javafx.scene.layout

Class BorderPane

java.lang.Object

javafx.scene.Node

javafx.scene.Parent

javafx.scene.layout.Region

javafx.scene.layout.Pane

javafx.scene.layout.BorderPane

All Implemented Interfaces:

Styleable, EventTarget

public class BorderPane
extends Pane

BorderPane lays out children in top, left, right, bottom, and center positions.

The top and bottom children will be resized to their preferred heights and extend the width of the border pane. The left and right children will be resized to their preferred widths and extend the length between the top and bottom nodes. And the center node will be resized to fill the available space in the middle. Any of the positions may be null. Example:

     BorderPane borderPane = new BorderPane();
     ToolBar toolbar = new ToolBar();
     HBox statusbar = new HBox();
     Node appContent = new AppContentNode();
     borderPane.setTop(toolbar);
     borderPane.setCenter(appContent);
     borderPane.setBottom(statusbar);
 

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

BorderPane honors the minimum, preferred, and maximum sizes of its children. If the child's resizable range prevents it from be resized to fit within its position, it will be aligned relative to the space using a default alignment as follows:

• top: Pos.TOP_LEFT
• bottom: Pos.BOTTOM_LEFT
• left: Pos.TOP_LEFT
• right: Pos.TOP_RIGHT
• center: Pos.CENTER

See "Optional Layout Constraints" on how to customize these alignments.

BorderPane lays out each child set in the five positions regardless of the child's visible property value; unmanaged children are ignored.

Resizable Range

BorderPane is commonly used as the root of a Scene, in which case its size will track the size of the scene. If the scene or stage size has not been directly set by the application, the scene size will be initialized to the border pane's preferred size. However, if a border pane has a parent other than the scene, that parent will resize the border pane within the border pane's resizable range during layout. By default the border pane computes this range based on its content as outlined in the table below.

	width	height
minimum	left/right insets plus width required to display right/left children at their pref widths and top/bottom/center with at least their min widths	top/bottom insets plus height required to display top/bottom children at their pref heights and left/right/center with at least their min heights
preferred	left/right insets plus width required to display top/right/bottom/left/center children with at least their pref widths	top/bottom insets plus height required to display top/right/bottom/left/center children with at least their pref heights
maximum	Double.MAX_VALUE	Double.MAX_VALUE

A border pane'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.

BorderPane 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:

     borderPane.setPrefSize(500,400);
 

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

BorderPane does not clip its content by default, so it is possible that childrens' bounds may extend outside its own bounds if a child's min size prevents it from being fit within it space.

Optional Layout Constraints

An application may set constraints on individual children to customize BorderPane's layout. For each constraint, BorderPane provides a static method for setting it on the child.

Constraint	Type	Description
alignment	javafx.geometry.Pos	The alignment of the child within its area of the border pane.
margin	javafx.geometry.Insets	Margin space around the outside of the child.

Example:

     ListView list = new ListView();
     BorderPane.setAlignment(list, Pos.TOP_LEFT);
     BorderPane.setMargin(list, new Insets(12,12,12,12));
     borderPane.setCenter(list);
 

Since:

JavaFX 2.0

Field Summary

Fields inherited from class javafx.scene.layout.Region

USE_COMPUTED_SIZE, USE_PREF_SIZE

Fields inherited from class javafx.scene.Node

BASELINE_OFFSET_SAME_AS_HEIGHT

Constructor Summary

Constructors

Constructor and Description
BorderPane() Creates a BorderPane layout.
BorderPane(Node center) Creates an BorderPane layout with the given Node as the center of the BorderPane.
BorderPane(Node center, Node top, Node right, Node bottom, Node left) Creates an BorderPane layout with the given Nodes to use for each of the main layout areas of the Border Pane.

