java.lang.Object
- org.pepstock.charba.client.commons.NativeObjectContainer
- - org.pepstock.charba.client.items.BaseBoxItem
  - - org.pepstock.charba.client.items.BaseBoxNodeItem<AxisPosition>
    - - org.pepstock.charba.client.items.ScaleItem

All Implemented Interfaces:

IsArea

Direct Known Subclasses:

AxisItem
```
public class ScaleItem
extends BaseBoxNodeItem<AxisPosition>
```
Wraps the scale item of CHART JS chart.
This is a wrapper of scale of Chart (of CHART.JS).

Author:

Andrea "Stock" Stocchero

Constructor Summary

Constructors
Constructor	Description
`ScaleItem(CallbacksEnvelop<NativeObject> envelop)`	Creates the item using an envelop (from `callbacks` package) of native java script object which contains all properties.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`AxisKind`	`getAxis()`	Which kind of axis this is. Possible values are: ''x', 'y' or 'r'.
`double`	`getBasePixel()`	Returns the pixel for the minimum chart value. The coordinate (0, 0) is at the upper-left corner of the canvas.
`double`	`getBaseValue()`	Returns the minimum chart value.
`int`	`getCharbaId()`	Returns the unique id of scale.
`IsChart`	`getChart()`	Returns the CHARBA chart instance.
`double`	`getDecimalForPixel(double pixel)`	Used to get the data value from a given pixel. This is the inverse of getPixelForValue. The coordinate (0, 0) is at the upper-left corner of the canvas.
`double`	`getDistanceFromCenterForValue(double value)`	Returns the distance from the center of a specific value.
`int`	`getDrawingArea()`	Returns the drawing area dimension of scale.
`double`	`getEnd()`	Returns the end value of scale.
`ScaleId`	`getId()`	Returns the id of scale
`String`	`getLabelForValue(double value)`	Used to get the label to display in the tooltip for the given value.
`double`	`getLabelRotation()`	Returns the label rotation ratio.
`double`	`getMax()`	Returns the max value of scale.
`Date`	`getMaxAsDate()`	Returns the max value of scale.
`String`	`getMaxAsString()`	Returns the max value of scale.
`double`	`getMin()`	Returns the minimum value of scale.
`Date`	`getMinAsDate()`	Returns the minimum value of scale.
`String`	`getMinAsString()`	Returns the minimum value of scale.
`double`	`getPixelForDateValue(Date value)`	Returns the location of the given data point. The coordinate (0, 0) is at the upper-left corner of the canvas.
`double`	`getPixelForDateValue(Date value, double index)`	Returns the location of the given data point. Value can either be an index or a numerical value. The coordinate (0, 0) is at the upper-left corner of the canvas.
`double`	`getPixelForDecimal(double decimal)`	Utility for getting the pixel location of a percentage of scale. The coordinate (0, 0) is at the upper-left corner of the canvas.
`double`	`getPixelForStringValue(String value)`	Returns the location of the given data point. The coordinate (0, 0) is at the upper-left corner of the canvas.
`double`	`getPixelForStringValue(String value, double index)`	Returns the location of the given data point. The coordinate (0, 0) is at the upper-left corner of the canvas.
`double`	`getPixelForTick(double index)`	Returns the location of the tick at the given index. The coordinate (0, 0) is at the upper-left corner of the canvas.
`double`	`getPixelForValue(double value)`	Returns the location of the given data point. The coordinate (0, 0) is at the upper-left corner of the canvas.
`double`	`getPixelForValue(double value, double index)`	Returns the location of the given data point. Value can either be an index or a numerical value. The coordinate (0, 0) is at the upper-left corner of the canvas.
`List<String>`	`getPointLabels()`	Returns the list of point labels of scale.
`double`	`getStart()`	Returns the start value of scale.
`List<ScaleTickItem>`	`getTicks()`	Returns the list of ticks.
`AxisType`	`getType()`	Returns the type of scale
`ScaleValueItem`	`getValueAtEvent(BaseNativeEvent event)`	Returns the value on the axis related to an event position.
`ScaleValueItem`	`getValueAtEvent(ChartEventContext context)`	Returns the value on the axis related to an event position.
`ScaleValueItem`	`getValueAtPixel(double position)`	Returns the value on the axis related to a position, passed as pixels.
`double`	`getValueForDistanceFromCenter(double distance)`	Returns the value calculated applying the specific distance from the center.
`double`	`getValueForPixel(double pixel)`	Used to get the data value from a given pixel. This is the inverse of getPixelForValue. The coordinate (0, 0) is at the upper-left corner of the canvas.
`int`	`getXCenter()`	Returns the X center of scale.
`int`	`getYCenter()`	Returns the Y center of scale.
`boolean`	`isHorizontal()`	Returns `true` if the scale is horizontal.

