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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 https://mozilla.org/MPL/2.0/. */
/* Rendering object for a printed or print-previewed sheet of paper */
#ifndef LAYOUT_GENERIC_PRINTEDSHEETFRAME_H_
#define LAYOUT_GENERIC_PRINTEDSHEETFRAME_H_
#include "nsContainerFrame.h"
#include "nsHTMLParts.h"
class nsSharedPageData;
namespace mozilla {
class PrintedSheetFrame final : public nsContainerFrame {
public:
NS_DECL_QUERYFRAME
NS_DECL_FRAMEARENA_HELPERS(PrintedSheetFrame)
friend PrintedSheetFrame* ::NS_NewPrintedSheetFrame(
mozilla::PresShell* aPresShell, ComputedStyle* aStyle);
void SetSharedPageData(nsSharedPageData* aPD) { mPD = aPD; }
// nsIFrame overrides
void Reflow(nsPresContext* aPresContext, ReflowOutput& aReflowOutput,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus) override;
void BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsDisplayListSet& aLists) override;
// Return our first page frame.
void AppendDirectlyOwnedAnonBoxes(nsTArray<OwnedAnonBox>& aResult) override;
#ifdef DEBUG_FRAME_DUMP
nsresult GetFrameName(nsAString& aResult) const override;
#endif
uint32_t GetNumPages() const { return mNumPages; }
private:
// Private construtor & destructor, to avoid accidental (non-FrameArena)
// instantiation/deletion:
PrintedSheetFrame(ComputedStyle* aStyle, nsPresContext* aPresContext)
: nsContainerFrame(aStyle, aPresContext, kClassID) {}
~PrintedSheetFrame() = default;
// Helper function to populate some pages-per-sheet metrics in our
// nsSharedPageData.
void ComputePagesPerSheetOriginAndScale();
// Note: this will be set before reflow, and it's strongly owned by our
// nsPageSequenceFrame, which outlives us.
nsSharedPageData* mPD = nullptr;
// The number of visible pages in this sheet.
uint32_t mNumPages = 0;
};
} // namespace mozilla
#endif /* LAYOUT_GENERIC_PRINTEDSHEETFRAME_H_ */
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