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-rw-r--r--media/visualize.js129
1 files changed, 129 insertions, 0 deletions
diff --git a/media/visualize.js b/media/visualize.js
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+function packages_treemap(chart_id, orderings, default_order) {
+ var jq_div = $(chart_id),
+ color = d3.scale.category20();
+ var key_func = function(d) { return d.key; };
+ var value_package_count = function(d) { return d.count; },
+ value_flagged_count = function(d) { return d.flagged; },
+ value_compressed_size = function(d) { return d.csize; },
+ value_installed_size = function(d) { return d.isize; };
+
+ /* tag the function so when we display, we can format filesizes */
+ value_package_count.is_size = value_flagged_count.is_size = false;
+ value_compressed_size.is_size = value_installed_size.is_size = true;
+
+ var treemap = d3.layout.treemap()
+ .size([jq_div.width(), jq_div.height()])
+ /*.sticky(true)*/
+ .value(value_package_count)
+ .sort(function(a, b) { return a.key < b.key; })
+ .children(function(d) { return d.data; });
+
+ var cell_html = function(d) {
+ if (d.children) {
+ return "";
+ }
+ var valuefunc = treemap.value();
+ var value = valuefunc(d);
+ if (valuefunc.is_size && value !== undefined) {
+ value = format_filesize(value);
+ }
+ return "<span>" + d.name + ": " + value + "</span>";
+ };
+
+ var d3_div = d3.select(jq_div.get(0));
+
+ var prop_px = function(prop, offset) {
+ return function(d) {
+ var dist = d[prop] + offset;
+ if (dist > 0) {
+ return dist + "px";
+ }
+ else {
+ return "0px";
+ }
+ };
+ };
+
+ var cell = function() {
+ /* the -1 offset comes from the border width we use in the CSS */
+ this.style("left", prop_px("x", 0)).style("top", prop_px("y", 0))
+ .style("width", prop_px("dx", -1)).style("height", prop_px("dy", -1));
+ };
+
+ var fetch_for_ordering = function(order) {
+ d3.json(order.url, function(json) {
+ var nodes = d3_div.data([json]).selectAll("div")
+ .data(treemap.nodes, key_func);
+ /* start out new nodes in the center of the picture area */
+ var w_center = jq_div.width() / 2;
+ h_center = jq_div.height() / 2;
+ nodes.enter().append("div")
+ .attr("class", "treemap-cell")
+ .attr("title", function(d) { return d.name; })
+ .style("left", w_center + "px").style("top", h_center + "px")
+ .style("width", "0px").style("height", "0px")
+ .style("display", function(d) { return d.children ? "none" : null; })
+ .html(cell_html);
+ nodes.transition().duration(1500)
+ .style("background-color", function(d) { return d.children ? null : color(d[order.color_attr]); })
+ .call(cell);
+ nodes.exit().transition().duration(1500).remove();
+ });
+ };
+
+ /* start the callback for the default order */
+ fetch_for_ordering(orderings[default_order]);
+
+ var make_scale_button = function(name, valuefunc) {
+ var button_id = chart_id + "-" + name;
+ /* upon button click, attach new value function and redraw all boxes
+ * accordingly */
+ d3.select(button_id).on("click", function() {
+ d3_div.selectAll("div")
+ .data(treemap.value(valuefunc), key_func)
+ .html(cell_html)
+ .transition().duration(1500).call(cell);
+
+ /* drop off the '#' sign to convert id to a class prefix */
+ d3.selectAll("." + chart_id.substring(1) + "-scaleby")
+ .classed("active", false);
+ d3.select(button_id).classed("active", true);
+ });
+ };
+
+ /* each scale button tweaks our value, e.g. net size function */
+ make_scale_button("count", value_package_count);
+ make_scale_button("flagged", value_flagged_count);
+ make_scale_button("csize", value_compressed_size);
+ make_scale_button("isize", value_installed_size);
+
+ var make_group_button = function(name, order) {
+ var button_id = chart_id + "-" + name;
+ d3.select(button_id).on("click", function() {
+ fetch_for_ordering(order);
+
+ /* drop off the '#' sign to convert id to a class prefix */
+ d3.selectAll("." + chart_id.substring(1) + "-groupby")
+ .classed("active", false);
+ d3.select(button_id).classed("active", true);
+ });
+ };
+
+ $.each(orderings, function(k, v) {
+ make_group_button(k, v);
+ });
+
+ var resize_timeout = null;
+ var real_resize = function() {
+ resize_timeout = null;
+ d3_div.selectAll("div")
+ .data(treemap.size([jq_div.width(), jq_div.height()]), key_func)
+ .call(cell);
+ };
+ $(window).resize(function() {
+ if (resize_timeout) {
+ clearTimeout(resize_timeout);
+ }
+ resize_timeout = setTimeout(real_resize, 200);
+ });
+}