605 lines
22 KiB
Python
605 lines
22 KiB
Python
"""
|
|
An `Anti-Grain Geometry <http://antigrain.com>`_ (AGG) backend.
|
|
|
|
Features that are implemented:
|
|
|
|
* capstyles and join styles
|
|
* dashes
|
|
* linewidth
|
|
* lines, rectangles, ellipses
|
|
* clipping to a rectangle
|
|
* output to RGBA and Pillow-supported image formats
|
|
* alpha blending
|
|
* DPI scaling properly - everything scales properly (dashes, linewidths, etc)
|
|
* draw polygon
|
|
* freetype2 w/ ft2font
|
|
|
|
Still TODO:
|
|
|
|
* integrate screen dpi w/ ppi and text
|
|
"""
|
|
|
|
try:
|
|
import threading
|
|
except ImportError:
|
|
import dummy_threading as threading
|
|
from contextlib import nullcontext
|
|
from math import radians, cos, sin
|
|
|
|
import numpy as np
|
|
from PIL import Image
|
|
|
|
import matplotlib as mpl
|
|
from matplotlib import _api, cbook
|
|
from matplotlib import colors as mcolors
|
|
from matplotlib.backend_bases import (
|
|
_Backend, _check_savefig_extra_args, FigureCanvasBase, FigureManagerBase,
|
|
RendererBase)
|
|
from matplotlib.font_manager import findfont, get_font
|
|
from matplotlib.ft2font import (LOAD_FORCE_AUTOHINT, LOAD_NO_HINTING,
|
|
LOAD_DEFAULT, LOAD_NO_AUTOHINT)
|
|
from matplotlib.mathtext import MathTextParser
|
|
from matplotlib.path import Path
|
|
from matplotlib.transforms import Bbox, BboxBase
|
|
from matplotlib.backends._backend_agg import RendererAgg as _RendererAgg
|
|
|
|
|
|
backend_version = 'v2.2'
|
|
|
|
|
|
def get_hinting_flag():
|
|
mapping = {
|
|
'default': LOAD_DEFAULT,
|
|
'no_autohint': LOAD_NO_AUTOHINT,
|
|
'force_autohint': LOAD_FORCE_AUTOHINT,
|
|
'no_hinting': LOAD_NO_HINTING,
|
|
True: LOAD_FORCE_AUTOHINT,
|
|
False: LOAD_NO_HINTING,
|
|
'either': LOAD_DEFAULT,
|
|
'native': LOAD_NO_AUTOHINT,
|
|
'auto': LOAD_FORCE_AUTOHINT,
|
|
'none': LOAD_NO_HINTING,
|
|
}
|
|
return mapping[mpl.rcParams['text.hinting']]
|
|
|
|
|
|
class RendererAgg(RendererBase):
|
|
"""
|
|
The renderer handles all the drawing primitives using a graphics
|
|
context instance that controls the colors/styles
|
|
"""
|
|
|
|
# we want to cache the fonts at the class level so that when
|
|
# multiple figures are created we can reuse them. This helps with
|
|
# a bug on windows where the creation of too many figures leads to
|
|
# too many open file handles. However, storing them at the class
|
|
# level is not thread safe. The solution here is to let the
|
|
# FigureCanvas acquire a lock on the fontd at the start of the
|
|
# draw, and release it when it is done. This allows multiple
|
|
# renderers to share the cached fonts, but only one figure can
|
|
# draw at time and so the font cache is used by only one
|
|
# renderer at a time.
|
|
|
|
lock = threading.RLock()
|
|
|
|
def __init__(self, width, height, dpi):
|
|
super().__init__()
|
|
|
|
self.dpi = dpi
|
|
self.width = width
|
|
self.height = height
|
|
self._renderer = _RendererAgg(int(width), int(height), dpi)
|
|
self._filter_renderers = []
|
|
|
|
self._update_methods()
|
|
self.mathtext_parser = MathTextParser('Agg')
|
|
|
|
self.bbox = Bbox.from_bounds(0, 0, self.width, self.height)
|
|
|
|
def __getstate__(self):
