edu.umd.cs.piccolox.swing
Interface PScrollDirector

All Known Implementing Classes:

PDefaultScrollDirector

public interface PScrollDirector

The interface an application can implement to control scrolling in a PScrollPane->PViewport->ZCanvas component hierarchy.

Author:

Lance Good

See Also:

PDefaultScrollDirector

Method Summary

java.awt.Point	getViewPosition(java.awt.geom.Rectangle2D viewBounds) Get the View position given the specified camera bounds
java.awt.Dimension	getViewSize(java.awt.geom.Rectangle2D viewBounds) Get the size of the view based on the specified camera bounds
void	install(PViewport viewport, PCanvas view) Installs the scroll director
void	setViewPosition(double x, double y) Set the view position
void	unInstall() Uninstall the scroll director

Method Detail

install

void install(PViewport viewport,
             PCanvas view)

Installs the scroll director

Parameters:

viewport - The viewport on which this director directs

view - The ZCanvas that the viewport looks at

unInstall

void unInstall()

Uninstall the scroll director

getViewPosition

java.awt.Point getViewPosition(java.awt.geom.Rectangle2D viewBounds)

Get the View position given the specified camera bounds

Parameters:

viewBounds - The bounds for which the view position will be computed

Returns:

The view position

setViewPosition

void setViewPosition(double x,
                     double y)

Set the view position

Parameters:

x - The new x position

y - The new y position

getViewSize

java.awt.Dimension getViewSize(java.awt.geom.Rectangle2D viewBounds)

Get the size of the view based on the specified camera bounds

Parameters:

viewBounds - The view bounds for which the view size will be computed

Returns:

The view size