diff src/events/SDL_active.c @ 0:74212992fb08

Initial revision
author Sam Lantinga <slouken@lokigames.com>
date Thu, 26 Apr 2001 16:45:43 +0000
parents
children e8157fcb3114
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/events/SDL_active.c	Thu Apr 26 16:45:43 2001 +0000
@@ -0,0 +1,95 @@
+/*
+    SDL - Simple DirectMedia Layer
+    Copyright (C) 1997, 1998, 1999, 2000, 2001  Sam Lantinga
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License as published by the Free Software Foundation; either
+    version 2 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
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public
+    License along with this library; if not, write to the Free
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+    Sam Lantinga
+    slouken@devolution.com
+*/
+
+#ifdef SAVE_RCSID
+static char rcsid =
+ "@(#) $Id$";
+#endif
+
+/* Application focus/iconification handling code for SDL */
+
+#include <stdio.h>
+#include <string.h>
+
+#include "SDL_events.h"
+#include "SDL_events_c.h"
+
+
+/* These are static for our active event handling code */
+static Uint8 SDL_appstate = 0;
+
+/* Public functions */
+int SDL_AppActiveInit(void)
+{
+	/* Start completely active */
+	SDL_appstate = (SDL_APPACTIVE|SDL_APPINPUTFOCUS|SDL_APPMOUSEFOCUS);
+
+	/* That's it! */
+	return(0);
+}
+
+Uint8 SDL_GetAppState(void)
+{
+	return(SDL_appstate);
+}
+
+/* This is global for SDL_eventloop.c */
+int SDL_PrivateAppActive(Uint8 gain, Uint8 state)
+{
+	int posted;
+	Uint8 new_state;
+
+	/* Modify the current state with the given mask */
+	if ( gain ) {
+		new_state = (SDL_appstate | state);
+	} else {
+		new_state = (SDL_appstate & ~state);
+	}
+
+	/* Drop events that don't change state */
+	if ( new_state == SDL_appstate ) {
+		return(0);
+	}
+
+	/* Update internal active state */
+	SDL_appstate = new_state;
+
+	/* Post the event, if desired */
+	posted = 0;
+	if ( SDL_ProcessEvents[SDL_ACTIVEEVENT] == SDL_ENABLE ) {
+		SDL_Event event;
+		memset(&event, 0, sizeof(event));
+		event.type = SDL_ACTIVEEVENT;
+		event.active.gain = gain;
+		event.active.state = state;
+		if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) {
+			posted = 1;
+			SDL_PushEvent(&event);
+		}
+	}
+
+	/* If we lost keyboard focus, post key-up events */
+	if ( (state & SDL_APPINPUTFOCUS) && !gain ) {
+		SDL_ResetKeyboard();
+	}
+	return(posted);
+}