import re


def _control_value(el, control):
    """Lit la valeur actuelle d'un réglage à partir de l'élément stocké
    (content / attributs / style), avec repli sur sa valeur par défaut."""
    ctype = control["type"]
    style = el.get("style") or {}

    if ctype == "preset":
        for key, _label, props in control["options"]:
            if all((style.get(k) or "") == (v or "") for k, v in props.items()):
                return key
        return control.get("default")

    if ctype == "toggle_token":
        _kind, name = control["target"].split(":", 1)
        current = style.get(name, "") or ""
        return control["token"] in current.split()

    if ctype == "scale":
        transform = style.get("transform", "") or ""
        m = re.search(r"scale\(([\d.]+)\)", transform)
        return float(m.group(1)) if m else control.get("default", 1)

    if ctype == "size":
        _kind, name = control["target"].split(":", 1)
        raw = style.get(name)
        m = re.match(r"^([\d.]+)(px|%)$", str(raw or ""))
        if m:
            return {"value": float(m.group(1)), "unit": m.group(2)}
        return {"value": control.get("default", 0), "unit": "%"}

    target = control["target"]
    if target == "content":
        return el.get("content") or control.get("default", "")
    kind, name = target.split(":", 1)
    store = el.get("attributes") if kind == "attr" else style
    store = store or {}
    if ctype == "checkbox":
        if name not in store:
            return bool(control.get("default", False))
        return store[name] not in (None, "", control.get("false_value"))
    if ctype == "slider":
        raw = store.get(name)
        if raw is None:
            return control.get("default", 0)
        try:
            return float(str(raw).replace(control.get("unit", ""), "").strip() or 0)
        except ValueError:
            return control.get("default", 0)
    return store.get(name, control.get("default", ""))