Methods inherited from class org.pepstock.charba.client.items.BaseBoxNodeItem
getMaxHeight, getMaxWidth, getPaddingBottom, getPaddingLeft, getPaddingRight, getPaddingTop, getPosition, getWeight, isActive, isFullSize

Methods inherited from class org.pepstock.charba.client.items.BaseBoxItem
getBottom, getHeight, getLeft, getRight, getTop, getWidth, isInside

Methods inherited from class org.pepstock.charba.client.commons.NativeObjectContainer
checkDefaultValuesArgument, empty, getArrayValue, getElement, getIncrementalId, getNativeChart, getNativeEvent, getNativeObject, getValue, getValue, getValue, getValue, getValue, getValue, getValue, getValue, getValue, getValue, getValue, getValue, getValue, getValueForMultipleKeyTypes, getValueForMultipleKeyTypes, getValueForMultipleKeyTypes, getValueOrArray, getValueOrArray, getValueOrArray, getValueOrArray, getValueOrArray, getValueOrArray, getValueOrArray, getValueOrArray, has, has, isType, keys, loadNativeObject, remove, remove, setArrayValue, setArrayValue, setArrayValue, setElement, setEmptyValue, setNewIncrementalId, setNewIncrementalId, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValue, setValueOrArray, setValueOrArray, setValueOrArray, setValueOrArray, setValueOrArray, setValueOrArray, setValueOrArray, setValueOrArray, setValueOrArray, setValueOrArray, toJSON, type

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ScaleItem
```
public ScaleItem(CallbacksEnvelop<NativeObject> envelop)
```
    Creates the item using an envelop (from callbacks package) of native java script object which contains all properties.
    
    Parameters:
    
    envelop - envelop of native java script object which contains all properties.
- Method Detail
  - getChart
```
public final IsChart getChart()
```
    Returns the CHARBA chart instance.
    
    Returns:
    
    the CHARBA chart instance
  - getId
```
public final ScaleId getId()
```
    Returns the id of scale
    
    Returns:
    
    the id of scale.
  - getCharbaId
```
public final int getCharbaId()
```
    Returns the unique id of scale.
    
    Returns:
    
    the unique id of scale.
  - getAxis
```
public final AxisKind getAxis()
```
    Which kind of axis this is.
    Possible values are: ''x', 'y' or 'r'.
    
    Returns:
    
    the kind of axis.
  - getType
```
public final AxisType getType()
```
    Returns the type of scale
    
    Returns:
    
    the type of scale.
  - getMax
```
public final double getMax()
```
    Returns the max value of scale.
    
    Returns:
    
    the max value of scale.
  - getMin
```
public final double getMin()
```
    Returns the minimum value of scale.
    
    Returns:
    
    the minimum value of scale.
  - getMaxAsString
```
public final String getMaxAsString()
```
    Returns the max value of scale.
    
    Returns:
    
    the max value of scale.
  - getMinAsString
```
public final String getMinAsString()
```
    Returns the minimum value of scale.
    
    Returns:
    
    the minimum value of scale.
  - getMaxAsDate
```
public final Date getMaxAsDate()
```
    Returns the max value of scale.
    
