es.eucm.ead.editor.view.widgets.menu.Menu.java Source code

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Here is the source code for es.eucm.ead.editor.view.widgets.menu.Menu.java

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/**
 * eAdventure is a research project of the
 *    e-UCM research group.
 *
 *    Copyright 2005-2014 e-UCM research group.
 *
 *    You can access a list of all the contributors to eAdventure at:
 *          http://e-adventure.e-ucm.es/contributors
 *
 *    e-UCM is a research group of the Department of Software Engineering
 *          and Artificial Intelligence at the Complutense University of Madrid
 *          (School of Computer Science).
 *
 *          CL Profesor Jose Garcia Santesmases 9,
 *          28040 Madrid (Madrid), Spain.
 *
 *          For more info please visit:  <http://e-adventure.e-ucm.es> or
 *          <http://www.e-ucm.es>
 *
 * ****************************************************************************
 *
 *  This file is part of eAdventure
 *
 *      eAdventure is free software: you can redistribute it and/or modify
 *      it under the terms of the GNU Lesser General Public License as published by
 *      the Free Software Foundation, either version 3 of the License, or
 *      (at your option) any later version.
 *
 *      eAdventure is distributed in the hope that it will be useful,
 *      but WITHOUT ANY WARRANTY; without even the implied warranty of
 *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *      GNU Lesser General Public License for more details.
 *
 *      You should have received a copy of the GNU Lesser General Public License
 *      along with eAdventure.  If not, see <http://www.gnu.org/licenses/>.
 */
package es.eucm.ead.editor.view.widgets.menu;

import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.graphics.g2d.Batch;
import com.badlogic.gdx.math.Vector2;
import com.badlogic.gdx.scenes.scene2d.Actor;
import com.badlogic.gdx.scenes.scene2d.InputEvent;
import com.badlogic.gdx.scenes.scene2d.InputListener;
import com.badlogic.gdx.scenes.scene2d.ui.Skin;
import com.badlogic.gdx.scenes.scene2d.utils.Drawable;
import es.eucm.ead.editor.view.widgets.layouts.LinearLayout;

public class Menu extends LinearLayout {

    private Skin skin;

    private MenuStyle style;

    private boolean opened;

    private Vector2 auxVector = new Vector2();

    public Menu(Skin skin) {
        super(true);
        this.skin = skin;
        style = skin.get(MenuStyle.class);
        setVisible(false);
        addListener(new InputListener() {
            @Override
            public boolean touchDown(InputEvent event, float x, float y, int pointer, int button) {
                if (opened) {
                    setVisible(false);
                    // Resend touch down
                    auxVector.set(event.getStageX(), event.getStageY());
                    event.getStage().stageToScreenCoordinates(auxVector);
                    event.getStage().touchDown((int) auxVector.x, (int) auxVector.y, event.getPointer(),
                            event.getButton());
                }
                return false;
            }
        });
    }

    public MenuItem item(String label) {
        MenuItem item = new MenuItem(this, label, skin);
        addActor(item);
        return item;
    }

    public void selected(MenuItem menuItem, boolean pressed) {
        if (pressed || opened) {
            for (Actor item : getChildren()) {
                item.setVisible(false);
            }

            if (menuItem != null) {
                menuItem.setVisible(true);
                opened = true;
            } else {
                opened = false;
            }
        }
    }

    @Override
    public void setVisible(boolean visible) {
        opened = visible;
        if (!opened) {
            for (Actor a : getChildren()) {
                a.setVisible(false);
            }
        }
    }

    @Override
    public void draw(Batch batch, float parentAlpha) {
        batch.setColor(Color.WHITE);
        if (style.background != null) {
            style.background.draw(batch, getX(), getY(), getWidth(), getHeight());
        }
        super.draw(batch, parentAlpha);
    }

    @Override
    public Actor hit(float x, float y, boolean touchable) {
        Actor actor = super.hit(x, y, touchable);
        if (opened && actor == null) {
            actor = this;
        }
        return actor;
    }

    public static class MenuStyle {
        public Drawable background;
    }
}