/// <summary>
/// Returns the color for a 3scale color formatting.
/// </summary>
/// <param name="value">The value.</param>
/// <param name="min">The minimum.</param>
/// <param name="max">The maximum.</param>
/// <param name="par">The 3color parameters.</param>
/// <returns></returns>
public static Color ConvertThreeRange(double value, double min, double max, ThreeColoursParams par)
{
HSVColour A = ColourToHSV(par.MinimumColour);
HSVColour B = ColourToHSV(par.MaximumColour);
HSVColour C = ColourToHSV(par.MediumColour);
//Ratio
double percent;
if (min == max)
{
percent = 1.0;
}
else
{
//Min can be different from 0
percent = (value - min) / (max - min);
}
if (percent == 0.5)
{
return(par.MediumColour);
}
else if (percent <= 0.5)
{
return(Color.FromArgb((int)Math.Round(par.MinimumColour.A + (par.MediumColour.A - par.MinimumColour.A) * percent), (int)Math.Round(par.MinimumColour.R + (par.MediumColour.R - par.MinimumColour.R) * percent), (int)Math.Round(par.MinimumColour.G + (par.MediumColour.G - par.MinimumColour.G) * percent), (int)Math.Round(par.MinimumColour.B + (par.MediumColour.B - par.MinimumColour.B) * percent)));
}
else
{
return(Color.FromArgb((int)Math.Round(par.MediumColour.A + (par.MaximumColour.A - par.MediumColour.A) * percent), (int)Math.Round(par.MediumColour.R + (par.MaximumColour.R - par.MediumColour.R) * percent), (int)Math.Round(par.MediumColour.G + (par.MaximumColour.G - par.MediumColour.G) * percent), (int)Math.Round(par.MediumColour.B + (par.MaximumColour.B - par.MediumColour.B) * percent)));
}
}
/// <summary>
/// Paints the specified graphics.
/// </summary>
/// <param name="graphics">The graphics.</param>
/// <param name="clipBounds">The clip bounds.</param>
/// <param name="cellBounds">The cell bounds.</param>
/// <param name="rowIndex">Index of the row.</param>
/// <param name="cellState">State of the cell.</param>
/// <param name="value">The value.</param>
/// <param name="formattedValue">The formatted value.</param>
/// <param name="errorText">The error text.</param>
/// <param name="cellStyle">The cell style.</param>
/// <param name="advancedBorderStyle">The advanced border style.</param>
/// <param name="paintParts">The paint parts.</param>
protected override void Paint(System.Drawing.Graphics graphics, System.Drawing.Rectangle clipBounds, System.Drawing.Rectangle cellBounds, int rowIndex, System.Windows.Forms.DataGridViewElementStates cellState, object value, object formattedValue, string errorText, System.Windows.Forms.DataGridViewCellStyle cellStyle, System.Windows.Forms.DataGridViewAdvancedBorderStyle advancedBorderStyle,
System.Windows.Forms.DataGridViewPaintParts paintParts)
{
if (FormatParams != null) // null can happen when cell set to Formatting but no condition has been set !
{
switch (FormatType)
{
case EnumConditionalFormatType.BAR:
int barWidth;
BarParams par = (BarParams)FormatParams;
barWidth = (int)((cellBounds.Width - 10) * par.ProportionValue);
Style.BackColor = this.DataGridView.DefaultCellStyle.BackColor;
Style.ForeColor = this.DataGridView.DefaultCellStyle.ForeColor;
if (barWidth > 0) //(double)value > 0 &&
{
Rectangle r = new Rectangle(cellBounds.X + 3, cellBounds.Y + 3, barWidth, cellBounds.Height - 8);
if (par.GradientFill)
{
using (LinearGradientBrush linearBrush = new LinearGradientBrush(r, par.BarColour, Color.White, LinearGradientMode.Horizontal)) //Color.FromArgb(255, 247, 251, 242)
{
graphics.FillRectangle(linearBrush, r);
}
}
else
{
using (SolidBrush solidBrush = new SolidBrush(par.BarColour)) //Color.FromArgb(255, 247, 251, 242)
{
graphics.FillRectangle(solidBrush, r);
}
}
using (Pen pen = new Pen(par.BarColour)) //Color.FromArgb(255, 140, 197, 66)))
{
graphics.DrawRectangle(pen, r);
}
}
break;
case EnumConditionalFormatType.TWOCOLOURSRANGE:
TwoColoursParams TWCpar = (TwoColoursParams)FormatParams;
Style.BackColor = TWCpar.ValueColour;
// if (ContrastTextColor)
Style.ForeColor = ContrastColour(TWCpar.ValueColour);
break;
case EnumConditionalFormatType.THREECOLOURSRANGE:
ThreeColoursParams THCpar = (ThreeColoursParams)FormatParams;
Style.BackColor = THCpar.ValueColour;
Style.ForeColor = ContrastColour(THCpar.ValueColour);
break;
default:
Style.BackColor = this.DataGridView.DefaultCellStyle.BackColor;
Style.ForeColor = this.DataGridView.DefaultCellStyle.ForeColor;
break;
}
}
else
{
Style.BackColor = this.DataGridView.DefaultCellStyle.BackColor;
Style.ForeColor = this.DataGridView.DefaultCellStyle.ForeColor;
}
base.Paint(graphics, clipBounds, cellBounds, rowIndex, cellState, value, formattedValue, errorText, cellStyle, advancedBorderStyle,
DataGridViewPaintParts.None | DataGridViewPaintParts.ContentForeground);
}
