EAS PBO-B: Image Editor
Nama: Paramastri Ardiningrum
NRP: 05111740000019
Kelas: PBO-B
Dari aplikasi image viewer yang telah dibuat kembangkan menjadi aplikasi image editor. Tambahkan fitur-fitur yang berguna untuk mengedit gambar seperti Crop, menambahkan teks ke gambar, dll.
Soal
Rancangan Interface
Untuk merancang interface aplikasi photo editor-nya, saya menggunakan software Adobe XD CC. Hasilnya sebagai berikut:
Class Diagram
Kelas yang saya buat:
Class Filter
Class DarkerFilter
Class TresholdFilter
Class MirrorFilter
Class LighterFilter
Class FishEyeFilter
Class ImagePanel
Class ImageFileManager
Class OFImage
Run
Tampilkan gambar dari file dengan File > Open
Gambar tampil!
Mencoba filter dengan Filter > Filter pilihan. Misal kita coba Darker Filter.
Mencoba fitur crop dengan Crop > Crop Image
Masukkan koordinat (x,y) awal dan akhir
Foto terpotong!
Mencoba fitur add text dengan Text > Add Text
Masukkan posisi koordinat yang anda inginkan untuk mencantumkan teks
Masukkan ukuran font yang anda inginkan
Masukkan teks yang anda inginkan
Masukkan RGB (warna font)
Teks berhasil ditambahkan!
Mencoba fitur rotate dengan Rotate > Derajat yang diinginkan
Hasil rotate 180 derajat
Hasil rotate 90 derajat ke kiri
Hasil rotate 90 derajat ke kanan
Mencoba fitur zoom dengan Zoom > In / Out
Zoom in
Zoom out
Selesai! Terima kasih sudah membaca.
NRP: 05111740000019
Kelas: PBO-B
Dari aplikasi image viewer yang telah dibuat kembangkan menjadi aplikasi image editor. Tambahkan fitur-fitur yang berguna untuk mengedit gambar seperti Crop, menambahkan teks ke gambar, dll.
Soal
- 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.
Rancangan Interface
Untuk merancang interface aplikasi photo editor-nya, saya menggunakan software Adobe XD CC. Hasilnya sebagai berikut:
Class Diagram
Kelas yang saya buat:
- ImageViewer: ImageViewer adalah kelas utama aplikasi penampil gambar. Ini membangun dan menampilkan aplikasi GUI dan menginisialisasi semua komponen lainnya. Untuk memulai aplikasi, buat objek dari kelas ini.
- Filter (abstract class): Filter adalah superclass abstrak untuk semua filter gambar dalam aplikasi ini. Filter dapat diterapkan ke OFImages dengan menerapkan metode yang berlaku.
- DarkerFilter: Filter untuk membuat gambar sedikit lebih gelap.
- TresholdFilter: Filter ambang tiga tingkat berbasis abu-abu.
- MirrorFilter: Filter gambar untuk mencerminkan (membalik) gambar secara horizontal.
- LighterFilter: Filter gambar untuk membuat gambar sedikit lebih terang.
- FishEyeFilter: Filter gambar untuk menciptakan efek yang mirip dengan lensa kamera mata ikan (bekerja sangat baik pada potret manusia).
- ImagePanel: ImagePanel adalah komponen Swing yang dapat menampilkan OFImage. Ini dibangun sebagai subkelas JComponent dengan fungsi tambahan pengaturan OFImage yang akan ditampilkan pada permukaan komponen ini.
- ImageFileManager: ImageFileManager adalah kelas utilitas kecil dengan metode statis untuk memuat dan menyimpan gambar. File pada disk bisa dalam format gambar JPG atau PNG. Untuk file yang ditulis oleh kelas ini, format ditentukan oleh IMAGE_FORMAT konstan.
- OFImage: OFImage adalah kelas yang mendefinisikan gambar dalam format OF (Objects First).
/**
* Class ImageViewer
*
* @author (Paramastri A)
* @version (10/12/2018)
*/
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
{
// static fields:
private static final String VERSION = "Version 3.0";
private static JFileChooser fileChooser = new JFileChooser(System.getProperty("user.dir"));
// fields:
private JFrame frame;
private ImagePanel imagePanel;
private JLabel filenameLabel;
private JLabel statusLabel;
private OFImage currentImage;
private List<Filter> filters;
/**
* Create an ImageViewer and display its GUI on screen.
*/
public ImageViewer()
{
currentImage = null;
filters = createFilters();
makeFrame();
}
// ---- implementation of menu functions ----
/**
* Open function: open a file chooser to select a new image file,
* and then display the chosen image.
