Commits on Sep 9, 2018

1. style: Make SVGPathData and clip-path: path() animatable. …

   Implement Animate trait for SVGPathData.
   
   The basic idea is: we normalize |this| and |other| svg paths, and then
   do interpolation on the normalized svg paths. The normalization is to
   convert relative coordinates into absolute coordinates, so we could do
   real number interpolation on each path command directly.
   
   In this patch, we also make |clip-path:path()| animatable.
   
   Differential Revision: https://phabricator.services.mozilla.com/D4786

   

   BorisChiou authored and emilio committed Sep 9, 2018
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2. style: Make offset-path: path() animatable. …

   Here, we change the animation type of offset-path as ComputedValue, so
   we could do animation on it. Also enable the wpt for offset-path
   interpolation. In test_transition_per_property.html, we add some basic tests
   ifor offset-path.
   
   ToAnimatedZero for PathCommand will be dropped later.
   
   Because the animations of arcs with mismatched flags are fallen back to
   discrete animations, the result of getComputedValue is not normalized in this
   case. This makes some wpt failed even though the progress is 100%.
   
   Depends on D4786
   
   Differential Revision: https://phabricator.services.mozilla.com/D4787

   

   BorisChiou authored and emilio committed Sep 9, 2018
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3. style: Use the standalone struct and enum for the flags in SVG path. …

   We define the standalone types for using derive macro easily and overriding
   the behaviors of this traits. This could avoid defining the general
   behavior of booleans.
   
   Depends on D4788
   
   Differential Revision: https://phabricator.services.mozilla.com/D4813

   

   BorisChiou authored and emilio committed Sep 9, 2018

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