I'm trying to make something that looks like this:
As you can see, I want the labels on opposite sides of each other on the same line in the same parent container.
I tried using the GridBagLayout, and here is my code:
JPanel cont = new JPanel();
JLabel left = new JLabel("left");
JLabel right = new JLabel("right");
GridBagConstraints gbc = new GridBagConstraints();
gbc.anchor = GridBagConstraints.WEST;
cont.add(left, gbc);
gbc = new GridBagConstraints();
gbc.anchor = GridBagConstraints.EAST;
cont.add(right, gbc);
You can use GridBagLayout, but I find using the constraints painful and sometimes unpredictable. This is easier with GridLayout and specifying the justification of the JLabel.
Here's an example that puts two JLabels in a row as in your drawing:
JPanel labelrow = new JPanel(new GridLayout(1,2));
JLabel left = new JLabel("left side", JLabel.LEFT);
JLabel right = new JLabel("right side", JLabel.RIGHT);
You can do the same with other controls, like buttons, if you put them inside JPanels with FlowLayouts that are left and right-justified.
Here's an example showing it with buttons off to each side:
JPanel buttons = new JPanel(new GridLayout(1,2));
JPanel left = new JPanel(new FlowLayout(FlowLayout.LEFT));
JPanel right = new JPanel(new FlowLayout(FlowLayout.RIGHT));
left.add(new JButton("Left"));
right.add(new JButton("Right"));
buttons.add(left);
buttons.add(right);
Related
I am trying to figure out the layout for this(the rest of the code is in the early stages) but for this block, I am trying to figure out the best(and doable) way to format it. I want it to be an 8x8 grid that I will eventually populate with the treasure/empty buttons but I also need a title up top as well as some labels and text on the left. I am unsure if I am able to do multiple grids but what I did below is try to create a 1x2 grid and then place two other grids inside, one with the info on the left(3x2), and another with the 8x8 grid for the buttons. I know it's not close to what it needs to be but none of the grids are showing up at all(it's just putting the title and then one column with 8 rows) and I wanna know if I'm even on any sort of right track, or if I'm just making things up at this point. Any tips would be appreciated, or resources about possibly nesting the grids? I can't find anything in my book about That specifically.
private void buildPanel()
{
// Create labels to display the
treasuresLeftLabel = new JLabel("Treasures left: ");
treasuresFoundLabel = new JLabel("Treasures found: ");
triesLeftLabel = new JLabel("Tries left: ");
// Create text fields for each label
treasuresLeftTextField = new JTextField(2);
treasuresLeftTextField.setEditable(false);
treasuresLeftTextField.setText(String.valueOf(20-game.getTreasuresFound()));
treasuresFoundTextField = new JTextField(2);
treasuresFoundTextField.setEditable(false);
treasuresFoundTextField.setText(String.valueOf(game.getTreasuresFound()));
triesLeftTextField = new JTextField(2);
triesLeftTextField.setEditable(false);
triesLeftTextField.setText(String.valueOf(game.getTriesLeft()));
emptyButton = new EmptyButton();
emptyButton.addActionListener(new emptyButtonListener());
treasureButton = new TreasureButton();
treasureButton.addActionListener(new treasureButtonListener());
// new JPanel object referenced by panel
panel = new JPanel();
panel.setBorder(BorderFactory.createTitledBorder("Treasure Hunt"));
// Add a gridlayout to the content pane
panel.setLayout(new GridLayout(1, 2));
panel.setLayout(new GridLayout(3, 2));
panel.add(treasuresLeftLabel);
panel.add(treasuresLeftTextField);
panel.add(treasuresFoundLabel);
panel.add(treasuresFoundTextField);
panel.add(triesLeftLabel);
panel.add(triesLeftTextField);
panel.setLayout(new GridLayout(8, 8));
panel.add(treasureButton);
panel.add(emptyButton);
}
You can't use multiple grids within the same JPanel - one panel, one layout manager.
