when I double click the swing jar,it displays normal .button,textfield and label are displayed as expected.
but after some time,JPanel is automaticly resized to minimum as below shows.
I have already set frame setResizable(false)
anyone can give some ideas?
public TestSwing() {
super(new GridBagLayout());
GridBagConstraints c = new GridBagConstraints();
log = new JTextArea(18, 45);
log.setMargin(new Insets(5, 5, 5, 5));
log.setEditable(true);
logScrollPane = new JScrollPane(log);
DefaultCaret caret = (DefaultCaret) log.getCaret();
caret.setUpdatePolicy(DefaultCaret.ALWAYS_UPDATE);
btn_source = new JButton("open");
btn_dest = new JButton("open");
lbl_sourceFile = new JLabel("Source Excel File:");
lbl_destFile = new JLabel("Destination XML Folder:");
txt_source = new JTextField(45);
txt_dest = new JTextField(45);
btn_convert = new JButton("Convert");
c.fill = GridBagConstraints.VERTICAL;
c.insets = new Insets(0, 0, 0, 0);
c.gridx = 0;
c.gridy = 0;
c.gridwidth = 1;
add(lbl_sourceFile, c);
c.fill = GridBagConstraints.HORIZONTAL;
c.gridx = 1;
c.gridy = 0;
c.gridwidth = 1;
add(txt_source, c);
c.fill = GridBagConstraints.HORIZONTAL;
c.gridx = 2;
c.gridy = 0;
c.insets = new Insets(0, 10, 2, 0);
c.gridwidth = 1;
add(btn_source, c);
}
public void actionPerformed(ActionEvent e) {}
private static void createAndShowGUI() {
JFrame frame = new JFrame("TestLink Converter");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new TestSwing());
frame.setLocationRelativeTo(null);
frame.setResizable(false);
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
UIManager.put("swing.boldMetal", Boolean.FALSE);
createAndShowGUI();
}
});
}
}
frame.add(new TLSwing());
We don't know what "TLSing()" class is, but I would guess it is a panel that uses a GridBagLayout. When there is no enough space to show the component at its preferred size, the component will be displayed at its minimum size so your text components shrink.
I have already set frame setResizable(false)
You should set the resize state BEFORE you pack() the frame.
frame.setResizable(false);
frame.pack();
frame.setVisible(true);
//frame.setResizable(false);
Related
OK I'm trying to modify an existing answer from below link to fit my needs. In my case I need to set the JTabbedPane.TOP, but then the buttons disappear.
I'm not too familiar with Swing, so someone please let me know. Below is the full working code example from link.
How to place components beneath tabs in right oriented JTabbedPane
public class RightTabPaneButtonPanel {
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
#Override
public void run() {
new RightTabPaneButtonPanel().makeUI();
}
});
}
public void makeUI() {
JTabbedPane tabbedPane = new JTabbedPane();
tabbedPane.setTabPlacement(JTabbedPane.TOP);
JPanel panel = new JPanel(new GridLayout(1, 0));
for (int i = 0; i < 3; i++) {
JPanel tab = new JPanel();
tab.setName("tab" + (i + 1));
tab.setPreferredSize(new Dimension(400, 400));
tabbedPane.add(tab);
JButton button = new JButton("B" + (i + 1));
button.setMargin(new Insets(0, 0, 0, 0));
panel.add(button);
}
JFrame frame = new JFrame();
frame.add(tabbedPane);
frame.pack();
Rectangle tabBounds = tabbedPane.getBoundsAt(0);
Container glassPane = (Container) frame.getGlassPane();
glassPane.setVisible(true);
glassPane.setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.weightx = 1.0;
gbc.weighty = 1.0;
gbc.fill = GridBagConstraints.NONE;
int margin = tabbedPane.getWidth() - (tabBounds.x + tabBounds.width);
gbc.insets = new Insets(0, 0, 0, margin);
gbc.anchor = GridBagConstraints.SOUTHEAST;
panel.setPreferredSize(new Dimension((int) tabBounds.getWidth() - margin,
panel.getPreferredSize().height));
glassPane.add(panel, gbc);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
}
Here is an approach that uses the OverlayLayout:
import java.awt.*;
import javax.swing.*;
import javax.swing.plaf.*;
public class TabbedPaneWithComponent
{
private static void createAndShowUI()
{
JPanel panel = new JPanel();
panel.setLayout( new OverlayLayout(panel) );
JTabbedPane tabbedPane = new JTabbedPane();
tabbedPane.add("1", new JTextField("one"));
tabbedPane.add("2", new JTextField("two"));
tabbedPane.setAlignmentX(1.0f);
tabbedPane.setAlignmentY(0.0f);
JCheckBox checkBox = new JCheckBox("Check Me");
checkBox.setOpaque( false );
checkBox.setAlignmentX(1.0f);
checkBox.setAlignmentY(0.0f);
JPanel right = new JPanel( new FlowLayout(FlowLayout.RIGHT, 5, 0) );
