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568 lines
17 KiB
568 lines
17 KiB
// https://d3js.org/d3-brush/ Version 1.0.4. Copyright 2017 Mike Bostock.
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(function (global, factory) {
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typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('d3-dispatch'), require('d3-drag'), require('d3-interpolate'), require('d3-selection'), require('d3-transition')) :
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typeof define === 'function' && define.amd ? define(['exports', 'd3-dispatch', 'd3-drag', 'd3-interpolate', 'd3-selection', 'd3-transition'], factory) :
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(factory((global.d3 = global.d3 || {}),global.d3,global.d3,global.d3,global.d3,global.d3));
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}(this, (function (exports,d3Dispatch,d3Drag,d3Interpolate,d3Selection,d3Transition) { 'use strict';
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var constant = function(x) {
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return function() {
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return x;
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};
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};
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var BrushEvent = function(target, type, selection) {
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this.target = target;
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this.type = type;
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this.selection = selection;
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};
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function nopropagation() {
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d3Selection.event.stopImmediatePropagation();
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}
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var noevent = function() {
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d3Selection.event.preventDefault();
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d3Selection.event.stopImmediatePropagation();
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};
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var MODE_DRAG = {name: "drag"};
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var MODE_SPACE = {name: "space"};
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var MODE_HANDLE = {name: "handle"};
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var MODE_CENTER = {name: "center"};
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var X = {
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name: "x",
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handles: ["e", "w"].map(type),
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input: function(x, e) { return x && [[x[0], e[0][1]], [x[1], e[1][1]]]; },
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output: function(xy) { return xy && [xy[0][0], xy[1][0]]; }
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};
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var Y = {
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name: "y",
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handles: ["n", "s"].map(type),
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input: function(y, e) { return y && [[e[0][0], y[0]], [e[1][0], y[1]]]; },
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output: function(xy) { return xy && [xy[0][1], xy[1][1]]; }
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};
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var XY = {
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name: "xy",
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handles: ["n", "e", "s", "w", "nw", "ne", "se", "sw"].map(type),
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input: function(xy) { return xy; },
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output: function(xy) { return xy; }
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};
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var cursors = {
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overlay: "crosshair",
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selection: "move",
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n: "ns-resize",
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e: "ew-resize",
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s: "ns-resize",
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w: "ew-resize",
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nw: "nwse-resize",
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ne: "nesw-resize",
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se: "nwse-resize",
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sw: "nesw-resize"
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};
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var flipX = {
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e: "w",
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w: "e",
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nw: "ne",
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ne: "nw",
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se: "sw",
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sw: "se"
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};
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var flipY = {
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n: "s",
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s: "n",
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nw: "sw",
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ne: "se",
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se: "ne",
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sw: "nw"
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};
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var signsX = {
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overlay: +1,
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selection: +1,
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n: null,
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e: +1,
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s: null,
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w: -1,
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nw: -1,
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ne: +1,
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se: +1,
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sw: -1
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};
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var signsY = {
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overlay: +1,
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selection: +1,
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n: -1,
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e: null,
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s: +1,
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w: null,
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nw: -1,
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ne: -1,
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se: +1,
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sw: +1
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};
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function type(t) {
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return {type: t};
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}
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// Ignore right-click, since that should open the context menu.
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function defaultFilter() {
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return !d3Selection.event.button;
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}
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function defaultExtent() {
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var svg = this.ownerSVGElement || this;
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return [[0, 0], [svg.width.baseVal.value, svg.height.baseVal.value]];
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}
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// Like d3.local, but with the name “__brush” rather than auto-generated.
