digraph.java

这是一个从音频信号里提取特征参量的程序

// file: DiGraph.java
//

// import java libraries
//
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.event.*;
import java.util.*;
import java.io.*;
import java.lang.*;
import java.net.*;

public class DiGraph extends JFrame implements ActionListener, MouseListener,
					       MouseMotionListener, Constants {

    // ---------------------------------------------------
    //
    // declare class member data
    //
    // ---------------------------------------------------

    // keep track the curren vertex in focus
    //
    public Vertex systemVertex = null;
    public Vertex inVertex = null;
    public Vertex outVertex = null;
    public Vertex initVertexFocus = null;
    public Vertex cfgVertexFocus = null;
    public Vertex currVertexFocus = null;

    // differentiate between parent and child 
    //
    public Vertex vertexParent = null;
    public Vertex vertexChild = null;

    // various types of been in the work area
    //
    public Vector vertices = null;
    public Vector coeffLabels = null;
    public Vector dataLabels = null;

    // flag that enables insertion and removal of arcs
    //
    public boolean enableArcInsertion = false;
    public boolean enableArcDeletion = false;

    // flag that enables insertion and removal of Component
    //
    public boolean enableCompDeletion = false;

    // flag that determines if input block exists
    //
    public boolean inputBlockExist = false; 

    // flag that determines if output block exists
    //
    public boolean outputBlockExist = false; 

    // target of the front end for output data type
    //
    public String targetStr = null;

    // input data type
    //
    public String inputDataStr = SAMPLED_DATA_STR;

    // current save status flag
    //
    public boolean saveWork = false;

    // vector of selected vertices
    //
    public Vector selectedVertices = null;

    // clipboard to handle things like cut, copy and paste
    //
    public Vector clipboard = null;

    // hash tables for quick reference
    //
    public Hashtable tagToVertex = null;

    // holds the maximum width and height of the scroller
    //
    public int maxWidth = WORKAREA_WIDTH;
    public int maxHeight = WORKAREA_HEIGHT;

    // holds the current location of the mouse
    //
    public int mouseXloc = 0;
    public int mouseYloc = 0;
    public int line_index = 0;

    // border for the viewport of the scrollpane
    //
    public Border border = null;

    // the label of the vertex that has been selected form the tool bar
    //
    public String currVertexLabel= null;

    // record the maximum number of inputs generated
    //
    public int maxInputVertices = 0;

    // algorithm association for the processes
    //
    public Association currAssociation = null;

    // maximum width and height of the work area
    //
    public int loadWidthMax = Integer.MIN_VALUE;
    public int loadHeightMax = Integer.MIN_VALUE;

    // input/output block type and impl
    //
    public int iotype = -1;
    public int ioimpl = -1;

    // varaible name in input block 
    //
    public String inputVariable = null;

    // varaible name in output block 
    //
    public String outputVariable = null;

    // creates a fram to manipulate the configuration options
    //
    public JFrame config = null;

    // textfields and labels for the connector properties
    //
    public JLabel toLabel = null;
    public JLabel fromLabel = null;
    public JLabel nameLabel = null;

    public JTextField toField = null;
    public JTextField fromField = null;
    public JTextField nameField = null;

    // main menu for functionality
    //
    public MainMenu mainMenu = null;

    // work area to drag and drop components
    //
    public WorkArea workArea = null;

    // paramenet file to be written to
    //
    public File paramFile = null;

    // scroll bars for the work area
    //
    public JScrollPane scroller = null;

    // declare the popup menu objects
    //
    public JPopupMenu popup = null;
    public JMenuItem menuItem = null;

    // default strings for the popup menus
    //
    public String ordering = null;
    public String delete = null;
    public String expand = null;
    public String configuration = null;
    public String label = null;
    public String apply = null;
    public String update = null;
    public String cancel = null;
    public String saveApprove = null;
    public String loadApprove = null;

    // default number for duration
    //
    public double frame_duration = 0.01;
    public double signal_duration = 0.1;
    public double sample_frequency = 8000.0;

    // data object for reading the algorithm resource file
    //
    public Data data = null;
    public Parser parser = null;

    // ---------------------------------------------------
    //
    // declare class constructors
    //
    // ---------------------------------------------------

    // method: DiGraph
    //
    // arguments: none
    // returns  : none
    //
    public DiGraph(String title) {
	
