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#include "html.h"
#include "css_length.h"
namespace litehtml
{
bool css_length::from_token(const css_token& token, int options, const string& keywords)
{
if ((options & f_positive) && is_one_of(token.type, NUMBER, DIMENSION, PERCENTAGE) && token.n.number < 0)
return false;
if (token.type == IDENT)
{
int idx = value_index(lowcase(token.name), keywords);
if (idx == -1) return false;
m_predef = idx;
m_is_predefined = true;
return true;
}
else if (token.type == DIMENSION)
{
if (!(options & f_length)) return false;
int idx = value_index(lowcase(token.unit), css_units_strings);
// note: 1none and 1\% are invalid
if (idx == -1 || idx == css_units_none || idx == css_units_percentage)
return false;
m_value = token.n.number;
m_units = (css_units)idx;
m_is_predefined = false;
return true;
}
else if (token.type == PERCENTAGE)
{
if (!(options & f_percentage)) return false;
m_value = token.n.number;
m_units = css_units_percentage;
m_is_predefined = false;
return true;
}
else if (token.type == NUMBER)
{
// if token is a nonzero number and neither f_number nor f_integer is specified in the options
if (!(options & (f_number | f_integer)) && token.n.number != 0)
return false;
// if token is a zero number and neither of f_number, f_integer or f_length are specified in the options
if (!(options & (f_number | f_integer | f_length)) && token.n.number == 0)
return false;
if ((options & f_integer) && token.n.number_type != css_number_integer)
return false;
m_value = token.n.number;
m_units = css_units_none;
m_is_predefined = false;
return true;
}
return false;
}
string css_length::to_string() const
{
if(m_is_predefined)
{
return "def(" + std::to_string(m_predef) + ")";
}
return std::to_string(m_value) + "{" + index_value(m_units, css_units_strings) + "}";
}
css_length css_length::predef_value(int val)
{
css_length len;
len.predef(val);
return len;
}
} // namespace litehtml
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