root/libcore/swf/DefineFontAlignZonesTag.cpp

DEFINITIONS

1. loader

// DefineFontAlignZonesTag.cpp:  for Gnash.
//
//   Copyright (C) 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
//
// This program 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 3 of the License, or
// (at your option) any later version.
//
// This program 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 this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
//

#include "DefineFontAlignZonesTag.h"

#include <boost/cstdint.hpp>

#include "RunResources.h"
#include "Font.h"
#include "log.h"
#include "SWFStream.h"
#include "movie_definition.h"
#include "smart_ptr.h"

namespace gnash {
namespace SWF {

DefineFontAlignZonesTag::DefineFontAlignZonesTag(movie_definition& /*m*/,
        SWFStream& /*in*/)
    :
    _csm_table_int(2)
{
}

void
DefineFontAlignZonesTag::loader(SWFStream& in, TagType tag,
        movie_definition& m, const RunResources& /*r*/)
{
        assert(tag == SWF::DEFINEALIGNZONES);

        in.ensureBytes(2);

    // must reference a valid DEFINEFONT3 tag
    const boost::uint16_t ref = in.read_u16(); 
        Font* referencedFont = m.get_font(ref);
        if (!referencedFont) {
                IF_VERBOSE_MALFORMED_SWF(
                log_swferror(_("DefineFontAlignZones tag references an undefined "
               "font %d"), ref);
                );
                in.skip_to_tag_end();
                return;
        }

        in.ensureBytes(1);
    // 2bits are cms table, 6bits are reserved
        const boost::uint8_t flags = in.read_u8();

    // What is this?
        const boost::uint16_t csm_table_int = flags >> 6;

        // TODO:
    // The first thing to to is test what this does. According to some
    // sources, the tag is ignored and merely turns on the player's
    // font engine.
        IF_VERBOSE_PARSE (
        log_parse(_("DefineFontAlignZones: font=%d, flags=%d, "
                "table int: %s"), ref, flags, csm_table_int);
        );

        const Font::GlyphInfoRecords::size_type glyphs_count =
        referencedFont->glyphCount();

        for (size_t i = 0; i != glyphs_count; ++i) {

        in.ensureBytes(1);
        
        // What is this for?
        in.read_u8();           
        
        for (size_t j = 0; j != 2; ++j) {
            in.ensureBytes(4);
            const boost::uint16_t zone_position = in.read_u16();
            const boost::uint16_t zone_size = in.read_u16();

            IF_VERBOSE_PARSE(
                log_parse("Zone position: %s, size: %s", zone_position,
                    zone_size);
            );
        }               
        
        in.ensureBytes(1);
        // What is this?
        const boost::uint8_t u = in.read_u8();
        const bool zone_x = u & 0x01;
        const bool zone_y = (u >> 1) & 0x01;

        IF_VERBOSE_PARSE(
            log_parse("Zone x: %s, y: %s", zone_x, zone_y);
        );
                        
    }
        in.skip_to_tag_end();
        LOG_ONCE(log_unimpl(_("DefineFontAlignZoneTag")));

}


} // namespace gnash::SWF
} // namespace gnash

// Local Variables:
// mode: C++
// indent-tabs-mode: t
// End