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efrain |
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<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Library draw chart function.
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* @package mod_questionnaire
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* @copyright 2016 Mike Churchward (mike.churchward@poetgroup.org)
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* @author Mike Churchward
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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/**
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* This is the function.
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* @param string $feedbacktype
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* @param array $labels
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* @param string $groupname
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* @param bool $allresponses
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* @param null|string $charttype
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* @param null|array $score
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* @param null|array $allscore
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* @param null|string $globallabel
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* @return string
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*/
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function draw_chart($feedbacktype, $labels, $groupname,
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$allresponses, $charttype=null, $score=null, $allscore=null, $globallabel=null) {
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global $PAGE;
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$pageoutput = '';
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if ($allresponses) {
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$nbvalues = count($allscore);
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} else {
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$nbvalues = count($score);
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}
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$nblabels = count($labels);
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$charttitlefont = "Verdana";
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$charttitlesize = 10;
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$charttitlesize2 = 10;
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if ($PAGE->pagetype == 'mod-questionnaire-myreport') {
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$charttitle = get_string('yourresponse', 'questionnaire');
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} else {
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$charttitle = get_string('thisresponse', 'questionnaire');
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}
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$charttitle2 = $groupname;
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// Gradient colors if needed.
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// TODO make gradient colors customizable in the settings.
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$chartcolorsgradient = "['Gradient(white:blue)', 'Gradient(white:red)', 'Gradient(white:green)', 'Gradient(white:pink)',
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'Gradient(white:yellow)', 'Gradient(white:cyan)', 'Gradient(white:navy)',
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'Gradient(white:gray)', 'Gradient(white:black)']";
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// We do not have labels other than global in this feedback type.
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if ($feedbacktype == 'global') {
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$labels = array($globallabel);
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}
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switch ($charttype) {
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case 'bipolar':
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// Global feedback with only one score.
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if ($feedbacktype == 'global') {
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if ($score) {
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if ($allresponses) {
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$score = null;
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} else {
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$score2 = $score;
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$score = array($score2[0]);
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$oppositescore = array($score2[1]);
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}
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}
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if ($allscore) {
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$allscore2 = $allscore;
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$allscore = array($allscore2[0]);
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$alloppositescore = array($allscore2[1]);
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}
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$nblabels = 1.5; // For a single horizontal bar with 1.5 height.
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$nbvalues = 1; // Only one hbar.
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} else {
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if ($score) {
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$oppositescore = array();
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foreach ($score as $sc) {
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$oppositescore[] = 100 - $sc;
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}
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}
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if ($allscore) {
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$alloppositescore = array();
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foreach ($allscore as $sc) {
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$alloppositescore[] = 100 - $sc;
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}
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}
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}
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foreach ($labels as $key => $label) {
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$lb = explode("|", $label);
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// Just in case there is no pipe separator in label.
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if (count($lb) > 1) {
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$left = $lb[0];
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$right = $lb[1];
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// Lib core_text and diff needed for non-ascii characters.
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$lenleft = core_text::strlen($left);
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$diffleft = strlen($left) - $lenleft;
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$lenright = core_text::strlen($right);
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$diffright = strlen($right) - $lenright;
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if ($lenleft < $lenright) {
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$padlength = $lenright + $diffleft;
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$left = str_pad($left, $padlength, ' ', STR_PAD_LEFT);
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}
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if ($lenleft > $lenright) {
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$padlength = $lenleft + $diffright;
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$right = str_pad($right, $padlength, ' ', STR_PAD_RIGHT);
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}
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$labels[$key] = $left .' '.$right;
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}
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}
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// Find length of longest label.
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$maxlen = 0;
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foreach ($labels as $label) {
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$labellen = core_text::strlen($label);
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if ($labellen > $maxlen) {
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$maxlen = $labellen;
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}
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}
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$labels = json_encode($labels, JSON_UNESCAPED_UNICODE);
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// JSON_UNESCAPED_UNICODE available since php 5.4, used to correctly treat French accents etc.
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// The bar colors :: use green for "positive" (left column) and pink for "negative" (right column).
