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Commit736bb64

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Add language parameter to Text objects
1 parent35976c9 commit736bb64

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14 files changed

+120
-16
lines changed

14 files changed

+120
-16
lines changed

‎lib/matplotlib/_text_helpers.py‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -43,7 +43,7 @@ def warn_on_missing_glyph(codepoint, fontnames):
4343
f"Matplotlib currently does not support{block} natively.")
4444

4545

46-
deflayout(string,font,*,kern_mode=Kerning.DEFAULT):
46+
deflayout(string,font,language,*,kern_mode=Kerning.DEFAULT):
4747
"""
4848
Render *string* with *font*.
4949
@@ -65,7 +65,7 @@ def layout(string, font, *, kern_mode=Kerning.DEFAULT):
6565
"""
6666
x=0
6767
prev_glyph_idx=None
68-
char_to_font=font._get_fontmap(string)
68+
char_to_font=font._get_fontmap(string)# TODO: Pass in language.
6969
base_font=font
7070
forcharinstring:
7171
# This has done the fallback logic

‎lib/matplotlib/backends/backend_agg.py‎

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -189,7 +189,8 @@ def draw_text(self, gc, x, y, s, prop, angle, ismath=False, mtext=None):
189189
font=self._prepare_font(prop)
190190
# We pass '0' for angle here, since it will be rotated (in raster
191191
# space) in the following call to draw_text_image).
192-
font.set_text(s,0,flags=get_hinting_flag())
192+
font.set_text(s,0,flags=get_hinting_flag(),
193+
language=mtext.get_language()ifmtextisnotNoneelseNone)
193194
font.draw_glyphs_to_bitmap(
194195
antialiased=gc.get_antialiased())
195196
d=font.get_descent()/64.0

‎lib/matplotlib/backends/backend_pdf.py‎

Lines changed: 4 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -2345,6 +2345,7 @@ def draw_text(self, gc, x, y, s, prop, angle, ismath=False, mtext=None):
23452345
returnself.draw_mathtext(gc,x,y,s,prop,angle)
23462346

23472347
fontsize=prop.get_size_in_points()
2348+
language=mtext.get_language()ifmtextisnotNoneelseNone
23482349

23492350
ifmpl.rcParams['pdf.use14corefonts']:
23502351
font=self._get_font_afm(prop)
@@ -2355,7 +2356,7 @@ def draw_text(self, gc, x, y, s, prop, angle, ismath=False, mtext=None):
23552356
fonttype=mpl.rcParams['pdf.fonttype']
23562357

23572358
ifgc.get_url()isnotNone:
2358-
font.set_text(s)
2359+
font.set_text(s,language=language)
23592360
width,height=font.get_width_height()
23602361
self.file._annotations[-1][1].append(_get_link_annotation(
23612362
gc,x,y,width/64,height/64,angle))
@@ -2389,7 +2390,8 @@ def draw_text(self, gc, x, y, s, prop, angle, ismath=False, mtext=None):
23892390
multibyte_glyphs= []
23902391
prev_was_multibyte=True
23912392
prev_font=font
2392-
foritemin_text_helpers.layout(s,font,kern_mode=Kerning.UNFITTED):
2393+
foritemin_text_helpers.layout(s,font,language,
2394+
kern_mode=Kerning.UNFITTED):
23932395
if_font_supports_glyph(fonttype,ord(item.char)):
23942396
ifprev_was_multibyteoritem.ft_object!=prev_font:
23952397
singlebyte_chunks.append((item.ft_object,item.x, []))

‎lib/matplotlib/backends/backend_ps.py‎

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -795,9 +795,10 @@ def draw_text(self, gc, x, y, s, prop, angle, ismath=False, mtext=None):
795795
thisx+=width*scale
796796

