svgnewopen.java

完全基于java开发的svg矢量绘图工具

	
	/**
	 * gets the module's name
	 * @return the module's name
	 */
	public String getName(){
		return idnewopen;
	}
	
	/**
	 * The class of the action that will be executed when clicking on the "New" menu item
	 */
	protected class NewActionListener implements ActionListener{
		
		/**
		 * the dialog box displayed when clicking on the "New" menu item
		 */
		private NewDialog dialog;
		
		/**
		 * the constructor of the class
		 */
		protected NewActionListener(){
		    
			if(getSVGEditor().getParent() instanceof JFrame){
				
				dialog=new NewDialog((JFrame)getSVGEditor().getParent());
				
			}else{
				
				dialog=new NewDialog(new JFrame(""));
			}

	        /*final AWTEventListener keyListener=new AWTEventListener(){
	            
	            public void eventDispatched(AWTEvent e) {
	                
	                if(e instanceof KeyEvent && dialog.isVisible()){
	                    
	                    KeyEvent kev=(KeyEvent)e;
                        
	                    if(kev.getID()==KeyEvent.KEY_PRESSED){
	                        
			                if(kev.getKeyCode()==KeyEvent.VK_ENTER){
			                    
			                    ok.doClick();
			                    
			                }else if(kev.getKeyCode()==KeyEvent.VK_CANCEL){

			                    cancel.doClick();
			                }
	                    }
	                }
	            }
	        };
	        
	        Toolkit.getDefaultToolkit().addAWTEventListener(keyListener, AWTEvent.KEY_EVENT_MASK);*/
		}
	
		/**
		 * the method called when receiving an event
		 * @param e the event
		 */
		public void actionPerformed(ActionEvent e){
            
            //sets the location of the dialog box
            int     x=(int)(getSVGEditor().getParent().getLocationOnScreen().getX()+getSVGEditor().getParent().getWidth()/2-dialog.getSize().getWidth()/2), 
                     y=(int)(getSVGEditor().getParent().getLocationOnScreen().getY()+getSVGEditor().getParent().getHeight()/2-dialog.getSize().getHeight()/2);
            
            dialog.setLocation(x,y);

			int res=dialog.showDialog();
			
			if(res==NewDialog.OK){
				
				String width=dialog.getWidthString(), height=dialog.getHeightString();
				
				newDoc(width, height);
			}
		}
		
		/**
		 * the class of the dialog that will be displayed when cliking on the New menu item
		 */
		protected class NewDialog extends JDialog{

			/**
			 * the OK constant
			 */
			public static final int OK=0;
			
			/**
			 * the CANCEL constant
			 */
			public static final int CANCEL=1;
			
			/**
			 * the width and height
			 */
			private String width="400", height="400";
			
			/**
			 * the unit
			 */
			private String unit="px";
			
			/**
			 * whether to preserve the ratio aspect or not
			 */
			private boolean preserveRatio=false;
			
			/**
			 * the ratio
			 */
			private double ratio=1;
			
			/**
			 * the returned type
			 */
			private int returnedRes=CANCEL;
						
			/**
			 * the constructor of the class
			 * @param parent the parent frame
			 */
			protected NewDialog(JFrame parent){
			    
				super(parent, labelnew, true);
				
				//creating the combo box used to change the units
				final JComboBox unitsCombo=getSVGEditor().getSVGToolkit().getUnitsComboBoxChooser();

				//the labels for the textfields
				JLabel widthLabel=new JLabel(newopenlabelwidth.concat(" :"));
				JLabel heightLabel=new JLabel(newopenlabelheight.concat(" :"));
				
				widthLabel.setHorizontalAlignment(SwingConstants.RIGHT);
				heightLabel.setHorizontalAlignment(SwingConstants.RIGHT);	
				
				//the textfields that will be used to enter the size values
				SpinnerNumberModel widthModel=new SpinnerNumberModel(400, 0, Double.MAX_VALUE, 1);
				SpinnerNumberModel heightModel=new SpinnerNumberModel(400, 0, Double.MAX_VALUE, 1);
				final JSpinner widthSpinner=new JSpinner(widthModel), heightSpinner=new JSpinner(heightModel);
				((JSpinner.DefaultEditor)widthSpinner.getEditor()).getTextField().setColumns(5);
				((JSpinner.DefaultEditor)heightSpinner.getEditor()).getTextField().setColumns(5);
				
				//the preserve ratio toggle button
				final JToggleButton preserveRatioButton=new JToggleButton("p");
				preserveRatioButton.setSelected(false);
				
				//creating the listener to the preserve ratio button
				preserveRatioButton.addActionListener(new ActionListener(){
					
					public void actionPerformed(ActionEvent evt) {

						preserveRatio=preserveRatioButton.isSelected();
						
						if(preserveRatio){
							
							ratio=((Double)widthSpinner.getValue()).doubleValue()/((Double)heightSpinner.getValue()).doubleValue();
						}
					}
				});
				
				//the buttons used to cancel or validate the values entered
				final JButton okButton=new JButton(labelok), cancelButton=new JButton(labelcancel);

				//adding the listener to the combo
				unitsCombo.addActionListener(new ActionListener(){
					
					public void actionPerformed(ActionEvent evt) {

						if(unitsCombo.getSelectedItem()!=null){
							
							//storing the old units values
							String oldUnit=unit;
							double oldWidthValue=SVGToolkit.getPixelledNumber(width+oldUnit);
							double oldHeightValue=SVGToolkit.getPixelledNumber(height+oldUnit);
							
							unit=unitsCombo.getSelectedItem().toString();

