#import "theme.typ": *

/// 点阵底纹
#let tech-dots(width: 100%, height: 100%, step: 10pt) = box(width: width, height: height, clip: true)[
  #for x in range(40) {
    for y in range(40) {
      place(
        left + top,
        dx: x * step,
        dy: y * step,
        circle(radius: 0.35pt, fill: color-grid),
      )
    }
  }
]

/// 条形码条
#let tech-barcode(width, height, bars: 28) = box(width: width, height: height, clip: true)[
  #for i in range(bars) {
    let w = if calc.rem(i, 4) == 0 { 2.2pt } else if calc.rem(i, 2) == 0 { 1.4pt } else { 0.8pt }
    place(
      left + top,
      dx: i * (width / bars),
      box(width: w, height: 100%, fill: color-ink),
    )
  }
]

/// 等宽标签
#let tech-label(body, fill: color-ink, size: 7pt) = text(
  font: mono-font,
  size: size,
  fill: fill,
  tracking: 0.14em,
)[#body]

/// 章节编号
#let section-tech-id(..nums) = {
  let n = nums.pos()
  let id = if n.len() == 1 {
    let num = n.first()
    if num < 10 { "0" + str(num) } else { str(num) }
  } else if n.len() == 2 {
    str(n.at(0)) + "." + str(n.at(1))
  } else {
    str(n.at(0)) + "." + str(n.at(1)) + "." + str(n.at(2))
  }
  box(fill: color-neon, inset: (x: 5pt, y: 2pt))[
    #text(font: mono-font, size: 7pt, weight: "bold", fill: color-ink)[#id]
  ]
}