I have this code below to create a page inside of a tab.
I want each layout in one row of the overall box layout but i want the elements to stay in their original size and not expand to fill the width of the overall window. does anyone know what lines of code i need to change or what is the best way of doing this?! The image attached shows what it looks like at the moment
public void createPage4() {
panel4 = new JPanel();
panel4.setLayout(new BoxLayout(panel4, BoxLayout.Y_AXIS));
navigatePanel = new JPanel();
navigatePanel.setLayout(new BoxLayout(navigatePanel, BoxLayout.X_AXIS));
previousButton.setText("Previous");
previousButton.setEnabled(false);
navigatePanel.add(previousButton);
navigatePanel.add(Box.createHorizontalStrut(10));
indexTextField.setHorizontalAlignment(JTextField.CENTER);
navigatePanel.add(indexTextField);
navigatePanel.add(Box.createHorizontalStrut(10));
ofLabel.setText("of");
navigatePanel.add(ofLabel);
navigatePanel.add(Box.createHorizontalStrut(10));
maxTextField.setHorizontalAlignment(JTextField.CENTER);
maxTextField.setEditable(false);
navigatePanel.add(maxTextField);
navigatePanel.add(Box.createHorizontalStrut(10));
nextButton.setText("Next");
nextButton.setEnabled(false);
navigatePanel.add(nextButton);
panel4.add(navigatePanel);
displayPanel = new JPanel();
displayPanel.setLayout(new GridLayout(5, 2, 4, 4));
firstNameLabel.setText("First Name:");
displayPanel.add(firstNameLabel);
displayPanel.add(firstNameTextField);
lastNameLabel.setText("Last Name:");
displayPanel.add(lastNameLabel);
displayPanel.add(lastNameTextField);
panel4.add(displayPanel);
}
image
BoxLayout accepting Min, Max and PreferredSize that came from JComponents
I want each layout in one row of the overall box layout but i want the elements to stay in their original size and not expand to fill the width of the overall window
I'd be to use proper LayoutManager, FlowLayout accepting only PreferredSize, and/or all JComponents layed by GridBagLayout without defininitions of GridBagConstraints stays unchanged on containers resize
doesn't make me sence (my view) for why reason (sure this is your job), but for better help sooner post an SSCCE
The easiest way is to add your panel4 to an other panel that uses GridBagLayout and then add that panel to the container. Then it will be centered and nothing will stretch on resize.
JPanel centeredPanel = new JPanel(new GridBagLayout());
centeredPanel.add(panel4); // add this panel to the container
You should also construct the textfields with a specified number of columns, like
indexTextField = new JTextField(20);
Related
I'm trying to fix the height of the "amountField" text field, but I can't.
I would like the height of amountField to have the same height as the JComboBox that it's above, so it looks better.
Right now, the JTextField looks very tall compared with the rest of design.
I've tried everything that I've read in this forum, but nothing seems to work.
I don't know if it's relevant, but this whole JPanel (WithdrawalScreen) is inside another JPanel with BorderLayout. This panel is the center part of it
Thanks
PictureHere
public class WithdrawalScreen extends JPanel {
Public JPanel init() {
this.setLayout(new GridLayout(0,1));
account = new JLabel("account");
accountSelect = new JComboBox(labels);
amount = new JLabel("amount");
amountField = new JTextField("");
submit = new JButton("SUBMIT");
this.add(account);
this.add(accountSelect);
this.add(amount);
this.add(amountField);
this.add(submit);
return this;
}
}
Try creating the Grid Layout with 5 rows and 1 column. I think the height is messed up because you are not setting the constructor arguments properly.
new GridLayout(5,1);
Grid layout will stretch the component and give the same size to all of its components. In order to keep the "default" size of each component, you can use BoxLayout with BoxLayout.Y_AXIS parameter in its constructor. Another way would be to use a dummy-nested JPanel with another layout. Let's say FlowLayout.
JTextField textField = new JTextField(10);
JPanel nestedPanel = new JPanel(new FlowLayout());
nestedPanel.add(textField);
gridLayoutPanel.add(nestedPanel);
JTextField will not be stretched. nestedPanel will be. Do some experiments yourself and you will find the way that fits your needs.
A link that will help you: A visoual guide to Layout Managers.
I want to add the possibility for my users to add a comment on a form. To display them, I created JPanel inside a simple JScrollPane. I set the layout of this JPanel to BoxLayout because I wish to add them all in only one column and it seemed to be the easiest way by calling BoxLayout.Y_AXIS in the constructor. I also tried GridLayout and GridBagLayout but it was not what I was looking for.