							//computing the new values
							double newWidthValue=SVGToolkit.convertFromPixelToUnit(oldWidthValue, unit);
							double newHeightValue=SVGToolkit.convertFromPixelToUnit(oldHeightValue, unit);

							//setting the new values
							width=newWidthValue+"";
							height=newHeightValue+"";
							
							widthSpinner.setValue(newWidthValue);
							heightSpinner.setValue(newHeightValue);
						}
					}
				});
				
				//adding the listener to the spinners
				ChangeListener changeListener=new ChangeListener(){
					
					public void stateChanged(ChangeEvent evt) {

						if(evt.getSource().equals(widthSpinner)){
							
							width=widthSpinner.getValue()+"";

							if(preserveRatio){
								
								heightSpinner.removeChangeListener(this);
								double h=((Double)widthSpinner.getValue()).doubleValue()/ratio;
								height=h+"";
								heightSpinner.setValue(h);
								
								heightSpinner.addChangeListener(this);
							}
							
						}else{
							
							height=heightSpinner.getValue()+"";
							
							if(preserveRatio){
								
								widthSpinner.removeChangeListener(this);
								
								double w=((Double)heightSpinner.getValue()).doubleValue()*ratio;
								width=w+"";
								widthSpinner.setValue(w);
								
								widthSpinner.addChangeListener(this);
							}
						}
					}
				};
				
				widthSpinner.addChangeListener(changeListener);
				heightSpinner.addChangeListener(changeListener);

				//adding the listener to the buttons
				ActionListener buttonsListener=new ActionListener(){
					
					public void actionPerformed(ActionEvent evt) {
						
						if(evt.getSource().equals(okButton)){
							
							returnedRes=OK;
							
						}else if(evt.getSource().equals(cancelButton)){
							
							returnedRes=CANCEL;
						}
						
						setVisible(false);
					}
				};
				
				okButton.addActionListener(buttonsListener);
				cancelButton.addActionListener(buttonsListener);
				
				//building the dialog
				JPanel contentPanel=new JPanel();
				
				GridBagLayout gridBag=new GridBagLayout();
				contentPanel.setLayout(gridBag);
				GridBagConstraints c=new GridBagConstraints();
				c.fill=GridBagConstraints.HORIZONTAL;
				c.insets=new Insets(2, 2, 2, 2);
				
				c.anchor=GridBagConstraints.EAST;
				c.gridwidth=1;
				gridBag.setConstraints(widthLabel, c);
				contentPanel.add(widthLabel);
				
				c.anchor=GridBagConstraints.WEST;
				c.gridwidth=1;
				gridBag.setConstraints(widthSpinner, c);
				contentPanel.add(widthSpinner);
				
				JLabel wpxLabel=new JLabel(" px");
				c.anchor=GridBagConstraints.WEST;
				c.gridwidth=GridBagConstraints.REMAINDER;
				c.fill=GridBagConstraints.NONE;
				gridBag.setConstraints(wpxLabel, c);
				contentPanel.add(wpxLabel);
				
				
				/*c.anchor=GridBagConstraints.CENTER;
				c.gridwidth=GridBagConstraints.REMAINDER;
				c.gridheight=2;
				gridBag.setConstraints(unitsCombo, c);
				contentPanel.add(unitsCombo);*/
				
				
				
				/*c.anchor=GridBagConstraints.CENTER;
				c.gridwidth=1;
				c.gridheight=2;
				gridBag.setConstraints(unitsCombo, c);
				contentPanel.add(unitsCombo);
				
				c.anchor=GridBagConstraints.CENTER;
				c.gridwidth=GridBagConstraints.REMAINDER;
				c.gridheight=2;
				gridBag.setConstraints(preserveRatioButton, c);
				contentPanel.add(preserveRatioButton);*/
				
				c.anchor=GridBagConstraints.EAST;
				c.fill=GridBagConstraints.HORIZONTAL;
				c.gridwidth=1;
				gridBag.setConstraints(heightLabel, c);
				contentPanel.add(heightLabel);
				
				c.anchor=GridBagConstraints.WEST;
				c.gridwidth=1;
				gridBag.setConstraints(heightSpinner, c);
				contentPanel.add(heightSpinner);
				
				JLabel hpxLabel=new JLabel(" px");
				c.anchor=GridBagConstraints.WEST;
				c.gridwidth=GridBagConstraints.REMAINDER;
				c.fill=GridBagConstraints.NONE;
				gridBag.setConstraints(hpxLabel, c);
				contentPanel.add(hpxLabel);
				
				//the buttons panel
				JPanel buttonsPanel=new JPanel();
				buttonsPanel.setLayout(new FlowLayout(FlowLayout.CENTER));
				buttonsPanel.add(okButton);
				buttonsPanel.add(cancelButton);
				
				getContentPane().setLayout(new BorderLayout(0, 4));
				getContentPane().add(contentPanel, BorderLayout.CENTER);
				getContentPane().add(buttonsPanel, BorderLayout.SOUTH);

				pack();
			}
		
			/**
			 * @return the width string
			 */
			public String getWidthString() {

				return width+unit;
			}
		
			/**
			 * @return the width string
			 */
			public String getHeightString() {

				return height+unit;
			}
		
			/**
			 * showing the new dialog
			 * @return whether the user clicked on the OK or CANCEL button
			 */
			public int showDialog(){
				
				setVisible(true);
				
				return returnedRes;
			}
		}
	}
	
	/**
	 * cancels all the actions that could be running
	 */
	public void cancelActions(){
		
	}

	/**
	 * layout some elements in the module
	 */
	public void initialize(){
		

	}
}