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function local(node) {
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while (!node.__brush) if (!(node = node.parentNode)) return;
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return node.__brush;
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}
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function empty(extent) {
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return extent[0][0] === extent[1][0]
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|| extent[0][1] === extent[1][1];
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}
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function brushSelection(node) {
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var state = node.__brush;
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return state ? state.dim.output(state.selection) : null;
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}
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function brushX() {
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return brush$1(X);
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}
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function brushY() {
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return brush$1(Y);
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}
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var brush = function() {
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return brush$1(XY);
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};
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function brush$1(dim) {
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var extent = defaultExtent,
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filter = defaultFilter,
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listeners = d3Dispatch.dispatch(brush, "start", "brush", "end"),
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handleSize = 6,
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touchending;
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function brush(group) {
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var overlay = group
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.property("__brush", initialize)
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.selectAll(".overlay")
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.data([type("overlay")]);
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overlay.enter().append("rect")
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.attr("class", "overlay")
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.attr("pointer-events", "all")
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.attr("cursor", cursors.overlay)
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.merge(overlay)
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.each(function() {
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var extent = local(this).extent;
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d3Selection.select(this)
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.attr("x", extent[0][0])
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.attr("y", extent[0][1])
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.attr("width", extent[1][0] - extent[0][0])
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.attr("height", extent[1][1] - extent[0][1]);
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});
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group.selectAll(".selection")
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.data([type("selection")])
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.enter().append("rect")
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.attr("class", "selection")
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.attr("cursor", cursors.selection)
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.attr("fill", "#777")
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.attr("fill-opacity", 0.3)
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.attr("stroke", "#fff")
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.attr("shape-rendering", "crispEdges");
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var handle = group.selectAll(".handle")
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.data(dim.handles, function(d) { return d.type; });
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handle.exit().remove();
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handle.enter().append("rect")
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.attr("class", function(d) { return "handle handle--" + d.type; })
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.attr("cursor", function(d) { return cursors[d.type]; });
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group
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.each(redraw)
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.attr("fill", "none")
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.attr("pointer-events", "all")
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.style("-webkit-tap-highlight-color", "rgba(0,0,0,0)")
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.on("mousedown.brush touchstart.brush", started);
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}
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brush.move = function(group, selection) {
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if (group.selection) {
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group
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.on("start.brush", function() { emitter(this, arguments).beforestart().start(); })
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.on("interrupt.brush end.brush", function() { emitter(this, arguments).end(); })
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.tween("brush", function() {
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var that = this,
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state = that.__brush,
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emit = emitter(that, arguments),
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selection0 = state.selection,
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selection1 = dim.input(typeof selection === "function" ? selection.apply(this, arguments) : selection, state.extent),
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i = d3Interpolate.interpolate(selection0, selection1);
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function tween(t) {
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state.selection = t === 1 && empty(selection1) ? null : i(t);
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redraw.call(that);
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emit.brush();
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}
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return selection0 && selection1 ? tween : tween(1);
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});
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} else {
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group
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.each(function() {
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var that = this,
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args = arguments,
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state = that.__brush,
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selection1 = dim.input(typeof selection === "function" ? selection.apply(that, args) : selection, state.extent),
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emit = emitter(that, args).beforestart();
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d3Transition.interrupt(that);
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state.selection = selection1 == null || empty(selection1) ? null : selection1;
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redraw.call(that);
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emit.start().brush().end();
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});
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}
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};
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function redraw() {
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var group = d3Selection.select(this),
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selection = local(this).selection;
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if (selection) {
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group.selectAll(".selection")
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.style("display", null)
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.attr("x", selection[0][0])
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.attr("y", selection[0][1])
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.attr("width", selection[1][0] - selection[0][0])
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.attr("height", selection[1][1] - selection[0][1]);
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group.selectAll(".handle")
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.style("display", null)
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.attr("x", function(d) { return d.type[d.type.length - 1] === "e" ? selection[1][0] - handleSize / 2 : selection[0][0] - handleSize / 2; })
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.attr("y", function(d) { return d.type[0] === "s" ? selection[1][1] - handleSize / 2 : selection[0][1] - handleSize / 2; })
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.attr("width", function(d) { return d.type === "n" || d.type === "s" ? selection[1][0] - selection[0][0] + handleSize : handleSize; })
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.attr("height", function(d) { return d.type === "e" || d.type === "w" ? selection[1][1] - selection[0][1] + handleSize : handleSize; });
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}
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else {
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group.selectAll(".selection,.handle")
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.style("display", "none")
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.attr("x", null)
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.attr("y", null)
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.attr("width", null)
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.attr("height", null);
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}
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}
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function emitter(that, args) {
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return that.__brush.emitter || new Emitter(that, args);
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}
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function Emitter(that, args) {