	// invoke the parent default constructor
	//
	super(title);

	//instantiate the data class
	//
	data = new Data();
	
	// run the parser
	//
	parser = new Parser(data);
	
	// initialize the vectors data members
	//
	vertices = new Vector(100, 50);
	coeffLabels = new Vector(100, 50);
	dataLabels = new Vector(100, 50);
	clipboard = new Vector(10, 10);
	selectedVertices = new Vector(100, 50);
	
	// initialize the hashtables 
	//
	tagToVertex = new Hashtable(50);

	// instantiate the process algorithm association
	//
	currAssociation = new Association();

	// initialize the popup menu strings
	//
	ordering = new String("Ordering");
	delete = new String("Delete");
	configuration = new String("Configuration");

	// create the popup menu for the process vertex
	//
	popup = new JPopupMenu();
	menuItem = new JMenuItem(configuration);
	menuItem.addActionListener(this);
	popup.add(menuItem);
	popup.addSeparator();

	menuItem = new JMenuItem(ordering);
	menuItem.addActionListener(this);
	popup.add(menuItem);

	menuItem = new JMenuItem(delete);
	menuItem.addActionListener(this);
	popup.add(menuItem);

	// set the font of the popup menu
	//
	popup.setFont(newCoeffFont);

	// create the menu to control functionality
	//
	mainMenu = new MainMenu(this);

	// create a work area to drag and drop components
	//
	workArea = new WorkArea(vertices, this);
	workArea.addMouseListener(this);
	workArea.addMouseMotionListener(this);

	// add scroll panes to the workarea
	//
	scroller = new JScrollPane(workArea, 
				   JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
				   JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
	
	// set the dimensions of the scroller
	//
	scroller.setPreferredSize(new Dimension(MAX_WIDTH, MAX_HEIGHT));

	// add the components
	//
	this.getContentPane().add(mainMenu, BorderLayout.NORTH);
	this.getContentPane().add(scroller, BorderLayout.CENTER);
	mainMenu.add_components();

	// create and initialize input configuration vertex
	//
	inVertex = new Vertex("system", ALGORITHM, NONE);
	inVertex.association = "AudioFrontEnd";
	
	// to simplify the creation, the data vectors will be trimmed to
	// only include the transform we're looking at and saved into
	// these three vectors for use in a bit
	//
	Vector labels2 = new Vector(5,5);
	Vector types2 = new Vector(5,5);
	Vector values2 = new Vector(5,5);
	
	for(int j=data.association.indexOf(inVertex.association); 
	    j <= data.association.lastIndexOf(inVertex.association);
	    j++) {
	    if(j != -1) {
		labels2.add(data.name.get(j));
		types2.add(data.type.get(j));
		values2.add(data.values.get(j));
	    }
	}	
	
	// initialize the vertex to the default values for its type
	//
	inVertex.initializeConfig(labels2, values2, types2,
				    inVertex.association, data);
	
	// create and initialize output configuration vertex
	//
	outVertex = new Vertex("system", ALGORITHM, NONE);
	outVertex.association = "Audio_Output";
	
	// to simplify the creation, the data vectors will be trimmed to
	// only include the transform we're looking at and saved into
	// these three vectors for use in a bit
	//
	Vector labels3 = new Vector(5,5);
	Vector types3 = new Vector(5,5);
	Vector values3 = new Vector(5,5);
	
	for(int j=data.association.indexOf(outVertex.association); 
	    j <= data.association.lastIndexOf(outVertex.association);
	    j++) {
	    if(j != -1) {
		labels3.add(data.name.get(j));
		types3.add(data.type.get(j));
		values3.add(data.values.get(j));
	    }
	}	
	
	// initialize the vertex to the default values for its type
	//
	outVertex.initializeConfig(labels3, values3, types3,
				    outVertex.association, data);

    }


    // method: resetVertexFocus
    //
    // arguments: none
    // return: none
    //
    // resets the parent and child relationships
    //
    public void resetVertexFocus() {
	
	// reset the parent and child focus
	//
	vertexChild = null;
	vertexParent = null;

	// reset the current vertex selected
	//
	initVertexFocus = null;
	currVertexFocus = null;

	// reset the arc enables
	//
	enableArcInsertion = false;
	enableArcDeletion = false;

	// reset component enables
	//
	enableCompDeletion = false;

