Application: gvSIG desktop

		PluginServices.getIconTheme().registerDefault(

				"tfwload-icon",

				this.getClass().getClassLoader().getResource("images/load.png")

			);

		PluginServices.getIconTheme().registerDefault(

				"centerraster-icon",

				this.getClass().getClassLoader().getResource("images/center_image.png")

			);

import java.awt.geom.Rectangle2D;

import java.io.BufferedReader;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.InputStreamReader;

import javax.swing.JFileChooser;

import org.gvsig.fmap.raster.layers.FLyrRasterSE;

import org.gvsig.raster.datastruct.Extent;

import com.iver.cit.gvsig.addlayer.fileopen.FileOpenWizard;

import com.iver.cit.gvsig.fmap.ViewPort;

		//Cargar la georreferenciaci?n desde tfw

		if(e.getSource() == panel.getTfwLoad()) {

			JFileChooser chooser = new JFileChooser(FileOpenWizard.getLastPath());

			chooser.setDialogTitle(PluginServices.getText(this, "seleccionar_fichero"));

			chooser.addChoosableFileFilter(new GeorreferencingFileFilter("tfw"));

			chooser.addChoosableFileFilter(new GeorreferencingFileFilter("wld"));

			int returnVal = chooser.showOpenDialog(panel);

			if (returnVal == JFileChooser.APPROVE_OPTION) {

				String fName = chooser.getSelectedFile().toString();

				at = readTfw(fName);

			}

		}

		//Centrar el raster en la vista

		if(e.getSource() == panel.getCenterToView()) {

			Extent extentView = calcCenterExtent(panel.getViewPort());

			double x = extentView.minX();

			double y = extentView.maxY();

			double psX = extentView.width() / ((FLyrRasterSE)panel.getLayer()).getPxWidth();

			double psY = -(extentView.height() / ((FLyrRasterSE)panel.getLayer()).getPxHeight());

			at = new AffineTransform(psX, 0, 0, psY, x, y);

			panel.setModify(true);

		}

	/**

	 * Centra el raster asociado a la capa en al extent del viewport pasado 

	 * por par?metro. 

	 * @param vp ViewPort

	 * @return	Extent para la imagen

	 */

	private Extent calcCenterExtent(ViewPort vp) {

		Extent tempExtent = null;

		double widthPxImg, heightPxImg;

		widthPxImg = ((FLyrRasterSE)panel.getLayer()).getPxWidth();

		heightPxImg = ((FLyrRasterSE)panel.getLayer()).getPxHeight();

		if(vp == null || vp.getAdjustedExtent() == null) {

			vp = new ViewPort(null);

			Rectangle2D r2d = new Rectangle2D.Double(0, 0, widthPxImg, heightPxImg);

			vp.setExtent(r2d);

			tempExtent = new Extent(0, 0, widthPxImg, heightPxImg);

		} else

			tempExtent = new Extent(vp.getAdjustedExtent());

		double ulX = 0D, ulY = 0D, lrX = 0D, lrY = 0D;

		if(widthPxImg > heightPxImg) {

			double widthView = tempExtent.maxX() - tempExtent.minX();

			ulX = tempExtent.minX() + (widthView / 4);

			lrX = ulX + (widthView / 2);

			double newAlto = ((heightPxImg * (widthView / 2)) / widthPxImg);

			double centroY = tempExtent.minY()+((tempExtent.maxY() - tempExtent.minY())/2);

			ulY = centroY - (newAlto / 2);

			lrY = centroY + (newAlto / 2);

		} else {

			double heightView = tempExtent.maxY() - tempExtent.minY();

			ulY = tempExtent.minY() + (heightView / 4);

			lrY = ulY + (heightView / 2);

			double newAncho = ((widthPxImg * (heightView / 2)) / heightPxImg);

			double centroX = tempExtent.minX()+((tempExtent.maxX() - tempExtent.minX())/2);

			ulX = centroX - (newAncho / 2);

			lrX = centroX + (newAncho / 2);

		}

		return new Extent(ulX, ulY, lrX, lrY);

	}

	/**

	 * Lee las coordenadas de un fichero de tfw con una transformaci?n y 

	 * devuelve la clase AffineTransform con dicha transformaci?n. Esta llamada gestiona los

	 * errores producidos actuando en consecuencia. Muestra los mensajes al usuario y retorna

	 * null en caso de tener problemas.

