OpenJDK 27 · javax.swing.plaf.synth.SynthScrollBarUI

Modifier and Type	Field and Description
private SynthStyle	style
private SynthStyle	thumbStyle
private SynthStyle	trackStyle
private boolean	validMinimumThumbSize

Access	Constructor and Description
public	SynthScrollBarUI() Constructs a `SynthScrollBarUI`.

Method Summary

Modifier and Type	Method and Description
protected void	configureScrollBarColors() Overrides javax.swing.plaf.basic.BasicScrollBarUI.configureScrollBarColors. Configures the scroll bar colors.
protected JButton	createDecreaseButton(int orientation) Overrides javax.swing.plaf.basic.BasicScrollBarUI.createDecreaseButton. Creates a decrease button.
protected JButton	createIncreaseButton(int orientation) Overrides javax.swing.plaf.basic.BasicScrollBarUI.createIncreaseButton. Creates an increase button.
public static ComponentUI	Returns: a UI createUI(JComponent a component c) Hides javax.swing.plaf.basic.BasicScrollBarUI.createUI. Returns a UI.
private int	getComponentState(JComponent c, Region region)
public SynthContext	getContext(JComponent c) Implements javax.swing.plaf.synth.SynthUI.getContext. Returns the Context for the specified component.
private SynthContext	getContext(JComponent c, int state)
private SynthContext	getContext(JComponent c, Region region)
private SynthContext	getContext(JComponent c, Region region, int state)
protected Dimension	getMinimumThumbSize() Overrides javax.swing.plaf.basic.BasicScrollBarUI.getMinimumThumbSize. Returns the smallest acceptable size for the thumb.
public Dimension	Returns: the preferred size of a Basic JScrollBar getPreferredSize(JComponent the `JScrollBar` that's delegating this method to us c) Overrides javax.swing.plaf.basic.BasicScrollBarUI.getPreferredSize. A vertical scrollbar's preferred width is the maximum of preferred widths of the (non `null`) increment/decrement buttons, and the minimum width of the thumb.
public boolean	getSupportsAbsolutePositioning() Overrides javax.swing.plaf.basic.BasicScrollBarUI.getSupportsAbsolutePositioning. Indicates whether the user can absolutely position the thumb with a mouse gesture (usually the middle mouse button).
protected void	installDefaults() Overrides javax.swing.plaf.basic.BasicScrollBarUI.installDefaults. Installs the defaults.
protected void	installListeners() Overrides javax.swing.plaf.basic.BasicScrollBarUI.installListeners. Installs the listeners.
public void	paint(Graphics the `Graphics` object used for painting g, JComponent the component being painted c) Overrides javax.swing.plaf.basic.BasicScrollBarUI.paint. Paints the specified component according to the Look and Feel.
protected void	paint(SynthContext context for the component being painted context, Graphics the `Graphics` object used for painting g) Paints the specified component.
public void	paintBorder(SynthContext context, Graphics g, int x, int y, int w, int h) Implements javax.swing.plaf.synth.SynthUI.paintBorder. Paints the border.
protected void	paintThumb(SynthContext context for the component being painted context, Graphics `Graphics` object used for painting g, Rectangle bounding box for the thumb thumbBounds) Paints the scrollbar thumb.
protected void	paintTrack(SynthContext context for the component being painted context, Graphics `Graphics` object used for painting g, Rectangle bounding box for the track trackBounds) Paints the scrollbar track.
public void	propertyChange(PropertyChangeEvent e) Implements java.beans.PropertyChangeListener.propertyChange. This method gets called when a bound property is changed.
protected void	setThumbRollover(boolean active) Overrides javax.swing.plaf.basic.BasicScrollBarUI.setThumbRollover. Sets whether or not the mouse is currently over the thumb.
protected void	uninstallDefaults() Overrides javax.swing.plaf.basic.BasicScrollBarUI.uninstallDefaults. Uninstalls the defaults.
protected void	uninstallListeners() Overrides javax.swing.plaf.basic.BasicScrollBarUI.uninstallListeners. Uninstall the listeners.
public void	update(Graphics the `Graphics` object used for painting g, JComponent the component being painted c) Overrides javax.swing.plaf.ComponentUI.update. Notifies this UI delegate to repaint the specified component.
private void	updateButtonDirections() Hides javax.swing.plaf.basic.BasicScrollBarUI.updateButtonDirections.
private void	updateStyle(JScrollBar c)

style	back to summary
private SynthStyle style

thumbStyle	back to summary
private SynthStyle thumbStyle

trackStyle	back to summary
private SynthStyle trackStyle

validMinimumThumbSize	back to summary
private boolean validMinimumThumbSize

SynthScrollBarUI	back to summary
public SynthScrollBarUI() Constructs a `SynthScrollBarUI`.

