cadpane.java

用Java开发的、实现类似Visio功能的应用程序源码

		
		
        	//Create/set menu bar and content pane.
        	CADPane pane = new CADPane();
        	pane.setOpaque(true); //content panes must be opaque

        	//Create and set up the window.
        	JFrame myFrame = new JFrame(CADResource.APPLICATION_TITLE);
        	myFrame.setJMenuBar(pane.createMenuBar());
        	//myFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        	myFrame.addWindowListener(new CloseWindowAdapter(pane));
        	myFrame.setContentPane(pane);

        	//Display the window.
        	myFrame.pack();
        	myFrame.setVisible(true);  
        	
        	pane.openFiles(files);
        	
        	//* demo
        	LibHelper helper	=LibHelper.getInstance();
		helper.showLibraryDialog(pane);
		//*/
    	}
    	

  	public void closeAllWindows(){
     		JInternalFrame[] frames = m_desktop.getAllFrames();

      		for (int i = 0; i < frames.length; i++){
         		  try{ 
         		  	frames[i].setClosed(true); 
            		  }catch(Exception e){}
      		}
   	}


    	/** get currently focused internal frame in cad pane.
    	 *  @return currently focused internal frame.
    	 */
    	public  DrawFrame getCurrentFrame(){
                try{
    			//get the desktop of this cad pane.
			JDesktopPane desktop	=getDesktop();
		
			//currently active frame within this desktop.
			JInternalFrame iFrame	=desktop.getSelectedFrame();
		
			if (iFrame!=null && iFrame instanceof DrawFrame)
				return (DrawFrame)iFrame;
			else
				return null;
		}catch(Exception e){
			return null;
		}
    	}

    	/** get current drawing canvas in focused internal frame.
    	 *  @return current drawing canvas.
    	 */
    	public  DrawCanvas getDrawCanvas(){
    		
    		//get current focused internal frame.
		DrawFrame drawFrame	=getCurrentFrame();
				
		if (drawFrame!=null)
			return drawFrame.getDrawPane().getDrawCanvas();
		else
			return null;
    	}
        
        /** clear the '*' charactor that represents a modified page.*/
	private String clearTitleModifier(String title){
		if (title==null || title.equals(""))
			return "";
		
		if (title.endsWith(" *")){
			return	title.substring(0,title.length()-2);
		}else{
			return  title;
		}
	}

    	/** Append all window titles to window menu for furthur toggle operations.
    	 */
    	public  void appendWindowTitles(){
		
		List titleList	=new ArrayList();
     		JInternalFrame[] frames = m_desktop.getAllFrames();

      		for (int i = 0; i < frames.length; i++){
      			JInternalFrame iFrame	=frames[i];
      			String title	=clearTitleModifier(iFrame.getTitle());
      			titleList.add(title);
      		}

   		m_toolFactory.appendTitlesToWindowMenu(titleList,this);

   	}


    	/** Focus window by title
    	 *  @param title A specified window title.
    	 */
    	public  void focusWindowByTitle(String title){
     		JInternalFrame[] frames = m_desktop.getAllFrames();
		
		title	=clearTitleModifier(title);
      		for (int i = 0; i < frames.length; i++){
      			JInternalFrame iFrame	=frames[i];
      			
			String thisTitle	=clearTitleModifier(iFrame.getTitle());
      			if (thisTitle.equals(title)){
				try{
      					iFrame.setSelected(true);
      					iFrame.toFront();
      					return;
      				}catch(Exception e){
      				}
      			}
      		}
    	}


    	/** new file operation.
    	 *  This operation should generate a new drawing page.
    	 */
    	public void newFile(){
		DrawFrame newFrame = newDrawFrame("");
		if (newFrame!=null){
        		newFrame.setVisible(true); 
        		setLayerName(JFLayer.LAYER_NAME_DEFAULT);
			appendWindowTitles();
		}
    	}
	
	/** create a new draw frame */    	
    	private DrawFrame newDrawFrame(String title){
		
		JDesktopPane desktop	=getDesktop();
		if (desktop==null)
			return null;
				    			
