-/* $Id$
-
-This file is part of libmspgltk
-Copyright © 2007-2009 Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
-#include <msp/gl/immediate.h>
+#include <msp/core/raii.h>
+#include <msp/debug/demangle.h>
#include <msp/gl/matrix.h>
-#include <msp/gl/transform.h>
+#include <msp/gl/meshbuilder.h>
#include "graphic.h"
#include "list.h"
#include "part.h"
namespace Msp {
namespace GLtk {
-List::List(const Resources &r):
- Widget(r),
- Container(r),
- sel_index(-1),
- first(0),
- n_visible(1),
- row_height(1),
- items_part(0),
- slider(res)
+incompatible_data::incompatible_data(const type_info &ti):
+ logic_error("expected "+Debug::demangle(ti.name()))
+{ }
+
+
+List::List():
+ data(new BasicListData<string>),
+ own_data(true)
+{
+ init();
+}
+
+List::List(ListData &d):
+ data(&d),
+ own_data(false)
+{
+ init();
+}
+
+void List::init()
{
+ input_type = INPUT_NAVIGATION;
+
+ item_factory = 0;
+ sel_index = -1;
+ focus_index = -1;
+ first = 0;
+ max_scroll = 0;
+ view_size = 5;
+ ignore_slider_change = false;
+
+ observer = new DataObserver(*this);
+
add(slider);
slider.set_step(1);
slider.signal_value_changed.connect(sigc::mem_fun(this, &List::slider_value_changed));
-
- update_style();
}
-void List::autosize()
+List::~List()
{
- float font_size = style->get_font()->get_default_size();
+ delete item_factory;
+ delete observer;
+ if(own_data)
+ delete data;
+}
- geom.w = 0;
- for(vector<string>::iterator i=items.begin(); i!=items.end(); ++i)
+void List::autosize_special(const Part &part, Geometry &ageom) const
+{
+ if(part.get_name()=="items")
{
- unsigned w = static_cast<unsigned>(style->get_font()->get_string_width(*i)*font_size);
- geom.w = max(geom.w, w);
+ const Sides &margin = part.get_margin();
+
+ unsigned max_w = 0;
+ unsigned total_h = 0;
+ for(unsigned i=0; i<items.size(); ++i)
+ {
+ Geometry igeom;
+ items[i]->autosize(igeom);
+ max_w = max(max_w, igeom.w);
+ if(view_size==0 || i<view_size)
+ total_h += igeom.h;
+ }
+
+ if(!items.empty() && items.size()<view_size)
+ total_h = total_h*view_size/items.size();
+
+ ageom.w = max(ageom.w, max_w+margin.left+margin.right);
+ ageom.h = max(ageom.h, total_h+margin.top+margin.bottom);
}
+ else if(part.get_name()=="slider")
+ autosize_child(slider, part, ageom);
+}
+
+void List::set_data(ListData &d)
+{
+ if(item_factory)
+ item_factory->set_data(d);
- geom.h = items.size()*row_height;
+ delete observer;
+ if(own_data)
+ delete data;
- if(items_part)
+ data = &d;
+ own_data = false;
+ observer = new DataObserver(*this);
+
+ for(vector<Item *>::iterator i=items.begin(); i!=items.end(); ++i)
+ delete *i;
+ items.clear();
+ unsigned n_items = data->size();
+ for(unsigned i=0; i<n_items; ++i)
{
- const Sides &margin = items_part->get_margin();
- geom.w += margin.left+margin.right;
- geom.h += margin.top+margin.bottom;
+ Item *item = create_item(i);
+ items.push_back(item);
}
+
+ items_changed();
}
-void List::append(const string &v)
+void List::items_changed()
{
- items.push_back(v);
- check_view_range();
+ signal_autosize_changed.emit();
+ rebuild();
}
-void List::insert(unsigned i, const string &v)
+List::Item *List::create_item(unsigned index)
{
- if(i>items.size())
- throw InvalidParameterValue("Index out of range");
-
