svn-gvsig-desktop / tags / v2_0_0_Build_2060 / libraries / libFMap_mapcontext / src / org / gvsig / fmap / mapcontext / impl / DefaultMapContextDrawer.java @ 39366
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package org.gvsig.fmap.mapcontext.impl; |
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import java.awt.Graphics2D; |
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import java.awt.geom.AffineTransform; |
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import java.awt.image.BufferedImage; |
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import java.util.ArrayList; |
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import java.util.Iterator; |
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import java.util.List; |
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import java.util.NoSuchElementException; |
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import org.gvsig.compat.CompatLocator; |
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import org.gvsig.compat.print.PrintAttributes; |
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import org.gvsig.fmap.dal.exception.ReadException; |
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import org.gvsig.fmap.geom.primitive.Envelope; |
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import org.gvsig.fmap.mapcontext.MapContext; |
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import org.gvsig.fmap.mapcontext.MapContextDrawer; |
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import org.gvsig.fmap.mapcontext.ViewPort; |
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import org.gvsig.fmap.mapcontext.layers.FLayer; |
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import org.gvsig.fmap.mapcontext.layers.FLayerHidesArea; |
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import org.gvsig.fmap.mapcontext.layers.FLayers; |
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import org.gvsig.fmap.mapcontext.layers.LayerDrawEvent; |
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import org.gvsig.fmap.mapcontext.layers.LayersIterator; |
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import org.gvsig.fmap.mapcontext.layers.operations.ComposedLayer; |
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import org.gvsig.fmap.mapcontext.layers.operations.LayerCollection; |
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import org.gvsig.fmap.mapcontext.layers.vectorial.GraphicLayer; |
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import org.gvsig.fmap.mapcontext.rendering.legend.styling.ILabelable; |
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import org.gvsig.tools.task.Cancellable; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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public class DefaultMapContextDrawer implements MapContextDrawer { |
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private static final Logger LOG = LoggerFactory |
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.getLogger(DefaultMapContextDrawer.class); |
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|
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private MapContext mapContext = null; |
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private ViewPort viewPort = null; |
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private CachedImage cachedImage = null; |
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private DrawList previousDrawList = null; |
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|
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protected void checkInitialized() { |
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if (mapContext == null || viewPort == null) { |
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throw new IllegalStateException( |
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"MapContext and ViewPort must be set");
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} |
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} |
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|
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public void draw(FLayers root, BufferedImage image, Graphics2D g, |
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Cancellable cancel, double scale) throws ReadException { |
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this.checkInitialized();
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|
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// With viewport changes all layers must be redrawn, discard cache
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if (cachedImage != null && cachedImage.hasChangedViewPortDrawVersion()) { |
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cachedImage = null;
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} |
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AffineTransform aux_at = null; |
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if (isValidFullCachedImage()) {
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aux_at = g.getTransform(); |
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g.drawImage( |
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cachedImage.getFullDrawnImage(), |
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(int) -aux_at.getTranslateX(),
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(int) -aux_at.getTranslateY(),
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null);
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LOG.debug("Drawn full image from the cache, all layers cached");
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return;
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} |
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DrawList drawList = this.createDrawList(root, cancel, scale);
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if (drawList == null || drawList.size() == 0) { |
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return;
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} |
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if (cancel.isCanceled()) {
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cachedImage = null;
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return;
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} |
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int firstLayerToDraw;
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int lastLayerToDraw;
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if (isValidPartialCachedImage(drawList)) {
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firstLayerToDraw = 0;
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lastLayerToDraw = cachedImage.getLastDrawnLayerPosition(); |
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aux_at = g.getTransform(); |
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g.drawImage( |
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cachedImage.getPartialDrawnImage(), |
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(int) -aux_at.getTranslateX(),
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(int) -aux_at.getTranslateY(),
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null);
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cachedImage.updateVersions(mapContext, viewPort); |
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LOG.debug("Reused image of cached layers from 0 to {}",
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new Integer(lastLayerToDraw)); |
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} else {
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if (cachedImage == null) { |
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cachedImage = new CachedImage();
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// Draw all layers
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firstLayerToDraw = 0;
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//lastLayerToDraw = drawList.getLayerCount() - 1;
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lastLayerToDraw = drawList.getLastLayerVisible(viewPort); |
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} else {
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// Draw the first group of layers without changes to be cached
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// next time
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firstLayerToDraw = 0;
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int firstChangedLayer = drawList.getFirstChangedLayer();
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// If negative nothing has changed, so draw all the layers
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lastLayerToDraw = firstChangedLayer < 0 ? drawList
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.getLayerCount() - 1 : firstChangedLayer - 1; |
