816 lines
19 KiB
JavaScript
816 lines
19 KiB
JavaScript
// FIXME recheck layer/map projection compatability when projection changes
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goog.provide('ol.Map');
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goog.provide('ol.MapProperty');
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goog.require('goog.array');
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goog.require('goog.color');
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goog.require('goog.dom.ViewportSizeMonitor');
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goog.require('goog.events');
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goog.require('goog.events.BrowserEvent');
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goog.require('goog.events.Event');
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goog.require('goog.events.EventType');
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goog.require('goog.events.MouseWheelEvent');
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goog.require('goog.events.MouseWheelHandler');
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goog.require('goog.events.MouseWheelHandler.EventType');
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goog.require('goog.fx.anim');
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goog.require('goog.fx.anim.Animated');
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goog.require('goog.math.Size');
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goog.require('goog.object');
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goog.require('ol.Array');
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goog.require('ol.Control');
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goog.require('ol.Coordinate');
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goog.require('ol.Extent');
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goog.require('ol.LayerRenderer');
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goog.require('ol.Object');
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goog.require('ol.Projection');
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goog.require('ol.TransformFunction');
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/**
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* @enum {string}
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*/
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ol.MapProperty = {
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BACKGROUND_COLOR: 'backgroundColor',
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CENTER: 'center',
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CONTROLS: 'controls',
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EXTENT: 'extent',
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LAYERS: 'layers',
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PROJECTION: 'projection',
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RESOLUTION: 'resolution',
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SIZE: 'size',
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USER_PROJECTION: 'userProjection'
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};
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/**
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* @enum {number}
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*/
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ol.MapPaneZIndex = {
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EVENTS: 1000
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};
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/**
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* @constructor
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* @extends {ol.Object}
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* @param {HTMLDivElement} target Target.
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* @param {Object=} opt_values Values.
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* @param {goog.dom.ViewportSizeMonitor=} opt_viewportSizeMonitor
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* Viewport size monitor.
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*/
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ol.Map = function(target, opt_values, opt_viewportSizeMonitor) {
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goog.base(this);
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/**
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* @type {ol.TransformFunction}
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* @private
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*/
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this.userToMapTransform_ = ol.Projection.identityTransform;
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/**
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* @type {ol.TransformFunction}
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* @private
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*/
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this.mapToUserTransform_ = ol.Projection.cloneTransform;
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/**
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* @private
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* @type {HTMLDivElement}
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*/
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this.eventsPane_ = /** @type {HTMLDivElement} */ (
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goog.dom.createElement(goog.dom.TagName.DIV));
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this.eventsPane_.className = 'ol-pane-events';
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this.eventsPane_.style.position = 'absolute';
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this.eventsPane_.style.width = '100%';
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this.eventsPane_.style.height = '100%';
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this.eventsPane_.style.zIndex = ol.MapPaneZIndex.EVENTS;
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target.appendChild(this.eventsPane_);
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goog.events.listen(this.eventsPane_, [
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goog.events.EventType.DBLCLICK,
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goog.events.EventType.MOUSEDOWN,
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goog.events.EventType.MOUSEMOVE,
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goog.events.EventType.MOUSEOUT,
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goog.events.EventType.MOUSEUP
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], this.handleBrowserEvent, false, this);
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var mouseWheelHandler = new goog.events.MouseWheelHandler(this.eventsPane_);
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goog.events.listen(mouseWheelHandler,
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goog.events.MouseWheelHandler.EventType.MOUSEWHEEL,
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this.handleBrowserEvent, false, this);
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this.registerDisposable(mouseWheelHandler);
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/**
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* @private
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* @type {goog.fx.anim.Animated}
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*/
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this.animation_ = new ol.MapAnimation(this);
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/**
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* @private
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* @type {boolean}
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*/
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this.animating_ = false;
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/**
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* @private
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* @type {number}
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*/
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this.freezeCount_ = 0;
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/**
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* @private
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* @type {HTMLDivElement}
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*/
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this.target_ = target;
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/**
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* @private
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* @type {Array.<number>}
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*/
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this.layersListenerKeys_ = null;
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/**
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* @protected
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* @type {Object.<number, ol.LayerRenderer>}
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*/
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this.layerRenderers = {};
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/**
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* @private
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* @type {goog.dom.ViewportSizeMonitor}
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*/
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this.viewportSizeMonitor_ = goog.isDef(opt_viewportSizeMonitor) ?
