Package org.openstreetmap.josm.gui.layer

Class NativeScaleLayer.ScaleList

java.lang.Object

org.openstreetmap.josm.gui.layer.NativeScaleLayer.ScaleList

Enclosing interface:

NativeScaleLayer

public static class NativeScaleLayer.ScaleList
extends java.lang.Object

List of scales, may include intermediate steps between native resolutions

Field Summary

Fields

Modifier and Type	Field	Description
private java.util.List<NativeScaleLayer.Scale>	scales

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ScaleList()
	ScaleList(java.util.Collection<java.lang.Double> scales)

Method Summary

Modifier and Type	Method	Description
protected void	addScale(NativeScaleLayer.Scale scale)
private NativeScaleLayer.Scale	getNextIn(NativeScaleLayer.Scale scale, double ratio)
private NativeScaleLayer.Scale	getNextOut(NativeScaleLayer.Scale scale, double ratio)
NativeScaleLayer.Scale	getSnapScale(double scale, boolean floor)	Get a scale from this ScaleList or a new scale if zoomed outside.
NativeScaleLayer.Scale	getSnapScale(double scale, double ratio, boolean floor)	Get a scale from this ScaleList or a new scale if zoomed outside.
NativeScaleLayer.Scale	scaleZoomIn(double scale, double ratio)	Get new scale for zoom in.
NativeScaleLayer.Scale	scaleZoomOut(double scale, double ratio)	Get new scale for zoom out.
NativeScaleLayer.Scale	scaleZoomTimes(double scale, double ratio, int times)	Get new scale for zoom in/out with a ratio at a number of times.
java.lang.String	toString()
NativeScaleLayer.ScaleList	withIntermediateSteps(double ratio)	Returns a ScaleList that has intermediate steps between native scales.

Methods inherited from class java.lang.Object

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

Field Detail

scales

private final java.util.List<NativeScaleLayer.Scale> scales

Constructor Detail

ScaleList

protected ScaleList()

ScaleList

public ScaleList(java.util.Collection<java.lang.Double> scales)

Method Detail

addScale

protected void addScale(NativeScaleLayer.Scale scale)

withIntermediateSteps

public NativeScaleLayer.ScaleList withIntermediateSteps(double ratio)

Returns a ScaleList that has intermediate steps between native scales. Native steps are split to equal steps near given ratio.

Parameters:

ratio - user defined zoom ratio

Returns:

a NativeScaleLayer.ScaleList with intermediate steps

getSnapScale

public NativeScaleLayer.Scale getSnapScale(double scale,
                                           boolean floor)

Get a scale from this ScaleList or a new scale if zoomed outside.

Parameters:

scale - previous scale

floor - use floor instead of round, set true when fitting view to objects

Returns:

new NativeScaleLayer.Scale

getSnapScale

public NativeScaleLayer.Scale getSnapScale(double scale,
                                           double ratio,
                                           boolean floor)

Get a scale from this ScaleList or a new scale if zoomed outside.

Parameters:

scale - previous scale

ratio - zoom ratio from starting from previous scale

floor - use floor instead of round, set true when fitting view to objects

Returns:

new NativeScaleLayer.Scale

scaleZoomTimes

public NativeScaleLayer.Scale scaleZoomTimes(double scale,
                                             double ratio,
                                             int times)

Get new scale for zoom in/out with a ratio at a number of times. Used by mousewheel zoom where wheel can step more than one between events.

Parameters:

scale - previous scale

ratio - user defined zoom ratio

times - number of times to zoom

Returns:

new NativeScaleLayer.Scale object from NativeScaleLayer.ScaleList or outside

scaleZoomIn

public NativeScaleLayer.Scale scaleZoomIn(double scale,
                                          double ratio)

Get new scale for zoom in.

Parameters:

scale - previous scale

ratio - user defined zoom ratio

Returns:

next scale in list or a new scale when zoomed outside

scaleZoomOut

public NativeScaleLayer.Scale scaleZoomOut(double scale,
                                           double ratio)

Get new scale for zoom out.

Parameters:

scale - previous scale

ratio - user defined zoom ratio

Returns:

next scale in list or a new scale when zoomed outside

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getNextIn

private NativeScaleLayer.Scale getNextIn(NativeScaleLayer.Scale scale,
                                         double ratio)

getNextOut

private NativeScaleLayer.Scale getNextOut(NativeScaleLayer.Scale scale,
                                          double ratio)