182 lines
6.9 KiB
C++
182 lines
6.9 KiB
C++
/*
|
|
* 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 University Of Queensland are
|
|
* Copyright (C) 1999 The University Of Queensland. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* Roger B. Sidje <rbs@maths.uq.edu.au>
|
|
*/
|
|
|
|
#ifndef nsMathMLOperators_h___
|
|
#define nsMathMLOperators_h___
|
|
|
|
#include "nsCoord.h"
|
|
|
|
typedef PRUint32 nsOperatorFlags;
|
|
typedef PRInt32 nsStretchDirection;
|
|
|
|
#define NS_STRETCH_DIRECTION_UNSUPPORTED -1
|
|
#define NS_STRETCH_DIRECTION_DEFAULT 0
|
|
#define NS_STRETCH_DIRECTION_HORIZONTAL 1
|
|
#define NS_STRETCH_DIRECTION_VERTICAL 2
|
|
|
|
// define the bits used to handle the operator
|
|
|
|
#define NS_MATHML_OPERATOR_MUTABLE 0x80000000 // the very first bit
|
|
#define NS_MATHML_OPERATOR_EMBELLISH_ANCESTOR 0x40000000 // the second bit
|
|
#define NS_MATHML_OPERATOR_CENTERED 0x20000000 // the third bit
|
|
|
|
// define the bits used in the Operator Dictionary
|
|
// XXX replace with the PR_BIT(n) macro
|
|
|
|
#define NS_MATHML_OPERATOR_FORM 0x3 // the very last two bits tell us the form
|
|
#define NS_MATHML_OPERATOR_FORM_INFIX 1
|
|
#define NS_MATHML_OPERATOR_FORM_PREFIX 2
|
|
#define NS_MATHML_OPERATOR_FORM_POSTFIX 3
|
|
#define NS_MATHML_OPERATOR_STRETCHY 0xC // the 2 penultimate last bits are used
|
|
#define NS_MATHML_OPERATOR_STRETCHY_VERT (1<<2)
|
|
#define NS_MATHML_OPERATOR_STRETCHY_HORIZ (1<<3)
|
|
#define NS_MATHML_OPERATOR_FENCE (1<<4)
|
|
#define NS_MATHML_OPERATOR_ACCENT (1<<5)
|
|
#define NS_MATHML_OPERATOR_LARGEOP (1<<6)
|
|
#define NS_MATHML_OPERATOR_SEPARATOR (1<<7)
|
|
#define NS_MATHML_OPERATOR_MOVABLELIMITS (1<<8)
|
|
#define NS_MATHML_OPERATOR_SYMMETRIC (1<<9)
|
|
|
|
// Additional bits not stored in the dictionary
|
|
|
|
#define NS_MATHML_OPERATOR_MINSIZE_EXPLICIT (1<<10)
|
|
#define NS_MATHML_OPERATOR_MAXSIZE_EXPLICIT (1<<11)
|
|
|
|
|
|
class nsMathMLOperators {
|
|
public:
|
|
static void AddRefTable(void);
|
|
static void ReleaseTable(void);
|
|
|
|
// LookupOperator:
|
|
// Given the string value of an operator and its form (last two bits of flags),
|
|
// this method returns true if the operator is found in the Operator Dictionary.
|
|
// Attributes of the operator are returned in the output parameters.
|
|
// If the operator is not found under the supplied form but is found under a
|
|
// different form, the method returns true as well. The caller can test the
|
|
// output parameter aFlags to know exactly under which form the operator was
|
|
// found in the Operator Dictionary.
|
|
static PRBool
|
|
LookupOperator(const nsString& aOperator,
|
|
const nsOperatorFlags aForm,
|
|
nsOperatorFlags* aFlags,
|
|
float* aLeftSpace,
|
|
float* aRightSpace);
|
|
|
|
// IsMutableOperator:
|
|
// Return true if the operator exists and is stretchy or largeop
|
|
static PRBool
|
|
IsMutableOperator(const nsString& aOperator);
|
|
|
|
// Helper functions for stretchy operators. These are used by the
|
|
// nsMathMLChar class.
