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TexManager fixes. #17395

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Merged
merged 1 commit into from
May 14, 2020
Merged

TexManager fixes. #17395

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7 changes: 4 additions & 3 deletions doc/api/api_changes_3.3/deprecations.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -137,9 +137,10 @@ This method is deprecated. Use
``SymmetricalScale.InvertedSymmetricalTransform`` are deprecated. Directly
access the transform classes from the :mod:`.scale` module.

``TexManager.cachedir``
~~~~~~~~~~~~~~~~~~~~~~~
Use `matplotlib.get_cachedir()` instead.
``TexManager.cachedir``, ``TexManager.rgba_arrayd``
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Use `matplotlib.get_cachedir()` instead for the former; there is no replacement
for the latter.

Setting `.Line2D`\'s pickradius via `.Line2D.set_picker`
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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33 changes: 16 additions & 17 deletions lib/matplotlib/texmanager.py
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Expand Up @@ -53,7 +53,6 @@ class TexManager:

# Caches.
texcache = os.path.join(mpl.get_cachedir(), 'tex.cache')
rgba_arrayd = {}
grey_arrayd = {}

font_family = 'serif'
Expand Down Expand Up @@ -85,6 +84,11 @@ class TexManager:
def cachedir(self):
return mpl.get_cachedir()

@cbook.deprecated("3.3")
@property
def rgba_arrayd(self):
return {}

@functools.lru_cache() # Always return the same instance.
def __new__(cls):
Path(cls.texcache).mkdir(parents=True, exist_ok=True)
Expand Down Expand Up @@ -369,30 +373,25 @@ def make_png(self, tex, fontsize, dpi):

def get_grey(self, tex, fontsize=None, dpi=None):
"""Return the alpha channel."""
if not fontsize:
fontsize = rcParams['font.size']
if not dpi:
dpi = rcParams['savefig.dpi']
key = tex, self.get_font_config(), fontsize, dpi
alpha = self.grey_arrayd.get(key)
if alpha is None:
pngfile = self.make_png(tex, fontsize, dpi)
X = mpl.image.imread(os.path.join(self.texcache, pngfile))
self.grey_arrayd[key] = alpha = X[:, :, -1]
rgba = mpl.image.imread(os.path.join(self.texcache, pngfile))
self.grey_arrayd[key] = alpha = rgba[:, :, -1]
return alpha

def get_rgba(self, tex, fontsize=None, dpi=None, rgb=(0, 0, 0)):
"""Return latex's rendering of the tex string as an rgba array."""
if not fontsize:
fontsize = rcParams['font.size']
if not dpi:
dpi = rcParams['savefig.dpi']
r, g, b = rgb
key = tex, self.get_font_config(), fontsize, dpi, tuple(rgb)
Z = self.rgba_arrayd.get(key)

if Z is None:
alpha = self.get_grey(tex, fontsize, dpi)
Z = np.dstack([r, g, b, alpha])
self.rgba_arrayd[key] = Z

return Z
alpha = self.get_grey(tex, fontsize, dpi)
rgba = np.empty((*alpha.shape, 4))
rgba[..., :3] = mpl.colors.to_rgb(rgb)
rgba[..., -1] = alpha
return rgba

def get_text_width_height_descent(self, tex, fontsize, renderer=None):
"""Return width, height and descent of the text."""
Expand Down