amp-story-grid-layer

The <amp-story-grid-layer> component lays its children out into a grid. Its implementation is based off of the CSS Grid Spec.

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Attributes

template [required]

The template attribute determines the layout of the grid layer. Available templates are described in the Templates section below.

grid-area [optional]

This attribute is specified on children of <amp-story-grid-layer>. grid-area specifies the named area (from using a template that defines them) in which the element containing this attribute should appear.

Example:

<amp-story-grid-layer template="thirds">
  <p grid-area="middle-third">Element 1</p>
  <p grid-area="lower-third">Element 2</p>
  <p grid-area="upper-third">Element 3</p>
</amp-story-grid-layer>

aspect-ratio [optional]

The value specifies an aspect ratio in the "horizontal:vertical" format, where both "horizontal" and "vertical" are integer numbers. If this attribute is specified, the layout of the grid layer is set to conform to the specified proportions. The font size, in this case, is automatically set to the 1/10th of the resulting height to enable proportional content scaling.

Example:

<amp-story-grid-layer aspect-ratio="9:16" template="vertical">
  <div style="width: 10%; height: 10%; font-size: 2em;">
    This block will be in 9:16 aspect ratio and font size will be set at the 20%
    of the layer's height.
  </div>
</amp-story-grid-layer>

Templates

The following are available templates to specify for the layout of the grid layer.

fill

The fill template shows its first child full bleed. All other children are not shown.

Names Areas: (none)

Example:

<amp-story-grid-layer template="fill">
  <amp-img src="cat.jpg"></amp-img>
</amp-story-grid-layer>

vertical

The vertical template lays its elements out along the y-axis. By default, its elements are aligned to the top, and can take up the entirety of the screen along the x-axis.

Names Areas: (none)

<amp-story-grid-layer template="vertical">
  <p>Element 1</p>
  <p>Element 2</p>
  <p>Element 3</p>
</amp-story-grid-layer>

horizontal

The horizontal template lays its elements out along the x-axis. By default, its elements are aligned to the start of the line and can take up the entirety of the screen along the y-axis.

Names Areas: (none)

<amp-story-grid-layer template="horizontal">
  <p>Element 1</p>
  <p>Element 2</p>
  <p>Element 3</p>
</amp-story-grid-layer>

thirds

The thirds template divides the screen into three equally-sized rows, and allows you to slot content into each area.

Named Areas:

• upper-third
• middle-third
• lower-third

<amp-story-grid-layer template="thirds">
  <p grid-area="middle-third">Element 1</p>
  <p grid-area="lower-third">Element 2</p>
  <p grid-area="upper-third">Element 3</p>
</amp-story-grid-layer>

Children

An amp-story-grid-layer can contain any of the following elements:

Note: This list will be expanded over time.

Pre templated UI

Landscape half-half UI

The landscape half-half pre templated UI will resize the <amp-story-grid-layer> element to take half of the screen rather than the full screen, and be positioned either on the half left or half right of the viewport. This attribute only affects landscape viewports, and is ignored on portrait viewports. This template makes it easier to design full bleed landscape stories: splitting the screen in two halves gives each half a portrait ratio on most devices, allowing re-using the portrait assets, design, and templates already built for portrait stories.

The position attribute on the <amp-story-grid-layer> element accepts two values: landscape-half-left or landscape-half-right.

Example:

<amp-story-page id="foo">
  <amp-story-grid-layer template="fill" position="landscape-half-left">
    <amp-img src="cat.jpg"></amp-img>
  </amp-story-grid-layer>
  <amp-story-grid-layer template="vertical" position="landscape-half-right">
    <h2>Cat ipsum dolor sit amet...</h2>
  </amp-story-grid-layer>
</amp-story-page>