{{ message }}
-
Notifications
You must be signed in to change notification settings - Fork 62
Expand file tree
/
Copy pathafm.html
More file actions
657 lines (546 loc) · 71.8 KB
/
Copy pathafm.html
File metadata and controls
657 lines (546 loc) · 71.8 KB
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
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="X-UA-Compatible" content="IE=Edge" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>matplotlib.afm — Matplotlib 3.4.1 documentation</title>
<link rel="stylesheet" href="../../_static/mpl.css?v3.4.1-3-gc6d08c6a8b-dirty" type="text/css" />
<link rel="stylesheet" href="../../_static/pygments.css" type="text/css" />
<link rel="stylesheet" type="text/css" href="../../_static/graphviz.css" />
<link rel="stylesheet" type="text/css" href="../../_static/plot_directive.css" />
<link rel="stylesheet" type="text/css" href="../../_static/copybutton.css" />
<link rel="stylesheet" type="text/css" href="../../_static/gallery.css" />
<link rel="stylesheet" type="text/css" href="../../_static/gallery-binder.css" />
<link rel="stylesheet" type="text/css" href="../../_static/gallery-dataframe.css" />
<script id="documentation_options" data-url_root="../../" src="../../_static/documentation_options.js"></script>
<script src="../../_static/jquery.js"></script>
<script src="../../_static/underscore.js"></script>
<script src="../../_static/doctools.js"></script>
<script src="../../_static/language_data.js"></script>
<script src="../../_static/clipboard.min.js"></script>
<script src="../../_static/copybutton.js"></script>
<script async="async" src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.7/latest.js?config=TeX-AMS-MML_HTMLorMML"></script>
<link rel="search" type="application/opensearchdescription+xml"
title="Search within Matplotlib 3.4.1 documentation"
href="../../_static/opensearch.xml"/>
<link rel="shortcut icon" href="../../_static/favicon.ico"/>
<link rel="index" title="Index" href="../../genindex.html" />
<link rel="search" title="Search" href="../../search.html" />
<link rel="top" title="Matplotlib 3.4.1 documentation" href="#" />
<link rel="canonical" href="https://matplotlib.org/3.4.3/_modules/matplotlib/afm.html" />
<link rel="stylesheet" href="../../_static/custom.css" type="text/css" />
<meta name="viewport" content="width=device-width, initial-scale=0.9, maximum-scale=0.9" />
<script data-domain="matplotlib.org" defer="defer" src="https://views.scientific-python.org/js/script.js"></script>
</head><body>
<div id="unreleased-message"> You are reading an old version of the documentation (v3.4.1). For the latest version see <a href="/stable/">https://matplotlib.org/stable/</a> </div>
<!--
<div id="annc-banner">
</div>
-->
<div style="background-color: white; text-align: left; padding: 10px 10px 15px 15px; position: relative;">
<a href="../../index.html">
<div style="float: left; position: absolute; width: 496px; bottom: 0; padding-bottom: 24px"><span style="float: right; color: #789; background: white">Version 3.4.1</span></div>
<img src="../../_static/logo2_compressed.svg" height="125px" border="0" alt="matplotlib"/></a>
<!-- The "Fork me on github" ribbon -->
<div id="forkongithub"><a href="https://github.com/matplotlib/matplotlib">Fork me on GitHub</a></div>
</div>
<nav class="main-nav">
<ul>
<li><a href="../../users/installing.html">Installation</a></li>
<li><a href="../../contents.html">Documentation</a></li>
<li><a href="../../gallery/index.html">Examples</a></li>
<li><a href="../../tutorials/index.html">Tutorials</a></li>
<li><a href="../../devel/index.html">Contributing</a></li>
<li class="nav-right">
<form class="search" action="../../search.html" method="get">
<input type="text" name="q" aria-labelledby="searchlabel" placeholder="Search"/>
</form>
</li>
</ul>
</nav>
<div class="related" role="navigation" aria-label="related navigation">
<h3>Navigation</h3>
<ul>
<li class="right" style="margin-right: 10px">
<a href="../../genindex.html" title="General Index"
accesskey="I">index</a></li>
<li class="right" >
<a href="../../py-modindex.html" title="Python Module Index"
>modules</a> |</li>
<li><a href="../../index.html">home</a>| </li>
<li><a href="../../contents.html">contents</a> »</li>
<li class="nav-item nav-item-1"><a href="../index.html" >Module code</a> »</li>
<li class="nav-item nav-item-2"><a href="../matplotlib.html" accesskey="U">matplotlib</a> »</li>
<li class="nav-item nav-item-this"><a href="">matplotlib.afm</a></li>
</ul>
</div>
<div class="sphinxsidebar" role="navigation" aria-label="main navigation">
<div class="sphinxsidebarwrapper">
</div>
</div>
<div class="document">
<div class="documentwrapper">
<div class="bodywrapper">
<div class="body" role="main">
<h1>Source code for matplotlib.afm</h1><div class="highlight"><pre>
<span></span><span class="sd">"""</span>
<span class="sd">A python interface to Adobe Font Metrics Files.</span>
<span class="sd">Although a number of other python implementations exist, and may be more</span>
<span class="sd">complete than this, it was decided not to go with them because they were</span>
<span class="sd">either:</span>
<span class="sd">1) copyrighted or used a non-BSD compatible license</span>
<span class="sd">2) had too many dependencies and a free standing lib was needed</span>
<span class="sd">3) did more than needed and it was easier to write afresh rather than</span>
<span class="sd"> figure out how to get just what was needed.</span>
<span class="sd">It is pretty easy to use, and has no external dependencies:</span>
<span class="sd">>>> import matplotlib as mpl</span>
<span class="sd">>>> from pathlib import Path</span>
<span class="sd">>>> afm_path = Path(mpl.get_data_path(), 'fonts', 'afm', 'ptmr8a.afm')</span>
<span class="sd">>>></span>
<span class="sd">>>> from matplotlib.afm import AFM</span>
<span class="sd">>>> with afm_path.open('rb') as fh:</span>
<span class="sd">... afm = AFM(fh)</span>
<span class="sd">>>> afm.string_width_height('What the heck?')</span>
<span class="sd">(6220.0, 694)</span>
<span class="sd">>>> afm.get_fontname()</span>
<span class="sd">'Times-Roman'</span>
<span class="sd">>>> afm.get_kern_dist('A', 'f')</span>
<span class="sd">0</span>
<span class="sd">>>> afm.get_kern_dist('A', 'y')</span>
<span class="sd">-92.0</span>
<span class="sd">>>> afm.get_bbox_char('!')</span>
<span class="sd">[130, -9, 238, 676]</span>
<span class="sd">As in the Adobe Font Metrics File Format Specification, all dimensions</span>
<span class="sd">are given in units of 1/1000 of the scale factor (point size) of the font</span>
<span class="sd">being used.</span>
<span class="sd">"""</span>
<span class="kn">from</span> <span class="nn">collections</span> <span class="kn">import</span> <span class="n">namedtuple</span>
<span class="kn">import</span> <span class="nn">logging</span>
<span class="kn">import</span> <span class="nn">re</span>
<span class="kn">from</span> <span class="nn">._mathtext_data</span> <span class="kn">import</span> <span class="n">uni2type1</span>
<span class="n">_log</span> <span class="o">=</span> <span class="n">logging</span><span class="o">.</span><span class="n">getLogger</span><span class="p">(</span><span class="vm">__name__</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">_to_int</span><span class="p">(</span><span class="n">x</span><span class="p">):</span>
<span class="c1"># Some AFM files have floats where we are expecting ints -- there is</span>
<span class="c1"># probably a better way to handle this (support floats, round rather than</span>
<span class="c1"># truncate). But I don't know what the best approach is now and this</span>
<span class="c1"># change to _to_int should at least prevent Matplotlib from crashing on</span>
<span class="c1"># these. JDH (2009-11-06)</span>
