1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
|
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2008 by Sun Microsystems, Inc.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: EnhancedCustomShapeFunctionParser.hxx,v $
* $Revision: 1.4 $
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#ifndef _ENHANCEDCUSTOMSHAPEFUNCTIONPARSER_HXX
#define _ENHANCEDCUSTOMSHAPEFUNCTIONPARSER_HXX
#include <sal/config.h>
#include <boost/shared_ptr.hpp>
#include "EnhancedCustomShapeFunctionParser.hxx"
#include <com/sun/star/drawing/EnhancedCustomShapeParameter.hpp>
#include <com/sun/star/drawing/EnhancedCustomShapeParameterType.hpp>
#include <vector>
#include <svx/svxdllapi.h>
struct EnhancedCustomShapeEquation
{
sal_Int32 nOperation;
sal_Int32 nPara[ 3 ];
EnhancedCustomShapeEquation() :
nOperation ( 0 )
{
nPara[ 0 ] = nPara[ 1 ] = nPara[ 2 ] = 0;
}
};
class EnhancedCustomShape2d;
namespace EnhancedCustomShape {
enum ExpressionFunct
{
FUNC_CONST,
ENUM_FUNC_PI,
ENUM_FUNC_LEFT,
ENUM_FUNC_TOP,
ENUM_FUNC_RIGHT,
ENUM_FUNC_BOTTOM,
ENUM_FUNC_XSTRETCH,
ENUM_FUNC_YSTRETCH,
ENUM_FUNC_HASSTROKE,
ENUM_FUNC_HASFILL,
ENUM_FUNC_WIDTH,
ENUM_FUNC_HEIGHT,
ENUM_FUNC_LOGWIDTH,
ENUM_FUNC_LOGHEIGHT,
ENUM_FUNC_ADJUSTMENT,
ENUM_FUNC_EQUATION,
UNARY_FUNC_ABS,
UNARY_FUNC_SQRT,
UNARY_FUNC_SIN,
UNARY_FUNC_COS,
UNARY_FUNC_TAN,
UNARY_FUNC_ATAN,
UNARY_FUNC_NEG,
BINARY_FUNC_PLUS,
BINARY_FUNC_MINUS,
BINARY_FUNC_MUL,
BINARY_FUNC_DIV,
BINARY_FUNC_MIN,
BINARY_FUNC_MAX,
BINARY_FUNC_ATAN2,
TERNARY_FUNC_IF
};
#define EXPRESSION_FLAG_SUMANGLE_MODE 1
SVX_DLLPUBLIC void FillEquationParameter( const com::sun::star::drawing::EnhancedCustomShapeParameter&, const sal_Int32, EnhancedCustomShapeEquation& );
class ExpressionNode
{
public:
virtual ~ExpressionNode();
/** Predicate whether this node is constant.
This predicate returns true, if this node is
neither time- nor ViewInfo dependent. This allows
for certain obtimizations, i.e. not the full
expression tree needs be represented by
ExpressionNodes.
@returns true, if the note is constant
*/
virtual bool isConstant() const = 0;
/** Operator to calculate function value.
This method calculates the function value.
*/
virtual double operator()() const = 0;
/** Operator to retrieve the type of expression node
*/
virtual ExpressionFunct getType() const = 0;
/** Operator to retrieve the ms version of expression
*/
virtual com::sun::star::drawing::EnhancedCustomShapeParameter fillNode(
std::vector< EnhancedCustomShapeEquation >& rEquations, ExpressionNode* pOptionalArg, sal_uInt32 nFlags ) = 0;
};
typedef ::boost::shared_ptr< ExpressionNode > ExpressionNodeSharedPtr;
/** This exception is thrown, when the arithmetic expression
parser failed to parse a string.
*/
struct ParseError
{
ParseError() {}
ParseError( const char* ) {}
};
class FunctionParser
{
public:
/** Parse a string
The following grammar is accepted by this method:
<code>
number_digit = '0'|'1'|'2'|'3'|'4'|'5'|'6'|'7'|'8'|'9'
number = number number_digit | number_digit
identifier = 'pi'|'left'|'top'|'right'|'bottom'|'xstretch'|'ystretch'|
'hasstroke'|'hasfill'|'width'|'height'|'logwidth'|'logheight'
unary_function = 'abs'|'sqrt'|'sin'|'cos'|'tan'|'atan'
binary_function = 'min'|'max'|'atan2'
ternary_function = 'if'
function_reference = '?' 'a-z,A-Z,0-9' ' '
modifier_reference = '$' '0-9' ' '
basic_expression =
number |
identifier |
function_reference |
unary_function '(' additive_expression ')' |
binary_function '(' additive_expression ',' additive_expression ')' |
ternary_function '(' additive_expression ',' additive_expression ',
' additive_expression ')' | '(' additive_expression ')'
unary_expression = '-' basic_expression
multiplicative_expression =
basic_expression |
multiplicative_expression '*' basic_expression |
multiplicative_expression '/' basic_expression
additive_expression =
multiplicative_expression |
additive_expression '+' multiplicative_expression |
additive_expression '-' multiplicative_expression
</code>
@param rFunction
The string to parse
@param rCustoShape
The CustomShape is required for calculation of dynamic values such
"hasstroke", function references and or modifier references ...
@throws ParseError if an invalid expression is given.
@return the generated function object.
*/
SVX_DLLPUBLIC static ExpressionNodeSharedPtr parseFunction( const ::rtl::OUString& rFunction, const EnhancedCustomShape2d& rCustoShape );
private:
// disabled constructor/destructor, since this is
// supposed to be a singleton
FunctionParser();
// default: disabled copy/assignment
FunctionParser(const FunctionParser&);
FunctionParser& operator=( const FunctionParser& );
};
}
#endif /* _ENHANCEDCUSTOMSHAPEFUNCTIONPARSER_HXX */
|
