view src/SDL.c @ 2860:6ce28e5287e9

Date: Sun, 07 Dec 2008 13:35:23 +0100 From: Couriersud Subject: SDL: Mouse last_x, last_y into SDL_Mouse the attached diff moves the static vars last_x and last_y into SDL_Mouse. These, as far as I understand it, should be tied to the individual mouse. The patch also makes the code check for out of window conditions of mouse->x,y when relative movements are passed to MouseSendMotion. Also attached is the latest DirectFB code (dfb20081208) supporting multiple mice and keyboards. This works quite well with sdlmame now. It however needs more testing with different directfb configurations.
author Sam Lantinga <slouken@libsdl.org>
date Mon, 08 Dec 2008 00:52:12 +0000
parents 99210400e8b9
children b64c1d23039b
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/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2009 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"

/* Initialization code for SDL */

#include "SDL.h"
#include "SDL_fatal.h"
#if !SDL_VIDEO_DISABLED
#include "video/SDL_leaks.h"
#endif

#if SDL_THREAD_PTH
#include <pth.h>
#endif

/* Initialization/Cleanup routines */
#if !SDL_JOYSTICK_DISABLED
extern int SDL_JoystickInit(void);
extern void SDL_JoystickQuit(void);
#endif
#if !SDL_HAPTIC_DISABLED
extern int SDL_HapticInit(void);
extern int SDL_HapticQuit(void);
#endif
#if !SDL_CDROM_DISABLED
extern int SDL_CDROMInit(void);
extern void SDL_CDROMQuit(void);
#endif
#if !SDL_TIMERS_DISABLED
extern void SDL_StartTicks(void);
extern int SDL_TimerInit(void);
extern void SDL_TimerQuit(void);
#endif
#if defined(__WIN32__)
extern int SDL_HelperWindowCreate(void);
extern int SDL_HelperWindowDestroy(void);
#endif

/* The initialized subsystems */
static Uint32 SDL_initialized = 0;
static Uint32 ticks_started = 0;

#ifdef CHECK_LEAKS
int surfaces_allocated = 0;
#endif

int
SDL_InitSubSystem(Uint32 flags)
{
#if !SDL_VIDEO_DISABLED
    /* Initialize the video/event subsystem */
    if ((flags & SDL_INIT_VIDEO) && !(SDL_initialized & SDL_INIT_VIDEO)) {
        if (SDL_VideoInit(NULL, (flags & SDL_INIT_EVENTTHREAD)) < 0) {
            return (-1);
        }
        SDL_initialized |= SDL_INIT_VIDEO;
    }
#else
    if (flags & SDL_INIT_VIDEO) {
        SDL_SetError("SDL not built with video support");
        return (-1);
    }
#endif

#if !SDL_AUDIO_DISABLED
    /* Initialize the audio subsystem */
    if ((flags & SDL_INIT_AUDIO) && !(SDL_initialized & SDL_INIT_AUDIO)) {
        if (SDL_AudioInit(NULL) < 0) {
            return (-1);
        }
        SDL_initialized |= SDL_INIT_AUDIO;
    }
#else
    if (flags & SDL_INIT_AUDIO) {
        SDL_SetError("SDL not built with audio support");
        return (-1);
    }
#endif

#if !SDL_TIMERS_DISABLED
    /* Initialize the timer subsystem */
    if (!ticks_started) {
        SDL_StartTicks();
        ticks_started = 1;
    }
    if ((flags & SDL_INIT_TIMER) && !(SDL_initialized & SDL_INIT_TIMER)) {
        if (SDL_TimerInit() < 0) {
            return (-1);
        }
        SDL_initialized |= SDL_INIT_TIMER;
    }
#else
    if (flags & SDL_INIT_TIMER) {
        SDL_SetError("SDL not built with timer support");
        return (-1);
    }
#endif

#if !SDL_JOYSTICK_DISABLED
    /* Initialize the joystick subsystem */
    if ((flags & SDL_INIT_JOYSTICK) && !(SDL_initialized & SDL_INIT_JOYSTICK)) {
        if (SDL_JoystickInit() < 0) {
            return (-1);
        }
        SDL_initialized |= SDL_INIT_JOYSTICK;
    }
#else
    if (flags & SDL_INIT_JOYSTICK) {
        SDL_SetError("SDL not built with joystick support");
        return (-1);
    }
#endif

