使用Java中的文档鼠标单击来修改SVG文件

Question

我需要使用蜡染修改并使用SVG映射文件，但无法对其进行修改。 我正在努力做的是修改一个国家/地区的填充色值（在解析SVG文件后，我可以从path元素中获取该值）。 为此，我需要找出单击哪个国家/地区以获得其他标识符的ID，以修改正确的填充参数。

这是我的代码：

public class SVGEditor{
    public File svgEditFile;
    public SVGDocument svgDoc;
    public JSVGCanvas svgCanvas;
    public SAXSVGDocumentFactory svgDocumentFactory;
    public Document doc;
    public Vector<String> colors = new Vector<String>();

    public SVGEditor(File f, JSVGCanvas canvas){
        svgEditFile = f;
        svgCanvas = canvas;
        svgCanvas.getInteractors().add(this);
    }

    public void editFile() throws IOException{
        String parser = XMLResourceDescriptor.getXMLParserClassName();
        svgDocumentFactory  = new SAXSVGDocumentFactory(parser);
        doc = svgDocumentFactory.createDocument(svgEditFile.toURI().toString());

    }
    public void pathParser(){
        doc.getDocumentElement().normalize();
        NodeList listOfPathNodes = doc.getElementsByTagName("path");
        int totalPaths = listOfPathNodes.getLength();
        System.out.println("Total number of paths: " + totalPaths); 
        for(int i = 0; i < totalPaths; i++){
            Element el = (Element) listOfPathNodes.item(i);
            EventTarget target = (EventTarget) el;
            target.addEventListener("click", 
                new org.w3c.dom.events.EventListener() {
                    public void handleEvent(org.w3c.dom.events.Event evt) {
                        if(evt.getType().equals("click")){
                            //Here is where I want to get the clicked path from the interaction with the DOM document
                            Element el  = (Element)evt.getTarget();
                            System.out.println("Clicked Path:" + el.getElementsByTagname("path");

                         }
                     }


                 }, false);
             // Get id data
             id = el.getAttribute("id");
             // Get path data
             String path = el.getAttribute("d");
             if(id.equals("ro"))
                 System.out.println(path);
             addPoint(path);

             // Get color data
             String style = el.getAttribute("style");
             int index1 = style.indexOf("fill:#");
             String color = style.substring((index1+5),(index1 + 12));
             colors.add((id + ":" +color));

         }
     }
 }

这是SVG文件： http : //upload.wikimedia.org/wikipedia/commons/b/b3/Blank_map_of_Europe.svg ，您可以在editFile()方法中直接使用此链接。

我希望很容易理解，我想做的就是使用此解决方案或您提供的其他解决方案，通过单击事件找到在哪里修改文档中的填充颜色值。

Answer 1

为了获得您单击的国家ID，您应该注册mousedown事件侦听器。 （ click不适用于我的蜡染版本）

如果要了解您单击了哪个国家：

@Override
public void handleEvent(Event e) {
    Element element = (Element) e.getCurrentTarget();

    String countryISO = element.getAttribute("id");
}

Answer 2

我也为这个问题苦苦挣扎了好几个小时。 我终于找到了！ 实际上，我认为您仅缺少以下语句：

svgCanvas.setDocumentState(JSVGCanvas.ALWAYS_DYNAMIC);

我将解决方案上传到了github，可以在这里找到： https : //github.com/fmarot/miscPOC/tree/master/batik-poc1顺便说一句，对于Batik 1.7（我尝试过的方法），“单击”确实有效；）

Answer 3

我对您的代码进行了更改。

    public class SVGEditor {
    public File svgEditFile;
    public SVGDocument svgDoc;
    public JSVGCanvas svgCanvas;
    public SAXSVGDocumentFactory svgDocumentFactory;
    public Document doc;
    public Vector<String> colors = new Vector<String>();

    public SVGEditor(File f, JSVGCanvas canvas){
        svgEditFile = f;
        svgCanvas = canvas;
        svgCanvas.getInteractors().add(this);
    }

    public void editFile() throws IOException{
        String parser = XMLResourceDescriptor.getXMLParserClassName();
        svgDocumentFactory  = new SAXSVGDocumentFactory(parser);
        doc = svgDocumentFactory.createDocument(svgEditFile.toURI().toString());

    }
    public void pathParser(){
        doc.getDocumentElement().normalize();
        NodeList listOfPathNodes = doc.getElementsByTagName("path");
        int totalPaths = listOfPathNodes.getLength();
        System.out.println("Total number of paths: " + totalPaths); 
        for(int i = 0; i < totalPaths; i++){
            Element el = (Element) listOfPathNodes.item(i);
            EventTarget target = (EventTarget) el;
            target.addEventListener("click", 
                new org.w3c.dom.events.EventListener() {
                    public void handleEvent(org.w3c.dom.events.Event evt) {
                        if(evt.getType().equals("click")){
                            //Here is where I want to get the clicked path from the interaction with the DOM document
                            Element el  = (Element)evt.getTarget();
                            System.out.println("Clicked Path:" + el.getElementsByTagName("path"));

                         }
                     }


                 }, false);
             // Get id data
             String id = el.getAttribute("id");
             // Get path data
             String path = el.getAttribute("d");
             if(id.equals("ro"))
                 System.out.println(path);

