Soal Evaluasi Akhir Semester
- Gambarkan rancangan interfacenya.
- Gambarkan dan jelaskan Class Diagram penyusun dari image viewer yang akan dibuat.
- Implementasikan ke dalam program dan buat link nya di posting blog ini.
2.
3.
a. ImageViewer: Bagian kelas utama untuk aplikasi editor gambar
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import javax.swing.*;
import javax.swing.border.*;
import java.io.File;
import java.util.List;
import java.util.ArrayList;
import java.util.Iterator;
public class ImageViewer
{
private static final String VERSION = "Version 1.0";
private static JFileChooser fileChooser = new JFileChooser(System.getProperty("user.dir"));
private JFrame frame;
private ImagePanel imagePanel;
private JLabel filenameLabel;
private JLabel statusLabel;
private JButton smallerButton;
private JButton largerButton;
private JButton textButton;
private JButton cropButton;
private JButton rotButton;
private JButton rotaButton;
private JButton rotateButton;
private OFImage currentImage;
private List<Filter> filters;
public ImageViewer()
{
currentImage = null;
filters = createFilters();
makeFrame();
}
private void makeText()
{
if(currentImage != null) {
int width = currentImage.getWidth();
int height = currentImage.getHeight();
int xPosition = Integer.parseInt(JOptionPane.showInputDialog("X Position"));
int yPosition = Integer.parseInt(JOptionPane.showInputDialog("Y Position"));
float fontSize = Float.parseFloat(JOptionPane.showInputDialog("Font Size"));
String addText = JOptionPane.showInputDialog("Type Something..");
OFImage newImage = new OFImage(width, height);
for(int y = 0; y < height; y++) {
for(int x = 0; x < width; x++) {
Color col = currentImage.getPixel(x, y);
newImage.setPixel(x, y, col);
}
}
Graphics g = newImage.getGraphics();
g.setFont(g.getFont().deriveFont(fontSize));
g.drawString(addText, xPosition, yPosition);
g.dispose();
currentImage = newImage;
imagePanel.setImage(currentImage);
}
}
private void openFile()
{
int returnVal = fileChooser.showOpenDialog(frame);
if(returnVal != JFileChooser.APPROVE_OPTION) {
return;
}
File selectedFile = fileChooser.getSelectedFile();
currentImage = ImageFileManager.loadImage(selectedFile);
if(currentImage == null) {
JOptionPane.showMessageDialog(frame,
"The file was not in a recognized image file format.",
"Image Load Error",
JOptionPane.ERROR_MESSAGE);
return;
}
imagePanel.setImage(currentImage);
setButtonsEnabled(true);
showFilename(selectedFile.getPath());
showStatus("File loaded.");
frame.pack();
}
private void close()
{
currentImage = null;
imagePanel.clearImage();
showFilename(null);
setButtonsEnabled(false);
}
private void saveAs()
{
if(currentImage != null) {
int returnVal = fileChooser.showSaveDialog(frame);
if(returnVal != JFileChooser.APPROVE_OPTION) {
return;
}
File selectedFile = fileChooser.getSelectedFile();
ImageFileManager.saveImage(currentImage, selectedFile);
showFilename(selectedFile.getPath());
}
}
private void quit()
{
System.exit(0);
}
private void applyFilter(Filter filter)
{
if(currentImage != null) {
filter.apply(currentImage);
frame.repaint();
showStatus("Applied: " + filter.getName());
}
else {
showStatus("No image loaded.");
}
}
private void showAbout()
{
JOptionPane.showMessageDialog(frame,
"ImageEditor\n" + VERSION,
"About ImageEditor",
JOptionPane.INFORMATION_MESSAGE);
}
private void makeLarger()
{
if(currentImage != null) {
int width = currentImage.getWidth();
int height = currentImage.getHeight();
OFImage newImage = new OFImage(width * 2, height * 2);
for(int y = 0; y < height; y++) {
