console_gui.c

					int dy = compute_drag(&drag->y_start, ev[i].motion.y, 3);
					grabber_move(&env->out.devices[env->out.device_primary], dx, dy);
				} else if (drag->drag_window == DRAG_PIP) {
					/* move the PiP image inside the frames of the enc_in buffers */
					int dx = ev[i].motion.x - drag->x_start;
					int dy = ev[i].motion.y - drag->y_start;
					/* dx and dy value are directly applied to env->out.pip_x and
					env->out.pip_y, so they must work as if the format was cif */
					dx = (double)dx*env->enc_in.w/env->loc_dpy.w;
					dy = (double)dy*env->enc_in.h/env->loc_dpy.h;
					/* sets starts to a new value */
					drag->x_start = ev[i].motion.x;
					drag->y_start = ev[i].motion.y;
					/* ast_log(LOG_WARNING, "moving: %d, %d\n", dx, dy); */
					pip_move(env, dx, dy);
				} else if (drag->drag_window == DRAG_MESSAGE) {
					/* scroll up/down the window */
					int dy = compute_drag(&drag->y_start, ev[i].motion.y, 1);
					move_message_board(gui->bd_msg, dy);
				}
				if (ev[i].type == SDL_MOUSEBUTTONUP)
					drag->drag_window = DRAG_NONE;
				break;
			case SDL_MOUSEBUTTONDOWN:
				handle_mousedown(env, ev[i].button);
				break;
			}
		}
	}
	if (1) {
		struct timeval b, a = ast_tvnow();
		int i;
		//SDL_Lock_EventThread();
		SDL_PumpEvents();
		b = ast_tvnow();
		i = ast_tvdiff_ms(b, a);
		if (i > 3)
			fprintf(stderr, "-------- SDL_PumpEvents took %dms\n", i);
		//SDL_Unlock_EventThread();
	}
}

static SDL_Surface *load_image(const char *file)
{
	SDL_Surface *temp;
 
#ifdef HAVE_SDL_IMAGE
	temp = IMG_Load(file);
#else
	temp = SDL_LoadBMP(file);
#endif
	if (temp == NULL)
		fprintf(stderr, "Unable to load image %s: %s\n",
			file, SDL_GetError());
	return temp;
}

static void keypad_setup(struct gui_info *gui, const char *kp_file);

/* TODO: consistency checks, check for bpp, widht and height */
/* Init the mask image used to grab the action. */
static struct gui_info *gui_init(const char *keypad_file, const char *font)
{
	struct gui_info *gui = ast_calloc(1, sizeof(*gui));

	if (gui == NULL)
		return NULL;
	/* initialize keypad status */
	gui->kb_output = KO_MESSAGE;	/* XXX temp */
	gui->drag.drag_window = DRAG_NONE;
	gui->outfd = -1;

	keypad_setup(gui, keypad_file);
	if (gui->keypad == NULL)	/* no keypad, we are done */
		return gui;
	/* XXX load image */
	if (!ast_strlen_zero(font)) {
		int i;
		SDL_Rect *r;

		gui->font = load_image(font);
		if (!gui->font) {
			ast_log(LOG_WARNING, "Unable to load font %s, no output available\n", font);
			goto error;
		}
		ast_log(LOG_WARNING, "Loaded font %s\n", font);
		/* XXX hardwired constants - 3 rows of 32 chars */
		r = gui->font_rects;
#define FONT_H 20
#define FONT_W 9
		for (i = 0; i < 96; r++, i++) {
                	r->x = (i % 32 ) * FONT_W;
                	r->y = (i / 32 ) * FONT_H;
                	r->w = FONT_W;
                	r->h = FONT_H;
		}
	}

	gui->outfd = open ("/dev/null", O_WRONLY);	/* discard output, temporary */
	if (gui->outfd < 0) {
		ast_log(LOG_WARNING, "Unable output fd\n");
		goto error;
	}
	return gui;

error:
	ast_free(gui);
	return NULL;
}

/* setup an sdl overlay and associated info, return 0 on success, != 0 on error */
static int set_win(SDL_Surface *screen, struct display_window *win, int fmt,
	int w, int h, int x, int y)
{
	win->bmp = SDL_CreateYUVOverlay(w, h, fmt, screen);
	if (win->bmp == NULL)
		return -1;	/* error */
	win->rect.x = x;
	win->rect.y = y;
	win->rect.w = w;
	win->rect.h = h;
	return 0;
}

