forked from matplotlib/matplotlib
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathtext.py
More file actions
2296 lines (1884 loc) · 78.2 KB
/
text.py
File metadata and controls
2296 lines (1884 loc) · 78.2 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
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
"""
Classes for including text in a figure.
"""
from __future__ import (absolute_import, division, print_function,
unicode_literals)
from matplotlib.externals import six
from matplotlib.externals.six.moves import zip
import math
import warnings
import contextlib
import numpy as np
from matplotlib import cbook
from matplotlib import rcParams
import matplotlib.artist as artist
from matplotlib.artist import Artist
from matplotlib.cbook import is_string_like, maxdict
from matplotlib import docstring
from matplotlib.font_manager import FontProperties
from matplotlib.patches import FancyBboxPatch
from matplotlib.patches import FancyArrowPatch, Rectangle
import matplotlib.transforms as mtransforms
from matplotlib.transforms import Affine2D, Bbox, Transform
from matplotlib.transforms import BboxBase, BboxTransformTo
from matplotlib.lines import Line2D
from matplotlib.path import Path
from matplotlib.artist import allow_rasterization
from matplotlib.backend_bases import RendererBase
from matplotlib.textpath import TextPath
def _process_text_args(override, fontdict=None, **kwargs):
"Return an override dict. See :func:`~pyplot.text' docstring for info"
if fontdict is not None:
override.update(fontdict)
override.update(kwargs)
return override
@contextlib.contextmanager
def _wrap_text(textobj):
"""
Temporarily inserts newlines to the text if the wrap option is enabled.
"""
if textobj.get_wrap():
old_text = textobj.get_text()
try:
textobj.set_text(textobj._get_wrapped_text())
yield textobj
finally:
textobj.set_text(old_text)
else:
yield textobj
# Extracted from Text's method to serve as a function
def get_rotation(rotation):
"""
Return the text angle as float. The returned
angle is between 0 and 360 deg.
*rotation* may be 'horizontal', 'vertical', or a numeric value in degrees.
"""
try:
angle = float(rotation)
except (ValueError, TypeError):
isString = isinstance(rotation, six.string_types)
if ((isString and rotation == 'horizontal') or rotation is None):
angle = 0.
elif (isString and rotation == 'vertical'):
angle = 90.
else:
raise ValueError("rotation is {0} expected either 'horizontal'"
" 'vertical', numeric value or"
"None".format(rotation))
return angle % 360
# these are not available for the object inspector until after the
# class is build so we define an initial set here for the init
# function and they will be overridden after object defn
docstring.interpd.update(Text="""
========================== ================================================
Property Value
========================== ================================================
alpha float or None
animated [True | False]
backgroundcolor any matplotlib color
bbox rectangle prop dict plus key 'pad' which is a
pad in points; if a boxstyle is supplied as
a string, then pad is instead a fraction
of the font size
clip_box a matplotlib.transform.Bbox instance
clip_on [True | False]
color any matplotlib color
family ['serif' | 'sans-serif' | 'cursive' |
'fantasy' | 'monospace']
figure a matplotlib.figure.Figure instance
fontproperties a matplotlib.font_manager.FontProperties
instance
horizontalalignment or ha ['center' | 'right' | 'left']
label any string
linespacing float
lod [True | False]
multialignment ['left' | 'right' | 'center' ]
name or fontname string e.g.,
['Sans' | 'Courier' | 'Helvetica' ...]
position (x,y)
rotation [ angle in degrees 'vertical' | 'horizontal'
rotation_mode [ None | 'anchor']
size or fontsize [size in points | relative size e.g., 'smaller',
'x-large']
style or fontstyle [ 'normal' | 'italic' | 'oblique']
text string
transform a matplotlib.transform transformation instance
usetex [True | False | None]
variant ['normal' | 'small-caps']
verticalalignment or va ['center' | 'top' | 'bottom' | 'baseline' |
'center_baseline' ]
visible [True | False]
weight or fontweight ['normal' | 'bold' | 'heavy' | 'light' |
'ultrabold' | 'ultralight']
wrap [True | False]
x float
y float
zorder any number
========================== ===============================================
""")
# TODO : This function may move into the Text class as a method. As a
# matter of fact, The information from the _get_textbox function
# should be available during the Text._get_layout() call, which is
# called within the _get_textbox. So, it would better to move this
# function as a method with some refactoring of _get_layout method.
def _get_textbox(text, renderer):
"""
Calculate the bounding box of the text. Unlike
:meth:`matplotlib.text.Text.get_extents` method, The bbox size of
the text before the rotation is calculated.
