| gvSIG desktop 1

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

 *

 * Copyright (C) 2005 IVER T.I. 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

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

package com.iver.cit.gvsig.fmap.core.symbols;

import java.awt.Color;

import java.awt.Font;

import java.awt.Graphics2D;

import java.awt.Rectangle;

import java.awt.Shape;

import java.awt.font.FontRenderContext;

import java.awt.font.GlyphVector;

import java.awt.geom.AffineTransform;

import java.awt.geom.Point2D;

import java.awt.geom.Rectangle2D;

import javax.print.attribute.PrintRequestAttributeSet;

import org.apache.batik.ext.awt.geom.PathLength;

import com.hardcode.gdbms.driver.exceptions.ReadDriverException;

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

import com.iver.cit.gvsig.fmap.core.CartographicSupportToolkit;

import com.iver.cit.gvsig.fmap.core.FPoint2D;

import com.iver.cit.gvsig.fmap.core.FPolygon2D;

import com.iver.cit.gvsig.fmap.core.FShape;

import com.iver.cit.gvsig.fmap.core.GeneralPathX;

import com.iver.cit.gvsig.fmap.core.IGeometry;

import com.iver.cit.gvsig.fmap.core.v02.FConverter;

import com.iver.utiles.StringUtilities;

import com.iver.utiles.XMLEntity;

import com.iver.utiles.swing.threads.Cancellable;

import com.vividsolutions.jts.geom.Geometry;

import com.vividsolutions.jts.geom.Point;

/**

 * SimpleTextSymbol is a class used to create symbols composed using a text defined by

 * the user.This text can be edited (changing the color, the font of the characters, and

 * the rotation of the text).

 * @author jaume dominguez faus - jaume.dominguez@iver.es

 *

 */

public class SimpleTextSymbol extends AbstractSymbol implements ITextSymbol {

        private String text = "";

        private Font font = new Font("Arial", Font.PLAIN, 12);

        private Color textColor = Color.BLACK;

        private double rotation;

        private FontRenderContext frc = new FontRenderContext(

                        new AffineTransform(), false, true);

        public void draw(Graphics2D g, AffineTransform affineTransform, FShape shp, Cancellable cancel) {

                if (!isShapeVisible()) return;

                // TODO remove this stuff and allow only points

                Point2D p = null;

                double rot=0;

//                shp.transform(affineTransform);

                switch (shp.getShapeType()) {

                case FShape.POINT:

                        FPoint2D fp=(FPoint2D) shp;

                        p = new Point2D.Double(fp.getX(),fp.getY());

                        rot = rotation;

                        break;

                case FShape.LINE:

                        PathLength pathLen = new PathLength(shp);

                        // if (pathLen.lengthOfPath() < width / mT.getScaleX()) return;

                        float midDistance = pathLen.lengthOfPath() / 2;

                        p = pathLen.pointAtLength(midDistance);

                        rot = pathLen.angleAtLength(midDistance);

                        break;

                case FShape.POLYGON:

                        Geometry geo = FConverter.java2d_to_jts(shp);

                        if (geo == null) {

                                return;

                        }

                        Point pJTS = geo.getCentroid();

                        if (pJTS != null) {

                                FShape pLabel = FConverter.jts_to_java2d(pJTS);

                                p= new Point2D.Double(((FPoint2D) pLabel).getX(),

                                                ((FPoint2D) pLabel).getY());

                        }

                        break;

                }

                g.setColor(textColor);

                g.setFont(font);

                g.translate(p.getX(), p.getY());

                // TODO comprovar que els radians no estiga rotant-los al rev?s

                // en AttrInTableLabels est? posat a -rot per a que els veja b?

                // i ?s prou sospit?s. Mira on m?s es fa ?s d'este s?mbol i comprova

                // que all? no estiga fent-se tamb? -rot, si ?s aix?, ?s perqu? ac?

