svn-gvsig-desktop / branches / v2_0_0_prep / libraries / libFMap / src / org / gvsig / fmap / mapcontext / layers / GraphicLayer.java @ 21102
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/*
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* Created on 19-sep-2005
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*
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* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* For more information, contact:
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*
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* Generalitat Valenciana
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* Conselleria d'Infraestructures i Transport
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* Av. Blasco Ib??ez, 50
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* 46010 VALENCIA
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* SPAIN
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*
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* +34 963862235
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* gvsig@gva.es
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* www.gvsig.gva.es
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*
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* or
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*
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* IVER T.I. S.A
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* Salamanca 50
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* 46005 Valencia
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* Spain
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*
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* +34 963163400
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* dac@iver.es
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*/
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package org.gvsig.fmap.mapcontext.layers; |
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import java.awt.Graphics2D; |
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import java.awt.geom.Rectangle2D; |
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import java.awt.image.BufferedImage; |
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import java.util.ArrayList; |
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import java.util.Collection; |
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import javax.print.attribute.PrintRequestAttributeSet; |
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import org.cresques.cts.ICoordTrans; |
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import org.gvsig.data.ReadException; |
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import org.gvsig.fmap.geom.Geometry; |
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import org.gvsig.fmap.mapcontext.ViewPort; |
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import org.gvsig.fmap.mapcontext.rendering.legend.FGraphic; |
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import org.gvsig.fmap.mapcontext.rendering.symbols.FGraphicUtilities; |
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import org.gvsig.fmap.mapcontext.rendering.symbols.ISymbol; |
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import com.iver.utiles.swing.threads.Cancellable; |
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import com.vividsolutions.jts.index.ItemVisitor; |
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import com.vividsolutions.jts.index.SpatialIndex; |
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import com.vividsolutions.jts.index.quadtree.Quadtree; |
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/**
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* <p><code>GraphicLayer</code> represents a layer with graphical items, that are geometries with
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* a symbol and handlers associated.</p>
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*
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* <p>The internal graphical items are independent to each other and can be selected separately. There is a <i>bit set</i> to
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* define which item are selected. They, will be drawn with handlers, that according to the particular
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* implementation of each one, can allow user to move, center, deform, ... each graphical item.</p>
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*
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* @see FLyrDefault
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*/
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public class GraphicLayer extends FLyrDefault { |
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/**
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* Internal list with all graphic items of this layer.
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*
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* @see #addGraphic(FGraphic)
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* @see #clearAllGraphics()
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* @see #getGraphic(int)
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* @see #getGraphicByObjectTag(Object)
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* @see #inserGraphics(int, Collection)
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* @see #insertGraphic(int, FGraphic)
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* @see #removeGraphic(FGraphic)
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* @see #removeGraphic(int)
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* @see #getNumGraphics()
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*/
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private ArrayList graphics = new ArrayList(); |
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/**
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* Internal list with all symbols of this layer.
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*
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* @see #addSymbol(ISymbol)
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* @see #clearSymbolsGraphics()
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*/
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private ArrayList symbols = new ArrayList(); |
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/**
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* Describes a rectangle defined by a location (x, y) and dimension, that represents this layer position
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* and dimension.
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*
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* @see #getFullExtent()
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* @see #reCalculateFullExtent()
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*/
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private Rectangle2D fullExtent; |
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/**
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* An optimal index according a quadtree for fast access to spatial data.
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*/
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private SpatialIndex spatialIndex = new Quadtree(); |
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/**
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* A set of boolean items that specifies which graphic items of this layer are selected.