Method Summary

Modifier and Type	Method and Description
ObjectProperty<Node>	bottomProperty() The node placed on the bottom edge of this border pane.
ObjectProperty<Node>	centerProperty() The node placed in the center of this border pane.
static void	clearConstraints(Node child) Removes all border pane constraints from the child node.
protected double	computeMinHeight(double width) Computes the minimum height of this region.
protected double	computeMinWidth(double height) Computes the minimum width of this region.
protected double	computePrefHeight(double width) Computes the preferred height of this region for the given width; Region subclasses should override this method to return an appropriate value based on their content and layout strategy.
protected double	computePrefWidth(double height) Computes the preferred width of this region for the given height.
static Pos	getAlignment(Node child) Returns the child's alignment constraint if set.
Node	getBottom()
Node	getCenter()
Orientation	getContentBias() Returns the orientation of a node's resizing bias for layout purposes.
Node	getLeft()
static Insets	getMargin(Node child) Returns the child's margin constraint if set.
Node	getRight()
Node	getTop()
protected void	layoutChildren() Invoked during the layout pass to layout the children in this Parent.
ObjectProperty<Node>	leftProperty() The node placed on the left edge of this border pane.
ObjectProperty<Node>	rightProperty() The node placed on the right edge of this border pane.
static void	setAlignment(Node child, Pos value) Sets the alignment for the child when contained by a border pane.
void	setBottom(Node value)
void	setCenter(Node value)
void	setLeft(Node value)
static void	setMargin(Node child, Insets value) Sets the margin for the child when contained by a border pane.
void	setRight(Node value)
void	setTop(Node value)
ObjectProperty<Node>	topProperty() The node placed on the top edge of this border pane.

Methods inherited from class javafx.scene.layout.Pane

getChildren

Methods inherited from class javafx.scene.layout.Region

backgroundProperty, borderProperty, cacheShapeProperty, centerShapeProperty, computeMaxHeight, computeMaxWidth, getBackground, getBorder, getClassCssMetaData, getCssMetaData, getHeight, getInsets, getMaxHeight, getMaxWidth, getMinHeight, getMinWidth, getOpaqueInsets, getPadding, getPrefHeight, getPrefWidth, getShape, getUserAgentStylesheet, getWidth, heightProperty, impl_computeContains, impl_computeGeomBounds, impl_computeLayoutBounds, impl_createPeer, impl_notifyLayoutBoundsChanged, impl_pickNodeLocal, impl_updatePeer, 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, snapSize, snapSpace, snapToPixelProperty, widthProperty

Methods inherited from class javafx.scene.Parent

getBaselineOffset, getChildrenUnmodifiable, getImpl_traversalEngine, getManagedChildren, getStylesheets, impl_getAllParentStylesheets, impl_processCSS, impl_processMXNode, impl_traversalEngineProperty, isNeedsLayout, layout, lookup, needsLayoutProperty, queryAccessibleAttribute, requestLayout, requestParentLayout, setImpl_traversalEngine, setNeedsLayout, updateBounds

Methods inherited from class javafx.scene.Node

accessibleHelpProperty, accessibleRoleDescriptionProperty, accessibleRoleProperty, accessibleTextProperty, addEventFilter, addEventHandler, applyCss, autosize, blendModeProperty, boundsInLocalProperty, boundsInParentProperty, buildEventDispatchChain, cacheHintProperty, cacheProperty, clipProperty, computeAreaInScreen, contains, contains, containsBounds, cursorProperty, depthTestProperty, disabledProperty, disableProperty, effectiveNodeOrientationProperty, effectProperty, eventDispatcherProperty, executeAccessibleAction, fireEvent, focusedProperty, focusTraversableProperty, getAccessibleHelp, getAccessibleRole, getAccessibleRoleDescription, getAccessibleText, getBlendMode, getBoundsInLocal, getBoundsInParent, getCacheHint, getClip, getCursor, getDepthTest, getEffect, getEffectiveNodeOrientation, getEventDispatcher, getId, 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, hasProperties, hoverProperty, idProperty, impl_clearDirty, impl_computeIntersects, impl_cssGetCursorInitialValue, impl_cssGetFocusTraversableInitialValue, impl_findStyles, impl_geomChanged, impl_getLeafTransform, impl_getMatchingStyles, impl_getPeer, impl_getPivotX, impl_getPivotY, impl_getPivotZ, impl_getStyleMap, impl_hasTransforms, impl_intersects, impl_intersectsBounds, impl_isDirty, impl_isDirtyEmpty, impl_isShowMnemonics, impl_isTreeVisible, impl_layoutBoundsChanged, impl_markDirty, impl_pickNode, impl_processCSS, impl_reapplyCSS, impl_setShowMnemonics, impl_setStyleMap, impl_showMnemonicsProperty, impl_syncPeer, impl_transformsChanged, impl_traverse, impl_treeVisibleProperty, 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, 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, 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, setVisible, snapshot, snapshot, startDragAndDrop, startFullDrag, styleProperty, toBack, toFront, toString, translateXProperty, translateYProperty, translateZProperty, usesMirroring, visibleProperty

