PeriodSelectorPM_Stylesheet.yaml

A time picker's AM / PM selector, with PM selected.

The look of PeriodSelectorPM (in Time picker). How component stylesheets work.

The stylesheet

# PeriodSelectorPM: the look of each part of the component, by the part's id.
# A value in {{ }} is one of the component's parameters.
styles:
  - id: root
    style:
      flex_direction: vertical
      width: 52
      height: 72
  - id: am
    style:
      width: 52
      height: 36
      background: transparent
      corner_radius: small
      align_content: center
  - id: am_label
    style:
      foreground: on_surface
  - id: pm
    style:
      width: 52
      height: 36
      background: tertiary_container
      corner_radius: small
      align_content: center
  - id: pm_label
    style:
      foreground: on_tertiary_container

How it is tied to the component

PeriodSelectorPM_Component.yaml holds the structure: the parts, each with an id. This file holds the look: each rule's id names a part, and its style is what that part looks like. When a view uses component: PeriodSelectorPM, Tesserae fills in the parameters (a value like "{{ width }}" becomes the width the view passed), picks a branch of any if:, and puts each rule under the style the part already has, so a part's own style: always wins.

The parts

root (Container)

Field	Value	What it does
flex_direction	vertical	How its children are laid out: horizontal (the default) or vertical.
width	52	Pixels, auto (its content's size, or stretched), or a percentage of the parent such as 50%.
height	72	Pixels, auto (its content's size, or stretched), or a percentage of the parent such as 50%.

am (Container)

Field	Value	What it does
width	52	Pixels, auto (its content's size, or stretched), or a percentage of the parent such as 50%.
height	36	Pixels, auto (its content's size, or stretched), or a percentage of the parent such as 50%.
background	transparent	Its fill: a theme role such as surface, #RRGGBB, any CSS colour, or a gradient such as linear-gradient(90deg, primary, tertiary).
corner_radius	small	Pixels, or a shape token (none to extra_large, or full for a pill or circle). Per corner: a list [top_left, top_right, bottom_right, bottom_left], or a mapping of corners and edges (top, right, bottom, left) with the rest square.
align_content	center	Where its children sit: top_left, top, top_right, left, center, right, bottom_left, bottom or bottom_right. Not set, they fill the space across the layout.

am_label (Text)

Field	Value	What it does
foreground	on_surface	Its text or glyph colour: a theme role, #RRGGBB, any CSS colour, or a gradient.

pm (Container)

Field	Value	What it does
width	52	Pixels, auto (its content's size, or stretched), or a percentage of the parent such as 50%.
height	36	Pixels, auto (its content's size, or stretched), or a percentage of the parent such as 50%.
background	tertiary_container	Its fill: a theme role such as surface, #RRGGBB, any CSS colour, or a gradient such as linear-gradient(90deg, primary, tertiary).
corner_radius	small	Pixels, or a shape token (none to extra_large, or full for a pill or circle). Per corner: a list [top_left, top_right, bottom_right, bottom_left], or a mapping of corners and edges (top, right, bottom, left) with the rest square.
align_content	center	Where its children sit: top_left, top, top_right, left, center, right, bottom_left, bottom or bottom_right. Not set, they fill the space across the layout.

pm_label (Text)

Field	Value	What it does
foreground	on_tertiary_container	Its text or glyph colour: a theme role, #RRGGBB, any CSS colour, or a gradient.

What it makes

With ``, each part's style is:

root: {flex_direction: vertical, width: 52, height: 72}
am: {width: 52, height: 36, background: transparent, corner_radius: small, align_content: center}
am_label: {foreground: on_surface}
pm: {width: 52, height: 36, background: tertiary_container, corner_radius: small, align_content: center}
pm_label: {foreground: on_tertiary_container}

Changing it

Put a PeriodSelectorPM_Stylesheet.yaml next to your views. Its rules go over this file's, field by field:

styles:
  - id: am
    style: {background: tertiary}