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/OpenJDK 21

Class SynthScrollPaneUI

java.lang.Object
javax.swing.plaf.ComponentUI
javax.swing.plaf.ScrollPaneUI
javax.swing.plaf.basic.BasicScrollPaneUI
javax.swing.plaf.synth.SynthScrollPaneUI
All Implemented Interfaces:
PropertyChangeListener, EventListener, SynthConstants, SynthUI, ScrollPaneConstants 
public class SynthScrollPaneUI extends BasicScrollPaneUI implements PropertyChangeListener, SynthUI
Provides the Synth L&F UI delegate for JScrollPane.
Since:
1.7

Nested Class Summary

Nested classes/interfaces declared in class javax.swing.plaf.basic.BasicScrollPaneUI

BasicScrollPaneUI.HSBChangeListener, BasicScrollPaneUI.MouseWheelHandler, BasicScrollPaneUI.PropertyChangeHandler, BasicScrollPaneUI.ViewportChangeHandler, BasicScrollPaneUI.VSBChangeListener

Field Summary

Fields declared in class javax.swing.plaf.basic.BasicScrollPaneUI

hsbChangeListener, scrollpane, spPropertyChangeListener, viewportChangeListener, vsbChangeListener

Fields declared in interface javax.swing.ScrollPaneConstants

COLUMN_HEADER, HORIZONTAL_SCROLLBAR, HORIZONTAL_SCROLLBAR_ALWAYS, HORIZONTAL_SCROLLBAR_AS_NEEDED, HORIZONTAL_SCROLLBAR_NEVER, HORIZONTAL_SCROLLBAR_POLICY, LOWER_LEADING_CORNER, LOWER_LEFT_CORNER, LOWER_RIGHT_CORNER, LOWER_TRAILING_CORNER, ROW_HEADER, UPPER_LEADING_CORNER, UPPER_LEFT_CORNER, UPPER_RIGHT_CORNER, UPPER_TRAILING_CORNER, VERTICAL_SCROLLBAR, VERTICAL_SCROLLBAR_ALWAYS, VERTICAL_SCROLLBAR_AS_NEEDED, VERTICAL_SCROLLBAR_NEVER, VERTICAL_SCROLLBAR_POLICY, VIEWPORT

Fields declared in interface javax.swing.plaf.synth.SynthConstants

DEFAULT, DISABLED, ENABLED, FOCUSED, MOUSE_OVER, PRESSED, SELECTED

Constructor Summary

Constructor Description
SynthScrollPaneUI()
Constructs a SynthScrollPaneUI.

Method Summary

Modifier and Type Method Description
static ComponentUI createUI(JComponent x)
Creates a new UI object for the given component.
SynthContext getContext(JComponent c)
Returns the Context for the specified component.
void paint(Graphics g, JComponent c)
Paints the specified component according to the Look and Feel.
protected void paint(SynthContext context, Graphics g)
Paints the specified component.
void paintBorder(SynthContext context, Graphics g, int x, int y, int w, int h)
Paints the border.
void propertyChange(PropertyChangeEvent e)
This method gets called when a bound property is changed.
void update(Graphics g, JComponent c)
Notifies this UI delegate to repaint the specified component.

Methods declared in class javax.swing.plaf.basic.BasicScrollPaneUI

createHSBChangeListener, createMouseWheelListener, createPropertyChangeListener, createViewportChangeListener, createVSBChangeListener, getBaseline, getBaselineResizeBehavior, getMaximumSize, installDefaults, installKeyboardActions, installListeners, syncScrollPaneWithViewport, uninstallDefaults, uninstallKeyboardActions, uninstallListeners, updateColumnHeader, updateRowHeader, updateScrollBarDisplayPolicy, updateViewport

Methods declared in class javax.swing.plaf.ComponentUI

contains, getAccessibleChild, getAccessibleChildrenCount, getMinimumSize, getPreferredSize, installUI, uninstallUI

Methods declared in class java.lang.Object

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

Constructor Details

SynthScrollPaneUI

public SynthScrollPaneUI()
Constructs a SynthScrollPaneUI.

Method Details

createUI

public static ComponentUI createUI(JComponent x)
Creates a new UI object for the given component.
Parameters:
x - component to create UI object for
Returns:
the UI object

update

public void update(Graphics g, JComponent c)
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.

Overrides:
update in class ComponentUI
Parameters:
g - the Graphics object used for painting
c - the component being painted
See Also:

paint

public void paint(Graphics g, JComponent c)
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.

Overrides:
paint in class ComponentUI
Parameters:
g - the Graphics object used for painting
c - the component being painted
See Also:

paint

protected void paint(SynthContext context, Graphics g)
Paints the specified component.
Parameters:
context - context for the component being painted
g - the Graphics object used for painting
See Also:

paintBorder

public void paintBorder(SynthContext context, Graphics g, int x, int y, int w, int h)
Paints the border.
Specified by:
paintBorder in interface SynthUI
Parameters:
context - a component context
g - Graphics to paint on
x - the X coordinate
y - the Y coordinate
w - width of the border
h - height of the border

getContext

public SynthContext getContext(JComponent c)
Returns the Context for the specified component.
Specified by:
getContext in interface SynthUI
Parameters:
c - Component requesting SynthContext.
Returns:
SynthContext describing component.

propertyChange

public void propertyChange(PropertyChangeEvent e)
Description copied from interface: PropertyChangeListener
This method gets called when a bound property is changed.
Specified by:
propertyChange in interface PropertyChangeListener
Parameters:
e - A PropertyChangeEvent object describing the event source and the property that has changed.

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https://docs.oracle.com/en/java/javase/21/docs/api/java.desktop/javax/swing/plaf/synth/SynthScrollPaneUI.html