GridBagLayout Example: Unterschied zwischen den Versionen
Aus Byte-Welt Wiki
Zur Navigation springenZur Suche springenK (→GridBagLayout example) |
(→GridBagLayout example) |
||
Zeile 138: | Zeile 138: | ||
frame.setLocationRelativeTo(null); | frame.setLocationRelativeTo(null); | ||
frame.setContentPane(new GridBagLayoutExample()); | frame.setContentPane(new GridBagLayoutExample()); | ||
+ | frame.setVisible(true); | ||
+ | } | ||
+ | }); | ||
+ | } | ||
+ | } | ||
+ | </code=java> | ||
+ | |||
+ | |||
+ | Here is the same example, but using relative coordinates (the last component of each row being marked with gridwidth=REMAINDER): | ||
+ | |||
+ | <code=java> | ||
+ | import java.awt.*; | ||
+ | import static java.awt.GridBagConstraints.*; | ||
+ | import javax.swing.*; | ||
+ | |||
+ | public class GridBagLayoutExample2 extends JPanel { | ||
+ | |||
+ | //GB arguments: | ||
+ | private int gridx, gridy, gridwidth, gridheight, fill, anchor, ipadx, ipady; | ||
+ | private double weightx, weighty; | ||
+ | private Insets insets; | ||
+ | // GB Insets: | ||
+ | private int top, left, bottom, right; | ||
+ | private final Insets insetsTop = new Insets(top = 5, left = 0, bottom = 15, right = 0); | ||
+ | private final Insets insetsLabel = new Insets(top = 0, left = 10, bottom = 6, right = 5); | ||
+ | private final Insets insetsText = new Insets(top = 0, left = 0, bottom = 6, right = 10); | ||
+ | private final Insets insetsBottom = new Insets(top = 10, left = 0, bottom = 10, right = 0); | ||
+ | //input fields: | ||
+ | private JTextField name; | ||
+ | private JTextField age; | ||
+ | private JTextArea comment; | ||
+ | private JButton btOK; | ||
+ | |||
+ | public GridBagLayoutExample2() { | ||
+ | setLayout(new GridBagLayout()); | ||
+ | example(); | ||
+ | } | ||
+ | |||
+ | private void example() { | ||
+ | //header row: | ||
+ | setDefaultValuesGB();// default values for all GridBagConstraints | ||
+ | addGB(new JLabel("Registration form"), gridx, gridy, | ||
+ | gridwidth = REMAINDER, gridheight, fill, | ||
+ | weightx = 1.0, weighty, anchor, | ||
+ | insets = insetsTop); | ||
+ | //name row (label): | ||
+ | setDefaultValuesGB();// default values for all GridBagConstraints | ||
+ | addGB(new JLabel("Name"), gridx, gridy, | ||
+ | gridwidth, gridheight, fill, | ||
+ | weightx, weighty, anchor = LINE_START, | ||
+ | insets = insetsLabel); | ||
+ | //name row (textfield): | ||
+ | name = new JTextField(); | ||
+ | setDefaultValuesGB();// default values for all GridBagConstraints | ||
+ | addGB(name, gridx, gridy, | ||
+ | gridwidth = REMAINDER, gridheight, fill = HORIZONTAL, | ||
+ | weightx = 1.0, weighty, anchor, | ||
+ | insets = insetsText); | ||
+ | //age row (label): | ||
+ | setDefaultValuesGB();// default values for all GridBagConstraints | ||
+ | addGB(new JLabel("Age"), gridx, gridy, | ||
+ | gridwidth, gridheight, fill, | ||
+ | weightx, weighty, anchor = LINE_START, | ||
+ | insets = insetsLabel); | ||
+ | //age row (textfield): | ||
+ | age = new JTextField(3); | ||
+ | age.setMinimumSize(age.getPreferredSize()); | ||
+ | setDefaultValuesGB();// default values for all GridBagConstraints | ||
+ | addGB(age, gridx, gridy, | ||
+ | gridwidth = REMAINDER, gridheight, fill, | ||
+ | weightx, weighty, anchor = LINE_START, | ||
+ | insets = insetsText); | ||
+ | //comment row (label): | ||
+ | setDefaultValuesGB();// default values for all GridBagConstraints | ||
+ | addGB(new JLabel("Comment"), gridx, gridy, | ||
+ | gridwidth, gridheight, fill, | ||
+ | weightx, weighty, anchor = FIRST_LINE_START, | ||
+ | insets = insetsLabel); | ||
+ | //comment row (textfield): | ||
+ | comment = new JTextArea(); | ||
+ | setDefaultValuesGB();// default values for all GridBagConstraints | ||
+ | addGB(new JScrollPane(comment), gridx, gridy, | ||
+ | gridwidth = REMAINDER, gridheight, fill = BOTH, | ||
+ | weightx = 1.0, weighty = 1.0, anchor, | ||
+ | insets = insetsText); | ||
+ | //trailer row: | ||
+ | btOK = new JButton("OK"); | ||
