Package org.jjazz.flatcomponents.api

Class FlatLedIndicator

java.lang.Object

java.awt.Component

java.awt.Container

javax.swing.JComponent

org.jjazz.flatcomponents.api.FlatLedIndicator

All Implemented Interfaces:

MouseListener, ImageObserver, MenuContainer, Serializable, EventListener

public class FlatLedIndicator
extends JComponent
implements MouseListener

A simple activity indicator.

Call showActivity() to indicate activity on the led: led color goes from colorMin (minimum activity) to colorMax.

Color transition is done by first filling the led with colorMin, then overwriting it with colorMax with the transparency (alpha) channel set. When showActivity() is called, colorMax alpha channel is increased by getAlphaStepActivity(). Every DECAY_TIME_MS, colorMax alpha channel is decreased by getAlphaStepDecay().

See Also:

• Serialized Form

Nested Class Summary

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

JComponent.AccessibleJComponent

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

Component.BaselineResizeBehavior

Field Summary

Fields

Modifier and Type	Field	Description
static final int	DECAY_TIME_MS

Fields inherited from class javax.swing.JComponent

TOOL_TIP_TEXT_KEY, 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

Constructors

Constructor	Description
FlatLedIndicator()

Method Summary

Modifier and Type	Method	Description
int	getAlphaStepActivity()
int	getAlphaStepDecay()
Color	getColorMax()	The color to show maximal activity.
Color	getColorMin()	The color to show minimal activity.
int	getDiameter()
Dimension	getMaximumSize()
Dimension	getMinimumSize()
Dimension	getPreferredSize()
void	mouseClicked(MouseEvent e)
void	mouseEntered(MouseEvent e)
void	mouseExited(MouseEvent e)
void	mousePressed(MouseEvent e)
void	mouseReleased(MouseEvent e)
void	paintComponent(Graphics g)
final void	setAlphaStepActivity(int alphaStepActivity)	Each time showActivity() is called, the alpha channel of colorMax is increased by alphaStepActivity.
final void	setAlphaStepDecay(int alphaStepDecay)	Every DECAY_TIME_MS, the alpha channel of colorMax is decreased by alphaStepDecay.
final void	setColorMax(Color colorMax)
final void	setColorMin(Color colorMin)
final void	setDiameter(int diameter)
void	showActivity()	Send an "activity event".

Methods inherited from class javax.swing.JComponent

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

Methods inherited from class java.awt.Container

add, add, add, add, add, addContainerListener, 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, remove, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setLayout, transferFocusDownCycle, validate

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, contains, createImage, createImage, createVolatileImage, createVolatileImage, dispatchEvent, enable, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getAccessibleContext, 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, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, 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

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

DECAY_TIME_MS

public static final int DECAY_TIME_MS

See Also:

• Constant Field Values

Constructor Details

FlatLedIndicator

public FlatLedIndicator()

Method Details

paintComponent

public void paintComponent(Graphics g)

showActivity

public void showActivity()

Send an "activity event".

getColorMax

public Color getColorMax()

The color to show maximal activity.

Returns:

the colorMax

setColorMax

public final void setColorMax(Color colorMax)

Parameters:

colorMax - the colorMax to set

getColorMin

public Color getColorMin()

The color to show minimal activity.

Returns:

the colorMin

setColorMin

public final void setColorMin(Color colorMin)

Parameters:

colorMin - the colorMin to set

getAlphaStepDecay

public int getAlphaStepDecay()

Returns:

the alphaStepDecay

setAlphaStepDecay

public final void setAlphaStepDecay(int alphaStepDecay)

Every DECAY_TIME_MS, the alpha channel of colorMax is decreased by alphaStepDecay.

Parameters:

alphaStepDecay - the alphaStepDecay to set

getAlphaStepActivity

public int getAlphaStepActivity()

Returns:

the alphaStepActivity

setAlphaStepActivity

public final void setAlphaStepActivity(int alphaStepActivity)

Each time showActivity() is called, the alpha channel of colorMax is increased by alphaStepActivity.

Parameters:

alphaStepActivity - the alphaStepActivity to set

getDiameter

public int getDiameter()

Returns:

the diameter

setDiameter

public final void setDiameter(int diameter)

Parameters:

diameter - the diameter to set

mouseClicked

public void mouseClicked(MouseEvent e)

Specified by:

mouseClicked in interface MouseListener

mousePressed

public void mousePressed(MouseEvent e)

Specified by:

mousePressed in interface MouseListener

mouseReleased

public void mouseReleased(MouseEvent e)

Specified by:

mouseReleased in interface MouseListener

mouseEntered

public void mouseEntered(MouseEvent e)

Specified by:

mouseEntered in interface MouseListener

mouseExited

public void mouseExited(MouseEvent e)

Specified by:

mouseExited in interface MouseListener

getPreferredSize

public Dimension getPreferredSize()

Overrides:

getPreferredSize in class JComponent

getMaximumSize

public Dimension getMaximumSize()

Overrides:

getMaximumSize in class JComponent

getMinimumSize

public Dimension getMinimumSize()

Overrides:

getMinimumSize in class JComponent