    Returns:
    
    the max value of scale. If missing returns is null.
  - getMinAsDate
```
public final Date getMinAsDate()
```
    Returns the minimum value of scale.
    
    Returns:
    
    the minimum value of scale. If missing returns is null.
  - getTicks
```
public final List<ScaleTickItem> getTicks()
```
    Returns the list of ticks.
    
    Returns:
    
    the list of ticks.
  - getLabelRotation
```
public final double getLabelRotation()
```
    Returns the label rotation ratio.
    
    Returns:
    
    the label rotation ratio.
  - getStart
```
public final double getStart()
```
    Returns the start value of scale.
    
    Returns:
    
    the start value of scale.
  - getEnd
```
public final double getEnd()
```
    Returns the end value of scale.
    
    Returns:
    
    the end value of scale.
  - getXCenter
```
public final int getXCenter()
```
    Returns the X center of scale.
    
    Returns:
    
    the X center of scale.
  - getYCenter
```
public final int getYCenter()
```
    Returns the Y center of scale.
    
    Returns:
    
    the Y center of scale.
  - getDrawingArea
```
public final int getDrawingArea()
```
    Returns the drawing area dimension of scale.
    
    Returns:
    
    the drawing area dimension of scale.
  - getPointLabels
```
public final List<String> getPointLabels()
```
    Returns the list of point labels of scale.
    
    Returns:
    
    the list of point labels of scale.
  - isHorizontal
```
public final boolean isHorizontal()
```
    Returns true if the scale is horizontal.
    
    Returns:
    
    true if the scale is horizontal
  - getValueAtEvent
```
public final ScaleValueItem getValueAtEvent(ChartEventContext context)
```
    Returns the value on the axis related to an event position.
    
    Parameters:
    
    context - event context instance used to get the value from the scale
    
    Returns:
    
    the value on the axis related to an event position
  - getValueAtEvent
```
public final ScaleValueItem getValueAtEvent(BaseNativeEvent event)
```
    Returns the value on the axis related to an event position.
    
    Parameters:
    
    event - event instance used to get the value from the scale
    
    Returns:
    
    the value on the axis related to an event position
  - getValueAtPixel
```
public final ScaleValueItem getValueAtPixel(double position)
```
    Returns the value on the axis related to a position, passed as pixels.
    
    Parameters:
    
    position - position in pixel used to get the value from the scale
    
    Returns:
    
    the value on the axis related to a position, passed as pixels
  - getDecimalForPixel
```
public final double getDecimalForPixel(double pixel)
```
    Used to get the data value from a given pixel.
    This is the inverse of getPixelForValue.
    The coordinate (0, 0) is at the upper-left corner of the canvas.
    
    Parameters:
    
    pixel - pixel value
    
    Returns:
    
    the data value from a given pixel
  - getPixelForDecimal
```
public final double getPixelForDecimal(double decimal)
```
    Utility for getting the pixel location of a percentage of scale.
    The coordinate (0, 0) is at the upper-left corner of the canvas.
    
    Parameters:
    
    decimal - number value to use
    
    Returns:
    
    the pixel location of a percentage of scale
  - getPixelForTick
```
public final double getPixelForTick(double index)
```
    Returns the location of the tick at the given index.
    The coordinate (0, 0) is at the upper-left corner of the canvas.
    
    Parameters:
    
    index - tick index to use
    
    Returns:
    
    the location of the tick at the given index
  - getLabelForValue
```
public final String getLabelForValue(double value)
```
    Used to get the label to display in the tooltip for the given value.
    
    Parameters:
    
    value - value of the data
    
    Returns:
    
    the label to display in the tooltip for the given value
  - getPixelForStringValue
```
public final double getPixelForStringValue(String value)
```
    Returns the location of the given data point.
    The coordinate (0, 0) is at the upper-left corner of the canvas.
    
