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/*******************************************************************************
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* Copyright (c) 2008, 2010 IBM Corporation and others.
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* All rights reserved. This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v1.0
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* which accompanies this distribution, and is available at
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* http://www.eclipse.org/legal/epl-v10.html
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*
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* Contributors:
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* Alexander Shatalin (Borland) - initial API and implementation
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*******************************************************************************/
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package org.eclipse.draw2d;
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import java.util.Iterator;
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import org.eclipse.draw2d.geometry.Point;
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import org.eclipse.draw2d.geometry.PointList;
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/**
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* Base superclass for all polylines/polygons
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*
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* @since 3.5
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*/
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public abstract class AbstractPointListShape extends Shape {
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PointList points = new PointList();
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/**
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* @see org.eclipse.draw2d.IFigure#containsPoint(int, int)
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*/
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public boolean containsPoint(int x, int y) {
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if (!super.containsPoint(x, y)) {
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return false;
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}
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return shapeContainsPoint(x, y) || childrenContainsPoint(x, y);
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}
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/**
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* Returns <code>true</code> if the point <code>(x, y)</code> is contained
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* within one of the child figures.
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*
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* @param x
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* The X coordinate
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* @param y
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* The Y coordinate
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* @return <code>true</code> if the point (x,y) is contained in one of the
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* child figures
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*/
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protected boolean childrenContainsPoint(int x, int y) {
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for (Iterator it = getChildren().iterator(); it.hasNext();) {
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IFigure nextChild = (IFigure) it.next();
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if (nextChild.containsPoint(x, y)) {
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return true;
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}
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}
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return false;
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}
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/**
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* Returns <code>true</code> if the point <code>(x, y)</code> is contained
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* within this figure.
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*
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* @param x
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* The X coordinate
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* @param y
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* The Y coordinate
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* @return <code>true</code> if the point (x,y) is contained in this figure
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*/
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abstract protected boolean shapeContainsPoint(int x, int y);
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/**
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* Adds the passed point to this figure.
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*
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* @param pt
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* the Point to be added to this figure
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*/
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public void addPoint(Point pt) {
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points.addPoint(pt);
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repaint();
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}
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/**
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* @return the first point in this figure
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*/
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public Point getStart() {
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return points.getFirstPoint();
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}
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/**
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* Returns the last point in this Figure.
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*
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* @return the last point
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*/
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public Point getEnd() {
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return points.getLastPoint();
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}
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/**
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* Returns the points in this figure <B>by reference</B>. If the returned
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* list is modified, this figure must be informed by calling
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* {@link #setPoints(PointList)}. Failure to do so will result in layout and
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* paint problems.
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*
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* @return this Polyline's points
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*/
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public PointList getPoints() {
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return points;
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}
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/**
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* Inserts a given point at a specified index in this figure.
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*
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* @param pt
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* the point to be added
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* @param index
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* the position in this figure where the point is to be added
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*/
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public void insertPoint(Point pt, int index) {
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points.insertPoint(pt, index);
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repaint();
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}
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/**
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* Erases this figure and removes all of its {@link Point Points}.
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*/
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public void removeAllPoints() {
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erase();
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points.removeAllPoints();
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}
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/**
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* Removes a point from this figure.
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*
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* @param index
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* the position of the point to be removed
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*/
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public void removePoint(int index) {
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erase();
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points.removePoint(index);
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repaint();
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}
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/**
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* Sets the start point of this figure
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*
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* @param start
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* the point that will become the first point in this figure
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*/
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public void setStart(Point start) {
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if (points.size() == 0) {
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addPoint(start);
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} else {
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setPoint(start, 0);
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}
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}
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/**
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* Sets the end point of this figure
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*
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* @param end
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* the point that will become the last point in this figure
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*/
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public void setEnd(Point end) {
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if (points.size() < 2) {
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addPoint(end);
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} else {
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setPoint(end, points.size() - 1);
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}
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}
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/**
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* Sets the points at both extremes of this figure
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*
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* @param start
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* the point to become the first point in this figure
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* @param end
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* the point to become the last point in this figure
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*/
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public void setEndpoints(Point start, Point end) {
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setStart(start);
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setEnd(end);
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}
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/**
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* Sets the point at <code>index</code> to the Point <code>pt</code>. If
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* you're going to set multiple Points, use {@link #setPoints(PointList)}.
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*
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* @param pt
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* the point
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* @param index
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* the index
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*/
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public void setPoint(Point pt, int index) {
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erase();
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points.setPoint(pt, index);
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repaint();
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}
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/**
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* Sets the list of points to be used by this figure. Removes any previously
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* existing points. This figure will hold onto the given list by reference.
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*
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* @param points
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* new set of points
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*/
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public void setPoints(PointList points) {
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erase();
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this.points = points;
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repaint();
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}
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}
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