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@9696: import com.google.gwt.event.dom.client.LoadHandler;
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: 
d@9696: 	protected FLYSConstants MSG = GWT.create(FLYSConstants.class);
ingo@4329: 
d@9696: 	private ThemeList themeList;
ingo@4329: 
d@9696: 	private final VLayout legendContainer;
d@9694: 
d@9696: 	public LegendWindow(final ThemeList themeList) {
d@9696: 		this.themeList = themeList;
d@9696: 		this.legendContainer = new VLayout();
ingo@4329: 
d@9696: 		init();
d@9696: 	}
d@9696: 
d@9696: 	public void update(final ThemeList themeList) {
d@9696: 		this.themeList = themeList;
d@9696: 
d@9696: 		final Canvas[] legends = this.legendContainer.getMembers();
d@9696: 		this.legendContainer.removeMembers(legends);
d@9696: 
d@9696: 		addLegends();
d@9696: 	}
d@9696: 
d@9696: 	private void addLegends() {
d@9696: 		final List<Theme> themes = this.themeList.getActiveThemes();
d@9696: 		com.smartgwt.client.util.SC.say("themescount " + themes.size());
d@9696: 
d@9696: 		for (int i = 0; i < themes.size(); i++) {
d@9696: 			final Theme theme = themes.get(i);
d@9696: 			if (theme.getActive() == 0) {
d@9696: 				continue;
d@9696: 			}
d@9696: 			try {
d@9696: 				if (theme instanceof AttributedTheme) {
d@9697: 					theme.setActive(0);
d@9696: 					Canvas createLegendGraphicsRow = createLegendGraphicsRow((AttributedTheme) theme);
d@9697: //					this.legendContainer.addMember(createLegendGraphicsRow);
d@9697: 					theme.setActive(1);
d@9697: 					Canvas createLegendGraphicsRow2 = createLegendGraphicsRow((AttributedTheme) theme);
d@9697: 					this.legendContainer.addMember(createLegendGraphicsRow2);
d@9696: 				}
d@9696: 			} catch (Exception e) {
d@9696: 				com.smartgwt.client.util.SC.say("exception at index " + themes.size());
d@9696: 				continue;
d@9696: 			}
d@9696: 		}
d@9696: 	}
d@9696: 
d@9696: 	private Canvas createLegendGraphicsRow(final AttributedTheme at) {
d@9696: 		com.smartgwt.client.util.SC.say("init");
d@9696: 		final Label label = new Label(at.getDescription());
d@9696: 		final Widget img = createLegendGraphics(at);
d@9696: 
d@9696: 		final HLayout row = new HLayout();
d@9696: 		row.addMember(label);
d@9696: 		row.addMember(img);
d@9696: 
d@9696: 		String url = "url";
d@9696: 
d@9696: 		if (img instanceof Image) {
d@9696: 			Image.prefetch(((Image) img).getUrl());
d@9696: 			setDimensions(row, ((Image) img).getHeight(), ((Image) img).getWidth());
d@9696: 			url = " url " + ((Image) img).getUrl();
d@9696: 		} else if (img instanceof Img) {
d@9696: 			setDimensions(row, ((Img) img).getHeight(), ((Img) img).getWidth());
d@9696: 			url = " dataPath " + ((Img) img).getDataPath();
d@9696: 		} else {
d@9696: 			setDimensions(row, 150, 400); // not sure when this is executed
d@9696: 		}
d@9696: 		String labelText = at.getDescription() + ", height: " + row.getHeight() + "width: " + row.getWidth() + " "
d@9696: 				+ url;
d@9696: 		//
d@9696: 		// final HLayout row2= new HLayout();
d@9696: 		// row.addMember(new Label(labelText));
d@9696: 
d@9696: 		com.smartgwt.client.util.SC.say(labelText);
d@9696: 		return row;
d@9696: 	}
d@9696: 
d@9696: 	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@9696: 	private Widget createLegendGraphics(final AttributedTheme at) {
d@9619: 
d@9696: 		final String legend = at.getAttr("legend");
d@9696: 		// TEST: final Image img = new Image("/images/FLYS_Donau.png"); (funktioniert!),
d@9696: 		// ebenso FLYSResources.getTest();
d@9696: 		if (legend != null && !"".equals(legend)) {
ingo@4329: 
d@9696: 			final String imgUrl = URL.encode(GWT.getHostPageBaseURL() + "images/wms_legend/" + legend);
ingo@4329: 
d@9696: 			final Image image = new Image(imgUrl);
d@9696: 			final int imageWidth = image.getWidth();
d@9696: 			final int imageHeight = image.getHeight();
d@9696: 			final double widthPercent = imageWidth / 400.;
ingo@4329: 
d@9696: 			// removing the limit of 150px height (legend can have an infinite height now,
d@9696: 			// as long as the width is less/eq 400px; if the width is >400,
d@9696: 			// the legend will be scaled to 400px width; the ratio will be kept)
d@9696: 
d@9696: 			// final double heightPercent = imageHeight / 150.;
d@9696: 			if (widthPercent > 1)// || heightPercent > 1) {
d@9696: 				image.setSize((int) (imageWidth / widthPercent) + "px", (int) (imageHeight / widthPercent) + "px");
d@9696: 
d@9696: 			return image;
d@9696: 		}
d@9696: 		final String imgUrl = MapUtils.getLegendGraphicUrl(at.getAttr("url"), at.getAttr("layers"));
d@9696: 
d@9696: 		final Img img = new Img(imgUrl);
d@9696: 		img.setImageType(ImageStyle.CENTER);
d@9696: 		img.setAutoFit(true);
d@9696: 
d@9696: 		return img;
d@9696: 	}
d@9696: 
d@9696: 	private void init() {
d@9696: 		this.legendContainer.setAutoHeight();
d@9696: 		this.legendContainer.setLayoutAlign(VerticalAlignment.TOP);
d@9696: 		this.legendContainer.setAlign(VerticalAlignment.CENTER);
d@9696: 
d@9696: 		setTitle(this.MSG.wms_legend());
d@9696: 		setAutoSize(true);
d@9696: 		setCanDragResize(true);
d@9696: 		setIsModal(false);
d@9696: 		setShowModalMask(false);
d@9696: 		setLayoutAlign(VerticalAlignment.TOP);
d@9696: 		setAlign(VerticalAlignment.TOP);
d@9696: 
d@9696: 		addItem(this.legendContainer);
d@9696: 		addLegends();
d@9696: 
d@9696: 		centerInPage();
d@9696: 	}
ingo@4329: }