                // est? al reves (i en tots els llocs on es gasta)

                g.rotate(rot);

                g.drawString(getText(), 0, getBounds().height);

                Rectangle2D bounds = getBounds();

                bounds.setFrame(0, 0, bounds.getWidth(), bounds.getHeight());

                g.rotate(-rot);

                g.translate(-p.getX(), -p.getY());

        }

        public void drawInsideRectangle(Graphics2D g,

                        AffineTransform scaleInstance, Rectangle r) throws SymbolDrawingException {

                float fontSize = getFont().getSize();

                float fontScaleFactor = (float) ((getText().length()*fontSize) * 0.8) // text length with a 20% margin

                                                                / r.width;

                g.setColor(textColor);

                g.translate(r.x, r.y);

                fontSize = fontSize /fontScaleFactor;

                if (fontSize > r.height)

                        fontSize = r.height;

                g.setFont(new Font(getFont().getName(), getFont().getStyle(), (int)fontSize));

                g.drawString(getText(), 0, fontSize);

                g.translate(-r.x, -r.y);

        }

        public int getOnePointRgb() {

                return textColor.getRGB();

        }

        public void getPixExtentPlus(FShape shp, float[] distances,

                        ViewPort viewPort, int dpi) {

                // TODO Implement it

                throw new Error("Not yet implemented!");

        }

        public ISymbol getSymbolForSelection() {

                return this; // a text is not selectable

        }

        public int getSymbolType() {

                return FShape.TEXT;

        }

        public XMLEntity getXMLEntity() {

                XMLEntity xml = new XMLEntity();

                xml.putProperty("className", getClassName());

                xml.putProperty("desc", getDescription());

                xml.putProperty("isShapeVisible", isShapeVisible());

                xml.putProperty("font", font.getName());

                xml.putProperty("fontStyle", font.getStyle());

                xml.putProperty("size", font.getSize());

                xml.putProperty("text", text);

                xml.putProperty("textColor", StringUtilities.color2String(textColor));

                xml.putProperty("unit", getUnit());

                xml.putProperty("referenceSystem", getReferenceSystem());

                return xml;

        }

        public boolean isSuitableFor(IGeometry geom) {

                return true;

        }

        public void setXMLEntity(XMLEntity xml) {

                font = new Font(xml.getStringProperty("font"),

                                xml.getIntProperty("fontStyle"),

                                xml.getIntProperty("size"));

                setDescription(xml.getStringProperty("desc"));

                setIsShapeVisible(xml.getBooleanProperty("isShapeVisible"));

                text = xml.getStringProperty("text");

                textColor = StringUtilities.string2Color(xml.getStringProperty("textColor"));

                setUnit(xml.getIntProperty("unit"));

                setReferenceSystem(xml.getIntProperty("referenceSystem"));

        }

        public String getClassName() {

                return getClass().getName();

        }

        public void print(Graphics2D g, AffineTransform at, FShape shape, PrintRequestAttributeSet properties)

                        throws ReadDriverException {

                // TODO Implement it

                throw new Error("Not yet implemented!");

        }

        public String getText() {

                return text;

        }

        public Font getFont() {

                return font;

        }

        public Color getTextColor() {

                return textColor;

        }

        public void setText(String text) {

                this.text = text;

        }

        public void setFont(Font font) {

                this.font = font;

        }

        public void setTextColor(Color color) {

                this.textColor = color;

        }

        public void setFontSize(double size) {

                this.font = new Font(font.getName(), font.getStyle(), (int) size);

        }

        /**

         * Defines the angle of rotation for the text that composes the symbol

         *

         * @param rotation

         */

        public void setRotation(double rotation) {

                this.rotation = rotation;

        }

        /**

         * Returns an FShape which represents a rectangle containing the text in

         * <b>screen</b> units.

