java.awt
Class GridLayout
java.lang.Object
|
+--java.awt.GridLayout
All Implemented Interfaces:
LayoutManager, Serializable
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.
Authors:- Tom Tromey <tromey@redhat.com>
- Aaron M. Renn (arenn@urbanophile.com)
GridLayout
public GridLayout()
Create a new GridLayout
with one row and any number
of columns. Both gaps are set to 0.
GridLayout
public GridLayout(int rows, int cols)
Create a new GridLayout
with 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.
Parameters:
Throws:
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.
Parameters:
Throws:
addLayoutComponent
public void addLayoutComponent(java.lang.String name, java.awt.Component comp)
Add a new component to the layout. This particular implementation
does nothing.
Parameters:
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(java.awt.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.
Parameters:
minimumLayoutSize
public Dimension minimumLayoutSize(java.awt.Container cont)
Get the minimum layout size of the container.
Parameters:
preferredLayoutSize
public Dimension preferredLayoutSize(java.awt.Container cont)
Get the preferred layout size of the container.
Parameters:
removeLayoutComponent
public void removeLayoutComponent(java.awt.Component comp)
Remove the indicated component from this layout manager.
This particular implementation does nothing.
Parameters:
setColumns
public void setColumns(int newCols)
Set the number of columns.
Parameters:
Throws:
IllegalArgumentException
- If the number of columns is
negative, or if the number of columns is zero and the number
of rows is already 0.
setHgap
public void setHgap(int hgap)
Set the horizontal gap
Parameters:
Throws:
setRows
public void setRows(int newRows)
Set the number of rows
Parameters:
Throws:
IllegalArgumentException
- If the number of rows is
negative, or if the number of rows is zero and the number
of columns is already 0.
setVgap
public void setVgap(int vgap)
Set the vertical gap.
Parameters:
Throws:
toString
public String toString()
Return String description of this object.