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'''
from __future__ import (absolute_import, division, print_function,
unicode_literals)
import six
import os
import matplotlib
import matplotlib.transforms as transforms
from matplotlib._pylab_helpers import Gcf
from matplotlib.backend_bases import RendererBase, GraphicsContextBase,\
FigureManagerBase, FigureCanvasBase, NavigationToolbar2, TimerBase
from matplotlib.figure import Figure
from matplotlib.transforms import Bbox, Affine2D
from matplotlib.backend_bases import ShowBase, Event
from matplotlib.backends.backend_agg import FigureCanvasAgg
from matplotlib.mathtext import MathTextParser
from matplotlib import rcParams
from hashlib import md5
from matplotlib import _path
try:
import kivy
except ImportError:
raise ImportError("this backend requires Kivy to be installed.")
from kivy.app import App
from kivy.graphics.texture import Texture
from kivy.graphics import Rectangle
from kivy.uix.widget import Widget
from kivy.uix.label import Label
from kivy.uix.floatlayout import FloatLayout
from kivy.uix.behaviors import FocusBehavior
from kivy.uix.actionbar import ActionBar, ActionView, \
ActionButton, ActionToggleButton, \
ActionPrevious, ActionOverflow, ActionSeparator
from kivy.base import EventLoop
from kivy.core.text import Label as CoreLabel
from kivy.core.image import Image
from kivy.graphics import Color, Line
from kivy.graphics import Rotate, Translate
from kivy.graphics.instructions import InstructionGroup
from kivy.graphics.tesselator import Tesselator
from kivy.graphics.context_instructions import PopMatrix, PushMatrix
from kivy.graphics import StencilPush, StencilPop, StencilUse,\
StencilUnUse
from kivy.logger import Logger
from kivy.graphics import Mesh
from kivy.resources import resource_find
from kivy.uix.stencilview import StencilView
from kivy.core.window import Window
from kivy.uix.button import Button
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.floatlayout import FloatLayout
from kivy.uix.relativelayout import RelativeLayout
from kivy.uix.popup import Popup
from kivy.properties import ObjectProperty
from kivy.uix.textinput import TextInput
from kivy.lang import Builder
from kivy.logger import Logger
from kivy.clock import Clock
from distutils.version import LooseVersion
_mpl_ge_1_5 = LooseVersion(matplotlib.__version__) >= LooseVersion('1.5.0')
_mpl_ge_2_0 = LooseVersion(matplotlib.__version__) >= LooseVersion('2.0.0')
import numpy as np
import io
import textwrap
import uuid
import numbers
from functools import partial
from math import cos, sin, pi
kivy.require('1.9.1')
toolbar = None
my_canvas = None
class SaveDialog(FloatLayout):
save = ObjectProperty(None)
text_input = ObjectProperty(None)
cancel = ObjectProperty(None)
class MPLKivyApp(App):
'''Creates the App initializing a FloatLayout with a figure and toolbar
widget.
'''
figure = ObjectProperty(None)
toolbar = ObjectProperty(None)
def build(self):
EventLoop.ensure_window()
layout = FloatLayout()
if self.figure:
self.figure.size_hint_y = 0.9
layout.add_widget(self.figure)
if self.toolbar: