Application: gvSIG desktop

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2006 Prodevelop and Generalitat Valenciana.

 *

 * 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:

 *

 *   Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib??ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *   +34 963862235

 *   gvsig@gva.es

 *   www.gvsig.gva.es

 *

 *    or

 *

 *   Prodevelop Integraci?n de Tecnolog?as SL

 *   Conde Salvatierra de ?lava , 34-10

 *   46004 Valencia

 *   Spain

 *

 *   +34 963 510 612

 *   +34 963 510 968

 *   gis@prodevelop.es

 *   http://www.prodevelop.es

 */

package es.prodevelop.cit.gvsig.arcims.gui.panels;

import com.iver.andami.PluginServices;

import es.prodevelop.cit.gvsig.arcims.fmap.layers.LayerScaleData;

import es.prodevelop.cit.gvsig.arcims.gui.dialogs.LayerScaleDialog;

import java.awt.BasicStroke;

import java.awt.Color;

import java.awt.Font;

import java.awt.FontMetrics;

import java.awt.Graphics;

import java.awt.Graphics2D;

import java.awt.Stroke;

import java.awt.geom.AffineTransform;

import java.util.Vector;

import javax.swing.JLabel;

import javax.swing.JPanel;

/**

 * This is the 'canvas' where layer scale limits status is

 * painted.

 *

 * @author jldominguez

 *

 */

public class LayerScaleDrawPanel extends JPanel {

    private static final long serialVersionUID = 0;

    private LayerScaleDialog parentDialog;

    private Vector layerLabelsVector = new Vector();

    private Vector layerInfo = new Vector();

    private float currentScale;

    private int dpi = 96;

    private String fontName = "Dialog";

    private rulerItem[] rulerItems;

    // ----------------------------------------------------------------------------

    private double minScale = 500.0;

    private double maxScale = 10000000.0;

    private int minScaleX = 93; //88; // +- 8 for less than and more than

    private int maxScaleX = 762;

    private int margin = 8;

    private int rowHeight = 12;

    private int rowSep = 15;

    private int parentDialogMinLimitForNormalTitle = 485;

    private int parentDialogMinLimitForShortTitle = 350;

    private Color carrilColor = new Color(219, 219, 219);

    private Color scaleLineColor = new Color(199, 106, 191);

    // ----------------------------------------------------------------------------

    private double logDist = Math.log(maxScale) - Math.log(minScale);

    private String title = "";

    private double medScale;

    private JLabel updateLabel;

    /**

     * @param info this vector contains the layers' scale info

     */

    public LayerScaleDrawPanel(Vector info, LayerScaleDialog dlg, JLabel ulabel) {

        super();

        parentDialog = dlg;

        updateLabel = ulabel;

        LayerScaleData theInfo;

        LayerLabel ll;

        currentScale = (float) 1.0;

        setBackground(Color.WHITE);

        setLayout(null);

        // layerInfo = invertedVector(info);

        layerInfo = copyVector(info, true);

        int size = info.size();

        for (int i = 0; i < size; i++) {

            theInfo = (LayerScaleData) layerInfo.get(i);

            ll = new LayerLabel(theInfo.getName(), theInfo.getId());

            ll.setBounds(5, indexDomainToYDomain(i), getLabelsWidth(), rowHeight);

            // ll.setBounds(5, indexDomainToYDomain((size - 1) - i), getLabelsWidth(), rowHeight);

            layerLabelsVector.add(ll);

            add(ll);

        }

        layerInfo = copyVector(layerInfo, true);

        rulerItems = getRulerItems();

        medScale = Math.sqrt(maxScale * minScale);

        medScale = Math.sqrt(medScale * minScale);

    }

    public void resetInfo(Vector info) {

        layerLabelsVector.removeAllElements();

        removeAll();

        layerInfo = info;

        LayerScaleData theInfo;

        LayerLabel ll;

        int size = info.size();

        for (int i = 0; i < size; i++) {

            theInfo = (LayerScaleData) layerInfo.get(i);

            ll = new LayerLabel(theInfo.getName(), theInfo.getId());

            ll.setBounds(5, indexDomainToYDomain((size - 1) - i), getLabelsWidth(), rowHeight);

            layerLabelsVector.add(ll);

            add(ll);