My problem is that when a JPanel has the BoxLayout layout, it's width automatically is the same as it's container, but my container is a JScrollPane and the caret hides the right side of my comment!
You can see the JTextField and a JButton on the bottom left, here's the code on the click event :
private void btnAjoutCommentaireActionPerformed(java.awt.event.ActionEvent evt) {
//I take the text from the JTextField and format it to html
String formattedComment = "<html><br><div style='width:280px;'>" +
txtArCommentaire.getText().replaceAll("\n", "<br>") +
"</div><br></html>";
JLabel label = new JLabel(formattedComment);
//I add a blue border
label.setBorder(new TitledBorder(new EtchedBorder(Color.lightGray, Color.blue), ConfigUser.getCu().toString()));
//this below doesn't work
label.setSize(280, 200);
//I tried adding a JPanel in between but it didn't really worked out
//JPanel panel = new JPanel();
//panel.setLayout(new GridLayout(1, 1));
//panel.setSize(297, 200);
//panel.add(label);
///pnlCommentaire is the JPanel inside the JScrollPane
pnlCommentaire.setLayout(new BoxLayout(pnlCommentaire, BoxLayout.Y_AXIS));
pnlCommentaire.add(label);
pnlCommentaire.revalidate();
pnlCommentaire.repaint();
}
As you can see I tried to adust the size in html using style='width:280px'and on the JLabel using label.setSize(280, 200); but none of them worked.
Do you have any idea on how I could resize this Jlabel?
EDIT :
I added a margin-right property to the div so that I can at least fully see the text in the JLabel but the right border is still hidden.
String formattedComment = "<html><br><div style='width:280px;margin-right:50px;'>" +
txtArCommentaire.getText().replaceAll("\n", "<br>") +
"</div><br></html>";
I would like to achieve the below layout.
There are 6 panels. The 4 buttons at the top are one panel, and the 3 buttons at the right side of the image are also in one panel. Apart from those two there are 4 other panels as indicated by the borders. I tried the below code but displays everything in a scattered way.
mainPanel.add(topToolBarPanel,BorderLayout.PAGE_START);
mainPanel.add(lefsideToolBarPanel,BorderLayout.LINE_START);
mainPanel.add(descriptionPanel,BorderLayout.LEFT);
mainPanel.add(mapPanel,BorderLayout.CENTER);
mainPanel.add(propertiesPanel,BorderLayout.EAST);
mainPanel.add(tablePanel,BorderLayout.PAGE_END);
How can I achieve the design as shown in the image? I need all the panels to be arranged inside that mainPanel. I cannot use null layout though. Please advice.
After trashgod's answer :
JPanel gridPanel = new JPanel(new GridLayout(1, 0));
gridPanel.add(jInternalFrame1);
gridPanel.add(descriptionPanel);
mainPanel.add(gridPanel, BorderLayout.LINE_START);
mainPanel.add(topToolBarPanel,BorderLayout.PAGE_START);
mainPanel.add(tablePanel,BorderLayout.PAGE_END);
mainPanel.add(mapPanel,BorderLayout.CENTER);
mainPanel.add(PropertiesPanel,BorderLayout.LINE_END);
What I get :
Add lefsideToolBarPanel and descriptionPanel to a panel having GridLayout; add the new panel to the BorderLayout.
Panel p new Panel(new GridLayout(1, 0));
p.add(lefsideToolBarPanel);
p.add(descriptionPanel);
//mainPanel.add(lefsideToolBarPanel, BorderLayout.LINE_START);
//mainPanel.add(descriptionPanel, BorderLayout.LEFT);
mainPanel.add(p, BorderLayout.LINE_START);
There is no BorderLayout.LEFT. See also A Visual Guide to Layout Managers.
Addendum: Your updated question shows elements of topToolBarPanel, which should be added to PAGE_START, rather than LINE_START.
//mainPanel.add(topToolBarPanel,BorderLayout.LINE_START);
mainPanel.add(topToolBarPanel,BorderLayout. PAGE_START);
The width of the propertiesPanel and height of the tablePanel need to be increased. I used setSize()…
For the propertiesPanel, you can override getPreferredSize(), as discussed here. For the tablePanel, override getPreferredScrollableViewportSize() to customize the size of the table's enclosing JScrollPane, for example.
I suggest using a JLabel as your "layout" to use exact positioning of yout objects with setBounds(x, y, width, height). It would look similar to this :
JButton button = new JButton("Text or Image");
JLabel backgr = new JLabel();
JFrame frame = new JFrame("JLabel as Layout");
button.setBounds(100, 200, 340, 40);
backgr.add(button);
frame.add(backgr);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(600, 600);
frame.setLocation(40, 40);
frame.validate();
frame.setVisible(true);
I know that this is just a quick example for you, but I think it should do for explanation... so just add everything on the backgr JLabeland your good to go. Quick and dirty example but the a way to go.
