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#include <mbgl/util/color.hpp>
#include <mbgl/util/string.hpp>
#include <csscolorparser/csscolorparser.hpp>
namespace mbgl {
optional<Color> Color::parse(const std::string& s) {
auto css_color = CSSColorParser::parse(s);
// Premultiply the color.
if (css_color) {
const float factor = css_color->a / 255;
return {{
css_color->r * factor,
css_color->g * factor,
css_color->b * factor,
css_color->a
}};
} else {
return {};
}
}
std::string Color::stringify() const {
std::array<double, 4> array = toArray();
return "rgba(" +
util::toString(array[0]) + "," +
util::toString(array[1]) + "," +
util::toString(array[2]) + "," +
util::toString(array[3]) + ")";
}
std::array<double, 4> Color::toArray() const {
if (a == 0) {
return {{ 0, 0, 0, 0 }};
} else {
return {{
r * 255 / a,
g * 255 / a,
b * 255 / a,
a,
}};
}
}
} // namespace mbgl
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