Class TextFlow

javafx.scene.text.TextFlow

All Implemented Interfaces:: Styleable, EventTarget

public class TextFlow extends Pane

A specialized layout for rich text. It can be used to lay out several Text nodes in a single text flow. 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 the 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 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 node is set to false when it is laid out by the TextFlow. This happens because the content of a single Text node can be split and placed in different locations in 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 its 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 children's bounds may extend outside of its own bounds if a child's preferred size is larger than the space the TextFlow has to allocate for it.

Since:: JavaFX 8.0

Property Summary

Type	Property	Description
`final DoubleProperty`	`lineSpacing`	Defines the vertical space in pixel between lines.
`final IntegerProperty`	`tabSize`	The size of a tab stop in spaces.
`final 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, 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
`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.
`final double`	`getBaselineOffset()`	Calculates the baseline offset based on the first managed child.
`static List<CssMetaData<? extends Styleable,?>>`	`getClassCssMetaData()`	Gets the `CssMetaData` associated with this class, which may include the `CssMetaData` of its superclasses.
`final double`	`getLineSpacing()`	Gets the value of the `lineSpacing` property.
`final int`	`getTabSize()`	Gets the value of the `tabSize` property.
`final TextAlignment`	`getTextAlignment()`	Gets the value of the `textAlignment` property.
`final HitInfo`	`hitTest(Point2D point)`	Maps local point to `HitInfo` in the content.
`final DoubleProperty`	`lineSpacingProperty()`	Defines the vertical space in pixel between lines.
`final PathElement[]`	`rangeShape(int start, int end)`	Returns shape for the range of the text in local coordinates.
`final void`	`setLineSpacing(double spacing)`	Sets the value of the `lineSpacing` property.
`final void`	`setTabSize(int spaces)`	Sets the value of the `tabSize` property.
`final void`	`setTextAlignment(TextAlignment value)`	Sets the value of the `textAlignment` property.
`final IntegerProperty`	`tabSizeProperty()`	The size of a tab stop in spaces.
`final ObjectProperty<TextAlignment>`	`textAlignmentProperty()`	Defines horizontal text alignment.
`final PathElement[]`	`underlineShape(int start, int end)`	Returns the shape for the underline in local coordinates.

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

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, 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

textAlignment

public final ObjectProperty<TextAlignment> textAlignmentProperty

Defines horizontal text alignment.

Default value:

TextAlignment.LEFT

See Also:

lineSpacing

public final DoubleProperty lineSpacingProperty

Defines the vertical space in pixel between lines.

Default value:

Since:

JavaFX 8.0

See Also:

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:

Since:

See Also:

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 HitInfo 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

underlineShape

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

Returns the shape for the underline 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:: 21

setTextAlignment

public final void setTextAlignment(TextAlignment value)

Sets the value of the textAlignment property.

Property description:

Defines horizontal text alignment.

Default value:

TextAlignment.LEFT

Parameters:

value - the value for the textAlignment property

See Also:

getTextAlignment

public final TextAlignment getTextAlignment()

Gets the value of the textAlignment property.

Property description:

Defines horizontal text alignment.

Default value:

TextAlignment.LEFT

Returns:

the value of the textAlignment property

See Also:

textAlignmentProperty

public final ObjectProperty<TextAlignment> textAlignmentProperty()

Defines horizontal text alignment.

Default value:

TextAlignment.LEFT

Returns:

the textAlignment property

See Also:

setLineSpacing

public final void setLineSpacing(double spacing)

Sets the value of the lineSpacing property.

Property description:

Defines the vertical space in pixel between lines.

Default value:

Parameters:

spacing - the value for the lineSpacing property

Since:

JavaFX 8.0

See Also:

getLineSpacing

public final double getLineSpacing()

Gets the value of the lineSpacing property.

Property description:

Defines the vertical space in pixel between lines.

Default value:

Returns:

the value of the lineSpacing property

Since:

JavaFX 8.0

See Also:

lineSpacingProperty

public final DoubleProperty lineSpacingProperty()

Defines the vertical space in pixel between lines.

Default value:

Returns:

the lineSpacing property

Since:

JavaFX 8.0

See Also:

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:

Returns:

the tabSize property

Since:

See Also:

getTabSize

public final int getTabSize()

Gets the value of the tabSize property.

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:

Returns:

the value of the tabSize property

Since:

See Also:

setTabSize

public final void setTabSize(int spaces)

Sets the value of the tabSize property.

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:

Parameters:

spaces - the value for the tabSize property

Since:

See Also:

getBaselineOffset

public final double getBaselineOffset()

Description copied from class: Parent

Calculates the baseline offset based on the first managed child. If there is no such child, returns Node.getBaselineOffset().

Overrides:: getBaselineOffset in class Parent
Returns:: baseline offset

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

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