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javax.swing.plaf.basic
Class BasicProgressBarUI

java.lang.Object
  |
  +--javax.swing.plaf.ComponentUI
        |
        +--javax.swing.plaf.ProgressBarUI
              |
              +--javax.swing.plaf.basic.BasicProgressBarUI

Direct Known Subclasses:

MetalProgressBarUI

public class BasicProgressBarUI

extends ProgressBarUI

A Basic L&F implementation of ProgressBarUI.

Inner Class Summary

class

BasicProgressBarUI.ChangeHandler This inner class is marked "public" due to a compiler bug.

Field Summary

protected ChangeListener	changeListener
protected JProgressBar	progressBar

Constructor Summary

BasicProgressBarUI()

Method Summary

static ComponentUI	createUI(JComponent x)
protected int	getAmountFull(Insets b, int width, int height) This determines the amount of the progress bar that should be filled based on the percent done gathered from the model.
protected int	getCellLength() Returns the width (if HORIZONTAL) or height (if VERTICAL) of each of the indivdual cells/units to be rendered in the progress bar.
protected int	getCellSpacing() Returns the spacing between each of the cells/units in the progress bar.
Dimension	getMaximumSize(JComponent c)
Dimension	getMinimumSize(JComponent c) The Minimum size for this component is 10.
protected Dimension	getPreferredInnerHorizontal()
protected Dimension	getPreferredInnerVertical()
Dimension	getPreferredSize(JComponent c)
protected Color	getSelectionBackground() The "selectionBackground" is the color of the text when it is drawn over an unfilled area of the progress bar.
protected Color	getSelectionForeground() The "selectionForeground" is the color of the text when it is drawn over a filled area of the progress bar.
protected Point	getStringPlacement(Graphics g, String progressString, int x, int y, int width, int height) Designate the place where the progress string will be drawn.
protected void	installDefaults()
protected void	installListeners()
void	installUI(JComponent c)
void	paint(Graphics g, JComponent c) All purpose paint method that should do the right thing for almost all linear progress bars.
protected void	paintString(Graphics g, int x, int y, int width, int height, int amountFull, Insets b)
protected void	setCellLength(int cellLen)
protected void	setCellSpacing(int cellSpace)
protected void	uninstallDefaults()
protected void	uninstallListeners()
void	uninstallUI(JComponent c)

Methods inherited from class javax.swing.plaf.ComponentUI

contains, getAccessibleChild, getAccessibleChildrenCount, update

Methods inherited from class java.lang.Object

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

Field Detail

progressBar

protected JProgressBar progressBar

changeListener

protected ChangeListener changeListener

Constructor Detail

BasicProgressBarUI

public BasicProgressBarUI()

Method Detail

createUI

public static ComponentUI createUI(JComponent x)

installUI

public void installUI(JComponent c)

Overrides:

installUI in class ComponentUI

uninstallUI

public void uninstallUI(JComponent c)

Overrides:

uninstallUI in class ComponentUI

installDefaults

protected void installDefaults()

uninstallDefaults

protected void uninstallDefaults()

installListeners

protected void installListeners()

uninstallListeners

protected void uninstallListeners()

getPreferredInnerHorizontal

protected Dimension getPreferredInnerHorizontal()

getPreferredInnerVertical

protected Dimension getPreferredInnerVertical()

getSelectionForeground

protected Color getSelectionForeground()

The "selectionForeground" is the color of the text when it is drawn over a filled area of the progress bar.

getSelectionBackground

protected Color getSelectionBackground()

The "selectionBackground" is the color of the text when it is drawn over an unfilled area of the progress bar.

getCellLength

protected int getCellLength()

Returns the width (if HORIZONTAL) or height (if VERTICAL) of each of the indivdual cells/units to be rendered in the progress bar. However, for text rendering simplification and aesthetic considerations, this function will return 1 when the progress string is being rendered.

Returns:

the value representing the spacing between cells

See Also:

setCellLength(int), JProgressBar.isStringPainted

setCellLength

protected void setCellLength(int cellLen)

getCellSpacing

protected int getCellSpacing()

Returns the spacing between each of the cells/units in the progress bar. However, for text rendering simplification and aesthetic considerations, this function will return 0 when the progress string is being rendered.

Returns:

the value representing the spacing between cells

See Also:

setCellSpacing(int), JProgressBar.isStringPainted

setCellSpacing

protected void setCellSpacing(int cellSpace)

getAmountFull

protected int getAmountFull(Insets b,
                            int width,
                            int height)

This determines the amount of the progress bar that should be filled based on the percent done gathered from the model. This is a common operation so it was abstracted out. It assumes that your progress bar is linear. That is, if you are making a circular progress indicator, you will want to override this method.

paint

public void paint(Graphics g,
                  JComponent c)

All purpose paint method that should do the right thing for almost all linear progress bars. By setting a few values in the defaults table, things should work just fine to paint your progress bar. Naturally, override this if you are making a circular or semi-circular progress bar.

Overrides:

paint in class ComponentUI

paintString

protected void paintString(Graphics g,
                           int x,
                           int y,
                           int width,
                           int height,
                           int amountFull,
                           Insets b)

getStringPlacement

protected Point getStringPlacement(Graphics g,
                                   String progressString,
                                   int x,
                                   int y,
                                   int width,
                                   int height)

Designate the place where the progress string will be drawn. This implementation places it at the center of the progress bar (in both x and y). Override this if you want to right, left, top, or bottom align the progress string or if you need to nudge it around for any reason.

getPreferredSize

public Dimension getPreferredSize(JComponent c)

Overrides:

getPreferredSize in class ComponentUI

getMinimumSize

public Dimension getMinimumSize(JComponent c)

The Minimum size for this component is 10. The rationale here is that there should be at least one pixel per 10 percent.

Overrides:

getMinimumSize in class ComponentUI

getMaximumSize

public Dimension getMaximumSize(JComponent c)

Overrides:

getMaximumSize in class ComponentUI