Unit
Description
TUndoZoomCoordinates class used to hold axes ranges for TPlot.UndoZoom operation. TPlot component maintains internal stack of TUndoZoomCoordinates objects and adds new object every time when user performs plot zooming with mouse. Note that ONLY mouse zooming is remembered, so that direct changes of TAxis.Min/Max cannot be "undone".
There's two different modes: this object may remember either coordinates of X/Y axes associated with current serie or coordinates of both axes pairs. In this case, X,YAxis references are NILs.
Fields