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  Making custom menus  (Read 533 times)
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Offline brollysan

Junior Member


Medals: 1



« Posted 2013-04-04 02:59:13 »

Is it at all possible to add eventlisteners to custom objects like strings or rectangles that enclose strings? What I want to achieve can be demonstrated by this image, the red dot would move up/down as up/down is pressed and E selects the current item. Once an item is selected the appropriate action is taken.

Offline opiop65

JGO Kernel


Medals: 130
Projects: 7
Exp: 3 years


Team Alluminum


« Reply #1 - Posted 2013-04-04 03:00:49 »

Use images. I'm sure there's a way to draw strings in different colors, probably using
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g.setColor(COLOR.WHATEVER)
but I don't like using straight up Java2D to do anything except for rendering my bufferedimage.

Offline opiop65

JGO Kernel


Medals: 130
Projects: 7
Exp: 3 years


Team Alluminum


« Reply #2 - Posted 2013-04-04 03:03:45 »

Actually I take that back. I used to render text menus in Java2D like this:
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public void renderText(String text, int x, int y, int size, int style, int color) {
      int r = (color & 0xff0000) >> 16;
      int g = (color & 0xff00) >> 8;
      int b = (color & 0xff);
      Color c = new Color(r, g, b);
      Font f = new Font("Verdana", style, size);
      this.g.setColor(c);
      this.g.setFont(f);
      this.g.drawString(text, x, y);
   }

It's pretty self explanatory.

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Offline brollysan

Junior Member


Medals: 1



« Reply #3 - Posted 2013-04-04 12:24:30 »

The drawing is fine, I can manage that atm, but the problem is adding actionevents to the strings.
Offline opiop65

JGO Kernel


Medals: 130
Projects: 7
Exp: 3 years


Team Alluminum


« Reply #4 - Posted 2013-04-04 12:37:13 »

Dont use action events. Just draw a circle and say when down arrow key is pressed, move circle draw location down next to the other string.

Offline BurntPizza
« Reply #5 - Posted 2013-04-04 15:44:11 »

Easy method is having your Canvas/JPanel/whatever implement an event Listener and test for the condition.
E.g. mouse clicks for intersection with a rectangle around your text:

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Rectangle buttonArea; //initialized elsewhere for readability

public void mousePressed(MouseEvent e) {
     if(buttonArea.contains(e.getPoint())) {
          //do stuff here, like flip to next screen, start game, etc.
    }
}


Just use KeyListener for keys, and change which String the dot is drawn next to, and also test for 'E' being pressed, and have that do whatever action you need.
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