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opt_viewportSizeMonitor : new goog.dom.ViewportSizeMonitor();
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goog.events.listen(this.viewportSizeMonitor_, goog.events.EventType.RESIZE,
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this.handleViewportResize, false, this);
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goog.events.listen(this,
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ol.Object.getChangedEventType(ol.MapProperty.BACKGROUND_COLOR),
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this.handleBackgroundColorChanged, false, this);
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goog.events.listen(
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this, ol.Object.getChangedEventType(ol.MapProperty.CENTER),
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this.handleCenterChanged, false, this);
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goog.events.listen(
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this, ol.Object.getChangedEventType(ol.MapProperty.LAYERS),
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this.handleLayersChanged, false, this);
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goog.events.listen(
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this, ol.Object.getChangedEventType(ol.MapProperty.PROJECTION),
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this.handleProjectionChanged, false, this);
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goog.events.listen(
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this, ol.Object.getChangedEventType(ol.MapProperty.RESOLUTION),
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this.handleResolutionChanged, false, this);
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goog.events.listen(
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this, ol.Object.getChangedEventType(ol.MapProperty.SIZE),
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this.handleSizeChanged, false, this);
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goog.events.listen(
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this, ol.Object.getChangedEventType(ol.MapProperty.USER_PROJECTION),
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this.handleUserProjectionChanged, false, this);
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if (goog.isDef(opt_values)) {
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this.setValues(opt_values);
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}
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};
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goog.inherits(ol.Map, ol.Object);
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/**
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* @private
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*/
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ol.Map.prototype.animate_ = function() {
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goog.asserts.assert(!this.animating_);
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goog.fx.anim.registerAnimation(this.animation_);
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this.animating_ = true;
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};
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/**
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* @param {ol.Layer} layer Layer.
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* @protected
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* @return {ol.LayerRenderer} layerRenderer Layer renderer.
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*/
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ol.Map.prototype.createLayerRenderer = goog.abstractMethod;
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/**
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*/
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ol.Map.prototype.freeze = function() {
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++this.freezeCount_;
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};
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/**
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* @inheritDoc
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*/
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ol.Map.prototype.disposeInternal = function() {
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goog.object.forEach(this.layerRenderers, function(layerRenderer) {
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goog.dispose(layerRenderer);
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});
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goog.base(this, 'disposeInternal');
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};
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/**
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* @param {ol.Extent} extent Extent.
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*/
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ol.Map.prototype.fitExtent = function(extent) {
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this.whileFrozen(function() {
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this.setCenter(extent.getCenter());
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this.setResolution(this.getResolutionForExtent(extent));
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}, this);
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};
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/**
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* @param {ol.Extent} userExtent Extent in user projection.
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*/
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ol.Map.prototype.fitUserExtent = function(userExtent) {
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this.fitExtent(userExtent.transform(this.userToMapTransform_));
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};
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/**
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* @param {function(this: T, ol.Layer, ol.LayerRenderer, number)} f Function.
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* @param {T=} opt_obj Object.
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* @template T
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*/
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ol.Map.prototype.forEachVisibleLayer = function(f, opt_obj) {
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var layers = this.getLayers();
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layers.forEach(function(layer, index) {
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var layerRenderer = this.getLayerRenderer(layer);
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f.call(opt_obj, layer, layerRenderer, index);
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}, this);
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};
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/**
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* @return {string|undefined} Background color.
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*/
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ol.Map.prototype.getBackgroundColor = function() {
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return /** @type {string|undefined} */ (
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this.get(ol.MapProperty.BACKGROUND_COLOR));
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};
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/**
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* @return {ol.Coordinate|undefined} Center.