	 * @param fName Nombre del fichero tfw

	 * @return AffineTransform

	 */

	private AffineTransform readTfw(String fName) {

		BufferedReader inGrf = null;

		double[] result = new double[6];

		try {

			inGrf = new BufferedReader(new InputStreamReader(new FileInputStream(fName)));

			String str = inGrf.readLine();

			int count = 0;

			while(str != null && count < 6) {

				try {

					Double value =  new Double(str);

					result[count] = value.doubleValue();

				} catch (NumberFormatException ex) {

					RasterToolsUtil.messageBoxError(PluginServices.getText(this, "error_file_not_valid"), panel, ex);

					return null;

				}

				str = inGrf.readLine();

				count ++;

			}

		} catch (FileNotFoundException e) {

			RasterToolsUtil.messageBoxError(PluginServices.getText(this, "error_file_not_found"), panel, e);

			return null;

		} catch (IOException ex) {

			RasterToolsUtil.messageBoxError(PluginServices.getText(this, "error_lectura"), panel, ex);

			return null;

		}

		return new AffineTransform(result[0], result[1], result[2], result[3], result[4], result[5]);

	}

	/**

	 * Filtro para el selector de formatos de georreferenciaci?n

	 * @author Nacho Brodin (nachobrodin@gmail.com)

	 */

	class GeorreferencingFileFilter extends javax.swing.filechooser.FileFilter {

		private String				filter;

		public GeorreferencingFileFilter(String fil) {

			this.filter = fil;

		}

		public boolean accept(File f) {

			return f.isDirectory() || f.getName().toLowerCase().endsWith("." + filter);

		}

		public String getDescription() {

			return "." + filter;

		}

	}

import com.iver.cit.gvsig.fmap.ViewPort;

	private int               heightWindow     = 155;

	public GeoLocationDialog(FLyrRasterSE lyr, ViewPort vp) {

		getGeoLocationPanel().setParams(lyr, vp);

	private void loadLayer(ViewPort vp) {

				getGeoLocationPanel().setParams(((FLyrRasterSE)actives[i]), vp);

		loadLayer(mapCtrl.getViewPort());

import com.iver.cit.gvsig.fmap.ViewPort;

	private JButton                    tfwload = null;

	private JButton                    center = null;

	private ViewPort                   vp = null;

		ImageIcon tfwLoadIcon = null;

		ImageIcon centerRasterIcon = null;

			centerRasterIcon = PluginServices.getIconTheme().get("centerraster-icon");

			tfwLoadIcon = PluginServices.getIconTheme().get("tfwload-icon");

		tfwload = new JButton(tfwLoadIcon);

		center = new JButton(centerRasterIcon);

		center.setToolTipText(PluginServices.getText(this,"center_raster"));

		tfwload.setToolTipText(PluginServices.getText(this,"tfw_load"));

		center.setPreferredSize(new Dimension(28,24));

		tfwload.setPreferredSize(new Dimension(28,24));

		tfwload.addActionListener(listener);

		center.addActionListener(listener);

		center.setEnabled(true);

		tfwload.setEnabled(true);

		JPanel smallButtons = new JPanel();

		smallButtons.setLayout(new GridBagLayout());

		JPanel applyButton = new JPanel();

		applyButton.setLayout(new GridBagLayout());

		gbc.gridx = 0;

		gbc.gridy = 0;

		gbc.insets = new java.awt.Insets(1, 0, 0, 2);

		smallButtons.add(center, gbc);

		gbc.gridx = 1;

		smallButtons.add(reset, gbc);

		gbc.gridx = 2;

		smallButtons.add(first, gbc);

		gbc.gridx = 3;

		smallButtons.add(back, gbc);

		gbc.gridx = 4;

		smallButtons.add(next, gbc);

		gbc.gridx = 5;

		smallButtons.add(tfwload, gbc);

		gbc.gridx = 6;

		smallButtons.add(save, gbc);

		gbc.anchor = GridBagConstraints.EAST;

		applyButton.add(apply, gbc);

		buttonsPanel.add(smallButtons, gbc);

		gbc.gridy = 1;

		gbc.weightx = 1.0;

		buttonsPanel.add(applyButton, gbc);

		gbc.gridx = 0;

		gbc.gridy = 0;

		gbc.weightx = 1.0;

			//buttonsPanel.setBorder(javax.swing.BorderFactory.createTitledBorder(null, "", javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION, javax.swing.border.TitledBorder.DEFAULT_POSITION, null, null));

	public void setParams(FLyrRasterSE lyr, ViewPort vp) {

		this.vp = vp;

	/**

	 * Obtiene el viewport de la vista en el momento de lanzar el interfaz

	 * @return

	 */

	public ViewPort getViewPort() {

		return this.vp;

	}

	/**

	 * Obtiene el bot?n de carga de georreferenciaci?n desde tfw

	 * @return JButton

	 */

	public JButton getTfwLoad() {

		return tfwload;

	}

	 * Obtiene el bot?n de centrado de raster en la vista

	 * @return JButton

	 */

	public JButton getCenterToView() {

		return center;

	}

	/**

		GeoLocationDialog gld = new GeoLocationDialog(lyr, mapCtrl.getViewPort());

center_raster=Centrar la capa raster en la vista

tfw_load=Cargar georreferenciaci?n desde fichero tfw

error_lectura=No se puede leer en la ruta especificada.

error_file_not_found=Fichero no encontrado.

error_file_not_valid=El fichero seleccionado no parece ser valido.

	public static void main(String[] args) {