right.setOpaque( false );
right.setAlignmentX(1.0f);
right.setAlignmentY(0.0f);
right.add( new JCheckBox("Check Me") );
right.add( new JCheckBox("Or Check Me") );
right.setMaximumSize( right.getPreferredSize() );
panel.add( checkBox );
// panel.add( right );
panel.add(tabbedPane);
JFrame frame = new JFrame("TabbedPane With Component");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add( panel );
frame.setLocationByPlatform( true );
frame.setSize(400, 100);
frame.setVisible( true );
System.out.println(checkBox.getPreferredSize() + " : " + right.getPreferredSize());
}
public static void main(String[] args)
{
EventQueue.invokeLater(new Runnable()
{
public void run()
{
createAndShowUI();
}
});
}
}
I guess this is what you want:
GridBagConstraints gbc = new GridBagConstraints();
gbc.weightx = 1.0;
gbc.weighty = 1.0;
gbc.fill = GridBagConstraints.NONE;
gbc.anchor = GridBagConstraints.NORTHEAST;
panel.setPreferredSize(new Dimension(panel.getPreferredSize().width,
(int) tabBounds.getHeight()));
glassPane.add(panel, gbc);
Why are my constraints for my buttons not working? I looked at the Java Docs and am doing the same thing the tutorials are doing, but for me the buttons stay the same regardless of what gridx, y, width, or fill I use. Any ideas? Here's my code:
class MyWindow
{
public static void main(String [] arg)
{
MyJFrame f = new MyJFrame("My GUI 2015");
f.setVisible(true);
f.setSize(10, 20);
f.add(f.p);
}
}
and
public class MyJFrame extends JFrame {
public JPanel p;
JButton close = new JButton("close");
JButton drawing = new JButton("drawing");
JButton image = new JButton("image");
JButton browser = new JButton("browser");
public MyJFrame(String title) {
super(title);
p = new JPanel();
buildButtons();
}
void buildButtons() {
GridBagConstraints c = new GridBagConstraints();
c.insets = new Insets(0,40,0,150);
c.gridx = 0;
c.gridy = 0;
p.add(drawing, c);
c.gridx = 2;
c.gridy = 0;
p.add(close, c);
c.insets = new Insets(50,225,50,150);
c.gridx = 0;
c.gridy = 1;
p.add(image, c);
c.insets = new Insets(0,125,0,125);
c.gridx = 0;
c.gridy = 100;
c.gridwidth = 3;
c.fill = GridBagConstraints.HORIZONTAL;
p.add(browser, c);
}
}
The LayoutManager for the container is not specified in your current code (the default for a JPanel is FlowLayout). If you wish to use a GridBagLayout on the container, you must explicitly specify the LayoutManager:
p = new JPanel(new GridBagLayout());
//or
p.setLayout(new GridBagLayout());
Need a little GridbagLayout guidance. Please see code below. What I want is for button2 to be twice as wide as buttons 1, 3, and 4. However, all four are actually being displayed with the same width. Obviously doing something wrong, but I can’t figure out what.
Thanks.
import java.awt.*;
import javax.swing.*;
public class GridbagLayoutTetst {
private static void createAndShowGUI() {
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(400, 250);
JPanel panel = new JPanel();
GridBagLayout gridbag = new GridBagLayout();
GridBagConstraints c = new GridBagConstraints();
c.fill = GridBagConstraints.HORIZONTAL;
c.weightx = 1.0;
panel.setLayout(gridbag);
JButton button0 = new JButton("Button 0");
c.gridwidth = GridBagConstraints.REMAINDER;
gridbag.setConstraints(button0, c);
panel.add(button0);
JButton button1 = new JButton("Button 1");
c.gridwidth = 1;
gridbag.setConstraints(button1, c);
panel.add(button1);
JButton button2 = new JButton("Button 2");
c.gridwidth = 2;
gridbag.setConstraints(button2, c);
panel.add(button2);
JButton button3 = new JButton("Button 3");
c.gridwidth = 1;
gridbag.setConstraints(button3, c);
panel.add(button3);
JButton button4 = new JButton("Button 4");
c.gridwidth = GridBagConstraints.REMAINDER;
gridbag.setConstraints(button4, c);
panel.add(button4);
frame.add(panel);
frame.setVisible(true);
}
public static void main(String[] args) {
try {
UIManager.setLookAndFeel(
"com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel"
);
} catch (Exception exc) {
//
}
SwingUtilities.invokeLater(new Runnable() {
#Override
public void run() {
createAndShowGUI();
}
});
}
}
OK, by using a combination of fill, setPreferredSize and weightx I achieved the result I wanted. See below. Now button2 is always twice as wide as the other buttons in that row, even when I resize the frame. Just feels like a hack to me. Would appreciate guidance on the "preferred" way of doing this.
