OpenJDK 27 · javax.swing.colorchooser.DefaultPreviewPanel

The standard preview panel for the color chooser.

Warning

Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans has been added to the java.beans package. Please see java.beans.XMLEncoder.

Field Summary

Modifier and Type	Field and Description
private Font	font Hides java.awt.Component.font.
private int	innerGap
private Color	oldColor
private String	sampleText
private int	squareGap
private int	squareSize
private int	swatchWidth
private int	textGap

Access	Constructor and Description
pack-priv	DefaultPreviewPanel()

Method Summary

Modifier and Type	Method and Description
private JColorChooser	getColorChooser()
public Dimension	getPreferredSize() Overrides javax.swing.JComponent.getPreferredSize. If the `preferredSize` has been set to a non-`null` value just returns it.
private String	getSampleText()
public void	paintComponent(Graphics g) Overrides javax.swing.JComponent.paintComponent. Calls the UI delegate's paint method, if the UI delegate is non-`null`.
private int	paintSquares(Graphics g, int offsetX)
private int	paintSwatch(Graphics g, int offsetX)
private int	paintText(Graphics g, int offsetX)

Inherited from javax.swing.JPanel:: getAccessibleContext getUI getUIClassID paramString setUI updateUI

Field Detail

font	back to summary
private Font font Hides java.awt.Component.font.

innerGap	back to summary
private int innerGap

oldColor	back to summary
private Color oldColor

sampleText	back to summary
private String sampleText

squareGap	back to summary
private int squareGap

squareSize	back to summary
private int squareSize

swatchWidth	back to summary
private int swatchWidth

textGap	back to summary
private int textGap

Constructor Detail

DefaultPreviewPanel	back to summary
pack-priv DefaultPreviewPanel()

Method Detail

getColorChooser	back to summary
private JColorChooser getColorChooser()

getPreferredSize back to summary

getPreferredSize	back to summary
public Dimension getPreferredSize() Overrides javax.swing.JComponent.getPreferredSize. Doc from javax.swing.JComponent.getPreferredSize. If the `preferredSize` has been set to a non-`null` value just returns it. If the UI delegate's `getPreferredSize` method returns a non `null` value then return that; otherwise defer to the component's layout manager.

public Dimension getPreferredSize()

Overrides javax.swing.JComponent.getPreferredSize.

Doc from javax.swing.JComponent.getPreferredSize.

If the preferredSize has been set to a non-null value just returns it. If the UI delegate's getPreferredSize method returns a non null value then return that; otherwise defer to the component's layout manager.

getSampleText	back to summary
private String getSampleText()

paintComponent back to summary

paintComponent	back to summary
public void paintComponent(Graphics g) Overrides javax.swing.JComponent.paintComponent. Doc from javax.swing.JComponent.paintComponent. Calls the UI delegate's paint method, if the UI delegate is non-`null`. We pass the delegate a copy of the `Graphics` object to protect the rest of the paint code from irrevocable changes (for example, `Graphics.translate`). If you override this in a subclass you should not make permanent changes to the passed in `Graphics`. For example, you should not alter the clip `Rectangle` or modify the transform. If you need to do these operations you may find it easier to create a new `Graphics` from the passed in `Graphics` and manipulate it. Further, if you do not invoke super's implementation you must honor the opaque property, that is if this component is opaque, you must completely fill in the background in an opaque color. If you do not honor the opaque property you will likely see visual artifacts. The passed in `Graphics` object might have a transform other than the identify transform installed on it. In this case, you might get unexpected results if you cumulatively apply another transform.

public void paintComponent(Graphics g)

Overrides javax.swing.JComponent.paintComponent.

Doc from javax.swing.JComponent.paintComponent.

Calls the UI delegate's paint method, if the UI delegate is non-null. We pass the delegate a copy of the Graphics object to protect the rest of the paint code from irrevocable changes (for example, Graphics.translate).

If you override this in a subclass you should not make permanent changes to the passed in Graphics. For example, you should not alter the clip Rectangle or modify the transform. If you need to do these operations you may find it easier to create a new Graphics from the passed in Graphics and manipulate it. Further, if you do not invoke super's implementation you must honor the opaque property, that is if this component is opaque, you must completely fill in the background in an opaque color. If you do not honor the opaque property you will likely see visual artifacts.

The passed in Graphics object might have a transform other than the identify transform installed on it. In this case, you might get unexpected results if you cumulatively apply another transform.

paintSquares	back to summary
private int paintSquares(Graphics g, int offsetX)

paintSwatch	back to summary
private int paintSwatch(Graphics g, int offsetX)

paintText	back to summary
private int paintText(Graphics g, int offsetX)

pack-priv Class DefaultPreviewPanel