void listbox::set_row_shown(const unsigned row, const bool shown)
{
assert(generator_);
window* window = get_window();
assert(window);
const int selected_row = get_selected_row();
bool resize_needed = false;
// Local scope for invalidate_layout_blocker
{
window::invalidate_layout_blocker invalidate_layout_blocker(*window);
generator_->set_item_shown(row, shown);
point best_size = generator_->calculate_best_size();
generator_->place(generator_->get_origin(), {std::max(best_size.x, content_visible_area().w), best_size.y});
resize_needed = !content_resize_request();
}
if(resize_needed) {
window->invalidate_layout();
} else {
content_grid_->set_visible_rectangle(content_visible_area());
set_is_dirty(true);
}
if(selected_row != get_selected_row()) {
fire(event::NOTIFY_MODIFIED, *this, nullptr);
}
}
void tlistbox::set_row_shown(const unsigned row, const bool shown)
{
assert(generator_);
twindow* window = get_window();
assert(window);
const int selected_row = get_selected_row();
bool resize_needed;
{
twindow::tinvalidate_layout_blocker invalidate_layout_blocker(*window);
generator_->set_item_shown(row, shown);
tpoint best_size = generator_->calculate_best_size();
generator_->place(generator_->get_origin(), { std::max(best_size.x, content_visible_area().w), best_size.y });
resize_needed = !content_resize_request();
}
if(resize_needed) {
window->invalidate_layout();
} else {
content_grid_->set_visible_rectangle(content_visible_area());
set_is_dirty(true);
}
if(selected_row != get_selected_row() && callback_value_changed_) {
callback_value_changed_(*this);
}
}
void tlistbox::handle_key_right_arrow(SDLMod modifier, bool& handled)
{
assert(generator_);
generator_->handle_key_right_arrow(modifier, handled);
// Inherited.
if(handled) {
// When scrolling make sure the new items is visible but leave the
// vertical scrollbar position.
const SDL_Rect& visible = content_visible_area();
SDL_Rect rect = generator_->item(
generator_->get_selected_item()).get_rect();
rect.y = visible.y;
rect.h = visible.h;
show_content_rect(rect);
if(callback_value_changed_) {
callback_value_changed_(this);
}
} else {
tscrollbar_container::handle_key_left_arrow(modifier, handled);
}
}
void tlistbox::set_row_shown(const std::vector<bool>& shown)
{
assert(generator_);
assert(shown.size() == get_item_count());
twindow *window = get_window();
assert(window);
const int selected_row = get_selected_row();
bool resize_needed;
{
twindow::tinvalidate_layout_blocker invalidate_layout_blocker(*window);
for(size_t i = 0; i < shown.size(); ++i) {
generator_->set_item_shown(i, shown[i]);
}
generator_->place(generator_->get_origin()
, generator_->calculate_best_size());
resize_needed = !content_resize_request();
}
if(resize_needed) {
window->invalidate_layout();
} else {
content_grid_->set_visible_area(content_visible_area());
set_dirty();
}
if(selected_row != get_selected_row() && callback_value_changed_) {
callback_value_changed_(this);
}
}
void tlistbox::handle_key_down_arrow(SDLMod modifier, bool& handled)
{
assert(generator_);
generator_->handle_key_down_arrow(modifier, handled);
if(handled) {
// When scrolling make sure the new items is visible but leave the
// horizontal scrollbar position.
const SDL_Rect& visible = content_visible_area();
SDL_Rect rect = generator_->item(generator_->get_selected_item())
.get_rectangle();
rect.x = visible.x;
rect.w = visible.w;
show_content_rect(rect);
if(callback_value_changed_) {
callback_value_changed_(*this);
}
} else {
// Inherited.
tscrollbar_container::handle_key_up_arrow(modifier, handled);
}
}
void listbox::place(const point& origin, const point& size)
{
boost::optional<unsigned> vertical_scrollbar_position, horizontal_scrollbar_position;
// Check if this is the first time placing the list box
if(get_origin() != point {-1, -1}) {
vertical_scrollbar_position = get_vertical_scrollbar_item_position();
horizontal_scrollbar_position = get_horizontal_scrollbar_item_position();
}
// Inherited.
