/**********************************************
    * Copyright (C) 2010 Lukas Laag
    * This file is part of svgreal.
    * 
    * svgreal is free software: you can redistribute it and/or modify
    * it under the terms of the GNU General Public License as published by
    * the Free Software Foundation, either version 3 of the License, or
    * (at your option) any later version.
    * 
   * svgreal 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 General Public License for more details.
   * 
   * You should have received a copy of the GNU General Public License
   * along with svgreal.  If not, see http://www.gnu.org/licenses/
   **********************************************/
  package org.vectomatic.svg.edit.client.gxt.layout;
  
  import com.extjs.gxt.ui.client.widget.layout.LayoutData;
  
  /**
   * Class to position layers in containers which use
   * AbsoluteLayerLayout.
   * @author laaglu
   */
  public class AbsoluteLayerLayoutData extends LayoutData {
  	public static final int HORIZONTAL_ATTACH_LEFT = 0x01;
  	public static final int HORIZONTAL_ATTACH_RIGHT = 0x02;
  	public static final int VERTICAL_ATTACH_TOP = 0x04;
  	public static final int VERTICAL_ATTACH_BOTTOM = 0x08;
  	private int attachmentFlags;
  	private int horizontalOffset;
  	private int verticalOffset;
  	private int width;
  	private int height;
  	private int zIndex;
  	/**
  	 * Constructor
  	 * @param attachmentFlags
  	 * A combination of an horizontal attachment flag and
  	 * a vertical attachment flag
  	 * @param horizontalOffset
  	 * The distance to the horizontal attachment point
  	 * @param verticalOffset
  	 * The distance to the vertical attachment point
  	 * @param width
  	 * The width (if 0, it will adjust to the container width)
  	 * @param height
  	 * The height (if 0, it will adjust to the container height)
  	 * @param zIndex
  	 * The z index
  	 */
  	public AbsoluteLayerLayoutData(
  			int attachmentFlags,
  			int horizontalOffset,
  			int verticalOffset,
  			int width,
  			int height,
  			int zIndex) {
  		this.attachmentFlags = attachmentFlags;
  		assert((attachmentFlags & (HORIZONTAL_ATTACH_LEFT|HORIZONTAL_ATTACH_RIGHT)) != 0);
  		assert((attachmentFlags & (VERTICAL_ATTACH_TOP|VERTICAL_ATTACH_BOTTOM)) != 0);
  		this.horizontalOffset = horizontalOffset;
  		this.verticalOffset = verticalOffset;
  		this.width = width;
  		this.height = height;
  		this.zIndex = zIndex;
  	}
  	public boolean isAttachedLeft() {
  		return (attachmentFlags & HORIZONTAL_ATTACH_LEFT) != 0;
  	}
  	public boolean isAttachedRight() {
  		return (attachmentFlags & HORIZONTAL_ATTACH_RIGHT) != 0;
  	}
  	public boolean isAttachedTop() {
  		return (attachmentFlags & VERTICAL_ATTACH_TOP) != 0;
  	}
  	public boolean isAttachedBottom() {
  		return (attachmentFlags & VERTICAL_ATTACH_BOTTOM) != 0;
  	}
  	public int getHeight() {
  		return height;
  	}
  	public int getWidth() {
  		return width;
  	}
  	public int getHorizontalOffset() {
  		return horizontalOffset;
  	}
  	public int getVerticalOffset() {
  		return verticalOffset;
  	}
  	public int getZIndex() {
  		return zIndex;
  	}
  }