[SVGDom] Add 'visibility' support

https://www.w3.org/TR/SVG/painting.html#VisibilityProperty

Change-Id: I8b872af26150d93cf39cf8eeba23c91e1decace3
Reviewed-on: https://skia-review.googlesource.com/58863
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>

1 files changed, 24 insertions, 0 deletions

diff --git a/experimental/svg/model/SkSVGTypes.h b/experimental/svg/model/SkSVGTypes.h
index c83fd7d10b..4a300b6e3c 100644
--- a/experimental/svg/model/SkSVGTypes.h
+++ b/experimental/svg/model/SkSVGTypes.h
@@ -248,4 +248,28 @@ private:
     Type fType;
 };
 
+class SkSVGVisibility {
+public:
+    enum class Type {
+        kVisible,
+        kHidden,
+        kCollapse,
+        kInherit,
+    };
+
+    constexpr SkSVGVisibility() : fType(Type::kVisible) {}
+    constexpr explicit SkSVGVisibility(Type t) : fType(t) {}
+
+    SkSVGVisibility(const SkSVGVisibility&)            = default;
+    SkSVGVisibility& operator=(const SkSVGVisibility&) = default;
+
+    bool operator==(const SkSVGVisibility& other) const { return fType == other.fType; }
+    bool operator!=(const SkSVGVisibility& other) const { return !(*this == other); }
+
+    Type type() const { return fType; }
+
+private:
+    Type fType;
+};
+
 #endif // SkSVGTypes_DEFINED