scrollbar_container::place(origin, size);
const int selected_item = generator_->get_selected_item();
if(vertical_scrollbar_position && horizontal_scrollbar_position) {
LOG_GUI_L << LOG_HEADER << " restoring scroll position" << std::endl;
set_vertical_scrollbar_item_position(*vertical_scrollbar_position);
set_horizontal_scrollbar_item_position(*horizontal_scrollbar_position);
} else if(selected_item != -1) {
LOG_GUI_L << LOG_HEADER << " making the initially selected item visible" << std::endl;
const SDL_Rect& visible = content_visible_area();
SDL_Rect rect = generator_->item(selected_item).get_rectangle();
rect.x = visible.x;
rect.w = visible.w;
show_content_rect(rect);
}
}
void listbox::set_row_shown(const boost::dynamic_bitset<>& shown)
{
assert(generator_);
assert(shown.size() == get_item_count());
if(generator_->get_items_shown() == shown) {
LOG_GUI_G << LOG_HEADER << " returning early" << std::endl;
return;
}
window* window = get_window();
assert(window);
const int selected_row = get_selected_row();
bool resize_needed = false;
// Local scope for invalidate_layout_blocker
{
window::invalidate_layout_blocker invalidate_layout_blocker(*window);
for(size_t i = 0; i < shown.size(); ++i) {
generator_->set_item_shown(i, shown[i]);
}
point best_size = generator_->calculate_best_size();
generator_->place(generator_->get_origin(), {std::max(best_size.x, content_visible_area().w), best_size.y});
resize_needed = !content_resize_request();
}
if(resize_needed) {
window->invalidate_layout();
} else {
content_grid_->set_visible_rectangle(content_visible_area());
set_is_dirty(true);
}
if(selected_row != get_selected_row()) {
fire(event::NOTIFY_MODIFIED, *this, nullptr);
}
}
void tlistbox::set_row_shown(const boost::dynamic_bitset<>& shown)
{
assert(generator_);
assert(shown.size() == get_item_count());
if (generator_->get_items_shown() == shown)
{
LOG_GUI_G << LOG_HEADER << " returning early" << std::endl;
return;
}
twindow* window = get_window();
assert(window);
const int selected_row = get_selected_row();
bool resize_needed;
{
twindow::tinvalidate_layout_blocker invalidate_layout_blocker(*window);
for(size_t i = 0; i < shown.size(); ++i) {
generator_->set_item_shown(i, shown[i]);
}
tpoint best_size = generator_->calculate_best_size();
generator_->place(generator_->get_origin(), { std::max(best_size.x, content_visible_area().w), best_size.y });
resize_needed = !content_resize_request();
}
if(resize_needed) {
window->invalidate_layout();
} else {
content_grid_->set_visible_rectangle(content_visible_area());
set_is_dirty(true);
}
if(selected_row != get_selected_row() && callback_value_changed_) {
callback_value_changed_(*this);
}
}
bool ttree_view::handle_up_down_arrow()
{
if(ttree_view_node* next = get_next_node<func>())
{
next->select_node();
SDL_Rect visible = content_visible_area();
SDL_Rect rect = next->get_grid().get_rectangle();
visible.y = rect.y;// - content_grid()->get_y();
visible.h = rect.h;
show_content_rect(visible);
return true;
}
return false;
}
void listbox::list_item_clicked(widget& caller)
{
assert(generator_);
/** @todo Hack to capture the keyboard focus. */
get_window()->keyboard_capture(this);
for(size_t i = 0; i < generator_->get_item_count(); ++i) {
if(generator_->item(i).has_widget(caller)) {
toggle_button* checkbox = dynamic_cast<toggle_button*>(&caller);
if(checkbox != nullptr) {
generator_->select_item(i, checkbox->get_value_bool());
} else {
generator_->toggle_item(i);
}
// TODO: enable this code once toggle_panel::set_value dispatches
// NOTIFY_MODIFED events. See comment in said function for more details.
#if 0
selectable_item& selectable = dynamic_cast<selectable_item&>(caller);
generator_->select_item(i, selectable.get_value_bool());
#endif
fire(event::NOTIFY_MODIFIED, *this, nullptr);
break;
}
}
const int selected_item = generator_->get_selected_item();
if(selected_item == -1) {
return;
}
const SDL_Rect& visible = content_visible_area();
SDL_Rect rect = generator_->item(selected_item).get_rectangle();
if(sdl::rects_overlap(visible, rect)) {
rect.x = visible.x;
rect.w = visible.w;
show_content_rect(rect);
}
}
bool tlistbox::update_content_size()
{
if(get_visible() == twidget::INVISIBLE) {
return true;
}
if(get_size() == tpoint(0, 0)) {
return false;
}
if(content_resize_request(true)) {
content_grid_->set_visible_area(content_visible_area());
set_dirty();
return true;
}
return false;
}
bool tlistbox::update_content_size()
{
if(get_visible() == twidget::tvisible::invisible) {
return true;
}
if(get_size() == tpoint(0, 0)) {
return false;
}
if(content_resize_request(true)) {
content_grid_->set_visible_rectangle(content_visible_area());
set_is_dirty(true);
return true;
}
return false;
}
void listbox::update_visible_area_on_key_event(const KEY_SCROLL_DIRECTION direction)
{
const SDL_Rect& visible = content_visible_area();
SDL_Rect rect = generator_->item(generator_->get_selected_item()).get_rectangle();
// When scrolling make sure the new items are visible...
if(direction == KEY_VERTICAL) {
// ...but leave the horizontal scrollbar position.
rect.x = visible.x;
rect.w = visible.w;
} else {
// ...but leave the vertical scrollbar position.
rect.y = visible.y;
rect.h = visible.h;
}
show_content_rect(rect);
fire(event::NOTIFY_MODIFIED, *this, nullptr);
}
void tlistbox::place(const tpoint& origin, const tpoint& size)
{
// Inherited.
tscrollbar_container::place(origin, size);
/**
* @todo Work-around to set the selected item visible again.
*
* At the moment the listboxes and dialogs in general are resized a lot as
* work-around for sizing. So this function makes the selected item in view
* again. It doesn't work great in all cases but the proper fix is to avoid
* resizing dialogs a lot. Need more work later on.
*/
const int selected_item = generator_->get_selected_item();
if(selected_item != -1) {
const SDL_Rect& visible = content_visible_area();
SDL_Rect rect = generator_->item(selected_item).get_rect();
rect.x = visible.x;
rect.w = visible.w;
show_content_rect(rect);
}
}
