Revision 1083 org.gvsig.raster.wms/trunk/org.gvsig.raster.wms/org.gvsig.raster.wms.io/src/main/java/org/gvsig/raster/wms/io/WMSProvider.java
| WMSProvider.java | ||
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*/ |
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package org.gvsig.raster.wms.io; |
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import java.awt.Image; |
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import java.awt.geom.AffineTransform; |
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import java.awt.geom.NoninvertibleTransformException; |
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import java.awt.geom.Point2D; |
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import java.util.Hashtable; |
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import java.util.Vector; |
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import javax.swing.ImageIcon; |
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import org.gvsig.compat.net.ICancellable; |
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import org.gvsig.fmap.dal.DALLocator; |
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import org.gvsig.fmap.dal.DataStore; |
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import org.gvsig.tools.ToolsLocator; |
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import org.gvsig.tools.task.Cancellable; |
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import org.gvsig.tools.task.TaskStatus; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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/** |
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* Clase que representa al driver de acceso a datos de wms. |
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* |
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public static String NAME = "Wms Store"; |
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public static String DESCRIPTION = "Wms Raster file"; |
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public static final String METADATA_DEFINITION_NAME = "WmsStore"; |
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private static final Logger logger = LoggerFactory.getLogger(WMSProvider.class); |
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private static final int FIXED_SIZE = 800; |
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private Extent viewRequest = null; |
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private static Hashtable<String, WMSConnector> |
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setDataType(new int[]{Buffer.TYPE_BYTE, Buffer.TYPE_BYTE, Buffer.TYPE_BYTE});
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bandCount = 3; |
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open = true; |
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try {
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loadInitialInfo(); |
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} catch (RasterDriverException e) {
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logger.info("Loaded default values in WMS provider", e);
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} |
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} |
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/** |
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* When a WMS provider is opened the information of data type, number of bands and transparency |
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* is not available. Only after the first time a raster has been downloaded it can be know. |
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* @param newDataType |
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* @param buf |
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* @param bandList |
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* @return |
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* @throws RasterDriverException |
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*/ |
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private void loadInitialInfo() throws RasterDriverException {
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WMSDataParametersImpl p = (WMSDataParametersImpl)parameters; |
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Extent ext = getExtent(); |
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Rectangle2D bBox = ext.toRectangle2D(); |
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int w = 0; |
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int h = 0; |
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if(ext.width() > ext.height()) {
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w = 200; |
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h = (int)((ext.height() * w) / ext.width()); |
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} else {
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h = 200; |
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w = (int)((ext.width() * h) / ext.height()); |
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} |
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p.setWidth(w); |
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p.setHeight(h); |
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p.setExtent(bBox); |
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WMSStatus wmsStatus = loadWMSStatus(bBox); |
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lastRequest = downloadFile(wmsStatus, ext.getULX(), ext.getULY(), ext.getLRX(), ext.getLRY(), w, h); |
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DefaultRasterProvider driver; |
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try {
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driver = DefaultProviderServices.loadProvider(lastRequest); |
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setDataType(driver.getDataType()); |
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bandCount = driver.getBandCount(); |
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if(bandCount > 3) {
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getColorInterpretation().setColorInterpValue(3, DataStoreColorInterpretation.ALPHA_BAND); |
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getTransparency().setTransparencyBand(3); |
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} |
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driver.close(); |
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} catch (ProviderNotRegisteredException e) {
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throw new RasterDriverException("", e);
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} catch (InitializeException e) {
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throw new RasterDriverException("", e);
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} |
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} |
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public static final WMSConnector getConnectorFromURL(URL url) throws IOException {
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WMSConnector drv = (WMSConnector) drivers.get(url.toString()); |
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if (drv == null) {
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} |
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} |
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public Image getImageLegend() {
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try {
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if (getConnector().hasLegendGraphic()) {
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WMSStatus wmsStatus = loadWMSStatus(getExtent().toRectangle2D()); |
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wmsStatus.setOnlineResource((String) getParameters().getOnlineResource().get("GetLegendGraphic"));
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File file = getConnector().getLegendGraphic(wmsStatus, getParameters().getLayerQuery(), null); |
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Image img = null; |
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if ((file != null) && (file.length() > 0)) {
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img = new ImageIcon(file.getAbsolutePath()).getImage(); |
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} |
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return img; |
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} |
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} catch (Exception e) {
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logger.info("Problems in GetLegendGraphic", e);
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} |
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return null; |
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} |
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/* |
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* (non-Javadoc) |
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* @see org.gvsig.raster.impl.provider.DefaultRasterProvider#getBlockSize() |
Also available in: Unified diff