mirror of
https://github.com/xonsh/xonsh.git
synced 2025-03-04 08:24:40 +01:00
70 lines
2.1 KiB
Python
70 lines
2.1 KiB
Python
"""Matplotlib hooks, for what its worth."""
|
|
import shutil
|
|
|
|
import numpy as np
|
|
import matplotlib
|
|
import matplotlib.pyplot as plt
|
|
import pickle
|
|
|
|
from xonsh.tools import print_color, ON_WINDOWS
|
|
|
|
|
|
def figure_to_rgb_array(fig, width, height):
|
|
"""Converts figure to a numpy array of rgb values
|
|
|
|
Forked from http://www.icare.univ-lille1.fr/wiki/index.php/How_to_convert_a_matplotlib_figure_to_a_numpy_array_or_a_PIL_image
|
|
"""
|
|
w, h = fig.canvas.get_width_height()
|
|
dpi = fig.get_dpi()
|
|
fig.set_size_inches(width/dpi, height/dpi, forward=True)
|
|
width, height = fig.canvas.get_width_height()
|
|
ax = fig.gca()
|
|
ax.set_xticklabels([])
|
|
ax.set_yticklabels([])
|
|
fig.set_tight_layout(True)
|
|
fig.set_frameon(False)
|
|
fig.set_facecolor('w')
|
|
font_size = matplotlib.rcParams['font.size']
|
|
matplotlib.rcParams.update({'font.size': 1})
|
|
|
|
# Draw the renderer and get the RGB buffer from the figure
|
|
fig.canvas.draw()
|
|
buf = np.fromstring(fig.canvas.tostring_rgb(), dtype=np.uint8)
|
|
buf.shape = (height, width, 3)
|
|
|
|
# clean up and return
|
|
matplotlib.rcParams.update({'font.size': font_size})
|
|
return buf
|
|
|
|
|
|
def buf_to_color_str(buf):
|
|
"""Converts an RGB array to a xonsh color string."""
|
|
space = ' '
|
|
pix = '{{bg#{0:02x}{1:02x}{2:02x}}} '
|
|
pixels = []
|
|
for h in range(buf.shape[0]):
|
|
last = None
|
|
for w in range(buf.shape[1]):
|
|
rgb = buf[h, w]
|
|
if last is not None and (last == rgb).all():
|
|
pixels.append(space)
|
|
else:
|
|
pixels.append(pix.format(*rgb))
|
|
last = rgb
|
|
pixels.append('{NO_COLOR}\n')
|
|
pixels[-1] = pixels[-1].rstrip()
|
|
return ''.join(pixels)
|
|
|
|
|
|
def show():
|
|
# perform a deep copy using pickel because
|
|
# Figure is currently not compatible with 'deepcopy'
|
|
fig = pickle.loads(pickle.dumps(plt.gcf()))
|
|
w, h = shutil.get_terminal_size()
|
|
if ON_WINDOWS:
|
|
w -= 1 # @melund reports that win terminals are too thin
|
|
h -= 1 # leave space for next prompt
|
|
buf = figure_to_rgb_array(fig, w, h)
|
|
s = buf_to_color_str(buf)
|
|
print_color(s)
|
|
plt.close(fig) # close the figure that was created
|