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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2014-2021. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* %CopyrightEnd%
*/
#if defined(_WIN32)
#include <wx/msw/private.h> // for wxSetInstance
#endif
#include "wxe_impl.h"
ErlNifTid wxe_thread;
ErlNifMutex *wxe_status_m;
ErlNifCond *wxe_status_c;
int wxe_status = WXE_NOT_INITIATED;
ErlNifMutex * wxe_batch_locker_m;
ErlNifCond * wxe_batch_locker_c;
ErlNifPid init_caller;
#ifdef __DARWIN__
extern "C" {
int erl_drv_stolen_main_thread_join(ErlNifTid tid, void **respp);
int erl_drv_steal_main_thread(char *name,
ErlNifTid *dtid,
void* (*func)(void*),
void* arg,
ErlNifThreadOpts *opts);
}
#endif
void *wxe_main_loop(void * );
/* ************************************************************
* START AND STOP of driver thread
* ************************************************************/
int start_native_gui(ErlNifEnv *env)
{
int res;
wxe_status_m = enif_mutex_create((char *) "wxe_status_m");
wxe_status_c = enif_cond_create((char *)"wxe_status_c");
wxe_batch_locker_m = enif_mutex_create((char *)"wxe_batch_locker_m");
wxe_batch_locker_c = enif_cond_create((char *)"wxe_batch_locker_c");
enif_self(env, &init_caller);
#ifdef __DARWIN__
res = erl_drv_steal_main_thread((char *)"wxwidgets",
&wxe_thread,wxe_main_loop,(void *) NULL,NULL);
#else
ErlNifThreadOpts *opts = enif_thread_opts_create((char *)"wx thread");
opts->suggested_stack_size = 8192;
res = enif_thread_create((char *)"wxwidgets",
&wxe_thread,wxe_main_loop,(void *) NULL,opts);
enif_thread_opts_destroy(opts);
#endif
if(res == 0) {
enif_mutex_lock(wxe_status_m);
for(;wxe_status == WXE_NOT_INITIATED;) {
enif_cond_wait(wxe_status_c, wxe_status_m);
}
enif_mutex_unlock(wxe_status_m);
return wxe_status;
} else {
wxString msg;
msg.Printf(wxT("Erlang failed to create wxe-thread %d\r\n"), res);
send_msg("error", &msg);
return -1;
}
}
void stop_native_gui(ErlNifEnv* env)
{
if(wxe_status == WXE_INITIATED) {
meta_command(env, WXE_SHUTDOWN, NULL);
}
#ifdef __DARWIN__
erl_drv_stolen_main_thread_join(wxe_thread, NULL);
#else
enif_thread_join(wxe_thread, NULL);
#endif
enif_mutex_destroy(wxe_status_m);
enif_cond_destroy(wxe_status_c);
enif_mutex_destroy(wxe_batch_locker_m);
enif_cond_destroy(wxe_batch_locker_c);
}
/* ************************************************************
* wxWidgets Thread
* ************************************************************/
void *wxe_main_loop(void * _unused)
{
int result;
int argc = 1;
wxChar temp[128] = L"Erlang";
size_t app_len = 127;
char app_title_buf[128];
int res = enif_getenv("WX_APP_TITLE", app_title_buf, &app_len);
if (res == 0) {
wxString title = wxString::FromUTF8(app_title_buf);
int size = title.Length() < 127 ? title.Length() : 126;
for(int i = 0; i < size; i++) {
temp[i] = title[i];
}
temp[size] = 0;
}
wxChar * argv[] = {(wxChar *)temp, NULL};
#ifdef _WIN32
// Setup that wxWidgets should look for cursors and icons in
// this dll and not in werl.exe (which is the default)
HMODULE WXEHandle = GetModuleHandle(_T("wxe_driver"));
wxSetInstance((HINSTANCE) WXEHandle);
#endif
wxe_ps_init();
result = wxEntry(argc, argv);
// fprintf(stderr, "WXWidgets quits main loop %d \r\n", result);
if(result >= 0 && wxe_status == WXE_INITIATED) {
/* We are done try to make a clean exit */
wxe_status = WXE_EXITED;
#ifndef __DARWIN__
enif_thread_exit(NULL);
#endif
return NULL;
} else {
enif_mutex_lock(wxe_status_m);
wxe_status = WXE_ERROR;
enif_cond_signal(wxe_status_c);
enif_mutex_unlock(wxe_status_m);
// driver_pdl_dec_refc(pdl);
return NULL;
}
}
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