root / trunk / libraries / libFMap / src / com / iver / cit / gvsig / fmap / DefaultMapContextDrawer.java @ 36203
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package com.iver.cit.gvsig.fmap; |
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import java.awt.Graphics2D; |
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import java.awt.image.BufferedImage; |
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import java.awt.image.WritableRaster; |
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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 javax.print.attribute.PrintRequestAttributeSet; |
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import com.hardcode.gdbms.driver.exceptions.ReadDriverException; |
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import com.iver.cit.gvsig.fmap.core.ILabelable; |
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import com.iver.cit.gvsig.fmap.layers.FLayer; |
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import com.iver.cit.gvsig.fmap.layers.FLayers; |
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import com.iver.cit.gvsig.fmap.layers.LayersIterator; |
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import com.iver.cit.gvsig.fmap.layers.layerOperations.ComposedLayer; |
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import com.iver.cit.gvsig.fmap.layers.layerOperations.LayerCollection; |
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import com.iver.utiles.swing.threads.Cancellable; |
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|
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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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protected void checkIntilalized(){ |
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if (mapContext == null || viewPort == null){ |
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throw new IllegalStateException("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, Cancellable cancel, |
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double scale) throws ReadDriverException { |
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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, 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 "+ 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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// *** 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 "+ ((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 "+ ((FLayers)event.group).getName() +"============");
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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 cacheamos |
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if (cachedImage==null || cachedImage.getListPosition() < layerPos-1){ |
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if (composed != null){ |
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//si tenemos una composicion de capas, necesitamos pintarlas
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//antes de guardarnos la imagen
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// System.out.println("=======Pintando composicion de pintado "+ (layerPos-1)+" (antes de cache)============");
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this.draw(composed, image, g, cancel, scale, MapContext.getScreenDPI());
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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, layerPos-1);
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this.cachedImage = newCached;
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// System.out.println("=======Guardando imagen de la pos "+ (layerPos-1)+" ("+ newCached.getListPosition() +")============");
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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 "+ 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 ReadDriverException("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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// System.out.println("=== a?adiendo a composicion de pintado "+ 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 ReadDriverException("DefaultMapContexDrawer exception",e); |
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} |
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} else {
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// System.out.println("=======Pintando composicion de pintado "+ (layerPos-1)+" (cambio composicion)============");
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this.draw(composed, image, g, cancel, scale, MapContext.getScreenDPI());
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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 "+ 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 ReadDriverException("DefaultMapContexDrawer exception",e); |
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} } |
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} |
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} |
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// System.out.println("=== pintando "+ layerPos+ " "+layer.getName());
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this.draw(layer, image, g, cancel, scale, MapContext.getScreenDPI());
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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 "+ (layerPos-1)+" (ultimo)============");
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this.draw(composed, image, g, cancel, scale, MapContext.getScreenDPI());
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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, Graphics2D g, Cancellable cancel, |
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double scale, double _dpi) throws ReadDriverException{ |
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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()
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&& 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, _dpi); |
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} |
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} |
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private void print(Object layerOrComposed,Graphics2D g, Cancellable cancel, |
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double scale, PrintRequestAttributeSet properties) throws ReadDriverException{ |
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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()
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&& 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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public 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 image,MapContext mapContext, ViewPort viewPort,int pos) { |
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this.image = new BufferedImage(image.getWidth(), image.getHeight(), image.getType()); |
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WritableRaster w = this.image.getRaster(); |
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image.copyData(w); |
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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,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.layersCount();
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this.previosList=previousList;
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} |
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} |
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public int layersCount() { |
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return this.layers.size(); |
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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)).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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public int size(){ |
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return this.all.size(); |
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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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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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} |
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private class SimpleLayerIterator extends LayersIterator{ |
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public SimpleLayerIterator(FLayer layer) {
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this.appendLayer(layer);
