e2pdf / vendors / svggraph / ContextMenu.php

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

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1	<?php
2	/**
3	* Copyright (C) 2018-2023 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	/**
25	* Right-click (or long touch) context menu
26	*/
27	class ContextMenu {
28
29	private $graph;
30	private $js;
31
32	private $function_added = false;
33	private $callback;
34	private $use_structure = false;
35	private $namespace = '';
36
37	/**
38	* Constructor sets up options and root menu
39	*/
40	public function __construct(&$graph, &$javascript)
41	{
42	if(!$graph->getOption('show_context_menu'))
43	return;
44	$this->graph =& $graph;
45	$this->js =& $javascript;
46
47	$this->callback = $graph->getOption('context_callback');
48	$structure = $graph->getOption('structure');
49	if(is_array($structure) && isset($structure['context_menu']))
50	$this->use_structure = true;
51	if($graph->getOption('namespace'))
52	$this->namespace = 'svg:';
53
54	$global = $graph->getOption('context_global');
55	if($global !== false) {
56	if($global === null)
57	$global = [ [SVGGraph::VERSION, null] ];
58
59	$entries = '';
60	foreach($global as $entry) {
61	$attr = ['name' => $entry[0], 'link' => $entry[1]];
62	$entries .= $graph->element('svggraph:menuitem', $attr);
63	}
64	$menu = $graph->element('svggraph:menu', null, null, $entries);
65	$xml = $graph->element('svggraph:data',
66	['xmlns:svggraph' => 'http://www.goat1000.com/svggraph'], null, $menu);
67	$graph->defs->add($xml);
68	}
69	}
70
71	/**
72	* Adds the javascript function
73	*/
74	public function addFunction()
75	{
76	$this->js->addFuncs('getE', 'finditem', 'newel', 'newtext',
77	'svgNode', 'setattr', 'getData', 'svgCursorCoords');
78	$this->js->addInitFunction('contextMenuInit');
79
80	$opts = ['link_target', 'link_underline', 'stroke_width', 'round', 'font',
81	'font_weight', 'document_menu', 'spacing', 'min_width',
82	'shadow_opacity', 'mouseleave'];
83	$colours = ['colour', 'link_colour', 'link_hover_colour', 'back_colour'];
84	$vars = [];
85	foreach($opts as $opt)
86	$vars[$opt] = $this->graph->getOption('context_' . $opt);
87	$vars['font_size'] = Number::units($this->graph->getOption('context_font_size'));
88	foreach($colours as $opt)
89	$vars[$opt] = new Colour($this->graph, $this->graph->getOption('context_' . $opt));
90
91	$svg_text = new Text($this->graph, $vars['font']);
92	list(, $text_height) = $svg_text->measure('Test', $vars['font_size']);
93	$text_baseline = $svg_text->baseline($vars['font_size']);
94
95	$vars['pad_x'] = $this->graph->getOption('context_padding_x', 'context_padding');
96	$vars['pad_y'] = $this->graph->getOption('context_padding_y', 'context_padding');
97	$vars['text_start'] = $vars['pad_y'] + $text_baseline;
98	$vars['rect_start'] = $vars['pad_y'] - $vars['spacing'] / 2;
99	$vars['spacing'] += $text_height;
100
101	$vars['round_part'] = $vars['mouseleave'] = $vars['underline_part'] = '';
102	if($vars['link_underline'])
103	$vars['underline_part'] = ", 'text-decoration': 'underline'";
104	if($vars['round']) {
105	$rnum = new Number($vars['round']);
106	$vars['round_part'] = ', rx:"' . $rnum . 'px", ry:"' . $rnum . 'px"';
107	}
108	$cmoffs = 0;
109	$half_stroke = $vars['stroke_width'] / 2;
110	$vars['pad_x'] += $half_stroke;
111	$vars['pad_y'] += $half_stroke;
112
113	$vars['off_right'] = $vars['stroke_width'];
114	$vars['off_bottom'] = $vars['stroke_width'];
115	if(is_numeric($vars['shadow_opacity'])) {
116	$cmoffs = 4;
117	$vars['off_right'] += $cmoffs;
118	$vars['off_bottom'] += $cmoffs;
119	}
120	$vars['cmoffs'] = $cmoffs;
121
122	if($vars['document_menu']) {
123	$this->js->insertFunction('rootContextMenu',
124	"function rootContextMenu(){closeContextMenu();}\n");
125	} else {
126	$this->js->insertTemplate('rootContextMenu');
127	}
128
129	if((int)$vars['mouseleave'] > 0) {
130	$mlnum = new Number($mouseleave);
131	$vars['mouseleave'] = 'e[c].addEventListener("mouseleave",function(e) {' .
132	'setTimeout(closeContextMenu,' . $mlnum . ');}, false);';
133	}
134
135	$vars['namespace'] = $this->namespace;
136	$this->js->insertTemplate('contextMenu', $vars);
137	$this->function_added = true;
138	}
139
140	/**
141	* Adds context menu for item
142	*/
143	public function setMenu(&$element, $dataset, &$item, $duplicate = false)
144	{
145	$menu = null;
146	if(is_callable($this->callback)) {
147	$menu = call_user_func($this->callback, $dataset, $item->key, $item->value);
148	} elseif($this->use_structure) {
149	$menu = $item->context_menu;
150	}
151
152	if(is_array($menu)) {
153	if(!isset($element['id']))
154	$element['id'] = $this->graph->newID();
155	$var = json_encode($menu);
156	$this->js->insertVariable('menus', $element['id'], $var, false);
157	if($duplicate)
158	$this->js->addOverlay($element['id'], $this->graph->newID());
159	} else {
160	// add a placeholder to make sure the variable exists
161	$ignore_id = $this->graph->newID();
162	$this->js->insertVariable('menus', $ignore_id, "''", false);
163	}
164
165	// set up menus after duplication
166	if(!$this->function_added)
167	$this->addFunction();
168	}
169	}
170
171