C++ SDL_Unlock_EventThread函数代码示例

void ph_UpdateMouse(_THIS)
{
    PhCursorInfo_t phcursor;
    short abs_x;
    short abs_y;

    /* Lock the event thread, in multi-threading environments */
    SDL_Lock_EventThread();

    /* synchronizing photon mouse cursor position and SDL mouse position, if cursor appears over window. */
    PtGetAbsPosition(window, &abs_x, &abs_y);
    PhQueryCursor(PhInputGroup(NULL), &phcursor);
    if (((phcursor.pos.x >= abs_x) && (phcursor.pos.x <= abs_x + this->screen->w)) &&
        ((phcursor.pos.y >= abs_y) && (phcursor.pos.y <= abs_y + this->screen->h)))
    {
        SDL_PrivateAppActive(1, SDL_APPMOUSEFOCUS);
        SDL_PrivateMouseMotion(0, 0, phcursor.pos.x-abs_x, phcursor.pos.y-abs_y);
    }
    else
    {
        SDL_PrivateAppActive(0, SDL_APPMOUSEFOCUS);
    }

    /* Unlock the event thread, in multi-threading environments */
    SDL_Unlock_EventThread();
}

SDL_Surface * NX_SetVideoMode (_THIS, SDL_Surface * current,
                int width, int height, int bpp, Uint32 flags)
{
    Dprintf ("enter NX_SetVideoMode\n") ;

    // Lock the event thread, in multi-threading environments
    SDL_Lock_EventThread () ;

    bpp = SDL_Visual.bpp ;
    if (NX_CreateWindow (this, current, width, height, bpp, flags) < 0) {
        current = NULL;
        goto done;
    }

    if (current -> w != width || current -> h != height) {
        current -> w = width ;
        current -> h = height ;
        current -> pitch = SDL_CalculatePitch (current) ;
        NX_ResizeImage (this, current, flags) ;
    }
    current -> flags |= (flags & (SDL_RESIZABLE | SDL_NOFRAME)) ;

  done:
    SDL_Unlock_EventThread () ;

    Dprintf ("leave NX_SetVideoMode\n") ;

    // We're done!
    return current ;
}

static void unlock_display(void)
{
	/* Make sure any X11 transactions are completed */
	SDL_VideoDevice *this = current_video;
	XSync(SDL_Display, False);
	SDL_Unlock_EventThread();
}

// Update the current mouse state and position
static void NX_UpdateMouse (_THIS)
{
    int            x, y ;
    GR_WINDOW_INFO info ;
    GR_SCREEN_INFO si ;


    Dprintf ("enter NX_UpdateMouse\n") ;

    // Lock the event thread, in multi-threading environments
    SDL_Lock_EventThread () ;
    
    GrGetScreenInfo (& si) ;
    GrGetWindowInfo (SDL_Window, & info) ;
    x = si.xpos - info.x ;
    y = si.ypos - info.y ;
    if (x >= 0 && x <= info.width && y >= 0 && y <= info.height) {
        SDL_PrivateAppActive (1, SDL_APPMOUSEFOCUS) ;
        SDL_PrivateMouseMotion (0, 0, x, y);
    } else {
        SDL_PrivateAppActive (0, SDL_APPMOUSEFOCUS) ;
    }

    SDL_Unlock_EventThread () ;
    Dprintf ("leave NX_UpdateMouse\n") ;
}

void SDL_JoystickQuit(void)
{
	const int numsticks = SDL_numjoysticks;
	int i;

	
	SDL_Lock_EventThread();
	SDL_numjoysticks = 0;
	SDL_Unlock_EventThread();

	if (SDL_joysticks != NULL) {
		for (i = 0; i < numsticks; i++) {
			SDL_Joystick *stick = SDL_joysticks[i];
			if (stick && (stick->ref_count >= 1)) {
				stick->ref_count = 1;
				SDL_JoystickClose(stick);
			}
		}
	}

