Class CategoryAxis

javafx.scene.chart.CategoryAxis

All Implemented Interfaces:: Styleable, EventTarget

public final class CategoryAxis extends Axis<String>

A axis implementation that will works on string categories where each value as a unique category(tick mark) along the axis.

Since:: JavaFX 2.0

Nested Class Summary

Nested classes/interfaces declared in class javafx.scene.chart.Axis

Axis.TickMark<T>

Property Summary

Type	Property	Description
`final ReadOnlyDoubleProperty`	`categorySpacing`	This is the gap between one category and the next along this axis
`final DoubleProperty`	`endMargin`	The margin between the last tick mark and the axis end
`final BooleanProperty`	`gapStartAndEnd`	If this is true then half the space between ticks is left at the start and end
`final DoubleProperty`	`startMargin`	The margin between the axis start and the first tick-mark

Properties declared in class javafx.scene.chart.Axis

animated, autoRanging, label, side, tickLabelFill, tickLabelFont, tickLabelGap, tickLabelRotation, tickLabelsVisible, tickLength, tickMarkVisible

Properties declared in class javafx.scene.layout.Region

background, border, cacheShape, centerShape, height, insets, maxHeight, maxWidth, minHeight, minWidth, opaqueInsets, padding, prefHeight, prefWidth, scaleShape, shape, snapToPixel, width

Properties declared in class javafx.scene.Parent

needsLayout

Properties declared in class javafx.scene.Node

accessibleHelp, accessibleRoleDescription, accessibleRole, accessibleText, blendMode, boundsInLocal, boundsInParent, cacheHint, cache, clip, cursor, depthTest, disabled, disable, effectiveNodeOrientation, effect, eventDispatcher, focused, focusTraversable, focusVisible, focusWithin, hover, id, inputMethodRequests, layoutBounds, layoutX, layoutY, localToParentTransform, localToSceneTransform, managed, mouseTransparent, nodeOrientation, onContextMenuRequested, onDragDetected, onDragDone, onDragDropped, onDragEntered, onDragExited, onDragOver, onInputMethodTextChanged, onKeyPressed, onKeyReleased, onKeyTyped, onMouseClicked, onMouseDragEntered, onMouseDragExited, onMouseDragged, onMouseDragOver, onMouseDragReleased, onMouseEntered, onMouseExited, onMouseMoved, onMousePressed, onMouseReleased, onRotate, onRotationFinished, onRotationStarted, onScrollFinished, onScroll, onScrollStarted, onSwipeDown, onSwipeLeft, onSwipeRight, onSwipeUp, onTouchMoved, onTouchPressed, onTouchReleased, onTouchStationary, onZoomFinished, onZoom, onZoomStarted, opacity, parent, pickOnBounds, pressed, rotate, rotationAxis, scaleX, scaleY, scaleZ, scene, style, translateX, translateY, translateZ, viewOrder, visible

Field Summary

Fields declared in class javafx.scene.layout.Region

USE_COMPUTED_SIZE, USE_PREF_SIZE

Fields declared in class javafx.scene.Node

BASELINE_OFFSET_SAME_AS_HEIGHT

Constructor Summary

Constructor	Description
`CategoryAxis()`	Create a auto-ranging category axis with an empty list of categories.
`CategoryAxis(ObservableList<String> categories)`	Create a category axis with the given categories.