+ | setDefaultValuesGB();// default values for all GridBagConstraints | ||
+ | addGB(btOK, gridx, gridy, | ||
+ | gridwidth = REMAINDER, gridheight, fill, | ||
+ | weightx, weighty, anchor, | ||
+ | insets = insetsBottom); | ||
+ | } | ||
+ | |||
+ | // Convenience method, used to add components without internal padding: | ||
+ | private void addGB(final Component component, final int gridx, final int gridy, | ||
+ | final int gridwidth, final int gridheight, | ||
+ | final int fill, final double weightx, final double weighty, | ||
+ | final int anchor, final Insets insets) { | ||
+ | addGB(component, gridx, gridy, gridwidth, gridheight, fill, weightx, weighty, anchor, insets, ipadx, ipady); | ||
+ | } | ||
+ | |||
+ | private void addGB(final Component component, final int gridx, final int gridy, | ||
+ | final int gridwidth, final int gridheight, | ||
+ | final int fill, final double weightx, final double weighty, | ||
+ | final int anchor, final Insets insets, | ||
+ | final int ipadx, final int ipady) { | ||
+ | GridBagConstraints constraints = new GridBagConstraints(); | ||
+ | constraints.gridx = gridx; | ||
+ | constraints.gridy = gridy; | ||
+ | constraints.gridwidth = gridwidth; | ||
+ | constraints.gridheight = gridheight; | ||
+ | constraints.fill = fill; | ||
+ | constraints.weightx = weightx; | ||
+ | constraints.weighty = weighty; | ||
+ | constraints.anchor = anchor; | ||
+ | constraints.insets = insets; | ||
+ | constraints.ipadx = ipadx; | ||
+ | constraints.ipady = ipady; | ||
+ | add(component, constraints); | ||
+ | } | ||
+ | |||
+ | private void setDefaultValuesGB() { | ||
+ | // This method sets the default values for all GridBagConstraints, | ||
+ | // so we don't have to specify them with each addGB(...) | ||
+ | gridx = RELATIVE; | ||
+ | gridy = RELATIVE; | ||
+ | gridwidth = 1; | ||
+ | gridheight = 1; | ||
+ | fill = NONE; | ||
+ | weightx = 0.0; | ||
+ | weighty = 0.0; | ||
+ | anchor = CENTER; | ||
+ | insets = new Insets(0, 0, 0, 0); | ||
+ | ipadx = 0; | ||
+ | ipady = 0; | ||
+ | } | ||
+ | |||
+ | public static void main(final String... args) { | ||
+ | SwingUtilities.invokeLater(new Runnable() { | ||
+ | |||
+ | @Override | ||
+ | public void run() { | ||
+ | JFrame frame = new JFrame("GridBagLayout Example"); | ||
+ | frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); | ||
+ | frame.setSize(450, 350); | ||
+ | frame.setLocationRelativeTo(null); | ||
+ | frame.setContentPane(new GridBagLayoutExample2()); | ||
frame.setVisible(true); | frame.setVisible(true); | ||
} | } |
Version vom 16. Februar 2011, 09:50 Uhr
GridBagLayout example
<code=java> import java.awt.*; import static java.awt.GridBagConstraints.*; import javax.swing.*;
public class GridBagLayoutExample extends JPanel {
//GB arguments: private int gridx, gridy, gridwidth, gridheight, fill, anchor, ipadx, ipady; private double weightx, weighty; private Insets insets; // GB Insets: private int top, left, bottom, right; private final Insets insetsTop = new Insets(top = 5, left = 0, bottom = 15, right = 0); private final Insets insetsLabel = new Insets(top = 0, left = 10, bottom = 6, right = 5); private final Insets insetsText = new Insets(top = 0, left = 0, bottom = 6, right = 10); private final Insets insetsBottom = new Insets(top = 10, left = 0, bottom = 10, right = 0); //input fields: private JTextField name; private JTextField age; private JTextArea comment; private JButton btOK;
public GridBagLayoutExample() { setLayout(new GridBagLayout()); example(); }
