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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 GFX_HITTESTINFO_H
#define GFX_HITTESTINFO_H
#include "mozilla/gfx/CompositorHitTestInfo.h"
#include "mozilla/layers/ScrollableLayerGuid.h"
#include "nsRect.h"
class nsIFrame;
namespace mozilla {
class nsDisplayListBuilder;
struct ActiveScrolledRoot;
namespace wr {
class DisplayListBuilder;
} // namespace wr
/**
* A helper class that manages compositor hit testing information.
*/
class HitTestInfo {
public:
using CompositorHitTestInfo = gfx::CompositorHitTestInfo;
using ViewID = layers::ScrollableLayerGuid::ViewID;
ViewID GetViewId(wr::DisplayListBuilder& aBuilder,
const ActiveScrolledRoot* aASR) const;
void Initialize(nsDisplayListBuilder* aBuilder, nsIFrame* aFrame);
void InitializeScrollTarget(nsDisplayListBuilder* aBuilder);
void SetAreaAndInfo(const nsRect& aArea, const CompositorHitTestInfo& aInfo) {
mArea = aArea;
mInfo = aInfo;
}
static void Shutdown();
const nsRect& Area() const { return mArea; }
const CompositorHitTestInfo& Info() const { return mInfo; }
static const HitTestInfo& Empty();
private:
nsRect mArea;
CompositorHitTestInfo mInfo;
mozilla::Maybe<ViewID> mScrollTarget;
};
} // namespace mozilla
#endif
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