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$chartcolors = array();
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$chartcolors2 = array();
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if ($score) {
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for ($i = 0; $i < $nbvalues; $i++) {
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if ($score[$i] != 0) {
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$chartcolors[] = 'lightgreen';
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}
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}
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for ($i = $nbvalues; $i < $nbvalues * 2; $i++) {
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$chartcolors[] = 'pink';
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}
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}
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if ($allscore) {
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for ($i = 0; $i < $nbvalues; $i++) {
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if ($allscore[$i] != 0) {
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$chartcolors2[] = 'lightgreen';
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}
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}
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for ($i = $nbvalues; $i < $nbvalues * 2; $i++) {
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$chartcolors2[] = 'pink';
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}
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}
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// Encode all arrays for javascript compatibility.
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$chartcolors = json_encode($chartcolors);
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if ($allscore) {
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$chartcolors2 = json_encode($chartcolors2);
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}
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if ($score) {
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$score = json_encode($score);
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$oppositescore = json_encode($oppositescore);
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}
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if ($allscore) {
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$allscore = json_encode($allscore);
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$alloppositescore = json_encode($alloppositescore);
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}
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$canvasheight = ($nblabels * 25) + 60;
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$canvaswidth = max(300, (100 + ($maxlen * 7)));
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if (!$allresponses) {
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$pageoutput .= '
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<canvas id="cvs" width="'.$canvaswidth.'" height="'.$canvasheight.'">[No canvas support]</canvas>
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';
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}
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if ($allscore) {
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$pageoutput .= '
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<canvas id="cvs2" width="'.$canvaswidth.'" height="'.$canvasheight.'">[No canvas support]</canvas>
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';
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}
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$pageoutput .= '
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<script>
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window.onload = function () {';
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if (!$allresponses) {
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$pageoutput .= '
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var chart = new RGraph.Bipolar("cvs", '.$score.', '.$oppositescore.');
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chart.Set("chart.title", "'.$charttitle.'");
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chart.Set("chart.title.font", "'.$charttitlefont.'");
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chart.Set("chart.title.size", "'.$charttitlesize.'");
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chart.Set("chart.labels", '.$labels.');
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chart.Set("chart.gutter.center", 0);
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chart.Set("chart.gutter.left", 10);
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chart.Set("chart.gutter.top", 40);
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chart.Set("chart.gutter.bottom", 20);
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chart.Set("chart.xmax", 100);
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chart.Set("chart.text.size", 10);
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chart.Set("chart.text.font", "Courier");
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chart.Set("chart.colors", '.$chartcolors.');
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chart.Set("chart.colors.sequential", true);
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chart.Draw();';
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}
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if ($allscore) {
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$pageoutput .= '
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var chart = new RGraph.Bipolar("cvs2", '.$allscore.', '.$alloppositescore.');
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chart.Set("chart.title", "'.$charttitle2.'");
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chart.Set("chart.title.font", "'.$charttitlefont.'");
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chart.Set("chart.title.size", "'.$charttitlesize2.'");
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chart.Set("chart.labels", '.$labels.');
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chart.Set("chart.gutter.center", 0);
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chart.Set("chart.gutter.left", 10);
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chart.Set("chart.gutter.right", 15);
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chart.Set("chart.gutter.top", 40);
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chart.Set("chart.gutter.bottom", 20);
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chart.Set("chart.xmax", 100);
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chart.Set("chart.text.size", 10);
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chart.Set("chart.text.font", "Courier");
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chart.Set("chart.colors", '.$chartcolors2.');
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chart.Set("chart.colors.sequential", true);
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chart.Draw();
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';
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}
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$pageoutput .= '
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}
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</script>
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';
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break;
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case 'hbar':
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// The bar colors.
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$chartcolors = array();
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$chartcolors = json_encode($chartcolors);
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$sequential = 'true';
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// Global feedback with only one score.
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if ($feedbacktype == 'global') {
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$lb = explode("|", $globallabel);
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// Just in case there is no pipe separator in label.