|
|
# We only want to preserve the init keywords of the Renderer.
|
|
# Anything else can be re-created.
|
|
return {'width': self.width, 'height': self.height, 'dpi': self.dpi}
|
|
|
|
def __setstate__(self, state):
|
|
self.__init__(state['width'], state['height'], state['dpi'])
|
|
|
|
def _update_methods(self):
|
|
self.draw_gouraud_triangle = self._renderer.draw_gouraud_triangle
|
|
self.draw_gouraud_triangles = self._renderer.draw_gouraud_triangles
|
|
self.draw_image = self._renderer.draw_image
|
|
self.draw_markers = self._renderer.draw_markers
|
|
# This is its own method for the duration of the deprecation of
|
|
# offset_position = "data".
|
|
# self.draw_path_collection = self._renderer.draw_path_collection
|
|
self.draw_quad_mesh = self._renderer.draw_quad_mesh
|
|
self.copy_from_bbox = self._renderer.copy_from_bbox
|
|
|
|
@_api.deprecated("3.4")
|
|
def get_content_extents(self):
|
|
orig_img = np.asarray(self.buffer_rgba())
|
|
slice_y, slice_x = cbook._get_nonzero_slices(orig_img[..., 3])
|
|
return (slice_x.start, slice_y.start,
|
|
slice_x.stop - slice_x.start, slice_y.stop - slice_y.start)
|
|
|
|
@_api.deprecated("3.4")
|
|
def tostring_rgba_minimized(self):
|
|
extents = self.get_content_extents()
|
|
bbox = [[extents[0], self.height - (extents[1] + extents[3])],
|
|
[extents[0] + extents[2], self.height - extents[1]]]
|
|
region = self.copy_from_bbox(bbox)
|
|
return np.array(region), extents
|
|
|
|
def draw_path(self, gc, path, transform, rgbFace=None):
|
|
# docstring inherited
|
|
nmax = mpl.rcParams['agg.path.chunksize'] # here at least for testing
|
|
npts = path.vertices.shape[0]
|
|
|
|
if (npts > nmax > 100 and path.should_simplify and
|
|
rgbFace is None and gc.get_hatch() is None):
|
|
nch = np.ceil(npts / nmax)
|
|
chsize = int(np.ceil(npts / nch))
|
|
i0 = np.arange(0, npts, chsize)
|
|
i1 = np.zeros_like(i0)
|
|
i1[:-1] = i0[1:] - 1
|
|
i1[-1] = npts
|
|
for ii0, ii1 in zip(i0, i1):
|
|
v = path.vertices[ii0:ii1, :]
|
|
c = path.codes
|
|
if c is not None:
|
|
c = c[ii0:ii1]
|
|
c[0] = Path.MOVETO # move to end of last chunk
|
|
p = Path(v, c)
|
|
try:
|
|
self._renderer.draw_path(gc, p, transform, rgbFace)
|
|
except OverflowError as err:
|
|
raise OverflowError(
|
|
"Exceeded cell block limit (set 'agg.path.chunksize' "
|
|
"rcparam)") from err
|
|
else:
|
|
try:
|
|
self._renderer.draw_path(gc, path, transform, rgbFace)
|
|
except OverflowError as err:
|
|
raise OverflowError("Exceeded cell block limit (set "
|
|
"'agg.path.chunksize' rcparam)") from err
|
|
|
|
def draw_path_collection(self, gc, master_transform, paths, all_transforms,
|
|
offsets, offsetTrans, facecolors, edgecolors,
|
|
linewidths, linestyles, antialiaseds, urls,
|
|
offset_position):
|
|
if offset_position == "data":
|
|
_api.warn_deprecated(
|
|
"3.3", message="Support for offset_position='data' is "
|
|
"deprecated since %(since)s and will be removed %(removal)s.")
|
|
return self._renderer.draw_path_collection(
|
|
gc, master_transform, paths, all_transforms, offsets, offsetTrans,
|
|
facecolors, edgecolors, linewidths, linestyles, antialiaseds, urls,
|
|
offset_position)
|
|
|
|
def draw_mathtext(self, gc, x, y, s, prop, angle):
|
|
"""Draw mathtext using :mod:`matplotlib.mathtext`."""
|
|
ox, oy, width, height, descent, font_image, used_characters = \
|
|
self.mathtext_parser.parse(s, self.dpi, prop)
|
|
|
|
xd = descent * sin(radians(angle))
|
|
yd = descent * cos(radians(angle))
|
|
x = round(x + ox + xd)
|
|
y = round(y - oy + yd)
|
|
self._renderer.draw_text_image(font_image, x, y + 1, angle, gc)
|
|
|
|
def draw_text(self, gc, x, y, s, prop, angle, ismath=False, mtext=None):
|
|
# docstring inherited
|
|
|
|
if ismath:
|
|
return self.draw_mathtext(gc, x, y, s, prop, angle)
|
|
|
|
flags = get_hinting_flag()
|
|
font = self._get_agg_font(prop)
|
|
|
|
if font is None:
|
|
return None
|
|
# We pass '0' for angle here, since it will be rotated (in raster
|
|
# space) in the following call to draw_text_image).
|
|
font.set_text(s, 0, flags=flags)
|
|
font.draw_glyphs_to_bitmap(
|
|
antialiased=mpl.rcParams['text.antialiased'])
|
|
d = font.get_descent() / 64.0
|
|
# The descent needs to be adjusted for the angle.
|
|
xo, yo = font.get_bitmap_offset()
|
|
xo /= 64.0
|
|
yo /= 64.0
|
|
xd = d * sin(radians(angle))
|
|
yd = d * cos(radians(angle))
|
|
x = round(x + xo + xd)
|
|
y = round(y + yo + yd)
|
|
self._renderer.draw_text_image(font, x, y + 1, angle, gc)
|
|
|
|
def get_text_width_height_descent(self, s, prop, ismath):
|
|
# docstring inherited
|
|
|
|
if ismath in ["TeX", "TeX!"]:
|
|
if ismath == "TeX!":
|
|
_api.warn_deprecated(
|
|
"3.3", message="Support for ismath='TeX!' is deprecated "
|
|
"since %(since)s and will be removed %(removal)s; use "
|
|
"ismath='TeX' instead.")
|
|
# todo: handle props
|
|
texmanager = self.get_texmanager()
|
|
fontsize = prop.get_size_in_points()
|
|
w, h, d = texmanager.get_text_width_height_descent(
|
|
s, fontsize, renderer=self)
|
|
return w, h, d
|
|
|
|
if ismath:
|
|
ox, oy, width, height, descent, fonts, used_characters = \
|
|
self.mathtext_parser.parse(s, self.dpi, prop)
|
|
return width, height, descent
|
|
|
|
flags = get_hinting_flag()
|
|
font = self._get_agg_font(prop)
|
|
font.set_text(s, 0.0, flags=flags)
|
|
w, h = font.get_width_height() # width and height of unrotated string
|
|
d = font.get_descent()
|
|
w /= 64.0 # convert from subpixels
|
|
h /= 64.0
|
|
d /= 64.0
|
|
return w, h, d
|
|
|
|
def draw_tex(self, gc, x, y, s, prop, angle, *, mtext=None):
|
|
# docstring inherited
|
|
# todo, handle props, angle, origins
|
|
size = prop.get_size_in_points()
|
|
|
|
texmanager = self.get_texmanager()
|
|
|
|
Z = texmanager.get_grey(s, size, self.dpi)
|
|
Z = np.array(Z * 255.0, np.uint8)
|
|
|
|
w, h, d = self.get_text_width_height_descent(s, prop, ismath="TeX")
|
|
xd = d * sin(radians(angle))
|
|
yd = d * cos(radians(angle))
|
|
x = round(x + xd)
|
|
y = round(y + yd)
|
|
self._renderer.draw_text_image(Z, x, y, angle, gc)
|
|
|
|
def get_canvas_width_height(self):
|
|
# docstring inherited
|
|
return self.width, self.height
|
|
|
|
def _get_agg_font(self, prop):
|
|
"""
|
|
Get the font for text instance t, caching for efficiency
|
|
"""
|
|
fname = findfont(prop)
|
|
font = get_font(fname)
|
|
|
|
font.clear()
|
|
size = prop.get_size_in_points()
|
|
font.set_size(size, self.dpi)
|
|
|
|
return font
|
|
|
|
def points_to_pixels(self, points):
|
|
# docstring inherited
|
|
return points * self.dpi / 72
|
|
|
|
def buffer_rgba(self):
|
|
return memoryview(self._renderer)
|
|
|
|
def tostring_argb(self):
|
|
return np.asarray(self._renderer).take([3, 0, 1, 2], axis=2).tobytes()
|
|
|
|
def tostring_rgb(self):
|
|
return np.asarray(self._renderer).take([0, 1, 2], axis=2).tobytes()
|
|
|
|
def clear(self):
|
|
self._renderer.clear()
|
|
|
|
def option_image_nocomposite(self):
|
|
# docstring inherited
|
|
|
|
# It is generally faster to composite each image directly to
|
|
# the Figure, and there's no file size benefit to compositing
|
|
# with the Agg backend
|
|
return True
|
|
|
|
def option_scale_image(self):
|
|
# docstring inherited
|
|
return False
|
|
|
|
def restore_region(self, region, bbox=None, xy=None):
|
|
"""
|
|
Restore the saved region. If bbox (instance of BboxBase, or
|
|
its extents) is given, only the region specified by the bbox
|
|
will be restored. *xy* (a pair of floats) optionally
|
|
specifies the new position (the LLC of the original region,
|
|
not the LLC of the bbox) where the region will be restored.
