3 This file is part of libmspgltk
4 Copyright © 2007 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>
22 List::List(const Resources &r):
28 slider(new VSlider(res)),
32 slider->signal_value_changed.connect(sigc::mem_fun(this, &List::slider_value_changed));
42 void List::append(const string &v)
45 recalculate_parameters();
48 void List::insert(unsigned i, const string &v)
51 throw InvalidParameterValue("Index out of range");
53 items.insert(items.begin()+i, v);
54 recalculate_parameters();
57 void List::remove(unsigned i)
60 throw InvalidParameterValue("Index out of range");
62 items.erase(items.begin()+i);
63 if(sel_index>static_cast<int>(i))
65 else if(sel_index==static_cast<int>(i))
68 recalculate_parameters();
76 recalculate_parameters();
79 void List::set_selected_index(int i)
83 else if(i<static_cast<int>(items.size()))
86 signal_item_selected.emit(sel_index, items[sel_index]);
89 throw InvalidParameterValue("Index out of range");
92 const string &List::get_selected() const
95 throw InvalidState("No selection");
97 return items[sel_index];
100 void List::button_press(int x, int y, unsigned btn)
102 if(slider->get_geometry().is_inside(x, y))
104 const Geometry &sgeom=slider->get_geometry();
105 slider->button_press(x-sgeom.x, y-sgeom.y, btn);
110 const GL::Font *const font=style->get_font();
111 const unsigned row_height=static_cast<unsigned>(font->get_default_size());
114 y+=items_part->get_margin().top;
116 unsigned i=(geom.h-1-y)/row_height;
117 if(i<n_visible && first+i<items.size())
121 signal_item_selected.emit(sel_index, items[sel_index]);
126 void List::button_release(int x, int y, unsigned btn)
130 const Geometry &sgeom=slider->get_geometry();
131 slider->button_release(x-sgeom.x, y-sgeom.y, btn);
136 void List::pointer_motion(int x, int y)
140 const Geometry &sgeom=slider->get_geometry();
141 slider->pointer_motion(x-sgeom.x, y-sgeom.y);
145 void List::render_special(const Part &part) const
147 if(part.get_name()=="items")
149 const GL::Font *const font=style->get_font();
150 const float font_size=font->get_default_size();
151 const GL::Color &color=style->get_font_color();
152 const unsigned row_height=static_cast<unsigned>(font_size);
153 const Sides &margin=part.get_margin();
157 pgeom.w-=margin.left+margin.right;
159 for(unsigned i=0; (i<n_visible && first+i<items.size()); ++i)
162 rgeom.w=static_cast<unsigned>(font->get_string_width(items[first+i])*font_size);
163 rgeom.h=static_cast<unsigned>((font->get_ascent()-font->get_descent())*font_size);
165 rgeom.y=geom.h-margin.top-(i+1)*row_height-static_cast<int>(font->get_descent()*font_size);
166 part.get_alignment().apply(rgeom, pgeom);
169 GL::translate(rgeom.x, rgeom.y, 0);
170 GL::scale_uniform(font_size);
171 GL::Immediate imm((GL::COLOR4_UBYTE, GL::TEXCOORD2, GL::VERTEX2));
172 imm.color(color.r, color.g, color.b);
173 font->draw_string(items[first+i], imm);
177 else if(part.get_name()=="selection")
179 if(sel_index>=static_cast<int>(first) && sel_index<static_cast<int>(first+n_visible))
181 const GL::Font *const font=style->get_font();
182 const float font_size=font->get_default_size();
183 const unsigned row_height=static_cast<unsigned>(font_size);
184 const Sides &margin=part.get_margin();
188 pgeom.w-=margin.left+margin.right;
190 Geometry rgeom=part.get_geometry();
191 rgeom.y+=geom.h-margin.top-row_height*(sel_index-first+1);
192 rgeom.x+=margin.left;
193 part.get_alignment().apply(rgeom, pgeom);
196 GL::translate(rgeom.x, rgeom.y, 0);
197 part.get_graphic(state)->render(rgeom.w, rgeom.h);
201 else if(part.get_name()=="slider")
205 void List::on_geometry_change()
209 recalculate_parameters();
212 void List::on_style_change()
217 for(list<Part>::const_iterator i=style->get_parts().begin(); i!=style->get_parts().end(); ++i)
218 if(i->get_name()=="items")
221 recalculate_parameters();
224 void List::reposition_slider()
226 for(list<Part>::const_iterator i=style->get_parts().begin(); i!=style->get_parts().end(); ++i)
227 if(i->get_name()=="slider")
229 Geometry sgeom=i->get_geometry();
230 i->get_alignment().apply(sgeom, geom, i->get_margin());
231 slider->set_geometry(sgeom);
235 void List::recalculate_parameters()
237 const GL::Font *font=style->get_font();
238 unsigned row_height=static_cast<unsigned>(font->get_default_size());
243 const Sides &margin=items_part->get_margin();
244 h-=margin.top+margin.bottom;
247 n_visible=h/row_height;
249 if(first+n_visible>items.size())
251 if(items.size()>n_visible)
252 first=items.size()-n_visible;
257 if(items.size()>n_visible)
259 slider->set_range(0, items.size()-n_visible);
260 slider->set_value(items.size()-n_visible-first);
264 slider->set_range(0, 0);
265 slider->set_value(0);
269 void List::slider_value_changed(double value)
271 if(items.size()>n_visible)
272 first=items.size()-n_visible-static_cast<unsigned>(value);
276 List::Loader::Loader(List &l):
279 add("item", &Loader::item);
282 void List::Loader::item(const string &v)
284 static_cast<List &>(wdg).append(v);