ucb.gui

Class Pad

java.lang.Object

ucb.gui.Widget

ucb.gui.Pad

public class Pad
extends Widget

A Pad is a blank slate that may be inserted into a TopLevel. It provides methods that set up responses to mouse events, and an overrideable paintComponent method that allows one to draw anything that may be rendered on a standard Java Graphics2D. Standard usage is to extend Pad, and to call most of its methods from methods in the extended class.

Field Summary

Fields inherited from class ucb.gui.Widget

me

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Pad()

Method Summary

Methods

Modifier and Type	Method and Description
int	getHeight() My current height in pixels.
int	getWidth() My current width in pixels.
protected void	paintComponent(Graphics2D g) Repaint myself on G.
void	repaint() Alert the system that I ought be asked to repaint myself.
void	repaint(int x, int y, int width, int height) Alert the system that I ought be asked to repaint the rectangular area whose top left corner is X, Y and has given WIDTH and HEIGHT.
void	repaint(long tm) Alert the system that I ought be asked to repaint myself within TM milliseconds.
void	repaint(long tm, int x, int y, int width, int height) Alert the system that I ought be asked to repaint the rectangular area whose top left corner is X, Y and has given WIDTH and HEIGHT within TM milliseconds.
protected void	setKeyHandler(String event, Object receiver, String funcName)
protected void	setKeyHandler(String event, String funcName)
protected void	setMaximumSize(int width, int height) Set my maximum size to WIDTHxHEIGHT pixels.
protected void	setMinimumSize(int width, int height) Set my minimum size to WIDTHxHEIGHT pixels.
protected void	setMouseHandler(String event, Object receiver, String funcName) Handle the mouse event EVENT by calling the FUNCNAME method on RECEIVER with the MouseEvent that describes the event.
protected void	setMouseHandler(String event, String funcName)
protected void	setPreferredSize(int width, int height) Set my preferred size to WIDTHxHEIGHT pixels.
protected void	setSize(int width, int height) Set my current size to WIDTHxHEIGHT pixels.

Methods inherited from class ucb.gui.Widget

requestFocusInWindow

Methods inherited from class java.lang.Object

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

Constructor Detail

Pad

protected Pad()

Method Detail

setSize

protected void setSize(int width,
           int height)

Set my current size to WIDTHxHEIGHT pixels.

setPreferredSize

protected void setPreferredSize(int width,
                    int height)

Set my preferred size to WIDTHxHEIGHT pixels.

setMinimumSize

protected void setMinimumSize(int width,
                  int height)

Set my minimum size to WIDTHxHEIGHT pixels.

setMaximumSize

protected void setMaximumSize(int width,
                  int height)

Set my maximum size to WIDTHxHEIGHT pixels.

getWidth

public int getWidth()

My current width in pixels.

getHeight

public int getHeight()

My current height in pixels.

repaint

public void repaint()

Alert the system that I ought be asked to repaint myself.

repaint

public void repaint(long tm)

Alert the system that I ought be asked to repaint myself within TM milliseconds.

repaint

public void repaint(int x,
           int y,
           int width,
           int height)

Alert the system that I ought be asked to repaint the rectangular area whose top left corner is X, Y and has given WIDTH and HEIGHT.

repaint

public void repaint(long tm,
           int x,
           int y,
           int width,
           int height)

Alert the system that I ought be asked to repaint the rectangular area whose top left corner is X, Y and has given WIDTH and HEIGHT within TM milliseconds.

setMouseHandler

protected void setMouseHandler(String event,
                   Object receiver,
                   String funcName)

Handle the mouse event EVENT by calling the FUNCNAME method on RECEIVER with the MouseEvent that describes the event. FUNCNAME must be a declared method of RECEIVER that takes a single MouseEvent argument. The default handling of any event is to ignore it. The possible values of EVENT are:

• "click": A mouse button is clicked (possibly multiple times).
• "press": A mouse button is pressed. z *
• "release": A mouse button is released.
• "enter": The mouse enters this Pad.
• "exit": The mouse exits this Pad.
• "drag": The mouse dragged (moved while a button is pressed).
• "move": The mouse moves.
• "press": A key is pressed.
• "release": A key is released.
• "type": A key is typed.

See Also:

MouseEvent

setMouseHandler

protected void setMouseHandler(String event,
                   String funcName)

setKeyHandler

protected void setKeyHandler(String event,
                 Object receiver,
                 String funcName)

setKeyHandler

protected void setKeyHandler(String event,
                 String funcName)

paintComponent

protected void paintComponent(Graphics2D g)

Repaint myself on G. This default implementation does nothing.