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} |
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drawList.drawLayers(image, g, firstLayerToDraw, lastLayerToDraw, |
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cancel, scale); |
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cachedImage.setPartialDrawnImage(image, mapContext, viewPort, |
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lastLayerToDraw); |
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} |
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if (cancel.isCanceled()) {
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cachedImage = null;
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return;
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} |
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// Draw the second group of layers not cached
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firstLayerToDraw = lastLayerToDraw + 1;
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lastLayerToDraw = drawList.getLayerCount() - 1;
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drawList.drawLayers(image, g, firstLayerToDraw, lastLayerToDraw, |
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cancel, scale); |
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cachedImage.setFullDrawnImage(image); |
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this.previousDrawList = drawList;
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} |
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private boolean isValidPartialCachedImage(DrawList drawList) { |
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return cachedImage != null |
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&& cachedImage.isValidPartialDrawnImage(mapContext, drawList); |
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} |
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private boolean isValidFullCachedImage() { |
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return cachedImage != null |
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&& cachedImage.isValidFullDrawnImage(mapContext); |
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} |
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private void print(Object layerOrComposed, Graphics2D g, |
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Cancellable cancel, double scale, PrintAttributes properties)
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throws ReadException {
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ILabelable labelable = null;
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ILabelable tmp = null;
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if (layerOrComposed instanceof ILabelable) { |
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tmp = (ILabelable) layerOrComposed; |
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if (tmp.isLabeled() && tmp.getLabelingStrategy() != null |
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&& tmp.getLabelingStrategy().shouldDrawLabels(scale)) {
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labelable = tmp; |
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} |
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} |
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if (layerOrComposed instanceof FLayer) { |
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FLayer layer = (FLayer) layerOrComposed; |
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layer.print(g, viewPort, cancel, scale, properties); |
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} else {
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ComposedLayer composed = (ComposedLayer) layerOrComposed; |
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composed.print(g, viewPort, cancel, scale, properties); |
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} |
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if (labelable != null) { |
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labelable.printLabels(g, viewPort, cancel, scale, properties); |
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} |
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} |
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public void setMapContext(MapContext mapContext) { |
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if (this.mapContext == mapContext) { |
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return;
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} |
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this.clean();
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this.mapContext = mapContext;
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} |
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public void setViewPort(ViewPort viewPort) { |
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if (this.viewPort == viewPort) { |
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return;
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} |
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this.clean();
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this.viewPort = viewPort;
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} |
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protected void clean() { |
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this.cachedImage = null; |
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} |
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public class CachedImage { |
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private BufferedImage partialDrawnImage; |
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private BufferedImage fullDrawnImage; |
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private long lastMapContextVersion; |
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private long lastViewPortVersion; |
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private int lastDrawnLayerPosition; |
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public void setPartialDrawnImage(BufferedImage partialDrawnImage, |
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MapContext mapContext, ViewPort viewPort, |
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int lastDrawnLayerPosition) {
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this.partialDrawnImage = CompatLocator.getGraphicsUtils()
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.copyBufferedImage(partialDrawnImage); |
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this.lastDrawnLayerPosition = lastDrawnLayerPosition;
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updateVersions(mapContext, viewPort); |
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} |
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public void updateVersions(MapContext mapContext, ViewPort viewPort) { |
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this.lastMapContextVersion = mapContext.getDrawVersion();
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this.lastViewPortVersion = viewPort.getDrawVersion();
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} |
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public void setFullDrawnImage(BufferedImage fullDrawnImage) { |
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this.fullDrawnImage = CompatLocator.getGraphicsUtils()
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.copyBufferedImage(fullDrawnImage); |
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} |
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public BufferedImage getPartialDrawnImage() { |
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return partialDrawnImage;
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} |
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public BufferedImage getFullDrawnImage() { |
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return fullDrawnImage;
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} |
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public long getMapContextVersion() { |
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return lastMapContextVersion;
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} |
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public int getLastDrawnLayerPosition() { |
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return this.lastDrawnLayerPosition; |
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} |
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public boolean isValidFullDrawnImage(MapContext context) { |
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// If the MapContext version has not changed, there are not any
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// changes that require redrawing any of the layers.
