org.rosuda.javaGD
Class JavaGD

java.lang.Object
  org.rosuda.javaGD.GDInterface
      org.rosuda.javaGD.JavaGD

All Implemented Interfaces:

java.awt.event.WindowListener, java.util.EventListener

public class JavaGD
extends GDInterface
implements java.awt.event.WindowListener

JavaGD is an implementation of the GDInterface protocol which displays the R graphics in an AWT window (via GDCanvas). It can be used as an example gfor implementing custom display classes which can then be used by JavaGD. Three sample back-ends are included in the JavaGD sources: GDCanvas (AWT), JGDPanel (Swing) and JGDBufferedPanel (Swing with cached update).

Field Summary

java.awt.Frame

f frame containing the graphics canvas

Fields inherited from class org.rosuda.javaGD.GDInterface

active, c, holding, ls, open

Constructor Summary

JavaGD()
default, public constructor - creates a new JavaGD instance.

Method Summary

void	gdActivate() the device became active (current)
void	gdClose() close the display
void	gdDeactivate() the device became inactive (i.e. another device is now current)
void	gdNewPage(int devNr) create a new, blank page
void	gdOpen(double w, double h) creates a new graphics window containing a canvas
void	windowActivated(java.awt.event.WindowEvent e)
void	windowClosed(java.awt.event.WindowEvent e)
void	windowClosing(java.awt.event.WindowEvent e) listener response to "Close" - effectively invokes dev.off() on the device
void	windowDeactivated(java.awt.event.WindowEvent e)
void	windowDeiconified(java.awt.event.WindowEvent e)
void	windowIconified(java.awt.event.WindowEvent e)
void	windowOpened(java.awt.event.WindowEvent e)

Methods inherited from class org.rosuda.javaGD.GDInterface

executeDevOff, gdCircle, gdClip, gdcSetColor, gdcSetFill, gdcSetFont, gdcSetLine, gdFlush, gdHold, gdLine, gdLocator, gdMetricInfo, gdMode, gdNewPage, gdPath, gdPolygon, gdPolyline, gdRaster, gdRect, gdSize, gdStrWidth, gdText, getDeviceNumber

Methods inherited from class java.lang.Object

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

Field Detail

f

public java.awt.Frame f

frame containing the graphics canvas

Constructor Detail

JavaGD

public JavaGD()

default, public constructor - creates a new JavaGD instance. The actual window (and canvas) is not created until gdOpen(double, double) is called.

Method Detail

gdOpen

public void gdOpen(double w,
                   double h)

creates a new graphics window containing a canvas

Overrides:

gdOpen in class GDInterface

Parameters:

w - width of the canvas

h - height of the canvas

gdActivate

public void gdActivate()

Description copied from class: GDInterface

the device became active (current)

Overrides:

gdActivate in class GDInterface

gdClose

public void gdClose()

Description copied from class: GDInterface

close the display

Overrides:

gdClose in class GDInterface

gdDeactivate

public void gdDeactivate()

Description copied from class: GDInterface

the device became inactive (i.e. another device is now current)

Overrides:

gdDeactivate in class GDInterface

gdNewPage

public void gdNewPage(int devNr)

Description copied from class: GDInterface

create a new, blank page

Overrides:

gdNewPage in class GDInterface

Parameters:

devNr - device number assigned to this device by R

windowClosing

public void windowClosing(java.awt.event.WindowEvent e)

listener response to "Close" - effectively invokes dev.off() on the device

Specified by:

windowClosing in interface java.awt.event.WindowListener

windowClosed

public void windowClosed(java.awt.event.WindowEvent e)

Specified by:

windowClosed in interface java.awt.event.WindowListener

windowOpened

public void windowOpened(java.awt.event.WindowEvent e)

Specified by:

windowOpened in interface java.awt.event.WindowListener

windowIconified

public void windowIconified(java.awt.event.WindowEvent e)

Specified by:

windowIconified in interface java.awt.event.WindowListener

windowDeiconified

public void windowDeiconified(java.awt.event.WindowEvent e)

Specified by:

windowDeiconified in interface java.awt.event.WindowListener

windowActivated

public void windowActivated(java.awt.event.WindowEvent e)

Specified by:

windowActivated in interface java.awt.event.WindowListener

windowDeactivated

public void windowDeactivated(java.awt.event.WindowEvent e)

Specified by:

windowDeactivated in interface java.awt.event.WindowListener