+ state = BT_SELECTED;
+ }
+ break;
+ case SDL_KEYDOWN: // key pressed
+ if(event.key.keysym.sym == binding)
+ state = BT_SELECTED;
+ break;
+ default:
+ break;
+ }
+return state;
+}
+
+/* Group of buttons */
+
+ButtonGroup::ButtonGroup(Vector pos_, Vector buttons_size_, Vector buttons_box_)
+ : pos(pos_), buttons_size(buttons_size_), buttons_box(buttons_box_)
+{
+buttons.clear();
+row = 0;
+button_selected = -1;
+mouse_hover = false;
+mouse_left_button = false;
+buttons_pair_nb = 0;
+}
+
+ButtonGroup::~ButtonGroup()
+{
+}
+
+void ButtonGroup::add_button(Button button, int id, bool select)
+{
+button.pos.x = ((buttons.size()-buttons_pair_nb) % (int)buttons_box.x) * buttons_size.x;
+button.pos.y = ((int)((buttons.size()-buttons_pair_nb) / buttons_box.x)) * buttons_size.y;
+button.size = buttons_size;
+button.id = id;
+if(select)
+ button_selected = id;
+
+buttons.push_back(button);
+}
+
+void ButtonGroup::add_pair_of_buttons(Button button1, int id1, Button button2, int id2)
+{
+button1.pos.x = button2.pos.x = ((buttons.size()-buttons_pair_nb) % (int)buttons_box.x) * buttons_size.x;
+button1.pos.y = button2.pos.y = ((int)((buttons.size()-buttons_pair_nb) / buttons_box.x)) * buttons_size.y;
+button1.size.x = button2.size.x = buttons_size.x;
+button1.size.y = button2.size.y = buttons_size.y / 2;
+button2.pos.y += buttons_size.y / 2;
+button1.id = id1;
+button2.id = id2;
+
+buttons_pair_nb++;
+buttons.push_back(button1);
+buttons.push_back(button2);
+}
+
+void ButtonGroup::draw(DrawingContext &context)
+{
+context.draw_filled_rect(pos - Vector(12,4),
+ Vector(buttons_size.x*buttons_box.x + 16, buttons_size.y*buttons_box.y + 8),
+ Color (0,0,0, 128), LAYER_GUI-1);
+
+context.push_transform();
+context.set_translation(Vector(-pos.x, -pos.y + buttons_size.y*row));
+for(Buttons::iterator i = buttons.begin(); i != buttons.end(); ++i)
+ {
+ if(i->pos.y < row*buttons_size.y ||
+ i->pos.y + i->size.y > (row + buttons_box.y) * buttons_size.y)
+ continue;
+
+ i->draw(context, i->id == button_selected ? true : false);
+ }
+context.pop_transform();
+}
+
+bool ButtonGroup::event(SDL_Event &event)
+{
+bool caught_event = false;
+
+switch(event.type)
+ {
+ case SDL_MOUSEMOTION:
+ mouse_hover = false;
+
+ if(mouse_left_button)
+ {
+ pos.x += event.motion.xrel;
+ pos.y += event.motion.yrel;
+ caught_event = true;
+ }
+ if(event.button.x > pos.x-12 && event.button.x < pos.x+16 + buttons_box.x*buttons_size.x &&
+ event.button.y > pos.y-4 && event.button.y < pos.y+8 + buttons_box.y*buttons_size.y)
+ mouse_hover = true;
+ break;
+ case SDL_MOUSEBUTTONDOWN:
+ if(event.button.x < pos.x-12 || event.button.x > pos.x+16 +
+ buttons_box.x*buttons_size.x || event.button.y < pos.y-4 ||
+ event.button.y > pos.y+8 + buttons_box.y*buttons_size.y)
+ break;
+
+ caught_event = true;
+
+ if(event.button.button == SDL_BUTTON_WHEELUP)
+ {
+ row--;
+ if(row < 0)
+ row = 0;
+ }
+ else if(event.button.button == SDL_BUTTON_WHEELDOWN)
+ {
+ row++;
+ if(row > (int)((buttons.size()-buttons_pair_nb)/buttons_box.x) - (int)buttons_box.y +
+ ((int)(buttons.size()-buttons_pair_nb)%(int)buttons_box.x != 0 ? 1 : 0))
+ row = (int)((buttons.size()-buttons_pair_nb)/buttons_box.x) - (int)buttons_box.y +
+ ((int)(buttons.size()-buttons_pair_nb)%(int)buttons_box.x != 0 ? 1 : 0);
+ }
+ else if(event.button.button == SDL_BUTTON_LEFT)
+ mouse_left_button = true;
+ else
+ caught_event = false;
+ break;
+ case SDL_MOUSEBUTTONUP:
+ mouse_left_button = false;
+ break;
+ default:
+ break;
+ }
+
+if(caught_event)
+ return true;
+
+for(Buttons::iterator i = buttons.begin(); i != buttons.end(); ++i)
+ {
+ if(i->pos.y < row*buttons_size.y ||
+ i->pos.y + i->size.y > (row + buttons_box.y) * buttons_size.y)
+ continue;
+
+ if(i->event(event, (int)pos.x,
+ (int)pos.y - row*(int)buttons_size.y) == BT_SELECTED)