本文整理汇总了C++中color::set_red方法的典型用法代码示例。如果您正苦于以下问题：C++ color::set_red方法的具体用法？C++ color::set_red怎么用？C++ color::set_red使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类color的用法示例。
在下文中一共展示了color::set_red方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: parse_from_string
bool color_factory::parse_from_string(color & c, std::string const& css_color,
mapnik::css_color_grammar<std::string::const_iterator> const& g)
{
std::string::const_iterator first = css_color.begin();
std::string::const_iterator last = css_color.end();
// boost 1.41 -> 1.44 compatibility, to be removed in mapnik 2.1 (dane)
#if BOOST_VERSION >= 104500
bool result =
boost::spirit::qi::phrase_parse(first,
last,
g,
boost::spirit::ascii::space,
c);
return result && (first == last);
#else
mapnik::css css_;
bool result =
boost::spirit::qi::phrase_parse(first,
last,
g,
boost::spirit::ascii::space,
css_);
if (result && (first == last))
{
c.set_red(css_.r);
c.set_green(css_.g);
c.set_blue(css_.b);
c.set_alpha(css_.a);
return true;
}
return false;
#endif
}示例2: init_from_string
void color_factory::init_from_string(color & c, std::string const& css_color)
{
typedef std::string::const_iterator iterator_type;
typedef mapnik::css_color_grammar<iterator_type> css_color_grammar;
css_color_grammar g;
iterator_type first = css_color.begin();
iterator_type last = css_color.end();
// boost 1.41 -> 1.44 compatibility, to be removed in mapnik 2.1 (dane)
#if BOOST_VERSION >= 104500
bool result =
boost::spirit::qi::phrase_parse(first,
last,
g,
boost::spirit::ascii::space,
c);
if (!result)
{
throw config_error(std::string("Failed to parse color value: ") +
"Expected a CSS color, but got '" + css_color + "'");
}
#else
mapnik::css css_;
bool result =
boost::spirit::qi::phrase_parse(first,
last,
g,
boost::spirit::ascii::space,
css_);
if (!result)
{
throw config_error(std::string("Failed to parse color value: ") +
"Expected a CSS color, but got '" + css_color + "'");
}
c.set_red(css_.r);
c.set_green(css_.g);
c.set_blue(css_.b);
c.set_alpha(css_.a);
#endif
}