org.jhotdraw.draw.action
Class VerticalGridLayout

java.lang.Object
  org.jhotdraw.draw.action.VerticalGridLayout

All Implemented Interfaces:

java.awt.LayoutManager, java.io.Serializable

public class VerticalGridLayout
extends java.lang.Object
implements java.awt.LayoutManager, java.io.Serializable

VerticalGridLayout.

A grid layout which lays out columns first.

Version:

1.0 27. November 2003 Created.

Author:

Werner Randelshofer

See Also:

Serialized Form

Constructor Summary

VerticalGridLayout()
Creates a grid layout with a default of one column per component, in a single row.

VerticalGridLayout(int rows, int cols)
Creates a grid layout with the specified number of rows and columns.

VerticalGridLayout(int rows, int cols, boolean isVertical)

VerticalGridLayout(int rows, int cols, int hgap, int vgap)

VerticalGridLayout(int rows, int cols, int hgap, int vgap, boolean isVertical)
Creates a grid layout with the specified number of rows and columns.

Method Summary

void	addLayoutComponent(java.lang.String name, java.awt.Component comp) Adds the specified component with the specified name to the layout.
int	getColumns() Gets the number of columns in this layout.
int	getHgap() Gets the horizontal gap between components.
int	getRows() Gets the number of rows in this layout.
int	getVgap() Gets the vertical gap between components.
boolean	isVertical()
void	layoutContainer(java.awt.Container parent) Lays out the specified container using this layout.
java.awt.Dimension	minimumLayoutSize(java.awt.Container parent) Determines the minimum size of the container argument using this grid layout.
java.awt.Dimension	preferredLayoutSize(java.awt.Container parent) Determines the preferred size of the container argument using this grid layout.
void	removeLayoutComponent(java.awt.Component comp) Removes the specified component from the layout.
void	setColumns(int cols) Sets the number of columns in this layout to the specified value.
void	setHgap(int hgap) Sets the horizontal gap between components to the specified value.
void	setRows(int rows) Sets the number of rows in this layout to the specified value.
void	setVertical(boolean b)
void	setVgap(int vgap) Sets the vertical gap between components to the specified value.
java.lang.String	toString() Returns the string representation of this grid layout's values.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

VerticalGridLayout

public VerticalGridLayout()

Creates a grid layout with a default of one column per component, in a single row.

VerticalGridLayout

public VerticalGridLayout(int rows,
                          int cols)

Creates a grid layout with the specified number of rows and columns. All components in the layout are given equal size.

One, but not both, of rows and cols can be zero, which means that any number of objects can be placed in a row or in a column.

Parameters:

rows - the rows, with the value zero meaning any number of rows.

cols - the columns, with the value zero meaning any number of columns.

VerticalGridLayout

public VerticalGridLayout(int rows,
                          int cols,
                          boolean isVertical)

VerticalGridLayout

public VerticalGridLayout(int rows,
                          int cols,
                          int hgap,
                          int vgap)

VerticalGridLayout

public VerticalGridLayout(int rows,
                          int cols,
                          int hgap,
                          int vgap,
                          boolean isVertical)

Creates a grid layout with the specified number of rows and columns. All components in the layout are given equal size.

In addition, the horizontal and vertical gaps are set to the specified values. Horizontal gaps are placed at the left and right edges, and between each of the columns. Vertical gaps are placed at the top and bottom edges, and between each of the rows.

One, but not both, of rows and cols can be zero, which means that any number of objects can be placed in a row or in a column.

All VerticalGridLayout constructors defer to this one.

Parameters:

rows - the rows, with the value zero meaning any number of rows

cols - the columns, with the value zero meaning any number of columns

hgap - the horizontal gap

vgap - the vertical gap

Throws:

java.lang.IllegalArgumentException - if the value of both rows and cols is set to zero

Method Detail

getRows

public int getRows()

Gets the number of rows in this layout.

Returns:

the number of rows in this layout

Since:

JDK1.1

setRows

public void setRows(int rows)

Sets the number of rows in this layout to the specified value.

