teichmann@5861: /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
teichmann@5861:  * Software engineering by Intevation GmbH
teichmann@5861:  *
teichmann@5861:  * This file is Free Software under the GNU AGPL (>=v3) 
teichmann@5861:  * and comes with ABSOLUTELY NO WARRANTY! Check out the
teichmann@5861:  * documentation coming with Dive4Elements River for details. 
teichmann@5861:  */
teichmann@5861: 
teichmann@5835: package org.dive4elements.river.client.client.ui.map;
ingo@802: 
ingo@802: import com.google.gwt.core.client.GWT;
ingo@1297: import com.google.gwt.i18n.client.NumberFormat;
ingo@802: 
ingo@802: import com.smartgwt.client.types.SelectionType;
ingo@802: import com.smartgwt.client.widgets.ImgButton;
ingo@802: import com.smartgwt.client.widgets.Label;
ingo@802: import com.smartgwt.client.widgets.events.ClickEvent;
ingo@802: import com.smartgwt.client.widgets.events.ClickHandler;
ingo@802: import com.smartgwt.client.widgets.layout.HLayout;
ingo@802: 
ingo@802: import org.gwtopenmaps.openlayers.client.control.Measure;
ingo@802: import org.gwtopenmaps.openlayers.client.event.MeasureEvent;
ingo@802: import org.gwtopenmaps.openlayers.client.event.MeasureListener;
ingo@802: import org.gwtopenmaps.openlayers.client.event.MeasurePartialListener;
ingo@802: import org.gwtopenmaps.openlayers.client.handler.PathHandler;
ingo@802: import org.gwtopenmaps.openlayers.client.handler.PolygonHandler;
ingo@802: 
teichmann@5835: import org.dive4elements.river.client.client.FLYSConstants;
teichmann@5835: import org.dive4elements.river.client.client.utils.EnableDisableCmd;
ingo@802: 
ingo@802: 
ingo@802: public class MeasureControl extends HLayout {
ingo@802: 
ingo@1297:     public static final String NUMBER_FORMAT_PATTERN = "#.##";
ingo@1297: 
ingo@1300:     public static final String AREA_UNIT      = "ha";
ingo@1300:     public static final int    AREA_FACTOR_M  = 10000;
ingo@1300:     public static final int    AREA_FACTOR_KM = 100;
ingo@1300: 
ingo@802:     protected FLYSConstants MSG = GWT.create(FLYSConstants.class);
ingo@802: 
ingo@802:     protected FloodMap floodMap;
ingo@802: 
ingo@802:     protected Measure measureLine;
ingo@802:     protected Measure measurePolygon;
ingo@802: 
ingo@802:     protected ImgButton measureLineButton;
ingo@802:     protected ImgButton measurePolyButton;
ingo@802:     protected Label     label;
ingo@802: 
ingo@1297:     protected NumberFormat formatter;
ingo@1297: 
ingo@802: 
ingo@802:     public MeasureControl(FloodMap floodMap, EnableDisableCmd cmd) {
ingo@802:         this.floodMap = floodMap;
ingo@802: 
ingo@802:         measureLineButton = createMeasureLineControl(cmd);
ingo@802:         measurePolyButton = createMeasurePolyControl(cmd);
ingo@802: 
ingo@1297:         formatter = NumberFormat.getFormat(NUMBER_FORMAT_PATTERN);
ingo@1297: 
ingo@802:         label = new Label();
ingo@802: 
ingo@802:         initLayout();
ingo@802:     }
ingo@802: 
ingo@802: 
ingo@802:     protected void initLayout() {
ingo@1433:         setWidth(100);
ingo@802:         setMembersMargin(2);
ingo@1433: 
ingo@1433:         label.setWidth(75);
ingo@1433: 
ingo@802:         addMember(measureLineButton);
ingo@802:         addMember(measurePolyButton);
ingo@802:         addMember(label);
ingo@802:     }
ingo@802: 
ingo@802: 
ingo@802:     protected ImgButton createMeasureLineControl(final EnableDisableCmd cmd) {
ingo@802:         measureLine = new Measure(new PathHandler());
ingo@802:         measureLine.setPersist(true);
ingo@802:         measureLine.addMeasureListener(new MeasureListener() {
ingo@802:             public void onMeasure(MeasureEvent e) {
ingo@802:                 updateMeasure(e.getMeasure(), e.getUnits());
ingo@802:             }
ingo@802:         });
ingo@802:         measureLine.addMeasurePartialListener(new MeasurePartialListener() {
ingo@802:             public void onMeasurePartial(MeasureEvent e) {
ingo@802:                 updateMeasure(e.getMeasure(), e.getUnits());
ingo@802:             }
ingo@802:         });
ingo@802: 
ingo@802:         floodMap.getMap().addControl(measureLine);
ingo@802: 
ingo@802:         final ImgButton btn = new ImgButton();
ingo@802:         String baseUrl = GWT.getHostPageBaseURL();
ingo@802:         btn.setSrc(baseUrl + MSG.measureLine());
ingo@802:         btn.setActionType(SelectionType.CHECKBOX);
ingo@802:         btn.setSize(20);
ingo@802:         btn.setShowRollOver(false);
ingo@2471:         btn.setShowRollOverIcon(false);
ingo@802:         btn.setSelected(false);
ingo@880:         btn.setTooltip(MSG.measureDistance());
ingo@802:         btn.addClickHandler(new ClickHandler() {
ingo@802:             public void onClick(ClickEvent e) {