- items.insert(items.begin()+i, v);
- check_view_range();
+ Item *item = 0;
+ if(item_factory)
+ item = item_factory->create_item(index);
+ else
+ item = new BasicItem(data->get_string(index));
+ if(static_cast<int>(index)==sel_index)
+ item->set_active(true);
+ add(*item);
+ item->autosize();
+ item->signal_autosize_changed.connect(sigc::bind(sigc::mem_fun(this, &List::item_autosize_changed), item));
+ return item;
}
-void List::remove(unsigned i)
+void List::set_view_size(unsigned s)
{
- if(i>items.size())
- throw InvalidParameterValue("Index out of range");
-
- items.erase(items.begin()+i);
- if(sel_index>static_cast<int>(i))
- --sel_index;
- else if(sel_index==static_cast<int>(i))
- sel_index = -1;
-
- check_view_range();
+ view_size = s;
+ signal_autosize_changed.emit();
}
-void List::clear()
+void List::set_view_all()
{
- items.clear();
- sel_index = -1;
-
- check_view_range();
+ set_view_size(0);
}
void List::set_selected_index(int i)
{
+ if(i>=static_cast<int>(data->size()))
+ throw out_of_range("List::set_selected_index");
+
+ if(i==sel_index || (i<0 && sel_index<0))
+ return;
+
+ if(sel_index>=0)
+ items[sel_index]->set_active(false);
if(i<0)
+ {
sel_index = -1;
- else if(i<static_cast<int>(items.size()))
+ focus_index = -1;
+ set_input_focus(0);
+ signal_selection_cleared.emit();
+ }
+ else
{
sel_index = i;
- signal_item_selected.emit(sel_index, items[sel_index]);
+ focus_index = i;
+ items[sel_index]->set_active(true);
+ if(state&FOCUS)
+ set_input_focus(items[focus_index]);
+ signal_item_selected.emit(sel_index);
}
- else
- throw InvalidParameterValue("Index out of range");
}
-const string &List::get_selected() const
+void List::rebuild_special(const Part &part)
{
- if(sel_index<0)
- throw InvalidState("No selection");
+ if(part.get_name()=="slider")
+ reposition_child(slider, part);
+ else if(part.get_name()=="items")
+ {
+ SetFlag flag(ignore_slider_change);
+ check_view_range();
+
+ const Sides &margin = part.get_margin();
+ unsigned w = geom.w-min(geom.w, margin.left+margin.right);
+ unsigned y = geom.h-min(geom.h, margin.top);
+ for(unsigned i=0; i<items.size(); ++i)
+ {
+ if(i<first || !y)
+ items[i]->set_visible(false);
+ else
+ {
+ Geometry igeom = items[i]->get_geometry();
+ if(igeom.h+margin.bottom<=y)
+ {
+ items[i]->set_visible(true);
+ y -= igeom.h;
+ igeom.x = margin.left;
+ igeom.y = y;
+ igeom.w = w;
+ items[i]->set_geometry(igeom);
+ }
+ else
+ {
+ items[i]->set_visible(false);
+ y = 0;
+ }
+ }
+ }
+ }
- return items[sel_index];
+ Widget::rebuild_special(part);
}
-void List::button_press(int x, int y, unsigned btn)
+void List::render_special(const Part &part, GL::Renderer &renderer) const
{
- Container::button_press(x, y, btn);
- if(!click_focus && btn==1)
+ if(part.get_name()=="items")
{
- if(items_part)
- y += items_part->get_margin().top;
+ for(unsigned i=first; (i<items.size() && items[i]->is_visible()); ++i)
+ items[i]->render(renderer);
+ }
+ else if(part.get_name()=="slider")
+ slider.render(renderer);
+}
- unsigned i = (geom.h-1-y)/row_height;
- if(i<n_visible && first+i<items.size())
+void List::button_press(int x, int y, unsigned btn)
+{
+ if(btn==4 || btn==5)
+ {
+ unsigned change = 3;
+ if(btn==4)
{
- sel_index = first+i;
-
