Bug 1374233 - Part 9: Add NonNegativeLengthOrPercentageOrNumber for stroke-{width|dasharry}.

Also add SVGWidth which use NonNegativeSVGLengthOrPercentage
as the LengthType for stroke-width.

MozReview-Commit-ID: 8gD0fVe2eAe

1 files changed, 11 insertions, 1 deletions

diff --git a/components/style/values/computed/svg.rs b/components/style/values/computed/svg.rs
index 9edc7a36220..43613baa8c4 100644
--- a/components/style/values/computed/svg.rs
+++ b/components/style/values/computed/svg.rs
@@ -7,6 +7,7 @@
 use app_units::Au;
 use values::{Either, RGBA};
 use values::computed::{LengthOrPercentageOrNumber, Opacity};
+use values::computed::{NonNegativeAu, NonNegativeLengthOrPercentageOrNumber};
 use values::generics::svg as generic;
 
 /// Computed SVG Paint value
@@ -43,8 +44,17 @@ impl From<Au> for SVGLength {
     }
 }
 
+/// An non-negative wrapper of SVGLength.
+pub type SVGWidth = generic::SVGLength<NonNegativeLengthOrPercentageOrNumber>;
+
+impl From<NonNegativeAu> for SVGWidth {
+    fn from(length: NonNegativeAu) -> Self {
+        generic::SVGLength::Length(Either::Second(length.into()))
+    }
+}
+
 /// [ <length> | <percentage> | <number> ]# | context-value
-pub type SVGStrokeDashArray = generic::SVGStrokeDashArray<LengthOrPercentageOrNumber>;
+pub type SVGStrokeDashArray = generic::SVGStrokeDashArray<NonNegativeLengthOrPercentageOrNumber>;
 
 impl Default for SVGStrokeDashArray {
     fn default() -> Self {