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#include <stdarg.h>
#include <stdio.h>
#include "allegro5/allegro.h"
#include "allegro5/allegro_native_dialog.h"
#include "allegro5/internal/aintern_native_dialog.h"
#include "allegro5/internal/aintern_native_dialog_cfg.h"
#include "allegro5/internal/aintern_dtor.h"
#include "allegro5/internal/aintern_system.h"
/* The GTK implementation does not require an extra thread.
* The Windows and OSX implementations do.
*/
#if defined(ALLEGRO_CFG_NATIVE_DIALOG_WINDOWS) || defined(ALLEGRO_CFG_NATIVE_DIALOG_OSX)
#define TEXT_LOG_EXTRA_THREAD true
#else
#define TEXT_LOG_EXTRA_THREAD false
#endif
/* This will only return when the text window is closed. */
static void *text_log_thread_proc(ALLEGRO_THREAD *thread, void *arg)
{
ALLEGRO_NATIVE_DIALOG *textlog = arg;
if (!_al_open_native_text_log(textlog)) {
al_lock_mutex(textlog->tl_text_mutex);
textlog->tl_init_error = true;
al_signal_cond(textlog->tl_text_cond);
al_unlock_mutex(textlog->tl_text_mutex);
}
return thread;
}
/* Function: al_open_native_text_log
*/
ALLEGRO_TEXTLOG *al_open_native_text_log(char const *title, int flags)
{
ALLEGRO_NATIVE_DIALOG *textlog = NULL;
/* Avoid warnings when log windows are unimplemented. */
(void)title;
(void)flags;
textlog = al_calloc(1, sizeof *textlog);
textlog->title = al_ustr_new(title);
textlog->flags = flags;
if (TEXT_LOG_EXTRA_THREAD) {
textlog->tl_thread = al_create_thread(text_log_thread_proc, textlog);
}
textlog->tl_text_cond = al_create_cond();
textlog->tl_text_mutex = al_create_mutex();
textlog->tl_pending_text = al_ustr_new("");
al_init_user_event_source(&textlog->tl_events);
textlog->tl_init_error = false;
textlog->tl_done = false;
if (TEXT_LOG_EXTRA_THREAD) {
/* Unlike the other dialogs, this one never blocks as the intended
* use case is a log window running in the background for debugging
* purposes when no console can be used. Therefore we have it run
* in a separate thread.
*/
al_start_thread(textlog->tl_thread);
al_lock_mutex(textlog->tl_text_mutex);
while (!textlog->tl_done && !textlog->tl_init_error) {
al_wait_cond(textlog->tl_text_cond, textlog->tl_text_mutex);
}
al_unlock_mutex(textlog->tl_text_mutex);
}
else {
textlog->tl_init_error = !_al_open_native_text_log(textlog);
}
if (textlog->tl_init_error) {
al_close_native_text_log((ALLEGRO_TEXTLOG *)textlog);
return NULL;
}
_al_register_destructor(_al_dtor_list, textlog,
(void (*)(void *))al_close_native_text_log);
return (ALLEGRO_TEXTLOG *)textlog;
}
/* Function: al_close_native_text_log
*/
void al_close_native_text_log(ALLEGRO_TEXTLOG *textlog)
{
ALLEGRO_NATIVE_DIALOG *dialog = (ALLEGRO_NATIVE_DIALOG *)textlog;
if (!dialog)
return;
if (!dialog->tl_init_error) {
dialog->tl_done = false;
if (TEXT_LOG_EXTRA_THREAD) {
al_lock_mutex(dialog->tl_text_mutex);
_al_close_native_text_log(dialog);
while (!dialog->tl_done) {
al_wait_cond(dialog->tl_text_cond, dialog->tl_text_mutex);
}
}
else {
_al_close_native_text_log(dialog);
al_lock_mutex(dialog->tl_text_mutex);
}
_al_unregister_destructor(_al_dtor_list, dialog);
}
al_ustr_free(dialog->title);
al_ustr_free(dialog->tl_pending_text);
al_destroy_user_event_source(&dialog->tl_events);
al_unlock_mutex(dialog->tl_text_mutex);
if (TEXT_LOG_EXTRA_THREAD) {
al_destroy_thread(dialog->tl_thread);
}
al_destroy_cond(dialog->tl_text_cond);
al_destroy_mutex(dialog->tl_text_mutex);
al_free(dialog);
}
/* Function: al_append_native_text_log
*/
void al_append_native_text_log(ALLEGRO_TEXTLOG *textlog,
char const *format, ...)
{
ALLEGRO_NATIVE_DIALOG *dialog = (ALLEGRO_NATIVE_DIALOG *)textlog;
va_list args;
/* Fall back to printf if no window. */
if (!dialog) {
va_start(args, format);
vprintf(format, args);
va_end(args);
return;
}
al_lock_mutex(dialog->tl_text_mutex);
/* We could optimise the case where format="%s". */
va_start(args, format);
al_ustr_vappendf(dialog->tl_pending_text, format, args);
va_end(args);
_al_append_native_text_log(dialog);
al_unlock_mutex(dialog->tl_text_mutex);
}
/* Function: al_get_native_text_log_event_source
*/
ALLEGRO_EVENT_SOURCE *al_get_native_text_log_event_source(
ALLEGRO_TEXTLOG *textlog)
{
ALLEGRO_NATIVE_DIALOG *dialog = (ALLEGRO_NATIVE_DIALOG *)textlog;
ASSERT(dialog);
return &dialog->tl_events;
}
/* vim: set sts=3 sw=3 et: */
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