mirror of
https://github.com/dankamongmen/notcurses.git
synced 2024-11-02 09:40:15 +00:00
b5d8549bb3
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.
105 lines
2.5 KiB
C++
105 lines
2.5 KiB
C++
#ifndef __NCPP_VISUAL_HH
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#define __NCPP_VISUAL_HH
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#include <notcurses/notcurses.h>
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#include "Root.hh"
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#include "NCScale.hh"
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#include "Utilities.hh"
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namespace ncpp
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{
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class NotCurses;
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class Plane;
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class NCPP_API_EXPORT Visual : public Root
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{
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public:
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explicit Visual (Plane *plane, const char *file, nc_err_e* ncerr)
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: Visual (static_cast<const Plane*>(plane), file, ncerr)
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{}
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explicit Visual (Plane const* plane, const char *file, nc_err_e* ncerr)
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: Root (Utilities::get_notcurses_cpp (plane))
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{
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common_init (Utilities::to_ncplane (plane), file, ncerr);
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}
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explicit Visual (Plane &plane, const char *file, nc_err_e* ncerr)
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: Visual (static_cast<Plane const&> (plane), file, ncerr)
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{}
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explicit Visual (Plane const& plane, const char *file, nc_err_e* ncerr)
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: Root (Utilities::get_notcurses_cpp (plane))
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{
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common_init (Utilities::to_ncplane (plane), file, ncerr);
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}
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explicit Visual (const char *file, nc_err_e* ncerr, int y, int x, NCScale scale, NotCurses *ncinst = nullptr)
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: Root (ncinst)
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{
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visual = ncvisual_from_file (get_notcurses (), file, ncerr, y, x, static_cast<ncscale_e>(scale));
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if (visual == nullptr)
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throw init_error ("Notcurses failed to create a new visual");
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}
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~Visual () noexcept
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{
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if (!is_notcurses_stopped ())
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ncvisual_destroy (visual);
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}
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operator ncvisual* () const noexcept
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{
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return visual;
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}
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operator ncvisual const* () const noexcept
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{
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return visual;
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}
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nc_err_e decode () const noexcept
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{
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return ncvisual_decode (visual);
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}
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bool render (int begy, int begx, int leny, int lenx) const NOEXCEPT_MAYBE
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{
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return error_guard (ncvisual_render (visual, begy, begx, leny, lenx), -1);
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}
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int stream (nc_err_e* ncerr, float timescale, streamcb streamer, void *curry = nullptr) const NOEXCEPT_MAYBE
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{
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return error_guard<int> (ncvisual_stream (get_notcurses (), visual, ncerr, timescale, streamer, curry), -1);
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}
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char* subtitle () const noexcept
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{
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return ncvisual_subtitle (visual);
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}
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Plane* get_plane () const noexcept;
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bool rotate (double rads) const NOEXCEPT_MAYBE
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{
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return error_guard (ncvisual_rotate (visual, rads), -1);
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}
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private:
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void common_init (ncplane *plane, const char *file, nc_err_e* ncerr)
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{
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if (plane == nullptr)
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throw invalid_argument ("'plane' must be a valid pointer");
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visual = ncplane_visual_open (plane, file, ncerr);
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if (visual == nullptr)
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throw init_error ("Notcurses failed to create a new visual");
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}
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private:
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ncvisual *visual = nullptr;
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};
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}
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#endif
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