org.geotools.tile.util

Class TileLayer

Object

Layer

DirectLayer

TileLayer

Direct Known Subclasses:

AsyncTileLayer

public class TileLayer
extends DirectLayer

TileLayer is a direct map layer that does the mosaicking work for tiles of a given tile service.

Since:

12

Author:

Ugo Taddei

Field Summary

Fields inherited from class Layer

listenerList, selected, title, userData, visible

Constructor Summary

Constructors

Constructor and Description
TileLayer(TileService service)

Method Summary

Modifier and Type	Method and Description
void	draw(Graphics2D graphics, MapContent map, MapViewport theViewport) Draw layer contents onto screen
ReferencedEnvelope	getBounds() The bounds of the Layer content (if known).
GridCoverage2D	getCoverage()
protected BufferedImage	getTileImage(Tile tile)
protected void	renderTile(Tile tile, Graphics2D g2d, double[] points)
protected void	renderTiles(Collection<Tile> tiles, Graphics2D g2d, ReferencedEnvelope viewportExtent, AffineTransform worldToImageTransform)

Methods inherited from class Layer

addMapLayerListener, connectDataListener, dispose, finalize, fireMapLayerListenerLayerChanged, fireMapLayerListenerLayerDeselected, fireMapLayerListenerLayerHidden, fireMapLayerListenerLayerPreDispose, fireMapLayerListenerLayerSelected, fireMapLayerListenerLayerShown, getFeatureSource, getQuery, getStyle, getTitle, getUserData, isSelected, isVisible, preDispose, removeMapLayerListener, setSelected, setTitle, setVisible, toString

Methods inherited from class Object

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

Constructor Detail

TileLayer

public TileLayer(TileService service)

Method Detail

getCoverage

public GridCoverage2D getCoverage()

getBounds

public ReferencedEnvelope getBounds()

Description copied from class: Layer

The bounds of the Layer content (if known). The bounds can be used to determine if any of the layers content is "on screen" when rendering the map; however often it is expensive to calculate a layers bounds up front so we are allowing this value to be optional.

The returned bounds are a ReferencedEnvelope using the same CoordinateReferenceSystem as the layers contents.

Specified by:

getBounds in class Layer

Returns:

layer bounds, null if unknown

draw

public void draw(Graphics2D graphics,
                 MapContent map,
                 MapViewport theViewport)

Description copied from class: DirectLayer

Draw layer contents onto screen

Specified by:

draw in class DirectLayer

Parameters:

graphics - Graphics to draw into

map - Map being drawn; check map bounds and crs

theViewport - Area to draw the map into; including screen area

renderTiles

protected void renderTiles(Collection<Tile> tiles,
                           Graphics2D g2d,
                           ReferencedEnvelope viewportExtent,
                           AffineTransform worldToImageTransform)

renderTile

protected void renderTile(Tile tile,
                          Graphics2D g2d,
                          double[] points)

getTileImage

protected BufferedImage getTileImage(Tile tile)