3 This file is part of libmspgltk
4 Copyright © 2007-2011 Mikko Rasa, Mikkosoft Productions
5 Distributed under the LGPL
8 #include <msp/gl/immediate.h>
9 #include <msp/gl/matrix.h>
10 #include <msp/gl/transform.h>
32 slider.signal_value_changed.connect(sigc::mem_fun(this, &List::slider_value_changed));
40 void List::autosize_rows(unsigned n)
49 const Sides &margin = items_part->get_margin();
50 float font_size = style->get_font()->get_default_size();
53 for(vector<string>::iterator i=items.begin(); i!=items.end(); ++i)
55 unsigned w = static_cast<unsigned>(style->get_font()->get_string_width(*i)*font_size);
56 max_w = max(max_w, w);
59 geom.w = max(geom.w, max_w+margin.left+margin.right);
60 geom.h = max(geom.h, n*row_height+margin.top+margin.bottom);
63 if(const Part *slider_part = style->get_part("slider"))
65 Geometry sgeom = slider_part->get_geometry();
66 if(!sgeom.w || !sgeom.h)
70 sgeom.w = slider.get_geometry().w;
72 sgeom.h = slider.get_geometry().h;
75 const Sides &margin = slider_part->get_margin();
76 geom.w = max(geom.w, sgeom.w+margin.left+margin.right);
77 geom.h = max(geom.h, sgeom.h+margin.top+margin.bottom);
85 void List::autosize_all()
87 autosize_rows(items.size());
90 void List::append(const string &v)
96 void List::insert(unsigned i, const string &v)
99 throw InvalidParameterValue("Index out of range");
101 items.insert(items.begin()+i, v);
105 void List::remove(unsigned i)
108 throw InvalidParameterValue("Index out of range");
110 items.erase(items.begin()+i);
111 if(sel_index>static_cast<int>(i))
113 else if(sel_index==static_cast<int>(i))
127 void List::set_selected_index(int i)
131 else if(i<static_cast<int>(items.size()))
134 signal_item_selected.emit(sel_index, items[sel_index]);
137 throw InvalidParameterValue("Index out of range");
140 const string &List::get_selected() const
143 throw InvalidState("No selection");
145 return items[sel_index];
148 void List::render_special(const Part &part) const
150 if(part.get_name()=="items")
152 const Sides &margin = part.get_margin();
153 Geometry pgeom = geom;
154 pgeom.h = row_height+margin.top+margin.bottom;
156 GL::PushMatrix push_mtx;
157 GL::translate(0, geom.h-pgeom.h, 0);
159 for(unsigned i=0; (i<n_visible && first+i<items.size()); ++i)
162 GL::translate(0, -static_cast<int>(row_height), 0);
163 Text(*style, items[first+i]).render(part, pgeom);
166 else if(part.get_name()=="selection")
168 if(sel_index>=static_cast<int>(first) && sel_index<static_cast<int>(first+n_visible))
170 const Sides &margin = part.get_margin();
172 Geometry pgeom = geom;
173 pgeom.h = row_height;
174 pgeom.w -= margin.left+margin.right;
176 Geometry rgeom = part.get_geometry();
177 rgeom.y += geom.h-margin.top-row_height*(sel_index-first+1);
178 rgeom.x += margin.left;
179 part.get_alignment().apply(rgeom, pgeom);
182 GL::translate(rgeom.x, rgeom.y, 0);
183 part.get_graphic(state)->render(rgeom.w, rgeom.h);
187 else if(part.get_name()=="slider")
191 void List::button_press(int x, int y, unsigned btn)
193 Container::button_press(x, y, btn);
194 if(!click_focus && btn==1)
197 y += items_part->get_margin().top;
199 unsigned i = (geom.h-1-y)/row_height;
200 if(i<n_visible && first+i<items.size())
204 signal_item_selected.emit(sel_index, items[sel_index]);
209 void List::on_geometry_change()
216 void List::on_style_change()
226 items_part = style->get_part("items");
228 const GL::Font &font = *style->get_font();
229 row_height = static_cast<unsigned>((font.get_ascent()-font.get_descent())*font.get_default_size());
234 void List::reposition_slider()
239 if(const Part *slider_part = style->get_part("slider"))
241 Geometry sgeom = slider_part->get_geometry();
242 slider_part->get_alignment().apply(sgeom, geom, slider_part->get_margin());
243 slider.set_geometry(sgeom);
247 void List::check_view_range()
252 const Sides &margin = items_part->get_margin();
253 h -= margin.top+margin.bottom;
256 n_visible = h/row_height;
258 if(first+n_visible>items.size())
260 if(items.size()>n_visible)
261 first = items.size()-n_visible;
266 if(items.size()>n_visible)
268 slider.set_range(0, items.size()-n_visible);
269 slider.set_value(items.size()-n_visible-first);
273 slider.set_range(0, 0);
278 void List::slider_value_changed(double value)
280 if(items.size()>n_visible)
281 first = items.size()-n_visible-static_cast<unsigned>(value);
285 List::Loader::Loader(List &l):
288 add("item", &Loader::item);
291 void List::Loader::item(const string &v)
293 dynamic_cast<List &>(obj).append(v);