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*/
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ol.Map.prototype.getCenter = function() {
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return /** @type {ol.Coordinate} */ (this.get(ol.MapProperty.CENTER));
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};
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/**
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* @return {ol.Array} Controls.
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*/
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ol.Map.prototype.getControls = function() {
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return /** @type {ol.Array} */ this.get(ol.MapProperty.CONTROLS);
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};
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/**
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* @param {ol.Coordinate} pixel Pixel.
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* @return {ol.Coordinate} Coordinate.
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*/
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ol.Map.prototype.getCoordinateFromPixel = function(pixel) {
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var center = this.getCenter();
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goog.asserts.assert(goog.isDef(center));
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var resolution = this.getResolution();
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goog.asserts.assert(goog.isDef(resolution));
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var size = this.getSize();
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goog.asserts.assert(goog.isDef(size));
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var x = center.x + resolution * (pixel.x - size.width / 2);
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var y = center.y - resolution * (pixel.y - size.height / 2);
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return new ol.Coordinate(x, y);
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};
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/**
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* @return {ol.Extent|undefined} Extent.
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*/
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ol.Map.prototype.getExtent = function() {
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return /** @type {ol.Extent} */ (this.get(ol.MapProperty.EXTENT));
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};
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/**
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* @param {ol.Layer} layer Layer.
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* @protected
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* @return {ol.LayerRenderer} Layer renderer.
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*/
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ol.Map.prototype.getLayerRenderer = function(layer) {
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var key = goog.getUid(layer);
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var layerRenderer = this.layerRenderers[key];
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goog.asserts.assert(goog.isDef(layerRenderer));
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return layerRenderer;
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};
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/**
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* @return {ol.Array} Layers.
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*/
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ol.Map.prototype.getLayers = function() {
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return /** @type {ol.Array} */ (this.get(ol.MapProperty.LAYERS));
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};
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/**
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* @param {ol.Coordinate} coordinate Coordinate.
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* @return {ol.Coordinate} Pixel.
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*/
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ol.Map.prototype.getPixelFromCoordinate = function(coordinate) {
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var center = this.getCenter();
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goog.asserts.assert(goog.isDef(center));
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var resolution = this.getResolution();
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goog.asserts.assert(goog.isDef(resolution));
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var size = this.getSize();
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goog.asserts.assert(goog.isDef(size));
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var x = (coordinate.x - center.x) / resolution + size.width / 2;
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var y = (center.y - coordinate.y) / resolution + size.height / 2;
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return new ol.Coordinate(x, y);
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};
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/**
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* @return {ol.Projection|undefined} Projection.
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*/
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ol.Map.prototype.getProjection = function() {
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return /** @type {ol.Projection} */ (this.get(ol.MapProperty.PROJECTION));
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};
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/**
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* @return {number|undefined} Resolution.
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*/
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ol.Map.prototype.getResolution = function() {
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return /** @type {number} */ (this.get(ol.MapProperty.RESOLUTION));
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};
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/**
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* @param {ol.Extent} extent Extent.
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* @return {number} Resolution.
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*/
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ol.Map.prototype.getResolutionForExtent = function(extent) {
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var size = this.getSize();
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goog.asserts.assert(goog.isDef(size));
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var xResolution = (extent.maxX - extent.minX) / size.width;
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var yResolution = (extent.maxY - extent.minY) / size.height;
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return Math.max(xResolution, yResolution);
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};
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/**
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* @return {goog.math.Size|undefined} Size.
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*/
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ol.Map.prototype.getSize = function() {
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return /** @type {goog.math.Size|undefined} */ (
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this.get(ol.MapProperty.SIZE));
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};
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/**
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* @return {HTMLDivElement} Target.
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*/
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ol.Map.prototype.getTarget = function() {
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return this.target_;
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};
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/**
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* @return {ol.Coordinate|undefined} Center in user projection.
