editoractions.java

经典的java图像处理程序源码

/*
 * $Id: EditorActions.java,v 1.15 2009/04/11 10:01:25 gaudenz Exp $
 * Copyright (c) 2001-2005, Gaudenz Alder
 * 
 * All rights reserved.
 * 
 * See LICENSE file for license details. If you are unable to locate
 * this file please contact info (at) jgraph (dot) com.
 */
package com.mxgraph.swing.examples.editor;

import java.awt.Color;
import java.awt.Component;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;
import java.awt.print.PageFormat;
import java.awt.print.Paper;
import java.awt.print.PrinterException;
import java.awt.print.PrinterJob;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.io.File;
import java.io.IOException;
import java.lang.reflect.Method;
import java.util.HashSet;

import javax.imageio.ImageIO;
import javax.swing.AbstractAction;
import javax.swing.ImageIcon;
import javax.swing.JCheckBoxMenuItem;
import javax.swing.JColorChooser;
import javax.swing.JEditorPane;
import javax.swing.JFileChooser;
import javax.swing.JOptionPane;
import javax.swing.JSplitPane;
import javax.swing.SwingUtilities;
import javax.swing.filechooser.FileFilter;
import javax.swing.text.html.HTML;
import javax.swing.text.html.HTMLDocument;
import javax.swing.text.html.HTMLEditorKit;

import org.w3c.dom.Document;

import com.mxgraph.algebra.mxDistanceCostFunction;
import com.mxgraph.algebra.mxGraphAlgebra;
import com.mxgraph.io.mxCodec;
import com.mxgraph.model.mxCell;
import com.mxgraph.model.mxIGraphModel;
import com.mxgraph.swing.mxGraphComponent;
import com.mxgraph.swing.mxGraphOutline;
import com.mxgraph.swing.handler.mxConnectionHandler;
import com.mxgraph.swing.util.mxGraphActions;
import com.mxgraph.swing.view.mxCellEditor;
import com.mxgraph.util.mxCellRenderer;
import com.mxgraph.util.mxConstants;
import com.mxgraph.util.mxResources;
import com.mxgraph.util.mxUtils;
import com.mxgraph.view.mxGraph;

/**
 * @author Administrator
 * 
 */
public class EditorActions
{

	/**
	 * 
	 * @param e
	 * @return Returns the graph for the given action event.
	 */
	public static final BasicGraphEditor getEditor(ActionEvent e)
	{
		if (e.getSource() instanceof Component)
		{
			Component component = (Component) e.getSource();

			while (component != null
					&& !(component instanceof BasicGraphEditor))
			{
				component = component.getParent();
			}

			return (BasicGraphEditor) component;
		}

		return null;
	}

	/**
	 *
	 */
	public static class ToggleRulersItem extends JCheckBoxMenuItem
	{
		/**
		 * 
		 */
		public ToggleRulersItem(final BasicGraphEditor editor, String name)
		{
			super(name);
			setSelected(editor.getGraphComponent().getColumnHeader() != null);

			addActionListener(new ActionListener()
			{
				/**
				 * 
				 */
				public void actionPerformed(ActionEvent e)
				{
					mxGraphComponent graphComponent = editor
							.getGraphComponent();

					if (graphComponent.getColumnHeader() != null)
					{
						graphComponent.setColumnHeader(null);
						graphComponent.setRowHeader(null);
					}
					else
					{
						graphComponent.setColumnHeaderView(new EditorRuler(
								graphComponent,
								EditorRuler.ORIENTATION_HORIZONTAL));
						graphComponent.setRowHeaderView(new EditorRuler(
								graphComponent,
								EditorRuler.ORIENTATION_VERTICAL));
					}
				}
			});
		}

	}

	/**
	 *
	 */
	public static class ToggleGridItem extends JCheckBoxMenuItem
	{
		/**
		 * 
		 */
		public ToggleGridItem(final BasicGraphEditor editor, String name)
		{
			super(name);
			setSelected(true);

			addActionListener(new ActionListener()
			{
				/**
				 * 
				 */
				public void actionPerformed(ActionEvent e)
				{
					mxGraphComponent graphComponent = editor
							.getGraphComponent();
					mxGraph graph = graphComponent.getGraph();
					boolean enabled = !graph.isGridEnabled();

					graph.setGridEnabled(enabled);
					graphComponent.setGridVisible(enabled);
					graphComponent.repaint();
					setSelected(enabled);
				}
			});
		}
	}

	/**
	 *
	 */
	public static class ToggleOutlineItem extends JCheckBoxMenuItem
	{
		/**
		 * 
		 */
		public ToggleOutlineItem(final BasicGraphEditor editor, String name)
		{
			super(name);
			setSelected(true);

			addActionListener(new ActionListener()
			{
				/**
				 * 
				 */
				public void actionPerformed(ActionEvent e)
				{
					final mxGraphOutline outline = editor.getGraphOutline();
					outline.setVisible(!outline.isVisible());
					outline.revalidate();

