teichmann@5861: /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
teichmann@5861:  * Software engineering by Intevation GmbH
teichmann@5861:  *
teichmann@5993:  * This file is Free Software under the GNU AGPL (>=v3)
teichmann@5861:  * and comes with ABSOLUTELY NO WARRANTY! Check out the
teichmann@5993:  * documentation coming with Dive4Elements River for details.
teichmann@5861:  */
teichmann@5861: 
teichmann@5835: package org.dive4elements.river.client.client.ui.map;
ingo@4329: 
ingo@4329: import java.util.List;
ingo@4329: 
d@9619: import org.dive4elements.river.client.client.FLYSConstants;
d@9619: import org.dive4elements.river.client.shared.MapUtils;
d@9619: import org.dive4elements.river.client.shared.model.AttributedTheme;
d@9619: import org.dive4elements.river.client.shared.model.Theme;
d@9619: import org.dive4elements.river.client.shared.model.ThemeList;
d@9619: 
tom@7958: import com.google.gwt.core.client.GWT;
d@9644: import com.google.gwt.http.client.URL;
d@9619: import com.google.gwt.user.client.ui.Image;
d@9619: import com.google.gwt.user.client.ui.Widget;
ingo@4329: import com.smartgwt.client.types.ImageStyle;
ingo@4329: import com.smartgwt.client.types.VerticalAlignment;
ingo@4329: import com.smartgwt.client.widgets.Canvas;
ingo@4329: import com.smartgwt.client.widgets.Img;
ingo@4329: import com.smartgwt.client.widgets.Label;
ingo@4329: import com.smartgwt.client.widgets.Window;
ingo@4329: import com.smartgwt.client.widgets.layout.HLayout;
ingo@4329: import com.smartgwt.client.widgets.layout.VLayout;
ingo@4329: 
ingo@4329: public class LegendWindow extends Window {
ingo@4329: 
tom@7958:     protected FLYSConstants MSG = GWT.create(FLYSConstants.class);
tom@7958: 
ingo@4329:     private ThemeList themeList;
ingo@4329: 
d@9619:     private final VLayout legendContainer;
ingo@4329: 
d@9619:     public LegendWindow(final ThemeList themeList) {
ingo@4329:         this.themeList = themeList;
ingo@4329:         this.legendContainer = new VLayout();
ingo@4329: 
ingo@4329:         init();
ingo@4329:     }
ingo@4329: 
d@9619:     public void update(final ThemeList themeList) {
ingo@4329:         this.themeList = themeList;
ingo@4329: 
d@9619:         final Canvas[] legends = this.legendContainer.getMembers();
d@9619:         this.legendContainer.removeMembers(legends);
ingo@4329: 
ingo@4329:         addLegends();
ingo@4329:     }
ingo@4329: 
ingo@4329:     private void addLegends() {
d@9619:         final List<Theme> themes = this.themeList.getActiveThemes();
ingo@4329: 
d@9619:         for (final Theme theme : themes) {
ingo@4329:             if (theme.getActive() == 0) {
ingo@4329:                 continue;
ingo@4329:             }
ingo@4329: 
ingo@4329:             if (theme instanceof AttributedTheme) {
d@9619:                 this.legendContainer.addMember(createLegendGraphicsRow((AttributedTheme) theme));
ingo@4329:             }
ingo@4329:         }
ingo@4329:     }
ingo@4329: 
d@9619:     private Canvas createLegendGraphicsRow(final AttributedTheme at) {
d@9619:         final Label label = new Label(at.getDescription());
d@9619:         final Widget img = createLegendGraphics(at);
ingo@4329: 
d@9619:         final HLayout row = new HLayout();
ingo@4329:         row.addMember(label);
ingo@4329:         row.addMember(img);
d@9693:         
d@9693:         String url = "url";
d@9693:         
d@9693:         if (img instanceof Image) {
d@9693:         	setDimensions( row, ((Image) img).getHeight(),  ((Image) img).getWidth());
d@9693:         	url = " url " + ((Image) img).getUrl();
d@9693:         }
d@9693:         else if (img instanceof Img) {
d@9693:         	setDimensions( row, ((Img) img).getHeight(),  ((Img) img).getWidth());
d@9693:         	url = " dataPath " + ((Img) img).getDataPath();
d@9693:         }
d@9693:         else {
d@9693:         	setDimensions( row, 150,  400); //not sure when this is executed
d@9693:         }
d@9693:         String labelText =   at.getDescription() +", height: "+ row.getHeight()+"width: "+ row.getWidth()+" "+url;
d@9693:    //   
d@9693: //        final HLayout row2= new HLayout();
d@9693:         row.addMember(new Label(labelText));
ingo@4329:         return row;
ingo@4329:     }
ingo@4329: 
d@9693: 	private void setDimensions(HLayout row, int height, int width ) {
d@9693: 		final int minHeight = 30;
d@9693: 		row.setHeight(height < minHeight ? minHeight : height);
d@9693: 		row.setWidth(width);
d@9693: 	}
d@9693: 
d@9619:     private Widget createLegendGraphics(final AttributedTheme at) {
ingo@4329: 
d@9619:         final String legend = at.getAttr("legend");
d@9619:         // TEST: final Image img = new Image("/images/FLYS_Donau.png"); (funktioniert!), ebenso FLYSResources.getTest();
d@9619:         if (legend != null && !"".equals(legend)) {
d@9644: 
d@9644:             final String imgUrl = URL.encode(GWT.getHostPageBaseURL() + "images/wms_legend/" + legend);
d@9644: 
d@9644:             final Image image = new Image(imgUrl);
d@9619:             final int imageWidth = image.getWidth();
d@9619:             final int imageHeight = image.getHeight();
d@9619:             final double widthPercent = imageWidth / 400.;
d@9635: 
d@9635:             // removing the limit of 150px height (legend can have an infinite height now,
d@9635:             // as long as the width is less/eq 400px; if the width is >400,
d@9635:             // the legend will be scaled to 400px width; the ratio will be kept)
d@9635: 
d@9635:             // final double heightPercent = imageHeight / 150.;
d@9635:             if (widthPercent > 1)// || heightPercent > 1) {
d@9635:                 image.setSize((int) (imageWidth / widthPercent) + "px", (int) (imageHeight / widthPercent) + "px");
d@9693:             
d@9619:             return image;
d@9619:         }
d@9619:         final String imgUrl = MapUtils.getLegendGraphicUrl(at.getAttr("url"), at.getAttr("layers"));
d@9619: 
d@9619:         final Img img = new Img(imgUrl);
ingo@4329:         img.setImageType(ImageStyle.CENTER);
ingo@4329:         img.setAutoFit(true);
ingo@4329: 
ingo@4329:         return img;
ingo@4329:     }
ingo@4329: 
ingo@4329:     private void init() {
d@9619:         this.legendContainer.setAutoHeight();
d@9619:         this.legendContainer.setLayoutAlign(VerticalAlignment.TOP);
d@9619:         this.legendContainer.setAlign(VerticalAlignment.CENTER);
ingo@4329: 
d@9619:         setTitle(this.MSG.wms_legend());
ingo@4329:         setAutoSize(true);
ingo@4329:         setCanDragResize(true);
ingo@4329:         setIsModal(false);
ingo@4329:         setShowModalMask(false);
ingo@4329:         setLayoutAlign(VerticalAlignment.TOP);
ingo@4329:         setAlign(VerticalAlignment.TOP);
ingo@4329: 
d@9619:         addItem(this.legendContainer);
ingo@4329:         addLegends();
ingo@4329: 
ingo@4329:         centerInPage();
ingo@4329:     }
ingo@4329: }