chromium/third_party/blink/renderer/core/frame/resize_viewport_anchor.h

// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_FRAME_RESIZE_VIEWPORT_ANCHOR_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_FRAME_RESIZE_VIEWPORT_ANCHOR_H_

#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/page/page.h"
#include "third_party/blink/renderer/core/scroll/scroll_types.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"

namespace blink {

class LocalFrameView;

// This class scrolls the viewports to compensate for bounds clamping caused by
// viewport size changes.
//
// It is needed when the layout viewport grows (causing its own scroll position
// to be clamped) and also when it shrinks (causing the visual viewport's scroll
// position to be clamped).
class CORE_EXPORT ResizeViewportAnchor final
    : public GarbageCollected<ResizeViewportAnchor> { … };

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_CORE_FRAME_RESIZE_VIEWPORT_ANCHOR_H_