diff -r 000000000000 -r 6474c204b198 layout/generic/nsSimplePageSequenceFrame.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/layout/generic/nsSimplePageSequenceFrame.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,167 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 http://mozilla.org/MPL/2.0/. */
+#ifndef nsSimplePageSequenceFrame_h___
+#define nsSimplePageSequenceFrame_h___
+
+#include "mozilla/Attributes.h"
+#include "nsIPageSequenceFrame.h"
+#include "nsContainerFrame.h"
+#include "nsIPrintSettings.h"
+#include "nsIPrintOptions.h"
+
+class nsIDateTimeFormat;
+
+namespace mozilla {
+namespace dom {
+
+class HTMLCanvasElement;
+
+}
+}
+
+//-----------------------------------------------
+// This class maintains all the data that 
+// is used by all the page frame
+// It lives while the nsSimplePageSequenceFrame lives
+class nsSharedPageData {
+public:
+  // This object a shared by all the nsPageFrames
+  // parented to a SimplePageSequenceFrame
+  nsSharedPageData() : mShrinkToFitRatio(1.0f) {}
+
+  nsString    mDateTimeStr;
+  nsString    mPageNumFormat;
+  nsString    mPageNumAndTotalsFormat;
+  nsString    mDocTitle;
+  nsString    mDocURL;
+  nsFont      mHeadFootFont;
+
+  nsSize      mReflowSize;
+  nsMargin    mReflowMargin;
+  // Margin for headers and footers; it defaults to 4/100 of an inch on UNIX 
+  // and 0 elsewhere; I think it has to do with some inconsistency in page size
+  // computations
+  nsMargin    mEdgePaperMargin;
+
+  nsCOMPtr<nsIPrintSettings> mPrintSettings;
+  nsCOMPtr<nsIPrintOptions> mPrintOptions;
+
+  // The scaling ratio we need to apply to make all pages fit horizontally.  It's
+  // the minimum "ComputedWidth / OverflowWidth" ratio of all page content frames
+  // that overflowed.  It's 1.0 if none overflowed horizontally.
+  float mShrinkToFitRatio;
+};
+
+// Simple page sequence frame class. Used when we're in paginated mode
+class nsSimplePageSequenceFrame : public nsContainerFrame,
+                                  public nsIPageSequenceFrame {
+public:
+  friend nsIFrame* NS_NewSimplePageSequenceFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
+
+  NS_DECL_QUERYFRAME
+  NS_DECL_FRAMEARENA_HELPERS
+
+  // nsIFrame
+  virtual nsresult  Reflow(nsPresContext*      aPresContext,
+                           nsHTMLReflowMetrics& aDesiredSize,
+                           const nsHTMLReflowState& aMaxSize,
+                           nsReflowStatus&      aStatus) MOZ_OVERRIDE;
+
+  virtual void BuildDisplayList(nsDisplayListBuilder*   aBuilder,
+                                const nsRect&           aDirtyRect,
+                                const nsDisplayListSet& aLists) MOZ_OVERRIDE;
+
+  // nsIPageSequenceFrame
+  NS_IMETHOD SetPageNo(int32_t aPageNo) { return NS_OK;}
+  NS_IMETHOD SetSelectionHeight(nscoord aYOffset, nscoord aHeight) MOZ_OVERRIDE { mYSelOffset = aYOffset; mSelectionHeight = aHeight; return NS_OK; }
+  NS_IMETHOD SetTotalNumPages(int32_t aTotal) MOZ_OVERRIDE { mTotalPages = aTotal; return NS_OK; }
+  
+  // For Shrink To Fit
+  NS_IMETHOD GetSTFPercent(float& aSTFPercent) MOZ_OVERRIDE;
+
+  // Async Printing
+  NS_IMETHOD StartPrint(nsPresContext*    aPresContext,
+                        nsIPrintSettings* aPrintSettings,
+                        const nsAString&  aDocTitle,
+                        const nsAString&  aDocURL) MOZ_OVERRIDE;
+  NS_IMETHOD PrePrintNextPage(nsITimerCallback* aCallback, bool* aDone) MOZ_OVERRIDE;
+  NS_IMETHOD PrintNextPage() MOZ_OVERRIDE;
+  NS_IMETHOD ResetPrintCanvasList() MOZ_OVERRIDE;
+  NS_IMETHOD GetCurrentPageNum(int32_t* aPageNum) MOZ_OVERRIDE;
+  NS_IMETHOD GetNumPages(int32_t* aNumPages) MOZ_OVERRIDE;
+  NS_IMETHOD IsDoingPrintRange(bool* aDoing) MOZ_OVERRIDE;
+  NS_IMETHOD GetPrintRange(int32_t* aFromPage, int32_t* aToPage) MOZ_OVERRIDE;
+  NS_IMETHOD DoPageEnd() MOZ_OVERRIDE;
+
+  // We must allow Print Preview UI to have a background, no matter what the
+  // user's settings
+  virtual bool HonorPrintBackgroundSettings() MOZ_OVERRIDE { return false; }
+
+  virtual bool HasTransformGetter() const MOZ_OVERRIDE { return true; }
+
+  /**
+   * Get the "type" of the frame
+   *
+   * @see nsGkAtoms::sequenceFrame
+   */
+  virtual nsIAtom* GetType() const MOZ_OVERRIDE;
+
+#ifdef DEBUG_FRAME_DUMP
+  virtual nsresult  GetFrameName(nsAString& aResult) const MOZ_OVERRIDE;
+#endif
+
+protected:
+  nsSimplePageSequenceFrame(nsStyleContext* aContext);
+  virtual ~nsSimplePageSequenceFrame();
+
+  void SetPageNumberFormat(const char* aPropName, const char* aDefPropVal, bool aPageNumOnly);
+
+  // SharedPageData Helper methods
+  void SetDateTimeStr(const nsAString& aDateTimeStr);
+  void SetPageNumberFormat(const nsAString& aFormatStr, bool aForPageNumOnly);
+
+  // Sets the frame desired size to the size of the viewport, or the given
+  // nscoords, whichever is larger. Print scaling is applied in this function.
+  void SetDesiredSize(nsHTMLReflowMetrics& aDesiredSize,
+                      const nsHTMLReflowState& aReflowState,
+                      nscoord aWidth, nscoord aHeight);
+
+  void DetermineWhetherToPrintPage();
+  nsIFrame* GetCurrentPageFrame();
+
+  nsMargin mMargin;
+
+  // I18N date formatter service which we'll want to cache locally.
+  nsCOMPtr<nsIDateTimeFormat> mDateFormatter;
+
+  nsSize       mSize;
+  nsSharedPageData* mPageData; // data shared by all the nsPageFrames
+
+  // Asynch Printing
+  int32_t      mPageNum;
+  int32_t      mTotalPages;
+  int32_t      mPrintRangeType;
+  int32_t      mFromPageNum;
+  int32_t      mToPageNum;
+  nsTArray<int32_t> mPageRanges;
+  nsTArray<nsRefPtr<mozilla::dom::HTMLCanvasElement> > mCurrentCanvasList;
+
+  // Selection Printing Info
+  nscoord      mSelectionHeight;
+  nscoord      mYSelOffset;
+
+  // Asynch Printing
+  bool mPrintThisPage;
+  bool mDoingPageRange;
+
+  bool mIsPrintingSelection;
+
+  bool mCalledBeginPage;
+
+  bool mCurrentCanvasListSetup;
+};
+
+#endif /* nsSimplePageSequenceFrame_h___ */
+