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| goog.provide('ol.renderer.Map');
goog.require('ol');
goog.require('ol.Disposable');
goog.require('ol.events');
goog.require('ol.events.EventType');
goog.require('ol.extent');
goog.require('ol.functions');
goog.require('ol.layer.Layer');
goog.require('ol.plugins');
goog.require('ol.style');
goog.require('ol.transform');
/**
* @constructor
* @abstract
* @extends {ol.Disposable}
* @param {Element} container Container.
* @param {ol.PluggableMap} map Map.
* @struct
*/
ol.renderer.Map = function(container, map) {
ol.Disposable.call(this);
/**
* @private
* @type {ol.PluggableMap}
*/
this.map_ = map;
/**
* @private
* @type {Object.<string, ol.renderer.Layer>}
*/
this.layerRenderers_ = {};
/**
* @private
* @type {Object.<string, ol.EventsKey>}
*/
this.layerRendererListeners_ = {};
};
ol.inherits(ol.renderer.Map, ol.Disposable);
/**
* @param {olx.FrameState} frameState FrameState.
* @protected
*/
ol.renderer.Map.prototype.calculateMatrices2D = function(frameState) {
var viewState = frameState.viewState;
var coordinateToPixelTransform = frameState.coordinateToPixelTransform;
var pixelToCoordinateTransform = frameState.pixelToCoordinateTransform;
ol.transform.compose(coordinateToPixelTransform,
frameState.size[0] / 2, frameState.size[1] / 2,
1 / viewState.resolution, -1 / viewState.resolution,
-viewState.rotation,
-viewState.center[0], -viewState.center[1]);
ol.transform.invert(
ol.transform.setFromArray(pixelToCoordinateTransform, coordinateToPixelTransform));
};
/**
* @inheritDoc
*/
ol.renderer.Map.prototype.disposeInternal = function() {
for (var id in this.layerRenderers_) {
this.layerRenderers_[id].dispose();
}
};
/**
* @param {ol.PluggableMap} map Map.
* @param {olx.FrameState} frameState Frame state.
* @private
*/
ol.renderer.Map.expireIconCache_ = function(map, frameState) {
var cache = ol.style.iconImageCache;
cache.expire();
};
/**
* @param {ol.Coordinate} coordinate Coordinate.
* @param {olx.FrameState} frameState FrameState.
* @param {number} hitTolerance Hit tolerance in pixels.
* @param {function(this: S, (ol.Feature|ol.render.Feature),
* ol.layer.Layer): T} callback Feature callback.
* @param {S} thisArg Value to use as `this` when executing `callback`.
* @param {function(this: U, ol.layer.Layer): boolean} layerFilter Layer filter
* function, only layers which are visible and for which this function
* returns `true` will be tested for features. By default, all visible
* layers will be tested.
* @param {U} thisArg2 Value to use as `this` when executing `layerFilter`.
* @return {T|undefined} Callback result.
* @template S,T,U
*/
ol.renderer.Map.prototype.forEachFeatureAtCoordinate = function(coordinate, frameState, hitTolerance, callback, thisArg,
layerFilter, thisArg2) {
var result;
var viewState = frameState.viewState;
var viewResolution = viewState.resolution;
/**
* @param {ol.Feature|ol.render.Feature} feature Feature.
* @param {ol.layer.Layer} layer Layer.
* @return {?} Callback result.
*/
function forEachFeatureAtCoordinate(feature, layer) {
var key = ol.getUid(feature).toString();
var managed = frameState.layerStates[ol.getUid(layer)].managed;
if (!(key in frameState.skippedFeatureUids && !managed)) {
return callback.call(thisArg, feature, managed ? layer : null);
}
}
var projection = viewState.projection;
var translatedCoordinate = coordinate;
Eif (projection.canWrapX()) {
var projectionExtent = projection.getExtent();
var worldWidth = ol.extent.getWidth(projectionExtent);
var x = coordinate[0];
Iif (x < projectionExtent[0] || x > projectionExtent[2]) {
var worldsAway = Math.ceil((projectionExtent[0] - x) / worldWidth);
translatedCoordinate = [x + worldWidth * worldsAway, coordinate[1]];
}
}
var layerStates = frameState.layerStatesArray;
var numLayers = layerStates.length;
var i;
for (i = numLayers - 1; i >= 0; --i) {
var layerState = layerStates[i];
var layer = layerState.layer;
if (ol.layer.Layer.visibleAtResolution(layerState, viewResolution) &&
layerFilter.call(thisArg2, layer)) {
var layerRenderer = this.getLayerRenderer(layer);
if (layer.getSource()) {
result = layerRenderer.forEachFeatureAtCoordinate(
layer.getSource().getWrapX() ? translatedCoordinate : coordinate,
frameState, hitTolerance, forEachFeatureAtCoordinate, thisArg);
}
if (result) {
return result;
}
}
}
return undefined;
};
/**
* @abstract
* @param {ol.Pixel} pixel Pixel.
* @param {olx.FrameState} frameState FrameState.
* @param {function(this: S, ol.layer.Layer, (Uint8ClampedArray|Uint8Array)): T} callback Layer
* callback.
* @param {S} thisArg Value to use as `this` when executing `callback`.
* @param {function(this: U, ol.layer.Layer): boolean} layerFilter Layer filter
* function, only layers which are visible and for which this function
* returns `true` will be tested for features. By default, all visible
* layers will be tested.
* @param {U} thisArg2 Value to use as `this` when executing `layerFilter`.
* @return {T|undefined} Callback result.
* @template S,T,U
*/
ol.renderer.Map.prototype.forEachLayerAtPixel = function(pixel, frameState, callback, thisArg,
layerFilter, thisArg2) {};
/**
* @param {ol.Coordinate} coordinate Coordinate.
* @param {olx.FrameState} frameState FrameState.
* @param {number} hitTolerance Hit tolerance in pixels.
* @param {function(this: U, ol.layer.Layer): boolean} layerFilter Layer filter
* function, only layers which are visible and for which this function
* returns `true` will be tested for features. By default, all visible
* layers will be tested.
* @param {U} thisArg Value to use as `this` when executing `layerFilter`.
* @return {boolean} Is there a feature at the given coordinate?
* @template U
*/
ol.renderer.Map.prototype.hasFeatureAtCoordinate = function(coordinate, frameState, hitTolerance, layerFilter, thisArg) {
var hasFeature = this.forEachFeatureAtCoordinate(
coordinate, frameState, hitTolerance, ol.functions.TRUE, this, layerFilter, thisArg);
return hasFeature !== undefined;
};
/**
* @param {ol.layer.Layer} layer Layer.
* @protected
* @return {ol.renderer.Layer} Layer renderer.
*/
ol.renderer.Map.prototype.getLayerRenderer = function(layer) {
var layerKey = ol.getUid(layer).toString();
if (layerKey in this.layerRenderers_) {
return this.layerRenderers_[layerKey];
} else {
var layerRendererPlugins = ol.plugins.getLayerRendererPlugins();
var renderer;
var type = this.getType();
for (var i = 0, ii = layerRendererPlugins.length; i < ii; ++i) {
var plugin = layerRendererPlugins[i];
if (plugin.handles(type, layer)) {
renderer = plugin.create(this, layer);
break;
}
}
Eif (renderer) {
this.layerRenderers_[layerKey] = renderer;
this.layerRendererListeners_[layerKey] = ol.events.listen(renderer,
ol.events.EventType.CHANGE, this.handleLayerRendererChange_, this);
} else {
throw new Error('Unable to create renderer for layer: ' + layer.getType());
}
return renderer;
}
};
/**
* @param {string} layerKey Layer key.
* @protected
* @return {ol.renderer.Layer} Layer renderer.
*/
ol.renderer.Map.prototype.getLayerRendererByKey = function(layerKey) {
return this.layerRenderers_[layerKey];
};
/**
* @protected
* @return {Object.<string, ol.renderer.Layer>} Layer renderers.
*/
ol.renderer.Map.prototype.getLayerRenderers = function() {
return this.layerRenderers_;
};
/**
* @return {ol.PluggableMap} Map.
*/
ol.renderer.Map.prototype.getMap = function() {
return this.map_;
};
/**
* @abstract
* @return {ol.renderer.Type} Type
*/
ol.renderer.Map.prototype.getType = function() {};
/**
* Handle changes in a layer renderer.
* @private
*/
ol.renderer.Map.prototype.handleLayerRendererChange_ = function() {
this.map_.render();
};
/**
* @param {string} layerKey Layer key.
* @return {ol.renderer.Layer} Layer renderer.
* @private
*/
ol.renderer.Map.prototype.removeLayerRendererByKey_ = function(layerKey) {
var layerRenderer = this.layerRenderers_[layerKey];
delete this.layerRenderers_[layerKey];
ol.events.unlistenByKey(this.layerRendererListeners_[layerKey]);
delete this.layerRendererListeners_[layerKey];
return layerRenderer;
};
/**
* Render.
* @param {?olx.FrameState} frameState Frame state.
*/
ol.renderer.Map.prototype.renderFrame = ol.nullFunction;
/**
* @param {ol.PluggableMap} map Map.
* @param {olx.FrameState} frameState Frame state.
* @private
*/
ol.renderer.Map.prototype.removeUnusedLayerRenderers_ = function(map, frameState) {
var layerKey;
for (layerKey in this.layerRenderers_) {
if (!frameState || !(layerKey in frameState.layerStates)) {
this.removeLayerRendererByKey_(layerKey).dispose();
}
}
};
/**
* @param {olx.FrameState} frameState Frame state.
* @protected
*/
ol.renderer.Map.prototype.scheduleExpireIconCache = function(frameState) {
frameState.postRenderFunctions.push(
/** @type {ol.PostRenderFunction} */ (ol.renderer.Map.expireIconCache_)
);
};
/**
* @param {!olx.FrameState} frameState Frame state.
* @protected
*/
ol.renderer.Map.prototype.scheduleRemoveUnusedLayerRenderers = function(frameState) {
var layerKey;
for (layerKey in this.layerRenderers_) {
Iif (!(layerKey in frameState.layerStates)) {
frameState.postRenderFunctions.push(
/** @type {ol.PostRenderFunction} */ (this.removeUnusedLayerRenderers_.bind(this))
);
return;
}
}
};
/**
* @param {ol.LayerState} state1 First layer state.
* @param {ol.LayerState} state2 Second layer state.
* @return {number} The zIndex difference.
*/
ol.renderer.Map.sortByZIndex = function(state1, state2) {
return state1.zIndex - state2.zIndex;
};
|