Method Summary

Modifier and Type	Method	Description
`protected Object`	`autoRange(double length)`	This calculates the categories based on the data provided to invalidateRange() method.
`protected List<String>`	`calculateTickValues(double length, Object range)`	Calculate a list of all the data values for each tick mark in range
`final ReadOnlyDoubleProperty`	`categorySpacingProperty()`	This is the gap between one category and the next along this axis
`final DoubleProperty`	`endMarginProperty()`	The margin between the last tick mark and the axis end
`final BooleanProperty`	`gapStartAndEndProperty()`	If this is true then half the space between ticks is left at the start and end
`final ObservableList<String>`	`getCategories()`	Returns a `ObservableList` of categories plotted on this axis.
`final double`	`getCategorySpacing()`	Gets the value of the `categorySpacing` property.
`static List<CssMetaData<? extends Styleable,?>>`	`getClassCssMetaData()`	Gets the `CssMetaData` associated with this class, which may include the `CssMetaData` of its superclasses.
`List<CssMetaData<? extends Styleable,?>>`	`getCssMetaData()`	This method should delegate to `Node.getClassCssMetaData()` so that a Node's CssMetaData can be accessed without the need for reflection.
`double`	`getDisplayPosition(String value)`	Get the display position along this axis for a given value.
`final double`	`getEndMargin()`	Gets the value of the `endMargin` property.
`protected Object`	`getRange()`	Called to get the current axis range.
`final double`	`getStartMargin()`	Gets the value of the `startMargin` property.
`protected String`	`getTickMarkLabel(String value)`	Get the string label name for a tick mark with the given value
`String`	`getValueForDisplay(double displayPosition)`	Get the data value for the given display position on this axis.
`double`	`getZeroPosition()`	Get the display position of the zero line along this axis.
`void`	`invalidateRange(List<String> data)`	Called when data has changed and the range may not be valid any more.
`final boolean`	`isGapStartAndEnd()`	Gets the value of the `gapStartAndEnd` property.
`boolean`	`isValueOnAxis(String value)`	Checks if the given value is plottable on this axis
`protected Dimension2D`	`measureTickMarkSize(String value, Object range)`	Measure the size of the label for given tick mark value.
`final void`	`setCategories(ObservableList<String> value)`	The ordered list of categories plotted on this axis.
`final void`	`setEndMargin(double value)`	Sets the value of the `endMargin` property.
`final void`	`setGapStartAndEnd(boolean value)`	Sets the value of the `gapStartAndEnd` property.
`protected void`	`setRange(Object range, boolean animate)`	Called to set the current axis range to the given range.
`final void`	`setStartMargin(double value)`	Sets the value of the `startMargin` property.
`final DoubleProperty`	`startMarginProperty()`	The margin between the axis start and the first tick-mark
`double`	`toNumericValue(String value)`	All axis values must be representable by some numeric value.
`String`	`toRealValue(double value)`	All axis values must be representable by some numeric value.

Methods declared in class javafx.scene.chart.Axis

animatedProperty, autoRangingProperty, computePrefHeight, computePrefWidth, getAnimated, getLabel, getSide, getTickLabelFill, getTickLabelFont, getTickLabelGap, getTickLabelRotation, getTickLength, getTickMarks, invalidateRange, isAutoRanging, isRangeValid, isTickLabelsVisible, isTickMarkVisible, labelProperty, layoutChildren, measureTickMarkLabelSize, measureTickMarkSize, requestAxisLayout, requestLayout, setAnimated, setAutoRanging, setLabel, setSide, setTickLabelFill, setTickLabelFont, setTickLabelGap, setTickLabelRotation, setTickLabelsVisible, setTickLength, setTickMarkVisible, shouldAnimate, sideProperty, tickLabelFillProperty, tickLabelFontProperty, tickLabelGapProperty, tickLabelRotationProperty, tickLabelsVisibleProperty, tickLengthProperty, tickMarksUpdated, tickMarkVisibleProperty

Methods declared in class javafx.scene.layout.Region

backgroundProperty, borderProperty, cacheShapeProperty, centerShapeProperty, computeMaxHeight, computeMaxWidth, computeMinHeight, computeMinWidth, getBackground, getBorder, getHeight, getInsets, getMaxHeight, getMaxWidth, getMinHeight, getMinWidth, getOpaqueInsets, getPadding, getPrefHeight, getPrefWidth, getShape, getUserAgentStylesheet, getWidth, heightProperty, insetsProperty, isCacheShape, isCenterShape, isResizable, isScaleShape, isSnapToPixel, layoutInArea, layoutInArea, layoutInArea, layoutInArea, maxHeight, maxHeightProperty, maxWidth, maxWidthProperty, minHeight, minHeightProperty, minWidth, minWidthProperty, opaqueInsetsProperty, paddingProperty, positionInArea, positionInArea, prefHeight, prefHeightProperty, prefWidth, prefWidthProperty, resize, scaleShapeProperty, setBackground, setBorder, setCacheShape, setCenterShape, setHeight, setMaxHeight, setMaxSize, setMaxWidth, setMinHeight, setMinSize, setMinWidth, setOpaqueInsets, setPadding, setPrefHeight, setPrefSize, setPrefWidth, setScaleShape, setShape, setSnapToPixel, setWidth, shapeProperty, snappedBottomInset, snappedLeftInset, snappedRightInset, snappedTopInset, snapPosition, snapPositionX, snapPositionY, snapSize, snapSizeX, snapSizeY, snapSpace, snapSpaceX, snapSpaceY, snapToPixelProperty, widthProperty

