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gui.py
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gui.py
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# coding: utf-8
# Copyright (c) Max-Planck-Institut für Eisenforschung GmbH - Computational Materials Design (CM) Department
# Distributed under the terms of "New BSD License", see the LICENSE file.
import numpy as np
import os
import ipywidgets as widgets
from IPython.display import display
import html
import pandas
__author__ = "Joerg Neugebauer, Jan Janssen"
__copyright__ = (
"Copyright 2020, Max-Planck-Institut für Eisenforschung GmbH - "
"Computational Materials Design (CM) Department"
)
__version__ = "1.0"
__maintainer__ = "Jan Janssen"
__email__ = "janssen@mpie.de"
__status__ = "development"
__date__ = "Sep 1, 2017"
def is_h5_file(name):
return "h5" == name.split(".")[-1]
def is_h5_dir(name):
return "hdf5" == name.split("_")[-1]
class ProjectGUI:
"""
Gui to quickly browse through projects and objects
Note: requires "%matplotlib notebook" at the beginning of your notebook (to refresh plots)
"""
def __init__(self, project):
self._ref_path = project.path
self.project = project.copy()
self.project._inspect_mode = True
self.parent = None
self.name = None
self.fig, self.ax = None, None
self.w_group = None
self.w_node = None
self.w_file = None
self.w_text = None
self.w_tab = None
self.w_path = None
self.w_type = None
# self.fig, self.ax = plt.subplots()
self.create_widgets()
self.connect_widgets()
self.display()
def create_widgets(self):
"""
Returns:
"""
select = widgets.Select # Multiple
self.w_group = select(description="Groups:")
self.w_node = select(description="Nodes:")
self.w_file = select(description="Files:")
self.w_text = widgets.HTML()
# self.w_text = widgets.Textarea()
self.w_text.layout.height = "330px"
self.w_text.layout.width = "580px"
self.w_text.disabled = True
# self.w_plot = self.fig
w_list = widgets.VBox([self.w_group, self.w_node, self.w_file])
self.w_tab = widgets.HBox([w_list, self.w_text])
# tab = widgets.Tab(children=[self.w_group, self.w_node, self.w_file, self.w_text])
# [tab.set_title(num, name) for num, name in enumerate(['groups', 'nodes', 'files', 'text'])]
# self.w_tab = tab
self.w_path = widgets.Text(name="Path: ")
self.w_path.layout.width = "680px"
self.w_type = widgets.Text(name="Type: ")
self.refresh_view()
def connect_widgets(self):
"""
Returns:
"""
self.w_group.observe(self.on_value_change, names="value")
self.w_node.observe(self.on_value_change, names="value")
self.w_file.observe(self.on_value_change, names="value")
def display(self):
"""
Returns:
"""
w_txt = widgets.HBox([self.w_path, self.w_type])
display(widgets.VBox([self.w_tab, w_txt]))
def plot_array(self, val):
"""
Args:
val:
Returns:
"""
try:
import pylab as plt
except ImportError:
import matplotlib.pyplot as plt
plt.ioff()
if self.fig is None:
self.fig, self.ax = plt.subplots()
else:
self.ax.clear()
# self.ax.set_title(self.name)
if val.ndim == 1:
self.ax.plot(val)
elif val.ndim == 2:
if len(val) == 1:
self.ax.plot(val[0])
else:
self.ax.plot(val)
elif val.ndim == 3:
self.ax.plot(val[:, :, 0])
# self.fig.canvas.draw()
self.w_text.value = self.plot_to_html()
plt.close()
def plot_to_html(self):
import base64
import io
# write image data to a string buffer and get the PNG image bytes
buf = io.BytesIO()
self.fig.set_size_inches(8, 4)
self.fig.savefig(buf, format="png")
buf.seek(0)
return """<img src='data:image/png;base64,{}'/>""".format(
base64.b64encode(buf.getvalue()).decode("ascii")
)
def on_value_change(self, change):
"""
Args:
change:
Returns:
"""
name = change["new"]
self.w_text.value = ""
if name == "..":
self.move_up()
self.w_group.value = "."
