import java.io.*;
import java.util.Iterator;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.BufferedImage;
import java.awt.image.BufferedImageOp;
import java.awt.Graphics;
import javax.imageio.IIOImage;
import javax.imageio.ImageIO;
import javax.imageio.ImageReadParam;
import javax.imageio.ImageReader;
import javax.imageio.stream.ImageInputStream;
import javax.imageio.stream.ImageOutputStream;
import javax.swing.*;
import java.net.*;
public class Test extends JApplet {
Grafik myGrafik;
public void init () {
setSize(890, 490);
myGrafik = new Grafik(this.getContentPane());
myGrafik.startGrafik();
}
}
class Grafik extends JFrame {
Container mycontainer = new Container();
BilderBuffern album = new BilderBuffern();
myLayer myframeinhalt = new myLayer();
public Grafik(Container appletcontentpane) {
mycontainer = appletcontentpane;
}
public void startGrafik() {
mycontainer.add(myframeinhalt);
}
class myLayer extends JLayeredPane {
GridBagLayout mylayout = new GridBagLayout();
GridBagConstraints mycons = new GridBagConstraints();
Ordner myOrdner;
JMenuBar mybar = new JMenuBar();
JMenu mymenu = new JMenu("Menue");
JMenuItem mymenuitem = new JMenuItem("Ueber...");
JPanel oben = new JPanel(); //fuer Bildvorschau
JPanel wahl = new JPanel(); //ComboBox fuer Ordnerwahl
JComboBox wahlbox = new JComboBox();
JList mitte = new JList(); //fuer Bildliste
JScrollPane mittescroll = new JScrollPane(mitte); //zum Scrollen der JList
JButton unten = new JButton(); //vor-/zurueck-Buttons
JPanel flaeche = new JPanel(); //Bildflaeche
int helfer = 9999999; //Kruecke/Helfer-Variable, damit mouseover nicht unnoetig oft aufgerufen wird
public myLayer() {
this.setLayout(new GridBagLayout());
myOrdner = new Ordner(); //Liste der verfuegbaren Bilder holen
basisFlaeche();
}
public void basisFlaeche() {
mymenuitem.addMouseListener(new menuListener());
mymenu.add(mymenuitem);
mybar.add(mymenu);
wahlbox = new JComboBox(myOrdner.getOrdnerListe());
wahlbox.addItemListener(new mausWahl());
mitte.addMouseMotionListener(new mausEreignisse());
mitte.addMouseListener(new mausEreignisse2());
mitte.setListData(myOrdner.getDateiListe(0));
mittescroll.setPreferredSize(new Dimension(30, 250));
oben.setBackground(Color.YELLOW);
wahl.setBackground(Color.CYAN);
mitte.setBackground(Color.GREEN);
unten.setBackground(Color.BLUE);
flaeche.setBackground(Color.RED);
gridbagHelfer(0, 0, 1, 1, 0.1, 0.01, 0, mybar, 1);
gridbagHelfer(0, 1, 1, 1, 0.1, 0.5, 0, oben, 1);
gridbagHelfer(0, 2, 1, 1, 0.1, 0.01, 0, wahl, 1);
gridbagHelfer(0, 3, 1, 1, 0.1, 0.39, 0, mittescroll, 1);
gridbagHelfer(0, 4, 1, 1, 0.1, 0.1, 0, unten, 1);
gridbagHelfer(1, 0, 1, 5, 0.9, 1, 0, flaeche, 1);
wahl.add(wahlbox);
}
BorderLayout myborder = new BorderLayout(10, 10);
myPopupJPanel testflaeche = new myPopupJPanel();
JButton popupbutton = new JButton("Schliessen");
public void popUp() {
testflaeche.setOpaque(false);
testflaeche.setLayout(myborder);
gridbagHelfer(0, 0, 2, 5, 1, 1, 20, testflaeche, 400);
this.setLayer(testflaeche, new Integer(400));
testflaeche.add(popupbutton, BorderLayout.SOUTH);