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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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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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/* (non-Javadoc)
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* @see com.iver.cit.gvsig.fmap.MapContextDrawer#print(com.iver.cit.gvsig.fmap.layers.FLayers, java.awt.Graphics2D, com.iver.utiles.swing.threads.Cancellable, double, javax.print.attribute.PrintRequestAttributeSet)
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*/
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public void print(FLayers root, Graphics2D g, Cancellable cancel, |
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double scale, PrintRequestAttributeSet properties) |
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throws ReadDriverException {
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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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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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obj = printList.get(pos); |
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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 "+ ((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 "+ ((FLayers)event.group).getName() +"============");
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} |
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continue;
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} |
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layerPos++; |
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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(); |
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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 "+ (layerPos-1)+" ============");
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continue;
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} catch (Exception e) { |
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throw new ReadDriverException("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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composed.add(layer); |
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// System.out.println("=== a?adiendo a composicion de pintado "+ layerPos+ " "+layer.getName());
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continue;
|
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} catch (Exception e) { |
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throw new ReadDriverException("DefalutMapContexDrawer exception",e); |
478 |
} |
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} else {
|
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// System.out.println("=======Imprimiendo composicion de pintado "+ (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(); |
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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 "+ layerPos+ " "+layer.getName());
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continue;
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} catch (Exception e) { |
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throw new ReadDriverException("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("=== imprimiendo "+ layerPos+ " "+layer.getName());
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this.print(layer, g, cancel, scale, properties);
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// layer.print(g, viewPort, cancel, scale,properties);
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// *** Pintado de capa/composicion de capa ***
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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("=======Imprimiendo composicion de pintado "+ (layerPos-1)+" (ultimo) ============");
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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 = null;
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} |
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} |
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|
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} |
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private DrawList createDrawList(FLayers root,Cancellable cancel,double scale){ |
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DrawList result = new DrawList(this.previousDrawList); |
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Iterator iter = new MyLayerIterator((FLayer)root,scale); |
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while (iter.hasNext()){
|
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if (cancel.isCanceled()){
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return null; |
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} |
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result.add(iter.next()); |
519 |
|
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} |
521 |
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return result;
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} |
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|
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private List createPrintList(FLayers root,Cancellable cancel){ |
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List result = new ArrayList(); |
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Iterator iter = new SimpleLayerIterator((FLayer)root); |
528 |
while (iter.hasNext()){
|
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if (cancel.isCanceled()){
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return null; |
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} |
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result.add(iter.next()); |
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} |
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return result;
|
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} |
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|
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private class MyLayerIterator implements Iterator{ |
538 |
ArrayList layersList =new ArrayList(); |
539 |
int index = 0; |
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double scale=0; |
541 |
|
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|
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public MyLayerIterator(FLayer layer, double scale) { |
544 |
this.scale=scale;
|
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this.appendLayer(layer);
|
546 |
} |
547 |
|
548 |
protected void appendLayer(FLayer layer) { |
549 |
if (this.evaluate(layer)) { |
550 |
layersList.add(layer); |
551 |
} |
552 |
if (layer instanceof LayerCollection) { |
553 |
appendLayers((LayerCollection)layer); |
554 |
} |
555 |
} |
556 |
|
557 |
private void appendLayers(LayerCollection layers) { |
558 |
int i;
|
559 |
layersList.add(new LayersGroupEvent(layers,LayersGroupEvent.IN_Event));
|
560 |
for (i=0;i< layers.getLayersCount();i++) { |
561 |
appendLayer(layers.getLayer(i)); |
562 |
} |
563 |
layersList.add(new LayersGroupEvent(layers,LayersGroupEvent.OUT_Event));
|
564 |
} |
565 |
|
566 |
public void remove() { |
567 |
throw new UnsupportedOperationException(); |
568 |
} |
569 |
|
570 |
public boolean hasNext() { |
571 |
return index < layersList.size();
|
572 |
} |
573 |
|
574 |
public Object next() { |
575 |
if (!this.hasNext()) { |
576 |
throw new NoSuchElementException(); |
577 |
} |
578 |
Object aux = layersList.get(index);
|
579 |
index++; |
580 |
return aux;
|
581 |
} |
582 |
|
583 |
public boolean evaluate(FLayer layer) { |
584 |
if (layer instanceof FLayers) { |
585 |
return false; |
586 |
} |
587 |
return layer.isAvailable() && layer.isVisible() && layer.isWithinScale(this.scale); |
588 |
} |
589 |
|
590 |
} |
591 |
|
592 |
private class LayersGroupEvent { |
593 |
public static final String IN_Event = "in"; |
594 |
public static final String OUT_Event = "Out"; |
595 |
|
596 |
private LayerCollection group=null; |
597 |
private String type = IN_Event; |
598 |
|
599 |
public LayersGroupEvent(LayerCollection group,String type){ |
600 |
this.group =group;
|
601 |
this.type =type;
|
602 |
} |
603 |
|
604 |
|
605 |
public String getType() { |
606 |
return type;
|
607 |
} |
608 |
|
609 |
public LayerCollection getGroup() {
|
610 |
return group;
|
611 |
} |
612 |
} |
613 |
|
614 |
} |