void FocusManager::update(
Widget* const top_widget,
const KeyEvent event
) {
if( focus_widget() ) {
const auto focus_screen_rect = focus_widget()->screen_rect();
const auto test_fn = [&focus_screen_rect, event](ui::Widget* const w) -> test_result_t {
// if( w->visible() && w->focusable() ) {
if( w->focusable() ) {
const auto distance = rect_distances(event, focus_screen_rect, w->screen_rect());
if( distance >= 0 ) {
return { w, distance };
}
}
return { nullptr, 0 };
};
test_collection_t collection;
widget_collect_visible(top_widget, test_fn, collection);
const auto compare_fn = [](const test_result_t& a, const test_result_t& b) {
return a.second < b.second;
};
const auto nearest = std::min_element(collection.cbegin(), collection.cend(), compare_fn);
if( nearest != collection.cend() ) {
//focus->blur();
const auto new_focus = (*nearest).first;
set_focus_widget(new_focus);
}
}
}
void fgui_application_process_event(struct fgui_application *app,
struct fgui_event *event)
{
int ret;
struct fgui_widget *widget;
/* TAB cycles focus */
if (event->type == FGUI_EVENT_KEYDOWN && event->key.keycode == FGUI_KEY_TAB) {
set_focus_widget(app, DIR_NEXT);
}
/* not tab, pass on to widget */
if (!app->focus_widget) {
return;
}
/*
* Send the event to each widget in the parent-child chain, until
* someone handles it.
*/
for (widget = app->focus_widget; widget != NULL; widget = widget->parent) {
ret = widget->event_handler(widget, event);
if (ret == 0) {
break;
}
}
}
//-----------------------------------------------------------------//
void enable(widget* root, bool flag = true, bool child = false)
{
if(root == nullptr) return;
if(!root->get_param().state_[widget::state::ENABLE] && flag) {
set_focus_widget(root);
}
root->at_param().state_[widget::state::ENABLE] = flag;
if(!child) {
return;
}
widgets ws;
parents_widget(root, ws);
for(auto w : ws) {
w->at_param().state_[widget::state::ENABLE] = flag;
}
}