this.validate();
}
//Hilfsmethode fuer GridBagLayout
private void gridbagHelfer(int _gridx, int _gridy, int _gridwidth, int _gridheight, double _weightx, double _weighty, int _insets, JComponent komponente, int layerwert) {
mycons.gridx = _gridx; //welche Stelle beginnt Zelle (x-Achse)
mycons.gridy = _gridy; //welche Stelle beginnt Zelle (y-Achse)
mycons.gridwidth = _gridwidth; //ueber wieviel Felder ragt die Zelle (x-Achse)
mycons.gridheight = _gridheight; //ueber wieviel Felder ragt die Zelle (y-Achse)
mycons.weightx = _weightx; //die Gewichtung relativ zu den anderen Zellen (x-Achse)
mycons.weighty = _weighty; //die Gewichtung relativ zu den anderen Zellen (y-Achse)
mycons.insets = new Insets(_insets, _insets, _insets, _insets);
mycons.fill = GridBagConstraints.BOTH; //der restliche Platz wird mit Komponente gefuellt
this.addImpl(komponente, mycons, layerwert); //addImpl notwendig wegen Constraints
this.setLayer(komponente, new Integer(layerwert));
}
//Extra-Klasse fuer JPanel wegen paintComponent
public class myJPanel extends JPanel {
private static final long serialVersionUID = 3539041744270282816L;
BufferedImage puffbild;
BufferedImageOp myop;
public myJPanel(BufferedImage bufferimage) {
puffbild = bufferimage;
this.setBounds(0, 0, puffbild.getWidth(),puffbild.getHeight()); //loeschen
}
public void paintComponent (Graphics g) {
super.paintComponent(g);
Graphics2D g2d = (Graphics2D) g;
g2d.setClip(0 ,0, puffbild.getWidth(), puffbild.getHeight());
g2d.drawImage(puffbild, null, 0, 0);
}
}
//Extra-Klasse (halbtransparent) fuer Popup-JPanel wegen paintComponent
public class myPopupJPanel extends JPanel {
private static final long serialVersionUID = 8782249918175277703L;
public myPopupJPanel() {
}
public void paintComponent (Graphics g) {
super.paintComponent(g);
Graphics2D g2d = (Graphics2D) g;
g2d.setColor(new Color(3, 65, 27, 210));
g2d.fill3DRect(0, 0, 850, 450, true);
}
}
//fuer Ordnerauswahl-Box
private class mausWahl implements ItemListener {
public void itemStateChanged (ItemEvent event) {
mitte.setListData(myOrdner.getDateiListe(wahlbox.getSelectedIndex()));
}
}
//fuer Menue
private class menuListener extends MouseAdapter {
public void mousePressed(MouseEvent event) {
myframeinhalt.popUp();
}
}
myJPanel bildpanel;
//fuer Rollover
private class mausEreignisse extends MouseMotionAdapter {
int drueberindex;
public void mouseMoved (MouseEvent event) {
drueberindex = mitte.locationToIndex(event.getPoint());
if (helfer != drueberindex) {
mitte.setSelectedIndex(drueberindex);
mitte.setSelectionBackground(Color.WHITE);
helfer = drueberindex;
System.out.println(drueberindex);
album.thumbnailLaden(myOrdner.getgewaehltesBild(wahlbox.getSelectedIndex(), mitte.locationToIndex(event.getPoint())));
oben.removeAll();
oben.repaint();
bildpanel = new myJPanel(album.getmyThumb());
// bildpanel.setPreferredSize(new Dimension(album.getmyThumb().getWidth(), album.getmyThumb().getHeight()));
oben.setAlignmentX(Component.LEFT_ALIGNMENT);
oben.setAlignmentY(Component.CENTER_ALIGNMENT);
oben.add(bildpanel);
oben.validate();
}
}
}
//fuer Klick
private class mausEreignisse2 extends MouseAdapter {
public void mouseClicked(MouseEvent event) {
album.bilderLaden(myOrdner.getgewaehltesBild(wahlbox.getSelectedIndex(), mitte.locationToIndex(event.getPoint())));
flaeche.removeAll();
flaeche.setAlignmentX(0.3f);
flaeche.setAlignmentY(0.3f);
flaeche.repaint();
myJPanel nu = new myJPanel(album.getmyBuffer());
// nu.setPreferredSize(new Dimension(album.getmyBuffer().getWidth(), album.getmyBuffer().getHeight()));
nu.setAlignmentX(Component.LEFT_ALIGNMENT);
nu.setAlignmentY(Component.CENTER_ALIGNMENT);
flaeche.add(nu);
flaeche.validate();
}
}
}
}
class Ordner {
//Fuer Ordner
File ordnerinhalt;
String[] ordnerliste;
//Fuer Bilddateien
String pfad = "/home/michlmann/Test/";
File pfadinhalt;
//fuer JList Liste ersetellen
String[] bildliste;
//zum Aufruf der Bilddaten
String hilfsvar;
String[] bildpfad;
public Ordner() {
ordnerinhalt = new File(pfad);
}
public String[] getOrdnerListe() {
ordnerliste = ordnerinhalt.list();
return ordnerliste;
}
public String[] getDateiListe(int gewaehlterordner){
pfadinhalt = new File(pfad + ordnerliste[gewaehlterordner]);
bildliste = pfadinhalt.list();
for (int i=0; i < bildliste.length; i++) {
//.jpg abschneiden
bildliste[i] = bildliste[i].substring(0, bildliste[i].length()-4);
}
return bildliste;
}
//gibt ausgewaehlte Datei (Text + jpg) + Pfad zurueck
public String getgewaehltesBild(int ordnerlistwert, int bildlistwert) {
String rueck = pfad + ordnerliste[ordnerlistwert] + "/" + bildliste[bildlistwert] + ".jpg";
return rueck;
}
}
class BilderBuffern {
URI myuri;
Iterator readeriterator;
ImageReader myreader;
ImageInputStream myinstream;
BufferedImage mybuffer;
Graphics mygraphics;
IIOImage myio;
ImageOutputStream myoutstream;
BufferedImage mythumbnail;
public BilderBuffern() {
readeriterator = ImageIO.getImageReadersBySuffix("jpg");
myreader = (ImageReader)readeriterator.next();
}
public void bilderLaden(String gewaehltesbild) {
try {
myinstream = ImageIO.createImageInputStream(new File(gewaehltesbild));
myreader.setInput(myinstream, false);
mybuffer = myreader.read(0);
} catch (IOException e) {
System.err.println("Ein-/Ausgabeproblem.");
} catch (IllegalArgumentException e) {
System.err.println("Streamproblem.");
}
}
//alle Thumbnails laden
public void thumbnailLaden(String gewaehltesbild) {
try {
ImageReadParam myparam = new ImageReadParam();
myinstream = ImageIO.createImageInputStream(new File(gewaehltesbild));
myreader.setInput(myinstream, false);
myparam = myreader.getDefaultReadParam();
myparam.setSourceSubsampling(6, 6, 0, 0);
mythumbnail = myreader.read(0, myparam);
} catch (IOException e) {
System.err.println("Ein-/Ausgabeproblem.");
} catch (UnsupportedOperationException e) {
System.err.println("Nicht unterstuetzte Operation.");
} catch (IllegalStateException e) {
System.err.println("Keine Eingabequelle gesetzt.");
} catch (IndexOutOfBoundsException e) {
System.err.println("Index ausserhalb.");
}
}
public BufferedImage getmyBuffer() {
return mybuffer;
}
public BufferedImage getmyThumb() {
return mythumbnail;
}
}