static int keypad_cfg_read(struct gui_info *gui, const char *val);

static void keypad_setup(struct gui_info *gui, const char *kp_file)
{
	FILE *fd;
	char buf[1024];
	const char region[] = "region";
	int reg_len = strlen(region);
	int in_comment = 0;

	if (gui->keypad)
		return;
	gui->keypad = load_image(kp_file);
	if (!gui->keypad)
		return;
	/* now try to read the keymap from the file. */
	fd = fopen(kp_file, "r");
	if (fd == NULL) {
		ast_log(LOG_WARNING, "fail to open %s\n", kp_file);
		return;
	}
	/*
	 * If the keypad image has a comment field, try to read
	 * the button location from there. The block must start with
	 * a comment (or empty) line, and continue with entries like:
	 *	region = token shape x0 y0 x1 y1 h
	 *	...
	 * (basically, lines have the same format as config file entries).
	 * You can add it to a jpeg file using wrjpgcom
	 */
	while (fgets(buf, sizeof(buf), fd)) {
		char *s;

		if (!strstr(buf, region)) { /* no keyword yet */
			if (!in_comment)	/* still waiting for initial comment block */
				continue;
			else
				break;
		}
		if (!in_comment) {	/* first keyword, reset previous entries */
			keypad_cfg_read(gui, "reset");
			in_comment = 1;
		}
		s = ast_skip_blanks(buf);
		ast_trim_blanks(s);
		if (memcmp(s, region, reg_len))
			break;	/* keyword not found */
		s = ast_skip_blanks(s + reg_len); /* space between token and '=' */
		if (*s++ != '=')	/* missing separator */
			break;
		if (*s == '>')	/* skip '>' if present */
			s++;
		keypad_cfg_read(gui, ast_skip_blanks(s));
	}
	fclose(fd);
}

struct board *board_setup(SDL_Surface *screen, SDL_Rect *dest,
	SDL_Surface *font, SDL_Rect *font_rects);

/*! \brief initialize the boards we have in the keypad */
static void init_board(struct gui_info *gui, struct board **dst, SDL_Rect *r, int dx, int dy)
{
	if (r[0].w == 0 || r[0].h == 0)
		return;	/* not available */
	r[1] = r[0];	/* copy geometry */
	r[1].x += dx;	/* add offset of main window */
	r[1].y += dy;
	if (*dst == NULL) {	/* initial call */
		*dst = board_setup(gui->screen, &r[1], gui->font, gui->font_rects);
	} else {
		/* call a refresh */
	}
}

#ifdef HAVE_X11
/*
 * SDL is not very robust on error handling, so we need to trap ourselves
 * at least the most obvious failure conditions, e.g. a bad SDL_WINDOWID.
 * As of sdl-1.2.13, SDL_SetVideoMode crashes with bad parameters, so
 * we need to do the explicit X calls to make sure the window is correct.
 * And around these calls, we must trap X errors.
 */
static int my_x_handler(Display *d, XErrorEvent *e)
{
	ast_log(LOG_WARNING, "%s error_code %d\n", __FUNCTION__, e->error_code);
	return 0;
}
#endif /* HAVE_X11 */

/*! \brief [re]set the main sdl window, useful in case of resize.
 * We can tell the first from subsequent calls from the value of
 * env->gui, which is NULL the first time.
 */
static void sdl_setup(struct video_desc *env)
{
	int dpy_fmt = SDL_IYUV_OVERLAY;	/* YV12 causes flicker in SDL */
	int depth, maxw, maxh;
	const SDL_VideoInfo *info;
	int kp_w = 0, kp_h = 0;	/* keypad width and height */
	struct gui_info *gui = env->gui;
	
	/* Some helper variables used for filling the SDL window */
	int x0; /* the x coordinate of the center of the keypad */
	int x1; /* userful for calculating of the size of the parent window */
	int y0; /* y coordinate of the keypad, the remote window and the local window */
	int src_wins_tot_w; /* total width of the source windows */
	int i;
	int x; /* useful for the creation of the source windows; */
	
#ifdef HAVE_X11
	const char *e = getenv("SDL_WINDOWID");

	if (!ast_strlen_zero(e)) {
		XWindowAttributes a;
		int (*old_x_handler)(Display *d, XErrorEvent *e) = XSetErrorHandler(my_x_handler);
		Display *d = XOpenDisplay(getenv("DISPLAY"));
		long w = atol(e);
		int success = w ? XGetWindowAttributes(d, w, &a) : 0;

