From a855d6202536ff28e5aae4f22a0f31d8f5b325d0 Mon Sep 17 00:00:00 2001
From: Franklin Wei <git@fwei.tk>
Date: Sat, 21 Jan 2017 15:18:31 -0500
Subject: Port of Duke Nukem 3D

This ports Fabien Sanglard's Chocolate Duke to run on a version of SDL
for Rockbox.

Change-Id: I8f2c4c78af19de10c1633ed7bb7a997b43256dd9
---
 apps/plugins/sdl/src/events/SDL_quit.c | 124 +++++++++++++++++++++++++++++++++
 1 file changed, 124 insertions(+)
 create mode 100644 apps/plugins/sdl/src/events/SDL_quit.c

(limited to 'apps/plugins/sdl/src/events/SDL_quit.c')

diff --git a/apps/plugins/sdl/src/events/SDL_quit.c b/apps/plugins/sdl/src/events/SDL_quit.c
new file mode 100644
index 0000000000..2e6c56e796
--- /dev/null
+++ b/apps/plugins/sdl/src/events/SDL_quit.c
@@ -0,0 +1,124 @@
+/*
+    SDL - Simple DirectMedia Layer
+    Copyright (C) 1997-2012 Sam Lantinga
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+    Sam Lantinga
+    slouken@libsdl.org
+*/
+#include "SDL_config.h"
+
+/* General quit handling code for SDL */
+
+#ifdef HAVE_SIGNAL_H
+#include <signal.h>
+#endif
+
+#include "SDL_events.h"
+#include "SDL_events_c.h"
+
+
+#ifdef HAVE_SIGNAL_H
+static void SDL_HandleSIG(int sig)
+{
+	/* Reset the signal handler */
+	signal(sig, SDL_HandleSIG);
+
+	/* Signal a quit interrupt */
+	SDL_PrivateQuit();
+}
+#endif /* HAVE_SIGNAL_H */
+
+/* Public functions */
+int SDL_QuitInit(void)
+{
+#ifdef HAVE_SIGACTION
+	struct sigaction action;
+	sigaction(SIGINT, NULL, &action);
+#  ifdef HAVE_SA_SIGACTION
+	if ( action.sa_handler == SIG_DFL && action.sa_sigaction == (void*)SIG_DFL ) {
+#  else
+	if ( action.sa_handler == SIG_DFL ) {
+#  endif
+		action.sa_handler = SDL_HandleSIG;
+		sigaction(SIGINT, &action, NULL);
+	}
+	sigaction(SIGTERM, NULL, &action);
+#  ifdef HAVE_SA_SIGACTION
+	if ( action.sa_handler == SIG_DFL && action.sa_sigaction == (void*)SIG_DFL ) {
+#  else
+	if ( action.sa_handler == SIG_DFL ) {
+#  endif
+		action.sa_handler = SDL_HandleSIG;
+		sigaction(SIGTERM, &action, NULL);
+	}
+#elif HAVE_SIGNAL_H
+	void (*ohandler)(int);
+
+	/* Both SIGINT and SIGTERM are translated into quit interrupts */
+	ohandler = signal(SIGINT, SDL_HandleSIG);
+	if ( ohandler != SIG_DFL )
+		signal(SIGINT, ohandler);
+	ohandler = signal(SIGTERM, SDL_HandleSIG);
+	if ( ohandler != SIG_DFL )
+		signal(SIGTERM, ohandler);
+#endif /* HAVE_SIGNAL_H */
+
+	/* That's it! */
+	return(0);
+}
+void SDL_QuitQuit(void)
+{
+#ifdef HAVE_SIGACTION
+	struct sigaction action;
+	sigaction(SIGINT, NULL, &action);
+	if ( action.sa_handler == SDL_HandleSIG ) {
+		action.sa_handler = SIG_DFL;
+		sigaction(SIGINT, &action, NULL);
+	}
+	sigaction(SIGTERM, NULL, &action);
+	if ( action.sa_handler == SDL_HandleSIG ) {
+		action.sa_handler = SIG_DFL;
+		sigaction(SIGTERM, &action, NULL);
+	}
+#elif HAVE_SIGNAL_H
+	void (*ohandler)(int);
+
+	ohandler = signal(SIGINT, SIG_DFL);
+	if ( ohandler != SDL_HandleSIG )
+		signal(SIGINT, ohandler);
+	ohandler = signal(SIGTERM, SIG_DFL);
+	if ( ohandler != SDL_HandleSIG )
+		signal(SIGTERM, ohandler);
+#endif /* HAVE_SIGNAL_H */
+}
+
+/* This function returns 1 if it's okay to close the application window */
+int SDL_PrivateQuit(void)
+{
+	int posted;
+
+	posted = 0;
+	if ( SDL_ProcessEvents[SDL_QUIT] == SDL_ENABLE ) {
+		SDL_Event event;
+		event.type = SDL_QUIT;
+		if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) {
+			posted = 1;
+			SDL_PushEvent(&event);
+		}
+	}
+	return(posted);
+}
-- 
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