void List::draw_label_helper(const Cairo::RefPtr<Cairo::Context> & cr, ListNode * label, const char * text, int x, int y, LabelArrowPos arrowPos) {
cr->set_source_rgb(0.0, 0.0, 0.0);
Pango::FontDescription font;
font.set_family("Monospace");
font.set_weight(Pango::WEIGHT_BOLD);
Glib::RefPtr<Pango::Layout> layout = create_pango_layout(text);
layout->set_font_description(font);
int text_w, text_h;
layout->get_pixel_size(text_w, text_h);
cr->move_to(x, y);
layout->show_in_cairo_context(cr);
if (label != NULL) {
if (arrowPos == RIGHT) {
draw_arrow_helper(cr, x + text_w + 10, y + text_h / 2, label->x - 10, label->y + ListNode::field_h);
} else {
draw_arrow_helper(cr, x - 10, y + text_h / 2, label->x + ListNode::field_w + 10, label->y + ListNode::field_h);
}
} else {
if (arrowPos == RIGHT) {
draw_null_arrow(cr, x + text_w + 10, y + text_h / 2, true);
} else {
draw_null_arrow(cr, x - 10, y + text_h / 2, false);
}
}
}
void ListNode::draw_text(const Cairo::RefPtr<Cairo::Context> & cr, int x, int y) {
char * str = new char[10];
sprintf(str, "%d", data);
Pango::FontDescription font;
font.set_family("Monospace");
font.set_weight(Pango::WEIGHT_BOLD);
Glib::RefPtr<Pango::Layout> layout = create_pango_layout(str);
layout->set_font_description(font);
int text_w, text_h;
layout->get_pixel_size(text_w, text_h);
cr->move_to(x + (field_w - text_w) / 2, y + (field_h - text_h) / 2);
layout->show_in_cairo_context(cr);
}
bool GraficoDeTorta::dibujar(const Cairo::RefPtr<Cairo::Context>& contexto){
Gdk::Rectangle rect = dibujo->get_allocation();
Pango::FontDescription font;
font.set_family("Monospace");
font.set_weight(Pango::WEIGHT_BOLD);
if(stock.size() == 0) return false;
contexto->set_source_rgb(1.0,1.0,1.0);
contexto->paint();
int total = 0;
for(unsigned int i = 0; i < stock.size(); i++){
total += stock[i].second;
}
float step = 2*M_PI/total;
total = 0;
float angulo0=0;
for(unsigned int i = 0; i < stock.size(); i++){
float angulo1 = step*stock[i].second + angulo0;
dibujarArco(contexto,rect.get_width()/2-rect.get_width()/4,rect.get_height()/2,rect.get_width()<rect.get_height()?rect.get_width()/4:rect.get_height()/4,angulo0,angulo1,red[i],green[i],blue[i]);
angulo0 = angulo1;
}
Glib::RefPtr<Pango::Layout> layout;
std::stringstream s;
for(unsigned int i = 0; i < stock.size(); i++){
s.str("");
s << stock[i].first << "\t" << stock[i].second;
layout = dibujo->create_pango_layout(s.str());
layout -> set_font_description(font);
int t_width, t_height;
layout->get_pixel_size(t_width,t_height);
contexto->set_source_rgb(0,0,0);
contexto -> move_to((rect.get_width())/2,15*(i+1)+5);
layout -> show_in_cairo_context(contexto);
contexto -> set_source_rgb(red[i],green[i],blue[i]);
contexto -> rectangle(rect.get_width()/2+80,15*(i+1)+5,30,15);
contexto -> fill();
}
return true;
}