Parameters:

rows - the number of rows in this layout

Throws:

java.lang.IllegalArgumentException - if the value of both rows and cols is set to zero

Since:

JDK1.1

setVertical

public void setVertical(boolean b)

isVertical

public boolean isVertical()

getColumns

public int getColumns()

Gets the number of columns in this layout.

Returns:

the number of columns in this layout

Since:

JDK1.1

setColumns

public void setColumns(int cols)

Sets the number of columns in this layout to the specified value. Setting the number of columns has no affect on the layout if the number of rows specified by a constructor or by the setRows method is non-zero. In that case, the number of columns displayed in the layout is determined by the total number of components and the number of rows specified.

Parameters:

cols - the number of columns in this layout

Throws:

java.lang.IllegalArgumentException - if the value of both rows and cols is set to zero

Since:

JDK1.1

getHgap

public int getHgap()

Gets the horizontal gap between components.

Returns:

the horizontal gap between components

Since:

JDK1.1

setHgap

public void setHgap(int hgap)

Sets the horizontal gap between components to the specified value.

Parameters:

hgap - the horizontal gap between components

Since:

JDK1.1

getVgap

public int getVgap()

Gets the vertical gap between components.

Returns:

the vertical gap between components

Since:

JDK1.1

setVgap

public void setVgap(int vgap)

Sets the vertical gap between components to the specified value.

Parameters:

vgap - the vertical gap between components

Since:

JDK1.1

addLayoutComponent

public void addLayoutComponent(java.lang.String name,
                               java.awt.Component comp)

Adds the specified component with the specified name to the layout.

Specified by:

addLayoutComponent in interface java.awt.LayoutManager

Parameters:

name - the name of the component

comp - the component to be added

removeLayoutComponent

public void removeLayoutComponent(java.awt.Component comp)

Removes the specified component from the layout.

Specified by:

removeLayoutComponent in interface java.awt.LayoutManager

Parameters:

comp - the component to be removed

preferredLayoutSize

public java.awt.Dimension preferredLayoutSize(java.awt.Container parent)

Determines the preferred size of the container argument using this grid layout.

The preferred width of a grid layout is the largest preferred width of any of the components in the container times the number of columns, plus the horizontal padding times the number of columns plus one, plus the left and right insets of the target container.

The preferred height of a grid layout is the largest preferred height of any of the components in the container times the number of rows, plus the vertical padding times the number of rows plus one, plus the top and bottom insets of the target container.

Specified by:

preferredLayoutSize in interface java.awt.LayoutManager

Parameters:

parent - the container in which to do the layout

Returns:

the preferred dimensions to lay out the subcomponents of the specified container

minimumLayoutSize

public java.awt.Dimension minimumLayoutSize(java.awt.Container parent)

Determines the minimum size of the container argument using this grid layout.

The minimum width of a grid layout is the largest minimum width of any of the components in the container times the number of columns, plus the horizontal padding times the number of columns plus one, plus the left and right insets of the target container.

The minimum height of a grid layout is the largest minimum height of any of the components in the container times the number of rows, plus the vertical padding times the number of rows plus one, plus the top and bottom insets of the target container.

Specified by:

minimumLayoutSize in interface java.awt.LayoutManager

Parameters:

parent - the container in which to do the layout

Returns:

the minimum dimensions needed to lay out the subcomponents of the specified container

layoutContainer

public void layoutContainer(java.awt.Container parent)

Lays out the specified container using this layout.

This method reshapes the components in the specified target container in order to satisfy the constraints of the VerticalGridLayout object.

The grid layout manager determines the size of individual components by dividing the free space in the container into equal-sized portions according to the number of rows and columns in the layout. The container's free space equals the container's size minus any insets and any specified horizontal or vertical gap. All components in a grid layout are given the same size.

Specified by:

layoutContainer in interface java.awt.LayoutManager

Parameters:

parent - the container in which to do the layout

See Also:

Container, Container.doLayout()

toString

public java.lang.String toString()

Returns the string representation of this grid layout's values.

Overrides:

toString in class java.lang.Object

Returns:

a string representation of this grid layout