But you can nest layout managers (and thereby grids) by using nested panels.
For example you could use a BorderLayout for the first panel (containing the title at the top, the info panel on the left and the button panel in the center.
The code to construct those panel then might look like this:
// panel contains the complete UI
panel = new JPanel();
panel.setBorder(BorderFactory.createTitledBorder("Treasure Hunt"));
panel.setLayout(new BorderLayout());
panel.add(new JLabel("This is the Title"), BorderLayout.PAGE_START);
JPanel infoPanel = new JPanel();
infoPanel.setLayout(new GridLayout(3, 2));
infoPanel.add(treasuresLeftLabel);
infoPanel.add(treasuresLeftTextField);
infoPanel.add(treasuresFoundLabel);
infoPanel.add(treasuresFoundTextField);
infoPanel.add(triesLeftLabel);
infoPanel.add(triesLeftTextField);
panel.add(infoPanel, BorderLayout.LINE_START);
JPanel buttonPanel = new JPanel();
buttonPanel.setLayout(new GridLayout(8, 8));
buttonPanel.add(treasureButton);
buttonPanel.add(emptyButton);
for (int i = 0; i < 62; i++) {
buttonPanel.add(new JButton(String.format("%02d", i)));
}
panel.add(buttonPanel, BorderLayout.CENTER);
I'm pretty new to Java Swing. Can someone help me figure out what I am doing wrong? Please correct me anywhere necessary. A good portion of this code was trial and error.
I have a frame, which contains a JPanel. The JPanel is using the "GridBag" layout. The code included revolves around the child JPanel on the right side as seen in the picture. For some reason, I can't seem get my vertical scrollbar working properly.
Here's the code of interest:
/// GridBagConstraints
GridBagConstraints gbc = new GridBagConstraints();
// parent jpanel for scrollpane
scrollPanel = new JPanel();
scrollPanel.setLayout(new BorderLayout());
gbc.gridx = 1;
gbc.gridy = 0;
gbc.weightx = 1.0;
gbc.weighty = 1.0;
gbc.fill = GridBagConstraints.BOTH;
add(scrollPanel, gbc);
// content jpanel for scrollpane
scrollPaneContent = new JPanel();
scrollPaneContent.setLayout(new GridLayout(0, 1, 0, 1));
// scrollPane
scrollPane = new JScrollPane();
scrollPane.setBorder(BorderFactory.createEmptyBorder(0,30,0,0));
scrollPane.setViewportView(scrollPaneContent);
scrollPanel.add(scrollPane, BorderLayout.PAGE_START);
And here is what the program looks like at the moment.
You can see the numbers just go off the screen:
Any help is greatly appreciated! Thank you.
scrollPanel.add(scrollPane, BorderLayout.PAGE_START);
You are attempting to add the scrollPane to the scrollPanel. That is not the way it works.
A JScrollPane is a container, so you need to add the panel containing the components to the scroll pane
JPanel panel = new JPanel(...);
panel.add(....);
panel.add(....);
JScrollPane scrollPane = new JScrollPane( panel );
frame.add( scrollPane );
The above code will add the panel to the "viewport" of the scroll pane.
Can somebody explain me how can I put few jButtons inside jLabel which have background image like on this image? The main jFrame is undecorated and is set to full screen.
I saw a lot of different examples like
this or like this, but these examples are showing only single button in jPanel.
Personally, I'd avoid using a JLabel for this purpose, it does not calculate it's required size based on it's content, but rather off it's icon and text properties.
This might be a good or bad thing, but it can catch your unawares if you're not aware of it.
