java.lang.Object
- java.awt.Component
- - java.awt.Container
  - - javax.swing.JComponent
    - - javax.swing.JPanel
      - gov.nih.mipav.view.LineMeter

All Implemented Interfaces:

java.awt.image.ImageObserver, java.awt.MenuContainer, java.io.Serializable, java.lang.Runnable, javax.accessibility.Accessible
```
public class LineMeter
extends javax.swing.JPanel
implements java.lang.Runnable
```
LineMeter is a history-graph panel which updates its display once a second, drawing a curve of the history of inputs to setAmplitude(). It resizes to preserve the proportions given in the graph, and will record enough data to display across the entire screen.
there are a few artifacts in the drawing routine, namely, that setting the update rate to smaller than the animation rate will cause the background graph to update oddly.

See Also:

Serialized Form

Nested Class Summary
- Nested classes/interfaces inherited from class javax.swing.JPanel
  javax.swing.JPanel.AccessibleJPanel
- Nested classes/interfaces inherited from class javax.swing.JComponent
  javax.swing.JComponent.AccessibleJComponent
- Nested classes/interfaces inherited from class java.awt.Container
  java.awt.Container.AccessibleAWTContainer
- Nested classes/interfaces inherited from class java.awt.Component
  java.awt.Component.AccessibleAWTComponent, java.awt.Component.BaselineResizeBehavior, java.awt.Component.BltBufferStrategy, java.awt.Component.FlipBufferStrategy

Field Summary

Fields
Modifier and Type	Field	Description
`private int`	`animationFrame`	DOCUMENT ME!
`private java.lang.Thread`	`animationThread`	monitor animation happens in its own thread.
`private int`	`aniSampleRate`	DOCUMENT ME!
`private int`	`chartHeight`	DOCUMENT ME!
`private int`	`chartWidth`	DOCUMENT ME!
`private int`	`chartXend`	DOCUMENT ME!
`private int`	`chartXstart`	DOCUMENT ME!
`private int`	`chartYend`	DOCUMENT ME!
`private int`	`chartYstart`	DOCUMENT ME!
`private boolean`	`counterLock`	DOCUMENT ME!
`private int`	`countSinceLastUpdate`	DOCUMENT ME!
`private java.awt.Dimension`	`dim`	DOCUMENT ME!
`private int`	`drawingHeight`	DOCUMENT ME!
`private int`	`drawingWidth`	DOCUMENT ME!
`private java.awt.Graphics2D`	`g2d`	DOCUMENT ME!
`private java.awt.Insets`	`insets`	DOCUMENT ME!
`private java.awt.Color`	`lineColor`	DOCUMENT ME!
`private int`	`lineSpacing`	DOCUMENT ME!
`private int`	`numberOfDivisions`	DOCUMENT ME!
`private int`	`numberOfSamplesDisplayed`	DOCUMENT ME!
`private int`	`numberOfSamplesPerDivision`	DOCUMENT ME!
`private int`	`panelHeight`	DOCUMENT ME!
`private int`	`panelWidth`	DOCUMENT ME!
`private java.awt.Color`	`paperColor`	DOCUMENT ME!
`private java.awt.Color`	`penColor`	DOCUMENT ME!
`private int`	`pixelsWidePerSample`	DOCUMENT ME!
`private float[]`	`recentSamples`	DOCUMENT ME!
`private int`	`sampleRate`	DOCUMENT ME!
`private int`	`samplesPerUpdate`	DOCUMENT ME!
`private static long`	`serialVersionUID`	Use serialVersionUID for interoperability.
`private int`	`whitespaceH`	DOCUMENT ME!
`private int`	`whitespaceW`	DOCUMENT ME!
`private float[]`	`yLocHistory`	DOCUMENT ME!

