looper/backends/ui/imgui/theme.h

#pragma once
#include "config.h"
#include "imgui/imgui.h"
#include <set>
#include <map>
#include <string>
#include "file_browser.h"
#include <json/json.h>
#include <filesystem>
#include "thirdparty/toml.hpp"
using std::string;
using namespace std::filesystem;

struct ThemeStrings {
    string name;
    string description;
    ThemeStrings();
    ThemeStrings(toml::table config);
};

struct AccentColorizer {
    /// @brief Whether or not to change the hue.
    bool Hue;
    /// @brief Whether or not to change the saturation.
    bool Saturation;
    /// @brief Whether or not to change the value.
    bool Value;
    /// @brief Whether or not to multiply the alpha.
    bool Alpha;
    /// @brief Colorizes a color stored as an ImVec4 according to preferences.
    void Colorize(ImVec4 accent, ImVec4 &color);
    /// @brief Serialize the settings to json.
    /// @returns The serialized TOML, as a toml::table.
    toml::table Serialize();
    /// @brief Create a default accent colorizer
    AccentColorizer();
    /// @brief Deserialize the settings from TOML and construct.
    /// @param table The TOML to deserialize from.
    AccentColorizer(toml::table table);
};

class Theme {
    ImGuiStyle style;

    static std::string Migrate(string path);
    public:
    static std::set<path> availableThemes;
    static std::map<path, ThemeStrings> themeStrings;
    static void updateAvailableThemes();
    static path themeDir;
    static const char* prefPath;
    static const int MinSchemaVersion = 0;
    static const int MaxSchemaVersion = 1;
    string file_path;
    std::map<string, ThemeStrings> strings;
    std::map<int, AccentColorizer> AccentColorizers;
    ThemeStrings GetStrings();
    static bool ShowEditor(bool *open, Theme* &theme, ImGuiID dockid, int window_width, int window_height);
    void Apply(ImVec4 accent);
    void Save(string path);
    void Save(path path);
    Theme();
    Theme(bool dark);
    Theme(string path);
    Theme(path path);
};