<span class="k">return</span> <span class="nb">int</span><span class="p">(</span><span class="nb">float</span><span class="p">(</span><span class="n">x</span><span class="p">))</span>
<span class="k">def</span> <span class="nf">_to_float</span><span class="p">(</span><span class="n">x</span><span class="p">):</span>
<span class="c1"># Some AFM files use "," instead of "." as decimal separator -- this</span>
<span class="c1"># shouldn't be ambiguous (unless someone is wicked enough to use "," as</span>
<span class="c1"># thousands separator...).</span>
<span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="nb">bytes</span><span class="p">):</span>
<span class="c1"># Encoding doesn't really matter -- if we have codepoints >127 the call</span>
<span class="c1"># to float() will error anyways.</span>
<span class="n">x</span> <span class="o">=</span> <span class="n">x</span><span class="o">.</span><span class="n">decode</span><span class="p">(</span><span class="s1">'latin-1'</span><span class="p">)</span>
<span class="k">return</span> <span class="nb">float</span><span class="p">(</span><span class="n">x</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s1">','</span><span class="p">,</span> <span class="s1">'.'</span><span class="p">))</span>
<span class="k">def</span> <span class="nf">_to_str</span><span class="p">(</span><span class="n">x</span><span class="p">):</span>
<span class="k">return</span> <span class="n">x</span><span class="o">.</span><span class="n">decode</span><span class="p">(</span><span class="s1">'utf8'</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">_to_list_of_ints</span><span class="p">(</span><span class="n">s</span><span class="p">):</span>
<span class="n">s</span> <span class="o">=</span> <span class="n">s</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="sa">b</span><span class="s1">','</span><span class="p">,</span> <span class="sa">b</span><span class="s1">' '</span><span class="p">)</span>
<span class="k">return</span> <span class="p">[</span><span class="n">_to_int</span><span class="p">(</span><span class="n">val</span><span class="p">)</span> <span class="k">for</span> <span class="n">val</span> <span class="ow">in</span> <span class="n">s</span><span class="o">.</span><span class="n">split</span><span class="p">()]</span>
<span class="k">def</span> <span class="nf">_to_list_of_floats</span><span class="p">(</span><span class="n">s</span><span class="p">):</span>
<span class="k">return</span> <span class="p">[</span><span class="n">_to_float</span><span class="p">(</span><span class="n">val</span><span class="p">)</span> <span class="k">for</span> <span class="n">val</span> <span class="ow">in</span> <span class="n">s</span><span class="o">.</span><span class="n">split</span><span class="p">()]</span>
<span class="k">def</span> <span class="nf">_to_bool</span><span class="p">(</span><span class="n">s</span><span class="p">):</span>
<span class="k">if</span> <span class="n">s</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span><span class="o">.</span><span class="n">strip</span><span class="p">()</span> <span class="ow">in</span> <span class="p">(</span><span class="sa">b</span><span class="s1">'false'</span><span class="p">,</span> <span class="sa">b</span><span class="s1">'0'</span><span class="p">,</span> <span class="sa">b</span><span class="s1">'no'</span><span class="p">):</span>
<span class="k">return</span> <span class="kc">False</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="kc">True</span>
<span class="k">def</span> <span class="nf">_parse_header</span><span class="p">(</span><span class="n">fh</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Read the font metrics header (up to the char metrics) and returns</span>
<span class="sd"> a dictionary mapping *key* to *val*. *val* will be converted to the</span>
<span class="sd"> appropriate python type as necessary; e.g.:</span>
<span class="sd"> * 'False'->False</span>
<span class="sd"> * '0'->0</span>
<span class="sd"> * '-168 -218 1000 898'-> [-168, -218, 1000, 898]</span>
<span class="sd"> Dictionary keys are</span>
<span class="sd"> StartFontMetrics, FontName, FullName, FamilyName, Weight,</span>
<span class="sd"> ItalicAngle, IsFixedPitch, FontBBox, UnderlinePosition,</span>
<span class="sd"> UnderlineThickness, Version, Notice, EncodingScheme, CapHeight,</span>
<span class="sd"> XHeight, Ascender, Descender, StartCharMetrics</span>
<span class="sd"> """</span>
<span class="n">header_converters</span> <span class="o">=</span> <span class="p">{</span>
<span class="sa">b</span><span class="s1">'StartFontMetrics'</span><span class="p">:</span> <span class="n">_to_float</span><span class="p">,</span>
<span class="sa">b</span><span class="s1">'FontName'</span><span class="p">:</span> <span class="n">_to_str</span><span class="p">,</span>
<span class="sa">b</span><span class="s1">'FullName'</span><span class="p">:</span> <span class="n">_to_str</span><span class="p">,</span>
<span class="sa">b</span><span class="s1">'FamilyName'</span><span class="p">:</span> <span class="n">_to_str</span><span class="p">,</span>
<span class="sa">b</span><span class="s1">'Weight'</span><span class="p">:</span> <span class="n">_to_str</span><span class="p">,</span>
<span class="sa">b</span><span class="s1">'ItalicAngle'</span><span class="p">:</span> <span class="n">_to_float</span><span class="p">,</span>
<span class="sa">b</span><span class="s1">'IsFixedPitch'</span><span class="p">:</span> <span class="n">_to_bool</span><span class="p">,</span>
<span class="sa">b</span><span class="s1">'FontBBox'</span><span class="p">:</span> <span class="n">_to_list_of_ints</span><span class="p">,</span>
<span class="sa">b</span><span class="s1">'UnderlinePosition'</span><span class="p">:</span> <span class="n">_to_float</span><span class="p">,</span>
<span class="sa">b</span><span class="s1">'UnderlineThickness'</span><span class="p">:</span> <span class="n">_to_float</span><span class="p">,</span>
<span class="sa">b</span><span class="s1">'Version'</span><span class="p">:</span> <span class="n">_to_str</span><span class="p">,</span>
<span class="c1"># Some AFM files have non-ASCII characters (which are not allowed by</span>
<span class="c1"># the spec). Given that there is actually no public API to even access</span>
<span class="c1"># this field, just return it as straight bytes.</span>
<span class="sa">b</span><span class="s1">'Notice'</span><span class="p">:</span> <span class="k">lambda</span> <span class="n">x</span><span class="p">:</span> <span class="n">x</span><span class="p">,</span>
<span class="sa">b</span><span class="s1">'EncodingScheme'</span><span class="p">:</span> <span class="n">_to_str</span><span class="p">,</span>
<span class="sa">b</span><span class="s1">'CapHeight'</span><span class="p">:</span> <span class="n">_to_float</span><span class="p">,</span> <span class="c1"># Is the second version a mistake, or</span>
<span class="sa">b</span><span class="s1">'Capheight'</span><span class="p">:</span> <span class="n">_to_float</span><span class="p">,</span> <span class="c1"># do some AFM files contain 'Capheight'? -JKS</span>
<span class="sa">b</span><span class="s1">'XHeight'</span><span class="p">:</span> <span class="n">_to_float</span><span class="p">,</span>
<span class="sa">b</span><span class="s1">'Ascender'</span><span class="p">:</span> <span class="n">_to_float</span><span class="p">,</span>
<span class="sa">b</span><span class="s1">'Descender'</span><span class="p">:</span> <span class="n">_to_float</span><span class="p">,</span>
<span class="sa">b</span><span class="s1">'StdHW'</span><span class="p">:</span> <span class="n">_to_float</span><span class="p">,</span>