#if !SDL_HAPTIC_DISABLED
    /* Initialize the haptic subsystem */
    if ((flags & SDL_INIT_HAPTIC) && !(SDL_initialized & SDL_INIT_HAPTIC)) {
        if (SDL_HapticInit() < 0) {
            return (-1);
        }
        SDL_initialized |= SDL_INIT_HAPTIC;
    }
#else
    if (flags & SDL_INIT_HAPTIC) {
        SDL_SetError("SDL not built with haptic (force feedback) support");
        return (-1);
    }
#endif


#if !SDL_CDROM_DISABLED
    /* Initialize the CD-ROM subsystem */
    if ((flags & SDL_INIT_CDROM) && !(SDL_initialized & SDL_INIT_CDROM)) {
        if (SDL_CDROMInit() < 0) {
            return (-1);
        }
        SDL_initialized |= SDL_INIT_CDROM;
    }
#else
    if (flags & SDL_INIT_CDROM) {
        SDL_SetError("SDL not built with cdrom support");
        return (-1);
    }
#endif
    return (0);
}

int
SDL_Init(Uint32 flags)
{
#if !SDL_THREADS_DISABLED && SDL_THREAD_PTH
    if (!pth_init()) {
        return -1;
    }
#endif

    /* Clear the error message */
    SDL_ClearError();

#if defined(__WIN32__)
    if (SDL_HelperWindowCreate() < 0) {
        return -1;
    }
#endif

    /* Initialize the desired subsystems */
    if (SDL_InitSubSystem(flags) < 0) {
        return (-1);
    }

    /* Everything is initialized */
    if (!(flags & SDL_INIT_NOPARACHUTE)) {
        SDL_InstallParachute();
    }
    return (0);
}

void
SDL_QuitSubSystem(Uint32 flags)
{
    /* Shut down requested initialized subsystems */
#if !SDL_CDROM_DISABLED
    if ((flags & SDL_initialized & SDL_INIT_CDROM)) {
        SDL_CDROMQuit();
        SDL_initialized &= ~SDL_INIT_CDROM;
    }
#endif
#if !SDL_JOYSTICK_DISABLED
    if ((flags & SDL_initialized & SDL_INIT_JOYSTICK)) {
        SDL_JoystickQuit();
        SDL_initialized &= ~SDL_INIT_JOYSTICK;
    }
#endif
#if !SDL_HAPTIC_DISABLED
    if ((flags & SDL_initialized & SDL_INIT_HAPTIC)) {
        SDL_HapticQuit();
        SDL_initialized &= ~SDL_INIT_HAPTIC;
    }
#endif
#if !SDL_TIMERS_DISABLED
    if ((flags & SDL_initialized & SDL_INIT_TIMER)) {
        SDL_TimerQuit();
        SDL_initialized &= ~SDL_INIT_TIMER;
    }
#endif
#if !SDL_AUDIO_DISABLED
    if ((flags & SDL_initialized & SDL_INIT_AUDIO)) {
        SDL_AudioQuit();
        SDL_initialized &= ~SDL_INIT_AUDIO;
    }
#endif
#if !SDL_VIDEO_DISABLED
    if ((flags & SDL_initialized & SDL_INIT_VIDEO)) {
        SDL_VideoQuit();
        SDL_initialized &= ~SDL_INIT_VIDEO;
    }
#endif
}

Uint32
SDL_WasInit(Uint32 flags)
{
    if (!flags) {
        flags = SDL_INIT_EVERYTHING;
    }
    return (SDL_initialized & flags);
}

void
SDL_Quit(void)
{
    /* Quit all subsystems */
#ifdef DEBUG_BUILD
    printf("[SDL_Quit] : Enter! Calling QuitSubSystem()\n");
    fflush(stdout);
#endif

#if defined(__WIN32__)
    SDL_HelperWindowDestroy();
#endif
    SDL_QuitSubSystem(SDL_INIT_EVERYTHING);

#ifdef CHECK_LEAKS
#ifdef DEBUG_BUILD
    printf("[SDL_Quit] : CHECK_LEAKS\n");
    fflush(stdout);
#endif

