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354 lines
12 KiB
354 lines
12 KiB
/**
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* Created by Alex on 5/6/14.
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*/
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var UNGROUPED = '__ungrouped__'; // reserved group id for ungrouped items
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/**
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* An ItemSet holds a set of items and ranges which can be displayed in a
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* range. The width is determined by the parent of the ItemSet, and the height
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* is determined by the size of the items.
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* @param {Panel} backgroundPanel Panel which can be used to display the
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* vertical lines of box items.
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* @param {Panel} axisPanel Panel on the axis where the dots of box-items
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* can be displayed.
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* @param {Panel} sidePanel Left side panel holding labels
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* @param {Object} [options] See ItemSet.setOptions for the available options.
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* @constructor ItemSet
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* @extends Panel
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*/
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function Linegraph(backgroundPanel, axisPanel, sidePanel, options, timeline, sidePanelParent) {
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this.id = util.randomUUID();
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this.timeline = timeline;
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// one options object is shared by this itemset and all its items
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this.options = options || {};
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this.backgroundPanel = backgroundPanel;
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this.axisPanel = axisPanel;
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this.sidePanel = sidePanel;
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this.sidePanelParent = sidePanelParent;
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this.itemOptions = Object.create(this.options);
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this.dom = {};
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this.hammer = null;
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this.itemsData = null; // DataSet
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this.groupsData = null; // DataSet
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this.range = null; // Range or Object {start: number, end: number}
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// listeners for the DataSet of the items
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// this.itemListeners = {
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// 'add': function(event, params, senderId) {
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// if (senderId != me.id) me._onAdd(params.items);
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// },
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// 'update': function(event, params, senderId) {
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// if (senderId != me.id) me._onUpdate(params.items);
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// },
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// 'remove': function(event, params, senderId) {
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// if (senderId != me.id) me._onRemove(params.items);
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// }
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// };
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//
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// // listeners for the DataSet of the groups
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// this.groupListeners = {
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// 'add': function(event, params, senderId) {
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// if (senderId != me.id) me._onAddGroups(params.items);
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// },
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// 'update': function(event, params, senderId) {
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// if (senderId != me.id) me._onUpdateGroups(params.items);
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// },
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// 'remove': function(event, params, senderId) {
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// if (senderId != me.id) me._onRemoveGroups(params.items);
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// }
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// };
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this.items = {}; // object with an Item for every data item
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this.groups = {}; // Group object for every group
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this.groupIds = [];
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this.selection = []; // list with the ids of all selected nodes
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this.stackDirty = true; // if true, all items will be restacked on next repaint
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this.touchParams = {}; // stores properties while dragging
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// create the HTML DOM
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this.lastStart = 0;
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this._create();
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var me = this;
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this.timeline.on("rangechange", function() {
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if (me.lastStart != 0) {
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var offset = me.range.start - me.lastStart;
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var range = me.range.end - me.range.start;
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if (me.width != 0) {
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var rangePerPixelInv = me.width/range;
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var xOffset = offset * rangePerPixelInv;
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me.svg.style.left = util.option.asSize(-me.width - xOffset);
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}
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}
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})
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this.timeline.on("rangechanged", function() {
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me.lastStart = me.range.start;
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me.svg.style.left = util.option.asSize(-me.width);
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me.setData.apply(me);
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});
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}
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Linegraph.prototype = new Panel();
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/**
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* Create the HTML DOM for the ItemSet
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*/
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Linegraph.prototype._create = function(){
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var frame = document.createElement('div');
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frame['timeline-linegraph'] = this;
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this.frame = frame;
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this.frame.className = 'itemset';
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// create background panel
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var background = document.createElement('div');
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background.className = 'background';
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this.backgroundPanel.frame.appendChild(background);
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this.dom.background = background;
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// create foreground panel
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var foreground = document.createElement('div');
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foreground.className = 'foreground';
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frame.appendChild(foreground);
