BLT-Graphics/include/blt/app.h

84 lines
3.0 KiB
C++

#pragma once
#include <fstream>
#include "traits.h"
#include <utility>
#include <vector>
#include "blt/std/logging.h"
#include "status.h"
#include "error_logging.h"
#include <variant>
namespace blt::graphics {
enum class properties_t : int {
// The display window's title
WINDOW_TITLE,
// the initial display width/height. This value does not change if the window is resized. Use Window::getWidth and Window::getHeight
WINDOW_WIDTH,
WINDOW_HEIGHT,
WINDOW_RESIZABLE,
RENDER_MODE, // INT
};
class Settings {
public:
typedef std::variant<int32_t, int64_t, float, bool, std::string> property_t;
Settings() = default;
Settings(std::initializer_list<std::pair<properties_t, property_t>> default_properties){
for (const auto& v : default_properties)
setProperty(v.first, v.second);
}
~Settings() = default;
[[nodiscard]] inline const property_t* getProperty(properties_t property) const {
if (values.size() <= static_cast<int>(property))
return nullptr;
return &values[static_cast<int>(property)];
}
template<typename T>
[[nodiscard]] inline const T* getProperty(properties_t property) const {
if ((int)values.size() <= static_cast<int>(property))
return nullptr;
return &get<T>(values[static_cast<int>(property)]);
}
inline void setProperty(properties_t property, property_t value) {
if (values.capacity() <= static_cast<int>(property))
values.resize(static_cast<int>(property) * 2);
values[static_cast<int>(property)] = std::move(value);
}
bool save(std::ofstream& out);
bool load(std::ifstream& in);
private:
std::vector<property_t> values;
// handles saving of the variant's value
class property_saver {
private:
std::ofstream& out;
public:
explicit property_saver(std::ofstream& out): out(out){}
inline void operator()(int32_t i) {
out << i;
}
inline void operator()(int64_t l){
out << l;
out << "l";
}
inline void operator()(float f){
out << f;
out << "f";
}
inline void operator()(bool b){
out << b;
out << "b";
}
inline void operator()(const std::string& s) {
out << s;
}
};
};
}