- flex-shrink: a line whose children want more room than it has takes it back from those that shrink, in proportion to shrink times size and never below a min size, a fixed size or the content. A scroll box shrinks (and scrolls), and a box in a column shrinks as far as the scroll boxes inside it let it, so a list in a column takes the room its siblings leave with no height. `flex: grow shrink`, and `flex-shrink` by name. - A row wider than its room measures its texts (and boxes without a width) again in the room the rest leave them, so a line wraps beside an icon. - calc() with + - * / and brackets over px, %, em, rem, vw, vh, plain numbers and var(); a width or height keeps its percentage, taken of the room it is given. Lengths lists (padding, margin) keep a calc()'s spaces. - `order` places a box's children without touching the tree. - width: 0 and height: 0 are 0: an unset size is UI_AUTO now, not 0. - A component root that is itself a component takes each user's class, style and id in turn (the outermost's id wins), and the rules of all their sheets are weighed by specificity together; a user's rule wins a tie. The parent's sheet used to override the child's whatever its specificity, and a middle component's sheet was lost. - The default sheet lays .ui-track out as a row, so a range's fill is as tall as its track and a checked box's knob goes right; a range's thumb is centred on the fill's end. - ui_boxes.ludic. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
49 lines
1.7 KiB
Text
49 lines
1.7 KiB
Text
# build_class.ludic - a Ludic component's instance built: the parent's attributes are its props (id,
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# class and style go on its root element instead, styled by the parent's sheet as well as its own),
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# its model is its props, state and fields, and its template reads nothing else
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function bd_class(k: UiTpl, e: UiEnv, key: string, out: []UiNode) -> void {
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let cls = k.cls
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uc_load(cls)
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let it = in_get(key, cls)
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let props = Value.object()
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for i in 0 .. len(k.keys) {
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let a = k.keys[i]
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if a != "class" and a != "style" and a != "id" { Value.put(props, a, ui_eval(k.vals[i], e)) }
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}
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cls.props(it.ptr, props)
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let ce = env_new(null)
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ce.model = cls.model(it.ptr)
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ce.inst = it
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ce.ctx = e.ctx
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ce.slot = k
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ce.slot_env = e
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ce.on_names = k.on_keys
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ce.on_acts = k.on_acts
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ce.on_envs = new []UiEnv
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for i in 0 .. len(k.on_keys) { push(ce.on_envs, e) }
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lc_note(key, k.on_keys, k.on_acts, e)
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let at = len(out)
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let root = new []UiTpl
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push(root, cls.root)
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bd_kids(root, ce, key, out)
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if len(out) > at { bd_pass_down(out[at], k, e) }
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}
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# <Card class="wide" style="margin: 4px" id="c"> puts those on the card's own root element; when that
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# root is itself a component, each user in turn adds theirs (the outermost's id wins)
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function bd_pass_down(n: UiNode, k: UiTpl, e: UiEnv) -> void {
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let c = tpl_attr(k, "class")
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if c != null {
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let parts = lss_split(ui_eval_text(c, e), 32)
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for i in 0 .. len(parts) {
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if len(parts[i]) > 0 { push(n.classes, parts[i]) }
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}
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}
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let id = tpl_attr(k, "id")
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if id != null { n.id = ui_eval_text(id, e) }
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let up = new UiPass
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up.sheet = k.sheet
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up.style = k.style
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up.env = e
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if n.ups == null { n.ups = new []UiPass }
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push(n.ups, up)
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}
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