- signal_item_selected.emit(sel_index, items[sel_index]);
+ change = min(first, change);
+ slider.set_value(max_scroll-(first-change));
+ }
+ else if(btn==5)
+ {
+ change = min(max_scroll-first, change);
+ slider.set_value(max_scroll-(first+change));
+ }
+ }
+ else
+ {
+ Container::button_press(x, y, btn);
+ if(click_focus && btn==1)
+ {
+ for(unsigned i=first; (i<items.size() && items[i]->is_visible()); ++i)
+ if(click_focus==items[i])
+ {
+ set_selected_index(i);
+ break;
+ }
}
}
}
-void List::render_special(const Part &part) const
+void List::focus_in()
{
- if(part.get_name()=="items")
+ if(focus_index>=0 && items[focus_index]->is_visible())
+ set_input_focus(items[focus_index]);
+ else
{
- const Sides &margin = part.get_margin();
- Geometry pgeom = geom;
- pgeom.h = row_height+margin.top+margin.bottom;
+ if(sel_index>=0 && items[sel_index]->is_visible())
+ set_focus_index(sel_index);
+ else if(!items.empty())
+ set_focus_index(first);
+ }
+}
- GL::PushMatrix push_mtx;
- GL::translate(0, geom.h-pgeom.h, 0);
+bool List::navigate(Navigation nav)
+{
+ if(nav==NAV_UP && !items.empty())
+ {
+ if(focus_index>0)
+ set_focus_index(focus_index-1);
+ }
+ else if(nav==NAV_DOWN && !items.empty())
+ {
+ if(static_cast<unsigned>(focus_index+1)<items.size())
+ set_focus_index(focus_index+1);
+ }
+ else if(nav==NAV_ACTIVATE)
+ set_selected_index(focus_index);
+ else
+ return false;
- for(unsigned i=0; (i<n_visible && first+i<items.size()); ++i)
- {
- if(i!=0)
- GL::translate(0, -static_cast<int>(row_height), 0);
- Text(*style, items[first+i]).render(part, pgeom);
- }
+ return true;
+}
+
+void List::set_focus_index(int i)
+{
+ focus_index = i;
+ if(focus_index>=0)
+ {
+ scroll_to_focus();
+ if(state&FOCUS)
+ set_input_focus(items[focus_index]);
}
- else if(part.get_name()=="selection")
+}
+
+void List::item_autosize_changed(Item *item)
+{
+ item->autosize();
+ signal_autosize_changed.emit();
+ rebuild();
+}
+
+unsigned List::last_to_first(unsigned last) const
+{
+ if(!style)
+ return last;
+
+ unsigned view_h = geom.h;
+ if(const Part *items_part = style->get_part("items"))
{
- if(sel_index>=static_cast<int>(first) && sel_index<static_cast<int>(first+n_visible))
- {
- const Sides &margin = part.get_margin();
+ const Sides &margin = items_part->get_margin();
+ view_h -= margin.top+margin.bottom;
+ }
- Geometry pgeom = geom;
- pgeom.h = row_height;
- pgeom.w -= margin.left+margin.right;
+ unsigned items_h = 0;
+ for(unsigned i=last; i<items.size(); --i)
+ {
+ items_h += items[i]->get_geometry().h;
+ if(items_h>view_h)
+ return min(i+1, last);
+ }
- Geometry rgeom = part.get_geometry();
- rgeom.y += geom.h-margin.top-row_height*(sel_index-first+1);
- rgeom.x += margin.left;
- part.get_alignment().apply(rgeom, pgeom);
+ return 0;
+}
- GL::push_matrix();
- GL::translate(rgeom.x, rgeom.y, 0);
- part.get_graphic(state)->render(rgeom.w, rgeom.h);
- GL::pop_matrix();
- }
+void List::check_view_range()
+{
+ if(!style)
+ return;
+
+ if(items.empty())
+ max_scroll = 0;
+ else
+ max_scroll = last_to_first(items.size()-1);
+
+ if(first>max_scroll)
+ first = max_scroll;
+
+ slider.set_range(0, max_scroll);
+ slider.set_value(max_scroll-first);
+}
+
+void List::scroll_to_focus()
+{
+ if(focus_index<0 || items[focus_index]->is_visible())
