BasicLabelUI (Java Platform SE 6)

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javax.swing.plaf.basic
class BasicLabelUI

java.lang.Object
  javax.swing.plaf.ComponentUI
      javax.swing.plaf.LabelUI
          javax.swing.plaf.basic.BasicLabelUI

All Implemented Interfaces:: PropertyChangeListener

Direct Known Subclasses:: MetalLabelUI

public class BasicLabelUI
extends LabelUI
implements PropertyChangeListener

A Windows L&F implementation of LabelUI. This implementation is completely static, i.e. there's only one UIView implementation that's shared by all JLabel objects.

Field Summary
`protected static BasicLabelUI`	`labelUI` The default `BasicLabelUI` instance.

Constructor Summary
`BasicLabelUI()`

Method Summary
`static ComponentUI`	`createUI(JComponent c)`
`int`	`getBaseline(JComponent c, int width, int height)` Returns the baseline.
`Component.BaselineResizeBehavior`	`getBaselineResizeBehavior(JComponent c)` Returns an enum indicating how the baseline of the component changes as the size changes.
`Dimension`	`getMaximumSize(JComponent c)` Returns the specified component's maximum size appropriate for the look and feel.
`Dimension`	`getMinimumSize(JComponent c)` Returns the specified component's minimum size appropriate for the look and feel.
`Dimension`	`getPreferredSize(JComponent c)` Returns the specified component's preferred size appropriate for the look and feel.
`protected void`	`installComponents(JLabel c)`
`protected void`	`installDefaults(JLabel c)`
`protected void`	`installKeyboardActions(JLabel l)`
`protected void`	`installListeners(JLabel c)`
`void`	`installUI(JComponent c)` Configures the specified component appropriate for the look and feel.
`protected String`	`layoutCL(JLabel label, FontMetrics fontMetrics, String text, Icon icon, Rectangle viewR, Rectangle iconR, Rectangle textR)` Forwards the call to SwingUtilities.layoutCompoundLabel().
`void`	`paint(Graphics g, JComponent c)` Paint the label text in the foreground color, if the label is opaque then paint the entire background with the background color.
`protected void`	`paintDisabledText(JLabel l, Graphics g, String s, int textX, int textY)` Paint clippedText at textX, textY with background.lighter() and then shifted down and to the right by one pixel with background.darker().
`protected void`	`paintEnabledText(JLabel l, Graphics g, String s, int textX, int textY)` Paint clippedText at textX, textY with the labels foreground color.
`void`	`propertyChange(PropertyChangeEvent e)`
`protected void`	`uninstallComponents(JLabel c)`
`protected void`	`uninstallDefaults(JLabel c)`
`protected void`	`uninstallKeyboardActions(JLabel c)`
`protected void`	`uninstallListeners(JLabel c)`
`void`	`uninstallUI(JComponent c)` Reverses configuration which was done on the specified component during `installUI`.

Methods inherited from class javax.swing.plaf.ComponentUI
`contains, createUI, getAccessibleChild, getAccessibleChildrenCount, getBaseline, getBaselineResizeBehavior, getMaximumSize, getMinimumSize, getPreferredSize, installUI, paint, uninstallUI, update`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

labelUI

protected static BasicLabelUI labelUI

The default BasicLabelUI instance. This field might not be used. To change the default instance use a subclass which overrides the createUI method, and place that class name in defaults table under the key "LabelUI".

Constructor Detail

BasicLabelUI

public BasicLabelUI()

Method Detail

createUI

public static ComponentUI createUI(JComponent c)

Parameters:: c

getBaseline

public int getBaseline(JComponent c,
                       int width,
                       int height)

Returns the baseline.

Overrides:: getBaseline in class ComponentUI
Parameters:: c; width; height

getBaselineResizeBehavior

public Component.BaselineResizeBehavior getBaselineResizeBehavior(JComponent c)

Returns an enum indicating how the baseline of the component changes as the size changes.

Overrides:: getBaselineResizeBehavior in class ComponentUI
Parameters:: c

getMaximumSize

public Dimension getMaximumSize(JComponent c)

Overrides:: getMaximumSize in class ComponentUI
Parameters:: c
Returns:: getPreferredSize(c)

getMinimumSize

public Dimension getMinimumSize(JComponent c)

Overrides:: getMinimumSize in class ComponentUI
Parameters:: c
Returns:: getPreferredSize(c)

getPreferredSize

public Dimension getPreferredSize(JComponent c)

Overrides:: getPreferredSize in class ComponentUI
Parameters:: c

installComponents

protected void installComponents(JLabel c)

Parameters:: c

installDefaults

protected void installDefaults(JLabel c)

Parameters:: c

installKeyboardActions

protected void installKeyboardActions(JLabel l)

Parameters:: l

installListeners

protected void installListeners(JLabel c)

Parameters:: c

installUI

public void installUI(JComponent c)

Overrides:: installUI in class ComponentUI
Parameters:: c

layoutCL

protected String layoutCL(JLabel label,
                          FontMetrics fontMetrics,
                          String text,
                          Icon icon,
                          Rectangle viewR,
                          Rectangle iconR,
                          Rectangle textR)

Forwards the call to SwingUtilities.layoutCompoundLabel(). This method is here so that a subclass could do Label specific layout and to shorten the method name a little.

Parameters:: label; fontMetrics; text; icon; viewR; iconR; textR

paint

public void paint(Graphics g,
                  JComponent c)

Paint the label text in the foreground color, if the label is opaque then paint the entire background with the background color. The Label text is drawn by paintEnabledText() or paintDisabledText(). The locations of the label parts are computed by layoutCL.

Overrides:: paint in class ComponentUI
Parameters:: g; c

paintDisabledText

protected void paintDisabledText(JLabel l,
                                 Graphics g,
                                 String s,
                                 int textX,
                                 int textY)

Paint clippedText at textX, textY with background.lighter() and then shifted down and to the right by one pixel with background.darker().

Parameters:: l; g; s; textX; textY

paintEnabledText

protected void paintEnabledText(JLabel l,
                                Graphics g,
                                String s,
                                int textX,
                                int textY)

Paint clippedText at textX, textY with the labels foreground color.

Parameters:: l; g; s; textX; textY

propertyChange

public void propertyChange(PropertyChangeEvent e)

Parameters:: e

uninstallComponents

protected void uninstallComponents(JLabel c)

Parameters:: c

uninstallDefaults

protected void uninstallDefaults(JLabel c)

Parameters:: c

uninstallKeyboardActions

protected void uninstallKeyboardActions(JLabel c)

Parameters:: c

uninstallListeners

protected void uninstallListeners(JLabel c)

Parameters:: c

uninstallUI

public void uninstallUI(JComponent c)

Overrides:: uninstallUI in class ComponentUI
Parameters:: c