Instead, I'd use a customised JPanel, which would allow you to define things like the resize and fill rules, for example and for example
Now, once you have that covered, you need to create a panel of your buttons. I prefer to create a dedicated class, as it makes it easier to isolate functionality and management, but that's me...
public class ButtonPane extends JPanel {
public ButtonPane() {
setLayout(new GridBagLayout());
setBorder(new EmptyBorder(8, 8, 8, 8));
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridwidth = GridBagConstraints.REMAINDER;
gbc.insets = new Insets(2, 2, 2, 2);
add(new JButton("Button 1"), gbc);
add(new JButton("Button 2"), gbc);
add(new JButton("Button 3"), gbc);
}
}
Next, you need to add this panel to your background
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setContentPane(backgroundPane);
frame.setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.weightx = 1;
gbc.weighty = 1;
gbc.anchor = GridBagConstraints.SOUTHEAST;
gbc.insets = new Insets(30, 30, 30, 30);
ButtonPane buttonPane = new ButtonPane();
frame.add(buttonPane, gbc);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
Which can generate something like...
Have a look at Laying Out Components Within a Container and How to Use GridBagLayout for some more details
These examples are truly good enough, I think you should just learn more about swing.
For now, You could simply do:
JFrame frame = new JFrame("Hi there");
JButton b1 = new JButton("1");
JButton b2 = new JButton("2");
frame.add(b1);
frame.add(b2);
b1.setBounds(60, 60, 40, 40);
b2.setBounds(10, 10, 40, 40);
frame.setVisible(true); //in case, add frame.setLayout(null);
You can of course add buttons to JPanel instead of JFrame
I am making a program with 3 JSliders, for r,g,b and i want to add a panel that will change it's color for the chosen color in the sliders, everything works for me except one thing, I don't know how to make the panel in the full size of the screen, this is the best I could do, but this is still kind of small and I want to make the panel full size. can any one show me how to do it?
The program is kind of long so I will only send the part of the gridbaglayout and the panel.
private JPanel panel;
public delta(){
setLayout(new GridBagLayout());
GridBagConstraints c = new GridBagConstraints();
panel = new JPanel();
panel.setBackground(new Color(0 ,0 ,0));
c.fill = GridBagConstraints.HORIZONTAL;
c.gridx = 2;
c.gridy = 6;
c.gridwidth = 3;
c.gridheight = 3;
add(panel ,c);
Simply add your panel to Jframe
jframe.add(yourpanel)
This code without any Layout will fill the window.
Edit:
JFrame frame = new JFrame();
frame.setSize(500,500);
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JLabel label = new JLabel("HELLO");
frame.add(label);
This fills the JFrame with JLabel.
I need some help in JInternalFrame within JPanel's Area.I have a JFrame which contains
JPanel added to its ContentPane.JFrame Contains Menu when i click one of its Menu item i
need JInternal Frame to be added on top of the contentpane.The Code i have given so far,
JDesktopPane desktop = new JDesktopPane();
desktop.setLayout(new BorderLayout());
JPanel topPanel = new JPanel();
GridBagLayout gbl_contentPane = new GridBagLayout();
gbl_contentPane.columnWidths = new int[] { 0, 0, 0, 0 };
gbl_contentPane.rowHeights = new int[] { 0, 0, 0, 0 };
gbl_contentPane.columnWeights = new double[] { 1.0, 6.0, 1.0,
Double.MIN_VALUE };
gbl_contentPane.rowWeights = new double[] { 0.0, 8.0, 0.0,
Double.MIN_VALUE };
topPanel.setLayout(gbl_contentPane);
JPanel left = new JPanel();
GridBagConstraints gbc_left = new GridBagConstraints();
gbc_left.insets = new Insets(0, 0, 5, 5);
gbc_left.fill = GridBagConstraints.BOTH;
gbc_left.gridx = 0;
gbc_left.gridy = 1;
topPanel.add(left, gbc_left);
JPanel middle = new JPanel();
GridBagLayout gbl_middle = new GridBagLayout();
