Java by API/java.awt/GridBagConstraints
Содержание
- 1 GridBagConstraints.BOTH
- 2 GridBagConstraints.CENTER
- 3 GridBagConstraints.fill
- 4 GridBagConstraints.gridheight
- 5 GridBagConstraints.gridwidth
- 6 GridBagConstraints.gridx
- 7 GridBagConstraints.gridy
- 8 GridBagConstraints.ipadx
- 9 GridBagConstraints.ipady
- 10 GridBagConstraints.NONE
- 11 GridBagConstraints.RELATIVE
- 12 GridBagConstraints.weightx
- 13 GridBagConstraints.weighty
- 14 new GridBagConstraints()
- 15 new GridBagConstraints(int gx, int gy, int gw, int gh, double wx, double wy, int a, int f, Insets i, int ipx, int ipy)
GridBagConstraints.BOTH
<source lang="java">
import java.awt.Container; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import java.awt.Insets; import javax.swing.BorderFactory; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.border.Border; public class MainClass {
public static void main(String[] args) { JFrame aWindow = new JFrame(); aWindow.setBounds(200, 200, 200, 200); aWindow.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); Container content = aWindow.getContentPane(); content.add(new GridBagLayoutPanel()); aWindow.setVisible(true); }
} class GridBagLayoutPanel extends JPanel {
public GridBagLayoutPanel() { GridBagLayout gridbag = new GridBagLayout(); GridBagConstraints constraints = new GridBagConstraints(); setLayout(gridbag); constraints.weightx = constraints.weighty = 10.0; constraints.fill = constraints.NONE; constraints.ipadx = 30; constraints.ipady = 10; addButton("Press", constraints, gridbag); constraints.weightx = 5.0; constraints.fill = constraints.BOTH; constraints.ipadx = constraints.ipady = 0; constraints.insets = new Insets(10, 30, 10, 20); constraints.gridwidth = constraints.RELATIVE; constraints.gridheight = 2; addButton("GO", constraints, gridbag); constraints.insets = new Insets(0, 0, 0, 0); constraints.gridx = 0; constraints.fill = constraints.NONE; constraints.ipadx = 30; constraints.ipady = 10; constraints.gridwidth = 1; constraints.gridheight = 1; addButton("Push", constraints, gridbag); } private void addButton(String label, GridBagConstraints constraints, GridBagLayout layout) { Border edge = BorderFactory.createRaisedBevelBorder(); JButton button = new JButton(label); button.setBorder(edge); layout.setConstraints(button, constraints); add(button); }
}
</source>
GridBagConstraints.CENTER
<source lang="java">
import java.awt.ruponent; import java.awt.Container; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import java.awt.Insets; import javax.swing.JButton; import javax.swing.JFrame; public class MainClass {
public static void main(String[] a) { final JFrame frame = new JFrame("GridBagLayout"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setLayout(new GridBagLayout()); JButton button; button = new JButton("One"); addComponent(frame, button, 0, 0, 1, 1, GridBagConstraints.CENTER, GridBagConstraints.NONE); button = new JButton("Two"); addComponent(frame, button, 1, 0, 1, 1, GridBagConstraints.CENTER, GridBagConstraints.NONE); button = new JButton("Three"); addComponent(frame, button, 0, 1, 2, 1, GridBagConstraints.CENTER, GridBagConstraints.NONE); button = new JButton("Four"); addComponent(frame, button, 0, 2, 1, 1, GridBagConstraints.CENTER, GridBagConstraints.NONE); frame.setSize(500, 200); frame.setVisible(true); } private static void addComponent(Container container, Component component, int gridx, int gridy, int gridwidth, int gridheight, int anchor, int fill) { Insets insets = new Insets(0,0,0,0); GridBagConstraints gbc = new GridBagConstraints(gridx, gridy, gridwidth, gridheight, 1.0, 1.0, anchor, fill, insets, 0, 0); container.add(component, gbc); }
}
</source>
GridBagConstraints.fill
<source lang="java">
import java.awt.ruponent; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; public class MainClass extends JPanel {
