Search...
FAQs
Subscribe
Pie
FAQs
Recent topics
Flagged topics
Hot topics
Best topics
Search...
Search within Swing / AWT / SWT
Search Coderanch
Advance search
Google search
Register / Login
Post Reply
Bookmark Topic
Watch Topic
New Topic
programming forums
Java
Mobile
Certification
Databases
Caching
Books
Engineering
Micro Controllers
OS
Languages
Paradigms
IDEs
Build Tools
Frameworks
Application Servers
Open Source
This Site
Careers
Other
Pie Elite
all forums
this forum made possible by our volunteer staff, including ...
Marshals:
Campbell Ritchie
Jeanne Boyarsky
Ron McLeod
Paul Clapham
Liutauras Vilda
Sheriffs:
paul wheaton
Rob Spoor
Devaka Cooray
Saloon Keepers:
Stephan van Hulst
Tim Holloway
Carey Brown
Frits Walraven
Tim Moores
Bartenders:
Mikalai Zaikin
Forum:
Swing / AWT / SWT
synchronize two ScrollPane
Laszlo
Greenhorn
Posts: 4
posted 19 years ago
Number of slices to send:
Optional 'thank-you' note:
Send
Hi Everyone,
How can I synchronize two scroll pane?
Have anyone some code sample?
Thank you,
Laszlo
☻♪♂
Craig Wood
Ranch Hand
Posts: 1535
posted 19 years ago
Number of slices to send:
Optional 'thank-you' note:
Send
import java.awt.*; import java.awt.event.*; import javax.swing.*; public class ScrollPaneTest { public ScrollPaneTest() { JScrollPane scrollPane1 = new JScrollPane(getPanel()); JScrollPane scrollPane2 = new JScrollPane(getPanel()); Synchronizer synchronizer = new Synchronizer(scrollPane1, scrollPane2); scrollPane1.getVerticalScrollBar().addAdjustmentListener(synchronizer); scrollPane1.getHorizontalScrollBar().addAdjustmentListener(synchronizer); scrollPane2.getVerticalScrollBar().addAdjustmentListener(synchronizer); scrollPane2.getHorizontalScrollBar().addAdjustmentListener(synchronizer); JPanel panel = new JPanel(new GridLayout(1,0)); panel.add(scrollPane1); panel.add(scrollPane2); JFrame f = new JFrame(); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); f.getContentPane().add(panel); f.setSize(500,300); f.setLocation(200,200); f.setVisible(true); } private JPanel getPanel() { JPanel panel = new JPanel() { GradientPaint gradient; protected void paintComponent(Graphics g) { super.paintComponent(g); Graphics2D g2 = (Graphics2D)g; if(gradient == null) init(); g2.setPaint(gradient); g2.fillRect(0, 0, getWidth(), getHeight()); } private void init() { gradient = new GradientPaint(0, 0, Color.red, getWidth(), getHeight(), Color.blue); } }; panel.setPreferredSize(new Dimension(400,400)); return panel; } public static void main(String[] args) { new ScrollPaneTest(); } } class Synchronizer implements AdjustmentListener { JScrollBar v1, h1, v2, h2; public Synchronizer(JScrollPane sp1, JScrollPane sp2) { v1 = sp1.getVerticalScrollBar(); h1 = sp1.getHorizontalScrollBar(); v2 = sp2.getVerticalScrollBar(); h2 = sp2.getHorizontalScrollBar(); } public void adjustmentValueChanged(AdjustmentEvent e) { JScrollBar scrollBar = (JScrollBar)e.getSource(); int value = scrollBar.getValue(); JScrollBar target = null; if(scrollBar == v1) target = v2; if(scrollBar == h1) target = h2; if(scrollBar == v2) target = v1; if(scrollBar == h2) target = h1; target.setValue(value); } }
Michael Dunn
Ranch Hand
Posts: 4632
posted 19 years ago
Number of slices to send:
Optional 'thank-you' note:
Send
import java.awt.*; import java.awt.event.*; import javax.swing.*; class Testing extends JFrame { public Testing() { JScrollPane sp1 = new JScrollPane(new ScrollPanel()); JScrollBar sBar1 = sp1.getVerticalScrollBar(); JScrollPane sp2 = new JScrollPane(new ScrollPanel()); JScrollBar sBar2 = sp2.getVerticalScrollBar(); sBar2.setModel(sBar1.getModel()); //<--------------synchronize getContentPane().setLayout(new GridLayout(1,2)); getContentPane().add(sp1); getContentPane().add(sp2); setDefaultCloseOperation(EXIT_ON_CLOSE); setSize(400,300); setLocation(400,300); } public static void main(String[] args) {new Testing().setVisible(true);} } class ScrollPanel extends JPanel { public ScrollPanel() { setLayout(new GridLayout(50,1)); for(int x = 0; x < 50; x++) add(new JLabel(""+(x+1))); } }
Laszlo
Greenhorn
Posts: 4
posted 19 years ago
Number of slices to send:
Optional 'thank-you' note:
Send
it is perfect, thank you
☻♪♂
With a little knowledge, a
cast iron skillet
is non-stick and lasts a lifetime.
reply
reply
Bookmark Topic
Watch Topic
New Topic
Boost this thread!
Similar Threads
object lock
synchronisation
Dan's thread
Listener Thread Question
Database Locks
More...