"""
projected_xs = []
projected_ys = []
theta = np.deg2rad(text.get_rotation())
tr = mtransforms.Affine2D().rotate(-theta)
_, parts, d = text._get_layout(renderer)
for t, wh, x, y in parts:
w, h = wh
xt1, yt1 = tr.transform_point((x, y))
yt1 -= d
xt2, yt2 = xt1 + w, yt1 + h
projected_xs.extend([xt1, xt2])
projected_ys.extend([yt1, yt2])
xt_box, yt_box = min(projected_xs), min(projected_ys)
w_box, h_box = max(projected_xs) - xt_box, max(projected_ys) - yt_box
tr = mtransforms.Affine2D().rotate(theta)
x_box, y_box = tr.transform_point((xt_box, yt_box))
return x_box, y_box, w_box, h_box
class Text(Artist):
"""
Handle storing and drawing of text in window or data coordinates.
"""
zorder = 3
_cached = maxdict(50)
def __repr__(self):
return "Text(%g,%g,%s)" % (self._x, self._y, repr(self._text))
def __init__(self,
x=0, y=0, text='',
color=None, # defaults to rc params
verticalalignment='baseline',
horizontalalignment='left',
multialignment=None,
fontproperties=None, # defaults to FontProperties()
rotation=None,
linespacing=None,
rotation_mode=None,
usetex=None, # defaults to rcParams['text.usetex']
wrap=False,
**kwargs
):
"""
Create a :class:`~matplotlib.text.Text` instance at *x*, *y*
with string *text*.
Valid kwargs are
%(Text)s
"""
Artist.__init__(self)
self._x, self._y = x, y
if color is None:
color = rcParams['text.color']
if fontproperties is None:
fontproperties = FontProperties()
elif is_string_like(fontproperties):
fontproperties = FontProperties(fontproperties)
self.set_text(text)
self.set_color(color)
self.set_usetex(usetex)
self.set_wrap(wrap)
self._verticalalignment = verticalalignment
self._horizontalalignment = horizontalalignment
self._multialignment = multialignment
self._rotation = rotation
self._fontproperties = fontproperties
self._bbox_patch = None # a FancyBboxPatch instance
self._renderer = None
if linespacing is None:
linespacing = 1.2 # Maybe use rcParam later.
self._linespacing = linespacing
self.set_rotation_mode(rotation_mode)
self.update(kwargs)
def update(self, kwargs):
"""
Update properties from a dictionary.
"""
bbox = kwargs.pop('bbox', None)
super(Text, self).update(kwargs)
if bbox:
self.set_bbox(bbox) # depends on font properties
def __getstate__(self):
d = super(Text, self).__getstate__()
# remove the cached _renderer (if it exists)
d['_renderer'] = None
return d
def contains(self, mouseevent):
"""Test whether the mouse event occurred in the patch.
In the case of text, a hit is true anywhere in the
axis-aligned bounding-box containing the text.
Returns True or False.
"""
if six.callable(self._contains):
return self._contains(self, mouseevent)
if not self.get_visible() or self._renderer is None:
return False, {}
l, b, w, h = self.get_window_extent().bounds
r, t = l + w, b + h
x, y = mouseevent.x, mouseevent.y
inside = (l <= x <= r and b <= y <= t)
