Application: gvSIG desktop » gvSIG Document Layout

package org.gvsig.app.project.documents.layout.fframes.gui;

import java.awt.GridBagConstraints;

import java.awt.GridBagLayout;

import java.awt.Insets;

import java.text.DecimalFormat;

import java.text.NumberFormat;

import java.text.ParseException;

import javax.swing.JLabel;

import javax.swing.JPanel;

import javax.swing.JTextField;

import javax.swing.text.NumberFormatter;

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.geom.GeometryLocator;

import org.gvsig.fmap.geom.GeometryManager;

import org.gvsig.fmap.geom.exception.CreateEnvelopeException;

import org.gvsig.fmap.geom.primitive.Envelope;

import org.gvsig.i18n.Messages;

import org.slf4j.LoggerFactory;

public class EnvelopePanel extends JPanel {

        private static final long serialVersionUID = -1828624765045725544L;

        private JTextField fldTop = null;

        private JTextField fldLeft = null;

        private JTextField fldRight = null;

        private JTextField fldBottom = null;

        private static final GeometryManager geoMgr = GeometryLocator.getGeometryManager();

        private int fieldWidth;

        private DecimalFormat formatLatLon = new DecimalFormat("0.######");

        private DecimalFormat formatMetres = new DecimalFormat("0.##");

        public EnvelopePanel() {

                this(8);

        }

        public EnvelopePanel(int fieldWidth) {

                super(new GridBagLayout());

                this.fieldWidth = fieldWidth;

                initComponents();

        }

        protected void initComponents() {

                int row = 0;

                GridBagConstraints c = new GridBagConstraints();

                c.gridy = row++;

                c.gridx = 1;

                c.anchor = GridBagConstraints.LINE_END;

                c.insets = new Insets(0, 5, 5, 5);

                JLabel label = new JLabel(Messages.getText("Top_extent_lbl"));

                add(label, c);

                c.gridx = 2;

                c.anchor = GridBagConstraints.LINE_START;

                add(getFldTop(), c);

                c.gridy = row++;

                c.gridx = 0;

                c.insets = new Insets(5, 0, 5, 5);

                c.anchor = GridBagConstraints.LINE_END;

                label = new JLabel(Messages.getText("Left_extent_lbl"));

                add(label, c);

                c.gridx = 1;

                c.insets = new Insets(5, 5, 5, 5);

                c.anchor = GridBagConstraints.LINE_START;

                add(getFldLeft(), c);                

                c.gridx = 3;

                c.anchor = GridBagConstraints.LINE_END;

                label = new JLabel(Messages.getText("Right_extent_lbl"));

                add(label, c);

                c.gridx = 4;

                c.anchor = GridBagConstraints.LINE_START;

                c.insets = new Insets(5, 5, 5, 0);

                add(getFldRight(), c);

                c.gridy = row++;

                c.gridx = 1;

                c.anchor = GridBagConstraints.LINE_END;

                label = new JLabel(Messages.getText("Bottom_extent_lbl"));

                c.insets = new Insets(5, 5, 0, 5);

                add(label, c);

                c.gridx = 2;

                c.anchor = GridBagConstraints.LINE_START;

                add(getFldBottom(), c);

        }

        private JTextField getFldTop() {

                if (fldTop==null) {

                        fldTop  = new JTextField(fieldWidth);

                }

                return fldTop;

        }

        private JTextField getFldLeft() {

                if (fldLeft==null) {

                        fldLeft = new JTextField(fieldWidth);

                }

                return fldLeft;

        }

        private JTextField getFldRight() {

                if (fldRight==null) {

                        fldRight  = new JTextField(fieldWidth);

                }

                return fldRight;

        }

        private JTextField getFldBottom() {

                if (fldBottom==null) {

                        fldBottom  = new JTextField(fieldWidth);

                }

                return fldBottom;

        }

        public Envelope getEnvelope() {

                double minX = 0.0, minY=0.0, maxX=0.0, maxY=0.0;

                try {

                        maxY = formatMetres.parse(getFldTop().getText()).doubleValue();

                        maxX = formatMetres.parse(getFldRight().getText()).doubleValue();

                        minY = formatMetres.parse(getFldBottom().getText()).doubleValue();

                        minX = formatMetres.parse(getFldLeft().getText()).doubleValue();

                } catch (ParseException e1) {

                        try {

                                maxY = Double.parseDouble(getFldTop().getText().replaceAll(",", "."));

                                maxX = Double.parseDouble(getFldRight().getText().replaceAll(",", "."));

                                minY = Double.parseDouble(getFldBottom().getText().replaceAll(",", "."));

                                minX = Double.parseDouble(getFldLeft().getText().replaceAll(",", "."));

                        } catch (NumberFormatException e2) {

                                LoggerFactory.getLogger(EnvelopePanel.class).error("Error parsing envelope", e1);

                                return null;

                        }

                }

                try {

                        return geoMgr.createEnvelope(minX, minY, maxX, maxY, Geometry.SUBTYPES.GEOM2D);

                } catch (CreateEnvelopeException e) {

                        LoggerFactory.getLogger(EnvelopePanel.class).error("Error creating envelope", e);

                        return null;

                }

        }

        public void setEnvelope(Envelope envelope) {

                double top = envelope.getMaximum(1);

                double left = envelope.getMinimum(0);

                double right = envelope.getMaximum(0);

                double bottom = envelope.getMinimum(1);

                DecimalFormat format;

                if (top>Math.abs(90.0d) || left>Math.abs(180.0d) ||

                                right>Math.abs(180.0d) || bottom>Math.abs(90.0d)) {

                        format = formatMetres;

                }

                else {

                        format = formatLatLon;

                }

                String topStr = format.format(top);

                getFldTop().setText(topStr);

                String leftStr = format.format(left);

                getFldLeft().setText(leftStr);

                String rightStr = format.format(right);

                getFldRight().setText(rightStr);

                String bottomStr = format.format(bottom);

                getFldBottom().setText(bottomStr);

        }

        public void setEditable(boolean editable) {

                getFldTop().setEditable(editable);

                getFldLeft().setEditable(editable);

                getFldRight().setEditable(editable);

                getFldBottom().setEditable(editable);

        }

}