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Class ncsa.horizon.awt.ScrollingPanel

java.lang.Object
   |
   +----java.awt.Component
           |
           +----java.awt.Container
                   |
                   +----java.awt.Panel
                           |
                           +----ncsa.horizon.awt.ScrollingPanel

public class ScrollingPanel

extends Panel

ScrollingPanel()

Create a separate panel based on the image canvas.

ScrollingPanel(Image)

Create a separate panel based on the image canvas.

ScrollingPanel(int, int)

Create a separate panel based on the image canvas.

action(Event, Object)

Called if an action occurs in the Component

handleEvent(Event)

Handles the event.

imageUpdate(Image, int, int, int, int, int)

minimumSize()

preferredSize()

reshape(int, int, int, int)

resize(Dimension)

resize(int, int)

All sizing methods are overridden as debugging aids.

setImage(Image)

Set the image to be displayed on the panel.

  public ScrollingPanel(Image image)

Create a separate panel based on the image canvas. This panel will contain the image canvas and scrollbars

  public ScrollingPanel()

Create a separate panel based on the image canvas. This panel will contain the image canvas and scrollbars

  public ScrollingPanel(int width,
                        int height)

Create a separate panel based on the image canvas. This panel will contain the image canvas and scrollbars

  public void setImage(Image image)

Set the image to be displayed on the panel.

Parameters:

java.awt.Image - The image object to display

  public boolean imageUpdate(Image img,
                             int infoflags,
                             int x,
                             int y,
                             int width,
                             int height)

Overrides:

imageUpdate in class Component

  public boolean handleEvent(Event evt)

Handles the event. Returns true if the event is handled and should not be passed to the parent of this component. The default event handler calls some helper methods to make life easier on the programmer.

Parameters:

evt - the event

Overrides:

handleEvent in class Component

See Also:

handleEvent

  public boolean action(Event evt,
                        Object arg)

Called if an action occurs in the Component

Parameters:

evt - the event

arg - the action that's occuring

Overrides:

action in class Component

See Also:

action

  public void resize(int width,
                     int height)

All sizing methods are overridden as debugging aids.

Overrides:

resize in class Component

  public void resize(Dimension d)

Overrides:

resize in class Component

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

Overrides:

reshape in class Component

  public Dimension minimumSize()

Overrides:

minimumSize in class Container

  public Dimension preferredSize()

Overrides:

preferredSize in class Container

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