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EncoderGUI.java
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package huffcoding;
import java.awt.Color;
import java.awt.EventQueue;
import java.awt.Font;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.SystemColor;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.JSeparator;
import javax.swing.JTextArea;
import javax.swing.SwingConstants;
public class EncoderGUI {
private JFrame frmHuffmanEncoder;
private JButton button_Encode;
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
EncoderGUI window = new EncoderGUI();
window.frmHuffmanEncoder.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
public EncoderGUI() {
initialize();
}
private void initialize() {
final JFileChooser fileDialog = new JFileChooser();
frmHuffmanEncoder = new JFrame();
frmHuffmanEncoder.setFont(new Font("Garamond", Font.BOLD, 16));
frmHuffmanEncoder.getContentPane().setBackground(new Color(0, 0, 0));
frmHuffmanEncoder.getContentPane().setForeground(new Color(255, 255, 255));
frmHuffmanEncoder.setResizable(true);
frmHuffmanEncoder.setTitle("Huffman Encoder");
frmHuffmanEncoder.setBounds(100, 100, 908, 552);
frmHuffmanEncoder.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
GridBagLayout gridBagLayout = new GridBagLayout();
gridBagLayout.columnWidths = new int[] { 0, 0, 386, 0, -67, 412, 0, -107, 0, 0, 0, 0 };
gridBagLayout.rowHeights = new int[] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
gridBagLayout.columnWeights = new double[] { 0.0, 0.0, 1.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 0.0, 0.0, Double.MIN_VALUE };
gridBagLayout.rowWeights = new double[] { 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, Double.MIN_VALUE };
frmHuffmanEncoder.getContentPane().setLayout(gridBagLayout);
JSeparator topSeparator = new JSeparator();
GridBagConstraints gbc_topSeparator = new GridBagConstraints();
gbc_topSeparator.insets = new Insets(0, 0, 5, 5);
gbc_topSeparator.gridx = 2;
gbc_topSeparator.gridy = 0;
frmHuffmanEncoder.getContentPane().add(topSeparator, gbc_topSeparator);
JSeparator leftSeparator = new JSeparator();
GridBagConstraints gbc_leftSeparator = new GridBagConstraints();
gbc_leftSeparator.gridheight = 2;
gbc_leftSeparator.insets = new Insets(0, 0, 5, 5);
gbc_leftSeparator.gridx = 1;
gbc_leftSeparator.gridy = 1;
frmHuffmanEncoder.getContentPane().add(leftSeparator, gbc_leftSeparator);
JLabel label_FileSelected_1 = new JLabel("");
label_FileSelected_1.setFont(new Font("Garamond", Font.BOLD, 14));
label_FileSelected_1.setBackground(new Color(175, 238, 238));
label_FileSelected_1.setForeground(new Color(255, 255, 255));
GridBagConstraints gbc_label_FileSelected_1 = new GridBagConstraints();
gbc_label_FileSelected_1.gridwidth = 3;
gbc_label_FileSelected_1.anchor = GridBagConstraints.WEST;
gbc_label_FileSelected_1.insets = new Insets(0, 0, 5, 5);
gbc_label_FileSelected_1.gridx = 3;
gbc_label_FileSelected_1.gridy = 1;
frmHuffmanEncoder.getContentPane().add(label_FileSelected_1, gbc_label_FileSelected_1);
JSeparator rightSeparator = new JSeparator();
GridBagConstraints gbc_rightSeparator = new GridBagConstraints();
gbc_rightSeparator.gridheight = 2;
gbc_rightSeparator.insets = new Insets(0, 0, 5, 5);
gbc_rightSeparator.gridx = 8;
gbc_rightSeparator.gridy = 1;
frmHuffmanEncoder.getContentPane().add(rightSeparator, gbc_rightSeparator);
button_Encode = new JButton("Encode");
button_Encode.setFont(new Font("Garamond", Font.BOLD, 14));
button_Encode.setForeground(new Color(100, 149, 237));
button_Encode.setToolTipText(
"<html>After selecting the file, click Encode to encode the file.<br />The encoded file along with supporting files will be <br />created in the same directory from where the input file <br />was selected.</html>");
GridBagConstraints gbc_button_Encode = new GridBagConstraints();
gbc_button_Encode.insets = new Insets(0, 0, 5, 5);
gbc_button_Encode.gridx = 2;
gbc_button_Encode.gridy = 2;
frmHuffmanEncoder.getContentPane().add(button_Encode, gbc_button_Encode);
JButton showFileDialogButton = new JButton("Open File");