<span class="sa">b</span><span class="s1">'StdVW'</span><span class="p">:</span> <span class="n">_to_float</span><span class="p">,</span>
<span class="sa">b</span><span class="s1">'StartCharMetrics'</span><span class="p">:</span> <span class="n">_to_int</span><span class="p">,</span>
<span class="sa">b</span><span class="s1">'CharacterSet'</span><span class="p">:</span> <span class="n">_to_str</span><span class="p">,</span>
<span class="sa">b</span><span class="s1">'Characters'</span><span class="p">:</span> <span class="n">_to_int</span><span class="p">,</span>
<span class="p">}</span>
<span class="n">d</span> <span class="o">=</span> <span class="p">{}</span>
<span class="n">first_line</span> <span class="o">=</span> <span class="kc">True</span>
<span class="k">for</span> <span class="n">line</span> <span class="ow">in</span> <span class="n">fh</span><span class="p">:</span>
<span class="n">line</span> <span class="o">=</span> <span class="n">line</span><span class="o">.</span><span class="n">rstrip</span><span class="p">()</span>
<span class="k">if</span> <span class="n">line</span><span class="o">.</span><span class="n">startswith</span><span class="p">(</span><span class="sa">b</span><span class="s1">'Comment'</span><span class="p">):</span>
<span class="k">continue</span>
<span class="n">lst</span> <span class="o">=</span> <span class="n">line</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="sa">b</span><span class="s1">' '</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
<span class="n">key</span> <span class="o">=</span> <span class="n">lst</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
<span class="k">if</span> <span class="n">first_line</span><span class="p">:</span>
<span class="c1"># AFM spec, Section 4: The StartFontMetrics keyword</span>
<span class="c1"># [followed by a version number] must be the first line in</span>
<span class="c1"># the file, and the EndFontMetrics keyword must be the</span>
<span class="c1"># last non-empty line in the file. We just check the</span>
<span class="c1"># first header entry.</span>
<span class="k">if</span> <span class="n">key</span> <span class="o">!=</span> <span class="sa">b</span><span class="s1">'StartFontMetrics'</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">(</span><span class="s1">'Not an AFM file'</span><span class="p">)</span>
<span class="n">first_line</span> <span class="o">=</span> <span class="kc">False</span>
<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">lst</span><span class="p">)</span> <span class="o">==</span> <span class="mi">2</span><span class="p">:</span>
<span class="n">val</span> <span class="o">=</span> <span class="n">lst</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">val</span> <span class="o">=</span> <span class="sa">b</span><span class="s1">''</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">converter</span> <span class="o">=</span> <span class="n">header_converters</span><span class="p">[</span><span class="n">key</span><span class="p">]</span>
<span class="k">except</span> <span class="ne">KeyError</span><span class="p">:</span>
<span class="n">_log</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="s1">'Found an unknown keyword in AFM header (was </span><span class="si">%r</span><span class="s1">)'</span> <span class="o">%</span> <span class="n">key</span><span class="p">)</span>
<span class="k">continue</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">d</span><span class="p">[</span><span class="n">key</span><span class="p">]</span> <span class="o">=</span> <span class="n">converter</span><span class="p">(</span><span class="n">val</span><span class="p">)</span>
<span class="k">except</span> <span class="ne">ValueError</span><span class="p">:</span>
<span class="n">_log</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="s1">'Value error parsing header in AFM: </span><span class="si">%s</span><span class="s1">, </span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span> <span class="n">key</span><span class="p">,</span> <span class="n">val</span><span class="p">)</span>
<span class="k">continue</span>
<span class="k">if</span> <span class="n">key</span> <span class="o">==</span> <span class="sa">b</span><span class="s1">'StartCharMetrics'</span><span class="p">:</span>
<span class="k">break</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">(</span><span class="s1">'Bad parse'</span><span class="p">)</span>
<span class="k">return</span> <span class="n">d</span>
<span class="n">CharMetrics</span> <span class="o">=</span> <span class="n">namedtuple</span><span class="p">(</span><span class="s1">'CharMetrics'</span><span class="p">,</span> <span class="s1">'width, name, bbox'</span><span class="p">)</span>
<span class="n">CharMetrics</span><span class="o">.</span><span class="vm">__doc__</span> <span class="o">=</span> <span class="s2">"""</span>
<span class="s2"> Represents the character metrics of a single character.</span>
<span class="s2"> Notes</span>
<span class="s2"> -----</span>
<span class="s2"> The fields do currently only describe a subset of character metrics</span>
<span class="s2"> information defined in the AFM standard.</span>
<span class="s2"> """</span>
<span class="n">CharMetrics</span><span class="o">.</span><span class="n">width</span><span class="o">.</span><span class="vm">__doc__</span> <span class="o">=</span> <span class="s2">"""The character width (WX)."""</span>
<span class="n">CharMetrics</span><span class="o">.</span><span class="n">name</span><span class="o">.</span><span class="vm">__doc__</span> <span class="o">=</span> <span class="s2">"""The character name (N)."""</span>
<span class="n">CharMetrics</span><span class="o">.</span><span class="n">bbox</span><span class="o">.</span><span class="vm">__doc__</span> <span class="o">=</span> <span class="s2">"""</span>
<span class="s2"> The bbox of the character (B) as a tuple (*llx*, *lly*, *urx*, *ury*)."""</span>
<span class="k">def</span> <span class="nf">_parse_char_metrics</span><span class="p">(</span><span class="n">fh</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Parse the given filehandle for character metrics information and return</span>
<span class="sd"> the information as dicts.</span>
<span class="sd"> It is assumed that the file cursor is on the line behind</span>
<span class="sd"> 'StartCharMetrics'.</span>
<span class="sd"> Returns</span>
<span class="sd"> -------</span>
<span class="sd"> ascii_d : dict</span>
<span class="sd"> A mapping "ASCII num of the character" to `.CharMetrics`.</span>
<span class="sd"> name_d : dict</span>
<span class="sd"> A mapping "character name" to `.CharMetrics`.</span>
<span class="sd"> Notes</span>
<span class="sd"> -----</span>
<span class="sd"> This function is incomplete per the standard, but thus far parses</span>
<span class="sd"> all the sample afm files tried.</span>
<span class="sd"> """</span>
<span class="n">required_keys</span> <span class="o">=</span> <span class="p">{</span><span class="s1">'C'</span><span class="p">,</span> <span class="s1">'WX'</span><span class="p">,</span> <span class="s1">'N'</span><span class="p">,</span> <span class="s1">'B'</span><span class="p">}</span>
<span class="n">ascii_d</span> <span class="o">=</span> <span class="p">{}</span>
<span class="n">name_d</span> <span class="o">=</span> <span class="p">{}</span>
<span class="k">for</span> <span class="n">line</span> <span class="ow">in</span> <span class="n">fh</span><span class="p">:</span>
<span class="c1"># We are defensively letting values be utf8. The spec requires</span>
<span class="c1"># ascii, but there are non-compliant fonts in circulation</span>