             // Get color data
             String style = el.getAttribute("style");
             int index1 = style.indexOf("fill:#");
             String color = style.substring((index1+5),(index1 + 12));
             colors.add((id + ":" +color));

         }
     }

    public static void main(String[] args) throws IOException {
        System.out.println("SVG start");

        JSVGCanvas canvas = new JSVGCanvas();
        canvas.setDocumentState(JSVGCanvas.ALWAYS_DYNAMIC);
        SVGEditor svgEditor = new SVGEditor(new File(
                "C:\\Users\\neda.danilovic\\Desktop\\batik 1.7\\miscPOC-master\\batik-poc1\\src\\main\\java\\glasspane\\Blank_map_of_Europe.svg"), canvas);
        svgEditor.editFile();
        svgEditor.pathParser();
        System.out.println("SVG end");
    }
}


package glasspane;

import java.awt.Dimension;
import java.io.File;
import java.io.IOException;
import java.util.Vector;

import javax.swing.JLabel;
import javax.swing.JPanel;

import org.apache.batik.dom.svg.SAXSVGDocumentFactory;
import org.apache.batik.dom.svg.SVGDOMImplementation;
import org.apache.batik.dom.svg.SVGOMSVGElement;
import org.apache.batik.swing.JSVGCanvas;
import org.apache.batik.swing.svg.AbstractJSVGComponent;
import org.apache.batik.util.XMLResourceDescriptor;
import org.w3c.dom.DOMImplementation;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import org.w3c.dom.events.Event;
import org.w3c.dom.events.EventListener;
import org.w3c.dom.events.EventTarget;
import org.w3c.dom.svg.SVGSVGElement;

public class SvgGlassPaneExample {

    private JSVGCanvas  canvas;
    private JLabel      target;
    private SAXSVGDocumentFactory svgDocumentFactory;
    private Document doc;
    private File svgEditFile;
    private Vector<String> colors = new Vector<String>();

    /** Creates a new instance of SvgGlassPaneExample 
     * @throws IOException */
    public SvgGlassPaneExample(JPanel panel) throws IOException {
        panel.removeAll();
        canvas = new JSVGCanvas();
        canvas.setDocumentState(AbstractJSVGComponent.ALWAYS_DYNAMIC);
        File file = new File("C:\\Users\\neda.danilovic\\Desktop\\batik 1.7\\miscPOC-master\\batik-poc1\\src\\main\\java\\glasspane\\Blank_map_of_Europe.svg");
        String parser = XMLResourceDescriptor.getXMLParserClassName();
        svgDocumentFactory  = new SAXSVGDocumentFactory(parser);
        canvas.setDocument(svgDocumentFactory.createDocument(file.toURI().toString()));
        panel.add(canvas);
        panel.repaint();
    }

    public void addGlassPane() {
        String svgNS = SVGDOMImplementation.SVG_NAMESPACE_URI;
        Document doc = canvas.getSVGDocument();
        Element rectangle = doc.createElementNS(svgNS, "rect");
        rectangle.setAttributeNS(null, "x", "0");
        rectangle.setAttributeNS(null, "y", "0");
        rectangle.setAttributeNS(null, "width", "700");
        rectangle.setAttributeNS(null, "height", "700");
        rectangle.setAttributeNS(null, "style", "fill:none;pointer-events:fill");
        rectangle.setAttributeNS(null, "id", "glasspane");
        Element svgRoot = doc.getDocumentElement();

        svgRoot.insertBefore(rectangle, doc.getElementById("rectangles"));

    }

    public void registerListeners(JLabel target) {
        //this label provides feedback on the selected item
        this.target = target;
        // Gets an element from the loaded document.
        // document is your SVGDocument

        NodeList listOfPathNodes = canvas.getSVGDocument().getElementsByTagName("path");
        int totalPaths = listOfPathNodes.getLength();
        System.out.println("Total number of paths: " + totalPaths); 
        for(int i = 0; i < totalPaths; i++){
            Element el = (Element) listOfPathNodes.item(i);
            EventTarget eventTarget = (EventTarget) el;
            eventTarget.addEventListener("click", 
                new EventListener() {
                    public void handleEvent(Event evt) {
                        System.out.println("click happend!!!");
                     }
                 }, false);

             // Get id data
             String id = el.getAttribute("id");
             // Get path data
             String path = el.getAttribute("d");
             if(id.equals("ro"))
                 System.out.println(path);

             // Get color data
             String style = el.getAttribute("style");
             int index1 = style.indexOf("fill:#");
             String color = style.substring((index1+5),(index1 + 12));
             colors.add((id + ":" +color));

         }
    }

    public class GlassPaneClick implements EventListener {

        @Override
        public void handleEvent(Event evt) {
            target.setText("Glasspane event " + ((Element) evt.getTarget()).getAttribute("id"));
            target.repaint();
        }
    }

    public class ObjectClick implements EventListener {

        @Override
        public void handleEvent(Event evt) {
            target.setText("Rectangles event " + ((Element) evt.getTarget()).getAttribute("id"));
            target.repaint();
        }
    }

    public void makeDocument() throws IOException{
        String parser = XMLResourceDescriptor.getXMLParserClassName();
        svgDocumentFactory  = new SAXSVGDocumentFactory(parser);
        doc = svgDocumentFactory.createDocument(svgEditFile.toURI().toString());

    }
}

How to make that click on SVG works?