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*
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* @see #getSelection()
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* @see #setSelection(FBitSet)
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*/
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private FBitSet selection = new FBitSet(); |
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/**
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* <p>Creates a new <code>GraphicLayer</code> instance.</p>
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*
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* @see FLyrDefault#FLyrDefault()
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*/
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public GraphicLayer() {
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super();
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} |
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/*
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* @see com.iver.cit.gvsig.fmap.layers.FLayer#getFullExtent()
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*/
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public Rectangle2D getFullExtent() { |
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return fullExtent;
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} |
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/*
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* @see com.iver.cit.gvsig.fmap.layers.FLayer#draw(java.awt.image.BufferedImage, java.awt.Graphics2D, com.iver.cit.gvsig.fmap.ViewPort, com.iver.utiles.swing.threads.Cancellable, double)
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*/
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public void draw(BufferedImage image, Graphics2D g, ViewPort viewPort, Cancellable cancel, double scale) throws ReadException { |
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if (isVisible() && isWithinScale(scale)){
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drawGraphics(image, g, viewPort, cancel); |
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} |
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} |
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/**
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* <p>Processes all graphic items of this layer according to the <i>visitor pattern</i>. This
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* operation can be canceled at any time.</p>
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*
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* @param visitor object that allows visit each graphic item
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* @param cancel shared object that determines if this layer can continue being drawn
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*/
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public void process(ItemVisitor visitor, Cancellable cancel) |
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{ |
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int numReg;
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for (numReg = 0; numReg < graphics.size(); numReg++) { |
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if(cancel != null){ |
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if (cancel.isCanceled()) {
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break;
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} |
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} |
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FGraphic theGraphic = (FGraphic) graphics.get(numReg); |
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visitor.visitItem(theGraphic); |
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} |
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} |
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/*
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* @see com.iver.cit.gvsig.fmap.layers.FLayer#print(java.awt.Graphics2D, com.iver.cit.gvsig.fmap.ViewPort, com.iver.utiles.swing.threads.Cancellable, double, javax.print.attribute.PrintRequestAttributeSet)
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*/
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public void print(Graphics2D g, ViewPort viewPort, Cancellable cancel, double scale, PrintRequestAttributeSet properties) throws ReadException { |
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if (isVisible() && isWithinScale(scale)){
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drawGraphics(null, g, viewPort, cancel);
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} |
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} |
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/**
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* <p>Draws each graphic item of this layer that it's associated symbol is also in this layer, and its
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* geometry intersects with the extent currently covered by the view (of the {@link ViewPort ViewPort}). If
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* the graphic item is selected, will also draw its selection handlers.</p>
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*
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* @param image buffer used sometimes instead <code>g</code> to accelerate the draw. For example, if two points are as closed that can't be distinguished, draws only one.
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* @param g for rendering 2-dimensional shapes, text and images on the Java(tm) platform
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* @param viewPort the information for drawing the layers
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* @param cancel an object thread that implements the {@link Cancellable Cancellable} interface, and will allow to cancel the draw
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*
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* @see #draw(BufferedImage, Graphics2D, ViewPort, Cancellable, double)
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* @see #print(Graphics2D, ViewPort, Cancellable, double, PrintRequestAttributeSet)
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*/
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private void drawGraphics(BufferedImage image, Graphics2D g, |
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ViewPort viewPort, Cancellable cancel) |
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{ |
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int numReg;
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Rectangle2D elExtent = viewPort.getAdjustedExtent();
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if (elExtent == null) return; |
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//int anchoMapa;
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//int altoMapa;
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//double anchoReal;
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//double altoReal;
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//double escala;
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ISymbol theSymbol = null;
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ICoordTrans ct = getCoordTrans(); |
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for (numReg = 0; numReg < graphics.size(); numReg++) { |
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if (cancel.isCanceled()) {
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break;
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} |
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FGraphic theGraphic = (FGraphic) graphics.get(numReg); |
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Geometry geom = theGraphic.getGeom(); |
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// Modificaci?n para Jorge, para que le reproyecte los gr?ficos.
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if (ct != null) { |
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geom = geom.cloneGeometry(); |
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geom.reProject(ct); |
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} |
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if (geom.fastIntersects(elExtent.getMinX(),
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elExtent.getMinY(), elExtent.getWidth(), elExtent.getHeight())) |
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{ |
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theSymbol = (ISymbol) symbols.get(theGraphic.getIdSymbol()); |
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if (theSymbol == null) |
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continue;
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if (selection.get(numReg)) // Si est? seleccinado |
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{ |
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FGraphicUtilities.DrawHandlers(g, viewPort.getAffineTransform(), geom.getHandlers(Geometry.SELECTHANDLER), theSymbol); |
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} |
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else
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{ |
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theGraphic.draw(g, viewPort, theSymbol); |
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} |
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} |
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} |
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} |
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/**
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* <p>Adds a new symbol to the graphic layer, and, if success, returns the last index of the internal
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* list of symbols.</p>
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*
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* @param newSymbol the new symbol
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* @return last index of the internal list of symbols if success, -1 otherwise
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*
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* @see #clearSymbolsGraphics()
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*/
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public int addSymbol(ISymbol newSymbol) |
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{ |
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if (symbols.add(newSymbol))
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return symbols.size()-1; |
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return -1; |
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} |
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/**
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* <p>Adds a new graphic item to the graphic layer, and, if success, sets as new extent the graphic's
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* one if this layer hadn't, otherwise sets as new extent the union of both.</p>
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*
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* @param g the new graphic item
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*
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* @see #insertGraphic(int, FGraphic)
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* @see #inserGraphics(int, Collection)
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*/
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public void addGraphic(FGraphic g) |
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{ |
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if (graphics.add(g))
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{ |
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// spatialIndex.insert(g.getGeom().getBounds2D())
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if (fullExtent == null) { |
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fullExtent = g.getGeom().getBounds2D(); |
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} else {
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fullExtent.add(g.getGeom().getBounds2D()); |
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} |
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// return graphics.size()-1;
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} |
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// return -1;
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} |
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/**
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* <p>Adds a new graphic item to the graphic layer at the position specified of the internal list, and, if success,
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* sets as new extent the graphic's one if this layer hadn't, otherwise sets as new extent the union of both.</p>
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*
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* @param position the index of the element to insert
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* @param g the new graphic item
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*
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* @see #inserGraphics(int, Collection)
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* @see #addGraphic(FGraphic)
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*/
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public void insertGraphic(int position, FGraphic g) { |
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graphics.add(position, g); |
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if (fullExtent == null) { |
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fullExtent = g.getGeom().getBounds2D(); |
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} else {
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fullExtent.add(g.getGeom().getBounds2D()); |
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} |
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} |
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/**
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* Removes all graphic items from this layer. The internal list of graphic items will be empty
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* after this call returns, and layer won't have extent.
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*
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* @see #removeGraphic(FGraphic)
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* @see #removeGraphic(int)
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*/
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public void clearAllGraphics() |
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{ |
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graphics.clear(); |
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fullExtent = null;
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} |
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/**
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* Removes all symbols from this layer. The internal list of symbols will be empty
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* after this call returns.
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*
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* @see #addSymbol(ISymbol)
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*/
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public void clearSymbolsGraphics() |
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{ |
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symbols.clear(); |
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} |
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/**
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* <p>Gets a set of boolean values that specifies which graphic items of this layer are selected.</p>
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*
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* @return a set of boolean values. Each value is equal to <code>true</code> if is selected the graphic item
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* that has the same position in the internal list of graphic items of this layer, and to <code>false</code> if isn't selected
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*
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* @see #setSelection(FBitSet)
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*/
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public FBitSet getSelection() {
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return selection;
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} |
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/**
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* <p>Sets a set of boolean values that specifies which graphic items of this layer are selected.</p>
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*
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* @param selection a set of boolean values. Each value is equal to <code>true</code> if is selected the graphic item
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* that has the same position in the internal list of graphic items of this layer, and to <code>false</code> if isn't selected
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*
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* @see #getSelection()
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*/
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public void setSelection(FBitSet selection) { |
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this.selection = selection;
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} |
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/**
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* Returns a bit set that reports which graphic items <i>(geometries)</i>, intersect with
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* the rectangle <code>r</code>.
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*
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* @param r the <code>Rectangle2D</code> to be intersected with some geometries of this layer
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* @return a <code>FBitSet</code> which <code>true</code> bits represent the geometries of this layer
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* that intersect with the rectangle
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*
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* @see IGeometry#intersects(Rectangle2D)
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*/
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public FBitSet queryByRect(Rectangle2D r) { |
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FBitSet newSel = new FBitSet();
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for (int numReg = 0; numReg < graphics.size(); numReg++) { |
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FGraphic theGraphic = (FGraphic) graphics.get(numReg); |
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Geometry geom = theGraphic.getGeom(); |
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if (geom.intersects(r))
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{ |
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newSel.set(numReg); |
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} |
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} |
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return newSel;
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} |
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/**
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* Removes a graphic item and recalculates the extent of this layer.
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*
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* @param graphic the graphic item to be removed
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*
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* @see #removeGraphic(int)
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* @see #clearAllGraphics()
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*/
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public void removeGraphic(FGraphic graphic) { |
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graphics.remove(graphic); |
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reCalculateFullExtent(); |
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} |
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/**
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* Returns the item at the specified position in the internal list of graphics.
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*
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* @param idGraphic index of item to return
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* @return the item at the specified position in the internal list of graphics
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*
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* @see #getGraphicByObjectTag(Object)
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* @see #getNumGraphics()
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*/
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public FGraphic getGraphic(int idGraphic) { |
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return (FGraphic) graphics.get(idGraphic);
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} |
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/**
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* Returns the graphic item of this layer, that has the specified object tag.
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*
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* @param objectTag the tag of the item to return
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* @return the item that has the specified object tag, or <code>null</code> if there was no item that had it
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*
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* @see #getGraphic(int)
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* @see #getNumGraphics()
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*/
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public FGraphic getGraphicByObjectTag(Object objectTag) { |
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for (int i = 0; i < graphics.size(); i++) { |
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FGraphic theGraphic = (FGraphic) graphics.get(i); |
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if (theGraphic.getObjectTag() == objectTag)
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return theGraphic;
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} |
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return null; |
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} |
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|
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/**
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* Returns the number of graphic items in this layer.
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*
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* @return the number of graphic items in this list
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*
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* @see #addGraphic(FGraphic)
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* @see #inserGraphics(int, Collection)
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* @see #insertGraphic(int, FGraphic)
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* @see #clearAllGraphics()
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* @see #removeGraphic(FGraphic)
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* @see #removeGraphic(int)
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* @see #getGraphic(int)
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*/
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public int getNumGraphics() { |
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return graphics.size();
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} |
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/**
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* Recalculates the full extent of this layer as the union of the bounds 2D
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* of all internal graphic items.
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*/
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private void reCalculateFullExtent(){ |
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if (graphics.size() > 0) { |
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FGraphic g = (FGraphic) graphics.get(0);
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fullExtent = g.getGeom().getBounds2D(); |
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for (int i = 1; i < graphics.size(); i++) { |
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g = (FGraphic) graphics.get(i); |
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Rectangle2D rAux = g.getGeom().getBounds2D();
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fullExtent.add(rAux); |
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} |
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} |
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} |
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|
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/**
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* <p>Inserts all of the elements in the specified {@link Collection Collection} into the internal list of graphic items,
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* starting at the specified position. Shifts the element currently at that position (if there was any) and any
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* subsequent elements to the right (increasing their indices). The new elements will appear in the list
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* in the order that they are returned by the specified collection's iterator.</p>
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*
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* @param index index where starting to insert the elements from the specified collection
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* @param c elements to be inserted into this list
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*
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* @see #insertGraphic(int, FGraphic)
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* @see #addGraphic(FGraphic)
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*/
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public void inserGraphics(int index, Collection c) { |
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graphics.addAll(index, c); |
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|
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} |
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|
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/**
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* <p>Fast remove: removes only a graphic item of this layer.</p>
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* <p>Remember to call {@linkplain #reCalculateFullExtent()} when you finish removing graphics.</p>
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*
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* @param graphicIndex the graphic item to be removed
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*
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* @see #removeGraphic(FGraphic)
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* @see #clearAllGraphics()
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*/
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public void removeGraphic(int graphicIndex) { |
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graphics.remove(graphicIndex); |
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} |
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|
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/**
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* <p>Searches for the first symbol <code>sym</code>, testing for equality using the equals method.</p>
|
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*
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* @param sym a symbol
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* @return the index of the first occurrence of <code>sym</code>; returns -1 if the object is not found.
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*/
|
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public int getSymbol(ISymbol sym) { |
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if (symbols.contains(sym)) {
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return symbols.indexOf(sym);
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} |
495 |
return -1; |
496 |
} |
497 |
} |