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//>>built
define("dojox/geo/openlayers/GfxLayer", ["dojo/_base/kernel",
"dojo/_base/declare",
"dojo/_base/connect",
"dojo/_base/html",
"dojox/gfx",
"dojox/gfx/_base",
"dojox/gfx/shape",
"dojox/gfx/path",
"dojox/gfx/matrix",
"dojox/geo/openlayers/Feature",
"dojox/geo/openlayers/Layer"], function(dojo, declare, connect, html, gfx, gbase, shape,
path, matrix, Feature, Layer){
/*=====
var Layer = dojox.geo.openlayers.Layer;
=====*/
return declare("dojox.geo.openlayers.GfxLayer", Layer, {
// summary:
// A layer dedicated to render dojox.geo.openlayers.GeometryFeature
// description:
// A layer class for rendering geometries as dojox.gfx.Shape objects.
// This layer class accepts Features which encapsulates graphic objects to be added to the map.
// All objects should be added to this group.
// tags:
// private
_viewport : null,
constructor : function(name, options){
// summary:
// Constructs a new GFX layer.
var s = dojox.gfx.createSurface(this.olLayer.div, 100, 100);
this._surface = s;
var vp;
if (options && options.viewport)
vp = options.viewport;
else
vp = s.createGroup();
this.setViewport(vp);
dojo.connect(this.olLayer, "onMapResize", this, "onMapResize");
this.olLayer.getDataExtent = this.getDataExtent;
},
getViewport : function(){
// summary:
// Gets the viewport
// tags:
// internal
return this._viewport;
},
setViewport : function(g){
// summary:
// Sets the viewport
// g: dojox.gfx.Group
// tags:
// internal
if (this._viewport)
this._viewport.removeShape();
this._viewport = g;
this._surface.add(g);
},
onMapResize : function(){
// summary:
// Called when map is resized.
// tag:
// protected
this._surfaceSize();
},
setMap : function(map){
// summary:
// Sets the map for this layer.
// tag:
// protected
this.inherited(arguments);
this._surfaceSize();
},
getDataExtent : function(){
// summary:
// Get data extent
// tags:
// private
var ret = this._surface.getDimensions();
return ret;
},
getSurface : function(){
// summary:
// Get the underlying dojox.gfx.Surface
// returns: dojox.gfx.Surface
// The dojox.gfx.Surface this layer uses to draw its GFX rendering.
return this._surface;
},
_surfaceSize : function(){
// summary:
// Recomputes the surface size when being resized.
// tags:
// private
var s = this.olLayer.map.getSize();
this._surface.setDimensions(s.w, s.h);
},
moveTo : function(event){
// summary:
// Called when this layer is moved or zoommed.
// event:
// The event
var s = dojo.style(this.olLayer.map.layerContainerDiv);
var left = parseInt(s.left);
var top = parseInt(s.top);
if (event.zoomChanged || left || top) {
var d = this.olLayer.div;
dojo.style(d, {
left : -left + "px",
top : -top + "px"
});
if (this._features == null)
return;
var vp = this.getViewport();
vp.setTransform(matrix.translate(left, top));
this.inherited(arguments);
}
},
added : function(){
// summary:
// Called when added to a map.
this.inherited(arguments);
this._surfaceSize();
}
});
});
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