First Implementation of Snapped Points

third_party/WebKit/public/platform/WebSnapPointList.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 WebSnapPointList_h
+#define WebSnapPointList_h
+
+#include <vector>
+#include "WebCommon.h"
+
+namespace blink {
+enum SnapOrientation { kSnapX, kSnapY };
+
+struct WebSnapPoint {
+  double offset;
+  bool must_snap;
+  bool is_start;
+  bool is_end;
+  WebSnapPoint(double o, bool m, bool start, bool end)
+      : offset(o), must_snap(m), is_start(start), is_end(end) {}
+  WebSnapPoint(const WebSnapPoint& p)
+      : offset(p.offset),
+        must_snap(p.must_snap),
+        is_start(p.is_start),
+        is_end(p.is_end) {}
+  bool operator<(const WebSnapPoint& b) const { return offset < b.offset; }
+};
+
+struct WebSnapPointList {
+ public:
+  WebSnapPointList(){};
+  BLINK_PLATFORM_EXPORT void AddSnapPoint(double,
+                                          bool,
+                                          bool,
+                                          bool,
+                                          SnapOrientation);
+  BLINK_PLATFORM_EXPORT void Sort();
+
+  const std::vector<WebSnapPoint>& HorizontalOffsets() const {
+    return horizontal_;
+  }
+  const std::vector<WebSnapPoint>& VerticalOffsets() const { return vertical_; }
+
+ private:
+  std::vector<WebSnapPoint> horizontal_;
+  std::vector<WebSnapPoint> vertical_;
+};
+
+}  // namespace blink
+
+#endif  // WebSnapPointList_h