GridBagConstraints constraints = new GridBagConstraints(); public MainClass() { setLayout(new GridBagLayout()); constraints.weightx = 1.0; constraints.weighty = 1.0; constraints.fill = GridBagConstraints.BOTH; int x, y; // for clarity addGB(new JButton("North"), x = 1, y = 0); addGB(new JButton("West"), x = 0, y = 1); addGB(new JButton("Center"), x = 1, y = 1); addGB(new JButton("East"), x = 2, y = 1); addGB(new JButton("South"), x = 1, y = 2); } void addGB(Component component, int x, int y) { constraints.gridx = x; constraints.gridy = y; add(component, constraints); } public static void main(String[] args) { JFrame frame = new JFrame("MainClass"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(225, 150); frame.setLocation(200, 200); frame.setContentPane(new MainClass()); frame.setVisible(true); }
}
</source>
GridBagConstraints.gridheight
<source lang="java">
import java.awt.ruponent; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; public class MainClass extends JPanel {
GridBagConstraints constraints = new GridBagConstraints(); public MainClass() { setLayout(new GridBagLayout()); constraints.weightx = 1.0; constraints.weighty = 1.0; constraints.fill = GridBagConstraints.BOTH; int x, y; constraints.gridheight = 2; // span two rows addGB(new JButton("one"), x = 0, y = 0); constraints.gridheight = 1; // set it back addGB(new JButton("two"), x = 1, y = 0); addGB(new JButton("three"), x = 2, y = 0); constraints.gridwidth = 2; // span two columns addGB(new JButton("four"), x = 1, y = 1); constraints.gridwidth = 1; // set it back } void addGB(Component component, int x, int y) { constraints.gridx = x; constraints.gridy = y; add(component, constraints); } public static void main(String[] args) { JFrame frame = new JFrame("MainClass"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(200, 200); frame.setLocation(200, 200); frame.setContentPane(new MainClass()); frame.setVisible(true); }
}
</source>
GridBagConstraints.gridwidth
<source lang="java">
/*
* * Copyright (c) 1998 Sun Microsystems, Inc. All Rights Reserved. * * Sun grants you ("Licensee") a non-exclusive, royalty free, license to use, * modify and redistribute this software in source and binary code form, * provided that i) this copyright notice and license appear on all copies of * the software; and ii) Licensee does not utilize the software in a manner * which is disparaging to Sun. * * This software is provided "AS IS," without a warranty of any kind. ALL * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY * IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR * NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE * LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING * OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS * LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, * INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF * OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE * POSSIBILITY OF SUCH DAMAGES. * * This software is not designed or intended for use in on-line control of * aircraft, air traffic, aircraft navigation or aircraft communications; or in * the design, construction, operation or maintenance of any nuclear * facility. Licensee represents and warrants that it will not use or * redistribute the Software for such purposes. */
/*
* ContainerEventDemo.java requires no other files. */
import java.awt.Dimension; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.ContainerEvent; import java.awt.event.ContainerListener; import java.util.Vector; import javax.swing.BorderFactory; import javax.swing.JButton; import javax.swing.JComponent; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JTextArea; public class Main extends JPanel implements ContainerListener, ActionListener {
