1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
3 /* This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
7 #ifndef nsMathMLmsqrtFrame_h___
8 #define nsMathMLmsqrtFrame_h___
10 #include "mozilla/Attributes.h"
11 #include "nsMathMLmencloseFrame.h"
15 } // namespace mozilla
18 // <msqrt> -- form a radical
22 The MathML REC describes:
24 The <msqrt> element is used to display square roots.
25 The syntax for <msqrt> is:
28 Attributes of <msqrt> and <mroot>:
30 None (except the attributes allowed for all MathML elements, listed in Section
33 The <mroot> element increments scriptlevel by 2, and sets displaystyle to
34 "false", within index, but leaves both attributes unchanged within base. The
35 <msqrt> element leaves both attributes unchanged within all its arguments.
36 These attributes are inherited by every element from its rendering environment,
37 but can be set explicitly only on <mstyle>. (See Section 3.3.4.)
40 // XXXfredw: This class should share its layout logic with nsMathMLmrootFrame
41 // when the menclose "radical" notation is removed.
42 // See https://bugzilla.mozilla.org/show_bug.cgi?id=1548522
43 class nsMathMLmsqrtFrame final
: public nsMathMLmencloseFrame
{
45 NS_DECL_FRAMEARENA_HELPERS(nsMathMLmsqrtFrame
)
47 friend nsIFrame
* NS_NewMathMLmsqrtFrame(mozilla::PresShell
* aPresShell
,
48 ComputedStyle
* aStyle
);
50 virtual void Init(nsIContent
* aContent
, nsContainerFrame
* aParent
,
51 nsIFrame
* aPrevInFlow
) override
;
54 InheritAutomaticData(nsIFrame
* aParent
) override
;
56 virtual nsresult
AttributeChanged(int32_t aNameSpaceID
, nsAtom
* aAttribute
,
57 int32_t aModType
) override
;
59 virtual bool IsMrowLike() override
{
60 return mFrames
.FirstChild() != mFrames
.LastChild() || !mFrames
.FirstChild();
64 explicit nsMathMLmsqrtFrame(ComputedStyle
* aStyle
,
65 nsPresContext
* aPresContext
);
66 virtual ~nsMathMLmsqrtFrame();
69 #endif /* nsMathMLmsqrtFrame_h___ */