summaryrefslogtreecommitdiffstats
path: root/include/svx/EnhancedCustomShapeFunctionParser.hxx
diff options
context:
space:
mode:
Diffstat (limited to 'include/svx/EnhancedCustomShapeFunctionParser.hxx')
-rw-r--r--include/svx/EnhancedCustomShapeFunctionParser.hxx249
1 files changed, 249 insertions, 0 deletions
diff --git a/include/svx/EnhancedCustomShapeFunctionParser.hxx b/include/svx/EnhancedCustomShapeFunctionParser.hxx
new file mode 100644
index 0000000000..28d2491c77
--- /dev/null
+++ b/include/svx/EnhancedCustomShapeFunctionParser.hxx
@@ -0,0 +1,249 @@
+/* -*- 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 <string_view>
+#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( std::u16string_view 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: */