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// Copyright (C) 2000-2003, Luca Padovani <luca.padovani@cs.unibo.it>.
//
// This file is part of GtkMathView, a Gtk widget for MathML.
//
// GtkMathView is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// GtkMathView 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with GtkMathView; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
// For details, see the GtkMathView World-Wide-Web page,
// http://helm.cs.unibo.it/mml-widget, or send a mail to
// <luca.padovani@cs.unibo.it>
#include <config.h>
#include <cassert>
#include "defs.h"
#include "String.hh"
#include "ValueConversion.hh"
typedef Variant<void> Variant_void;
bool
IsEmpty(const SmartPtr<Value>& value)
{
assert(value);
return is_a<const Variant_void>(value);
}
bool
IsTokenId(const SmartPtr<Value>& value)
{
assert(value);
return is_a< Variant<TokenId> >(value);
}
bool
IsSequence(const SmartPtr<Value>& value)
{
assert(value);
return is_a< Variant< std::vector< SmartPtr<Value> > > >(value);
}
bool
IsLength(const SmartPtr<Value>& value)
{
assert(value);
return is_a< Variant<Length> >(value);
}
bool
IsRGBColor(const SmartPtr<Value>& value)
{
assert(value);
return is_a< Variant<RGBColor> >(value);
}
bool
IsNumber(const SmartPtr<Value>& value)
{
assert(value);
return is_a< Variant<float> >(value);
}
bool
ToBoolean(const SmartPtr<Value>& value)
{
if (SmartPtr< Variant<bool> > v = smart_cast< Variant<bool> >(value))
return v->getValue();
assert(false);
return bool();
}
float
ToNumber(const SmartPtr<Value>& value)
{
if (SmartPtr< Variant<float> > v = smart_cast< Variant<float> >(value))
return v->getValue();
assert(false);
return float();
}
int
ToInteger(const SmartPtr<Value>& value)
{
if (SmartPtr< Variant<int> > v = smart_cast< Variant<int> >(value))
return v->getValue();
assert(false);
return int();
}
String
ToString(const SmartPtr<Value>& value)
{
if (SmartPtr< Variant<String> > v = smart_cast< Variant<String> >(value))
return v->getValue();
assert(false);
return String();
}
Length
ToLength(const SmartPtr<Value>& value)
{
if (SmartPtr< Variant<Length> > v = smart_cast< Variant<Length> >(value))
return v->getValue();
assert(false);
return Length();
}
RGBColor
ToRGBColor(const SmartPtr<Value>& value)
{
if (SmartPtr< Variant<RGBColor> > v = smart_cast< Variant<RGBColor> >(value))
return v->getValue();
assert(false);
return RGBColor();
}
TokenId
ToTokenId(const SmartPtr<Value>& value)
{
assert(value);
if (SmartPtr< Variant<TokenId> > v = smart_cast< Variant<TokenId> >(value))
return v->getValue();
else
return T__NOTVALID;
}
SmartPtr<ValueSequence>
ToSequence(const SmartPtr<Value>& value)
{ return smart_cast<ValueSequence>(value); }
Length::Unit
toUnitId(TokenId id)
{
switch (id)
{
case T__PERCENTAGE: return Length::PERCENTAGE_UNIT;
case T_EM: return Length::EM_UNIT;
case T_EX: return Length::EX_UNIT;
case T_PX: return Length::PX_UNIT;
case T_IN: return Length::IN_UNIT;
case T_CM: return Length::CM_UNIT;
case T_MM: return Length::MM_UNIT;
case T_PT: return Length::PT_UNIT;
case T_PC: return Length::PC_UNIT;
default: return Length::UNDEFINED_UNIT;
}
}
Length::Unit
toUnitId(const SmartPtr<Value>& value)
{
return toUnitId(ToTokenId(value));
}
RGBColor
ToRGB(const SmartPtr<Value>& value)
{
if (IsRGBColor(value))
return ToRGBColor(value);
switch (ToTokenId(value))
{
case T_BLACK: return RGBColor::BLACK();
case T_SILVER: return RGBColor::SILVER();
case T_GRAY: return RGBColor::GRAY();
case T_WHITE: return RGBColor::WHITE();
case T_MAROON: return RGBColor::MAROON();
case T_RED: return RGBColor::RED();
case T_PURPLE: return RGBColor::PURPLE();
case T_FUCHSIA: return RGBColor::FUCHSIA();
case T_GREEN: return RGBColor::GREEN();
case T_LIME: return RGBColor::LIME();
case T_OLIVE: return RGBColor::OLIVE();
case T_YELLOW: return RGBColor::YELLOW();
case T_NAVY: return RGBColor::NAVY();
case T_BLUE: return RGBColor::BLUE();
case T_TEAL: return RGBColor::TEAL();
case T_AQUA: return RGBColor::AQUA();
default:
assert(false);
return RGBColor::BLACK();
}
}
SmartPtr<Value>
GetComponent(const SmartPtr<Value>& value, int i, int j)
{
if (value)
if (i < 0)
return value;
else
{
SmartPtr<ValueSequence> vSeq = smart_cast<ValueSequence>(value);
assert(vSeq);
assert(vSeq->getSize() > 0);
return GetComponent(vSeq->getValue(std::min(i, static_cast<int>(vSeq->getSize() - 1))), j, -1);
}
else
return 0;
}
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