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#include "../include/Tabs.hpp"
#include "../include/ResourceLoader.hpp"
#include "../include/Utils.hpp"
#include <SFML/Window/Event.hpp>
#include <SFML/Graphics/RenderWindow.hpp>
#include <SFML/OpenGL.hpp>
#include <cmath>
namespace QuickMedia {
static const float tab_text_size = std::floor(16.0f * QuickMedia::get_ui_scale());
static const float tab_height = tab_text_size + std::floor(10.0f * QuickMedia::get_ui_scale());
static const sf::Color tab_selected_color(55, 60, 68);
static const sf::Color arrow_color(255, 255, 255, 175);
static const float tab_min_width = 250.0f;
static const float tab_margin_x = 10.0f;
// static
float Tabs::get_height() {
return tab_height;
}
// static
float Tabs::get_shade_height() {
return tab_height + std::floor(10.0f * get_ui_scale());
}
Tabs::Tabs(sf::Color shade_color) : background(sf::Vector2f(1.0f, 1.0f), 10.0f, 10), shade_color(shade_color) {
background.setFillColor(tab_selected_color);
shade.setFillColor(shade_color);
}
int Tabs::add_tab(const std::string &title) {
tab_texts.push_back(sf::Text(title, *FontLoader::get_font(FontLoader::FontType::LATIN), tab_text_size));
return tab_texts.size() - 1;
}
void Tabs::on_event(sf::Event &event) {
if(event.type == sf::Event::KeyPressed) {
if(event.key.code == sf::Keyboard::Left || (event.key.control && event.key.code == sf::Keyboard::H)) {
if(selected_tab > 0) {
--selected_tab;
float scroll_fixed = scroll + (tab_offset * width_per_tab);
if(scroll_fixed + tab_index_to_x_offset(selected_tab) + tab_background_width < tab_margin_x)
tab_offset++;
if(on_change_tab)
on_change_tab(selected_tab);
}
} else if(event.key.code == sf::Keyboard::Right || (event.key.control && event.key.code == sf::Keyboard::L)) {
if(selected_tab < (int)tab_texts.size() - 1) {
++selected_tab;
float scroll_fixed = scroll + (tab_offset * width_per_tab);
if(scroll_fixed + tab_index_to_x_offset(selected_tab) + tab_background_width > container_width - tab_margin_x)
tab_offset--;
if(on_change_tab)
on_change_tab(selected_tab);
}
}
}
}
void Tabs::draw(sf::RenderWindow &window, sf::Vector2f pos, float width) {
if(width - tab_margin_x < 0.0f || tab_texts.empty()) return;
auto window_size = window.getSize();
container_width = width;
const int num_visible_tabs = std::min((int)tab_texts.size(), std::max(1, (int)(width / tab_min_width)));
width_per_tab = std::floor(width / num_visible_tabs);
const float tab_text_y = std::floor(pos.y + tab_height*0.5f - (tab_text_size + 5.0f*get_ui_scale())*0.5f);
tab_background_width = std::floor(width_per_tab - tab_margin_x*2.0f);
background.setSize(sf::Vector2f(tab_background_width, tab_height));
shade.setSize(sf::Vector2f(width, get_shade_height()));
shade.setPosition(std::floor(pos.x), std::floor(pos.y));
window.draw(shade);
float scroll_fixed = scroll + (tab_offset * width_per_tab);
float overflow_last = (scroll_fixed + tab_index_to_x_offset(tab_texts.size() - 1) + tab_background_width) - (width - tab_margin_x);
if(overflow_last < 0.0f)
scroll_fixed -= overflow_last;
float overflow = (scroll_fixed + tab_index_to_x_offset(selected_tab) + tab_background_width) - (width - tab_margin_x);
float underflow = scroll_fixed + tab_index_to_x_offset(selected_tab);
if(overflow > 0.0f)
scroll_fixed -= overflow;
else if(underflow < 0.0f)
scroll_fixed -= underflow;
bool tabs_cutoff_left = false;
bool tabs_cutoff_right = false;
const auto start_pos = pos;
pos.x += scroll_fixed;
for(size_t i = 0; i < tab_texts.size(); ++i) {
const int index = i;
const float background_pos_x = std::floor(pos.x + tab_index_to_x_offset(i));
if(background_pos_x - start_pos.x >= width - tab_margin_x) {
tabs_cutoff_right = true;
break;
} else if(background_pos_x + tab_background_width - start_pos.x <= tab_margin_x) {
tabs_cutoff_left = true;
continue;
}
if((int)index == selected_tab) {
background.setPosition(background_pos_x, std::floor(pos.y));