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return fullDrawnImage != null && !hasChangedMapContextDrawVersion(); |
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} |
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public boolean hasChangedMapContextDrawVersion() { |
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// This change detects changes in layers and the viewport also
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return mapContext.getDrawVersion() != this.lastMapContextVersion; |
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} |
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public boolean hasChangedViewPortDrawVersion() { |
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// This change detects changes in the viewport
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return viewPort.getDrawVersion() != this.lastViewPortVersion; |
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} |
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public boolean isValidPartialDrawnImage(MapContext context, |
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DrawList drawList) {
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if (!hasChangedMapContextDrawVersion()) {
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// Nothing has changed
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return true; |
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} |
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if (partialDrawnImage == null || hasChangedViewPortDrawVersion()) { |
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// No image available or changes in view port
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return false; |
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} |
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if (drawList.size() < lastDrawnLayerPosition + 1) { |
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// New list has fewer layers than before
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return false; |
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} |
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// There is any change in the layers drawn in the partial drawn
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// image?
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return drawList.getFirstChangedLayer() > lastDrawnLayerPosition;
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} |
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} |
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public class DrawList { |
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private List layers = new ArrayList(); |
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private List all = new ArrayList(); |
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private List versions = new ArrayList(); |
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private DrawList previosList = null; |
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private int firstLayerChanged = -1; |
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public DrawList() {
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} |
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public DrawList(DrawList previousList) {
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if (previousList != null) { |
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this.firstLayerChanged = previousList.getLayerCount();
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this.previosList = previousList;
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} |
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} |
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public int getLayerCount() { |
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return this.layers.size(); |
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} |
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public int getLastLayerVisible(ViewPort viewPort) { |
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Envelope area = viewPort.getAdjustedEnvelope(); |
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for( int n=0; n<this.layers.size()-1; n++ ) { |
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FLayer layer = (FLayer) this.layers.get(n);
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if( layer instanceof FLayerHidesArea ) { |
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if( ((FLayerHidesArea)(layer)).hidesThisArea(area) ) {
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return n;
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} |
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} |
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} |
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return this.layers.size()-1; |
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} |
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private boolean hasChanged(FLayer layer, int pos) { |
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FLayer previous = (FLayer) this.previosList.layers.get(pos);
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// String previousName = previous.getName();
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// String layerName = layer.getName();
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if (previous != layer) {
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return true; |
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} |
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long previousVersion = ((Long) this.previosList.versions.get(pos)) |
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.longValue(); |