		XSetErrorHandler(old_x_handler);
		if (!success) {
			ast_log(LOG_WARNING, "%s error in window\n", __FUNCTION__);
			return;
		}
	}	
#endif
	/*
	 * initialize the SDL environment. We have one large window
	 * with local and remote video, and a keypad.
	 * At the moment we arrange them statically, as follows:
	 * - top row: thumbnails for local video sources;
	 * - next row: message boards for local video sources
	 * - on the left, the remote video;
	 * - on the center, the keypad
	 * - on the right, the local video
	 * We need to read in the skin for the keypad before creating the main
	 * SDL window, because the size is only known here.
	 */

	if (gui == NULL && SDL_Init(SDL_INIT_VIDEO)) {
 		ast_log(LOG_WARNING, "Could not initialize SDL - %s\n",
                        SDL_GetError());
                /* again not fatal, just we won't display anything */
		return;
	}
	info = SDL_GetVideoInfo();
	/* We want at least 16bpp to support YUV overlays.
	 * E.g with SDL_VIDEODRIVER = aalib the default is 8
	 */
	if (!info || !info->vfmt) {
 		ast_log(LOG_WARNING, "Bad SDL_GetVideoInfo - %s\n",
                        SDL_GetError());
		return;
	}
	depth = info->vfmt->BitsPerPixel;
	if (depth < 16)
		depth = 16;
	if (!gui)
		env->gui = gui = gui_init(env->keypad_file, env->keypad_font);
	if (!gui)
		goto no_sdl;

	if (gui->keypad) {
		if (gui->kp_rect.w > 0 && gui->kp_rect.h > 0) {
			kp_w = gui->kp_rect.w;
			kp_h = gui->kp_rect.h;
		} else {
			kp_w = gui->keypad->w;
			kp_h = gui->keypad->h;
		}
	}
	
	/* total width of the thumbnails */
	src_wins_tot_w = env->out.device_num*(SRC_WIN_W+BORDER)+BORDER;
	
	/* x coordinate of the center of the keypad */
	x0 = MAX(env->rem_dpy.w+kp_w/2+2*BORDER, src_wins_tot_w/2);
	
	/* from center of the keypad to right border */
	x1 = MAX(env->loc_dpy.w+kp_w/2+2*BORDER, src_wins_tot_w/2);
	
	/* total width of the SDL window to create */
	maxw = x0+x1;
	
	/* total height of the mother window to create */
	maxh = MAX( MAX(env->rem_dpy.h, env->loc_dpy.h), kp_h)+2*BORDER;
	maxh += env->out.device_num ? (2*BORDER+SRC_WIN_H+SRC_MSG_BD_H) : 0;
	
	gui->screen = SDL_SetVideoMode(maxw, maxh, depth, 0);
	if (!gui->screen) {
		ast_log(LOG_ERROR, "SDL: could not set video mode - exiting\n");
		goto no_sdl;
	}

#ifdef HAVE_X11
	/*
	 * Annoying as it may be, if SDL_WINDOWID is set, SDL does
	 * not grab keyboard/mouse events or expose or other stuff,
	 * and it does not handle resize either.
	 * So we need to implement workarounds here.
	 */
    do {
	/* First, handle the event mask */
	XWindowAttributes attr;
        long want;
        SDL_SysWMinfo info;
	Display *SDL_Display;
        Window win;

	const char *e = getenv("SDL_WINDOWID");
	if (ast_strlen_zero(e))	 /* no external window, don't bother doing this */
		break;
        SDL_VERSION(&info.version); /* it is important to set the version */
        if (SDL_GetWMInfo(&info) != 1) {
                fprintf(stderr, "no wm info\n");
                break;
        }
	SDL_Display = info.info.x11.display;
	if (SDL_Display == NULL)
		break;
        win = info.info.x11.window;

