scatter.java

一个用于排队系统仿真的开源软件,有非常形象的图象仿真过程!

				if(xStart > xEnd && yStart > yEnd) g.drawRect(xEnd,yEnd,xStart-xEnd,yStart-yEnd);
			}
		}
		
		public void mouseClicked(MouseEvent e) {
			if(e.getButton() == MouseEvent.BUTTON3){
				popup.show(p,e.getX(),e.getY());
			}
		}

		public void mousePressed(MouseEvent e) {
			// Controllo che la pressione del mouse risulti all'interno dell'area del grafico
			if((e.getX() - UpperLeftGraph.x)>=0 && (e.getY() - UpperLeftGraph.y)>=0 && 
			   (e.getX() - UpperLeftGraph.x)<Scatter.this.WIDTH &&(e.getY() - UpperLeftGraph.y)<Scatter.this.HEIGHT){
				// Start visualizzazione zoom area
				if(e.getButton() == MouseEvent.BUTTON1){
					xStart = e.getX();
					yStart = e.getY();
					zoomming = true;
				}
			}			
		}

		public void mouseReleased(MouseEvent e) {
			if(xStart == e.getX() && yStart == e.getY()){
				zoomming = false;
				return;
			}
			// Controllo che il mouse venga rilasciato all'interno del grafico
			if((e.getX() - UpperLeftGraph.x)>=0 &&(e.getY() - UpperLeftGraph.y)>=0 &&
			   (e.getX()- UpperLeftGraph.x)<Scatter.this.WIDTH &&(e.getY() - UpperLeftGraph.y)<Scatter.this.HEIGHT && 
			    zoomming && e.getButton() == MouseEvent.BUTTON1){
				xEnd = e.getX();
				yEnd = e.getY();
				zoomming = false;
				double rangeX = xMax - xMin;
				double rangeY = yMax - yMin;
				if(xStart < xEnd && yStart < yEnd){
					xMin = xMin + rangeX / (Scatter.this.WIDTH -2) * (xStart - UpperLeftGraph.x);
					yMax  = yMax - rangeY /(Scatter.this.WIDTH -2) * (yStart - UpperLeftGraph.y);
					xMax = xMin + rangeX / (Scatter.this.WIDTH -2) * (xEnd - xStart);
					yMin = yMax - rangeY / (Scatter.this.WIDTH -2) * (yEnd - yStart);	
				}
				if(xStart < xEnd && yStart > yEnd){
					xMin = xMin + rangeX / (Scatter.this.WIDTH -2) * (xStart - UpperLeftGraph.x);
					yMax  = yMax - rangeY / (Scatter.this.WIDTH -2) * (yEnd - UpperLeftGraph.y);
					xMax = xMin + rangeX / (Scatter.this.WIDTH -2) * (xEnd - xStart);
					yMin = yMax - rangeY / (Scatter.this.WIDTH -2) * (yStart - yEnd);	
				}
				if(xStart > xEnd && yStart < yEnd){
					xMin = xMin + rangeX / (Scatter.this.WIDTH -2) * (xEnd - UpperLeftGraph.x);
					yMax  = yMax - rangeY / (Scatter.this.WIDTH -2) * (yStart - UpperLeftGraph.y);
					xMax = xMin + rangeX / (Scatter.this.WIDTH -2) * (xStart - xEnd);
					yMin = yMax - rangeY / (Scatter.this.WIDTH -2) * (yEnd - yStart);
				}
				if(xStart > xEnd && yStart > yEnd){
					xMin = xMin + rangeX / (Scatter.this.WIDTH -2) * (xEnd - UpperLeftGraph.x);
					yMax  = yMax - rangeY / (Scatter.this.WIDTH -2) * (yEnd - UpperLeftGraph.y);
					xMax = xMin + rangeX / (Scatter.this.WIDTH -2) * (xStart - xEnd);
					yMin = yMax - rangeY / (Scatter.this.WIDTH -2) * (yStart - yEnd);
				}
				
				first = true;
				Scatter.this.repaint();
				this.repaint();
				return;
			}else{
				// Annullo lo zoom
				zoomming = false;
				this.repaint();
			}
		}

		public void mouseEntered(MouseEvent e) {
			
		}

		public void mouseExited(MouseEvent e) {
			
		}

		public void mouseDragged(MouseEvent e) {
			if((e.getX() - UpperLeftGraph.x)>=0 &&(e.getY() - UpperLeftGraph.y)>=0 &&
			   (e.getX()- UpperLeftGraph.x)<Scatter.this.WIDTH &&(e.getY() - UpperLeftGraph.y)<Scatter.this.HEIGHT && 
				zoomming){
				xEnd = e.getX();
				yEnd = e.getY();
				p.repaint();
			}
		}

