Commit 46166484 authored by Hiroyuki Ikezoe's avatar Hiroyuki Ikezoe
Browse files

Bug 1754129 - Factor out a function to collect APZTestData for the given element. r=botond 

Differential Revision: https://phabricator.services.mozilla.com/D138110
parent a9f82139

gfx/layers/apz/test/mochitest/apz_test_utils.js

+14 −0
Original line number Diff line number Diff line
@@ -1242,3 +1242,17 @@ async function cancelScrollAnimation(aElement, aWindow = window) { 
  aElement.style.display = originalStyle;

  await aWindow.promiseApzFlushedRepaints();

}



function collectSampledScrollOffsets(aElement) {

  let data = SpecialPowers.DOMWindowUtils.getCompositorAPZTestData();

  let sampledResults = data.sampledResults;



  const layersId = SpecialPowers.DOMWindowUtils.getLayersId();

  const scrollId = SpecialPowers.DOMWindowUtils.getViewId(aElement);



  return sampledResults.filter(

    result =>

      SpecialPowers.wrap(result).layersId == layersId &&

      SpecialPowers.wrap(result).scrollId == scrollId

  );

}

gfx/layers/apz/test/mochitest/helper_relative_scroll_smoothness.html

+1 −14
Original line number Diff line number Diff line
@@ -68,19 +68,6 @@ window.addEventListener("scroll", () => { 
}, { once: true });





function collectRootScrollOffsets() {

  let data = SpecialPowers.DOMWindowUtils.getCompositorAPZTestData();

  let sampledResults = data.sampledResults;



  const layersId = SpecialPowers.DOMWindowUtils.getLayersId();

  const scrollId = SpecialPowers.DOMWindowUtils.getViewId(document.scrollingElement);



  return sampledResults.filter(

    result => SpecialPowers.wrap(result).layersId == layersId &&

              SpecialPowers.wrap(result).scrollId == scrollId

  );

}



async function test() {

  // Once this content starts scrolling, it triggers a 100ms jank every 300ms so

  // sending arrow down keys for 1500ms will cause some jank.
@@ -110,7 +97,7 @@ async function test() { 
  // Stop the periodic expansions.

  clearInterval(intervalId);



  const records = collectRootScrollOffsets();

  const records = collectSampledScrollOffsets(document.scrollingElement);



  let previousRecord = { scrollOffsetY: 0, sampledTimeStamp: 0 };

  for (const record of records) {