for(int x = 0; x < width; x++) {
Color col = currentImage.getPixel(x, y);
newImage.setPixel(x * 2, y * 2, col);
newImage.setPixel(x * 2 + 1, y * 2, col);
newImage.setPixel(x * 2, y * 2 + 1, col);
newImage.setPixel(x * 2+1, y * 2 + 1, col);
}
}
currentImage = newImage;
imagePanel.setImage(currentImage);
frame.pack();
}
}
private void makeSmaller()
{
if(currentImage != null) {
int width = currentImage.getWidth() / 2;
int height = currentImage.getHeight() / 2;
OFImage newImage = new OFImage(width, height);
for(int y = 0; y < height; y++) {
for(int x = 0; x < width; x++) {
newImage.setPixel(x, y, currentImage.getPixel(x * 2, y * 2));
}
}
currentImage = newImage;
imagePanel.setImage(currentImage);
frame.pack();
}
}
private void crop()
{
if (currentImage != null)
{
int width = currentImage.getWidth();
int height = currentImage.getWidth();
int xFrom = Integer.parseInt(JOptionPane.showInputDialog("x.to"));
int yFrom = Integer.parseInt(JOptionPane.showInputDialog("y.to"));
int xTo = Integer.parseInt(JOptionPane.showInputDialog("x.from"));
int yTo = Integer.parseInt(JOptionPane.showInputDialog("y.from"));
OFImage newImage = new OFImage(xTo - xFrom, yTo - yFrom);
for (int y = 0; y < yTo - yFrom; y++)
{
for (int x = 0; x < xTo - xFrom; x++)
{
newImage.setPixel(x, y, currentImage.getPixel(x + xFrom, y + yFrom));
}
}
currentImage = newImage;
imagePanel.setImage(currentImage);
frame.pack();
}
}
private void showFilename(String filename)
{
if(filename == null) {
filenameLabel.setText("No file displayed.");
}
else {
filenameLabel.setText("File: " + filename);
}
}
private void showStatus(String text)
{
statusLabel.setText(text);
}
private void setButtonsEnabled(boolean status)
{
smallerButton.setEnabled(status);
largerButton.setEnabled(status);
cropButton.setEnabled(status);
rotButton.setEnabled(status);
rotaButton.setEnabled(status);
rotateButton.setEnabled(status);
}
private List<Filter> createFilters()
{
List<Filter> filterList = new ArrayList<Filter>();
filterList.add(new DarkerFilter("Darker"));
filterList.add(new LighterFilter("Lighter"));
filterList.add(new ThresholdFilter("Threshold"));
filterList.add(new InvertFilter("Invert"));
filterList.add(new SolarizeFilter("Solarize"));
filterList.add(new SmoothFilter("Smooth"));
filterList.add(new PixelizeFilter("Pixelize"));
filterList.add(new MirrorFilter("Mirror"));
filterList.add(new GrayScaleFilter("Grayscale"));
filterList.add(new EdgeFilter("Edge Detection"));
filterList.add(new FishEyeFilter("Fish Eye"));
return filterList;
}
private void makeFrame()
{
frame = new JFrame("ImageEditor");
JPanel contentPane = (JPanel)frame.getContentPane();
contentPane.setBorder(new EmptyBorder(6, 6, 6, 6));
makeMenuBar(frame);
contentPane.setLayout(new BorderLayout(6, 6));
imagePanel = new ImagePanel();
imagePanel.setBorder(new EtchedBorder());
contentPane.add(imagePanel, BorderLayout.CENTER);
filenameLabel = new JLabel();
contentPane.add(filenameLabel, BorderLayout.NORTH);
statusLabel = new JLabel(VERSION);
contentPane.add(statusLabel, BorderLayout.SOUTH);
JPanel toolbar = new JPanel();
toolbar.setLayout(new GridLayout(0, 1));
smallerButton = new JButton("Smaller");
smallerButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) { makeSmaller(); }
});
toolbar.add(smallerButton);
largerButton = new JButton("Larger");
largerButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) { makeLarger(); }
});
toolbar.add(largerButton);
textButton = new JButton("Add Text");
textButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) { makeText();}
});
toolbar.add(textButton);
