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):
43 ignore_slider_change = false;
45 observer = new DataObserver(*this);
49 slider.signal_value_changed.connect(sigc::mem_fun(this, &List::slider_value_changed));
60 void List::autosize_special(const Part &part, Geometry &ageom) const
62 if(part.get_name()=="items")
64 const Sides &margin = part.get_margin();
68 for(unsigned i=0; i<items.size(); ++i)
71 items[i]->autosize(igeom);
72 max_w = max(max_w, igeom.w);
73 if(view_size==0 || i<view_size)
77 if(!items.empty() && items.size()<view_size)
78 total_h = total_h*view_size/items.size();
80 ageom.w = max(ageom.w, max_w+margin.left+margin.right);
81 ageom.h = max(ageom.h, total_h+margin.top+margin.bottom);
83 else if(part.get_name()=="slider")
84 autosize_child(slider, part, ageom);
87 void List::set_data(ListData &d)
90 item_factory->set_data(d);
98 observer = new DataObserver(*this);
100 for(vector<Item *>::iterator i=items.begin(); i!=items.end(); ++i)
103 unsigned n_items = data->size();
104 for(unsigned i=0; i<n_items; ++i)
106 Item *item = create_item(i);
107 items.push_back(item);
113 void List::items_changed()
115 signal_autosize_changed.emit();
119 List::Item *List::create_item(unsigned index)
123 item = item_factory->create_item(index);
125 item = new BasicItem(data->get_string(index));
126 if(static_cast<int>(index)==sel_index)
127 item->set_active(true);
130 item->signal_autosize_changed.connect(sigc::bind(sigc::mem_fun(this, &List::item_autosize_changed), item));
134 void List::set_view_size(unsigned s)
137 signal_autosize_changed.emit();
140 void List::set_view_all()
145 void List::set_selected_index(int i)
147 if(i>=static_cast<int>(data->size()))
148 throw out_of_range("List::set_selected_index");
154 items[sel_index]->set_active(false);
160 items[sel_index]->set_active(true);
161 signal_item_selected.emit(sel_index);
165 void List::rebuild_special(const Part &part)
167 if(part.get_name()=="slider")
168 reposition_child(slider, part);
169 else if(part.get_name()=="items")
171 SetFlag flag(ignore_slider_change);
174 const Sides &margin = part.get_margin();
175 unsigned w = geom.w-min(geom.w, margin.left+margin.right);
176 unsigned y = geom.h-min(geom.h, margin.top);
177 for(unsigned i=0; i<items.size(); ++i)
180 items[i]->set_visible(false);
183 Geometry igeom = items[i]->get_geometry();
184 if(igeom.h+margin.bottom<=y)
186 items[i]->set_visible(true);
188 igeom.x = margin.left;
191 items[i]->set_geometry(igeom);
195 items[i]->set_visible(false);
202 Widget::rebuild_special(part);
205 void List::render_special(const Part &part, GL::Renderer &renderer) const
207 if(part.get_name()=="items")
209 for(unsigned i=first; (i<items.size() && items[i]->is_visible()); ++i)
210 items[i]->render(renderer);
212 else if(part.get_name()=="slider")
213 slider.render(renderer);
216 void List::button_press(int x, int y, unsigned btn)
218 Container::button_press(x, y, btn);
219 if(click_focus && btn==1)
221 for(unsigned i=first; (i<items.size() && items[i]->is_visible()); ++i)
222 if(click_focus==items[i])
224 set_selected_index(i);
230 void List::item_autosize_changed(Item *item)
233 signal_autosize_changed.emit();
237 void List::check_view_range()
243 if(const Part *items_part = style->get_part("items"))
245 const Sides &margin = items_part->get_margin();
246 h -= margin.top+margin.bottom;
249 max_scroll = items.size();
250 for(unsigned i=items.size(); i-->0; )
252 unsigned ih = items[i]->get_geometry().h;
263 slider.set_range(0, max_scroll);
264 slider.set_value(max_scroll-first);
267 void List::slider_value_changed(double value)
269 if(max_scroll>0 && !ignore_slider_change)
271 first = max_scroll-static_cast<unsigned>(value);
277 List::DataObserver::DataObserver(List &l):
280 list.data->signal_item_added.connect(sigc::mem_fun(this, &DataObserver::item_added));
