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| goog.provide('ol.style.GeometryFunction');
goog.provide('ol.style.Style');
goog.provide('ol.style.StyleFunction');
goog.provide('ol.style.defaultGeometryFunction');
goog.require('goog.asserts');
goog.require('ol.geom.Geometry');
goog.require('ol.geom.GeometryType');
goog.require('ol.style.Circle');
goog.require('ol.style.Fill');
goog.require('ol.style.Image');
goog.require('ol.style.Stroke');
/**
* @classdesc
* Container for vector feature rendering styles. Any changes made to the style
* or its children through `set*()` methods will not take effect until the
* feature or layer that uses the style is re-rendered.
*
* @constructor
* @param {olx.style.StyleOptions=} opt_options Style options.
* @api
*/
ol.style.Style = function(opt_options) {
var options = opt_options || {};
/**
* @private
* @type {string|ol.geom.Geometry|ol.style.GeometryFunction}
*/
this.geometry_ = null;
/**
* @private
* @type {!ol.style.GeometryFunction}
*/
this.geometryFunction_ = ol.style.defaultGeometryFunction;
Iif (options.geometry !== undefined) {
this.setGeometry(options.geometry);
}
/**
* @private
* @type {ol.style.Fill}
*/
this.fill_ = options.fill !== undefined ? options.fill : null;
/**
* @private
* @type {ol.style.Image}
*/
this.image_ = options.image !== undefined ? options.image : null;
/**
* @private
* @type {ol.style.Stroke}
*/
this.stroke_ = options.stroke !== undefined ? options.stroke : null;
/**
* @private
* @type {ol.style.Text}
*/
this.text_ = options.text !== undefined ? options.text : null;
/**
* @private
* @type {number|undefined}
*/
this.zIndex_ = options.zIndex;
};
/**
* Get the geometry to be rendered.
* @return {string|ol.geom.Geometry|ol.style.GeometryFunction}
* Feature property or geometry or function that returns the geometry that will
* be rendered with this style.
* @api
*/
ol.style.Style.prototype.getGeometry = function() {
return this.geometry_;
};
/**
* Get the function used to generate a geometry for rendering.
* @return {!ol.style.GeometryFunction} Function that is called with a feature
* and returns the geometry to render instead of the feature's geometry.
* @api
*/
ol.style.Style.prototype.getGeometryFunction = function() {
return this.geometryFunction_;
};
/**
* Get the fill style.
* @return {ol.style.Fill} Fill style.
* @api
*/
ol.style.Style.prototype.getFill = function() {
return this.fill_;
};
/**
* Get the image style.
* @return {ol.style.Image} Image style.
* @api
*/
ol.style.Style.prototype.getImage = function() {
return this.image_;
};
/**
* Get the stroke style.
* @return {ol.style.Stroke} Stroke style.
* @api
*/
ol.style.Style.prototype.getStroke = function() {
return this.stroke_;
};
/**
* Get the text style.
* @return {ol.style.Text} Text style.
* @api
*/
ol.style.Style.prototype.getText = function() {
return this.text_;
};
/**
* Get the z-index for the style.
* @return {number|undefined} ZIndex.
* @api
*/
ol.style.Style.prototype.getZIndex = function() {
return this.zIndex_;
};
/**
* Set a geometry that is rendered instead of the feature's geometry.
*
* @param {string|ol.geom.Geometry|ol.style.GeometryFunction} geometry
* Feature property or geometry or function returning a geometry to render
* for this style.
* @api
*/
ol.style.Style.prototype.setGeometry = function(geometry) {
if (goog.isFunction(geometry)) {
this.geometryFunction_ = geometry;
} else if (goog.isString(geometry)) {
this.geometryFunction_ = function(feature) {
var result = feature.get(geometry);
Eif (result) {
goog.asserts.assertInstanceof(result, ol.geom.Geometry,
'feature geometry must be an ol.geom.Geometry instance');
}
return result;
};
} else if (!geometry) {
this.geometryFunction_ = ol.style.defaultGeometryFunction;
} else Eif (geometry !== undefined) {
goog.asserts.assertInstanceof(geometry, ol.geom.Geometry,
'geometry must be an ol.geom.Geometry instance');
this.geometryFunction_ = function() {
return geometry;
};
}
this.geometry_ = geometry;
};
/**
* Set the z-index.
*
* @param {number|undefined} zIndex ZIndex.
* @api
*/
ol.style.Style.prototype.setZIndex = function(zIndex) {
this.zIndex_ = zIndex;
};
/**
* A function that takes an {@link ol.Feature} and a `{number}` representing
* the view's resolution. The function should return an array of
* {@link ol.style.Style}. This way e.g. a vector layer can be styled.
