public override void OnMouseDown(ChartControl chartControl, ChartPanel chartPanel, ChartScale chartScale, ChartAnchor dataPoint)
{
switch (DrawingState)
{
case DrawingState.Building:
if (StartAnchor.IsEditing)
{
dataPoint.CopyDataValues(StartAnchor);
dataPoint.CopyDataValues(EndAnchor);
StartAnchor.IsEditing = false;
}
else if (EndAnchor.IsEditing)
{
dataPoint.CopyDataValues(EndAnchor);
EndAnchor.IsEditing = false;
DrawingState = DrawingState.Normal;
IsSelected = false;
}
break;
case DrawingState.Normal:
Point p = dataPoint.GetPoint(chartControl, chartPanel, chartScale);
Cursor c = GetCursor(chartControl, chartPanel, chartScale, p);
if (c == Cursors.SizeWE)
{
int editingAnchor = GetClosestBarAnchor(chartControl, p, false);
int i = anchorBars.IndexOf(editingAnchor);
if (editingAnchor != int.MinValue && i > -1)
{
StartAnchor.UpdateXFromPoint(new Point(anchorBars[i == 0 ? i : i - 1], chartPanel.Y + chartPanel.H), chartControl, chartScale);
EndAnchor.UpdateXFromPoint(new Point(anchorBars[i == 0 ? i + 1 : i], chartPanel.Y + chartPanel.H), chartControl, chartScale);
EndAnchor.IsEditing = true;
DrawingState = DrawingState.Editing;
}
}
else if (c == Cursors.SizeAll)
{
int editingAnchor = GetClosestBarAnchor(chartControl, p, true);
int i = anchorBars.IndexOf(editingAnchor);
if (editingAnchor != int.MinValue && i > -1)
{
StartAnchor.UpdateXFromPoint(new Point(anchorBars[i - 1], chartPanel.Y + chartPanel.H), chartControl, chartScale);
EndAnchor.UpdateXFromPoint(new Point(anchorBars[i], chartPanel.Y + chartPanel.H), chartControl, chartScale);
// We have to update the InitialMouseDownAnchor here because we moved our Start/End anchors
InitialMouseDownAnchor = dataPoint.Clone() as ChartAnchor;
DrawingState = DrawingState.Moving;
}
}
else
{
IsSelected = false;
}
break;
}
}