uk.org.toot.swingui.controlui
Class ControlKnob

java.lang.Object
  java.awt.Component
      java.awt.Container
          javax.swing.JComponent
              uk.org.toot.swingui.controlui.ControlKnob

All Implemented Interfaces:

java.awt.image.ImageObserver, java.awt.MenuContainer, java.io.Serializable, java.util.Observer

public class ControlKnob
extends javax.swing.JComponent
implements java.util.Observer

ControlKnob.java - A knob component. The knob can be rotated by dragging the knob around in a circle. From source by Grant William Braught, Dickinson College, 12/4/2000

See Also:

Serialized Form

Nested Class Summary

class	ControlKnob.AbstractMouseController
static interface	ControlKnob.MouseController

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

javax.swing.JComponent.AccessibleJComponent

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

java.awt.Component.BaselineResizeBehavior

Field Summary

static int	ROTARY_MODE
static int	VERTICAL_MODE

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

ControlKnob(LawControl c)

Method Summary

void	addNotify()
java.awt.Dimension	getMaximumSize() Return the maximum size that the knob would like to be.
java.awt.Dimension	getMinimumSize() Return the minimum size that the knob would like to be.
java.awt.Dimension	getPreferredSize() Return the ideal size that the knob would like to be.
double	getTheta() Get the current anglular position of the knob.
void	paintComponent(java.awt.Graphics g) Paint the knob on the graphics context given.
void	removeNotify()
static void	setMouseMode(int mode)
void	update(java.util.Observable obs, java.lang.Object obj)

Methods inherited from class javax.swing.JComponent

addAncestorListener, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, getAccessibleContext, 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, getUIClassID, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingForPrint, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paint, paintImmediately, paintImmediately, print, printAll, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, 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, 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, setLocation, 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 Detail

ROTARY_MODE

public static final int ROTARY_MODE

See Also:

Constant Field Values

VERTICAL_MODE

public static final int VERTICAL_MODE

See Also:

Constant Field Values

Constructor Detail

ControlKnob

public ControlKnob(LawControl c)

Method Detail

setMouseMode

public static void setMouseMode(int mode)

addNotify

public void addNotify()

Overrides:

addNotify in class javax.swing.JComponent

removeNotify

public void removeNotify()

Overrides:

removeNotify in class javax.swing.JComponent

update

public void update(java.util.Observable obs,
                   java.lang.Object obj)

Specified by:

update in interface java.util.Observer

paintComponent

public void paintComponent(java.awt.Graphics g)

Paint the knob on the graphics context given. The knob is a filled circle with a small filled circle offset within it to show the current angular position of the knob.

Overrides:

paintComponent in class javax.swing.JComponent

Parameters:

g - The graphics context on which to paint the knob.

getPreferredSize

public java.awt.Dimension getPreferredSize()

Return the ideal size that the knob would like to be.

Overrides:

getPreferredSize in class javax.swing.JComponent

Returns:

the preferred size of the knob.

getMinimumSize

public java.awt.Dimension getMinimumSize()

Return the minimum size that the knob would like to be. This is the same size as the preferred size so the knob will be of a fixed size.

Overrides:

getMinimumSize in class javax.swing.JComponent

Returns:

the minimum size of the knob.

getMaximumSize

public java.awt.Dimension getMaximumSize()

Return the maximum size that the knob would like to be. This is 50% bigger than the preferred size so the knob separation will be of a limited size.

Overrides:

getMaximumSize in class javax.swing.JComponent

Returns:

the minimum size of the knob.

getTheta

public double getTheta()

Get the current anglular position of the knob.

Returns:

the current anglular position of the knob.