void menu::key_press(SDLKey key)
{
if (!click_selects_) {
switch(key) {
case SDLK_UP:
move_selection_up(1);
break;
case SDLK_DOWN:
move_selection_down(1);
break;
case SDLK_PAGEUP:
move_selection_up(max_items_onscreen());
break;
case SDLK_PAGEDOWN:
move_selection_down(max_items_onscreen());
break;
case SDLK_HOME:
set_selection_pos(0);
break;
case SDLK_END:
set_selection_pos(items_.size() - 1);
break;
//case SDLK_RETURN:
// double_clicked_ = true;
// break;
default:
break;
}
}
if (num_selects_ && key >= SDLK_1 && key <= SDLK_9)
set_selection_pos(key - SDLK_1);
}
void menu::update_size()
{
unsigned int h = heading_height();
for(size_t i = get_position(),
i_end = std::min(items_.size(), i + max_items_onscreen());
i < i_end; ++i)
h += get_item_rect(i).h;
h = std::max(h, height());
if (max_height_ > 0 && h > static_cast<unsigned>(max_height_)) {
h = max_height_;
}
use_ellipsis_ = false;
std::vector<int> const &widths = column_widths();
unsigned w = std::accumulate(widths.begin(), widths.end(), 0);
if (items_.size() > max_items_onscreen())
w += scrollbar_width();
w = std::max(w, width());
if (max_width_ > 0 && w > static_cast<unsigned>(max_width_)) {
use_ellipsis_ = true;
w = max_width_;
}
update_scrollbar_grip_height();
set_measurements(w, h);
}
SDL_Rect menu::get_item_rect_internal(size_t item) const
{
//unsigned int first_item_on_screen = get_position();
unsigned int first_item_on_screen = get_position() / item_height_;
unsigned int leftovers = get_position() - (first_item_on_screen * item_height_);
if (item < first_item_on_screen ||
size_t(item) >= first_item_on_screen + max_items_onscreen() + 2) {
return empty_rect;
}
const std::map<int,SDL_Rect>::const_iterator i = itemRects_.find(item);
if(i != itemRects_.end())
return i->second;
SDL_Rect const &loc = inner_location();
int y = loc.y + heading_height();
if (item != first_item_on_screen) {
const SDL_Rect& prev = get_item_rect_internal(item-1);
y = prev.y + prev.h;
}
else
{
// KP: sub-item scrolling
y -= leftovers;
}
SDL_Rect res = { loc.x, y, loc.w, get_item_height(item) };
SDL_Rect const &screen_area = ::screen_area();
if(res.x > screen_area.w) {
return empty_rect;
} else if(res.x + res.w > screen_area.w) {
res.w = screen_area.w - res.x;
}
if(res.y > screen_area.h) {
return empty_rect;
} else if(res.y + res.h > screen_area.h) {
res.h = screen_area.h - res.y;
}
//only insert into the cache if the menu's co-ordinates have
//been initialized
if (loc.x > 0 && loc.y > 0)
itemRects_.insert(std::pair<int,SDL_Rect>(item,res));
return res;
}
void menu::update_scrollbar_grip_height()
{
set_full_size(items_.size());
set_shown_size(max_items_onscreen());
}