else:
if name is not None:
if isinstance(name, str):
self.update_project(name)
def get_rel_path(self, path):
"""
Args:
path:
Returns:
"""
return os.path.relpath(path, self._ref_path).replace("\\", "/")
@staticmethod
def dict_to_str(my_dict):
"""
Args:
my_dict:
Returns:
"""
# eol = os.linesep
eol = "<br>"
if "Parameter" in my_dict.keys():
key = html.escape(my_dict["Parameter"])
val = html.escape(my_dict["Value"])
com = html.escape(my_dict["Comment"])
table = [
"{}: {} {} {}".format(key, val, com, eol)
for key, val, com in zip(key, val, com)
]
else:
table = ["{}: {} {}".format(key, val, eol) for key, val in my_dict.items()]
return "".join(table)
def refresh_view(self):
"""
Returns:
"""
eol = os.linesep
self.w_type.value = str(type(self.project))
if isinstance(self.project, str):
self.w_text.value = html.escape(self.project)
self._move_up()
# self.w_path.value = self.get_rel_path(self.parent.path + '/' + self.name)
elif isinstance(self.project, dict):
self.w_text.value = self.dict_to_str(self.project)
self._move_up()
# self.w_path.value = self.get_rel_path(self.parent.path + '/' + self.name)
elif isinstance(self.project, (int, float)):
self.w_text.value = html.escape(str(self.project))
self._move_up()
# self.w_path.value = self.get_rel_path(self.parent.path + '/' + self.name)
elif isinstance(self.project, list):
max_length = 2000 # performance of widget above is extremely poor
if len(self.project) < max_length:
self.w_text.value = "<br>".join(self.project)
else:
self.w_text.value = (
"<br>".join(self.project[:max_length])
+ eol
+ " .... file too long: skipped ...."
)
self.w_type.value = "list: {} lines".format(len(self.project))
self._move_up()
# self.w_path.value = self.get_rel_path(self.parent.path + '/' + self.name)
elif isinstance(self.project, np.ndarray):
self.plot_array(self.project)
self._move_up()
# self.w_path.value = self.get_rel_path(self.parent.path + '/' + self.name)
elif "data_dict" in self.project.list_nodes():
self.w_text.value = pandas.DataFrame(self.project["data_dict"]).to_html()
self._move_up()
# self.w_path.value = self.get_rel_path(self.parent.path + '/' + self.name)
elif self.project is None:
raise ValueError(
"project is None: {}".format(type(self.project)), self.parent
)
else:
self.w_group.options = [".", ".."]
self.w_node.options = ["."]
self.w_file.options = ["."]
if hasattr(self.project, "path"):
self.w_path.value = self.get_rel_path(self.project.path)
else:
print("path missing: ", type(self.project))
groups = sorted(
[el for el in self.project.list_groups() if not is_h5_dir(el)]
)
self.w_group.options = list(self.w_group.options) + groups
nodes = sorted([el for el in self.project.list_nodes()])
self.w_node.options = list(self.w_node.options) + nodes
if hasattr(self.project, "list_files"):
files = sorted(
[el for el in self.project.list_files() if not is_h5_file(el)]
)
self.w_file.options = list(self.w_file.options) + files
else:
self.w_file.options = []
def update_project(self, name):
"""
Args:
name:
Returns:
"""
if name == ".":
return
self.name = name
self.parent = self.project.copy()
self.project = self.project[name]
self.refresh_view()
def _move_up(self):
"""
Returns:
"""
if hasattr(self.project, "path"):
self.project = self.project[".."]
else:
self.project = self.parent
if self.parent is None:
self.w_path.value = "/".join(self.w_path.value.split("/")[:-1])
else:
self.w_path.value = self.get_rel_path(self.parent.path + "/" + self.name)
def move_up(self):
"""
Returns:
"""
self._move_up()
self.refresh_view()