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Issue 2425083003: Import wpt@4114c724042b41e257caab98f3eb23c143b50de4 (Closed)
Patch Set: Created 4 years, 2 months ago
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1 <!DOCTYPE html>
2 <html>
3 <head>
4 <meta charset="utf-8">
5 <title>Subscripts and Superscripts metrics</title>
6 <link rel="help" href="http://www.mathml-association.org/MathMLinHTML5/S3.html#S S4">
7 <meta name="assert" content="Basic metrics for the mmultiscript element with man y scripts.">
8 <script src="/resources/testharness.js"></script>
9 <script src="/resources/testharnessreport.js"></script>
10 <style>
11 math, mspace {
12 font-size: 10px;
13 }
14 </style>
15 <script>
16 /* This test does not use any specific fonts and so the exact rules are not
17 specified precisely. We assume reasonable values for script shifts and
18 spacing. */
19
20 function getBox(aId) {
21 var box = document.getElementById(aId).getBoundingClientRect();
22 box.middle = (box.bottom + box.top) / 2;
23 return box;
24 }
25
26 setup({ explicit_done: true });
27 window.addEventListener("load", runTests);
28
29 function runTests() {
30 test(function() {
31 var e = 1;
32 for (var i = 0; i < 5; i++)
33 assert_approx_equals(getBox("multi" + i + "base").middle, getBox("baseli ne").bottom, e, "base " + i + "is placed on the baseline");
34 }, "Alignment of the base on the baseline");
35
36 test(function() {
37 var e = 5;
38 assert_approx_equals(getBox("multi0").width, 30, e, "width of multi0");
39 assert_approx_equals(getBox("multi0").height, 30, e, "height of multi0");
40 assert_approx_equals(getBox("multi1").width, 30, e, "width of multi1");
41 assert_approx_equals(getBox("multi1").height, 30, e, "height of multi1");
42 for (i = 2; i <= 4; i++) {
43 var scriptedBox = getBox("multi" + i);
44 var lastPostScript = getBox("multi" + i + "postsup" + (i - 1));
45 var firstPreScript = getBox("multi" + i + "presub1");
46 assert_approx_equals(scriptedBox.height, firstPreScript.bottom - lastPos tScript.top, e, "height of multiscript" + i);
47 assert_approx_equals(scriptedBox.width, lastPostScript.right - firstPreS cript.left, e, "width of multiscript" + i);
48 }
49 }, "Dimensions of the scripted elements");
50
51 test(function() {
52 var e = 3;
53 for (var i = 2; i <= 4; i++) {
54 var base = getBox("multi" + i + "base");
55 for (var j = 1; j < i; j++) {
56 var presup = getBox("multi" + i + "presup" + j);
57 var postsup = getBox("multi" + i + "postsup" + j);
58 var presub = getBox("multi" + i + "presub" + j);
59 var postsub = getBox("multi" + i + "postsub" + j);
60 assert_approx_equals(base.top, presup.middle, e, "multi" + i + " " + j + " presup script");
61 assert_approx_equals(base.top, postsup.middle, e, "multi" + i + " " + j + " postsup script");
62 assert_approx_equals(base.bottom, presub.middle, e, "multi" + i + " " + j + " presub script");
63 assert_approx_equals(base.bottom, postsub.middle, e, "multi" + i + " " + j + " postsub script");
64 }
65 }
66 }, "Vertical positions of scripts");
67
68 test(function() {
69 var e = 1;
70 for (var i = 2; i <= 4; i++) {
71 var base = getBox("multi" + i + "base");
72 for (var j = 1; j < i; j++) {
73 var presup = getBox("multi" + i + "presup" + j);
74 var postsup = getBox("multi" + i + "postsup" + j);
75 var presub = getBox("multi" + i + "presub" + j);
76 var postsub = getBox("multi" + i + "postsub" + j);
77 assert_approx_equals(presup.right, presub.right, e, "multi" + i + "pre ");
78 assert_approx_equals(postsup.left, postsub.left, e, "multi" + i + "pos t");
79 }
80 }
81 }, "Horizontal alignment of scripts");
82
83 test(function() {
84 for (var i = 2; i <= 4; i++) {
85 var base = getBox("multi" + i + "base");
86 var firstPostScript = getBox("multi" + i + "postsub1");
87 var lastPreScript = getBox("multi" + i + "presup" + (i - 1));
88 assert_less_than_equal(base.right, firstPostScript.left, 1, "postcripts are after base");
89 assert_less_than_equal(lastPreScript.right, base.left, 1, "prescripts ar e before base");
90 assert_approx_equals(base.right, firstPostScript.left, 5, "spacing after base is not too large");
91 assert_approx_equals(lastPreScript.right, base.left, 5, "spacing before base is not too large");
92 for (var j = 1; j < i - 1; j++) {
93 var post = getBox("multi" + i + "postsub" + j);
94 var postNext = getBox("multi" + i + "postsub" + (j + 1));
95 var pre = getBox("multi" + i + "presup" + j);
96 var preNext = getBox("multi" + i + "presup" + (j + 1));
97 assert_less_than_equal(post.right, postNext.left, 1, "multi" + i + "or der post" + j + " is before its successor");
98 assert_less_than_equal(pre.right, preNext.left, 1, "multi" + i + "orde r pre" + j + " is before its successor");
99 assert_approx_equals(post.right, postNext.left, 5, "multi" + i + "spac e after post" + j + " is not too large");
100 assert_approx_equals(pre.right, preNext.left, 5, "multi" + i + "space after pre" + j + " is not too large");
101 }
102 }
103 }, "Horizontal positions of scripts");
104
105 done();
106 }
107 </script>
108 </head>
109 <body>
110 <p>
111 <math>
112 <mspace id="baseline" width="30px" height="2px" depth="0px" mathbackground ="blue"/>
113 <mmultiscripts id="multi0" mathbackground="green">
114 <mspace id="multi0base" width="30px" height="15px" depth="15px" mathback ground="black"/>
115 </mmultiscripts>
116 <mmultiscripts id="multi1" mathbackground="green">
117 <mspace id="multi1base" width="30px" height="15px" depth="15px" mathback ground="black"/>
118 <mprescripts/>
119 </mmultiscripts>
120 <mmultiscripts id="multi2" mathbackground="green">
121 <mspace id="multi2base" width="30px" height="15px" depth="15px" mathback ground="black"/>
122 <mspace id="multi2postsub1" width="10px" height="5px" depth="5px" mathba ckground="black"/>
123 <mspace id="multi2postsup1" width="10px" height="5px" depth="5px" mathba ckground="black"/>
124 <mprescripts/>
125 <mspace id="multi2presub1" width="10px" height="5px" depth="5px" mathbac kground="black"/>
126 <mspace id="multi2presup1" width="10px" height="5px" depth="5px" mathbac kground="black"/>
127 </mmultiscripts>
128 <mmultiscripts id="multi3" mathbackground="green">
129 <mspace id="multi3base" width="30px" height="15px" depth="15px" mathback ground="black"/>
130 <mspace id="multi3postsub1" width="10px" height="5px" depth="5px" mathba ckground="black"/>
131 <mspace id="multi3postsup1" width="10px" height="5px" depth="5px" mathba ckground="black"/>
132 <mspace id="multi3postsub2" width="10px" height="5px" depth="5px" mathba ckground="black"/>
133 <mspace id="multi3postsup2" width="10px" height="5px" depth="5px" mathba ckground="black"/>
134 <mprescripts/>
135 <mspace id="multi3presub1" width="10px" height="5px" depth="5px" mathbac kground="black"/>
136 <mspace id="multi3presup1" width="10px" height="5px" depth="5px" mathbac kground="black"/>
137 <mspace id="multi3presub2" width="10px" height="5px" depth="5px" mathbac kground="black"/>
138 <mspace id="multi3presup2" width="10px" height="5px" depth="5px" mathbac kground="black"/>
139 </mmultiscripts>
140 <mmultiscripts id="multi4" mathbackground="green">
141 <mspace id="multi4base" width="30px" height="15px" depth="15px" mathback ground="black"/>
142 <mspace id="multi4postsub1" width="10px" height="5px" depth="5px" mathba ckground="black"/>
143 <mspace id="multi4postsup1" width="10px" height="5px" depth="5px" mathba ckground="black"/>
144 <mspace id="multi4postsub2" width="10px" height="5px" depth="5px" mathba ckground="black"/>
145 <mspace id="multi4postsup2" width="10px" height="5px" depth="5px" mathba ckground="black"/>
146 <mspace id="multi4postsub3" width="10px" height="5px" depth="5px" mathba ckground="black"/>
147 <mspace id="multi4postsup3" width="10px" height="5px" depth="5px" mathba ckground="black"/>
148 <mprescripts/>
149 <mspace id="multi4presub1" width="10px" height="5px" depth="5px" mathbac kground="black"/>
150 <mspace id="multi4presup1" width="10px" height="5px" depth="5px" mathbac kground="black"/>
151 <mspace id="multi4presub2" width="10px" height="5px" depth="5px" mathbac kground="black"/>
152 <mspace id="multi4presup2" width="10px" height="5px" depth="5px" mathbac kground="black"/>
153 <mspace id="multi4presub3" width="10px" height="5px" depth="5px" mathbac kground="black"/>
154 <mspace id="multi4presup3" width="10px" height="5px" depth="5px" mathbac kground="black"/>
155 </mmultiscripts>
156 <mmultiscripts id="multi5" mathbackground="green">
157 <mspace id="multi5base" width="30px" height="15px" depth="15px" mathback ground="black"/>
158 <mspace id="multi5postsub1" width="10px" height="5px" depth="5px" mathba ckground="black"/>
159 <mspace id="multi5postsup1" width="10px" height="5px" depth="5px" mathba ckground="black"/>
160 <mspace id="multi5postsub2" width="10px" height="5px" depth="5px" mathba ckground="black"/>
161 <mspace id="multi5postsup2" width="10px" height="5px" depth="5px" mathba ckground="black"/>
162 <mspace id="multi5postsub3" width="10px" height="5px" depth="5px" mathba ckground="black"/>
163 <mspace id="multi5postsup3" width="10px" height="5px" depth="5px" mathba ckground="black"/>
164 <mspace id="multi5postsub4" width="10px" height="5px" depth="5px" mathba ckground="black"/>
165 <mspace id="multi5postsup4" width="10px" height="5px" depth="5px" mathba ckground="black"/>
166 <mprescripts/>
167 <mspace id="multi5presub1" width="10px" height="5px" depth="5px" mathbac kground="black"/>
168 <mspace id="multi5presup1" width="10px" height="5px" depth="5px" mathbac kground="black"/>
169 <mspace id="multi5presub2" width="10px" height="5px" depth="5px" mathbac kground="black"/>
170 <mspace id="multi5presup2" width="10px" height="5px" depth="5px" mathbac kground="black"/>
171 <mspace id="multi5presub3" width="10px" height="5px" depth="5px" mathbac kground="black"/>
172 <mspace id="multi5presup3" width="10px" height="5px" depth="5px" mathbac kground="black"/>
173 <mspace id="multi5presub4" width="10px" height="5px" depth="5px" mathbac kground="black"/>
174 <mspace id="multi5presup4" width="10px" height="5px" depth="5px" mathbac kground="black"/>
175 </mmultiscripts>
176 </math>
177 </p>
178 <hr/>
179 </body>
180 </html>
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