386 lines
11 KiB
Python
Executable file
386 lines
11 KiB
Python
Executable file
"""
|
|
Components/Slider
|
|
=================
|
|
|
|
.. seealso::
|
|
|
|
`Material Design spec, Sliders <https://material.io/components/sliders>`_
|
|
|
|
.. rubric:: Sliders allow users to make selections from a range of values.
|
|
|
|
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/slider.png
|
|
:align: center
|
|
|
|
With value hint
|
|
---------------
|
|
|
|
.. code-block:: python
|
|
|
|
from kivy.lang import Builder
|
|
|
|
from kivymd.app import MDApp
|
|
|
|
KV = '''
|
|
Screen
|
|
|
|
MDSlider:
|
|
min: 0
|
|
max: 100
|
|
value: 40
|
|
'''
|
|
|
|
|
|
class Test(MDApp):
|
|
def build(self):
|
|
return Builder.load_string(KV)
|
|
|
|
|
|
Test().run()
|
|
|
|
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/slider-1.gif
|
|
:align: center
|
|
|
|
Without value hint
|
|
------------------
|
|
|
|
.. code-block:: kv
|
|
|
|
MDSlider:
|
|
min: 0
|
|
max: 100
|
|
value: 40
|
|
hint: False
|
|
|
|
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/slider-2.gif
|
|
:align: center
|
|
|
|
Without custom color
|
|
--------------------
|
|
|
|
.. code-block:: kv
|
|
|
|
MDSlider:
|
|
min: 0
|
|
max: 100
|
|
value: 40
|
|
hint: False
|
|
humb_color_down: app.theme_cls.accent_color
|
|
|
|
.. image:: https://github.com/HeaTTheatR/KivyMD-data/raw/master/gallery/kivymddoc/slider-3.png
|
|
:align: center
|
|
"""
|
|
|
|
__all__ = ("MDSlider",)
|
|
|
|
from kivy.lang import Builder
|
|
from kivy.metrics import dp
|
|
from kivy.properties import (
|
|
AliasProperty,
|
|
BooleanProperty,
|
|
ListProperty,
|
|
NumericProperty,
|
|
)
|
|
from kivy.uix.slider import Slider
|
|
from kivy.utils import get_color_from_hex
|
|
|
|
from kivymd.color_definitions import colors
|
|
from kivymd.theming import ThemableBehavior
|
|
|
|
Builder.load_string(
|
|
"""
|
|
#:import images_path kivymd.images_path
|
|
|
|
|
|
<MDSlider>
|
|
id: slider
|
|
canvas:
|
|
Clear
|
|
Color:
|
|
rgba:
|
|
self._track_color_disabled if self.disabled \
|
|
else (self._track_color_active if self.active \
|
|
else self._track_color_normal)
|
|
Rectangle:
|
|
size:
|
|
(self.width - self.padding * 2 - self._offset[0], dp(4)) if \
|
|
self.orientation == "horizontal" \
|
|
else (dp(4),self.height - self.padding*2 - self._offset[1])
|
|
pos:
|
|
(self.x + self.padding + self._offset[0], self.center_y - dp(4)) \
|
|
if self.orientation == "horizontal" else \
|
|
(self.center_x - dp(4), self.y + self.padding + self._offset[1])
|
|
|
|
# If 0 draw circle
|
|
Color:
|
|
rgba:
|
|
(0, 0, 0, 0) if not self._is_off \
|
|
else (self._track_color_disabled if self.disabled \
|
|
else (self._track_color_active \
|
|
if self.active else self._track_color_normal))
|
|
Line:
|
|
width: 2
|
|
circle:
|
|
(self.x + self.padding + dp(3), self.center_y - dp(2), 8 \
|
|
if self.active else 6 ) if self.orientation == "horizontal" \
|
|
else (self.center_x - dp(2), self.y + self.padding + dp(3), 8 \
|
|
if self.active else 6)
|
|
|
|
Color:
|
|
rgba:
|
|
(0, 0, 0, 0) if self._is_off \
|
|
else (self.thumb_color_down if not self.disabled \
|
|
else self._track_color_disabled)
|
|
Rectangle:
|
|
size:
|
|
((self.width - self.padding * 2) * self.value_normalized, sp(4)) \
|
|
if slider.orientation == "horizontal" else (sp(4), \
|
|
(self.height - self.padding * 2) * self.value_normalized)
|
|
pos:
|
|
(self.x + self.padding, self.center_y - dp(4)) \
|
|
if self.orientation == "horizontal" \
|
|
else (self.center_x - dp(4), self.y + self.padding)
|
|
|
|
Thumb:
|
|
id: thumb
|
|