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long layerVersion = layer.getDrawVersion();
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return previousVersion != layerVersion;
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} |
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public void add(Object obj) { |
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if (obj instanceof FLayer) { |
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FLayer layer = (FLayer) obj; |
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int curIndex = this.layers.size(); |
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if (this.firstLayerChanged >= curIndex) { |
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if (this.previosList.getLayerCount() > curIndex) { |
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if (this.hasChanged(layer, curIndex)) { |
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this.firstLayerChanged = curIndex;
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} |
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} else if (this.previosList.getLayerCount() == curIndex) { |
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this.firstLayerChanged = curIndex;
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} |
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} |
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this.layers.add(layer);
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this.versions.add(new Long(layer.getDrawVersion())); |
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} else if (!(obj instanceof LayersGroupEvent)) { |
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throw new UnsupportedOperationException(); |
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} |
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this.all.add(obj);
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} |
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public int size() { |
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return this.all.size(); |
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} |
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public int getFirstChangedLayer() { |
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if (this.firstLayerChanged > this.layers.size()) { |
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this.firstLayerChanged = this.layers.size(); |
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} |
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return this.firstLayerChanged; |
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} |
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public FLayer getLayer(int pos) { |
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return (FLayer) this.layers.get(pos); |
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} |
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public Object get(int pos) { |
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return this.all.get(pos); |
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} |
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public void drawLayers(BufferedImage image, Graphics2D g, |
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int firstLayerToDraw, int lastLayerToDraw, Cancellable cancel, |
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double scale) throws ReadException { |
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if (firstLayerToDraw > lastLayerToDraw) {
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LOG.debug("Nothing to draw");
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return;
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} |
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// Find the real layer positions excluding LayersGroupEvents
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FLayer firstLayer = (FLayer) layers.get(firstLayerToDraw); |
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int firstLayerPos = all.indexOf(firstLayer);
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// Look if it belongs to a group and start it
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if (firstLayerPos > 0) { |
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for (int i = firstLayerPos - 1; i > 0; i++) { |
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Object group = all.get(i);
|
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if (group instanceof LayersGroupEvent) { |
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LayersGroupEvent event = (LayersGroupEvent) group; |
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if (event.type == LayersGroupEvent.IN_Event) {
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event.group.beginDraw(g, viewPort); |
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} |
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break;
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} |
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} |
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} |
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FLayer lastLayer = (FLayer) layers.get(lastLayerToDraw); |
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int lastLayerPos = all.indexOf(lastLayer);
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LOG.debug("Drawing from layer {} in position (layers: {}, all: {})"
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+ " to layer {} in position (layers: {}, all: {})",
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new Object[] { firstLayer, new Integer(firstLayerToDraw), |