I am trying to make a panel to have 4 items on top. these are a JLabel, JTextField, JLabel and JTextField.
In the center I need a JTextArea and to the left of it a JList that is scrollable.
On the bottom I need 3 buttons.
What would be the best layout manager for this and how should I go about it?
Would having just 3 columns be a good idea?
Heres what I have so far:
JPanel panel = new JPanel();
JTextField IDLabel = new JLabel("ID: ");
IDLabel.setBounds(10, 10, 80, 25);
panel.add(IDLabel);
JTextArea IDText = new JTextField(5);
IDText.setBounds(100, 10, 160, 25);
panel.add(IDText);
JLabel TitleLabel = new JLabel("Title: ");
TitleLabel.setBounds(10, 10, 80, 25);
panel.add(TitleLabel);
JTextField TitleText = new JTextField(10);
TitleText.setBounds(100, 10, 160, 25);
panel.add(TitleText);
JList list = new JList(new String[]{"test1", "test22"});
list.setFixedCellWidth(150);
list.setFixedCellHeight(50);
list.setFont(new Font("Serif",Font.BOLD,16));
list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
panel.add(list);
JTextArea BodyArea = new JTextArea();
BodyArea.setSize(200, 200);
BodyArea.setText("Test area");
panel.add(BodyArea);
You will mostly likely need to use a combination of layouts (AKA compound layouts), for example
North Panel
Create a JPanel and assign it a FlowLayout or GridBagLayout or GridLayout depending on what you want to achieve.
Add the JLabel, JTextField, JLabel, JTextField to it.
Center Panel
Create a JPanel with BorderLayout. Add the JTextArea to the CENTER position and the JList to the WEST position
South Panel
Craete a JPanel with a FlowLayout or GridBagLayout or GridLayout depending on what you want to achieve.
Add the buttons to it.
Putting it together
Create a JPanel with a BorderLayout, add the "north" panel to the NORTH position, the "center" panel to the CENTER position and the "south" panel to the SOUTH position
You could use a single container and a GridBagLayout, but that's a lot of work.
Take a look at Laying Out Components Within a Container for more details
Maybe start with a BorderLayout for the main layout. Then you can add components to the PAGE_START (NORTH), LINE_START (WEST) and CENTER and PAGE_END (SOUTH). Check out the section from the Swing tutorial on Using Layout Manager, for more information and examples.
Of course you would also use panels when you want to display multiple components in a single area. So your buttons would first be added to panels.
Also, follow standard naming conventions. Variable names should NOT start with an upper case character( ie. BodyArea, TitleText). You got variable like (panel, list) correct so be consistent.
I have:
public class BaseStationFrame1 extends JFrame
{
JButton activateButton;
JButton deactivateButton;
BaseStation bs;
JTextField networkIdField;
JTextField portField;
public BaseStationFrame1(BaseStation _bs){
bs = _bs;
setTitle("Base Station");
setSize(600,500);
setLocation(100,200);
setVisible(true);
activateButton = new JButton("Activate");
deactivateButton = new JButton("Deactivate");
Container content = this.getContentPane();
content.setBackground(Color.white);
content.setLayout(new FlowLayout());
content.add(activateButton);
content.add(deactivateButton);
networkIdField = new JTextField("networkId : "+ bs.getNetworkId());
networkIdField.setEditable(false);
content.add(networkIdField);
portField = new JTextField("portId : "+ bs.getPort());
portField.setEditable(false);
content.add(portField);}
}
My problem is that i don't want the two TextFields to appear on the right of Activate and Deactivate buttons but below them. How can i fix that?
Specify your layout manager, like this:
content.setLayout(new GridLayout(2,2));
That would use the Grid Layout Manager to establish a grid with 2 columns and 2 rows, that your components would then be placed in.
The layout manager you are currently using, FlowLayout, only adds contents onto the end of the current row. it will wrap around once it reaches the constrained edge of the pane, though.
You should also check the other layout managers here
You could alternatively use GridBagLayout , but you will have to specify a GridBagConstraints object you then add alongside the individual elements, like so:
content.add(networkIdField, gridConstraints);
see more on that in the linked tutorial.
can I suggest that you use a Null Layout for the parent component?
setLayout(null);
then use a setBounds(xPos,yPos, Width, Height);
to position the components on the panel etc?
Doing this will prevent Java's UI Manager to manage the components to the Frame, Panel etc.
That seems to be the easiest and less painful way.
Regards