Class TextFlow

javafx.scene.text.TextFlow

All Implemented Interfaces:: Styleable, EventTarget

public class TextFlow
extends Pane

TextFlow is special layout designed to lay out rich text. It can be used to layout several Text nodes in a single text flow. The TextFlow uses the text and the font of each Text node inside of it plus its own width and text alignment to determine the location for each child. A single Text node can span over several lines due to wrapping, and the visual location of Text node can differ from the logical location due to bidi reordering.

Any Node, other than Text, will be treated as an embedded object in the text layout. It will be inserted in the content using its preferred width, height, and baseline offset.

When a Text node is inside of a TextFlow, some of its properties are ignored. For example, the x and y properties of the Text node are ignored since the location of the node is determined by the parent. Likewise, the wrapping width in the Text node is ignored since the width used for wrapping is the TextFlow's width. The value of the pickOnBounds property of a Text is set to false when it is laid out by the TextFlow. This happens because the content of a single Text node can divided and placed in the different locations on the TextFlow (usually due to line breaking and bidi reordering).

The wrapping width of the layout is determined by the region's current width. It can be specified by the application by setting the textflow's preferred width. If no wrapping is desired, the application can either set the preferred with to Double.MAX_VALUE or Region.USE_COMPUTED_SIZE.

Paragraphs are separated by '\n' present in any Text child.

Example of a TextFlow:


     Text text1 = new Text("Big italic red text");
     text1.setFill(Color.RED);
     text1.setFont(Font.font("Helvetica", FontPosture.ITALIC, 40));
     Text text2 = new Text(" little bold blue text");
     text2.setFill(Color.BLUE);
     text2.setFont(Font.font("Helvetica", FontWeight.BOLD, 10));
     TextFlow textFlow = new TextFlow(text1, text2);

TextFlow lays out each managed child regardless of the child's visible property value; unmanaged children are ignored for all layout calculations.

TextFlow may be styled with backgrounds and borders using CSS. See Region superclass for details.

Resizable Range

A textflow's parent will resize the textflow within the textflow's range during layout. By default the textflow computes this range based on its content as outlined in the tables below.

TextFlow Resize Table
	width	height
minimum	left/right insets	top/bottom insets plus the height of the text content
preferred	left/right insets plus the width of the text content	top/bottom insets plus the height of the text content
maximum	Double.MAX_VALUE	Double.MAX_VALUE

A textflow's unbounded maximum width and height are an indication to the parent that it may be resized beyond its preferred size to fill whatever space is assigned to it.

TextFlow provides properties for setting the size range directly. These properties default to the sentinel value Region.USE_COMPUTED_SIZE, however the application may set them to other values as needed:


     textflow.setMaxWidth(500);

Applications may restore the computed values by setting these properties back to Region.USE_COMPUTED_SIZE.

TextFlow does not clip its content by default, so it is possible that childrens' bounds may extend outside its own bounds if a child's pref size is larger than the space textflow has to allocate for it.

Since:: JavaFX 8.0

Property Summary

Properties
Type	Property	Description
`DoubleProperty`	`lineSpacing`	Defines the vertical space in pixel between lines.
`IntegerProperty`	`tabSize`	The size of a tab stop in spaces.
`ObjectProperty<TextAlignment>`	`textAlignment`	Defines horizontal text alignment.

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, 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

Constructors
Constructor	Description
`TextFlow()`	Creates an empty TextFlow layout.
`TextFlow(Node... children)`	Creates a TextFlow layout with the given children.

Method Summary

Modifier and Type	Method	Description
`PathElement[]`	`caretShape(int charIndex, boolean leading)`	Returns shape of caret in local coordinates.
`static List<CssMetaData<? extends Styleable,?>>`	`getClassCssMetaData()`
`double`	`getLineSpacing()`	Gets the value of the property lineSpacing.
`int`	`getTabSize()`	Gets the value of the property tabSize.
`TextAlignment`	`getTextAlignment()`	Gets the value of the property textAlignment.
`HitInfo`	`hitTest(Point2D point)`	Maps local point to index in the content.
`DoubleProperty`	`lineSpacingProperty()`	Defines the vertical space in pixel between lines.
`PathElement[]`	`rangeShape(int start, int end)`	Returns shape for the range of the text in local coordinates.
`void`	`setLineSpacing(double spacing)`	Sets the value of the property lineSpacing.
`void`	`setTabSize(int spaces)`	Sets the value of the property tabSize.
`void`	`setTextAlignment(TextAlignment value)`	Sets the value of the property textAlignment.
`IntegerProperty`	`tabSizeProperty()`	The size of a tab stop in spaces.
`ObjectProperty<TextAlignment>`	`textAlignmentProperty()`	Defines horizontal text alignment.

