158 lines
4.4 KiB
C
158 lines
4.4 KiB
C
/*
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* Feynman -- Wayland compositor for GNU Emacs
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*
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* Copyright (c) 2022 Sameer Rahmani <lxsameer@gnu.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 2.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "compositor.h"
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#include "export.h"
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#include "queue.h"
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#include "utils.h"
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#include <assert.h>
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#include <emacs-module.h>
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/* Declare mandatory GPL symbol. */
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FEYNMAN_EXPORT int plugin_is_GPL_compatible = 0;
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// static queue_t *feynman_events_q;
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// This value will hold a global reference to a `feynman_server` struct
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emacs_value server_state;
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static void
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free_value (void *ptr)
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{
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free (ptr);
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};
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void *
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start_event_loop (void *server_ptr)
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{
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assert (server_ptr);
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struct feynman_server *server = (struct feynman_server *)server_ptr;
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start_feynman (server);
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return NULL;
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}
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static emacs_value
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feynman_start (emacs_env *env, ptrdiff_t nargs, emacs_value args[], void *data)
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{
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(void)nargs;
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(void)args;
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(void)data;
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emacs_value nil = env->intern (env, "nil");
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struct feynman_server *server = malloc (sizeof (struct feynman_server));
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int err = init_feynman_server (env, server);
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if (err != 0)
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{
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em_error (env, "Start process failed.Received none zero error code: %d",
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err);
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return nil;
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}
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// feynman_events_q = (queue_t *)init_queue(100);
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pthread_create (&server->server_thread_id, NULL, start_event_loop,
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(void *)server);
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server_state = env->make_global_ref (
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env, env->make_user_ptr (env, free_value, (void *)server));
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return server_state;
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}
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static emacs_value
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/* cppcheck-suppress constParameter */
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feynman_stop (emacs_env *env, ptrdiff_t nargs, emacs_value args[], void *data)
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{
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(void)nargs;
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(void)data;
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emacs_value nil = env->intern (env, "nil");
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emacs_value first_arg = args[0];
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if (env->eq (env, first_arg, nil))
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{
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em_message (env, "server parameter is nil");
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return nil;
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}
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struct feynman_server *server
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= (struct feynman_server *)env->get_user_ptr (env, first_arg);
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stop_feynman (env, server);
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// deinit_queue(feynman_events_q);
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emacs_value t = env->intern (env, "t");
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return t;
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}
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/* Bind NAME to FUN. */
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static void
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bind_function (emacs_env *env, const char *name, emacs_value Sfun)
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{
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/* Set the function cell of the symbol named NAME to SFUN using
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the 'fset' function. */
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/* Convert the strings to symbols by interning them */
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emacs_value Qfset = env->intern (env, "fset");
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emacs_value Qsym = env->intern (env, name);
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/* Prepare the arguments array */
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emacs_value args[] = { Qsym, Sfun };
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/* Make the call (2 == nb of arguments) */
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env->funcall (env, Qfset, 2, args);
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}
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/* Provide FEATURE to Emacs. */
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static void
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provide (emacs_env *env, const char *feature)
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{
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/* call 'provide' with FEATURE converted to a symbol */
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emacs_value Qfeat = env->intern (env, feature);
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emacs_value Qprovide = env->intern (env, "provide");
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emacs_value args[] = { Qfeat };
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env->funcall (env, Qprovide, 1, args);
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}
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FEYNMAN_EXPORT int
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emacs_module_init (struct emacs_runtime *ert)
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{
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emacs_env *env = ert->get_environment (ert);
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/* create a lambda (returns an emacs_value) */
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emacs_value startfn = env->make_function (
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env, 0, /* min. number of arguments */
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0, /* max. number of arguments */
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feynman_start, /* actual function pointer */
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"Initialize the compositor", /* docstring */
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NULL /* user pointer of your choice (data param in feynman_init) */
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);
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bind_function (env, "feynman/start", startfn);
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emacs_value stopfn = env->make_function (
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env, 1, /* min. number of arguments */
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1, /* max. number of arguments */
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feynman_stop, /* actual function pointer */
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"Stop the compositor", /* docstring */
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NULL /* user pointer of your choice (data param in feynman_init) */
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);
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bind_function (env, "feynman/stop", stopfn);
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provide (env, "feynman");
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return 0;
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}
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