JTextArea display; JPanel buttonPanel; JButton addButton, removeButton, clearButton; Vector<JButton> buttonList; static final String ADD = "add"; static final String REMOVE = "remove"; static final String CLEAR = "clear"; static final String newline = "\n"; public Main() { super(new GridBagLayout()); GridBagLayout gridbag = (GridBagLayout) getLayout(); GridBagConstraints c = new GridBagConstraints(); // Initialize an empty list of buttons. buttonList = new Vector<JButton>(10, 10); // Create all the components. addButton = new JButton("Add a button"); addButton.setActionCommand(ADD); addButton.addActionListener(this); removeButton = new JButton("Remove a button"); removeButton.setActionCommand(REMOVE); removeButton.addActionListener(this); buttonPanel = new JPanel(new GridLayout(1, 1)); buttonPanel.setPreferredSize(new Dimension(200, 75)); buttonPanel.addContainerListener(this); display = new JTextArea(); display.setEditable(false); JScrollPane scrollPane = new JScrollPane(display); scrollPane.setPreferredSize(new Dimension(200, 75)); clearButton = new JButton("Clear text area"); clearButton.setActionCommand(CLEAR); clearButton.addActionListener(this); c.fill = GridBagConstraints.BOTH; // Fill entire cell. c.weighty = 1.0; // Button area and message area have equal height. c.gridwidth = GridBagConstraints.REMAINDER; // end of row gridbag.setConstraints(scrollPane, c); add(scrollPane); c.weighty = 0.0; gridbag.setConstraints(clearButton, c); add(clearButton); c.weightx = 1.0; // Add/remove buttons have equal width. c.gridwidth = 1; // NOT end of row gridbag.setConstraints(addButton, c); add(addButton); c.gridwidth = GridBagConstraints.REMAINDER; // end of row gridbag.setConstraints(removeButton, c); add(removeButton); c.weighty = 1.0; // Button area and message area have equal height. gridbag.setConstraints(buttonPanel, c); add(buttonPanel); setPreferredSize(new Dimension(400, 400)); setBorder(BorderFactory.createEmptyBorder(20, 20, 20, 20)); } public void componentAdded(ContainerEvent e) { displayMessage(" added to ", e); } public void componentRemoved(ContainerEvent e) { displayMessage(" removed from ", e); } void displayMessage(String action, ContainerEvent e) { display.append(((JButton) e.getChild()).getText() + " was" + action + e.getContainer().getClass().getName() + newline); display.setCaretPosition(display.getDocument().getLength()); } /* * This could have been implemented as two or three classes or objects, for * clarity. */ public void actionPerformed(ActionEvent e) { String command = e.getActionCommand(); if (ADD.equals(command)) { JButton newButton = new JButton("JButton #" + (buttonList.size() + 1)); buttonList.addElement(newButton); buttonPanel.add(newButton); buttonPanel.revalidate(); // Make the button show up. } else if (REMOVE.equals(command)) { int lastIndex = buttonList.size() - 1; try { JButton nixedButton = buttonList.elementAt(lastIndex); buttonPanel.remove(nixedButton); buttonList.removeElementAt(lastIndex); buttonPanel.revalidate(); // Make the button disappear. buttonPanel.repaint(); // Make the button disappear. } catch (ArrayIndexOutOfBoundsException exc) { } } else if (CLEAR.equals(command)) { display.setText(""); } } /** * Create the GUI and show it. For thread safety, this method should be * invoked from the event-dispatching thread. */ private static void createAndShowGUI() { // Create and set up the window. JFrame frame = new JFrame("ContainerEventDemo"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // Create and set up the content pane. JComponent newContentPane = new Main(); newContentPane.setOpaque(true); // content panes must be opaque frame.setContentPane(newContentPane); // Display the window. frame.pack(); frame.setVisible(true); } public static void main(String[] args) { // Schedule a job for the event-dispatching thread: // creating and showing this application"s GUI. javax.swing.SwingUtilities.invokeLater(new Runnable() { public void run() { createAndShowGUI(); } }); }
}
</source>
GridBagConstraints.gridx
<source lang="java">
import java.awt.ruponent; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; public class MainClass extends JPanel {
