//package code.iface.compass; import java.awt.*; import java.awt.image.*; import java.net.*; import java.awt.Color; import java.awt.event.*; import javax.swing.*; //import code.iface.utils.*; //import code.operator.compass.*; //import code.operator.utils.*; /** * *SCompassScreen is the user interface to the Compass *algorithm. It is run as an applet *embedded in the file compass.htm *@author Timothy Sharman */ public class SCompassScreen extends VisionApplet3{ //The operator class for performing compass edge detection. It's a thread Compass compass; //The two image answer returned by the compass TwoImages answer; //Local variables to signal what parameter to pass to the operator boolean coloured = false; int kertype = 0; float scalevalue = 1; int offsetvalue = 0; //The listeners for the GUI private ComboListener kernelcl = new ComboListener(); private ComboListener pixcl = new ComboListener(); private ButtonListener startbl = new ButtonListener(); private ButtonListener abortbl = new ButtonListener(); private WinListener colorwl = new WinListener(); private ButtonListener colorbl = new ButtonListener(); //the components for the interface private JComboBox kernelchoice = new JComboBox(); private JLabel kernellabel = new JLabel("Kernel Type"); private JComboBox labelchoice = new JComboBox(); private JLabel colourlabel = new JLabel("Labelling Type"); private JButton startbutton = new JButton("Apply Compass"); private JButton abortbutton = new JButton("Stop"); private JTextField time_taken = new JTextField(20); private JLabel time = new JLabel("Time"); private JLabel out2 = new JLabel("Pixel Labelling"); private JLabel out3 = new JLabel("Edge Image"); private JLabel offsetlabel = new JLabel("Offset"); private JTextField offset = new JTextField(5); private JLabel scalelabel = new JLabel("Scale"); private JTextField scale = new JTextField(5); private JFrame colorFrame = new JFrame("Color Assignment"); private JLabel viewLabel = new JLabel("View Color Assignments"); private JButton colorButton = new JButton("Color Map"); private String picName = "colors.gif"; private Icon pic; private JLabel picLabel; public void add_extra() { //initialise the operator constructors compass = new Compass(); // get colored icon try { URL thepicURL = new URL(getDocumentBase(),picName); pic = new ImageIcon(thepicURL); } catch (MalformedURLException e4) { JOptionPane.showMessageDialog(null,("Can't find "+picName), "Load Error", JOptionPane.WARNING_MESSAGE); return; } //Set up the frame picLabel = new JLabel(); picLabel. setIcon(pic); colorFrame. getContentPane(). add(picLabel); //Set up the bottom mid panel bm. remove(output); bmc. gridx = 0; bmc. gridy = 0; bmlayout. setConstraints(out2, bmc); bm. add(out2); //Set up the bottom right panel br. remove(output2); brc. gridx = 0; brc. gridy = 0; brlayout. setConstraints(out3, brc); br. add(out3); //Set up the mid layout midc. weighty = 0.5; midc. gridx = 0; midc. gridy = 0; midlayout. setConstraints(kernellabel, midc); mid. add(kernellabel); midc. gridx = 1; midc. gridy = 0; midlayout. setConstraints(kernelchoice, midc); kernelchoice. addItem("Prewitt"); kernelchoice. addItem("Sobel"); kernelchoice. addItem("Kirsch"); kernelchoice. addItem("Robinson"); mid. add(kernelchoice); kernelchoice. addActionListener(kernelcl); midc. gridx = 0; midc. gridy = 1; midlayout. setConstraints(colourlabel, midc); mid. add(colourlabel); midc. gridx = 1; midc. gridy = 1; midlayout. setConstraints(labelchoice, midc); labelchoice. addItem("Greyscale"); labelchoice. addItem("Color"); mid. add(labelchoice); labelchoice. addActionListener(pixcl); midc. gridx = 0; midc. gridy = 2; midlayout. setConstraints(scalelabel, midc); mid. add(scalelabel); midc. gridx = 1; midc. gridy = 2; midlayout. setConstraints(scale, midc); mid. add(scale); scale. setText("1.0"); midc. gridx = 0; midc. gridy = 3; midlayout. setConstraints(offsetlabel, midc); mid. add(offsetlabel); midc. gridx = 1; midc. gridy = 3; midlayout. setConstraints(offset, midc); mid. add(offset); offset. setText("0"); midc. gridx = 0; midc. gridy = 4; midlayout. setConstraints(viewLabel, midc); mid. add(viewLabel); midc. gridx = 1; midc. gridy = 4; midlayout. setConstraints(colorButton, midc); mid. add(colorButton); colorButton. addActionListener(colorbl); midc. gridx = 0; midc. gridy = 5; midlayout. setConstraints(startbutton, midc); startbutton .setBackground(Color.green); mid. add(startbutton); startbutton. addActionListener(startbl); midc. gridx = GridBagConstraints.RELATIVE; abortbutton. setBackground(Color.red); midlayout. setConstraints(abortbutton, midc); mid. add(abortbutton); abortbutton. addActionListener(abortbl); midc. gridx = 0; midc. gridy = 6; midlayout. setConstraints(time, midc); mid. add(time); midc. gridx = 1; midlayout. setConstraints(time_taken, midc); time_taken. setEditable(false); mid. add(time_taken); mid. repaint(); } /** *Handles the actions performed inside any extra windows * *@param evt The event which caused this object to be called * */ class WinListener extends WindowAdapter { public void windowClosing(WindowEvent e) { colorFrame. setVisible(false); } } /** * *Handles the actions performed when combo lists on the interface are selected. * *@param evt The event which caused this object to be called * */ class ComboListener implements ActionListener { public void actionPerformed(ActionEvent evt) { JComboBox cb = (JComboBox)evt.getSource(); if( cb.getSelectedItem().equals("Prewitt") ) { kertype = 0; } if( cb.getSelectedItem().equals("Sobel") ) { kertype = 1; } if( cb.getSelectedItem().equals("Kirsch") ) { kertype = 2; } if( cb.getSelectedItem().equals("Robinson") ) { kertype = 3; } if( cb.getSelectedItem().equals("Greyscale") ) { coloured = false; } if( cb.getSelectedItem().equals("Color") ) { coloured = true; } } } /** * *Handles the actions performed when buttons on the interface are pressed. * *@param evt The event which caused this object to be called * */ class ButtonListener implements ActionListener { public void actionPerformed(ActionEvent evt) { JButton b = (JButton)evt.getSource(); if( b == startbutton ) { try{ offsetvalue = Integer. valueOf (offset.getText()). intValue(); scalevalue = Float. valueOf(scale.getText()).floatValue(); time_msec = System.currentTimeMillis(); answer = compass. apply_compass(src_1d, d_w, d_h, kertype, coloured, scalevalue, offsetvalue); dest_1d2 = answer. image1; dest_1d = answer. image2; time_msec = System.currentTimeMillis() - time_msec; time_taken. setText(new Long(time_msec).toString()+" msecs"); //The sizes must be reduced to allow proper displaying d_w = d_w - 2; d_h = d_h - 2; outsize1. setText(d_w+" x "+d_h); outsize2. setText(d_w+" x "+d_h); dest = createImage(new MemoryImageSource(d_w,d_h,dest_1d,0,d_w)); dest2 = createImage(new MemoryImageSource(d_w,d_h,dest_1d2,0,d_w)); /* Sizes must now be increased back. If this doesn't happen * then the image becomes slowly distorted each time the operator * is reapplied due to the fact the output canvas is being shrunk * by two each application */ d_w = d_w + 2; d_h = d_h + 2; dest_canvas. updateImage(dest); dest_canvas2. updateImage(dest2); //Re-add the pixel listener to the new canvas PixelListener bmpl = new PixelListener(); dest_canvas. addMouseMotionListener(bmpl); PixelListener brpl = new PixelListener(); dest_canvas2. addMouseMotionListener(brpl); } catch(NumberFormatException e){ JOptionPane.showMessageDialog(null,("Invalid parameters specified"), ("Error!"), JOptionPane.WARNING_MESSAGE); } container. validate(); } else if( b == abortbutton ) { time_taken. setText(""); } else if( b == colorButton ) { colorFrame.pack(); colorFrame.setVisible(true); } } } public void set_src_image(int [] input_img , int w, int h, String name) { set_src_image2(input_img, w, h, name); //create a new compass operator compass = new Compass(); } /** *Used by the browser to find out what the applet is for * *@return the function of the applet */ public String getAppletInfo() { return "An applet for performing compass edge detection on an image. Written by Timothy Sharman"; } }