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How to set size for custom-made panel that will work with gridbaglayout?

this is my problem, I hope you will help me somehow. I have one class that extends JPanel, and that class is creating a rectangle with a paintComponent method. When I add that class to JPanel who has gridBagLayout,first is not appearing. But, when I set Dimension.getPreferredSize() in that class, I can see the rectangle...and the problem is when I call MouseListener and see that rectangle is only moving in little square in the frame. So I think that somehow that method getPreferredSize() is controlling the place where will rectangle move and be.
Here is pic of my problem:
move3
limitet showing/moving4
Here is code:
Main:
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class PrikazGUI {
JFrame frejm;
JPanel k;
JButton b1,b2;
public PrikazGUI(){
frejm = new JFrame("Lala");
k = new JPanel();
k.setLayout(new GridBagLayout());
Kvadrat l = new Kvadrat();
JPanel a = new JPanel();
a.add(l);
k.add(a);
frejm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frejm.setSize(1900, 1000);
frejm.getContentPane().add(k);
frejm.setVisible(true);
}
public static void main(String[] args) {
PrikazGUI a = new PrikazGUI();
}
Second class:
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import javax.swing.JPanel;
public class KvadratPravi extends JPanel {
int sizeH = 60;
int sizeW = 60;
#Override
protected void paintComponent(Graphics g) {
// TODO Auto-generated method stub
super.paintComponent(g);
g.setColor(Color.PINK);
g.drawRect(0, 0, sizeH, sizeW);
g.fillRect(0, 0, sizeH, sizeW);
}
#Override
public Dimension getPreferredSize() {
return new Dimension(sizeH,sizeW);
}
}
Third class:
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Point;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionAdapter;
import javax.swing.JButton;
import javax.swing.JPanel;
public class Kvadrat extends JPanel {
JButton b1,b2;
JPanel panel;
KvadratPravi s1 = new KvadratPravi();
int x,y;
public Kvadrat(){
GridBagConstraints cst = new GridBagConstraints();
panel = new JPanel();
panel.setLayout(new GridBagLayout());
final KvadratPravi s = new KvadratPravi();
cst.gridx = 0;
cst.gridy = 0;
s.setPreferredSize(new Dimension(40,40));
s.setBounds(0, 0, 400, 400);
panel.add(s,cst);
JosJedanKvadrat j = new JosJedanKvadrat();
j.setPreferredSize(new Dimension(40,40));
j.setBounds(0, 0, 400, 400);
cst.gridx = 0;
cst.gridy = 4;
panel.add(j,cst);
s.setPreferredSize(new Dimension(400,400));
s.setBounds(400, 400, 400, 1000);
s.addMouseListener(new MouseAdapter() {
public void mousePressed(MouseEvent e) {
if(!e.isMetaDown()){
x = e.getX();
y = e.getY();
}
}
});
s.addMouseMotionListener(new MouseMotionAdapter() {
public void mouseDragged(MouseEvent e) {
if(!e.isMetaDown()){
Point p = s.getLocation();
s.setLocation(p.x + e.getX() - x,
p.y + e.getY() - y);
}
}
});
cst.gridx = 2;
cst.gridy =4;
panel.add(s1,cst);
JPanel k = new JPanel();
k.add(panel);
add(k);
}
}
Fourth class:
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import javax.swing.JPanel;
public class JosJedanKvadrat extends JPanel {
int sizeH = 60;
int sizeW = 60;
#Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
g.setColor(Color.BLUE);
g.drawOval(0, 0, sizeH, sizeW);
}
#Override
public Dimension getPreferredSize() {
return new Dimension(sizeH,sizeW);
}
}

GUI Application that allows the user to choose the shape and color of a drawing

I need to create a program that allows the user to select a color from a list of checkboxes, red and blue, and then a shape from a
list of radio buttons, square or circle. When the “Draw” button is pressed the selected
shape and color are drawn. If both red and blue are chosen, the shape is drawn in purple.
should look like the following picture:
This is about as far i've gotten, stumped as to how to create the circle and print it when that option is chosen. Also how do I reorganize the labels and buttons?
any help is appreciated
import java.awt.GridBagLayout;
import java.io.PrintWriter;
import java.util.Scanner;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class Shapes
{
public static JFrame window = new JFrame("Shapes");
public static JPanel panel = new JPanel(new GridBagLayout());
public static void main(String[] args)
{
window.setBounds(0, 0,300, 300);
window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
window.add(panel);
MApp m = new MApp();
m.setBounds(100,100,100,100);
window.add(m);
Draw d = new Draw(panel) ;
d.setBounds(0, 0, window.getWidth(), 90);
window.add(d);
window.setVisible(true);
}
}
import java.awt.Color;
import java.awt.Graphics;
import javax.swing.JFrame;
import javax.swing.JPanel;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.JPanel;
public class MApp extends JPanel implements MouseListener
{
private boolean clicked;
private Rectangle r;
public MApp()
{
clicked = false;
r = new Rectangle(15, 15, 50, 50);
addMouseListener(this);
}
public void paintComponent(Graphics g)
{
if(clicked)
{
g.setColor(Color.BLUE);
}
else
{
g.setColor(Color.RED);
}
g.fillRect((int)r.getX(), (int)r.getY(),
(int)r.getWidth(), (int)r.getHeight());
}
public void mouseClicked (MouseEvent e)
{
Point p = new Point(e.getX(),e.getY());
if(r.contains(p))
{
clicked = !clicked;
}
repaint();
}
public void Circle()
{
g.fillOval(0, 0, s, s);
}
public void mousePressed (MouseEvent evnt) {}
public void mouseReleased (MouseEvent evnt) {}
public void mouseEntered (MouseEvent evnt) {}
public void mouseExited (MouseEvent evnt) {}
}
import java.awt.Color;
import java.awt.FlowLayout;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Panel;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.ButtonGroup;
import javax.swing.GroupLayout;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JTextField;
public class Draw extends JPanel implements ActionListener
{
JTextField tfInfo;
JLabel lblColor, lblShapes;
JCheckBox cbRed, cbBlue;
ButtonGroup shapes;
JRadioButton rbCircle, rbSquare;
JButton btnSubmit;
public Draw(JPanel panel)
{
GridBagConstraints c = new GridBagConstraints();
tfInfo = new JTextField("Color", 15);
tfInfo = new JTextField("Shapes", 50);
lblColor = new JLabel("Colors:");
cbRed = new JCheckBox("Red");
cbBlue = new JCheckBox("Blue");
lblShapes = new JLabel("Shapes:");
shapes = new ButtonGroup();
rbCircle = new JRadioButton("Circle");
rbSquare = new JRadioButton("Square");
btnSubmit = new JButton("Draw");
btnSubmit.addActionListener(this);
this.setBackground(Color.WHITE);
add(lblColor);
add(cbRed);
add(cbBlue);
add(lblShapes);
add(rbCircle);
add(rbSquare);
add(btnSubmit);
shapes.add(rbCircle);
shapes.add(rbSquare);
}
public void actionPerformed(ActionEvent a)
{
if(a.getSource() == btnSubmit)
{
if(cbRed.isSelected()&&cbBlue.isSelected())
{
if(rbCircle.isSelected())
{
}
else if(rbSquare.isSelected())
{
}
}
else if(cbRed.isSelected())
{
if(rbCircle.isSelected())
{
}
else if(rbSquare.isSelected())
{
}
}
else if(cbBlue.isSelected())
{
if(rbCircle.isSelected())
{
}
}
else if(rbSquare.isSelected())
{
}
}
repaint();
}
}

Start by separating your "management" code from you "painting" code
You should have a single class that only handles the painting of the shape, nothing else, it just does what it's told.
You should then have a second class which takes input from the user and when they press the Draw button, it tells the "paint" class what it should be paint, for example...
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class DrawStuff extends JFrame {
public static void main(String[] args) {
new DrawStuff();
}
public DrawStuff() {
EventQueue.invokeLater(new Runnable() {
#Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new ControlPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class ControlPane extends JPanel {
private JRadioButton circle;
private JRadioButton square;
private DrawPane drawPane;
public ControlPane() {
setLayout(new GridBagLayout());
ButtonGroup bg = new ButtonGroup();
circle = new JRadioButton("Circle");
square = new JRadioButton("Square");
bg.add(circle);
bg.add(square);
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridwidth = GridBagConstraints.REMAINDER;
gbc.weightx = 1;
JPanel shape = new JPanel();
shape.add(circle);
shape.add(square);
add(shape, gbc);
JButton draw = new JButton("Draw");
draw.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent e) {
if (circle.isSelected()) {
drawPane.setDrawableShape(DrawableShape.CIRCLE);
} else if (square.isSelected()) {
drawPane.setDrawableShape(DrawableShape.SQUARE);
}
}
});
gbc.gridwidth = GridBagConstraints.REMAINDER;
add(draw, gbc);
drawPane = new DrawPane();
gbc.weightx = 1;
gbc.weighty = 1;
gbc.fill = gbc.BOTH;
add(drawPane, gbc);
}
}
public enum DrawableShape {
CIRCLE,
SQUARE
}
public class DrawPane extends JPanel {
private DrawableShape drawableShape;
public DrawPane() {
}
public void setDrawableShape(DrawableShape drawableShape) {
this.drawableShape = drawableShape;
repaint();
}
public DrawableShape getDrawableShape() {
return drawableShape;
}
#Override
public Dimension getPreferredSize() {
return new Dimension(200, 200);
}
#Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2d = (Graphics2D) g.create();
DrawableShape shape = getDrawableShape();
if (shape != null) {
int width = getWidth() - 20;
int height = getHeight() - 20;
int size = Math.min(width, height);
int x = (getWidth() - size) / 2;
int y = (getHeight() - size) / 2;
if (shape == DrawableShape.CIRCLE) {
g2d.fillOval(x, y, size, size);
} else if (shape == DrawableShape.SQUARE) {
g2d.fillRect(x, y, size, size);
}
}
g2d.dispose();
}
}
}
I'll leave you to add in the color management.
Have a closer look at:
How to Use Buttons, Check Boxes, and Radio Buttons
How to Write an Action Listeners
Painting in AWT and Swing
Performing Custom Painting
2D Graphics
for more details

can you help me with this java program?

I just started using swing and events
what I wanted was a basic program where there is a button in a window and when you click on the button an oval moves around the screen for time,like wanted to be like animated.
This is what I did for it
package testmode;
import java.awt.BorderLayout;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class Ainmationtester implements ActionListener {
JFrame frame;
JButton Button;
int x = 30, y = 30;
Ainmationtester tester = new Ainmationtester();
Ainmationtester.MyDrawPanels test = tester.new MyDrawPanels();
public static void main(String[] args) {
// TODO Auto-generated method stubc
Ainmationtester test = new Ainmationtester();
test.go();
}
public void go() {
frame = new JFrame("Aniamtor");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(500, 500);
frame.setVisible(true);
Button = new JButton("CLick me to Animate");
Button.addActionListener(this);
frame.getContentPane().add(BorderLayout.NORTH, Button);
frame.getContentPane().add(BorderLayout.CENTER, test);
}
public class MyDrawPanels extends JPanel {
public void paintComponent(Graphics g) {
g.fillOval(x, y, 10, 10);
}
}
public void actionPerformed(ActionEvent event) {
for (int i = 0; i < 200; i++){
test.repaint();
x++;
y++;
}
}
}

I wrote an example based on your code.
import java.awt.BorderLayout;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class Ainmationtester implements ActionListener {
JFrame frame;
JButton Button;
int x = 30, y = 30;
MyDrawPanels draw = new MyDrawPanels();
public static void main(String[] args) {
Ainmationtester test = new Ainmationtester();
test.go();
}
public void go() {
frame = new JFrame("Aniamtor");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(500, 500);
Button = new JButton("CLick me to Animate");
Button.addActionListener(this);
frame.getContentPane().add(BorderLayout.NORTH, Button);
frame.getContentPane().add(BorderLayout.CENTER, draw);
frame.setVisible(true);
}
public class MyDrawPanels extends JPanel {
private static final long serialVersionUID = 1L;
public void paintComponent(Graphics g) {
g.fillOval(x, y, 50, 50);
}
}
public void actionPerformed(ActionEvent event) {
x += 5;
y += 5;
frame.repaint();
}
}
The final run screenshot is the following
Hope that helped

Make jtoolbar transparent

I have a jPanel with background and I want to add a JToolbar on it.
My problem is when I add JToolbar its default background is bothering and I set it's opaque to false but has no effect.
I want to remove it's default background and make it transparent.
I read the following article but no help:
JToolbar background image
Here is my code:
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Image;
import javax.swing.Action;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JToolBar;
public class Toolbar extends JToolBar {
private JButton manage;
private JButton add;
private JButton search;
private JButton exit;
public Toolbar() {
super();
manage = new JButton();
add = new JButton();
search = new JButton();
exit = new JButton();
ImageIcon icon = new ImageIcon("pics/Add-01.png");
Image img = icon.getImage();
Image newImage = img.getScaledInstance(80, 80, Image.SCALE_SMOOTH);
add.setIcon(new ImageIcon(newImage));
setOpaque(false);
setBackground(Color.RED);
add(add);
add(search);
add(manage);
add(exit);
}
}
Thank you for your support.
Not working code:
public class Toolbar extends JToolBar {
public Toolbar() {
setBackground(Color.RED);
setOpaque(false);
add(new JButton("add"));
}
protected void addImpl(Component comp, Object constraints, int index) {
super.addImpl(comp, constraints, index);
if (comp instanceof JButton) {
((JButton) comp).setContentAreaFilled(false);
}
}
}

Basically, the buttons are still "filling" their backgrounds. You can instruct them to not paint their content (background) through JButton#setContentAreaFilled
This example sets the background color of the JToolBar to red, so you can see that the buttons are now transparent. To make the tool bar transparent, simply add setOpaque(false) in the constructor
public class CustomToolBar extends JToolBar {
public CustomToolBar() {
setBackground(Color.RED);
}
protected void addImpl(Component comp, Object constraints, int index) {
super.addImpl(comp, constraints, index);
if (comp instanceof JButton) {
((JButton) comp).setContentAreaFilled(false);
}
}
}
Extended example....
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JToolBar;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.border.LineBorder;
public class Test {
public static void main(String[] args) {
new Test();
}
public Test() {
EventQueue.invokeLater(new Runnable() {
#Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
JButton manage = new JButton("Manage");
JButton add = new JButton("Add");
JButton search = new JButton("Search");
JButton exit = new JButton("Exit");
CustomToolBar tb = new CustomToolBar();
tb.add(manage);
tb.add(add);
tb.add(search);
tb.add(exit);
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setContentPane(new TestPane());
frame.add(tb, BorderLayout.NORTH);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class TestPane extends JPanel {
private BufferedImage bgImg;
public TestPane() {
setLayout(new BorderLayout());
try {
bgImg = ImageIO.read(new File("..."));
} catch (IOException ex) {
ex.printStackTrace();
}
}
#Override
public Dimension getPreferredSize() {
return bgImg == null ? new Dimension(200, 200) : new Dimension(bgImg.getWidth(), bgImg.getHeight());
}
#Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
if (bgImg != null) {
Graphics2D g2d = (Graphics2D) g.create();
int x = (getWidth() - bgImg.getWidth()) / 2;
int y = (getHeight() - bgImg.getHeight()) / 2;
g2d.drawImage(bgImg, x, y, this);
g2d.dispose();
}
}
}
public class CustomToolBar extends JToolBar {
public CustomToolBar() {
setBorder(new LineBorder(Color.BLACK, 2));
setOpaque(false);
}
#Override
protected void addImpl(Component comp, Object constraints, int index) {
super.addImpl(comp, constraints, index);
if (comp instanceof JButton) {
((JButton) comp).setContentAreaFilled(false);
}
}
}
}

How can i add repeat background image in Jframe?

How can i add repeat background image in Jframe?
import java.awt.BorderLayout;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class myGUI extends JFrame {
/**
* Create the frame.
*/
public myGUI() {
super.setResizable(false);
super.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
super.setUndecorated(true);
super.setExtendedState(JFrame.MAXIMIZED_BOTH);
super.setVisible(true);
}
}
I tried many examples, but not found code that background with a repeat.
Update, that is my GUI and ImagePanel.
The GUI:
import java.awt.BorderLayout;
import java.awt.Toolkit;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
#SuppressWarnings("serial")
public class GUI extends JFrame {
private JPanel logPanel = new LogPane();
private JPanel logotipPanel = new LogotipPane();
ImagePanel mainPanel = new ImagePanel(Toolkit.getDefaultToolkit().getImage( "C:/Users/Owner/workspace/Blackjack/bin/bg.png" ));
/**
* Create the frame.
*/
public GUI() {
logPanel.setOpaque(false);
logotipPanel.setOpaque(false);
mainPanel.add(logPanel, BorderLayout.EAST);
mainPanel.add(logotipPanel, BorderLayout.NORTH);
add(mainPanel);
setResizable(false);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setUndecorated(true);
setExtendedState(JFrame.MAXIMIZED_BOTH);
setVisible(true);
}
}
The ImagePanel:
import java.awt.Graphics;
import java.awt.Image;
import javax.swing.JPanel;
#SuppressWarnings("serial")
class ImagePanel extends JPanel {
private Image image;
ImagePanel(Image image) {
this.image = image;
}
#Override
public void paintComponent(Graphics g) {
super.paintComponent(g);
int iw = image.getWidth(this);
int ih = image.getHeight(this);
if (iw > 0 && ih > 0) {
for (int x = 0; x < getWidth(); x += iw) {
for (int y = 0; y < getHeight(); y += ih) {
g.drawImage(image, x, y, iw, ih, this);
}
}
}
}
}
So, the matter with the background with repeat resolved, but in this way i cant use all of the BorderLayouts because i adding panels into ImagePanel and not to JFrame GUI.

import java.awt.BorderLayout;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.ActionEvent;
import java.io.IOException;
import java.net.URL;
import javax.imageio.ImageIO;
import javax.swing.AbstractAction;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class Main {
public static void main(String[] args) throws IOException {
final Image image = ImageIO.read(new File("logo.png"));
final JFrame frame = new JFrame();
JPanel imagePanel = new ImagePanel(image);
imagePanel.setLayout(new BorderLayout()); // setting layout as BorderLayout
JPanel anotherPanel = new JPanel(); /// multiple panel,
anotherPanel.setSize(100, 290);
anotherPanel.setOpaque(false); // THIS IS VERY MUCH IMPORTANT
anotherPanel.add(new JButton("Alpesh Gediya"));
imagePanel.add(anotherPanel); //add panel to ImagePanel
frame.add(imagePanel);
frame.setSize(800, 600);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
}
#SuppressWarnings("serial")
class ImagePanel extends JPanel {
private Image image;
private boolean tile;
ImagePanel(Image image) {
this.image = image;
this.tile = false;
final JCheckBox checkBox = new JCheckBox();
checkBox.setAction(new AbstractAction("Tile") {
public void actionPerformed(ActionEvent e) {
tile = checkBox.isSelected();
repaint();
}
});
add(checkBox, BorderLayout.SOUTH);
};
#Override
public void paintComponent(Graphics g) {
super.paintComponent(g);
if (tile) {
int iw = image.getWidth(this);
int ih = image.getHeight(this);
if (iw > 0 && ih > 0) {
for (int x = 0; x < getWidth(); x += iw) {
for (int y = 0; y < getHeight(); y += ih) {
g.drawImage(image, x, y, iw, ih, this);
}
}
}
} else {
g.drawImage(image, 0, 0, getWidth(), getHeight(), this);
}
}
}
EDIT :
imagePanel.setLayout(new BorderLayout()); // setting layout as BorderLayout for panel as
// Jpanel have FlowLayout as Default LayoutManager.