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home/emeraadmin/public_html/node_modules/d3-zoom/dist/d3-zoom.js 0000644 00000041446 15170144217 0020651 0 ustar 00 // https://d3js.org/d3-zoom/ v1.7.3 Copyright 2018 Mike Bostock
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('d3-selection'), require('d3-dispatch'), require('d3-drag'), require('d3-interpolate'), require('d3-transition')) :
typeof define === 'function' && define.amd ? define(['exports', 'd3-selection', 'd3-dispatch', 'd3-drag', 'd3-interpolate', 'd3-transition'], factory) :
(factory((global.d3 = global.d3 || {}),global.d3,global.d3,global.d3,global.d3,global.d3));
}(this, (function (exports,d3Selection,d3Dispatch,d3Drag,d3Interpolate,d3Transition) { 'use strict';
function constant(x) {
return function() {
return x;
};
}
function ZoomEvent(target, type, transform) {
this.target = target;
this.type = type;
this.transform = transform;
}
function Transform(k, x, y) {
this.k = k;
this.x = x;
this.y = y;
}
Transform.prototype = {
constructor: Transform,
scale: function(k) {
return k === 1 ? this : new Transform(this.k * k, this.x, this.y);
},
translate: function(x, y) {
return x === 0 & y === 0 ? this : new Transform(this.k, this.x + this.k * x, this.y + this.k * y);
},
apply: function(point) {
return [point[0] * this.k + this.x, point[1] * this.k + this.y];
},
applyX: function(x) {
return x * this.k + this.x;
},
applyY: function(y) {
return y * this.k + this.y;
},
invert: function(location) {
return [(location[0] - this.x) / this.k, (location[1] - this.y) / this.k];
},
invertX: function(x) {
return (x - this.x) / this.k;
},
invertY: function(y) {
return (y - this.y) / this.k;
},
rescaleX: function(x) {
return x.copy().domain(x.range().map(this.invertX, this).map(x.invert, x));
},
rescaleY: function(y) {
return y.copy().domain(y.range().map(this.invertY, this).map(y.invert, y));
},
toString: function() {
return "translate(" + this.x + "," + this.y + ") scale(" + this.k + ")";
}
};
var identity = new Transform(1, 0, 0);
transform.prototype = Transform.prototype;
function transform(node) {
return node.__zoom || identity;
}
function nopropagation() {
d3Selection.event.stopImmediatePropagation();
}
function noevent() {
d3Selection.event.preventDefault();
d3Selection.event.stopImmediatePropagation();
}
// Ignore right-click, since that should open the context menu.
function defaultFilter() {
return !d3Selection.event.button;
}
function defaultExtent() {
var e = this, w, h;
if (e instanceof SVGElement) {
e = e.ownerSVGElement || e;
w = e.width.baseVal.value;
h = e.height.baseVal.value;
} else {
w = e.clientWidth;
h = e.clientHeight;
}
return [[0, 0], [w, h]];
}
function defaultTransform() {
return this.__zoom || identity;
}
function defaultWheelDelta() {
return -d3Selection.event.deltaY * (d3Selection.event.deltaMode ? 120 : 1) / 500;
}
function defaultTouchable() {
return "ontouchstart" in this;
}
function defaultConstrain(transform$$1, extent, translateExtent) {
var dx0 = transform$$1.invertX(extent[0][0]) - translateExtent[0][0],
dx1 = transform$$1.invertX(extent[1][0]) - translateExtent[1][0],
dy0 = transform$$1.invertY(extent[0][1]) - translateExtent[0][1],
dy1 = transform$$1.invertY(extent[1][1]) - translateExtent[1][1];
return transform$$1.translate(
dx1 > dx0 ? (dx0 + dx1) / 2 : Math.min(0, dx0) || Math.max(0, dx1),
dy1 > dy0 ? (dy0 + dy1) / 2 : Math.min(0, dy0) || Math.max(0, dy1)
);
}
function zoom() {
var filter = defaultFilter,
extent = defaultExtent,
constrain = defaultConstrain,
wheelDelta = defaultWheelDelta,
touchable = defaultTouchable,
scaleExtent = [0, Infinity],
translateExtent = [[-Infinity, -Infinity], [Infinity, Infinity]],
duration = 250,
interpolate = d3Interpolate.interpolateZoom,
gestures = [],
listeners = d3Dispatch.dispatch("start", "zoom", "end"),
touchstarting,
touchending,
touchDelay = 500,
wheelDelay = 150,
clickDistance2 = 0;
function zoom(selection) {
selection
.property("__zoom", defaultTransform)
.on("wheel.zoom", wheeled)
.on("mousedown.zoom", mousedowned)
.on("dblclick.zoom", dblclicked)
.filter(touchable)
.on("touchstart.zoom", touchstarted)
.on("touchmove.zoom", touchmoved)
.on("touchend.zoom touchcancel.zoom", touchended)
.style("touch-action", "none")
.style("-webkit-tap-highlight-color", "rgba(0,0,0,0)");
}
zoom.transform = function(collection, transform$$1) {
var selection = collection.selection ? collection.selection() : collection;
selection.property("__zoom", defaultTransform);
if (collection !== selection) {
schedule(collection, transform$$1);
} else {
selection.interrupt().each(function() {
gesture(this, arguments)
.start()
.zoom(null, typeof transform$$1 === "function" ? transform$$1.apply(this, arguments) : transform$$1)
.end();
});
}
};
zoom.scaleBy = function(selection, k) {
zoom.scaleTo(selection, function() {
var k0 = this.__zoom.k,
k1 = typeof k === "function" ? k.apply(this, arguments) : k;
return k0 * k1;
});
};
zoom.scaleTo = function(selection, k) {
zoom.transform(selection, function() {
var e = extent.apply(this, arguments),
t0 = this.__zoom,
p0 = centroid(e),
p1 = t0.invert(p0),
k1 = typeof k === "function" ? k.apply(this, arguments) : k;
return constrain(translate(scale(t0, k1), p0, p1), e, translateExtent);
});
};
zoom.translateBy = function(selection, x, y) {
zoom.transform(selection, function() {
return constrain(this.__zoom.translate(
typeof x === "function" ? x.apply(this, arguments) : x,
typeof y === "function" ? y.apply(this, arguments) : y
), extent.apply(this, arguments), translateExtent);
});
};
zoom.translateTo = function(selection, x, y) {
zoom.transform(selection, function() {
var e = extent.apply(this, arguments),
t = this.__zoom,
p = centroid(e);
return constrain(identity.translate(p[0], p[1]).scale(t.k).translate(
typeof x === "function" ? -x.apply(this, arguments) : -x,
typeof y === "function" ? -y.apply(this, arguments) : -y
), e, translateExtent);
});
};
function scale(transform$$1, k) {
k = Math.max(scaleExtent[0], Math.min(scaleExtent[1], k));
return k === transform$$1.k ? transform$$1 : new Transform(k, transform$$1.x, transform$$1.y);
}
function translate(transform$$1, p0, p1) {
var x = p0[0] - p1[0] * transform$$1.k, y = p0[1] - p1[1] * transform$$1.k;
return x === transform$$1.x && y === transform$$1.y ? transform$$1 : new Transform(transform$$1.k, x, y);
}
function centroid(extent) {
return [(+extent[0][0] + +extent[1][0]) / 2, (+extent[0][1] + +extent[1][1]) / 2];
}
function schedule(transition, transform$$1, center) {
transition
.on("start.zoom", function() { gesture(this, arguments).start(); })
.on("interrupt.zoom end.zoom", function() { gesture(this, arguments).end(); })
.tween("zoom", function() {
var that = this,
args = arguments,
g = gesture(that, args),
e = extent.apply(that, args),
p = center || centroid(e),
w = Math.max(e[1][0] - e[0][0], e[1][1] - e[0][1]),
a = that.__zoom,
b = typeof transform$$1 === "function" ? transform$$1.apply(that, args) : transform$$1,
i = interpolate(a.invert(p).concat(w / a.k), b.invert(p).concat(w / b.k));
return function(t) {
if (t === 1) t = b; // Avoid rounding error on end.
else { var l = i(t), k = w / l[2]; t = new Transform(k, p[0] - l[0] * k, p[1] - l[1] * k); }
g.zoom(null, t);
};
});
}
function gesture(that, args) {
for (var i = 0, n = gestures.length, g; i < n; ++i) {
if ((g = gestures[i]).that === that) {
return g;
}
}
return new Gesture(that, args);
}
function Gesture(that, args) {
this.that = that;
this.args = args;
this.index = -1;
this.active = 0;
this.extent = extent.apply(that, args);
}
Gesture.prototype = {
start: function() {
if (++this.active === 1) {
this.index = gestures.push(this) - 1;
this.emit("start");
}
return this;
},
zoom: function(key, transform$$1) {
if (this.mouse && key !== "mouse") this.mouse[1] = transform$$1.invert(this.mouse[0]);
if (this.touch0 && key !== "touch") this.touch0[1] = transform$$1.invert(this.touch0[0]);
if (this.touch1 && key !== "touch") this.touch1[1] = transform$$1.invert(this.touch1[0]);
this.that.__zoom = transform$$1;
this.emit("zoom");
return this;
},
end: function() {
if (--this.active === 0) {
gestures.splice(this.index, 1);
this.index = -1;
this.emit("end");
}
return this;
},
emit: function(type) {
d3Selection.customEvent(new ZoomEvent(zoom, type, this.that.__zoom), listeners.apply, listeners, [type, this.that, this.args]);
}
};
function wheeled() {
if (!filter.apply(this, arguments)) return;
var g = gesture(this, arguments),
t = this.__zoom,
k = Math.max(scaleExtent[0], Math.min(scaleExtent[1], t.k * Math.pow(2, wheelDelta.apply(this, arguments)))),
p = d3Selection.mouse(this);
// If the mouse is in the same location as before, reuse it.
// If there were recent wheel events, reset the wheel idle timeout.
if (g.wheel) {
if (g.mouse[0][0] !== p[0] || g.mouse[0][1] !== p[1]) {
g.mouse[1] = t.invert(g.mouse[0] = p);
}
clearTimeout(g.wheel);
}
// If this wheel event won’t trigger a transform change, ignore it.
else if (t.k === k) return;
// Otherwise, capture the mouse point and location at the start.
else {
g.mouse = [p, t.invert(p)];
d3Transition.interrupt(this);
g.start();
}
noevent();
g.wheel = setTimeout(wheelidled, wheelDelay);
g.zoom("mouse", constrain(translate(scale(t, k), g.mouse[0], g.mouse[1]), g.extent, translateExtent));
function wheelidled() {
g.wheel = null;
g.end();
}
}
function mousedowned() {
if (touchending || !filter.apply(this, arguments)) return;
var g = gesture(this, arguments),
v = d3Selection.select(d3Selection.event.view).on("mousemove.zoom", mousemoved, true).on("mouseup.zoom", mouseupped, true),
p = d3Selection.mouse(this),
x0 = d3Selection.event.clientX,
y0 = d3Selection.event.clientY;
d3Drag.dragDisable(d3Selection.event.view);
nopropagation();
g.mouse = [p, this.__zoom.invert(p)];
d3Transition.interrupt(this);
g.start();
function mousemoved() {
noevent();
if (!g.moved) {
var dx = d3Selection.event.clientX - x0, dy = d3Selection.event.clientY - y0;
g.moved = dx * dx + dy * dy > clickDistance2;
}
g.zoom("mouse", constrain(translate(g.that.__zoom, g.mouse[0] = d3Selection.mouse(g.that), g.mouse[1]), g.extent, translateExtent));
}
function mouseupped() {
v.on("mousemove.zoom mouseup.zoom", null);
d3Drag.dragEnable(d3Selection.event.view, g.moved);
noevent();
g.end();
}
}
function dblclicked() {
if (!filter.apply(this, arguments)) return;
var t0 = this.__zoom,
p0 = d3Selection.mouse(this),
p1 = t0.invert(p0),
k1 = t0.k * (d3Selection.event.shiftKey ? 0.5 : 2),
t1 = constrain(translate(scale(t0, k1), p0, p1), extent.apply(this, arguments), translateExtent);
noevent();
if (duration > 0) d3Selection.select(this).transition().duration(duration).call(schedule, t1, p0);
else d3Selection.select(this).call(zoom.transform, t1);
}
function touchstarted() {
if (!filter.apply(this, arguments)) return;
var g = gesture(this, arguments),
touches = d3Selection.event.changedTouches,
started,
n = touches.length, i, t, p;
nopropagation();
for (i = 0; i < n; ++i) {
t = touches[i], p = d3Selection.touch(this, touches, t.identifier);
p = [p, this.__zoom.invert(p), t.identifier];
if (!g.touch0) g.touch0 = p, started = true;
else if (!g.touch1) g.touch1 = p;
}
// If this is a dbltap, reroute to the (optional) dblclick.zoom handler.
