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path: root/src/Entry.cpp
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#include "../include/Entry.hpp"
#include <SFML/Graphics/RenderWindow.hpp>
#include <SFML/Graphics/RectangleShape.hpp>
#include <SFML/Window/Event.hpp>
#include <cmath>

const float background_margin_horizontal = 5.0f;
const float padding_vertical = 3.0f;
const float background_margin_vertical = 0.0f;

namespace QuickMedia {
    Entry::Entry(const std::string &placeholder_text, sf::Font *font, sf::Font *cjk_font) :
        on_submit_callback(nullptr),
        draw_background(true),
        text("", font, cjk_font, 16, 0.0f),
        width(0.0f),
        background(sf::Vector2f(1.0f, 1.0f), 7.0f, 10),
        placeholder(placeholder_text, *font, 16)
    {
        text.setEditable(true);
        background.setFillColor(sf::Color(55, 60, 68));
        placeholder.setFillColor(sf::Color(255, 255, 255, 100));
    }

    void Entry::process_event(sf::Event &event) {
        text.processEvent(event);
        if(event.type == sf::Event::KeyPressed && event.key.code == sf::Keyboard::Enter && !event.key.shift) {
            if(on_submit_callback) {
                auto u8 = text.getString().toUtf8();
                std::string *u8_str = (std::string*)&u8;
                bool clear_text = on_submit_callback(*u8_str);
                if(clear_text)
                    text.setString("");
            }
        }
    }

    // TODO: Set the max number of visible lines and use glScissor to cut off the lines outsides
    // (and also split text into lines to not draw them at all once they are not inside the scissor box)
    void Entry::draw(sf::RenderWindow &window) {
        background.setSize(sf::Vector2f(width, get_height()));
        if(draw_background)
            window.draw(background);
        if(text.getString().isEmpty() && !text.isEditable()) {
            window.draw(placeholder);
            //sf::Vector2f placeholder_pos = placeholder.getPosition();
            //const float caret_margin = 2.0f;
            //const float vspace = placeholder.getFont()->getLineSpacing(18);
            //sf::RectangleShape caret_rect(sf::Vector2f(2.0f, floor(vspace - caret_margin * 2.0f)));
            //caret_rect.setPosition(floor(placeholder_pos.x), floor(placeholder_pos.y + caret_margin));
            //window.draw(caret_rect);
        } else {
            text.draw(window);
        }
    }

    void Entry::set_editable(bool editable) {
        text.setEditable(editable);
    }

    void Entry::set_text(std::string new_text) {
        text.setString(std::move(new_text));
    }

    void Entry::move_caret_to_end() {
        text.updateGeometry();
        text.moveCaretToEnd();
    }

    void Entry::append_text(std::string str) {
        text.appendText(std::move(str));
    }

    void Entry::set_position(const sf::Vector2f &pos) {
        background.setPosition(pos);
        text.setPosition(pos + sf::Vector2f(background_margin_horizontal, background_margin_vertical - 3.0f));
        placeholder.setPosition(pos + sf::Vector2f(background_margin_horizontal, background_margin_vertical + 3.0f));
    }

    void Entry::set_max_width(float width) {
        this->width = width;
        text.setMaxWidth(this->width - background_margin_horizontal * 2.0f);
    }

    float Entry::get_height() {
        text.updateGeometry();
        return std::floor(text.getHeight() + background_margin_vertical * 2.0f + padding_vertical *2.0f);
    }
}