         */

        public FShape getTextWrappingShape(FPoint2D p) {

                Font font = getFont();

                GlyphVector gv = font.createGlyphVector(frc, text);

                Shape shape = gv.getOutline((float) p.getX(), (float) p.getY());

                FShape myFShape = new FPolygon2D(new GeneralPathX(shape.getBounds()));

                myFShape.transform(AffineTransform.getTranslateInstance(p.getX(), p.getY()));

                if (rotation != 0) {

                        myFShape.transform(AffineTransform.getRotateInstance(rotation));

                }

                return myFShape;

        }

        public Rectangle getBounds() {

                Rectangle bounds = getTextWrappingShape(new FPoint2D(0,0)).getBounds();

//                bounds.setLocation(

//                                (int) Math.round(bounds.getX()), 

//                                (int) Math.round(bounds.getY()-bounds.getHeight()));

//        

                return bounds;

        }

        /**

         * Returns an FShape which represents a rectangle containing the text in

         * <b>screen</b> units.

         */

        private FShape _getTextWrappingShape(Graphics2D g, /*AffineTransform affineTransform,*/ FPoint2D p) {

                // assuming FShape is a point with the starting position of the text

                Font font = getFont();

//                FontRenderContext frc = g.getFontRenderContext();

                FontRenderContext frc = new FontRenderContext(new AffineTransform(), false, true);

                GlyphVector gv = font.createGlyphVector(frc, text);

                /*p.transform(affineTransform);*/

                Shape shape = gv.getOutline((float) p.getX(), (float) p.getY());

                FShape myFShape = new FPolygon2D(new GeneralPathX(shape.getBounds2D()));

                if (rotation != 0) {

                        myFShape.transform(AffineTransform.getRotateInstance(rotation, p.getX(), p.getY()));

                }

                return myFShape;

        }

        /**

         * Returns an FShape which represents a rectangle containing the text in

         * <b>screen</b> units.

         */

        private FShape _getTextWrappingShape(Graphics2D g, /*AffineTransform affineTransform,*/ FShape targetSymbolShape ) {

                // assuming FShape is a point with the starting position of the text

                Font font = getFont();

                FontRenderContext frc = g.getFontRenderContext();

                GlyphVector gv = font.createGlyphVector(frc, text);

                Point2D p = null;

                switch (targetSymbolShape.getShapeType()) {

                case FShape.POINT:

                        FPoint2D fp=(FPoint2D) targetSymbolShape;

                        p = new Point2D.Double(fp.getX(),fp.getY());

                        break;

                case FShape.LINE:

                        PathLength pathLen = new PathLength(targetSymbolShape);

                        // if (pathLen.lengthOfPath() < width / mT.getScaleX()) return;

                        float midDistance = pathLen.lengthOfPath() / 2;

                        p = pathLen.pointAtLength(midDistance);

                        break;

                case FShape.POLYGON:

                        Geometry geo = FConverter.java2d_to_jts(targetSymbolShape);

                        if (geo == null) {

                                return null;

                        }

                        Point pJTS = geo.getCentroid();

                        if (pJTS != null) {

                                FShape pLabel = FConverter.jts_to_java2d(pJTS);

                                p= new Point2D.Double(((FPoint2D) pLabel).getX(),

                                                ((FPoint2D) pLabel).getY());

                        }

                        break;

                }

                /*p.transform(affineTransform);*/

                Shape shape = gv.getOutline((float) p.getX(), (float) p.getY());

                FShape myFShape = new FPolygon2D(new GeneralPathX(shape.getBounds2D()));

                if (rotation != 0) {

                        myFShape.transform(AffineTransform.getRotateInstance(rotation, p.getX(), p.getY()));

                }

                return myFShape;

        }

        public void setCartographicSize(double cartographicSize, FShape shp) {

                setFontSize(cartographicSize);

        }

        public double toCartographicSize(ViewPort viewPort, double dpi, FShape shp) {

                double oldSize = getFont().getSize();

                setCartographicSize(getCartographicSize(

                                                                viewPort,

                                                                dpi,

                                                                shp),

                                                        shp);

                return oldSize;

        }

        public double getCartographicSize(ViewPort viewPort, double dpi, FShape shp) {

                return CartographicSupportToolkit.

                                        getCartographicLength(this,

                                                                                  getFont().getSize(),

                                                                                  viewPort,

                                                                                  dpi);

        }

}