private void example() { //header row: setDefaultValuesGB();// default values for all GridBagConstraints addGB(new JLabel("Registration form"), gridx = 1, gridy = 1, gridwidth = 2, gridheight, fill, weightx = 1.0, weighty, anchor, insets = insetsTop); //name row (label): setDefaultValuesGB();// default values for all GridBagConstraints addGB(new JLabel("Name"), gridx = 1, gridy = 2, gridwidth, gridheight, fill, weightx, weighty, anchor = LINE_START, insets = insetsLabel); //name row (textfield): name = new JTextField(); setDefaultValuesGB();// default values for all GridBagConstraints addGB(name, gridx = 2, gridy = 2, gridwidth, gridheight, fill = HORIZONTAL, weightx = 1.0, weighty, anchor, insets = insetsText); //age row (label): setDefaultValuesGB();// default values for all GridBagConstraints addGB(new JLabel("Age"), gridx = 1, gridy = 3, gridwidth, gridheight, fill, weightx, weighty, anchor = LINE_START, insets = insetsLabel); //age row (textfield): age = new JTextField(3); age.setMinimumSize(age.getPreferredSize()); setDefaultValuesGB();// default values for all GridBagConstraints addGB(age, gridx = 2, gridy = 3, gridwidth, gridheight, fill, weightx, weighty, anchor = LINE_START, insets = insetsText); //comment row (label): setDefaultValuesGB();// default values for all GridBagConstraints addGB(new JLabel("Comment"), gridx = 1, gridy = 4, gridwidth, gridheight, fill, weightx, weighty, anchor = FIRST_LINE_START, insets = insetsLabel); //comment row (textfield): comment = new JTextArea(); setDefaultValuesGB();// default values for all GridBagConstraints addGB(new JScrollPane(comment), gridx = 2, gridy = 4, gridwidth, gridheight, fill = BOTH, weightx = 1.0, weighty = 1.0, anchor, insets = insetsText); //trailer row: btOK = new JButton("OK"); setDefaultValuesGB();// default values for all GridBagConstraints addGB(btOK, gridx = 1, gridy = 5, gridwidth = 2, gridheight = 1, fill, weightx, weighty, anchor, insets = insetsBottom); }
// Convenience method, used to add components without internal padding: private void addGB(final Component component, final int gridx, final int gridy, final int gridwidth, final int gridheight, final int fill, final double weightx, final double weighty, final int anchor, final Insets insets) { addGB(component, gridx, gridy, gridwidth, gridheight, fill, weightx, weighty, anchor, insets, ipadx, ipady); }
private void addGB(final Component component, final int gridx, final int gridy, final int gridwidth, final int gridheight, final int fill, final double weightx, final double weighty, final int anchor, final Insets insets, final int ipadx, final int ipady) { GridBagConstraints constraints = new GridBagConstraints(); constraints.gridx = gridx; constraints.gridy = gridy; constraints.gridwidth = gridwidth; constraints.gridheight = gridheight; constraints.fill = fill; constraints.weightx = weightx; constraints.weighty = weighty; constraints.anchor = anchor; constraints.insets = insets; constraints.ipadx = ipadx; constraints.ipady = ipady; add(component, constraints); }
private void setDefaultValuesGB() { // This method sets the default values for all GridBagConstraints, // so we don't have to specify them with each addGB(...) gridx = RELATIVE; gridy = RELATIVE; gridwidth = 1; gridheight = 1; fill = NONE; weightx = 0.0; weighty = 0.0; anchor = CENTER; insets = new Insets(0, 0, 0, 0); ipadx = 0; ipady = 0; }
public static void main(final String... args) { SwingUtilities.invokeLater(new Runnable() {
@Override public void run() { JFrame frame = new JFrame("GridBagLayout Example"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(450, 350); frame.setLocationRelativeTo(null); frame.setContentPane(new GridBagLayoutExample()); frame.setVisible(true); } }); }
} </code=java>
Here is the same example, but using relative coordinates (the last component of each row being marked with gridwidth=REMAINDER):
<code=java> import java.awt.*; import static java.awt.GridBagConstraints.*; import javax.swing.*;
public class GridBagLayoutExample2 extends JPanel {
//GB arguments: private int gridx, gridy, gridwidth, gridheight, fill, anchor, ipadx, ipady; private double weightx, weighty; private Insets insets; // GB Insets: private int top, left, bottom, right; private final Insets insetsTop = new Insets(top = 5, left = 0, bottom = 15, right = 0); private final Insets insetsLabel = new Insets(top = 0, left = 10, bottom = 6, right = 5); private final Insets insetsText = new Insets(top = 0, left = 0, bottom = 6, right = 10); private final Insets insetsBottom = new Insets(top = 10, left = 0, bottom = 10, right = 0); //input fields: private JTextField name; private JTextField age; private JTextArea comment; private JButton btOK;
