notcurses/include/ncpp/Utilities.hh
Marek Habersack b5d8549bb3 [C++] Allow multiple instances of NotCurses
This is to make it possible, in the future, to create multiple instances
of `NotCurses` for multiple terminals.  The first instance of
`NotCurses` becomes the default one, so that any instances of other
classes that aren't explicitly created with a pointer to another
`NotCurses` instance still work as expected.

Note that currently trying to call `notcurses_init` twice results in the
following error for me:

    0x55555559bfc0 is already registered for signals
    Couldn't drop signals: 0x55555559bfc0 != 0x5555555b6720
    terminate called after throwing an instance of 'ncpp::init_error*'

    Program received signal SIGABRT, Aborted.

The error is signalled by `setup_signals` and the pointer shown in the
message points to the first `struct notcurses` instance created.
2020-05-26 04:34:31 -04:00

40 lines
751 B
C++

#ifndef __NCPP_UTILITIES_HH
#define __NCPP_UTILITIES_HH
#include <notcurses/notcurses.h>
#include "_helpers.hh"
namespace ncpp
{
class NotCurses;
class Plane;
class Root;
class NCPP_API_EXPORT Utilities
{
public:
static ncplane* to_ncplane (const Plane *plane) noexcept;
static ncplane* to_ncplane (const Plane &plane) noexcept
{
return to_ncplane (&plane);
}
static NotCurses* get_notcurses_cpp (const Root *o) noexcept;
static NotCurses* get_notcurses_cpp (const Root &o) noexcept
{
return get_notcurses_cpp (&o);
}
static NotCurses* get_notcurses_cpp (const Plane *plane) noexcept;
static NotCurses* get_notcurses_cpp (const Plane &plane) noexcept
{
return get_notcurses_cpp (&plane);
}
};
}
#endif