Methods inherited from class java.lang.Object

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

Constructor Detail

BorderPane

public BorderPane()

Creates a BorderPane layout.

BorderPane

public BorderPane(Node center)

Creates an BorderPane layout with the given Node as the center of the BorderPane.

Parameters:

center - The node to set as the center of the BorderPane.

Since:

JavaFX 8.0

BorderPane

public BorderPane(Node center,
                  Node top,
                  Node right,
                  Node bottom,
                  Node left)

Creates an BorderPane layout with the given Nodes to use for each of the main layout areas of the Border Pane. The top, right, bottom, and left nodes are listed in clockwise order.

Parameters:

center - The node to set as the center of the BorderPane.

top - The node to set as the top of the BorderPane.

right - The node to set as the right of the BorderPane.

bottom - The node to set as the bottom of the BorderPane.

left - The node to set as the left of the BorderPane.

Since:

JavaFX 8.0

Method Detail

setAlignment

public static void setAlignment(Node child,
                                Pos value)

Sets the alignment for the child when contained by a border pane. If set, will override the border pane's default alignment for the child's position. Setting the value to null will remove the constraint.

Parameters:

child - the child node of a border pane

value - the alignment position for the child

getAlignment

public static Pos getAlignment(Node child)

Returns the child's alignment constraint if set.

Parameters:

child - the child node of a border pane

Returns:

the alignment position for the child or null if no alignment was set

setMargin

public static void setMargin(Node child,
                             Insets value)

Sets the margin for the child when contained by a border pane. If set, the border pane will lay it out with the margin space around it. Setting the value to null will remove the constraint.

Parameters:

child - the child node of a border pane

value - the margin of space around the child

getMargin

public static Insets getMargin(Node child)

Returns the child's margin constraint if set.

Parameters:

child - the child node of a border pane

Returns:

the margin for the child or null if no margin was set

clearConstraints

public static void clearConstraints(Node child)

Removes all border pane constraints from the child node.

Parameters:

child - the child node

centerProperty

public final ObjectProperty<Node> centerProperty()

The node placed in the center of this border pane. If resizable, it will be resized fill the center of the border pane between the top, bottom, left, and right nodes. If the node cannot be resized to fill the center space (it's not resizable or its max size prevents it) then it will be center aligned unless the child's alignment constraint has been set.

setCenter

public final void setCenter(Node value)

getCenter

public final Node getCenter()

topProperty

public final ObjectProperty<Node> topProperty()

The node placed on the top edge of this border pane. If resizable, it will be resized to its preferred height and it's width will span the width of the border pane. If the node cannot be resized to fill the top space (it's not resizable or its max size prevents it) then it will be aligned top-left within the space unless the child's alignment constraint has been set.

setTop

public final void setTop(Node value)

getTop

public final Node getTop()

bottomProperty

public final ObjectProperty<Node> bottomProperty()

