org.jdesktop.swingx
Class JXImagePanel

java.lang.Object
  extended by java.awt.Component
      extended by java.awt.Container
          extended by javax.swing.JComponent
              extended by javax.swing.JPanel
                  extended by org.jdesktop.swingx.JXPanel
                      extended by 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.BaselineResizeBehavior, 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, getBaseline, getBaselineResizeBehavior, 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, isPaintingForPrint, 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)