svgspacing.java

完全基于java开发的svg矢量绘图工具

/*
 * Created on 29 avr. 2004
 * 
 =============================================
                   GNU LESSER GENERAL PUBLIC LICENSE Version 2.1
 =============================================
GLIPS Graffiti Editor, a SVG Editor
Copyright (C) 2003 Jordi SUC, Philippe Gil, SARL ITRIS

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library 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
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

Contact : [e-mail]; [e-mail]

 =============================================
 */
package fr.itris.glips.svgeditor.domactions;

import fr.itris.glips.svgeditor.*;
import fr.itris.glips.svgeditor.canvas.*;
import fr.itris.glips.svgeditor.menutool.*;
import fr.itris.glips.svgeditor.selection.*;
import fr.itris.glips.svgeditor.undoredo.*;
import javax.swing.*;
import java.awt.event.*;
import java.awt.geom.*;
import java.util.*;
import org.w3c.dom.*;
import fr.itris.glips.svgeditor.resources.*;

/**
 * @author Jordi SUC
 *
 * the class used to center nodes horizontally or vertically
 */
public class SVGSpacing extends SVGModuleAdapter{
	
	/**
	 * the id of the module
	 */
	final private String idspacing="Spacing", idspacinghorizontal="HorizontalSpacing", idspacingvertical="VerticalSpacing";
	
	/**
	 * the labels
	 */
	private String labelspacing="", labelspacinghorizontal="", labelspacingvertical="";
	
	/**
	 * the undo/redo labels
	 */
	private String undoredospacinghorizontal="", undoredospacingvertical="";
	
	/**
	 * the constant defining the horizontal center
	 */
	final private int HORIZONTAL_SPACING=0;
	
	/**
	 * the constant defining the vertical center
	 */
	final private int VERTICAL_SPACING=1;

	/**
	 * the menu items that will be contained in the menu
	 */
	private JMenuItem spacingh, spacingv;
	
	/**
	 * the listeners to the menu items
	 */
	private ActionListener horizontalSpacingListener, verticalSpacingListener;
	
	/**
	 * the menu in which the menu items will be inserted
	 */
	private JMenu spacing;
	
	/**
	 * the editor
	 */
	private SVGEditor editor=null;
	
	/**
	 * the nodes that are currently selected
	 */
	private LinkedList selectednodes=new LinkedList();
	
	/**
	 * the constructor of the class
	 * @param editor the editor
	 */
	public SVGSpacing(SVGEditor editor) {
		
		this.editor=editor;
		
		//gets the labels from the resources
		ResourceBundle bundle=SVGEditor.getBundle();
		
		if(bundle!=null){
		    
			try{
				labelspacing=bundle.getString("labelspacing");
				labelspacinghorizontal=bundle.getString("labelspacinghorizontal");
				labelspacingvertical=bundle.getString("labelspacingvertical");
				undoredospacinghorizontal=bundle.getString("undoredospacinghorizontal");
				undoredospacingvertical=bundle.getString("undoredospacingvertical");
			}catch (Exception ex){}
		}
		
		//getting the icons
		ImageIcon horizontalSpacingIcon=SVGResource.getIcon("HorizontalSpacing", false),
						dhorizontalSpacingIcon=SVGResource.getIcon("HorizontalSpacing", true),
						verticalSpacingIcon=SVGResource.getIcon("VerticalSpacing", false),
						dverticalSpacingIcon=SVGResource.getIcon("VerticalSpacing", true);
		
		//creates the menu items, sets the keyboard shortcuts
		spacingh=new JMenuItem(labelspacinghorizontal, horizontalSpacingIcon);
		spacingh.setDisabledIcon(dhorizontalSpacingIcon);
		spacingh.setAccelerator(KeyStroke.getKeyStroke(""));
		spacingh.setEnabled(false);
		
		spacingv=new JMenuItem(labelspacingvertical, verticalSpacingIcon);
		spacingv.setDisabledIcon(dverticalSpacingIcon);
		spacingv.setAccelerator(KeyStroke.getKeyStroke(""));
		spacingv.setEnabled(false);
		
		//a listener that listens to the changes of the SVGFrames
		final ActionListener svgframeListener=new ActionListener(){
			
			/**
			 * a listener on the selection changes
			 */
			private ActionListener selectionListener=null;
			
			/**
			 * the current selection module
			 */
			private SVGSelection selection=null;

			public void actionPerformed(ActionEvent e) {
				
				//clears the list of the selected items
				selectednodes.clear();
				
				//disables the menuitems
				spacingh.setEnabled(false);
				spacingv.setEnabled(false);
				
				final SVGFrame frame=getSVGEditor().getFrameManager().getCurrentFrame();
				
