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#include "../../include/gui/Entry.hpp"
#include "../../include/gui/Utils.hpp"
#include "../../include/Theme.hpp"
#include <mglpp/graphics/Rectangle.hpp>
#include <mglpp/window/Window.hpp>
#include <mglpp/window/Event.hpp>
#include <mglpp/system/FloatRect.hpp>
#include <mglpp/system/Utf8.hpp>
#include <optional>
namespace gsr {
static const float padding_top = 10.0f;
static const float padding_bottom = 10.0f;
static const float padding_left = 10.0f;
static const float padding_right = 10.0f;
Entry::Entry(mgl::Font *font, const char *text, float max_width) : text("", *font), max_width(max_width) {
this->text.set_color(get_theme().text_color);
set_string(text);
}
bool Entry::on_event(mgl::Event &event, mgl::Window&, mgl::vec2f offset) {
if(event.type == mgl::Event::MouseButtonPressed) {
selected = mgl::FloatRect(position + offset, get_size()).contains({ (float)event.mouse_button.x, (float)event.mouse_button.y });
} else if(event.type == mgl::Event::KeyPressed && selected) {
if(event.key.code == mgl::Keyboard::Backspace && !text.get_string().empty()) {
std::string str = text.get_string();
const size_t prev_index = mgl::utf8_get_start_of_codepoint((const unsigned char*)str.c_str(), str.size(), str.size());
str.erase(prev_index, std::string::npos);
set_string(std::move(str));
}
} else if(event.type == mgl::Event::TextEntered && selected && event.text.codepoint >= 32) {
std::string str = text.get_string();
str.append(event.text.str, event.text.size);
set_string(std::move(str));
}
return true;
}
void Entry::draw(mgl::Window &window, mgl::vec2f offset) {
const mgl::vec2f draw_pos = position + offset;
mgl::Rectangle background(get_size());
background.set_position(draw_pos.floor());
background.set_color(selected ? mgl::Color(0, 0, 0, 255) : mgl::Color(0, 0, 0, 120));
window.draw(background);
if(selected) {
const int border_size = 3;
draw_rectangle_outline(window, draw_pos.floor(), get_size().floor(), get_theme().tint_color, border_size);
const int caret_width = 2;
mgl::Rectangle caret({caret_width, text.get_bounds().size.y});
caret.set_position((draw_pos + mgl::vec2f(padding_left + caret_offset_x, padding_top)).floor());
caret.set_color(mgl::Color(255, 255, 255));
window.draw(caret);
}
text.set_position((draw_pos + mgl::vec2f(padding_left, get_size().y * 0.5f - text.get_bounds().size.y * 0.5f)).floor());
window.draw(text);
}
mgl::vec2f Entry::get_size() {
return { max_width, text.get_bounds().size.y + padding_top + padding_bottom };
}
void Entry::set_string(std::string str) {
if(!validate_handler || validate_handler(str)) {
text.set_string(std::move(str));
caret_offset_x = text.find_character_pos(99999).x - this->text.get_position().x;
fprintf(stderr, "caret offset: %f\n", caret_offset_x);
}
}
static bool is_number(uint8_t c) {
return c >= '0' && c <= '9';
}
static std::optional<int> to_integer(const std::string &str) {
if(str.empty())
return std::nullopt;
size_t i = 0;
const bool negative = str[0] == '-';
if(negative)
i = 1;
int number = 0;
for(; i < str.size(); ++i) {
if(!is_number(str[i]))
return false;
const int new_number = number * 10 + (str[i] - '0');
if(new_number < number)
return std::nullopt; // Overflow
number = new_number;
}
if(negative)
number = -number;
return number;
}
EntryValidateHandler create_entry_validator_integer_in_range(int min, int max) {
return [min, max](std::string &str) {
if(str.empty())
return true;
std::optional<int> number = to_integer(str);
if(!number)
return false;
if(number.value() < min)
str = std::to_string(min);
else if(number.value() > max)
str = std::to_string(max);
return true;
};
}
}
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