					SwingUtilities.invokeLater(new Runnable()
					{
						/*
						 * (non-Javadoc)
						 * @see java.lang.Runnable#run()
						 */
						public void run()
						{
							if (outline.getParent() instanceof JSplitPane)
							{
								if (outline.isVisible())
								{
									((JSplitPane) outline.getParent())
											.setDividerLocation(editor
													.getHeight() - 300);
									((JSplitPane) outline.getParent())
											.setDividerSize(6);
								}
								else
								{
									((JSplitPane) outline.getParent())
											.setDividerSize(0);
								}
							}
						}
					});
				}
			});
		}
	}

	/**
	 *
	 */
	public static class ExitAction extends AbstractAction
	{

		/**
		 * 
		 */
		public void actionPerformed(ActionEvent e)
		{
			BasicGraphEditor editor = getEditor(e);

			if (editor != null)
			{
				editor.exit();
			}
		}

	}

	/**
	 *
	 */
	public static class StylesheetAction extends AbstractAction
	{

		/**
		 * 
		 */
		protected String stylesheet;

		/**
		 * 
		 */
		public StylesheetAction(String stylesheet)
		{
			this.stylesheet = stylesheet;
		}

		/**
		 * 
		 */
		public void actionPerformed(ActionEvent e)
		{
			if (e.getSource() instanceof mxGraphComponent)
			{
				mxGraphComponent graphComponent = (mxGraphComponent) e
						.getSource();
				mxGraph graph = graphComponent.getGraph();
				mxCodec codec = new mxCodec();
				Document doc = mxUtils.loadDocument(EditorActions.class
						.getResource(stylesheet).toString());

				if (doc != null)
				{
					codec.decode(doc.getDocumentElement(), graph
							.getStylesheet());
					graph.refresh();
				}
			}
		}

	}

	/**
	 *
	 */
	public static class ZoomPolicyAction extends AbstractAction
	{
		/**
		 * 
		 */
		protected int zoomPolicy;

		/**
		 * 
		 */
		public ZoomPolicyAction(int zoomPolicy)
		{
			this.zoomPolicy = zoomPolicy;
		}

		/**
		 * 
		 */
		public void actionPerformed(ActionEvent e)
		{
			if (e.getSource() instanceof mxGraphComponent)
			{
				mxGraphComponent graphComponent = (mxGraphComponent) e
						.getSource();
				graphComponent.setPageVisible(true);
				graphComponent.setZoomPolicy(zoomPolicy);
			}
		}

	}

	/**
	 *
	 */
	public static class GridStyleAction extends AbstractAction
	{
		/**
		 * 
		 */
		protected int style;

		/**
		 * 
		 */
		public GridStyleAction(int style)
		{
			this.style = style;
		}

		/**
		 * 
		 */
		public void actionPerformed(ActionEvent e)
		{
			if (e.getSource() instanceof mxGraphComponent)
			{
				mxGraphComponent graphComponent = (mxGraphComponent) e
						.getSource();
				graphComponent.setGridStyle(style);
				graphComponent.repaint();
			}
		}

	}

	/**
	 *
	 */
	public static class GridColorAction extends AbstractAction
	{

		/**
		 * 
		 */
		public void actionPerformed(ActionEvent e)
		{
			if (e.getSource() instanceof mxGraphComponent)
			{
				mxGraphComponent graphComponent = (mxGraphComponent) e
						.getSource();
				mxGraph graph = graphComponent.getGraph();
				Color newColor = JColorChooser.showDialog(graphComponent,
						mxResources.get("gridColor"), graphComponent
								.getGridColor());

				if (newColor != null)
				{
					graphComponent.setGridColor(newColor);
					graphComponent.repaint();
				}
			}
		}

	}

	/**
	 *
	 */
	public static class ScaleAction extends AbstractAction
	{

		/**
		 * 
		 */
		protected double scale;

		/**
		 * 
		 */
		public ScaleAction(double scale)
		{
			this.scale = scale;
		}

		/**
		 * 
		 */
		public void actionPerformed(ActionEvent e)
		{
			if (e.getSource() instanceof mxGraphComponent)
			{
				mxGraphComponent graphComponent = (mxGraphComponent) e
						.getSource();
				mxGraph graph = graphComponent.getGraph();
				double scale = this.scale;

				if (scale == 0)
				{
					String value = (String) JOptionPane.showInputDialog(
							graphComponent, mxResources.get("value"),
							mxResources.get("scale") + " (%)",
							JOptionPane.PLAIN_MESSAGE, null, null, "");

					if (value != null)
					{
						scale = Double.parseDouble(value.replace("%", "")) / 100;
					}
				}

				if (scale > 0)
				{
					graphComponent.zoomTo(scale, graphComponent.isCenterZoom());
				}
			}
		}

