| java.lang.Object
 org.gjt.sp.jedit.gui.ExtendedGridLayout
| ExtendedGridLayout | | public class ExtendedGridLayout implements LayoutManager2(Code) | | A layout manager that places components in a rectangular grid
with variable cell sizes that supports colspans and rowspans.
The container is divided into rectangles, and each component is placed
in a rectangular space defined by its colspan and rowspan.
Each row is as large as the largest component in
that row, and each column is as wide as the widest component in
that column.
This behavior is similar to
java.awt.GridLayout
but it supports different row heights and
column widths for each row/column.
For example, the following is a Dialog that lays out ten buttons
exactly the same as in the example of the JavaDoc of
java.awt.GridBagLayout
with the difference of vertical and horizontal gaps that can be configured:
1:import java.awt.Button;
2:import java.awt.Dimension;
3:
4:import javax.swing.JDialog;
5:
6:import org.gjt.sp.jedit.gui.ExtendedGridLayout;
7:import org.gjt.sp.jedit.gui.ExtendedGridLayoutConstraints;
8:
9:import static org.gjt.sp.jedit.gui.ExtendedGridLayoutConstraints.REMAINDER;
10:
11:public class ExampleDialog extends JDialog {
12: public ExampleDialog() {
13: super(null,"Example Dialog",true);
14: setLayout(new ExtendedGridLayout(5,5,new Insets(5,5,5,5)));
15:
16: add(makeButton("Button1"));
17: add(makeButton("Button2"));
18: add(makeButton("Button3"));
19: add(makeButton("Button4"));
20: Button button = makeButton("Button5");
21: add(button,new ExtendedGridLayoutConstraints(1,REMAINDER,1,button));
22: button = makeButton("Button6");
23: add(button,new ExtendedGridLayoutConstraints(2,3,1,button));
24: button = makeButton("Button7");
25: add(button,new ExtendedGridLayoutConstraints(2,button));
26: button = makeButton("Button8");
27: add(button,new ExtendedGridLayoutConstraints(3,1,2,button));
28: button = makeButton("Button9");
29: add(button,new ExtendedGridLayoutConstraints(3,3,1,button));
30: button = makeButton("Button10");
31: add(button,new ExtendedGridLayoutConstraints(4,REMAINDER,1,button));
32:
33: pack();
34: setLocationRelativeTo(null);
35: setVisible(true);
36: }
37:
38: private Button makeButton(String name) {
39: Button button = new Button(name);
40: button.setMaximumSize(new Dimension(Integer.MAX_VALUE,Integer.MAX_VALUE));
41: return button;
42: }
43:}
If you use
REMAINDER as colspan or rowspan then a component takes
up the remaining space in that column or row. Any additional components in
a row are ignored and not displayed. Additional components in a column are
moved rightside. If a rowspan hits a colspan, the colspan ends and the
rowspan takes precedence.
Components for which
isVisible() == false are ignored. Because
of this, components can be replaced "in-place" by adding two components next to
each other, with different
isVisible() values, and toggling the
setVisible() values of both when we wish to swap the currently
visible component with the one that is hidden.
If you want to reserve free space in a row inbetween components,
add a
javax.swing.Box.Filler
to the layout if the free space is in the middle of a row,
or just don't add components if the free space
should be at the end of a row.
If a row is taller, or a column is wider than the
maximumSize of a component,
the component is resized to its maximum size and aligned according to its
alignmentX and
alignmentY values.
One instance of this class can be used to layout multiple
containers at the same time.
author:
Björn "Vampire" Kautler
version:
1.0
See Also: ExtendedGridLayoutConstraints
See Also: java.awt.Component
See Also: javax.swing.Box.Filler |
| Constructor Summary | |
| public | ExtendedGridLayout(int hgap, int vgap, Insets distanceToBorders)
Creates an extended grid layout manager with the specified horizontal
and vertical gap, and the specified distance to the borders
of the parent container. | | public | ExtendedGridLayout()
Creates an extended grid layout manager with zero horizontal
and vertical gap, and zero distance to the borders
of the parent container. |
| ExtendedGridLayout | | public ExtendedGridLayout(int hgap, int vgap, Insets distanceToBorders)(Code) | | Creates an extended grid layout manager with the specified horizontal
and vertical gap, and the specified distance to the borders
of the parent container.
Parameters:
hgap - The horizontal space between two columns ()
Parameters:
vgap - The vertical space between two rows ()
Parameters:
distanceToBorders - The distances to the borders of the parent container
throws:
IllegalArgumentException - if hgap
throws:
IllegalArgumentException - if vgap |
| ExtendedGridLayout | | public ExtendedGridLayout()(Code) | | Creates an extended grid layout manager with zero horizontal
and vertical gap, and zero distance to the borders
of the parent container.
|
| getLayoutAlignmentX | | public float getLayoutAlignmentX(Container container)(Code) | | Returns the alignment along the X axis. This specifies how
the component would like to be aligned relative to other
components. The value should be a number between 0 and 1
where 0 represents alignment along the origin, 1 is aligned
the furthest away from the origin, 0.5 is centered, etc.
Parameters:
container - The container for which the alignment should be returned java.awt.Component.CENTER_ALIGNMENT |
| getLayoutAlignmentY | | public float getLayoutAlignmentY(Container container)(Code) | | Returns the alignment along the Y axis. This specifies how
the component would like to be aligned relative to other
components. The value should be a number between 0 and 1
where 0 represents alignment along the origin, 1 is aligned
the furthest away from the origin, 0.5 is centered, etc.
Parameters:
container - The container for which the alignment should be returned java.awt.Component.CENTER_ALIGNMENT |
| invalidateLayout | | public void invalidateLayout(Container container)(Code) | | Invalidates the layout, indicating that if the layout manager
has cached information it should be discarded.
Parameters:
container - The container for which the cached information should be discarded |
| layoutContainer | | public void layoutContainer(Container parent)(Code) | | Lays out the specified container.
Parameters:
parent - The container to be laid out |
| removeLayoutComponent | | public void removeLayoutComponent(Component component)(Code) | | Removes the specified component from the layout.
Parameters:
component - The component to be removed |
| toString | | public String toString()(Code) | | Returns a string representation of the object. In general, the
toString method returns a string that
"textually represents" this object. The result should
be a concise but informative representation that is easy for a
person to read.
a string representation of the object. |
|
|