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#include "../include/Tabs.hpp"
#include "../include/Body.hpp"
#include "../include/ResourceLoader.hpp"
#include "../include/Utils.hpp"
#include "../include/Config.hpp"
#include "../include/Theme.hpp"
#include "../include/Scale.hpp"
#include <mglpp/window/Event.hpp>
#include <mglpp/window/Window.hpp>
#include <mglpp/graphics/Texture.hpp>
namespace QuickMedia {
static float floor(float v) {
return (int)v;
}
static const float tab_text_size = floor(get_config().tab.font_size * get_config().scale * get_config().font_scale);
static const float tab_height = tab_text_size + floor(10.0f * get_config().scale * get_config().spacing_scale);
static const float tab_min_width = 250.0f;
static const float tab_margin_x = floor(10.0f * get_config().spacing_scale);
// static
float Tabs::get_height() {
return tab_height;
}
// static
float Tabs::get_shade_height() {
return tab_height + floor(10.0f * get_config().scale * get_config().spacing_scale);
}
Tabs::Tabs(mgl::Shader *rounded_rectangle_shader, mgl::Color shade_color) : background(mgl::vec2f(1.0f, 1.0f), 10.0f * get_config().scale, get_theme().selected_color, rounded_rectangle_shader), shade_color(shade_color) {
shade.set_color(shade_color);
arrow_sprite.set_texture(TextureLoader::get_texture("images/arrow.png"));
}
Tabs::Tabs(mgl::Shader *rounded_rectangle_shader) : Tabs(rounded_rectangle_shader, get_theme().shade_color) {}
int Tabs::add_tab(std::string title, Body *body) {
assert(body);
tabs.push_back({ mgl::Text(std::move(title), *FontLoader::get_font(FontLoader::FontType::LATIN, tab_text_size)), body} );
return tabs.size() - 1;
}
void Tabs::move_selected_tab(int new_tab) {
const int prev_tab = selected_tab;
const int tab_diff = new_tab - prev_tab;
if(tab_diff > 0) {
while(selected_tab < new_tab) {
++selected_tab;
const 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;
}
} else if(tab_diff < 0) {
while(selected_tab > new_tab) {
--selected_tab;
const 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;
}
} else {
return;
}
if(on_change_tab)
on_change_tab(prev_tab, selected_tab);
}
void Tabs::on_event(mgl::Event &event) {
if(event.type == mgl::Event::KeyPressed && event.key.control && !tabs.empty()) {
bool move_left = (event.key.code == mgl::Keyboard::Left || (event.key.alt && event.key.code == mgl::Keyboard::H));
move_left |= (event.key.code == mgl::Keyboard::Tab && event.key.shift);
bool move_right = (event.key.code == mgl::Keyboard::Right || (event.key.alt && event.key.code == mgl::Keyboard::L));
move_right |= (event.key.code == mgl::Keyboard::Tab && !event.key.shift);
if(move_left) {
if(selected_tab > 0)
move_selected_tab(selected_tab - 1);
} else if(move_right) {
if(selected_tab < (int)tabs.size() - 1)
move_selected_tab(selected_tab + 1);
} else if(event.key.code >= mgl::Keyboard::Num1 && event.key.code <= mgl::Keyboard::Num9) {
const int tab_target = event.key.code - mgl::Keyboard::Num1;
if(tab_target < (int)tabs.size())
move_selected_tab(tab_target);
}
}
}
static mgl::View create_scissor_view(mgl::vec2f pos, mgl::vec2f size) {
mgl::View view = { mgl::vec2i(pos.x, pos.y), mgl::vec2i(size.x, size.y) };
return view;
}
void Tabs::draw(mgl::Window &window, mgl::vec2f pos, float width) {
if(width - tab_margin_x < 0.0f || tabs.empty()) return;
container_width = width;
const int num_visible_tabs = std::min((int)tabs.size(), std::max(1, (int)(width / tab_min_width)));
width_per_tab = floor(width / num_visible_tabs);
const float tab_text_y = floor(pos.y + tab_height*0.5f - tab_text_size);
tab_background_width = floor(width_per_tab - tab_margin_x*2.0f);
background.set_size(mgl::vec2f(tab_background_width, tab_height));
if(shade_color != mgl::Color(0, 0, 0, 0)) {
shade.set_size(mgl::vec2f(width, get_shade_height()));
shade.set_position(mgl::vec2f(floor(pos.x), 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(tabs.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;
