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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 nsMathMLmrootFrame_h___
#define nsMathMLmrootFrame_h___
#include "mozilla/Attributes.h"
#include "nsMathMLContainerFrame.h"
#include "nsMathMLChar.h"
namespace mozilla {
class PresShell;
} // namespace mozilla
//
// <msqrt> and <mroot> -- form a radical
//
class nsMathMLmrootFrame : public nsMathMLContainerFrame {
public:
NS_DECL_FRAMEARENA_HELPERS(nsMathMLmrootFrame)
friend nsIFrame* NS_NewMathMLmrootFrame(mozilla::PresShell* aPresShell,
ComputedStyle* aStyle);
void DidSetComputedStyle(ComputedStyle* aOldStyle) override;
void Init(nsIContent* aContent, nsContainerFrame* aParent,
nsIFrame* aPrevInFlow) override;
NS_IMETHOD
InheritAutomaticData(nsIFrame* aParent) final;
NS_IMETHOD
TransmitAutomaticData() override;
void GetRadicalXOffsets(nscoord aIndexWidth, nscoord aSqrWidth,
nsFontMetrics* aFontMetrics, nscoord* aIndexOffset,
nscoord* aSqrOffset);
void BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsDisplayListSet& aLists) override;
uint8_t ScriptIncrement(nsIFrame* aFrame) override {
return (aFrame && aFrame == mFrames.LastChild()) ? 2 : 0;
}
protected:
explicit nsMathMLmrootFrame(ComputedStyle* aStyle,
nsPresContext* aPresContext);
virtual ~nsMathMLmrootFrame();
nsMathMLChar mSqrChar;
nsRect mBarRect;
private:
bool ShouldUseRowFallback();
bool IsMrowLike() final;
nsresult Place(DrawTarget* aDrawTarget, const PlaceFlags& aFlags,
ReflowOutput& aDesiredSize) final;
};
#endif /* nsMathMLmrootFrame_h___ */
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