-/* $Id$
-
-This file is part of libmspgltk
-Copyright © 2007 Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
#include <msp/gl/matrix.h>
-#include <msp/gl/transform.h>
+#include <msp/gl/meshbuilder.h>
#include "graphic.h"
#include "list.h"
#include "part.h"
#include "style.h"
+#include "text.h"
#include "vslider.h"
using namespace std;
namespace Msp {
namespace GLtk {
-List::List(const Resources &r):
- Widget(r),
- sel_index(-1),
- first(0),
- n_visible(1),
- items_part(0),
- slider(new VSlider(res)),
- slider_active(false)
+List::List():
+ data(new BasicListData<string>),
+ own_data(true)
{
- slider->set_step(1);
- slider->signal_value_changed.connect(sigc::mem_fun(this, &List::slider_value_changed));
+ init();
+}
- update_style();
+List::List(ListData &d):
+ data(&d),
+ own_data(false)
+{
+ init();
}
-List::~List()
+void List::init()
{
- delete slider;
+ sel_index = -1;
+ first = 0;
+ max_scroll = 0;
+ view_size = 5;
+
+ observer = new DataObserver(*this);
+
+ add(slider);
+ slider.set_step(1);
+ slider.signal_value_changed.connect(sigc::mem_fun(this, &List::slider_value_changed));
}
-void List::append(const string &v)
+List::~List()
{
- items.push_back(v);
- recalculate_parameters();
+ delete observer;
+ if(own_data)
+ delete data;
}
-void List::insert(unsigned i, const string &v)
+void List::autosize()
{
- if(i>items.size())
- throw InvalidParameterValue("Index out of range");
+ if(!style)
+ return;
+
+ Widget::autosize();
+
+ if(const Part *items_part = style->get_part("items"))
+ {
+ const Sides &margin = items_part->get_margin();
- items.insert(items.begin()+i, v);
- recalculate_parameters();
+ unsigned max_w = 0;
+ unsigned total_h = 0;
+ for(unsigned i=0; i<items.size(); ++i)
+ {
+ items[i]->autosize();
+ const Geometry &igeom = items[i]->get_geometry();
+ 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();
+
+ geom.w = max(geom.w, max_w+margin.left+margin.right);
+ geom.h = max(geom.h, total_h+margin.top+margin.bottom);
+ }
+
+ check_view_range();
+ rebuild();
}
-void List::remove(unsigned i)
+void List::set_data(ListData &d)
{
- if(i>items.size())
- throw InvalidParameterValue("Index out of range");
+ delete observer;
+ if(own_data)
+ delete data;
+
+ data = &d;
+ own_data = false;
+ observer = new DataObserver(*this);
+
+ items_changed();
+}
- 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;
+void List::items_changed()
+{
+ check_view_range();
+ signal_autosize_changed.emit();
+ reposition_items();
+}
- recalculate_parameters();
+List::Item *List::create_item(unsigned index)
+{
+ return new BasicItem(data->get_string(index));
}
-void List::clear()
+void List::set_view_size(unsigned s)
{
- items.clear();
- sel_index=-1;
+ view_size = s;
+ signal_autosize_changed.emit();
+}
- recalculate_parameters();
+void List::set_view_all()
+{
+ 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(sel_index>=0)
+ items[sel_index]->set_active(false);
if(i<0)
- sel_index=-1;
- else if(i<static_cast<int>(items.size()))
+ sel_index = -1;
+ else
{
- sel_index=i;
- signal_item_selected.emit(sel_index, items[sel_index]);
+ sel_index = i;
+ items[sel_index]->set_active(true);
+ signal_item_selected.emit(sel_index);
}
- else
- throw InvalidParameterValue("Index out of range");
}
-const string &List::get_selected() const
+void List::render_special(const Part &part, GL::Renderer &renderer) const
{
- if(sel_index<0)
- throw InvalidState("No selection");
-
- return items[sel_index];
+ if(part.get_name()=="items")
+ {
+ 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);
}
void List::button_press(int x, int y, unsigned btn)
{
- if(slider->get_geometry().is_inside(x, y))