|
|
|
|
>>> region = renderer.copy_from_bbox()
|
|
>>> x1, y1, x2, y2 = region.get_extents()
|
|
>>> renderer.restore_region(region, bbox=(x1+dx, y1, x2, y2),
|
|
... xy=(x1-dx, y1))
|
|
|
|
"""
|
|
if bbox is not None or xy is not None:
|
|
if bbox is None:
|
|
x1, y1, x2, y2 = region.get_extents()
|
|
elif isinstance(bbox, BboxBase):
|
|
x1, y1, x2, y2 = bbox.extents
|
|
else:
|
|
x1, y1, x2, y2 = bbox
|
|
|
|
if xy is None:
|
|
ox, oy = x1, y1
|
|
else:
|
|
ox, oy = xy
|
|
|
|
# The incoming data is float, but the _renderer type-checking wants
|
|
# to see integers.
|
|
self._renderer.restore_region(region, int(x1), int(y1),
|
|
int(x2), int(y2), int(ox), int(oy))
|
|
|
|
else:
|
|
self._renderer.restore_region(region)
|
|
|
|
def start_filter(self):
|
|
"""
|
|
Start filtering. It simply create a new canvas (the old one is saved).
|
|
"""
|
|
self._filter_renderers.append(self._renderer)
|
|
self._renderer = _RendererAgg(int(self.width), int(self.height),
|
|
self.dpi)
|
|
self._update_methods()
|
|
|
|
def stop_filter(self, post_processing):
|
|
"""
|
|
Save the plot in the current canvas as a image and apply
|
|
the *post_processing* function.
|
|
|
|
def post_processing(image, dpi):
|
|
# ny, nx, depth = image.shape
|
|
# image (numpy array) has RGBA channels and has a depth of 4.
|
|
...
|
|
# create a new_image (numpy array of 4 channels, size can be
|
|
# different). The resulting image may have offsets from
|
|
# lower-left corner of the original image
|
|
return new_image, offset_x, offset_y
|
|
|
|
The saved renderer is restored and the returned image from
|
|
post_processing is plotted (using draw_image) on it.
|
|
"""
|
|
orig_img = np.asarray(self.buffer_rgba())
|
|
slice_y, slice_x = cbook._get_nonzero_slices(orig_img[..., 3])
|
|
cropped_img = orig_img[slice_y, slice_x]
|
|
|
|
self._renderer = self._filter_renderers.pop()
|
|
self._update_methods()
|
|
|
|
if cropped_img.size:
|
|
img, ox, oy = post_processing(cropped_img / 255, self.dpi)
|
|
gc = self.new_gc()
|
|
if img.dtype.kind == 'f':
|
|
img = np.asarray(img * 255., np.uint8)
|
|
self._renderer.draw_image(
|
|
gc, slice_x.start + ox, int(self.height) - slice_y.stop + oy,
|
|
img[::-1])
|
|
|
|
|
|
class FigureCanvasAgg(FigureCanvasBase):
|
|
# docstring inherited
|
|
|
|
def copy_from_bbox(self, bbox):
|
|
renderer = self.get_renderer()
|
|
return renderer.copy_from_bbox(bbox)
|
|
|
|
def restore_region(self, region, bbox=None, xy=None):
|
|
renderer = self.get_renderer()
|
|
return renderer.restore_region(region, bbox, xy)
|
|
|
|
def draw(self):
|
|
# docstring inherited
|
|
self.renderer = self.get_renderer(cleared=True)
|
|
# Acquire a lock on the shared font cache.
|
|
with RendererAgg.lock, \
|
|
(self.toolbar._wait_cursor_for_draw_cm() if self.toolbar
|
|
else nullcontext()):
|
|
self.figure.draw(self.renderer)
