layout/generic/nsRubyTextContainerFrame.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 /* rendering object for CSS "display: ruby-text-container" */
   8
   9 #ifndef nsRubyTextContainerFrame_h___
  10 #define nsRubyTextContainerFrame_h___
  11
  12 #include "nsBlockFrame.h"
  13
  14 namespace mozilla {
  15 class PresShell;
  16 }  // namespace mozilla
  17
  18 /**
  19  * Factory function.
  20  * @return a newly allocated nsRubyTextContainerFrame (infallible)
  21  */
  22 nsContainerFrame* NS_NewRubyTextContainerFrame(mozilla::PresShell* aPresShell,
  23                                                mozilla::ComputedStyle* aStyle);
  24
  25 class nsRubyTextContainerFrame final : public nsContainerFrame {
  26  public:
  27   NS_DECL_FRAMEARENA_HELPERS(nsRubyTextContainerFrame)
  28   NS_DECL_QUERYFRAME
  29
  30   // nsIFrame overrides
  31   virtual bool IsFrameOfType(uint32_t aFlags) const override;
  32   virtual void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,
  33                       const ReflowInput& aReflowInput,
  34                       nsReflowStatus& aStatus) override;
  35
  36 #ifdef DEBUG_FRAME_DUMP
  37   virtual nsresult GetFrameName(nsAString& aResult) const override;
  38 #endif
  39
  40   // nsContainerFrame overrides
  41   virtual void SetInitialChildList(ChildListID aListID,
  42                                    nsFrameList& aChildList) override;
  43   virtual void AppendFrames(ChildListID aListID,
  44                             nsFrameList& aFrameList) override;
  45   virtual void InsertFrames(ChildListID aListID, nsIFrame* aPrevFrame,
  46                             const nsLineList::iterator* aPrevFrameLine,
  47                             nsFrameList& aFrameList) override;
  48   virtual void RemoveFrame(ChildListID aListID, nsIFrame* aOldFrame) override;
  49
  50   bool IsSpanContainer() const {
  51     return HasAnyStateBits(NS_RUBY_TEXT_CONTAINER_IS_SPAN);
  52   }
  53
  54  protected:
  55   friend nsContainerFrame* NS_NewRubyTextContainerFrame(
  56       mozilla::PresShell* aPresShell, ComputedStyle* aStyle);
  57
  58   explicit nsRubyTextContainerFrame(ComputedStyle* aStyle,
  59                                     nsPresContext* aPresContext)
  60       : nsContainerFrame(aStyle, aPresContext, kClassID), mISize(0) {}
  61
  62   void UpdateSpanFlag();
  63
  64   friend class nsRubyBaseContainerFrame;
  65   void SetISize(nscoord aISize) { mISize = aISize; }
  66
  67   // The intended inline size of the ruby text container. It is set by
  68   // the corresponding ruby base container when the segment is reflowed,
  69   // and used when the ruby text container is reflowed by its parent.
  70   nscoord mISize;
  71 };
  72
  73 #endif /* nsRubyTextContainerFrame_h___ */