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60 lines
1.5 KiB
C++
60 lines
1.5 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 GFX_HITTESTINFO_H
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#define GFX_HITTESTINFO_H
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#include "mozilla/gfx/CompositorHitTestInfo.h"
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#include "mozilla/layers/ScrollableLayerGuid.h"
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#include "nsRect.h"
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class nsIFrame;
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namespace mozilla {
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class nsDisplayListBuilder;
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struct ActiveScrolledRoot;
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namespace wr {
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class DisplayListBuilder;
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} // namespace wr
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/**
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* A helper class that manages compositor hit testing information.
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*/
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class HitTestInfo {
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public:
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using CompositorHitTestInfo = gfx::CompositorHitTestInfo;
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using ViewID = layers::ScrollableLayerGuid::ViewID;
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ViewID GetViewId(wr::DisplayListBuilder& aBuilder,
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const ActiveScrolledRoot* aASR) const;
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void Initialize(nsDisplayListBuilder* aBuilder, nsIFrame* aFrame);
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void InitializeScrollTarget(nsDisplayListBuilder* aBuilder);
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void SetAreaAndInfo(const nsRect& aArea, const CompositorHitTestInfo& aInfo) {
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mArea = aArea;
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mInfo = aInfo;
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}
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static void Shutdown();
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const nsRect& Area() const { return mArea; }
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const CompositorHitTestInfo& Info() const { return mInfo; }
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static const HitTestInfo& Empty();
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private:
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nsRect mArea;
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CompositorHitTestInfo mInfo;
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mozilla::Maybe<ViewID> mScrollTarget;
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};
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} // namespace mozilla
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#endif
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