nonoz
Messages postés57Date d'inscriptionmercredi 29 janvier 2003StatutMembreDernière intervention23 juin 2004
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8 avril 2004 à 22:43
safisoft
Messages postés489Date d'inscriptionvendredi 30 janvier 2004StatutMembreDernière intervention13 mai 2009
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9 avril 2004 à 13:35
Donc voila j'ai fait un gridbag dans lequel j'ai mis un jpanel et je souhaiterais pouvoir dessine dans ce jpanel.
lorsque je fais ca:
public void paint (g)
{
g.setColor(Color.red);
g.drawOval(50,20,100,100);
}
j'arrive bien a dessiner un cercle mais ca me cache tout le reste.
comment faire pour dessiner dans le jpanle?
merci
package calculatrice;
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import javax.swing.*;
import javax.swing.border.*;
public class appletcalculatrice extends JApplet {
boolean isStandalone = false;
JPanel PanneauPrincipal = new JPanel();
GridBagLayout LayoutPanneauPrincipal = new GridBagLayout();
JButton jButtonPoint = new JButton();
TitledBorder titledBorder1;
JButton jButton1 = new JButton();
JButton jButton0 = new JButton();
JButton jButton2 = new JButton();
JButton jButton3 = new JButton();
JButton jButton4 = new JButton();
JButton jButton5 = new JButton();
JButton jButton6 = new JButton();
JButton jButton7 = new JButton();
JButton jButton8 = new JButton();
JButton jButton9 = new JButton();
JButton jButton10 = new JButton();
JButton jButton11 = new JButton();
JButton jButton12 = new JButton();
JButton jButton13 = new JButton();
JButton jButton14 = new JButton();
JButton jButtonCos = new JButton("cos");
JButton jButtonSin = new JButton("sin");
JButton jButtonTan = new JButton("tan");
JTextField jTextField1 = new JTextField();
JButton jButton15 = new JButton();
JPanel jPanelEcran= new JPanel();
Graphics g = jPanelEcran.getGraphics();
/**Obtenir une valeur de paramètre*/
public String getParameter(String key, String def) {
return isStandalone ? System.getProperty(key, def) :
(getParameter(key) != null ? getParameter(key) : def);
}
/**Construire l'applet*/
public appletcalculatrice() {
}
/**Initialiser l'applet*/
public void init() {
try {
jbInit();
}
catch(Exception e) {
e.printStackTrace();
}
}
/**Initialiser le composant*/
private void jbInit() throws Exception {
titledBorder1 = new TitledBorder("");
this.setSize(new Dimension(400,300));
PanneauPrincipal.setLayout(LayoutPanneauPrincipal);
PanneauPrincipal.setBackground(Color.lightGray);
PanneauPrincipal.setMinimumSize(new Dimension(800, 600));
PanneauPrincipal.setPreferredSize(new Dimension(800, 600));
jButtonPoint.setMaximumSize(new Dimension(41, 27));
jButtonPoint.setMinimumSize(new Dimension(41, 27));
jButtonPoint.setPreferredSize(new Dimension(41, 27));
jButtonPoint.setActionCommand("jButtonPoint");
jButtonPoint.setText(".");
jButton1.setMaximumSize(new Dimension(41, 27));
jButton1.setMinimumSize(new Dimension(41, 27));
jButton1.setPreferredSize(new Dimension(41, 27));
jButton1.setText("1");
jButton0.setMaximumSize(new Dimension(41, 27));
jButton0.setMinimumSize(new Dimension(41, 27));
jButton0.setPreferredSize(new Dimension(41, 27));
jButton0.setText("0");
jButton2.setText("2");
jButton3.setText("3");
jButton4.setText("4");
jButton5.setText("5");
jButton6.setText("6");
jButton7.setText("7");
jButton8.setText("8");
jButton9.setText("9");
jButton10.setBackground(SystemColor.activeCaption);
jButton10.setFont(new java.awt.Font("Dialog", 1, 12));
jButton10.setToolTipText("");
jButton10.setText("EXE");
jButton11.setMaximumSize(new Dimension(41, 27));
jButton11.setMinimumSize(new Dimension(41, 27));
jButton11.setPreferredSize(new Dimension(41, 27));
jButton11.setText("*");
jButton12.setMaximumSize(new Dimension(41, 27));
jButton12.setMinimumSize(new Dimension(41, 27));
jButton12.setPreferredSize(new Dimension(41, 27));
jButton12.setText("/");
jButton13.setText("+");
jButton14.setMaximumSize(new Dimension(41, 27));
jButton14.setMinimumSize(new Dimension(41, 27));
jButton14.setPreferredSize(new Dimension(41, 27));
jButton14.setText("-");
jButtonSin.setPreferredSize(new Dimension(55, 27));
jButtonTan.setPreferredSize(new Dimension(55, 27));
jButton15.setBackground(SystemColor.activeCaption);
jButton15.setFont(new java.awt.Font("Dialog", 1, 12));
jButton15.setPreferredSize(new Dimension(57, 27));
jButton15.setText("ON");
jPanelEcran.setBackground(Color.white);
jPanelEcran.setBorder(BorderFactory.createEtchedBorder());
//g.setColor(Color.red);
//g.drawOval(50,20,100,100);
PanneauPrincipal.add(jButtonPoint, new GridBagConstraints(2, 6, 1, 1, 0.0, 0.0
