e2pdf / vendors / svggraph / MultiGraph.php

MultiGraph.php in E2Pdf – Export Pdf Tool for WordPress 1.32.23, at vendors/svggraph/MultiGraph.php

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1	<?php
2	/**
3	* Copyright (C) 2011-2022 Graham Breach
4	*
5	* This program is free software: you can redistribute it and/or modify
6	* it under the terms of the GNU Lesser General Public License as published by
7	* the Free Software Foundation, either version 3 of the License, or
8	* (at your option) any later version.
9	*
10	* This program is distributed in the hope that it will be useful,
11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13	* GNU Lesser General Public License for more details.
14	*
15	* You should have received a copy of the GNU Lesser General Public License
16	* along with this program. If not, see <http://www.gnu.org/licenses/>.
17	*/
18	/**
19	* For more information, please contact <graham@goat1000.com>
20	*/
21
22	namespace Goat1000\SVGGraph;
23
24	class MultiGraph implements \Countable, \ArrayAccess, \Iterator {
25
26	private $values;
27	private $datasets = 0;
28	private $enabled_datasets = null;
29	private $force_assoc;
30	private $datetime_keys;
31	private $max_key = null;
32	private $min_key = null;
33	private $max_value = null;
34	private $min_value = null;
35	private $max_sum_value = null;
36	private $min_sum_value = null;
37	private $item_list = [];
38	private $position = 0;
39	private $item_cache = [];
40	private $item_cache_pos = -1;
41
42	public function __construct($values, $force_assoc, $datetime_keys, $int_keys)
43	{
44	$this->values =& $values;
45	$this->force_assoc = $force_assoc;
46	$this->datetime_keys = $datetime_keys;
47	$keys = [];
48
49	// convert unstructured data to structured
50	if(count($values) > 1 && $this->values instanceof Data) {
51	$this->values = StructuredData::convertFrom($values, $force_assoc,
52	$datetime_keys, $int_keys);
53	}
54	$this->datasets = count($this->values);
55	$this->enabled_datasets = range(0, $this->datasets - 1);
56	}
57
58	/**
59	* Sets the list of datasets that are enabled
60	*/
61	public function setEnabledDatasets($datasets)
62	{
63	if($datasets === null)
64	$datasets = range(0, $this->datasets - 1);
65	if(!is_array($datasets))
66	$datasets = [$datasets];
67
68	$enabled = [];
69	foreach($datasets as $d)
70	if($d >= 0 && $d < $this->datasets)
71	$enabled[] = $d;
72	$this->enabled_datasets = $enabled;
73	}
74
75	/**
76	* Returns the list of enabled datasets
77	*/
78	public function getEnabledDatasets()
79	{
80	return $this->enabled_datasets;
81	}
82
83	/**
84	* Pass all unhandled functions through to the structured data instance
85	*/
86	public function __call($name, $arguments)
87	{
88	return call_user_func_array([$this->values, $name], $arguments);
89	}
90
91	/**
92	* Implement Iterator interface
93	*/
94	#[\ReturnTypeWillChange]
95	public function current()
96	{
97	if($this->item_cache_pos != $this->position) {
98	$this->item_cache[0] = $this->values[0]->getItemByIndex($this->position);
99
100	// use NewFrom to create other data items quicker
101	for($i = 1; $i < $this->datasets; ++$i)
102	$this->item_cache[$i] = $this->item_cache[0]->newFrom($i);
103	$this->item_cache_pos = $this->position;
104	}
105	return $this->item_cache;
106	}
107	#[\ReturnTypeWillChange]
108	public function key()
109	{
110	return $this->position;
111	}
112	#[\ReturnTypeWillChange]
113	public function next()
114	{
115	++$this->position;
116	}
117	#[\ReturnTypeWillChange]
118	public function rewind()
119	{
120	$this->position = 0;
121	}
122	#[\ReturnTypeWillChange]
123	public function valid()
124	{
125	return $this->position < $this->itemsCount();
126	}
127
128	/**
129	* ArrayAccess methods
130	*/
131	#[\ReturnTypeWillChange]
132	public function offsetExists($offset)
133	{
134	return ($offset >= 0 && $offset < $this->datasets);
135	}
136
137	#[\ReturnTypeWillChange]
138	public function offsetGet($offset)
139	{
140	return $this->values[$offset];
141	}
142
143	/**
144	* Don't allow writing to the data
145	*/
146	#[\ReturnTypeWillChange]
147	public function offsetSet($offset, $value)
148	{
149	throw new \Exception('Read-only');
150	}
151	#[\ReturnTypeWillChange]
152	public function offsetUnset($offset)
153	{
154	throw new \Exception('Read-only');
155	}
156
157	/**
158	* Countable method
159	*/
160	#[\ReturnTypeWillChange]
161	public function count()
162	{
163	return $this->datasets;
164	}
165
166	/**
167	* Returns the number of items
168	*/
169	public function itemsCount()
170	{
171	// use -1 for all items
172	return $this->values->itemsCount(-1);
173	}
174
175	/**
176	* Returns the maximum value
177	*/
178	public function getMaxValue()
179	{
180	if($this->max_value !== null)
181	return $this->max_value;
182	$maxima = [];
183	$chunk_count = count($this->values);
184	for($i = 0; $i < $chunk_count; ++$i) {
185	if(!in_array($i, $this->enabled_datasets))
186	continue;
187	$maxima[] = $this->values->getMaxValue($i);
188	}
189
190	$this->max_value = count($maxima) ? max($maxima) : null;
191	return $this->max_value;
192	}
193
194
195	/**
196	* Returns the minimum value
197	*/
198	public function getMinValue()
199	{
200	if($this->min_value !== null)
201	return $this->min_value;
202	$minima = [];
203	$chunk_count = count($this->values);
204	for($i = 0; $i < $chunk_count; ++$i) {
205	if(!in_array($i, $this->enabled_datasets))
206	continue;
207	$min_val = $this->values->getMinValue($i);
208	if($min_val !== null)
209	$minima[] = $min_val;
210	}
211
212	$this->min_value = count($minima) ? min($minima) : null;
213	return $this->min_value;
214	}
215
216
217	/**
218	* Returns the maximum key value
219	*/
220	public function getMaxKey()
221	{
222	if($this->max_key !== null)
223	return $this->max_key;
224
225	$max = [];
226	for($i = 0; $i < $this->datasets; ++$i) {
227	if(!in_array($i, $this->enabled_datasets))
228	continue;
229	$max[] = $this->values->getMaxKey($i);
230	}
231	$this->max_key = count($max) ? max($max) : null;
232	return $this->max_key;
233	}
234
235	/**
236	* Returns the minimum key value
237	*/
238	public function getMinKey()
239	{
240	if($this->min_key !== null)
241	return $this->min_key;
242
243	$min = [];
244	for($i = 0; $i < $this->datasets; ++$i) {
245	if(!in_array($i, $this->enabled_datasets))
246	continue;
247	$min[] = $this->values->getMinKey($i);
248	}
249	$this->min_key = count($min) ? min($min) : null;
250	return $this->min_key;
251	}
252
253	/**
254	* Returns the maximum sum value
255	*/
256	public function getMaxSumValue()
257	{
258	if($this->max_sum_value === null)
259	$this->calcMinMaxSumValues();
260	return $this->max_sum_value;
261	}
262
263	/**
264	* Returns the minimum sum value (the negative part)
265	*/
266	public function getMinSumValue()
267	{
268	if($this->min_sum_value === null)
269	$this->calcMinMaxSumValues();
270	return $this->min_sum_value;
271	}
272
273
274	/**
275	* Calculates the minimum and maximum sum values
276	*/
277	public function calcMinMaxSumValues()
278	{
279	list($this->min_sum_value, $this->max_sum_value) =
280	$this->values->getMinMaxSumValuesFor($this->enabled_datasets);
281	}
282
283	/**
284	* Access to the structured data values
285	*/
286	public function &getValues()
287	{
288	return $this->values;
289	}
290
291	/**
292	* Pass through to the structured data values
293	*/
294	public function getData($index, $name, &$value)
295	{
296	// the reference means __call can't handle this
297	return $this->values->getData($index, $name, $value);
298	}
299	}
300
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