    Parameters:
    
    value - value of the data
    
    Returns:
    
    the location of the given data point
  - getPixelForStringValue
```
public final double getPixelForStringValue(String value,
                                           double index)
```
    Returns the location of the given data point.
    The coordinate (0, 0) is at the upper-left corner of the canvas.
    
    Parameters:
    
    value - value of the data as string
    
    index - index of the data
    
    Returns:
    
    the location of the given data point
  - getPixelForDateValue
```
public final double getPixelForDateValue(Date value)
```
    Returns the location of the given data point.
    The coordinate (0, 0) is at the upper-left corner of the canvas.
    
    Parameters:
    
    value - value of the data
    
    Returns:
    
    the location of the given data point
  - getPixelForDateValue
```
public final double getPixelForDateValue(Date value,
                                         double index)
```
    Returns the location of the given data point.
    Value can either be an index or a numerical value.
    The coordinate (0, 0) is at the upper-left corner of the canvas.
    
    Parameters:
    
    value - value of the data as date
    
    index - index of the data
    
    Returns:
    
    the location of the given data point
  - getPixelForValue
```
public final double getPixelForValue(double value)
```
    Returns the location of the given data point.
    The coordinate (0, 0) is at the upper-left corner of the canvas.
    
    Parameters:
    
    value - value of the data
    
    Returns:
    
    the location of the given data point
  - getPixelForValue
```
public final double getPixelForValue(double value,
                                     double index)
```
    Returns the location of the given data point.
    Value can either be an index or a numerical value.
    The coordinate (0, 0) is at the upper-left corner of the canvas.
    
    Parameters:
    
    value - value of the data
    
    index - index of the data
    
    Returns:
    
    the location of the given data point
  - getValueForPixel
```
public final double getValueForPixel(double pixel)
```
    Used to get the data value from a given pixel.
    This is the inverse of getPixelForValue.
    The coordinate (0, 0) is at the upper-left corner of the canvas.
    
    Parameters:
    
    pixel - pixel value
    
    Returns:
    
    the data value from a given pixel
  - getBaseValue
```
public final double getBaseValue()
```
    Returns the minimum chart value.
    
    Returns:
    
    the minimum chart value
  - getBasePixel
```
public final double getBasePixel()
```
    Returns the pixel for the minimum chart value.
    The coordinate (0, 0) is at the upper-left corner of the canvas.
    
    Returns:
    
    the pixel for the minimum chart value
  - getDistanceFromCenterForValue
```
public final double getDistanceFromCenterForValue(double value)
```
    Returns the distance from the center of a specific value.
    
    Parameters:
    
    value - the value of to check
    
    Returns:
    
    the distance from the center of a specific value
  - getValueForDistanceFromCenter
```
public final double getValueForDistanceFromCenter(double distance)
```
    Returns the value calculated applying the specific distance from the center.
    
    Parameters:
    
    distance - the distance which must be applied
    
    Returns:
    
    the value calculated applying the specific distance from the center.

Class ScaleItem

Constructor Summary

Method Summary

Methods inherited from class org.pepstock.charba.client.items.BaseBoxNodeItem

Methods inherited from class org.pepstock.charba.client.items.BaseBoxItem

Methods inherited from class org.pepstock.charba.client.commons.NativeObjectContainer

Methods inherited from class java.lang.Object

Constructor Detail

ScaleItem

Method Detail

getChart

getId

getCharbaId

getAxis

getType

getMax

getMin

getMaxAsString

getMinAsString

getMaxAsDate

getMinAsDate

getTicks

getLabelRotation

getStart

getEnd

getXCenter

getYCenter

getDrawingArea

getPointLabels

isHorizontal

getValueAtEvent

getValueAtEvent

getValueAtPixel

getDecimalForPixel

getPixelForDecimal

getPixelForTick

getLabelForValue

getPixelForStringValue

getPixelForStringValue

getPixelForDateValue

getPixelForDateValue

getPixelForValue

getPixelForValue

getValueForPixel

getBaseValue

getBasePixel

getDistanceFromCenterForValue

getValueForDistanceFromCenter