showFileDialogButton.setFont(new Font("Garamond", Font.BOLD, 14));
showFileDialogButton.setForeground(new Color(100, 149, 237));
showFileDialogButton.setToolTipText("Select a file from your system.");
showFileDialogButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
int returnVal = fileDialog.showOpenDialog(frmHuffmanEncoder);
if (returnVal == 0) {
java.io.File file = fileDialog.getSelectedFile();
if (!file.exists()) {
label_FileSelected_1.setText("File not found!");
} else {
label_FileSelected_1.setText("File Selected :" + file.getName());
}
} else {
label_FileSelected_1.setText("Open command cancelled by user.");
}
}
});
GridBagConstraints gbc_showFileDialogButton = new GridBagConstraints();
gbc_showFileDialogButton.insets = new Insets(0, 0, 5, 10);
gbc_showFileDialogButton.gridx = 2;
gbc_showFileDialogButton.gridy = 1;
frmHuffmanEncoder.getContentPane().add(showFileDialogButton, gbc_showFileDialogButton);
JLabel label_FinalAnswer = new JLabel("");
label_FinalAnswer.setForeground(SystemColor.window);
label_FinalAnswer.setFont(new Font("Garamond", Font.BOLD, 14));
GridBagConstraints gbc_label_FinalAnswer = new GridBagConstraints();
gbc_label_FinalAnswer.gridwidth = 8;
gbc_label_FinalAnswer.insets = new Insets(0, 0, 5, 5);
gbc_label_FinalAnswer.gridx = 2;
gbc_label_FinalAnswer.gridy = 3;
frmHuffmanEncoder.getContentPane().add(label_FinalAnswer, gbc_label_FinalAnswer);
JSeparator separator = new JSeparator();
GridBagConstraints gbc_separator = new GridBagConstraints();
gbc_separator.gridwidth = 7;
gbc_separator.insets = new Insets(0, 0, 5, 0);
gbc_separator.gridx = 4;
gbc_separator.gridy = 4;
frmHuffmanEncoder.getContentPane().add(separator, gbc_separator);
JSeparator lefttextArea_topSeparator = new JSeparator();
GridBagConstraints gbc_lefttextArea_topSeparator = new GridBagConstraints();
gbc_lefttextArea_topSeparator.insets = new Insets(0, 0, 5, 5);
gbc_lefttextArea_topSeparator.gridx = 2;
gbc_lefttextArea_topSeparator.gridy = 5;
frmHuffmanEncoder.getContentPane().add(lefttextArea_topSeparator, gbc_lefttextArea_topSeparator);
JSeparator lefttextArea_leftSeparator = new JSeparator();
GridBagConstraints gbc_lefttextArea_leftSeparator = new GridBagConstraints();
gbc_lefttextArea_leftSeparator.insets = new Insets(0, 0, 5, 5);
gbc_lefttextArea_leftSeparator.gridx = 0;
gbc_lefttextArea_leftSeparator.gridy = 6;
frmHuffmanEncoder.getContentPane().add(lefttextArea_leftSeparator, gbc_lefttextArea_leftSeparator);
JScrollPane scrollPane = new JScrollPane();
GridBagConstraints gbc_scrollPane = new GridBagConstraints();
gbc_scrollPane.fill = GridBagConstraints.BOTH;
gbc_scrollPane.insets = new Insets(0, 0, 5, 5);
gbc_scrollPane.gridx = 2;
gbc_scrollPane.gridy = 6;
frmHuffmanEncoder.getContentPane().add(scrollPane, gbc_scrollPane);
JTextArea textArea_CharFreq = new JTextArea();
textArea_CharFreq.setToolTipText("");
textArea_CharFreq.setFont(new Font("Garamond", Font.PLAIN, 13));
scrollPane.setViewportView(textArea_CharFreq);
JSeparator righttextArea_leftSeparator = new JSeparator();
GridBagConstraints gbc_righttextArea_leftSeparator = new GridBagConstraints();
gbc_righttextArea_leftSeparator.insets = new Insets(0, 0, 5, 5);
gbc_righttextArea_leftSeparator.gridx = 4;
gbc_righttextArea_leftSeparator.gridy = 6;
frmHuffmanEncoder.getContentPane().add(righttextArea_leftSeparator, gbc_righttextArea_leftSeparator);
JScrollPane scrollPane_1 = new JScrollPane();
GridBagConstraints gbc_scrollPane_1 = new GridBagConstraints();
gbc_scrollPane_1.gridwidth = 2;
gbc_scrollPane_1.fill = GridBagConstraints.BOTH;
gbc_scrollPane_1.insets = new Insets(0, 0, 5, 5);
gbc_scrollPane_1.gridx = 5;
gbc_scrollPane_1.gridy = 6;
frmHuffmanEncoder.getContentPane().add(scrollPane_1, gbc_scrollPane_1);
JTextArea textArea_encodeMap = new JTextArea();
textArea_encodeMap.setToolTipText("\r\n");
textArea_encodeMap.setFont(new Font("Garamond", Font.PLAIN, 13));
scrollPane_1.setViewportView(textArea_encodeMap);
JSeparator lefttextArea_rightSeparator = new JSeparator();
GridBagConstraints gbc_lefttextArea_rightSeparator = new GridBagConstraints();
