org.fit.layout.impl

Class DefaultGridTopology

java.lang.Object

org.fit.layout.impl.DefaultGridTopology

All Implemented Interfaces:

AreaTopology

public class DefaultGridTopology
extends Object
implements AreaTopology

The default topology that uses the internal grid of areas internally maintained by the DefaultArea implementation.

Author:

burgetr

Constructor Summary

Constructors

Constructor and Description
DefaultGridTopology(DefaultArea area)

Method Summary

Modifier and Type	Method and Description
void	drawLayout(OutputDisplay disp) Graphically displays the topology on a graphical output device.
Area	getArea()
int	getHeight() Obtains the height the area occupies.
int	getMaxIndent()
int	getMinIndent()
Area	getNextOnLine()
Rectangular	getPosition() Obtains the position of the area in its parent area.
Rectangular	getPosition(Area a) Obtains the position of the given area within this topology.
Area	getPreviousOnLine()
int	getTopologyHeight() Obtains the total height of the topology used for placing the child areas within this area.
Rectangular	getTopologyPosition() Obtains the absolute position of the whole topology within the page.
int	getTopologyWidth() Obtains the total width of the topology used for placing the child areas within this area.
int	getWidth() Obtains the width the area occupies.
void	setPosition(Area a, Rectangular gp) Sets the position of the given area in this topology.
void	update() Recomputes the topology.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultGridTopology

public DefaultGridTopology(DefaultArea area)

Method Detail

getArea

public Area getArea()

update

public void update()

Description copied from interface: AreaTopology

Recomputes the topology. This should be used when the underlying areas have changed (some areas have been added, removed or resized).

Specified by:

update in interface AreaTopology

getTopologyWidth

public int getTopologyWidth()

Description copied from interface: AreaTopology

Obtains the total width of the topology used for placing the child areas within this area.

Specified by:

getTopologyWidth in interface AreaTopology

Returns:

the topology width; the units depend on the used topology

getTopologyHeight

public int getTopologyHeight()

Description copied from interface: AreaTopology

Obtains the total height of the topology used for placing the child areas within this area.

Specified by:

getTopologyHeight in interface AreaTopology

Returns:

the topology height; the units depend on the topology

getTopologyPosition

public Rectangular getTopologyPosition()

Description copied from interface: AreaTopology

Obtains the absolute position of the whole topology within the page.

Specified by:

getTopologyPosition in interface AreaTopology

Returns:

the absolute position of this topology

getPosition

public Rectangular getPosition(Area a)

Description copied from interface: AreaTopology

Obtains the position of the given area within this topology.

Specified by:

getPosition in interface AreaTopology

Parameters:

a - The area whose position we want to obtain.

Returns:

The area position in this topology or null when the area position is not described by this topology.

setPosition

public void setPosition(Area a,
                        Rectangular gp)

Description copied from interface: AreaTopology

Sets the position of the given area in this topology.

Specified by:

setPosition in interface AreaTopology

Parameters:

a - The area whose position we want to set.

gp - The new position.

getWidth

public int getWidth()

Description copied from interface: AreaTopology

Obtains the width the area occupies.

Specified by:

getWidth in interface AreaTopology

Returns:

the width of the area

getHeight

public int getHeight()

Description copied from interface: AreaTopology

Obtains the height the area occupies.

Specified by:

getHeight in interface AreaTopology

Returns:

the height of the area

getPosition

public Rectangular getPosition()

Description copied from interface: AreaTopology

Obtains the position of the area in its parent area.

Specified by:

getPosition in interface AreaTopology

Returns:

the position of the area

getPreviousOnLine

public Area getPreviousOnLine()

Specified by:

getPreviousOnLine in interface AreaTopology

getNextOnLine

public Area getNextOnLine()

Specified by:

getNextOnLine in interface AreaTopology

getMinIndent

public int getMinIndent()

Specified by:

getMinIndent in interface AreaTopology

getMaxIndent

public int getMaxIndent()

Specified by:

getMaxIndent in interface AreaTopology

drawLayout

public void drawLayout(OutputDisplay disp)

Description copied from interface: AreaTopology

Graphically displays the topology on a graphical output device.

Specified by:

drawLayout in interface AreaTopology

Parameters:

disp - the ouptut display to be used