1*cdf0e10cSrcweir /************************************************************************* 2*cdf0e10cSrcweir * 3*cdf0e10cSrcweir * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4*cdf0e10cSrcweir * 5*cdf0e10cSrcweir * Copyright 2000, 2010 Oracle and/or its affiliates. 6*cdf0e10cSrcweir * 7*cdf0e10cSrcweir * OpenOffice.org - a multi-platform office productivity suite 8*cdf0e10cSrcweir * 9*cdf0e10cSrcweir * This file is part of OpenOffice.org. 10*cdf0e10cSrcweir * 11*cdf0e10cSrcweir * OpenOffice.org is free software: you can redistribute it and/or modify 12*cdf0e10cSrcweir * it under the terms of the GNU Lesser General Public License version 3 13*cdf0e10cSrcweir * only, as published by the Free Software Foundation. 14*cdf0e10cSrcweir * 15*cdf0e10cSrcweir * OpenOffice.org is distributed in the hope that it will be useful, 16*cdf0e10cSrcweir * but WITHOUT ANY WARRANTY; without even the implied warranty of 17*cdf0e10cSrcweir * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18*cdf0e10cSrcweir * GNU Lesser General Public License version 3 for more details 19*cdf0e10cSrcweir * (a copy is included in the LICENSE file that accompanied this code). 20*cdf0e10cSrcweir * 21*cdf0e10cSrcweir * You should have received a copy of the GNU Lesser General Public License 22*cdf0e10cSrcweir * version 3 along with OpenOffice.org. If not, see 23*cdf0e10cSrcweir * <http://www.openoffice.org/license.html> 24*cdf0e10cSrcweir * for a copy of the LGPLv3 License. 25*cdf0e10cSrcweir * 26*cdf0e10cSrcweir ************************************************************************/ 27*cdf0e10cSrcweir 28*cdf0e10cSrcweir #ifndef INCLUDED_SLIDESHOW_SMILFUNCTIONPARSER_HXX 29*cdf0e10cSrcweir #define INCLUDED_SLIDESHOW_SMILFUNCTIONPARSER_HXX 30*cdf0e10cSrcweir 31*cdf0e10cSrcweir #include "expressionnode.hxx" 32*cdf0e10cSrcweir #include "slideshowexceptions.hxx" 33*cdf0e10cSrcweir 34*cdf0e10cSrcweir #include <basegfx/range/b2drectangle.hxx> 35*cdf0e10cSrcweir 36*cdf0e10cSrcweir #include <boost/noncopyable.hpp> 37*cdf0e10cSrcweir 38*cdf0e10cSrcweir namespace rtl 39*cdf0e10cSrcweir { 40*cdf0e10cSrcweir class OUString; 41*cdf0e10cSrcweir } 42*cdf0e10cSrcweir 43*cdf0e10cSrcweir /* Definition of SmilFunctionParser class */ 44*cdf0e10cSrcweir 45*cdf0e10cSrcweir namespace slideshow 46*cdf0e10cSrcweir { 47*cdf0e10cSrcweir namespace internal 48*cdf0e10cSrcweir { 49*cdf0e10cSrcweir class SmilFunctionParser : private boost::noncopyable 50*cdf0e10cSrcweir { 51*cdf0e10cSrcweir public: 52*cdf0e10cSrcweir /** Parse a string containing a SMIL value. 53*cdf0e10cSrcweir 54*cdf0e10cSrcweir This method parses a string representing 55*cdf0e10cSrcweir a fixed value (i.e. a value that does not 56*cdf0e10cSrcweir change by time). Due to the dynamic view 57*cdf0e10cSrcweir capabilities of the presentation engine, 58*cdf0e10cSrcweir this value can sometimes only be determined 59*cdf0e10cSrcweir during runtime of the animation (because 60*cdf0e10cSrcweir e.g. mixed screen/view coordinates are 61*cdf0e10cSrcweir involved), and is thus still returned as an 62*cdf0e10cSrcweir ExpressionNode object. An example for 63*cdf0e10cSrcweir such a case is the "Width+1.0" string, which 64*cdf0e10cSrcweir contains the width of the shape in user 65*cdf0e10cSrcweir coordinate space, and the screen width 66*cdf0e10cSrcweir in device coordinate space. 67*cdf0e10cSrcweir 68*cdf0e10cSrcweir The following grammar is accepted by this method: 69*cdf0e10cSrcweir <code> 70*cdf0e10cSrcweir identifier = 'pi'|'e'|'X'|'Y'|'Width'|'Height' 71*cdf0e10cSrcweir 72*cdf0e10cSrcweir function = 'abs'|'sqrt'|'sin'|'cos'|'tan'|'atan'|'acos'|'asin'|'exp'|'log' 73*cdf0e10cSrcweir 74*cdf0e10cSrcweir basic_expression = 75*cdf0e10cSrcweir number | 76*cdf0e10cSrcweir identifier | 77*cdf0e10cSrcweir function '(' additive_expression ')' | 78*cdf0e10cSrcweir '(' additive_expression ')' 79*cdf0e10cSrcweir 80*cdf0e10cSrcweir unary_expression = 81*cdf0e10cSrcweir '-' basic_expression | 82*cdf0e10cSrcweir basic_expression 