gbc_lefttextArea_rightSeparator.anchor = GridBagConstraints.WEST;
gbc_lefttextArea_rightSeparator.insets = new Insets(0, 0, 5, 5);
gbc_lefttextArea_rightSeparator.gridx = 7;
gbc_lefttextArea_rightSeparator.gridy = 6;
frmHuffmanEncoder.getContentPane().add(lefttextArea_rightSeparator, gbc_lefttextArea_rightSeparator);
JSeparator righttextArea_rightSeparator = new JSeparator();
GridBagConstraints gbc_righttextArea_rightSeparator = new GridBagConstraints();
gbc_righttextArea_rightSeparator.insets = new Insets(0, 0, 5, 0);
gbc_righttextArea_rightSeparator.gridx = 10;
gbc_righttextArea_rightSeparator.gridy = 6;
frmHuffmanEncoder.getContentPane().add(righttextArea_rightSeparator, gbc_righttextArea_rightSeparator);
JSeparator righttextArea_bottomSeparator = new JSeparator();
GridBagConstraints gbc_righttextArea_bottomSeparator = new GridBagConstraints();
gbc_righttextArea_bottomSeparator.gridwidth = 6;
gbc_righttextArea_bottomSeparator.insets = new Insets(0, 0, 5, 0);
gbc_righttextArea_bottomSeparator.gridx = 5;
gbc_righttextArea_bottomSeparator.gridy = 7;
frmHuffmanEncoder.getContentPane().add(righttextArea_bottomSeparator, gbc_righttextArea_bottomSeparator);
JLabel label_CharFreqMap = new JLabel("Character Frequency Map");
label_CharFreqMap.setBackground(SystemColor.inactiveCaption);
label_CharFreqMap.setForeground(SystemColor.activeCaption);
label_CharFreqMap.setFont(new Font("Garamond", Font.BOLD, 14));
label_CharFreqMap.setHorizontalAlignment(SwingConstants.LEFT);
label_CharFreqMap.setVerticalAlignment(SwingConstants.TOP);
GridBagConstraints gbc_label_CharFreqMap = new GridBagConstraints();
gbc_label_CharFreqMap.fill = GridBagConstraints.VERTICAL;
gbc_label_CharFreqMap.insets = new Insets(0, 0, 5, 5);
gbc_label_CharFreqMap.gridx = 2;
gbc_label_CharFreqMap.gridy = 8;
frmHuffmanEncoder.getContentPane().add(label_CharFreqMap, gbc_label_CharFreqMap);
JLabel lblCharacterToCodeword = new JLabel("Character to CodeWord Map");
lblCharacterToCodeword.setForeground(SystemColor.activeCaption);
lblCharacterToCodeword.setFont(new Font("Garamond", Font.BOLD, 14));
lblCharacterToCodeword.setVerticalAlignment(SwingConstants.TOP);
lblCharacterToCodeword.setHorizontalAlignment(SwingConstants.LEFT);
GridBagConstraints gbc_lblCharacterToCodeword = new GridBagConstraints();
gbc_lblCharacterToCodeword.insets = new Insets(0, 0, 5, 5);
gbc_lblCharacterToCodeword.gridx = 5;
gbc_lblCharacterToCodeword.gridy = 8;
frmHuffmanEncoder.getContentPane().add(lblCharacterToCodeword, gbc_lblCharacterToCodeword);
JSeparator lefttextArea_bottomSeparator = new JSeparator();
GridBagConstraints gbc_lefttextArea_bottomSeparator = new GridBagConstraints();
gbc_lefttextArea_bottomSeparator.insets = new Insets(0, 0, 0, 5);
gbc_lefttextArea_bottomSeparator.gridx = 2;
gbc_lefttextArea_bottomSeparator.gridy = 9;
frmHuffmanEncoder.getContentPane().add(lefttextArea_bottomSeparator, gbc_lefttextArea_bottomSeparator);
button_Encode.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
textArea_CharFreq.setText(null);
textArea_encodeMap.setText(null);
if (label_FileSelected_1.getText() == "Open command cancelled by user.") {
} else if (!fileDialog.getSelectedFile().exists()) {
} else {
// Create the instance of HuffmanEncoder. This is where our compression begins.
huffmanEncoder huff = new huffmanEncoder();
try {
huff.encode(fileDialog.getSelectedFile().getAbsolutePath(), fileDialog.getSelectedFile().getParent());
} catch (FileNotFoundException e1) {
e1.printStackTrace();
} catch (IOException e1) {
e1.printStackTrace();
}
double a = (double) fileDialog.getSelectedFile().length();
File encodedFile = new File(fileDialog.getSelectedFile().getParent() + "\\encoded.txt");
double b = (double) encodedFile.length();
double c = ((a - b) / a) * 100;
label_FinalAnswer.setText("Original File : " + a + " bytes" + " || Encoded File : " + b + " bytes"
+ " || Compression Percentage : " + c);
textArea_CharFreq.append(huff.charFreq);
textArea_encodeMap.append(huff.finalMap);
}
}
});
frmHuffmanEncoder.setVisible(true);
}
}