Method Detail

configureScrollBarColors	back to summary
protected void configureScrollBarColors() Overrides javax.swing.plaf.basic.BasicScrollBarUI.configureScrollBarColors. Doc from javax.swing.plaf.basic.BasicScrollBarUI.configureScrollBarColors. Configures the scroll bar colors. Annotations @Override

configureScrollBarColors

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protected void configureScrollBarColors()

Overrides javax.swing.plaf.basic.BasicScrollBarUI.configureScrollBarColors.

Doc from javax.swing.plaf.basic.BasicScrollBarUI.configureScrollBarColors.

Configures the scroll bar colors.

Annotations

@Override

createDecreaseButton	back to summary
protected JButton createDecreaseButton(int orientation) Overrides javax.swing.plaf.basic.BasicScrollBarUI.createDecreaseButton. Doc from javax.swing.plaf.basic.BasicScrollBarUI.createDecreaseButton. Creates a decrease button. Annotations @Override

createDecreaseButton

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protected JButton createDecreaseButton(int orientation)

Overrides javax.swing.plaf.basic.BasicScrollBarUI.createDecreaseButton.

Doc from javax.swing.plaf.basic.BasicScrollBarUI.createDecreaseButton.

Creates a decrease button.

Annotations

@Override

createIncreaseButton	back to summary
protected JButton createIncreaseButton(int orientation) Overrides javax.swing.plaf.basic.BasicScrollBarUI.createIncreaseButton. Doc from javax.swing.plaf.basic.BasicScrollBarUI.createIncreaseButton. Creates an increase button. Annotations @Override

createIncreaseButton

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protected JButton createIncreaseButton(int orientation)

Overrides javax.swing.plaf.basic.BasicScrollBarUI.createIncreaseButton.

Doc from javax.swing.plaf.basic.BasicScrollBarUI.createIncreaseButton.

Creates an increase button.

Annotations

@Override

createUI	back to summary
public static ComponentUI createUI(JComponent c) Hides javax.swing.plaf.basic.BasicScrollBarUI.createUI. Returns a UI. Parameters c:JComponent a component Returns:ComponentUI a UI

createUI

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public static ComponentUI createUI(JComponent c)

Hides javax.swing.plaf.basic.BasicScrollBarUI.createUI.

Returns a UI.

Parameters

c:JComponent: a component

Returns:ComponentUI

a UI

getComponentState	back to summary
private int getComponentState(JComponent c, Region region)

getContext	back to summary
public SynthContext getContext(JComponent c) Implements javax.swing.plaf.synth.SynthUI.getContext. Doc from javax.swing.plaf.synth.SynthUI.getContext. Returns the Context for the specified component. Annotations @Override

getContext

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public SynthContext getContext(JComponent c)

Implements javax.swing.plaf.synth.SynthUI.getContext.

Doc from javax.swing.plaf.synth.SynthUI.getContext.

Returns the Context for the specified component.

Annotations

@Override

getContext	back to summary
private SynthContext getContext(JComponent c, int state)

getContext	back to summary
private SynthContext getContext(JComponent c, Region region)

getContext	back to summary
private SynthContext getContext(JComponent c, Region region, int state)

getMinimumThumbSize	back to summary
protected Dimension getMinimumThumbSize() Overrides javax.swing.plaf.basic.BasicScrollBarUI.getMinimumThumbSize. Doc from javax.swing.plaf.basic.BasicScrollBarUI.getMinimumThumbSize. Returns the smallest acceptable size for the thumb. If the scrollbar becomes so small that this size isn't available, the thumb will be hidden. Warning the value returned by this method should not be be modified, it's a shared static constant. Annotations @Override

getMinimumThumbSize

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protected Dimension getMinimumThumbSize()

Overrides javax.swing.plaf.basic.BasicScrollBarUI.getMinimumThumbSize.

Doc from javax.swing.plaf.basic.BasicScrollBarUI.getMinimumThumbSize.

Returns the smallest acceptable size for the thumb. If the scrollbar becomes so small that this size isn't available, the thumb will be hidden.

Warning

the value returned by this method should not be be modified, it's a shared static constant.

Annotations

@Override

getPreferredSize back to summary

getPreferredSize	back to summary
public Dimension getPreferredSize(JComponent c) Overrides javax.swing.plaf.basic.BasicScrollBarUI.getPreferredSize. A vertical scrollbar's preferred width is the maximum of preferred widths of the (non `null`) increment/decrement buttons, and the minimum width of the thumb. The preferred height is the sum of the preferred heights of the same parts. The basis for the preferred size of a horizontal scrollbar is similar. The `preferredSize` is only computed once, subsequent calls to this method just return a cached size. Parameters c:JComponent the `JScrollBar` that's delegating this method to us Returns:Dimension the preferred size of a Basic JScrollBar Annotations @Override See Also `getMaximumSize`, `getMinimumSize`

public Dimension getPreferredSize(JComponent c)

Overrides javax.swing.plaf.basic.BasicScrollBarUI.getPreferredSize.