	}

	/**
	 *
	 */
	public static class PageSetupAction extends AbstractAction
	{

		/**
		 * 
		 */
		public void actionPerformed(ActionEvent e)
		{
			if (e.getSource() instanceof mxGraphComponent)
			{
				mxGraphComponent graphComponent = (mxGraphComponent) e
						.getSource();
				PrinterJob pj = PrinterJob.getPrinterJob();
				PageFormat format = pj.pageDialog(graphComponent
						.getPageFormat());

				if (format != null)
				{
					graphComponent.setPageFormat(format);
					graphComponent.zoomAndCenter();
				}
			}
		}

	}

	/**
	 *
	 */
	public static class PrintAction extends AbstractAction
	{

		/**
		 * 
		 */
		public void actionPerformed(ActionEvent e)
		{
			if (e.getSource() instanceof mxGraphComponent)
			{
				mxGraphComponent graphComponent = (mxGraphComponent) e
						.getSource();
				PrinterJob pj = PrinterJob.getPrinterJob();

				if (pj.printDialog())
				{
					PageFormat pf = graphComponent.getPageFormat();
					Paper paper = new Paper();
					double margin = 36;
					paper.setImageableArea(margin, margin, paper.getWidth()
							- margin * 2, paper.getHeight() - margin * 2);
					pf.setPaper(paper);
					pj.setPrintable(graphComponent, pf);

					try
					{
						pj.print();
					}
					catch (PrinterException e2)
					{
						System.out.println(e2);
					}
				}
			}
		}

	}

	/**
	 *
	 */
	public static class SaveAction extends AbstractAction
	{

		/**
		 * 
		 */
		protected boolean showDialog;

		/**
		 * 
		 */
		protected String lastDir = null;

		/**
		 * 
		 */
		public SaveAction(boolean showDialog)
		{
			this.showDialog = showDialog;
		}

		/**
		 * 
		 */
		public void actionPerformed(ActionEvent e)
		{
			BasicGraphEditor editor = getEditor(e);

			if (editor != null)
			{
				mxGraphComponent graphComponent = editor.getGraphComponent();
				mxGraph graph = graphComponent.getGraph();
				FileFilter selectedFilter = null;
				FileFilter vmlFileFilter = new DefaultFileFilter(".html",
						"VML " + mxResources.get("file") + " (.html)");
				String filename = null;

				if (showDialog || editor.getCurrentFile() == null)
				{
					String wd;

					if (lastDir != null)
					{
						wd = lastDir;
					}
					else if (editor.getCurrentFile() != null)
					{
						wd = editor.getCurrentFile().getParent();
					}
					else
					{
						wd = System.getProperty("user.dir");
					}

					JFileChooser fc = new JFileChooser(wd);

					// Adds the default file format
					FileFilter defaultFilter = new DefaultFileFilter(".mxe",
							"mxGraph Editor " + mxResources.get("file")
									+ " (.mxe)");
					fc.addChoosableFileFilter(defaultFilter);

					// Adds special vector graphics formats and HTML
					fc.addChoosableFileFilter(new DefaultFileFilter(".svg",
							"SVG " + mxResources.get("file") + " (.svg)"));
					fc.addChoosableFileFilter(vmlFileFilter);
					fc.addChoosableFileFilter(new DefaultFileFilter(".html",
							"HTML " + mxResources.get("file") + " (.html)"));

					// Adds a filter for each supported image format
					Object[] imageFormats = ImageIO.getReaderFormatNames();

					// Finds all distinct extensions
					HashSet formats = new HashSet();

					for (int i = 0; i < imageFormats.length; i++)
					{
						String ext = imageFormats[i].toString().toLowerCase();
						formats.add(ext);
					}

					imageFormats = formats.toArray();

					for (int i = 0; i < imageFormats.length; i++)
					{
						String ext = imageFormats[i].toString();
						fc.addChoosableFileFilter(new DefaultFileFilter("."
								+ ext, ext.toUpperCase() + " "
								+ mxResources.get("file") + " (." + ext + ")"));
					}

					// Adds filter that accepts all supported image formats
					fc
							.addChoosableFileFilter(new DefaultFileFilter.ImageFileFilter(
									mxResources.get("allImages")));
					fc.setFileFilter(defaultFilter);
					int rc = fc.showDialog(null, mxResources.get("save"));

					if (rc != JFileChooser.APPROVE_OPTION)
					{
						return;
					}
					else
					{
						lastDir = fc.getSelectedFile().getParent();
					}

					filename = fc.getSelectedFile().getAbsolutePath();
					selectedFilter = fc.getFileFilter();

					if (selectedFilter instanceof DefaultFileFilter)
					{
						String ext = ((DefaultFileFilter) selectedFilter)
								.getExtension();

						if (!filename.toLowerCase().endsWith(ext))
						{
							filename += ext;
						}
					}

					if (new File(filename).exists()
							&& JOptionPane.showConfirmDialog(graphComponent,
									mxResources.get("overwriteExistingFile")) != JOptionPane.YES_OPTION)