forked from mirrors/gecko-dev
277889966a
The overrides were added in bug 1803861. With Part 1 , they are no longer needed. Actually, without this patch, the assertion "First descendent of nsPageSequenceFrame should not have a previous continuation" in `nsPageFrame::FirstContinuation` will be triggered when constructing frame tree, because `nsSplittableFrame::SetPrevContinuation` now accesses `FirstContinuation()`, but the parent-child relationship might not properly set up yet. Differential Revision: https://phabricator.services.mozilla.com/D197758
72 lines
2.4 KiB
C++
72 lines
2.4 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 nsPageContentFrame_h___
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#define nsPageContentFrame_h___
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#include "mozilla/Attributes.h"
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#include "mozilla/ViewportFrame.h"
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class nsPageFrame;
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class nsSharedPageData;
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namespace mozilla {
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class PresShell;
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} // namespace mozilla
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// Page content frame class. Represents a page's content, in paginated mode.
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class nsPageContentFrame final : public mozilla::ViewportFrame {
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public:
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NS_DECL_FRAMEARENA_HELPERS(nsPageContentFrame)
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friend nsPageContentFrame* NS_NewPageContentFrame(
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mozilla::PresShell* aPresShell, ComputedStyle* aStyle,
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already_AddRefed<const nsAtom> aPageName);
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friend class nsPageFrame;
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// nsIFrame
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void Reflow(nsPresContext* aPresContext, ReflowOutput& aReflowOutput,
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const ReflowInput& aReflowInput,
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nsReflowStatus& aStatus) override;
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const nsAtom* GetPageName() const { return mPageName; }
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void SetSharedPageData(nsSharedPageData* aPD) { mPD = aPD; }
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ComputeTransformFunction GetTransformGetter() const override;
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void BuildDisplayList(nsDisplayListBuilder*,
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const nsDisplayListSet&) override;
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/**
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* Return our canvas frame.
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*/
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void AppendDirectlyOwnedAnonBoxes(nsTArray<OwnedAnonBox>& aResult) override;
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void EnsurePageName();
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#ifdef DEBUG_FRAME_DUMP
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// Debugging
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nsresult GetFrameName(nsAString& aResult) const override;
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void ExtraContainerFrameInfo(nsACString& aTo) const override;
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#endif
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protected:
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explicit nsPageContentFrame(ComputedStyle* aStyle,
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nsPresContext* aPresContext,
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already_AddRefed<const nsAtom> aPageName)
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: ViewportFrame(aStyle, aPresContext, kClassID), mPageName(aPageName) {}
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RefPtr<const nsAtom> mPageName;
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// Note: this will be set before reflow, and it's strongly owned by our
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// nsPageSequenceFrame, which outlives us.
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nsSharedPageData* mPD = nullptr;
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// The combined InkOverflow from the previous and current page that does not
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// yet have space allocated for it.
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nscoord mRemainingOverflow = 0;
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};
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#endif /* nsPageContentFrame_h___ */
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