/*
* This is part of Geomajas, a GIS framework, http://www.geomajas.org/.
*
* Copyright 2008-2015 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.controller.GraphicsController;
import org.geomajas.gwt.client.controller.ZoomToRectangleController;
import org.geomajas.gwt.client.gfx.PainterVisitor;
import org.geomajas.gwt.client.gfx.style.PictureStyle;
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 to a rectangle on the map.
*
* @author Pieter De Graef
*/
public class ZoomToRectangleAddon extends MapAddon {
private MapWidget map;
private boolean firstTime = true;
public ZoomToRectangleAddon(String id, MapWidget map) {
super(id, 20, 20);
this.map = map;
}
// -------------------------------------------------------------------------
// MapAddon implementation:
// -------------------------------------------------------------------------
/**
* Paint this zoom to rectangle button!
*/
public void accept(PainterVisitor visitor, Object group, Bbox bounds, boolean recursive) {
map.getVectorContext().drawGroup(group, this);
Coordinate c = getUpperLeftCorner();
PictureStyle pictureStyle = new PictureStyle(1);
pictureStyle.setClassName("gm-ZoomToRectangleControl");
map.getVectorContext().drawImage(this, "zoom-rect-img",
Geomajas.getIsomorphicDir() + "geomajas/mapaddon/zoom_rectangle.png",
new Bbox(c.getX(), c.getY(), 20, 20), pictureStyle);
if (firstTime) {
map.getVectorContext().setController(this, "zoom-rect-img", new ActivateRectangleController(map),
Event.MOUSEEVENTS);
map.getVectorContext().setCursor(this, "zoom-rect-img", Cursor.POINTER.getValue());
}
firstTime = false;
}
public void onDraw() {
}
public void onRemove() {
}
/**
* Controller that activates the ZoomToRectangleController to be used once.
*
* @author Pieter De Graef
*/
private class ActivateRectangleController extends AbstractGraphicsController {
protected ActivateRectangleController(MapWidget mapWidget) {
super(mapWidget);
}
public void onMouseUp(MouseUpEvent event) {
mapWidget.setController(new ZoomToRectangleOnceController(map));
event.stopPropagation();
}
public void onMouseDown(MouseDownEvent event) {
// Don't propagate to the active controller on the map:
event.stopPropagation();
}
}
/**
* Controller the zooms to a rectangle drawn by the user, and then deactivates itself again.
*
* @author Pieter De Graef
*/
private class ZoomToRectangleOnceController extends ZoomToRectangleController {
private GraphicsController keepController;
public ZoomToRectangleOnceController(MapWidget mapWidget) {
super(mapWidget);
keepController = mapWidget.getController();
}
protected void selectRectangle(Bbox worldBounds) {
super.selectRectangle(worldBounds);
map.setController(keepController);
}
}
}