cropButton = new JButton("Crop");
cropButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) { crop(); }
});
toolbar.add(cropButton);
rotateButton = new JButton("Rotate 180");
rotateButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) { Rotate180(); }
});
toolbar.add(rotateButton);
rotButton = new JButton("Rotate Counterclockwise");
rotButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) { Rotate90left(); }
});
toolbar.add(rotButton);
rotaButton = new JButton("Rotate Clockwise");
rotaButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) { Rotate90right(); }
});
toolbar.add(rotaButton);
JPanel flow = new JPanel();
flow.add(toolbar);
contentPane.add(flow, BorderLayout.WEST);
showFilename(null);
setButtonsEnabled(false);
frame.pack();
Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
frame.setLocation(d.width/2 - frame.getWidth()/2, d.height/2 - frame.getHeight()/2);
frame.setVisible(true);
}
private void Rotate180() {
if(currentImage != null) {
int width = currentImage.getWidth();
int height = currentImage.getHeight();
OFImage newImage = new OFImage(width, height);
for(int y = 0; y < height; y++) {
for(int x = 0; x < width; x++) {
Color col = currentImage.getPixel(width-x-1, height-y-1);
newImage.setPixel(x, y, col);
}
}
currentImage = newImage;
imagePanel.setImage(currentImage);
frame.pack();
}
}
private void Rotate90left() {
if(currentImage != null) {
int width = currentImage.getWidth();
int height = currentImage.getHeight();
OFImage newImage = new OFImage(height, width);
for(int y = 0; y < height; y++) {
for(int x = 0; x < width; x++) {
Color col = currentImage.getPixel(x, y);
newImage.setPixel(y, width-x-1, col);
}
}
currentImage = newImage;
imagePanel.setImage(currentImage);
frame.pack();
}
}
private void Rotate90right() {
if(currentImage != null) {
int width = currentImage.getWidth();
int height = currentImage.getHeight();
OFImage newImage = new OFImage(height, width);
for(int y = 0; y < height; y++) {
for(int x = 0; x < width; x++) {
Color col = currentImage.getPixel(x, y);
newImage.setPixel(height-y-1, x, col);
}
}
currentImage = newImage;
imagePanel.setImage(currentImage);
frame.pack();
}
}
private void makeMenuBar(JFrame frame)
{
final int SHORTCUT_MASK =
Toolkit.getDefaultToolkit().getMenuShortcutKeyMask();
JMenuBar menubar = new JMenuBar();
frame.setJMenuBar(menubar);
JMenu menu;
JMenuItem item;
menu = new JMenu("File");
menubar.add(menu);
item = new JMenuItem("Open...");
item.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_O, SHORTCUT_MASK));
item.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) { openFile(); }
});
menu.add(item);
item = new JMenuItem("Close");
item.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_W, SHORTCUT_MASK));
item.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) { close(); }
});
menu.add(item);
menu.addSeparator();
item = new JMenuItem("Save As...");
item.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S, SHORTCUT_MASK));
item.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) { saveAs(); }
});
menu.add(item);
menu.addSeparator();
item = new JMenuItem("Quit");
item.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_Q, SHORTCUT_MASK));
item.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) { quit(); }
});
menu.add(item);
menu = new JMenu("Filter");
menubar.add(menu);
for(final Filter filter : filters) {
item = new JMenuItem(filter.getName());
item.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
applyFilter(filter);
}
});
menu.add(item);
}
menu = new JMenu("Help");
menubar.add(menu);
