Source code
Revision control
Copy as Markdown
Other Tools
/* -*- 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
#ifndef nsMathMLmpaddedFrame_h___
#define nsMathMLmpaddedFrame_h___
#include "mozilla/Attributes.h"
#include "nsCSSValue.h"
#include "nsMathMLContainerFrame.h"
namespace mozilla {
class PresShell;
} // namespace mozilla
//
// <mpadded> -- adjust space around content
//
class nsMathMLmpaddedFrame final : public nsMathMLContainerFrame {
public:
NS_DECL_FRAMEARENA_HELPERS(nsMathMLmpaddedFrame)
friend nsIFrame* NS_NewMathMLmpaddedFrame(mozilla::PresShell* aPresShell,
ComputedStyle* aStyle);
NS_IMETHOD
InheritAutomaticData(nsIFrame* aParent) override;
NS_IMETHOD
TransmitAutomaticData() override {
return TransmitAutomaticDataForMrowLikeElement();
}
nsresult Place(DrawTarget* aDrawTarget, const PlaceFlags& aFlags,
ReflowOutput& aDesiredSize) override;
bool IsMrowLike() override {
return mFrames.FirstChild() != mFrames.LastChild() || !mFrames.FirstChild();
}
protected:
explicit nsMathMLmpaddedFrame(ComputedStyle* aStyle,
nsPresContext* aPresContext)
: nsMathMLContainerFrame(aStyle, aPresContext, kClassID) {}
virtual ~nsMathMLmpaddedFrame();
private:
struct Attribute {
enum class Sign : uint8_t {
Unspecified,
Minus,
Plus,
};
enum class PseudoUnit : uint8_t {
Unspecified,
ItSelf,
Width,
Height,
Depth,
NamedSpace,
};
nsCSSValue mValue;
Sign mSign = Sign::Unspecified;
PseudoUnit mPseudoUnit = PseudoUnit::Unspecified;
enum class ParsingState : uint8_t {
Valid,
Invalid,
Dirty,
};
ParsingState mState = ParsingState::Dirty;
void Reset() {
mValue.Reset();
mSign = Sign::Unspecified;
mPseudoUnit = PseudoUnit::Unspecified;
mState = ParsingState::Dirty;
}
bool IsValid() const { return mState == ParsingState::Valid; }
};
Attribute mWidth;
Attribute mHeight;
Attribute mDepth;
Attribute mLeadingSpace;
Attribute mVerticalOffset;
nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
int32_t aModType) final;
void ParseAttribute(nsAtom* aAtom, Attribute& aAttribute);
bool ParseAttribute(nsString& aString, Attribute& aAttribute);
void UpdateValue(const Attribute& aAttribute, Attribute::PseudoUnit aSelfUnit,
const ReflowOutput& aDesiredSize, nscoord& aValueToUpdate,
float aFontSizeInflation) const;
};
#endif /* nsMathMLmpaddedFrame_h___ */