/// <summary>
/// Reset data serial to row default styles.
/// </summary>
protected virtual void ResetDataSerialStyles()
{
var ds = this.dataSource;
if (ds == null)
{
return;
}
int dataSerialCount = this.dataSource.SerialCount;
if (this.dataSource == null || dataSerialCount <= 0)
{
this.serialStyles.Clear();
}
while (this.serialStyles.Count < dataSerialCount)
{
this.serialStyles.Add(new DataSerialStyle(this)
{
FillColor = ChartUtility.GetDefaultDataSerialFillColor(this.serialStyles.Count),
LineColor = ChartUtility.GetDefaultDataSerialFillColor(this.serialStyles.Count),
LineWidth = 2f,
});
}
}
/// <summary>
/// Reset data serial to row default styles.
/// </summary>
protected virtual void ResetDataSerialStyles()
{
if (DataSource == null)
{
return;
}
// Allocate styles in such way that derived classes can opt to use them for categories instead
int dataSerialCount = Math.Max(DataSource.SerialCount, DataSource.CategoryCount);
if (dataSerialCount <= 0)
{
serialStyles.Clear();
}
while (serialStyles.Count < dataSerialCount)
{
serialStyles.Add(new DataSerialStyle(this)
{
FillColor = ChartUtility.GetDefaultDataSerialFillColor(serialStyles.Count),
LineColor = ChartUtility.GetDefaultDataSerialFillColor(serialStyles.Count),
LineWidth = 2f,
});
}
}
/// <summary>
/// Update specified axis information.
/// </summary>
/// <param name="ai">Axis information set.</param>
/// <param name="minData">Minimum value scanned from data range.</param>
/// <param name="maxData">Maximum value scanned from data range.</param>
protected virtual void UpdateAxisInfo(AxisDataInfo ai, double minData, double maxData)
{
var clientRect = this.PlotViewContainer;
double range = maxData - minData;
ai.Levels = (int)Math.Ceiling(clientRect.Height / 30f);
// when clientRect is zero, nothing to do
if (double.IsNaN(ai.Levels))
{
return;
}
if (minData == maxData)
{
if (maxData == 0)
{
maxData = ai.Levels;
}
else
{
minData = 0;
}
}
int scaler;
double stride = ChartUtility.CalcLevelStride(minData, maxData, ai.Levels, out scaler);
ai.Scaler = scaler;
double m;
if (!ai.AutoMinimum)
{
if (this.AxisOriginToZero(minData, maxData, range))
{
ai.Minimum = 0;
}
else
{
m = minData % stride;
if (m == 0)
{
if (minData == 0)
{
ai.Minimum = minData;
}
else
{
ai.Minimum = minData - stride;
}
}
else
{
if (minData < 0)
{
ai.Minimum = minData - stride - m;
}
else
{
ai.Minimum = minData - m;
}
}
}
}
if (!ai.AutoMaximum)
{
m = maxData % stride;
if (m == 0)
{
ai.Maximum = maxData + stride;
}
else
{
ai.Maximum = maxData - m + stride;
}
}
ai.Levels = (int)Math.Round((ai.Maximum - ai.Minimum) / stride);
ai.LargeStride = stride;
}
/// <summary>
/// Update specified axis information.
/// </summary>
/// <param name="ai">Axis information set.</param>
/// <param name="minData">Minimum value scanned from data range.</param>
/// <param name="maxData">Maximum value scanned from data range.</param>
protected virtual void UpdateAxisInfo(AxisDataInfo ai, double minData, double maxData)
{
var clientRect = this.PlotViewContainer;
double range = maxData - minData;
var isTransposed = HorizontalAxisInfoView.Orientation == AxisOrientation.Vertical;
ai.Levels = (int)Math.Ceiling((isTransposed ? clientRect.Width : clientRect.Height) / 30f);
// when clientRect is zero, nothing to do
if (double.IsNaN(ai.Levels))
{
return;
}
if (minData == maxData)
{
if (maxData == 0)
{
maxData = ai.Levels;
}
else
{
minData = 0;
}
}
int scaler;
double stride = ChartUtility.CalcLevelStride(minData, maxData, ai.Levels, out scaler);
double nearzero = stride / 1E9;
ai.Scaler = scaler;
double m;
if (!ai.AutoMinimum)
{
if (this.AxisOriginToZero(minData, maxData, range))
{
ai.Minimum = 0;
}
else
{
m = minData % stride;
if (Math.Abs(m) < nearzero)
{
ai.Minimum = minData;
}
else
{
if (minData < 0)
{
ai.Minimum = minData - stride - m;
}
else
{
ai.Minimum = minData - m;
}
}
}
}
if (!ai.AutoMaximum)
{
m = maxData % stride;
if (Math.Abs(m) < nearzero)
{
ai.Maximum = maxData;
}
else
{
ai.Maximum = maxData - m + stride;
}
}
ai.Levels = (int)Math.Round((ai.Maximum - ai.Minimum) / stride);
ai.LargeStride = stride;
}