guicomponant, GImageButton, pressed State?

Contributed Library Questions

pixelrese..

guicomponant, GImageButton, pressed State?

in Contributed Library Questions • 6 months ago

We work with guicomponant library, a great library, but we have a little probleme.

        String[] files;
        files = new String[] {
                "data/tjoff.jpg", "data/tjover.jpg", "data/tjdown.jpg"
            };
        btnCoins = new GImageButton(this, "data/tjmask.png", files, 150,10);

and the event handler

    public void handleImageButtonEvents(GImageButton imagebutton) {
        if (imagebutton == btnCoins){
            println("Coins - png images using transparency");
        }
    }

My question is, how can we have a pressed state? For moment there are three event, ROLL_OVER, ROLL_OUT and CLICKED but after a clic, the GImageButton return on it's basic image. We need to change the image of just pressed button up to an other was pressed ...
I'm french i dont know if i give good explanation. If you need some precision, tell me!

Thx!

Replies(4)

quarks

Re: guicomponant, GImageButton, pressed State?

6 months ago

I have moved the topic here because it is about a contributed library.

It looks like you are using Processing 1.5.1 - but which version of G4P are you using?

Unfortunately I am not sure what the actual problem is.
An image button can have upto 3 images

when the mouse is off the button
when the mouse is over the button
when the mouse is over the button and the mouse is pressed.

There are three possible events

CLICKED - mouse-button is clicked
PRESSED - mouse-button pressed when over the image button
RELEASED - mouse-button is released after being PRESSED. (This is only fired if the mouse has moved since the PRESSED event occured - if it has not moved then the CLICKED event would have been fired)

The default setting means that only PRESSED events are fired. To get the other events you need to use

button_variable_name.fireAllEvents(true);

pixelrese..

Re: guicomponant, GImageButton, pressed State?

6 months ago

Thx for putting my post in the right way.

I use the 1.7.6 of G4P (before 2.0, it's guicomponant instead of G4P).

And my problem is not really what you explain. I read the documentation and after some test, i can't put an image for a clicked image. I mean, there is a normal image, a roll over image and a pressed image but after being pressed, when click is released, the button return on its basic, normal image.

And i dont find a method on the GImageButton which permit to access image or image array.

quarks

Re: guicomponant, GImageButton, pressed State?

6 months ago

I mean, there is a normal image, a roll over image and a pressed image but after being pressed, when click is released, the button return on its basic, normal image.

That is normal behaviour for standard button. What you want is a toggle button but the library does not have any.

One solution would be to have a boolean variable that flips between true and false each time the button is clicked, and then based on the value of the boolean variable provide some other visual guide e.g. draw a box round the button for instance.

pixelrese..

Re: guicomponant, GImageButton, pressed State?

6 months ago

We do as you say. We use different image to represent 'toggle' button.

Thank for your reply.