        }

    }

    private Vector copyVector(Vector v, boolean inverted) {

        Vector res = new Vector();

        if (inverted) {

            for (int i = (v.size() - 1); i >= 0; i--) res.add(v.get(i));

        } else {

            for (int i = 0; i < v.size(); i++) res.add(v.get(i));

        }

        return res;

    }

    /**

     * Sets current scale (it is represented as a vertical line)

     * @param s

     */

    public void setCurrentScale(double s) {

        currentScale = (float) s;

        updateLabel.setText(PluginServices.getText(this, "Escala") + "  1 : " +

            LayerScaleDialog.getFormattedInteger(Math.round(currentScale)));

    }

    public void setCurrentScale(float s) {

        currentScale = s;

        updateLabel.setText(PluginServices.getText(this, "Escala") + "  1 : " +

            LayerScaleDialog.getFormattedInteger(Math.round(currentScale)));

    }

    public float getCurrentScale() {

        return currentScale;

    }

    private int getLabelsWidth() {

        return minScaleX - margin - 5;

    }

    public void paint(Graphics g) {

        super.paint(g);

        Graphics2D g2d = (Graphics2D) g;

        maxScaleX = getWidth() - 20;

        if (getParentWidth() < parentDialogMinLimitForNormalTitle) {

            if (getParentWidth() < parentDialogMinLimitForShortTitle) {

                setEmptyTitle();

            }

            else {

                setShortTitle();

            }

        }

        else {

            setNormalTitle();

        }

        drawTitle(g2d);

        g2d.setStroke(new BasicStroke(1));

        g2d.setFont(new Font(fontName, Font.PLAIN, 12));

        int size = layerInfo.size();

        for (int i = 0; i < size; i++) {

            LayerScaleData info = (LayerScaleData) layerInfo.get(i);

            int x_min;

            int y_min;

            int w;

            int x_max = this.scaleDomainToXDomain(Math.pow(10.0, 9.0));

            x_min = scaleDomainToXDomain(info.getMinSc());

            w = scaleDomainToXDomain(info.getMaxSc()) - x_min;

            // y_min = indexDomainToYDomain(i);

            y_min = indexDomainToYDomain((size - 1) - i);

            g2d.setColor(carrilColor);

            g2d.fillRect((minScaleX - margin), y_min,

                x_max - (minScaleX - margin), rowHeight);

            g2d.setColor(info.getColor(currentScale));

            g2d.fillRect(x_min, y_min, w, rowHeight);

            g2d.setColor(Color.BLACK);

        }

        drawRuler(g2d, size);

        drawCurrentScale(g2d, size);

        int x = Math.min(getWidth() - 136,

                ((getParentWidth() - parentDialogMinLimitForNormalTitle) / 2) +

                (parentDialogMinLimitForNormalTitle - 136));

        drawLegend(g2d, x, 10);

    }

    private void setEmptyTitle() {

        title = "";

    }

    private void setNormalTitle() {

        title = PluginServices.getText(this, "scale_limits_status");

    }

    private void setShortTitle() {

        title = PluginServices.getText(this, "scale_limits");

    }

    private void drawTitle(Graphics2D g) {

        g.setColor(Color.GRAY);

        g.setFont(new Font(fontName, Font.BOLD, 20));

        g.drawString(title, 20, 55);

    }

    private void drawRuler(Graphics2D g, int i) {

        g.setColor(Color.DARK_GRAY);

        int x_min = this.scaleDomainToXDomain(minScale - 1.0);

        int x_max = this.scaleDomainToXDomain(maxScale + 1.0);

        int y = this.indexDomainToYDomain(0) - 10;

        int offsetFromTagsToRuler = 8;

        g.drawLine(x_min, y, x_max, y);

        // arrows

        int[] xp = { x_min - 2, x_min + 5, x_min + 5 };

        int[] yp = { y, y - 3, y + 3 };

        g.fillPolygon(xp, yp, 3);

        int[] x2p = { x_max + 2, x_max - 5, x_max - 5 };

        g.fillPolygon(x2p, yp, 3);

