svn-gvsig-desktop / branches / v2_0_0_prep / libraries / libFMap_mapcontext / src / org / gvsig / fmap / mapcontext / impl / DefaultMapContextDrawer.java @ 38200
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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.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.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.FLayers; |
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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.rendering.legend.styling.ILabelable; |
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import org.gvsig.tools.task.Cancellable; |
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public class DefaultMapContextDrawer implements MapContextDrawer { |
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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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public DefaultMapContextDrawer() {
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|
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} |
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protected void checkIntilalized() { |
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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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protected boolean isLayerCacheable(FLayer layer) { |
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return layer.isActive();
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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.checkIntilalized();
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boolean needToPaintAll = false; |
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DrawList drawList = this.createDrawList(root, cancel, scale);
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if (cancel.isCanceled()) {
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return;
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} |
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if (cachedImage == null) { |
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needToPaintAll = true;
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} else if (!cachedImage.isValid(mapContext, viewPort, |
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drawList.getFirstLayerToDraw())) {
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needToPaintAll = true;
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} |
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int firstLayer = 0; |
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if (!needToPaintAll) {
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firstLayer = cachedImage.getListPosition() + 1;
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// System.out.println("=======Pintando a partir de la pos "+
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// firstLayer+"============");
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g.drawImage(cachedImage.getImage(), 0, 0, null); |
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// System.out.println("=======Pintando imagen ============");
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} else {
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this.cachedImage = null; |
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// System.out.println("=======Pintando todo============");
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} |
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boolean cached = false; |
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ComposedLayer composed = null;
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int pos;
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int layerPos = -1; |
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FLayer layer; |
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Object obj;
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LayersGroupEvent event; |
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for (pos = 0; pos < drawList.size(); pos++) { |
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if (cancel.isCanceled()) {
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return;
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} |
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obj = drawList.get(pos); |
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|
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// *** Gestion de eventos de pintado de grupos ***
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if (obj instanceof LayersGroupEvent) { |
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event = (LayersGroupEvent) obj; |
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if (event.type == LayersGroupEvent.IN_Event) {
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// System.out.println("=======Empiza a pintar grupo de capas "+
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// ((FLayers)event.group).getName() +"============");
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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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// System.out.println("=======Fin a pintar grupo de capas "+
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// ((FLayers)event.group).getName() +"============");
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|
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} |
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continue;
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} |
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layerPos++; |
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if (layerPos < firstLayer) {
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continue;
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} |
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layer = (FLayer) obj; |
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if (cancel.isCanceled()) {
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return;
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} |
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// *** Gestion de cache ***
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if ((!cached) && this.isLayerCacheable(layer)) { |
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if (layerPos > 0) { // La primera capa es la activa, no |
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// cacheamos
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if (cachedImage == null |
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|| cachedImage.getListPosition() < layerPos - 1) {
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if (composed != null) { |
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// si tenemos una composicion de capas, necesitamos
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// pintarlas
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// antes de guardarnos la imagen
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// System.out.println("=======Pintando composicion de pintado "+
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// (layerPos-1)+" (antes de cache)============");
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this.draw(composed, image, g, cancel, scale);
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// composed.draw(image, g, viewPort, cancel, scale);
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composed = null;
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} |
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CachedImage newCached = new CachedImage();
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newCached.setImage(image, mapContext, viewPort, |
