| gvSIG desktop 1

/* Generated by Together */

package com.iver.cit.gvsig.fmap;

import java.awt.Color;

import java.awt.Dimension;

import java.awt.geom.AffineTransform;

import java.awt.geom.Point2D;

import java.awt.geom.Rectangle2D;

import java.util.ArrayList;

public class ViewPort {        

        public static int KILOMETROS = 1;

        public static int METROS = 2;

        public static int MILLAS = 3;

        public static int YARDAS = 4;

        public static int PIES = 5;

        public static int PULGADAS = 6;

    private Rectangle2D extent;

    private Rectangle2D adjustedExtent;

    private ExtentHistory extents = new ExtentHistory();

    private Dimension imageSize;

    private AffineTransform trans = new AffineTransform();

        private int distanceUnits = METROS;

        private int mapUnits = METROS;

    private ArrayList extentListeners;

    private Point2D offset = new Point2D.Double(0, 0);

    private Rectangle2D clip;

        private Color backColor = Color.WHITE;

        private double scale;

        public boolean addExtentListener(ExtentListener arg0) {

                return extentListeners.add(arg0);

        }

        public boolean removeExtentListener(ExtentListener arg0) {

                return extentListeners.remove(arg0);

        }

    public int fromMapDistance(double d) {

            //TODO Implementar bien

            return -1;

    }

    public Point2D fromMapPoint(double x, double y) {

            //TODO Implementar bien

            return null;

    }

    public Point2D toMapPoint(int x, int y) {

            //TODO Implementar bien

            return null;

    }

    public double toMapDistance(int d) {

            //TODO Implementar bien

            return -1;

    }

    public Point2D toMapPoint(Point2D pScreen) {

            //TODO Implementar bien

            return null;

    }

    public void setPreviousExtent() {

    }

    public Rectangle2D getExtent() {

            return extent;

    }

    public void setExtent(Rectangle2D r) {

            extent = r;

            //TODO calcular la escala sin usar setScale

            //Calcula la transformaci?n af?n

            calculateAffineTransform();

    }

    public void setScale(double scale) {

            this.scale = scale;

            //TODO calcular el extent sin usar setExtent

            //Calcula la transformaci?n af?n

            calculateAffineTransform();

    }

    /**

     * Devuelve la escala. Debe estar siempre actualizada y

     * no calcularse nunca aqu? pues se utiliza en el dibujado

     * para cada geometr?a

     * @return

     */

    public double getScale() {

            return scale;

    }

        /**

         * @return

         */

        public AffineTransform getAffineTransform() {

                return trans;

        }

        /**

         * @return Returns the imageSize.

         */

        public Dimension getImageSize() {

                return imageSize;

        }

        /**

         * @param imageSize The imageSize to set.

         */

        public void setImageSize(Dimension imageSize) {

                this.imageSize = imageSize;

                calculateAffineTransform();

        }

        /**

         * 

         */

        private void calculateAffineTransform() {

                if ((imageSize == null) || (extent == null)) return;

        AffineTransform escalado = new AffineTransform();

        AffineTransform translacion = new AffineTransform();

        double escalaX;

        double escalaY;

        escalaX = imageSize.getWidth() / extent.getWidth();

        escalaY = imageSize.getHeight() / extent.getHeight();

        adjustedExtent = new Rectangle2D.Double();

        if (escalaX < escalaY) {

            scale = escalaX;

            adjustedExtent.setRect(extent.getX(), extent.getY(), extent.getWidth(), imageSize.getHeight() / scale);

        } else {

            scale = escalaY;

            adjustedExtent.setRect(extent.getX(), extent.getY(), imageSize.getWidth() / scale, extent.getHeight());

        }

        translacion.setToTranslation(-adjustedExtent.getX(), -adjustedExtent.getY() -

                        adjustedExtent.getHeight());

        escalado.setToScale(scale, -scale);

        AffineTransform offsetTrans = new AffineTransform();

        offsetTrans.setToTranslation(offset.getX(), offset.getY());

        trans.setToIdentity();

        trans.concatenate(offsetTrans);

        trans.concatenate(escalado);

        trans.concatenate(translacion);

        }

        public void setBackColor(Color c) {

                backColor = c;

        }

        public Color getBackColor() {

                return backColor;

        }

        /**

         * @return Returns the adjustedExtent.

         */

        public Rectangle2D getAdjustedExtent() {

                return adjustedExtent;

        }

        /**

         * @return Returns the distanceUnits.

         */

        public int getDistanceUnits() {

                return distanceUnits;

        }

        /**

         * @param distanceUnits The distanceUnits to set.

         */

        public void setDistanceUnits(int distanceUnits) {

                this.distanceUnits = distanceUnits;

        }

        /**

         * @return Returns the mapUnits.

         */

        public int getMapUnits() {

                return mapUnits;

        }

        /**

         * @param mapUnits The mapUnits to set.

         */

        public void setMapUnits(int mapUnits) {

                this.mapUnits = mapUnits;

        }        

        public int getImageWidth(){

                return imageSize.width;

        }

        public int getImageHeight(){

                return imageSize.height;

        }

}