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Java example source code file (FigureWidget.java)

This example Java source code file (FigureWidget.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

arraylist, awt, depth, figure, figurewidget, font, gui, jmenu, labelwidget, max_string_length, override, set, string, stringbuilder, swing, util, widget, zoom_factor

The FigureWidget.java Java example source code

/*
 * Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 *
 */
package com.sun.hotspot.igv.view.widgets;

import com.sun.hotspot.igv.graph.Figure;
import com.sun.hotspot.igv.view.DiagramScene;
import com.sun.hotspot.igv.view.SlotLayout;
import com.sun.hotspot.igv.util.DoubleClickHandler;
import com.sun.hotspot.igv.data.Properties;
import com.sun.hotspot.igv.util.PropertiesSheet;
import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Composite;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Point;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Set;
import javax.swing.Action;
import javax.swing.BorderFactory;
import javax.swing.JMenu;
import javax.swing.JPopupMenu;
import org.netbeans.api.visual.action.PopupMenuProvider;
import org.netbeans.api.visual.action.WidgetAction;
import org.netbeans.api.visual.model.ObjectState;
import org.netbeans.api.visual.widget.Widget;
import org.netbeans.api.visual.layout.LayoutFactory;
import org.netbeans.api.visual.widget.LabelWidget;
import org.openide.nodes.AbstractNode;
import org.openide.nodes.Children;
import org.openide.nodes.Node;
import org.openide.nodes.Sheet;

/**
 *
 * @author Thomas Wuerthinger
 */
public class FigureWidget extends Widget implements Properties.Provider, PopupMenuProvider, DoubleClickHandler {

    public static final boolean VERTICAL_LAYOUT = true;
    public static final int DEPTH = 5;
    public static final int MAX_STRING_LENGTH = 20;
    private static final double LABEL_ZOOM_FACTOR = 0.3;
    private static final double ZOOM_FACTOR = 0.1;
    private Font font;
    private Font boldFont;
    private Figure figure;
    private Widget leftWidget;
    private Widget rightWidget;
    private Widget middleWidget;
    private ArrayList<LabelWidget> labelWidgets;
    private DiagramScene diagramScene;
    private boolean boundary;
    private Node node;

    public void setBoundary(boolean b) {
        boundary = b;
    }

    public boolean isBoundary() {
        return boundary;
    }

    public Node getNode() {
        return node;
    }

    private String shortenString(String string) {
        if (string.length() > MAX_STRING_LENGTH) {
            StringBuilder sb = new StringBuilder();
            for (int i = 0; i < string.length(); i++) {
                char c = string.charAt(i);
                if (!Character.isLetter(c) || Character.isUpperCase(c)) {
                    sb.append(c);
                }
            }
            string = sb.toString();
        }
        return string;
    }

    public FigureWidget(final Figure f, DiagramScene s, Widget parent) {

        super(s);


        font = f.getDiagram().getFont();
        boldFont = f.getDiagram().getFont().deriveFont(Font.BOLD);
        this.setCheckClipping(true);
        this.diagramScene = s;

        parent.addChild(this);
        this.figure = f;
        this.resolveBounds(null, calculateClientArea());

        leftWidget = new Widget(s);
        this.addChild(leftWidget);
        leftWidget.setLayout(new SlotLayout(SlotLayout.HorizontalAlignment.Right, VERTICAL_LAYOUT));//LayoutFactory.createVerticalFlowLayout(LayoutFactory.SerialAlignment.JUSTIFY, 0));

        middleWidget = new Widget(s);
        this.addChild(middleWidget);

        if (VERTICAL_LAYOUT) {
            this.setLayout(LayoutFactory.createVerticalFlowLayout());
        } else {
            this.setLayout(LayoutFactory.createHorizontalFlowLayout());
        }

        middleWidget.setLayout(LayoutFactory.createVerticalFlowLayout());

        middleWidget.setBackground(f.getColor());
        middleWidget.setOpaque(true);
        assert this.getScene() != null;
        assert this.getScene().getView() != null;
        middleWidget.setBorder(BorderFactory.createLineBorder(Color.BLACK));


        labelWidgets = new ArrayList<LabelWidget>();

        String[] strings = figure.getLines();

        for (String cur : strings) {

            String displayString = cur;

            LabelWidget lw = new LabelWidget(s);
            labelWidgets.add(lw);
            middleWidget.addChild(lw);
            lw.setLabel(displayString);

            lw.setFont(font);
            lw.setForeground(Color.BLACK);
            lw.setAlignment(LabelWidget.Alignment.CENTER);
            lw.setVerticalAlignment(LabelWidget.VerticalAlignment.CENTER);
            lw.setMaximumSize(new Dimension(f.getWidth(), 20000));
            lw.setMinimumSize(new Dimension(f.getWidth(), 20));
        }

        rightWidget = new Widget(s);
        this.addChild(rightWidget);
        rightWidget.setLayout(new SlotLayout(SlotLayout.HorizontalAlignment.Left, VERTICAL_LAYOUT));//LayoutFactory.createVerticalLayout(LayoutFactory.SerialAlignment.JUSTIFY, 0));

        // Initialize node for property sheet
        node = new AbstractNode(Children.LEAF) {