|
|
# A GUI class may be need to update a window using this draw, so
|
|
# don't forget to call the superclass.
|
|
super().draw()
|
|
|
|
def get_renderer(self, cleared=False):
|
|
w, h = self.figure.bbox.size
|
|
key = w, h, self.figure.dpi
|
|
reuse_renderer = (hasattr(self, "renderer")
|
|
and getattr(self, "_lastKey", None) == key)
|
|
if not reuse_renderer:
|
|
self.renderer = RendererAgg(w, h, self.figure.dpi)
|
|
self._lastKey = key
|
|
elif cleared:
|
|
self.renderer.clear()
|
|
return self.renderer
|
|
|
|
def tostring_rgb(self):
|
|
"""
|
|
Get the image as RGB `bytes`.
|
|
|
|
`draw` must be called at least once before this function will work and
|
|
to update the renderer for any subsequent changes to the Figure.
|
|
"""
|
|
return self.renderer.tostring_rgb()
|
|
|
|
def tostring_argb(self):
|
|
"""
|
|
Get the image as ARGB `bytes`.
|
|
|
|
`draw` must be called at least once before this function will work and
|
|
to update the renderer for any subsequent changes to the Figure.
|
|
"""
|
|
return self.renderer.tostring_argb()
|
|
|
|
def buffer_rgba(self):
|
|
"""
|
|
Get the image as a `memoryview` to the renderer's buffer.
|
|
|
|
`draw` must be called at least once before this function will work and
|
|
to update the renderer for any subsequent changes to the Figure.
|
|
"""
|
|
return self.renderer.buffer_rgba()
|
|
|
|
@_check_savefig_extra_args
|
|
def print_raw(self, filename_or_obj, *args):
|
|
FigureCanvasAgg.draw(self)
|
|
renderer = self.get_renderer()
|
|
with cbook.open_file_cm(filename_or_obj, "wb") as fh:
|
|
fh.write(renderer.buffer_rgba())
|
|
|
|
print_rgba = print_raw
|
|
|
|
@_check_savefig_extra_args
|
|
def print_png(self, filename_or_obj, *args,
|
|
metadata=None, pil_kwargs=None):
|
|
"""
|
|
Write the figure to a PNG file.
|
|
|
|
Parameters
|
|
----------
|
|
filename_or_obj : str or path-like or file-like
|
|
The file to write to.
|
|
|
|
metadata : dict, optional
|
|
Metadata in the PNG file as key-value pairs of bytes or latin-1
|
|
encodable strings.
|
|
According to the PNG specification, keys must be shorter than 79
|
|
chars.
|
|
|
|
The `PNG specification`_ defines some common keywords that may be
|
|
used as appropriate:
|
|
|
|
- Title: Short (one line) title or caption for image.
|
|
- Author: Name of image's creator.
|
|
- Description: Description of image (possibly long).
|
|
- Copyright: Copyright notice.
|
|
- Creation Time: Time of original image creation
|
|
(usually RFC 1123 format).
|
|
- Software: Software used to create the image.
|
|
- Disclaimer: Legal disclaimer.
|
|
- Warning: Warning of nature of content.
|
|
- Source: Device used to create the image.
|
|
- Comment: Miscellaneous comment;
|
|
conversion from other image format.
|
|
|
|
Other keywords may be invented for other purposes.
|
|
|
|
If 'Software' is not given, an autogenerated value for Matplotlib
|
|
will be used. This can be removed by setting it to *None*.
|
|
|
|
For more details see the `PNG specification`_.
|
|
|
|
.. _PNG specification: \
|
|
https://www.w3.org/TR/2003/REC-PNG-20031110/#11keywords
|
|
|
|
pil_kwargs : dict, optional
|
|
Keyword arguments passed to `PIL.Image.Image.save`.
|
|
|
|
If the 'pnginfo' key is present, it completely overrides
|
|
*metadata*, including the default 'Software' key.
|
|
"""
|
|
FigureCanvasAgg.draw(self)
|
|
mpl.image.imsave(
|
|
filename_or_obj, self.buffer_rgba(), format="png", origin="upper",
|
|
dpi=self.figure.dpi, metadata=metadata, pil_kwargs=pil_kwargs)
|
|
|
|
def print_to_buffer(self):
|
|
FigureCanvasAgg.draw(self)
|
|
renderer = self.get_renderer()
|
|
return (bytes(renderer.buffer_rgba()),
|
|
(int(renderer.width), int(renderer.height)))
|
|
|
|
# Note that these methods should typically be called via savefig() and
|
|
# print_figure(), and the latter ensures that `self.figure.dpi` already
|
|
# matches the dpi kwarg (if any).
|
|
|
|
@_check_savefig_extra_args(
|
|
extra_kwargs=["quality", "optimize", "progressive"])
|
|
@_api.delete_parameter("3.3", "quality",
|
|
alternative="pil_kwargs={'quality': ...}")
|
|
@_api.delete_parameter("3.3", "optimize",
|
|
alternative="pil_kwargs={'optimize': ...}")
|
|
@_api.delete_parameter("3.3", "progressive",
|
|
alternative="pil_kwargs={'progressive': ...}")
|
|
def print_jpg(self, filename_or_obj, *args, pil_kwargs=None, **kwargs):
|
|
"""
|
|
Write the figure to a JPEG file.
|
|
|
|
Parameters
|
|
----------
|
|
filename_or_obj : str or path-like or file-like
|
|
The file to write to.
|
|
|
|
Other Parameters
|
|
----------------
|
|
quality : int, default: :rc:`savefig.jpeg_quality`
|
|
The image quality, on a scale from 1 (worst) to 95 (best).
|
|
Values above 95 should be avoided; 100 disables portions of
|
|
the JPEG compression algorithm, and results in large files
|
|
with hardly any gain in image quality. This parameter is
|
|
deprecated.
|
|
optimize : bool, default: False
|
|
Whether the encoder should make an extra pass over the image
|
|
in order to select optimal encoder settings. This parameter is
|
|
deprecated.
|
|
progressive : bool, default: False
|
|
Whether the image should be stored as a progressive JPEG file.
|
|
This parameter is deprecated.
|
|
pil_kwargs : dict, optional
|
|
Additional keyword arguments that are passed to
|
|
`PIL.Image.Image.save` when saving the figure. These take
|
|
precedence over *quality*, *optimize* and *progressive*.
|
|
"""
|
|
# Remove transparency by alpha-blending on an assumed white background.
|
|
r, g, b, a = mcolors.to_rgba(self.figure.get_facecolor())
|
|
try:
|
|
self.figure.set_facecolor(a * np.array([r, g, b]) + 1 - a)
|
|
FigureCanvasAgg.draw(self)
|
|
finally:
|
|
self.figure.set_facecolor((r, g, b, a))
|
|
if pil_kwargs is None:
|
|
pil_kwargs = {}
|
|
for k in ["quality", "optimize", "progressive"]:
|
|
if k in kwargs:
|
|
pil_kwargs.setdefault(k, kwargs.pop(k))
|
|
if "quality" not in pil_kwargs:
|
|
quality = pil_kwargs["quality"] = \
|
|
dict.__getitem__(mpl.rcParams, "savefig.jpeg_quality")
|
|
if quality not in [0, 75, 95]: # default qualities.
|
|
_api.warn_deprecated(
|
|
"3.3", name="savefig.jpeg_quality", obj_type="rcParam",
|
|
addendum="Set the quality using "
|
|
"`pil_kwargs={'quality': ...}`; the future default "
|
|
"quality will be 75, matching the default of Pillow and "
|
|
"libjpeg.")
|
|
pil_kwargs.setdefault("dpi", (self.figure.dpi, self.figure.dpi))
|
|
# Drop alpha channel now.
|
|
return (Image.fromarray(np.asarray(self.buffer_rgba())[..., :3])
|
|
.save(filename_or_obj, format='jpeg', **pil_kwargs))
|
|
|
|
print_jpeg = print_jpg
|
|
|
|
@_check_savefig_extra_args
|
|
def print_tif(self, filename_or_obj, *, pil_kwargs=None):
|
|
FigureCanvasAgg.draw(self)
|
|
if pil_kwargs is None:
|
|
pil_kwargs = {}
|
|
pil_kwargs.setdefault("dpi", (self.figure.dpi, self.figure.dpi))
|
|
return (Image.fromarray(np.asarray(self.buffer_rgba()))
|
|
.save(filename_or_obj, format='tiff', **pil_kwargs))
|
|
|
|
print_tiff = print_tif
|
|
|
|
|
|
@_Backend.export
|
|
class _BackendAgg(_Backend):
|
|
FigureCanvas = FigureCanvasAgg
|
|
FigureManager = FigureManagerBase
|