First Implementation of Snapped Points

third_party/WebKit/Source/core/style/ScrollSnapPoints.h

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ScrollSnapPoints_h
 #define ScrollSnapPoints_h
 
 #include <memory>
 #include "platform/Length.h"
 
@@ skipping 12 matching lines @@
   }
   bool operator!=(const ScrollSnapPoints& other) const {
     return !(*this == other);
   }
 
   Length repeat_offset;
   bool has_repeat;
   bool uses_elements;
 };
 
+struct ScrollSnapType {
+  DISALLOW_NEW();
+
+  ScrollSnapType()
+      : axis(kSnapAxisNone), strictness(kSnapStrictnessProximity) {}
+
+  bool operator==(const ScrollSnapType& other) const {
+    return axis == other.axis && strictness == other.strictness;
+  }
+
+  bool operator!=(const ScrollSnapType& other) const {
+    return !(*this == other);
+  }
+
+  SnapAxis axis;
+  SnapStrictness strictness;
+};
+
+struct ScrollSnapAlign {
+  DISALLOW_NEW();
+
+  ScrollSnapAlign()
+      : alignmentX(kSnapAlignmentNone), alignmentY(kSnapAlignmentNone) {}
+
+  bool operator==(const ScrollSnapAlign& other) const {
+    return alignmentX == other.alignmentX && alignmentY == other.alignmentY;
+  }
+
+  bool operator!=(const ScrollSnapAlign& other) const {
+    return !(*this == other);
+  }
+
+  SnapAlignment alignmentX;
+  SnapAlignment alignmentY;
+};
+
+struct ScrollSnapPadding {
+  DISALLOW_NEW();
+
+  ScrollSnapPadding()
+      : top(kFixed), right(kFixed), bottom(kFixed), left(kFixed) {}
+
+  bool operator==(const ScrollSnapPadding& other) const {
+    return top == other.top && right == other.right && bottom == other.bottom &&
+           left == other.left;
+  }
+
+  bool operator!=(const ScrollSnapPadding& other) const {
+    return !(*this == other);
+  }
+
+  Length top;
+  Length right;
+  Length bottom;
+  Length left;
+};
+
+struct ScrollSnapMargin {
+  DISALLOW_NEW();
+
+  ScrollSnapMargin()
+      : top(kFixed), right(kFixed), bottom(kFixed), left(kFixed) {}
+
+  bool operator==(const ScrollSnapMargin& other) const {
+    return top == other.top && right == other.right && bottom == other.bottom &&
+           left == other.left;
+  }
+
+  bool operator!=(const ScrollSnapMargin& other) const {
+    return !(*this == other);
+  }
+
+  Length top;
+  Length right;
+  Length bottom;
+  Length left;
+};
+
 }  // namespace blink
 
 #endif  // ScrollSnapPoints_h