css_length.cpp

#include "html.h"
#include "css_length.h"
 
void litehtml::css_length::fromString( const tstring& str, const tstring& predefs, int defValue )
{
        // TODO: Make support for calc
        if(str.substr(0, 4) == _t("calc"))
        {
                m_is_predefined = true;
                m_predef                = 0;
                return;
        }
 
        int predef = value_index(str.c_str(), predefs.c_str(), -1);
        if(predef >= 0)
        {
                m_is_predefined = true;
                m_predef                = predef;
        } else
        {
                m_is_predefined = false;
 
                tstring num;
                tstring un;
                bool is_unit = false;
                for(tstring::const_iterator chr = str.begin(); chr != str.end(); chr++)
                {
                        if(!is_unit)
                        {
                                if(t_isdigit(*chr) || *chr == _t('.') || *chr == _t('+') || *chr == _t('-'))
                                {
                                        num += *chr;
                                } else
                                {
                                        is_unit = true;
                                }
                        }
                        if(is_unit)
                        {
                                un += *chr;
                        }
                }
                if(!num.empty())
                {
                        m_value = (float) t_strtod(num.c_str(), 0);
                        m_units = (css_units) value_index(un.c_str(), css_units_strings, css_units_none);
                } else
                {
                        // not a number so it is predefined
                        m_is_predefined = true;
                        m_predef = defValue;
                }
        }
}