The node placed on the bottom edge of this border pane. If resizable, it will be resized to its preferred height and it's width will span the width of the border pane. If the node cannot be resized to fill the bottom space (it's not resizable or its max size prevents it) then it will be aligned bottom-left within the space unless the child's alignment constraint has been set.

setBottom

public final void setBottom(Node value)

getBottom

public final Node getBottom()

leftProperty

public final ObjectProperty<Node> leftProperty()

The node placed on the left edge of this border pane. If resizable, it will be resized to its preferred width and it's height will span the height of the border pane between the top and bottom nodes. If the node cannot be resized to fill the left space (it's not resizable or its max size prevents it) then it will be aligned top-left within the space unless the child's alignment constraint has been set.

setLeft

public final void setLeft(Node value)

getLeft

public final Node getLeft()

rightProperty

public final ObjectProperty<Node> rightProperty()

The node placed on the right edge of this border pane. If resizable, it will be resized to its preferred width and it's height will span the height of the border pane between the top and bottom nodes. If the node cannot be resized to fill the right space (it's not resizable or its max size prevents it) then it will be aligned top-right within the space unless the child's alignment constraint has been set.

setRight

public final void setRight(Node value)

getRight

public final Node getRight()

getContentBias

public Orientation getContentBias()

Description copied from class: Node

Returns the orientation of a node's resizing bias for layout purposes. If the node type has no bias, returns null. If the node is resizable and it's height depends on its width, returns HORIZONTAL, else if its width depends on its height, returns VERTICAL.

Resizable subclasses should override this method to return an appropriate value.

Overrides:

getContentBias in class Node

Returns:

null unless the center, right, bottom, left or top has a content bias.

See Also:

Node.isResizable(), Node.minWidth(double), Node.minHeight(double), Node.prefWidth(double), Node.prefHeight(double), Node.maxWidth(double), Node.maxHeight(double)

computeMinWidth

protected double computeMinWidth(double height)

Description copied from class: Region

Computes the minimum width of this region. Returns the sum of the left and right insets by default. region subclasses should override this method to return an appropriate value based on their content and layout strategy. If the subclass doesn't have a VERTICAL content bias, then the height parameter can be ignored.

Overrides:

computeMinWidth in class Region

Parameters:

height - the height that should be used if min width depends on it

Returns:

the computed minimum width of this region

computeMinHeight

protected double computeMinHeight(double width)

Description copied from class: Region

Computes the minimum height of this region. Returns the sum of the top and bottom insets by default. Region subclasses should override this method to return an appropriate value based on their content and layout strategy. If the subclass doesn't have a HORIZONTAL content bias, then the width parameter can be ignored.

Overrides:

computeMinHeight in class Region

Parameters:

width - the width that should be used if min height depends on it

Returns:

the computed minimum height for this region

computePrefWidth

protected double computePrefWidth(double height)

Description copied from class: Region

Computes the preferred width of this region for the given height. Region subclasses should override this method to return an appropriate value based on their content and layout strategy. If the subclass doesn't have a VERTICAL content bias, then the height parameter can be ignored.

Overrides:

computePrefWidth in class Region

Parameters:

height - the height that should be used if preferred width depends on it

Returns:

the computed preferred width for this region

computePrefHeight

protected double computePrefHeight(double width)

Description copied from class: Region

Computes the preferred height of this region for the given width; Region subclasses should override this method to return an appropriate value based on their content and layout strategy. If the subclass doesn't have a HORIZONTAL content bias, then the width parameter can be ignored.

Overrides:

computePrefHeight in class Region

Parameters:

width - the width that should be used if preferred height depends on it

Returns:

the computed preferred height for this region

layoutChildren

protected void layoutChildren()

Description copied from class: Parent

Invoked during the layout pass to layout the children in this Parent. By default it will only set the size of managed, resizable content to their preferred sizes and does not do any node positioning.

Subclasses should override this function to layout content as needed.

Overrides:

layoutChildren in class Parent