UIDialogBox.java

package org.terasology.rendering.gui.components;

import org.lwjgl.input.Mouse;
import org.lwjgl.opengl.Display;
import org.terasology.rendering.gui.framework.IClickListener;
import org.terasology.rendering.gui.framework.UIDisplayElement;
import org.terasology.rendering.gui.framework.UIDisplayWindow;

import javax.vecmath.Vector2f;


public class UIDialogBox extends UIDisplayWindow {
    private UIWindowTitle _title;
    private UIButton _close;
    private Vector2f _prevMousePos = null;
    private boolean _dragged = false;

    public UIDialogBox(String title, Vector2f size) {
        super();
        setSize(size);

        _title = new UIWindowTitle(new Vector2f(getSize().x * 0.55f, 19f), title);
        _title.setVisible(true);
        _title.getPosition().x = (getPosition().x + size.x / 2f) - _title.getSize().x / 2;
        _title.setTitle(title);


        _close = new UIButton(new Vector2f(19f, 19f));

        _close.getPosition().x = getSize().x - 25f;
        _close.setVisible(true);
        _close.getLabel().setText("");

        _close.addClickListener(new IClickListener() {
            public void clicked(UIDisplayElement element) {
                close(true);
            }
        });

        windowStyleSetup();

        addDisplayElement(_close);
        addDisplayElement(_title);
    }

    public void update() {
        Vector2f mousePos = new Vector2f(Mouse.getX(), Display.getHeight() - Mouse.getY());
        if (intersects(mousePos)) {
            if (_mouseDown) {
                _focused = true;
                if (_title.intersects(mousePos)) {
                    _dragged = true;
                    if (_prevMousePos == null) {
                        _prevMousePos = new Vector2f(mousePos);
                    }
                }
            }
        }

        if (_dragged) {
            drag(new Vector2f(_prevMousePos.x - mousePos.x, _prevMousePos.y - mousePos.y));
            _prevMousePos = new Vector2f(mousePos);
        }

        if (!_mouseDown || !_dragged || _mouseUp) {
            _dragged = false;
            _mouseDown = false;
            _prevMousePos = null;
            _mouseUp = false;
            _focused = false;
        }

        super.update();
    }

    public void resize() {
        _title.setSize(new Vector2f(getSize().x * 0.55f, 19f));
        _title.getPosition().x = getSize().x / 2f - _title.getSize().x / 2;
        _title.resize();
        _style = null;
        _close.getPosition().x = getSize().x - 25f;
        windowStyleSetup();
    }

    public void windowStyleSetup() {
        setStyle("border-image-top", "engine:gui_menu 168/512 5/512 260/512 89/512 5");
        setStyle("border-image-right", "engine:gui_menu 4/512 81/512 428/512 94/512 4");
        setStyle("border-image-bottom", "engine:gui_menu 168/512 4/512 260/512 175/512 4");
        setStyle("border-image-left", "engine:gui_menu 4/512 81/512 256/512 94/512 4");

        setStyle("border-corner-topleft", "engine:gui_menu 256/512 89/512");
        setStyle("border-corner-topright", "engine:gui_menu 428/512 89/512");
        setStyle("border-corner-bottomright", "engine:gui_menu 428/512 175/512");
        setStyle("border-corner-bottomleft", "engine:gui_menu 256/512 175/512");

        setStyle("background-image", "engine:gui_menu 168/512 76/512 260/512 94/512");

        _close.setClassStyle("button", "background-image: engine:gui_menu 19/512 19/512 73/512 155/512");
        _close.setClassStyle("button-mouseover", "background-image: engine:gui_menu 19/512 19/512 54/512 155/512");
        _close.setClassStyle("button-mouseclick", "background-image: engine:gui_menu 19/512 19/512 92/512 155/512");
    }

}