*
* @typedef {function((ol.Feature|ol.render.Feature), number):
* Array.<ol.style.Style>}
* @api
*/
ol.style.StyleFunction;
/**
* Convert the provided object into a style function. Functions passed through
* unchanged. Arrays of ol.style.Style or single style objects wrapped in a
* new style function.
* @param {ol.style.StyleFunction|Array.<ol.style.Style>|ol.style.Style} obj
* A style function, a single style, or an array of styles.
* @return {ol.style.StyleFunction} A style function.
*/
ol.style.createStyleFunction = function(obj) {
var styleFunction;
if (goog.isFunction(obj)) {
styleFunction = obj;
} else {
/**
* @type {Array.<ol.style.Style>}
*/
var styles;
if (goog.isArray(obj)) {
styles = obj;
} else {
goog.asserts.assertInstanceof(obj, ol.style.Style,
'obj geometry must be an ol.style.Style instance');
styles = [obj];
}
styleFunction = function() {
return styles;
};
}
return styleFunction;
};
/**
* @type {Array.<ol.style.Style>}
* @private
*/
ol.style.defaultStyle_ = null;
/**
* @param {ol.Feature|ol.render.Feature} feature Feature.
* @param {number} resolution Resolution.
* @return {Array.<ol.style.Style>} Style.
*/
ol.style.defaultStyleFunction = function(feature, resolution) {
// We don't use an immediately-invoked function
// and a closure so we don't get an error at script evaluation time in
// browsers that do not support Canvas. (ol.style.Circle does
// canvas.getContext('2d') at construction time, which will cause an.error
// in such browsers.)
if (!ol.style.defaultStyle_) {
var fill = new ol.style.Fill({
color: 'rgba(255,255,255,0.4)'
});
var stroke = new ol.style.Stroke({
color: '#3399CC',
width: 1.25
});
ol.style.defaultStyle_ = [
new ol.style.Style({
image: new ol.style.Circle({
fill: fill,
stroke: stroke,
radius: 5
}),
fill: fill,
stroke: stroke
})
];
}
return ol.style.defaultStyle_;
};
/**
* Default styles for editing features.
* @return {Object.<ol.geom.GeometryType, Array.<ol.style.Style>>} Styles
*/
ol.style.createDefaultEditingStyles = function() {
/** @type {Object.<ol.geom.GeometryType, Array.<ol.style.Style>>} */
var styles = {};
var white = [255, 255, 255, 1];
var blue = [0, 153, 255, 1];
var width = 3;
styles[ol.geom.GeometryType.POLYGON] = [
new ol.style.Style({
fill: new ol.style.Fill({
color: [255, 255, 255, 0.5]
})
})
];
styles[ol.geom.GeometryType.MULTI_POLYGON] =
styles[ol.geom.GeometryType.POLYGON];
styles[ol.geom.GeometryType.LINE_STRING] = [
new ol.style.Style({
stroke: new ol.style.Stroke({
color: white,
width: width + 2
})
}),
new ol.style.Style({
stroke: new ol.style.Stroke({
color: blue,
width: width
})
})
];
styles[ol.geom.GeometryType.MULTI_LINE_STRING] =
styles[ol.geom.GeometryType.LINE_STRING];
styles[ol.geom.GeometryType.CIRCLE] =
styles[ol.geom.GeometryType.POLYGON].concat(
styles[ol.geom.GeometryType.LINE_STRING]
);
styles[ol.geom.GeometryType.POINT] = [
new ol.style.Style({
image: new ol.style.Circle({
radius: width * 2,
fill: new ol.style.Fill({
color: blue
}),
stroke: new ol.style.Stroke({
color: white,
width: width / 2
})
}),
zIndex: Infinity
})
];
styles[ol.geom.GeometryType.MULTI_POINT] =
styles[ol.geom.GeometryType.POINT];
styles[ol.geom.GeometryType.GEOMETRY_COLLECTION] =
styles[ol.geom.GeometryType.POLYGON].concat(
styles[ol.geom.GeometryType.LINE_STRING],
styles[ol.geom.GeometryType.POINT]
);
return styles;
};
/**
* A function that takes an {@link ol.Feature} as argument and returns an
* {@link ol.geom.Geometry} that will be rendered and styled for the feature.
*
* @typedef {function((ol.Feature|ol.render.Feature)):
* (ol.geom.Geometry|ol.render.Feature|undefined)}
* @api
*/
ol.style.GeometryFunction;
/**
* Function that is called with a feature and returns its default geometry.
* @param {ol.Feature|ol.render.Feature} feature Feature to get the geometry
* for.
* @return {ol.geom.Geometry|ol.render.Feature|undefined} Geometry to render.
*/
ol.style.defaultGeometryFunction = function(feature) {
goog.asserts.assert(feature, 'feature must not be null');
return feature.getGeometry();
};
|