+ Container::button_press(x, y, btn);
+ if(click_focus && btn==1)
{
- const Geometry &sgeom=slider->get_geometry();
- slider->button_press(x-sgeom.x, y-sgeom.y, btn);
- slider_active=true;
+ for(unsigned i=first; (i<items.size() && items[i]->is_visible()); ++i)
+ if(click_focus==items[i])
+ {
+ set_selected_index(i);
+ break;
+ }
}
- else if(btn==1)
- {
- const GL::Font *const font=style->get_font();
- const unsigned row_height=static_cast<unsigned>(font->get_default_size());
+}
- if(items_part)
- y+=items_part->get_margin().top;
+void List::on_geometry_change()
+{
+ reposition_slider();
+ reposition_items();
- unsigned i=(geom.h-1-y)/row_height;
- if(i<n_visible && first+i<items.size())
- {
- sel_index=first+i;
+ check_view_range();
+}
- signal_item_selected.emit(sel_index, items[sel_index]);
- }
- }
+void List::on_style_change()
+{
+ if(!style)
+ return;
+
+ reposition_slider();
+ reposition_items();
+
+ check_view_range();
}
-void List::button_release(int x, int y, unsigned btn)
+void List::reposition_slider()
{
- if(slider_active)
+ if(!style)
+ return;
+
+ if(const Part *slider_part = style->get_part("slider"))
{
- const Geometry &sgeom=slider->get_geometry();
- slider->button_release(x-sgeom.x, y-sgeom.y, btn);
- slider_active=false;
+ Geometry sgeom = slider_part->get_geometry();
+ slider_part->get_alignment().apply(sgeom, geom, slider_part->get_margin());
+ slider.set_geometry(sgeom);
}
}
-void List::pointer_motion(int x, int y)
+void List::reposition_items()
{
- if(slider_active)
+ if(!style)
+ return;
+
+ if(const Part *items_part = style->get_part("items"))
{
- const Geometry &sgeom=slider->get_geometry();
- slider->pointer_motion(x-sgeom.x, y-sgeom.y);
+ const Sides &margin = items_part->get_margin();
+ unsigned w = geom.w-margin.left-margin.right;
+ unsigned y = 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;
+ }
+ }
+ }
}
}
-void List::render_special(const Part &part) const
+void List::check_view_range()
{
- if(part.get_name()=="items")
- {
- const GL::Font *const font=style->get_font();
- const float font_size=font->get_default_size();
- const unsigned row_height=static_cast<unsigned>(font_size);
- const Sides &margin=part.get_margin();
+ if(!style)
+ return;
- Geometry pgeom=geom;
- pgeom.h=row_height;
- pgeom.w-=margin.left+margin.right;
-
- for(unsigned i=0; (i<n_visible && first+i<items.size()); ++i)
- {
- Geometry rgeom;
- rgeom.w=static_cast<unsigned>(font->get_string_width(items[first+i])*font_size);
- rgeom.h=static_cast<unsigned>((font->get_ascent()-font->get_descent())*font_size);
- rgeom.y=geom.h-margin.top-(i+1)*row_height-static_cast<int>(font->get_descent()*font_size);
- part.get_alignment().apply(rgeom, pgeom);
-
- GL::push_matrix();
- GL::translate(rgeom.x, rgeom.y, 0);
- GL::scale_uniform(font_size);
- font->draw_string(items[first+i]);
- GL::pop_matrix();
- }
+ unsigned h = geom.h;
+ if(const Part *items_part = style->get_part("items"))
+ {
+ const Sides &margin = items_part->get_margin();
+ h -= margin.top+margin.bottom;
}
- else if(part.get_name()=="selection")
+
+ max_scroll = items.size();
+ for(unsigned i=items.size(); i-->0; )
{
- if(sel_index>=static_cast<int>(first) && sel_index<static_cast<int>(first+n_visible))
+ unsigned ih = items[i]->get_geometry().h;
+ if(ih<=h)
{
- const GL::Font *const font=style->get_font();
- const float font_size=font->get_default_size();
- const unsigned row_height=static_cast<unsigned>(font_size);
- const Sides &margin=part.get_margin();
-
- Geometry pgeom=geom;
- pgeom.h=row_height;
- pgeom.w-=margin.left+margin.right;
-
- 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);
-