	
	SDL_SYS_JoystickQuit();
	if ( SDL_joysticks ) {
		SDL_free(SDL_joysticks);
		SDL_joysticks = NULL;
		SDL_allocatedjoysticks = 0;
	}
}

SDL_GrabMode ph_GrabInput(_THIS, SDL_GrabMode mode)
{
    SDL_Lock_EventThread();
    mode = ph_GrabInputNoLock(this, mode);
    SDL_Unlock_EventThread();

    return(mode);
}

/* If not NULL, create a black/white window manager cursor */
WMcursor * sdl_netbas_gi_CreateWMCursor (_THIS, Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y)
{
	SDL_Lock_EventThread();
	WMcursor *cursor = (WMcursor *) malloc(sizeof(WMcursor));
	SDL_Unlock_EventThread();
	DEBUG_OUT("sdl_netbas_gi_CreateWMCursor\n");
	return cursor;
}

/* Free a window manager cursor
   This function can be NULL if CreateWMCursor is also NULL.
 */
void sdl_netbas_gi_FreeWMCursor (_THIS, WMcursor *cursor)
{
	SDL_Lock_EventThread();
	if(cursor)
	free(cursor);
	SDL_Unlock_EventThread();
	DEBUG_OUT("sdl_netbas_gi_FreeWMCursor\n");
}

void ph_WarpWMCursor(_THIS, Uint16 x, Uint16 y)
{
    short abs_x, abs_y;

    SDL_Lock_EventThread();
    PtGetAbsPosition( window, &abs_x, &abs_y );
    PhMoveCursorAbs( PhInputGroup(NULL), x + abs_x, y + abs_y );
    SDL_Unlock_EventThread();
}

int X11_SetVidModeGamma(_THIS, float red, float green, float blue)
{
    int result;

    SDL_Lock_EventThread();
    result = X11_SetGammaNoLock(this, red, green, blue);
    SDL_Unlock_EventThread();

    return(result);
}

void X11_FreeWMCursor(_THIS, WMcursor *cursor)
{
	if ( SDL_Display != NULL ) {
		SDL_Lock_EventThread();
		XFreeCursor(SDL_Display, cursor->x_cursor);
		XSync(SDL_Display, False);
		SDL_Unlock_EventThread();
	}
	SDL_free(cursor);
}

/* Set window caption */
void ph_SetCaption(_THIS, const char *title, const char *icon)
{
    SDL_Lock_EventThread();

    /* sanity check for set caption call before window init */
    if (window!=NULL)
    {
        PtSetResource(window, Pt_ARG_WINDOW_TITLE, title, 0);
    }

    SDL_Unlock_EventThread();
}

void ph_SetCaption(_THIS, const char *title, const char *icon)
{
    SDL_Lock_EventThread();

    
    if (window!=NULL)
    {
        PtSetResource(window, Pt_ARG_WINDOW_TITLE, title, 0);
    }

    SDL_Unlock_EventThread();
}

void NX_SetCaption (_THIS, const char * title, const char * icon)
{
    Dprintf ("enter NX_SetCaption\n") ;

    // Lock the event thread, in multi-threading environments
    SDL_Lock_EventThread () ;
    
    if (SDL_Window) 
        GrSetWindowTitle (SDL_Window, title) ;
    
    SDL_Unlock_EventThread () ;
    Dprintf ("leave NX_SetCaption\n") ;
}

void NX_WarpWMCursor(_THIS, Uint16 x, Uint16 y)
{
    GR_WINDOW_INFO info ;

    Dprintf ("enter NX_WarpWMCursor\n") ;
    SDL_Lock_EventThread () ;
    
    GrGetWindowInfo (SDL_Window, & info) ;
    GrMoveCursor (info.x + x, info.y + y) ;

    SDL_Unlock_EventThread () ;
    Dprintf ("leave NX_WarpWMCursor\n") ;
}