GridBagConstraints constraints = new GridBagConstraints(); public MainClass() { setLayout(new GridBagLayout()); int x, y; // for clarity addGB(new JButton("North"), x = 1, y = 0); addGB(new JButton("West"), x = 0, y = 1); addGB(new JButton("Center"), x = 1, y = 1); addGB(new JButton("East"), x = 2, y = 1); addGB(new JButton("South"), x = 1, y = 2); } void addGB(Component component, int x, int y) { constraints.gridx = x; constraints.gridy = y; add(component, constraints); } public static void main(String[] args) { JFrame frame = new JFrame("GridBag1"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(225, 150); frame.setLocation(200, 200); frame.setContentPane(new MainClass()); frame.setVisible(true); }
}
</source>
GridBagConstraints.gridy
<source lang="java">
//gridx import java.awt.ruponent; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; public class MainClass extends JPanel {
GridBagConstraints constraints = new GridBagConstraints(); public MainClass() { setLayout(new GridBagLayout()); int x, y; // for clarity addGB(new JButton("North"), x = 1, y = 0); addGB(new JButton("West"), x = 0, y = 1); addGB(new JButton("Center"), x = 1, y = 1); addGB(new JButton("East"), x = 2, y = 1); addGB(new JButton("South"), x = 1, y = 2); } void addGB(Component component, int x, int y) { constraints.gridx = x; constraints.gridy = y; add(component, constraints); } public static void main(String[] args) { JFrame frame = new JFrame("GridBag1"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(225, 150); frame.setLocation(200, 200); frame.setContentPane(new MainClass()); frame.setVisible(true); }
}
</source>
GridBagConstraints.ipadx
<source lang="java">
import java.awt.ruponent; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; public class MainClass extends JPanel {
GridBagConstraints constraints = new GridBagConstraints(); public MainClass() { setLayout(new GridBagLayout()); int x, y; // for clarity addGB(new JButton("North"), x = 1, y = 0); constraints.ipadx = 25; // add padding constraints.ipady = 25; addGB(new JButton("West"), x = 0, y = 1); constraints.ipadx = 0; // remove padding constraints.ipady = 0; addGB(new JButton("Center"), x = 1, y = 1); addGB(new JButton("East"), x = 2, y = 1); addGB(new JButton("South"), x = 1, y = 2); } void addGB(Component component, int x, int y) { constraints.gridx = x; constraints.gridy = y; add(component, constraints); } public static void main(String[] args) { JFrame frame = new JFrame("MainClass"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(250, 250); frame.setLocation(200, 200); frame.setContentPane(new MainClass()); frame.setVisible(true); }
}
</source>
GridBagConstraints.ipady
<source lang="java">
import java.awt.ruponent; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; public class MainClass extends JPanel {
GridBagConstraints constraints = new GridBagConstraints(); public MainClass() { setLayout(new GridBagLayout()); int x, y; // for clarity addGB(new JButton("North"), x = 1, y = 0); constraints.ipadx = 25; // add padding constraints.ipady = 25; addGB(new JButton("West"), x = 0, y = 1); constraints.ipadx = 0; // remove padding constraints.ipady = 0; addGB(new JButton("Center"), x = 1, y = 1); addGB(new JButton("East"), x = 2, y = 1); addGB(new JButton("South"), x = 1, y = 2); } void addGB(Component component, int x, int y) { constraints.gridx = x; constraints.gridy = y; add(component, constraints); } public static void main(String[] args) { JFrame frame = new JFrame("MainClass"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(250, 250); frame.setLocation(200, 200); frame.setContentPane(new MainClass()); frame.setVisible(true); }
}
</source>
GridBagConstraints.NONE
<source lang="java">
import java.awt.Container; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import java.awt.Insets; import javax.swing.BorderFactory; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.border.Border; public class MainClass {
public static void main(String[] args) { JFrame aWindow = new JFrame(); aWindow.setBounds(200, 200, 200, 200); aWindow.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); Container content = aWindow.getContentPane(); content.add(new GridBagLayoutPanel()); aWindow.setVisible(true); }
} class GridBagLayoutPanel extends JPanel {
