Creating Hover Effect for JButton

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Creating Hover Effect for JButton

 
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  #1
May 13th, 2008
Hello

I'd like to create a hover effect for JButtons, but i can't find it for the moment.

It doesn't have to be antything spectacular, it just has to be visible.

Thanks in advance.
Greets, K?!.
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Re: Creating Hover Effect for JButton

 
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  #2
May 13th, 2008
Do you mean a tooltip, where text is displayed over a "hovered " button ?
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Re: Creating Hover Effect for JButton

 
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  #3
May 13th, 2008
No, something that changes about the button.
Like a link on a webpage: e.g. it gets underlined when the arrow hovers above it.

Thanks in advance.
K?!
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Re: Creating Hover Effect for JButton

 
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  #4
May 13th, 2008
You can do whatever you want when the mouse enters or leaves the button
java Syntax (Toggle Plain Text) 
  1. jButton1.addMouseListener(new java.awt.event.MouseAdapter() {
  2.     public void mouseEntered(java.awt.event.MouseEvent evt) {
  3.         jButton1.setBackground(Color.GREEN);
  4.     }
  5.     public void mouseExited(java.awt.event.MouseEvent evt) {
  6.         jButton1.setBackground(UIManager.getColor("control"));
  7.     }
  8. });
or to just underline
java Syntax (Toggle Plain Text) 
  1. jButton1.addMouseListener(new java.awt.event.MouseAdapter() {
  2.     Font originalFont = null;
  3.  
  4.     public void mouseEntered(java.awt.event.MouseEvent evt) {
  5.         originalFont = jButton1.getFont();
  6.         Map attributes = originalFont.getAttributes();
  7.         attributes.put(TextAttribute.UNDERLINE, TextAttribute.UNDERLINE_ON);
  8.         jButton1.setFont(originalFont.deriveFont(attributes));
  9.     }
  10.  
  11.     public void mouseExited(java.awt.event.MouseEvent evt) {
  12.         jButton1.setFont(originalFont);
  13.     }
  14. });
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Re: Creating Hover Effect for JButton

 
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  #5
May 14th, 2008
hi,
first add mouse listener to the button.
and change the background to the button in the following function
public void mouseEntered(MouseEvent e){
button.setBackground(Color.cyan);
}
public void mouseExited(MouseEvent e){
button.setBackground(Color.gray);
}
you also change font size,font color,etc;

try it..
Thanks and regards,
Suresh Kumar.R
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Re: Creating Hover Effect for JButton

 
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  #6
May 14th, 2008
Thanks for the help already.

It should work but there's still one problem.
I'm using an array of buttons (12). Somehow i'd have to be able to access the number of the button in the array. I was told to use the actionCommand for the actionListener. Like that i was able to use "getActionCommand" on the event to get the card's number.

Any options to get the card's number from the MouseEvent?

Thanks in advance.
Greets, K?!
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Re: Creating Hover Effect for JButton

 
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  #7
May 14th, 2008
getComponent() will provide the component that initiated the mouse event. If the info you need is just the text on the button then this will get it
Java Syntax (Toggle Plain Text) 
  1.     public void mouseExited(java.awt.event.MouseEvent evt) {
  2.         JButton button = (JButton)evt.getComponent();
  3.         System.out.println(button.getText());
  4.     }
If you need some other info, you can extend JButton to keep a reference to your Card object (or whatever object the button represents) and cast to that object instead.
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Re: Creating Hover Effect for JButton

 
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  #8
May 15th, 2008
Well, the problem is, the buttons don't have any text. Only an image of a card.
That's why i was told to use "setActionCommand()" and "getActionCommand()".

I tried to use getActionCommand() on the component (the button that was obtained by "getComponent()" ofcourse).

But it doesn't seem to be possible.

There's one thing i don't understand:
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If you need some other info, you can extend JButton to keep a reference to your Card object (or whatever object the button represents) and cast to that object instead.
I don't know how i should do that, and if it's difficult, i'd like a simple solution because we almost have to finish the project.

Is there any way to get the action command? I used that before and the action commands already contain the right numbers.

Thanks for the help.
And thanks in advance for further help.

Greets, K?!.
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Re: Creating Hover Effect for JButton

 
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  #9
May 15th, 2008
By the way, freshface001,

I thought your suggestion was the same like Ezzaral's, so i decided to copy his code instead.
Is it really the same or am i wrong?

Thanks for helping.
Greets.
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Re: Creating Hover Effect for JButton

 
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  #10
May 15th, 2008
Ok guys, found it .

In stead of trying to do this:
btnCard[evt.getComponent().getActionCommand()].setBackground(Color.GREEN);
I can do this:
Java Syntax (Toggle Plain Text) 
  1. evt.getComponent().setBackground(Color.GREEN);

Thanks for helping me out .
Greets K?!
Last edited by K?!; May 15th, 2008 at 9:41 am.
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