		public void mouseMoved(MouseEvent e) {
			
		}
	}
	
	protected class ScatterPopupMenu extends JPopupMenu{
		public JMenuItem restore;
		public JMenuItem saveAs;
		public JMenu point;
		
		private AbstractAction commonActionSize = new AbstractAction(){
			public void actionPerformed(ActionEvent e) {
				if(e.getActionCommand().equals("Size 1")){
					pointSize = 1;
				}
				if(e.getActionCommand().equals("Size 2")){
					pointSize = 2;
				}
				if(e.getActionCommand().equals("Size 3")){
					pointSize = 3;
				}
				if(e.getActionCommand().equals("Size 4")){
					pointSize = 4;
				}
				if(e.getActionCommand().equals("Size 5")){
					pointSize = 5;
				}
				first = true;
				Scatter.this.repaint();
			}
		};
		
		public ScatterPopupMenu(){
			restore = new JMenuItem("Original view");
			saveAs = new JMenuItem("Save as...");
			point = new JMenu("Point size");
			for(int i = 0 ; i < 5; i++){
				JMenuItem m = new JMenuItem();
				m.setAction(commonActionSize);
				m.setText("Size " + Integer.toString((i+1)));
				point.add(m);
			}
			
			this.add(restore);
			this.addSeparator();
			this.add(point);
			this.addSeparator();
			this.add(saveAs);
			addListeners();
		}
		private void addListeners(){
			restore.addActionListener(new ActionListener(){
				public void actionPerformed(ActionEvent e) {
					xMin = Scatter.this.model.getMatrix().getVariables()[xVar].getUniStats().getMinValue();
					xMax = Scatter.this.model.getMatrix().getVariables()[xVar].getUniStats().getMaxValue();
					yMin = Scatter.this.model.getMatrix().getVariables()[yVar].getUniStats().getMinValue();
					yMax = Scatter.this.model.getMatrix().getVariables()[yVar].getUniStats().getMaxValue();
					first = true;
					zoomming = false;
					Scatter.this.p.repaint();
					Scatter.this.repaint();					
				}
			});
			saveAs.addActionListener(new ActionListener(){
				public void actionPerformed(ActionEvent e) {
					Scatter.this.showScreenShotDialog();
				}
			});
		}
	}
	/**
     * Custom file chooser class
     */
    protected class PlotImagesFileChooser extends JFileChooser {
        protected PlotImagesFileFilter defaultFilter;
        /**
         * Creates a File chooser in the appropriate directory user deafault.
         * @param defaultFilter default file filter
         */
        public PlotImagesFileChooser(PlotImagesFileFilter defaultFilter) {
            super(new File(System.getProperty("user.dir")));
            this.defaultFilter = defaultFilter;
        }

        /**
         * Overrides default method to provide a warning if saving over an existing file
         */
        public void approveSelection() {
            // Gets the choosed file name
            String name = getSelectedFile().getName();
            String parent = getSelectedFile().getParent();
            if (getDialogType() == OPEN_DIALOG) {
                super.approveSelection();
            }
            if (getDialogType() == SAVE_DIALOG) {
                PlotImagesFileFilter used = ((PlotImagesFileFilter)this.getFileFilter());
                if (!name.toLowerCase().endsWith(used.getExtension())) {
                    name = name + used.getExtension();
                    setSelectedFile(new File(parent, name));
                }
                if (getSelectedFile().exists()) {
                    int resultValue = JOptionPane.showConfirmDialog(this,
                            "<html>File <font color=#0000ff>" + name + "</font> already exists in this folder.<br>Do you want to replace it?</html>",
                            "JMT - Warning",
                            JOptionPane.OK_CANCEL_OPTION,
                            JOptionPane.WARNING_MESSAGE);
                    if (resultValue == JOptionPane.OK_OPTION) {
                        getSelectedFile().delete();
                        super.approveSelection();
                    }
                } else {
                    super.approveSelection();
                }
            }
        }
    }

    /**
     * Inner class used to create simple file filters with only extension check
     */
    protected class PlotImagesFileFilter extends javax.swing.filechooser.FileFilter {
        private String extension, description;

        /**
         * Creates a new filefilter with specified extension and description
         * @param extension extension of this filter (for example ".jmt")
         * @param description description of this filter
         */
        public PlotImagesFileFilter(String extension, String description) {
            this.extension = extension;
            this.description = description;
        }
        /**
         * Whether the given file is accepted by this filter.
         */
        public boolean accept(File f) {
            String name = f.getName().toLowerCase();
            return name.endsWith(extension) || f.isDirectory();
        }
        /**
         * The description of this filter
         * @see javax.swing.filechooser.FileView#getName
         */
        public String getDescription() {
            return description + " (*" + extension + ")";
        }

        /**
         * Gets extension of this filter
         * @return extension of this filter
         */
        public String getExtension() {
            return extension;
        }
    }
}