public GridBagLayoutPanel() { GridBagLayout gridbag = new GridBagLayout(); GridBagConstraints constraints = new GridBagConstraints(); setLayout(gridbag); constraints.weightx = constraints.weighty = 10.0; constraints.fill = constraints.NONE; constraints.ipadx = 30; constraints.ipady = 10; addButton("Press", constraints, gridbag); constraints.weightx = 5.0; constraints.fill = constraints.BOTH; constraints.ipadx = constraints.ipady = 0; constraints.insets = new Insets(10, 30, 10, 20); constraints.gridwidth = constraints.RELATIVE; constraints.gridheight = 2; addButton("GO", constraints, gridbag); constraints.insets = new Insets(0, 0, 0, 0); constraints.gridx = 0; constraints.fill = constraints.NONE; constraints.ipadx = 30; constraints.ipady = 10; constraints.gridwidth = 1; constraints.gridheight = 1; addButton("Push", constraints, gridbag); } private void addButton(String label, GridBagConstraints constraints, GridBagLayout layout) { Border edge = BorderFactory.createRaisedBevelBorder(); JButton button = new JButton(label); button.setBorder(edge); layout.setConstraints(button, constraints); add(button); }
}
</source>
GridBagConstraints.RELATIVE
<source lang="java">
import java.awt.Container; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import java.awt.Insets; import javax.swing.BorderFactory; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.border.Border; public class MainClass {
public static void main(String[] args) { JFrame aWindow = new JFrame(); aWindow.setBounds(200, 200, 200, 200); aWindow.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); Container content = aWindow.getContentPane(); content.add(new GridBagLayoutPanel()); aWindow.setVisible(true); }
} class GridBagLayoutPanel extends JPanel {
public GridBagLayoutPanel() { GridBagLayout gridbag = new GridBagLayout(); GridBagConstraints constraints = new GridBagConstraints(); setLayout(gridbag); constraints.weightx = constraints.weighty = 10.0; constraints.fill = constraints.NONE; constraints.ipadx = 30; constraints.ipady = 10; addButton("Press", constraints, gridbag); constraints.weightx = 5.0; constraints.fill = constraints.BOTH; constraints.ipadx = constraints.ipady = 0; constraints.insets = new Insets(10, 30, 10, 20); constraints.gridwidth = constraints.RELATIVE; constraints.gridheight = 2; addButton("GO", constraints, gridbag); constraints.insets = new Insets(0, 0, 0, 0); constraints.gridx = 0; constraints.fill = constraints.NONE; constraints.ipadx = 30; constraints.ipady = 10; constraints.gridwidth = 1; constraints.gridheight = 1; addButton("Push", constraints, gridbag); } private void addButton(String label, GridBagConstraints constraints, GridBagLayout layout) { Border edge = BorderFactory.createRaisedBevelBorder(); JButton button = new JButton(label); button.setBorder(edge); layout.setConstraints(button, constraints); add(button); }
}
</source>
GridBagConstraints.weightx
<source lang="java">
import java.awt.ruponent; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; public class MainClass extends JPanel {
GridBagConstraints constraints = new GridBagConstraints(); public MainClass() { setLayout(new GridBagLayout()); constraints.weightx = 1.0; constraints.weighty = 1.0; constraints.fill = GridBagConstraints.BOTH; int x, y; // for clarity addGB(new JButton("North"), x = 1, y = 0); addGB(new JButton("West"), x = 0, y = 1); addGB(new JButton("Center"), x = 1, y = 1); addGB(new JButton("East"), x = 2, y = 1); addGB(new JButton("South"), x = 1, y = 2); } void addGB(Component component, int x, int y) { constraints.gridx = x; constraints.gridy = y; add(component, constraints); } public static void main(String[] args) { JFrame frame = new JFrame("MainClass"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(225, 150); frame.setLocation(200, 200); frame.setContentPane(new MainClass()); frame.setVisible(true); }
}
</source>
GridBagConstraints.weighty
<source lang="java">
import java.awt.ruponent; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; public class MainClass extends JPanel {
