| 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.

*/

package org.gvsig.symbology.gui.styling;

import java.awt.Dimension;

import java.awt.Graphics2D;

import java.awt.geom.Rectangle2D;

import java.awt.image.BufferedImage;

import java.io.File;

import java.util.Stack;

import javax.swing.JFrame;

import org.cresques.cts.IProjection;

import org.gvsig.gui.beans.imagenavigator.IClientImageNavigator;

import org.gvsig.gui.beans.imagenavigator.ImageNavigator;

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

import com.iver.cit.gvsig.exceptions.expansionfile.ExpansionFileReadException;

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

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

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

import com.iver.cit.gvsig.fmap.crs.CRSFactory;

import com.iver.cit.gvsig.fmap.layers.FLayer;

import com.iver.cit.gvsig.fmap.layers.LayerFactory;

import com.iver.cit.gvsig.fmap.operations.Cancel;

public class LayerPreview extends ImageNavigator implements IClientImageNavigator {

        private static final long serialVersionUID = -7554322442540714114L;

        private FLayer layer = null;

        private ViewPort vp;

        private Stack<Cancel> cancels = new Stack<Cancel>();

        public LayerPreview() {

                super(null);

                setClientImageNavigator(this);

        }

        public void setLayer(FLayer layer) throws ExpansionFileReadException, ReadDriverException {

                this.layer = layer;

                if (layer != null) {

                        vp = new ViewPort(layer.getProjection());

                        Rectangle2D b = layer.getFullExtent();

                        setViewDimensions(b.getMinX(), b.getMaxY(), b.getMaxX(), b.getMinY());

                }

                updateBuffer();

                setEnabled(true);

        }

        public static void main(String[] args) {

                JFrame jFrame = new JFrame("test");

                String fwAndamiDriverPath = "../_fwAndami/gvSIG/extensiones/com.iver.cit.gvsig/drivers";

                IProjection PROJ = CRSFactory.getCRS("EPSG:23030");

                try {

                        LayerFactory.setDriversPath(new File(fwAndamiDriverPath).getAbsolutePath());

                        LayerPreview prev = new LayerPreview();

                        prev.setLayer(LayerFactory.

                                        createLayer(

                                                        "line",

                                                        "gvSIG shp driver",

                                                        new File("/home/jaume/Documents/Cartografia/cv_300_polygons.shp"),

                                                        PROJ));

                        jFrame.setSize(new Dimension(598, 167));

                        jFrame.setContentPane(prev);

                        jFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

                        jFrame.setVisible(true);

                } catch (Exception e) {

                        e.printStackTrace();

                }

        }

        public void drawImage(Graphics2D g, double x1, double y1, double x2, double y2, double zoom, int width, int height) {

                Cancel c = new Cancel();

                while (!cancels.isEmpty()) cancels.pop().setCanceled(true);

                cancels.push(c);

                if (layer == null || width <= 0 || height <= 0 || vp == null)

                        return;

                vp.setExtent(new Rectangle2D.Double(x1, y2, x2-x1, y1-y2));

                vp.setImageSize(new Dimension(width, height));

                BufferedImage bi = new BufferedImage(width, height, BufferedImage.TYPE_4BYTE_ABGR);

//                double scale = vp.getScale();

                double scale = layer.getMapContext().getScaleView();

                try {

                        layer.draw(bi, g, vp, c, scale);

                        if (layer instanceof ILabelable && ((ILabelable) layer).isLabeled()) {

                                ((ILabelable) layer).drawLabels(bi, g, vp, c, scale, MapContext.getScreenDPI());

                        }

                } catch (ReadDriverException e) {

                        // TODO Auto-generated catch block

                        e.printStackTrace();

                }

        }

}