Class GradientPanel
- java.lang.Object
-
- java.awt.Component
-
- java.awt.Container
-
- javax.swing.JComponent
-
- javax.swing.JPanel
-
- org.pushingpixels.lafwidget.contrib.blogofbug.swing.components.GradientPanel
-
- All Implemented Interfaces:
ComponentListener
,ImageObserver
,MenuContainer
,Serializable
,EventListener
,Accessible
- Direct Known Subclasses:
JCarosel
,JCarouselMenu
public class GradientPanel extends JPanel implements ComponentListener
Container that draws (in an optimized way) a gradient in the background- See Also:
- Serialized Form
-
-
Nested Class Summary
-
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 Modifier and Type Field Description protected BufferedImage
cache
A pre-rendered gradient in an imageprotected Color
end
Gradient end colorprotected GradientPaint
gp
Gradient painterprotected Color
start
Gradient start colour-
Fields inherited from class javax.swing.JComponent
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
accessibleContext, 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
Constructors Constructor Description GradientPanel()
-
Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
componentHidden(ComponentEvent componentEvent)
Not used *void
componentMoved(ComponentEvent componentEvent)
Not used *void
componentResized(ComponentEvent componentEvent)
Recalculates the gradient when it's resizedvoid
componentShown(ComponentEvent componentEvent)
Ignoredvoid
paintComponent(Graphics graphics)
paints the gradient.void
setBackground(Color color)
Set the background to a single colorvoid
setBackground(Color start, Color end)
Sets two background colors for a gradient-
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, getPreferredSize, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, hide, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingForPrint, isPaintingOrigin, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paint, 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, 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, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, 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, requestFocus, requestFocus, requestFocusInWindow, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setMixingCutoutShape, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle
-
-
-
-
Field Detail
-
start
protected Color start
Gradient start colour
-
end
protected Color end
Gradient end color
-
gp
protected GradientPaint gp
Gradient painter
-
cache
protected BufferedImage cache
A pre-rendered gradient in an image
-
-
Method Detail
-
setBackground
public void setBackground(Color color)
Set the background to a single color- Overrides:
setBackground
in classJComponent
- Parameters:
color
- The color for a solid background
-
setBackground
public void setBackground(Color start, Color end)
Sets two background colors for a gradient- Parameters:
start
- Top (first) colorend
- Bottom (final) color
-
paintComponent
public void paintComponent(Graphics graphics)
paints the gradient.- Overrides:
paintComponent
in classJComponent
- Parameters:
graphics
- The graphics context
-
componentResized
public void componentResized(ComponentEvent componentEvent)
Recalculates the gradient when it's resized- Specified by:
componentResized
in interfaceComponentListener
- Parameters:
componentEvent
- The event object
-
componentShown
public void componentShown(ComponentEvent componentEvent)
Ignored- Specified by:
componentShown
in interfaceComponentListener
- Parameters:
componentEvent
- The component event
-
componentMoved
public void componentMoved(ComponentEvent componentEvent)
Not used *- Specified by:
componentMoved
in interfaceComponentListener
- Parameters:
componentEvent
- The event
-
componentHidden
public void componentHidden(ComponentEvent componentEvent)
Not used *- Specified by:
componentHidden
in interfaceComponentListener
- Parameters:
componentEvent
- The event
-
-