Class: Clowk::Phlex::Charts::GaugeRadial

Inherits:
Clowk::Phlex::Component show all
Defined in:
lib/clowk/phlex/charts/gauge_radial.rb

Overview

Components::UI::GaugeRadial — semicircle "fuel gauge" for a capacity / percent metric (ported from voodu Metrics::GaugeRadial). The arc fills with the current %, the number sits big in the center and an absolute value (e.g. "13.2 / 42 GB") below it. The fill tints AMBER past 70% and RED past 90% so a resource nearing its ceiling jumps out. Pure server SVG (no JS).

percent: true  → center reads the fill "%".
percent: false → center reads value_label (raw count) instead.

Constant Summary collapse

R =

arc radius

76
CX =

center x

100
CY =

baseline y the arc springs up from

96
SW =

arc stroke width

16

Instance Method Summary collapse

Constructor Details

#initialize(pct:, color: "#5B8DEF", sub_label: nil, max_w: 220, percent: true, value_label: nil) ⇒ GaugeRadial

Returns a new instance of GaugeRadial.



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# File 'lib/clowk/phlex/charts/gauge_radial.rb', line 17

def initialize(pct:, color: "#5B8DEF", sub_label: nil, max_w: 220, percent: true, value_label: nil)
  @pct = clamp(pct.to_f)
  @color = color
  @sub_label = sub_label
  @max_w = max_w
  @percent = percent
  @value_label = value_label.to_s
end

Instance Method Details

#view_template ⇒ Object 



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# File 'lib/clowk/phlex/charts/gauge_radial.rb', line 26

def view_template
  arc = Math::PI * R
  fill = (@pct / 100.0) * arc

  svg(
    viewBox: "0 0 200 116",
    class: "block mx-auto w-full h-auto", style: "max-width: #{@max_w}px;", fill: "none",
    role: "img", "aria-label": "#{@pct.round}%"
  ) do |s|
    s.path(d: arc_path, stroke: "var(--clowk-surface-3)", "stroke-width": SW, "stroke-linecap": "round")
    s.path(
      d: arc_path, stroke: fill_color,
      "stroke-width": SW, "stroke-linecap": "round",
      "stroke-dasharray": "#{fill.round(2)} #{arc.round(2)}"
    )
    s.text(
      x: CX, y: CY - 6, "text-anchor": "middle",
      fill: "var(--clowk-text)", "font-size": "30", "font-weight": "600",
      "font-family": "var(--clowk-font-sans, system-ui, sans-serif)"
    ) { center_label }

    if @sub_label.present?
      s.text(
        x: CX, y: CY + 13, "text-anchor": "middle",
        fill: "var(--clowk-muted)", "font-size": "12",
        "font-family": "var(--clowk-font-mono, ui-monospace, monospace)"
      ) { @sub_label }
    end
  end
end