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如何使BMP填充JPanel?如何使BMP填充JPanel
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
public class BMPPanel extends JPanel {
String sciezka;
Image image;
int skala;
int rozdzielczosc;
Dimension d;
public static int NORMALNA = 0, MALA = 1;
public BMPPanel(String sciezka, int skala, int rozdzielczosc) {
this.sciezka = sciezka;
this.skala = skala;
this.rozdzielczosc = rozdzielczosc;
super.setMaximumSize(d);
this.d = new Dimension(400,400);
this.go();
}
public BMPPanel(String sciezka, int skala) {
this(sciezka,skala,200);
}
public void go() {
try {
File input = new File(sciezka);
image = ImageIO.read(input);
} catch (IOException e) {
e.printStackTrace();
}
setPreferredSize(new Dimension(image.getWidth(null),
image.getHeight(null)));
}
@Override
public void paintComponent(Graphics g) {
super.paintComponents(g);
Graphics2D g2d = (Graphics2D) g;
g2d.drawImage(image, 0, 0, this);
}
@Override
public void setMaximumSize(Dimension d){
}
}
希望這篇【答案】(http://stackoverflow.com/a/11372350/1057230)可能可以幫助您在這個方向: - ) – 2012-08-18 18:16:31