зеркало из https://github.com/mozilla/gecko-dev.git
133 строки
4.3 KiB
C++
133 строки
4.3 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 nsSharedPageData;
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// Page frame class used by the simple page sequence frame
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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(nsIPresShell* aPresShell,
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nsStyleContext* aContext);
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virtual void Reflow(nsPresContext* aPresContext,
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ReflowOutput& aDesiredSize,
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const ReflowInput& aReflowInput,
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nsReflowStatus& aStatus) override;
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virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsDisplayListSet& aLists) override;
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#ifdef DEBUG_FRAME_DUMP
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virtual 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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// Tell the page which page number it is out of how many
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virtual void SetPageNumInfo(int32_t aPageNumber, int32_t aTotalPages);
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virtual void SetSharedPageData(nsSharedPageData* aPD);
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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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virtual bool HonorPrintBackgroundSettings() override { return false; }
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void PaintHeaderFooter(gfxContext& aRenderingContext,
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nsPoint aPt, bool aSubpixelAA);
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/**
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* Return our page content frame.
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*/
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void AppendDirectlyOwnedAnonBoxes(nsTArray<OwnedAnonBox>& aResult) override;
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protected:
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explicit nsPageFrame(nsStyleContext* aContext);
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virtual ~nsPageFrame();
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typedef enum {
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eHeader,
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eFooter
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} nsHeaderFooterEnum;
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nscoord GetXPosition(gfxContext& aRenderingContext,
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nsFontMetrics& aFontMetrics,
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const nsRect& aRect,
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int32_t aJust,
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const nsString& aStr);
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void DrawHeaderFooter(gfxContext& aRenderingContext,
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nsFontMetrics& aFontMetrics,
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nsHeaderFooterEnum aHeaderFooter,
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int32_t aJust,
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const nsString& sStr,
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const nsRect& aRect,
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nscoord aHeight,
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nscoord aAscent,
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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,
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const nsString& aStrRight,
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const nsString& aStrCenter,
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const nsRect& aRect,
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nscoord aAscent,
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nscoord aHeight);
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void ProcessSpecialCodes(const nsString& aStr, nsString& aNewStr);
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int32_t mPageNum;
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int32_t mTotNumPages;
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nsSharedPageData* mPD;
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nsMargin mPageContentMargin;
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};
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class nsPageBreakFrame final : public nsLeafFrame
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{
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NS_DECL_FRAMEARENA_HELPERS(nsPageBreakFrame)
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explicit nsPageBreakFrame(nsStyleContext* aContext);
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~nsPageBreakFrame();
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virtual void Reflow(nsPresContext* aPresContext,
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ReflowOutput& aDesiredSize,
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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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virtual nsresult GetFrameName(nsAString& aResult) const override;
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#endif
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protected:
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virtual nscoord GetIntrinsicISize() override;
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virtual nscoord GetIntrinsicBSize() override;
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bool mHaveReflowed;
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friend nsIFrame* NS_NewPageBreakFrame(nsIPresShell* aPresShell,
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nsStyleContext* aContext);
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};
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#endif /* nsPageFrame_h___ */
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