/*-
 * Copyright © 2009 Diamond Light Source Ltd.
 *
 * This file is part of GDA.
 *
 * GDA is free software: you can redistribute it and/or modify it under the
 * terms of the GNU General Public License version 3 as published by the Free
 * Software Foundation.
 *
 * GDA 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 GDA. If not, see <http://www.gnu.org/licenses/>.
 */

package uk.ac.gda.dal.csswidgets.figures;

import java.io.InputStream;

import org.csstudio.sds.ui.figures.BorderAdapter;
import org.csstudio.sds.ui.figures.CrossedOutAdapter;
import org.csstudio.sds.ui.figures.IBorderEquippedWidget;
import org.csstudio.sds.ui.figures.ICrossedFigure;
import org.csstudio.sds.ui.figures.IRhombusEquippedWidget;
import org.csstudio.sds.ui.figures.RhombusAdapter;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
import org.eclipse.draw2d.Graphics;
import org.eclipse.draw2d.Shape;
import org.eclipse.draw2d.geometry.Point;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Display;

/**
 * An image figure that supports SVG.
 */
public final class SVGFigure extends Shape implements IAdaptable {
	private IBorderEquippedWidget _borderAdapter;
    private CrossedOutAdapter _crossedOutAdapter;
    private RhombusAdapter _rhombusAdapter;
	private IPath _path = new Path("");
	private Image _image = null;
	private int _imgWidth = 0;
	private int _imgHeight = 0;
	private int _yTranslate = 0;
	private int _xTranslateX = 0;
	private int _xTranslateY = 0;
	private Rectangle bound;
	
	/**
	 * We want to have local coordinates here.
	 * 
	 * @return True if here should used local coordinates
	 */
	@Override
	protected boolean useLocalCoordinates() {
		return true;
	}

	/**
	 * Fills the image. Nothing to do here.
	 * 
	 * @param gfx
	 *            The {@link Graphics} to use
	 */
	@Override
	protected void fillShape(final Graphics gfx) {
	}

	/**
	 * dispose the resources used by this figure
	 */
	public void dispose(){
		if ((_image != null) && !_image.isDisposed()) {
			_image.dispose();
			_image = null;
		}
		if ((_image != null) && !_image.isDisposed()) {
			_image.dispose();
			_image = null;
		}
		if ((_image != null) && !_image.isDisposed()) {
			_image.dispose();
			_image = null;
		}
	}
	
	/**
	 * Draws the outline of the image. Nothing to do here.
	 * 
	 * @param gfx
	 *            The {@link Graphics} to use
	 */
	@Override
	protected void outlineShape(final Graphics gfx) {
	}

	/**
	 * The main drawing routine.
	 * 
	 * @param gfx
	 *            The {@link Graphics} to use
	 */
	@Override
	public void paintFigure(final Graphics gfx) {
		bound = getBounds().getCopy();
		if (_image == null && !_path.isEmpty()) {
			InputStream imageStream = getClass().getResourceAsStream(_path.toString());
			_image = new Image(Display.getDefault(), imageStream);
			_imgWidth = _image.getBounds().width;
			_imgHeight = _image.getBounds().height;
		}
		if (_image != null)
			gfx.drawImage(_image, 0, 0, _imgWidth, _imgHeight, bound.x+_xTranslateX,bound.y+_yTranslate+_xTranslateY, _imgWidth, _imgHeight);
	}
	
	@Override
	public void paint(Graphics graphics) {
		paintFigure(graphics);
	}

	/**
	 * Sets the path to the image.
	 * 
	 * @param newval
	 *            The path to the image
	 */
	public void setFilePath(final IPath newval) {
		_path = newval;
		if (_image != null)
			_image.dispose();
		_image = null;
	}

	/**
	 * Returns the path to the image.
	 * 
	 * @return The path to the image
	 */
	public IPath getFilePath() {
		return _path;
	}
	
	public void setYTranslate(int newval){
		_yTranslate=newval;
	}
	
	public int getYTranslate(){
		return _yTranslate;
	}
	
	public void setXTranslate(int newval){
		_xTranslateX=newval;
		_xTranslateY=(int)(newval*0.53846);
	}
	
	public Point getXTranslate(){
		return new Point(_xTranslateX, _xTranslateY);
	}

	@SuppressWarnings("rawtypes")
	@Override
	public Object getAdapter(final Class adapter) {
		if (adapter == IBorderEquippedWidget.class) {
			if(_borderAdapter==null)
				_borderAdapter = new BorderAdapter(this);
			return _borderAdapter;
		} 
		else if(adapter == ICrossedFigure.class) {
            if(_crossedOutAdapter==null)
                _crossedOutAdapter = new CrossedOutAdapter(this);
            return _crossedOutAdapter;
        } 
		else if(adapter == IRhombusEquippedWidget.class) {
            if(_rhombusAdapter==null)
                _rhombusAdapter = new RhombusAdapter(this);
            return _rhombusAdapter;
        }
		return null;
	}
	
}