/// <summary>
/// When the mouse wheel event occurs, this forwards the event to this control.
/// </summary>
/// <param name="delta">The delta.</param>
/// <param name="x">The x.</param>
public void DoMouseWheel(int delta, float x)
{
double val = _graph.GetValue(x);
if (delta > 0)
{
_graph.Minimum += ((val - _graph.Minimum) / 2);
_graph.Maximum -= ((_graph.Maximum - val) / 2);
}
else
{
_graph.Minimum -= (val - _graph.Minimum);
_graph.Maximum += (_graph.Maximum - val);
}
if (_isRaster)
{
if (_graph.Minimum < _rasterSymbolizer.Scheme.Statistics.Minimum)
{
_graph.Minimum = _rasterSymbolizer.Scheme.Statistics.Minimum;
}
if (_graph.Maximum > _rasterSymbolizer.Scheme.Statistics.Maximum)
{
_graph.Maximum = _rasterSymbolizer.Scheme.Statistics.Maximum;
}
}
else
{
if (_graph.Minimum < _scheme.Statistics.Minimum)
{
_graph.Minimum = _scheme.Statistics.Minimum;
}
if (_graph.Maximum > _scheme.Statistics.Maximum)
{
_graph.Maximum = _scheme.Statistics.Maximum;
}
}
FillBins();
UpdateBreaks();
Invalidate();
}
