mirror of
https://github.com/classilla/tenfourfox.git
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176 lines
6.0 KiB
C++
176 lines
6.0 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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 nsSimplePageSequenceFrame_h___
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#define nsSimplePageSequenceFrame_h___
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#include "mozilla/Attributes.h"
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#include "nsIPageSequenceFrame.h"
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#include "nsContainerFrame.h"
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#include "nsIPrintSettings.h"
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#include "nsIPrintOptions.h"
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class nsIDateTimeFormat;
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namespace mozilla {
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namespace dom {
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class HTMLCanvasElement;
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} // namespace dom
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} // namespace mozilla
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//-----------------------------------------------
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// This class maintains all the data that
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// is used by all the page frame
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// It lives while the nsSimplePageSequenceFrame lives
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class nsSharedPageData {
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public:
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// This object a shared by all the nsPageFrames
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// parented to a SimplePageSequenceFrame
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nsSharedPageData() : mShrinkToFitRatio(1.0f) {}
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nsString mDateTimeStr;
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nsString mPageNumFormat;
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nsString mPageNumAndTotalsFormat;
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nsString mDocTitle;
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nsString mDocURL;
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nsFont mHeadFootFont;
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nsSize mReflowSize;
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nsMargin mReflowMargin;
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// Margin for headers and footers; it defaults to 4/100 of an inch on UNIX
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// and 0 elsewhere; I think it has to do with some inconsistency in page size
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// computations
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nsMargin mEdgePaperMargin;
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nsCOMPtr<nsIPrintSettings> mPrintSettings;
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nsCOMPtr<nsIPrintOptions> mPrintOptions;
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// The scaling ratio we need to apply to make all pages fit horizontally. It's
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// the minimum "ComputedWidth / OverflowWidth" ratio of all page content frames
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// that overflowed. It's 1.0 if none overflowed horizontally.
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float mShrinkToFitRatio;
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};
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// Simple page sequence frame class. Used when we're in paginated mode
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class nsSimplePageSequenceFrame : public nsContainerFrame,
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public nsIPageSequenceFrame {
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public:
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friend nsSimplePageSequenceFrame* NS_NewSimplePageSequenceFrame(nsIPresShell* aPresShell,
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nsStyleContext* aContext);
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NS_DECL_QUERYFRAME
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NS_DECL_FRAMEARENA_HELPERS
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// nsIFrame
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virtual void Reflow(nsPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aMaxSize,
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nsReflowStatus& aStatus) override;
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virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists) override;
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// nsIPageSequenceFrame
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NS_IMETHOD SetPageNo(int32_t aPageNo) { return NS_OK;}
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NS_IMETHOD SetSelectionHeight(nscoord aYOffset, nscoord aHeight) override { mYSelOffset = aYOffset; mSelectionHeight = aHeight; return NS_OK; }
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NS_IMETHOD SetTotalNumPages(int32_t aTotal) override { mTotalPages = aTotal; return NS_OK; }
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// For Shrink To Fit
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NS_IMETHOD GetSTFPercent(float& aSTFPercent) override;
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// Async Printing
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NS_IMETHOD StartPrint(nsPresContext* aPresContext,
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nsIPrintSettings* aPrintSettings,
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const nsAString& aDocTitle,
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const nsAString& aDocURL) override;
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NS_IMETHOD PrePrintNextPage(nsITimerCallback* aCallback, bool* aDone) override;
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NS_IMETHOD PrintNextPage() override;
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NS_IMETHOD ResetPrintCanvasList() override;
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NS_IMETHOD GetCurrentPageNum(int32_t* aPageNum) override;
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NS_IMETHOD GetNumPages(int32_t* aNumPages) override;
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NS_IMETHOD IsDoingPrintRange(bool* aDoing) override;
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NS_IMETHOD GetPrintRange(int32_t* aFromPage, int32_t* aToPage) override;
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NS_IMETHOD DoPageEnd() override;
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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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virtual bool HasTransformGetter() const override { return true; }
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/**
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* Get the "type" of the frame
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*
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* @see nsGkAtoms::sequenceFrame
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*/
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virtual nsIAtom* GetType() const 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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explicit nsSimplePageSequenceFrame(nsStyleContext* aContext);
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virtual ~nsSimplePageSequenceFrame();
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void SetPageNumberFormat(const char* aPropName, const char* aDefPropVal, bool aPageNumOnly);
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// SharedPageData Helper methods
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void SetDateTimeStr(const nsAString& aDateTimeStr);
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void SetPageNumberFormat(const nsAString& aFormatStr, bool aForPageNumOnly);
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// Sets the frame desired size to the size of the viewport, or the given
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// nscoords, whichever is larger. Print scaling is applied in this function.
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void SetDesiredSize(nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nscoord aWidth, nscoord aHeight);
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// Helper function to compute the offset needed to center a child
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// page-frame's margin-box inside our content-box.
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nscoord ComputeCenteringMargin(nscoord aContainerContentBoxWidth,
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nscoord aChildPaddingBoxWidth,
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const nsMargin& aChildPhysicalMargin);
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void DetermineWhetherToPrintPage();
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nsIFrame* GetCurrentPageFrame();
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nsMargin mMargin;
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// I18N date formatter service which we'll want to cache locally.
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nsCOMPtr<nsIDateTimeFormat> mDateFormatter;
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nsSize mSize;
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nsSharedPageData* mPageData; // data shared by all the nsPageFrames
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// Asynch Printing
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int32_t mPageNum;
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int32_t mTotalPages;
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int32_t mPrintRangeType;
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int32_t mFromPageNum;
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int32_t mToPageNum;
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nsTArray<int32_t> mPageRanges;
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nsTArray<RefPtr<mozilla::dom::HTMLCanvasElement> > mCurrentCanvasList;
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// Selection Printing Info
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nscoord mSelectionHeight;
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nscoord mYSelOffset;
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// Asynch Printing
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bool mPrintThisPage;
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bool mDoingPageRange;
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bool mIsPrintingSelection;
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bool mCalledBeginPage;
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bool mCurrentCanvasListSetup;
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};
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#endif /* nsSimplePageSequenceFrame_h___ */
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