281 list.data->signal_item_removed.connect(sigc::mem_fun(this, &DataObserver::item_removed));
282 list.data->signal_cleared.connect(sigc::mem_fun(this, &DataObserver::cleared));
283 list.data->signal_refresh_item.connect(sigc::mem_fun(this, &DataObserver::refresh_item));
286 void List::DataObserver::item_added(unsigned i)
288 if(list.sel_index>=static_cast<int>(i))
291 Item *item = list.create_item(i);
292 list.items.insert(list.items.begin()+i, item);
293 list.items_changed();
296 void List::DataObserver::item_removed(unsigned i)
298 if(list.sel_index>static_cast<int>(i))
300 else if(list.sel_index==static_cast<int>(i))
303 delete list.items[i];
304 list.items.erase(list.items.begin()+i);
305 list.items_changed();
308 void List::DataObserver::cleared()
311 for(vector<Item *>::iterator i=list.items.begin(); i!=list.items.end(); ++i)
314 list.items_changed();
317 void List::DataObserver::refresh_item(unsigned i)
319 delete list.items[i];
320 // Avoid stale pointer while create_item is executing
322 list.items[i] = list.create_item(i);
323 list.items_changed();
327 void List::Item::autosize_special(const Part &part, Geometry &ageom) const
329 if(part.get_name()=="children")
331 const Sides &margin = part.get_margin();
332 for(list<Child *>::const_iterator i=children.begin(); i!=children.end(); ++i)
335 (*i)->widget->autosize(cgeom);
336 ageom.w = max(ageom.w, cgeom.x+cgeom.w+margin.right);
337 ageom.h = max(ageom.h, cgeom.y+cgeom.h+margin.top);
342 void List::Item::set_active(bool a)
344 set_state(ACTIVE, (a ? ACTIVE : NORMAL));
347 void List::Item::render_special(const Part &part, GL::Renderer &renderer) const
349 if(part.get_name()=="children")
351 for(list<Child *>::const_iterator i=children.begin(); i!=children.end(); ++i)
352 (*i)->widget->render(renderer);
357 void List::MultiColumnItem::check_widths(vector<unsigned> &widths) const
359 if(widths.size()<children.size())
360 widths.resize(children.size(), 0);
363 for(list<Child *>::const_iterator i=children.begin(); i!=children.end(); ++i, ++n)
366 (*i)->widget->autosize(cgeom);
367 // TODO invent a better way to specify spacings
368 widths[n] = max(widths[n], cgeom.w+8);
372 void List::MultiColumnItem::set_widths(const vector<unsigned> &widths)
377 const Part *part = style->get_part("children");
381 const Sides &margin = part->get_margin();
384 for(list<Child *>::const_iterator i=children.begin(); i!=children.end(); ++i, ++n)
386 (*i)->widget->set_position(x, margin.bottom);
391 void List::MultiColumnItem::on_style_change()
396 for(std::list<Child *>::const_iterator i=children.begin(); i!=children.end(); ++i)
397 (*i)->widget->autosize();
399 vector<unsigned> widths;
400 List *list = static_cast<List *>(parent);
401 for(vector<Item *>::const_iterator i=list->items.begin(); i!=list->items.end(); ++i)
403 if(MultiColumnItem *mci = dynamic_cast<MultiColumnItem *>(*i))
404 mci->check_widths(widths);
406 vector<unsigned> self_widths(widths);
407 check_widths(self_widths);
408 bool update_all = false;
409 for(unsigned i=0; (!update_all && i<widths.size() && i<self_widths.size()); ++i)
410 update_all = self_widths[i]>widths[i];
414 for(vector<Item *>::const_iterator i=list->items.begin(); i!=list->items.end(); ++i)
415 if(MultiColumnItem *mci = dynamic_cast<MultiColumnItem *>(*i))
416 mci->set_widths(self_widths);
419 set_widths(self_widths);
423 List::BasicItem::BasicItem(const string &text):
429 void List::BasicItem::on_style_change()
435 if(const Part *part = style->get_part("children"))
437 const Sides &margin = part->get_margin();
438 label.set_position(margin.left, margin.bottom);
443 List::Loader::Loader(List &l):
444 DataFile::DerivedObjectLoader<List, Widget::Loader>(l)
446 add("item", &Loader::item);
447 add("view_size", &List::view_size);
450 void List::Loader::item(const string &v)
452 dynamic_cast<BasicListData<string> &>(*obj.data).append(v);