cattr = {}
# if the text has a surrounding patch, also check containment for it,
# and merge the results with the results for the text.
if self._bbox_patch:
patch_inside, patch_cattr = self._bbox_patch.contains(mouseevent)
inside = inside or patch_inside
cattr["bbox_patch"] = patch_cattr
return inside, cattr
def _get_xy_display(self):
'get the (possibly unit converted) transformed x, y in display coords'
x, y = self.get_unitless_position()
return self.get_transform().transform_point((x, y))
def _get_multialignment(self):
if self._multialignment is not None:
return self._multialignment
else:
return self._horizontalalignment
def get_rotation(self):
'return the text angle as float in degrees'
return get_rotation(self._rotation) # string_or_number -> number
def set_rotation_mode(self, m):
"""
set text rotation mode. If "anchor", the un-rotated text
will first aligned according to their *ha* and
*va*, and then will be rotated with the alignement
reference point as a origin. If None (default), the text will be
rotated first then will be aligned.
"""
if m is None or m in ["anchor", "default"]:
self._rotation_mode = m
else:
raise ValueError("Unknown rotation_mode : %s" % repr(m))
self.stale = True
def get_rotation_mode(self):
"get text rotation mode"
return self._rotation_mode
def update_from(self, other):
'Copy properties from other to self'
Artist.update_from(self, other)
self._color = other._color
self._multialignment = other._multialignment
self._verticalalignment = other._verticalalignment
self._horizontalalignment = other._horizontalalignment
self._fontproperties = other._fontproperties.copy()
self._rotation = other._rotation
self._picker = other._picker
self._linespacing = other._linespacing
self.stale = True
def _get_layout(self, renderer):
"""
return the extent (bbox) of the text together with
multiple-alignment information. Note that it returns an extent
of a rotated text when necessary.
"""
key = self.get_prop_tup()
if key in self._cached:
return self._cached[key]
horizLayout = []
thisx, thisy = 0.0, 0.0
xmin, ymin = 0.0, 0.0
width, height = 0.0, 0.0
lines = self.get_text().split('\n')
whs = np.zeros((len(lines), 2))
horizLayout = np.zeros((len(lines), 4))
# Find full vertical extent of font,
# including ascenders and descenders:
tmp, lp_h, lp_bl = renderer.get_text_width_height_descent('lp',
self._fontproperties,
ismath=False)
offsety = (lp_h - lp_bl) * self._linespacing
baseline = 0
for i, line in enumerate(lines):
clean_line, ismath = self.is_math_text(line)
if clean_line:
w, h, d = renderer.get_text_width_height_descent(clean_line,
self._fontproperties,
ismath=ismath)
else:
w, h, d = 0, 0, 0
# For multiline text, increase the line spacing when the
# text net-height(excluding baseline) is larger than that
# of a "l" (e.g., use of superscripts), which seems
# what TeX does.
h = max(h, lp_h)
d = max(d, lp_bl)
whs[i] = w, h
baseline = (h - d) - thisy
thisy -= max(offsety, (h - d) * self._linespacing)
horizLayout[i] = thisx, thisy, w, h
thisy -= d
width = max(width, w)
descent = d
ymin = horizLayout[-1][1]
ymax = horizLayout[0][1] + horizLayout[0][3]
height = ymax - ymin
xmax = xmin + width
# get the rotation matrix
M = Affine2D().rotate_deg(self.get_rotation())
offsetLayout = np.zeros((len(lines), 2))
offsetLayout[:] = horizLayout[:, 0:2]
# now offset the individual text lines within the box
if len(lines) > 1: # do the multiline aligment
malign = self._get_multialignment()
if malign == 'center':