        // ---------------- scale label -------------------------

        g.setFont(new Font(fontName, Font.BOLD, 12));

        g.drawString(PluginServices.getText(this, "the_scale"), 20, y - 44);

        g.drawString("(DPI = " + dpi + ")", 20, (y + 12) - 44);

        g.setFont(new Font(fontName, Font.PLAIN, 12));

        // ------------------------------------------------------

        rulerItem ruIt;

        g.drawString("1:", scaleDomainToXDomain(minScale) - 30,

            y - offsetFromTagsToRuler);

        AffineTransform oldt = g.getTransform();

        AffineTransform newt;

        AffineTransform rott;

        AffineTransform trat;

        double angulo = -65.0;

        for (int ind = 0; ind < rulerItems.length; ind++) {

            ruIt = this.rulerItems[ind];

            g.drawLine(ruIt.getScaleInXDomain(), y - 3,

                ruIt.getScaleInXDomain(), y + 3);

            int strx = ruIt.getScaleInXDomain();

            int stry = y - offsetFromTagsToRuler;

            trat = AffineTransform.getTranslateInstance(1.0 * strx, 1.0 * stry);

            rott = AffineTransform.getRotateInstance((angulo * 3.1415926) / 180.0);

            newt = (AffineTransform) oldt.clone();

            newt.concatenate(trat);

            newt.concatenate(rott);

            g.setTransform(newt);

            g.drawString(ruIt.getTag(), 0, 0);

            g.setTransform(oldt);

        }

    }

    private int indexDomainToYDomain(int i) {

        return Math.round((float) (158.0 + (rowSep * i)));

    }

    private int scaleDomainToXDomain(double d) {

        if (d < minScale) {

            return minScaleX - margin;

        }

        if (d > maxScale) {

            return maxScaleX + margin;

        }

        double dist = Math.log(d) - Math.log(minScale);

        return Math.round((float) ((1.0 * minScaleX) +

            ((dist * (maxScaleX - minScaleX)) / logDist)));

    }

    private void drawCurrentScale(Graphics2D g, int i) {

        int footLength = 90;

        int x = this.scaleDomainToXDomain(currentScale);

        int y_min = indexDomainToYDomain(0) - 10;

        int y_max = indexDomainToYDomain(layerInfo.size()) + 18;

        Stroke old = g.getStroke();

        g.setStroke(new BasicStroke(1));

        g.setColor(scaleLineColor);

        g.drawLine(x, y_min, x, y_max);

        // little square

        int[] xp = { x - 1, x + 2, x + 2, x - 1 };

        int[] yp = { y_min - 1, y_min - 1, y_min + 2, y_min + 2 };

        g.fillPolygon(xp, yp, 4);

        if (currentScale > medScale) { // label to the left

            g.drawLine(x, y_max, x - footLength, y_max);

            g.setColor(LayerScaleData.darker(scaleLineColor));

            g.setFont(new Font(fontName, Font.BOLD, 12));

            g.drawString(PluginServices.getText(this, "current_scale"),

                x - footLength, y_max - 4);

        }

        else { // label to the right

            g.drawLine(x, y_max, x + 10, y_max);

            g.setColor(LayerScaleData.darker(scaleLineColor));

            g.setFont(new Font(fontName, Font.BOLD, 12));

            g.drawString(PluginServices.getText(this, "current_scale"), x + 15,

                y_max + 4);

        }

        g.setFont(new Font(fontName, Font.PLAIN, 12));

        g.setStroke(old);

    }

    private void drawLegend(Graphics2D g, int orx, int ory) {

        // width = 2 * margin + 2 * sampleW + labelW = 126 

        // height = 2 * margin + 4 * rowSep = 76

        int sampleW = 25;

        int margin = 8;

        int labelW = 60;

