Class Scroller

Class Scroller 

java.lang.Object
   |
   +----java.awt.Component
           |
           +----java.awt.Container
                   |
                   +----java.awt.Panel
                           |
                           +----Scroller
public class Scroller
extends Panel
Each Scroller contains a Panel (viewport) and two Scrollbars (horizontal and vertical). Works in conjunction with a ScrollerLayout, that lays out the viewport and two scrollbars.

Subclasses must override:

abstract public void scrollTo(int x, int y)
abstract public Dimension getScrollAreaSize()
Version:
1.0, Apr 1 1996
Author:
David Geary
See Also:
ComponentScroller, ImageScroller, ScrollerLayout, ComponentScrollerTest, ImageScrollerTest

Variable Index

o hbar
o vbar
o viewport

Constructor Index

o Scroller()

Method Index

o getHorizontalScrollbar()
o getScrollAreaSize()
o getVerticalScrollbar()
o getViewport()
o handleEvent(Event)
o manageHorizontalScrollbar()
o manageScrollbars()
o manageVerticalScrollbar()
o paint(Graphics)
o scroll()
o scrollAbsolute(Event)
o scrollLineDown(Event)
o scrollLineUp(Event)
o scrollPageDown(Event)
o scrollPageUp(Event)
o scrollTo(int, int)
o setHorizontalLineAndPageIncrements()
o setHorizontalScrollbarValues()
o setScrollbarValues()
o setVerticalLineAndPageIncrements()
o setVerticalScrollbarValues()
o update(Graphics)

Variables

o viewport 
  protected Panel viewport
o hbar 
  protected Scrollbar hbar
o vbar 
  protected Scrollbar vbar

Constructors

o Scroller 
  public Scroller()

Methods

o scrollTo 
  public abstract void scrollTo(int x,
                                int y)
o getScrollAreaSize 
  public abstract Dimension getScrollAreaSize()
o getHorizontalScrollbar 
  public Scrollbar getHorizontalScrollbar()
o getVerticalScrollbar 
  public Scrollbar getVerticalScrollbar()
o getViewport 
  public Panel getViewport()
o handleEvent 
  public boolean handleEvent(Event event)
Overrides:
handleEvent in class Component
o paint 
  public void paint(Graphics g)
Overrides:
paint in class Component
o update 
  public void update(Graphics g)
Overrides:
update in class Component
o manageScrollbars 
  public void manageScrollbars()
o manageHorizontalScrollbar 
  protected void manageHorizontalScrollbar()
o manageVerticalScrollbar 
  protected void manageVerticalScrollbar()
o setScrollbarValues 
  public void setScrollbarValues()
o setHorizontalScrollbarValues 
  protected void setHorizontalScrollbarValues()
o setVerticalScrollbarValues 
  protected void setVerticalScrollbarValues()
o scrollLineUp 
  protected void scrollLineUp(Event event)
o scrollLineDown 
  protected void scrollLineDown(Event event)
o scrollPageUp 
  protected void scrollPageUp(Event event)
o scrollPageDown 
  protected void scrollPageDown(Event event)
o scrollAbsolute 
  protected void scrollAbsolute(Event event)
o setHorizontalLineAndPageIncrements 
  protected void setHorizontalLineAndPageIncrements()
o setVerticalLineAndPageIncrements 
  protected void setVerticalLineAndPageIncrements()
o scroll 
  protected void scroll()