				//if a selection listener is already registered on a selection module, it is removed	
				if(selection!=null && selectionListener!=null){
				    
					selection.removeSelectionListener(selectionListener);
				}

				//gets the current selection module	
				if(frame!=null){
				    
					selection=getSVGEditor().getSVGSelection();
				}
				
				if(frame!=null && selection!=null){
				    
					manageSelection();
					
					//the listener of the selection changes
					selectionListener=new ActionListener(){

						public void actionPerformed(ActionEvent e) {
						    
							manageSelection();
						}
					};
					
					//adds the selection listener
					if(selectionListener!=null){
					    
						selection.addSelectionListener(selectionListener);
					}
				}
			}	
			
			/**
			 * updates the selected items and the state of the menu items
			 */
			protected void manageSelection(){
			    
				//disables the menuitems							
				spacingh.setEnabled(false);
				spacingv.setEnabled(false);
				
				LinkedList list=null;
				
				//gets the currently selected nodes list 
				if(selection!=null){
				    
					list=selection.getCurrentSelection(getSVGEditor().getFrameManager().getCurrentFrame());
				}
				selectednodes.clear();
				
				//refresh the selected nodes list
				if(list!=null){
				    
				    selectednodes.addAll(list);
				}
				
				if(selectednodes.size()>1){
				    
					spacingh.setEnabled(true);
					spacingv.setEnabled(true);		
				}								
			}
		};
		
		//adds the SVGFrame change listener
		editor.getFrameManager().addSVGFrameChangedListener(svgframeListener);
		
		//adds the listeners
		horizontalSpacingListener=new ActionListener(){
		    
			public void actionPerformed(ActionEvent e) {
			    
			    if(getSVGEditor().getSVGSelection()!=null && ! getSVGEditor().getSVGSelection().isActing()){
			        
					getSVGEditor().cancelActions(true);
					
					if(selectednodes.size()>1){
						
						spacing(selectednodes,HORIZONTAL_SPACING);

						//sets that the svg has been modified
						getSVGEditor().getFrameManager().getCurrentFrame().setModified(true);
					}
			    }
			}
		};
		
		spacingh.addActionListener(horizontalSpacingListener);

		verticalSpacingListener=new ActionListener(){
		    
			public void actionPerformed(ActionEvent e) {
			    
			    if(getSVGEditor().getSVGSelection()!=null && ! getSVGEditor().getSVGSelection().isActing()){
			        
					getSVGEditor().cancelActions(true);
					
					if(selectednodes.size()>1){

						spacing(selectednodes,VERTICAL_SPACING);

						//sets that the svg has been modified
						getSVGEditor().getFrameManager().getCurrentFrame().setModified(true);
					}
			    }
			}
		};
		
		spacingv.addActionListener(verticalSpacingListener);
		
		//adds the menu items to the menu
		spacing=new JMenu(labelspacing);
		spacing.add(spacingh);
		spacing.add(spacingv);
	}
	
	/**
	 * @return the editor
	 */
	public SVGEditor getSVGEditor(){
		return editor;
	}
	
	/**
	 * @return a map associating a menu item id to its menu item object
	 */
	public Hashtable getMenuItems(){
		
		Hashtable menuItems=new Hashtable();
		menuItems.put(idspacing, spacing);
		
		return menuItems;
	}
	
	/**
	 * @return a map associating a tool item id to its tool item object
	 */
	public Hashtable getToolItems(){
		
		return null;
	}
	
	/**
	 * Returns the collection of the popup items
	 * @return the collection of the popup items
	 */
	public Collection getPopupItems(){
		
		LinkedList popupItems=new LinkedList();
		
		SVGPopupSubMenu subMenu=new SVGPopupSubMenu(getSVGEditor(), idspacing, labelspacing, "");
		
		popupItems.add(subMenu);
		
		//creating the horizontal spacing popup item
		SVGPopupItem horizontalSpacingItem=new SVGPopupItem(getSVGEditor(), idspacinghorizontal, labelspacinghorizontal, "HorizontalSpacing"){
		
			public JMenuItem getPopupItem(LinkedList nodes) {

				if(nodes!=null && nodes.size()>1){
					
					menuItem.setEnabled(true);
					
					//adds the action listeners
					if(menuItem.isEnabled()){
						
						menuItem.addActionListener(horizontalSpacingListener);
					}
					
				}else{
					
					menuItem.setEnabled(false);
				}
				
				return super.getPopupItem(nodes);
			}
		};
		
		//creating the vertical spacing popup item
		SVGPopupItem verticalSpacingItem=new SVGPopupItem(getSVGEditor(), idspacingvertical, labelspacingvertical, "VerticalSpacing"){
		
			public JMenuItem getPopupItem(LinkedList nodes) {