413 lines
7.1 KiB
PHP
Executable File
413 lines
7.1 KiB
PHP
Executable File
<?php
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/*
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* This work is hereby released into the Public Domain.
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* To view a copy of the public domain dedication,
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* visit http://creativecommons.org/licenses/publicdomain/ or send a letter to
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* Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.
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*
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*/
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require_once dirname(__FILE__)."/Image.class.php";
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/**
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* A graph
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*
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* @package Artichow
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*/
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class awGraph extends awImage {
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/**
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* Graph name
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*
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* @var string
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*/
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protected $name;
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/**
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* Cache timeout
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*
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* @var int
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*/
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protected $timeout = 0;
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/**
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* Graph timing ?
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*
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* @var bool
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*/
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protected $timing;
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/**
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* Components
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*
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* @var array
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*/
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private $components = array();
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/**
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* Some labels to add to the component
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*
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* @var array
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*/
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protected $labels = array();
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/**
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* Graph title
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*
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* @var Label
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*/
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public $title;
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/**
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* File cache location
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*
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* @var string
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*/
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private $fileCache;
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/**
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* Time file cache location
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*
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* @var string
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*/
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private $fileCacheTime;
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/**
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* Drawing mode to return the graph
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*
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* @var int
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*/
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const DRAW_RETURN = 1;
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/**
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* Drawing mode to display the graph
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*
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* @var int
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*/
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const DRAW_DISPLAY = 2;
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/**
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* Construct a new graph
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*
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* @param int $width Graph width
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* @param int $height Graph height
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* @param string $name Graph name for the cache (must be unique). Let it null to not use the cache.
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* @param int $timeout Cache timeout (unix timestamp)
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*/
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public function __construct($width = NULL, $height = NULL, $name = NULL, $timeout = 0) {
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parent::__construct();
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$this->setSize($width, $height);
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if (ARTICHOW_CACHE) {
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$this->name = $name;
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$this->timeout = $timeout;
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// Clean sometimes all the cache
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if (mt_rand(0, 5000) === 0) {
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awGraph::cleanCache();
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}
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// Take the graph from the cache if possible
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if ($this->name !== NULL) {
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$this->fileCache = ARTICHOW_CACHE_DIRECTORY."/".$this->name;
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$this->fileCacheTime = $this->fileCache."-time";
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if (is_file($this->fileCache)) {
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$type = awGraph::cleanGraphCache($this->fileCacheTime);
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if ($type === NULL) {
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awGraph::deleteFromCache($this->name);
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} else {
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header("Content-Type: image/".$type);
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echo file_get_contents($this->fileCache);
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exit;
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}
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}
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}
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}
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$this->title = new awLabel(
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NULL,
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new awTuffy(16),
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NULL,
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0
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);
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$this->title->setAlign(awLabel::CENTER, awLabel::BOTTOM);
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}
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/**
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* Delete a graph from the cache
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*
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* @param string $name Graph name
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* @return bool TRUE on success, FALSE on failure
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*/
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public static function deleteFromCache($name) {
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if (ARTICHOW_CACHE) {
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if (is_file(ARTICHOW_CACHE_DIRECTORY."/".$name."-time")) {
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unlink(ARTICHOW_CACHE_DIRECTORY."/".$name."");
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unlink(ARTICHOW_CACHE_DIRECTORY."/".$name."-time");
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}
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}
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}
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/**
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* Delete all graphs from the cache
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*/
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public static function deleteAllCache() {
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if (ARTICHOW_CACHE) {
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$dp = opendir(ARTICHOW_CACHE_DIRECTORY);
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while ($file = readdir($dp)) {
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if ($file !== '.' and $file != '..') {
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unlink(ARTICHOW_CACHE_DIRECTORY."/".$file);
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}
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}
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}
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}
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/**
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* Clean cache
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*/
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public static function cleanCache() {
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if (ARTICHOW_CACHE) {
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$glob = glob(ARTICHOW_CACHE_DIRECTORY."/*-time");
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foreach($glob as $file) {
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$type = awGraph::cleanGraphCache($file);
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if ($type === NULL) {
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$name = preg_replace('!.*/(.*)\-time!', "\\1", $file);
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awGraph::deleteFromCache($name);
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}
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}
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}
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}
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/**
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* Enable/Disable Graph timing
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*
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* @param bool $timing
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*/
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public function setTiming($timing) {
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$this->timing = (bool)$timing;
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}
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/**
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* Add a component to the graph
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*
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* @param awComponent $component
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*/
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public function add(awComponent $component) {
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$this->components[] = $component;
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}
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/**
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* Add a label to the component
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*
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* @param awLabel $label
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* @param int $x Position on X axis of the center of the text
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* @param int $y Position on Y axis of the center of the text
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*/
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public function addLabel(awLabel $label, $x, $y) {
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$this->labels[] = array(
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$label, $x, $y
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);
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}
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/**
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* Add a label to the component with absolute position
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*
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* @param awLabel $label
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* @param awPoint $point Text position
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*/
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public function addAbsLabel(awLabel $label, awPoint $point) {
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$this->labels[] = array(
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$label, $point
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);
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}
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/**
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* Build the graph and draw component on it
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*
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* @param string $mode Display mode (can be a file name)
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*/
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public function draw($mode = Graph::DRAW_DISPLAY) {
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if ($this->timing) {
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$time = microtimeFloat();
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}
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$this->create();
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foreach($this->components as $component) {
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$this->drawComponent($component);
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}
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$this->drawTitle();
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$this->drawShadow();
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$this->drawLabels();
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if ($this->timing) {
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$this->drawTiming(microtimeFloat() - $time);
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}
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// Create graph
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$data = $this->get();
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// Put the graph in the cache if needed
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$this->cache($data);
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switch($mode) {
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case Graph::DRAW_DISPLAY :
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$this->sendHeaders();
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echo $data;
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break;
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case Graph::DRAW_RETURN :
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return $data;
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default :
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if (is_string($mode)) {
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file_put_contents($mode, $data);
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} else {
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awImage::drawError("Class Graph: Unable to draw the graph.");
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}
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}
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}
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private function drawLabels() {
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$driver = $this->getDriver();
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foreach($this->labels as $array) {
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if (count($array) === 3) {
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// Text in relative position
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list($label, $x, $y) = $array;
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$point = new awPoint(
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$x * $this->width,
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$y * $this->height
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);
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} else {
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// Text in absolute position
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list($label, $point) = $array;
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}
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$label->draw($driver, $point);
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}
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}
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private function drawTitle() {
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$driver = $this->getDriver();
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$point = new awPoint(
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$this->width / 2,
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10
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);
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$this->title->draw($driver, $point);
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}
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private function drawTiming($time) {
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$driver = $this->getDriver();
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$label = new awLabel;
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$label->set("(".sprintf("%.3f", $time)." s)");
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$label->setAlign(awLabel::LEFT, awLabel::TOP);
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$label->border->show();
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$label->setPadding(1, 0, 0, 0);
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$label->setBackgroundColor(new awColor(230, 230, 230, 25));
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$label->draw($driver, new awPoint(5, $driver->imageHeight - 5));
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}
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private function cache($data) {
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if (ARTICHOW_CACHE and $this->name !== NULL) {
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if (is_writable(ARTICHOW_CACHE_DIRECTORY) === FALSE) {
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awImage::drawError("Class Graph: Cache directory is not writable.");
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}
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file_put_contents($this->fileCache, $data);
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file_put_contents($this->fileCacheTime, $this->timeout."\n".$this->getFormatString());
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}
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}
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private static function cleanGraphCache($file) {
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list(
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$time,
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$type
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) = explode("\n", file_get_contents($file));
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$time = (int)$time;
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if ($time !== 0 and $time < time()) {
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return NULL;
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} else {
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return $type;
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}
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}
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}
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registerClass('Graph');
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/*
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* To preserve PHP 4 compatibility
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*/
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function microtimeFloat() {
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list($usec, $sec) = explode(" ", microtime());
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return (float)$usec + (float)$sec;
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}
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