	/*
	 * A list of events we want.
	 * Leave ResizeRedirectMask to the parent.
	 */
        want = KeyPressMask | KeyReleaseMask | ButtonPressMask |
                           ButtonReleaseMask | EnterWindowMask |
                           LeaveWindowMask | PointerMotionMask |
                           Button1MotionMask |
                           Button2MotionMask | Button3MotionMask |
                           Button4MotionMask | Button5MotionMask |
                           ButtonMotionMask | KeymapStateMask |
                           ExposureMask | VisibilityChangeMask |
                           StructureNotifyMask | /* ResizeRedirectMask | */
                           SubstructureNotifyMask | SubstructureRedirectMask |
                           FocusChangeMask | PropertyChangeMask |
                           ColormapChangeMask | OwnerGrabButtonMask;

        memset(&attr, '\0', sizeof(attr));
	XGetWindowAttributes(SDL_Display, win, &attr);

	/* the following events can be delivered only to one client.
	 * So check which ones are going to someone else, and drop
	 * them from our request.
	 */
	{
	/* ev are the events for a single recipient */
	long ev = ButtonPressMask | ResizeRedirectMask |
			SubstructureRedirectMask;
        ev &= (attr.all_event_masks & ~attr.your_event_mask);
	/* now ev contains 1 for single-recipient events owned by others.
	 * We must clear those bits in 'want'
	 * and then add the bits in 'attr.your_event_mask' to 'want'
	 */
	want &= ~ev;
	want |= attr.your_event_mask;
	}
	XSelectInput(SDL_Display, win, want);

	/* Second, handle resize.
	 * We do part of the things that X11Resize does,
	 * but also generate a ConfigureNotify event so
	 * the owner of the window has a chance to do something
	 * with it.
 	 */
	XResizeWindow(SDL_Display, win, maxw, maxh);
	{
	XConfigureEvent ce = {
		.type = ConfigureNotify,
		.serial = 0,
		.send_event = 1,	/* TRUE */
		.display = SDL_Display,
		.event = win,
		.window = win,
		.x = 0,
		.y = 0,
		.width = maxw,
		.height = maxh,
		.border_width = 0,
		.above = 0,
		.override_redirect = 0 };
	XSendEvent(SDL_Display, win, 1 /* TRUE */, StructureNotifyMask, (XEvent *)&ce);
	}
    } while (0);
#endif /* HAVE_X11 */

	y0 = env->out.device_num ? (3*BORDER+SRC_WIN_H+SRC_MSG_BD_H) : BORDER;
	
	SDL_WM_SetCaption("Asterisk console Video Output", NULL);
	
	/* intialize the windows for local and remote video */
	if (set_win(gui->screen, &gui->win[WIN_REMOTE], dpy_fmt,
			env->rem_dpy.w, env->rem_dpy.h, x0-kp_w/2-BORDER-env->rem_dpy.w, y0))
		goto no_sdl;
	/* unfreeze incoming frames if set (to avoid showing nothing) */
	env->frame_freeze = 0;

	if (set_win(gui->screen, &gui->win[WIN_LOCAL], dpy_fmt,
			env->loc_dpy.w, env->loc_dpy.h,
			x0+kp_w/2+BORDER, y0))
		goto no_sdl;
	
	/* initialize device_num source windows (thumbnails) and boards
	(for a maximum of 9 additional windows and boards) */
	x = x0 - src_wins_tot_w/2 + BORDER;
	for (i = 0; i < env->out.device_num; i++){
		struct thumb_bd *p = &gui->thumb_bd_array[i];
		if (set_win(gui->screen, &gui->win[i+WIN_SRC1], dpy_fmt,
			SRC_WIN_W, SRC_WIN_H, x+i*(BORDER+SRC_WIN_W), BORDER))
			goto no_sdl;
		/* set geometry for the rect for the message board of the device */
		p->rect.w = SRC_WIN_W;
		p->rect.h = SRC_MSG_BD_H;
		p->rect.x = x+i*(BORDER+SRC_WIN_W);
		p->rect.y = 2*BORDER+SRC_WIN_H;
		/* the white color is used as background */
		SDL_FillRect(gui->screen, &p->rect,
			SDL_MapRGB(gui->screen->format, 255, 255, 255));
		/* if necessary, initialize boards for the sources */
		if (!p->board)
			p->board =
				board_setup(gui->screen, &p->rect,
				gui->font, gui->font_rects);
		/* update board rect */
		SDL_UpdateRect(gui->screen, p->rect.x, p->rect.y, p->rect.w, p->rect.h);
	}

