Package org.jfree.chart.plot
Class CategoryCrosshairState
- java.lang.Object
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- org.jfree.chart.plot.CrosshairState
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- org.jfree.chart.plot.CategoryCrosshairState
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public class CategoryCrosshairState extends CrosshairState
Represents state information for the crosshairs in aCategoryPlot
. An instance of this class is created at the start of the rendering process, and updated as each data item is rendered. At the end of the rendering process, this class holds the row key, column key and value for the crosshair location.
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Constructor Summary
Constructors Constructor Description CategoryCrosshairState()
Creates a new instance.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description java.lang.Comparable
getColumnKey()
Returns the column key.java.lang.Comparable
getRowKey()
Returns the row key.void
setColumnKey(java.lang.Comparable key)
Sets the column key.void
setRowKey(java.lang.Comparable key)
Sets the row key.void
updateCrosshairPoint(java.lang.Comparable rowKey, java.lang.Comparable columnKey, double value, int datasetIndex, double transX, double transY, PlotOrientation orientation)
Evaluates a data point from aCategoryItemRenderer
and if it is the closest to the anchor point it becomes the new crosshair point.void
updateCrosshairX(java.lang.Comparable rowKey, java.lang.Comparable columnKey, int datasetIndex, double transX, PlotOrientation orientation)
Updates only the crosshair row and column keys (this is for the case where the range crosshair does NOT lock onto the nearest data value).-
Methods inherited from class org.jfree.chart.plot.CrosshairState
getAnchor, getAnchorX, getAnchorY, getCrosshairDistance, getCrosshairX, getCrosshairY, getDatasetIndex, setAnchor, setAnchorX, setAnchorY, setCrosshairDistance, setCrosshairX, setCrosshairY, setDatasetIndex, updateCrosshairPoint, updateCrosshairX, updateCrosshairY
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Method Detail
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getRowKey
public java.lang.Comparable getRowKey()
Returns the row key.- Returns:
- The row key.
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setRowKey
public void setRowKey(java.lang.Comparable key)
Sets the row key.- Parameters:
key
- the row key.
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getColumnKey
public java.lang.Comparable getColumnKey()
Returns the column key.- Returns:
- The column key.
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setColumnKey
public void setColumnKey(java.lang.Comparable key)
Sets the column key.- Parameters:
key
- the key.
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updateCrosshairPoint
public void updateCrosshairPoint(java.lang.Comparable rowKey, java.lang.Comparable columnKey, double value, int datasetIndex, double transX, double transY, PlotOrientation orientation)
Evaluates a data point from aCategoryItemRenderer
and if it is the closest to the anchor point it becomes the new crosshair point.- Parameters:
rowKey
- the row key.columnKey
- the column key.value
- y coordinate (measured against the range axis).datasetIndex
- the dataset index for this point.transX
- x translated into Java2D space.transY
- y translated into Java2D space.orientation
- the plot orientation.
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updateCrosshairX
public void updateCrosshairX(java.lang.Comparable rowKey, java.lang.Comparable columnKey, int datasetIndex, double transX, PlotOrientation orientation)
Updates only the crosshair row and column keys (this is for the case where the range crosshair does NOT lock onto the nearest data value).- Parameters:
rowKey
- the row key.columnKey
- the column key.datasetIndex
- the dataset axis index.transX
- the translated x-value.orientation
- the plot orientation.
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