        	DrawFrame newFrame = new DrawFrame(this,title);
        	newFrame.setSize(new Dimension(600, 400));
                
        	desktop.add(newFrame);

        	try {
        	   	newFrame.setMaximum(true);
            		newFrame.setSelected(true);
        	} catch (java.beans.PropertyVetoException e) {
        	}    		
        	
        	return newFrame;
	}

    	/** get a frame with a title.
    	 *  @return the frame found.
    	 */
    	private  DrawFrame getFrame(String title){
    		//get the desktop of this cad pane.
		JDesktopPane desktop	=getDesktop();
		JInternalFrame[] frameAry =desktop.getAllFrames();
		if (frameAry==null || frameAry.length==0)
			return null;
		
		for (int i=0; i<frameAry.length; i++){
			DrawFrame frame	=(DrawFrame)frameAry[i];
			if (frame.isTitleNamed() && frame.getCurrentTitle().equals(title))
				return frame;
		}
		return null;
	}
	
	
    	/** open a specified file
    	 * @param fileName A spcified file name
    	 */
    	public boolean openFile(String fileName){ 
    		if (fileName==null || fileName.equals(""))
    			return false;
    			
    		try{    
                	//if this file is already opened in other frame.
                	DrawFrame frame	=getFrame(fileName);
                	if (frame!=null){
                		frame.setSelected(true);
                		return true;
                	}else{
        			frame = newDrawFrame(fileName);
                	}
                	
                	//tell draw pane to open file.
                	frame.getDrawPane().openFile(fileName);
                	    			
    			DrawCanvas drawCanvas	=frame.getDrawPane().getDrawCanvas();
    			if (drawCanvas==null)
    				return false;
    				
			JFPage page	=drawCanvas.getDrawPage();

                        
                        frame.setVisible(true); 
                        JFLayer	layer=page.getCurrentLayer();
                        if (layer!=null){
                        	setLayerName(layer.getName());
        		}
        					
			setFileName(fileName);
			return true;
		
		}catch(Exception e){
			m_logger.error("openFile: "+e);
			return false;
		}
    	}


    	/** Save current page to a specified file.
    	 *  @param  fileName A file to be saved into.
    	 */
    	public boolean saveFile(String fileName){    
    		if (fileName==null || fileName.equals(""))
    			return false;
    			
                try{
    			DrawCanvas drawCanvas	=getDrawCanvas();
    			if (drawCanvas==null)
    				return false;

			JFPage page	=drawCanvas.getDrawPage();
			
			if (fileName.endsWith(JFFileFilter.FILEEXT_DRAW)){
				//binary JFDraw file
				if (!page.saveToBinary(fileName))
					return false;
			}else{
				//xml JFDraw file.
				if (!page.saveToXML(fileName))
					return false;
			}
                        
                        //set global path.
    			GlobalSettings m_settings	=GlobalSettings.getInstance();
                        m_settings.setGlobalPath(fileName);
                        
			setFileName(fileName);

			return true;
               
    		} catch(Exception e) {
    			m_logger.error("saveFile: "+e);
    		} 
  
  		return false;
    	}


    	/** get the file name of current opened page.
    	 *  @return the file name
    	 */
    	public String getFileName(){
    		DrawCanvas drawCanvas	=getDrawCanvas();
    		if (drawCanvas==null)
    			return "";
    		else 
    			return drawCanvas.getFileName();
    	}

    	/** set the file name of current opened page.
    	 *  @param  fileName A new file name
    	 */
    	public void setFileName(String fileName){ 
		DrawFrame frame		=getCurrentFrame();
		if (frame==null)
			return;
		
		frame.setTitle(fileName);
		appendWindowTitles();
    	}


   	    	
	/** test */
	public static void main (final String args[]){
        	//Schedule a job for the event-dispatching thread:
        	//creating and showing this application's GUI.
        	javax.swing.SwingUtilities.invokeLater(new Runnable() {
            		public void run() {
                		createAndShowGUI(args);
            		}
        	});		
        }


    	
 }