public GridBagLayoutExample2() { setLayout(new GridBagLayout()); example(); }
private void example() { //header row: setDefaultValuesGB();// default values for all GridBagConstraints addGB(new JLabel("Registration form"), gridx, gridy, gridwidth = REMAINDER, gridheight, fill, weightx = 1.0, weighty, anchor, insets = insetsTop); //name row (label): setDefaultValuesGB();// default values for all GridBagConstraints addGB(new JLabel("Name"), gridx, gridy, gridwidth, gridheight, fill, weightx, weighty, anchor = LINE_START, insets = insetsLabel); //name row (textfield): name = new JTextField(); setDefaultValuesGB();// default values for all GridBagConstraints addGB(name, gridx, gridy, gridwidth = REMAINDER, gridheight, fill = HORIZONTAL, weightx = 1.0, weighty, anchor, insets = insetsText); //age row (label): setDefaultValuesGB();// default values for all GridBagConstraints addGB(new JLabel("Age"), gridx, gridy, gridwidth, gridheight, fill, weightx, weighty, anchor = LINE_START, insets = insetsLabel); //age row (textfield): age = new JTextField(3); age.setMinimumSize(age.getPreferredSize()); setDefaultValuesGB();// default values for all GridBagConstraints addGB(age, gridx, gridy, gridwidth = REMAINDER, gridheight, fill, weightx, weighty, anchor = LINE_START, insets = insetsText); //comment row (label): setDefaultValuesGB();// default values for all GridBagConstraints addGB(new JLabel("Comment"), gridx, gridy, gridwidth, gridheight, fill, weightx, weighty, anchor = FIRST_LINE_START, insets = insetsLabel); //comment row (textfield): comment = new JTextArea(); setDefaultValuesGB();// default values for all GridBagConstraints addGB(new JScrollPane(comment), gridx, gridy, gridwidth = REMAINDER, gridheight, fill = BOTH, weightx = 1.0, weighty = 1.0, anchor, insets = insetsText); //trailer row: btOK = new JButton("OK"); setDefaultValuesGB();// default values for all GridBagConstraints addGB(btOK, gridx, gridy, gridwidth = REMAINDER, gridheight, fill, weightx, weighty, anchor, insets = insetsBottom); }
// Convenience method, used to add components without internal padding: private void addGB(final Component component, final int gridx, final int gridy, final int gridwidth, final int gridheight, final int fill, final double weightx, final double weighty, final int anchor, final Insets insets) { addGB(component, gridx, gridy, gridwidth, gridheight, fill, weightx, weighty, anchor, insets, ipadx, ipady); }
private void addGB(final Component component, final int gridx, final int gridy, final int gridwidth, final int gridheight, final int fill, final double weightx, final double weighty, final int anchor, final Insets insets, final int ipadx, final int ipady) { GridBagConstraints constraints = new GridBagConstraints(); constraints.gridx = gridx; constraints.gridy = gridy; constraints.gridwidth = gridwidth; constraints.gridheight = gridheight; constraints.fill = fill; constraints.weightx = weightx; constraints.weighty = weighty; constraints.anchor = anchor; constraints.insets = insets; constraints.ipadx = ipadx; constraints.ipady = ipady; add(component, constraints); }
private void setDefaultValuesGB() { // This method sets the default values for all GridBagConstraints, // so we don't have to specify them with each addGB(...) gridx = RELATIVE; gridy = RELATIVE; gridwidth = 1; gridheight = 1; fill = NONE; weightx = 0.0; weighty = 0.0; anchor = CENTER; insets = new Insets(0, 0, 0, 0); ipadx = 0; ipady = 0; }
public static void main(final String... args) { SwingUtilities.invokeLater(new Runnable() {
@Override public void run() { JFrame frame = new JFrame("GridBagLayout Example"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(450, 350); frame.setLocationRelativeTo(null); frame.setContentPane(new GridBagLayoutExample2()); frame.setVisible(true); } }); }
} </code=java>