            @Override
            protected Sheet createSheet() {
                Sheet s = super.createSheet();
                PropertiesSheet.initializeSheet(f.getProperties(), s);
                return s;
            }
        };
        node.setDisplayName(getName());
    }
    private boolean firstTime = true;

    @Override
    protected void paintWidget() {
        if (firstTime) {
            firstTime = false;
            for (LabelWidget w : labelWidgets) {
                String cur = w.getLabel();
                Graphics graphics = this.getGraphics();
                if (graphics.getFontMetrics().stringWidth(cur) > figure.getWidth()) {
                    w.setLabel(shortenString(cur));
                }
            }
        }
        super.paintWidget();
    }

    public Widget getLeftWidget() {
        return leftWidget;
    }

    public Widget getRightWidget() {
        return rightWidget;
    }

    @Override
    protected void notifyStateChanged(ObjectState previousState, ObjectState state) {
        super.notifyStateChanged(previousState, state);

        Color borderColor = Color.BLACK;
        int thickness = 1;
        boolean repaint = false;
        Font f = font;
        if (state.isSelected()) {
            thickness = 1;
            f = boldFont;
        }

        if (state.isHovered()) {
            borderColor = Color.BLUE;
        }

        if (state.isHovered() != previousState.isHovered()) {
            repaint = true;
        }

        if (state.isSelected() != previousState.isSelected()) {
            repaint = true;
        }

        if (repaint) {
            middleWidget.setBorder(BorderFactory.createLineBorder(borderColor, thickness));
            for (LabelWidget labelWidget : labelWidgets) {
                labelWidget.setFont(f);
            }
            repaint();
        }
    }

    public String getName() {
        return getProperties().get("name");
    }

    public Properties getProperties() {
        return figure.getProperties();
    }

    public Figure getFigure() {
        return figure;
    }

    @Override
    protected void paintChildren() {

        if (diagramScene.getRealZoomFactor() < ZOOM_FACTOR && diagramScene.getModel().getShowBlocks()) {
            return;
        }

        Composite oldComposite = null;
        if (boundary) {
            oldComposite = getScene().getGraphics().getComposite();
            float alpha = DiagramScene.ALPHA;
            this.getScene().getGraphics().setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, alpha));
        }

        if (diagramScene.getRealZoomFactor() < LABEL_ZOOM_FACTOR) {

            for (LabelWidget labelWidget : labelWidgets) {
                labelWidget.setVisible(false);
            }
            super.paintChildren();
            for (LabelWidget labelWidget : labelWidgets) {
                labelWidget.setVisible(true);
            }

        } else {
            super.paintChildren();
        }

        if (boundary) {
            getScene().getGraphics().setComposite(oldComposite);
        }
    }

    public JPopupMenu getPopupMenu(Widget widget, Point point) {
        JPopupMenu m = diagramScene.createPopupMenu();

        JMenu predecessors = new JMenu("Predecessors");
        addFigureToSubMenu(predecessors, getFigure(), false, DEPTH);

        JMenu successors = new JMenu("Successors");
        addFigureToSubMenu(successors, getFigure(), true, DEPTH);

        m.addSeparator();
        m.add(predecessors);
        m.add(successors);
        return m;
    }

    public void addFigureToSubMenu(JMenu subMenu, final Figure f, boolean successor, int depth) {
        Set<Figure> set = f.getPredecessorSet();
        if (successor) {
            set = f.getSuccessorSet();
        }

        int count = set.size();
        if (set.contains(f)) {
            count--;
        }

        for (Figure f2 : set) {
            if (f2 == f) {
                continue;
            }

            count--;
            addFigureToMenu(subMenu, f2, successor, depth - 1);
            if (count > 0) {
                subMenu.addSeparator();
            }
        }
    }

    public void addFigureToMenu(JMenu m, final Figure f, boolean successor, int depth) {

        Action a = diagramScene.createGotoAction(f);


        m.add(a);

        if (depth > 0) {
            String name = "Predecessors";
            if (successor) {
                name = "Successors";
            }

            JMenu subMenu = new JMenu(name);
            addFigureToSubMenu(subMenu, f, successor, depth);
            m.add(subMenu);
        }

    }

    public void handleDoubleClick(Widget w, WidgetAction.WidgetMouseEvent e) {

        if (diagramScene.isAllVisible()) {
            Set<Integer> hiddenNodes = new HashSet(diagramScene.getModel().getGraphToView().getGroup().getAllNodes());
            hiddenNodes.removeAll(this.getFigure().getSource().getSourceNodesAsSet());
            this.diagramScene.showNot(hiddenNodes);
        } else if (isBoundary()) {

            Set<Integer> hiddenNodes = new HashSet(diagramScene.getModel().getHiddenNodes());
            hiddenNodes.removeAll(this.getFigure().getSource().getSourceNodesAsSet());
            this.diagramScene.showNot(hiddenNodes);
        } else {
            Set<Integer> hiddenNodes = new HashSet(diagramScene.getModel().getHiddenNodes());
            hiddenNodes.addAll(this.getFigure().getSource().getSourceNodesAsSet());
            this.diagramScene.showNot(hiddenNodes);
        }
    }
}

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