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this.dom.foreground = foreground;
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// // create axis panel
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// var axis = document.createElement('div');
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// axis.className = 'axis';
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// this.dom.axis = axis;
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// this.axisPanel.frame.appendChild(axis);
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//
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// // create labelset
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// var labelSet = document.createElement('div');
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// labelSet.className = 'labelset';
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// this.dom.labelSet = labelSet;
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// this.sidePanel.frame.appendChild(labelSet);
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this.svg = document.createElementNS('http://www.w3.org/2000/svg',"svg");
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this.svg.style.position = "relative"
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this.svg.style.height = "300px";
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this.path = document.createElementNS('http://www.w3.org/2000/svg',"path");
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this.path.setAttributeNS(null, "fill","none");
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this.path.setAttributeNS(null, "stroke","blue");
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this.path.setAttributeNS(null, "stroke-width","1");
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this.path2 = document.createElementNS('http://www.w3.org/2000/svg',"path");
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this.path2.setAttributeNS(null, "fill","none");
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this.path2.setAttributeNS(null, "stroke","red");
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this.path2.setAttributeNS(null, "stroke-width","2");
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this.dom.foreground.appendChild(this.svg);
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this.svg.appendChild(this.path2);
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this.svg.appendChild(this.path);
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// this.yAxisDiv = document.createElement('div');
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// this.yAxisDiv.style.backgroundColor = 'rgb(220,220,220)';
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// this.yAxisDiv.style.width = '100px';
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// this.yAxisDiv.style.height = this.svg.style.height;
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this._createAxis();
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// this.dom.yAxisDiv = this.yAxisDiv;
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// this.sidePanel.frame.appendChild(this.yAxisDiv);
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this.sidePanel.showPanel.apply(this.sidePanel);
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this.sidePanelParent.showPanel();
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};
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Linegraph.prototype._createAxis = function() {
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// panel with time axis
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var dataAxisOptions = {
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range: this.range,
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left: null,
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top: null,
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width: null,
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height: 300,
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svg: this.svg
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};
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this.yAxis = new DataAxis(dataAxisOptions);
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this.yAxis.setRange({start:-60,end:260});
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this.sidePanel.frame.appendChild(this.yAxis.getFrame());
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}
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Linegraph.prototype.setData = function() {
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var data = [];
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this.yAxis.repaint();
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this.startTime = this.range.start;
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var min = Date.now() - 3600000 * 24 * 30;
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var max = Date.now() + 3600000 * 24 * 10;
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var count = 60;
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var step = (max-min) / count;
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var range = this.range.end - this.range.start;
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if (this.width != 0) {
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var rangePerPixel = range/this.width;
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var rangePerPixelInv = this.width/range;
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var xOffset = -this.range.start + this.width*rangePerPixel;
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for (var i = 0; i < count; i++) {
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data.push({x:(min + i*step + xOffset) * rangePerPixelInv, y: 250*(i%2) + 25})
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}
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// catmull rom
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var p0, p1, p2, p3, bp1, bp2, bp3;
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var d2 = "M" + data[0].x + "," + data[0].y + " ";
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for (var i = 0; i < data.length - 2; i++) {
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if (i == 0) {
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p0 = data[0]
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}
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else {
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p0 = data[i-1];
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}
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p1 = data[i];
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p2 = data[i+1];
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p3 = data[i+2];
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// Catmull-Rom to Cubic Bezier conversion matrix
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// 0 1 0 0
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// -1/6 1 1/6 0
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// 0 1/6 1 -1/6
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// 0 0 1 0
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// bp0 = { x: p1.x, y: p1.y };
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bp1 = { x: ((-p0.x + 6*p1.x + p2.x) / 6), y: ((-p0.y + 6*p1.y + p2.y) / 6)};
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bp2 = { x: ((p1.x + 6*p2.x - p3.x) / 6), y: ((p1.y + 6*p2.y - p3.y) / 6)};
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bp3 = { x: p2.x, y: p2.y };
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d2 += "C" + bp1.x + "," + bp1.y + " " + bp2.x + "," + bp2.y + " " + bp3.x + "," + bp3.y + " ";
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}
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// linear
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var d = "";
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for (var i = 0; i < data.length - 1; i++) {
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if (i == 0) {
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d += "M" + data[i].x + "," + data[i].y;
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}
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else {
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d += " " + data[i].x + "," + data[i].y;
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}
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}
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this.path.setAttributeNS(null, "d",d);
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this.path2.setAttributeNS(null, "d",d2);
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}
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}
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/**
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* Set options for the Linegraph. Existing options will be extended/overwritten.