Methods declared in class javafx.scene.Parent

getBaselineOffset, getChildren, getChildrenUnmodifiable, getManagedChildren, getStylesheets, isNeedsLayout, layout, needsLayoutProperty, requestParentLayout, setNeedsLayout, updateBounds

Methods declared in class javafx.scene.Node

accessibleHelpProperty, accessibleRoleDescriptionProperty, accessibleRoleProperty, accessibleTextProperty, addEventFilter, addEventHandler, applyCss, autosize, blendModeProperty, boundsInLocalProperty, boundsInParentProperty, buildEventDispatchChain, cacheHintProperty, cacheProperty, clipProperty, computeAreaInScreen, contains, contains, cursorProperty, depthTestProperty, disabledProperty, disableProperty, effectiveNodeOrientationProperty, effectProperty, eventDispatcherProperty, executeAccessibleAction, fireEvent, focusedProperty, focusTraversableProperty, focusVisibleProperty, focusWithinProperty, getAccessibleHelp, getAccessibleRole, getAccessibleRoleDescription, getAccessibleText, getBlendMode, getBoundsInLocal, getBoundsInParent, getCacheHint, getClip, getContentBias, getCursor, getDepthTest, getEffect, getEffectiveNodeOrientation, getEventDispatcher, getId, getInitialCursor, getInitialFocusTraversable, getInputMethodRequests, getLayoutBounds, getLayoutX, getLayoutY, getLocalToParentTransform, getLocalToSceneTransform, getNodeOrientation, getOnContextMenuRequested, getOnDragDetected, getOnDragDone, getOnDragDropped, getOnDragEntered, getOnDragExited, getOnDragOver, getOnInputMethodTextChanged, getOnKeyPressed, getOnKeyReleased, getOnKeyTyped, getOnMouseClicked, getOnMouseDragEntered, getOnMouseDragExited, getOnMouseDragged, getOnMouseDragOver, getOnMouseDragReleased, getOnMouseEntered, getOnMouseExited, getOnMouseMoved, getOnMousePressed, getOnMouseReleased, getOnRotate, getOnRotationFinished, getOnRotationStarted, getOnScroll, getOnScrollFinished, getOnScrollStarted, getOnSwipeDown, getOnSwipeLeft, getOnSwipeRight, getOnSwipeUp, getOnTouchMoved, getOnTouchPressed, getOnTouchReleased, getOnTouchStationary, getOnZoom, getOnZoomFinished, getOnZoomStarted, getOpacity, getParent, getProperties, getPseudoClassStates, getRotate, getRotationAxis, getScaleX, getScaleY, getScaleZ, getScene, getStyle, getStyleableParent, getStyleClass, getTransforms, getTranslateX, getTranslateY, getTranslateZ, getTypeSelector, getUserData, getViewOrder, hasProperties, hoverProperty, idProperty, inputMethodRequestsProperty, intersects, intersects, isCache, isDisable, isDisabled, isFocused, isFocusTraversable, isFocusVisible, isFocusWithin, isHover, isManaged, isMouseTransparent, isPickOnBounds, isPressed, isVisible, layoutBoundsProperty, layoutXProperty, layoutYProperty, localToParent, localToParent, localToParent, localToParent, localToParent, localToParentTransformProperty, localToScene, localToScene, localToScene, localToScene, localToScene, localToScene, localToScene, localToScene, localToScene, localToScene, localToSceneTransformProperty, localToScreen, localToScreen, localToScreen, localToScreen, localToScreen, lookup, lookupAll, managedProperty, mouseTransparentProperty, nodeOrientationProperty, notifyAccessibleAttributeChanged, onContextMenuRequestedProperty, onDragDetectedProperty, onDragDoneProperty, onDragDroppedProperty, onDragEnteredProperty, onDragExitedProperty, onDragOverProperty, onInputMethodTextChangedProperty, onKeyPressedProperty, onKeyReleasedProperty, onKeyTypedProperty, onMouseClickedProperty, onMouseDragEnteredProperty, onMouseDragExitedProperty, onMouseDraggedProperty, onMouseDragOverProperty, onMouseDragReleasedProperty, onMouseEnteredProperty, onMouseExitedProperty, onMouseMovedProperty, onMousePressedProperty, onMouseReleasedProperty, onRotateProperty, onRotationFinishedProperty, onRotationStartedProperty, onScrollFinishedProperty, onScrollProperty, onScrollStartedProperty, onSwipeDownProperty, onSwipeLeftProperty, onSwipeRightProperty, onSwipeUpProperty, onTouchMovedProperty, onTouchPressedProperty, onTouchReleasedProperty, onTouchStationaryProperty, onZoomFinishedProperty, onZoomProperty, onZoomStartedProperty, opacityProperty, parentProperty, parentToLocal, parentToLocal, parentToLocal, parentToLocal, parentToLocal, pickOnBoundsProperty, pressedProperty, pseudoClassStateChanged, queryAccessibleAttribute, relocate, removeEventFilter, removeEventHandler, requestFocus, requestFocusTraversal, resizeRelocate, rotateProperty, rotationAxisProperty, scaleXProperty, scaleYProperty, scaleZProperty, sceneProperty, sceneToLocal, sceneToLocal, sceneToLocal, sceneToLocal, sceneToLocal, sceneToLocal, sceneToLocal, sceneToLocal, screenToLocal, screenToLocal, screenToLocal, setAccessibleHelp, setAccessibleRole, setAccessibleRoleDescription, setAccessibleText, setBlendMode, setCache, setCacheHint, setClip, setCursor, setDepthTest, setDisable, setDisabled, setEffect, setEventDispatcher, setEventHandler, setFocused, setFocusTraversable, setHover, setId, setInputMethodRequests, setLayoutX, setLayoutY, setManaged, setMouseTransparent, setNodeOrientation, setOnContextMenuRequested, setOnDragDetected, setOnDragDone, setOnDragDropped, setOnDragEntered, setOnDragExited, setOnDragOver, setOnInputMethodTextChanged, setOnKeyPressed, setOnKeyReleased, setOnKeyTyped, setOnMouseClicked, setOnMouseDragEntered, setOnMouseDragExited, setOnMouseDragged, setOnMouseDragOver, setOnMouseDragReleased, setOnMouseEntered, setOnMouseExited, setOnMouseMoved, setOnMousePressed, setOnMouseReleased, setOnRotate, setOnRotationFinished, setOnRotationStarted, setOnScroll, setOnScrollFinished, setOnScrollStarted, setOnSwipeDown, setOnSwipeLeft, setOnSwipeRight, setOnSwipeUp, setOnTouchMoved, setOnTouchPressed, setOnTouchReleased, setOnTouchStationary, setOnZoom, setOnZoomFinished, setOnZoomStarted, setOpacity, setPickOnBounds, setPressed, setRotate, setRotationAxis, setScaleX, setScaleY, setScaleZ, setStyle, setTranslateX, setTranslateY, setTranslateZ, setUserData, setViewOrder, setVisible, snapshot, snapshot, startDragAndDrop, startFullDrag, styleProperty, toBack, toFront, toString, translateXProperty, translateYProperty, translateZProperty, usesMirroring, viewOrderProperty, visibleProperty

