1 #include <msp/core/raii.h>
2 #include <msp/debug/demangle.h>
3 #include <msp/gl/matrix.h>
4 #include <msp/gl/meshbuilder.h>
17 incompatible_data::incompatible_data(const type_info &ti):
18 logic_error("expected "+Debug::demangle(ti.name()))
23 data(new BasicListData<string>),
29 List::List(ListData &d):
38 input_type = INPUT_NAVIGATION;
46 ignore_slider_change = false;
48 observer = new DataObserver(*this);
52 slider.signal_value_changed.connect(sigc::mem_fun(this, &List::slider_value_changed));
63 void List::autosize_special(const Part &part, Geometry &ageom) const
65 if(part.get_name()=="items")
67 const Sides &margin = part.get_margin();
71 for(unsigned i=0; i<items.size(); ++i)
74 items[i]->autosize(igeom);
75 max_w = max(max_w, igeom.w);
76 if(view_size==0 || i<view_size)
80 if(!items.empty() && items.size()<view_size)
81 total_h = total_h*view_size/items.size();
83 ageom.w = max(ageom.w, max_w+margin.left+margin.right);
84 ageom.h = max(ageom.h, total_h+margin.top+margin.bottom);
86 else if(part.get_name()=="slider")
87 autosize_child(slider, part, ageom);
90 void List::set_data(ListData &d)
93 item_factory->set_data(d);
101 observer = new DataObserver(*this);
103 for(vector<Item *>::iterator i=items.begin(); i!=items.end(); ++i)
106 unsigned n_items = data->size();
107 for(unsigned i=0; i<n_items; ++i)
109 Item *item = create_item(i);
110 items.push_back(item);
116 void List::items_changed()
118 signal_autosize_changed.emit();
122 List::Item *List::create_item(unsigned index)
126 item = item_factory->create_item(index);
128 item = new BasicItem(data->get_string(index));
129 if(static_cast<int>(index)==sel_index)
130 item->set_active(true);
133 item->signal_autosize_changed.connect(sigc::bind(sigc::mem_fun(this, &List::item_autosize_changed), item));
137 void List::set_view_size(unsigned s)
140 signal_autosize_changed.emit();
143 void List::set_view_all()
148 void List::set_selected_index(int i)
150 if(i>=static_cast<int>(data->size()))
151 throw out_of_range("List::set_selected_index");
153 if(i==sel_index || (i<0 && sel_index<0))
157 items[sel_index]->set_active(false);
163 signal_selection_cleared.emit();
169 items[sel_index]->set_active(true);
171 set_input_focus(items[focus_index]);
172 signal_item_selected.emit(sel_index);
176 void List::rebuild_special(const Part &part)
178 if(part.get_name()=="slider")
179 reposition_child(slider, part);
180 else if(part.get_name()=="items")
182 SetFlag flag(ignore_slider_change);
185 const Sides &margin = part.get_margin();
186 unsigned w = geom.w-min(geom.w, margin.left+margin.right);
187 unsigned y = geom.h-min(geom.h, margin.top);
188 for(unsigned i=0; i<items.size(); ++i)
191 items[i]->set_visible(false);
194 Geometry igeom = items[i]->get_geometry();
195 if(igeom.h+margin.bottom<=y)
197 items[i]->set_visible(true);
199 igeom.x = margin.left;
202 items[i]->set_geometry(igeom);
206 items[i]->set_visible(false);
213 Widget::rebuild_special(part);
216 void List::render_special(const Part &part, GL::Renderer &renderer) const
218 if(part.get_name()=="items")
220 for(unsigned i=first; (i<items.size() && items[i]->is_visible()); ++i)
221 items[i]->render(renderer);
223 else if(part.get_name()=="slider")
224 slider.render(renderer);
227 void List::button_press(int x, int y, unsigned btn)
234 change = min(first, change);
235 slider.set_value(max_scroll-(first-change));
239 change = min(max_scroll-first, change);
240 slider.set_value(max_scroll-(first+change));
245 Container::button_press(x, y, btn);
246 if(click_focus && btn==1)
248 for(unsigned i=first; (i<items.size() && items[i]->is_visible()); ++i)
249 if(click_focus==items[i])
251 set_selected_index(i);
258 void List::focus_in()
260 if(focus_index>=0 && items[focus_index]->is_visible())
261 set_input_focus(items[focus_index]);
264 if(sel_index>=0 && items[sel_index]->is_visible())
265 set_focus_index(sel_index);
266 else if(!items.empty())
267 set_focus_index(first);
271 bool List::navigate(Navigation nav)
273 if(nav==NAV_UP && !items.empty())
276 set_focus_index(focus_index-1);
278 else if(nav==NAV_DOWN && !items.empty())
280 if(static_cast<unsigned>(focus_index+1)<items.size())
281 set_focus_index(focus_index+1);
283 else if(nav==NAV_ACTIVATE)
284 set_selected_index(focus_index);
291 void List::set_focus_index(int i)
298 set_input_focus(items[focus_index]);
302 void List::item_autosize_changed(Item *item)
305 signal_autosize_changed.emit();
309 unsigned List::last_to_first(unsigned last) const
314 unsigned view_h = geom.h;
315 if(const Part *items_part = style->get_part("items"))
317 const Sides &margin = items_part->get_margin();
318 view_h -= margin.top+margin.bottom;
321 unsigned items_h = 0;
322 for(unsigned i=last; i<items.size(); --i)
324 items_h += items[i]->get_geometry().h;
326 return min(i+1, last);
332 void List::check_view_range()
