com.bbn.openmap.dataAccess.mapTile
Class GreyStandardMapTileFactory

java.lang.Object
  com.bbn.openmap.util.cacheHandler.CacheHandler
      com.bbn.openmap.dataAccess.mapTile.StandardMapTileFactory
          com.bbn.openmap.dataAccess.mapTile.GreyStandardMapTileFactory

All Implemented Interfaces:

MapTileFactory, PropertyConsumer

public class GreyStandardMapTileFactory
extends StandardMapTileFactory

A StandardMapTileFactory that converts the tiles to greyscale for display.

Author:

ddietrick

Field Summary

Fields inherited from class com.bbn.openmap.dataAccess.mapTile.StandardMapTileFactory

CACHE_SIZE_PROPERTY, EMPTY_TILE_HANDLER_PROPERTY, emptyTileHandler, FILE_EXT_PROPERTY, fileExt, lastProj, logger, mapTileLogger, mtcTransform, MTCTRANSFORM_PROPERTY, prefix, repaintCallback, ROOT_DIR_PATH_PROPERTY, ROOT_DIR_PROPERTY, rootDir, rootDirProperty, scales, TILE_PROPERTIES, verbose, ZOOM_LEVEL_INFO_PROPERTY, ZOOM_LEVEL_TILE_SIZE_PROPERTY, zoomLevelInfo, zoomLevelTileSize

Fields inherited from class com.bbn.openmap.util.cacheHandler.CacheHandler

DEFAULT_MAX_CACHE_SIZE, logicalClock, objs

Fields inherited from interface com.bbn.openmap.PropertyConsumer

EditorProperty, initPropertiesProperty, LabelEditorProperty, ScopedEditorProperty

Constructor Summary

GreyStandardMapTileFactory()

GreyStandardMapTileFactory(java.awt.Component layer, java.lang.String rootDir, java.lang.String tileFileExt)

Method Summary

CacheObject	getEmptyTile(java.lang.Object key, int x, int y, int zoomLevel, Projection proj) Overriding the method that creates empty tiles for places with no coverage.
protected java.awt.image.BufferedImage	preprocessImage(java.awt.Image origImage, int imageWidth, int imageHeight) Callback method that converts tiles to greyscale.

Methods inherited from class com.bbn.openmap.dataAccess.mapTile.StandardMapTileFactory

configureFromProperties, createOMGraphicFromBufferedImage, get, getEmptyTileHandler, getFileExt, getFromCache, getMtcTransform, getProperties, getPropertyInfo, getPropertyPrefix, getRepaintCallback, getRootDir, getTileMatchingProjectionType, getTileNotMatchingProjectionType, getTiles, getTiles, getTiles, getTiles, getZoomLevelForProj, getZoomLevelInfo, load, load, reset, setEmptyTileHandler, setFileExt, setMtcTransform, setProperties, setProperties, setPropertyPrefix, setRepaintCallback, setRootDir, setZoomLevelInfo

Methods inherited from class com.bbn.openmap.util.cacheHandler.CacheHandler

clear, get, getCacheSize, listIterator, replaceLeastUsed, resetCache, resetCache, searchCache

Methods inherited from class java.lang.Object

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

Constructor Detail

GreyStandardMapTileFactory

public GreyStandardMapTileFactory()

GreyStandardMapTileFactory

public GreyStandardMapTileFactory(java.awt.Component layer,
                                  java.lang.String rootDir,
                                  java.lang.String tileFileExt)

Method Detail

getEmptyTile

public CacheObject getEmptyTile(java.lang.Object key,
                                int x,
                                int y,
                                int zoomLevel,
                                Projection proj)

Overriding the method that creates empty tiles for places with no coverage. We need to set the no-coverage attributes for the EmptyTileHandler (if it's a SimpleEmptyTileHandler) to null, so it doesn't create empty tiles when it's beyond the coverage zoom level limit. Those tiles are normally returned as clear, but in the conversion to greyscale they turn black.

Overrides:

getEmptyTile in class StandardMapTileFactory

Parameters:

key - the cache key for this object

x - the uv x coordinate of the tile

y - the uv y coordinate of the tile

zoomLevel - the zoom level for the tile

proj - the projection being used for the map.

Returns:

CacheObject, or null if the empty tile should be blank.

preprocessImage

protected java.awt.image.BufferedImage preprocessImage(java.awt.Image origImage,
                                                       int imageWidth,
                                                       int imageHeight)
                                                throws java.lang.InterruptedException

Callback method that converts tiles to greyscale.

Overrides:

preprocessImage in class StandardMapTileFactory

Parameters:

origImage - Any java Image

imageWidth - pixel width

imageHeight - pixel height

Returns:

BufferedImage with any changes necessary.

Throws:

java.lang.InterruptedException