	/* display the skin, but do not free it as we need it later to
	restore text areas and maybe sliders too */
	if (gui->keypad) {
		struct SDL_Rect *dest = &gui->win[WIN_KEYPAD].rect;
		struct SDL_Rect *src = (gui->kp_rect.w > 0 && gui->kp_rect.h > 0) ? & gui->kp_rect : NULL;
		/* set the coordinates of the keypad relative to the main screen */
		dest->x = x0-kp_w/2;
		dest->y = y0;
		dest->w = kp_w;
		dest->h = kp_h;
		SDL_BlitSurface(gui->keypad, src, gui->screen, dest);
		init_board(gui, &gui->bd_msg, gui->kp_msg, dest->x, dest->y);
		init_board(gui, &gui->bd_dialed, gui->kp_dialed, dest->x, dest->y);
		SDL_UpdateRects(gui->screen, 1, dest);
	}
	return;

no_sdl:
	/* free resources in case of errors */
	env->gui = cleanup_sdl(gui, env->out.device_num);
}

/*
 * Functions to determine if a point is within a region. Return 1 if success.
 * First rotate the point, with
 *	x' =  (x - x0) * cos A + (y - y0) * sin A
 *	y' = -(x - x0) * sin A + (y - y0) * cos A
 * where cos A = (x1-x0)/l, sin A = (y1 - y0)/l, and
 *	l = sqrt( (x1-x0)^2 + (y1-y0)^2
 * Then determine inclusion by simple comparisons i.e.:
 *	rectangle: x >= 0 && x < l && y >= 0 && y < h
 *	ellipse: (x-xc)^2/l^2 + (y-yc)^2/h2 < 1
 */
static int kp_match_area(const struct keypad_entry *e, int x, int y)
{
	double xp, dx = (e->x1 - e->x0);
	double yp, dy = (e->y1 - e->y0);
	double l = sqrt(dx*dx + dy*dy);
	int ret = 0;

	if (l > 1) { /* large enough */
		xp = ((x - e->x0)*dx + (y - e->y0)*dy)/l;
		yp = (-(x - e->x0)*dy + (y - e->y0)*dx)/l;
		if (e->type == KP_RECT) {
			ret = (xp >= 0 && xp < l && yp >=0 && yp < e->h);
		} else if (e->type == KP_CIRCLE) {
			dx = xp*xp/(l*l) + yp*yp/(e->h*e->h);
			ret = (dx < 1);
		}
	}
#if 0
	ast_log(LOG_WARNING, "result %d [%d] for match %d,%d in type %d p0 %d,%d p1 %d,%d h %d\n",
		ret, e->c, x, y, e->type, e->x0, e->y0, e->x1, e->y1, e->h);
#endif
	return ret;
}

struct _s_k { const char *s; int k; };
static const struct _s_k gui_key_map[] = {
	{"FREEZE",	KEY_FREEZE},
	{"PIP",		KEY_PIP},
	{"PICK_UP",	KEY_PICK_UP },
	{"PICKUP",	KEY_PICK_UP },
        {"HANG_UP",	KEY_HANG_UP },
        {"HANGUP",	KEY_HANG_UP },
        {"MUTE",	KEY_MUTE },
        {"FLASH",	KEY_FLASH },
        {"AUTOANSWER",	KEY_AUTOANSWER },
        {"SENDVIDEO",	KEY_SENDVIDEO },
        {"LOCALVIDEO",	KEY_LOCALVIDEO },
        {"REMOTEVIDEO",	KEY_REMOTEVIDEO },
        {"GUI_CLOSE",	KEY_GUI_CLOSE },
        {"MESSAGEBOARD",	KEY_MESSAGEBOARD },
        {"DIALEDBOARD",	KEY_DIALEDBOARD },
        {"EDITBOARD",	KEY_EDITBOARD },
        {"KEYPAD",	KEY_KEYPAD },	/* x0 y0 w h - active area of the keypad */
        {"MESSAGE",	KEY_MESSAGE },	/* x0 y0 w h - incoming messages */
        {"DIALED",	KEY_DIALED },	/* x0 y0 w h - dialed number */
        {"EDIT",	KEY_EDIT },	/* x0 y0 w h - edit user input */
        {"FONT",	KEY_FONT },	/* x0 yo w h rows cols - location and format of the font */
        {NULL, 0 } };

static int gui_map_token(const char *s)
{
	/* map the string into token to be returned */
	int i = atoi(s);
	struct _s_k *p;
	if (i > 0 || s[1] == '\0')	/* numbers or single characters */
		return (i > 9) ? i : s[0];
	for (p = gui_key_map; p->s; p++) {
		if (!strcasecmp(p->s, s))
			return p->k;
	}
	return KEY_NONE;	/* not found */
}

