Package cz.vutbr.fit.layout.impl

Class DefaultGridTopology

java.lang.Object

cz.vutbr.fit.layout.impl.AreaListGridTopology

cz.vutbr.fit.layout.impl.DefaultGridTopology

All Implemented Interfaces:

AreaTopology

public class DefaultGridTopology
extends AreaListGridTopology

The default topology that creates a grid of child areas within a parent area.

Author:

burgetr

Constructor Summary

Constructors

Constructor	Description
DefaultGridTopology(Area area)

Method Summary

Modifier and Type	Method	Description
protected Rectangular	computeAreaBounds()	Obtains the absolute bounds of the parent area where the child areas are positioned.
void	drawLayout(OutputDisplay disp)	Graphically displays the topology on a graphical output device.
ContentRect	findAreaAt(int x, int y)	Finds an area at the specified position in the grid.
Area	getArea()
Rectangular	getPosition(ContentRect area)	Obtains the position of the given area within this topology.
boolean	isDirty()
void	setAreas(List<ContentRect> areas)
void	setDirty(boolean dirty)
Rectangular	toPixelPosition(Rectangular gp)	Translates the bounds in the topology to pixel bounds.
Rectangular	toPixelPositionAbsolute(Rectangular gp)	Translates the bounds in the topology to absolute pixel bounds.
void	update()	Recomputes the topology.

Methods inherited from class cz.vutbr.fit.layout.impl.AreaListGridTopology

findAllAreasAt, findAllAreasIntersecting, getAreas, getPositionMap, getTopologyHeight, getTopologyPosition, getTopologyWidth, setPosition, toTopologyX, toTopologyY

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultGridTopology

public DefaultGridTopology(Area area)

Method Detail

getArea

public Area getArea()

isDirty

public boolean isDirty()

setDirty

public void setDirty(boolean dirty)

setAreas

public void setAreas(List<ContentRect> areas)

Overrides:

setAreas in class AreaListGridTopology

getPosition

public Rectangular getPosition(ContentRect area)

Description copied from interface: AreaTopology

Obtains the position of the given area within this topology.

Specified by:

getPosition in interface AreaTopology

Overrides:

getPosition in class AreaListGridTopology

Parameters:

area - 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.

findAreaAt

public ContentRect findAreaAt(int x,
                              int y)

Description copied from interface: AreaTopology

Finds an area at the specified position in the grid. If there are multiple areas sharing the same position, the first of them is returned in a non-deterministic way. Therefore, this method should be used for topologies that do not allow overlapping areas.

Specified by:

findAreaAt in interface AreaTopology

Overrides:

findAreaAt in class AreaListGridTopology

Parameters:

x - the x coordinate of the grid cell

y - the y coordinate of the grid cell

Returns:

the area at the specified position or null when there is no such area

toPixelPosition

public Rectangular toPixelPosition(Rectangular gp)

Description copied from interface: AreaTopology

Translates the bounds in the topology to pixel bounds.

Specified by:

toPixelPosition in interface AreaTopology

Overrides:

toPixelPosition in class AreaListGridTopology

Parameters:

gp - the position within the topology

Returns:

the pixle position

toPixelPositionAbsolute

public Rectangular toPixelPositionAbsolute(Rectangular gp)

Description copied from interface: AreaTopology

Translates the bounds in the topology to absolute pixel bounds.

Specified by:

toPixelPositionAbsolute in interface AreaTopology

Overrides:

toPixelPositionAbsolute in class AreaListGridTopology

Parameters:

gp - the position within the topology

Returns:

the pixle position

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

Overrides:

drawLayout in class AreaListGridTopology

Parameters:

disp - the ouptut display to be used

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

Overrides:

update in class AreaListGridTopology

computeAreaBounds

protected Rectangular computeAreaBounds()

Description copied from class: AreaListGridTopology

Obtains the absolute bounds of the parent area where the child areas are positioned.

Overrides:

computeAreaBounds in class AreaListGridTopology

Returns:

The absloute area bounds in pixels.