michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "nsMathMLmsqrtFrame.h"
michael@0: #include "mozilla/gfx/2D.h"
michael@0: 
michael@0: //
michael@0: // <msqrt> -- form a radical - implementation
michael@0: //
michael@0: 
michael@0: //NOTE:
michael@0: //  The code assumes that TeX fonts are picked.
michael@0: //  There is no fall-back to draw the branches of the sqrt explicitly
michael@0: //  in the case where TeX fonts are not there. In general, there are no
michael@0: //  fall-back(s) in MathML when some (freely-downloadable) fonts are missing.
michael@0: //  Otherwise, this will add much work and unnecessary complexity to the core
michael@0: //  MathML  engine. Assuming that authors have the free fonts is part of the
michael@0: //  deal. We are not responsible for cases of misconfigurations out there.
michael@0: 
michael@0: nsIFrame*
michael@0: NS_NewMathMLmsqrtFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
michael@0: {
michael@0:   return new (aPresShell) nsMathMLmsqrtFrame(aContext);
michael@0: }
michael@0: 
michael@0: NS_IMPL_FRAMEARENA_HELPERS(nsMathMLmsqrtFrame)
michael@0: 
michael@0: nsMathMLmsqrtFrame::nsMathMLmsqrtFrame(nsStyleContext* aContext) :
michael@0:   nsMathMLmencloseFrame(aContext)
michael@0: {
michael@0: }
michael@0: 
michael@0: nsMathMLmsqrtFrame::~nsMathMLmsqrtFrame()
michael@0: {
michael@0: }
michael@0: 
michael@0: void
michael@0: nsMathMLmsqrtFrame::Init(nsIContent*      aContent,
michael@0:                          nsIFrame*        aParent,
michael@0:                          nsIFrame*        aPrevInFlow)
michael@0: {
michael@0:   nsMathMLContainerFrame::Init(aContent, aParent, aPrevInFlow);
michael@0:   AllocateMathMLChar(NOTATION_RADICAL);
michael@0:   mNotationsToDraw |= NOTATION_RADICAL;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsMathMLmsqrtFrame::InheritAutomaticData(nsIFrame* aParent)
michael@0: {
michael@0:   nsMathMLContainerFrame::InheritAutomaticData(aParent);
michael@0: 
michael@0:   mPresentationData.flags |= NS_MATHML_STRETCH_ALL_CHILDREN_VERTICALLY;
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: nsMathMLmsqrtFrame::AttributeChanged(int32_t         aNameSpaceID,
michael@0:                                      nsIAtom*        aAttribute,
michael@0:                                      int32_t         aModType)
michael@0: {
michael@0:   return nsMathMLContainerFrame::
michael@0:     AttributeChanged(aNameSpaceID, aAttribute, aModType);
michael@0: }