	// repaint the workarea
	//
	workArea.repaint();
    }

    // method: updateVertexFocus
    //
    // arguments:
    //    MouseEvent e: (input) input mouse event
    // return: none
    //
    // updates the parent and child relationships
    //
    public void updateVertexFocus(MouseEvent e) {
	
	// check to make sure that the vertex parent is valid
	//
	if (vertexParent == null) {
	    
	    // highligh the current vertex parent
	    //
	    vertexParent = (Vertex)e.getSource();
	}

	// initialize the child if the vertex parent is valid
	//
	else {

	    // initialize the child of the connection
	    //
	    vertexChild = (Vertex)e.getSource();
	}
    }

    // method: createAlgorithm
    //
    // arguments:
    //   String algorithmstr: name of the algorithm that fired the event
    // returns: none
    //
    // this method creates an algorithm object
    //
    public void createAlgorithm(String algorithmstr) {

	// determine which algorithm fired the event
	//
	int action = data.association.indexOf(algorithmstr);
	
	// if the action is found in the list of transforms
	//
	if (action != -1) {
	    
	    String image_name = null;
	    String image_association= null;
	    String icon_name = null;
	    
	    // tells the program which transform it is looking to match
	    //
	    image_association = algorithmstr;
	    
	    // scans through the association until 
	    // it finds the largeIcon key
	    //
	    for(int j=data.association.indexOf(image_association); 
		j <= data.association.lastIndexOf(image_association); 
		j++) {
		
		if (j != -1) {
		    if (((String)(data.name.get(j))).equals(ALGORITHM_ICON_BIG)) {
			
			// sets the image_name to the value held 
			// in large icon
			//
			image_name = (String)data.values.elementAt(j);
		    }
		    if (((String)(data.name.get(j))).equals("iconName")) {
			
			// sets the image_name to the value held 
			// in large icon
			//
			icon_name = (String)data.values.elementAt(j);
		    }  
		}
	    }
	    
	    // check to see if the file exists. If it does not exist,
	    // use a default image.
	    //
	    if(image_name != null) {
		
		File image_file = new File(image_name);
		if (image_file.exists() == false)
		    image_name = ALGORITHM_DEFAULT;
	    }
	    else {
		image_name = ALGORITHM_DEFAULT;
	    }
	    
	    // create the vertex for the work area
	    //
	    ImageIcon vertex_icon = new ImageIcon(image_name);
	    if(image_association.equals("FourierTransform")) {
		image_name = GUI_PATH +"/lib/images/isip_transform_builder/icons/algorithm_00.gif";
		vertex_icon = new ImageIcon(image_name);
	    }

	    Vertex  vertex = new Vertex(vertex_icon , ALGORITHM);
	    vertex.setVertexName(algorithmstr);
	    if (algorithmstr.length() > 4) {
		vertex.setText(algorithmstr.substring(0, 4));
	    }
	    else {
		vertex.setText(algorithmstr);
	    }

	    if(algorithmstr.equals("Generator")) {
		vertex.setText("");
		vertex.setVertexImpl(INPUT);
	    }
	    if(algorithmstr.equals("FilterBank")) {
		vertex.setText("FilB");
	    }
	    if(image_association.equals("AudioFrontEnd")) {
		if(!inputBlockExist)
		    inputBlockExist = true;
		else {
		    JFrame frame = new JFrame("Warning");
		    JOptionPane.showMessageDialog(frame, "An input** block is already present.");	
		
		    // Create an instance of java.awt.Cursor
		    Cursor c = new Cursor ( Cursor.HAND_CURSOR );
		    
		    // Set cursor for the frame component
		    this.setCursor (c);
		    return;
		}
	    }
	    
            if(icon_name != null) {
		vertex.setText(icon_name);
		vertex.setIconName(icon_name);
	    }

	    // to simplify the creation, the data vectors will be
	    // trimmed to only include the transform we're looking
	    // at and saved into these three vectors for use in a
	    // bit
	    //
	    Vector labels = new Vector(5,5);
	    Vector types = new Vector(5,5);
	    Vector values = new Vector(5,5);
	    
	    for(int j=data.association.indexOf(image_association); 
		j <= data.association.lastIndexOf(image_association); 
		j++) {
		
		if(j != -1) {
		    labels.add(data.name.get(j));