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y = newcoord[1]
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inside = self.collide_point(touch.x, touch.y)
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if inside:
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self.motion_notify_event(x, y, guiEvent=None)
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if not inside and not self.entered_figure:
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self.leave_notify_event(guiEvent=None)
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self.entered_figure = True
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elif inside and self.entered_figure:
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self.enter_notify_event(guiEvent=None, xy=(x, y))
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self.entered_figure = False
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return False
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def get_mouse_button(self, touch):
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'''Translate kivy convention for left, right and middle click button
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into matplotlib int values: 1 for left, 2 for middle and 3 for
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right.
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'''
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if 'button' in touch.profile:
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if touch.button == "left":
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return 1
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elif touch.button == "middle":
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return 2
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elif touch.button == "right":
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return 3
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return -1
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def on_touch_up(self, touch):
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'''Kivy Event to trigger the following matplotlib events:
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`scroll_event` and `button_release_event`.
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'''
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newcoord = self.to_widget(touch.x, touch.y, relative=True)
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x = newcoord[0]
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y = newcoord[1]
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if touch.grab_current is self:
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if 'button' in touch.profile and touch.button in ("scrollup", "scrolldown",):
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self.scroll_event(x, y, 5, guiEvent=None)
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else:
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self.button_release_event(x, y, self.get_mouse_button(touch), guiEvent=None)
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touch.ungrab(self)
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else:
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return super(FigureCanvasKivy, self).on_touch_up(touch)
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return False
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def keyboard_on_key_down(self, window, keycode, text, modifiers):
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'''Kivy event to trigger matplotlib `key_press_event`.
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'''
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self.key_press_event(keycode[1], guiEvent=None)
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return super(FigureCanvasKivy, self).keyboard_on_key_down(window,
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keycode, text, modifiers)
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def keyboard_on_key_up(self, window, keycode):
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'''Kivy event to trigger matplotlib `key_release_event`.
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'''
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self.key_release_event(keycode[1], guiEvent=None)
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return super(FigureCanvasKivy, self).keyboard_on_key_up(window, keycode)
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def _on_mouse_pos(self, *args):
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'''Kivy Event to trigger the following matplotlib events:
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`motion_notify_event`, `leave_notify_event` and
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`enter_notify_event`.
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'''
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pos = args[1]
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newcoord = self.to_widget(pos[0], pos[1], relative=True)
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x = newcoord[0]
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y = newcoord[1]
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inside = self.collide_point(*pos)
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if inside:
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self.motion_notify_event(x, y, guiEvent=None)
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if not inside and not self.entered_figure:
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self.leave_notify_event(guiEvent=None)
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self.entered_figure = True
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elif inside and self.entered_figure:
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self.enter_notify_event(guiEvent=None, xy=(pos[0], pos[1]))
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self.entered_figure = False
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def enter_notify_event(self, guiEvent=None, xy=None):
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event = Event('figure_enter_event', self, guiEvent)
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self.callbacks.process('figure_enter_event', event)
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def leave_notify_event(self, guiEvent=None):
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event = Event('figure_leave_event', self, guiEvent)
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self.callbacks.process('figure_leave_event', event)
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def _on_pos_changed(self, *args):
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self.draw()
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def _on_size_changed(self, *args):
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'''Changes the size of the matplotlib figure based on the size of the
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widget. The widget will change size according to the parent Layout
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size.
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'''
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w, h = self.size
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dpival = self.figure.dpi
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winch = float(w) / dpival
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hinch = float(h) / dpival
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self.figure.set_size_inches(winch, hinch, forward=False)
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self.resize_event()
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self.draw()
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def callback(self, *largs):
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