polybar-dwm/include/drawtypes/ramp.hpp
2016-10-25 07:10:05 +02:00

76 lines
1.7 KiB
C++

#pragma once
#include "common.hpp"
#include "components/config.hpp"
#include "drawtypes/label.hpp"
#include "utils/math.hpp"
#include "utils/mixins.hpp"
LEMONBUDDY_NS
namespace drawtypes {
class ramp : public non_copyable_mixin<ramp> {
public:
explicit ramp() = default;
explicit ramp(vector<icon_t>&& icons) : m_icons(forward<decltype(icons)>(icons)) {}
void add(icon_t&& icon) {
m_icons.emplace_back(forward<decltype(icon)>(icon));
}
icon_t get(size_t index) {
return m_icons[index];
}
icon_t get_by_percentage(float percentage) {
size_t index = percentage * (m_icons.size() - 1) / 100.0f + 0.5f;
return m_icons[math_util::cap<size_t>(index, 0, m_icons.size() - 1)];
}
operator bool() {
return !m_icons.empty();
}
protected:
vector<icon_t> m_icons;
};
using ramp_t = shared_ptr<ramp>;
/**
* Create a ramp by loading values
* from the configuration
*/
inline auto load_ramp(const config& conf, string section, string name, bool required = true) {
name = string_util::ltrim(string_util::rtrim(name, '>'), '<');
icon_t ramp_defaults;
try {
ramp_defaults = load_icon(conf, section, name);
} catch (const key_error&) {
}
vector<icon_t> vec;
vector<string> icons;
if (required)
icons = conf.get_list<string>(section, name);
else
icons = conf.get_list<string>(section, name, {});
for (size_t i = 0; i < icons.size(); i++) {
auto icon = load_optional_icon(conf, section, name + "-" + to_string(i), icons[i]);
if (ramp_defaults)
icon->copy_undefined(ramp_defaults);
vec.emplace_back(move(icon));
}
return ramp_t{new ramp_t::element_type(move(vec))};
}
}
LEMONBUDDY_NS_END