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this.that = that;
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this.args = args;
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this.state = that.__brush;
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this.active = 0;
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}
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Emitter.prototype = {
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beforestart: function() {
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if (++this.active === 1) this.state.emitter = this, this.starting = true;
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return this;
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},
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start: function() {
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if (this.starting) this.starting = false, this.emit("start");
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return this;
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},
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brush: function() {
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this.emit("brush");
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return this;
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},
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end: function() {
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if (--this.active === 0) delete this.state.emitter, this.emit("end");
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return this;
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},
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emit: function(type) {
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d3Selection.customEvent(new BrushEvent(brush, type, dim.output(this.state.selection)), listeners.apply, listeners, [type, this.that, this.args]);
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}
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};
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function started() {
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if (d3Selection.event.touches) { if (d3Selection.event.changedTouches.length < d3Selection.event.touches.length) return noevent(); }
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else if (touchending) return;
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if (!filter.apply(this, arguments)) return;
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var that = this,
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type = d3Selection.event.target.__data__.type,
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mode = (d3Selection.event.metaKey ? type = "overlay" : type) === "selection" ? MODE_DRAG : (d3Selection.event.altKey ? MODE_CENTER : MODE_HANDLE),
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signX = dim === Y ? null : signsX[type],
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signY = dim === X ? null : signsY[type],
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state = local(that),
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extent = state.extent,
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selection = state.selection,
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W = extent[0][0], w0, w1,
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N = extent[0][1], n0, n1,
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E = extent[1][0], e0, e1,
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S = extent[1][1], s0, s1,
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dx,
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dy,
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moving,
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shifting = signX && signY && d3Selection.event.shiftKey,
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lockX,
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lockY,
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point0 = d3Selection.mouse(that),
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point = point0,
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emit = emitter(that, arguments).beforestart();
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if (type === "overlay") {
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state.selection = selection = [
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[w0 = dim === Y ? W : point0[0], n0 = dim === X ? N : point0[1]],
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[e0 = dim === Y ? E : w0, s0 = dim === X ? S : n0]
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];
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} else {
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w0 = selection[0][0];
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n0 = selection[0][1];
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e0 = selection[1][0];
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s0 = selection[1][1];
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}
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w1 = w0;
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n1 = n0;
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e1 = e0;
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s1 = s0;
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var group = d3Selection.select(that)
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.attr("pointer-events", "none");
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var overlay = group.selectAll(".overlay")
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.attr("cursor", cursors[type]);
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if (d3Selection.event.touches) {
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group
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.on("touchmove.brush", moved, true)
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.on("touchend.brush touchcancel.brush", ended, true);
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} else {
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var view = d3Selection.select(d3Selection.event.view)
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.on("keydown.brush", keydowned, true)
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.on("keyup.brush", keyupped, true)
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.on("mousemove.brush", moved, true)
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.on("mouseup.brush", ended, true);
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d3Drag.dragDisable(d3Selection.event.view);
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}
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nopropagation();
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d3Transition.interrupt(that);
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redraw.call(that);
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emit.start();
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function moved() {
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var point1 = d3Selection.mouse(that);
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if (shifting && !lockX && !lockY) {
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if (Math.abs(point1[0] - point[0]) > Math.abs(point1[1] - point[1])) lockY = true;
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else lockX = true;
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}
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point = point1;
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moving = true;
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noevent();
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move();
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}
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function move() {
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var t;
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dx = point[0] - point0[0];
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dy = point[1] - point0[1];
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switch (mode) {
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case MODE_SPACE:
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case MODE_DRAG: {
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if (signX) dx = Math.max(W - w0, Math.min(E - e0, dx)), w1 = w0 + dx, e1 = e0 + dx;
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if (signY) dy = Math.max(N - n0, Math.min(S - s0, dy)), n1 = n0 + dy, s1 = s0 + dy;
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break;
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}
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case MODE_HANDLE: {
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if (signX < 0) dx = Math.max(W - w0, Math.min(E - w0, dx)), w1 = w0 + dx, e1 = e0;
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else if (signX > 0) dx = Math.max(W - e0, Math.min(E - e0, dx)), w1 = w0, e1 = e0 + dx;
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if (signY < 0) dy = Math.max(N - n0, Math.min(S - n0, dy)), n1 = n0 + dy, s1 = s0;
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else if (signY > 0) dy = Math.max(N - s0, Math.min(S - s0, dy)), n1 = n0, s1 = s0 + dy;
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break;
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}
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case MODE_CENTER: {
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if (signX) w1 = Math.max(W, Math.min(E, w0 - dx * signX)), e1 = Math.max(W, Math.min(E, e0 + dx * signX));
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if (signY) n1 = Math.max(N, Math.min(S, n0 - dy * signY)), s1 = Math.max(N, Math.min(S, s0 + dy * signY));
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break;
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}
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}
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if (e1 < w1) {
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signX *= -1;
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t = w0, w0 = e0, e0 = t;
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t = w1, w1 = e1, e1 = t;
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if (type in flipX) overlay.attr("cursor", cursors[type = flipX[type]]);
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}
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if (s1 < n1) {
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signY *= -1;
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t = n0, n0 = s0, s0 = t;
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t = n1, n1 = s1, s1 = t;
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if (type in flipY) overlay.attr("cursor", cursors[type = flipY[type]]);
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}
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if (state.selection) selection = state.selection; // May be set by brush.move!
