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Handle tile source revisions in DOM tile layer renderer

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This commit is contained in:
Tom Payne
2013-09-06 16:51:45 +02:00
committed by Éric Lemoine
parent 00bdeb6bcf
commit 8663a5027b
1 changed files with 20 additions and 2 deletions
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22
src/ol/renderer/dom/domtilelayerrenderer.js
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@@ -49,6 +49,12 @@ ol.renderer.dom.TileLayer = function(mapRenderer, tileLayer) {
*/
this.renderedOpacity_ = 1;
/**
* @private
* @type {number}
*/
this.renderedRevision_ = 0;
/**
* @private
* @type {Object.<number, ol.renderer.dom.TileLayerZ_>}
@@ -145,6 +151,19 @@ ol.renderer.dom.TileLayer.prototype.renderFrame =
}
// If the tile source revision changes, we destroy the existing DOM structure
// so that a new one will be created. It would be more efficient to modify
// the existing structure.
var tileLayerZ, tileLayerZKey;
if (this.renderedRevision_ != tileSource.getRevision()) {
for (tileLayerZKey in this.tileLayerZs_) {
tileLayerZ = this.tileLayerZs_[+tileLayerZKey];
goog.dom.removeNode(tileLayerZ.target);
}
this.tileLayerZs_ = {};
this.renderedRevision_ = tileSource.getRevision();
}
/** @type {Array.<number>} */
var zs = goog.array.map(goog.object.getKeys(tilesToDrawByZ), Number);
goog.array.sort(zs);
@@ -152,8 +171,7 @@ ol.renderer.dom.TileLayer.prototype.renderFrame =
/** @type {Object.<number, boolean>} */
var newTileLayerZKeys = {};
var iz, iziz;
var tileCoordKey, tileCoordOrigin, tileLayerZ, tileLayerZKey, tilesToDraw;
var iz, iziz, tileCoordKey, tileCoordOrigin, tilesToDraw;
for (iz = 0, iziz = zs.length; iz < iziz; ++iz) {
tileLayerZKey = zs[iz];
if (tileLayerZKey in this.tileLayerZs_) {