*/
private void openFile()
{
int returnVal = fileChooser.showOpenDialog(frame);
if(returnVal != JFileChooser.APPROVE_OPTION) {
return; // cancelled
}
File selectedFile = fileChooser.getSelectedFile();
currentImage = ImageFileManager.loadImage(selectedFile);
if(currentImage == null) { // image file was not a valid image
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();
}
/**
* Close function: close the current image.
*/
private void close()
{
currentImage = null;
imagePanel.clearImage();
showFilename(null);
setButtonsEnabled(false);
}
/**
* Save As function: save the current image to a file.
*/
private void saveAs()
{
if(currentImage != null) {
int returnVal = fileChooser.showSaveDialog(frame);
if(returnVal != JFileChooser.APPROVE_OPTION) {
return; // cancelled
}
File selectedFile = fileChooser.getSelectedFile();
ImageFileManager.saveImage(currentImage, selectedFile);
showFilename(selectedFile.getPath());
}
}
/**
* Quit function: quit the application.
*/
private void quit()
{
System.exit(0);
}
/**
* Apply a given filter to the current image.
*
* @param filter The filter object to be applied.
*/
private void applyFilter(Filter filter)
{
if(currentImage != null) {
filter.apply(currentImage);
frame.repaint();
showStatus("Applied: " + filter.getName());
}
else {
showStatus("No image loaded.");
}
}
/**
* 'About' function: show the 'about' box.
*/
private void showAbout()
{
JOptionPane.showMessageDialog(frame,
"ImageViewer\n" + VERSION,
"About ImageViewer",
JOptionPane.INFORMATION_MESSAGE);
}
/**
* Make the current picture larger.
*/
private void makeLarger()
{
if(currentImage != null) {
// create new image with double size
int width = currentImage.getWidth();
int height = currentImage.getHeight();
OFImage newImage = new OFImage(width * 2, height * 2);
// copy pixel data into new image
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();
}
}
/**
* Make the current picture smaller.
*/
private void makeSmaller()
{
if(currentImage != null) {
// create new image with double size
int width = currentImage.getWidth() / 2;
int height = currentImage.getHeight() / 2;
OFImage newImage = new OFImage(width, height);
// copy pixel data into new image
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 makeCrop()
{
if (currentImage != null)
{
int width = currentImage.getWidth();
int height = currentImage.getWidth();
int xAwal = Integer.parseInt(JOptionPane.showInputDialog("xAwal"));
int yAwal = Integer.parseInt(JOptionPane.showInputDialog("yAwal"));
int xAkhir = Integer.parseInt(JOptionPane.showInputDialog("xAkhir"));
int yAkhir = Integer.parseInt(JOptionPane.showInputDialog("yAkhir"));
OFImage newImage = new OFImage(xAkhir - xAwal, yAkhir - yAwal);
for (int y = 0; y < yAkhir - yAwal; y++)
{
for (int x = 0; x < xAkhir - xAwal; x++)
{
newImage.setPixel(x, y, currentImage.getPixel(x + xAwal, y + yAwal));
}
}
currentImage = newImage;
imagePanel.setImage(currentImage);
frame.pack();
}
}
private void makeText()
{
JTextField xField = new JTextField(5);
JTextField yField = new JTextField(5);
JTextField zField = new JTextField(5);
JPanel myPanel = new JPanel();
myPanel.add(new JLabel("R"));
myPanel.add(xField);
myPanel.add(Box.createVerticalStrut(15)); // a spacer
myPanel.add(new JLabel("G"));
myPanel.add(yField);
myPanel.add(Box.createVerticalStrut(15)); // a spacer
myPanel.add(new JLabel("B"));
myPanel.add(zField);
if(currentImage != null) {
int width = currentImage.getWidth();
int height = currentImage.getHeight();
int xPosition = Integer.parseInt(JOptionPane.showInputDialog("Posisi X"));
int yPosition = Integer.parseInt(JOptionPane.showInputDialog("Posisi Y"));
float fontSize = Float.parseFloat(JOptionPane.showInputDialog("Ukuran font"));
String addText = JOptionPane.showInputDialog("Tuliskan sesuatu...");
int result = JOptionPane.showConfirmDialog(null, myPanel, "Warna font", JOptionPane.OK_CANCEL_OPTION);
OFImage newImage = new OFImage(width, height);
// copy pixel data into new image
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);
}
}
int r = Integer.parseInt(xField.getText());
int gr = Integer.parseInt(yField.getText());
int b = Integer.parseInt(zField.getText());
Color c = new Color(r,gr,b);
Graphics g = newImage.getGraphics();
g.setFont(g.getFont().deriveFont(fontSize));
g.setColor(c);
g.drawString(addText, xPosition, yPosition);
g.dispose();
currentImage = newImage;
imagePanel.setImage(currentImage);
}
}
private void Rotate180() {
if(currentImage != null) {
// create new image with double size
int width = currentImage.getWidth();
int height = currentImage.getHeight();
OFImage newImage = new OFImage(width, height);
//copy pixel data into new image
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) {
// create new image with double size
int width = currentImage.getWidth();
int height = currentImage.getHeight();
OFImage newImage = new OFImage(height, width);
//copy pixel data into new image
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) {
// create new image with double size
int width = currentImage.getWidth();
int height = currentImage.getHeight();
OFImage newImage = new OFImage(height, width);
//copy pixel data into new image
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();
}
}
// ---- support methods ----
/**
* Show the file name of the current image in the fils display label.
