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
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef INCLUDED_SVX_ENHANCEDCUSTOMSHAPEFUNCTIONPARSER_HXX
#define INCLUDED_SVX_ENHANCEDCUSTOMSHAPEFUNCTIONPARSER_HXX
#include <config_options.h>
#include <sal/config.h>
#include <com/sun/star/drawing/EnhancedCustomShapeParameter.hpp>
#include <memory>
#include <ostream>
#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 class ExpressionFunct
{
Const,
EnumPi,
EnumLeft,
EnumTop,
EnumRight,
EnumBottom,
EnumXStretch,
EnumYStretch,
EnumHasStroke,
EnumHasFill,
EnumWidth,
EnumHeight,
EnumLogWidth,
EnumLogHeight,
EnumAdjustment,
EnumEquation,
UnaryAbs,
UnarySqrt,
UnarySin,
UnaryCos,
UnaryTan,
UnaryAtan,
UnaryNeg,
BinaryPlus,
BinaryMinus,
BinaryMul,
BinaryDiv,
BinaryMin,
BinaryMax,
BinaryAtan2,
TernaryIf
};
template< typename charT, typename traits >
inline std::basic_ostream<charT, traits> & operator <<(
std::basic_ostream<charT, traits> & stream, const ExpressionFunct& eFunc )
{
switch (eFunc)
{
case ExpressionFunct::Const : return stream << "const";
case ExpressionFunct::EnumPi : return stream << "pi";
case ExpressionFunct::EnumLeft : return stream << "left";
case ExpressionFunct::EnumTop : return stream << "top";
case ExpressionFunct::EnumRight : return stream << "right";
case ExpressionFunct::EnumBottom : return stream << "bottom";
case ExpressionFunct::EnumXStretch : return stream << "xstretch";
case ExpressionFunct::EnumYStretch : return stream << "ystretch";
case ExpressionFunct::EnumHasStroke : return stream << "hasstroke";
case ExpressionFunct::EnumHasFill : return stream << "hasfill";
case ExpressionFunct::EnumWidth : return stream << "width";
case ExpressionFunct::EnumHeight : return stream << "height";
case ExpressionFunct::EnumLogWidth : return stream << "logwidth";
case ExpressionFunct::EnumLogHeight : return stream << "logheight";
case ExpressionFunct::EnumAdjustment : return stream << "adjustment";
case ExpressionFunct::EnumEquation : return stream << "equation";
case ExpressionFunct::UnaryAbs : return stream << "abs";
case ExpressionFunct::UnarySqrt : return stream << "sqrt";
case ExpressionFunct::UnarySin : return stream << "sin";
case ExpressionFunct::UnaryCos : return stream << "cos";
case ExpressionFunct::UnaryTan : return stream << "tan";
case ExpressionFunct::UnaryAtan : return stream << "atan";
case ExpressionFunct::UnaryNeg : return stream << "neg";
case ExpressionFunct::BinaryPlus : return stream << "plus";
case ExpressionFunct::BinaryMinus : return stream << "minus";
case ExpressionFunct::BinaryMul : return stream << "mul";
case ExpressionFunct::BinaryDiv : return stream << "div";
case ExpressionFunct::BinaryMin : return stream << "min";
case ExpressionFunct::BinaryMax : return stream << "max";
case ExpressionFunct::BinaryAtan2 : return stream << "atan2";
case ExpressionFunct::TernaryIf : return stream << "if";
default: return stream << "?(" << static_cast<int>(eFunc) << ")";
}
}
#define EXPRESSION_FLAG_SUMANGLE_MODE 1
SVXCORE_DLLPUBLIC void FillEquationParameter( const css::drawing::EnhancedCustomShapeParameter&, const sal_Int32, EnhancedCustomShapeEquation& );
class SAL_DLLPUBLIC_RTTI 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 optimizations, 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 css::drawing::EnhancedCustomShapeParameter fillNode(
std::vector< EnhancedCustomShapeEquation >& rEquations, ExpressionNode* pOptionalArg, sal_uInt32 nFlags ) = 0;
};
/** This exception is thrown, when the arithmetic expression
parser failed to parse a string.
*/
struct 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.
*/
UNLESS_MERGELIBS(SVXCORE_DLLPUBLIC) static std::shared_ptr<ExpressionNode> const & parseFunction( const OUString& rFunction, const EnhancedCustomShape2d& rCustoShape );
// this is a singleton
FunctionParser() = delete;
FunctionParser(const FunctionParser&) = delete;
FunctionParser& operator=( const FunctionParser& ) = delete;
};
}
#endif // INCLUDED_SVX_ENHANCEDCUSTOMSHAPEFUNCTIONPARSER_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
