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143 lines
4.7 KiB
C++
143 lines
4.7 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 nsPageFrame_h___
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#define nsPageFrame_h___
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#include "mozilla/Attributes.h"
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#include "nsContainerFrame.h"
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#include "nsLeafFrame.h"
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class nsFontMetrics;
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class nsPageContentFrame;
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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 frame class. Represents an individual page, in paginated mode.
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class nsPageFrame final : public nsContainerFrame {
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public:
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NS_DECL_QUERYFRAME
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NS_DECL_FRAMEARENA_HELPERS(nsPageFrame)
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friend nsPageFrame* NS_NewPageFrame(mozilla::PresShell* aPresShell,
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ComputedStyle* aStyle);
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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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void BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsDisplayListSet& aLists) override;
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#ifdef DEBUG_FRAME_DUMP
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nsresult GetFrameName(nsAString& aResult) const override;
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#endif
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//////////////////
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// For Printing
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//////////////////
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// Determine this page's page-number, based on its previous continuation
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// (whose page number is presumed to already be known).
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void DeterminePageNum();
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int32_t GetPageNum() const { return mPageNum; }
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void SetSharedPageData(nsSharedPageData* aPD);
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nsSharedPageData* GetSharedPageData() const { return mPD; }
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// We must allow Print Preview UI to have a background, no matter what the
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// user's settings
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bool HonorPrintBackgroundSettings() const override { return false; }
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void PaintHeaderFooter(gfxContext& aRenderingContext, nsPoint aPt,
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bool aSubpixelAA);
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const nsMargin& GetUsedPageContentMargin() const {
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return mPageContentMargin;
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}
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uint32_t IndexOnSheet() const { return mIndexOnSheet; }
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void SetIndexOnSheet(uint32_t aIndexOnSheet) {
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mIndexOnSheet = aIndexOnSheet;
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}
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ComputeTransformFunction GetTransformGetter() const override;
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nsPageContentFrame* PageContentFrame() const;
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nsSize ComputePageSize() const;
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protected:
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explicit nsPageFrame(ComputedStyle* aStyle, nsPresContext* aPresContext);
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virtual ~nsPageFrame();
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typedef enum { eHeader, eFooter } nsHeaderFooterEnum;
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nscoord GetXPosition(gfxContext& aRenderingContext,
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nsFontMetrics& aFontMetrics, const nsRect& aRect,
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int32_t aJust, const nsString& aStr);
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nsReflowStatus ReflowPageContent(nsPresContext*,
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const ReflowInput& aPageReflowInput);
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void DrawHeaderFooter(gfxContext& aRenderingContext,
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nsFontMetrics& aFontMetrics,
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nsHeaderFooterEnum aHeaderFooter, int32_t aJust,
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const nsString& sStr, const nsRect& aRect,
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nscoord aHeight, nscoord aAscent, nscoord aWidth);
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void DrawHeaderFooter(gfxContext& aRenderingContext,
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nsFontMetrics& aFontMetrics,
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nsHeaderFooterEnum aHeaderFooter,
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const nsString& aStrLeft, const nsString& aStrRight,
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const nsString& aStrCenter, const nsRect& aRect,
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nscoord aAscent, nscoord aHeight);
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void ProcessSpecialCodes(const nsString& aStr, nsString& aNewStr);
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static constexpr int32_t kPageNumUnset = -1;
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// 1-based page-num
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int32_t mPageNum = kPageNumUnset;
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// 0-based index on the sheet that we belong to. Unused/meaningless if this
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// page has frame state bit NS_PAGE_SKIPPED_BY_CUSTOM_RANGE.
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uint32_t mIndexOnSheet = 0;
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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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nsMargin mPageContentMargin;
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};
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class nsPageBreakFrame final : public nsLeafFrame {
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NS_DECL_FRAMEARENA_HELPERS(nsPageBreakFrame)
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explicit nsPageBreakFrame(ComputedStyle* aStyle, nsPresContext* aPresContext);
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~nsPageBreakFrame();
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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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#ifdef DEBUG_FRAME_DUMP
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nsresult GetFrameName(nsAString& aResult) const override;
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#endif
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protected:
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nscoord GetIntrinsicISize() override;
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nscoord GetIntrinsicBSize() override;
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bool mHaveReflowed;
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friend nsIFrame* NS_NewPageBreakFrame(mozilla::PresShell* aPresShell,
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ComputedStyle* aStyle);
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};
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#endif /* nsPageFrame_h___ */
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