* 'null' may be used as a parameter if no file is currently loaded.
*
* @param filename The file name to be displayed, or null for 'no file'.
*/
private void showFilename(String filename)
{
if(filename == null) {
filenameLabel.setText("No file displayed.");
}
else {
filenameLabel.setText("File: " + filename);
}
}
/**
* Show a message in the status bar at the bottom of the screen.
* @param text The message to be displayed.
*/
private void showStatus(String text)
{
statusLabel.setText(text);
}
/**
* Enable or disable all toolbar buttons.
*
* @param status 'true' to enable the buttons, 'false' to disable.
*/
private void setButtonsEnabled(boolean status)
{
}
/**
* Create a list with all the known filters.
* @return The list of filters.
*/
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 FishEyeFilter("Fish Eye"));
filterList.add(new MirrorFilter("Mirror"));
return filterList;
}
// ---- swing stuff to build the frame and all its components ----
/**
* Create the Swing frame and its content.
*/
private void makeFrame()
{
frame = new JFrame("ImageViewer");
JPanel contentPane = (JPanel)frame.getContentPane();
contentPane.setBorder(new EmptyBorder(6, 6, 6, 6));
makeMenuBar(frame);
// Specify the layout manager with nice spacing
contentPane.setLayout(new BorderLayout(6, 6));
// Create the image pane in the center
imagePanel = new ImagePanel();
imagePanel.setBorder(new EtchedBorder());
contentPane.add(imagePanel, BorderLayout.CENTER);
// Create two labels at top and bottom for the file name and status message
filenameLabel = new JLabel();
contentPane.add(filenameLabel, BorderLayout.NORTH);
statusLabel = new JLabel(VERSION);
contentPane.add(statusLabel, BorderLayout.SOUTH);
// Create the toolbar with the buttons
JPanel toolbar = new JPanel();
toolbar.setLayout(new GridLayout(0, 1));
// Add toolbar into panel with flow layout for spacing
JPanel flow = new JPanel();
flow.add(toolbar);
contentPane.add(flow, BorderLayout.WEST);
// building is done - arrange the components
showFilename(null);
setButtonsEnabled(false);
frame.pack();
// place the frame at the center of the screen and show
Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
frame.setLocation(d.width/2 - frame.getWidth()/2, d.height/2 - frame.getHeight()/2);
frame.setVisible(true);
}
/**
* Create the main frame's menu bar.
*
* @param frame The frame that the menu bar should be added to.
*/
private void makeMenuBar(JFrame frame)
{
final int SHORTCUT_MASK =
Toolkit.getDefaultToolkit().getMenuShortcutKeyMask();
JMenuBar menubar = new JMenuBar();
frame.setJMenuBar(menubar);
JMenu menu;
JMenuItem item;
// create the File menu
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);
// create the Filter menu
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("Crop");
menubar.add(menu);
item = new JMenuItem("Crop Image");
item.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e) { makeCrop(); }
});
menu.add(item);
menu = new JMenu("Text");
menubar.add(menu);
item = new JMenuItem("Add Text");
item.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e) { makeText(); }
});
menu.add(item);
menu = new JMenu("Rotate");
menubar.add(menu);
item = new JMenuItem("Rotate 180");
item.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) { Rotate180(); }
});
menu.add(item);
item = new JMenuItem("Rotate 90 Left");
item.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) { Rotate90left(); }
});
menu.add(item);
item = new JMenuItem("Rotate 90 Right");
item.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) { Rotate90right(); }
});
menu.add(item);
menu = new JMenu("Zoom");
menubar.add(menu);
item = new JMenuItem("Zoom in");
item.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) { makeLarger();}
});
menu.add(item);
item = new JMenuItem("Zoom out");
item.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) { makeSmaller();}
});
menu.add(item);
// create the Help menu
menu = new JMenu("Help");
menubar.add(menu);
item = new JMenuItem("About ImageViewer...");
item.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) { showAbout(); }
});
menu.add(item);
}
}
Class Filter
/**
* Class Filter
*
* @author (Paramastri A)
* @version (10/12/2018)
*/
public abstract class Filter
{
private String name;
/**
* Create a new filter with a given name.
