swing:start
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swing:start [2015/05/02 13:00] gthanos |
swing:start [2015/05/02 13:27] gthanos [FlowLayout Manager] |
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| {{ :swing:borderlayoutdemo.png?400 |}} | {{ :swing:borderlayoutdemo.png?400 |}} | ||
| - | ===== Flow Layout Manager ===== | + | ===== FlowLayout Manager ===== |
| + | |||
| + | Όπως προαναφέραμε ο //FlowLayout Manager// εμφανίζει τα στοιχεία με τη σειρά που προστίθενται σε μία σειρά από αριστερά προς τα δεξιά. Αν το μέγεθος του παραθύρου δεν επαρκεί η τοποθέτηση των στοιχείων συνεχίζει και στην επόμενη σειρά. Δείτε το παραπάνω παράδειγμα κώδικα παραλλαγμένο ώστε να χρησιμοποιεί //FlowLayout Manager//. | ||
| + | |||
| + | <code java FlowLayoutDemo.java> | ||
| + | import javax.swing.*; | ||
| + | import java.awt.event.ActionListener; | ||
| + | import java.awt.event.ActionEvent; | ||
| + | import java.awt.*; | ||
| + | |||
| + | public class FlowLayoutDemo extends JFrame { | ||
| + | public FlowLayoutDemo () { | ||
| + | super(); | ||
| + | setSize(300, 150); | ||
| + | setTitle("FlowLayout Demo"); | ||
| + | |||
| + | /* Select FlowLayout.LEFT for left alignment. | ||
| + | * Select FlowLayout.RIGHT for right alignment. | ||
| + | * Select FlowLayout.CENTER for center alignment (this is the default). | ||
| + | */ | ||
| + | setLayout(new FlowLayout(FlowLayout.LEFT)); | ||
| + | setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE); | ||
| + | |||
| + | ButtonListener listener = new ButtonListener(); | ||
| + | JButton northButton = new JButton("North Button"); | ||
| + | northButton.addActionListener( listener ); | ||
| + | add(northButton); | ||
| + | |||
| + | JButton southButton = new JButton("South Button"); | ||
| + | southButton.addActionListener( listener ); | ||
| + | add(southButton); | ||
| + | |||
| + | JButton westButton = new JButton("West Button"); | ||
| + | westButton.addActionListener( listener ); | ||
| + | add(westButton); | ||
| + | |||
| + | JButton eastButton = new JButton("East Button"); | ||
| + | eastButton.addActionListener( listener ); | ||
| + | add(eastButton); | ||
| + | |||
| + | JButton centerButton = new JButton("Center Button"); | ||
| + | centerButton.addActionListener( listener ); | ||
| + | add(centerButton); | ||
| + | } | ||
| + | |||
| + | public class ButtonListener implements ActionListener { | ||
| + | public void actionPerformed(ActionEvent e) { | ||
| + | System.out.println(e); | ||
| + | System.exit(1); | ||
| + | } | ||
| + | } | ||
| + | |||
| + | public static void main(String[] args) { | ||
| + | FlowLayoutDemo w = new FlowLayoutDemo(); | ||
| + | w.setVisible(true); | ||
| + | } | ||
| + | } | ||
| + | </code> | ||
| + | |||
| + | Το παράθυρο που προκύπτει δίνεται παρακάτω. Δοκιμάστε να αλλάξετε την στοίχιση σε δεξιά ή κεντρική μεταβάλλοντας την γραμμή ''setLayout(new FlowLayout(FlowLayout.LEFT));'' σε | ||
| + | *''setLayout(new FlowLayout(FlowLayout.RIGHT));'' ή | ||
| + | *''setLayout(new FlowLayout(FlowLayout.CENTER));'' | ||
| + | |||
| + | {{ :swing:flowlayoutdemo.png |}} | ||
| ===== Grid Layout Manager ===== | ===== Grid Layout Manager ===== | ||
swing/start.txt · Last modified: 2016/02/26 11:15 (external edit)
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