window.draw(background);
}
sf::Text &tab_text = tab_texts[index];
float text_pos_x = std::floor(pos.x + i*width_per_tab + width_per_tab*0.5f - tab_text.getLocalBounds().width*0.5f);
text_pos_x = std::max(text_pos_x, background_pos_x);
tab_text.setPosition(text_pos_x, tab_text_y);
glEnable(GL_SCISSOR_TEST);
glScissor(text_pos_x, (int)window_size.y - (int)tab_text_y - (int)tab_height, tab_background_width, tab_height);
window.draw(tab_text);
glDisable(GL_SCISSOR_TEST);
}
float lw = std::floor(25.0f * get_ui_scale());
float lh = background.getSize().y;
float line_offset_y = std::floor(lw * 0.35f);
if(tabs_cutoff_left) {
sf::Vertex gradient_points[4];
gradient_points[0].position = sf::Vector2f(start_pos.x + tab_margin_x, start_pos.y);
gradient_points[1].position = sf::Vector2f(start_pos.x + tab_margin_x + lw, start_pos.y);
gradient_points[2].position = sf::Vector2f(start_pos.x + tab_margin_x + lw, start_pos.y + lh);
gradient_points[3].position = sf::Vector2f(start_pos.x + tab_margin_x, start_pos.y + lh);
gradient_points[0].color = shade_color;
gradient_points[1].color = sf::Color(shade_color.r, shade_color.g, shade_color.b, 10);
gradient_points[2].color = sf::Color(shade_color.r, shade_color.g, shade_color.b, 10);
gradient_points[3].color = shade_color;
window.draw(gradient_points, 4, sf::Quads);
sf::RectangleShape line(sf::Vector2f(std::floor(10.0f * get_ui_scale()), std::floor(2.0f * get_ui_scale())));
line.setFillColor(arrow_color);
line.setOrigin(line.getSize().x * 0.5f, line.getSize().y * 0.5f);
line.rotate(-45.0f);
line.setPosition(std::floor(start_pos.x + line.getLocalBounds().width), std::floor(pos.y + background.getSize().y * 0.5f - lh * 0.5f + line_offset_y));
window.draw(line);
line.rotate(-90.0f);
line.setPosition(std::floor(start_pos.x + line.getLocalBounds().width), std::floor(pos.y + background.getSize().y * 0.5f - lh * 0.5f + line_offset_y + std::floor(7.0f * get_ui_scale())));
window.draw(line);
}
if(tabs_cutoff_right) {
sf::Vertex gradient_points[4];
gradient_points[0].position = sf::Vector2f(start_pos.x + width - lw - tab_margin_x, start_pos.y);
gradient_points[1].position = sf::Vector2f(start_pos.x + width, start_pos.y);
gradient_points[2].position = sf::Vector2f(start_pos.x + width, start_pos.y + lh);
gradient_points[3].position = sf::Vector2f(start_pos.x + width - lw - tab_margin_x, start_pos.y + lh);
gradient_points[0].color = sf::Color(shade_color.r, shade_color.g, shade_color.b, 10);
gradient_points[1].color = shade_color;
gradient_points[2].color = shade_color;
gradient_points[3].color = sf::Color(shade_color.r, shade_color.g, shade_color.b, 10);
window.draw(gradient_points, 4, sf::Quads);
sf::RectangleShape line(sf::Vector2f(std::floor(10.0f * get_ui_scale()), std::floor(2.0f * get_ui_scale())));
line.setFillColor(arrow_color);
line.setOrigin(line.getSize().x * 0.5f, line.getSize().y * 0.5f);
line.rotate(45.0f);
line.setPosition(std::floor(start_pos.x + width - lw*0.75f + line.getLocalBounds().width), std::floor(pos.y + background.getSize().y * 0.5f - lh * 0.5f + line_offset_y));
window.draw(line);
line.rotate(-90.0f);
line.setPosition(std::floor(start_pos.x + width - lw*0.75f + line.getLocalBounds().width), std::floor(pos.y + background.getSize().y * 0.5f - lh * 0.5f + line_offset_y + std::floor(7.0f * get_ui_scale())));
window.draw(line);
}
}
void Tabs::set_text(int index, const std::string &text) {
if(index < 0 || index >= (int)tab_texts.size()) return;
tab_texts[index].setString(sf::String::fromUtf8(text.begin(), text.end()));
}
void Tabs::set_selected(int index) {
if(tab_texts.empty()) {
selected_tab = 0;
} else {
selected_tab = std::min(std::max(index, 0), (int)tab_texts.size() - 1);
}
}
int Tabs::get_selected() const {
return selected_tab;
}
float Tabs::tab_index_to_x_offset(int index) {
return std::floor(index*width_per_tab + tab_margin_x);
}
}
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