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layerPos - 1);
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this.cachedImage = newCached;
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// System.out.println("=======Guardando imagen de la pos "+
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// (layerPos-1)+" ("+ newCached.getListPosition()
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// +")============");
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} |
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} |
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cached = true;
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} |
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if (cancel.isCanceled()) {
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return;
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} |
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if (composed == null) { |
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composed = layer.newComposedLayer(); |
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if (composed != null) { |
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try {
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// System.out.println("=== a?adiendo a composicion de pintado "+
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// layerPos+ " "+layer.getName());
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composed.add(layer); |
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continue;
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} catch (Exception e) { |
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throw new ReadException( |
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"DefalutMapContexDrawer exception", e);
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} |
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} |
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} else {
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if (composed.canAdd(layer)) {
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try {
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// System.out.println("=== a?adiendo a composicion de pintado "+
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// layerPos+ " "+layer.getName());
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composed.add(layer); |
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continue;
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} catch (Exception e) { |
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throw new ReadException( |
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"DefalutMapContexDrawer exception", e);
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} |
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} else {
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// System.out.println("=======Pintando composicion de pintado "+
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// (layerPos-1)+" (cambio composicion)============");
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this.draw(composed, image, g, cancel, scale);
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// composed.draw(image, g, viewPort, cancel, scale);
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composed = layer.newComposedLayer(); |
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if (composed != null) { |
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try {
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// System.out.println("=== a?adiendo a composicion de pintado "+
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// layerPos+ " "+layer.getName());
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composed.add(layer); |
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continue;
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} catch (Exception e) { |
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throw new ReadException( |
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"DefalutMapContexDrawer exception", e);
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} |
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} |
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} |
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} |
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// System.out.println("=== pintando "+ layerPos+
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// " "+layer.getName());
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this.draw(layer, image, g, cancel, scale);
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// layer.draw(image, g, viewPort, cancel, scale);
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} |
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if (composed != null) { |
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// si la composicion no se ha pintado la pintamos
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// System.out.println("=======Pintando composicion de pintado "+
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// (layerPos-1)+" (ultimo)============");
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this.draw(composed, image, g, cancel, scale);
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// composed.draw(image, g, viewPort, cancel, scale);
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} |
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if (cancel.isCanceled()) {
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return;
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} |
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this.previousDrawList = drawList;
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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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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.draw(image, g, viewPort, cancel, scale); |
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} else {
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ComposedLayer composed = (ComposedLayer) layerOrComposed; |
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composed.draw(image, g, viewPort, cancel, scale); |
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} |
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if (labelable != null) { |
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labelable.drawLabels(image, g, viewPort, cancel, scale, |
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MapContext.getScreenDPI()); |
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} |
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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 image; |
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private long mapContextVersion; |
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private long viewPortVersion; |
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private int listPosition; |
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public void setImage(BufferedImage img, MapContext mapContext, |
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ViewPort viewPort, int pos) {
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image = CompatLocator.getGraphicsUtils().copyBufferedImage(img); |
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this.mapContextVersion = mapContext.getDrawVersion();
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this.viewPortVersion = viewPort.getDrawVersion();
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this.listPosition = pos;
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} |
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public BufferedImage getImage() { |