offsetLayout[:, 0] += width / 2.0 - horizLayout[:, 2] / 2.0
elif malign == 'right':
offsetLayout[:, 0] += width - horizLayout[:, 2]
# the corners of the unrotated bounding box
cornersHoriz = np.array(
[(xmin, ymin), (xmin, ymax), (xmax, ymax), (xmax, ymin)],
np.float_)
cornersHoriz[:, 1] -= descent
# now rotate the bbox
cornersRotated = M.transform(cornersHoriz)
txs = cornersRotated[:, 0]
tys = cornersRotated[:, 1]
# compute the bounds of the rotated box
xmin, xmax = txs.min(), txs.max()
ymin, ymax = tys.min(), tys.max()
width = xmax - xmin
height = ymax - ymin
# Now move the box to the target position offset the display
# bbox by alignment
halign = self._horizontalalignment
valign = self._verticalalignment
rotation_mode = self.get_rotation_mode()
if rotation_mode != "anchor":
# compute the text location in display coords and the offsets
# necessary to align the bbox with that location
if halign == 'center':
offsetx = (xmin + width / 2.0)
elif halign == 'right':
offsetx = (xmin + width)
else:
offsetx = xmin
if valign == 'center':
offsety = (ymin + height / 2.0)
elif valign == 'top':
offsety = (ymin + height)
elif valign == 'baseline':
offsety = (ymin + height) - baseline
elif valign == 'center_baseline':
offsety = ymin + height - baseline / 2.0
else:
offsety = ymin
else:
xmin1, ymin1 = cornersHoriz[0]
xmax1, ymax1 = cornersHoriz[2]
if halign == 'center':
offsetx = (xmin1 + xmax1) / 2.0
elif halign == 'right':
offsetx = xmax1
else:
offsetx = xmin1
if valign == 'center':
offsety = (ymin1 + ymax1) / 2.0
elif valign == 'top':
offsety = ymax1
elif valign == 'baseline':
offsety = ymax1 - baseline
elif valign == 'center_baseline':
offsety = (ymin1 + ymax1 - baseline) / 2.0
else:
offsety = ymin1
offsetx, offsety = M.transform_point((offsetx, offsety))
xmin -= offsetx
ymin -= offsety
bbox = Bbox.from_bounds(xmin, ymin, width, height)
# now rotate the positions around the first x,y position
xys = M.transform(offsetLayout)
xys -= (offsetx, offsety)
xs, ys = xys[:, 0], xys[:, 1]
ret = bbox, list(zip(lines, whs, xs, ys)), descent
self._cached[key] = ret
return ret
def set_bbox(self, rectprops):
"""
Draw a bounding box around self. rectprops are any settable
properties for a FancyBboxPatch, e.g., facecolor='red', alpha=0.5.
t.set_bbox(dict(facecolor='red', alpha=0.5))
The default boxstyle is 'square'. The mutation
scale of the FancyBboxPatch is set to the fontsize.
ACCEPTS: FancyBboxPatch prop dict
"""
if rectprops is not None:
props = rectprops.copy()
boxstyle = props.pop("boxstyle", None)
pad = props.pop("pad", None)
if boxstyle is None:
boxstyle = "square"
if pad is None:
pad = 4 # points
pad /= self.get_size() # to fraction of font size
else:
if pad is None:
pad = 0.3
# boxstyle could be a callable or a string
if is_string_like(boxstyle) and "pad" not in boxstyle:
boxstyle += ",pad=%0.2f" % pad
bbox_transmuter = props.pop("bbox_transmuter", None)
self._bbox_patch = FancyBboxPatch(
(0., 0.),
1., 1.,
boxstyle=boxstyle,
bbox_transmuter=bbox_transmuter,
transform=mtransforms.IdentityTransform(),
**props)
else:
self._bbox_patch = None
self._update_clip_properties()
def get_bbox_patch(self):
"""
Return the bbox Patch object. Returns None if the
FancyBboxPatch is not made.
"""
return self._bbox_patch
def update_bbox_position_size(self, renderer):
"""
Update the location and the size of the bbox. This method
should be used when the position and size of the bbox needs to
be updated before actually drawing the bbox.
"""
if self._bbox_patch:
trans = self.get_transform()
# don't use self.get_unitless_position here, which refers to text
# position in Text, and dash position in TextWithDash:
posx = float(self.convert_xunits(self._x))
posy = float(self.convert_yunits(self._y))
posx, posy = trans.transform_point((posx, posy))
x_box, y_box, w_box, h_box = _get_textbox(self, renderer)
self._bbox_patch.set_bounds(0., 0., w_box, h_box)
theta = np.deg2rad(self.get_rotation())
tr = mtransforms.Affine2D().rotate(theta)
tr = tr.translate(posx + x_box, posy + y_box)
self._bbox_patch.set_transform(tr)
fontsize_in_pixel = renderer.points_to_pixels(self.get_size())
self._bbox_patch.set_mutation_scale(fontsize_in_pixel)
def _draw_bbox(self, renderer, posx, posy):
""" Update the location and the size of the bbox
(FancyBboxPatch), and draw
"""
x_box, y_box, w_box, h_box = _get_textbox(self, renderer)
self._bbox_patch.set_bounds(0., 0., w_box, h_box)
theta = np.deg2rad(self.get_rotation())
tr = mtransforms.Affine2D().rotate(theta)
tr = tr.translate(posx + x_box, posy + y_box)
self._bbox_patch.set_transform(tr)
fontsize_in_pixel = renderer.points_to_pixels(self.get_size())
self._bbox_patch.set_mutation_scale(fontsize_in_pixel)
self._bbox_patch.draw(renderer)
def _update_clip_properties(self):
clipprops = dict(clip_box=self.clipbox,
clip_path=self._clippath,
clip_on=self._clipon)
if self._bbox_patch:
bbox = self._bbox_patch.update(clipprops)
def set_clip_box(self, clipbox):
"""
Set the artist's clip :class:`~matplotlib.transforms.Bbox`.
ACCEPTS: a :class:`matplotlib.transforms.Bbox` instance
"""
super(Text, self).set_clip_box(clipbox)
self._update_clip_properties()
def set_clip_path(self, path, transform=None):
"""
Set the artist's clip path, which may be:
* a :class:`~matplotlib.patches.Patch` (or subclass) instance
* a :class:`~matplotlib.path.Path` instance, in which case
an optional :class:`~matplotlib.transforms.Transform`
instance may be provided, which will be applied to the
path before using it for clipping.
* *None*, to remove the clipping path
For efficiency, if the path happens to be an axis-aligned
rectangle, this method will set the clipping box to the
corresponding rectangle and set the clipping path to *None*.
ACCEPTS: [ (:class:`~matplotlib.path.Path`,
:class:`~matplotlib.transforms.Transform`) |
:class:`~matplotlib.patches.Patch` | None ]
"""
super(Text, self).set_clip_path(path, transform)
self._update_clip_properties()
def set_clip_on(self, b):
"""
Set whether artist uses clipping.
When False artists will be visible out side of the axes which
can lead to unexpected results.
ACCEPTS: [True | False]
"""
super(Text, self).set_clip_on(b)
self._update_clip_properties()
def get_wrap(self):
"""
Returns the wrapping state for the text.
"""
return self._wrap
def set_wrap(self, wrap):
"""
Sets the wrapping state for the text.
"""
self._wrap = wrap
def _get_wrap_line_width(self):
"""
Returns the maximum line width for wrapping text based on the
current orientation.
"""
x0, y0 = self.get_transform().transform(self.get_position())
figure_box = self.get_figure().get_window_extent()
# Calculate available width based on text alignment
alignment = self.get_horizontalalignment()
self.set_rotation_mode('anchor')
rotation = self.get_rotation()
left = self._get_dist_to_box(rotation, x0, y0, figure_box)
right = self._get_dist_to_box(
(180 + rotation) % 360,
x0,
y0,
figure_box)
if alignment == 'left':
line_width = left
elif alignment == 'right':
line_width = right
else:
line_width = 2 * min(left, right)
return line_width
def _get_dist_to_box(self, rotation, x0, y0, figure_box):
"""
Returns the distance from the given points, to the boundaries
of a rotated box in pixels.
"""
if rotation > 270:
quad = rotation - 270
h1 = y0 / math.cos(math.radians(quad))
h2 = (figure_box.x1 - x0) / math.cos(math.radians(90 - quad))
elif rotation > 180:
quad = rotation - 180
h1 = x0 / math.cos(math.radians(quad))
h2 = y0 / math.cos(math.radians(90 - quad))
elif rotation > 90:
quad = rotation - 90
h1 = (figure_box.y1 - y0) / math.cos(math.radians(quad))
h2 = x0 / math.cos(math.radians(90 - quad))
else:
h1 = (figure_box.x1 - x0) / math.cos(math.radians(rotation))
h2 = (figure_box.y1 - y0) / math.cos(math.radians(90 - rotation))
return min(h1, h2)
def _get_rendered_text_width(self, text):
"""
Returns the width of a given text string, in pixels.
