Class MetalScrollBarUI

javax.swing.plaf.metal.MetalScrollBarUI

All Implemented Interfaces:: LayoutManager, SwingConstants

public class MetalScrollBarUI extends BasicScrollBarUI

Implementation of ScrollBarUI for the Metal Look and Feel

Nested Class Summary

Nested classes/interfaces declared in class BasicScrollBarUI

BasicScrollBarUI.ArrowButtonListener, BasicScrollBarUI.ModelListener, BasicScrollBarUI.PropertyChangeHandler, BasicScrollBarUI.ScrollListener, BasicScrollBarUI.TrackListener

Field Summary

Modifier and Type	Field	Description
`protected MetalScrollButton`	`decreaseButton`	The decrease button.
`static final String`	`FREE_STANDING_PROP`	The property `JScrollBar.isFreeStanding`.
`protected MetalScrollButton`	`increaseButton`	The increase button.
`protected boolean`	`isFreeStanding`	The value of the property `JScrollBar.isFreeStanding`.
`protected int`	`scrollBarWidth`	The width of the scroll bar.

Fields declared in class BasicScrollBarUI

buttonListener, decrButton, DECREASE_HIGHLIGHT, decrGap, incrButton, INCREASE_HIGHLIGHT, incrGap, isDragging, maximumThumbSize, minimumThumbSize, modelListener, NO_HIGHLIGHT, propertyChangeListener, scrollbar, scrollListener, scrollTimer, thumbDarkShadowColor, thumbLightShadowColor, thumbRect, trackColor, trackHighlight, trackHighlightColor, trackListener, trackRect

Fields declared in interface SwingConstants

BOTTOM, CENTER, EAST, HORIZONTAL, LEADING, LEFT, NEXT, NORTH, NORTH_EAST, NORTH_WEST, PREVIOUS, RIGHT, SOUTH, SOUTH_EAST, SOUTH_WEST, TOP, TRAILING, VERTICAL, WEST

Constructor Summary

Constructor	Description
`MetalScrollBarUI()`	Constructs a `MetalScrollBarUI`.

Method Summary

Modifier and Type	Method	Description
`protected JButton`	`createDecreaseButton(int orientation)`	Returns the view that represents the decrease view.
`protected JButton`	`createIncreaseButton(int orientation)`	Returns the view that represents the increase view.
`static ComponentUI`	`createUI(JComponent c)`	Constructs a new `MetalScrollBarUI` instance.
`protected void`	`setThumbBounds(int x, int y, int width, int height)`	This is overridden only to increase the invalid area.

Methods declared in class BasicScrollBarUI

addLayoutComponent, configureScrollBarColors, createArrowButtonListener, createModelListener, createPropertyChangeListener, createScrollListener, createTrackListener, getMaximumSize, getMaximumThumbSize, getMinimumThumbSize, getPreferredSize, getSupportsAbsolutePositioning, getThumbBounds, getTrackBounds, installComponents, installDefaults, installKeyboardActions, installListeners, installUI, isThumbRollover, layoutContainer, layoutHScrollbar, layoutVScrollbar, minimumLayoutSize, paintDecreaseHighlight, paintIncreaseHighlight, paintThumb, paintTrack, preferredLayoutSize, removeLayoutComponent, scrollByBlock, scrollByUnit, setThumbRollover, uninstallComponents, uninstallDefaults, uninstallKeyboardActions, uninstallListeners, uninstallUI

Methods declared in class ComponentUI

contains, getAccessibleChild, getAccessibleChildrenCount, getBaseline, getBaselineResizeBehavior, getMinimumSize, paint, update

Methods declared in class Object

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

Field Details

increaseButton

protected MetalScrollButton increaseButton

The increase button.

decreaseButton

protected MetalScrollButton decreaseButton

The decrease button.

scrollBarWidth

protected int scrollBarWidth

The width of the scroll bar.

FREE_STANDING_PROP

public static final String FREE_STANDING_PROP

The property JScrollBar.isFreeStanding.

See Also:

isFreeStanding

protected boolean isFreeStanding

The value of the property JScrollBar.isFreeStanding.

Constructor Details

MetalScrollBarUI

public MetalScrollBarUI()

Constructs a MetalScrollBarUI.

Method Details

createUI

public static ComponentUI createUI(JComponent c)

Constructs a new MetalScrollBarUI instance.

Parameters:: c - a component
Returns:: a new MetalScrollBarUI instance

createDecreaseButton

protected JButton createDecreaseButton(int orientation)

Returns the view that represents the decrease view.

Overrides:: createDecreaseButton in class BasicScrollBarUI
Parameters:: orientation - the orientation
Returns:: a decrease button

createIncreaseButton

protected JButton createIncreaseButton(int orientation)

Returns the view that represents the increase view.

Overrides:: createIncreaseButton in class BasicScrollBarUI
Parameters:: orientation - the orientation
Returns:: an increase button

setThumbBounds

protected void setThumbBounds(int x, int y, int width, int height)

This is overridden only to increase the invalid area. This ensures that the "Shadow" below the thumb is invalidated

Overrides:

setThumbBounds in class BasicScrollBarUI

Parameters:

x - set the x location of the thumb

y - set the y location of the thumb

width - set the width of the thumb

height - set the height of the thumb

See Also:

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Licensed under the GNU General Public License, version 2, with the Classpath Exception.
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https://docs.oracle.com/en/java/javase/25/docs/api/java.desktop/javax/swing/plaf/metal/MetalScrollBarUI.html