import java.awt.*;
import javax.swing.*;
public class GridbagLayoutTetst {
private static void createAndShowGUI() {
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(400, 250);
JPanel panel = new JPanel();
GridBagLayout gridbag = new GridBagLayout();
GridBagConstraints c = new GridBagConstraints();
c.fill = GridBagConstraints.HORIZONTAL;
c.weightx = 1.0;
panel.setLayout(gridbag);
JButton button0 = new JButton("Button 0");
c.gridwidth = GridBagConstraints.REMAINDER;
gridbag.setConstraints(button0, c);
panel.add(button0);
JButton button1 = new JButton("Button 1");
button1.setPreferredSize(new Dimension (0,28));
c.weightx = 0.2;
c.gridwidth = 1;
gridbag.setConstraints(button1, c);
panel.add(button1);
JButton button2 = new JButton("Button 2");
button2.setPreferredSize(new Dimension (0,28));
c.weightx = 0.4;
gridbag.setConstraints(button2, c);
panel.add(button2);
JButton button3 = new JButton("Button 3");
button3.setPreferredSize(new Dimension (0,28));
c.weightx = 0.2;
gridbag.setConstraints(button3, c);
panel.add(button3);
JButton button4 = new JButton("Button 4");
button4.setPreferredSize(new Dimension (0,28));
c.gridwidth = GridBagConstraints.REMAINDER;
gridbag.setConstraints(button4, c);
panel.add(button4);
frame.add(panel);
frame.setVisible(true);
System.out.println(button1.getPreferredSize());
}
public static void main(String[] args) {
try {
UIManager.setLookAndFeel(
"com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel"
);
} catch (Exception exc) {
//
}
SwingUtilities.invokeLater(new Runnable() {
#Override
public void run() {
createAndShowGUI();
}
});
}
}
I've attached a screenshot for which the following Border legend applies:
Yellow = JPanel with BorderLayout
Blue = JPanel with GridBagLayout
Fuchsia = JPanel with FlowLayout
There are two panels not blocked out in colors that warrant mentioning:
1) The title panel where the word "Primary" is displayed; this panel is at BorderLayout.NORTH in "Yellow" panel.
2) The image panel where the image of the device is located; this panel is a sibling to "Fuchsia"
"Blue" is at BorderLayout.CENTER in "Yellow" while "Fuchsia" and the image panel are given the following constraints:
GridBagConstraints c = new GridBagConstraints();
c.weightx = 1.0;
c.weighty = 1.0;
c.gridx = 0;
c.gridy = 0;
c.anchor = GridBagConstraints.NORTHWEST;
c.insets = new Insets(0, 10, 0, 0);
c.fill = GridBagConstraints.BOTH;
//"Blue".add(imagePanel, c);
c.weighty = 0.80;
c.gridy = 1;
c.fill = GridBagConstraints.HORIZONTAL;
//"Blue".add("Fuchsia", c);
As you can probably tell from the image, I'm trying to get rid of the "wasted" space in "Blue" right below "Fuchsia". I don't seem to be able to do it with GridBagConstraints, so am I just using the wrong LayoutManager? It looks to me like "Blue", who is at CENTER in the BorderLayout is just giving each child JPanel half of the available space and reserving the remainder space instead of contracting upward. What am I missing here? Is this simply a matter of setting a preferred or maximum size on "Fuchsia"? it doesn't seem like that will get me where I want to be, since the border around "Fuchsia" (which is covered by my color coding) is where I want the end of the component to be.