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

LineMeter()
This is the history graph, and sets up and animation thread.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`flushRecentSamples()`	removes the samples from the buffer and transfers them to the history buffer, and resets the recent history to capture new samples.
`java.awt.Dimension`	`getMaximumSize()`	returns the panels maximum size.
`java.awt.Dimension`	`getMinimumSize()`	returns the displays minimum size.
`java.awt.Dimension`	`getPreferredSize()`	returns the panels preferred size.
`void`	`paintComponent(java.awt.Graphics g)`	repaints the history graph.
`void`	`run()`	when the thread wakes up, if the panel is showing, it will repaint panel, scrolling the graph.
`void`	`setAmplitude(float amp)`	Sets the most recent point on the history buffer.
`void`	`setLineChartColor(java.awt.Color c)`	applies the given color to bars which are "lit" and are up to the set amplitude.
`void`	`setPaperColor(java.awt.Color c)`	applies the given color to the background.
`void`	`setPenColor(java.awt.Color c)`	applies the given color to bars which are not lit and are above the set amplitude.
`void`	`setSampleRate(int samRate)`	adjusts the number of samples to be sent to the history in milliseconds.
`void`	`start()`	sets the animation/redraw thread up, then runs it.
`void`	`stop()`	shuts the animation thread off.

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, getNextFocusableComponent, getPopupLocation, 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, setBackground, 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

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - serialVersionUID
```
private static final long serialVersionUID
```
    Use serialVersionUID for interoperability.
    
    See Also:
    
    Constant Field Values
  - animationFrame
```
private int animationFrame
```
    DOCUMENT ME!
  - animationThread
```
private volatile java.lang.Thread animationThread
```
    monitor animation happens in its own thread.
  - aniSampleRate
```
private int aniSampleRate
```
    DOCUMENT ME!
  - chartWidth
```
private int chartWidth
```
    DOCUMENT ME!
  - chartHeight
```
private int chartHeight
```
    DOCUMENT ME!
  - chartXend
```
private int chartXend
```
    DOCUMENT ME!
  - chartYend
```
private int chartYend
```
    DOCUMENT ME!
  - chartXstart
```
private int chartXstart
```
    DOCUMENT ME!
  - chartYstart
```
private int chartYstart
```
    DOCUMENT ME!
  - counterLock
```
private boolean counterLock
```
    DOCUMENT ME!
  - countSinceLastUpdate
```
private int countSinceLastUpdate
```
    DOCUMENT ME!
  - dim
```
private java.awt.Dimension dim
```
    DOCUMENT ME!
  - drawingWidth
```
private int drawingWidth
```
    DOCUMENT ME!
  - drawingHeight
```
private int drawingHeight
```
    DOCUMENT ME!
  - g2d
```
private java.awt.Graphics2D g2d
```
    DOCUMENT ME!
  - insets
```
private java.awt.Insets insets
```
    DOCUMENT ME!
  - lineColor
```
private java.awt.Color lineColor
```
    DOCUMENT ME!
  - lineSpacing
```
private int lineSpacing
```
    DOCUMENT ME!
  - numberOfDivisions
```
private int numberOfDivisions
```
    DOCUMENT ME!
  - numberOfSamplesDisplayed
```
private int numberOfSamplesDisplayed
```
    DOCUMENT ME!
  - numberOfSamplesPerDivision
```
private int numberOfSamplesPerDivision
```
    DOCUMENT ME!
  - panelWidth
```
private int panelWidth
```
    DOCUMENT ME!
  - panelHeight
```
private int panelHeight
```
    DOCUMENT ME!
  - paperColor
```
private java.awt.Color paperColor
```
    DOCUMENT ME!
  - penColor
```
private java.awt.Color penColor
```
    DOCUMENT ME!
  - pixelsWidePerSample
```
private int pixelsWidePerSample
```
    DOCUMENT ME!
  - recentSamples
```
private float[] recentSamples
```
    DOCUMENT ME!
  - sampleRate
```
private int sampleRate
```
    DOCUMENT ME!
  - samplesPerUpdate
```
private int samplesPerUpdate
```
    DOCUMENT ME!
  - whitespaceH
```
private int whitespaceH
```
    DOCUMENT ME!
  - whitespaceW
```
private int whitespaceW
```
    DOCUMENT ME!
  - yLocHistory
```
private float[] yLocHistory
```
    DOCUMENT ME!
- Constructor Detail
  - LineMeter
```
public LineMeter()
```
    This is the history graph, and sets up and animation thread. The history will be large enough to display samples across the entire screen-size
- Method Detail
  - flushRecentSamples
```
public final void flushRecentSamples()
```
    removes the samples from the buffer and transfers them to the history buffer, and resets the recent history to capture new samples.
  - getMaximumSize
```
public java.awt.Dimension getMaximumSize()
```
    returns the panels maximum size.
    
