+++ /dev/null
-/**
- * @license
- * Copyright 2012 Dan Vanderkam (danvdk@gmail.com)
- * MIT-licensed (http://opensource.org/licenses/MIT)
- */
-/*global Dygraph:false */
-
-Dygraph.Plugins.ChartLabels = (function() {
-
-"use strict";
-
-// TODO(danvk): move chart label options out of dygraphs and into the plugin.
-// TODO(danvk): only tear down & rebuild the DIVs when it's necessary.
-
-var chart_labels = function() {
- this.title_div_ = null;
- this.xlabel_div_ = null;
- this.ylabel_div_ = null;
- this.y2label_div_ = null;
-};
-
-chart_labels.prototype.toString = function() {
- return "ChartLabels Plugin";
-};
-
-chart_labels.prototype.activate = function(g) {
- return {
- layout: this.layout,
- // clearChart: this.clearChart,
- didDrawChart: this.didDrawChart
- };
-};
-
-// QUESTION: should there be a plugin-utils.js?
-var createDivInRect = function(r) {
- var div = document.createElement('div');
- div.style.position = 'absolute';
- div.style.left = r.x + 'px';
- div.style.top = r.y + 'px';
- div.style.width = r.w + 'px';
- div.style.height = r.h + 'px';
- return div;
-};
-
-// Detach and null out any existing nodes.
-chart_labels.prototype.detachLabels_ = function() {
- var els = [ this.title_div_,
- this.xlabel_div_,
- this.ylabel_div_,
- this.y2label_div_ ];
- for (var i = 0; i < els.length; i++) {
- var el = els[i];
- if (!el) continue;
- if (el.parentNode) el.parentNode.removeChild(el);
- }
-
- this.title_div_ = null;
- this.xlabel_div_ = null;
- this.ylabel_div_ = null;
- this.y2label_div_ = null;
-};
-
-var createRotatedDiv = function(g, box, axis, classes, html) {
- // TODO(danvk): is this outer div actually necessary?
- var div = document.createElement("div");
- div.style.position = 'absolute';
- if (axis == 1) {
- // NOTE: this is cheating. Should be positioned relative to the box.
- div.style.left = '0px';
- } else {
- div.style.left = box.x + 'px';
- }
- div.style.top = box.y + 'px';
- div.style.width = box.w + 'px';
- div.style.height = box.h + 'px';
- div.style.fontSize = (g.getOption('yLabelWidth') - 2) + 'px';
-
- var inner_div = document.createElement("div");
- inner_div.style.position = 'absolute';
- inner_div.style.width = box.h + 'px';
- inner_div.style.height = box.w + 'px';
- inner_div.style.top = (box.h / 2 - box.w / 2) + 'px';
- inner_div.style.left = (box.w / 2 - box.h / 2) + 'px';
- inner_div.style.textAlign = 'center';
-
- // CSS rotation is an HTML5 feature which is not standardized. Hence every
- // browser has its own name for the CSS style.
- var val = 'rotate(' + (axis == 1 ? '-' : '') + '90deg)';
- inner_div.style.transform = val; // HTML5
- inner_div.style.WebkitTransform = val; // Safari/Chrome
- inner_div.style.MozTransform = val; // Firefox
- inner_div.style.OTransform = val; // Opera
- inner_div.style.msTransform = val; // IE9
-
- var class_div = document.createElement("div");
- class_div.className = classes;
- class_div.innerHTML = html;
-
- inner_div.appendChild(class_div);
- div.appendChild(inner_div);
- return div;
-};
-
-chart_labels.prototype.layout = function(e) {
- this.detachLabels_();
-
- var g = e.dygraph;
- var div = e.chart_div;
- if (g.getOption('title')) {
- // QUESTION: should this return an absolutely-positioned div instead?
- var title_rect = e.reserveSpaceTop(g.getOption('titleHeight'));
- this.title_div_ = createDivInRect(title_rect);
- this.title_div_.style.textAlign = 'center';
- this.title_div_.style.fontSize = (g.getOption('titleHeight') - 8) + 'px';
- this.title_div_.style.fontWeight = 'bold';
- this.title_div_.style.zIndex = 10;
-
- var class_div = document.createElement("div");
- class_div.className = 'dygraph-label dygraph-title';
- class_div.innerHTML = g.getOption('title');
- this.title_div_.appendChild(class_div);
- div.appendChild(this.title_div_);
- }
-
- if (g.getOption('xlabel')) {
- var x_rect = e.reserveSpaceBottom(g.getOption('xLabelHeight'));
- this.xlabel_div_ = createDivInRect(x_rect);
- this.xlabel_div_.style.textAlign = 'center';
- this.xlabel_div_.style.fontSize = (g.getOption('xLabelHeight') - 2) + 'px';
-
- var class_div = document.createElement("div");
- class_div.className = 'dygraph-label dygraph-xlabel';
- class_div.innerHTML = g.getOption('xlabel');
- this.xlabel_div_.appendChild(class_div);
- div.appendChild(this.xlabel_div_);
- }
-
- if (g.getOption('ylabel')) {
- // It would make sense to shift the chart here to make room for the y-axis
- // label, but the default yAxisLabelWidth is large enough that this results
- // in overly-padded charts. The y-axis label should fit fine. If it
- // doesn't, the yAxisLabelWidth option can be increased.
- var y_rect = e.reserveSpaceLeft(0);
-
- this.ylabel_div_ = createRotatedDiv(
- g, y_rect,
- 1, // primary (left) y-axis
- 'dygraph-label dygraph-ylabel',
- g.getOption('ylabel'));
- div.appendChild(this.ylabel_div_);
- }
-
- if (g.getOption('y2label') && g.numAxes() == 2) {
- // same logic applies here as for ylabel.
- var y2_rect = e.reserveSpaceRight(0);
- this.y2label_div_ = createRotatedDiv(
- g, y2_rect,
- 2, // secondary (right) y-axis
- 'dygraph-label dygraph-y2label',
- g.getOption('y2label'));
- div.appendChild(this.y2label_div_);
- }
-};
-
-chart_labels.prototype.didDrawChart = function(e) {
- var g = e.dygraph;
- if (this.title_div_) {
- this.title_div_.children[0].innerHTML = g.getOption('title');
- }
- if (this.xlabel_div_) {
- this.xlabel_div_.children[0].innerHTML = g.getOption('xlabel');
- }
- if (this.ylabel_div_) {
- this.ylabel_div_.children[0].children[0].innerHTML = g.getOption('ylabel');
- }
- if (this.y2label_div_) {
- this.y2label_div_.children[0].children[0].innerHTML = g.getOption('y2label');
- }
-};
-
-chart_labels.prototype.clearChart = function() {
-};
-
-chart_labels.prototype.destroy = function() {
- this.detachLabels_();
-};
-
-
-return chart_labels;
-})();
projects / dygraphs.git / blobdiff