        // -----------------------------------------

        int correction = -2;

        int smpx = orx + margin + labelW;

        int smpy = ory + margin + (2 * rowSep) + (rowSep - rowHeight);

        int auxx;

        int auxy;

        g.setFont(new Font(fontName, Font.PLAIN, 12));

        auxx = orx + margin;

        auxy = ory + (2 * rowSep) + margin;

        g.setColor(Color.GRAY);

        g.drawString(PluginServices.getText(this, "type"), auxx,

            auxy + correction);

        auxy = auxy + rowSep;

        g.setColor(Color.BLACK);

        g.drawString(PluginServices.getText(this, "vectorial"), auxx, auxy);

        auxy = auxy + rowSep;

        g.drawString(PluginServices.getText(this, "raster"), auxx, auxy);

        auxx = orx + margin + labelW;

        auxy = ory + rowSep + margin;

        g.setColor(Color.GRAY);

        g.drawString(PluginServices.getText(this, "visible"), auxx,

            auxy + correction);

        auxy = auxy + rowSep;

        g.setFont(new Font(fontName, Font.PLAIN, 10));

        g.setColor(Color.BLACK);

        g.drawString(PluginServices.getText(this, "YES"), auxx,

            auxy + correction);

        auxx = auxx + sampleW;

        g.drawString(PluginServices.getText(this, "NO"), auxx, auxy +

            correction);

        // --------- samples ---------------------

        g.setColor(LayerScaleData.featYesColor);

        g.fillRect(smpx, smpy, sampleW, rowHeight);

        g.setColor(LayerScaleData.featNoColor);

        g.fillRect(smpx + sampleW, smpy, sampleW, rowHeight);

        g.setColor(LayerScaleData.imagYesColor);

        g.fillRect(smpx, smpy + rowSep, sampleW, rowHeight);

        g.setColor(LayerScaleData.imagNoColor);

        g.fillRect(smpx + sampleW, smpy + rowSep, sampleW, rowHeight);

        g.setColor(Color.BLACK);

        g.drawRect(orx, ory, (2 * margin) + (2 * sampleW) + labelW,

            (2 * margin) + (4 * rowSep));

        // ------------------------------------------

    }

    //        public void setLayerInfo(Vector v) {

    //                layerInfo = invertedVector(v);

    //        }

    public void setDpi(int dpi) {

        this.dpi = dpi;

    }

    /**

     *

     * @return Scale items shown on ruler

     */

    private rulerItem[] getRulerItems() {

        rulerItem[] ri = new rulerItem[12];

        ri[0] = new rulerItem(500);

        ri[1] = new rulerItem(2000);

        ri[2] = new rulerItem(5000);

        ri[3] = new rulerItem(10000);

        ri[4] = new rulerItem(25000);

        ri[5] = new rulerItem(50000);

        ri[6] = new rulerItem(100000);

        ri[7] = new rulerItem(250000);

        ri[8] = new rulerItem(500000);

        ri[9] = new rulerItem(1000000);

        ri[10] = new rulerItem(5000000);

        ri[11] = new rulerItem(10000000); // must be the same as 'private double maxScale'

        return ri;

    }

    private int getParentWidth() {

        if (parentDialog == null) {

            return parentDialogMinLimitForNormalTitle;

        }

        else {

            return parentDialog.getWidth();

        }

    }

    /**

     * Utility class used to allow tool tips.

     *

     * @author jldominguez

     *

     */

    public class LayerLabel extends JLabel {

        private static final long serialVersionUID = 0;

        private String theName = "";

        private String theId = "";

        public LayerLabel(String name, String id) {

            theName = name;

            theId = id;

            setToolTipText(toolTipString());

            setText(toString());

            setFont(new Font(fontName, Font.BOLD, 12));

        }

        public String toString() {

            if (theName.length() < 19) {

                return theName;

            }

            return theName.substring(0, 16) + "...";

        }

        public String toolTipString() {

            return "[" + theId + "] " + theName;

        }

    }

    private class rulerItem {

        private int scale;

        public rulerItem(int sc) {

            scale = sc;

        }

        public String getTag() {

            return intToAbbrev(scale);

        }

        public int getScale() {

            return scale;

        }

        public int getScaleInXDomain() {

            return scaleDomainToXDomain(1.0 * scale);

        }

        public int xAxisOffset() {

            return (getTag().length() * 4) + 3;

        }

        private String intToAbbrev(int n) {

            if (n >= 1000000) {

                return String.valueOf(n / 1000000) + " M";

            }

            return String.valueOf(n);

        }

    }

}