"""
From Google Guidelines :
Single-line SnackBar height: 48dp
Multi-line SnackBar height: 80dp
Text: Roboto Regular 14sp
Action button: Roboto Medium 14sp, all-caps text
Default background fill: #323232 100%
"""
from kivy.clock import Clock
from kivy.core.window import Window
from kivy.lang import Builder
from kivy.metrics import dp
from kivy.properties import *
from kivy.uix.label import Label
from pkg_resources import resource_filename
path = resource_filename( __name__, 'various.kv' )
Builder.load_file( path )
from . import labels
class SnackBar( labels.BindedLabel ) :
'''
Material UI SnackBar.
'''
alpha = NumericProperty( 1 )
duration_short = NumericProperty( 2000 )
duration_long = NumericProperty( 3500 )
def __init__( self, **kargs ) :
self._bound = False
super( SnackBar, self ).__init__( **kargs )
self.color = [ 1, 1, 1, 1 ]
self.fill_color = [ .1961, .1961, .1961, self.alpha ]
self.size_hint = 1, None
self.height = dp(80) if '\n' in self.text else dp(48)
def show( self, isLong, *args ) :
duration = self.duration_long if isLong else self.duration_short
timeout_down = duration * 0.1
if timeout_down > 500 : timeout_down = 500
if timeout_down < 100 : timeout_down = 100
self._timeout_down = timeout_down
self._duration = duration - timeout_down
Window.add_widget(self)
Clock.schedule_interval(self.animate, 1/60.0)
def realign( self, window, size ) :
self.x = (size[0] - self.width) / 2.0
self.y = size[1] * 0.1
def animate( self, dt ) :
self._duration -= dt * 1000
if self._duration <= 0:
self.alpha = 1.0 + (self._duration / self._timeout_down)
if -(self._duration) > self._timeout_down:
Window.remove_widget(self)
return False
self.fill_color = [ .1961, .1961, .1961, self.alpha ]
"""
def do_toast( text, **kargs ):
isLong = kargs['isLong'] if 'isLong' in kargs.keys() else False
Toast( text=text, **kargs ).show( isLong )
"""
def do_snack( text, **kargs ):
isLong = kargs['isLong'] if 'isLong' in kargs.keys() else False
SnackBar( text=text, **kargs ).show( isLong )