* @param name The name of the filter.
*/
public Filter(String name)
{
this.name = name;
}
/**
* Return the name of this filter.
*
* @return The name of this filter.
*/
public String getName()
{
return name;
}
/**
* Apply this filter to an image.
*
* @param image The image to be changed by this filter.
*/
public abstract void apply(OFImage image);
}
Class DarkerFilter
/**
* Class DarkerFilter
*
* @author (Paramastri A)
* @version (10/12/2018)
*/
public class DarkerFilter extends Filter
{
/**
* Constructor for objects of class DarkerFilter.
* @param name The name of the filter.
*/
public DarkerFilter(String name)
{
super(name);
}
/**
* Apply this filter to an image.
*
* @param image The image to be changed by this filter.
*/
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());
}
}
}
}
Class TresholdFilter
/**
* Class Treshold Filter
*
* @author (Paramastri A)
* @version (10/12/2018)
*/
import java.awt.Color;
/**
* An three-level gray-based threshold filter.
*
* @author Michael Kolling and David J Barnes
* @version 1.0
*/
public class ThresholdFilter extends Filter
{
/**
* Constructor for objects of class ThresholdFilter.
* @param name The name of the filter.
*/
public ThresholdFilter(String name)
{
super(name);
}
/**
* Apply this filter to an image.
*
* @param image The image to be changed by this filter.
*/
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);
}
}
}
}
}
Class MirrorFilter
/**
* Class MirrorFilter
*
* @author (Paramastri A)
* @version (10/12/2018)
*/
import java.awt.Color;
public class MirrorFilter extends Filter
{
/**
* Constructor for objects of class MirrorFilter.
* @param name The name of the filter.
*/
public MirrorFilter(String name)
{
super(name);
}
/**
* Apply this filter to an image.
*
* @param image The image to be changed by this filter.
*/
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);
}
}
}
}
Class LighterFilter
/**
* Class LighterFilter
*
* @author (Paramastri A)
* @version (10/12/2018)
*/
public class LighterFilter extends Filter
{
/**
* Constructor for objects of class LighterFilter.
* @param name The name of the filter.
*/
public LighterFilter(String name)
{
super(name);
}
/**
* Apply this filter to an image.
*
* @param image The image to be changed by this filter.
*/
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());
}
}
}
}
Class FishEyeFilter
/**
* Class FishEyeFilter
*
* @author (Paramastri A)
* @version (10/12/2018)
*/
import java.awt.Color;
public class FishEyeFilter extends Filter
{
// constants:
private final static int SCALE = 20; // this defines the strenght of the filter
private final static double TWO_PI = 2 * Math.PI;
/**
* Constructor for objects of class LensFilter.
* @param name The name of the filter.
*/
public FishEyeFilter(String name)
{
super(name);
}
/**
* Apply this filter to an image.
*
* @param image The image to be changed by this filter.
*/
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]));
}
}
}
/**
* Compute and return an array of horizontal offsets for each pixel column.
* These can then be applied as the horizontal offset for each pixel.
*/
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;
}
/**
* Compute and return an array of vertical offsets for each pixel row.
* These can then be applied as the vertical offset for each pixel.
*/
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;
}
}
Class ImagePanel
/**
* Class ImagePanel
*
* @author (Paramastri A)
* @version (10/12/2018)
*/
import java.awt.*;
import javax.swing.*;
import java.awt.image.*;
public class ImagePanel extends JComponent
{
// The current width and height of this panel
private int width, height;
// An internal image buffer that is used for painting. For
// actual display, this image buffer is then copied to screen.
private OFImage panelImage;
/**
* Create a new, empty ImagePanel.
*/
public ImagePanel()
{
width = 360; // arbitrary size for empty panel
height = 240;
panelImage = null;
}
/**
* Set the image that this panel should show.
*
* @param image The image to be displayed.
*/
public void setImage(OFImage image)
{
if(image != null) {
width = image.getWidth();
height = image.getHeight();
panelImage = image;
repaint();
}
}
/**
* Clear the image on this panel.
