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|
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class graphe extends JComponent implements MouseListener,ActionListener{
static JFrame jf;
static somet[] tab;
static int nb_sommets=0;
static int sometselect=-1;
static boolean creationarc,supprimerarc=false;
static int dep,arr;//pour creer ou supprimer des arcs
Component compselect=null;
JMenuBar mbar;
JPopupMenu popupsomet;
JPopupMenu popupgraphe;
protected JTextField textfield;
protected int xCurseur;
protected int yCurseur;
public static void main(String[] args) {
new graphe();
}
public graphe(){
jf=new JFrame();
tab=new somet[100];
setBackground(Color.white);
setName("fond");
setLayout(null);
setSize(600,600);
setVisible(true);
addMouseListener(this);
mbar = new JMenuBar();
popupsomet = new JPopupMenu("?");popupsomet.setBorderPainted(true);popupsomet.setBackground(Color.red);popupsomet.setOpaque(true);
popupgraphe = new JPopupMenu("??");popupgraphe.setBackground(Color.gray);popupgraphe.setOpaque(true);
textfield = new JTextField(30);
//JScrollPane jsPane = new JScrollPane(textfield);
mbar.add (makeMenuItem ("Creer nouveau sommet?") );
mbar.add (makeMenuItem ("effacer tout?") );
mbar.add(textfield);
popupsomet.add (makeMenuItem ("Renommer") );
popupsomet.add (makeMenuItem ("creer un arc partant de ce somet?") );
popupsomet.add (makeMenuItem ("Supprimer ce sommet") );
popupsomet.add (makeMenuItem ("Supprimer un arc partant de ce sommet") );
popupsomet.add (makeMenuItem ("..") );
popupsomet.add (makeMenuItem (".") );
popupgraphe.add(makeMenuItem ("Creer nouveau sommet?") );
popupgraphe.add (makeMenuItem ("..") );
jf.setJMenuBar(mbar);
jf.setVisible(true);jf.add(this);
}
private JMenuItem makeMenuItem (String s) {
JMenuItem item = new JMenuItem (s);
item.addActionListener ( this );
return item;
}
public void saisie_suc(int dep, int arr, int cout) {
int i = 0;
//int k = this.rech_indice(dep);
while (tab[dep].liste_succ[i][0] >=0) {
i = i + 1;
}
tab[dep].liste_succ[i][0] = arr;
tab[dep].liste_succ[i][1] = cout;
}
public void paintComponent(Graphics g){
for (int i = 0; i < nb_sommets; i++) {
if (tab[i]!= null) {
int j = 0;
while (tab[i].liste_succ[j][0] >=0) {
//String s = tab[i].acces_liste_succ()[j][0];
//int k = this.rech_indice(s);
this.drawArrow(tab[i].getX() +25, tab[i].getY() +25,
tab[tab[i].liste_succ[j][0]].getX()+25 , tab[tab[i].liste_succ[j][0]].getY()+25 , g);
j = j + 1;
}
}
}
repaint();
}
public void mouseClicked(MouseEvent e) {
// TODO Auto-generated method stub
}
public void mouseEntered(MouseEvent e) {
// TODO Auto-generated method stub
}
public void mouseExited(MouseEvent e) {
// TODO Auto-generated method stub
}
public void mousePressed(MouseEvent e){
xCurseur=e.getX();
yCurseur=e.getY();
if(e.getButton()==MouseEvent.BUTTON3 ){
popupgraphe.setVisible(true);
popupgraphe.show (e.getComponent(), e.getX (), e.getY ());
}
repaint();
}
public void mousePressed2(MouseEvent e) {
compselect=e.getComponent();
if(e.getComponent().getClass().getName().equals("somet")){
sometselect=((somet) e.getComponent()).indice;
System.out.println(((somet)e.getComponent()).indice);
}
System.out.println(e.getComponent().getName());