<span class="n">line</span> <span class="o">=</span> <span class="n">_to_str</span><span class="p">(</span><span class="n">line</span><span class="o">.</span><span class="n">rstrip</span><span class="p">())</span> <span class="c1"># Convert from byte-literal</span>
<span class="k">if</span> <span class="n">line</span><span class="o">.</span><span class="n">startswith</span><span class="p">(</span><span class="s1">'EndCharMetrics'</span><span class="p">):</span>
<span class="k">return</span> <span class="n">ascii_d</span><span class="p">,</span> <span class="n">name_d</span>
<span class="c1"># Split the metric line into a dictionary, keyed by metric identifiers</span>
<span class="n">vals</span> <span class="o">=</span> <span class="nb">dict</span><span class="p">(</span><span class="n">s</span><span class="o">.</span><span class="n">strip</span><span class="p">()</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s1">' '</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span> <span class="k">for</span> <span class="n">s</span> <span class="ow">in</span> <span class="n">line</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s1">';'</span><span class="p">)</span> <span class="k">if</span> <span class="n">s</span><span class="p">)</span>
<span class="c1"># There may be other metrics present, but only these are needed</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">required_keys</span><span class="o">.</span><span class="n">issubset</span><span class="p">(</span><span class="n">vals</span><span class="p">):</span>
<span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">(</span><span class="s1">'Bad char metrics line: </span><span class="si">%s</span><span class="s1">'</span> <span class="o">%</span> <span class="n">line</span><span class="p">)</span>
<span class="n">num</span> <span class="o">=</span> <span class="n">_to_int</span><span class="p">(</span><span class="n">vals</span><span class="p">[</span><span class="s1">'C'</span><span class="p">])</span>
<span class="n">wx</span> <span class="o">=</span> <span class="n">_to_float</span><span class="p">(</span><span class="n">vals</span><span class="p">[</span><span class="s1">'WX'</span><span class="p">])</span>
<span class="n">name</span> <span class="o">=</span> <span class="n">vals</span><span class="p">[</span><span class="s1">'N'</span><span class="p">]</span>
<span class="n">bbox</span> <span class="o">=</span> <span class="n">_to_list_of_floats</span><span class="p">(</span><span class="n">vals</span><span class="p">[</span><span class="s1">'B'</span><span class="p">])</span>
<span class="n">bbox</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="nb">map</span><span class="p">(</span><span class="nb">int</span><span class="p">,</span> <span class="n">bbox</span><span class="p">))</span>
<span class="n">metrics</span> <span class="o">=</span> <span class="n">CharMetrics</span><span class="p">(</span><span class="n">wx</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">bbox</span><span class="p">)</span>
<span class="c1"># Workaround: If the character name is 'Euro', give it the</span>
<span class="c1"># corresponding character code, according to WinAnsiEncoding (see PDF</span>
<span class="c1"># Reference).</span>
<span class="k">if</span> <span class="n">name</span> <span class="o">==</span> <span class="s1">'Euro'</span><span class="p">:</span>
<span class="n">num</span> <span class="o">=</span> <span class="mi">128</span>
<span class="k">elif</span> <span class="n">name</span> <span class="o">==</span> <span class="s1">'minus'</span><span class="p">:</span>
<span class="n">num</span> <span class="o">=</span> <span class="nb">ord</span><span class="p">(</span><span class="s2">"</span><span class="se">\N{MINUS SIGN}</span><span class="s2">"</span><span class="p">)</span> <span class="c1"># 0x2212</span>
<span class="k">if</span> <span class="n">num</span> <span class="o">!=</span> <span class="o">-</span><span class="mi">1</span><span class="p">:</span>
<span class="n">ascii_d</span><span class="p">[</span><span class="n">num</span><span class="p">]</span> <span class="o">=</span> <span class="n">metrics</span>
<span class="n">name_d</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="n">metrics</span>
<span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">(</span><span class="s1">'Bad parse'</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">_parse_kern_pairs</span><span class="p">(</span><span class="n">fh</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Return a kern pairs dictionary; keys are (*char1*, *char2*) tuples and</span>
<span class="sd"> values are the kern pair value. For example, a kern pairs line like</span>
<span class="sd"> ``KPX A y -50``</span>
<span class="sd"> will be represented as::</span>
<span class="sd"> d[ ('A', 'y') ] = -50</span>
<span class="sd"> """</span>
<span class="n">line</span> <span class="o">=</span> <span class="nb">next</span><span class="p">(</span><span class="n">fh</span><span class="p">)</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">line</span><span class="o">.</span><span class="n">startswith</span><span class="p">(</span><span class="sa">b</span><span class="s1">'StartKernPairs'</span><span class="p">):</span>
<span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">(</span><span class="s1">'Bad start of kern pairs data: </span><span class="si">%s</span><span class="s1">'</span> <span class="o">%</span> <span class="n">line</span><span class="p">)</span>
<span class="n">d</span> <span class="o">=</span> <span class="p">{}</span>
<span class="k">for</span> <span class="n">line</span> <span class="ow">in</span> <span class="n">fh</span><span class="p">:</span>
<span class="n">line</span> <span class="o">=</span> <span class="n">line</span><span class="o">.</span><span class="n">rstrip</span><span class="p">()</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">line</span><span class="p">:</span>
<span class="k">continue</span>
<span class="k">if</span> <span class="n">line</span><span class="o">.</span><span class="n">startswith</span><span class="p">(</span><span class="sa">b</span><span class="s1">'EndKernPairs'</span><span class="p">):</span>
<span class="nb">next</span><span class="p">(</span><span class="n">fh</span><span class="p">)</span> <span class="c1"># EndKernData</span>
<span class="k">return</span> <span class="n">d</span>
<span class="n">vals</span> <span class="o">=</span> <span class="n">line</span><span class="o">.</span><span class="n">split</span><span class="p">()</span>
<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">vals</span><span class="p">)</span> <span class="o">!=</span> <span class="mi">4</span> <span class="ow">or</span> <span class="n">vals</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">!=</span> <span class="sa">b</span><span class="s1">'KPX'</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">(</span><span class="s1">'Bad kern pairs line: </span><span class="si">%s</span><span class="s1">'</span> <span class="o">%</span> <span class="n">line</span><span class="p">)</span>
<span class="n">c1</span><span class="p">,</span> <span class="n">c2</span><span class="p">,</span> <span class="n">val</span> <span class="o">=</span> <span class="n">_to_str</span><span class="p">(</span><span class="n">vals</span><span class="p">[</span><span class="mi">1</span><span class="p">]),</span> <span class="n">_to_str</span><span class="p">(</span><span class="n">vals</span><span class="p">[</span><span class="mi">2</span><span class="p">]),</span> <span class="n">_to_float</span><span class="p">(</span><span class="n">vals</span><span class="p">[</span><span class="mi">3</span><span class="p">])</span>
<span class="n">d</span><span class="p">[(</span><span class="n">c1</span><span class="p">,</span> <span class="n">c2</span><span class="p">)]</span> <span class="o">=</span> <span class="n">val</span>
