Blitz - WPT: scroll-snap-initial-layout-000.html

wpt / css / css-scroll-snap / snap-after-initial-layout / scroll-snap-initial-layout-000.html

/css/css-scroll-snap/snap-after-initial-layout/scroll-snap-initial-layout-000.html

<!DOCTYPE html>
<title>
  On-screen vs. Off-screen Snapped Initial Scroll Position (Mandatory and Proximity)
</title>
<link rel="help" href="https://drafts.csswg.org/css-scroll-snap-1/#scroll-snap-align">
<link rel="help" href="https://drafts.csswg.org/css-scroll-snap/#re-snap">
<link rel="author" title="Elika J. Etemad" href="http://fantasai.inkedblade.net/contact">
<!-- Test assumes 2px proximity is enough to snap.
     If your implementation has a cogent argument as to why this is too much,
     please request a change to this test. ~fantasai -->
<link rel="match" href="scroll-snap-initial-layout-000-ref.html">

<style>
body {
  position: absolute;
  bottom: 0;
  top: 0;
  left: 0;
  right: 0;
  overflow: hidden;
}

.scroller {
  scroll-snap-type: both mandatory;
  overflow: hidden;
  scroll-padding: 0;
  width: 100px;
  height: 100px;
  border: solid blue;
  margin: 10px;
  display: inline-block;
}

.mandatory > .scroller {
  scroll-snap-type: both mandatory;
}

.proximity > .scroller {
  scroll-snap-type: both proximity;
}

.scroller > div {
  /* padding wrapper */
  width: 30px;
}

.scroller > div > div {
  /* target box */
  height: 30px;
  background: orange;
  scroll-snap-align: start;
}

.proxfar {
  border-color: orange;
}
.proxfar > div > div {
  background: red;
}

</style>

<p>Test passes if there is an orange square precisely at the top left corner of each blue box (no gap),
and each orange box is empty.


<div class="mandatory">
  <!-- off-screen -->
  <div class="scroller">
    <div style="padding: 110px;"><div class="small-target"></div></div>
  </div>

  <div class="scroller">
    <div style="padding-block: 110px;"><div class="small-target"></div></div>
  </div>

  <div class="scroller">
    <div style="padding-inline: 110px;"><div class="small-target"></div></div>
  </div>

  <!-- on-screen -->
  <div class="scroller">
    <div style="padding: 90px;"><div class="small-target"></div></div>
  </div>

  <div class="scroller">
    <div style="padding-block: 90px;"><div class="small-target"></div></div>
  </div>

  <div class="scroller">
    <div style="padding-inline: 90px;"><div class="small-target"></div></div>
  </div>
</div>

<div class="proximity">
  <!-- off-screen -->
  <div class="scroller proxfar">
    <div style="padding: 110px;"><div class="small-target"></div></div>
  </div>

  <div class="scroller proxfar">
    <div style="padding-block: 110px;"><div class="small-target"></div></div>
  </div>

  <div class="scroller proxfar">
    <div style="padding-inline: 110px;"><div class="small-target"></div></div>
  </div>

  <!-- on-screen -->
  <div class="scroller">
    <div style="padding: 2px 110px 110px 2px;"><div class="small-target"></div></div>
  </div>

  <div class="scroller">
    <div style="padding: 2px 110px 110px 2px;"><div class="small-target"></div></div>
  </div>

  <div class="scroller">
    <div style="padding: 2px 110px 110px 2px;"><div class="small-target"></div></div>
  </div>
</div>

/css/css-scroll-snap/snap-after-initial-layout/scroll-snap-initial-layout-000-ref.html

<!DOCTYPE html>
<title>
  CSS Scroll Snap Reference
</title>
<style>
body {
  position: absolute;
  bottom: 0;
  top: 0;
  left: 0;
  right: 0;
  overflow: hidden;
}

.scroller {
  width: 100px;
  height: 100px;
  border: solid blue;
  margin: 10px;
  display: inline-block;
}

.scroller > div {
  width: 30px;
  height: 30px;
  background: orange;
}

.proxfar {
  border-color: orange;
}

</style>

<p>Test passes if there is an orange square precisely at the top left corner of each blue box (no gap),
and each orange box is empty.


<div class="mandatory">
  <div class="scroller">
    <div></div>
  </div>

  <div class="scroller">
    <div></div>
  </div>

  <div class="scroller">
    <div></div>
  </div>

  <!-- on-screen -->
  <div class="scroller">
    <div></div>
  </div>

  <div class="scroller">
    <div></div>
  </div>

  <div class="scroller">
    <div></div>
  </div>
</div>

<div class="proximity">
  <!-- off-screen -->
  <div class="scroller proxfar">
  </div>

  <div class="scroller proxfar">
  </div>

  <div class="scroller proxfar">
  </div>

  <!-- on-screen -->
  <div class="scroller">
    <div></div>
  </div>

  <div class="scroller">
    <div></div>
  </div>

  <div class="scroller">
    <div></div>
  </div>
</div>