def configurable_to_widget(text=None, name=None, spec=None, initval=None,
helptext=None, changed=None, textwidth=None, widgetwidth=None):
''' creates a widget and its handler, which calls function 'changed' on any change
'''
if textwidth is None:
textwidth = dp(280)
if widgetwidth is None:
widgetwidth = dp(150)
font_size = '16sp'
help_font_size = '15sp'
color = App.get_running_app().theme_cls.accent_color
bv = BoxLayout(padding=(dp(5), dp(5)), size_hint=(1, None), height=dp(60),
orientation='vertical')
bh = BoxLayout(size_hint=(1, .55))
bh.add_widget(Label(size_hint=(1, 1)))
bh.add_widget(LabelR(text=text, size_hint=(None, 1), width=textwidth, font_size=font_size))
if 'options' in spec:
opts = spec['options']
widget = Spinner(text=initval, values=spec['options'],
size_hint=(None, 1), width=widgetwidth, font_size=font_size)
widget.bind(text=partial(__option_changed, name, spec, changed))
bh.add_widget(widget)
bh.add_widget(Label(size_hint=(None, 1), width=widgetwidth))
elif 'boolean' in spec:
opts = spec['boolean'].keys()
# lookup names e.g. yes/no for true or false
val = {v: k for k, v in spec['boolean'].items()}[initval]
widget = Spinner(text=val, values=opts, size_hint=(None, 1), width=widgetwidth,
font_size=font_size)
widget.bind(text=partial(__boolean_changed, name, spec, changed))
bh.add_widget(widget)
bh.add_widget(Label(size_hint=(None, 1), width=widgetwidth))
elif 'switch' in spec:
widget = MDSwitch(size_hint=(None, 1), width=widgetwidth, active=initval,
pos_hint={'center_x': .5, 'center_y': .5})
widget.bind(active=partial(__switch_changed, name, spec, changed))
bh.add_widget(widget)
bh.add_widget(Label(size_hint=(None, 1), width=widgetwidth - dp(36)))
bh.add_widget(Label(size_hint=(None, 1), width=widgetwidth))
elif 'float' in spec:
fmt = spec.get('fmt', '{:.2f}')
slabel = LabelL(text=fmt.format(initval), size_hint=(None, 1), width=.7*widgetwidth,
font_size=font_size, color=color)
bh.add_widget(slabel)
smin, smax, step = spec['float']
widget = MDSlider(size_hint=(None, 1), width=1.3*widgetwidth,
step=step, min=smin, max=smax, value=float(initval))
widget.hint_bg_color=(.6,.6,.6,1)
widget._set_colors()
widget.bind(value=partial(__sfloat_changed, name, spec, slabel, fmt, changed))
bh.add_widget(widget)
elif 'double_slider_float' in spec:
fmt = spec.get('fmt', '{:.2f}')
slabel = LabelL(text=fmt.format(initval), size_hint=(None, 1),
width=.7*widgetwidth, font_size=font_size, color=color)
bh.add_widget(slabel)
smin, smax = spec['double_slider_float']
val1 = int(initval)
val2 = abs(initval - val1)
bh2 = BoxLayout(orientation='vertical', size_hint=(None, 1), width=1.3*widgetwidth)
slider1 = MDSlider(size_hint=(1, .5), width=widgetwidth,
step=1, min=smin, max=smax, value=val1)
slider2 = MDSlider(size_hint=(1, .5), width=widgetwidth,
step=.01, min=0, max=1, value=val2)
bh2.add_widget(slider1)
bh2.add_widget(slider2)
#slider1.hint_bg_color=(.6,.6,.6,1)
#slider1._set_colors()
slider1.bind(value=partial(
__dfloat_changed, name, spec, slabel, fmt, changed, slider1, slider2))
slider2.bind(value=partial(
__dfloat_changed, name, spec, slabel, fmt, changed, slider1, slider2))
bh.add_widget(bh2)
elif 'action' in spec:
widget = Button(text=spec['button'], size_hint=(None, 1), width=widgetwidth,
font_size=font_size)
widget.bind(on_press=partial(__action_pressed, name, spec, changed))
bh.add_widget(widget)
bh.add_widget(Label(size_hint=(None, 1), width=widgetwidth))
elif 'filechooser' in spec:
widget = Button(text='choose...', size_hint=(None, 1), width=widgetwidth,
font_size=font_size)
widget.bind(on_press=partial(__filechooser_pressed, name, spec, changed, initval))
bh.add_widget(widget)
bh.add_widget(Label(size_hint=(None, 1), width=widgetwidth))
bh.add_widget(Label(size_hint=(1, 1)))
# lower row contains only help text
blow = BoxLayout(size_hint=(1, .45))
blow.add_widget(Label(text=helptext, size_hint=(1, 1),
font_size=help_font_size, color=(.5, .5, .5, 1)))
bv.add_widget(bh)
bv.add_widget(blow)
return bv
