view src/video/dga/SDL_dgaevents.c @ 816:428f688f2ad2

Date: Fri, 13 Feb 2004 17:03:16 +0100 From: Max Horn Subject: Modifier key fix The internal modifier state can get out of sync with reality. To trigger this, do for example this: 1) Launch an SDL app 2) Alt-click on the desktop (this will hide the SDL app). 3) Bring the SDL app back to the front 4) SDL will still think alt is pressed (and as such will treat left clicks like middle clicks). If you press and release alt, it'll be fine again. The attached patch cures this by rechecking the modifier state whenever we process an event.
author Sam Lantinga <slouken@libsdl.org>
date Fri, 13 Feb 2004 17:57:16 +0000
parents b8d311d90021
children 045f186426e1
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/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2004 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@libsdl.org
*/

#ifdef SAVE_RCSID
static char rcsid =
 "@(#) $Id$";
#endif

/* Handle the event stream, converting DGA events into SDL events */

#include <stdio.h>
#include <X11/Xlib.h>
#include <XFree86/extensions/xf86dga.h>

#include "SDL_sysvideo.h"
#include "SDL_events_c.h"
#include "SDL_dgavideo.h"
#include "SDL_dgaevents_c.h"

/* Heheh we're using X11 event code */
extern int X11_Pending(Display *display);
extern void X11_InitKeymap(void);
extern SDL_keysym *X11_TranslateKey(Display *display, XKeyEvent *xkey,
				    KeyCode kc, SDL_keysym *keysym);

static int DGA_DispatchEvent(_THIS)
{
	int posted;
	SDL_NAME(XDGAEvent) xevent;

	XNextEvent(DGA_Display, (XEvent *)&xevent);

	posted = 0;
	xevent.type -= DGA_event_base;
	switch (xevent.type) {

	    /* Mouse motion? */
	    case MotionNotify: {
		if ( SDL_VideoSurface ) {
			posted = SDL_PrivateMouseMotion(0, 1,
					xevent.xmotion.dx, xevent.xmotion.dy);
		}
	    }
	    break;

	    /* Mouse button press? */
	    case ButtonPress: {
		posted = SDL_PrivateMouseButton(SDL_PRESSED, 
					xevent.xbutton.button, 0, 0);
	    }
	    break;

	    /* Mouse button release? */
	    case ButtonRelease: {
		posted = SDL_PrivateMouseButton(SDL_RELEASED, 
					xevent.xbutton.button, 0, 0);
	    }
	    break;

	    /* Key press or release? */
	    case KeyPress:
	    case KeyRelease: {
		SDL_keysym keysym;
		XKeyEvent xkey;

		SDL_NAME(XDGAKeyEventToXKeyEvent)(&xevent.xkey, &xkey);
		posted = SDL_PrivateKeyboard((xevent.type == KeyPress), 
					X11_TranslateKey(DGA_Display,
							 &xkey, xkey.keycode,
							 &keysym));
	    }
	    break;

	}
	return(posted);
}

void DGA_PumpEvents(_THIS)
{
	/* Keep processing pending events */
	LOCK_DISPLAY();
	while ( X11_Pending(DGA_Display) ) {
		DGA_DispatchEvent(this);
	}
	UNLOCK_DISPLAY();
}

void DGA_InitOSKeymap(_THIS)
{
	X11_InitKeymap();
}