Basically I want to hover over a jLabel and change its border to Bevel (raised) so as to appear clickable. The problem is when I hover over it the border changes but it moves all my other jlabels, as soon as I remove the mouse pointer from it they move back to where they were. Been driving me nuts can't seem to figure this out.
The only way I've found to stop this from happening is using absolute layout, problem is when I resize my window it eats some of the jLabels. Also tried putting that panel with absolute layout inside another panel which has another layout like box or border layout.
This happens with any of my jLabels, what am I missing?
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I create buttons using jlabels, so I can make a image into sort of a button. The only problem is, is that jlabels are square, therfore if i click somewhere within the square where the picture is not contained, it still runs the jlabel.MouseClickEvent. Is there any fix for this, or another component that i could use?
Ex. If i click this on the corner where the circle is not showing, but the square is still there, then the event fires.
Any fixes/different components to use? Thanks!
If you are just using simple Shapes for the images then you might be able to use the Shape Component found in Playing With Shapes.
The ShapeComponent will only respond to mouse events within the bounds of the Shape.
Otherwise the solution is to override the contains(...) method of your JLabel to check if the mouse point is in the bounds of your image, or in your case if the pixel at that location is not transparent.
I just recently started using Swing to create GUIs for programs, and it's been pretty fun to mess around with so far. However, I'm having an issue with a JPanel with the layout set to gridLayout. Right now it looks like this:
The grid on the right is a JPanel set to a GridLayout, with each cell being a bordered JLabel. The options on the left are also inside a JPanel, and the left JPanel and right JPanel are nested in a GridBagLayout set on a JFrame.
Essentially, my problem is that I want to "scale" the grid on the right so that each cell is a certain height and width. The grid itself will have a variable number of rows and columns, which are set when the program first starts up. Eventually, I plan to have the right JPanel in a JScrollPane (if that's how that works...), so I'm not really concerned about whether or not all of the grid shows up onScreen.
I tried setting the fill value for the gridLayout to "BOTH" and it gave me the following result:
This is closer to my intention, but I wanted the actual ImageIcon in the JLabels to fill the entire JLabel. Additionally, I would want the JLabels to be the same height and width. However, I don't know exactly how to do that. I've been messing around with it for a while now, and I'm not sure if I'm just too much of a noob with Swing, or if I'm missing something in the documentation.
In the end, I'd like the grid cells to be a fixed height and width, no matter the number of cells, and no matter whether it goes offscreen or doesn't fill it.
(Also, I just thought, maybe it's not the best idea to code this and then shove it in a JScrollPane later and expect it to perform the same.... I guess I'll just see what happens.)
but I wanted the actual ImageIcon in the JLabels to fill the entire JLabel.
Check out Darryl's Stretch Icon which will allow the icon to resize to file the space available for the JLabel.
I have java swing aplication where I use Borderlayout as layout. I put elements in EAST,CENTER and WEST. I want to change size of elements with mouse just like in NetBeans.
For example when I move mouse on the edge of the CENTER I need to show mouse resize cursor. And when I drag mouse on the edge, the CENTER will change size accordingly.
What is the best approach to do it?
You would need to use a JSplitPane. Simply nest them in the border layout. This is a good resource for examples.
I have an application that uses a JLabel and a JPanel. These components have a MatteBorder. When the components are created, the border is the default. When I click on the components, I set the border to a different thickness to make a select appearance. The problem comes when I want to unselect and I set the border to another thickness. This time the border is not modified and looks the same.
I'm not seeing what the problem is, because the first modification of the border thickness works fine.
Although this might be a hacky approach, try to repaint() the view, sometimes it just glitches.
I read this:
http://docs.oracle.com/javase/tutorial/uiswing/components/border.html
when working on my program.
I have a JPanel that contains a bunch of Swing JComponents, including some JSeparators that may be only one or two pixels wide. I want to let my users drag the items around, but it can be rather difficult to hit a one or two pixel wide line. Is there a way that I can give those JSeparators a wider "target" region for mouse clicks? The only thing I've been able to think of is to have my mouse handler listen for clicks on the JPanel, and if it gets any, run through the list of JSeparators, looking to see if any of them are within a couple of pixels of the mouse click.
Should that work? Is there a better way?
Add a fat EmptyBorder to the component.
If it already has a border, you can set a compound border using the current border then the empty border, or simpler, add the empty border (and listener) to a panel that contains the component. The latter will work better for components such as JButton, which have borders that change according to state and focus.