content: /*
   * -----------------------------------------------------------------------
   * Copyright 2012 - Alistair Rutherford - www.netthreads.co.uk
   * -----------------------------------------------------------------------
   * 
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   * 
   *     http://www.apache.org/licenses/LICENSE-2.0
   * 
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   * 
   */
  
  package com.netthreads.gdx.app.layer;
  
  import com.badlogic.gdx.Gdx;
  import com.badlogic.gdx.Input.Keys;
  import com.badlogic.gdx.graphics.Color;
  import com.badlogic.gdx.graphics.g2d.TextureRegion;
  import com.badlogic.gdx.scenes.scene2d.ui.Image;
  import com.badlogic.gdx.scenes.scene2d.ui.Label;
  import com.badlogic.gdx.scenes.scene2d.ui.Skin;
  import com.badlogic.gdx.scenes.scene2d.ui.Table;
  import com.netthreads.gdx.app.Box2DTest;
  import com.netthreads.gdx.app.definition.AppTextureDefinitions;
  import com.netthreads.gdx.app.definition.AppEvents;
  import com.netthreads.libgdx.director.AppInjector;
  import com.netthreads.libgdx.director.Director;
  import com.netthreads.libgdx.scene.Layer;
  import com.netthreads.libgdx.texture.TextureCache;
  import com.netthreads.libgdx.texture.TextureDefinition;
  
  /**
   * Scene layer.
   * 
   */
  public class AboutLayer extends Layer
  {
  	private static final String UI_FILE = "data/uiskin.json";
  	private static final String URL_LABEL_FONT = "default-font";
  
  	private Table table;
  	private TextureRegion logo;
  	private Skin skin;
  	private Label urlLabel;
  	private Label versionLabel;
  
  	/**
  	 * The one and only director.
  	 */
  	private Director director;
  
  	/**
  	 * Singletons.
  	 */
  	private TextureCache textureCache;
  
  	/**
  	 * About layer.
  	 * 
  	 * @param stage
  	 */
  	public AboutLayer(float width, float height)
  	{
  		setWidth(width);
  		setHeight(height);
  
  		director = AppInjector.getInjector().getInstance(Director.class);
  
  		textureCache = AppInjector.getInjector().getInstance(TextureCache.class);
  
  		Gdx.input.setCatchBackKey(true);
  
  		loadTextures();
  
  		buildElements();
  
  	}
  
  	/**
  	 * Load view textures.
  	 * 
  	 */
  	private void loadTextures()
  	{
  		skin = new Skin(Gdx.files.internal(UI_FILE));
  
  		TextureDefinition definition = textureCache.getDefinition(AppTextureDefinitions.TEXTURE_LIBGDX_LOGO);
  		logo = textureCache.getTexture(definition);
  	}
  
  	/**
  	 * Build view elements.
  	 * 
  	 */
  	private void buildElements()
  	{
  		// ---------------------------------------------------------------
  		// Background.
  		// ---------------------------------------------------------------
  		Image image = new Image(logo);
  
  		image.setWidth(getWidth());
  		image.setHeight(getHeight());
  
  		// ---------------------------------------------------------------
  		// Labels
  		// ---------------------------------------------------------------
  		urlLabel = new Label("www.netthreads.co.uk", skin, URL_LABEL_FONT, Color.WHITE);
  
  		versionLabel = new Label(Box2DTest.VERSION_TEXT, skin, URL_LABEL_FONT, Color.WHITE);
  
  		// ---------------------------------------------------------------
  		// Table
  		// ---------------------------------------------------------------
  		table = new Table();
  
  		table.setSize((int) getWidth(), (int) getHeight());
  
  		table.row();
  		table.add(urlLabel).expandY().expandX();
  		table.row();
  		table.add(image);
  		table.row();
  		table.add(versionLabel).expandY().expandX();
  
  		table.pack();
  
  		table.setFillParent(true);
  
  		addActor(table);
  	}
  
  	/**
  	 * Catch escape key.
  	 * 
  	 */
  	@Override
  	public boolean keyUp(int keycode)
  	{
  		boolean handled = false;
  
  		if (keycode == Keys.BACK || keycode == Keys.ESCAPE)
  		{
  			director.sendEvent(AppEvents.EVENT_TRANSITION_TO_MENU_SCENE, this);
  
  			handled = true;
  		}
  
  		return handled;
  	}
  
  }
  