83*cdf0e10cSrcweir 84*cdf0e10cSrcweir multiplicative_expression = 85*cdf0e10cSrcweir unary_expression ( ( '*' unary_expression )* | 86*cdf0e10cSrcweir ( '/' unary_expression )* ) 87*cdf0e10cSrcweir 88*cdf0e10cSrcweir additive_expression = 89*cdf0e10cSrcweir multiplicative_expression ( ( '+' multiplicative_expression )* | 90*cdf0e10cSrcweir ( '-' multiplicative_expression )* ) 91*cdf0e10cSrcweir 92*cdf0e10cSrcweir </code> 93*cdf0e10cSrcweir 94*cdf0e10cSrcweir @param rSmilValue 95*cdf0e10cSrcweir The string to parse 96*cdf0e10cSrcweir 97*cdf0e10cSrcweir @param rRelativeShapeBounds 98*cdf0e10cSrcweir The bounds of the shape this SMIL value is to be 99*cdf0e10cSrcweir evaluated for. The bounds must be <em>relative</em> to 100*cdf0e10cSrcweir the page the shape is part of, i.e. within the [0,1] 101*cdf0e10cSrcweir range. This is necessary, since the string might 102*cdf0e10cSrcweir contain symbolic references to the shape bounding box. 103*cdf0e10cSrcweir 104*cdf0e10cSrcweir @throws ParseError if an invalid expression is given. 105*cdf0e10cSrcweir 106*cdf0e10cSrcweir @return the generated function object. 107*cdf0e10cSrcweir */ 108*cdf0e10cSrcweir static ExpressionNodeSharedPtr parseSmilValue( const ::rtl::OUString& rSmilValue, 109*cdf0e10cSrcweir const ::basegfx::B2DRectangle& rRelativeShapeBounds ); // throw ParseError 110*cdf0e10cSrcweir 111*cdf0e10cSrcweir /** Parse a string containing a SMIL function. 112*cdf0e10cSrcweir 113*cdf0e10cSrcweir This method parses a string representing 114*cdf0e10cSrcweir a possibly time-varying SMIL function. 115*cdf0e10cSrcweir 116*cdf0e10cSrcweir The following grammar is accepted by this method: 117*cdf0e10cSrcweir <code> 118*cdf0e10cSrcweir identifier = 't'|'pi'|'e'|'X'|'Y'|'Width'|'Height' 119*cdf0e10cSrcweir 120*cdf0e10cSrcweir function = 'abs'|'sqrt'|'sin'|'cos'|'tan'|'atan'|'acos'|'asin'|'exp'|'log' 121*cdf0e10cSrcweir 122*cdf0e10cSrcweir basic_expression = 123*cdf0e10cSrcweir number | 124*cdf0e10cSrcweir identifier | 125*cdf0e10cSrcweir function '(' additive_expression ')' | 126*cdf0e10cSrcweir '(' additive_expression ')' 127*cdf0e10cSrcweir 128*cdf0e10cSrcweir unary_expression = 129*cdf0e10cSrcweir '-' basic_expression | 130*cdf0e10cSrcweir basic_expression 131*cdf0e10cSrcweir 132*cdf0e10cSrcweir multiplicative_expression = 133*cdf0e10cSrcweir unary_expression ( ( '*' unary_expression )* | 134*cdf0e10cSrcweir ( '/' unary_expression )* ) 135*cdf0e10cSrcweir 136*cdf0e10cSrcweir additive_expression = 137*cdf0e10cSrcweir multiplicative_expression ( ( '+' multiplicative_expression )* | 138*cdf0e10cSrcweir ( '-' multiplicative_expression )* ) 139*cdf0e10cSrcweir 140*cdf0e10cSrcweir </code> 141*cdf0e10cSrcweir 142*cdf0e10cSrcweir @param rSmilFunction 143*cdf0e10cSrcweir The string to parse 144*cdf0e10cSrcweir 145*cdf0e10cSrcweir @param rRelativeShapeBounds 146*cdf0e10cSrcweir The bounds of the shape this SMIL value is to be 147*cdf0e10cSrcweir evaluated for. The bounds must be <em>relative</em> to 148*cdf0e10cSrcweir the page the shape is part of, i.e. within the [0,1] 149*cdf0e10cSrcweir range. This is necessary, since the string might 150*cdf0e10cSrcweir contain symbolic references to the shape bounding box. 151*cdf0e10cSrcweir 152*cdf0e10cSrcweir @throws ParseError if an invalid expression is given. 153*cdf0e10cSrcweir 154*cdf0e10cSrcweir @return the generated function object. 155*cdf0e10cSrcweir */ 156*cdf0e10cSrcweir static ExpressionNodeSharedPtr parseSmilFunction( const ::rtl::OUString& rSmilFunction, 157*cdf0e10cSrcweir const ::basegfx::B2DRectangle& rRelativeShapeBounds ); // throw ParseError 158*cdf0e10cSrcweir 159*cdf0e10cSrcweir private: 160*cdf0e10cSrcweir // disabled constructor/destructor, since this is 161*cdf0e10cSrcweir // supposed to be a singleton 162*cdf0e10cSrcweir SmilFunctionParser(); 163*cdf0e10cSrcweir }; 164*cdf0e10cSrcweir } 165*cdf0e10cSrcweir } 166*cdf0e10cSrcweir 167*cdf0e10cSrcweir #endif /* INCLUDED_SLIDESHOW_SMILFUNCTIONPARSER_HXX */ 168