Application: gvSIG desktop

/*

 * Cresques Mapping Suite. Graphic Library for constructing mapping applications.

 *

 * Copyright (C) 2004-5.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 * cresques@gmail.com

 */

package org.cresques.io;

import org.cresques.px.Extent;

import java.io.BufferedInputStream;

import java.io.IOException;

import java.io.InputStream;

import java.net.MalformedURLException;

import java.net.URL;

/**

 * Consulta para un servidor de mapas.

 * @author Luis W. Sevilla (sevilla_lui@gva.es)

 */

public abstract class MapServerClient implements Extent.Has {

    public static final int MAXBUFSIZE = 1024 * 1024;

    BufferedInputStream bufIn = null;

    byte[] buffer;

    int bufPos;

    String serverName;

    protected String urlBase = null;

    protected long xMin;

    protected long xMax;

    protected long yMin;

    protected long yMax;

    protected int ancho;

    protected int alto;

    public boolean echo = false;

    private Extent extent = null;

    private int maxViewWidth = 1500;

    private int maxViewHeight = 1500;

    private float minTimeBetweenQuerys = 0;

    public MapServerClient(String serverName) {

        this.serverName = serverName;

    }

    public String getName() {

        return serverName;

    }

    public byte[] getBuffer() {

        return buffer;

    }

    public void setView(long xMin, long yMin, long xMax, long yMax) {

        this.xMin = xMin;

        this.xMax = xMax;

        this.yMax = yMax;

        this.yMin = yMin;

    }

    public void setViewSize(int w, int h) {

        ancho = w;

        alto = h;

    }

    /**

     * Pone el tama?o m?ximo de la vista. Solicitando una vista m?s

     * grande que esta al servidor dar? error (y no im?genes)  :-(

     * @param w        ancho

     * @param h alto

     */

    public void setMaxViewSize(int w, int h) {

        maxViewWidth = w;

        maxViewHeight = h;

    }

    public Extent getViewExtent() {

        return new Extent(xMin, yMax, xMax, yMin);

    }

    public void setExtent(Extent e) {

        extent = e;

    }

    public Extent getExtent() {

        return extent;

    }

    abstract public String getUrl();

    public void get() throws Exception {

        get(getUrl());

    }

    public void get(String address) throws Exception {

        bufPos = 0;

        buffer = new byte[MAXBUFSIZE];

        try {

            // Check to see that a command parameter was entered

            // Create an URL instance

            URL url = new URL(address);

            // Get an input stream for reading

            InputStream in = url.openStream();

            // Create a buffered input stream for efficency

            bufIn = new BufferedInputStream(in);

            // Repeat until end of file

            int data;

            for (bufPos = 0; (data = bufIn.read()) != -1; bufPos++) {

                buffer[bufPos] = (byte) data;

                if (echo) {

                    System.out.println(data);

                }

            }

            byte[] buf = new byte[bufPos];

            for (int i = 0; i < bufPos; i++)

                buf[i] = buffer[i];

            buffer = buf;

            System.out.println(bufPos + " bytes leidos.");

            bufIn.close();

            in.close();

        } catch (MalformedURLException mue) {

            System.err.println("Invalid URL");

        } catch (IOException ioe) {

            System.err.println("I/O Error - " + ioe);

        }

    }

}