계속 진행할 문맥이 거의 없거나 전혀 없다는 사실을 감안할 때, 정확히 무엇이 잘못되었는지를 아는 것은 어렵습니다. 당신은/그것을 개방 만드는 경우 엄지 손가락의
일반 규칙하지만, 당신은
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class ColorMe {
public static void main(String[] args) {
new ColorMe();
}
public ColorMe() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
}
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new BorderLayout());
frame.add(new TestPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class TestPane extends JPanel {
private BufferedImage img;
public TestPane() {
try {
img = ImageIO.read(new File("/path/to/image..."));
addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
Point p = e.getPoint();
Rectangle bounds = getPictureBounds();
if (bounds.contains(p)) {
int x = p.x - bounds.x;
int y = p.y - bounds.y;
splat(img, x, y);
repaint();
}
}
});
} catch (IOException ex) {
ex.printStackTrace();
}
}
protected void splat(BufferedImage img, int x, int y) {
Graphics2D g2d = img.createGraphics();
g2d.setColor(Color.RED);
g2d.fillOval(x - 10, y - 10, 20, 20);
g2d.dispose();
}
protected Rectangle getPictureBounds() {
Rectangle bounds = new Rectangle();
if (img != null) {
bounds.x = (getWidth() - img.getWidth())/2;
bounds.y = (getHeight() - img.getHeight())/2;
bounds.width = img.getWidth();
bounds.height = img.getHeight();
}
return bounds;
}
@Override
public Dimension getPreferredSize() {
return img == null ? new Dimension(200, 200) : new Dimension(img.getWidth(), img.getHeight());
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
if (img != null) {
Graphics2D g2d = (Graphics2D) g.create();
Rectangle bounds = getPictureBounds();
g2d.drawImage(img, bounds.x, bounds.y, this);
g2d.dispose();
}
}
}
}
@camickr :이 메서드는 전달 된 원래 BufferedImage 개체를 변경합니까 아니면 무색의 BufferedImage를 반환합니까? –
원본 BufferedImage가 변경됩니다. – camickr