lt.monarch.chart.chart2D.axis.layouters
Class SimpleLinearLabelLayouter

java.lang.Object
  lt.monarch.chart.chart2D.axis.layouters.SimpleLinearLabelLayouter

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, LinearLabelLayouter

Direct Known Subclasses:

DefaultLinearLabelLayouter

public class SimpleLinearLabelLayouter
extends java.lang.Object
implements LinearLabelLayouter, java.io.Serializable

Eliminates labels, falling outside the visible axis range. Does not handle overlapping labels in any way.

See Also:

Serialized Form

Field Summary

Modifier and Type	Field and Description
protected boolean	calculatePreferredDimensions Shows cleanup preferred dimmensions
protected int	levels number of label levels
protected double	prefferedHeight Preferred height of the labels
protected double	prefferedWidth Preferred width of the labels
protected boolean	sparseMode specifies whether sparse mode is set to this layouter
protected double	start start of the visible range
protected double	stop end of the visible range
protected Area	titleArea Axis titles

Constructor and Description

SimpleLinearLabelLayouter()
Constructs a new SimpleLinearLabelLayouter.

Method Summary

Modifier and Type	Method and Description
java.lang.Object	clone() Returns a copy of the layouter.
protected int	compareLabels(AbstractAxisLabel l1, AbstractAxisLabel l2) Compares positions of the specified labels.
void	dispose() Disposes layouter
protected void	eliminateOutbound(AbstractAxisLabel[] labels) Eliminates labels, falling outside the visible axis range.
protected int	findMaxLevel(AbstractAxisLabel[] labels) Finds the maximum level of labels in the specified array.
int	getMaxLevel() Returns the maximum level of layouted labels.
double	getPreferredHeight() Non-API method. Returns height required to layout labels.
double	getPreferredWidth() Non-API method. Returns width required to layout labels.
void	layout(AbstractAxisLabel[] labels) Layouts specified labels.
void	prepare(AbstractAxisLabel[] labels) Non-API method. Calculates preferred size of all visible labels (maximum size of all labels).
void	setSparseMode(boolean sparseMode) Enables sparse mode (true - enabled, false - disabled).
void	setTitleArea(Area title) Adds title area
void	setVisibleRange(double start, double stop) Sets the visible range for the layouter.
protected void	sort(AbstractAxisLabel[] labels) Sorts the labels

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

start

protected double start

start of the visible range

stop

protected double stop

end of the visible range

levels

protected int levels

number of label levels

titleArea

protected Area titleArea

Axis titles

sparseMode

protected boolean sparseMode

specifies whether sparse mode is set to this layouter

prefferedHeight

protected double prefferedHeight

Preferred height of the labels

prefferedWidth

protected double prefferedWidth

Preferred width of the labels

calculatePreferredDimensions

protected boolean calculatePreferredDimensions

Shows cleanup preferred dimmensions

Constructor Detail

SimpleLinearLabelLayouter

public SimpleLinearLabelLayouter()

Constructs a new SimpleLinearLabelLayouter. The value of levels is set to Integer.MAX_VALUE.

Method Detail

setTitleArea

public void setTitleArea(Area title)

Adds title area

Specified by:

setTitleArea in interface LinearLabelLayouter

Parameters:

title - title area

clone

public java.lang.Object clone()

Returns a copy of the layouter.

Specified by:

clone in interface LinearLabelLayouter

Overrides:

clone in class java.lang.Object

Returns:

copy of the layouter

setVisibleRange

public void setVisibleRange(double start,
                            double stop)

Sets the visible range for the layouter. All labels falling outside the range will be eliminated.

Specified by:

setVisibleRange in interface LinearLabelLayouter

Parameters:

start - the start of the range

stop - the end of the range

setSparseMode

public void setSparseMode(boolean sparseMode)

Enables sparse mode (true - enabled, false - disabled).

Specified by:

setSparseMode in interface LinearLabelLayouter

Parameters:

sparseMode - enable sparse mode permit

getMaxLevel

public int getMaxLevel()

Returns the maximum level of layouted labels.

Specified by:

getMaxLevel in interface LinearLabelLayouter

Returns:

maximum level of layouted labels

findMaxLevel

protected int findMaxLevel(AbstractAxisLabel[] labels)

Finds the maximum level of labels in the specified array.

Parameters:

labels - the labels array

Returns:

the maximum level of specified labels

layout

public void layout(AbstractAxisLabel[] labels)

Layouts specified labels. Eliminates labels, falling outside the visible axis range. Eliminated labels are set to null.

Specified by:

layout in interface LinearLabelLayouter

Parameters:

labels - labels to layout

eliminateOutbound

protected void eliminateOutbound(AbstractAxisLabel[] labels)

Eliminates labels, falling outside the visible axis range.

Parameters:

labels - labels to layout

sort

protected void sort(AbstractAxisLabel[] labels)

Sorts the labels

Parameters:

labels - AxisLabel array

compareLabels

protected int compareLabels(AbstractAxisLabel l1,
                            AbstractAxisLabel l2)

Compares positions of the specified labels.

Parameters:

l1 - the first label to compare

l2 - the second label to compare

Returns:

negative integer if position of l1 is less than position of l2; 0 if positions of these labels are equal; positive integer if position position of l1 is greater than position of l2.

dispose

public void dispose()

Description copied from interface: LinearLabelLayouter

Disposes layouter

Specified by:

dispose in interface LinearLabelLayouter

prepare

public void prepare(AbstractAxisLabel[] labels)

Description copied from interface: LinearLabelLayouter

Non-API method. Calculates preferred size of all visible labels (maximum size of all labels).

Specified by:

prepare in interface LinearLabelLayouter

Parameters:

labels - label array

getPreferredHeight

public double getPreferredHeight()

Description copied from interface: LinearLabelLayouter

Non-API method. Returns height required to layout labels. Value is valid after the prepare(AbstractAxisLabel[] labels) or layout(AbstractAxisLabel[] labels) method is already called.

Specified by:

getPreferredHeight in interface LinearLabelLayouter

Returns:

height of layout

getPreferredWidth

public double getPreferredWidth()

Description copied from interface: LinearLabelLayouter

Non-API method. Returns width required to layout labels. Value is valid after the prepare(AbstractAxisLabel[] labels) or layout(AbstractAxisLabel[] labels) method is already called.

Specified by:

getPreferredWidth in interface LinearLabelLayouter

Returns:

height of layout