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view src/video/directfb/SDL_DirectFB_mouse.h @ 5126:d79ff339d1f2

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Fixed bug #1056 (Frequent crashes in Touch events by simply touching the screen) Joseba García Echebarria 2010-12-15 01:55:22 PST I believe the crash is caused by a check not being performed on wether an SDL_Touch element is NULL before using it in the SDL_SendTouchMotion function in src/events/SDL_touch.c around line 400. Judging from the rest of the code, there's a missing if (!touch) { return 0; } before using "touch" as SDL_GetFinger(), SDL_GetFingerIndexId() use touch->num_fingers without checking. I can attach a patch if you like. It seems pretty straightforward, though. I have yet to discover why touch is being returned as NULL as this error is only triggered when an actual gesture has been performed, maybe something related to SDL_AddTouch()?
author Sam Lantinga <slouken@libsdl.org>
date Fri, 28 Jan 2011 10:21:58 -0800
parents f7b03b6838cb
children 164f20ba08eb
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/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2010 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"

#ifndef _SDL_DirectFB_mouse_h
#define _SDL_DirectFB_mouse_h

typedef struct _DFB_CursorData DFB_CursorData;

struct _DFB_CursorData
{
    IDirectFBSurface *surf;
    int hotx;
    int hoty;
};

#define SDL_DFB_CURSORDATA(curs)  DFB_CursorData *curdata = (DFB_CursorData *) ((curs) ? (curs)->driverdata : NULL)

extern void DirectFB_InitMouse(_THIS);
extern void DirectFB_QuitMouse(_THIS);

#endif /* _SDL_DirectFB_mouse_h */

/* vi: set ts=4 sw=4 expandtab: */