size_hint: None, None
|
|
size:
|
|
(dp(12), dp(12)) if root.disabled else ((dp(24), dp(24)) \
|
|
if root.active else (dp(16), dp(16)))
|
|
pos:
|
|
(slider.value_pos[0] - dp(8), slider.center_y - thumb.height / 2 - dp(2)) \
|
|
if slider.orientation == "horizontal" \
|
|
else (slider.center_x - thumb.width / 2 - dp(2), \
|
|
slider.value_pos[1] - dp(8))
|
|
color:
|
|
(0, 0, 0, 0) if slider._is_off else (root._track_color_disabled \
|
|
if root.disabled else root.thumb_color_down)
|
|
elevation:
|
|
0 if slider._is_off else (4 if root.active else 2)
|
|
|
|
MDCard:
|
|
id: hint_box
|
|
size_hint: None, None
|
|
md_bg_color: (1, 1, 1, 1) if not root.hint_bg_color else slider.hint_bg_color
|
|
elevation: 0
|
|
opacity: 1 if slider.active else 0
|
|
background: f"{images_path}transparent.png"
|
|
radius: [slider.hint_radius,]
|
|
size:
|
|
(dp(12), dp(12)) if root.disabled else ((dp(28), dp(28)) \
|
|
if root.active else (dp(20), dp(20)))
|
|
pos:
|
|
(slider.value_pos[0] - dp(9), slider.center_y - hint_box.height / 2 + dp(30)) \
|
|
if slider.orientation == "horizontal" \
|
|
else (slider.center_x - hint_box.width / 2 + dp(30), \
|
|
slider.value_pos[1] - dp(8))
|
|
|
|
MDLabel:
|
|
text: str(int(slider.value))
|
|
font_style: "Caption"
|
|
halign: "center"
|
|
theme_text_color: "Custom"
|
|
text_color:
|
|
(root.thumb_color_down if root.active else (0, 0, 0, 0)) \
|
|
if not slider.hint_text_color else slider.hint_text_color
|
|
"""
|
|
)
|
|
|
|
|
|
class MDSlider(ThemableBehavior, Slider):
|
|
active = BooleanProperty(False)
|
|
"""
|
|
If the slider is clicked.
|
|
|
|
:attr:`active` is an :class:`~kivy.properties.BooleanProperty`
|
|
and defaults to `False`.
|
|
"""
|
|
|
|
hint = BooleanProperty(True)
|
|
"""
|
|
If True, then the current value is displayed above the slider.
|
|
|
|
:attr:`hint` is an :class:`~kivy.properties.BooleanProperty`
|
|
and defaults to `True`.
|
|
"""
|
|
|
|
hint_bg_color = ListProperty()
|
|
"""
|
|
Hint rectangle color in ``rgba`` format.
|
|
|
|
:attr:`hint_bg_color` is an :class:`~kivy.properties.ListProperty`
|
|
and defaults to `[]`.
|
|
"""
|
|
|
|
hint_text_color = ListProperty()
|
|
"""
|
|
Hint text color in ``rgba`` format.
|
|
|
|
:attr:`hint_text_color` is an :class:`~kivy.properties.ListProperty`
|
|
and defaults to `[]`.
|
|
"""
|
|
|
|
hint_radius = NumericProperty(4)
|
|
"""
|
|
Hint radius.
|
|
|
|
:attr:`hint_radius` is an :class:`~kivy.properties.NumericProperty`
|
|
and defaults to `4`.
|
|
"""
|
|
|
|
show_off = BooleanProperty(True)
|
|
"""
|
|
Show the `'off'` ring when set to minimum value.
|
|
|
|
:attr:`show_off` is an :class:`~kivy.properties.BooleanProperty`
|
|
and defaults to `True`.
|
|
"""
|
|
|
|
# Internal state of ring
|
|
_is_off = BooleanProperty(False)
|
|
|
|
# Internal adjustment to reposition sliders for ring
|
|
_offset = ListProperty((0, 0))
|
|
|
|
_thumb_color = ListProperty(get_color_from_hex(colors["Gray"]["50"]))
|
|
|
|
def _get_thumb_color(self):
|
|
return self._thumb_color
|
|
|
|
def _set_thumb_color(self, color, alpha=None):
|
|
if len(color) == 2:
|
|
self._thumb_color = get_color_from_hex(colors[color[0]][color[1]])
|
|
if alpha:
|
|
self._thumb_color[3] = alpha
|
|
elif len(color) == 4:
|
|
self._thumb_color = color
|
|
|
|
thumb_color = AliasProperty(
|
|
_get_thumb_color, _set_thumb_color, bind=["_thumb_color"]
|
|
)
|
|
"""
|
|
Current color slider in ``rgba`` format.
|
|
|
|
:attr:`thumb_color` is an :class:`~kivy.properties.AliasProperty` that
|
|
returns the value of the current color slider, property is readonly.
