clustergrammer
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This is a clustergram implemented in D3.js. I started from the example http://bost.ocks.org/mike/miserables/ and added the following features
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JavaScript
module.exports = function d3_tip_custom(){
/* eslint-disable */
// Copyright (c) 2013 Justin Palmer
//
// Tooltips for d3.js SVG visualizations
// Public - contructs a new tooltip
//
// Returns a tip
// ******************
// Nick Fernandez modified version 4-19-2016
// improved multiple svg, scrolling+zooming support
// made syntax fixes
//////////////////////////////////////////////
var direction = d3_tip_direction,
offset = d3_tip_offset,
html = d3_tip_html,
node = initNode(),
svg = null,
point = null,
target = null;
function tip(vis) {
svg = getSVGNode(vis);
point = svg.createSVGPoint();
document.body.appendChild(node);
}
// Public - show the tooltip on the screen
//
// Returns a tip
tip.show = function() {
var args = Array.prototype.slice.call(arguments);
if (args[args.length - 1] instanceof SVGElement) {
target = args.pop();
}
var content = html.apply(this, args);
var poffset = offset.apply(this, args);
var dir = direction.apply(this, args);
var nodel = d3.select(node);
var i = 0;
var coords;
nodel.html(content)
.style({opacity: 1, 'pointer-events': 'all'});
while(i--) {
nodel.classed(directions[i], false);
}
coords = direction_callbacks.get(dir).apply(this);
nodel.classed(dir, true).style({
top: (coords.top + poffset[0]) + 'px',
left: (coords.left + poffset[1]) + 'px'
});
// quick fix for fading tile tooltips
if (isFunction(this) === false){
var inst_class = d3.select(this).attr('class');
if (inst_class.indexOf('tile') >= 0){
setTimeout(fade_tips, 5000, this);
}
}
return tip;
};
// Public - hide the tooltip
//
// Returns a tip
tip.hide = function() {
var nodel = d3.select(node);
nodel.style({opacity: 0, 'pointer-events': 'none'});
return tip;
};
// Public: Proxy attr calls to the d3 tip container. Sets or gets attribute value.
//
// n - name of the attribute
// v - value of the attribute
//
// Returns tip or attribute value
tip.attr = function(n) {
if (arguments.length < 2 && typeof n === 'string') {
return d3.select(node).attr(n);
} else {
var args = Array.prototype.slice.call(arguments);
d3.selection.prototype.attr.apply(d3.select(node), args);
}
return tip;
};
// Public: Proxy style calls to the d3 tip container. Sets or gets a style value.
//
// n - name of the property
// v - value of the property
//
// Returns tip or style property value
tip.style = function(n) {
if (arguments.length < 2 && typeof n === 'string') {
return d3.select(node).style(n);
} else {
var args = Array.prototype.slice.call(arguments);
d3.selection.prototype.style.apply(d3.select(node), args);
}
return tip;
};
// Public: Set or get the direction of the tooltip
//
// v - One of n(north), s(south), e(east), or w(west), nw(northwest),
// sw(southwest), ne(northeast) or se(southeast)
//
// Returns tip or direction
tip.direction = function(v) {
if (!arguments.length){
return direction;
}
direction = v == null ? v : d3.functor(v);
return tip;
};
// Public: Sets or gets the offset of the tip
//
// v - Array of [x, y] offset
//
// Returns offset or
tip.offset = function(v) {
if (!arguments.length) {
return offset;
}
offset = v == null ? v : d3.functor(v);
return tip;
};
// Public: sets or gets the html value of the tooltip
//
// v - String value of the tip
//
// Returns html value or tip
tip.html = function(v) {
if (!arguments.length) {
return html;
}
html = v == null ? v : d3.functor(v);
return tip;
};
function d3_tip_direction() {
return 'n';
}
function d3_tip_offset() {
return [0, 0];
}
function d3_tip_html() {
return ' ';
}
var direction_callbacks = d3.map({
