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