class BasePressedButton(BaseButton):
'''
Abstract base class for those button which fade to a background color on
press.
'''
def on_touch_down(self, touch):
if touch.is_mouse_scrolling:
return False
elif not self.collide_point(touch.x, touch.y):
return False
elif self in touch.ud:
return False
elif self.disabled:
return False
else:
self.fade_bg = \
Animation(duration=.5,
_current_button_color=self.md_bg_color_down)
self.fade_bg.start(self)
return super(BaseButton, self).on_touch_down(touch)
def on_touch_up(self, touch):
if touch.grab_current is self:
self.fade_bg.stop_property(self, '_current_button_color')
Animation(duration=.05,
_current_button_color=self.md_bg_color).start(self)
return super(BaseButton, self).on_touch_up(touch)
class BasePressedButton(BaseButton):
"""
Abstract base class for those button which fade to a background color on
press.
"""
_fade_bg = None
def on_touch_down(self, touch):
if touch.is_mouse_scrolling:
return False
elif not self.collide_point(touch.x, touch.y):
return False
elif self in touch.ud:
return False
elif self.disabled:
return False
else:
# Button dimming animation.
if self.md_bg_color == [0.0, 0.0, 0.0, 0.0]:
self._fade_bg = Animation(
duration=0.5, _current_button_color=self._md_bg_color_down
)
self._fade_bg.start(self)
return super().on_touch_down(touch)
def on_touch_up(self, touch):
if touch.grab_current is self and self._fade_bg:
self._fade_bg.stop_property(self, "_current_button_color")
Animation(
duration=0.05, _current_button_color=self.md_bg_color
).start(self)
return super().on_touch_up(touch)
class BasePressedButton(BaseButton):
'''
Abstract base class for those button which fade to a background color on
press.
'''
def on_touch_down(self, touch):
if touch.is_mouse_scrolling:
return False
elif not self.collide_point(touch.x, touch.y):
return False
elif self in touch.ud:
return False
elif self.disabled:
return False
else:
self.fade_bg = Animation(duration=.5,
_current_button_color=self.md_bg_color_down)
self.fade_bg.start(self)
return super(BaseButton, self).on_touch_down(touch)
def on_touch_up(self, touch):
if touch.grab_current is self:
self.fade_bg.stop_property(self, '_current_button_color')
Animation(duration=.05,
_current_button_color=self.md_bg_color).start(self)
return super(BaseButton, self).on_touch_up(touch)
class PopScrollBut(Button):
fade_bg = ObjectProperty(None)
bg_color_down = ListProperty([0.0, 0.0, 0.0, 0.0])
bg_color = ListProperty([0.0, 0.0, 0.0, 0.0])
def on_touch_down(self, touch):
self.bg_color_down = App.get_running_app().theme_cls.bg_light
self.bg_color = self.background_color
if touch.is_mouse_scrolling:
return False
elif not self.collide_point(touch.x, touch.y):
return False
elif self in touch.ud:
return False
elif self.disabled:
return False
else:
self.fade_bg = Animation(duration=0.5,
background_color=self.bg_color_down)
self.fade_bg.start(self)
return super().on_touch_down(touch)
def on_touch_up(self, touch):
if touch.grab_current is self:
self.fade_bg.stop_property(self, "background_color")
Animation(duration=0.05,
background_color=self.bg_color).start(self)
return super().on_touch_up(touch)
class MDFlatButton(ThemableBehavior, RectangularRippleBehavior, ButtonBehavior,
BackgroundColorBehavior, AnchorLayout):
width = BoundedNumericProperty(dp(64),
min=dp(64),
max=None,
errorhandler=lambda x: dp(64))
text_color = ListProperty()
text = StringProperty('')
theme_text_color = OptionProperty(
None,
allownone=True,
options=['Primary', 'Secondary', 'Hint', 'Error', 'Custom'])
text_color = ListProperty(None, allownone=True)
_text = StringProperty('')
_bg_color_down = ListProperty([0, 0, 0, 0])
_current_button_color = ListProperty([0, 0, 0, 0])
def __init__(self, **kwargs):
super(MDFlatButton, self).__init__(**kwargs)
self._current_button_color = self.background_color
self._bg_color_down = get_color_from_hex(
colors[self.theme_cls.theme_style]['FlatButtonDown'])
Clock.schedule_once(lambda x: self.ids._label.bind(
texture_size=self.update_width_on_label_texture))
def update_width_on_label_texture(self, instance, value):
self.ids._label.width = value[0]
def on_text(self, instance, value):
self._text = value.upper()
def on_touch_down(self, touch):
if touch.is_mouse_scrolling:
return False
elif not self.collide_point(touch.x, touch.y):
return False
elif self in touch.ud:
return False
elif self.disabled:
return False
else:
self.fade_bg = Animation(
duration=.2,
_current_button_color=get_color_from_hex(
colors[self.theme_cls.theme_style]['FlatButtonDown']))
self.fade_bg.start(self)
return super(MDFlatButton, self).on_touch_down(touch)
def on_touch_up(self, touch):
if touch.grab_current is self:
self.fade_bg.stop_property(self, '_current_button_color')
Animation(duration=.05,
_current_button_color=self.background_color).start(self)
return super(MDFlatButton, self).on_touch_up(touch)
class TestLayout(FloatLayout):
# create and start two animations
def start_animations(self):
self.anim1 = Animation(font_size=200, d=5)
self.anim2 = Animation(color=[0, 1, 0, 1],
outline_width=20,
outline_color=[1, 0, 0, 1],
d=5)
self.anim1.start(self.label)
self.anim2.start(self.label)
# stop both animations
def stop_all_animations(self):
Animation.stop_all(self.label)
# stop animating just the two color properties from the second animation
def stop_color_animations(self):
Animation.stop_all(self.label, 'color', 'outline_color')
# stop animating the outline_width property from the second animation
def stop_outline_animation(self):
self.anim2.stop_property(self.label, 'outline_width')
