So, I have a JFrame with a menu, a toolbar and panel. I load images inside the panel but for some strange reason (to me at least) they are not correctly displayed in the panel. Sometimes they start under the toolbar, sometimes above. Furthermore the image is cut on bottom. The code is a cleaned example from the full one that can be compiled and tested. Thanks in advance.
Class of containing frame:
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.FileDialog;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.zip.ZipInputStream;
import javax.imageio.ImageIO;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JToolBar;
import javax.swing.border.BevelBorder;
import javax.swing.border.Border;
public class SSCE extends JFrame {
private JComicPanel panel;
private JToolBar toolbar;
private JButton buttonZoom;
private JButton buttonPrev;
private JButton buttonNext;
private JMenuBar menuBar;
private Dimension dim;
private BufferedImage img;
private int currentPage;
private JFrame parentFrame;
public SSCE(){
super("JComic");
BorderLayout layout = new BorderLayout();
setLayout(layout);
dim = Toolkit.getDefaultToolkit().getScreenSize();
setSize((int)(dim.width /2.5),dim.height);
this.setPreferredSize(new Dimension((int) (dim.width /2.5),dim.height));
createToolbar();
createPanel();
add(toolbar,BorderLayout.NORTH);
add(panel,BorderLayout.CENTER);
createMenu();
add(menuBar);
setJMenuBar(menuBar);
panel.setVisible(true);
img = null;
pack();
parentFrame = this;
}
private void createPanel(){
Border raisedbevel, loweredbevel;
raisedbevel = BorderFactory.createRaisedBevelBorder();
loweredbevel = BorderFactory.createLoweredBevelBorder();
panel = new JComicPanel(img);
panel.setBorder(BorderFactory.createCompoundBorder(raisedbevel,loweredbevel));
}
private void createToolbar(){
toolbar = new JToolBar();
toolbar.setPreferredSize(new Dimension(dim.width,45));
toolbar.setFloatable(false);
buttonZoom = new JButton("+");
toolbar.add(buttonZoom);
buttonPrev = new JButton("<-");
toolbar.add(buttonPrev);
buttonNext = new JButton("->");
toolbar.add(buttonNext);
toolbar.setBackground(Color.RED);
}
private void createMenu(){
JMenu menuFile,menuJComic;
JMenuItem fileOpen;
JMenuItem quitJComic,aboutJComic;
menuBar = new JMenuBar();
menuJComic = new JMenu("JComic");
aboutJComic = new JMenuItem("About JComic...");
menuJComic.add(aboutJComic);
quitJComic = new JMenuItem("Quit");
quitJComic.addActionListener(
new ActionListener(){
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
}
);
menuJComic.add(quitJComic);
menuBar.add(menuJComic);
menuFile = new JMenu("File");
fileOpen = new JMenuItem("Open...");
fileOpen.addActionListener(
new ActionListener(){
public void actionPerformed(ActionEvent e) {
try {
img = ImageIO.read(new File("superman.jpg"));
currentPage = 1;
int offset = menuBar.getHeight() + toolbar.getHeight();
panel.setImage(img,parentFrame,offset);
}
catch (IOException e1) {
System.out.println(e1.getMessage());
}
}
}
);
menuFile.add(fileOpen);
menuBar.add(menuFile);
}
/**
* @param args
*/
@SuppressWarnings("deprecation")
public static void main(String[] args) {
// TODO Auto-generated method stub
SSCE f = new SSCE();
f.show();
}
}
Class of panel
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.RenderingHints;
import java.awt.event.ComponentAdapter;
import java.awt.event.ComponentEvent;
import java.awt.image.BufferedImage;
import java.io.File;
import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class JComicPanel extends JPanel{
private BufferedImage img;
private int offset;
private final float scaling = 0.5f;
public JComicPanel(BufferedImage img){
super();
this.img = img;
addComponentListener(new ComponentAdapter() {
@Override
public void componentResized(ComponentEvent e)
{
repaint();
}
});
}
public void setImage(BufferedImage img,JFrame parentFrame,int offset){
try{
int w = img.getWidth();
int h = img.getHeight();
int newW = (int)(w * scaling);
int newH = (int)(h * scaling);
BufferedImage dimg = new BufferedImage(newW, newH, img.getType());
Graphics2D g = dimg.createGraphics();
g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g.drawImage(img, 0, 0, newW, newH, 0, 0, w, h, null);
this.img = img;
System.out.printf("dim %d x %d",newW,newH);
this.setSize(new Dimension(newW,newH+offset));
parentFrame.pack();
}
catch(Exception e){
}
}
public Dimension getPreferredSize(){
return new Dimension(img.getWidth(),img.getHeight());
}
public void paintComponent(Graphics g){
// Draw our Image object.
super.paintComponent(g);
g.drawImage(img,0,0,getSize().width,getSize().height, this); // at location 50,10
System.out.println("painting 2");
}
}
Image superman.jpg can be found here http://i50.tinypic.com/2yxnc3n.jpg. As you can see the image is below the toolbar, but in my full code it goes also above.
