## Checkbox
The CheckBox widget provides a control for user input in the form of a checkbox. It allows users to select or deselect options.

### Styling Attributes
#### draw_bg
- size (float)
- color_dither (float)
- color (Color)
- color_hover (Color)
- color_down (Color)
- color_active (Color)
- color_focus (Color)
- color_disabled (Color)
- color_1 (Color), color_2 (Color)
- color_1_hover (Color), color_2_hover (Color)
- color_1_down (Color), color_2_down (Color)
- color_1_active (Color), color_2_active (Color)
- color_1_focus (Color), color_2_focus (Color)
- color_1_disabled (Color), color_2_disabled (Color)
- border_size (float)
- border_radius (float)
- border_color_1 (Color)
- border_color_1_hover (Color)
- border_color_1_down (Color)
- border_color_1_active (Color)
- border_color_1_focus (Color)
- border_color_1_disabled (Color)
- border_color_2 (Color)
- border_color_2_hover (Color)
- border_color_2_down (Color)
- border_color_2_active (Color)
- border_color_2_focus (Color)
- border_color_2_disabled (Color)
- mark_size (float)
- mark_color (Color)
- mark_color_hover (Color)
- mark_color_down (Color)
- mark_color_active (Color)
- mark_color_active_hover (Color)
- mark_color_focus (Color)
- mark_color_disabled (Color)

#### draw_text
- color (Color)
- color_hover (Color)
- color_down (Color)
- color_focus (Color)
- color_active (Color)
- color_disabled (Color)
- text_style
    - font_size (float)
    - line_spacing (float)
    - font_family (FontFamilyId)

#### label_walk
- width (Size)
- height (Size)
- margin (Margin)

#### draw_icon
- color (Color)
- color_active (Color)
- color_disabled (Color)

#### icon_walk
- width (Size)
- height (Size)
- margin (Margin)