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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* OpenOffice.org - a multi-platform office productivity suite
*
* Author:
* Jan Holesovsky <kendy@suse.cz>
* Fridrich Strba <fridrich.strba@bluewin.ch>
* Thorsten Behrens <tbehrens@novell.com>
*
* Copyright (C) 2008, Novell Inc.
*
* The Contents of this file are made available subject to
* the terms of GNU Lesser General Public License Version 3.
*
************************************************************************/
// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_filter.hxx"
#include "units.hxx"
#include "gfxtypes.hxx"
#include "spirit_supplements.hxx"
#include <string.h>
#include <rtl/ustring.hxx>
#include <boost/bind.hpp>
// workaround. spirit uses INT_MAX.
#include <limits.h>
#include <boost/spirit.hpp>
namespace svgi
{
double convLength( double value, SvgUnit unit, const State& rState, char dir )
{
// convert svg unit to internal coordinates ("pixel"). Since the
// OOo drawing layer is still largely integer-based, the initial
// viewport transformation includes a certain scale factor
double fRet(value);
switch ( unit )
{
case SVG_LENGTH_UNIT_CM: fRet *= 72.0/2.54; break;
case SVG_LENGTH_UNIT_IN: fRet *= 72.0; break;
case SVG_LENGTH_UNIT_MM: fRet *= 72.0/25.4; break;
case SVG_LENGTH_UNIT_PC: fRet *= 72.0/6.0; break;
case SVG_LENGTH_UNIT_USER:
case SVG_LENGTH_UNIT_PX: // no unit defaults to PX in svg,
// assume display to have 72DPI
case SVG_LENGTH_UNIT_PT: break;
case SVG_LENGTH_UNIT_EM: fRet *= rState.mnFontSize; break;
case SVG_LENGTH_UNIT_EX: fRet *= rState.mnFontSize / 2.0; break;
case SVG_LENGTH_UNIT_PERCENTAGE:
{
double fBoxLen;
if (rState.maViewBox.isEmpty())
{
basegfx::B2DRange aDefaultBox(0, 0,
convLength(210, SVG_LENGTH_UNIT_MM, rState, 'h'),
convLength(297, SVG_LENGTH_UNIT_MM, rState, 'v'));
fBoxLen = (dir=='h' ? aDefaultBox.getWidth() :
(dir=='v' ? aDefaultBox.getHeight() :
aDefaultBox.getRange().getLength()));
}
else
{
fBoxLen = (dir=='h' ? rState.maViewBox.getWidth() :
(dir=='v' ? rState.maViewBox.getHeight() :
rState.maViewBox.getRange().getLength()));
}
fRet *= fBoxLen/100.0;
}
break;
default: OSL_TRACE( "Unknown length type" ); break;
}
return fRet;
}
double convLength( const rtl::OUString& sValue, const State& rState, char dir )
{
using namespace ::boost::spirit;
rtl::OString aUTF8 = rtl::OUStringToOString( sValue,
RTL_TEXTENCODING_UTF8 );
double nVal=0.0;
SvgUnit eUnit=SVG_LENGTH_UNIT_PX;
const bool bRes = parse(aUTF8.getStr(),
// Begin grammar
(
real_p[assign_a(nVal)]
>> ( str_p("cm") [assign_a(eUnit,SVG_LENGTH_UNIT_CM)]
| str_p("em") [assign_a(eUnit,SVG_LENGTH_UNIT_EM)]
| str_p("ex") [assign_a(eUnit,SVG_LENGTH_UNIT_EX)]
| str_p("in") [assign_a(eUnit,SVG_LENGTH_UNIT_IN)]
| str_p("mm") [assign_a(eUnit,SVG_LENGTH_UNIT_MM)]
| str_p("pc") [assign_a(eUnit,SVG_LENGTH_UNIT_PC)]
| str_p("pt") [assign_a(eUnit,SVG_LENGTH_UNIT_PT)]
| str_p("px") [assign_a(eUnit,SVG_LENGTH_UNIT_PX)]
| str_p("%") [assign_a(eUnit,SVG_LENGTH_UNIT_PERCENTAGE)]
| str_p("") [assign_a(eUnit,SVG_LENGTH_UNIT_USER)]
| end_p)
),
// End grammar
space_p).full;
if( !bRes )
return 0.0;
return convLength(nVal,eUnit,rState,dir);
}
} // namespace svgi
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
