//

// JavaGD - Java Graphics Device for R

// JavaGD.java - default GDInterface implementation for use in JavaGD

//

// Copyright (C) 2004-2009 Simon Urbanek

//

// This library is free software; you can redistribute it and/or

// modify it under the terms of the GNU Lesser General Public

// License as published by the Free Software Foundation;

// version 2.1 of the License.

//

// This library is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

// Lesser General Public License for more details.

//

// You should have received a copy of the GNU Lesser General Public

// License along with this library; if not, write to the Free Software

// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

//

package org.rosuda.javaGD;

import java.awt.*;

import java.awt.event.*;

import java.lang.reflect.Method;

/** JavaGD is an implementation of the {@link GDInterface} protocol which displays the R graphics in an AWT window (via {@link 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: {@link GDCanvas} (AWT), {@link JGDPanel} (Swing) and {@link JGDBufferedPanel} (Swing with cached update). */

public class JavaGD extends GDInterface implements WindowListener {

/** frame containing the graphics canvas */

public Frame f;

/** default, public constructor - creates a new JavaGD instance. The actual window (and canvas) is not created until {@link #gdOpen} is called. */

public JavaGD() {

super();

}

/** creates a new graphics window containing a canvas

* @param w width of the canvas

* @param h height of the canvas */

public void gdOpen(double w, double h) {

if (f!=null) gdClose();

f=new Frame("JavaGD");

f.addWindowListener(this);

c=new GDCanvas(w, h);

f.add((GDCanvas)c);

f.pack();

f.setVisible(true);

}

public void gdActivate() {

super.gdActivate();

if (f!=null) {

f.requestFocus();

f.setTitle("JavaGD "+((devNr>0)?("("+(devNr+1)+")"):"")+" *active*");

}

}

public void gdClose() {

super.gdClose();

if (f!=null) {

c=null;

f.removeAll();

f.dispose();

f=null;

}

}

public void gdDeactivate() {

super.gdDeactivate();

if (f!=null) f.setTitle("JavaGD "+((devNr>0)?("("+(devNr+1)+")"):""));

}

public void gdNewPage(int devNr) { // new API: provides the device Nr.

super.gdNewPage(devNr);

if (f!=null) f.setTitle("JavaGD ("+(devNr+1)+")"+(active?" *active*":""));

}

/*-- WindowListener interface methods */

/** listener response to "Close" - effectively invokes <code>dev.off()</code> on the device */

public void windowClosing(WindowEvent e) {

if (c!=null) executeDevOff();

}

public void windowClosed(WindowEvent e) {}

public void windowOpened(WindowEvent e) {}

public void windowIconified(WindowEvent e) {}

public void windowDeiconified(WindowEvent e) {}

public void windowActivated(WindowEvent e) {}

public void windowDeactivated(WindowEvent e) {}

}