/*----------------    FILE HEADER ---------------------------------------
 This file is part of Geoide.
 Copyright (C) 2005-2006 by:
 IDgis B.V.
 http://www.idgis.nl

 This library is free software; you can redistribute it and/or
 modify it under the terms of the GNU Lesser General Public
 License as published by the Free Software Foundation; either
 version 2.1 of the License, or (at your option) any later version.

 This library is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 Lesser General Public License for more details.

 You should have received a copy of the GNU Lesser General Public
 License along with this library; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA

 Contact:

 Herman Assink
 IDgis bv
 P.O. Box 15
 7450 AA Holten
 The Netherlands
 E-Mail: herman.assink@idgis.nl

 * @version 1.4.0
 * @author IDgis team
 * 
 ------------------------------------------------------------------------*/
import nl.idgis.giclient.geoma.Point;
import nl.idgis.giclient.gis.Layer;
import nl.idgis.giclient.gui.mapviewer.MapLayer;
import nl.idgis.giclient.gui.mapviewer.MapViewer;
import nl.idgis.giclient.modes.MapViewerAction;

class nl.idgis.giclient.modes.MapViewerPan implements MapViewerAction {
	private var curx:Number = null;
	private var cury:Number = null;
	
    function enter(mapViewer:MapViewer):Void {
    }

    function exit(mapViewer:MapViewer):Void {
    }

    function performPress(mapViewer:MapViewer,pressX:Number,pressY:Number, worldPoint:Point):Void {
        mapViewer.panDragging = true;
        mapViewer["mapCustomCursor"].setDragging(true);
 		MovieClip(mapViewer["crossHair"]).startDrag();
    }

    function performRelease(mapViewer:MapViewer):Void {
    	MovieClip(mapViewer["crossHair"]).stopDrag();
    }

    function performMouseUp(mapViewer:MapViewer):Void {
        var rectX2:Number = mapViewer._xmouse;
        var rectY2:Number = mapViewer._ymouse;

        if (mapViewer.panDragging) {
            mapViewer.panDragging = false;

            var layers:Array = mapViewer.ruler.getGIS().getLayers();
            var mapLayer:MapLayer = null;
            for (var i:Number = 0; i < layers.length; i++) {
                mapLayer = mapViewer.getMapLayer(Layer(layers[i]));
                mapLayer._x = 0;
                mapLayer._y = 0;
            }
            mapViewer["stigma"]._x = 0;
            mapViewer["stigma"]._y = Stage.height - 100;
            mapViewer["landMarks"]._x = 0;
            mapViewer["landMarks"]._y = 0;
            mapViewer.getGeometryLayer()._x = 0;
            mapViewer.getGeometryLayer()._y = 0;

            var dx:Number = rectX2 - mapViewer.rectX;
            var dy:Number = rectY2 - mapViewer.rectY;
            mapViewer.ruler.getGIS().pan(mapViewer.ruler.getGIS().getCurrentCentreX()
                                            - (dx * mapViewer.ruler.getGIS().getCoordPixFactor()
                                            * mapViewer.ruler.getGIS().getCurrentScale()),
                                                mapViewer.ruler.getGIS().getCurrentCentreY()
                                                + (dy * mapViewer.ruler.getGIS().getCoordPixFactor()
                                                * mapViewer.ruler.getGIS().getCurrentScale()));
        }
    }

    function performMouseMove(mapViewer:MapViewer):Void {
    }

    function performDrag(mapViewer:MapViewer):Void {
    	
        var layers:Array = mapViewer.ruler.getGIS().getLayers();
        var mapLayer:MapLayer = null;
        for (var i:Number = 0; i < layers.length; i++) {
            mapLayer = mapViewer.getMapLayer(Layer(layers[i]));
            mapLayer._x = mapViewer._xmouse - mapViewer.rectX;
            mapLayer._y = mapViewer._ymouse - mapViewer.rectY;
        }
        mapViewer["stigma"]._x = mapViewer._xmouse - mapViewer.rectX;
        mapViewer["stigma"]._y = Stage.height - 100 + mapViewer._ymouse - mapViewer.rectY;
        mapViewer["landMarks"]._x = mapViewer._xmouse - mapViewer.rectX;
        mapViewer["landMarks"]._y = mapViewer._ymouse - mapViewer.rectY;
        mapViewer.getGeometryLayer()._x = mapViewer._xmouse - mapViewer.rectX;
        mapViewer.getGeometryLayer()._y = mapViewer._ymouse - mapViewer.rectY;
    }

    function onKeyPress(mapViewer:MapViewer):Void {
    }
}