/*
* Copyright (C) 2011, Laboratorio di Valutazione delle Prestazioni - Politecnico di Milano
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
* This program 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 General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package jmt.gui.jaba.graphs;
import java.awt.Component;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Point;
import java.awt.event.ActionEvent;
import java.awt.event.MouseEvent;
import javax.swing.AbstractAction;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JPopupMenu;
import jmt.engine.jaba.DPoint;
import org.freehep.util.export.ExportDialog;
/**
* @author Sebastiano Spicuglia
*/
public abstract class JabaGraph extends JPanel {
private static final long serialVersionUID = 1L;
private static final float MIN_SCALE = 0.25f;
private static final float MAX_SCALE = 5f;
// Popup menu
protected PlotPopupMenu popup = new PlotPopupMenu();
// Value of the current zoom
private float currentScale = 1;
private int yTranslation;
private int xTranslation;
protected Point zoomStartPoint;
public JabaGraph() {
}
public void paint(Graphics g) {
super.paint(g);
Graphics2D g2;
g2 = (Graphics2D) g;
g2.scale(currentScale, currentScale);
g2.translate(-xTranslation, -yTranslation);
}
public void rightClick(MouseEvent ev) {
popup.show(this, ev.getX(), ev.getY());
}
public void zoom(float perc, boolean restore) {
if (!restore) {
currentScale += perc;
if (currentScale <= MIN_SCALE) {
popup.zoomOut.setEnabled(false);
currentScale = MIN_SCALE;
} else {
popup.zoomOut.setEnabled(true);
}
if (currentScale >= MAX_SCALE) {
popup.zoomIn.setEnabled(false);
currentScale = MAX_SCALE;
} else {
popup.zoomIn.setEnabled(true);
}
} else {
currentScale = 1;
popup.zoomOut.setEnabled(true);
popup.zoomIn.setEnabled(true);
}
if (this.getParent() instanceof JabaCanvas) {
JabaCanvas c = (JabaCanvas) this.getParent();
c.notifyNewSize(this.getWidth() * currentScale, this.getHeight()
* currentScale);
}
repaint();
}
public void translateX(int value) {
this.xTranslation = value;
this.repaint();
}
public void translateY(int value) {
this.yTranslation = value;
this.repaint();
}
public DPoint adjustMousePoint(int x, int y) {
return new DPoint(x / currentScale + xTranslation, y / currentScale
+ yTranslation);
}
public Point adjustMousePoint2(int x, int y) {
Point res = new Point();
res.x = (int) (x / currentScale + xTranslation);
res.y = (int) (y / currentScale + yTranslation);
return res;
}
public Point adjustMousePoint(Point p) {
Point res = new Point();
res.x = (int) (p.x / currentScale + xTranslation);
res.y = (int) (p.y / currentScale + yTranslation);
return res;
}
// --- Methods for popup menu
// -------------------------------------------------------------
/**
* A simple JPopupMenu used to manage operations on plot. It gives the
* choice to zoom in and out on the plot, restore original view and save
* plot to images (in EPS or PNG format)
*/
protected class PlotPopupMenu extends JPopupMenu {
/**
*
*/
private static final long serialVersionUID = 1L;
public JMenuItem restore;
public JMenuItem zoomIn;
public JMenuItem zoomOut;
public JMenuItem saveAs;
public PlotPopupMenu() {
restore = new JMenuItem("Original view");
zoomIn = new JMenuItem("Zoom in");
zoomOut = new JMenuItem("Zoom out");
saveAs = new JMenuItem("Save as...");
this.add(restore);
this.add(zoomIn);
this.add(zoomOut);
this.addSeparator();
this.add(saveAs);
addListeners();
}
public void addListeners() {
restore.addActionListener(new AbstractAction() {
private static final long serialVersionUID = 1L;
public void actionPerformed(ActionEvent e) {
zoom(1, true);
}
});
zoomIn.addActionListener(new AbstractAction() {
private static final long serialVersionUID = 1L;
public void actionPerformed(ActionEvent e) {
zoom(0.25f, false);
}
});
zoomOut.addActionListener(new AbstractAction() {
private static final long serialVersionUID = 1L;
public void actionPerformed(ActionEvent e) {
zoom(-0.25f, false);
}
});
saveAs.addActionListener(new AbstractAction() {
private static final long serialVersionUID = 1L;
public void actionPerformed(ActionEvent e) {
ExportDialog export = new ExportDialog();
export.showExportDialog((Component) JabaGraph.this,
"Export view as ...", (Component) JabaGraph.this,
"Export");
}
});
}
}
}