Replace ol.createMap with friendlier ol.Map constructor
This commit is contained in:
Tom Payne
227
src/ol/mapoptions.js
Normal file
227
src/ol/mapoptions.js
Normal file
@@ -0,0 +1,227 @@
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goog.provide('ol.MapOptions');
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goog.provide('ol.MapOptionsLiteral');
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goog.provide('ol.RendererHint');
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goog.require('ol.Collection');
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goog.require('ol.Projection');
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goog.require('ol.interaction.AltDragRotate');
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goog.require('ol.interaction.CenterConstraint');
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goog.require('ol.interaction.Constraints');
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goog.require('ol.interaction.DblClickZoom');
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goog.require('ol.interaction.DragPan');
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goog.require('ol.interaction.KeyboardPan');
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goog.require('ol.interaction.KeyboardZoom');
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goog.require('ol.interaction.MouseWheelZoom');
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goog.require('ol.interaction.ResolutionConstraint');
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goog.require('ol.interaction.RotationConstraint');
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goog.require('ol.interaction.ShiftDragZoom');
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goog.require('ol.renderer.Map');
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goog.require('ol.renderer.dom');
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goog.require('ol.renderer.dom.Map');
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goog.require('ol.renderer.webgl');
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goog.require('ol.renderer.webgl.Map');
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/**
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* @define {boolean} Whether to enable DOM.
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*/
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ol.ENABLE_DOM = true;
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/**
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* @define {boolean} Whether to enable WebGL.
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*/
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ol.ENABLE_WEBGL = true;
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/**
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* @enum {string}
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*/
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ol.RendererHint = {
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DOM: 'dom',
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WEBGL: 'webgl'
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};
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/**
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* @type {Array.<ol.RendererHint>}
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*/
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ol.DEFAULT_RENDERER_HINTS = [
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ol.RendererHint.WEBGL,
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ol.RendererHint.DOM
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];
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/**
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* @typedef {{center: (ol.Coordinate|undefined),
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* doubleClickZoom: (boolean|undefined),
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* dragPan: (boolean|undefined),
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* interactions: (ol.Collection|undefined),
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* keyboard: (boolean|undefined),
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* keyboardPanOffset: (number|undefined),
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* layers: (ol.Collection|undefined),
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* mouseWheelZoom: (boolean|undefined),
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* projection: (ol.Projection|string|undefined),
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* renderer: (ol.RendererHint|undefined),
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* renderers: (Array.<(ol.RendererHint)>|undefined),
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* resolution: (number|undefined),
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* rotate: (boolean|undefined),
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* shiftDragZoom: (boolean|undefined),
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* userProjection: (ol.Projection|string|undefined),
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* zoom: (number|undefined)}}
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*/
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ol.MapOptionsLiteral;
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/**
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* @constructor
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* @param {ol.MapOptionsLiteral} mapOptionsLiteral Map options.
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*/
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ol.MapOptions = function(mapOptionsLiteral) {
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/**
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* @type {Object.<string, *>}
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*/
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this.values = {};
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if (goog.isDef(mapOptionsLiteral.center)) {
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this.values[ol.MapProperty.CENTER] = mapOptionsLiteral.center;
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}
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this.values[ol.MapProperty.INTERACTIONS] =
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goog.isDef(mapOptionsLiteral.interactions) ?
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mapOptionsLiteral.interactions :
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ol.MapOptions.createInteractions_(mapOptionsLiteral);
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this.values[ol.MapProperty.LAYERS] = goog.isDef(mapOptionsLiteral.layers) ?
