3 This file is part of libmspgltk
4 Copyright © 2007 Mikko Rasa, Mikkosoft Productions
5 Distributed under the LGPL
8 #include <msp/gl/matrix.h>
9 #include <msp/gl/transform.h>
21 List::List(const Resources &r):
27 slider(new VSlider(res)),
31 slider->signal_value_changed.connect(sigc::mem_fun(this, &List::slider_value_changed));
36 void List::append(const string &v)
39 recalculate_parameters();
42 void List::insert(unsigned i, const string &v)
45 throw InvalidParameterValue("Index out of range");
47 items.insert(items.begin()+i, v);
48 recalculate_parameters();
51 void List::remove(unsigned i)
54 throw InvalidParameterValue("Index out of range");
56 items.erase(items.begin()+i);
57 if(sel_index>static_cast<int>(i))
59 else if(sel_index==static_cast<int>(i))
62 recalculate_parameters();
71 const string &List::get_selected() const
74 throw InvalidState("No selection");
76 return items[sel_index];
79 void List::button_press(int x, int y, unsigned btn)
81 if(slider->get_geometry().is_inside(x, y))
83 const Geometry &sgeom=slider->get_geometry();
84 slider->button_press(x-sgeom.x, y-sgeom.y, btn);
89 const GL::Font *const font=style->get_font();
90 const unsigned row_height=static_cast<unsigned>(font->get_default_size());
93 y+=items_part->get_margin().top;
95 unsigned i=(geom.h-1-y)/row_height;
100 signal_item_selected.emit(sel_index, items[sel_index]);
105 void List::button_release(int x, int y, unsigned btn)
109 const Geometry &sgeom=slider->get_geometry();
110 slider->button_release(x-sgeom.x, y-sgeom.y, btn);
115 void List::pointer_motion(int x, int y)
119 const Geometry &sgeom=slider->get_geometry();
120 slider->pointer_motion(x-sgeom.x, y-sgeom.y);
124 void List::render_special(const Part &part) const
126 if(part.get_name()=="items")
128 const GL::Font *const font=style->get_font();
129 const float font_size=font->get_default_size();
130 const unsigned row_height=static_cast<unsigned>(font_size);
131 const Sides &margin=part.get_margin();
136 for(unsigned i=0; (i<n_visible && first+i<items.size()); ++i)
139 rgeom.w=static_cast<unsigned>(font->get_string_width(items[first+i])*font_size);
140 rgeom.h=static_cast<unsigned>((font->get_ascent()-font->get_descent())*font_size);
141 rgeom.y=geom.h-margin.top-(i+1)*row_height-static_cast<int>(font->get_descent()*font_size);
142 part.get_alignment().apply(rgeom, pgeom);
145 GL::translate(rgeom.x, rgeom.y, 0);
146 GL::scale_uniform(font_size);
147 font->draw_string(items[first+i]);
151 else if(part.get_name()=="selection")
153 if(sel_index>=static_cast<int>(first) && sel_index<static_cast<int>(first+n_visible))
155 const GL::Font *const font=style->get_font();
156 const float font_size=font->get_default_size();
157 const unsigned row_height=static_cast<unsigned>(font_size);
158 const Sides &margin=part.get_margin();
162 pgeom.w-=margin.left+margin.right;
164 Geometry rgeom=part.get_geometry();
165 rgeom.y+=geom.h-margin.top-row_height*(sel_index-first+1);
166 rgeom.x+=margin.left;
167 part.get_alignment().apply(rgeom, pgeom);
170 GL::translate(rgeom.x, rgeom.y, 0);
171 part.get_graphic(state)->render(rgeom.w, rgeom.h);
175 else if(part.get_name()=="slider")
179 void List::on_geometry_change()
183 recalculate_parameters();
186 void List::on_style_change()
191 for(list<Part>::const_iterator i=style->get_parts().begin(); i!=style->get_parts().end(); ++i)
192 if(i->get_name()=="items")
195 recalculate_parameters();
198 void List::reposition_slider()
200 for(list<Part>::const_iterator i=style->get_parts().begin(); i!=style->get_parts().end(); ++i)
201 if(i->get_name()=="slider")
203 Geometry sgeom=i->get_geometry();
204 i->get_alignment().apply(sgeom, geom, i->get_margin());
205 slider->set_geometry(sgeom);
209 void List::recalculate_parameters()
211 const GL::Font *font=style->get_font();
212 unsigned row_height=static_cast<unsigned>(font->get_default_size());
217 const Sides &margin=items_part->get_margin();
218 h-=margin.top+margin.bottom;
221 n_visible=h/row_height;
223 if(first+n_visible>items.size())
225 if(items.size()>n_visible)
226 first=items.size()-n_visible;
231 if(items.size()>n_visible)
233 slider->set_range(0, items.size()-n_visible);
234 slider->set_value(items.size()-n_visible-first);
238 slider->set_range(0, 0);
239 slider->set_value(0);
243 void List::slider_value_changed(double value)
245 first=items.size()-n_visible-static_cast<unsigned>(value);
249 List::Loader::Loader(List &l):
252 add("item", &Loader::item);
255 void List::Loader::item(const string &v)
257 static_cast<List &>(wdg).append(v);