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| goog.provide('ol.renderer.dom.Map');
goog.require('goog.asserts');
goog.require('goog.dom');
goog.require('goog.dom.TagName');
goog.require('goog.events');
goog.require('goog.events.Event');
goog.require('goog.events.EventType');
goog.require('goog.functions');
goog.require('goog.style');
goog.require('goog.vec.Mat4');
goog.require('ol');
goog.require('ol.RendererType');
goog.require('ol.css');
goog.require('ol.dom');
goog.require('ol.layer.Image');
goog.require('ol.layer.Layer');
goog.require('ol.layer.Tile');
goog.require('ol.layer.Vector');
goog.require('ol.render.Event');
goog.require('ol.render.EventType');
goog.require('ol.render.canvas.Immediate');
goog.require('ol.render.canvas.ReplayGroup');
goog.require('ol.renderer.Map');
goog.require('ol.renderer.dom.ImageLayer');
goog.require('ol.renderer.dom.Layer');
goog.require('ol.renderer.dom.TileLayer');
goog.require('ol.renderer.dom.VectorLayer');
goog.require('ol.renderer.vector');
goog.require('ol.source.State');
goog.require('ol.vec.Mat4');
/**
* @constructor
* @extends {ol.renderer.Map}
* @param {Element} container Container.
* @param {ol.Map} map Map.
*/
ol.renderer.dom.Map = function(container, map) {
goog.base(this, container, map);
/**
* @private
* @type {CanvasRenderingContext2D}
*/
this.context_ = null;
if (!(ol.LEGACY_IE_SUPPORT && ol.IS_LEGACY_IE)) {
this.context_ = ol.dom.createCanvasContext2D();
var canvas = this.context_.canvas;
canvas.style.position = 'absolute';
canvas.style.width = '100%';
canvas.style.height = '100%';
canvas.className = ol.css.CLASS_UNSELECTABLE;
goog.dom.insertChildAt(container, canvas, 0);
}
/**
* @private
* @type {!goog.vec.Mat4.Number}
*/
this.transform_ = goog.vec.Mat4.createNumber();
/**
* @type {!Element}
* @private
*/
this.layersPane_ = goog.dom.createElement(goog.dom.TagName.DIV);
this.layersPane_.className = ol.css.CLASS_UNSELECTABLE;
var style = this.layersPane_.style;
style.position = 'absolute';
style.width = '100%';
style.height = '100%';
// in IE < 9, we need to return false from ondragstart to cancel the default
// behavior of dragging images, which is interfering with the custom handler
// in the Drag interaction subclasses
if (ol.LEGACY_IE_SUPPORT && ol.IS_LEGACY_IE) {
this.layersPane_.ondragstart = goog.functions.FALSE;
this.layersPane_.onselectstart = goog.functions.FALSE;
}
// prevent the img context menu on mobile devices
goog.events.listen(this.layersPane_, goog.events.EventType.TOUCHSTART,
goog.events.Event.preventDefault);
goog.dom.insertChildAt(container, this.layersPane_, 0);
/**
* @private
* @type {boolean}
*/
this.renderedVisible_ = true;
};
goog.inherits(ol.renderer.dom.Map, ol.renderer.Map);
/**
* @inheritDoc
*/
ol.renderer.dom.Map.prototype.disposeInternal = function() {
goog.dom.removeNode(this.layersPane_);
goog.base(this, 'disposeInternal');
};
/**
* @inheritDoc
*/
ol.renderer.dom.Map.prototype.createLayerRenderer = function(layer) {
var layerRenderer;
if (ol.ENABLE_IMAGE && layer instanceof ol.layer.Image) {
layerRenderer = new ol.renderer.dom.ImageLayer(layer);
} else if (ol.ENABLE_TILE && layer instanceof ol.layer.Tile) {
layerRenderer = new ol.renderer.dom.TileLayer(layer);
} else if (!(ol.LEGACY_IE_SUPPORT && ol.IS_LEGACY_IE) &&
ol.ENABLE_VECTOR && layer instanceof ol.layer.Vector) {
layerRenderer = new ol.renderer.dom.VectorLayer(layer);
} else {
goog.asserts.fail('unexpected layer configuration');
return null;
}
return layerRenderer;
};
/**
* @param {ol.render.EventType} type Event type.
* @param {olx.FrameState} frameState Frame state.
* @private
*/
ol.renderer.dom.Map.prototype.dispatchComposeEvent_ =
function(type, frameState) {
var map = this.getMap();
if (!(ol.LEGACY_IE_SUPPORT && ol.IS_LEGACY_IE) && map.hasListener(type)) {
var extent = frameState.extent;
var pixelRatio = frameState.pixelRatio;
var viewState = frameState.viewState;
var resolution = viewState.resolution;
var rotation = viewState.rotation;
var context = this.context_;
var canvas = context.canvas;
ol.vec.Mat4.makeTransform2D(this.transform_,
canvas.width / 2,
canvas.height / 2,
pixelRatio / viewState.resolution,
-pixelRatio / viewState.resolution,
-viewState.rotation,
-viewState.center[0], -viewState.center[1]);
var vectorContext = new ol.render.canvas.Immediate(context, pixelRatio,
extent, this.transform_, rotation);
var replayGroup = new ol.render.canvas.ReplayGroup(
ol.renderer.vector.getTolerance(resolution, pixelRatio), extent,
resolution);
var composeEvent = new ol.render.Event(type, map, vectorContext,
replayGroup, frameState, context, null);
map.dispatchEvent(composeEvent);
replayGroup.finish();
if (!replayGroup.isEmpty()) {
replayGroup.replay(context, pixelRatio, this.transform_, rotation, {});
}
vectorContext.flush();
this.replayGroup = replayGroup;
}
};
/**
* @inheritDoc
*/
ol.renderer.dom.Map.prototype.getType = function() {
return ol.RendererType.DOM;
};
/**
* @inheritDoc
*/
ol.renderer.dom.Map.prototype.renderFrame = function(frameState) {
if (goog.isNull(frameState)) {
if (this.renderedVisible_) {
goog.style.setElementShown(this.layersPane_, false);
this.renderedVisible_ = false;
}
return;
}
/**
* @this {ol.renderer.dom.Map}
* @param {Element} elem
* @param {number} i
*/
var addChild;
// appendChild is actually more performant than insertBefore
// in IE 7 and 8. http://jsperf.com/reattaching-dom-nodes
if (ol.LEGACY_IE_SUPPORT && ol.IS_LEGACY_IE) {
addChild =
/**
* @this {ol.renderer.dom.Map}
* @param {Element} elem
*/ (
function(elem) {
goog.dom.appendChild(this.layersPane_, elem);
});
} else {
addChild =
/**
* @this {ol.renderer.dom.Map}
* @param {Element} elem
* @param {number} i
*/ (
function(elem, i) {
goog.dom.insertChildAt(this.layersPane_, elem, i);
});
}
var map = this.getMap();
if (!(ol.LEGACY_IE_SUPPORT && ol.IS_LEGACY_IE) &&
(map.hasListener(ol.render.EventType.PRECOMPOSE) ||
map.hasListener(ol.render.EventType.POSTCOMPOSE))) {
var canvas = this.context_.canvas;
var pixelRatio = frameState.pixelRatio;
canvas.width = frameState.size[0] * pixelRatio;
canvas.height = frameState.size[1] * pixelRatio;
}
this.dispatchComposeEvent_(ol.render.EventType.PRECOMPOSE, frameState);
var layerStatesArray = frameState.layerStatesArray;
var viewResolution = frameState.viewState.resolution;
var i, ii, layer, layerRenderer, layerState;
for (i = 0, ii = layerStatesArray.length; i < ii; ++i) {
layerState = layerStatesArray[i];
layer = layerState.layer;
layerRenderer = /** @type {ol.renderer.dom.Layer} */ (
this.getLayerRenderer(layer));
goog.asserts.assertInstanceof(layerRenderer, ol.renderer.dom.Layer,
'renderer is an instance of ol.renderer.dom.Layer');
addChild.call(this, layerRenderer.getTarget(), i);
if (ol.layer.Layer.visibleAtResolution(layerState, viewResolution) &&
layerState.sourceState == ol.source.State.READY) {
if (layerRenderer.prepareFrame(frameState, layerState)) {
layerRenderer.composeFrame(frameState, layerState);
}
} else {
layerRenderer.clearFrame();
}
}
var layerStates = frameState.layerStates;
var layerKey;
for (layerKey in this.getLayerRenderers()) {
if (!(layerKey in layerStates)) {
layerRenderer = this.getLayerRendererByKey(layerKey);
goog.asserts.assertInstanceof(layerRenderer, ol.renderer.dom.Layer,
'renderer is an instance of ol.renderer.dom.Layer');
goog.dom.removeNode(layerRenderer.getTarget());
}
}
if (!this.renderedVisible_) {
goog.style.setElementShown(this.layersPane_, true);
this.renderedVisible_ = true;
}
this.calculateMatrices2D(frameState);
this.scheduleRemoveUnusedLayerRenderers(frameState);
this.scheduleExpireIconCache(frameState);
this.dispatchComposeEvent_(ol.render.EventType.POSTCOMPOSE, frameState);
};
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