    Overrides:
    
    getMaximumSize in class javax.swing.JComponent
    
    Returns:
    
    DOCUMENT ME!
  - getMinimumSize
```
public java.awt.Dimension getMinimumSize()
```
    returns the displays minimum size.
    
    Overrides:
    
    getMinimumSize in class javax.swing.JComponent
    
    Returns:
    
    DOCUMENT ME!
  - getPreferredSize
```
public java.awt.Dimension getPreferredSize()
```
    returns the panels preferred size.
    
    Overrides:
    
    getPreferredSize in class javax.swing.JComponent
    
    Returns:
    
    DOCUMENT ME!
  - paintComponent
```
public void paintComponent(java.awt.Graphics g)
```
    repaints the history graph.
    
    Overrides:
    
    paintComponent in class javax.swing.JComponent
    
    Parameters:
    
    g - DOCUMENT ME!
  - run
```
public void run()
```
    when the thread wakes up, if the panel is showing, it will repaint panel, scrolling the graph.
    
    Specified by:
    
    run in interface java.lang.Runnable
  - setAmplitude
```
public void setAmplitude(float amp)
```
    Sets the most recent point on the history buffer.
    
    Parameters:
    
    amp - -- floating point value between (and including) 0 and 1, which represents the y-coordinate on the graph. It is then adjusted to be drawn based on display size.
  - setLineChartColor
```
public void setLineChartColor(java.awt.Color c)
```
    applies the given color to bars which are "lit" and are up to the set amplitude.
    
    Parameters:
    
    c - DOCUMENT ME!
  - setPaperColor
```
public void setPaperColor(java.awt.Color c)
```
    applies the given color to the background. Thre same as setBackground()
    
    Parameters:
    
    c - DOCUMENT ME!
  - setPenColor
```
public void setPenColor(java.awt.Color c)
```
    applies the given color to bars which are not lit and are above the set amplitude.
    
    Parameters:
    
    c - DOCUMENT ME!
  - setSampleRate
```
public void setSampleRate(int samRate)
```
    adjusts the number of samples to be sent to the history in milliseconds. This allows for a recent buffer for samples not yet displayed. Changes to the sample rate will flush the current set of updates to the history buffer.
    
    Parameters:
    
    samRate - -- number of milliseconds per sample.
  - start
```
public void start()
```
    sets the animation/redraw thread up, then runs it.
  - stop
```
public void stop()
```
    shuts the animation thread off.

Class LineMeter

Nested Class Summary

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

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

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

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

Field Summary

Fields inherited from class javax.swing.JComponent

Fields inherited from class java.awt.Component

Fields inherited from interface java.awt.image.ImageObserver

Constructor Summary

Method Summary

Methods inherited from class javax.swing.JPanel

Methods inherited from class javax.swing.JComponent

Methods inherited from class java.awt.Container

Methods inherited from class java.awt.Component

Methods inherited from class java.lang.Object

Field Detail

serialVersionUID

animationFrame

animationThread

aniSampleRate

chartWidth

chartHeight

chartXend

chartYend

chartXstart

chartYstart

counterLock

countSinceLastUpdate

dim

drawingWidth

drawingHeight

g2d

insets

lineColor

lineSpacing

numberOfDivisions

numberOfSamplesDisplayed

numberOfSamplesPerDivision

panelWidth

panelHeight

paperColor

penColor

pixelsWidePerSample

recentSamples

sampleRate

samplesPerUpdate

whitespaceH

whitespaceW

yLocHistory

Constructor Detail

LineMeter

Method Detail

flushRecentSamples

getMaximumSize

getMinimumSize

getPreferredSize

paintComponent

run

setAmplitude

setLineChartColor

setPaperColor

setPenColor

setSampleRate

start

stop