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mapOptionsLiteral.layers : new ol.Collection();
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this.values[ol.MapProperty.PROJECTION] = ol.MapOptions.createProjection_(
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mapOptionsLiteral.projection, 'EPSG:3857');
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if (goog.isDef(mapOptionsLiteral.resolution)) {
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this.values[ol.MapProperty.RESOLUTION] = mapOptionsLiteral.resolution;
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} else if (goog.isDef(mapOptionsLiteral.zoom)) {
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this.values[ol.MapProperty.RESOLUTION] =
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ol.Projection.EPSG_3857_HALF_SIZE / (128 << mapOptionsLiteral.zoom);
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}
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this.values[ol.MapProperty.USER_PROJECTION] = ol.MapOptions.createProjection_(
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mapOptionsLiteral.userProjection, 'EPSG:4326');
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/**
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* @type {function(new: ol.renderer.Map, Element, ol.Map)}
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*/
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this.rendererConstructor = ol.renderer.Map;
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/**
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* @type {Array.<ol.RendererHint>}
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*/
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var rendererHints;
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if (goog.isDef(mapOptionsLiteral.renderers)) {
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rendererHints = mapOptionsLiteral.renderers;
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} else if (goog.isDef(mapOptionsLiteral.renderer)) {
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rendererHints = [mapOptionsLiteral.renderer];
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} else {
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rendererHints = ol.DEFAULT_RENDERER_HINTS;
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}
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var i, rendererHint;
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for (i = 0; i < rendererHints.length; ++i) {
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rendererHint = rendererHints[i];
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if (rendererHint == ol.RendererHint.DOM) {
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if (ol.ENABLE_DOM && ol.renderer.dom.isSupported()) {
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this.rendererConstructor = ol.renderer.dom.Map;
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break;
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}
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} else if (rendererHint == ol.RendererHint.WEBGL) {
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if (ol.ENABLE_WEBGL && ol.renderer.webgl.isSupported()) {
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this.rendererConstructor = ol.renderer.webgl.Map;
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break;
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}
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}
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}
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};
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/**
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* @private
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* @param {ol.MapOptionsLiteral} mapOptionsLiteral Map options literal.
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* @return {ol.Collection} Interactions.
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*/
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ol.MapOptions.createInteractions_ = function(mapOptionsLiteral) {
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// FIXME this should be a configuration option
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var centerConstraint = ol.interaction.CenterConstraint.snapToPixel;
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var resolutionConstraint =
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ol.interaction.ResolutionConstraint.createSnapToPower(
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Math.exp(Math.log(2) / 8), ol.Projection.EPSG_3857_HALF_SIZE / 128);
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var rotationConstraint = ol.interaction.RotationConstraint.none;
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var constraints = new ol.interaction.Constraints(
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centerConstraint, resolutionConstraint, rotationConstraint);
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var interactions = new ol.Collection();
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var rotate = goog.isDef(mapOptionsLiteral.rotate) ?
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mapOptionsLiteral.rotate : true;
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if (rotate) {
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interactions.push(new ol.interaction.AltDragRotate(constraints));
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}
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var doubleClickZoom = goog.isDef(mapOptionsLiteral.doubleClickZoom) ?
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mapOptionsLiteral.doubleClickZoom : true;
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if (doubleClickZoom) {
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interactions.push(new ol.interaction.DblClickZoom(constraints));
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}
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var dragPan = goog.isDef(mapOptionsLiteral.dragPan) ?
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mapOptionsLiteral.dragPan : true;
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if (dragPan) {
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interactions.push(new ol.interaction.DragPan(constraints));
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}
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var keyboard = goog.isDef(mapOptionsLiteral.keyboard) ?
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mapOptionsLiteral.keyboard : true;
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var keyboardPanOffset = goog.isDef(mapOptionsLiteral.keyboardPanOffset) ?
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mapOptionsLiteral.keyboardPanOffset : 80;
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if (keyboard) {
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interactions.push(
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new ol.interaction.KeyboardPan(constraints, keyboardPanOffset));
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interactions.push(new ol.interaction.KeyboardZoom(constraints));
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}
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var mouseWheelZoom = goog.isDef(mapOptionsLiteral.mouseWheelZoom) ?
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mapOptionsLiteral.mouseWheelZoom : true;
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if (mouseWheelZoom) {
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interactions.push(new ol.interaction.MouseWheelZoom(constraints));
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}
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var shiftDragZoom = goog.isDef(mapOptionsLiteral.shiftDragZoom) ?
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mapOptionsLiteral.shiftDragZoom : true;
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if (shiftDragZoom) {
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interactions.push(new ol.interaction.ShiftDragZoom(constraints));
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}
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return interactions;
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};
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/**
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* @private
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* @param {ol.Projection|string|undefined} projection Projection.
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* @param {string} defaultCode Default code.
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* @return {ol.Projection} Projection.
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*/
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ol.MapOptions.createProjection_ = function(projection, defaultCode) {
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if (!goog.isDefAndNotNull(projection)) {
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return ol.Projection.getFromCode(defaultCode);
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} else if (goog.isString(projection)) {
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return ol.Projection.getFromCode(projection);
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} else {
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goog.asserts.assert(projection instanceof ol.Projection);
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return projection;
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}
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};
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