ingo@802:                 if (btn.isSelected()) {
ingo@802:                     cmd.enable();
ingo@802:                     activateMeasurePolygon(false);
ingo@802:                     activateMeasureLine(true);
ingo@802:                 }
ingo@802:                 else {
ingo@802:                     cmd.disable();
ingo@802:                     activateMeasureLine(false);
ingo@802:                 }
ingo@802:             }
ingo@802:         });
ingo@802: 
ingo@802:         return btn;
ingo@802:     }
ingo@802: 
ingo@802: 
ingo@802:     protected ImgButton createMeasurePolyControl(final EnableDisableCmd cmd) {
ingo@802:         measurePolygon = new Measure(new PolygonHandler());
ingo@802:         measurePolygon.setPersist(true);
ingo@802:         measurePolygon.addMeasureListener(new MeasureListener() {
ingo@802:             public void onMeasure(MeasureEvent e) {
ingo@1300:                 updateMeasureArea(e.getMeasure(), e.getUnits());
ingo@802:             }
ingo@802:         });
ingo@802:         measurePolygon.addMeasurePartialListener(new MeasurePartialListener() {
ingo@802:             public void onMeasurePartial(MeasureEvent e) {
ingo@1300:                 updateMeasureArea(e.getMeasure(), e.getUnits());
ingo@802:             }
ingo@802:         });
ingo@802: 
ingo@802:         floodMap.getMap().addControl(measurePolygon);
ingo@802: 
ingo@802:         final ImgButton btn = new ImgButton();
ingo@802:         String baseUrl = GWT.getHostPageBaseURL();
ingo@802:         btn.setSrc(baseUrl + MSG.measurePolygon());
ingo@802:         btn.setActionType(SelectionType.CHECKBOX);
ingo@802:         btn.setSize(20);
ingo@802:         btn.setShowRollOver(false);
ingo@2471:         btn.setShowRollOverIcon(false);
ingo@802:         btn.setSelected(false);
ingo@880:         btn.setTooltip(MSG.measureArea());
ingo@802:         btn.addClickHandler(new ClickHandler() {
ingo@802:             public void onClick(ClickEvent e) {
ingo@802:                 if (btn.isSelected()) {
ingo@802:                     cmd.enable();
ingo@802:                     activateMeasureLine(false);
ingo@802:                     activateMeasurePolygon(true);
ingo@802:                 }
ingo@802:                 else {
ingo@802:                     cmd.disable();
ingo@802:                     activateMeasurePolygon(false);
ingo@802:                 }
ingo@802:             }
ingo@802:         });
ingo@802: 
ingo@802:         return btn;
ingo@802:     }
ingo@802: 
ingo@802: 
ingo@802:     protected void clearMeasure() {
ingo@802:         label.setContents("");
ingo@802:     }
ingo@802: 
ingo@802: 
ingo@802:     protected void updateMeasure(float value, String unit) {
ingo@1297:         label.setContents(formatter.format(value) + " " + unit);
ingo@802:     }
ingo@802: 
ingo@802: 
ingo@1300:     protected void updateMeasureArea(float value, String unit) {
ingo@1300:         float  ha      = value;
ingo@1300:         String ha_unit = unit;
ingo@1300: 
ingo@1300:         if (unit.equals("m")) {
ingo@1300:             ha      = (float) value / AREA_FACTOR_M;
ingo@1300:             ha_unit = AREA_UNIT;
ingo@1300:         }
ingo@1300:         else if (unit.equals("km")) {
ingo@1300:             ha      = (float) value * AREA_FACTOR_KM;
ingo@1300:             ha_unit = AREA_UNIT;
ingo@1300:         }
ingo@1300: 
ingo@1300:         label.setContents(formatter.format(ha) + " " + ha_unit);
ingo@1300:     }
ingo@1300: 
ingo@1300: 
ingo@802:     public void activate(boolean activate) {
ingo@802:         if (!activate) {
ingo@802:             clearMeasure();
ingo@802:             activateMeasureLine(activate);
ingo@802:             activateMeasurePolygon(activate);
ingo@802:         }
ingo@802:     }
ingo@802: 
ingo@802: 
ingo@802:     protected void activateMeasureLine(boolean activate) {
ingo@802:         if (activate) {
ingo@802:             clearMeasure();
ingo@802:             measureLineButton.select();
ingo@802:             measureLine.activate();
ingo@802:         }
ingo@802:         else {
ingo@802:             measureLineButton.deselect();
ingo@802:             measureLine.deactivate();
ingo@802:         }
ingo@802:     }
ingo@802: 
ingo@802: 
ingo@802:     protected void activateMeasurePolygon(boolean activate) {
ingo@802:         if (activate) {
ingo@802:             clearMeasure();
ingo@802:             measurePolyButton.select();
ingo@802:             measurePolygon.activate();
ingo@802:         }
ingo@802:         else {
ingo@802:             measurePolyButton.deselect();
ingo@802:             measurePolygon.deactivate();
ingo@802:         }
ingo@802:     }
ingo@802: }
ingo@802: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :