JSci.awt
Class BarGraph

java.lang.Object
  java.awt.Component
      java.awt.Canvas
          JSci.awt.DoubleBufferedCanvas
              JSci.awt.CategoryGraph2D
                  JSci.awt.BarGraph

All Implemented Interfaces:

javax.accessibility.Accessible, java.util.EventListener, GraphDataListener, java.awt.image.ImageObserver, java.awt.MenuContainer, java.io.Serializable

Direct Known Subclasses:

LayeredBarGraph, StackedBarGraph

public class BarGraph

extends CategoryGraph2D

A bar graph AWT component. Multiple series are side-by-side.

See Also:

Serialized Form

Nested Class Summary

Nested classes inherited from class java.awt.Canvas

java.awt.Canvas.AccessibleAWTCanvas

Nested classes inherited from class java.awt.Component

java.awt.Component.AccessibleAWTComponent, java.awt.Component.BltBufferStrategy, java.awt.Component.FlipBufferStrategy

Field Summary

protected java.awt.Color[]	barColor Bar colors.
protected int	barPad Padding.
protected int	barWidth
protected float	maxY Min and max data points.
protected float	minY Min and max data points.
protected boolean	numbering Axis numbering.
protected java.text.NumberFormat	yNumberFormat

Fields inherited from class JSci.awt.CategoryGraph2D

axisPad, leftAxisPad, model, origin, scalePad

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

BarGraph(CategoryGraph2DModel cgm)
Constructs a bar graph.

Method Summary

void	addNotify()
void	dataChanged(GraphDataEvent e) Implementation of GraphDataListener.
protected java.awt.Point	dataToScreen(float x, float y) Converts a data point to screen coordinates.
protected void	drawAxes(java.awt.Graphics g) Draws the graph axes.
protected void	drawBars(java.awt.Graphics g) Draws the graph bars.
java.awt.Color	getColor(int n) Gets the bar color of the nth series.
float	getYIncrement() Returns the y-axis numbering increment.
float	getYMaximum()
float	getYMinimum()
protected void	offscreenPaint(java.awt.Graphics g) Paint the graph.
protected void	rescale() Rescales the bar graph.
protected java.awt.geom.Point2D.Float	screenToData(java.awt.Point p) Converts a screen point to data coordinates.
void	setBounds(int x, int y, int width, int height) Reshapes the bar graph to the specified bounding box.
void	setColor(int n, java.awt.Color c) Sets the bar color of the nth series.
void	setNumberFormat(java.text.NumberFormat format) Sets the display format used for axis numbering.
void	setNumbering(boolean flag) Turns axis numbering on/off.
void	setYIncrement(float dy) Sets the y-axis numbering increment.
void	setYNumberFormat(java.text.NumberFormat format) Sets the display format used for y-axis numbering.

Methods inherited from class JSci.awt.CategoryGraph2D

getMinimumSize, getModel, getPreferredSize, setModel

Methods inherited from class JSci.awt.DoubleBufferedCanvas

getOffscreenGraphics, paint, print, redraw, update

Methods inherited from class java.awt.Canvas

createBufferStrategy, createBufferStrategy, getAccessibleContext, getBufferStrategy

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, createVolatileImage, createVolatileImage, deliverEvent, disable, disableEvents, dispatchEvent, doLayout, enable, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, getAlignmentX, getAlignmentY, getBackground, getBounds, getBounds, getColorModel, getComponentAt, getComponentAt, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeys, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphics, getGraphicsConfiguration, getHeight, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getListeners, getLocale, getLocation, getLocation, getLocationOnScreen, getMaximumSize, getMouseListeners, getMouseMotionListeners, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getSize, getToolkit, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, invalidate, isBackgroundSet, isCursorSet, isDisplayable, isDoubleBuffered, isEnabled, isFocusable, isFocusCycleRoot, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isOpaque, isShowing, isValid, isVisible, keyDown, keyUp, layout, list, list, list, list, list, locate, location, lostFocus, minimumSize, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, paramString, postEvent, preferredSize, prepareImage, prepareImage, printAll, processComponentEvent, processEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removeNotify, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, reshape, resize, resize, setBackground, setBounds, setComponentOrientation, setCursor, setDropTarget, setEnabled, setFocusable, setFocusTraversalKeys, setFocusTraversalKeysEnabled, setFont, setForeground, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, setVisible, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle, validate

Methods inherited from class java.lang.Object

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

Field Detail

barColor

protected java.awt.Color[] barColor

Bar colors.

minY

protected float minY

Min and max data points.

maxY

protected float maxY

Min and max data points.

barWidth

protected int barWidth

barPad

protected final int barPad

Padding.

See Also:

Constant Field Values

numbering

protected boolean numbering

Axis numbering.

yNumberFormat

protected java.text.NumberFormat yNumberFormat

Constructor Detail

BarGraph

public BarGraph(CategoryGraph2DModel cgm)

Constructs a bar graph.

Method Detail

dataChanged

public void dataChanged(GraphDataEvent e)

Implementation of GraphDataListener. Application code will not use this method explicitly, it is used internally.

Specified by:

dataChanged in interface GraphDataListener

Specified by:

dataChanged in class CategoryGraph2D

setColor

public final void setColor(int n,
                           java.awt.Color c)

Sets the bar color of the nth series.

Parameters:

n - the index of the series.

c - the line color.

getColor

public final java.awt.Color getColor(int n)

Gets the bar color of the nth series.

Parameters:

n - the index of the series.

setNumbering

public final void setNumbering(boolean flag)

Turns axis numbering on/off.

addNotify

public void addNotify()

setNumberFormat

public final void setNumberFormat(java.text.NumberFormat format)

Sets the display format used for axis numbering. Convenience method.

See Also:

setYNumberFormat(NumberFormat)

setYNumberFormat

public final void setYNumberFormat(java.text.NumberFormat format)

Sets the display format used for y-axis numbering.

setYIncrement

public final void setYIncrement(float dy)

Sets the y-axis numbering increment.

Parameters:

dy - use 0.0f for auto-adjusting (default).

getYIncrement

public final float getYIncrement()

Returns the y-axis numbering increment.

getYMinimum

public final float getYMinimum()

getYMaximum

public final float getYMaximum()

drawAxes

protected final void drawAxes(java.awt.Graphics g)

Draws the graph axes.

drawBars

protected void drawBars(java.awt.Graphics g)

Draws the graph bars.

offscreenPaint

protected void offscreenPaint(java.awt.Graphics g)

Paint the graph.

Specified by:

offscreenPaint in class DoubleBufferedCanvas

setBounds

public final void setBounds(int x,
                            int y,
                            int width,
                            int height)

Reshapes the bar graph to the specified bounding box.

rescale

protected final void rescale()

Rescales the bar graph.

dataToScreen

protected final java.awt.Point dataToScreen(float x,
                                            float y)

Converts a data point to screen coordinates.

screenToData

protected final java.awt.geom.Point2D.Float screenToData(java.awt.Point p)

Converts a screen point to data coordinates.