org.fudaa.ebli.graphe.BGrapheInteraction Maven / Gradle / Ivy
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/*
* @creation 2000-06-26
* @modification $Date: 2006-09-19 14:55:45 $
* @license GNU General Public License 2
* @copyright (c)1998-2001 CETMEF 2 bd Gambetta F-60231 Compiegne
* @mail [email protected]
*/
package org.fudaa.ebli.graphe;
import java.awt.Color;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Point;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.text.NumberFormat;
import java.util.Locale;
/**
* Le gestionnaire d'interaction de BGraphe.
*
* @version $Revision: 1.10 $ $Date: 2006-09-19 14:55:45 $ by $Author: deniger $
* @author Axel von Arnim
*/
final class BGrapheInteraction implements MouseListener, MouseMotionListener {
BGraphe bgraphe_;
NumberFormat nf_;
ContexteCoordonnees coordContext_, coordContextP_;
public BGrapheInteraction(final BGraphe _b) {
bgraphe_ = _b;
coordContext_ = null;
coordContextP_ = null;
nf_ = NumberFormat.getInstance(Locale.US);
nf_.setMaximumFractionDigits(2);
nf_.setGroupingUsed(false);
}
@Override
public void mousePressed(final MouseEvent _evt) {
if (coordContext_ == null) {
coordContext_ = new ContexteCoordonnees();
coordContextP_ = new ContexteCoordonnees();
final Graphe g = bgraphe_.getGraphe();
/*coordContextP_.g_ = g;
coordContext_.g_ = g;*/
coordContextP_.courbes_ = g.getElementsParType(new CourbeDefault().getClass());
coordContext_.courbes_ = coordContextP_.courbes_;
coordContextP_.axes_ = g.getElementsParType(new Axe().getClass());
coordContext_.axes_ = coordContextP_.axes_;
coordContextP_.x_ = g.marges_.gauche_;
coordContext_.x_ = coordContextP_.x_;
coordContext_.y_ = g.marges_.haut_;
coordContextP_.y_ = g.marges_.haut_;
coordContextP_.w_ = bgraphe_.getWidth() - g.marges_.gauche_ - g.marges_.droite_;
coordContext_.w_ = coordContextP_.w_;
coordContextP_.h_ = bgraphe_.getHeight() - g.marges_.haut_ - g.marges_.bas_;
coordContext_.h_ = coordContextP_.h_;
// recherche des axes
for (int ia = 0; ia < coordContext_.axes_.length; ia++) {
final Axe a = (Axe) coordContext_.axes_[ia];
if (a.vertical_) {
coordContextP_.ay_ = a;
coordContext_.ay_ = coordContextP_.ay_;
} else {
coordContextP_.ax_ = a;
coordContext_.ax_ = coordContextP_.ax_;
}
}
}
// recherche du point et de la courbe les plus proches
final Point p = _evt.getPoint();
coordContextP_.vs_ = coordContext_.vs_;
coordContextP_.vrs_ = coordContext_.vrs_;
coordContextP_.ivs_ = coordContext_.ivs_;
coordContextP_.cs_ = coordContext_.cs_;
cherchePoint(coordContext_, p);
if ((coordContext_.cs_ == null) || (coordContext_.vs_ == null)) {
return;
}
final Graphics gr = bgraphe_.getGraphics();
gr.setXORMode(bgraphe_.getBackground());
gr.setColor(new Color(255, 0, 0));
if (coordContextP_.vrs_ != null) {
dessinePointCoord(coordContextP_, gr);
}
dessinePointCoord(coordContext_, gr);
}
@Override
public void mouseEntered(final MouseEvent _evt) {}
@Override
public void mouseExited(final MouseEvent _evt) {}
@Override
public void mouseClicked(final MouseEvent _evt) {}
@Override
public void mouseReleased(final MouseEvent _evt) {
if ((coordContext_ != null) && (coordContext_.cs_ != null) && (coordContext_.vs_ != null)) {