|
|
static PRInt32 CountStretchyOperator();
|
|
static PRInt32 FindStretchyOperator(PRUnichar aOperator);
|
|
static nsStretchDirection GetStretchyDirectionAt(PRInt32 aIndex);
|
|
static void DisableStretchyOperatorAt(PRInt32 aIndex);
|
|
|
|
|
|
// Style invariant chararacters (chars have their own intrinsic predefined style)
|
|
enum eMATHVARIANT {
|
|
eMATHVARIANT_NONE = -1,
|
|
eMATHVARIANT_normal = 0,
|
|
eMATHVARIANT_bold,
|
|
eMATHVARIANT_italic,
|
|
eMATHVARIANT_bold_italic,
|
|
eMATHVARIANT_sans_serif,
|
|
eMATHVARIANT_bold_sans_serif,
|
|
eMATHVARIANT_sans_serif_italic,
|
|
eMATHVARIANT_sans_serif_bold_italic,
|
|
eMATHVARIANT_monospace,
|
|
eMATHVARIANT_script,
|
|
eMATHVARIANT_bold_script,
|
|
eMATHVARIANT_fraktur,
|
|
eMATHVARIANT_bold_fraktur,
|
|
eMATHVARIANT_double_struck,
|
|
eMATHVARIANT_COUNT
|
|
};
|
|
static PRBool LookupInvariantChar(PRUnichar aChar,
|
|
eMATHVARIANT* aType = nsnull);
|
|
};
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////////////
|
|
// Macros that retrieve the bits used to handle operators
|
|
|
|
#define NS_MATHML_OPERATOR_IS_MUTABLE(_flags) \
|
|
(NS_MATHML_OPERATOR_MUTABLE == ((_flags) & NS_MATHML_OPERATOR_MUTABLE))
|
|
|
|
#define NS_MATHML_OPERATOR_HAS_EMBELLISH_ANCESTOR(_flags) \
|
|
(NS_MATHML_OPERATOR_EMBELLISH_ANCESTOR == ((_flags) & NS_MATHML_OPERATOR_EMBELLISH_ANCESTOR))
|
|
|
|
#define NS_MATHML_OPERATOR_IS_CENTERED(_flags) \
|
|
(NS_MATHML_OPERATOR_CENTERED == ((_flags) & NS_MATHML_OPERATOR_CENTERED))
|
|
|
|
#define NS_MATHML_OPERATOR_GET_FORM(_flags) \
|
|
((_flags) & NS_MATHML_OPERATOR_FORM)
|
|
|
|
#define NS_MATHML_OPERATOR_GET_STRETCHY_DIR(_flags) \
|
|
((_flags) & NS_MATHML_OPERATOR_STRETCHY)
|
|
|
|
#define NS_MATHML_OPERATOR_FORM_IS_INFIX(_flags) \
|
|
(NS_MATHML_OPERATOR_FORM_INFIX == ((_flags) & NS_MATHML_OPERATOR_FORM_INFIX))
|
|
|
|
#define NS_MATHML_OPERATOR_FORM_IS_PREFIX(_flags) \
|
|
(NS_MATHML_OPERATOR_FORM_PREFIX == ((_flags) & NS_MATHML_OPERATOR_FORM_PREFIX))
|
|
|
|
#define NS_MATHML_OPERATOR_FORM_IS_POSTFIX(_flags) \
|
|
(NS_MATHML_OPERATOR_FORM_POSTFIX == ((_flags) & NS_MATHML_OPERATOR_FORM_POSTFIX ))
|
|
|
|
#define NS_MATHML_OPERATOR_IS_STRETCHY(_flags) \
|
|
(0 != ((_flags) & NS_MATHML_OPERATOR_STRETCHY))
|
|
|
|
#define NS_MATHML_OPERATOR_IS_STRETCHY_VERT(_flags) \
|
|
(NS_MATHML_OPERATOR_STRETCHY_VERT == ((_flags) & NS_MATHML_OPERATOR_STRETCHY_VERT))
|
|
|
|
#define NS_MATHML_OPERATOR_IS_STRETCHY_HORIZ(_flags) \
|
|
(NS_MATHML_OPERATOR_STRETCHY_HORIZ == ((_flags) & NS_MATHML_OPERATOR_STRETCHY_HORIZ))
|
|
|
|
#define NS_MATHML_OPERATOR_IS_FENCE(_flags) \
|
|
(NS_MATHML_OPERATOR_FENCE == ((_flags) & NS_MATHML_OPERATOR_FENCE))
|
|
|
|
#define NS_MATHML_OPERATOR_IS_ACCENT(_flags) \
|
|
(NS_MATHML_OPERATOR_ACCENT == ((_flags) & NS_MATHML_OPERATOR_ACCENT))
|
|
|
|
#define NS_MATHML_OPERATOR_IS_LARGEOP(_flags) \
|
|
(NS_MATHML_OPERATOR_LARGEOP == ((_flags) & NS_MATHML_OPERATOR_LARGEOP))
|
|
|
|
#define NS_MATHML_OPERATOR_IS_SEPARATOR(_flags) \
|
|
(NS_MATHML_OPERATOR_SEPARATOR == ((_flags) & NS_MATHML_OPERATOR_SEPARATOR))
|
|
|
|
#define NS_MATHML_OPERATOR_IS_MOVABLELIMITS(_flags) \
|
|
(NS_MATHML_OPERATOR_MOVABLELIMITS == ((_flags) & NS_MATHML_OPERATOR_MOVABLELIMITS))
|
|
|
|
#define NS_MATHML_OPERATOR_IS_SYMMETRIC(_flags) \
|
|
(NS_MATHML_OPERATOR_SYMMETRIC == ((_flags) & NS_MATHML_OPERATOR_SYMMETRIC))
|
|
|
|
#define NS_MATHML_OPERATOR_MINSIZE_IS_EXPLICIT(_flags) \
|
|
(NS_MATHML_OPERATOR_MINSIZE_EXPLICIT == ((_flags) & NS_MATHML_OPERATOR_MINSIZE_EXPLICIT))
|
|
|
|
#define NS_MATHML_OPERATOR_MAXSIZE_IS_EXPLICIT(_flags) \
|
|
(NS_MATHML_OPERATOR_MAXSIZE_EXPLICIT == ((_flags) & NS_MATHML_OPERATOR_MAXSIZE_EXPLICIT))
|
|
|
|
#endif /* nsMathMLOperators_h___ */
|