gbl_middle.columnWeights = new double[] { 1.0 };
middle.setLayout(gbl_middle);
GridBagConstraints gbc_middle = new GridBagConstraints();
gbc_middle.insets = new Insets(0, 0, 5, 5);
gbc_middle.fill = GridBagConstraints.BOTH;
gbc_middle.gridx = 1;
gbc_middle.gridy = 1;
topPanel.add(middle, gbc_middle);
GridBagConstraints gbc = new GridBagConstraints();
JPanel panel1 = new JPanel();
Border eBorder = BorderFactory.createEtchedBorder();
panel1.setBorder(BorderFactory.createTitledBorder(eBorder, "70pct"));
gbc.gridx = 0;
gbc.gridy = 0;
gbc.fill = GridBagConstraints.BOTH;
gbc.weightx = gbc.weighty = 30;
middle.add(panel1, gbc);
panel1.setLayout(new MigLayout("", "[944.00,grow][353.00]",
"[6.00][128.00,grow][]"));
/*lblHeader = new JLabel(
"<html>Indira Institute of Technology<br>Tatabad<br>Karpagam Complex Stop<br>Coimbatre</html>");
lblHeader.setIcon(new ImageIcon(
"C:\\Users\\Prakash\\Desktop\\images.jpg"));
panel1.add(lblHeader, "cell 0 1 2 1,alignx center,aligny center");*/
JPanel panel2 = new JPanel();
gbc = new GridBagConstraints();
panel2.setBorder(BorderFactory.createTitledBorder(eBorder, "30pct"));
gbc.gridy = 1;
gbc.gridwidth = gbc.gridheight = 1;
gbc.fill = GridBagConstraints.BOTH;
gbc.anchor = GridBagConstraints.NORTHWEST;
gbc.weightx = gbc.weighty = 70;
gbc.insets = new Insets(2, 2, 2, 2);
middle.add(panel2, gbc);
panel2.setLayout(new MigLayout(
"",
"[30px][69.00px][144.00][68.00][][159.00px][59.00px][65px][28.00][]",
"[20px:n,grow 50,shrink 50][20px:n,grow 50,shrink 50][20px:n,grow 50,shrink 50][20px:n,grow 50,shrink 50][30.00][48.00:n,grow 50,shrink 50]"));
getContentPane.add(topPanel);
I have never used the DesktopPane in this(I don't know how to make use of this in this situation) And The Screen So far is as follows,
Now I need the JInternalFrame to be added for the Previous Screen as Follows,
I am aware that i can only be able to add a JInternalFrame to the DesktopPane.But i
Already Filled my ContentPane with JPanel to show its content.How can i achieve Jinternal
Frame to be added in this JFrame.Kindly give your valuable suggestions.
Not really the right direction. You original panel is under the control of layout manager, this means that when you add the JInternalFrame to it, the layout manager wants to try and layout it out.
Generally speaking, a JInternalFrame wants to reside in a container which is unmanaged, allowing it to be positioned and sized independently of the content.
A possible solution might be to take advantage of the glass pane for the JInternalFrame instead, for more details see How to Use Root Panes
Another solution might be to use a JLayeredPane. Basically, you would start by setting the layout manager of the JLayeredPane to something link BorderLayout add the first panel to it and then add a second, transparent pane, with no layout, above it. You would add the JInternalFrames to this second panel.
See How to Use Layered Panes for more details
The question that jumps out at me though is...why? Why wouldn't you just use some kind of dialog instead? See How to Make Dialogs for more details
What is it what you really want?
You wrote you already have your content pane added to your frame. JDesktopPane has to have its own space reserved. If you don't have or you don't want to reserve space for the internal frames in your main frame, then maybe you don't even want it to be part of the main frame. In this case you might want to use child JDialogs instead of JInternalFrames.
So either add your JDesktopPane to your main frame (having its space reserved) or use child JDialogs which can be modal or not and can overlap any part of the main frame. JInternalFrames are only visible in the area of the JDesktopPane while child JDialogs can "float" over your main frame.
Check out this Oracle documentation: How to Use Internal Frames
And How to Make Dialogs.