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*/
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ol.Map.prototype.getUserCenter = function() {
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var center = this.getCenter();
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if (goog.isDef(center)) {
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return this.mapToUserTransform_(center);
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} else {
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return undefined;
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}
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};
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/**
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* @return {ol.Extent|undefined} Extent in user projection.
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*/
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ol.Map.prototype.getUserExtent = function() {
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var extent = this.getExtent();
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if (goog.isDef(extent)) {
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return extent.transform(this.mapToUserTransform_);
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} else {
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return undefined;
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}
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};
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/**
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* @return {ol.Projection|undefined} Projection.
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*/
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ol.Map.prototype.getUserProjection = function() {
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return /** @type {ol.Projection} */ this.get(ol.MapProperty.USER_PROJECTION);
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};
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/**
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*/
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ol.Map.prototype.handleBackgroundColorChanged = goog.nullFunction;
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/**
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* @param {goog.events.BrowserEvent} event Event.
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*/
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ol.Map.prototype.handleBrowserEvent = function(event) {
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var mapBrowserEvent = new ol.MapBrowserEvent(event.type, this, event);
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var controls = this.getControls();
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var controlsArray = /** @type {Array.<ol.Control>} */ controls.getArray();
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goog.array.every(controlsArray, function(control) {
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control.handleMapBrowserEvent(mapBrowserEvent);
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return !mapBrowserEvent.defaultPrevented;
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});
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};
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/**
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* @protected
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*/
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ol.Map.prototype.handleCenterChanged = function() {
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this.recalculateExtent_();
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};
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/**
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* @param {ol.Layer} layer Layer.
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* @protected
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*/
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ol.Map.prototype.handleLayerAdd = function(layer) {
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var projection = this.getProjection();
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var storeProjection = layer.getStore().getProjection();
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if (goog.isDef(projection)) {
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goog.asserts.assert(ol.Projection.equivalent(projection, storeProjection));
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}
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var layerRenderer = this.createLayerRenderer(layer);
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this.setLayerRenderer(layer, layerRenderer);
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};
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/**
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* @param {ol.Layer} layer Layer.
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* @protected
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*/
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ol.Map.prototype.handleLayerRemove = function(layer) {
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this.removeLayerRenderer(layer);
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};
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/**
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* @param {ol.ArrayEvent} event Event.
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* @protected
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*/
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ol.Map.prototype.handleLayersInsertAt = function(event) {
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var layers = /** @type {ol.Array} */ (event.target);
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var layer = /** @type {ol.Layer} */ layers.getAt(event.index);
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this.handleLayerAdd(layer);
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};
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/**
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* @param {ol.ArrayEvent} event Event.
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* @protected
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*/
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ol.Map.prototype.handleLayersRemoveAt = function(event) {
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var layer = /** @type {ol.Layer} */ (event.prev);
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this.handleLayerRemove(layer);
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};
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/**
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* @param {ol.ArrayEvent} event Event.
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* @protected
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*/
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ol.Map.prototype.handleLayersSetAt = function(event) {
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var prevLayer = /** @type {ol.Layer} */ (event.prev);
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this.handleLayerRemove(prevLayer);
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var layers = /** @type {ol.Array} */ (event.target);
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var layer = /** @type {ol.Layer} */ layers.getAt(event.index);
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this.handleLayerAdd(layer);
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};
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/**
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*/
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ol.Map.prototype.handleLayersChanged = function() {
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var layerRenderers = goog.object.getValues(this.layerRenderers);
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goog.array.forEach(layerRenderers, function(layerRenderer) {
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this.removeLayerRenderer(layerRenderer);
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}, this);
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this.layerRenderers = {};
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if (!goog.isNull(this.layersListenerKeys_)) {
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goog.array.forEach(this.layersListenerKeys_, goog.events.unlistenByKey);
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this.layersListenerKeys_ = null;
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}
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var layers = this.getLayers();
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if (goog.isDefAndNotNull(layers)) {
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goog.array.forEach(layers.getArray(), function(layer) {
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var layerRenderer = this.createLayerRenderer(layer);
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this.setLayerRenderer(layer, layerRenderer);
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}, this);
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this.layersListenerKeys_ = [
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goog.events.listen(layers, ol.ArrayEventType.INSERT_AT,
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this.handleLayersInsertAt, false, this),
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goog.events.listen(layers, ol.ArrayEventType.REMOVE_AT,
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this.handleLayersRemoveAt, false, this),
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goog.events.listen(layers, ol.ArrayEventType.SET_AT,
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this.handleLayersSetAt, false, this)
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];
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}
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};
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/**
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* @protected
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*/
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ol.Map.prototype.handleProjectionChanged = function() {
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this.recalculateTransforms_();
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};
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/**
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* @protected
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*/
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ol.Map.prototype.handleResolutionChanged = function() {
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this.recalculateExtent_();
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};
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/**
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* @protected
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*/
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ol.Map.prototype.handleSizeChanged = function() {
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this.recalculateExtent_();
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};
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/**
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* @protected
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*/
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|
ol.Map.prototype.handleUserProjectionChanged = function() {
|
|
this.recalculateTransforms_();
|
|
};
|
|
|
|
|
|
/**
|
|
* @protected
|
|
*/
|
|
ol.Map.prototype.handleViewportResize = function() {
|
|
var size = new goog.math.Size(
|
|
this.target_.clientWidth, this.target_.clientHeight);
|
|
this.setSize(size);
|
|
};
|
|
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
ol.Map.prototype.recalculateExtent_ = function() {
|
|
var size = this.getSize();
|
|
var center = this.getCenter();
|
|
var resolution = this.getResolution();
|
|
if (!goog.isDef(size) || !goog.isDef(center) || !goog.isDef(resolution)) {
|
|
if (goog.isDef(this.getExtent())) {
|
|
this.set(ol.MapProperty.EXTENT, undefined);
|
|
}
|
|
} else {
|
|
var minX = center.x - resolution * size.width / 2;
|
|
var minY = center.y - resolution * size.height / 2;
|
|
var maxX = center.x + resolution * size.width / 2;
|
|
var maxY = center.y + resolution * size.height / 2;
|
|
var extent = new ol.Extent(minX, minY, maxX, maxY);
|
|
this.set(ol.MapProperty.EXTENT, extent);
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
ol.Map.prototype.recalculateTransforms_ = function() {
|
|
var projection = this.getProjection();
|
|
var userProjection = this.getUserProjection();
|
|
if (goog.isDefAndNotNull(projection) &&
|
|
goog.isDefAndNotNull(userProjection)) {
|
|
this.mapToUserTransform_ = ol.Projection.getTransform(
|
|
projection, userProjection);
|
|
this.userToMapTransform_ = ol.Projection.getTransform(
|
|
userProjection, projection);
|
|
} else {
|
|
this.mapToUserTransform_ = ol.Projection.cloneTransform;
|
|
this.userToMapTransform_ = ol.Projection.identityTransform;
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
*/
|
|
ol.Map.prototype.redraw = function() {
|
|
if (!this.animating_) {
|
|
if (this.freezeCount_ === 0) {
|
|
if (this.redrawInternal()) {
|
|
this.animate_();
|
|
}
|
|
} else {
|
|
this.dirty_ = true;
|
|
}
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* @protected
|
|
* @return {boolean} Animating.
|
|
*/
|
|
ol.Map.prototype.redrawInternal = function() {
|
|
this.dirty_ = false;
|
|
|
|
var animate = false;
|
|
|
|
this.forEachVisibleLayer(function(layer, layerRenderer) {
|
|
if (layerRenderer.redraw()) {
|
|
animate = true;
|
|
}
|
|
});
|
|
|
|
return animate;
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {ol.Layer} layer Layer.
|
|
* @return {ol.LayerRenderer} Layer renderer.
