theme_editor.hpp

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#pragma once
 
#include <pulp/view/view.hpp>
#include <pulp/view/color_picker.hpp>
#include <functional>
 
namespace pulp::view {

class ThemeEditor : public View {
public:
    ThemeEditor();

    void set_theme(Theme theme) {
        editing_theme_ = std::move(theme);
        build_swatches();
    }

    const Theme& editing_theme() const { return editing_theme_; }

    std::function<void(const std::string& token, Color new_color)> on_color_changed;

    std::function<void(const Theme& theme)> on_export;

    std::string export_json() const { return editing_theme_.to_json(); }

    std::vector<std::string> token_names() const {
        std::vector<std::string> names;
        names.reserve(editing_theme_.colors.size());
        for (auto& [k, _] : editing_theme_.colors)
            names.push_back(k);
        return names;
    }

    void select_token(const std::string& name) {
        selected_token_ = name;
        auto it = editing_theme_.colors.find(name);
        if (it != editing_theme_.colors.end()) {
            picker_color_ = it->second;
        }
    }
 
    const std::string& selected_token() const { return selected_token_; }
 
protected:
    void paint(canvas::Canvas& canvas) override;
 
private:
    void build_swatches();
 
    Theme editing_theme_;
    std::string selected_token_;
    Color picker_color_;
    float swatch_size_ = 24.0f;
    float swatch_gap_ = 4.0f;
};
 
} // namespace pulp::view