pjs/layout/mathml/nsMathMLmoFrame.h

127 строки
4.3 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla MathML Project.
*
* The Initial Developer of the Original Code is
* The University Of Queensland.
* Portions created by the Initial Developer are Copyright (C) 1999
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Roger B. Sidje <rbs@maths.uq.edu.au>
* David J. Fiddes <D.J.Fiddes@hw.ac.uk>
* Shyjan Mahamud <mahamud@cs.cmu.edu>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef nsMathMLmoFrame_h___
#define nsMathMLmoFrame_h___
#include "nsCOMPtr.h"
#include "nsMathMLTokenFrame.h"
//
// <mo> -- operator, fence, or separator
//
class nsMathMLmoFrame : public nsMathMLTokenFrame {
public:
NS_DECL_FRAMEARENA_HELPERS
friend nsIFrame* NS_NewMathMLmoFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
virtual eMathMLFrameType GetMathMLFrameType();
virtual void
SetAdditionalStyleContext(PRInt32 aIndex,
nsStyleContext* aStyleContext);
virtual nsStyleContext*
GetAdditionalStyleContext(PRInt32 aIndex) const;
NS_IMETHOD BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists);
NS_IMETHOD
InheritAutomaticData(nsIFrame* aParent);
NS_IMETHOD
TransmitAutomaticData();
NS_IMETHOD
Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus);
virtual void MarkIntrinsicWidthsDirty();
virtual nscoord
GetIntrinsicWidth(nsRenderingContext *aRenderingContext);
NS_IMETHOD
AttributeChanged(PRInt32 aNameSpaceID,
nsIAtom* aAttribute,
PRInt32 aModType);
// This method is called by the parent frame to ask <mo>
// to stretch itself.
NS_IMETHOD
Stretch(nsRenderingContext& aRenderingContext,
nsStretchDirection aStretchDirection,
nsBoundingMetrics& aContainerSize,
nsHTMLReflowMetrics& aDesiredStretchSize);
protected:
nsMathMLmoFrame(nsStyleContext* aContext) : nsMathMLTokenFrame(aContext) {}
virtual ~nsMathMLmoFrame();
virtual PRIntn GetSkipSides() const { return 0; }
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
virtual 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___ */