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if (count($lb) > 1) {
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$labels = '';
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$left = $lb[0];
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$right = $lb[1];
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$lenleft = core_text::strlen($left);
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$lenright = core_text::strlen($right);
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if ($lenleft < $lenright) {
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$padlength = $lenright;
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$left = str_pad($left, $padlength, ' ', STR_PAD_LEFT);
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}
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if ($lenleft > $lenright) {
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$padlength = $lenleft;
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$right = str_pad($right, $padlength, ' ', STR_PAD_RIGHT);
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}
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$labels[0] = $left;
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$labels[1] = $right;
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}
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} else {
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if ($nblabels > $nbvalues) {
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for ($i = 1; $i < $nblabels - 1; $i++) {
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unset($labels[$i]);
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}
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}
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$sequential = 'false';
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}
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$nblabels = count($labels) + 1;
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$score = json_encode($score);
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if ($allscore) {
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$allscore = json_encode($allscore);
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}
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// Find length of longest label.
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$maxlen = 0;
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foreach ($labels as $label) {
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$labellen = core_text::strlen($label);
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if ($labellen > $maxlen) {
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$maxlen = $labellen;
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}
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}
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foreach ($labels as $value) {
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$output[] = '"'.$value.'"';
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}
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$labels = '[' . implode(',', $output) . ']';
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$canvasheight = ($nblabels * 20) + 60;
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$charttextfont = 'Courier';
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$gutterleft = ($maxlen * 8) + 5;
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$canvaswidth = 400 + $gutterleft;
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if (!$allresponses) {
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$pageoutput .= '
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<canvas id="cvs" width="'.$canvaswidth.'" height="'.$canvasheight.'">[No canvas support]</canvas>
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';
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}
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if ($allscore) {
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$pageoutput .= '
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<canvas id="cvs2" width="'.$canvaswidth.'" height="'.$canvasheight.'">[No canvas support]</canvas>
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';
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}
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$pageoutput .= '
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<script>
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window.onload = function () {';
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if (!$allresponses) {
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$pageoutput .= '
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var chart = new RGraph.HBar("cvs", '.$score.');
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chart.Set("chart.title", "'.$charttitle.'");
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chart.Set("chart.title.font", "'.$charttitlefont.'");
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chart.Set("chart.title.size", "'.$charttitlesize.'");
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chart.Set("chart.title.x", 400);
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chart.Set("gutter.left", "'.$gutterleft.'");
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chart.Set("gutter.right", 2);
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chart.Set("chart.text.font", "'.$charttextfont.'");
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chart.Set("labels", '.$labels.');
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chart.Set("chart.colors", '.$chartcolorsgradient.');
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chart.Set("chart.colors.sequential", '.$sequential.');
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chart.Set("xmax",100);
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chart.Draw();
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';
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}
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if ($allscore) {
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$pageoutput .= '
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var chart = new RGraph.HBar("cvs2", '.$allscore.');
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chart.Set("chart.title", "'.$charttitle2.'");
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chart.Set("chart.title.font", "'.$charttitlefont.'");
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chart.Set("chart.title.size", "'.$charttitlesize.'");
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chart.Set("chart.title.x", 400);
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chart.Set("gutter.left", "'.$gutterleft.'");
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chart.Set("gutter.right", 2);
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chart.Set("chart.text.font", "'.$charttextfont.'");
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chart.Set("labels", '.$labels.');
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chart.Set("chart.colors", '.$chartcolorsgradient.');
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chart.Set("chart.colors.sequential", '.$sequential.');
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chart.Set("xmax",100);
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chart.Draw();
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';
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}
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$pageoutput .= '
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}
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</script>
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|
345 |
';
|
|
|
346 |
break;
|
|
|
347 |
|
|
|
348 |
case 'radar':
|
|
|
349 |
$score = json_encode($score);
|
|
|
350 |
foreach ($labels as $key => $label) {
|
|
|
351 |
if ($key != 0) {
|
|
|
352 |
$labels[$key] = wordwrap($label, 20, "\\r\\n");
|
|
|
353 |
} else {
|
|
|
354 |
$labels[$key] = $label ."\\r\\n";
|
|
|
355 |
}
|
|
|
356 |
}
|
|
|
357 |
foreach ($labels as $value) {
|
|
|
358 |
$output[] = '"'.$value.'"';
|
|
|
359 |
}
|
|
|
360 |
$labels = '[' . implode(',', $output) . ']';
|
|
|
361 |
if ($allscore) {
|
|
|
362 |
$allscore = json_encode($allscore);
|
|
|
363 |
}
|
|
|
364 |
if (!$allresponses) {
|
|
|
365 |
$pageoutput .= '
|
|
|
366 |
<canvas id="cvs" width="550" height="400">[No canvas support]</canvas>
|
|
|
367 |
';
|
|
|
368 |
}
|
|
|
369 |
if ($allscore) {
|
|
|
370 |
$pageoutput .= '
|
|
|
371 |
<canvas id="cvs2" width="550" height="400">[No canvas support]</canvas>
|
|
|
372 |
';
|
|
|
373 |
}
|
|
|
374 |
$pageoutput .= '
|
|
|
375 |
<script>
|
|
|
376 |
window.onload = function () {';
|
|
|
377 |
if (!$allresponses) {
|
|
|
378 |
$pageoutput .= '
|
|
|
379 |
var chart = new RGraph.Radar("cvs", '.$score.');
|
|
|
380 |
chart.Set("chart.title", "'.$charttitle.'");
|
|
|
381 |
chart.Set("chart.labels", '.$labels.');
|
|
|
382 |
chart.Set("chart.labels.offset", 15);
|
|
|
383 |
chart.Set("chart.radius", 150);
|
|
|
384 |
chart.Set("chart.ymax", 100);
|
|
|
385 |
chart.Set("chart.labels.axes","n");
|
|
|
386 |
chart.Draw();
|
|
|
387 |
';
|
|
|
388 |
}
|
|
|
389 |
if ($allscore) {
|
|
|
390 |
$pageoutput .= '
|
|
|
391 |
var chart = new RGraph.Radar("cvs2", '.$allscore.');
|
|
|
392 |
chart.Set("chart.title", "'.$charttitle2.'");
|
|
|
393 |
chart.Set("chart.labels", '.$labels.');
|
|
|
394 |
chart.Set("chart.labels.offset", 15);
|
|
|
395 |
chart.Set("chart.radius", 150);
|
|
|
396 |
chart.Set("chart.ymax", 100);
|
|
|
397 |
chart.Set("chart.labels.axes","n");
|
|
|
398 |
chart.Draw();
|
|
|
399 |
';
|
|
|
400 |
}
|
|
|
401 |
$pageoutput .= '
|
|
|
402 |
}
|
|
|
403 |
</script>
|
|
|
404 |
';
|
|
|
405 |
break;
|
|
|
406 |
|
|
|
407 |
case 'rose':
|
|
|
408 |
if ($score != 'null') {
|
|
|
409 |
$score = json_encode($score);
|
|
|
410 |
}
|
|
|
411 |
|
|
|
412 |
foreach ($labels as $key => $label) {
|
|
|
413 |
$labels[$key] = wordwrap($label, 8, "\\r\\n");
|
|
|
414 |
}
|
|
|
415 |
foreach ($labels as $value) {
|
|
|
416 |
$output[] = '"'.$value.'"';
|
|
|
417 |
}
|
|
|
418 |
$labels = '[' . implode(',', $output) . ']';
|
|
|
419 |
|
|
|
420 |
if ($allscore) {
|
|
|
421 |
$allscore = json_encode($allscore);
|
|
|
422 |
}
|
|
|
423 |
$size = 400;
|
|
|
424 |
if (!$allresponses) {
|
|
|
425 |
$pageoutput .= '
|
|
|
426 |
<canvas id="cvs" width="'.$size.'" height="'.$size.'">[No canvas support]</canvas>
|
|
|
427 |
';
|
|
|
428 |
}
|
|
|
429 |
if ($allscore) {
|
|
|
430 |
$pageoutput .= '
|
|
|
431 |
<canvas id="cvs2" width="'.$size.'" height="'.$size.'">[No canvas support]</canvas>
|
|
|
432 |
';
|
|
|
433 |
}
|
|
|
434 |
$pageoutput .= '
|
|
|
435 |
<script>
|
|
|
436 |
window.onload = function () {';
|
|
|
437 |
if (!$allresponses) {
|
|
|
438 |
$pageoutput .= '
|
|
|
439 |
var chart = new RGraph.Rose("cvs", '.$score.');
|
|
|
440 |
chart.Set("chart.title", "'.$charttitle.'");
|
|
|
441 |
chart.Set("chart.title.font", "'.$charttitlefont.'");
|
|
|
442 |
chart.Set("chart.title.size", "'.$charttitlesize.'");
|
|
|
443 |
chart.Set("chart.title.vpos", 0.2);
|
|
|
444 |
chart.Set("chart.labels", '.$labels.');
|
|
|
445 |
chart.Set("chart.labels.offset", 10);
|
|
|
446 |
chart.Set("chart.background.grid.spokes", '.$nblabels.');
|
|
|
447 |
chart.Set("chart.labels.axes","n");
|
|
|
448 |
chart.Set("chart.radius", 100);
|
|
|
449 |
chart.Set("chart.ymax", 100);
|
|
|
450 |
chart.Set("chart.background.axes", false);
|
|
|
451 |
chart.Set("chart.colors.sequential", true);
|
|
|
452 |
chart.Set("chart.colors", ["Gradient(white:red)","Gradient(white:green)","Gradient(white:blue)",
|
|
|
453 |
"Gradient(white:gray)","Gradient(white:purple)","Gradient(white:pink)",
|
|
|
454 |
"Gradient(white:orange)","Gradient(white:black)"]);
|
|
|
455 |
chart.Draw();
|
|
|
456 |
';
|
|
|
457 |
}
|
|
|
458 |
if ($allscore) {
|
|
|
459 |
$pageoutput .= '
|
|
|
460 |
var chart = new RGraph.Rose("cvs2", '.$allscore.');
|
|
|
461 |
chart.Set("chart.title", "'.$charttitle2.'");
|
|
|
462 |
chart.Set("chart.title.font", "'.$charttitlefont.'");
|
|
|
463 |
chart.Set("chart.title.size", "'.$charttitlesize.'");
|
|
|
464 |
chart.Set("chart.title.vpos", 0.2);
|
|
|
465 |
chart.Set("chart.labels", '.$labels.');
|
|
|
466 |
chart.Set("chart.labels.offset", 10);
|
|
|
467 |
chart.Set("chart.background.grid.spokes", '.$nblabels.');
|
|
|
468 |
chart.Set("chart.labels.axes","n");
|
|
|
469 |
chart.Set("chart.radius", 100);
|
|
|
470 |
chart.Set("chart.ymax", 100);
|
|
|
471 |
chart.Set("chart.background.axes", false);
|
|
|
472 |
chart.Set("chart.colors.sequential", true);
|
|
|
473 |
chart.Set("chart.colors", ["Gradient(white:red)","Gradient(white:green)","Gradient(white:blue)",
|
|
|
474 |
"Gradient(white:gray)","Gradient(white:purple)","Gradient(white:pink)",
|
|
|
475 |
"Gradient(white:orange)","Gradient(white:black)"]);
|
|
|
476 |
chart.Draw();
|
|
|
477 |
';
|
|
|
478 |
}
|
|
|
479 |
$pageoutput .= '
|
|
|
480 |
}
|
|
|
481 |
</script>
|
|
|
482 |
';
|
|
|
483 |
break;
|
|
|
484 |
|
|
|
485 |
case 'vprogress':
|
|
|
486 |
if (!$allresponses) {
|
|
|
487 |
$score = $score[0];
|
|
|
488 |
} else {
|
|
|
489 |
$score = null;
|
|
|
490 |
}
|
|
|
491 |
$score = json_encode($score);
|
|
|
492 |
if ($allscore) {
|
|
|
493 |
$allscore = json_encode($allscore[0]);
|
|
|
494 |
}
|
|
|
495 |
// Check presence of pipe separator in label.
|
|
|
496 |
$lb = explode("|", $globallabel);
|
|
|
497 |
$maxlen = 0;
|
|
|
498 |
if (count($lb) > 1) {
|
|
|
499 |
$labels = array_reverse($lb);
|
|
|
500 |
// Find length of longest label.
|
|
|
501 |
$maxlen = 0;
|
|
|
502 |
foreach ($labels as $label) {
|
|
|
503 |
$labellen = core_text::strlen($label);
|
|
|
504 |
if ($labellen > $maxlen) {
|
|
|
505 |
$maxlen = $labellen;
|
|
|
506 |
}
|
|
|
507 |
}
|
|
|
508 |
foreach ($labels as $value) {
|
|
|
509 |
$output[] = '"'.$value.'"';
|
|
|
510 |
}
|
|
|
511 |
$labels = '[' . implode(',', $output) . ']';
|
|
|
512 |
} else {
|
|
|
513 |
$labels = '';
|
|
|
514 |
}
|
|
|
515 |
$charttextfont = 'Courier';
|
|
|
516 |
$gutterright = 150 + ($maxlen * 3);
|
|
|
517 |
$canvaswidth = 250 + ($maxlen * 3);
|
|
|
518 |
|
|
|
519 |
if (!$allresponses) {
|
|
|
520 |
$pageoutput .= '
|
|
|
521 |
<canvas id="cvs" width="'.$canvaswidth.'" height="400">[No canvas support]</canvas>
|
|
|
522 |
';
|
|
|
523 |
}
|
|
|
524 |
if ($allscore) {
|
|
|
525 |
$pageoutput .= '
|
|
|
526 |
<canvas id="cvs2" width="250" height="400">[No canvas support]</canvas>
|
|
|
527 |
';
|
|
|
528 |
}
|
|
|
529 |
$pageoutput .= '
|
|
|
530 |
<script>
|
|
|
531 |
window.onload = function () {';
|
|
|
532 |
|
|
|
533 |
if (!$allresponses) {
|
|
|
534 |
$pageoutput .= '
|
|
|
535 |
var chart = new RGraph.VProgress("cvs", '.$score.',100);
|
|
|
536 |
chart.Set("chart.gutter.top", 30);
|
|
|
537 |
chart.Set("chart.gutter.left", 50);
|
|
|
538 |
chart.Set("chart.gutter.right", "'.$gutterright.'");
|
|
|
539 |
chart.Set("scale.decimals", 0);
|
|
|
540 |
chart.Set("chart.text.font", "'.$charttextfont.'");
|
|
|
541 |
chart.Set("chart.title", "'.$charttitle.'");
|
|
|
542 |
chart.Set("chart.title.font", "'.$charttitlefont.'");
|
|
|
543 |
chart.Set("chart.title.size", "'.$charttitlesize.'");
|
|
|
544 |
';
|
|
|
545 |
|
|
|
546 |
if ($labels) {
|
|
|
547 |
$pageoutput .= '
|
|
|
548 |
chart.Set("chart.labels.specific", '.$labels.');
|
|
|
549 |
';
|
|
|
550 |
}
|
|
|
551 |
$pageoutput .= '
|
|
|
552 |
chart.Draw();
|
|
|
553 |
';
|
|
|
554 |
}
|
|
|
555 |
if ($allscore) {
|
|
|
556 |
// Display participants graph.
|
|
|
557 |
$pageoutput .= '
|
|
|
558 |
var chart = new RGraph.VProgress("cvs2", '.$allscore.',100);
|
|
|
559 |
chart.Set("chart.gutter.top", 30);
|
|
|
560 |
chart.Set("chart.gutter.left", 50);
|
|
|
561 |
chart.Set("chart.gutter.right", 150);
|
|
|
562 |
chart.Set("chart.title", "'.$charttitle2.'");
|
|
|
563 |
chart.Set("chart.text.font", "'.$charttextfont.'");
|
|
|
564 |
chart.Set("chart.title.font", "'.$charttitlefont.'");
|
|
|
565 |
chart.Set("chart.title.size", "'.$charttitlesize.'");
|
|
|
566 |
chart.Set("scale.decimals", 0);
|
|
|
567 |
chart.Draw();
|
|
|
568 |
';
|
|
|
569 |
}
|
|
|
570 |
$pageoutput .= '
|
|
|
571 |
}
|
|
|
572 |
</script>
|
|
|
573 |
';
|
|
|
574 |
break;
|
|
|
575 |
}
|
|
|
576 |
|
|
|
577 |
return $pageoutput;
|
|
|
578 |
}
|