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* @param {Object} [options] The following options are available:
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* {String | function} [className]
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* class name for the itemset
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* {String} [type]
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* Default type for the items. Choose from 'box'
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* (default), 'point', or 'range'. The default
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* Style can be overwritten by individual items.
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* {String} align
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* Alignment for the items, only applicable for
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* ItemBox. Choose 'center' (default), 'left', or
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* 'right'.
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* {String} orientation
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* Orientation of the item set. Choose 'top' or
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* 'bottom' (default).
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* {Number} margin.axis
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* Margin between the axis and the items in pixels.
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* Default is 20.
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* {Number} margin.item
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* Margin between items in pixels. Default is 10.
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* {Number} padding
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* Padding of the contents of an item in pixels.
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* Must correspond with the items css. Default is 5.
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* {Function} snap
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* Function to let items snap to nice dates when
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* dragging items.
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*/
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Linegraph.prototype.setOptions = function(options) {
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Component.prototype.setOptions.call(this, options);
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};
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/**
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* Set range (start and end).
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* @param {Range | Object} range A Range or an object containing start and end.
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*/
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Linegraph.prototype.setRange = function(range) {
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if (!(range instanceof Range) && (!range || !range.start || !range.end)) {
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throw new TypeError('Range must be an instance of Range, ' +
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'or an object containing start and end.');
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}
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this.range = range;
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};
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Linegraph.prototype.repaint = function() {
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var margin = this.options.margin,
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range = this.range,
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asSize = util.option.asSize,
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asString = util.option.asString,
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options = this.options,
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orientation = this.getOption('orientation'),
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resized = false,
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frame = this.frame;
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// TODO: document this feature to specify one margin for both item and axis distance
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if (typeof margin === 'number') {
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margin = {
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item: margin,
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axis: margin
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};
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}
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// update className
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this.frame.className = 'itemset' + (options.className ? (' ' + asString(options.className)) : '');
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// check whether zoomed (in that case we need to re-stack everything)
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// TODO: would be nicer to get this as a trigger from Range
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var visibleInterval = this.range.end - this.range.start;
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var zoomed = (visibleInterval != this.lastVisibleInterval) || (this.width != this.lastWidth);
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if (zoomed) this.stackDirty = true;
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this.lastVisibleInterval = visibleInterval;
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this.lastWidth = this.width;
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// reposition frame
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this.frame.style.left = asSize(options.left, '');
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this.frame.style.right = asSize(options.right, '');
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this.frame.style.top = asSize((orientation == 'top') ? '0' : '');
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this.frame.style.bottom = asSize((orientation == 'top') ? '' : '0');
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this.frame.style.width = asSize(options.width, '100%');
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// frame.style.height = asSize(height);
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//frame.style.height = asSize('height' in options ? options.height : height); // TODO: reckon with height
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// calculate actual size and position
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this.top = this.frame.offsetTop;
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this.left = this.frame.offsetLeft;
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this.width = this.frame.offsetWidth;
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// this.height = height;
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// check if this component is resized
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resized = this._isResized() || resized;
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if (resized) {
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this.svg.style.width = asSize(3*this.width);
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this.svg.style.left = asSize(-this.width);
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}
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if (zoomed) {
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this.setData();
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}
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}
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