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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_layers_DoubleTapToZoom_h
#define mozilla_layers_DoubleTapToZoom_h
#include "Units.h"
class nsIDocument;
template<class T> class nsCOMPtr;
namespace mozilla {
namespace layers {
/**
* For a double tap at |aPoint|, return the rect to which the browser
* should zoom in response, or an empty rect if the browser should zoom out.
* |aDocument| should be the root content document for the content that was
* tapped.
*/
CSSRect CalculateRectToZoomTo(const nsCOMPtr<nsIDocument>& aRootContentDocument,
const CSSPoint& aPoint);
}
}
#endif /* mozilla_layers_DoubleTapToZoom_h */
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