DebugPCanvas.java

package edu.stanford.hci.r3.tools.debug;

import java.awt.Color;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Line2D;
import java.awt.geom.Rectangle2D;
import java.util.List;

import edu.stanford.hci.r3.Application;
import edu.stanford.hci.r3.events.EventHandler;
import edu.stanford.hci.r3.paper.Region;
import edu.stanford.hci.r3.paper.Sheet;
import edu.stanford.hci.r3.util.DebugUtils;
import edu.umd.cs.piccolo.PCanvas;
import edu.umd.cs.piccolo.PNode;
import edu.umd.cs.piccolo.nodes.PPath;
import edu.umd.cs.piccolo.nodes.PText;

public class DebugPCanvas extends PCanvas {

        private Color defaultLineColor;
        private PNode sheetContainer;
        private Color defaultFillColor;

        public DebugPCanvas() {
                sheetContainer = new PNode();
                getLayer().addChild(sheetContainer);
                useDefaultTheme();
        }

        public void useDefaultTheme() {
                setBackground(new Color(50, 50, 50));
                defaultLineColor = new Color(240, 240, 240);
                defaultFillColor = new Color(140, 140, 140);
        }

        public void addVisualComponents(Application paperApp) {
                sheetContainer.setPaint(defaultLineColor);

                sheetContainer.setOffset(30, 40);

                List<Sheet> sheets = paperApp.getSheets();
                DebugUtils.println("Number of Sheets: " + sheets.size());

                Sheet sheet = sheets.get(0);

                double wInches = sheet.getWidth().getValueInInches();
                double hInches = sheet.getHeight().getValueInInches();

                double pixelsPerInch = 72;

                PPath sheetRect = new PPath(new Rectangle2D.Double(0, 0, wInches * pixelsPerInch, hInches
                                * pixelsPerInch));

                sheetRect.setStrokePaint(defaultLineColor);
                // rectangle.setPaint(defaultLineColor);

                List<Region> regions = sheet.getRegions();
                for (Region r : regions) {
                        double xLoc = r.getOriginX().getValueInInches() * pixelsPerInch;
                        double yLoc = r.getOriginY().getValueInInches() * pixelsPerInch;

                        double rWidth = r.getWidth().getValueInInches() * pixelsPerInch;
                        double rHeight = r.getHeight().getValueInInches() * pixelsPerInch;

                        PPath regionRect = new PPath(new Rectangle2D.Double(xLoc, yLoc, rWidth, rHeight));
                        regionRect.setStrokePaint(defaultLineColor);
                        regionRect.setPaint(defaultFillColor);

                        sheetRect.addChild(regionRect);

                        List<EventHandler> eventHandlers = r.getEventHandlers();

                        for (EventHandler eh : eventHandlers) {
                                DebugUtils.println(eh.getClass().getName());

                                int xOffset = 750;

                                PPath connector = new PPath(new Line2D.Double(xLoc + rWidth, yLoc + 20, xOffset,
                                                yLoc + 20));
                                connector.setStrokePaint(defaultLineColor);

                                PPath handlerCircle = new PPath(new Ellipse2D.Double(0, 0, 20, 20));
                                handlerCircle.setStrokePaint(defaultLineColor);
                                handlerCircle.setOffset(xOffset, yLoc + 10);

                                PText label = new PText(eh.getClass().getName());
                                label.setTextPaint(defaultLineColor);
                                label.setOffset(25, 2);

                                // or should we add to the regionRect?
                                handlerCircle.addChild(label);
                                sheetRect.addChild(connector);
                                sheetRect.addChild(handlerCircle);
                        }

                }

                sheetContainer.addChild(sheetRect);
                repaint();
        }
}

---