797797
else:
798+
language=mtext.get_language()ifmtextisnotNoneelseNone
798799
font=self._get_font_ttf(prop)
799800
self._character_tracker.track(font,s)
800-
foritemin_text_helpers.layout(s,font):
801+
foritemin_text_helpers.layout(s,font,language):
801802
ps_name= (item.ft_object.postscript_name
802803
.encode("ascii","replace").decode("ascii"))
803804
glyph_name=item.ft_object.get_glyph_name(item.glyph_idx)

‎lib/matplotlib/ft2font.pyi‎

Lines changed: 5 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -236,7 +236,11 @@ class FT2Font(Buffer):
236236
defset_charmap(self,i:int)->None: ...
237237
defset_size(self,ptsize:float,dpi:float)->None: ...
238238
defset_text(
239-
self,string:str,angle:float= ...,flags:LoadFlags= ...
239+
self,
240+
string:str,
241+
angle:float= ...,
242+
flags:LoadFlags= ...,
243+
language:str|list[tuple[str,int,int]]|None= ...,
240244
)->NDArray[np.float64]: ...
241245
@property
242246
defascender(self)->int: ...

‎lib/matplotlib/tests/test_ft2font.py‎

Lines changed: 21 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -774,6 +774,27 @@ def test_ft2font_set_text():
774774
assertfont.get_bitmap_offset()== (6,0)
775775

776776

777+
deftest_ft2font_language_invalid():
778+
file=fm.findfont('DejaVu Sans')
779+
font=ft2font.FT2Font(file,hinting_factor=1,_kerning_factor=0)
780+
withpytest.raises(TypeError):
781+
font.set_text('foo',language=[1,2,3])
782+
withpytest.raises(TypeError):
783+
font.set_text('foo',language=[(1,2)])
784+
withpytest.raises(TypeError):
785+
font.set_text('foo',language=[('en','foo',2)])
786+
withpytest.raises(TypeError):
787+
font.set_text('foo',language=[('en',1,'foo')])
788+
789+
790+
deftest_ft2font_language():
791+
file=fm.findfont('DejaVu Sans')
792+
font=ft2font.FT2Font(file,hinting_factor=1,_kerning_factor=0)
793+
font.set_text('foo')
794+
font.set_text('foo',language='en')
795+
font.set_text('foo',language=[('en',1,2)])
796+
797+
777798
deftest_ft2font_loading():
778799
file=fm.findfont('DejaVu Sans')
779800
font=ft2font.FT2Font(file,hinting_factor=1,_kerning_factor=0)

‎lib/matplotlib/tests/test_text.py‎

Lines changed: 16 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -1190,3 +1190,19 @@ def test_ytick_rotation_mode():
11901190
tick.set_rotation(angle)
11911191

11921192
plt.subplots_adjust(left=0.4,right=0.6,top=.99,bottom=.01)
1193+
1194+
1195+
deftest_text_language_invalid():
1196+
withpytest.raises(TypeError,match='must be list of tuple'):
1197+
Text(0,0,'foo',language=[1,2,3])
1198+
withpytest.raises(TypeError,match='must be list of tuple'):
1199+
Text(0,0,'foo',language=[(1,2)])
1200+
withpytest.raises(TypeError,match='start location must be int'):
1201+
Text(0,0,'foo',language=[('en','foo',2)])
1202+
withpytest.raises(TypeError,match='end location must be int'):
1203+
Text(0,0,'foo',language=[('en',1,'foo')])
1204+
1205+
1206+
deftest_text_language():
1207+
Text(0,0,'foo',language='en')
1208+
Text(0,0,'foo',language=[('en',1,2)])

‎lib/matplotlib/text.py‎

Lines changed: 32 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -136,6 +136,7 @@ def __init__(self,
136136
super().__init__()
137137
self._x,self._y=x,y
138138
self._text=''
139+
self._language=None
139140
self._reset_visual_defaults(
140141
text=text,
141142
color=color,
@@ -1422,6 +1423,37 @@ def _va_for_angle(self, angle):
14221423
return'baseline'ifanchor_at_leftelse'top'
14231424
return'top'ifanchor_at_leftelse'baseline'
14241425

