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Ensure tile-loaded event completionCallback is called only once. Check when context2D used after cache creation.

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Aiosa 2023-01-28 08:42:07 +01:00
parent ca5cc84988
commit 947109718c
1 changed files with 9 additions and 4 deletions
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13
src/tiledimage.js
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@ -1655,17 +1655,17 @@ $.extend($.TiledImage.prototype, $.EventSource.prototype, /** @lends OpenSeadrag
* @param {XMLHttpRequest|undefined} tileRequest * @param {XMLHttpRequest|undefined} tileRequest
*/ */
_setTileLoaded: function(tile, data, cutoff, tileRequest) { _setTileLoaded: function(tile, data, cutoff, tileRequest) {
var increment = 0, var stopper = 1,
cached = false,
_this = this; _this = this;
function getCompletionCallback() { function getCompletionCallback() {
increment++;
return completionCallback; return completionCallback;
} }
function completionCallback() { function completionCallback() {
increment--; stopper--;
if (increment === 0) { if (stopper > 0) {
tile.loading = false; tile.loading = false;
tile.loaded = true; tile.loaded = true;
tile.hasTransparency = _this.source.hasTransparency( tile.hasTransparency = _this.source.hasTransparency(
@ -1678,8 +1678,13 @@ $.extend($.TiledImage.prototype, $.EventSource.prototype, /** @lends OpenSeadrag
cutoff: cutoff, cutoff: cutoff,
tiledImage: _this tiledImage: _this
}); });
cached = true;
} }
_this._needsDraw = true; _this._needsDraw = true;
} else if (tile.context2D && cached) {
$.console.error("The tile has been cached, yet tile.context2D was set afterwards." +
" The cache is orphaned now. To avoid this, increase the priority of 'tile-loaded' event " +
"attaching context2D property.");
} }
} }