private bool cached = false; // at least 1 axis has been cached
/// <summary>
/// Cache the current axes
/// </summary>
public void CacheAxes()
{
if (!cached)
{
if (XAxis1 != null)
{
xAxis1Cache = (Axis)XAxis1.Clone();
cached = true;
}
if (XAxis2 != null)
{
xAxis2Cache = (Axis)XAxis2.Clone();
cached = true;
}
if (YAxis1 != null)
{
yAxis1Cache = (Axis)YAxis1.Clone();
cached = true;
}
if (YAxis2 != null)
{
yAxis2Cache = (Axis)YAxis2.Clone();
cached = true;
}
}
}
void DetermineAxesToDraw(out Axis xAxis_1, out Axis xAxis_2, out Axis yAxis_1, out Axis yAxis_2)
{
xAxis_1 = XAxis1;
xAxis_2 = XAxis2;
yAxis_1 = YAxis1;
yAxis_2 = YAxis2;
if (XAxis1 == null)
{
if (XAxis2 == null)
{
throw new XwPlotException("Error: No X-Axis specified");
}
xAxis_1 = (Axis)XAxis2.Clone();
xAxis_1.HideTickText = true;
xAxis_1.TicksAngle = -Math.PI / 2;
}
if (XAxis2 == null)
{
// don't need to check if XAxis1 == null, as case already handled above.
xAxis_2 = (Axis)XAxis1.Clone();
xAxis_2.HideTickText = true;
xAxis_2.TicksAngle = Math.PI / 2.0;
}
if (YAxis1 == null)
{
if (YAxis2 == null)
{
throw new XwPlotException("Error: No Y-Axis specified");
}
yAxis_1 = (Axis)YAxis2.Clone();
yAxis_1.HideTickText = true;
yAxis_1.TicksAngle = Math.PI / 2.0;
}
if (YAxis2 == null)
{
// don't need to check if YAxis1 == null, as case already handled above.
yAxis_2 = (Axis)YAxis1.Clone();
yAxis_2.HideTickText = true;
yAxis_2.TicksAngle = -Math.PI / 2.0;
}
}
protected override void OnMouseUp(MouseEventArgs e)
{
if (e.Button == MouseButtons.Left && allowSelection_)
{
endPoint_.X = e.X;
endPoint_.Y = e.Y;
// terminate mouse action
mouseActionInitiated_ = false;
if (endPoint_ != unset_)
{
DrawRubberBand(startPoint_, endPoint_);
}
Point minPoint = new Point(0, 0);
minPoint.X = Math.Min(startPoint_.X, endPoint_.X);
minPoint.Y = Math.Min(startPoint_.Y, endPoint_.Y);
Point maxPoint = new Point(0, 0);
maxPoint.X = Math.Max(startPoint_.X, endPoint_.X);
maxPoint.Y = Math.Max(startPoint_.Y, endPoint_.Y);
Rectangle r = ps_.PlotAreaBoundingBoxCache;
if (minPoint != maxPoint && (r.Contains(minPoint) || r.Contains(maxPoint)))
{
if (xAxis1Cache_ == null)
{
xAxis1Cache_ = (Axis)XAxis1.Clone();
xAxis2Cache_ = (Axis)XAxis2.Clone();
yAxis1Cache_ = (Axis)YAxis1.Clone();
yAxis2Cache_ = (Axis)YAxis2.Clone();
}
// TODO: these bugger up if min/max point reversed.
// think this implies can't have axes directed wrong way.
// check out later.
// middle wheel will be controlling zoom in future. left mouse may
// be drag => stack zoom out not long term solution, so just make
// zoom out go right out at this stage.
if (XAxis1 != null)
{
double tempMin =
PhysicalXAxis1Cache.PhysicalToWorld(minPoint, true);
XAxis1.WorldMax =
PhysicalXAxis1Cache.PhysicalToWorld(maxPoint, true);
XAxis1.WorldMin = tempMin;
}
if (XAxis2 != null)
{
double tempMin =
PhysicalXAxis2Cache.PhysicalToWorld(minPoint, true);
XAxis2.WorldMax =
PhysicalXAxis2Cache.PhysicalToWorld(maxPoint, true);
XAxis2.WorldMin = tempMin;
}
if (YAxis1 != null)
{
double tempMin =
PhysicalYAxis1Cache.PhysicalToWorld(maxPoint, true);
YAxis1.WorldMax =
PhysicalYAxis1Cache.PhysicalToWorld(minPoint, true);
YAxis1.WorldMin = tempMin;
}
if (YAxis2 != null)
{
double tempMin =
PhysicalYAxis2Cache.PhysicalToWorld(maxPoint, true);
YAxis2.WorldMax =
PhysicalYAxis2Cache.PhysicalToWorld(minPoint, true);
YAxis2.WorldMin = tempMin;
}
// reset the start/end points
startPoint_ = unset_;
endPoint_ = unset_;
Refresh();
}
}
else if (e.Button == MouseButtons.Right)
{
if (xAxis1Cache_ != null)
{
XAxis1 = xAxis1Cache_;
XAxis2 = xAxis2Cache_;
YAxis1 = yAxis1Cache_;
YAxis2 = yAxis2Cache_;
xAxis1Cache_ = null;
xAxis2Cache_ = null;
yAxis1Cache_ = null;
yAxis2Cache_ = null;
}
Refresh();
}
// don't fail to call the base method!
base.OnMouseUp(e);
}