generated by cgit v1.2.3 (git 2.39.1) at 2025-05-20 21:57:46 +0000
 


(postval);
    }

    /* value changed? */
    if (T->value == NULL || strcmp(T->value, value) != 0) {
	update = 1;
	if (T->value)
	    free(T->value);
	T->value = value;
	T->scroll = 0;		/* reset marquee counter */
    } else {
	free(value);
    }

    /* something has changed and should be updated */
    if (update) {
	/* if there's a marquee scroller active, it has its own */
	/* update callback timer, so we do nothing here; otherwise */
	/* we simply call this scroll callback directly */
	if (T->align != ALIGN_MARQUEE) {
	    widget_text_scroll(Self);
	}
    }

}


int widget_text_init(WIDGET * Self)
{
    char *section;
    char *c;
    WIDGET_TEXT *Text;

    /* prepare config section */
    /* strlen("Widget:")=7 */
    section = malloc(strlen(Self->name) + 8);
    strcpy(section, "Widget:");
    strcat(section, Self->name);

    Text = malloc(sizeof(WIDGET_TEXT));
    memset(Text, 0, sizeof(WIDGET_TEXT));

    /* get raw pre- and postfix (we evaluate it ourselves) */
    Text->prefix = cfg_get_raw(section, "prefix", NULL);
    Text->postfix = cfg_get_raw(section, "postfix", NULL);

    /* compile pre- and postfix */
    Compile(Text->prefix, &Text->pretree);
    Compile(Text->postfix, &Text->posttree);

    /* get raw expression (we evaluate it ourselves) */
    Text->expression = cfg_get_raw(section, "expression", "''");
    Compile(Text->expression, &Text->tree);

    /* field width, default 10 */
    cfg_number(section, "width", 10, 0, -1, &(Text->width));

    /* precision: number of digits after the decimal point (default: none) */
    /* Note: this is the *maximum* precision on small values, */
    /* for larger values the precision may be reduced to fit into the field width. */
    /* The default value 0xC0DE is used to distinguish between numbers and strings: */
    /* if no precision is given, the result is always treated as a string. If a */
    /* precision is specified, the result is treated as a number. */
    cfg_number(section, "precision", 0xC0DE, 0, 80, &(Text->precision));

    /* field alignment: Left (default), Center, Right or Marquee */
    c = cfg_get(section, "align", "L");
    switch (toupper(*c)) {
    case 'L':
	Text->align = ALIGN_LEFT;
	break;
    case 'C':
	Text->align = ALIGN_CENTER;
	break;
    case 'R':
	Text->align = ALIGN_RIGHT;
	break;
    case 'M':
	Text->align = ALIGN_MARQUEE;
	break;
    default:
	error("widget %s has unknown alignment '%s', using 'Left'", section, c);
	Text->align = ALIGN_LEFT;
    }
    free(c);

    /* update interval (msec), default 1 sec, 0 stands for never */
    cfg_number(section, "update", 1000, 0, -1, &(Text->update));
    /* limit update interval to min 10 msec */
    if (Text->update > 0 && Text->update < 10)
	Text->update = 10;

    /* marquee scroller speed: interval (msec), default 500msec */
    if (Text->align == ALIGN_MARQUEE) {
	cfg_number(section, "speed", 500, 10, -1, &(Text->speed));
    }

    /* buffer */
    Text->buffer = malloc(Text->width + 1);

    free(section);
    Self->data = Text;

    /* add update timer, use one-shot if 'update' is zero */
    timer_add(widget_text_update, Self, Text->update, Text->update == 0);

    /* a marquee scroller has its own timer and callback */
    if (Text->align == ALIGN_MARQUEE) {
	timer_add(widget_text_scroll, Self, Text->speed, 0);
    }

    return 0;
}


int widget_text_quit(WIDGET * Self)
{
    WIDGET_TEXT *Text;
    if (Self) {
	Text = Self->data;
	if (Self->data) {
	    DelTree(Text->pretree);
	    DelTree(Text->posttree);
	    DelTree(Text->tree);
	    if (Text->preval)
		free(Text->preval);
	    if (Text->postval)
		free(Text->postval);
	    if (Text->value)
		free(Text->value);
	    if (Text->buffer)
		free(Text->buffer);
	    free(Self->data);
	    Self->data = NULL;
	}

    }
    return 0;

}



WIDGET_CLASS Widget_Text = {
  name:"text",
  type:WIDGET_TYPE_VIS,
  init:widget_text_init,
  draw:NULL,
  quit:widget_text_quit,
};