зеркало из https://github.com/mozilla/gecko-dev.git
49 строки
1.3 KiB
C++
49 строки
1.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_VisualViewport_h
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#define mozilla_dom_VisualViewport_h
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#include "mozilla/DOMEventTargetHelper.h"
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#include "mozilla/dom/VisualViewportBinding.h"
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#include "Units.h"
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#include "nsIPresShell.h"
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namespace mozilla {
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namespace dom {
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/* Visual Viewport API spec: https://wicg.github.io/visual-viewport/#the-visualviewport-interface */
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class VisualViewport final: public mozilla::DOMEventTargetHelper
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{
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public:
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explicit VisualViewport(nsPIDOMWindowInner* aWindow);
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double OffsetLeft() const;
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double OffsetTop() const;
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double PageLeft() const;
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double PageTop() const;
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double Width() const;
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double Height() const;
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double Scale() const;
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virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
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private:
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virtual ~VisualViewport();
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CSSSize VisualViewportSize() const;
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CSSPoint VisualViewportOffset() const;
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CSSPoint LayoutViewportOffset() const;
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nsIPresShell* GetPresShell() const;
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_VisualViewport_h
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