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jblitzar
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github-python-corpus

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return 800
elif weight == 'black':
return 900
else:
raise ValueError('weight ' + weight + ' not valid')
class NavigationToolbar2Kivy(NavigationToolbar2):
'''This class extends from matplotlib class NavigationToolbar2 and
creates an action bar which is added to the main app to allow the
following operations to the figures.
Home: Resets the plot axes to the initial state.
Left: Undo an operation performed.
Right: Redo an operation performed.
Pan: Allows to drag the plot.
Zoom: Allows to define a rectangular area to zoom in.
Configure: Loads a pop up for repositioning elements.
Save: Loads a Save Dialog to generate an image.
'''
def __init__(self, canvas, **kwargs):
self.actionbar = ActionBar(pos_hint={'top': 1.0})
super(NavigationToolbar2Kivy, self).__init__(canvas)
self.rubberband_color = (1.0, 0.0, 0.0, 1.0)
self.lastrect = None
self.save_dialog = Builder.load_string(textwrap.dedent('''\
<SaveDialog>:
text_input: text_input
BoxLayout:
size: root.size
pos: root.pos
orientation: "vertical"
FileChooserListView:
id: filechooser
on_selection: text_input.text = self.selection and\
self.selection[0] or ''
TextInput:
id: text_input
size_hint_y: None
height: 30
multiline: False
BoxLayout:
size_hint_y: None
height: 30
Button:
text: "Cancel"
on_release: root.cancel()
Button:
text: "Save"
on_release: root.save(filechooser.path,\
text_input.text)
'''))
def _init_toolbar(self):
'''A Toolbar is created with an ActionBar widget in which buttons are
added with a specific behavior given by a callback. The buttons
properties are given by matplotlib.
'''
basedir = os.path.join(rcParams['datapath'], 'images')
actionview = ActionView()
actionprevious = ActionPrevious(title="Navigation", with_previous=False)
actionoverflow = ActionOverflow()
actionview.add_widget(actionprevious)
actionview.add_widget(actionoverflow)
actionview.use_separator = True
self.actionbar.add_widget(actionview)
id_group = uuid.uuid4()
for text, tooltip_text, image_file, callback in self.toolitems:
if text is None:
actionview.add_widget(ActionSeparator())
continue
fname = os.path.join(basedir, image_file + '.png')
if text in ['Pan', 'Zoom']:
action_button = ActionToggleButton(text=text, icon=fname,
group=id_group)
else:
action_button = ActionButton(text=text, icon=fname)
action_button.bind(on_press=getattr(self, callback))
actionview.add_widget(action_button)
def configure_subplots(self, *largs):
'''It will be implemented later.'''
pass
def dismiss_popup(self):
self._popup.dismiss()
def show_save(self):
'''Displays a popup widget to perform a save operation.'''
content = SaveDialog(save=self.save, cancel=self.dismiss_popup)
self._popup = Popup(title="Save file", content=content,
size_hint=(0.9, 0.9))
self._popup.open()
def save(self, path, filename):
self.canvas.export_to_png(os.path.join(path, filename))