1426+
defget_language(self):
1427+
"""Return the language this Text is in."""
1428+
returnself._language
1429+
1430+
defset_language(self,language):
1431+
"""
1432+
Set the language of the text.
1433+
1434+
Parameters
1435+
----------
1436+
language : str or list[tuple[str, int, int]]
1437+
The language of the text in a format accepted by libraqm, namely `a BCP47
1438+
language code <https://www.w3.org/International/articles/language-tags/>`_.
1439+
"""
1440+
_api.check_isinstance((list,str,None),language=language)
1441+
ifisinstance(language,list):
1442+
forvalinlanguage:
1443+
ifnotisinstance(val,tuple)orlen(val)!=3:
1444+
raiseTypeError('language must be list of tuple, not {language!r}')
1445+
sublang,start,end=val
1446+
ifnotisinstance(sublang,str):
1447+
raiseTypeError(
1448+
'sub-language specification must be str, not {sublang!r}')
1449+
ifnotisinstance(start,int):
1450+
raiseTypeError('start location must be int, not {start!r}')
1451+
ifnotisinstance(end,int):
1452+
raiseTypeError('end location must be int, not {end!r}')
1453+
1454+
self._language=language
1455+
self.stale=True
1456+
14251457

14261458
classOffsetFrom:
14271459
"""Callable helper class for working with `Annotation`."""

‎lib/matplotlib/text.pyi‎

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -108,6 +108,8 @@ class Text(Artist):
108108
defset_antialiased(self,antialiased:bool)->None: ...
109109
def_ha_for_angle(self,angle:Any)->Literal['center','right','left']|None: ...
110110
def_va_for_angle(self,angle:Any)->Literal['center','top','baseline']|None: ...
111+
defget_language(self)->str|list[tuple[str,int,int]]|None: ...
112+
defset_language(self,language:str|list[tuple[str,int,int]]|None)->None: ...
111113

112114
classOffsetFrom:
113115
def__init__(

‎lib/matplotlib/textpath.py‎

Lines changed: 5 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -69,7 +69,7 @@ def get_text_width_height_descent(self, s, prop, ismath):
6969
d/=64.0
7070
returnw*scale,h*scale,d*scale
7171

72-
defget_text_path(self,prop,s,ismath=False):
72+
defget_text_path(self,prop,s,ismath=False,language=None):
7373
"""
7474
Convert text *s* to path (a tuple of vertices and codes for
7575
matplotlib.path.Path).
@@ -109,7 +109,8 @@ def get_text_path(self, prop, s, ismath=False):
109109
glyph_info,glyph_map,rects=self.get_glyphs_tex(prop,s)
110110
elifnotismath:
111111
font=self._get_font(prop)
112-
glyph_info,glyph_map,rects=self.get_glyphs_with_font(font,s)
112+
glyph_info,glyph_map,rects=self.get_glyphs_with_font(font,s,
113+
language=language)
113114
else:
114115
glyph_info,glyph_map,rects=self.get_glyphs_mathtext(prop,s)
115116

@@ -130,7 +131,7 @@ def get_text_path(self, prop, s, ismath=False):
130131
returnverts,codes
131132

132133
defget_glyphs_with_font(self,font,s,glyph_map=None,
133-
return_new_glyphs_only=False):
134+
return_new_glyphs_only=False,language=None):
134135
"""
135136
Convert string *s* to vertices and codes using the provided ttf font.
136137
"""
@@ -145,7 +146,7 @@ def get_glyphs_with_font(self, font, s, glyph_map=None,
145146

146147
xpositions= []
147148
glyph_ids= []
148-
foritemin_text_helpers.layout(s,font):
149+
foritemin_text_helpers.layout(s,font,language):
149150
char_id=self._get_char_id(item.ft_object,ord(item.char))
150151
glyph_ids.append(char_id)
151152
xpositions.append(item.x)

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