root / branches / v2_0_0_prep / libraries / org.gvsig.symbology / org.gvsig.symbology.lib / org.gvsig.symbology.lib.impl / src / main / java / org / gvsig / symbology / fmap / mapcontext / rendering / symbol / style / SVGStyle.java @ 38405
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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) 2005 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.symbology.fmap.mapcontext.rendering.symbol.style; |
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import java.awt.Graphics2D; |
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import java.awt.Rectangle; |
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import java.awt.RenderingHints; |
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import java.awt.geom.AffineTransform; |
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import java.awt.geom.Rectangle2D; |
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import java.io.IOException; |
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import java.net.URISyntaxException; |
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import java.net.URL; |
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import org.apache.batik.bridge.BridgeContext; |
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import org.apache.batik.bridge.DocumentLoader; |
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import org.apache.batik.bridge.GVTBuilder; |
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import org.apache.batik.bridge.UserAgentAdapter; |
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import org.apache.batik.bridge.ViewBox; |
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import org.apache.batik.dom.svg.SVGOMDocument; |
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import org.apache.batik.gvt.GraphicsNode; |
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import org.apache.batik.gvt.renderer.StaticRenderer; |
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import org.w3c.dom.Document; |
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import org.w3c.dom.Element; |
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import org.gvsig.fmap.mapcontext.rendering.symbols.ISymbol; |
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import org.gvsig.fmap.mapcontext.rendering.symbols.SymbolDrawingException; |
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import org.gvsig.tools.ToolsLocator; |
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import org.gvsig.tools.dynobject.DynStruct; |
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import org.gvsig.tools.persistence.PersistenceManager; |
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import org.gvsig.tools.persistence.PersistentState; |
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import org.gvsig.tools.persistence.exception.PersistenceException; |
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import org.gvsig.tools.util.Callable; |
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/**
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* Style for a SVG files.This is a XML specification and file format for
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* describing two-dimensional vector graphics, both static and animated.
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* SVG can be purely declarative or may include scripting. Images can contain
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* hyperlinks using outbound simple XLinks.It is an open standard created
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* by the World Wide Web Consortium..
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*
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* @author jaume dominguez faus - jaume.dominguez@iver.es
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*
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*/
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public class SVGStyle extends BackgroundFileStyle { |
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public static final String SVG_STYLE_PERSISTENCE_DEFINITION_NAME = |
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"SVGStyle";
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private static final String SOURCE = "source"; |
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private GVTBuilder gvtBuilder = new GVTBuilder(); |
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private UserAgentAdapter userAgent;
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private DocumentLoader loader;
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private StaticRenderer renderer = new StaticRenderer(); |
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private GraphicsNode gvtRoot;
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private BridgeContext ctx;
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private Element elt; |
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protected static RenderingHints defaultRenderingHints; |
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static {
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defaultRenderingHints = new RenderingHints(null); |
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defaultRenderingHints.put(RenderingHints.KEY_ANTIALIASING,
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RenderingHints.VALUE_ANTIALIAS_ON);
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defaultRenderingHints.put(RenderingHints.KEY_INTERPOLATION,
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RenderingHints.VALUE_INTERPOLATION_BILINEAR);
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} |
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/**
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* Constructor method
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*
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*/
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public SVGStyle() {
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userAgent = new UserAgentAdapter();
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loader = new DocumentLoader(userAgent);
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ctx = new BridgeContext(userAgent, loader);
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renderer.setDoubleBuffered(true);
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} |
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public void drawInsideRectangle(Graphics2D g, |
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Rectangle rect,
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boolean keepAspectRatio) throws SymbolDrawingException { |
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if (keepAspectRatio) {
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AffineTransform ataux;
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if (elt.hasAttribute("viewBox")) { |
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try {
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ataux = |
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ViewBox.getViewTransform(null,
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elt, |
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(float) rect.getWidth(),
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(float) rect.getHeight(),
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ctx); |
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} catch (NullPointerException e) { |
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throw new SymbolDrawingException(SymbolDrawingException.UNSUPPORTED_SET_OF_SETTINGS); |
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} |
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} else {
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Rectangle2D bounds = gvtRoot.getBounds();
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ataux = getNoRotationTransform( |
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bounds, |
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new Rectangle2D.Double( |
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rect.x, |
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rect.y, |
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rect.width, |
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rect.height), |
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true);
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} |
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RenderingHints renderingHints = new RenderingHints(null); |
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renderingHints.putAll(defaultRenderingHints); |
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g.setRenderingHints(renderingHints); |
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gvtRoot.setTransform(ataux); |
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gvtRoot.paint(g); |
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} else {