|
|
"""
|
|
|
|
_thumb_color_down = ListProperty([1, 1, 1, 1])
|
|
|
|
def _get_thumb_color_down(self):
|
|
return self._thumb_color_down
|
|
|
|
def _set_thumb_color_down(self, color, alpha=None):
|
|
if len(color) == 2:
|
|
self._thumb_color_down = get_color_from_hex(
|
|
colors[color[0]][color[1]]
|
|
)
|
|
if alpha:
|
|
self._thumb_color_down[3] = alpha
|
|
else:
|
|
self._thumb_color_down[3] = 1
|
|
elif len(color) == 4:
|
|
self._thumb_color_down = color
|
|
|
|
_thumb_color_disabled = ListProperty(
|
|
get_color_from_hex(colors["Gray"]["400"])
|
|
)
|
|
|
|
def _get_thumb_color_disabled(self):
|
|
return self._thumb_color_disabled
|
|
|
|
def _set_thumb_color_disabled(self, color, alpha=None):
|
|
if len(color) == 2:
|
|
self._thumb_color_disabled = get_color_from_hex(
|
|
colors[color[0]][color[1]]
|
|
)
|
|
if alpha:
|
|
self._thumb_color_disabled[3] = alpha
|
|
elif len(color) == 4:
|
|
self._thumb_color_disabled = color
|
|
|
|
thumb_color_down = AliasProperty(
|
|
_get_thumb_color_disabled,
|
|
_set_thumb_color_disabled,
|
|
bind=["_thumb_color_disabled"],
|
|
)
|
|
"""
|
|
Color slider in ``rgba`` format.
|
|
|
|
:attr:`thumb_color_down` is an :class:`~kivy.properties.AliasProperty`
|
|
that returns and set the value of color slider.
|
|
"""
|
|
|
|
_track_color_active = ListProperty()
|
|
_track_color_normal = ListProperty()
|
|
_track_color_disabled = ListProperty()
|
|
_thumb_pos = ListProperty([0, 0])
|
|
|
|
def __init__(self, **kwargs):
|
|
super().__init__(**kwargs)
|
|
self.theme_cls.bind(
|
|
theme_style=self._set_colors,
|
|
primary_color=self._set_colors,
|
|
primary_palette=self._set_colors,
|
|
)
|
|
self._set_colors()
|
|
|
|
def on_hint(self, instance, value):
|
|
if not value:
|
|
self.remove_widget(self.ids.hint_box)
|
|
|
|
def _set_colors(self, *args):
|
|
if self.theme_cls.theme_style == "Dark":
|
|
self._track_color_normal = get_color_from_hex("FFFFFF")
|
|
self._track_color_normal[3] = 0.3
|
|
self._track_color_active = self._track_color_normal
|
|
self._track_color_disabled = self._track_color_normal
|
|
self.thumb_color = get_color_from_hex(colors["Gray"]["400"])
|
|
self.thumb_color_down = get_color_from_hex(
|
|
colors[self.theme_cls.primary_palette]["200"]
|
|
)
|
|
self.thumb_color_disabled = get_color_from_hex(
|
|
colors["Gray"]["800"]
|
|
)
|
|
else:
|
|
self._track_color_normal = get_color_from_hex("000000")
|
|
self._track_color_normal[3] = 0.26
|
|
self._track_color_active = get_color_from_hex("000000")
|
|
self._track_color_active[3] = 0.38
|
|
self._track_color_disabled = get_color_from_hex("000000")
|
|
self._track_color_disabled[3] = 0.26
|
|
self.thumb_color_down = self.theme_cls.primary_color
|
|
|
|
def on_value_normalized(self, *args):
|
|
"""When the ``value == min`` set it to `'off'` state and make slider
|
|
a ring.
|
|
"""
|
|
|
|
self._update_is_off()
|
|
|
|
def on_show_off(self, *args):
|
|
self._update_is_off()
|
|
|
|
def _update_is_off(self):
|
|
self._is_off = self.show_off and (self.value_normalized == 0)
|
|
|
|
def on__is_off(self, *args):
|
|
self._update_offset()
|
|
|
|
def on_active(self, *args):
|
|
self._update_offset()
|
|
|
|
def _update_offset(self):
|
|
"""Offset is used to shift the sliders so the background color
|
|
shows through the off circle.
|
|
"""
|
|
|
|
d = 2 if self.active else 0
|
|
self._offset = (dp(11 + d), dp(11 + d)) if self._is_off else (0, 0)
|
|
|
|
def on_touch_down(self, touch):
|
|
if super().on_touch_down(touch):
|
|
self.active = True
|
|
|
|
def on_touch_up(self, touch):
|
|
if super().on_touch_up(touch):
|
|
self.active = False
|