Have a look at this output, from this code example :
import java.awt.*;
import javax.swing.*;
public class LayoutTest
{
private void displayGUI()
{
JFrame frame = new JFrame("Layout Test");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JPanel contentPane = new JPanel();
contentPane.setOpaque(true);
contentPane.setBackground(Color.YELLOW);
contentPane.setLayout(new BorderLayout(2, 2));
JPanel topPanel = new JPanel();
topPanel.setLayout(new FlowLayout(FlowLayout.LEFT));
JLabel headingLabel = new JLabel("Primary");
topPanel.add(headingLabel);
contentPane.add(topPanel, BorderLayout.PAGE_START);
JPanel centerPanel = new JPanel();
centerPanel.setOpaque(true);
centerPanel.setBackground(Color.BLUE);
centerPanel.setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.anchor = GridBagConstraints.FIRST_LINE_START;
gbc.fill = GridBagConstraints.BOTH;
gbc.weightx = 1.0;
gbc.weighty = 0.2;
gbc.gridx = 0;
gbc.gridy = 0;
JPanel imagePanel = new JPanel();
JLabel imageLabel = null;
try
{
imageLabel = new JLabel(
new ImageIcon(
new java.net.URL(
"http://pscode.org/"
+ "tame/screenshot/"
+ "landscape/slider1.gif")));
}
catch(Exception e)
{
e.printStackTrace();
}
imagePanel.add(imageLabel);
centerPanel.add(imagePanel, gbc);
JPanel detailsPanel = new JPanel();
detailsPanel.setOpaque(true);
detailsPanel.setBackground(Color.WHITE);
detailsPanel.setBorder(
BorderFactory.createEmptyBorder(
5, 5, 5, 5));
detailsPanel.setLayout(new GridLayout(0, 1, 5, 5));
JLabel statusLabel = new JLabel("Chassis Status : ");
JLabel usageLabel = new JLabel("Bandwidth Usage : ");
JLabel fanLabel = new JLabel("Fan Status : ");
detailsPanel.add(statusLabel);
detailsPanel.add(usageLabel);
detailsPanel.add(fanLabel);
gbc.fill = GridBagConstraints.BOTH;
gbc.weighty = 0.8;
gbc.gridx = 0;
gbc.gridy = 1;
gbc.gridheight = 3;
centerPanel.add(detailsPanel, gbc);
contentPane.add(centerPanel, BorderLayout.CENTER);
frame.setContentPane(contentPane);
frame.pack();
frame.setLocationByPlatform(true);
frame.setVisible(true);
}
public static void main(String... args)
{
SwingUtilities.invokeLater(new Runnable()
{
public void run()
{
new LayoutTest().displayGUI();
}
});
}
}
Without using GridBagLayout could be
import java.awt.BorderLayout;
import java.awt.Color;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.swing.border.LineBorder;
public class NestedLayout {
private JFrame frame = new JFrame();
private JPanel yellowNorthPanel = new JPanel();
private JPanel yellowPanel = new JPanel();
private JPanel bluePanel = new JPanel();
private JPanel fuchsiaTopPanel = new JPanel();
private JPanel fuchsiaBottonPanel = new JPanel();
public NestedLayout() {
yellowNorthPanel.setBorder(new LineBorder(Color.yellow, 5));
yellowPanel.setLayout(new BorderLayout());
yellowPanel.setBorder(new LineBorder(Color.yellow, 5));
bluePanel.setLayout(new BorderLayout(5, 5));
bluePanel.setBorder(new LineBorder(Color.blue, 5));
fuchsiaTopPanel.setBorder(new LineBorder(Color.cyan, 5));
fuchsiaBottonPanel.setBorder(new LineBorder(Color.cyan, 5));
bluePanel.add(fuchsiaTopPanel, BorderLayout.NORTH);
bluePanel.add(fuchsiaBottonPanel);
yellowPanel.add(bluePanel);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(yellowNorthPanel, BorderLayout.NORTH);
frame.add(yellowPanel);
//frame.pack();
frame.setSize(400, 300);
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
#Override
public void run() {
new NestedLayout();
}
});
}
}
Hi I am trying to add 2 JPanel's to a JFrame that take the full width and height of the JFrame.I managed to add them with GridBagLayout() but I can't seem to set the size of the JPanels using the setsize().I have also tryied to used ipady and ipadx while that seemed to work at first after I aded some buttons the whole layout became a mess.Here is my code:
JFrame tradeframe = new JFrame("Trade");
JPanel P1panel = new JPanel();
P1panel.setBackground(Color.red);
JPanel P2panel = new JPanel();
P2panel.setBackground(Color.BLACK);
tradeframe.setVisible(true);
tradeframe.setSize(600, 400);
tradeframe.setResizable(false);
tradeframe.setLocationRelativeTo(null);
tradeframe.setLayout(new GridBagLayout());
P1panel.add(new JButton ("P1 Agree"));
P2panel.add(new JButton ("P2 Agree"));
GridBagConstraints a = new GridBagConstraints();
a.gridx = 0;
a.gridy = 0;
a.weightx = 360;
a.weighty = 300;
//a.fill = GridBagConstraints.HORIZONTAL;
tradeframe.add(P1panel , a);
GridBagConstraints b = new GridBagConstraints();
b.gridx = 1;
b.gridy = 0;
b.weightx = 360;
b.weighty = 300;
// b.fill = GridBagConstraints.HORIZONTAL;
tradeframe.add(P2panel , b);
How can I make that each JPanel is 300px width and 400px in height?
for GridBaglayout you have to set
fill
anchor
weightx and weighty
gridx / gridy (depend of orientations)
then is possible for example
import java.awt.*;
import javax.swing.*;
import javax.swing.border.*;
public class BorderPanels extends JFrame {
private static final long serialVersionUID = 1L;
public BorderPanels() {
setLayout(new GridBagLayout());// set LayoutManager
GridBagConstraints gbc = new GridBagConstraints();
JPanel panel1 = new JPanel();
Border eBorder = BorderFactory.createEtchedBorder();
panel1.setBorder(BorderFactory.createTitledBorder(eBorder, "20pct"));
gbc.gridx = gbc.gridy = 0;
gbc.gridwidth = gbc.gridheight = 1;
gbc.fill = GridBagConstraints.BOTH;
gbc.anchor = GridBagConstraints.NORTHWEST;
gbc.weightx = gbc.weighty = 20;
add(panel1, gbc); // add compoenet to the COntentPane
JPanel panel2 = new JPanel();
panel2.setBorder(BorderFactory.createTitledBorder(eBorder, "60pct"));
gbc.gridy = 1;
gbc.weightx = gbc.weighty = 60;
//gbc.insets = new Insets(2, 2, 2, 2);
add(panel2, gbc); // add component to the COntentPane
JPanel panel3 = new JPanel();
panel3.setBorder(BorderFactory.createTitledBorder(eBorder, "20pct"));
gbc.gridy = 2;
gbc.weightx = gbc.weighty = 20;
gbc.insets = new Insets(2, 2, 2, 2);
add(panel3, gbc);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // important
pack();
setVisible(true); // important
}
public static void main(String[] args) {
javax.swing.SwingUtilities.invokeLater(new Runnable() { // important
public void run() {
BorderPanels borderPanels = new BorderPanels();
}
});
}
}
on most cases will be better use another LayoutManager
JFrame tradeframe = new JFrame("Trade");
JPanel P1panel = new JPanel();
P1panel.setBackground(Color.red);
JPanel P2panel = new JPanel();
P2panel.setBackground(Color.BLACK);
tradeframe.setSize(600, 400);
tradeframe.setResizable(false);
tradeframe.setLocationRelativeTo(null);
Box content = new Box(BoxLayout.X_AXIS);
P1panel.add(new JButton ("P1 Agree"));
P2panel.add(new JButton ("P2 Agree"));
content.add(P1panel);
content.add(P2panel);
tradeframe.setContentPane(content);
tradeframe.setVisible(true);
Invoke setPreferredSize(new Dimension(int width, int height)); method on your panel objects.
Here is the way to do that :
import java.awt.*;
import javax.swing.*;
public class GridBagLayoutTest
{
public GridBagLayoutTest()
{
JFrame frame = new JFrame("GridBag Layout Test");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLocationByPlatform(true);
Container container = frame.getContentPane();
container.setLayout(new GridBagLayout());
JPanel leftPanel = new JPanel();
leftPanel.setBackground(Color.WHITE);
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 0;
gbc.weightx = 0.5;
gbc.weighty = 1.0;
gbc.anchor = GridBagConstraints.FIRST_LINE_START;
gbc.fill = GridBagConstraints.BOTH;
container.add(leftPanel, gbc);
JPanel rightPanel = new JPanel();
rightPanel.setBackground(Color.BLUE);
gbc = new GridBagConstraints();
gbc.gridx = 1;
gbc.gridy = 0;
gbc.weightx = 0.5;
gbc.weighty = 1.0;
gbc.anchor = GridBagConstraints.FIRST_LINE_END;
gbc.fill = GridBagConstraints.BOTH;
container.add(rightPanel, gbc);
frame.setSize(600, 400);
frame.setVisible(true);
}
public static void main(String... args)
{
Runnable runnable = new Runnable()
{
public void run()
{
new GridBagLayoutTest();
}
};
SwingUtilities.invokeLater(runnable);
}
}
OUTPUT :
You are using setSize() instead of setPreferredSize(). The difference is somewhat misleading and I would consider it a gotcha in java. Some more information about what the difference between the two can be found here.
The article I link has some other pitfalls/gotchas and a useful read if you are new to Java.