item = new JMenuItem("About ImageEditor...");
item.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) { showAbout(); }
});
menu.add(item);
}
}
b. ImageFileManager: Untuk memuat dan menyimpan gambar
import java.awt.image.*;
import javax.imageio.*;
import java.io.*;
public class ImageFileManager
{
private static final String IMAGE_FORMAT = "jpg";
public static OFImage loadImage(File imageFile)
{
try {
BufferedImage image = ImageIO.read(imageFile);
if(image == null || (image.getWidth(null) < 0)) {
return null;
}
return new OFImage(image);
}
catch(IOException exc) {
return null;
}
}
public static void saveImage(OFImage image, File file)
{
try {
ImageIO.write(image, IMAGE_FORMAT, file);
}
catch(IOException exc) {
return;
}
}
}
c. ImagePanel: Komponen swing yang dapat menampilkan class OFImage
import java.awt.*;
import javax.swing.*;
import java.awt.image.*;
public class ImagePanel extends JComponent
{
private int width, height;
private OFImage panelImage;
public ImagePanel()
{
width = 360;
height = 240;
panelImage = null;
}
public void setImage(OFImage image)
{
if(image != null) {
width = image.getWidth();
height = image.getHeight();
panelImage = image;
repaint();
}
}
public void clearImage()
{
Graphics imageGraphics = panelImage.getGraphics();
imageGraphics.setColor(Color.LIGHT_GRAY);
imageGraphics.fillRect(0, 0, width, height);
repaint();
}
public Dimension getPreferredSize()
{
return new Dimension(width, height);
}
public void paintComponent(Graphics g)
{
Dimension size = getSize();
g.clearRect(0, 0, size.width, size.height);
if(panelImage != null) {
g.drawImage(panelImage, 0, 0, null);
}
}
}
d. OFImage: Kelas yang mendefinisikan gambar dalam format OF (Object First)
import java.awt.*;
import java.awt.image.*;
import javax.swing.*;
public class OFImage extends BufferedImage
{
public OFImage(BufferedImage image)
{
super(image.getColorModel(), image.copyData(null),
image.isAlphaPremultiplied(), null);
}
public OFImage(int width, int height)
{
super(width, height, TYPE_INT_RGB);
}
public void setPixel(int x, int y, Color col)
{
int pixel = col.getRGB();
setRGB(x, y, pixel);
}
public Color getPixel(int x, int y)
{
int pixel = getRGB(x, y);
return new Color(pixel);
}
}
e. Filter: Kelas Abstrak untuk menjalankan semua filter yang ada didalam program
public abstract class Filter
{
private String name;
public Filter(String name)
{
this.name = name;
}
public String getName()
{
return name;
}
public abstract void apply(OFImage image);
}
f. EdgeFilter: Membuat filter efek edge
import java.awt.Color;
import java.util.List;
import java.util.ArrayList;
public class EdgeFilter extends Filter
{
private static final int TOLERANCE = 20;
private OFImage original;
private int width;
private int height;
public EdgeFilter(String name)
{
super(name);
}
public void apply(OFImage image)
{
original = new OFImage(image);
width = original.getWidth();
height = original.getHeight();
for(int y = 0; y < height; y++) {
for(int x = 0; x < width; x++) {
image.setPixel(x, y, edge(x, y));
}
}
}
private Color edge(int xpos, int ypos)
{
List<Color> pixels = new ArrayList<Color>(9);
for(int y = ypos-1; y <= ypos+1; y++) {
for(int x = xpos-1; x <= xpos+1; x++) {
if( x >= 0 && x < width && y >= 0 && y < height ) {
pixels.add(original.getPixel(x, y));
}
}
}
return new Color(255 - diffRed(pixels), 255 - diffGreen(pixels), 255 - diffBlue(pixels));
}
private int diffRed(List<Color> pixels)
{
int max = 0;
int min = 255;
for(Color color : pixels) {
int val = color.getRed();
if(val > max) {
max = val;
}
if(val < min) {
min = val;
}
}
