Admin: 1 версия

2010-05-31T14:23:41Z

1 версия

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== 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>

Java by API/java.awt/GridBagConstraints - История изменений

в 17:43, 31 мая 2010

Admin: 1 версия

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