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Rectangle2D bounds = gvtRoot.getBounds();
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AffineTransform ataux = getNoRotationTransform(
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bounds, |
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new Rectangle2D.Double(rect.x, rect.y, rect.width, rect.height), |
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false);
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RenderingHints renderingHints = new RenderingHints(null); |
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renderingHints.putAll(defaultRenderingHints); |
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g.setRenderingHints(renderingHints); |
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gvtRoot.setTransform(ataux); |
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gvtRoot.paint(g); |
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} |
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} |
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public boolean isSuitableFor(ISymbol symbol) { |
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return true; |
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} |
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public void setSource(URL url) throws IOException { |
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source = url; |
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Document svgDoc;
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try {
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svgDoc = loader.loadDocument(url.toURI().toString()); |
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} catch (URISyntaxException e) { |
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IOException ioex = new IOException(); |
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ioex.initCause(e); |
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throw ioex;
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} |
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gvtRoot = gvtBuilder.build(ctx, svgDoc); |
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renderer.setTree(gvtRoot); |
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elt = ((SVGOMDocument) svgDoc).getRootElement(); |
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} |
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public Rectangle getBounds() { |
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try {
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Rectangle2D r = gvtRoot.getBounds();
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return new Rectangle((int) r.getX(), |
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(int) r.getY(),
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(int) r.getWidth(),
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(int) r.getHeight());
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} catch (Exception e) { |
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return new Rectangle(); |
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} |
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} |
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public void drawOutline(Graphics2D g, Rectangle r) throws SymbolDrawingException { |
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drawInsideRectangle(g, r); |
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} |
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public void loadFromState(PersistentState state) throws PersistenceException { |
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try {
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String sourceSymbolInLibrary = state.getString(SOURCE_SYMBOL_IN_LIBRARY);
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if (sourceSymbolInLibrary != null){ |
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setSource(new URL(getSymbolLibraryURL().toString()+sourceSymbolInLibrary)); |
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} else {
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setSource(state.getURL(SOURCE)); |
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} |
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} catch (Exception e) { |
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throw new PersistenceCantSetSourceException(e); |
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} |
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} |
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public void saveToState(PersistentState state) throws PersistenceException { |
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if (isLibrarySymbol()){
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state.set(SOURCE_SYMBOL_IN_LIBRARY, getSourceSymbolInLibrary()); |
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} else {
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state.setNull(SOURCE_SYMBOL_IN_LIBRARY); |
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} |
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state.set(SOURCE, source); |
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} |
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public static class RegisterPersistence implements Callable { |
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public Object call() throws Exception { |
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PersistenceManager manager = ToolsLocator.getPersistenceManager(); |
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if (manager.getDefinition(SVG_STYLE_PERSISTENCE_DEFINITION_NAME) == null) { |
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DynStruct definition = |
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manager.addDefinition(SVGStyle.class, |
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SVG_STYLE_PERSISTENCE_DEFINITION_NAME, |
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SVG_STYLE_PERSISTENCE_DEFINITION_NAME |
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+ " Persistence definition",
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null,
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null);
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// Extend the Style base definition
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definition.extend(manager.getDefinition(BACKGROUND_FILE_STYLE_PERSISTENCE_DEFINITION_NAME)); |
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definition.addDynFieldURL(SOURCE).setMandatory(true);
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definition.addDynFieldString(SOURCE_SYMBOL_IN_LIBRARY).setMandatory(false);
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} |
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return Boolean.TRUE; |
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} |
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} |
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private AffineTransform getNoRotationTransform( |
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Rectangle2D from_rect,
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Rectangle2D to_rect,
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boolean keep_aspect) {
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double scalex = to_rect.getWidth() / from_rect.getWidth();
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double scaley = to_rect.getHeight() / from_rect.getHeight();
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if (keep_aspect) {
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// force min value for both
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scalex = Math.min(scalex, scaley);
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scaley = scalex; |
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} |
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double from_new_center_x = scalex * from_rect.getCenterX();
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double from_new_center_y = scaley * from_rect.getCenterY();
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double offx = to_rect.getCenterX() - from_new_center_x;
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double offy = to_rect.getCenterY() - from_new_center_y;
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AffineTransform resp =
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AffineTransform.getTranslateInstance(offx, offy);
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// this composition is equivalent to:
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// first scale, then move
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resp.concatenate( |
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AffineTransform.getScaleInstance(scalex, scaley));
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return resp;
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} |
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} |