+#include <msp/core/raii.h>
#include <msp/debug/demangle.h>
#include <msp/gl/matrix.h>
#include <msp/gl/meshbuilder.h>
first = 0;
max_scroll = 0;
view_size = 5;
+ ignore_slider_change = false;
observer = new DataObserver(*this);
void List::items_changed()
{
- check_view_range();
signal_autosize_changed.emit();
- reposition_items();
+ rebuild();
}
List::Item *List::create_item(unsigned index)
{
- Item *item = 0;
+ 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->signal_autosize_changed.connect(sigc::mem_fun(this, &List::item_autosize_changed));
+ item->autosize();
+ item->signal_autosize_changed.connect(sigc::bind(sigc::mem_fun(this, &List::item_autosize_changed), item));
return item;
}
if(i>=static_cast<int>(data->size()))
throw out_of_range("List::set_selected_index");
- if(i==sel_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;
+ signal_selection_cleared.emit();
+ }
else
{
sel_index = i;
{
if(part.get_name()=="slider")
reposition_child(slider, part);
- Widget::rebuild_special(part);
-}
-
-void List::render_special(const Part &part, GL::Renderer &renderer) const
-{
- if(part.get_name()=="items")
+ else 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)
-{
- 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::on_geometry_change()
-{
- reposition_items();
-
- check_view_range();
-}
-
-void List::on_style_change()
-{
- if(!style)
- return;
-
- reposition_items();
-
- check_view_range();
-}
-
-void List::item_autosize_changed()
-{
- signal_autosize_changed.emit();
- reposition_items();
-}
-
-void List::reposition_items()
-{
- if(!style)
- return;
+ SetFlag flag(ignore_slider_change);
+ check_view_range();
- if(const Part *items_part = style->get_part("items"))
- {
- const Sides &margin = items_part->get_margin();
+ 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)
items[i]->set_visible(false);
else
{
- Geometry igeom;
- items[i]->autosize(igeom);
+ Geometry igeom = items[i]->get_geometry();
if(igeom.h+margin.bottom<=y)
{
items[i]->set_visible(true);
}
}
}
+
+ Widget::rebuild_special(part);
+}
+
+void List::render_special(const Part &part, GL::Renderer &renderer) const
+{
+ 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(btn==4 || btn==5)
+ {
+ unsigned change = 3;
+ if(btn==4)
+ {
+ 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::item_autosize_changed(Item *item)
+{
+ item->autosize();
+ signal_autosize_changed.emit();
+ rebuild();
}
void List::check_view_range()
void List::slider_value_changed(double value)
{
- if(max_scroll>0)
+ if(max_scroll>0 && !ignore_slider_change)
{
first = max_scroll-static_cast<unsigned>(value);
- reposition_items();
+ rebuild();
}
}
void List::DataObserver::item_removed(unsigned i)
{
+ bool had_selection = (list.sel_index>=0);
if(list.sel_index>static_cast<int>(i))
--list.sel_index;
else if(list.sel_index==static_cast<int>(i))
delete list.items[i];
list.items.erase(list.items.begin()+i);
list.items_changed();
+
+ if(had_selection && list.sel_index<0)
+ list.signal_selection_cleared.emit();
}
void List::DataObserver::cleared()
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();
}
if(MultiColumnItem *mci = dynamic_cast<MultiColumnItem *>(*i))
mci->set_widths(self_widths);
}
- else
- set_widths(self_widths);
+
+ set_widths(self_widths);
}