final Graphics gr = bgraphe_.getGraphics();
gr.setXORMode(bgraphe_.getBackground());
gr.setColor(new Color(255, 0, 0));
dessinePointCoord(coordContext_, gr);
}
coordContext_ = null;
}
@Override
public void mouseDragged(final MouseEvent _evt) {
// recherche du point et de la courbe les plus proches
final Point p = _evt.getPoint();
coordContextP_.vs_ = coordContext_.vs_;
coordContextP_.vrs_ = coordContext_.vrs_;
coordContextP_.ivs_ = coordContext_.ivs_;
coordContextP_.cs_ = coordContext_.cs_;
cherchePoint(coordContext_, p);
if (coordContext_.ivs_ == coordContextP_.ivs_) {
return;
}
if ((coordContext_.cs_ == null) || (coordContext_.vs_ == null)) {
return;
}
final Graphics gr = bgraphe_.getGraphics();
gr.setXORMode(bgraphe_.getBackground());
gr.setColor(new Color(255, 0, 0));
dessinePointCoord(coordContextP_, gr);
dessinePointCoord(coordContext_, gr);
}
@Override
public void mouseMoved(final MouseEvent _evt) {}
private void cherchePoint(final ContexteCoordonnees _cx, final Point _p) {
double d = Double.POSITIVE_INFINITY, dtmp = 0.;
if (_cx.cs_ == null) {
for (int i = 0; i < _cx.courbes_.length; i++) {
final CourbeDefault c = (CourbeDefault) _cx.courbes_[i];
if (!c.visible_) {
continue;
}
for (int j = 0; j < c.valeurs_.size(); j++) {
final Valeur v = (Valeur) c.valeurs_.get(j);
final Point vr = versEcran(v, _cx);
dtmp = _p.distanceSq(vr.x, vr.y);
if (dtmp < d) {
d = dtmp;
_cx.cs_ = c;
_cx.vs_ = v;
_cx.ivs_ = j;
_cx.vrs_ = vr;
}
}
}
} else {
for (int j = 0; j < _cx.cs_.valeurs_.size(); j++) {
final Valeur v = (Valeur) _cx.cs_.valeurs_.get(j);
final Point vr = versEcran(v, _cx);
dtmp = _p.distanceSq(vr.x, vr.y);
if (dtmp < d) {
d = dtmp;
_cx.vs_ = v;
_cx.ivs_ = j;
_cx.vrs_ = vr;
}
}
}
}
private Point versEcran(final Valeur _v, final ContexteCoordonnees _cx) {
final int yv = _cx.y_ + _cx.h_ - (int) (_cx.h_ * ((_v.v_ - _cx.ay_.minimum_) / (_cx.ay_.maximum_ - _cx.ay_.minimum_)));
final int xv = _cx.x_ + (int) (_cx.w_ * ((_v.s_ - _cx.ax_.minimum_) / (_cx.ax_.maximum_ - _cx.ax_.minimum_)));
return new Point(xv, yv);
}
private void dessinePointCoord(final ContexteCoordonnees _cx, final Graphics _gr) {
Font f = new Font("Dialog", Font.BOLD, 9);
_gr.setFont(f);
FontMetrics fm = _gr.getFontMetrics();
final int dl = 3;
_gr.drawLine(_cx.x_ - 2, _cx.vrs_.y, _cx.vrs_.x - dl, _cx.vrs_.y);
String t = nf_.format(_cx.vs_.v_);
_gr.drawString(t, _cx.x_ - 2 - fm.stringWidth(t), _cx.vrs_.y);
_gr.drawLine(_cx.vrs_.x, _cx.y_ + _cx.h_ + 2, _cx.vrs_.x, _cx.vrs_.y + dl);
t = nf_.format(_cx.vs_.s_);
_gr.drawString(t, _cx.vrs_.x - fm.stringWidth(t) / 2, _cx.y_ + _cx.h_ + 2 + 2 * 10);
_gr.drawArc(_cx.vrs_.x - dl, _cx.vrs_.y - dl, 2 * dl + 1, 2 * dl + 1, 0, 360);
t = "" + (_cx.ivs_ + 1);
f = new Font(f.getName(), f.getStyle(), 14);
_gr.setFont(f);
fm = _gr.getFontMetrics();
_gr.drawString(t, _cx.vrs_.x - fm.stringWidth(t) / 2, _cx.vrs_.y - dl - 1);
}
static class ContexteCoordonnees {
// Graphe g_;
Object[] axes_;
Object[] courbes_;
int x_;
int y_;
int w_;
int h_;
Axe ax_;
Axe ay_;
Valeur vs_;
int ivs_;
Point vrs_;
CourbeDefault cs_;
}
}
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