Application: gvSIG desktop

package org.gvsig.raster.tilecache.provider;

import java.io.IOException;

import java.nio.Buffer;

import org.gvsig.raster.lib.buffer.api.Band;

import org.gvsig.raster.lib.buffer.api.BandInfo;

import org.gvsig.raster.lib.buffer.api.BandTileManager;

import org.gvsig.raster.lib.buffer.api.TileStruct;

import org.gvsig.tools.dispose.impl.AbstractDisposable;

import org.gvsig.tools.exception.BaseException;

/**

 * Band Page Managaer for a Memory Image

 * @author dmartinezizquierdo

 *

 */

public class TileCacheBandPageManager extends AbstractDisposable implements BandTileManager{

    private TileStructImage tileStructImage;

    private int bandNumber;

    private int zoomLevel;

    /**

     * @param tileStructImage

     * @param zoomLevel

     * @param band

     */

    public TileCacheBandPageManager(TileStructImage tileStructImage, int zoomLevel, int band){

        this.tileStructImage=tileStructImage;

        this.bandNumber=band;

        this.zoomLevel=zoomLevel;

    }

    @Override

    public boolean isSupportedSave() {

        return false;

    }

    @Override

    public Band load(int row, int col, int dataType) throws IOException {

        int tileRow = (int) row / getRowsPerTile();

        int tileCol = (int) col / getColumnsPerTile();

        return tileStructImage.fetchTile(bandNumber, this.zoomLevel, tileRow, tileCol);

    }

    @Override

    public BandInfo getBandInfo() {

        //FIXME

        return null;

    }

    @Override

    public void save(Buffer buffer, int row, int rows, int col, int cols,

        int dataType) throws IOException {

        throw new UnsupportedOperationException();

    }

    @Override

    public int getRowsPerTile() {

        return tileStructImage.getRowsPerTile();

    }

    @Override

    public int getColumnsPerTile() {

        return tileStructImage.getColumnsPerTile();

    }

    @Override

    public TileStruct getTileStruct() {

        return tileStructImage.getTileStruct();

    }

    @Override

    protected void doDispose() throws BaseException {

        this.tileStructImage = null;

    }

}