1 #include <msp/debug/demangle.h>
2 #include <msp/gl/matrix.h>
3 #include <msp/gl/meshbuilder.h>
16 incompatible_data::incompatible_data(const type_info &ti):
17 logic_error("expected "+Debug::demangle(ti.name()))
22 data(new BasicListData<string>),
28 List::List(ListData &d):
43 observer = new DataObserver(*this);
47 slider.signal_value_changed.connect(sigc::mem_fun(this, &List::slider_value_changed));
58 void List::autosize_special(const Part &part, Geometry &ageom) const
60 if(part.get_name()=="items")
62 const Sides &margin = part.get_margin();
66 for(unsigned i=0; i<items.size(); ++i)
69 items[i]->autosize(igeom);
70 max_w = max(max_w, igeom.w);
71 if(view_size==0 || i<view_size)
75 if(!items.empty() && items.size()<view_size)
76 total_h = total_h*view_size/items.size();
78 ageom.w = max(ageom.w, max_w+margin.left+margin.right);
79 ageom.h = max(ageom.h, total_h+margin.top+margin.bottom);
81 else if(part.get_name()=="slider")
82 autosize_child(slider, part, ageom);
85 void List::set_data(ListData &d)
88 item_factory->set_data(d);
96 observer = new DataObserver(*this);
98 for(vector<Item *>::iterator i=items.begin(); i!=items.end(); ++i)
101 unsigned n_items = data->size();
102 for(unsigned i=0; i<n_items; ++i)
104 Item *item = create_item(i);
105 items.push_back(item);
111 void List::items_changed()
114 signal_autosize_changed.emit();
118 List::Item *List::create_item(unsigned index)
122 item = item_factory->create_item(index);
124 item = new BasicItem(data->get_string(index));
126 item->signal_autosize_changed.connect(sigc::mem_fun(this, &List::item_autosize_changed));
130 void List::set_view_size(unsigned s)
133 signal_autosize_changed.emit();
136 void List::set_view_all()
141 void List::set_selected_index(int i)
143 if(i>=static_cast<int>(data->size()))
144 throw out_of_range("List::set_selected_index");
150 items[sel_index]->set_active(false);
156 items[sel_index]->set_active(true);
157 signal_item_selected.emit(sel_index);
161 void List::rebuild_special(const Part &part)
163 if(part.get_name()=="slider")
164 reposition_child(slider, part);
165 Widget::rebuild_special(part);
168 void List::render_special(const Part &part, GL::Renderer &renderer) const
170 if(part.get_name()=="items")
172 for(unsigned i=first; (i<items.size() && items[i]->is_visible()); ++i)
173 items[i]->render(renderer);
175 else if(part.get_name()=="slider")
176 slider.render(renderer);
179 void List::button_press(int x, int y, unsigned btn)
181 Container::button_press(x, y, btn);
182 if(click_focus && btn==1)
184 for(unsigned i=first; (i<items.size() && items[i]->is_visible()); ++i)
185 if(click_focus==items[i])
187 set_selected_index(i);
193 void List::on_geometry_change()
200 void List::on_style_change()
210 void List::item_autosize_changed()
212 signal_autosize_changed.emit();
216 void List::reposition_items()
221 if(const Part *items_part = style->get_part("items"))
223 const Sides &margin = items_part->get_margin();
224 unsigned w = geom.w-min(geom.w, margin.left+margin.right);
225 unsigned y = geom.h-min(geom.h, margin.top);
226 for(unsigned i=0; i<items.size(); ++i)
229 items[i]->set_visible(false);
233 items[i]->autosize(igeom);
234 if(igeom.h+margin.bottom<=y)
236 items[i]->set_visible(true);
238 igeom.x = margin.left;
241 items[i]->set_geometry(igeom);
245 items[i]->set_visible(false);
253 void List::check_view_range()
259 if(const Part *items_part = style->get_part("items"))
261 const Sides &margin = items_part->get_margin();
262 h -= margin.top+margin.bottom;
265 max_scroll = items.size();
266 for(unsigned i=items.size(); i-->0; )
268 unsigned ih = items[i]->get_geometry().h;
279 slider.set_range(0, max_scroll);
280 slider.set_value(max_scroll-first);
283 void List::slider_value_changed(double value)
287 first = max_scroll-static_cast<unsigned>(value);
293 List::DataObserver::DataObserver(List &l):