<span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">(</span><span class="s1">'Bad kern pairs parse'</span><span class="p">)</span>
<span class="n">CompositePart</span> <span class="o">=</span> <span class="n">namedtuple</span><span class="p">(</span><span class="s1">'CompositePart'</span><span class="p">,</span> <span class="s1">'name, dx, dy'</span><span class="p">)</span>
<span class="n">CompositePart</span><span class="o">.</span><span class="vm">__doc__</span> <span class="o">=</span> <span class="s2">"""</span>
<span class="s2"> Represents the information on a composite element of a composite char."""</span>
<span class="n">CompositePart</span><span class="o">.</span><span class="n">name</span><span class="o">.</span><span class="vm">__doc__</span> <span class="o">=</span> <span class="s2">"""Name of the part, e.g. 'acute'."""</span>
<span class="n">CompositePart</span><span class="o">.</span><span class="n">dx</span><span class="o">.</span><span class="vm">__doc__</span> <span class="o">=</span> <span class="s2">"""x-displacement of the part from the origin."""</span>
<span class="n">CompositePart</span><span class="o">.</span><span class="n">dy</span><span class="o">.</span><span class="vm">__doc__</span> <span class="o">=</span> <span class="s2">"""y-displacement of the part from the origin."""</span>
<span class="k">def</span> <span class="nf">_parse_composites</span><span class="p">(</span><span class="n">fh</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Parse the given filehandle for composites information return them as a</span>
<span class="sd"> dict.</span>
<span class="sd"> It is assumed that the file cursor is on the line behind 'StartComposites'.</span>
<span class="sd"> Returns</span>
<span class="sd"> -------</span>
<span class="sd"> dict</span>
<span class="sd"> A dict mapping composite character names to a parts list. The parts</span>
<span class="sd"> list is a list of `.CompositePart` entries describing the parts of</span>
<span class="sd"> the composite.</span>
<span class="sd"> Examples</span>
<span class="sd"> --------</span>
<span class="sd"> A composite definition line::</span>
<span class="sd"> CC Aacute 2 ; PCC A 0 0 ; PCC acute 160 170 ;</span>
<span class="sd"> will be represented as::</span>
<span class="sd"> composites['Aacute'] = [CompositePart(name='A', dx=0, dy=0),</span>
<span class="sd"> CompositePart(name='acute', dx=160, dy=170)]</span>
<span class="sd"> """</span>
<span class="n">composites</span> <span class="o">=</span> <span class="p">{}</span>
<span class="k">for</span> <span class="n">line</span> <span class="ow">in</span> <span class="n">fh</span><span class="p">:</span>
<span class="n">line</span> <span class="o">=</span> <span class="n">line</span><span class="o">.</span><span class="n">rstrip</span><span class="p">()</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">line</span><span class="p">:</span>
<span class="k">continue</span>
<span class="k">if</span> <span class="n">line</span><span class="o">.</span><span class="n">startswith</span><span class="p">(</span><span class="sa">b</span><span class="s1">'EndComposites'</span><span class="p">):</span>
<span class="k">return</span> <span class="n">composites</span>
<span class="n">vals</span> <span class="o">=</span> <span class="n">line</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="sa">b</span><span class="s1">';'</span><span class="p">)</span>
<span class="n">cc</span> <span class="o">=</span> <span class="n">vals</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">split</span><span class="p">()</span>
<span class="n">name</span><span class="p">,</span> <span class="n">numParts</span> <span class="o">=</span> <span class="n">cc</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="n">_to_int</span><span class="p">(</span><span class="n">cc</span><span class="p">[</span><span class="mi">2</span><span class="p">])</span>
<span class="n">pccParts</span> <span class="o">=</span> <span class="p">[]</span>
<span class="k">for</span> <span class="n">s</span> <span class="ow">in</span> <span class="n">vals</span><span class="p">[</span><span class="mi">1</span><span class="p">:</span><span class="o">-</span><span class="mi">1</span><span class="p">]:</span>
<span class="n">pcc</span> <span class="o">=</span> <span class="n">s</span><span class="o">.</span><span class="n">split</span><span class="p">()</span>
<span class="n">part</span> <span class="o">=</span> <span class="n">CompositePart</span><span class="p">(</span><span class="n">pcc</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="n">_to_float</span><span class="p">(</span><span class="n">pcc</span><span class="p">[</span><span class="mi">2</span><span class="p">]),</span> <span class="n">_to_float</span><span class="p">(</span><span class="n">pcc</span><span class="p">[</span><span class="mi">3</span><span class="p">]))</span>
<span class="n">pccParts</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">part</span><span class="p">)</span>
<span class="n">composites</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="n">pccParts</span>
<span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">(</span><span class="s1">'Bad composites parse'</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">_parse_optional</span><span class="p">(</span><span class="n">fh</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Parse the optional fields for kern pair data and composites.</span>
<span class="sd"> Returns</span>
<span class="sd"> -------</span>
<span class="sd"> kern_data : dict</span>
<span class="sd"> A dict containing kerning information. May be empty.</span>
<span class="sd"> See `._parse_kern_pairs`.</span>
<span class="sd"> composites : dict</span>
<span class="sd"> A dict containing composite information. May be empty.</span>
<span class="sd"> See `._parse_composites`.</span>
<span class="sd"> """</span>
<span class="n">optional</span> <span class="o">=</span> <span class="p">{</span>
<span class="sa">b</span><span class="s1">'StartKernData'</span><span class="p">:</span> <span class="n">_parse_kern_pairs</span><span class="p">,</span>
<span class="sa">b</span><span class="s1">'StartComposites'</span><span class="p">:</span> <span class="n">_parse_composites</span><span class="p">,</span>
<span class="p">}</span>
<span class="n">d</span> <span class="o">=</span> <span class="p">{</span><span class="sa">b</span><span class="s1">'StartKernData'</span><span class="p">:</span> <span class="p">{},</span>
<span class="sa">b</span><span class="s1">'StartComposites'</span><span class="p">:</span> <span class="p">{}}</span>
<span class="k">for</span> <span class="n">line</span> <span class="ow">in</span> <span class="n">fh</span><span class="p">:</span>
<span class="n">line</span> <span class="o">=</span> <span class="n">line</span><span class="o">.</span><span class="n">rstrip</span><span class="p">()</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">line</span><span class="p">:</span>
<span class="k">continue</span>
<span class="n">key</span> <span class="o">=</span> <span class="n">line</span><span class="o">.</span><span class="n">split</span><span class="p">()[</span><span class="mi">0</span><span class="p">]</span>
<span class="k">if</span> <span class="n">key</span> <span class="ow">in</span> <span class="n">optional</span><span class="p">:</span>
<span class="n">d</span><span class="p">[</span><span class="n">key</span><span class="p">]</span> <span class="o">=</span> <span class="n">optional</span><span class="p">[</span><span class="n">key</span><span class="p">](</span><span class="n">fh</span><span class="p">)</span>
<span class="k">return</span> <span class="n">d</span><span class="p">[</span><span class="sa">b</span><span class="s1">'StartKernData'</span><span class="p">],</span> <span class="n">d</span><span class="p">[</span><span class="sa">b</span><span class="s1">'StartComposites'</span><span class="p">]</span>
<div class="viewcode-block" id="AFM"><a class="viewcode-back" href="../../api/afm_api.html#matplotlib.afm.AFM">[docs]</a><span class="k">class</span> <span class="nc">AFM</span><span class="p">:</span>
<span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">fh</span><span class="p">):</span>
<span class="sd">"""Parse the AFM file in file object *fh*."""</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_header</span> <span class="o">=</span> <span class="n">_parse_header</span><span class="p">(</span><span class="n">fh</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_metrics</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_metrics_by_name</span> <span class="o">=</span> <span class="n">_parse_char_metrics</span><span class="p">(</span><span class="n">fh</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_kern</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_composite</span> <span class="o">=</span> <span class="n">_parse_optional</span><span class="p">(</span><span class="n">fh</span><span class="p">)</span>
<div class="viewcode-block" id="AFM.get_bbox_char"><a class="viewcode-back" href="../../api/afm_api.html#matplotlib.afm.AFM.get_bbox_char">[docs]</a> <span class="k">def</span> <span class="nf">get_bbox_char</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">c</span><span class="p">,</span> <span class="n">isord</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">isord</span><span class="p">:</span>
<span class="n">c</span> <span class="o">=</span> <span class="nb">ord</span><span class="p">(</span><span class="n">c</span><span class="p">)</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_metrics</span><span class="p">[</span><span class="n">c</span><span class="p">]</span><span class="o">.</span><span class="n">bbox</span></div>
<div class="viewcode-block" id="AFM.string_width_height"><a class="viewcode-back" href="../../api/afm_api.html#matplotlib.afm.AFM.string_width_height">[docs]</a> <span class="k">def</span> <span class="nf">string_width_height</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">s</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Return the string width (including kerning) and string height</span>
<span class="sd"> as a (*w*, *h*) tuple.</span>
<span class="sd"> """</span>
<span class="k">if</span> <span class="ow">not</span> <span class="nb">len</span><span class="p">(</span><span class="n">s</span><span class="p">):</span>
<span class="k">return</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">0</span>
<span class="n">total_width</span> <span class="o">=</span> <span class="mi">0</span>
<span class="n">namelast</span> <span class="o">=</span> <span class="kc">None</span>
<span class="n">miny</span> <span class="o">=</span> <span class="mf">1e9</span>
<span class="n">maxy</span> <span class="o">=</span> <span class="mi">0</span>
<span class="k">for</span> <span class="n">c</span> <span class="ow">in</span> <span class="n">s</span><span class="p">:</span>
<span class="k">if</span> <span class="n">c</span> <span class="o">==</span> <span class="s1">'</span><span class="se">\n</span><span class="s1">'</span><span class="p">:</span>
<span class="k">continue</span>
<span class="n">wx</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">bbox</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_metrics</span><span class="p">[</span><span class="nb">ord</span><span class="p">(</span><span class="n">c</span><span class="p">)]</span>
<span class="n">total_width</span> <span class="o">+=</span> <span class="n">wx</span> <span class="o">+</span> <span class="bp">self</span><span class="o">.</span><span class="n">_kern</span><span class="o">.</span><span class="n">get</span><span class="p">((</span><span class="n">namelast</span><span class="p">,</span> <span class="n">name</span><span class="p">),</span> <span class="mi">0</span><span class="p">)</span>
<span class="n">l</span><span class="p">,</span> <span class="n">b</span><span class="p">,</span> <span class="n">w</span><span class="p">,</span> <span class="n">h</span> <span class="o">=</span> <span class="n">bbox</span>
<span class="n">miny</span> <span class="o">=</span> <span class="nb">min</span><span class="p">(</span><span class="n">miny</span><span class="p">,</span> <span class="n">b</span><span class="p">)</span>
<span class="n">maxy</span> <span class="o">=</span> <span class="nb">max</span><span class="p">(</span><span class="n">maxy</span><span class="p">,</span> <span class="n">b</span> <span class="o">+</span> <span class="n">h</span><span class="p">)</span>
<span class="n">namelast</span> <span class="o">=</span> <span class="n">name</span>
<span class="k">return</span> <span class="n">total_width</span><span class="p">,</span> <span class="n">maxy</span> <span class="o">-</span> <span class="n">miny</span></div>
<div class="viewcode-block" id="AFM.get_str_bbox_and_descent"><a class="viewcode-back" href="../../api/afm_api.html#matplotlib.afm.AFM.get_str_bbox_and_descent">[docs]</a> <span class="k">def</span> <span class="nf">get_str_bbox_and_descent</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">s</span><span class="p">):</span>
<span class="sd">"""Return the string bounding box and the maximal descent."""</span>
<span class="k">if</span> <span class="ow">not</span> <span class="nb">len</span><span class="p">(</span><span class="n">s</span><span class="p">):</span>
<span class="k">return</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">0</span>
<span class="n">total_width</span> <span class="o">=</span> <span class="mi">0</span>
<span class="n">namelast</span> <span class="o">=</span> <span class="kc">None</span>
<span class="n">miny</span> <span class="o">=</span> <span class="mf">1e9</span>
<span class="n">maxy</span> <span class="o">=</span> <span class="mi">0</span>
<span class="n">left</span> <span class="o">=</span> <span class="mi">0</span>
<span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">s</span><span class="p">,</span> <span class="nb">str</span><span class="p">):</span>
<span class="n">s</span> <span class="o">=</span> <span class="n">_to_str</span><span class="p">(</span><span class="n">s</span><span class="p">)</span>
<span class="k">for</span> <span class="n">c</span> <span class="ow">in</span> <span class="n">s</span><span class="p">:</span>
<span class="k">if</span> <span class="n">c</span> <span class="o">==</span> <span class="s1">'</span><span class="se">\n</span><span class="s1">'</span><span class="p">:</span>
<span class="k">continue</span>
<span class="n">name</span> <span class="o">=</span> <span class="n">uni2type1</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="nb">ord</span><span class="p">(</span><span class="n">c</span><span class="p">),</span> <span class="sa">f</span><span class="s2">"uni</span><span class="si">{</span><span class="nb">ord</span><span class="p">(</span><span class="n">c</span><span class="p">)</span><span class="si">:</span><span class="s2">04X</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">wx</span><span class="p">,</span> <span class="n">_</span><span class="p">,</span> <span class="n">bbox</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_metrics_by_name</span><span class="p">[</span><span class="n">name</span><span class="p">]</span>
<span class="k">except</span> <span class="ne">KeyError</span><span class="p">:</span>
<span class="n">name</span> <span class="o">=</span> <span class="s1">'question'</span>
<span class="n">wx</span><span class="p">,</span> <span class="n">_</span><span class="p">,</span> <span class="n">bbox</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_metrics_by_name</span><span class="p">[</span><span class="n">name</span><span class="p">]</span>
<span class="n">total_width</span> <span class="o">+=</span> <span class="n">wx</span> <span class="o">+</span> <span class="bp">self</span><span class="o">.</span><span class="n">_kern</span><span class="o">.</span><span class="n">get</span><span class="p">((</span><span class="n">namelast</span><span class="p">,</span> <span class="n">name</span><span class="p">),</span> <span class="mi">0</span><span class="p">)</span>
<span class="n">l</span><span class="p">,</span> <span class="n">b</span><span class="p">,</span> <span class="n">w</span><span class="p">,</span> <span class="n">h</span> <span class="o">=</span> <span class="n">bbox</span>
<span class="n">left</span> <span class="o">=</span> <span class="nb">min</span><span class="p">(</span><span class="n">left</span><span class="p">,</span> <span class="n">l</span><span class="p">)</span>
<span class="n">miny</span> <span class="o">=</span> <span class="nb">min</span><span class="p">(</span><span class="n">miny</span><span class="p">,</span> <span class="n">b</span><span class="p">)</span>
<span class="n">maxy</span> <span class="o">=</span> <span class="nb">max</span><span class="p">(</span><span class="n">maxy</span><span class="p">,</span> <span class="n">b</span> <span class="o">+</span> <span class="n">h</span><span class="p">)</span>
<span class="n">namelast</span> <span class="o">=</span> <span class="n">name</span>
<span class="k">return</span> <span class="n">left</span><span class="p">,</span> <span class="n">miny</span><span class="p">,</span> <span class="n">total_width</span><span class="p">,</span> <span class="n">maxy</span> <span class="o">-</span> <span class="n">miny</span><span class="p">,</span> <span class="o">-</span><span class="n">miny</span></div>
<div class="viewcode-block" id="AFM.get_str_bbox"><a class="viewcode-back" href="../../api/afm_api.html#matplotlib.afm.AFM.get_str_bbox">[docs]</a> <span class="k">def</span> <span class="nf">get_str_bbox</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">s</span><span class="p">):</span>
<span class="sd">"""Return the string bounding box."""</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_str_bbox_and_descent</span><span class="p">(</span><span class="n">s</span><span class="p">)[:</span><span class="mi">4</span><span class="p">]</span></div>
<div class="viewcode-block" id="AFM.get_name_char"><a class="viewcode-back" href="../../api/afm_api.html#matplotlib.afm.AFM.get_name_char">[docs]</a> <span class="k">def</span> <span class="nf">get_name_char</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">c</span><span class="p">,</span> <span class="n">isord</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span>
<span class="sd">"""Get the name of the character, i.e., ';' is 'semicolon'."""</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">isord</span><span class="p">:</span>
<span class="n">c</span> <span class="o">=</span> <span class="nb">ord</span><span class="p">(</span><span class="n">c</span><span class="p">)</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_metrics</span><span class="p">[</span><span class="n">c</span><span class="p">]</span><span class="o">.</span><span class="n">name</span></div>
<div class="viewcode-block" id="AFM.get_width_char"><a class="viewcode-back" href="../../api/afm_api.html#matplotlib.afm.AFM.get_width_char">[docs]</a> <span class="k">def</span> <span class="nf">get_width_char</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">c</span><span class="p">,</span> <span class="n">isord</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Get the width of the character from the character metric WX field.</span>
<span class="sd"> """</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">isord</span><span class="p">:</span>
<span class="n">c</span> <span class="o">=</span> <span class="nb">ord</span><span class="p">(</span><span class="n">c</span><span class="p">)</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_metrics</span><span class="p">[</span><span class="n">c</span><span class="p">]</span><span class="o">.</span><span class="n">width</span></div>
<div class="viewcode-block" id="AFM.get_width_from_char_name"><a class="viewcode-back" href="../../api/afm_api.html#matplotlib.afm.AFM.get_width_from_char_name">[docs]</a> <span class="k">def</span> <span class="nf">get_width_from_char_name</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">):</span>
<span class="sd">"""Get the width of the character from a type1 character name."""</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_metrics_by_name</span><span class="p">[</span><span class="n">name</span><span class="p">]</span><span class="o">.</span><span class="n">width</span></div>
<div class="viewcode-block" id="AFM.get_height_char"><a class="viewcode-back" href="../../api/afm_api.html#matplotlib.afm.AFM.get_height_char">[docs]</a> <span class="k">def</span> <span class="nf">get_height_char</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">c</span><span class="p">,</span> <span class="n">isord</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span>
<span class="sd">"""Get the bounding box (ink) height of character *c* (space is 0)."""</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">isord</span><span class="p">:</span>
<span class="n">c</span> <span class="o">=</span> <span class="nb">ord</span><span class="p">(</span><span class="n">c</span><span class="p">)</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_metrics</span><span class="p">[</span><span class="n">c</span><span class="p">]</span><span class="o">.</span><span class="n">bbox</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span></div>
<div class="viewcode-block" id="AFM.get_kern_dist"><a class="viewcode-back" href="../../api/afm_api.html#matplotlib.afm.AFM.get_kern_dist">[docs]</a> <span class="k">def</span> <span class="nf">get_kern_dist</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">c1</span><span class="p">,</span> <span class="n">c2</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Return the kerning pair distance (possibly 0) for chars *c1* and *c2*.</span>
<span class="sd"> """</span>
<span class="n">name1</span><span class="p">,</span> <span class="n">name2</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_name_char</span><span class="p">(</span><span class="n">c1</span><span class="p">),</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_name_char</span><span class="p">(</span><span class="n">c2</span><span class="p">)</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_kern_dist_from_name</span><span class="p">(</span><span class="n">name1</span><span class="p">,</span> <span class="n">name2</span><span class="p">)</span></div>
<div class="viewcode-block" id="AFM.get_kern_dist_from_name"><a class="viewcode-back" href="../../api/afm_api.html#matplotlib.afm.AFM.get_kern_dist_from_name">[docs]</a> <span class="k">def</span> <span class="nf">get_kern_dist_from_name</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name1</span><span class="p">,</span> <span class="n">name2</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Return the kerning pair distance (possibly 0) for chars</span>
<span class="sd"> *name1* and *name2*.</span>
<span class="sd"> """</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_kern</span><span class="o">.</span><span class="n">get</span><span class="p">((</span><span class="n">name1</span><span class="p">,</span> <span class="n">name2</span><span class="p">),</span> <span class="mi">0</span><span class="p">)</span></div>
<div class="viewcode-block" id="AFM.get_fontname"><a class="viewcode-back" href="../../api/afm_api.html#matplotlib.afm.AFM.get_fontname">[docs]</a> <span class="k">def</span> <span class="nf">get_fontname</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""Return the font name, e.g., 'Times-Roman'."""</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_header</span><span class="p">[</span><span class="sa">b</span><span class="s1">'FontName'</span><span class="p">]</span></div>
<span class="nd">@property</span>
<span class="k">def</span> <span class="nf">postscript_name</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> <span class="c1"># For consistency with FT2Font.</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_fontname</span><span class="p">()</span>
<div class="viewcode-block" id="AFM.get_fullname"><a class="viewcode-back" href="../../api/afm_api.html#matplotlib.afm.AFM.get_fullname">[docs]</a> <span class="k">def</span> <span class="nf">get_fullname</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""Return the font full name, e.g., 'Times-Roman'."""</span>
<span class="n">name</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_header</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="sa">b</span><span class="s1">'FullName'</span><span class="p">)</span>
<span class="k">if</span> <span class="n">name</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> <span class="c1"># use FontName as a substitute</span>
<span class="n">name</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_header</span><span class="p">[</span><span class="sa">b</span><span class="s1">'FontName'</span><span class="p">]</span>
<span class="k">return</span> <span class="n">name</span></div>
<div class="viewcode-block" id="AFM.get_familyname"><a class="viewcode-back" href="../../api/afm_api.html#matplotlib.afm.AFM.get_familyname">[docs]</a> <span class="k">def</span> <span class="nf">get_familyname</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""Return the font family name, e.g., 'Times'."""</span>
<span class="n">name</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_header</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="sa">b</span><span class="s1">'FamilyName'</span><span class="p">)</span>
<span class="k">if</span> <span class="n">name</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">return</span> <span class="n">name</span>
<span class="c1"># FamilyName not specified so we'll make a guess</span>
<span class="n">name</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_fullname</span><span class="p">()</span>
<span class="n">extras</span> <span class="o">=</span> <span class="p">(</span><span class="sa">r</span><span class="s1">'(?i)([ -](regular|plain|italic|oblique|bold|semibold|'</span>
<span class="sa">r</span><span class="s1">'light|ultralight|extra|condensed))+$'</span><span class="p">)</span>
<span class="k">return</span> <span class="n">re</span><span class="o">.</span><span class="n">sub</span><span class="p">(</span><span class="n">extras</span><span class="p">,</span> <span class="s1">''</span><span class="p">,</span> <span class="n">name</span><span class="p">)</span></div>
<span class="nd">@property</span>
<span class="k">def</span> <span class="nf">family_name</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""The font family name, e.g., 'Times'."""</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_familyname</span><span class="p">()</span>
<div class="viewcode-block" id="AFM.get_weight"><a class="viewcode-back" href="../../api/afm_api.html#matplotlib.afm.AFM.get_weight">[docs]</a> <span class="k">def</span> <span class="nf">get_weight</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""Return the font weight, e.g., 'Bold' or 'Roman'."""</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_header</span><span class="p">[</span><span class="sa">b</span><span class="s1">'Weight'</span><span class="p">]</span></div>
<div class="viewcode-block" id="AFM.get_angle"><a class="viewcode-back" href="../../api/afm_api.html#matplotlib.afm.AFM.get_angle">[docs]</a> <span class="k">def</span> <span class="nf">get_angle</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""Return the fontangle as float."""</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_header</span><span class="p">[</span><span class="sa">b</span><span class="s1">'ItalicAngle'</span><span class="p">]</span></div>
<div class="viewcode-block" id="AFM.get_capheight"><a class="viewcode-back" href="../../api/afm_api.html#matplotlib.afm.AFM.get_capheight">[docs]</a> <span class="k">def</span> <span class="nf">get_capheight</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""Return the cap height as float."""</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_header</span><span class="p">[</span><span class="sa">b</span><span class="s1">'CapHeight'</span><span class="p">]</span></div>
<div class="viewcode-block" id="AFM.get_xheight"><a class="viewcode-back" href="../../api/afm_api.html#matplotlib.afm.AFM.get_xheight">[docs]</a> <span class="k">def</span> <span class="nf">get_xheight</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""Return the xheight as float."""</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_header</span><span class="p">[</span><span class="sa">b</span><span class="s1">'XHeight'</span><span class="p">]</span></div>
<div class="viewcode-block" id="AFM.get_underline_thickness"><a class="viewcode-back" href="../../api/afm_api.html#matplotlib.afm.AFM.get_underline_thickness">[docs]</a> <span class="k">def</span> <span class="nf">get_underline_thickness</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""Return the underline thickness as float."""</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_header</span><span class="p">[</span><span class="sa">b</span><span class="s1">'UnderlineThickness'</span><span class="p">]</span></div>
<div class="viewcode-block" id="AFM.get_horizontal_stem_width"><a class="viewcode-back" href="../../api/afm_api.html#matplotlib.afm.AFM.get_horizontal_stem_width">[docs]</a> <span class="k">def</span> <span class="nf">get_horizontal_stem_width</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Return the standard horizontal stem width as float, or *None* if</span>
<span class="sd"> not specified in AFM file.</span>
<span class="sd"> """</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_header</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="sa">b</span><span class="s1">'StdHW'</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span></div>
<div class="viewcode-block" id="AFM.get_vertical_stem_width"><a class="viewcode-back" href="../../api/afm_api.html#matplotlib.afm.AFM.get_vertical_stem_width">[docs]</a> <span class="k">def</span> <span class="nf">get_vertical_stem_width</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Return the standard vertical stem width as float, or *None* if</span>
<span class="sd"> not specified in AFM file.</span>
<span class="sd"> """</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_header</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="sa">b</span><span class="s1">'StdVW'</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span></div></div>
</pre></div>
</div>
</div>
</div>
<div class="clearer"></div>
</div>
<footer>
<div class="footer">
© Copyright 2002 - 2012 John Hunter, Darren Dale, Eric Firing, Michael Droettboom and the Matplotlib development team; 2012 - 2021 The Matplotlib development team.
<br />
Last updated on Mar 31, 2021.
Created using
<a href="http://sphinx-doc.org/">Sphinx</a> 3.2.1.
Doc version v3.4.1-3-gc6d08c6a8b-dirty.
</div>
</footer>
</body>
</html>
You can’t perform that action at this time.