org.jdesktop.swingx
Class JXImagePanel

java.lang.Object
  java.awt.Component
      java.awt.Container
          javax.swing.JComponent
              javax.swing.JPanel
                  org.jdesktop.swingx.JXPanel
                      org.jdesktop.swingx.JXImagePanel

All Implemented Interfaces:

ImageObserver, MenuContainer, Serializable, Accessible, Scrollable

public class JXImagePanel
extends JXPanel

A panel that draws an image. The standard mode is to draw the specified image centered and unscaled. The component&s preferred size is based on the image, unless explicitly set by the user.

Images to be displayed can be set based on URL, Image, etc. This is accomplished by passing in an image loader.

 public class URLImageLoader extends Callable<Image> {
     private URL url;
 
     public URLImageLoader(URL url) {
         url.getClass(); //null check
         this.url = url;
     }
 
     public Image call() throws Exception {
         return ImageIO.read(url);
     }
 }
 
 imagePanel.setImageLoader(new URLImageLoader(url));
 

This component also supports allowing the user to set the image. If the JXImagePanel is editable, then when the user clicks on the JXImagePanel a FileChooser is shown allowing the user to pick some other image to use within the JXImagePanel.

TODO In the future, the JXImagePanel will also support tiling of images, scaling, resizing, cropping, segues etc.

TODO other than the image loading this component can be replicated by a JXPanel with the appropriate Painter. What's the point?

See Also:

Serialized Form

Nested Class Summary

static class

JXImagePanel.Style

Nested classes/interfaces inherited from class javax.swing.JPanel

JPanel.AccessibleJPanel

Nested classes/interfaces inherited from class javax.swing.JComponent

JComponent.AccessibleJComponent

Nested classes/interfaces inherited from class java.awt.Container

Container.AccessibleAWTContainer

Nested classes/interfaces inherited from class java.awt.Component

Component.AccessibleAWTComponent, Component.BltBufferStrategy, Component.FlipBufferStrategy

Field Summary

Fields inherited from class javax.swing.JComponent

accessibleContext, listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW

Fields inherited from class java.awt.Component

BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Fields inherited from interface java.awt.image.ImageObserver

ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

Constructor Summary

JXImagePanel()

JXImagePanel(URL imageUrl)

Method Summary

Image	getImage()
Dimension	getPreferredSize() If the preferredSize has been set to a non-null value just returns it.
JXImagePanel.Style	getStyle()
boolean	isEditable()
protected void	paintComponent(Graphics g) Overridden to paint the image on the panel
void	setDefaultImage(Image def)
void	setEditable(boolean editable)
void	setImage(Image image) Sets the image to use for the background of this panel.
void	setImageLoader(Callable<Image> loadImage)
void	setStyle(JXImagePanel.Style s) Sets what style to use when painting the image

Methods inherited from class org.jdesktop.swingx.JXPanel

getAlpha, getBackgroundPainter, getEffectiveAlpha, getPreferredScrollableViewportSize, getScrollableBlockIncrement, getScrollableTracksViewportHeight, getScrollableTracksViewportWidth, getScrollableUnitIncrement, isInheritAlpha, isPaintBorderInsets, paint, setAlpha, setBackground, setBackgroundPainter, setInheritAlpha, setPaintBorderInsets, setScrollableTracksViewportHeight, setScrollableTracksViewportWidth

Methods inherited from class javax.swing.JPanel

getAccessibleContext, getUI, getUIClassID, paramString, setUI, updateUI

Methods inherited from class javax.swing.JComponent

addAncestorListener, addNotify, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBorder, getBounds, getClientProperty, getComponentGraphics, getComponentPopupMenu, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getFontMetrics, getGraphics, getHeight, getInheritsPopupMenu, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPopupLocation, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paintBorder, paintChildren, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBorder, setComponentPopupMenu, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setEnabled, setFocusTraversalKeys, setFont, setForeground, setInheritsPopupMenu, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update

Methods inherited from class java.awt.Container

add, add, add, add, add, addContainerListener, addImpl, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, getMousePosition, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setLayout, transferFocusBackward, transferFocusDownCycle, validate, validateTree

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusUpCycle

Methods inherited from class java.lang.Object

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

Constructor Detail

JXImagePanel

public JXImagePanel()

JXImagePanel

public JXImagePanel(URL imageUrl)

Method Detail

setImage

public void setImage(Image image)

Sets the image to use for the background of this panel. This image is painted whether the panel is opaque or translucent.

Parameters:

image - if null, clears the image. Otherwise, this will set the image to be painted. If the preferred size has not been explicitly set, then the image dimensions will alter the preferred size of the panel.

getImage

public Image getImage()

Returns:

the image used for painting the background of this panel

setEditable

public void setEditable(boolean editable)

Parameters:

editable -

isEditable

public boolean isEditable()

Returns:

whether the image for this panel can be changed or not via the UI. setImage may still be called, even if isEditable returns false.

setStyle

public void setStyle(JXImagePanel.Style s)

Sets what style to use when painting the image

Parameters:

s -

getStyle

public JXImagePanel.Style getStyle()

Returns:

the Style used for drawing the image (CENTERED, TILED, etc).

getPreferredSize

public Dimension 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. The old property value in PCE fired by this method might not be always correct!

Overrides:

getPreferredSize in class JComponent

Returns:

the value of the preferredSize property

See Also:

JComponent.setPreferredSize(java.awt.Dimension), ComponentUI

paintComponent

protected void paintComponent(Graphics g)

Overridden to paint the image on the panel

Overrides:

paintComponent in class JXPanel

Parameters:

g -

See Also:

JComponent.paint(java.awt.Graphics), ComponentUI

setDefaultImage

public void setDefaultImage(Image def)

setImageLoader

public void setImageLoader(Callable<Image> loadImage)