SynthScrollBarUI
Class SynthScrollBarUI
- java.lang.Object
-
- javax.swing.plaf.ComponentUI
-
- javax.swing.plaf.ScrollBarUI
-
- javax.swing.plaf.basic.BasicScrollBarUI
-
- javax.swing.plaf.synth.SynthScrollBarUI
- All Implemented Interfaces:
- LayoutManager, PropertyChangeListener, EventListener, SynthConstants, SynthUI, SwingConstants
public class SynthScrollBarUI extends BasicScrollBarUI implements PropertyChangeListener, SynthUI
Provides the Synth L&F UI delegate for JScrollBar
.
- Since:
- 1.7
Nested Classes
Nested classes/interfaces inherited from class javax.swing.plaf.basic.BasicScrollBarUI
BasicScrollBarUI.ArrowButtonListener, BasicScrollBarUI.ModelListener, BasicScrollBarUI.PropertyChangeHandler, BasicScrollBarUI.ScrollListener, BasicScrollBarUI.TrackListener
Fields
Fields inherited from class javax.swing.plaf.basic.BasicScrollBarUI
buttonListener, decrButton, DECREASE_HIGHLIGHT, decrGap, incrButton, INCREASE_HIGHLIGHT, incrGap, isDragging, maximumThumbSize, minimumThumbSize, modelListener, NO_HIGHLIGHT, propertyChangeListener, scrollbar, scrollBarWidth, scrollListener, scrollTimer, thumbColor, thumbDarkShadowColor, thumbHighlightColor, thumbLightShadowColor, thumbRect, trackColor, trackHighlight, trackHighlightColor, trackListener, trackRect
Fields inherited from interface javax.swing.plaf.synth.SynthConstants
DEFAULT, DISABLED, ENABLED, FOCUSED, MOUSE_OVER, PRESSED, SELECTED
Fields inherited from interface javax.swing.SwingConstants
BOTTOM, CENTER, EAST, HORIZONTAL, LEADING, LEFT, NEXT, NORTH, NORTH_EAST, NORTH_WEST, PREVIOUS, RIGHT, SOUTH, SOUTH_EAST, SOUTH_WEST, TOP, TRAILING, VERTICAL, WEST
Constructors
SynthScrollBarUI
public SynthScrollBarUI()
Methods
createUI
public static ComponentUI createUI(JComponent c)
installDefaults
protected void installDefaults()
- Overrides:
-
installDefaults
in classBasicScrollBarUI
configureScrollBarColors
protected void configureScrollBarColors()
- Overrides:
-
configureScrollBarColors
in classBasicScrollBarUI
installListeners
protected void installListeners()
- Overrides:
-
installListeners
in classBasicScrollBarUI
uninstallListeners
protected void uninstallListeners()
- Overrides:
-
uninstallListeners
in classBasicScrollBarUI
uninstallDefaults
protected void uninstallDefaults()
- Overrides:
-
uninstallDefaults
in classBasicScrollBarUI
getContext
public SynthContext getContext(JComponent c)
Returns the Context for the specified component.
- Specified by:
-
getContext
in interfaceSynthUI
- Parameters:
-
c
- Component requesting SynthContext. - Returns:
- SynthContext describing component.
getSupportsAbsolutePositioning
public boolean getSupportsAbsolutePositioning()
Indicates whether the user can absolutely position the thumb with a mouse gesture (usually the middle mouse button).
- Overrides:
-
getSupportsAbsolutePositioning
in classBasicScrollBarUI
- Returns:
- true if a mouse gesture can absolutely position the thumb
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 classComponentUI
- Parameters:
-
g
- theGraphics
object used for painting -
c
- the component being painted - See Also:
paint(SynthContext,Graphics)
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 classBasicScrollBarUI
- Parameters:
-
g
- theGraphics
object used for painting -
c
- the component being painted - See Also:
paint(SynthContext,Graphics)
paint
protected void paint(SynthContext context, Graphics g)
Paints the specified component.
- Parameters:
-
context
- context for the component being painted -
g
- theGraphics
object used for painting - See Also:
update(Graphics,JComponent)
paintBorder
public void paintBorder(SynthContext context, Graphics g, int x, int y, int w, int h)
Paints the border.
- Specified by:
-
paintBorder
in interfaceSynthUI
- 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
paintTrack
protected void paintTrack(SynthContext context, Graphics g, Rectangle trackBounds)
Paints the scrollbar track.
- Parameters:
-
context
- context for the component being painted -
g
-Graphics
object used for painting -
trackBounds
- bounding box for the track
paintThumb
protected void paintThumb(SynthContext context, Graphics g, Rectangle thumbBounds)
Paints the scrollbar thumb.
- Parameters:
-
context
- context for the component being painted -
g
-Graphics
object used for painting -
thumbBounds
- bounding box for the thumb
getPreferredSize
public Dimension getPreferredSize(JComponent c)
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.
- Overrides:
-
getPreferredSize
in classBasicScrollBarUI
- Parameters:
-
c
- theJScrollBar
that's delegating this method to us - Returns:
- the preferred size of a Basic JScrollBar
- See Also:
-
BasicScrollBarUI.getMaximumSize(javax.swing.JComponent)
,ComponentUI.getMinimumSize(javax.swing.JComponent)
getMinimumThumbSize
protected Dimension 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.
- Overrides:
-
getMinimumThumbSize
in classBasicScrollBarUI
- Returns:
- The smallest acceptable size for the thumb.
- See Also:
BasicScrollBarUI.getMaximumThumbSize()
createDecreaseButton
protected JButton createDecreaseButton(int orientation)
- Overrides:
-
createDecreaseButton
in classBasicScrollBarUI
createIncreaseButton
protected JButton createIncreaseButton(int orientation)
- Overrides:
-
createIncreaseButton
in classBasicScrollBarUI
setThumbRollover
protected void setThumbRollover(boolean active)
Sets whether or not the mouse is currently over the thumb.
- Overrides:
-
setThumbRollover
in classBasicScrollBarUI
- Parameters:
-
active
- True indicates the thumb is currently active.
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 interfacePropertyChangeListener
- Parameters:
-
e
- A PropertyChangeEvent object describing the event source and the property that has changed.
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