1 files changed, 105 insertions, 0 deletions
diff --git a/Source/WebCore/rendering/style/StyleScrollSnapPoints.h b/Source/WebCore/rendering/style/StyleScrollSnapPoints.h
new file mode 100644
index 000000000..c5f0aeb78
--- /dev/null
+++ b/Source/WebCore/rendering/style/StyleScrollSnapPoints.h
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+/*
+ * Copyright (C) 2014-2016 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+#if ENABLE(CSS_SCROLL_SNAP)
+
+#include "LengthBox.h"
+#include "LengthSize.h"
+#include "RenderStyleConstants.h"
+#include <wtf/RefCounted.h>
+#include <wtf/Vector.h>
+
+namespace WebCore {
+
+struct ScrollSnapType {
+    ScrollSnapAxis axis { ScrollSnapAxis::Both };
+    ScrollSnapStrictness strictness { ScrollSnapStrictness::None };
+};
+
+inline bool operator==(const ScrollSnapType& a, const ScrollSnapType& b)
+{
+    return a.axis == b.axis && a.strictness == b.strictness;
+}
+
+inline bool operator!=(const ScrollSnapType& a, const ScrollSnapType& b) { return !(a == b); }
+
+class StyleScrollSnapPort : public RefCounted<StyleScrollSnapPort> {
+public:
+    static Ref<StyleScrollSnapPort> create() { return adoptRef(*new StyleScrollSnapPort); }
+    Ref<StyleScrollSnapPort> copy() const;
+
+    ScrollSnapType type;
+    LengthBox scrollPadding { 0, 0, 0, 0 };
+
+private:
+    StyleScrollSnapPort();
+    StyleScrollSnapPort(const StyleScrollSnapPort&);
+};
+
+inline bool operator==(const StyleScrollSnapPort& a, const StyleScrollSnapPort& b)
+{
+    return a.type == b.type && a.scrollPadding == b.scrollPadding;
+}
+
+inline bool operator!=(const StyleScrollSnapPort& a, const StyleScrollSnapPort& b) { return !(a == b); }
+
+struct ScrollSnapAlign {
+    ScrollSnapAxisAlignType x { ScrollSnapAxisAlignType::None };
+    ScrollSnapAxisAlignType y { ScrollSnapAxisAlignType::None };
+};
+
+inline bool operator==(const ScrollSnapAlign& a, const ScrollSnapAlign& b)
+{
+    return a.x == b.x && a.y == b.y;
+}
+
+inline bool operator!=(const ScrollSnapAlign& a, const ScrollSnapAlign& b) { return !(a == b); }
+
+class StyleScrollSnapArea : public RefCounted<StyleScrollSnapArea> {
+public:
+    static Ref<StyleScrollSnapArea> create() { return adoptRef(*new StyleScrollSnapArea); }
+    Ref<StyleScrollSnapArea> copy() const;
+    bool hasSnapPosition() const { return alignment.x != ScrollSnapAxisAlignType::None || alignment.y != ScrollSnapAxisAlignType::None; }
+
+    ScrollSnapAlign alignment;
+    LengthBox scrollSnapMargin { 0, 0, 0, 0 };
+
+private:
+    StyleScrollSnapArea();
+    StyleScrollSnapArea(const StyleScrollSnapArea&);
+};
+
+inline bool operator==(const StyleScrollSnapArea& a, const StyleScrollSnapArea& b)
+{
+    return a.alignment == b.alignment && a.scrollSnapMargin == b.scrollSnapMargin;
+}
+
+inline bool operator!=(const StyleScrollSnapArea& a, const StyleScrollSnapArea& b) { return !(a == b); }
+
+} // namespace WebCore
+
+#endif // ENABLE(CSS_SCROLL_SNAP)