A vertical scrollbar's preferred width is the maximum of preferred widths of the (non null) increment/decrement buttons, and the minimum width of the thumb. The preferred height is the sum of the preferred heights of the same parts. The basis for the preferred size of a horizontal scrollbar is similar.

The preferredSize is only computed once, subsequent calls to this method just return a cached size.

Parameters

c:JComponent: the JScrollBar that's delegating this method to us

Returns:Dimension

the preferred size of a Basic JScrollBar

Annotations

@Override

See Also

getMaximumSize, getMinimumSize

getSupportsAbsolutePositioning	back to summary
public boolean getSupportsAbsolutePositioning() Overrides javax.swing.plaf.basic.BasicScrollBarUI.getSupportsAbsolutePositioning. Doc from javax.swing.plaf.basic.BasicScrollBarUI.getSupportsAbsolutePositioning. Indicates whether the user can absolutely position the thumb with a mouse gesture (usually the middle mouse button). Annotations @Override

getSupportsAbsolutePositioning

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public boolean getSupportsAbsolutePositioning()

Overrides javax.swing.plaf.basic.BasicScrollBarUI.getSupportsAbsolutePositioning.

Doc from javax.swing.plaf.basic.BasicScrollBarUI.getSupportsAbsolutePositioning.

Indicates whether the user can absolutely position the thumb with a mouse gesture (usually the middle mouse button).

Annotations

@Override

installDefaults	back to summary
protected void installDefaults() Overrides javax.swing.plaf.basic.BasicScrollBarUI.installDefaults. Doc from javax.swing.plaf.basic.BasicScrollBarUI.installDefaults. Installs the defaults. Annotations @Override

installDefaults

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protected void installDefaults()

Overrides javax.swing.plaf.basic.BasicScrollBarUI.installDefaults.

Doc from javax.swing.plaf.basic.BasicScrollBarUI.installDefaults.

Installs the defaults.

Annotations

@Override

installListeners	back to summary
protected void installListeners() Overrides javax.swing.plaf.basic.BasicScrollBarUI.installListeners. Doc from javax.swing.plaf.basic.BasicScrollBarUI.installListeners. Installs the listeners. Annotations @Override

installListeners

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protected void installListeners()

Overrides javax.swing.plaf.basic.BasicScrollBarUI.installListeners.

Doc from javax.swing.plaf.basic.BasicScrollBarUI.installListeners.

Installs the listeners.

Annotations

@Override

paint back to summary

paint	back to summary
public void paint(Graphics g, JComponent c) Overrides javax.swing.plaf.basic.BasicScrollBarUI.paint. Paints the specified component according to the Look and Feel. This method is not used by Synth Look and Feel. Painting is handled by the `paint(SynthContext, Graphics)` method. Parameters g:Graphics the `Graphics` object used for painting c:JComponent the component being painted Annotations @Override See Also `paint(SynthContext, Graphics)`

public void paint(Graphics g, JComponent c)

Overrides javax.swing.plaf.basic.BasicScrollBarUI.paint.

Paints the specified component according to the Look and Feel.

This method is not used by Synth Look and Feel. Painting is handled by the paint(SynthContext, Graphics) method.

Parameters

g:Graphics: the Graphics object used for painting
c:JComponent: the component being painted

Annotations

@Override

See Also

paint(SynthContext, Graphics)

paint back to summary

paint	back to summary
protected void paint(SynthContext context, Graphics g) Paints the specified component. Parameters context:SynthContext context for the component being painted g:Graphics the `Graphics` object used for painting See Also `update(Graphics, JComponent)`

protected void paint(SynthContext context, Graphics g)

Paints the specified component.

Parameters

context:SynthContext: context for the component being painted
g:Graphics: the Graphics object used for painting

See Also

update(Graphics, JComponent)

paintBorder	back to summary
public void paintBorder(SynthContext context, Graphics g, int x, int y, int w, int h) Implements javax.swing.plaf.synth.SynthUI.paintBorder. Doc from javax.swing.plaf.synth.SynthUI.paintBorder. Paints the border. Annotations @Override

paintBorder

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public void paintBorder(SynthContext context, Graphics g, int x, int y, int w, int h)

Implements javax.swing.plaf.synth.SynthUI.paintBorder.

Doc from javax.swing.plaf.synth.SynthUI.paintBorder.

Paints the border.

Annotations

@Override

paintThumb back to summary

paintThumb	back to summary
protected void paintThumb(SynthContext context, Graphics g, Rectangle thumbBounds) Paints the scrollbar thumb. Parameters context:SynthContext context for the component being painted g:Graphics `Graphics` object used for painting thumbBounds:Rectangle bounding box for the thumb

protected void paintThumb(SynthContext context, Graphics g, Rectangle thumbBounds)

Paints the scrollbar thumb.

Parameters

context:SynthContext: context for the component being painted
g:Graphics: Graphics object used for painting
thumbBounds:Rectangle: bounding box for the thumb

paintTrack back to summary

paintTrack	back to summary
protected void paintTrack(SynthContext context, Graphics g, Rectangle trackBounds) Paints the scrollbar track. Parameters context:SynthContext context for the component being painted g:Graphics `Graphics` object used for painting trackBounds:Rectangle bounding box for the track

protected void paintTrack(SynthContext context, Graphics g, Rectangle trackBounds)

Paints the scrollbar track.

Parameters

context:SynthContext: context for the component being painted
g:Graphics: Graphics object used for painting
trackBounds:Rectangle: bounding box for the track

propertyChange	back to summary
public void propertyChange(PropertyChangeEvent e) Implements java.beans.PropertyChangeListener.propertyChange. Doc from java.beans.PropertyChangeListener.propertyChange. This method gets called when a bound property is changed.

propertyChange

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public void propertyChange(PropertyChangeEvent e)

Implements java.beans.PropertyChangeListener.propertyChange.

Doc from java.beans.PropertyChangeListener.propertyChange.

This method gets called when a bound property is changed.

setThumbRollover	back to summary
protected void setThumbRollover(boolean active) Overrides javax.swing.plaf.basic.BasicScrollBarUI.setThumbRollover. Doc from javax.swing.plaf.basic.BasicScrollBarUI.setThumbRollover. Sets whether or not the mouse is currently over the thumb. Annotations @Override

setThumbRollover

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protected void setThumbRollover(boolean active)

Overrides javax.swing.plaf.basic.BasicScrollBarUI.setThumbRollover.

Doc from javax.swing.plaf.basic.BasicScrollBarUI.setThumbRollover.

Sets whether or not the mouse is currently over the thumb.

Annotations

@Override

uninstallDefaults	back to summary
protected void uninstallDefaults() Overrides javax.swing.plaf.basic.BasicScrollBarUI.uninstallDefaults. Doc from javax.swing.plaf.basic.BasicScrollBarUI.uninstallDefaults. Uninstalls the defaults. Annotations @Override

uninstallDefaults

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protected void uninstallDefaults()

Overrides javax.swing.plaf.basic.BasicScrollBarUI.uninstallDefaults.

Doc from javax.swing.plaf.basic.BasicScrollBarUI.uninstallDefaults.

Uninstalls the defaults.

Annotations

@Override

uninstallListeners	back to summary
protected void uninstallListeners() Overrides javax.swing.plaf.basic.BasicScrollBarUI.uninstallListeners. Doc from javax.swing.plaf.basic.BasicScrollBarUI.uninstallListeners. Uninstall the listeners. Annotations @Override

uninstallListeners

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protected void uninstallListeners()

Overrides javax.swing.plaf.basic.BasicScrollBarUI.uninstallListeners.

Doc from javax.swing.plaf.basic.BasicScrollBarUI.uninstallListeners.

Uninstall the listeners.

Annotations

@Override

update back to summary

update	back to summary
public void update(Graphics g, JComponent c) Overrides javax.swing.plaf.ComponentUI.update. Notifies this UI delegate to repaint the specified component. This method paints the component background, then calls the `paint(SynthContext, Graphics)` method. In general, this method does not need to be overridden by subclasses. All Look and Feel rendering code should reside in the `paint` method. Parameters g:Graphics the `Graphics` object used for painting c:JComponent the component being painted Annotations @Override See Also `paint(SynthContext, Graphics)`

public void update(Graphics g, JComponent c)

Overrides javax.swing.plaf.ComponentUI.update.

Notifies this UI delegate to repaint the specified component. This method paints the component background, then calls the paint(SynthContext, Graphics) method.

In general, this method does not need to be overridden by subclasses. All Look and Feel rendering code should reside in the paint method.

Parameters

g:Graphics: the Graphics object used for painting
c:JComponent: the component being painted

Annotations

@Override

See Also

paint(SynthContext, Graphics)

updateButtonDirections	back to summary
private void updateButtonDirections() Hides javax.swing.plaf.basic.BasicScrollBarUI.updateButtonDirections.

updateStyle	back to summary
private void updateStyle(JScrollBar c)

public Class SynthScrollBarUI

Field Summary

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Field Detail

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Method Detail