void NumericalEntry::get_preferred_width_vfunc(int &minimum_width, int &natural_width) const
{
Glib::RefPtr<Gtk::StyleContext> style_context = get_style_context();
Glib::RefPtr<const Pango::Layout> layout = get_layout();
Glib::RefPtr<Pango::Layout> layout_copy = Pango::Layout::create(layout->get_context());
// measure width of a string containing the upper value
string upper_str = format_for_value(_adjustment->get_upper());
int upper_width = measure_string_width(layout_copy, upper_str);
int width = max(upper_width, MIN_WIDTH);
// measure width of a string containing the lower value
string lower_str = format_for_value(_adjustment->get_lower());
int lower_width = measure_string_width(layout_copy, lower_str);
width = max(width, lower_width);
// add borders
Gtk::Border border = style_context->get_border();
width += border.get_left() + border.get_right();
// add paddings
Gtk::Border padding = style_context->get_padding();
width += padding.get_left() + padding.get_right();
minimum_width = width;
natural_width = width;
}
static void
bt_sighandler (int sig, siginfo_t *info, gpointer data)
{
void *trace[35];
char **messages = (char **) NULL;
int i, trace_size = 0;
g_print ("Got signal %d\n", sig);
/* Do something useful with siginfo_t */
if (sig == SIGSEGV) {
g_printerr ("Got signal %d, faulty address is %p\n", sig,
(gpointer) info->si_addr);
} else if (sig == SIGKILL || sig == SIGINT) {
/* since we connect to a signal handler, asynchronous management might */
/* might happen so we need to set an idle handler to exit the main loop */
/* in the mainloop context. */
Glib::RefPtr<Glib::IdleSource> idle_source = Glib::IdleSource::create ();
idle_source->connect (sigc::ptr_fun (&quit_loop) );
idle_source->attach (loop->get_context() );
return;
}
trace_size = backtrace (trace, 35);
/* overwrite sigaction with caller's address */
messages = backtrace_symbols (trace, trace_size);
/* skip first stack frame (points here) */
g_print ("\t[bt] Execution path:\n");
for (i = 1; i < trace_size; ++i) {
g_print ("\t[bt] #%d %s\n", i, messages[i]);
char syscom[256];
gchar **strs;
const gchar *exe;
strs = g_strsplit (messages[i], "(", 2);
if (strs[1] == NULL) {
exe = getExecutableName ();
} else {
exe = strs[0];
}
sprintf (syscom, "echo -n \"\t[bt]\t\t\"; addr2line %p -s -e %s",
trace[i], exe);
g_strfreev (strs);
if (system (syscom) == -1) {
g_printerr ("Error calling addr2line\n");
}
}
if (sig == SIGPIPE) {
GST_DEBUG ("Ignore sigpipe");
} else {
exit (sig);
}
}