void circuit_t::ReduceParallelList (const item_list_t ¶llel_list)
{
item_t first_item = parallel_list.front();
node_t* new_top_node = first_item.e->TopNode();
node_t* new_bottom_node = first_item.e->BottomNode();
string new_value = "";
// Cap, Current Source
if (first_item.e->type == E_CAPACITOR || first_item.e->type == E_CSRC)
{
for (item_list_t::const_iterator i = parallel_list.begin(); i != parallel_list.end(); i++)
{
if (i->e->type == E_VSRC)
{
new_value += i->e->GetValueAsString(i->direction);
if (next(i) != parallel_list.end()) new_value += " + ";
} /* if */
else
{
new_value += i->e->GetValueAsString();
if (next(i) != parallel_list.end()) new_value += " + ";
} /* else */
DisconnectElement (i->e);
} /* for */
} /* if */
// all elements
else
{
new_value = "(";
for (item_list_t::const_iterator i = parallel_list.begin(); i != parallel_list.end(); i++)
{
new_value += i->e->GetValueAsString(i->direction) + "^(-1)";
if (next(i) != parallel_list.end())
new_value += " + ";
DisconnectElement (i->e);
} /* for */
new_value += ")^(-1)";
} /* else */
element_t* new_element = AddElement (NONE, first_item.e->type, 0, ITEM_DIRECTION_FWD, new_top_node, new_bottom_node);
new_element->SetValueFromString (new_value);
Reconstruct();
//solution->add_step (STEP_PARALLEL_REDUCTION, parallel_list);
} /* circuit_t::reduce_parallel_list */
bool
ViewDrawingArea::on_configure_event (GdkEventConfigure *event)
{
#ifdef DEBUG
std::cerr << "on_configure_event()" << std::endl << std::flush;
#endif
if (_pixmap)
_pixmap.clear();
const Gtk::Allocation& all = get_allocation();
_pixmap = Gdk::Pixmap::create (get_window(),
all.get_width(),
all.get_height());
if (AppContext::get().get_feed() == NULL)
{
Cairo::RefPtr<Cairo::Context> cr = _pixmap->create_cairo_context();
cr->set_source_rgb (1.0, 1.0, 1.0);
cr->paint();
cr->show_page();
}
else
{
const AppContext& ac = AppContext::get();
if (ac.get_display_type() == FULL)
ac.get_curr_item()->reset_display_unit();
else
{
Feed *feed = ac.get_feed();
const item_list_t items = feed->get_items();
for_each (items.begin(), items.end(),
std::mem_fun (&Item::reset_display_unit));
}
}
draw_buffer();
return true;
}
bool
ViewDrawingArea::on_button_press_event (GdkEventButton *event)
{
#ifdef DEBUG
std::cerr << "ButtonEvent y = " << event->y << std::endl << std::flush;
#endif
Feed *feed = AppContext::get().get_feed();
if (feed == NULL)
return true;
Gtk::Allocation allocation = get_allocation();
const int height = allocation.get_height();
const item_list_t items = feed->get_items();
item_list_t::const_iterator it = items.begin();
for (; it != items.end(); ++it)
if ((*it) == _top_item)
break;
double y = _topitem_y;
for (; it != items.end() && y < height; ++it)
{
ItemDisplayUnit *du = (*it)->get_display_unit();
y += du->get_height();
if (event->y < y)
break;
}
AppContext::get().set_curr_item (*it);
_vadj->set_value (0.0);
(*it)->reset_display_unit();
#ifdef DEBUG
if (it!=items.end())std::cerr << "Clicked: " << conv((*it)->_title) << std::endl << std::flush;
#endif
return true;
}
void
ViewDrawingArea::draw_buffer()
{
#ifdef DEBUG
std::cerr << "VA->val:"<<_vadj->get_value() <<" VA->upper:"<<_vadj->get_upper() << std::endl << std::flush;
#endif
Feed *feed = AppContext::get().get_feed();
if (feed == NULL)
return;
if (AppContext::get().get_display_type() == FULL)
{
render_full_article();
return;
}
// Dimensions of drawing area
Gtk::Allocation allocation = get_allocation();
const int width = allocation.get_width();
const int height = allocation.get_height();
// First determine start item
Cairo::RefPtr<Cairo::Context> cr = _pixmap->create_cairo_context();
#ifdef DEBUG
/// This code was meant to investigate the 500ms delay with pango
/// at start of rendering.
if (!_layout_prepared)
{
Glib::Timer sw;
sw.start();
Glib::RefPtr<Pango::Layout> pl = Pango::Layout::create (cr);
const char *fonts[] = {"Sans 10", "Sans 14"};
for (unsigned i = 0; i < sizeof(fonts)/sizeof(const char*); ++i)
{
Pango::FontDescription fdesc (fonts[i]);
pl->set_font_description (fdesc);
pl->set_width (10 * Pango::SCALE); // force line break
pl->set_markup ("<b>Show Us Your Freaky Geek Costumes</b>\nHitting the streets in a scary, tech-themed outfit this Halloween? We want to see it. Find out how your Sergey Brin costume (or is it David Duchovny?) could be featured on Wired News. test\n test");
Pango::Rectangle irect, lrect;
pl->get_extents (irect, lrect);
}
_layout_prepared = true;
sw.stop();
unsigned long l;
sw.elapsed(l);
std::cerr << "Time spent rendering: " << l << " us" << std::endl << std::flush;
}
#endif
const item_list_t items = feed->get_items();
item_list_t::const_iterator start_item;
const int n_items = items.size();
double y = 0.0;
if (n_items == 0)
start_item = items.end();
else
{
// Set start_item and h
int start = static_cast<int> (_vadj->get_value());
double h = 0.0;
if (_vadj->get_value() > 0 && _vadj->get_value() == _vadj->get_upper())
{
// This will give a blank page when pulling the handle
// full down. While unusual, it might make sense with
// an ever-growing newslist.
y = 0.0;
start_item = items.end();
}
else
{
start_item = items.begin();
for (int i = 0; i < start; ++i)
++start_item;
if (start < 0)
start = 0;
double prop = _vadj->get_value() - start;
if (prop > 0.0)
{
(*start_item)->make_display_unit();
ItemDisplayUnit *du = (*start_item)->get_display_unit();
du->layout (cr);
h = du->get_height();
}
y = - h * prop;
#ifdef DEBUG
std::cerr << "prop:"<<prop <<" y:"<<y << std::endl << std::flush;
#endif
}
}
// clip to the area indicated by the expose event so that we only redraw
// the portion of the window that needs to be redrawn
cr->reset_clip();
cr->rectangle (0.0, 0.0, width, height);
cr->clip();
// Black on white
cr->set_source_rgb (1.0, 1.0, 1.0);
cr->paint();
cr->set_source_rgb (0.0, 0.0, 0.0);
// Render text
item_list_t::const_iterator it = start_item;
_top_item = *start_item;
_topitem_y = y;
int count = 0;
for (; it != items.end() && y < height; ++it, ++count)
{
(*it)->make_display_unit();
ItemDisplayUnit *du = (*it)->get_display_unit();
du->render (cr, 0, y);
y += du->get_height();
}
cr->show_page();
// Scrollbar settings can now be specified
_vadj->set_upper (n_items);
//_vadj->set_page_size (count - 1 + );
_vadj->set_step_increment (1);
_vadj->set_page_increment (count);
_vadj->changed();
}
