diameter = lampdiameter;
}
}