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return image;
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} |
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public long getMapContextVersion() { |
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return mapContextVersion;
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} |
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public long getViewPortVersion() { |
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return viewPortVersion;
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} |
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public int getListPosition() { |
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return this.listPosition; |
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} |
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public boolean isValid(MapContext context, ViewPort viewPort, |
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int firstLayerToDraw) {
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if (viewPort.getDrawVersion() > this.viewPortVersion) { |
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return false; |
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} |
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if (firstLayerToDraw <= this.listPosition) { |
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return false; |
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} |
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return true; |
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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 firstLayerToDraw = -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.firstLayerToDraw = 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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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.firstLayerToDraw >= curIndex) { |
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if (this.previosList.getLayerCount() > curIndex) { |
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if (this.hasChanged(layer, curIndex)) { |
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this.firstLayerToDraw = curIndex;
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} |
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} else if (this.previosList.getLayerCount() == curIndex) { |
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this.firstLayerToDraw = 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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|
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public int size() { |
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return this.all.size(); |
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} |
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|
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public int getFirstLayerToDraw() { |
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if (this.firstLayerToDraw > this.layers.size()) { |
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this.firstLayerToDraw = this.layers.size(); |
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} |
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return this.firstLayerToDraw; |
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} |
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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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|
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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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|
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} |
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private class SimpleLayerIterator extends LayersIterator { |
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|
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public SimpleLayerIterator(FLayer layer) {
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this.appendLayer(layer);
|
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} |
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|
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public boolean evaluate(FLayer layer) { |
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if (layer instanceof FLayers) { |
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return false; |
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} |
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return layer.isAvailable() && layer.isVisible();
|
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} |
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|
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} |
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|
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public void dispose() { |
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this.mapContext = null; |
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this.viewPort = null; |
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this.cachedImage = null; |
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this.previousDrawList = null; |
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} |
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|
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public void print(FLayers root, Graphics2D g, Cancellable cancel, |
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double scale, PrintAttributes properties) throws ReadException { |
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this.checkIntilalized();
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List printList = this.createPrintList(root, cancel); |
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if (cancel.isCanceled()) {
|
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return;
|
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} |
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|
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ComposedLayer composed = null;
|
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int pos;
|
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FLayer layer; |
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int layerPos = -1; |
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Object obj;
|
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LayersGroupEvent event; |
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for (pos = 0; pos < printList.size(); 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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obj = printList.get(pos); |
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if (obj instanceof LayersGroupEvent) { |
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event = (LayersGroupEvent) obj; |
| 457 |
if (event.type == LayersGroupEvent.IN_Event) {
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// System.out.println("=======Empiza a pintar grupo de capas "+
|
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// ((FLayers)event.group).getName() +"============");
|
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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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// System.out.println("=======Fin a pintar grupo de capas "+
|
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// ((FLayers)event.group).getName() +"============");
|
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|
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} |
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continue;
|
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} |