*/
public void clearImage()
{
Graphics imageGraphics = panelImage.getGraphics();
imageGraphics.setColor(Color.LIGHT_GRAY);
imageGraphics.fillRect(0, 0, width, height);
repaint();
}
// The following methods are redefinitions of methods
// inherited from superclasses.
/**
* Tell the layout manager how big we would like to be.
* (This method gets called by layout managers for placing
* the components.)
*
* @return The preferred dimension for this component.
*/
public Dimension getPreferredSize()
{
return new Dimension(width, height);
}
/**
* This component needs to be redisplayed. Copy the internal image
* to screen. (This method gets called by the Swing screen painter
* every time it want this component displayed.)
*
* @param g The graphics context that can be used to draw on this component.
*/
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);
}
}
}
Class ImageFileManager
/**
* Class ImageFileManager
*
* @author (Paramastri A)
* @version (10/12/2018)
*/
import java.awt.image.*;
import javax.imageio.*;
import java.io.*;
public class ImageFileManager
{
// A constant for the image format that this writer uses for writing.
// Available formats are "jpg" and "png".
private static final String IMAGE_FORMAT = "jpg";
/**
* Read an image file from disk and return it as an image. This method
* can read JPG and PNG file formats. In case of any problem (e.g the file
* does not exist, is in an undecodable format, or any other read error)
* this method returns null.
*
* @param imageFile The image file to be loaded.
* @return The image object or null is it could not be read.
*/
public static OFImage loadImage(File imageFile)
{
try {
BufferedImage image = ImageIO.read(imageFile);
if(image == null || (image.getWidth(null) < 0)) {
// we could not load the image - probably invalid file format
return null;
}
return new OFImage(image);
}
catch(IOException exc) {
return null;
}
}
/**
* Write an image file to disk. The file format is JPG. In case of any
* problem the method just silently returns.
*
* @param image The image to be saved.
* @param file The file to save to.
*/
public static void saveImage(OFImage image, File file)
{
try {
ImageIO.write(image, IMAGE_FORMAT, file);
}
catch(IOException exc) {
return;
}
}
}
Class OFImage
/**
* Class OFImage
*
* @author (Paramastri A)
* @version (10/12/2018)
*/
import java.awt.*;
import java.awt.image.*;
import javax.swing.*;
/**
* OFImage is a class that defines an image in OF (Objects First) format.
*
* @author Michael Kolling and David J. Barnes
* @version 2.0
*/
public class OFImage extends BufferedImage
{
/**
* Create an OFImage copied from a BufferedImage.
* @param image The image to copy.
*/
public OFImage(BufferedImage image)
{
super(image.getColorModel(), image.copyData(null),
image.isAlphaPremultiplied(), null);
}
/**
* Create an OFImage with specified size and unspecified content.
* @param width The width of the image.
* @param height The height of the image.
*/
public OFImage(int width, int height)
{
super(width, height, TYPE_INT_RGB);
}
/**
* Set a given pixel of this image to a specified color. The
* color is represented as an (r,g,b) value.
* @param x The x position of the pixel.
* @param y The y position of the pixel.
* @param col The color of the pixel.
*/
public void setPixel(int x, int y, Color col)
{
int pixel = col.getRGB();
setRGB(x, y, pixel);
}
/**
* Get the color value at a specified pixel position.
* @param x The x position of the pixel.
* @param y The y position of the pixel.
* @return The color of the pixel at the given position.
*/
public Color getPixel(int x, int y)
{
int pixel = getRGB(x, y);
return new Color(pixel);
}
}
Run
Tampilkan gambar dari file dengan File > Open
Gambar tampil!
Mencoba filter dengan Filter > Filter pilihan. Misal kita coba Darker Filter.
Mencoba fitur crop dengan Crop > Crop Image
Masukkan koordinat (x,y) awal dan akhir
Foto terpotong!
Mencoba fitur add text dengan Text > Add Text
Masukkan posisi koordinat yang anda inginkan untuk mencantumkan teks
Masukkan ukuran font yang anda inginkan
Masukkan teks yang anda inginkan
Masukkan RGB (warna font)
Teks berhasil ditambahkan!
Mencoba fitur rotate dengan Rotate > Derajat yang diinginkan
Hasil rotate 180 derajat
Hasil rotate 90 derajat ke kiri
Hasil rotate 90 derajat ke kanan
Mencoba fitur zoom dengan Zoom > In / Out
Zoom in
Zoom out
Selesai! Terima kasih sudah membaca.
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