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