d52af30d75
... if the group had hit test flags set. This is more of a workaround than a proper fix. The general idea is that if we hadn't made the item active, its bound would have included in the group's hit tested bounds. Making the item active reduces the area that is covered by hit test items and we don't want that. *** fixup Differential Revision: https://phabricator.services.mozilla.com/D143755
67 lines
1.9 KiB
C++
67 lines
1.9 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_HITTESTINFOMANAGER_H
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#define GFX_HITTESTINFOMANAGER_H
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#include "mozilla/gfx/CompositorHitTestInfo.h"
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#include "mozilla/layers/ScrollableLayerGuid.h"
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#include "mozilla/webrender/WebRenderAPI.h"
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#include "nsRect.h"
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namespace mozilla {
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class nsDisplayItem;
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class nsDisplayListBuilder;
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namespace wr {
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class DisplayListBuilder;
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}
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namespace layers {
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/**
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* This class extracts the hit testing information (area, flags, ViewId) from
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* Gecko display items and pushes them into WebRender display list.
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*
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* The hit testing information is deduplicated: a new hit test item is only
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* added if the new area is not contained in the previous area, or if the flags,
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* ViewId, or current spatial id is different.
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*/
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class HitTestInfoManager {
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public:
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HitTestInfoManager();
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/**
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* Resets the previous hit testing information.
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*/
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void Reset();
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/**
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* Extracts the hit testing information from |aItem|, and if necessary, adds
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* a new WebRender hit test item using |aBuilder|.
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*
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* Returns true if a hit test item was pushed.
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*/
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bool ProcessItem(nsDisplayItem* aItem, wr::DisplayListBuilder& aBuilder,
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nsDisplayListBuilder* aDisplayListBuilder);
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private:
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bool Update(const nsRect& aArea, const gfx::CompositorHitTestInfo& aFlags,
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const ScrollableLayerGuid::ViewID& aViewId,
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const wr::WrSpaceAndClipChain& aSpaceAndClip);
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nsRect mArea;
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gfx::CompositorHitTestInfo mFlags;
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ScrollableLayerGuid::ViewID mViewId;
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wr::WrSpaceAndClipChain mSpaceAndClipChain;
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};
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} // namespace layers
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} // namespace mozilla
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#endif
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