if(e.getButton()==MouseEvent.BUTTON3 ){
popupsomet.setVisible(true);
popupsomet.show (e.getComponent(), e.getX (), e.getY ());
}
if (creationarc){
String cout = JOptionPane.showInputDialog("quel coût?","0");
int cc=0;
try{
cc=Integer.parseInt(cout);
}catch( NumberFormatException nfe){
textfield.setText("entrez un coût entier svp");
}
saisie_suc(dep,sometselect,cc);
creationarc=false;
}
if (supprimerarc){
tab[dep].liste_succ[sometselect][0]=-1;
tab[dep].liste_succ[sometselect][1]=-1;
supprimerarc=false;
}
repaint();
}
public void mouseReleased(MouseEvent e) {
}
public void actionPerformed(ActionEvent e) {
String s = e.getActionCommand ();
if(s.equals("Creer nouveau sommet?")){
int i=0;
while (tab[i] != null) {
i++;
}
System.out.println(i +".."+nb_sommets);
if (i>=nb_sommets){
tab[i]=new somet (xCurseur,yCurseur,this,this);
nb_sommets++;
tab[i].indice=i;
}
else {
tab[i] = new somet (xCurseur,yCurseur,this,this);
tab[i].indice=i;
}
}
if (s.equals ("Renommer") ){
String ans = JOptionPane.showInputDialog("nouveau nom?",compselect.getName());
compselect.setName(ans);
}
if (s.equals ("creer un arc partant de ce somet?") ){
dep=sometselect;creationarc=!creationarc;
}
if (s.equals ("Supprimer un arc partant de ce sommet") ){
dep=sometselect;supprimerarc=!supprimerarc;
}
if (s.equals ("Supprimer ce sommet") ){
//Visible=false;
if (compselect.getClass().getName().equals("somet") ){
remove(compselect);//compselect=null;
}
}
if (s.equals ("Blue"))
setBackground (Color.blue);
else
setBackground (Color.white);
repaint();
}
private void drawArrow(int x1, int y1, int x2, int y2, Graphics g) {
g.drawPolygon(getArrow(x1, y1, x2, y2, 10, 5, 0.5));
}
private Polygon getArrow(int x1, int y1, int x2, int y2, int headsize,
int difference, double factor) {
int[] crosslinebase = getArrowHeadLine(x1, y1, x2, y2, headsize);
int[] headbase = getArrowHeadLine(x1, y1, x2, y2, headsize - difference);
int[] crossline = getArrowHeadCrossLine(crosslinebase[0],
crosslinebase[1], x2, y2, factor);
Polygon head = new Polygon();
head.addPoint(headbase[0], headbase[1]);
head.addPoint(crossline[0], crossline[1]);
head.addPoint(x2, y2);
head.addPoint(crossline[2], crossline[3]);
head.addPoint(headbase[0], headbase[1]);
head.addPoint(x1, y1);
return head;
}
private int[] getArrowHeadLine(int xsource, int ysource, int xdest,
int ydest, int distance) {
int[] arrowhead = new int[2];
int headsize = distance;
double stretchfactor = 0;
stretchfactor = 1 - (headsize / (Math
.sqrt(((xdest - xsource) * (xdest - xsource))
+ ((ydest - ysource) * (ydest - ysource)))));
arrowhead[0] = (int) (stretchfactor * (xdest - xsource)) + xsource;
arrowhead[1] = (int) (stretchfactor * (ydest - ysource)) + ysource;
return arrowhead;
}
private int[] getArrowHeadCrossLine(int x1, int x2, int b1, int b2,
double factor) {
int[] crossline = new int[4];
int x_dest = (int) (((b1 - x1) * factor) + x1);
int y_dest = (int) (((b2 - x2) * factor) + x2);
crossline[0] = (int) ((x1 + x2 - y_dest));
crossline[1] = (int) ((x2 + x_dest - x1));
crossline[2] = crossline[0] + (x1 - crossline[0]) * 2;
crossline[3] = crossline[1] + (x2 - crossline[1]) * 2;
return crossline;
}
} |
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