,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(1, 1, 1, 1), 0, 0));
PanneauPrincipal.add(jButton1, new GridBagConstraints(1, 5, 1, 1, 0.0, 0.0
,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(1, 1, 1, 1), 0, 0));
PanneauPrincipal.add(jButton0, new GridBagConstraints(1, 6, 1, 1, 0.0, 0.0
,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(1, 1, 1, 1), 0, 0));
PanneauPrincipal.add(jButton2, new GridBagConstraints(2, 5, 1, 1, 0.0, 0.0
,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(1, 1, 1, 1), 0, 0));
PanneauPrincipal.add(jButton3, new GridBagConstraints(3, 5, 1, 1, 0.0, 0.0
,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(1, 1, 1, 1), 0, 0));
PanneauPrincipal.add(jButton4, new GridBagConstraints(1, 4, 1, 1, 0.0, 0.0
,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(1, 1, 1, 1), 0, 0));
PanneauPrincipal.add(jButton5, new GridBagConstraints(2, 4, 1, 1, 0.0, 0.0
,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(1, 1, 1, 1), 0, 0));
PanneauPrincipal.add(jButton6, new GridBagConstraints(3, 4, 1, 1, 0.0, 0.0
,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(1, 1, 1, 1), 0, 0));
PanneauPrincipal.add(jButton7, new GridBagConstraints(1, 2, 1, 2, 0.0, 0.0
,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(1, 1, 1, 1), 0, 0));
PanneauPrincipal.add(jButton8, new GridBagConstraints(2, 2, 1, 2, 0.0, 0.0
,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(1, 1, 1, 1), 0, 0));
PanneauPrincipal.add(jButton9, new GridBagConstraints(3, 2, 1, 2, 0.0, 0.0
,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(1, 1, 1, 1), 0, 0));
PanneauPrincipal.add(jButton11, new GridBagConstraints(4, 2, 1, 2, 0.0, 0.0
,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(1, 4, 1, 1), 0, 0));
PanneauPrincipal.add(jButton12, new GridBagConstraints(5, 2, 1, 2, 0.0, 0.0
,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(1, 1, 1, 1), 0, 0));
PanneauPrincipal.add(jButton13, new GridBagConstraints(4, 4, 1, 1, 0.0, 0.0
,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(1, 4, 1, 1), 0, 0));
PanneauPrincipal.add(jButton14, new GridBagConstraints(5, 4, 1, 1, 0.0, 0.0
,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(1, 1, 1, 1), 0, 0));
PanneauPrincipal.add(jButtonSin, new GridBagConstraints(0, 3, 1, 2, 0.0, 0.0
,GridBagConstraints.SOUTH, GridBagConstraints.NONE, new Insets(1, 1, 1, 4), 0, 0));
PanneauPrincipal.add(jButtonCos, new GridBagConstraints(0, 2, 1, 1, 0.0, 0.0
,GridBagConstraints.SOUTHEAST, GridBagConstraints.NONE, new Insets(1, 1, 1, 4), 0, 0));
PanneauPrincipal.add(jButtonTan, new GridBagConstraints(0, 5, 1, 1, 0.0, 0.0
,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(1, 1, 1, 4), 0, 0));
PanneauPrincipal.add(jButton10, new GridBagConstraints(6, 5, 1, 1, 0.0, 0.0
,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(1, 4, 1, 1), 0, 0));
PanneauPrincipal.add(jTextField1, new GridBagConstraints(0, 1, 12, 1, 0.0, 0.0
,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(1, 1, 4, 1), 325, 0));
PanneauPrincipal.add(jButton15, new GridBagConstraints(6, 4, 1, 1, 0.0, 0.0
,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(1, 4, 1, 1), 0, 0));
PanneauPrincipal.add(jPanelEcran, new GridBagConstraints(0, 0, 7, 1, 0.0, 0.0
,GridBagConstraints.SOUTHWEST, GridBagConstraints.NONE, new Insets(1, 1, 4, 1), 328, 66));
this.getContentPane().add(PanneauPrincipal, BorderLayout.CENTER);
}
/**Obtenir les informations d'applet*/
public String getAppletInfo() {
return "Information applet";
}
/**Obtenir les informations de paramètre*/
public String[][] getParameterInfo() {
return null;
}
/* public void paint (g)
{
g.setColor(Color.red);
g.drawOval(50,20,100,100);
}*/
//Initialiseur statique pour le paramètre LookAndFeel
static {
try {
//UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
//UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());
}
catch(Exception e) {
}
}
}
nonoz
Messages postés57Date d'inscriptionmercredi 29 janvier 2003StatutMembreDernière intervention23 juin 2004 8 avril 2004 à 22:44
ah oui j'oubliais quand je mets
g.setColor(Color.red);
g.drawOval(50,20,100,100);
dans le private void jbInit()
j'obtiens l'erreur java.lang.NullPointerException
pourquoi?
remerci
cs_GodConan
Messages postés2113Date d'inscriptionsamedi 8 novembre 2003StatutContributeurDernière intervention 6 octobre 201212 9 avril 2004 à 00:27
GodConan :clown)
c pas la kil faut surcharger paint ;o)
c normal si tu surcharge le paint de l applet sa dessine dessu ;o)
il faut surcharger le paint de ton JPanel ... ;o)