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db3d138f43
Depends on D229249 Differential Revision: https://phabricator.services.mozilla.com/D229250
70 lines
2.3 KiB
C++
70 lines
2.3 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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#include "nsMathMLmrowFrame.h"
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#include "mozilla/PresShell.h"
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#include "mozilla/gfx/2D.h"
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using namespace mozilla;
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//
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// <mrow> -- horizontally group any number of subexpressions - implementation
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//
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nsIFrame* NS_NewMathMLmrowFrame(PresShell* aPresShell, ComputedStyle* aStyle) {
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return new (aPresShell)
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nsMathMLmrowFrame(aStyle, aPresShell->GetPresContext());
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}
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NS_IMPL_FRAMEARENA_HELPERS(nsMathMLmrowFrame)
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nsMathMLmrowFrame::~nsMathMLmrowFrame() = default;
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NS_IMETHODIMP
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nsMathMLmrowFrame::InheritAutomaticData(nsIFrame* aParent) {
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// let the base class get the default from our parent
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nsMathMLContainerFrame::InheritAutomaticData(aParent);
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mPresentationData.flags |= NS_MATHML_STRETCH_ALL_CHILDREN_VERTICALLY;
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return NS_OK;
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}
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nsresult nsMathMLmrowFrame::AttributeChanged(int32_t aNameSpaceID,
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nsAtom* aAttribute,
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int32_t aModType) {
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// Special for <mtable>: In the frame construction code, we also use
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// this frame class as a wrapper for mtable. Hence, we should pass the
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// notification to the real mtable
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if (mContent->IsMathMLElement(nsGkAtoms::mtable_)) {
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nsIFrame* frame = mFrames.FirstChild();
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for (; frame; frame = frame->PrincipalChildList().FirstChild()) {
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// drill down to the real mtable
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if (frame->IsTableWrapperFrame()) {
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return frame->AttributeChanged(aNameSpaceID, aAttribute, aModType);
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}
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}
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MOZ_ASSERT_UNREACHABLE("mtable wrapper without the real table frame");
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}
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return nsMathMLContainerFrame::AttributeChanged(aNameSpaceID, aAttribute,
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aModType);
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}
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/* virtual */
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eMathMLFrameType nsMathMLmrowFrame::GetMathMLFrameType() {
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if (!IsMrowLike()) {
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nsIMathMLFrame* child = do_QueryFrame(mFrames.FirstChild());
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if (child) {
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// We only have one child, so we return the frame type of that child as if
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// we didn't exist.
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return child->GetMathMLFrameType();
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}
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}
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return nsMathMLFrame::GetMathMLFrameType();
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}
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