int difference = max - min - TOLERANCE;
if(difference < 0) {
difference = 0;
}
return difference;
}
private int diffGreen(List<Color> pixels)
{
int max = 0;
int min = 255;
for(Color color : pixels) {
int val = color.getGreen();
if(val > max) {
max = val;
}
if(val < min) {
min = val;
}
}
int difference = max - min - TOLERANCE;
if(difference < 0) {
difference = 0;
}
return difference;
}
private int diffBlue(List<Color> pixels)
{
int max = 0;
int min = 255;
for(Color color : pixels) {
int val = color.getBlue();
if(val > max) {
max = val;
}
if(val < min) {
min = val;
}
}
int difference = max - min - TOLERANCE;
if(difference < 0) {
difference = 0;
}
return difference;
}
}
g. FishEyeFilter: Membuat filter efek mata ikan (Hasil akan seperti di kamera GoPro)
import java.awt.Color;
public class FishEyeFilter extends Filter
{
private final static int SCALE = 20;
private final static double TWO_PI = 2 * Math.PI;
public FishEyeFilter(String name)
{
super(name);
}
public void apply(OFImage image)
{
int height = image.getHeight();
int width = image.getWidth();
OFImage original = new OFImage(image);
int[] xa = computeXArray(width);
int[] ya = computeYArray(height);
for(int y = 0; y < height; y++) {
for(int x = 0; x < width; x++) {
image.setPixel(x, y, original.getPixel(x + xa[x], y + ya[y]));
}
}
}
private int[] computeXArray(int width)
{
int[] xArray = new int[width];
for(int i=0; i < width; i++) {
xArray[i] = (int)(Math.sin( ((double)i / width) * TWO_PI) * SCALE);
}
return xArray;
}
private int[] computeYArray(int height)
{
int[] yArray = new int[height];
for(int i=0; i < height; i++) {
yArray[i] = (int)(Math.sin( ((double)i / height) * TWO_PI) * SCALE);
}
return yArray;
}
}
h. GrayScaleFilter: Membuat filter efek hitam putih
import java.awt.Color;
public class GrayScaleFilter extends Filter
{
public GrayScaleFilter(String name)
{
super(name);
}
public void apply(OFImage image)
{
int height = image.getHeight();
int width = image.getWidth();
for(int y = 0; y < height; y++) {
for(int x = 0; x < width; x++) {
Color pix = image.getPixel(x, y);
int avg = (pix.getRed() + pix.getGreen() + pix.getBlue()) / 3;
image.setPixel(x, y, new Color(avg, avg, avg));
}
}
}
}
i. PixelizeFilter: Membuat filter efek banyak pixel atau kotak2 (seperti gambar pecah)
import java.awt.Color;
public class PixelizeFilter extends Filter
{
public PixelizeFilter(String name)
{
super(name);
}
public void apply(OFImage image)
{
final int PIXEL_SIZE = 5;
int width = image.getWidth();
int height = image.getHeight();
for(int y = 0; y < height; y += PIXEL_SIZE) {
for(int x = 0; x < width; x += PIXEL_SIZE) {
Color pix = image.getPixel(x, y);
for(int dy = y; dy < y + PIXEL_SIZE; dy++) {
for(int dx = x; dx < x + PIXEL_SIZE; dx++) {
if( dx < width && dy < height )
image.setPixel(dx, dy, pix);
}
}
}
}
}
}
j. SolarizeFilter: Membuat filter efek Solarize
import java.awt.Color;
public class SolarizeFilter extends Filter
{
public SolarizeFilter(String name)
{
super(name);
}
public void apply(OFImage image)
{
int height = image.getHeight();
int width = image.getWidth();
for(int y = 0; y < height; y++) {
for(int x = 0; x < width; x++) {
Color pix = image.getPixel(x, y);
int red = pix.getRed();
if(red <= 127) {
red = 255 - red;
}
int green = pix.getGreen();
if(green <= 127) {
green = 255 - green;
}
int blue = pix.getBlue();
if(blue <= 127) {
blue = 255 - blue;
}
image.setPixel(x, y, new Color(red, green, blue));
}
}
}
}
k. MirrorFilter: Membuat filter efek mirror atau terbalik (Seperti kaca)
import java.awt.Color;
public class MirrorFilter extends Filter
