forked from mirrors/gecko-dev
100 lines
3.2 KiB
C++
100 lines
3.2 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 nsMathMLmoFrame_h___
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#define nsMathMLmoFrame_h___
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#include "mozilla/Attributes.h"
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#include "nsMathMLTokenFrame.h"
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#include "nsMathMLChar.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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// <mo> -- operator, fence, or separator
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//
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class nsMathMLmoFrame final : public nsMathMLTokenFrame {
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public:
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NS_DECL_FRAMEARENA_HELPERS(nsMathMLmoFrame)
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friend nsIFrame* NS_NewMathMLmoFrame(mozilla::PresShell* aPresShell,
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ComputedStyle* aStyle);
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eMathMLFrameType GetMathMLFrameType() override;
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void DidSetComputedStyle(ComputedStyle* aOldStyle) override;
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void BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsDisplayListSet& aLists) override;
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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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void SetInitialChildList(ChildListID aListID,
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nsFrameList&& aChildList) override;
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virtual void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,
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const ReflowInput& aReflowInput,
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nsReflowStatus& aStatus) override;
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virtual nsresult Place(DrawTarget* aDrawTarget, bool aPlaceOrigin,
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ReflowOutput& aDesiredSize) override;
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virtual void MarkIntrinsicISizesDirty() override;
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virtual void GetIntrinsicISizeMetrics(gfxContext* aRenderingContext,
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ReflowOutput& aDesiredSize) override;
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virtual nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
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int32_t aModType) override;
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// This method is called by the parent frame to ask <mo>
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// to stretch itself.
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NS_IMETHOD
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Stretch(DrawTarget* aDrawTarget, nsStretchDirection aStretchDirection,
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nsBoundingMetrics& aContainerSize,
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ReflowOutput& aDesiredStretchSize) override;
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virtual nsresult ChildListChanged(int32_t aModType) override {
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ProcessTextData();
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return nsMathMLContainerFrame::ChildListChanged(aModType);
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}
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protected:
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explicit nsMathMLmoFrame(ComputedStyle* aStyle, nsPresContext* aPresContext)
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: nsMathMLTokenFrame(aStyle, aPresContext, kClassID),
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mFlags(0),
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mMinSize(0),
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mMaxSize(0) {}
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virtual ~nsMathMLmoFrame();
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nsMathMLChar
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mMathMLChar; // Here is the MathMLChar that will deal with the operator.
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nsOperatorFlags mFlags;
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float mMinSize;
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float mMaxSize;
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bool UseMathMLChar();
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// overload the base method so that we can setup our nsMathMLChar
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void ProcessTextData();
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// helper to get our 'form' and lookup in the Operator Dictionary to fetch
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// our default data that may come from there, and to complete the setup
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// using attributes that we may have
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void ProcessOperatorData();
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// helper to double check thar our char should be rendered as a selected char
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bool IsFrameInSelection(nsIFrame* aFrame);
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};
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#endif /* nsMathMLmoFrame_h___ */
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