I need to insert numbers of JButtons in a JTextPane. It is done via insertComponent() method. but there is a problem, the components are in a line and JScrollPane doesn't scroll neither vertically nor horizontally (however I just want vertically). what should I do?
A simple solution is to add spaces between the buttons, these allow the JTextPane to wrap the buttons.
Alternatively, you can insert a single JComponent and add the buttons as children of that single component. This would allow you to use any layout you like for the buttons (FlowLayout is probably what you want).
Related
I would like to create the main menu for my program and I have difficulties with Swing.
How would you code an alignment like this?
The middle elements would be the options like exit or settings and this window should be able to be resized and its contents should get bigger proportionally.
Single column GridLayout with vertical padding declared in the constructor. A grid layout will stretch components to fit the available space.
Add a large EmptyBorder to the JPanel that contains the 3 buttons, and that's the job done.
I'm working on a simple app that has:
2 TextFields with Labels: name and description
Add button
Panel that is filled with name/description labels and with radio buttons to select records and manipulate with them (edit / delete -> these buttons appear when radio button is selected).
I tried the following layouts composition:
2 Panels with BoxLayout (YAXIS) which contain text field and their labels
Panel with GridBagLayout to have 2 panels with text fields and a button to add data.
Panel with BoxLayout (YAXIS) to be filled with records after button press
Panel with GridBagLayout that contains radio button and 2 labels with results of name and description text fields.
Here is a screenshot of what I came to:
As you can see there's a problem - Labels have no word wrap. If I use JTextArea for word wraping, then white background appears (setBackground(null) doesn't help).
I think that GridBagLayout is not good choice here or even there are too many inner panels. In fact it seems this task is common enough. What are good practices for apps UI building like that one?
The Problem you got with your JLabel is easy to handle. Because JLabels accept HTML Tags you can use this mechanic to automaticly wrap your text:
label.SetText(String.format("<html><div WIDTH=%d>%s</div><html>", width, text));
For the general Layout I prefer the GridbagLayout. With the GridbagLayout you only need on Layout-Typ. GridBagLayout is flexible and easy to use for your case.
If the Layout will get more complex you will probably need to stack different Layouts, to get the best handling.
I'm trying to build a simple interface for an assignment, in which multi-line word-wrapped input boxes can be stacked vertically in a single, fixed-width column. then the whole stack (if tall enough) has to scroll vertically inside of a scroll pane with the same fixed width and a fixed height.
The active box has to change height dynamically to fit the amount of text as it is being typed/deleted. This means the y position of all subsequent inputs in the column should change accordingly. A layout manager's job, right?
I started reading about the swing layouts, and it seemed like only the GridBagLayout could do this. Since this is my app's only interface window, it seemed like a clunky layout to achieve something simple.
So, which swing layout should I use, along with which text input class for word-wrapping and auto height adjustment? Thanks.
A BoxLayout might be what you are after for this use-case.
I'm fairly new to Java and I'm trying to create a GUI application with some labels, buttons, and textfields. The program is pretty simple and I just wanted to use a default layout, which is FlowLayout. I managed to place and size everything fine, but the only thing seem to be not working is the alignment. I want to place buttons and textfields with certain alignments, but whenever I set an alignment, it moves the text inside of whatever the object rather than the object itself. For example, I wrote:
button.setHorizontalAlignment(JButton.RIGHT);
but it seems like it aligns the text inside the button instead of the button itself.
Is there any way to align the button itself rather than the text inside of it?
I know the alignment stuff could be easier with some other type of layout (e.g. BoxLayout), but I just want to use the FlowLayout for this one, unless it is impossible to align them using the FlowLayout (which I don't think so).
Thanks in advance.
See the constructor FlowLayout(int align).
Constructs a new FlowLayout with the specified alignment and a default 5-unit horizontal and vertical gap. The value of the alignment argument must be one of FlowLayout.LEFT, FlowLayout.RIGHT, FlowLayout.CENTER, FlowLayout.LEADING, or FlowLayout.TRAILING.
It seems you are after a FlowLayout.RIGHT as seen in this answer (the combo and check box at the top).
I don't think you can do this with a FlowLayout alone.
My suggestions would be:
Consider switching to MigLayout which is a much more powerful layout mechanism. MigLayout basically lets you position you components within a flexible grid, and you can set the specific alignment of a component within each grid cell.
When you want alignment of subcomponents, it also often makes sense to put them inside a nested JPanel. You can then use a separate layout for this JPanel (BorderLayout perhaps?) which will enable you to get the exact alignment that you want.
setHorizontalAlignment of AbstractButton sets the horizontal alignment of the icon and text not the position of the button. AbstractButton's default is SwingConstants.CENTER.
If you want to align the button..set the position while adding it to the panel or frame..something like this....
p.add(button, BorderLayout.SOUTH);//using `BorderLayout`
Flow layouts are typically used to arrange buttons in a panel. It will arrange buttons left to right until no more buttons fit on the same line.
Guys, I need to put some buttons in a jscrollpanel, but the JScrollPane won't create a scroll vertically. I'm using a JPanel inside the JScrollPane which is using the simple FlowLayout layout. How can I make the JScrollPanel to scroll only in the vertical??
Problem:
Desired Solution:
Check out the Wrap Layout
The fact you use a JScrollPane changes quite a few things concerning the internal FlowLayout. indeed, when the FlowLayout tries to layout contained JButtons, it use for that the available space. In your case, you don't have limits to the space in the "scrollable client" of your JScrollPane. As a consequence, considering your FlowLayout has infinite space, it uses this space to display items according to it.
So the solution would be to change your scrollable client in order to limit its viewable area to the same than your JScrollPane's JViewport.
However, you would not even in this case have your line returns, as FlowLayout don't really well handle this case.
Were I to be you, I would of course choose an other layout. As GridLayout don't really well handles borders, i think the only reasonible standard layout you can use is GridBagLayout, althgough I fear your dynamic content constraints may require you something even more customizable.
JTextArea c = new JTextArea();
c.setLineWrap(true);
c.setWrapStyleWord(false);
This will wrap anything in a text area to the next line without creating a Horizontal Scroll.
Use the modified Flow Layout that I posted in this answer: How can I let JToolBars wrap to the next line (FlowLayout) without them being hidden ty the JPanel below them?
It will wrap to the next line and your scrollbar should scroll vertically.
scrollbar = new Scrollbar(Scrollbar.VERTICAL);
Or you could use a JList.
See this site for more info: http://docs.oracle.com/javase/tutorial/uiswing/components/list.html
the example class: ListDialog uses only a vertical scrollbar, when the window is resized or the elements don't fit the view.