layout/reftests/transform/partial-prerender-expansion-with-resolution-1.html

   1 <!DOCTYPE html>
   2 <html class="reftest-wait reftest-no-flush" reftest-resolution="0.5">
   3 <meta name="viewport" content="width=device-width,minimum-scale=0.5,initial-scale=1">
   4 <!--
   5   A test for a partial pre-rendered transform animation with <1.0 resolution.
   6   -->
   7 <style>
   8 html {
   9   scrollbar-width: none;
  10 }
  11 body {
  12   margin: 0px;
  13   padding: 0px;
  14 }
  15 @keyframes anim {
  16   /* The reftest window size is (800x1000) and it's scaled by 0.5             */
  17   /* (= 1600x2000), which means the partial pre-render size is (2250x2250) so */
  18   /* move to a position inside the pre-render area and away from the          */
  19   /* pre-render right edge, translateX(-650px), so that we can avoid blurry   */
  20   /* edges in comparison with the reference.                                  */
  21   to { transform: translateX(-400px); }
  22 }
  23 #target {
  24   width: 4000px;
  25   height: 4000px;
  26   position: absolute;
  27   transform: translateX(0px);
  28 }
  29 </style>
  30 <div id="target">
  31   <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 4000 4000">
  32     <rect fill="green" x="0"    width="1600" height="4000"></rect>
  33     <rect fill="blue"  x="1600" width="650"  height="4000"></rect>
  34     <rect fill="red"   x="2250" width="1750" height="4000"></rect>
  35   </svg>
  36 </div>
  37 <script>
  38 document.addEventListener("MozReftestInvalidate", () => {
  39   target.style.animation = "anim 100s 1s step-start";
  40   target.addEventListener("animationstart", () => {
  41     // animationstart event is fired just before requestAnimationFrame callbacks,
  42     // so we need to wait two rAF to make sure the initial animation value is
  43     // composited on the compositor.
  44     requestAnimationFrame(() => {
  45       requestAnimationFrame(() => {
  46         document.documentElement.classList.remove("reftest-wait");
  47       });
  48     });
  49   });
  50 }, { once: true });
  51 </script>
  52 </html>