GridBagConstraints constraints = new GridBagConstraints(); public MainClass() { setLayout(new GridBagLayout()); constraints.weightx = 1.0; constraints.weighty = 1.0; constraints.fill = GridBagConstraints.BOTH; int x, y; // for clarity addGB(new JButton("North"), x = 1, y = 0); addGB(new JButton("West"), x = 0, y = 1); addGB(new JButton("Center"), x = 1, y = 1); addGB(new JButton("East"), x = 2, y = 1); addGB(new JButton("South"), x = 1, y = 2); } void addGB(Component component, int x, int y) { constraints.gridx = x; constraints.gridy = y; add(component, constraints); } public static void main(String[] args) { JFrame frame = new JFrame("MainClass"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(225, 150); frame.setLocation(200, 200); frame.setContentPane(new MainClass()); frame.setVisible(true); }
}
</source>
new GridBagConstraints()
<source lang="java">
import java.awt.Container; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import java.awt.Insets; import javax.swing.BorderFactory; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.border.Border; public class MainClass {
public static void main(String[] args) { JFrame aWindow = new JFrame(); aWindow.setBounds(200, 200, 200, 200); aWindow.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); Container content = aWindow.getContentPane(); content.add(new GridBagLayoutPanel()); aWindow.setVisible(true); }
} class GridBagLayoutPanel extends JPanel {
public GridBagLayoutPanel() { GridBagLayout gridbag = new GridBagLayout(); GridBagConstraints constraints = new GridBagConstraints(); setLayout(gridbag); constraints.weightx = constraints.weighty = 10.0; constraints.fill = constraints.NONE; constraints.ipadx = 30; constraints.ipady = 10; addButton("Press", constraints, gridbag); constraints.weightx = 5.0; constraints.fill = constraints.BOTH; constraints.ipadx = constraints.ipady = 0; constraints.insets = new Insets(10, 30, 10, 20); constraints.gridwidth = constraints.RELATIVE; constraints.gridheight = 2; addButton("GO", constraints, gridbag); constraints.insets = new Insets(0, 0, 0, 0); constraints.gridx = 0; constraints.fill = constraints.NONE; constraints.ipadx = 30; constraints.ipady = 10; constraints.gridwidth = 1; constraints.gridheight = 1; addButton("Push", constraints, gridbag); } private void addButton(String label, GridBagConstraints constraints, GridBagLayout layout) { Border edge = BorderFactory.createRaisedBevelBorder(); JButton button = new JButton(label); button.setBorder(edge); layout.setConstraints(button, constraints); add(button); }
}
</source>
new GridBagConstraints(int gx, int gy, int gw, int gh, double wx, double wy, int a, int f, Insets i, int ipx, int ipy)
<source lang="java">
import java.awt.ruponent; import java.awt.Container; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import java.awt.Insets; import javax.swing.JButton; import javax.swing.JFrame; public class MainClass {
public static void main(String[] a) { final JFrame frame = new JFrame("GridBagLayout"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setLayout(new GridBagLayout()); JButton button; button = new JButton("One"); addComponent(frame, button, 0, 0, 1, 1, GridBagConstraints.CENTER, GridBagConstraints.NONE); button = new JButton("Two"); addComponent(frame, button, 1, 0, 1, 1, GridBagConstraints.CENTER, GridBagConstraints.NONE); button = new JButton("Three"); addComponent(frame, button, 0, 1, 2, 1, GridBagConstraints.CENTER, GridBagConstraints.NONE); button = new JButton("Four"); addComponent(frame, button, 0, 2, 1, 1, GridBagConstraints.CENTER, GridBagConstraints.NONE); frame.setSize(500, 200); frame.setVisible(true); } private static void addComponent(Container container, Component component, int gridx, int gridy, int gridwidth, int gridheight, int anchor, int fill) { Insets insets = new Insets(0,0,0,0); GridBagConstraints gbc = new GridBagConstraints(gridx, gridy, gridwidth, gridheight, 1.0, 1.0, anchor, fill, insets, 0, 0); container.add(component, gbc); }
}
</source>