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offset #103

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10 changes: 8 additions & 2 deletions clusterize.js
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Original file line number Diff line number Diff line change
Expand Up @@ -190,12 +190,18 @@
opts.block_height = opts.item_height * opts.rows_in_block;
opts.rows_in_cluster = opts.blocks_in_cluster * opts.rows_in_block;
opts.cluster_height = opts.blocks_in_cluster * opts.block_height;
opts.top_offset = this.content_elem.offsetTop;
opts.content_height = (rows.length * opts.item_height);
return prev_item_height != opts.item_height;
},
// get current cluster number
getClusterNum: function () {
this.options.scroll_top = this.scroll_elem.scrollTop;
return Math.floor(this.options.scroll_top / (this.options.cluster_height - this.options.block_height)) || 0;
var opts = this.options;
opts.scroll_top = this.scroll_elem.scrollTop - opts.top_offset;
if (opts.scroll_top >= opts.content_height) {
return Math.floor(opts.scroll_top / opts.content_height);
}
return Math.floor(opts.scroll_top / (opts.cluster_height - opts.block_height));
},
// generate empty row if no data provided
generateEmptyRow: function() {
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29 changes: 15 additions & 14 deletions clusterize.min.js
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