|
|
* @protected
|
|
*/
|
|
ol.Map.prototype.removeLayerRenderer = function(layer) {
|
|
var key = goog.getUid(layer);
|
|
if (key in this.layerRenderers) {
|
|
var layerRenderer = this.layerRenderers[key];
|
|
delete this.layerRenderers[key];
|
|
return layerRenderer;
|
|
} else {
|
|
return null;
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {string} backgroundColor Background color.
|
|
*/
|
|
ol.Map.prototype.setBackgroundColor = function(backgroundColor) {
|
|
goog.color.parse(backgroundColor);
|
|
this.set(ol.MapProperty.BACKGROUND_COLOR, backgroundColor);
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {ol.Coordinate} center Center.
|
|
*/
|
|
ol.Map.prototype.setCenter = function(center) {
|
|
this.set(ol.MapProperty.CENTER, center);
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {ol.Array} controls Controls.
|
|
*/
|
|
ol.Map.prototype.setControls = function(controls) {
|
|
this.set(ol.MapProperty.CONTROLS, controls);
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {ol.Layer} layer Layer.
|
|
* @param {ol.LayerRenderer} layerRenderer Layer renderer.
|
|
* @protected
|
|
*/
|
|
ol.Map.prototype.setLayerRenderer = function(layer, layerRenderer) {
|
|
var key = goog.getUid(layer);
|
|
goog.asserts.assert(!(key in this.layerRenderers));
|
|
this.layerRenderers[key] = layerRenderer;
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {ol.Array} layers Layers.
|
|
*/
|
|
ol.Map.prototype.setLayers = function(layers) {
|
|
this.set(ol.MapProperty.LAYERS, layers);
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {number} resolution Resolution.
|
|
*/
|
|
ol.Map.prototype.setResolution = function(resolution) {
|
|
this.set(ol.MapProperty.RESOLUTION, resolution);
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {goog.math.Size} size Size.
|
|
*/
|
|
ol.Map.prototype.setSize = function(size) {
|
|
var currentSize = this.getSize();
|
|
if (!goog.isDef(currentSize) || !goog.math.Size.equals(size, currentSize)) {
|
|
this.set(ol.MapProperty.SIZE, size);
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {ol.Projection} projection Projection.
|
|
*/
|
|
ol.Map.prototype.setProjection = function(projection) {
|
|
this.set(ol.MapProperty.PROJECTION, projection);
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {ol.Coordinate} userCenter Center in user projection.
|
|
*/
|
|
ol.Map.prototype.setUserCenter = function(userCenter) {
|
|
this.setCenter(this.userToMapTransform_(userCenter));
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {ol.Projection} userProjection User projection.
|
|
*/
|
|
ol.Map.prototype.setUserProjection = function(userProjection) {
|
|
this.set(ol.MapProperty.USER_PROJECTION, userProjection);
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {function(this: T)} f Function.
|
|
* @param {T=} opt_obj Object.
|
|
* @template T
|
|
*/
|
|
ol.Map.prototype.whileFrozen = function(f, opt_obj) {
|
|
this.freeze();
|
|
try {
|
|
f.call(opt_obj);
|
|
} finally {
|
|
this.thaw();
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
*/
|
|
ol.Map.prototype.thaw = function() {
|
|
goog.asserts.assert(this.freezeCount_ > 0);
|
|
if (--this.freezeCount_ === 0) {
|
|
if (!this.animating_ && this.dirty_) {
|
|
if (this.redrawInternal()) {
|
|
this.animate_();
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
|
|
|
|
/**
|
|
* @constructor
|
|
* @implements {goog.fx.anim.Animated}
|
|
* @param {!ol.Map} map Map.
|
|
*/
|
|
ol.MapAnimation = function(map) {
|
|
|
|
/**
|
|
* @private
|
|
* @type {ol.Map}
|
|
*/
|
|
this.map_ = map;
|
|
|
|
};
|
|
|
|
|
|
/**
|
|
* @inheritDoc
|
|
*/
|
|
ol.MapAnimation.prototype.onAnimationFrame = function() {
|
|
if (!this.map_.redrawInternal()) {
|
|
goog.fx.anim.unregisterAnimation(this);
|
|
}
|
|
};
|