Auto merge of #12680 - Manishearth:basic-shape, r=SimonSapin

style: Add support for parsing and serialization of <basic-shape>s

Still WIP: I still need to use this somewhere and make serialization minimal. I'm not sure if I should do either in this PR.
The only other browser that handles basic shapes doesn't serialize correctly either (https://bugzilla.mozilla.org/show_bug.cgi?id=1290864), so that's not something we need to get done now.

As far as using this somewhere, I have the following options:

 - Merge this now, work on using it in stylo in a followup.
 - Just write extensive unit tests for parsing/serialization for now (stylo in a followup)
 - Use this for clip-path in stylo only (which I intend to do anyway, just not sure if I should do it in this PR)
 - Use this for clip-path in Servo (I'd rather not do this; this would be a huge change requiring a lot more layout knowledge than I currently have)

Thoughts? Review? @SimonSapin @bholley

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1 files changed, 2 insertions, 2 deletions

diff --git a/components/layout/display_list_builder.rs b/components/layout/display_list_builder.rs
index 58ff6d23e44..229f826b4e3 100644
--- a/components/layout/display_list_builder.rs
+++ b/components/layout/display_list_builder.rs
@@ -520,9 +520,9 @@ impl FragmentDisplayListBuilding for Fragment {
             };
 
             // Use `background-position` to get the offset.
-            let horizontal_position = model::specified(background.background_position.horizontal,
+            let horizontal_position = model::specified(background.background_position.0.horizontal,
                                                        bounds.size.width - image_size.width);
-            let vertical_position = model::specified(background.background_position.vertical,
+            let vertical_position = model::specified(background.background_position.0.vertical,
                                                      bounds.size.height - image_size.height);
 
             let abs_x = border.left + virtual_origin_x + horizontal_position + origin_x;