n: direction_n,
s: direction_s,
e: direction_e,
w: direction_w,
nw: direction_nw,
ne: direction_ne,
sw: direction_sw,
se: direction_se,
south_custom: direction_south_custom
}),
directions = direction_callbacks.keys();
function direction_south_custom() {
var bbox = getScreenBBox();
return {
top: bbox.s.y,
left: bbox.s.x ,
};
}
function direction_n() {
var bbox = getScreenBBox();
return {
top: bbox.n.y - node.offsetHeight,
left: bbox.n.x - node.offsetWidth / 2
};
}
function direction_s() {
var bbox = getScreenBBox();
return {
top: bbox.s.y,
left: bbox.s.x - node.offsetWidth / 2
};
}
function direction_e() {
var bbox = getScreenBBox();
return {
top: bbox.e.y - node.offsetHeight / 2,
left: bbox.e.x
};
}
function direction_w() {
var bbox = getScreenBBox();
return {
top: bbox.w.y - node.offsetHeight / 2,
left: bbox.w.x - node.offsetWidth
};
}
function direction_nw() {
var bbox = getScreenBBox();
return {
top: bbox.nw.y - node.offsetHeight,
left: bbox.nw.x - node.offsetWidth
};
}
function direction_ne() {
var bbox = getScreenBBox();
return {
top: bbox.ne.y - node.offsetHeight,
left: bbox.ne.x
};
}
function direction_sw() {
var bbox = getScreenBBox();
return {
top: bbox.sw.y,
left: bbox.sw.x - node.offsetWidth
};
}
function direction_se() {
var bbox = getScreenBBox();
return {
top: bbox.se.y,
left: bbox.e.x
};
}
function initNode() {
var node = d3.select(document.createElement('div'));
node.style({
position: 'absolute',
opacity: 0,
pointerEvents: 'none',
boxSizing: 'border-box'
});
return node.node();
}
function getSVGNode(el) {
el = el.node();
if(el.tagName.toLowerCase() == 'svg'){
return el;
}
return el.ownerSVGElement;
}
// Private - gets the screen coordinates of a shape
//
// Given a shape on the screen, will return an SVGPoint for the directions
// n(north), s(south), e(east), w(west), ne(northeast), se(southeast), nw(northwest),
// sw(southwest).
//
// +-+-+
// | |
// + +
// | |
// +-+-+
//
// Returns an Object {n, s, e, w, nw, sw, ne, se}
function getScreenBBox() {
var targetel = target || d3.event.target;
var bbox = {};
var matrix = targetel.getScreenCTM();
var tbbox = targetel.getBBox();
var width = tbbox.width;
var height = tbbox.height;
var x = tbbox.x;
var y = tbbox.y;
var scrollTop = document.documentElement.scrollTop || document.body.scrollTop;
var scrollLeft = document.documentElement.scrollLeft || document.body.scrollLeft;
// Nick - prevents bugs with scrolling and zooming on the same object
matrix.a = 1;
matrix.d = 1;
// changing order of adding scrolling,
// original ordering was causing problems with pre-translated or rotated
// elements.
matrix.e = matrix.e + scrollLeft;
matrix.f = matrix.f + scrollTop;
point.x = x; //+ scrollLeft
point.y = y; //+ scrollTop
bbox.nw = point.matrixTransform(matrix);
point.x = point.x + width;
bbox.ne = point.matrixTransform(matrix);
point.y = point.y + height;
bbox.se = point.matrixTransform(matrix);
point.x = point.x - width;
bbox.sw = point.matrixTransform(matrix);
point.y = point.y - height / 2;
bbox.w = point.matrixTransform(matrix);
point.x = point.x + width;
bbox.e = point.matrixTransform(matrix);
point.x = point.x - width / 2;
point.y = point.y - height / 2;
bbox.n = point.matrixTransform(matrix);
point.y = point.y + height;
bbox.s = point.matrixTransform(matrix);
return bbox;
}
// only fade tips if you are still hovering on the current tip
function fade_tips(inst_selection){
var is_hovering = d3.select(inst_selection)
.classed('hovering');
if (is_hovering){
d3.selectAll('.d3-tip')
.transition()
.duration(250)
.style('opacity',0)
.style('display', 'none');
}
}
function isFunction(functionToCheck) {
var getType = {};
return functionToCheck && getType.toString.call(functionToCheck) === '[object Function]';
}
return tip;
};