296 list.data->signal_item_added.connect(sigc::mem_fun(this, &DataObserver::item_added));
297 list.data->signal_item_removed.connect(sigc::mem_fun(this, &DataObserver::item_removed));
298 list.data->signal_cleared.connect(sigc::mem_fun(this, &DataObserver::cleared));
299 list.data->signal_refresh_item.connect(sigc::mem_fun(this, &DataObserver::refresh_item));
302 void List::DataObserver::item_added(unsigned i)
304 if(list.sel_index>=static_cast<int>(i))
307 Item *item = list.create_item(i);
308 list.items.insert(list.items.begin()+i, item);
309 list.items_changed();
312 void List::DataObserver::item_removed(unsigned i)
314 if(list.sel_index>static_cast<int>(i))
316 else if(list.sel_index==static_cast<int>(i))
319 delete list.items[i];
320 list.items.erase(list.items.begin()+i);
321 list.items_changed();
324 void List::DataObserver::cleared()
327 for(vector<Item *>::iterator i=list.items.begin(); i!=list.items.end(); ++i)
330 list.items_changed();
333 void List::DataObserver::refresh_item(unsigned i)
335 delete list.items[i];
336 list.items[i] = list.create_item(i);
337 list.items_changed();
341 void List::Item::autosize_special(const Part &part, Geometry &ageom) const
343 if(part.get_name()=="children")
345 const Sides &margin = part.get_margin();
346 for(list<Child *>::const_iterator i=children.begin(); i!=children.end(); ++i)
349 (*i)->widget->autosize(cgeom);
350 ageom.w = max(ageom.w, cgeom.x+cgeom.w+margin.right);
351 ageom.h = max(ageom.h, cgeom.y+cgeom.h+margin.top);
356 void List::Item::set_active(bool a)
358 set_state(ACTIVE, (a ? ACTIVE : NORMAL));
361 void List::Item::render_special(const Part &part, GL::Renderer &renderer) const
363 if(part.get_name()=="children")
365 for(list<Child *>::const_iterator i=children.begin(); i!=children.end(); ++i)
366 (*i)->widget->render(renderer);
371 void List::MultiColumnItem::check_widths(vector<unsigned> &widths) const
373 if(widths.size()<children.size())
374 widths.resize(children.size(), 0);
377 for(list<Child *>::const_iterator i=children.begin(); i!=children.end(); ++i, ++n)
380 (*i)->widget->autosize(cgeom);
381 // TODO invent a better way to specify spacings
382 widths[n] = max(widths[n], cgeom.w+8);
386 void List::MultiColumnItem::set_widths(const vector<unsigned> &widths)
391 const Part *part = style->get_part("children");
395 const Sides &margin = part->get_margin();
398 for(list<Child *>::const_iterator i=children.begin(); i!=children.end(); ++i, ++n)
400 (*i)->widget->set_position(x, margin.bottom);
405 void List::MultiColumnItem::on_style_change()
410 for(std::list<Child *>::const_iterator i=children.begin(); i!=children.end(); ++i)
411 (*i)->widget->autosize();
413 vector<unsigned> widths;
414 List *list = static_cast<List *>(parent);
415 for(vector<Item *>::const_iterator i=list->items.begin(); i!=list->items.end(); ++i)
417 if(MultiColumnItem *mci = dynamic_cast<MultiColumnItem *>(*i))
418 mci->check_widths(widths);
420 vector<unsigned> self_widths(widths);
421 check_widths(self_widths);
422 bool update_all = false;
423 for(unsigned i=0; (!update_all && i<widths.size() && i<self_widths.size()); ++i)
424 update_all = self_widths[i]>widths[i];
428 for(vector<Item *>::const_iterator i=list->items.begin(); i!=list->items.end(); ++i)
429 if(MultiColumnItem *mci = dynamic_cast<MultiColumnItem *>(*i))
430 mci->set_widths(self_widths);
433 set_widths(self_widths);
437 List::BasicItem::BasicItem(const string &text):
443 void List::BasicItem::on_style_change()
449 if(const Part *part = style->get_part("children"))
451 const Sides &margin = part->get_margin();
452 label.set_position(margin.left, margin.bottom);
457 List::Loader::Loader(List &l):
458 DataFile::DerivedObjectLoader<List, Widget::Loader>(l)
460 add("item", &Loader::item);
461 add("view_size", &List::view_size);
464 void List::Loader::item(const string &v)
466 dynamic_cast<BasicListData<string> &>(*obj.data).append(v);