VisClient/org/hfbk/vis/visnode/VisKeyword.java

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/*
 * Created on 15.04.2008
 *
 * */
package org.hfbk.vis.visnode;

import java.awt.event.MouseEvent;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import org.dronus.gl.GLTextPanel;
import org.dronus.gl.GLUtil;
import org.dronus.graph.Node;
import org.hfbk.vis.Prefs;
import org.hfbk.vis.VisNodeLayouter;
import org.hfbk.vis.visnode.VisMenu.VisMenuListener;
import org.lwjgl.opengl.GL11;
import org.lwjgl.util.vector.Vector3f;

public class VisKeyword extends VisNodeDraggable implements VisMenuListener {

        //static GLText gltext = GLText.getDefault();

        private GLTextPanel textPanel;

        public String keyword;

        VisMenu menu = null;
        
        List<String> menuitems=new ArrayList<String>(  //needed to add                  
                        Arrays.asList("commonImages", "mixImages", "wikipedia", "googleNews", "google" ));

        int dl;
        
        public VisKeyword(Node n, Vector3f pos) {
                super(n, pos);
                String text=n.text;
                this.keyword = text;
                if (text.matches("http://.*"))
                        url = text;
                
                int l=text.length();
                if (l>20)
                        text=text.replace("http://","").substring(0,10)+"..."+text.substring(l-10,l);
                
                textPanel = new GLTextPanel(text, 0, 0);
                w = textPanel.w;
                h = 1.8f;
                radius=w/2; 
                                
        }
        
        void transform() {
                super.transform();
                if (children.size() < (menu==null ? 1 : 2) )
                        GLUtil.billboardCylinder();
        }

        public void renderSelf() {
                if (children.size() > 0) {
                        // we have some other things underneath, so layout them
                        if (menu != null)       remove(menu); //don't layout the menu
                        VisNodeLayouter.layOut(this, 50, 0, 50);
                        if (menu != null)       add(menu);
                }
                
                if (dl==0){
                        dl=GL11.glGenLists(1);
                        GL11.glNewList(dl,GL11.GL_COMPILE);

                        // render panel
                        GL11.glColor3f(.2f, .2f, .2f);
                        GL11.glDisable(GL11.GL_TEXTURE_2D);
                        GL11.glPolygonOffset(1, 1);
                        GLUtil.renderQuad(-w / 2, -h / 2, w / 2, h / 2);
                        GL11.glPolygonOffset(0, 0);

                        // render text
                        GL11.glTranslatef(-w / 2, -h / 2, 0);
                        GL11.glScalef(1, 2, 1);
                        GL11.glColor3f(1, 1, 1);
                        textPanel.render();     
                        GL11.glEndList();
                }
                
                GL11.glCallList(dl);
        }

        void handleEvent(VisMouseEvent evt) {
                super.handleEvent(evt);
                if (evt.getID() != MouseEvent.MOUSE_CLICKED)
                        return;

                if (url == keyword)
                        getRoot().fetch("spider", url, this);
                else if (!children.contains(menu)) {

                        if (url != null && !url.contains(Prefs.current.baseURL))  
                                menuitems.add("spider"); 
                        
                        add(menu = new VisMenu(menuitems, this));
                        
                        getRoot().client.setViewpoint(traverse(getRoot(), new Vector3f(0,0,0)),1);
                        
                }
        }

        public void menuAction(String item) {
                getRoot().fetch(item, (item.equals("spider") ? url : keyword), this);
                menu=null;
        }
}

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