"""
w, h, d = self._renderer.get_text_width_height_descent(
text,
self.get_fontproperties(),
False)
return math.ceil(w)
def _get_wrapped_text(self):
"""
Return a copy of the text with new lines added, so that
the text is wrapped relative to the parent figure.
"""
# Not fit to handle breaking up latex syntax correctly, so
# ignore latex for now.
if self.get_usetex():
return self.get_text()
# Build the line incrementally, for a more accurate measure of length
line_width = self._get_wrap_line_width()
wrapped_str = ""
line = ""
for word in self.get_text().split(' '):
# New lines in the user's test need to force a split, so that it's
# not using the longest current line width in the line being built
sub_words = word.split('\n')
for i in range(len(sub_words)):
current_width = self._get_rendered_text_width(
line + ' ' + sub_words[i])
# Split long lines, and each newline found in the current word
if current_width > line_width or i > 0:
wrapped_str += line + '\n'
line = ""
if line == "":
line = sub_words[i]
else:
line += ' ' + sub_words[i]
return wrapped_str + line
@allow_rasterization
def draw(self, renderer):
"""
Draws the :class:`Text` object to the given *renderer*.
"""
if renderer is not None:
self._renderer = renderer
if not self.get_visible():
return
if self.get_text() == '':
return
renderer.open_group('text', self.get_gid())
with _wrap_text(self) as textobj:
bbox, info, descent = textobj._get_layout(renderer)
trans = textobj.get_transform()
# don't use textobj.get_position here, which refers to text
# position in Text, and dash position in TextWithDash:
posx = float(textobj.convert_xunits(textobj._x))
posy = float(textobj.convert_yunits(textobj._y))
if not np.isfinite(posx) or not np.isfinite(posy):
raise ValueError("posx and posy should be finite values")
posx, posy = trans.transform_point((posx, posy))
canvasw, canvash = renderer.get_canvas_width_height()
# draw the FancyBboxPatch
if textobj._bbox_patch:
textobj._draw_bbox(renderer, posx, posy)
gc = renderer.new_gc()
gc.set_foreground(textobj.get_color())
gc.set_alpha(textobj.get_alpha())
gc.set_url(textobj._url)
textobj._set_gc_clip(gc)
angle = textobj.get_rotation()
for line, wh, x, y in info:
mtext = textobj if len(info) == 1 else None
x = x + posx
y = y + posy
if renderer.flipy():
y = canvash - y
clean_line, ismath = textobj.is_math_text(line)
if textobj.get_path_effects():
from matplotlib.patheffects import PathEffectRenderer
textrenderer = PathEffectRenderer(
textobj.get_path_effects(), renderer)
else:
textrenderer = renderer
if textobj.get_usetex():
textrenderer.draw_tex(gc, x, y, clean_line,
textobj._fontproperties, angle,
mtext=mtext)
else:
textrenderer.draw_text(gc, x, y, clean_line,
textobj._fontproperties, angle,
ismath=ismath, mtext=mtext)
gc.restore()
renderer.close_group('text')
self.stale = False
def get_color(self):
"Return the color of the text"
return self._color
def get_fontproperties(self):
"Return the :class:`~font_manager.FontProperties` object"
return self._fontproperties
def get_font_properties(self):
'alias for get_fontproperties'
return self.get_fontproperties()
def get_family(self):
"Return the list of font families used for font lookup"
return self._fontproperties.get_family()
def get_fontfamily(self):
'alias for get_family'
return self.get_family()
def get_name(self):
"Return the font name as string"
return self._fontproperties.get_name()
def get_style(self):
"Return the font style as string"
return self._fontproperties.get_style()
def get_size(self):
"Return the font size as integer"
return self._fontproperties.get_size_in_points()
def get_variant(self):
"Return the font variant as a string"
return self._fontproperties.get_variant()
def get_fontvariant(self):
'alias for get_variant'
return self.get_variant()
def get_weight(self):
"Get the font weight as string or number"
return self._fontproperties.get_weight()
def get_fontname(self):
'alias for get_name'
return self.get_name()
def get_fontstyle(self):
'alias for get_style'
return self.get_style()
def get_fontsize(self):
'alias for get_size'
return self.get_size()
def get_fontweight(self):
'alias for get_weight'
return self.get_weight()
def get_stretch(self):
'Get the font stretch as a string or number'
return self._fontproperties.get_stretch()
def get_fontstretch(self):
'alias for get_stretch'
return self.get_stretch()
def get_ha(self):
'alias for get_horizontalalignment'
return self.get_horizontalalignment()
def get_horizontalalignment(self):
"""
Return the horizontal alignment as string. Will be one of
'left', 'center' or 'right'.