if (touchstarting) {
touchstarting = clearTimeout(touchstarting);
if (!g.touch1) {
g.end();
p = d3Selection.select(this).on("dblclick.zoom");
if (p) p.apply(this, arguments);
return;
}
}
if (started) {
touchstarting = setTimeout(function() { touchstarting = null; }, touchDelay);
d3Transition.interrupt(this);
g.start();
}
}
function touchmoved() {
var g = gesture(this, arguments),
touches = d3Selection.event.changedTouches,
n = touches.length, i, t, p, l;
noevent();
if (touchstarting) touchstarting = clearTimeout(touchstarting);
for (i = 0; i < n; ++i) {
t = touches[i], p = d3Selection.touch(this, touches, t.identifier);
if (g.touch0 && g.touch0[2] === t.identifier) g.touch0[0] = p;
else if (g.touch1 && g.touch1[2] === t.identifier) g.touch1[0] = p;
}
t = g.that.__zoom;
if (g.touch1) {
var p0 = g.touch0[0], l0 = g.touch0[1],
p1 = g.touch1[0], l1 = g.touch1[1],
dp = (dp = p1[0] - p0[0]) * dp + (dp = p1[1] - p0[1]) * dp,
dl = (dl = l1[0] - l0[0]) * dl + (dl = l1[1] - l0[1]) * dl;
t = scale(t, Math.sqrt(dp / dl));
p = [(p0[0] + p1[0]) / 2, (p0[1] + p1[1]) / 2];
l = [(l0[0] + l1[0]) / 2, (l0[1] + l1[1]) / 2];
}
else if (g.touch0) p = g.touch0[0], l = g.touch0[1];
else return;
g.zoom("touch", constrain(translate(t, p, l), g.extent, translateExtent));
}
function touchended() {
var g = gesture(this, arguments),
touches = d3Selection.event.changedTouches,
n = touches.length, i, t;
nopropagation();
if (touchending) clearTimeout(touchending);
touchending = setTimeout(function() { touchending = null; }, touchDelay);
for (i = 0; i < n; ++i) {
t = touches[i];
if (g.touch0 && g.touch0[2] === t.identifier) delete g.touch0;
else if (g.touch1 && g.touch1[2] === t.identifier) delete g.touch1;
}
if (g.touch1 && !g.touch0) g.touch0 = g.touch1, delete g.touch1;
if (g.touch0) g.touch0[1] = this.__zoom.invert(g.touch0[0]);
else g.end();
}
zoom.wheelDelta = function(_) {
return arguments.length ? (wheelDelta = typeof _ === "function" ? _ : constant(+_), zoom) : wheelDelta;
};
zoom.filter = function(_) {
return arguments.length ? (filter = typeof _ === "function" ? _ : constant(!!_), zoom) : filter;
};
zoom.touchable = function(_) {
return arguments.length ? (touchable = typeof _ === "function" ? _ : constant(!!_), zoom) : touchable;
};
zoom.extent = function(_) {
return arguments.length ? (extent = typeof _ === "function" ? _ : constant([[+_[0][0], +_[0][1]], [+_[1][0], +_[1][1]]]), zoom) : extent;
};
zoom.scaleExtent = function(_) {
return arguments.length ? (scaleExtent[0] = +_[0], scaleExtent[1] = +_[1], zoom) : [scaleExtent[0], scaleExtent[1]];
};
zoom.translateExtent = function(_) {
return arguments.length ? (translateExtent[0][0] = +_[0][0], translateExtent[1][0] = +_[1][0], translateExtent[0][1] = +_[0][1], translateExtent[1][1] = +_[1][1], zoom) : [[translateExtent[0][0], translateExtent[0][1]], [translateExtent[1][0], translateExtent[1][1]]];
};
zoom.constrain = function(_) {
return arguments.length ? (constrain = _, zoom) : constrain;
};
zoom.duration = function(_) {
return arguments.length ? (duration = +_, zoom) : duration;
};
zoom.interpolate = function(_) {
return arguments.length ? (interpolate = _, zoom) : interpolate;
};
zoom.on = function() {
var value = listeners.on.apply(listeners, arguments);
return value === listeners ? zoom : value;
};
zoom.clickDistance = function(_) {
return arguments.length ? (clickDistance2 = (_ = +_) * _, zoom) : Math.sqrt(clickDistance2);
};
return zoom;
}
exports.zoom = zoom;
exports.zoomTransform = transform;
exports.zoomIdentity = identity;
Object.defineProperty(exports, '__esModule', { value: true });
})));