Methods declared in class javafx.scene.layout.Pane

getChildren

Methods declared in class javafx.scene.layout.Region

backgroundProperty, borderProperty, cacheShapeProperty, centerShapeProperty, computeMaxHeight, computeMaxWidth, computeMinHeight, computeMinWidth, computePrefHeight, computePrefWidth, getBackground, getBorder, getCssMetaData, 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, getChildrenUnmodifiable, getManagedChildren, getStylesheets, isNeedsLayout, layout, layoutChildren, needsLayoutProperty, requestLayout, 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, 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, getTransforms, getTranslateX, getTranslateY, getTranslateZ, getTypeSelector, getUserData, getViewOrder, hasProperties, hoverProperty, idProperty, inputMethodRequestsProperty, intersects, intersects, isCache, isDisable, isDisabled, isFocused, isFocusTraversable, 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, 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, getStyleClass

Property Details

textAlignment

public final ObjectProperty<TextAlignment> textAlignmentProperty

Defines horizontal text alignment.

Default value:: TextAlignment.LEFT
See Also:: getTextAlignment(), setTextAlignment(TextAlignment)

lineSpacing

public final DoubleProperty lineSpacingProperty

Defines the vertical space in pixel between lines.

Default value:: 0
Since:: JavaFX 8.0
See Also:: getLineSpacing(), setLineSpacing(double)

tabSize

public final IntegerProperty tabSizeProperty

The size of a tab stop in spaces. Values less than 1 are treated as 1. This value overrides the tabSize of contained Text nodes.

Default value:: 8
Since:: 14
See Also:: getTabSize(), setTabSize(int)

Constructor Details

TextFlow

public TextFlow()

Creates an empty TextFlow layout.

TextFlow

public TextFlow(Node... children)

Creates a TextFlow layout with the given children.

Parameters:: children - children.

Method Details

hitTest

public final HitInfo hitTest(Point2D point)

Maps local point to index in the content.

Parameters:: point - the specified point to be tested
Returns:: a HitInfo representing the character index found
Since:: 9

caretShape

public PathElement[] caretShape(int charIndex, boolean leading)

Returns shape of caret in local coordinates.

Parameters:: charIndex - the character index for the caret; leading - whether the caret is biased on the leading edge of the character
Returns:: an array of PathElement which can be used to create a Shape
Since:: 9

rangeShape

public final PathElement[] rangeShape(int start, int end)

Returns shape for the range of the text in local coordinates.

Parameters:: start - the beginning character index for the range; end - the end character index (non-inclusive) for the range
Returns:: an array of PathElement which can be used to create a Shape
Since:: 9

setTextAlignment

public final void setTextAlignment(TextAlignment value)

Sets the value of the property textAlignment.

Property description:: Defines horizontal text alignment.
Default value:: TextAlignment.LEFT

getTextAlignment

public final TextAlignment getTextAlignment()

Gets the value of the property textAlignment.

Property description:: Defines horizontal text alignment.
Default value:: TextAlignment.LEFT

textAlignmentProperty

public final ObjectProperty<TextAlignment> textAlignmentProperty()

Defines horizontal text alignment.

Default value:: TextAlignment.LEFT
See Also:: getTextAlignment(), setTextAlignment(TextAlignment)

setLineSpacing

public final void setLineSpacing(double spacing)

Sets the value of the property lineSpacing.

Property description:: Defines the vertical space in pixel between lines.
Default value:: 0
Since:: JavaFX 8.0

getLineSpacing

public final double getLineSpacing()

Gets the value of the property lineSpacing.

Property description:: Defines the vertical space in pixel between lines.
Default value:: 0
Since:: JavaFX 8.0

lineSpacingProperty

public final DoubleProperty lineSpacingProperty()

Defines the vertical space in pixel between lines.

Default value:: 0
Since:: JavaFX 8.0
See Also:: getLineSpacing(), setLineSpacing(double)

tabSizeProperty

public final IntegerProperty tabSizeProperty()

The size of a tab stop in spaces. Values less than 1 are treated as 1. This value overrides the tabSize of contained Text nodes.

Default value:: 8
Since:: 14
See Also:: getTabSize(), setTabSize(int)

getTabSize

public final int getTabSize()

Gets the value of the property tabSize.

Property description:: The size of a tab stop in spaces. Values less than 1 are treated as 1. This value overrides the tabSize of contained Text nodes.
Default value:: 8
Since:: 14

setTabSize

public final void setTabSize(int spaces)

Sets the value of the property tabSize.

Property description:: The size of a tab stop in spaces. Values less than 1 are treated as 1. This value overrides the tabSize of contained Text nodes.
Default value:: 8
Since:: 14

getClassCssMetaData

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

Returns:: The CssMetaData associated with this class, which may include the CssMetaData of its superclasses.

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