+ return;
+
+ if(static_cast<unsigned>(focus_index)<first)
+ slider.set_value(max_scroll-focus_index);
+ else
+ slider.set_value(max_scroll-last_to_first(focus_index));
+}
+
+void List::slider_value_changed(double value)
+{
+ if(max_scroll>0 && !ignore_slider_change)
+ {
+ first = max_scroll-static_cast<unsigned>(value);
+ rebuild();
}
- else if(part.get_name()=="slider")
- slider.render();
}
-void List::on_geometry_change()
+void List::adjust_index(int &index, int pos, int change)
+{
+ if(index>pos)
+ index += change;
+ else if(index==pos)
+ index = (change>0 ? index+change : -1);
+}
+
+
+List::DataObserver::DataObserver(List &l):
+ list(l)
+{
+ list.data->signal_item_added.connect(sigc::mem_fun(this, &DataObserver::item_added));
+ list.data->signal_item_removed.connect(sigc::mem_fun(this, &DataObserver::item_removed));
+ list.data->signal_cleared.connect(sigc::mem_fun(this, &DataObserver::cleared));
+ list.data->signal_refresh_item.connect(sigc::mem_fun(this, &DataObserver::refresh_item));
+}
+
+void List::DataObserver::item_added(unsigned i)
{
- reposition_slider();
+ adjust_index(list.sel_index, i, 1);
+ adjust_index(list.focus_index, i, 1);
- check_view_range();
+ Item *item = list.create_item(i);
+ list.items.insert(list.items.begin()+i, item);
+ list.items_changed();
}
-void List::on_style_change()
+void List::DataObserver::item_removed(unsigned i)
{
- reposition_slider();
+ bool had_selection = (list.sel_index>=0);
+ adjust_index(list.sel_index, i, -1);
+ adjust_index(list.focus_index, i, -1);
- items_part = style->get_part("items");
+ delete list.items[i];
+ list.items.erase(list.items.begin()+i);
+ list.items_changed();
- const GL::Font &font = *style->get_font();
- row_height = static_cast<unsigned>((font.get_ascent()-font.get_descent())*font.get_default_size());
+ if(had_selection && list.sel_index<0)
+ list.signal_selection_cleared.emit();
+}
- check_view_range();
+void List::DataObserver::cleared()
+{
+ list.sel_index = -1;
+ list.focus_index = -1;
+ for(vector<Item *>::iterator i=list.items.begin(); i!=list.items.end(); ++i)
+ delete *i;
+ list.items.clear();
+ list.items_changed();
+
+ list.signal_selection_cleared.emit();
+}
+
+void List::DataObserver::refresh_item(unsigned i)
+{
+ delete list.items[i];
+ // Avoid stale pointer while create_item is executing
+ list.items[i] = 0;
+ list.items[i] = list.create_item(i);
+ list.items_changed();
}
-void List::reposition_slider()
+
+void List::Item::autosize_special(const Part &part, Geometry &ageom) const
{
- if(const Part *slider_part = style->get_part("slider"))
+ if(part.get_name()=="children")
{
- Geometry sgeom = slider_part->get_geometry();
- slider_part->get_alignment().apply(sgeom, geom, slider_part->get_margin());
- slider.set_geometry(sgeom);
+ const Sides &margin = part.get_margin();
+ for(list<Child *>::const_iterator i=children.begin(); i!=children.end(); ++i)
+ {
+ Geometry cgeom;
+ (*i)->widget->autosize(cgeom);
+ ageom.w = max(ageom.w, cgeom.x+cgeom.w+margin.right);
+ ageom.h = max(ageom.h, cgeom.y+cgeom.h+margin.top);
+ }
}
}
-void List::check_view_range()
+void List::Item::set_active(bool a)
{
- unsigned h = geom.h;
- if(items_part)
+ set_state(ACTIVE, (a ? ACTIVE : NORMAL));
+}
+