Methods declared in class java.lang.Object

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

Methods declared in interface javafx.css.Styleable

getStyleableNode

Property Details

startMargin

public final DoubleProperty startMarginProperty

The margin between the axis start and the first tick-mark

See Also:

endMargin

public final DoubleProperty endMarginProperty

The margin between the last tick mark and the axis end

See Also:

gapStartAndEnd

public final BooleanProperty gapStartAndEndProperty

If this is true then half the space between ticks is left at the start and end

See Also:

categorySpacing

public final ReadOnlyDoubleProperty categorySpacingProperty

This is the gap between one category and the next along this axis

See Also:

Constructor Details

CategoryAxis

public CategoryAxis()

Create a auto-ranging category axis with an empty list of categories.

CategoryAxis

public CategoryAxis(ObservableList<String> categories)

Create a category axis with the given categories. This will not auto-range but be fixed with the given categories.

Parameters:: categories - List of the categories for this axis

Method Details

getStartMargin

public final double getStartMargin()

Gets the value of the startMargin property.

Property description:

The margin between the axis start and the first tick-mark

Returns:

the value of the startMargin property

See Also:

setStartMargin

public final void setStartMargin(double value)

Sets the value of the startMargin property.

Property description:

The margin between the axis start and the first tick-mark

Parameters:

value - the value for the startMargin property

See Also:

startMarginProperty

public final DoubleProperty startMarginProperty()

The margin between the axis start and the first tick-mark

Returns:

the startMargin property

See Also:

getEndMargin

public final double getEndMargin()

Gets the value of the endMargin property.

Property description:

The margin between the last tick mark and the axis end

Returns:

the value of the endMargin property

See Also:

setEndMargin

public final void setEndMargin(double value)

Sets the value of the endMargin property.

Property description:

The margin between the last tick mark and the axis end

Parameters:

value - the value for the endMargin property

See Also:

endMarginProperty

public final DoubleProperty endMarginProperty()

The margin between the last tick mark and the axis end

Returns:

the endMargin property

See Also:

isGapStartAndEnd

public final boolean isGapStartAndEnd()

Gets the value of the gapStartAndEnd property.

Property description:

If this is true then half the space between ticks is left at the start and end

Returns:

the value of the gapStartAndEnd property

See Also:

setGapStartAndEnd

public final void setGapStartAndEnd(boolean value)

Sets the value of the gapStartAndEnd property.

Property description:

If this is true then half the space between ticks is left at the start and end

Parameters:

value - the value for the gapStartAndEnd property

See Also:

gapStartAndEndProperty

public final BooleanProperty gapStartAndEndProperty()

If this is true then half the space between ticks is left at the start and end

Returns:

the gapStartAndEnd property

See Also:

setCategories

public final void setCategories(ObservableList<String> value)

The ordered list of categories plotted on this axis. This is set automatically based on the charts data if autoRanging is true. If the application sets the categories then auto ranging is turned off. If there is an attempt to add duplicate entry into this list, an IllegalArgumentException is thrown.

Parameters:: value - the ordered list of categories plotted on this axis

getCategories

public final ObservableList<String> getCategories()

Returns a ObservableList of categories plotted on this axis.

Returns:: ObservableList of categories for this axis.

getCategorySpacing

public final double getCategorySpacing()

Gets the value of the categorySpacing property.

Property description:

This is the gap between one category and the next along this axis

Returns:

the value of the categorySpacing property

See Also:

categorySpacingProperty

public final ReadOnlyDoubleProperty categorySpacingProperty()

This is the gap between one category and the next along this axis

Returns:

the categorySpacing property

See Also:

getRange

protected Object getRange()

Called to get the current axis range.

Specified by:: getRange in class Axis<String>
Returns:: A range object that can be passed to setRange() and calculateTickValues()

setRange

protected void setRange(Object range, boolean animate)

Called to set the current axis range to the given range. If isAnimating() is true then this method should animate the range to the new range.

Specified by:: setRange in class Axis<String>
Parameters:: range - A range object returned from autoRange(); animate - If true animate the change in range

autoRange

protected Object autoRange(double length)

This calculates the categories based on the data provided to invalidateRange() method. This must not effect the state of the axis, changing any properties of the axis. Any results of the auto-ranging should be returned in the range object. This will we passed to setRange() if it has been decided to adopt this range for this axis.