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layerPos++; |
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|
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layer = (FLayer) obj; |
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|
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// *** Pintado de capa/composicion de capa ***
|
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if (composed == null) { |
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composed = layer.newComposedLayer(); |
| 476 |
if (composed != null) { |
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try {
|
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composed.add(layer); |
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// System.out.println("=======Imprimiendo composicion de pintado "+
|
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// (layerPos-1)+" ============");
|
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continue;
|
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} catch (Exception e) { |
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throw new ReadException( |
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"DefaultMapContexDrawer exception", e);
|
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} |
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} |
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} else {
|
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if (composed.canAdd(layer)) {
|
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try {
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composed.add(layer); |
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// System.out.println("=== a?adiendo a composicion de pintado "+
|
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// layerPos+ " "+layer.getName());
|
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continue;
|
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} catch (Exception e) { |
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throw new ReadException( |
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"DefaultMapContexDrawer exception", e);
|
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} |
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} else {
|
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// System.out.println("=======Imprimiendo composicion de pintado "+
|
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// (layerPos-1)+" ============");
|
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this.print(composed, g, cancel, scale, properties);
|
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// composed.print( g, viewPort, cancel, scale,properties);
|
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composed = layer.newComposedLayer(); |
| 504 |
if (composed != null) { |
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try {
|
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composed.add(layer); |
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// System.out.println("=== a?adiendo a composicion de pintado "+
|
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// layerPos+ " "+layer.getName());
|
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continue;
|
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} catch (Exception e) { |
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throw new ReadException( |
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"DefaultMapContexDrawer exception", e);
|
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} |
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} |
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} |
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} |
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// System.out.println("=== imprimiendo "+ layerPos+
|
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// " "+layer.getName());
|
| 519 |
this.print(layer, g, cancel, scale, properties);
|
| 520 |
// layer.print(g, viewPort, cancel, scale,properties);
|
| 521 |
// *** Pintado de capa/composicion de capa ***
|
| 522 |
if (composed != null) { |
| 523 |
// si la composicion no se ha pintado la pintamos
|
| 524 |
// System.out.println("=======Imprimiendo composicion de pintado "+
|
| 525 |
// (layerPos-1)+" (ultimo) ============");
|
| 526 |
this.print(composed, g, cancel, scale, properties);
|
| 527 |
// composed.print(g, viewPort, cancel, scale, properties);
|
| 528 |
composed = null;
|
| 529 |
} |
| 530 |
} |
| 531 |
|
| 532 |
} |
| 533 |
|
| 534 |
private DrawList createDrawList(FLayers root, Cancellable cancel,
|
| 535 |
double scale) {
|
| 536 |
DrawList result = new DrawList(this.previousDrawList); |
| 537 |
Iterator iter = new MyLayerIterator((FLayer) root, scale); |
| 538 |
while (iter.hasNext()) {
|
| 539 |
if (cancel.isCanceled()) {
|
| 540 |
return null; |
| 541 |
} |
| 542 |
result.add(iter.next()); |
| 543 |
|
| 544 |
} |
| 545 |
|
| 546 |
return result;
|
| 547 |
} |
| 548 |
|
| 549 |
private List createPrintList(FLayers root, Cancellable cancel) { |
| 550 |
List result = new ArrayList(); |
| 551 |
Iterator iter = new SimpleLayerIterator((FLayer) root); |
| 552 |
while (iter.hasNext()) {
|
| 553 |
if (cancel.isCanceled()) {
|
| 554 |
return null; |
| 555 |
} |
| 556 |
result.add(iter.next()); |
| 557 |
} |
| 558 |
return result;
|
| 559 |
} |
| 560 |
|
| 561 |
private class MyLayerIterator implements Iterator { |
| 562 |
ArrayList layersList = new ArrayList(); |
| 563 |
int index = 0; |
| 564 |
double scale = 0; |
| 565 |
|
| 566 |
public MyLayerIterator(FLayer layer, double scale) { |
| 567 |
this.scale = scale;
|
| 568 |
this.appendLayer(layer);
|
| 569 |
} |
| 570 |
|
| 571 |
protected void appendLayer(FLayer layer) { |
| 572 |
if (this.evaluate(layer)) { |
| 573 |
layersList.add(layer); |
| 574 |
} |
| 575 |
if (layer instanceof LayerCollection) { |
| 576 |
appendLayers((LayerCollection) layer); |
| 577 |
} |
| 578 |
} |
| 579 |
|
| 580 |
private void appendLayers(LayerCollection layers) { |
| 581 |
int i;
|
| 582 |
layersList.add(new LayersGroupEvent(layers,
|
| 583 |
LayersGroupEvent.IN_Event)); |
| 584 |
for (i = 0; i < layers.getLayersCount(); i++) { |
| 585 |
appendLayer(layers.getLayer(i)); |
| 586 |
} |
| 587 |
layersList.add(new LayersGroupEvent(layers,
|
| 588 |
LayersGroupEvent.OUT_Event)); |
| 589 |
} |
| 590 |
|
| 591 |
public void remove() { |
| 592 |
throw new UnsupportedOperationException(); |
| 593 |
} |
| 594 |
|
| 595 |
public boolean hasNext() { |
| 596 |
return index < layersList.size();
|
| 597 |
} |
| 598 |
|
| 599 |
public Object next() { |
| 600 |
if (!this.hasNext()) { |
| 601 |
throw new NoSuchElementException(); |
| 602 |
} |
| 603 |
Object aux = layersList.get(index);
|
| 604 |
index++; |
| 605 |
return aux;
|
| 606 |
} |
| 607 |
|
| 608 |
public boolean evaluate(FLayer layer) { |
| 609 |
if (layer instanceof FLayers) { |
| 610 |
return false; |
| 611 |
} |
| 612 |
return layer.isAvailable() && layer.isVisible()
|
| 613 |
&& layer.isWithinScale(this.scale);
|
| 614 |
} |
| 615 |
|
| 616 |
} |
| 617 |
|
| 618 |
private class LayersGroupEvent { |
| 619 |
public static final String IN_Event = "in"; |
| 620 |
public static final String OUT_Event = "Out"; |
| 621 |
|
| 622 |
private LayerCollection group = null; |
| 623 |
private String type = IN_Event; |
| 624 |
|
| 625 |
public LayersGroupEvent(LayerCollection group, String type) { |
| 626 |
this.group = group;
|
| 627 |
this.type = type;
|
| 628 |
} |
| 629 |
|
| 630 |
public String getType() { |
| 631 |
return type;
|
| 632 |
} |
| 633 |
|
| 634 |
public LayerCollection getGroup() {
|
| 635 |
return group;
|
| 636 |
} |
| 637 |
} |
| 638 |
|
| 639 |
} |