100 lines
2.8 KiB
C++
100 lines
2.8 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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 nsMathMLmpaddedFrame_h___
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#define nsMathMLmpaddedFrame_h___
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#include "mozilla/Attributes.h"
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#include "nsCSSValue.h"
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#include "nsMathMLContainerFrame.h"
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namespace mozilla {
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class PresShell;
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} // namespace mozilla
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//
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// <mpadded> -- adjust space around content
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//
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class nsMathMLmpaddedFrame final : public nsMathMLContainerFrame {
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public:
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NS_DECL_FRAMEARENA_HELPERS(nsMathMLmpaddedFrame)
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friend nsIFrame* NS_NewMathMLmpaddedFrame(mozilla::PresShell* aPresShell,
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ComputedStyle* aStyle);
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NS_IMETHOD
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InheritAutomaticData(nsIFrame* aParent) override;
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NS_IMETHOD
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TransmitAutomaticData() override {
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return TransmitAutomaticDataForMrowLikeElement();
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}
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nsresult Place(DrawTarget* aDrawTarget, const PlaceFlags& aFlags,
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ReflowOutput& aDesiredSize) override;
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bool IsMrowLike() override {
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return mFrames.FirstChild() != mFrames.LastChild() || !mFrames.FirstChild();
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}
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protected:
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explicit nsMathMLmpaddedFrame(ComputedStyle* aStyle,
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nsPresContext* aPresContext)
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: nsMathMLContainerFrame(aStyle, aPresContext, kClassID) {}
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virtual ~nsMathMLmpaddedFrame();
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private:
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struct Attribute {
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enum class Sign : uint8_t {
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Unspecified,
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Minus,
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Plus,
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};
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enum class PseudoUnit : uint8_t {
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Unspecified,
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ItSelf,
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Width,
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Height,
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Depth,
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NamedSpace,
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};
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nsCSSValue mValue;
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Sign mSign = Sign::Unspecified;
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PseudoUnit mPseudoUnit = PseudoUnit::Unspecified;
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enum class ParsingState : uint8_t {
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Valid,
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Invalid,
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Dirty,
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};
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ParsingState mState = ParsingState::Dirty;
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void Reset() {
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mValue.Reset();
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mSign = Sign::Unspecified;
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mPseudoUnit = PseudoUnit::Unspecified;
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mState = ParsingState::Dirty;
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}
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bool IsValid() const { return mState == ParsingState::Valid; }
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};
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Attribute mWidth;
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Attribute mHeight;
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Attribute mDepth;
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Attribute mLeadingSpace;
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Attribute mVerticalOffset;
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nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
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int32_t aModType) final;
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void ParseAttribute(nsAtom* aAtom, Attribute& aAttribute);
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bool ParseAttribute(nsString& aString, Attribute& aAttribute);
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void UpdateValue(const Attribute& aAttribute, Attribute::PseudoUnit aSelfUnit,
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const ReflowOutput& aDesiredSize, nscoord& aValueToUpdate,
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float aFontSizeInflation);
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};
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#endif /* nsMathMLmpaddedFrame_h___ */
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