    /* Print the number of surfaces not freed */
    if (surfaces_allocated != 0) {
        fprintf(stderr, "SDL Warning: %d SDL surfaces extant\n",
                surfaces_allocated);
    }
#endif
#ifdef DEBUG_BUILD
    printf("[SDL_Quit] : SDL_UninstallParachute()\n");
    fflush(stdout);
#endif

    /* Uninstall any parachute signal handlers */
    SDL_UninstallParachute();

#if !SDL_THREADS_DISABLED && SDL_THREAD_PTH
    pth_kill();
#endif
#ifdef DEBUG_BUILD
    printf("[SDL_Quit] : Returning!\n");
    fflush(stdout);
#endif

}

/* Get the library version number */
void
SDL_GetVersion(SDL_version * ver)
{
    SDL_VERSION(ver);
}

#if defined(__OS2__)
/* Building for OS/2 */
#ifdef __WATCOMC__

#define INCL_DOSERRORS
#define INCL_DOSEXCEPTIONS
#include <os2.h>

/* Exception handler to prevent the Audio thread hanging, making a zombie process! */
ULONG _System
SDL_Main_ExceptionHandler(PEXCEPTIONREPORTRECORD pERepRec,
                          PEXCEPTIONREGISTRATIONRECORD pERegRec,
                          PCONTEXTRECORD pCtxRec, PVOID p)
{
    if (pERepRec->fHandlerFlags & EH_EXIT_UNWIND)
        return XCPT_CONTINUE_SEARCH;
    if (pERepRec->fHandlerFlags & EH_UNWINDING)
        return XCPT_CONTINUE_SEARCH;
    if (pERepRec->fHandlerFlags & EH_NESTED_CALL)
        return XCPT_CONTINUE_SEARCH;

    /* Do cleanup at every fatal exception! */
    if (((pERepRec->ExceptionNum & XCPT_SEVERITY_CODE) ==
         XCPT_FATAL_EXCEPTION) && (pERepRec->ExceptionNum != XCPT_BREAKPOINT)
        && (pERepRec->ExceptionNum != XCPT_SINGLE_STEP)) {
        if (SDL_initialized & SDL_INIT_AUDIO) {
            /* This removes the zombie audio thread in case of emergency. */
#ifdef DEBUG_BUILD
            printf
                ("[SDL_Main_ExceptionHandler] : Calling SDL_CloseAudio()!\n");
#endif
            SDL_CloseAudio();
        }
    }
    return (XCPT_CONTINUE_SEARCH);
}


EXCEPTIONREGISTRATIONRECORD SDL_Main_xcpthand =
    { 0, SDL_Main_ExceptionHandler };

/* The main DLL entry for DLL Initialization and Uninitialization: */
unsigned _System
LibMain(unsigned hmod, unsigned termination)
{
    if (termination) {
#ifdef DEBUG_BUILD
/*    printf("[SDL DLL Unintialization] : Removing exception handler\n"); */
#endif
        DosUnsetExceptionHandler(&SDL_Main_xcpthand);
        return 1;
    } else {
#ifdef DEBUG_BUILD
        /* Make stdout and stderr unbuffered! */
        setbuf(stdout, NULL);
        setbuf(stderr, NULL);
#endif
        /* Fire up exception handler */
#ifdef DEBUG_BUILD
/*    printf("[SDL DLL Initialization] : Setting exception handler\n"); */
#endif
        /* Set exception handler */
        DosSetExceptionHandler(&SDL_Main_xcpthand);

        return 1;
    }
}
#endif /* __WATCOMC__ */

#elif defined(__WIN32__)

#if !defined(HAVE_LIBC) || (defined(__WATCOMC__) && defined(BUILD_DLL))
/* Need to include DllMain() on Watcom C for some reason.. */
#define WIN32_LEAN_AND_MEAN
#include <windows.h>

BOOL APIENTRY
_DllMainCRTStartup(HANDLE hModule,
                   DWORD ul_reason_for_call, LPVOID lpReserved)
{
    switch (ul_reason_for_call) {
    case DLL_PROCESS_ATTACH:
    case DLL_THREAD_ATTACH:
    case DLL_THREAD_DETACH:
    case DLL_PROCESS_DETACH:
        break;
    }
    return TRUE;
}
#endif /* building DLL with Watcom C */

#endif /* OS/2 elif __WIN32__ */

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