65 lines
2.5 KiB
Text
65 lines
2.5 KiB
Text
# controls_parts.ludic - what a control shows besides its own parts: its label, with a `note` (a line
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# of help under it) in .ui-labels > .ui-label + .ui-note, and a range's or a number's value as text:
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# `decimals="1"` places, `format="percent"` its place between min and max, and a `unit` after it
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function ct_label(ui_st: mut UiState, n: UiNode) -> void {
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let label = ui_attr_text(n, "label")
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let note = ui_attr_text(n, "note")
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if note == "" {
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if label != "" { push(n.children, ct_part(ui_st, n, "ui-label", ui_tr(ui_st, label))) }
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return
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}
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let both = ct_part(ui_st, n, "ui-labels", "")
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if label != "" { push(both.children, ct_part(ui_st, n, "ui-label", ui_tr(ui_st, label))) }
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push(both.children, ct_part(ui_st, n, "ui-note", ui_tr(ui_st, note)))
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push(n.children, both)
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}
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function ct_value_text(n: UiNode) -> string {
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let v = ui_attr(n, "value")
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if Value.kind(v) == 0 { return "" }
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var f = Value.as_float(v)
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let fmt = ui_attr_text(n, "format")
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if fmt == "percent" {
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let lo = Value.as_float(ui_attr(n, "min"))
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var hi = Value.as_float(ui_attr(n, "max"))
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if hi <= lo { hi = lo + 1.0 }
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f = (f - lo) / (hi - lo) * 100.0
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}
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var s = ""
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if Value.kind(ui_attr(n, "decimals")) != 0 { s = ct_fixed(f, Value.as_int(ui_attr(n, "decimals"))) } else if fmt == "percent" { s = string(int(Math.round(f))) } else { s = vl_text(v) }
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if fmt == "percent" { s = s + "%" }
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return s + ui_attr_text(n, "unit")
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}
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# a number with `places` digits after the point, rounded
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function ct_fixed(f: float, places: int) -> string {
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var k = 1
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for i in 0 .. Math.max(places, 0) { k = k * 10 }
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let neg = f < 0.0
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let whole = int(Math.round(Math.abs(f) * float(k)))
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var s = string(whole / k)
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if places > 0 {
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var frac = string(whole % k)
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while len(frac) < places { frac = "0" + frac }
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s = s + "." + frac
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}
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if neg and whole != 0 { s = "-" + s }
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return s
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}
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# Enter (or A) on a text field: on-submit with what it holds; the focus stays, and the text too
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# unless it says clear-on-submit
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function ct_submit(ui_st: mut UiState, n: UiNode) -> void {
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ui_fire(ui_st, n, "submit", ui_attr(n, "value"))
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if ui_attr_on(n, "clear-on-submit") { ui_fire(ui_st, n, "change", Value.str("")) }
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}
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# the text is exactly i's digits, compared without writing i out
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function ct_is_int(s: string, i: int) -> bool {
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if i < 0 or len(s) == 0 { return false }
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var n = i
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var at = len(s) - 1
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while at >= 0 {
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if s[at] != 48 + n % 10 { return false }
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n = n / 10
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at -= 1
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if n == 0 { return at < 0 }
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}
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return false
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}
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