Specified by:: autoRange in class Axis<String>
Parameters:: length - The length of the axis in screen coordinates
Returns:: Range information, this is implementation dependent

calculateTickValues

protected List<String> calculateTickValues(double length, Object range)

Calculate a list of all the data values for each tick mark in range

Specified by:: calculateTickValues in class Axis<String>
Parameters:: length - The length of the axis in display units; range - A range object returned from autoRange()
Returns:: A list of tick marks that fit along the axis if it was the given length

getTickMarkLabel

protected String getTickMarkLabel(String value)

Get the string label name for a tick mark with the given value

Specified by:: getTickMarkLabel in class Axis<String>
Parameters:: value - The value to format into a tick label string
Returns:: A formatted string for the given value

measureTickMarkSize

protected Dimension2D measureTickMarkSize(String value, Object range)

Measure the size of the label for given tick mark value. This uses the font that is set for the tick marks

Overrides:: measureTickMarkSize in class Axis<String>
Parameters:: value - tick mark value; range - range to use during calculations
Returns:: size of tick mark label for given value

invalidateRange

public void invalidateRange(List<String> data)

Called when data has changed and the range may not be valid any more. This is only called by the chart if isAutoRanging() returns true. If we are auto ranging it will cause layout to be requested and auto ranging to happen on next layout pass.

Overrides:: invalidateRange in class Axis<String>
Parameters:: data - The current set of all data that needs to be plotted on this axis

getDisplayPosition

public double getDisplayPosition(String value)

Get the display position along this axis for a given value. If the value is not equal to any of the categories, Double.NaN is returned

Specified by:: getDisplayPosition in class Axis<String>
Parameters:: value - The data value to work out display position for
Returns:: display position or Double.NaN if value not one of the categories

getValueForDisplay

public String getValueForDisplay(double displayPosition)

Get the data value for the given display position on this axis. If the axis is a CategoryAxis this will be the nearest value.

Specified by:: getValueForDisplay in class Axis<String>
Parameters:: displayPosition - A pixel position on this axis
Returns:: the nearest data value to the given pixel position or null if not on axis;

isValueOnAxis

public boolean isValueOnAxis(String value)

Checks if the given value is plottable on this axis

Specified by:: isValueOnAxis in class Axis<String>
Parameters:: value - The value to check if its on axis
Returns:: true if the given value is plottable on this axis

toNumericValue

public double toNumericValue(String value)

All axis values must be representable by some numeric value. This gets the numeric value for a given data value.

Specified by:: toNumericValue in class Axis<String>
Parameters:: value - The data value to convert
Returns:: Numeric value for the given data value

toRealValue

public String toRealValue(double value)

All axis values must be representable by some numeric value. This gets the data value for a given numeric value.

Specified by:: toRealValue in class Axis<String>
Parameters:: value - The numeric value to convert
Returns:: Data value for given numeric value

getZeroPosition

public double getZeroPosition()

Get the display position of the zero line along this axis. As there is no concept of zero on a CategoryAxis this is always Double.NaN.

Specified by:: getZeroPosition in class Axis<String>
Returns:: always Double.NaN for CategoryAxis

getClassCssMetaData

public static List<CssMetaData<? extends Styleable,?>> getClassCssMetaData()

Gets the CssMetaData associated with this class, which may include the CssMetaData of its superclasses.

Returns:: the CssMetaData
Since:: JavaFX 8.0

getCssMetaData

public List<CssMetaData<? extends Styleable,?>> getCssMetaData()

This method should delegate to Node.getClassCssMetaData() so that a Node's CssMetaData can be accessed without the need for reflection.

Specified by:: getCssMetaData in interface Styleable
Overrides:: getCssMetaData in class Axis<String>
Returns:: The CssMetaData associated with this node, which may include the CssMetaData of its superclasses.
Since:: JavaFX 8.0

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Documentation extracted from JavaFX API Documentation.
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