+void List::Item::render_special(const Part &part, GL::Renderer &renderer) const
+{
+ if(part.get_name()=="children")
{
- const Sides &margin = items_part->get_margin();
- h -= margin.top+margin.bottom;
+ for(list<Child *>::const_iterator i=children.begin(); i!=children.end(); ++i)
+ (*i)->widget->render(renderer);
}
+}
- n_visible = h/row_height;
- if(first+n_visible>items.size())
+void List::MultiColumnItem::check_widths(vector<unsigned> &widths) const
+{
+ if(widths.size()<children.size())
+ widths.resize(children.size(), 0);
+
+ unsigned n = 0;
+ for(list<Child *>::const_iterator i=children.begin(); i!=children.end(); ++i, ++n)
{
- if(items.size()>n_visible)
- first = items.size()-n_visible;
- else
- first = 0;
+ Geometry cgeom;
+ (*i)->widget->autosize(cgeom);
+ // TODO invent a better way to specify spacings
+ widths[n] = max(widths[n], cgeom.w+8);
}
+}
+
+void List::MultiColumnItem::set_widths(const vector<unsigned> &widths)
+{
+ if(!style)
+ return;
- if(items.size()>n_visible)
+ const Part *part = style->get_part("children");
+ if(!part)
+ return;
+
+ const Sides &margin = part->get_margin();
+ int x = margin.left;
+ unsigned n = 0;
+ for(list<Child *>::const_iterator i=children.begin(); i!=children.end(); ++i, ++n)
{
- slider.set_range(0, items.size()-n_visible);
- slider.set_value(items.size()-n_visible-first);
+ (*i)->widget->set_position(x, margin.bottom);
+ x += widths[n];
}
- else
+}
+
+void List::MultiColumnItem::on_style_change()
+{
+ if(!style)
+ return;
+
+ for(std::list<Child *>::const_iterator i=children.begin(); i!=children.end(); ++i)
+ (*i)->widget->autosize();
+
+ vector<unsigned> widths;
+ List *list = static_cast<List *>(parent);
+ for(vector<Item *>::const_iterator i=list->items.begin(); i!=list->items.end(); ++i)
+ if(*i!=this)
+ if(MultiColumnItem *mci = dynamic_cast<MultiColumnItem *>(*i))
+ mci->check_widths(widths);
+
+ vector<unsigned> self_widths(widths);
+ check_widths(self_widths);
+ bool update_all = false;
+ for(unsigned i=0; (!update_all && i<widths.size() && i<self_widths.size()); ++i)
+ update_all = self_widths[i]>widths[i];
+
+ if(update_all)
{
- slider.set_range(0, 0);
- slider.set_value(0);
+ for(vector<Item *>::const_iterator i=list->items.begin(); i!=list->items.end(); ++i)
+ if(MultiColumnItem *mci = dynamic_cast<MultiColumnItem *>(*i))
+ mci->set_widths(self_widths);
}
+
+ set_widths(self_widths);
}
-void List::slider_value_changed(double value)
+
+List::BasicItem::BasicItem(const string &text):
+ label(text)
{
- if(items.size()>n_visible)
- first = items.size()-n_visible-static_cast<unsigned>(value);
+ add(label);
+}
+
+void List::BasicItem::on_style_change()
+{
+ if(!style)
+ return;
+
+ label.autosize();
+ if(const Part *part = style->get_part("children"))
+ {
+ const Sides &margin = part->get_margin();
+ label.set_position(margin.left, margin.bottom);
+ }
}
List::Loader::Loader(List &l):
- Widget::Loader(l)
+ DataFile::DerivedObjectLoader<List, Widget::Loader>(l)
{
add("item", &Loader::item);
+ add("view_size", &List::view_size);
}
void List::Loader::item(const string &v)
{
- dynamic_cast<List &>(wdg).append(v);
+ dynamic_cast<BasicListData<string> &>(*obj.data).append(v);
}
} // namespace GLtk
projects / libs / gltk.git / blobdiff