/*! \brief read a keypad entry line in the format
 *	reset
 *	token circle xc yc diameter
 *	token circle xc yc x1 y1 h	# ellipse, main diameter and height
 *	token rect x0 y0 x1 y1 h	# rectangle with main side and eight
 *	token x0 y0 w h			# horizontal rectangle (short format)
 *					# this is used e.g. for message boards
 * token is the token to be returned, either a character or a symbol
 * as KEY_* above
 * Return 1 on success, 0 on error.
 */
static int keypad_cfg_read(struct gui_info *gui, const char *val)
{
	struct keypad_entry e;
	SDL_Rect *r = NULL;
	char s1[16], s2[16];
	int i, ret = 0; /* default, error */

	if (gui == NULL || val == NULL)
		return 0;

	s1[0] = s2[0] = '\0';
	memset(&e, '\0', sizeof(e));
	i = sscanf(val, "%14s %14s %d %d %d %d %d",
                s1, s2, &e.x0, &e.y0, &e.x1, &e.y1, &e.h);

	e.c = gui_map_token(s1);
	if (e.c == KEY_NONE)
		return 0;	/* nothing found */
	switch (i) {
	default:
		break;
	case 1:	/* only "reset" is allowed */
		if (e.c != KEY_RESET)
			break;
		if (gui->kp)
			gui->kp_used = 0;
		break;
	case 5:
		if (e.c == KEY_KEYPAD)	/* active keypad area */
			r = &gui->kp_rect;
		else if (e.c == KEY_MESSAGE)
			r = gui->kp_msg;
		else if (e.c == KEY_DIALED)
			r = gui->kp_dialed;
		else if (e.c == KEY_EDIT)
			r = gui->kp_edit;
		if (r) {
			r->x = atoi(s2);	/* this becomes x0 */
			r->y = e.x0;		/* this becomes y0 */
			r->w = e.y0;		/* this becomes w  */
			r->h = e.x1;		/* this becomes h  */
			break;
		}
		if (strcasecmp(s2, "circle"))	/* invalid */
			break;
		/* token circle xc yc diameter */
		e.h = e.x1;
		e.y1 = e.y0;	/* map radius in x1 y1 */
		e.x1 = e.x0 + e.h;	/* map radius in x1 y1 */
		e.x0 = e.x0 - e.h;	/* map radius in x1 y1 */
		/* fallthrough */

	case 7:
		if (e.c == KEY_FONT) {	/* font - x0 y0 w h rows cols */
			ast_log(LOG_WARNING, "font not supported yet\n");
			break;
		}
		/* token circle|rect x0 y0 x1 y1 h */
		if (e.x1 < e.x0 || e.h <= 0) {
			ast_log(LOG_WARNING, "error in coordinates\n");
			e.type = 0;
			break;
		}
		if (!strcasecmp(s2, "circle")) {
			/* for a circle we specify the diameter but store center and radii */
			e.type = KP_CIRCLE;
			e.x0 = (e.x1 + e.x0) / 2;
			e.y0 = (e.y1 + e.y0) / 2;
			e.h = e.h / 2;
		} else if (!strcasecmp(s2, "rect")) {
			e.type = KP_RECT;
		} else
			break;
		ret = 1;
	}
	// ast_log(LOG_WARNING, "reading [%s] returns %d %d\n", val, i, ret);
	if (ret == 0)
		return 0;
	if (gui->kp_size == 0) {
		gui->kp = ast_calloc(10, sizeof(e));
		if (gui->kp == NULL) {
			ast_log(LOG_WARNING, "cannot allocate kp\n");
			return 0;
		}
		gui->kp_size = 10;
	}
	if (gui->kp_size == gui->kp_used) { /* must allocate */
		struct keypad_entry *a = ast_realloc(gui->kp, sizeof(e)*(gui->kp_size+10));
		if (a == NULL) {
			ast_log(LOG_WARNING, "cannot reallocate kp\n");
			return 0;
		}
		gui->kp = a;
		gui->kp_size += 10;
	}
	if (gui->kp_size == gui->kp_used)
		return 0;
	gui->kp[gui->kp_used++] = e;
	// ast_log(LOG_WARNING, "now %d regions\n", gui->kp_used);
	return 1;
}
#endif	/* HAVE_SDL */