{
public MirrorFilter(String name)
{
super(name);
}
public void apply(OFImage image)
{
int height = image.getHeight();
int width = image.getWidth();
for(int y = 0; y < height; y++) {
for(int x = 0; x < width / 2; x++) {
Color left = image.getPixel(x, y);
image.setPixel(x, y, image.getPixel(width - 1 - x, y));
image.setPixel(width - 1 - x, y, left);
}
}
}
}
l. SmoothFilter: Membuat filter efek smooth atau halus
import java.awt.Color;
import java.util.List;
import java.util.ArrayList;
public class SmoothFilter extends Filter
{
private OFImage original;
private int width;
private int height;
public SmoothFilter(String name)
{
super(name);
}
public void apply(OFImage image)
{
original = new OFImage(image);
width = original.getWidth();
height = original.getHeight();
for(int y = 0; y < height; y++) {
for(int x = 0; x < width; x++) {
image.setPixel(x, y, smooth(x, y));
}
}
}
private Color smooth(int xpos, int ypos)
{
List<Color> pixels = new ArrayList<Color>(9);
for(int y = ypos - 1; y <= ypos + 1; y++) {
for(int x = xpos - 1; x <= xpos + 1; x++) {
if( x >= 0 && x < width && y >= 0 && y < height )
pixels.add(original.getPixel(x, y));
}
}
return new Color(avgRed(pixels), avgGreen(pixels), avgBlue(pixels));
}
private int avgRed(List<Color> pixels)
{
int total = 0;
for(Color color : pixels) {
total += color.getRed();
}
return total / pixels.size();
}
private int avgGreen(List<Color> pixels)
{
int total = 0;
for(Color color : pixels) {
total += color.getGreen();
}
return total / pixels.size();
}
private int avgBlue(List<Color> pixels)
{
int total = 0;
for(Color color : pixels) {
total += color.getBlue();
}
return total / pixels.size();
}
}
m. InvertFilter: Membuat filter efek invert atau warna yang dibalik (atau negatif)
import java.awt.Color;
public class InvertFilter extends Filter
{
public InvertFilter(String name)
{
super(name);
}
public void apply(OFImage image)
{
int height = image.getHeight();
int width = image.getWidth();
for(int y = 0; y < height; y++) {
for(int x = 0; x < width; x++) {
Color pix = image.getPixel(x, y);
image.setPixel(x, y, new Color(255 - pix.getRed(),
255 - pix.getGreen(),
255 - pix.getBlue()));
}
}
}
}
n. ThresholdFilter: Membuat filter efek Threshold
import java.awt.Color;
public class ThresholdFilter extends Filter
{
public ThresholdFilter(String name)
{
super(name);
}
public void apply(OFImage image)
{
int height = image.getHeight();
int width = image.getWidth();
for(int y = 0; y < height; y++) {
for(int x = 0; x < width; x++) {
Color pixel = image.getPixel(x, y);
int brightness = (pixel.getRed() + pixel.getBlue() + pixel.getGreen()) / 3;
if(brightness <= 85) {
image.setPixel(x, y, Color.BLACK);
}
else if(brightness <= 170) {
image.setPixel(x, y, Color.GRAY);
}
else {
image.setPixel(x, y, Color.WHITE);
}
}
}
}
}
o. LighterFilter: Mencerahkan gambar
public class LighterFilter extends Filter
{
public LighterFilter(String name)
{
super(name);
}
public void apply(OFImage image)
{
int height = image.getHeight();
int width = image.getWidth();
for(int y = 0; y < height; y++) {
for(int x = 0; x < width; x++) {
image.setPixel(x, y, image.getPixel(x, y).brighter());
}
}
}
}
p. DarkerFilter: Menggelapkan gambar
public class DarkerFilter extends Filter
{
public DarkerFilter(String name)
{
super(name);
}
public void apply(OFImage image)
{
int height = image.getHeight();
int width = image.getWidth();
for(int y = 0; y < height; y++) {
for(int x = 0; x < width; x++) {
image.setPixel(x, y, image.getPixel(x, y).darker());
}
}
}
}
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