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if (lockX) w1 = selection[0][0], e1 = selection[1][0];
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if (lockY) n1 = selection[0][1], s1 = selection[1][1];
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if (selection[0][0] !== w1
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|| selection[0][1] !== n1
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|| selection[1][0] !== e1
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|| selection[1][1] !== s1) {
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state.selection = [[w1, n1], [e1, s1]];
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redraw.call(that);
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emit.brush();
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}
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}
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function ended() {
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nopropagation();
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if (d3Selection.event.touches) {
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if (d3Selection.event.touches.length) return;
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if (touchending) clearTimeout(touchending);
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touchending = setTimeout(function() { touchending = null; }, 500); // Ghost clicks are delayed!
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group.on("touchmove.brush touchend.brush touchcancel.brush", null);
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} else {
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d3Drag.dragEnable(d3Selection.event.view, moving);
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view.on("keydown.brush keyup.brush mousemove.brush mouseup.brush", null);
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}
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group.attr("pointer-events", "all");
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overlay.attr("cursor", cursors.overlay);
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if (state.selection) selection = state.selection; // May be set by brush.move (on start)!
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if (empty(selection)) state.selection = null, redraw.call(that);
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emit.end();
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}
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function keydowned() {
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switch (d3Selection.event.keyCode) {
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case 16: { // SHIFT
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shifting = signX && signY;
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break;
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}
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case 18: { // ALT
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if (mode === MODE_HANDLE) {
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if (signX) e0 = e1 - dx * signX, w0 = w1 + dx * signX;
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if (signY) s0 = s1 - dy * signY, n0 = n1 + dy * signY;
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mode = MODE_CENTER;
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move();
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}
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break;
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}
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case 32: { // SPACE; takes priority over ALT
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if (mode === MODE_HANDLE || mode === MODE_CENTER) {
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if (signX < 0) e0 = e1 - dx; else if (signX > 0) w0 = w1 - dx;
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if (signY < 0) s0 = s1 - dy; else if (signY > 0) n0 = n1 - dy;
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mode = MODE_SPACE;
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overlay.attr("cursor", cursors.selection);
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move();
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}
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break;
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}
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default: return;
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}
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noevent();
|
|
}
|
|
|
|
function keyupped() {
|
|
switch (d3Selection.event.keyCode) {
|
|
case 16: { // SHIFT
|
|
if (shifting) {
|
|
lockX = lockY = shifting = false;
|
|
move();
|
|
}
|
|
break;
|
|
}
|
|
case 18: { // ALT
|
|
if (mode === MODE_CENTER) {
|
|
if (signX < 0) e0 = e1; else if (signX > 0) w0 = w1;
|
|
if (signY < 0) s0 = s1; else if (signY > 0) n0 = n1;
|
|
mode = MODE_HANDLE;
|
|
move();
|
|
}
|
|
break;
|
|
}
|
|
case 32: { // SPACE
|
|
if (mode === MODE_SPACE) {
|
|
if (d3Selection.event.altKey) {
|
|
if (signX) e0 = e1 - dx * signX, w0 = w1 + dx * signX;
|
|
if (signY) s0 = s1 - dy * signY, n0 = n1 + dy * signY;
|
|
mode = MODE_CENTER;
|
|
} else {
|
|
if (signX < 0) e0 = e1; else if (signX > 0) w0 = w1;
|
|
if (signY < 0) s0 = s1; else if (signY > 0) n0 = n1;
|
|
mode = MODE_HANDLE;
|
|
}
|
|
overlay.attr("cursor", cursors[type]);
|
|
move();
|
|
}
|
|
break;
|
|
}
|
|
default: return;
|
|
}
|
|
noevent();
|
|
}
|
|
}
|
|
|
|
function initialize() {
|
|
var state = this.__brush || {selection: null};
|
|
state.extent = extent.apply(this, arguments);
|
|
state.dim = dim;
|
|
return state;
|
|
}
|
|
|
|
brush.extent = function(_) {
|
|
return arguments.length ? (extent = typeof _ === "function" ? _ : constant([[+_[0][0], +_[0][1]], [+_[1][0], +_[1][1]]]), brush) : extent;
|
|
};
|
|
|
|
brush.filter = function(_) {
|
|
return arguments.length ? (filter = typeof _ === "function" ? _ : constant(!!_), brush) : filter;
|
|
};
|
|
|
|
brush.handleSize = function(_) {
|
|
return arguments.length ? (handleSize = +_, brush) : handleSize;
|
|
};
|
|
|
|
brush.on = function() {
|
|
var value = listeners.on.apply(listeners, arguments);
|
|
return value === listeners ? brush : value;
|
|
};
|
|
|
|
return brush;
|
|
}
|
|
|
|
exports.brush = brush;
|
|
exports.brushX = brushX;
|
|
exports.brushY = brushY;
|
|
exports.brushSelection = brushSelection;
|
|
|
|
Object.defineProperty(exports, '__esModule', { value: true });
|
|
|
|
})));
|