- GL::push_matrix();
- GL::translate(rgeom.x, rgeom.y, 0);
- part.get_graphic(state)->render(rgeom.w, rgeom.h);
- GL::pop_matrix();
+ h -= ih;
+ --max_scroll;
}
}
- else if(part.get_name()=="slider")
- slider->render();
+
+ if(first>max_scroll)
+ first = max_scroll;
+
+ slider.set_range(0, max_scroll);
+ slider.set_value(max_scroll-first);
}
-void List::on_geometry_change()
+void List::slider_value_changed(double value)
{
- reposition_slider();
+ if(max_scroll>0)
+ {
+ first = max_scroll-static_cast<unsigned>(value);
+ reposition_items();
+ }
+}
+
- recalculate_parameters();
+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_strings.connect(sigc::mem_fun(this, &DataObserver::refresh_strings));
}
-void List::on_style_change()
+void List::DataObserver::item_added(unsigned i)
{
- reposition_slider();
+ if(list.sel_index>=static_cast<int>(i))
+ ++list.sel_index;
- items_part=0;
- for(list<Part>::const_iterator i=style->get_parts().begin(); i!=style->get_parts().end(); ++i)
- if(i->get_name()=="items")
- items_part=&*i;
+ Item *item = list.create_item(i);
+ list.add(*item);
+ list.items.insert(list.items.begin()+i, item);
+ list.items_changed();
+}
- recalculate_parameters();
+void List::DataObserver::item_removed(unsigned i)
+{
+ if(list.sel_index>static_cast<int>(i))
+ --list.sel_index;
+ else if(list.sel_index==static_cast<int>(i))
+ list.sel_index = -1;
+
+ delete list.items[i];
+ list.items.erase(list.items.begin()+i);
+ list.items_changed();
}
-void List::reposition_slider()
+void List::DataObserver::cleared()
{
- for(list<Part>::const_iterator i=style->get_parts().begin(); i!=style->get_parts().end(); ++i)
- if(i->get_name()=="slider")
- {
- Geometry sgeom=i->get_geometry();
- i->get_alignment().apply(sgeom, geom, i->get_margin());
- slider->set_geometry(sgeom);
- }
+ list.sel_index = -1;
+ for(vector<Item *>::iterator i=list.items.begin(); i!=list.items.end(); ++i)
+ delete *i;
+ list.items.clear();
+ list.items_changed();
}
-void List::recalculate_parameters()
+void List::DataObserver::refresh_strings()
{
- const GL::Font *font=style->get_font();
- unsigned row_height=static_cast<unsigned>(font->get_default_size());
+ list.items_changed();
+}
- unsigned h=geom.h;
- if(items_part)
- {
- const Sides &margin=items_part->get_margin();
- h-=margin.top+margin.bottom;
- }
- n_visible=h/row_height;
+void List::Item::autosize()
+{
+ Widget::autosize();
- if(first+n_visible>items.size())
+ if(const Part *part = style->get_part("children"))
{
- if(items.size()>n_visible)
- first=items.size()-n_visible;
- else
- first=0;
+ const Sides &margin = part->get_margin();
+ for(list<Child *>::const_iterator i=children.begin(); i!=children.end(); ++i)
+ {
+ const Geometry &cgeom = (*i)->widget->get_geometry();
+ geom.w = max(geom.w, cgeom.x+cgeom.w+margin.right);
+ geom.h = max(geom.h, cgeom.y+cgeom.h+margin.top);
+ }
}
+}
- if(items.size()>n_visible)
- {
- slider->set_range(0, items.size()-n_visible);
- slider->set_value(items.size()-n_visible-first);
- }
- else
+void List::Item::set_active(bool a)
+{
+ set_state(ACTIVE, (a ? ACTIVE : NORMAL));
+}
+
+void List::Item::render_special(const Part &part, GL::Renderer &renderer) const
+{
+ if(part.get_name()=="children")
{
- slider->set_range(0, 0);
- slider->set_value(0);
+ for(list<Child *>::const_iterator i=children.begin(); i!=children.end(); ++i)
+ (*i)->widget->render(renderer);
}
}
-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);
}
void List::Loader::item(const string &v)
{
- static_cast<List &>(wdg).append(v);
+ dynamic_cast<BasicListData<string> &>(*obj.data).append(v);
}
} // namespace GLtk
projects / libs / gltk.git / blobdiff