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new Integer(firstLayerPos), lastLayer, |
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new Integer(lastLayerToDraw), |
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new Integer(lastLayerPos) }); |
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ComposedLayer composed = null;
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for (int pos = firstLayerPos; pos <= lastLayerPos; pos++) { |
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if (cancel.isCanceled()) {
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return;
|
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} |
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|
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Object layerOrGroup = get(pos);
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|
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// Group drawing events management
|
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if (layerOrGroup instanceof LayersGroupEvent) { |
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LayersGroupEvent event = (LayersGroupEvent) layerOrGroup; |
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if (event.type == LayersGroupEvent.IN_Event) {
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event.group.beginDraw(g, viewPort); |
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} else {
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event.group.endDraw(g, viewPort); |
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} |
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} else {
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FLayer layer = (FLayer) layerOrGroup; |
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if (composed != null && composed.canAdd(layer)) { |
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// Previous or current layer could be composed
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// Add current layer
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addToComposedLayer(composed, layer); |
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} else {
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if (composed != null) { |
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// Current layer can't be composed on the previous
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// composedlayer. Draw previous composed
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LOG.debug("Drawing composed layer {} ", composed);
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draw(composed, image, g, cancel, scale); |
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composed = null;
|
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} |
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|
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// Try if the current layer can be composed
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// Create new composed or draw current layer
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composed = layer.newComposedLayer(); |
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if (composed == null) { |
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LOG.debug("Drawing layer {} ", layer);
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draw(layer, image, g, cancel, scale); |
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} else {
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addToComposedLayer(composed, layer); |
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} |
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} |
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} |
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} |
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if (composed != null) { |
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// Draw the pending composed
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draw(composed, image, g, cancel, scale); |
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} |
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|
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// Check if the last layer is the last of a group and close it
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for (int i = lastLayerPos + 1; i < all.size(); i++) { |
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Object group = all.get(i);
|
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if (group instanceof LayersGroupEvent) { |
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LayersGroupEvent event = (LayersGroupEvent) group; |
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if (event.type == LayersGroupEvent.OUT_Event) {
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event.group.endDraw(g, viewPort); |
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} |
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break;
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} |
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} |
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} |
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|
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private void addToComposedLayer(ComposedLayer composed, FLayer layer) |
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throws ReadException {
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try {
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LOG.debug("Adding layer {} to composed layer ", layer, composed);
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composed.add(layer); |
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} catch (Exception e) { |
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throw new ReadException("DefalutMapContexDrawer exception", e); |
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} |
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} |
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|
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private void draw(Object layerOrComposed, BufferedImage image, |
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Graphics2D g, Cancellable cancel, double scale) |
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throws ReadException {
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ILabelable labelable = null;
|
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ILabelable tmp = null;
|
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if (layerOrComposed instanceof ILabelable) { |
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|
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tmp = (ILabelable) layerOrComposed; |
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|
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if (tmp.isLabeled() && tmp.getLabelingStrategy() != null |
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&& tmp.getLabelingStrategy().shouldDrawLabels(scale)) {
|
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labelable = tmp; |
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} |
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} |
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|
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if (layerOrComposed instanceof FLayer) { |
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int beforeDrawEventType;
|
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int afterDrawEventType;
|
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if (layerOrComposed instanceof GraphicLayer) { |
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beforeDrawEventType = LayerDrawEvent.GRAPHICLAYER_BEFORE_DRAW; |
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afterDrawEventType = LayerDrawEvent.GRAPHICLAYER_AFTER_DRAW; |
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} else {
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beforeDrawEventType = LayerDrawEvent.LAYER_BEFORE_DRAW; |
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afterDrawEventType = LayerDrawEvent.LAYER_AFTER_DRAW; |
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} |
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FLayer layer = (FLayer) layerOrComposed; |
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drawLayer(layer, image, g, cancel, scale, beforeDrawEventType, |
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afterDrawEventType); |
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} else {
|
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ComposedLayer composed = (ComposedLayer) layerOrComposed; |
| 501 |
composed.draw(image, g, viewPort, cancel, scale); |
| 502 |
} |
| 503 |
if (labelable != null) { |
| 504 |
labelable.drawLabels(image, g, viewPort, cancel, scale, |
| 505 |
MapContext.getScreenDPI()); |
| 506 |
} |
| 507 |
|
| 508 |
} |
| 509 |
|
| 510 |
protected void drawLayer(FLayer layer, BufferedImage image, |
| 511 |
Graphics2D g, Cancellable cancel, double scale, |
| 512 |
int beforeDrawEventType, int afterDrawEventType) |
| 513 |
throws ReadException {
|
| 514 |
LayerDrawEvent event = new LayerDrawEvent(layer, g, viewPort, beforeDrawEventType);
|
| 515 |
mapContext.fireLayerDrawingEvent(event); |
| 516 |
layer.draw(image, g, viewPort, cancel, scale); |
| 517 |
event = new LayerDrawEvent(layer, g, viewPort, afterDrawEventType);
|
| 518 |
mapContext.fireLayerDrawingEvent(event); |
| 519 |
} |
| 520 |
|
| 521 |
} |
| 522 |
|
| 523 |
private class SimpleLayerIterator extends LayersIterator { |
| 524 |
|
| 525 |
public SimpleLayerIterator(FLayer layer) {
|
| 526 |
this.appendLayer(layer);
|
| 527 |
} |
| 528 |
|
| 529 |
public boolean evaluate(FLayer layer) { |
| 530 |
if (layer instanceof FLayers) { |
| 531 |
return false; |
| 532 |
} |
| 533 |
return layer.isAvailable() && layer.isVisible();
|
| 534 |
} |
| 535 |
|
| 536 |
} |
| 537 |
|
| 538 |
public void dispose() { |
| 539 |
this.mapContext = null; |
| 540 |
this.viewPort = null; |
| 541 |
this.cachedImage = null; |
| 542 |
this.previousDrawList = null; |
| 543 |
} |
| 544 |
|
| 545 |
public void print(FLayers root, Graphics2D g, Cancellable cancel, |
| 546 |
double scale, PrintAttributes properties) throws ReadException { |
| 547 |
this.checkInitialized();
|
| 548 |
|
| 549 |
List printList = this.createPrintList(root, cancel); |
| 550 |
if (cancel.isCanceled()) {
|
| 551 |
return;
|
| 552 |
} |
| 553 |
|
| 554 |
ComposedLayer composed = null;
|
| 555 |
int pos;
|
| 556 |
FLayer layer; |
| 557 |
int layerPos = -1; |
| 558 |
Object obj;
|
| 559 |
LayersGroupEvent event; |
| 560 |
for (pos = 0; pos < printList.size(); pos++) { |
| 561 |
if (cancel.isCanceled()) {
|
| 562 |
return;
|
| 563 |
} |
| 564 |
|
| 565 |
obj = printList.get(pos); |
| 566 |
if (obj instanceof LayersGroupEvent) { |
| 567 |
event = (LayersGroupEvent) obj; |
| 568 |
if (event.type == LayersGroupEvent.IN_Event) {
|
| 569 |
// System.out.println("=======Empiza a pintar grupo de capas "+
|
| 570 |
// ((FLayers)event.group).getName() +"============");
|
| 571 |
event.group.beginDraw(g, viewPort); |
| 572 |
} else {
|
| 573 |
event.group.endDraw(g, viewPort); |
| 574 |
// System.out.println("=======Fin a pintar grupo de capas "+
|
| 575 |
// ((FLayers)event.group).getName() +"============");
|
| 576 |
|
| 577 |
} |
| 578 |
continue;
|
| 579 |
} |
| 580 |
layerPos++; |
| 581 |
