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java.awt
Class GridLayout
java.lang.Objectjava.awt.GridLayout
- All Implemented Interfaces:
- LayoutManager, java.io.Serializable
- public class GridLayout
- extends java.lang.Object
- implements LayoutManager, java.io.Serializable
- extends java.lang.Object
This class implements a grid-based layout scheme. Components are all given the same size and are laid out from left to right and top to bottom. A GridLayout is configured with a number of rows and a number of columns. If both are specified, then the number of columns is ignored and is derived from the number of rows and the total number of components. If either is zero then that dimension is computed based on the actual size of the container. An exception is thrown if an attempt is made to set both the number of rows and the number of columns to 0. This class also supports horizontal and vertical gaps; these are used as spacing between cells.
| Field Summary | |
private int |
cols
|
private int |
hgap
|
private int |
rows
|
(package private) static long |
serialVersionUID
|
private int |
vgap
|
| Constructor Summary | |
GridLayout()
Create a new GridLayout with one row and any number
of columns. |
|
GridLayout(int rows,
int cols)
Create a new GridLayout with the specified number
of rows and columns. |
|
GridLayout(int rows,
int cols,
int hgap,
int vgap)
Create a new GridLayout with the specified number of rows and columns and the specified gaps. |
|
| Method Summary | |
void |
addLayoutComponent(java.lang.String name,
Component comp)
Add a new component to the layout. |
int |
getColumns()
Return the number of columns in this layout. |
int |
getHgap()
Return the horizontal gap. |
int |
getRows()
Return the number of rows in this layout. |
private Dimension |
getSize(Container parent,
boolean is_min)
|
int |
getVgap()
Return the vertical gap. |
void |
layoutContainer(Container parent)
Lay out the container's components based on current settings. |
Dimension |
minimumLayoutSize(Container cont)
Get the minimum layout size of the container. |
Dimension |
preferredLayoutSize(Container cont)
Get the preferred layout size of the container. |
void |
removeLayoutComponent(Component comp)
Remove the indicated component from this layout manager. |
void |
setColumns(int newCols)
Set the number of columns. |
void |
setHgap(int hgap)
Set the horizontal gap |
void |
setRows(int newRows)
Set the number of rows |
void |
setVgap(int vgap)
Set the vertical gap. |
java.lang.String |
toString()
Return String description of this object. |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
| Field Detail |
serialVersionUID
static final long serialVersionUID
- See Also:
- Constant Field Values
cols
private int cols
rows
private int rows
hgap
private int hgap
vgap
private int vgap
| Constructor Detail |
GridLayout
public GridLayout()
- Create a new
GridLayoutwith one row and any number of columns. Both gaps are set to 0.
GridLayout
public GridLayout(int rows,
int cols)
- Create a new
GridLayoutwith the specified number of rows and columns. Both gaps are set to 0. Note that the row and column settings cannot both be zero. If both the row and column values are non-zero, the rows value takes precedence.
GridLayout
public GridLayout(int rows,
int cols,
int hgap,
int vgap)
- Create a new GridLayout with the specified number of rows and
columns and the specified gaps.
Note that the row and column settings cannot both be
zero. If both the row and column values are non-zero, the rows value
takes precedence.
| Method Detail |
addLayoutComponent
public void addLayoutComponent(java.lang.String name, Component comp)
- Add a new component to the layout. This particular implementation
does nothing.
- Specified by:
addLayoutComponentin interfaceLayoutManager
getColumns
public int getColumns()
- Return the number of columns in this layout.
getHgap
public int getHgap()
- Return the horizontal gap.
getRows
public int getRows()
- Return the number of rows in this layout.
getVgap
public int getVgap()
- Return the vertical gap.
layoutContainer
public void layoutContainer(Container parent)
- Lay out the container's components based on current settings.
The free space in the container is divided evenly into the specified
number of rows and columns in this object.
- Specified by:
layoutContainerin interfaceLayoutManager
minimumLayoutSize
public Dimension minimumLayoutSize(Container cont)
- Get the minimum layout size of the container.
- Specified by:
minimumLayoutSizein interfaceLayoutManager
preferredLayoutSize
public Dimension preferredLayoutSize(Container cont)
- Get the preferred layout size of the container.
- Specified by:
preferredLayoutSizein interfaceLayoutManager
removeLayoutComponent
public void removeLayoutComponent(Component comp)
- Remove the indicated component from this layout manager.
This particular implementation does nothing.
- Specified by:
removeLayoutComponentin interfaceLayoutManager
setColumns
public void setColumns(int newCols)
- Set the number of columns.
setHgap
public void setHgap(int hgap)
- Set the horizontal gap
setRows
public void setRows(int newRows)
- Set the number of rows
setVgap
public void setVgap(int vgap)
- Set the vertical gap.
toString
public java.lang.String toString()
- Return String description of this object.
getSize
private Dimension getSize(Container parent, boolean is_min)
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DETAIL: FIELD | CONSTR | METHOD | ||||||||