340 max_scroll = last_to_first(items.size()-1);
345 slider.set_range(0, max_scroll);
346 slider.set_value(max_scroll-first);
349 void List::scroll_to_focus()
351 if(focus_index<0 || items[focus_index]->is_visible())
354 if(static_cast<unsigned>(focus_index)<first)
355 slider.set_value(max_scroll-focus_index);
357 slider.set_value(max_scroll-last_to_first(focus_index));
360 void List::slider_value_changed(double value)
362 if(max_scroll>0 && !ignore_slider_change)
364 first = max_scroll-static_cast<unsigned>(value);
369 void List::adjust_index(int &index, int pos, int change)
374 index = (change>0 ? index+change : -1);
378 List::DataObserver::DataObserver(List &l):
381 list.data->signal_item_added.connect(sigc::mem_fun(this, &DataObserver::item_added));
382 list.data->signal_item_removed.connect(sigc::mem_fun(this, &DataObserver::item_removed));
383 list.data->signal_cleared.connect(sigc::mem_fun(this, &DataObserver::cleared));
384 list.data->signal_refresh_item.connect(sigc::mem_fun(this, &DataObserver::refresh_item));
387 void List::DataObserver::item_added(unsigned i)
389 adjust_index(list.sel_index, i, 1);
390 adjust_index(list.focus_index, i, 1);
392 Item *item = list.create_item(i);
393 list.items.insert(list.items.begin()+i, item);
394 list.items_changed();
397 void List::DataObserver::item_removed(unsigned i)
399 bool had_selection = (list.sel_index>=0);
400 adjust_index(list.sel_index, i, -1);
401 adjust_index(list.focus_index, i, -1);
403 delete list.items[i];
404 list.items.erase(list.items.begin()+i);
405 list.items_changed();
407 if(had_selection && list.sel_index<0)
408 list.signal_selection_cleared.emit();
411 void List::DataObserver::cleared()
414 list.focus_index = -1;
415 for(vector<Item *>::iterator i=list.items.begin(); i!=list.items.end(); ++i)
418 list.items_changed();
420 list.signal_selection_cleared.emit();
423 void List::DataObserver::refresh_item(unsigned i)
425 delete list.items[i];
426 // Avoid stale pointer while create_item is executing
428 list.items[i] = list.create_item(i);
429 list.items_changed();
433 void List::Item::autosize_special(const Part &part, Geometry &ageom) const
435 if(part.get_name()=="children")
437 const Sides &margin = part.get_margin();
438 for(list<Child *>::const_iterator i=children.begin(); i!=children.end(); ++i)
441 (*i)->widget->autosize(cgeom);
442 ageom.w = max(ageom.w, cgeom.x+cgeom.w+margin.right);
443 ageom.h = max(ageom.h, cgeom.y+cgeom.h+margin.top);
448 void List::Item::set_active(bool a)
450 set_state(ACTIVE, (a ? ACTIVE : NORMAL));
453 void List::Item::render_special(const Part &part, GL::Renderer &renderer) const
455 if(part.get_name()=="children")
457 for(list<Child *>::const_iterator i=children.begin(); i!=children.end(); ++i)
458 (*i)->widget->render(renderer);
463 void List::MultiColumnItem::check_widths(vector<unsigned> &widths) const
465 if(widths.size()<children.size())
466 widths.resize(children.size(), 0);
469 for(list<Child *>::const_iterator i=children.begin(); i!=children.end(); ++i, ++n)
472 (*i)->widget->autosize(cgeom);
473 // TODO invent a better way to specify spacings
474 widths[n] = max(widths[n], cgeom.w+8);
478 void List::MultiColumnItem::set_widths(const vector<unsigned> &widths)
483 const Part *part = style->get_part("children");
487 const Sides &margin = part->get_margin();
490 for(list<Child *>::const_iterator i=children.begin(); i!=children.end(); ++i, ++n)
492 (*i)->widget->set_position(x, margin.bottom);
497 void List::MultiColumnItem::on_style_change()
502 for(std::list<Child *>::const_iterator i=children.begin(); i!=children.end(); ++i)
503 (*i)->widget->autosize();
505 vector<unsigned> widths;
506 List *list = static_cast<List *>(parent);
507 for(vector<Item *>::const_iterator i=list->items.begin(); i!=list->items.end(); ++i)
509 if(MultiColumnItem *mci = dynamic_cast<MultiColumnItem *>(*i))
510 mci->check_widths(widths);
512 vector<unsigned> self_widths(widths);
513 check_widths(self_widths);
514 bool update_all = false;
515 for(unsigned i=0; (!update_all && i<widths.size() && i<self_widths.size()); ++i)
516 update_all = self_widths[i]>widths[i];
520 for(vector<Item *>::const_iterator i=list->items.begin(); i!=list->items.end(); ++i)
521 if(MultiColumnItem *mci = dynamic_cast<MultiColumnItem *>(*i))
522 mci->set_widths(self_widths);
525 set_widths(self_widths);
529 List::BasicItem::BasicItem(const string &text):
535 void List::BasicItem::on_style_change()
541 if(const Part *part = style->get_part("children"))
543 const Sides &margin = part->get_margin();
544 label.set_position(margin.left, margin.bottom);
549 List::Loader::Loader(List &l):
550 DataFile::DerivedObjectLoader<List, Widget::Loader>(l)
552 add("item", &Loader::item);
553 add("view_size", &List::view_size);
556 void List::Loader::item(const string &v)
558 dynamic_cast<BasicListData<string> &>(*obj.data).append(v);