/*
* This is part of Geomajas, a GIS framework, http://www.geomajas.org/.
*
* Copyright 2008-2011 Geosparc nv, http://www.geosparc.com/, Belgium.
*
* The program is available in open source according to the GNU Affero
* General Public License. All contributions in this program are covered
* by the Geomajas Contributors License Agreement. For full licensing
* details, see LICENSE.txt in the project root.
*/
package org.geomajas.gwt.client.gfx.paintable.mapaddon;
import org.geomajas.geometry.Coordinate;
import org.geomajas.gwt.client.Geomajas;
import org.geomajas.gwt.client.controller.AbstractGraphicsController;
import org.geomajas.gwt.client.gfx.PainterVisitor;
import org.geomajas.gwt.client.gfx.style.PictureStyle;
import org.geomajas.gwt.client.map.MapView.ZoomOption;
import org.geomajas.gwt.client.spatial.Bbox;
import org.geomajas.gwt.client.widget.MapWidget;
import com.google.gwt.event.dom.client.MouseDownEvent;
import com.google.gwt.event.dom.client.MouseUpEvent;
import com.google.gwt.user.client.Event;
import com.smartgwt.client.types.Cursor;
/**
* Map addon for zooming buttons in the upper left corner.
*
* @author Pieter De Graef
*/
public class ZoomAddon extends MapAddon {
private MapWidget map;
private boolean firstTime = true;
public ZoomAddon(String id, MapWidget map) {
super(id, 20, 60);
this.map = map;
}
// -------------------------------------------------------------------------
// MapAddon implementation:
// -------------------------------------------------------------------------
/**
* Paint this pan button!
*/
public void accept(PainterVisitor visitor, Object group, Bbox bounds, boolean recursive) {
map.getVectorContext().drawGroup(group, this);
Coordinate c = getUpperLeftCorner();
map.getVectorContext().drawImage(this, "bg", Geomajas.getIsomorphicDir() + "geomajas/mapaddon/zoombg.png",
new Bbox(c.getX(), c.getY(), 20, 60), new PictureStyle(1));
map.getVectorContext().drawImage(this, "plus", Geomajas.getIsomorphicDir() + "geomajas/mapaddon/zoomPlus.png",
new Bbox(c.getX(), c.getY(), 20, 20), new PictureStyle(1));
map.getVectorContext().drawImage(this, "minus",
Geomajas.getIsomorphicDir() + "geomajas/mapaddon/zoomMinus.png",
new Bbox(c.getX(), c.getY() + 40, 20, 20), new PictureStyle(1));
map.getVectorContext().drawImage(this, "max", Geomajas.getIsomorphicDir() + "geomajas/mapaddon/maxextent.png",
new Bbox(c.getX(), c.getY() + 20, 20, 20), new PictureStyle(1));
if (firstTime) {
map.getVectorContext().setController(this, "plus", new ZoomController(map, 2), Event.MOUSEEVENTS);
map.getVectorContext().setCursor(this, "plus", Cursor.POINTER.getValue());
map.getVectorContext().setController(this, "minus", new ZoomController(map, 0.5), Event.MOUSEEVENTS);
map.getVectorContext().setCursor(this, "minus", Cursor.POINTER.getValue());
map.getVectorContext().setController(this, "max", new MaxExtentController(map), Event.MOUSEEVENTS);
map.getVectorContext().setCursor(this, "max", Cursor.POINTER.getValue());
}
firstTime = false;
}
public void onDraw() {
}
public void onRemove() {
}
/**
* Controller that zooms in or out on mouse up.
*
* @author Pieter De Graef
*/
private class ZoomController extends AbstractGraphicsController {
private double delta;
protected ZoomController(MapWidget mapWidget, double delta) {
super(mapWidget);
this.delta = delta;
}
public void onMouseUp(MouseUpEvent event) {
mapWidget.getMapModel().getMapView().scale(delta, ZoomOption.LEVEL_CHANGE);
event.stopPropagation();
}
public void onMouseDown(MouseDownEvent event) {
// Don't propagate to the active controller on the map:
event.stopPropagation();
}
}
/**
* Controller that zooms to the maximum extent on mouse up.
*
* @author Pieter De Graef
*/
private class MaxExtentController extends AbstractGraphicsController {
protected MaxExtentController(MapWidget mapWidget) {
super(mapWidget);
}
public void onMouseUp(MouseUpEvent event) {
Bbox max = mapWidget.getMapModel().getMapView().getMaxBounds();
mapWidget.getMapModel().getMapView().applyBounds(max, ZoomOption.LEVEL_FIT);
event.stopPropagation();
}
public void onMouseDown(MouseDownEvent event) {
// Don't propagate to the active controller on the map:
event.stopPropagation();
}
}
}