This repository has been archived by the owner on Sep 13, 2022. It is now read-only.
forked from opentypejs/opentype.js
-
Notifications
You must be signed in to change notification settings - Fork 1
/
font-inspector.html
281 lines (237 loc) · 9.79 KB
/
font-inspector.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
<!DOCTYPE html>
<html>
<head>
<title>opentype.js font inspector</title>
<meta name="description" content="A JavaScript library to manipulate the letterforms of text from the browser or node.js.">
<meta charset="utf-8">
<link rel="stylesheet" href="site.css">
<script type="text/javascript" src="dist/opentype.js"></script>
</head>
<body>
<div class="header">
<div class="container">
<h1>opentype.js</h1>
<nav>
<a href="index.html">Home</a>
<a href="font-inspector.html">Font Inspector</a>
<a href="glyph-inspector.html">Glyph Inspector</a>
</nav>
<nav class="right">
<a class="github" href="https://github.com/opentypejs/opentype.js">Fork me on GitHub</a>
</nav>
</div>
</div>
<div class="container">
<div class="explain">
<h1>Font Inspector</h1>
<small>opentype.js is an OpenType and TrueType font parser. Here you can inspect the raw font metadata.</small>
</div>
<input id="file" type="file">
<span class="info" id="font-name">Roboto-Black</span>
<canvas id="preview" width="940" height="50" class="text"></canvas>
<div id="message"></div>
<hr>
<div id="font-data">
<h3 class="collapsed">Font Header table <a href="https://www.microsoft.com/typography/OTSPEC/head.htm" target="_blank">head</a></h3>
<dl id="head-table"><dt>Undefined</dt></dl>
<h3 class="collapsed">Horizontal Header table <a href="https://www.microsoft.com/typography/OTSPEC/hhea.htm" target="_blank">hhea</a></h3>
<dl id="hhea-table"><dt>Undefined</dt></dl>
<h3 class="collapsed">Maximum Profile table <a href="https://www.microsoft.com/typography/OTSPEC/maxp.htm" target="_blank">maxp</a></h3>
<dl id="maxp-table"><dt>Undefined</dt></dl>
<h3 class="collapsed">Naming table <a href="https://www.microsoft.com/typography/OTSPEC/name.htm" target="_blank">name</a></h3>
<dl id="name-table"><dt>Undefined</dt></dl>
<h3 class="collapsed">OS/2 and Windows Metrics table <a href="https://www.microsoft.com/typography/OTSPEC/os2.htm" target="_blank">OS/2</a></h3>
<dl id="os2-table"><dt>Undefined</dt></dl>
<h3 class="collapsed">PostScript table <a href="https://www.microsoft.com/typography/OTSPEC/post.htm" target="_blank">post</a></h3>
<dl id="post-table"><dt>Undefined</dt></dl>
<h3 class="collapsed">Character To Glyph Index Mapping Table <a href="https://www.microsoft.com/typography/OTSPEC/cmap.htm" target="_blank">cmap</a></h3>
<dl id="cmap-table"><dt>Undefined</dt></dl>
<h3 class="collapsed">Font Variations table <a href="https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6fvar.html" target="_blank">fvar</a></h3>
<dl id="fvar-table"><dt>Undefined</dt></dl>
<h3 class="collapsed">Metadata table <a href="https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6meta.html" target="_blank">meta</a></h3>
<dl id="meta-table"><dt>Undefined</dt></dl>
<h3 class="collapsed">Control Value Table <a href="https://www.microsoft.com/typography/OTSPEC/cvt.htm" target="_blank">cvt</a></h3>
<dl id="cvt-table"><dt>Undefined</dt></dl>
<h3 class="collapsed">CVT Program <a href="https://www.microsoft.com/typography/OTSPEC/prep.htm" target="_blank">prep</a></h3>
<dl id="prep-table"><dt>Undefined</dt></dl>
<h3 class="collapsed">Font program <a href="https://www.microsoft.com/typography/OTSPEC/fpgm.htm" target="_blank">fpgm</a></h3>
<dl id="fpgm-table"><dt>Undefined</dt></dl>
<h3 class="collapsed">Glyph Substitution Table <a href="https://www.microsoft.com/typography/OTSPEC/GSUB.htm" target="_blank">GSUB</a></h3>
<dl id="gsub-table"><dt>Undefined</dt></dl>
<h3 class="collapsed">Kerning <a href="https://www.microsoft.com/typography/otspec/kern.htm" target="_blank">kern</a></h3>
<dl id="kern-table"><dt>Undefined</dt></dl>
</div>
<hr>
<div class="explain">
<h1>Free Software</h1>
<p>opentype.js is available on <a href="https://github.com/opentypejs/opentype.js">GitHub</a> under the <a href="https://raw.github.com/opentypejs/opentype.js/master/LICENSE">MIT License</a>.</p>
<p>Copyright © 2020 Frederik De Bleser.</p>
</div>
<hr>
</div>
<script type="text/javascript">
var font = null;
var fontSize = 32;
var textToRender = 'Grumpy wizards make toxic brew for the evil Queen and Jack.';
var previewPath = null;
function escapeHtml(unsafe) {
return unsafe
.replace(/&/g, '&')
.replace(/</g, '<')
.replace(/>/g, '>')
.replace(/\u0022/g, '"')
.replace(/\u0027/g, ''');
}
function enableHighDPICanvas(canvas) {
if (typeof canvas === 'string') {
canvas = document.getElementById(canvas);
}
var pixelRatio = window.devicePixelRatio || 1;
if (pixelRatio === 1) return;
var oldWidth = canvas.width;
var oldHeight = canvas.height;
canvas.width = oldWidth * pixelRatio;
canvas.height = oldHeight * pixelRatio;
canvas.style.width = oldWidth + 'px';
canvas.style.height = oldHeight + 'px';
canvas.getContext('2d').scale(pixelRatio, pixelRatio);
}
function renderText() {
if (!font) return;
var previewCanvas = document.getElementById('preview');
var previewCtx = previewCanvas.getContext("2d");
previewCtx.clearRect(0, 0, previewCanvas.width, previewCanvas.height);
font.draw(previewCtx, textToRender, 0, 32, fontSize, {
kerning: true,
features: [
/**
* these 4 features are required to render Arabic text properly
* and shouldn't be turned off when rendering arabic text.
*/
{ script: 'arab', tags: ['init', 'medi', 'fina', 'rlig'] },
{ script: 'latn', tags: ['liga', 'rlig'] }
]
});
}
function showErrorMessage(message) {
var el = document.getElementById('message');
if (!message || message.trim().length === 0) {
el.style.display = 'none';
} else {
el.style.display = 'block';
}
el.innerHTML = message;
}
function sortKeys(dict) {
var keys = [];
for (var key in dict) {
keys.push(key);
}
keys.sort();
return keys;
}
function displayNames(names) {
var html = '';
properties = sortKeys(names);
for (var i = 0; i < properties.length; i++) {
var property = properties[i];
html += '<dt>'+escapeHtml(property)+'</dt><dd>';
var translations = names[property];
var langs = sortKeys(translations);
for (var j = 0; j < langs.length; j++) {
var lang = langs[j];
var esclang = escapeHtml(lang);
html += '<span class="langtag">' + esclang
+ '</span> <span class="langname" lang=' + esclang + '>'
+ escapeHtml(translations[lang]) + '</span> ';
}
html += '</dd>';
}
document.getElementById('name-table').innerHTML = html;
}
function displayFontData() {
var html, tablename, table, property, value;
for (tablename in font.tables) {
table = font.tables[tablename];
if (tablename == 'name') {
displayNames(table);
continue;
}
html = '';
for (property in table) {
value = table[property];
html += '<dt>'+property+'</dt><dd>';
if (Array.isArray(value) && typeof value[0] === 'object') {
html += value.map(function(item) {
return JSON.stringify(item);
}).join('<br>');
} else if (typeof value === 'object') {
html += JSON.stringify(value);
} else if (['created', 'modified'].indexOf(property) > -1) {
var date = new Date(value * 1000);
html += date;
}
else {
html += value;
}
html += '</dd>';
}
var element = document.getElementById(tablename+"-table");
if (element) {
element.innerHTML = html;
}
}
if(font.kerningPairs) {
var element = document.getElementById("kern-table");
if (element) {
element.innerHTML = '<dt>' + Object.keys(font.kerningPairs).length + ' Pairs</dt><dd>' + JSON.stringify(font.kerningPairs) + '</dd>';
}
}
}
function onFontLoaded(font) {
window.font = font;
renderText();
displayFontData();
}
function onReadFile(e) {
document.getElementById('font-name').innerHTML = '';
var file = e.target.files[0];
var reader = new FileReader();
reader.onload = function(e) {
try {
font = opentype.parse(e.target.result, {lowMemory:true});
onFontLoaded(font);
showErrorMessage('');
} catch (err) {
showErrorMessage(err.toString());
if (err.stack) console.log(err.stack);
throw(err);
}
};
reader.onerror = function(err) {
showErrorMessage(err.toString());
};
reader.readAsArrayBuffer(file);
}
var fontFileName = 'fonts/Roboto-Black.ttf';
document.getElementById('font-name').innerHTML = fontFileName.split('/')[1];
var fileButton = document.getElementById('file');
fileButton.addEventListener('change', onReadFile, false);
var tableHeaders = document.getElementById('font-data').getElementsByTagName('h3');
for(var i = tableHeaders.length; i--; ) {
tableHeaders[i].addEventListener('click', function(e) {
e.target.className = (e.target.className === 'collapsed') ? 'expanded' : 'collapsed';
}, false);
}
enableHighDPICanvas('preview');
opentype.load(fontFileName, function(err, font) {
var amount, glyph, ctx, x, y, fontSize;
if (err) {
showErrorMessage(err.toString());
return;
}
onFontLoaded(font);
}, {lowMemory:true});
</script>
</body>
</html>