const mgl::View prev_view = window.get_view();
pos.x += scroll_fixed;
for(size_t i = 0; i < tabs.size(); ++i) {
const int index = i;
const float background_pos_x = 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.set_position(mgl::vec2f(background_pos_x, floor(pos.y)));
background.draw(window);
}
mgl::Text &tab_text = tabs[index].text;
float text_pos_x = floor(pos.x + i*width_per_tab + width_per_tab*0.5f - tab_text.get_bounds().size.x*0.5f);
text_pos_x = std::max(text_pos_x, background_pos_x);
window.set_view(create_scissor_view({ text_pos_x, tab_text_y }, { tab_background_width, tab_height*2 }));
window.draw(tab_text);
window.set_view(prev_view);
}
const float lw = floor(25.0f * get_config().scale);
const float lh = background.get_size().y;
if(tabs_cutoff_left) {
mgl::Vertex gradient_points[4];
gradient_points[0].position = mgl::vec2f(start_pos.x + tab_margin_x, start_pos.y);
gradient_points[1].position = mgl::vec2f(start_pos.x + tab_margin_x + lw, start_pos.y);
gradient_points[2].position = mgl::vec2f(start_pos.x + tab_margin_x + lw, start_pos.y + lh);
gradient_points[3].position = mgl::vec2f(start_pos.x + tab_margin_x, start_pos.y + lh);
gradient_points[0].color = shade_color;
gradient_points[1].color = mgl::Color(shade_color.r, shade_color.g, shade_color.b, 10);
gradient_points[2].color = mgl::Color(shade_color.r, shade_color.g, shade_color.b, 10);
gradient_points[3].color = shade_color;
window.draw(gradient_points, 4, mgl::PrimitiveType::Quads);
mgl::vec2i arrow_sprite_width = arrow_sprite.get_texture()->get_size();
arrow_sprite_width.y = arrow_sprite_width.x;
const mgl::vec2f arrow_scale_ratio = get_ratio(arrow_sprite_width, clamp_to_size_y(arrow_sprite_width, (int)lh - 8));
arrow_sprite.set_scale(arrow_scale_ratio);
arrow_sprite.set_origin(arrow_sprite.get_texture()->get_size().to_vec2f() * 0.5f);
arrow_sprite.set_position(start_pos + mgl::vec2f((int)(arrow_sprite.get_texture()->get_size().x * 0.5f * arrow_scale_ratio.x) + 5, (int)(lh * 0.5f)));
arrow_sprite.set_rotation(-90.0f);
arrow_sprite.set_color(get_theme().arrow_color);
window.draw(arrow_sprite);
}
if(tabs_cutoff_right) {
mgl::Vertex gradient_points[4];
gradient_points[0].position = mgl::vec2f(start_pos.x + width - lw - tab_margin_x, start_pos.y);
gradient_points[1].position = mgl::vec2f(start_pos.x + width, start_pos.y);
gradient_points[2].position = mgl::vec2f(start_pos.x + width, start_pos.y + lh);
gradient_points[3].position = mgl::vec2f(start_pos.x + width - lw - tab_margin_x, start_pos.y + lh);
gradient_points[0].color = mgl::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 = mgl::Color(shade_color.r, shade_color.g, shade_color.b, 10);
window.draw(gradient_points, 4, mgl::PrimitiveType::Quads);
mgl::vec2i arrow_sprite_width = arrow_sprite.get_texture()->get_size();
arrow_sprite_width.y = arrow_sprite_width.x;
const mgl::vec2f arrow_scale_ratio = get_ratio(arrow_sprite_width, clamp_to_size_y(arrow_sprite_width, (int)lh - 8));
arrow_sprite.set_scale(arrow_scale_ratio);
arrow_sprite.set_origin(arrow_sprite.get_texture()->get_size().to_vec2f() * 0.5f);
arrow_sprite.set_position(start_pos + mgl::vec2f(width - (int)(arrow_sprite.get_texture()->get_size().x * 0.5f * arrow_scale_ratio.x) - 5, (int)(lh * 0.5f)));
arrow_sprite.set_rotation(90.0f);
arrow_sprite.set_color(get_theme().arrow_color);
window.draw(arrow_sprite);
}
}
void Tabs::set_text(int index, const std::string &text) {
if(index < 0 || index >= (int)tabs.size() || text == tabs[index].text.get_string())
return;
tabs[index].text.set_string(text);
}
void Tabs::set_selected(int index) {
if(index >= 0 && index < (int)tabs.size())
move_selected_tab(index);
}
int Tabs::get_selected() const {
return selected_tab;
}
float Tabs::tab_index_to_x_offset(int index) {
return floor(index*width_per_tab + tab_margin_x);
}
}
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