"""
return self._horizontalalignment
def get_unitless_position(self):
"Return the unitless position of the text as a tuple (*x*, *y*)"
# This will get the position with all unit information stripped away.
# This is here for convienience since it is done in several locations.
x = float(self.convert_xunits(self._x))
y = float(self.convert_yunits(self._y))
return x, y
def get_position(self):
"Return the position of the text as a tuple (*x*, *y*)"
# This should return the same data (possible unitized) as was
# specified with 'set_x' and 'set_y'.
return self._x, self._y
def get_prop_tup(self):
"""
Return a hashable tuple of properties.
Not intended to be human readable, but useful for backends who
want to cache derived information about text (e.g., layouts) and
need to know if the text has changed.
"""
x, y = self.get_unitless_position()
return (x, y, self.get_text(), self._color,
self._verticalalignment, self._horizontalalignment,
hash(self._fontproperties),
self._rotation, self._rotation_mode,
self.figure.dpi, id(self._renderer),
)
def get_text(self):
"Get the text as string"
return self._text
def get_va(self):
'alias for :meth:`getverticalalignment`'
return self.get_verticalalignment()
def get_verticalalignment(self):
"""
Return the vertical alignment as string. Will be one of
'top', 'center', 'bottom' or 'baseline'.
"""
return self._verticalalignment
def get_window_extent(self, renderer=None, dpi=None):
'''
Return a :class:`~matplotlib.transforms.Bbox` object bounding
the text, in display units.
In addition to being used internally, this is useful for
specifying clickable regions in a png file on a web page.
*renderer* defaults to the _renderer attribute of the text
object. This is not assigned until the first execution of
:meth:`draw`, so you must use this kwarg if you want
to call :meth:`get_window_extent` prior to the first
:meth:`draw`. For getting web page regions, it is
simpler to call the method after saving the figure.
*dpi* defaults to self.figure.dpi; the renderer dpi is
irrelevant. For the web application, if figure.dpi is not
the value used when saving the figure, then the value that
was used must be specified as the *dpi* argument.
'''
#return _unit_box
if not self.get_visible():
return Bbox.unit()
if dpi is not None:
dpi_orig = self.figure.dpi
self.figure.dpi = dpi
if self.get_text() == '':
tx, ty = self._get_xy_display()
return Bbox.from_bounds(tx, ty, 0, 0)
if renderer is not None:
self._renderer = renderer
if self._renderer is None:
raise RuntimeError('Cannot get window extent w/o renderer')
bbox, info, descent = self._get_layout(self._renderer)
x, y = self.get_unitless_position()
x, y = self.get_transform().transform_point((x, y))
bbox = bbox.translated(x, y)
if dpi is not None:
self.figure.dpi = dpi_orig
return bbox
def set_backgroundcolor(self, color):
"""
Set the background color of the text by updating the bbox.
.. seealso::
:meth:`set_bbox`
To change the position of the bounding box.
ACCEPTS: any matplotlib color
"""
if self._bbox_patch is None:
self.set_bbox(dict(facecolor=color, edgecolor=color))
else:
self._bbox_patch.update(dict(facecolor=color))
self._update_clip_properties()
self.stale = True
def set_color(self, color):
"""
Set the foreground color of the text
ACCEPTS: any matplotlib color
"""
# Make sure it is hashable, or get_prop_tup will fail.
try: