Вот что у меня есть, я попытался создать функцию draw, чтобы проверить, будет ли это работать. Палитра просто еще один графический интерфейс окна, который будет иметь варианты цвета, как только я понять эту проблему экономии сначалаЯ делаю простую программу рисования в java, я могу рисовать, но когда я сворачиваю окно или изменяю размер, то, что я писал, уходит. Как мне заставить их остаться?
import csc260final.Palette;
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import javax.swing.JOptionPane;
/**
*
* @author Jared Hughes
*/
public class Canvas extends javax.swing.JFrame {
/**
* Creates new form Canvas
*/
Draw line;
private int curX, curY, oldX, oldY;
public Graphics2D g2;
Palette palette;
public Canvas() {
initComponents();
palette = new Palette();
palette.setVisible(true);
}
public void draw(){
g2 = (Graphics2D) jPanel1.getGraphics();
g2.setColor(Color.yellow);
g2.setStroke(new BasicStroke(10));
g2.drawLine(oldX, oldY, curX, curY);
}
public void paint(Graphics g){
Graphics2D g2 = (Graphics2D)g;
super.paint(g);
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jPanel1 = new javax.swing.JPanel();
jButton1 = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jPanel1.setBackground(new java.awt.Color(255, 255, 255));
jPanel1.setPreferredSize(new java.awt.Dimension(1130, 550));
jPanel1.setRequestFocusEnabled(false);
jPanel1.addMouseMotionListener(new java.awt.event.MouseMotionAdapter() {
public void mouseDragged(java.awt.event.MouseEvent evt) {
jPanel1MouseDragged(evt);
}
public void mouseMoved(java.awt.event.MouseEvent evt) {
jPanel1MouseMoved(evt);
}
});
jPanel1.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
jPanel1MouseClicked(evt);
}
public void mouseEntered(java.awt.event.MouseEvent evt) {
jPanel1MouseEntered(evt);
}
public void mouseExited(java.awt.event.MouseEvent evt) {
jPanel1MouseExited(evt);
}
public void mousePressed(java.awt.event.MouseEvent evt) {
jPanel1MousePressed(evt);
}
public void mouseReleased(java.awt.event.MouseEvent evt) {
jPanel1MouseReleased(evt);
}
});
javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 1130, Short.MAX_VALUE)
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 550, Short.MAX_VALUE)
);
jButton1.setText("jButton1");
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jButton1)
.addGap(94, 94, 94))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 28, Short.MAX_VALUE)
.addComponent(jButton1)
.addContainerGap())
);
pack();
}// </editor-fold>
private void jPanel1MousePressed(java.awt.event.MouseEvent evt) {
// TODO add your handling code here:
// save x and y when mouse is pressed
curX = evt.getX();
curY = evt.getY();
oldX = curX;
oldY = curY;
}
private void jPanel1MouseDragged(java.awt.event.MouseEvent evt) {
// TODO add your handling code here:
// get x and y when mouse is dragged
curX = evt.getX();
curY = evt.getY();
g2 = (Graphics2D) jPanel1.getGraphics();
g2.setColor(Color.yellow);
g2.setStroke(new BasicStroke(10));
g2.drawLine(oldX, oldY, curX, curY);
oldX = curX;
oldY = curY;
}
private void jPanel1MouseClicked(java.awt.event.MouseEvent evt) {
// TODO add your handling code here:
}
private void jPanel1MouseEntered(java.awt.event.MouseEvent evt) {
// TODO add your handling code here:
}
private void jPanel1MouseMoved(java.awt.event.MouseEvent evt) {
// TODO add your handling code here:
}
private void jPanel1MouseExited(java.awt.event.MouseEvent evt) {
// TODO add your handling code here:
}
private void jPanel1MouseReleased(java.awt.event.MouseEvent evt) {
// TODO add your handling code here:
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(Canvas.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(Canvas.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(Canvas.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(Canvas.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new Canvas().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JPanel jPanel1;
// End of variables declaration
}
'Я могу рисовать, но когда я свернуть окно или изменить то, что я нарисовал идет away.' См [Пользовательские Живопись подходы] (https://tips4java.wordpress.com/2009/05/08/подгонки под заказ /) для двух подходов. – camickr