bookExamples.ch27BusinessGraphics.charts
Class PieGraph

java.lang.Object
  java.awt.Component
      java.awt.Container
          javax.swing.JComponent
              bookExamples.ch27BusinessGraphics.charts.PieGraph

All Implemented Interfaces:

Paintable, java.awt.image.ImageObserver, java.awt.MenuContainer, java.io.Serializable

public class PieGraph
extends javax.swing.JComponent
implements Paintable

PieGraph implements the Drawable interface and uses the update method to draw a pie graphics.graph on a Canvas. Requires an instance of DoubleDataBean in order to be constructed.
Global variables:

• DoubleDataBean: instance of DoubleDataBean so the graphics.graph is drawn with the proper data
• CIRCLESIZE: 360 degrees in a circle
• startAngle: the point affineTransform which to begin drawing the pie graphics.graph
• radius: the radius of the pie graphics.graph
• centerX: the X coordinate of the center of the pie graphics.graph
• centerY: the Y coordinate of the center of the pie graphics.graph

Since:

JDK 1.3

Author:

Allison McHenry, Douglas Lyon, PhD

See Also:

Serialized Form

Nested Class Summary

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

javax.swing.JComponent.AccessibleJComponent

Field Summary

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

PieGraph()
Default constructor, used to instantiate an instance of PieGraph by the testing class

PieGraph(DoubleDataBean _dd)
Constructor used to set the data, labels and title only

PieGraph(int _radius)
Constructor used to set just the radius

PieGraph(int w, int h)
Constructor used to set just the radius

Method Summary

int	getCenterX() Gets the X coordinate of the center of the pie graphics.graph.
int	getCenterY() Gets the Y coordinate of the center of the pie graphics.graph.
java.lang.String[]	getLabels() Gets pie graphics.graph labels.
java.awt.Dimension	getMinimumSize()
java.awt.Dimension	getPreferredSize()
int	getRadius() Gets the pie graphics.graph radius.
double	getStartAngle() Gets the point on the circle where the pie should begin to be drawn.
static void	main(java.lang.String[] args)
void	paint(java.awt.Graphics g) Calls the update method to paint this data from DoubleDataBean onto an image.
void	setCenterX(int _centerX) Sets the X coordinate of the center of the pie graphics.graph.
void	setCenterY(int _centerY) Sets the Y coordinate of the center of the pie graphics.graph.
void	setLabels(java.lang.String[] _labels) Sets pie graphics.graph labels.
void	setLocation(int x, int y) Sets the center of the pie graphics.graph X and Y coordinates.
void	setRadius(int _radius)
void	setStartAngle(double _startAngle) Sets the point on the circle where the pie should begin to be drawn.
void	setValues(double[] _x)

Methods inherited from class javax.swing.JComponent

addAncestorListener, addNotify, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, getAccessibleContext, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBorder, getBounds, getClientProperty, getComponentPopupMenu, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getFontMetrics, getGraphics, getHeight, getInheritsPopupMenu, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getNextFocusableComponent, getPopupLocation, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getUIClassID, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingTile, isRequestFocusEnabled, isValidateRoot, 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, transferFocusBackward, 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, 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, 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, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusUpCycle

Methods inherited from class java.lang.Object

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

Constructor Detail

PieGraph

public PieGraph()

Default constructor, used to instantiate an instance of PieGraph by the testing class

Parameters:

_dd - instance of DoubleDataBean used to draw the graphics.graph

PieGraph

public PieGraph(int _radius)

Constructor used to set just the radius

Parameters:

_radius - The pie radius

PieGraph

public PieGraph(int w,
                int h)

Constructor used to set just the radius

Parameters:

w - the image width

h - the image height

PieGraph

public PieGraph(DoubleDataBean _dd)

Constructor used to set the data, labels and title only

Parameters:

_x - The data to graphics.graph

_labels - The labels which correspond to the data elements

_title - The title of the graphics.graph

Method Detail

getPreferredSize

public java.awt.Dimension getPreferredSize()

Overrides:

getPreferredSize in class javax.swing.JComponent

getMinimumSize

public java.awt.Dimension getMinimumSize()

Overrides:

getMinimumSize in class javax.swing.JComponent

setLocation

public void setLocation(int x,
                        int y)

Sets the center of the pie graphics.graph X and Y coordinates.

Overrides:

setLocation in class java.awt.Component

Parameters:

_x - X coordinate of center of pie graphics.graph

_y - Y coordinate of center of pie graphics.graph

setValues

public void setValues(double[] _x)

setStartAngle

public void setStartAngle(double _startAngle)

Sets the point on the circle where the pie should begin to be drawn.

Parameters:

_startAngle - Pie graphics.graph start angle

setCenterX

public void setCenterX(int _centerX)

Sets the X coordinate of the center of the pie graphics.graph.

Parameters:

_centerX - X-coordinate of center of pie

setCenterY

public void setCenterY(int _centerY)

Sets the Y coordinate of the center of the pie graphics.graph.

Parameters:

_centerY - Y-coordinate of center of pie

setLabels

public void setLabels(java.lang.String[] _labels)

Sets pie graphics.graph labels. Each label should correspond to one data point in the X array.

Parameters:

_labels - Pie graphics.graph labels

setRadius

public void setRadius(int _radius)

getRadius

public int getRadius()

Gets the pie graphics.graph radius.

Returns:

radius Pie graphics.graph radius

getStartAngle

public double getStartAngle()

Gets the point on the circle where the pie should begin to be drawn.

Returns:

_startAngle Pie graphics.graph start angle

getCenterX

public int getCenterX()

Gets the X coordinate of the center of the pie graphics.graph.

Returns:

centerX X-coordinate of center of pie

getCenterY

public int getCenterY()

Gets the Y coordinate of the center of the pie graphics.graph.

Returns:

centerY Y-coordinate of center of pie

getLabels

public java.lang.String[] getLabels()

Gets pie graphics.graph labels. Each label should correspond to one data point in the X array.

Returns:

_labels Pie graphics.graph labels

paint

public void paint(java.awt.Graphics g)

Calls the update method to paint this data from DoubleDataBean onto an image. It calls update instead of overriding the paint method directly because "paint" is a specialized method name and it conflicts with the "paint" method in the PieGraphCanvas class.

Specified by:

paint in interface Paintable

Overrides:

paint in class javax.swing.JComponent

Parameters:

g - Graphics context for drawing

See Also:

PieGraphPanel.#update

main

public static void main(java.lang.String[] args)