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#include "../../include/gui/List.hpp"
static float floor(float f) {
return (int)f;
}
namespace gsr {
// TODO: Make this modifiable, multiple by window size.
// TODO: Add homogeneous option, using a specified max size of this list.
static const mgl::vec2f spacing(30.0f, 10.0f);
List::List(Orientation orientation, Alignment content_alignment) : orientation(orientation), content_alignment(content_alignment) {}
bool List::on_event(mgl::Event &event, mgl::Window &window, mgl::vec2f) {
// We want to store the selected child widget since it can change in the event loop below
Widget *selected_widget = selected_child_widget;
if(selected_widget) {
if(!selected_widget->on_event(event, window, mgl::vec2f(0.0f, 0.0f)))
return false;
}
// Process widgets by visibility (backwards)
for(auto it = widgets.rbegin(), end = widgets.rend(); it != end; ++it) {
// Ignore offset because widgets are positioned with offset in ::draw, this solution is simpler
if(it->get() != selected_widget) {
if(!(*it)->on_event(event, window, mgl::vec2f(0.0f, 0.0f)))
return false;
}
}
return true;
}
void List::draw(mgl::Window &window, mgl::vec2f offset) {
mgl::vec2f draw_pos = position + offset;
offset = {0.0f, 0.0f};
Widget *selected_widget = selected_child_widget;
// TODO: Handle start/end alignment
const mgl::vec2f size = get_size();
switch(orientation) {
case Orientation::VERTICAL: {
for(auto &widget : widgets) {
if(content_alignment == Alignment::CENTER)
offset.x = floor(size.x * 0.5f - widget->get_size().x * 0.5f);
widget->set_position(draw_pos + offset);
if(widget.get() != selected_widget)
widget->draw(window, mgl::vec2f(0.0f, 0.0f));
draw_pos.y += widget->get_size().y + spacing.y;
}
break;
}
case Orientation::HORIZONTAL: {
for(auto &widget : widgets) {
if(content_alignment == Alignment::CENTER)
offset.y = floor(size.y * 0.5f - widget->get_size().y * 0.5f);
widget->set_position(draw_pos + offset);
if(widget.get() != selected_widget)
widget->draw(window, mgl::vec2f(0.0f, 0.0f));
draw_pos.x += widget->get_size().x + spacing.x;
}
break;
}
}
if(selected_widget)
selected_widget->draw(window, mgl::vec2f(0.0f, 0.0f));
}
void List::add_widget(std::unique_ptr<Widget> widget) {
widget->parent_widget = this;
widgets.push_back(std::move(widget));
}
// TODO: Cache result
mgl::vec2f List::get_size() {
mgl::vec2f size;
switch(orientation) {
case Orientation::VERTICAL: {
for(auto &widget : widgets) {
const auto widget_size = widget->get_size();
size.x = std::max(size.x, widget_size.x);
size.y += widget_size.y + spacing.y;
}
break;
}
case Orientation::HORIZONTAL: {
for(auto &widget : widgets) {
const auto widget_size = widget->get_size();
size.x += widget_size.x + spacing.x;
size.y = std::max(size.y, widget_size.y);
}
break;
}
}
return size;
}
}
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