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Class ncsa.horizon.awt.color.CurveEditCanvas

java.lang.Object
  |
  +--java.awt.Component
        |
        +--java.awt.Canvas
              |
              +--ncsa.horizon.awt.color.CurveEditCanvas

public class CurveEditCanvas

extends java.awt.Canvas

implements java.awt.event.ActionListener

A canvas for graphically editing an array of integers.

This class is used by Horizon to edit one color component of an EditableColorModel; however, its design and implementation is fairly general and can be used to edit any array of integers. To edit the array, the class must be provided with an CurveEditMode object which controls how the data is edited.

The canvas plots the current values of the array as a graph. Additional graphics used to edit the curve may be added by the CurveEditMode in use. The CurveEditMode also handles all the mouse events to update the values in the array.

See Also:

Serialized Form

Field Summary

int[]	curve
CurveEditMode	mode

Fields inherited from class java.awt.Component

BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Constructor Summary

CurveEditCanvas()
create an edit canvas with an initial uneditable state

CurveEditCanvas(int width, int height)
create an edit canvas with an initial uneditable state

CurveEditCanvas(int[] data, CurveEditMode cem, int width, int height)
create an edit canvas with a given array of data and a mode for editing it.

Method Summary

void	actionPerformed(java.awt.event.ActionEvent ev)
void	addActionListener(java.awt.event.ActionListener l)
int[]	getCurve() return the array this canvas is displaying and editing
CurveEditMode	getMode() return a reference to the current editing mode
java.awt.Dimension	getPreferredSize()
static void	main(java.lang.String[] args)
void	paint(java.awt.Graphics g)
void	removeActionListener(java.awt.event.ActionListener l)
void	setMode(CurveEditMode cem) set the current mode for editing the curve

Methods inherited from class java.awt.Canvas

addNotify, paint

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addNotify, addPropertyChangeListener, addPropertyChangeListener, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, deliverEvent, disable, disableEvents, dispatchEvent, doLayout, enable, enable, enableEvents, enableInputMethods, firePropertyChange, getAlignmentX, getAlignmentY, getBackground, getBounds, getBounds, getColorModel, getComponentAt, getComponentAt, getComponentOrientation, getCursor, getDropTarget, getFont, getFontMetrics, getForeground, getGraphics, getHeight, getInputContext, getInputMethodRequests, getLocale, getLocation, getLocation, getLocationOnScreen, getMaximumSize, getMinimumSize, getName, getParent, getPeer, getPreferredSize, getSize, getSize, getToolkit, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, invalidate, isDisplayable, isDoubleBuffered, isEnabled, isFocusTraversable, 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, paint, paramString, postEvent, preferredSize, prepareImage, prepareImage, printAll, print, processComponentEvent, processEvent, processFocusEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, remove, removeComponentListener, removeFocusListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeNotify, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, reshape, resize, resize, setBackground, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setEnabled, setFont, setForeground, setLocale, setLocation, setLocation, setName, setSize, setSize, setVisible, show, show, size, toString, transferFocus, update, validate

Methods inherited from class java.lang.Object

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

Field Detail

mode

protected CurveEditMode mode

curve

protected int[] curve

Constructor Detail

CurveEditCanvas

public CurveEditCanvas()

create an edit canvas with an initial uneditable state

CurveEditCanvas

public CurveEditCanvas(int width,
                       int height)

create an edit canvas with an initial uneditable state

Parameters:

width - the width of the canvas. A non-positive value means use the default.

height - the height of the canvas. A non-positive value means use the default.

CurveEditCanvas

public CurveEditCanvas(int[] data,
                       CurveEditMode cem,
                       int width,
                       int height)

create an edit canvas with a given array of data and a mode for editing it.

Parameters:

data - the integer array to edit

cem - the editing mode to use

width - the width of the canvas. A non-positive value means use the default.

height - the height of the canvas. A non-positive value means use the default.

Method Detail

getPreferredSize

public java.awt.Dimension getPreferredSize()

Overrides:

getPreferredSize in class java.awt.Component

paint

public void paint(java.awt.Graphics g)

Overrides:

paint in class java.awt.Canvas

getCurve

public int[] getCurve()

return the array this canvas is displaying and editing

setMode

public void setMode(CurveEditMode cem)

set the current mode for editing the curve

getMode

public CurveEditMode getMode()

return a reference to the current editing mode

addActionListener

public void addActionListener(java.awt.event.ActionListener l)

removeActionListener

public void removeActionListener(java.awt.event.ActionListener l)

actionPerformed

public void actionPerformed(java.awt.event.ActionEvent ev)

Description copied from interface:

Specified by:

actionPerformed(java.awt.event.ActionEvent) in interface java.awt.event.ActionListener

main

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