|
| 582 |
layer = (FLayer) obj; |
| 583 |
|
| 584 |
// *** Pintado de capa/composicion de capa ***
|
| 585 |
if (composed == null) { |
| 586 |
composed = layer.newComposedLayer(); |
| 587 |
if (composed != null) { |
| 588 |
try {
|
| 589 |
composed.add(layer); |
| 590 |
// System.out.println("=======Imprimiendo composicion de pintado "+
|
| 591 |
// (layerPos-1)+" ============");
|
| 592 |
continue;
|
| 593 |
} catch (Exception e) { |
| 594 |
throw new ReadException( |
| 595 |
"DefaultMapContexDrawer exception", e);
|
| 596 |
} |
| 597 |
} |
| 598 |
} else {
|
| 599 |
if (composed.canAdd(layer)) {
|
| 600 |
try {
|
| 601 |
composed.add(layer); |
| 602 |
// System.out.println("=== a?adiendo a composicion de pintado "+
|
| 603 |
// layerPos+ " "+layer.getName());
|
| 604 |
continue;
|
| 605 |
} catch (Exception e) { |
| 606 |
throw new ReadException( |
| 607 |
"DefaultMapContexDrawer exception", e);
|
| 608 |
} |
| 609 |
} else {
|
| 610 |
// System.out.println("=======Imprimiendo composicion de pintado "+
|
| 611 |
// (layerPos-1)+" ============");
|
| 612 |
this.print(composed, g, cancel, scale, properties);
|
| 613 |
// composed.print( g, viewPort, cancel, scale,properties);
|
| 614 |
composed = layer.newComposedLayer(); |
| 615 |
if (composed != null) { |
| 616 |
try {
|
| 617 |
composed.add(layer); |
| 618 |
// System.out.println("=== a?adiendo a composicion de pintado "+
|
| 619 |
// layerPos+ " "+layer.getName());
|
| 620 |
continue;
|
| 621 |
} catch (Exception e) { |
| 622 |
throw new ReadException( |
| 623 |
"DefaultMapContexDrawer exception", e);
|
| 624 |
} |
| 625 |
} |
| 626 |
} |
| 627 |
} |
| 628 |
// System.out.println("=== imprimiendo "+ layerPos+
|
| 629 |
// " "+layer.getName());
|
| 630 |
this.print(layer, g, cancel, scale, properties);
|
| 631 |
// layer.print(g, viewPort, cancel, scale,properties);
|
| 632 |
// *** Pintado de capa/composicion de capa ***
|
| 633 |
if (composed != null) { |
| 634 |
// si la composicion no se ha pintado la pintamos
|
| 635 |
// System.out.println("=======Imprimiendo composicion de pintado "+
|
| 636 |
// (layerPos-1)+" (ultimo) ============");
|
| 637 |
this.print(composed, g, cancel, scale, properties);
|
| 638 |
// composed.print(g, viewPort, cancel, scale, properties);
|
| 639 |
composed = null;
|
| 640 |
} |
| 641 |
} |
| 642 |
|
| 643 |
} |
| 644 |
|
| 645 |
private DrawList createDrawList(FLayers root, Cancellable cancel,
|
| 646 |
double scale) {
|
| 647 |
DrawList result = new DrawList(this.previousDrawList); |
| 648 |
Iterator iter = new MyLayerIterator((FLayer) root, scale); |
| 649 |
while (iter.hasNext()) {
|
| 650 |
if (cancel.isCanceled()) {
|
| 651 |
return null; |
| 652 |
} |
| 653 |
result.add(iter.next()); |
| 654 |
} |
| 655 |
if (cancel.isCanceled()) {
|
| 656 |
return null; |
| 657 |
} |
| 658 |
// Take into account also the Graphic layer
|
| 659 |
result.add(mapContext.getGraphicsLayer()); |
| 660 |
return result;
|
| 661 |
} |
| 662 |
|
| 663 |
private List createPrintList(FLayers root, Cancellable cancel) { |
| 664 |
List result = new ArrayList(); |
| 665 |
Iterator iter = new SimpleLayerIterator((FLayer) root); |
| 666 |
while (iter.hasNext()) {
|
| 667 |
if (cancel.isCanceled()) {
|
| 668 |
return null; |
| 669 |
} |
| 670 |
result.add(iter.next()); |
| 671 |
} |
| 672 |
return result;
|
| 673 |
} |
| 674 |
|
| 675 |
private class MyLayerIterator implements Iterator { |
| 676 |
List layersList = new ArrayList(); |
| 677 |
int index = 0; |
| 678 |
double scale = 0; |
| 679 |
|
| 680 |
public MyLayerIterator(FLayer layer, double scale) { |
| 681 |
this.scale = scale;
|
| 682 |
this.appendLayer(layer);
|
| 683 |
} |
| 684 |
|
| 685 |
protected void appendLayer(FLayer layer) { |
| 686 |
if (layer instanceof LayerCollection) { |
| 687 |
appendLayers((LayerCollection) layer); |
| 688 |
} else if (this.evaluate(layer)) { |
| 689 |
layersList.add(layer); |
| 690 |
} |
| 691 |
} |
| 692 |
|
| 693 |
private void appendLayers(LayerCollection layers) { |
| 694 |
int i;
|
| 695 |
layersList.add(new LayersGroupEvent(layers,
|
| 696 |
LayersGroupEvent.IN_Event)); |
| 697 |
for (i = 0; i < layers.getLayersCount(); i++) { |
| 698 |
appendLayer(layers.getLayer(i)); |
| 699 |
} |
| 700 |
layersList.add(new LayersGroupEvent(layers,
|
| 701 |
LayersGroupEvent.OUT_Event)); |
| 702 |
} |
| 703 |
|
| 704 |
public void remove() { |
| 705 |
throw new UnsupportedOperationException(); |
| 706 |
} |
| 707 |
|
| 708 |
public boolean hasNext() { |
| 709 |
return index < layersList.size();
|
| 710 |
} |
| 711 |
|
| 712 |
public Object next() { |
| 713 |
if (!this.hasNext()) { |
| 714 |
throw new NoSuchElementException(); |
| 715 |
} |
| 716 |
Object aux = layersList.get(index);
|
| 717 |
index++; |
| 718 |
return aux;
|
| 719 |
} |
| 720 |
|
| 721 |
public boolean evaluate(FLayer layer) { |
| 722 |
if (layer instanceof LayerCollection) { |
| 723 |
return false; |
| 724 |
} |
| 725 |
return layer.isAvailable() && layer.isVisible()
|
| 726 |
&& layer.isWithinScale(this.scale);
|
| 727 |
} |
| 728 |
|
| 729 |
} |
| 730 |
|
| 731 |
private class LayersGroupEvent { |
| 732 |
public static final String IN_Event = "in"; |
| 733 |
public static final String OUT_Event = "Out"; |
| 734 |
|
| 735 |
private LayerCollection group = null; |
| 736 |
private String type = IN_Event; |
| 737 |
|
| 738 |
public LayersGroupEvent(LayerCollection group, String type) { |
| 739 |
this.group = group;
|
| 740 |
this.type = type;
|
| 741 |
} |
| 742 |
|
| 743 |
public String getType() { |
| 744 |
return type;
|
| 745 |
} |
| 746 |
|
| 747 |
public LayerCollection getGroup() {
|
| 748 |
return group;
|
| 749 |
} |
| 750 |
} |
| 751 |
|
| 752 |
} |