gengxin

2026-09-09 14:47:29 +08:00
parent 4d9da40abd
commit 65755c9e96
832 changed files with 412085 additions and 0 deletions
@@ -0,0 +1,122 @@
+function finiteNumber(value, fallback = 0) {
+  const parsed = Number(value)
+  return Number.isFinite(parsed) ? parsed : fallback
+}
+
+function clamp(value, minimum, maximum) {
+  return Math.min(maximum, Math.max(minimum, value))
+}
+
+/**
+ * 首页使用自定义导航栏，横屏时既要避开左右刘海与底部 Home
+ * Indicator，也要为微信右上角胶囊留下真实空间。CSS 的 env()
+ * 在部分微信横屏机型上只会返回系统安全区，不包含胶囊，因此这里
+ * 以运行时尺寸为准，CSS env() 只作为脚本尚未执行时的兜底。
+ */
+function getHomeLayoutMetrics(windowInfo = {}, menuRect = {}) {
+  const windowWidth = Math.max(320, finiteNumber(windowInfo.windowWidth, 844))
+  const windowHeight = Math.max(240, finiteNumber(windowInfo.windowHeight, 390))
+  const safeArea = windowInfo.safeArea || {}
+
+  const safeLeft = clamp(
+    finiteNumber(safeArea.left, 0),
+    0,
+    windowWidth / 3,
+  )
+  const safeRightEdge = clamp(
+    finiteNumber(safeArea.right, windowWidth),
+    windowWidth * 2 / 3,
+    windowWidth,
+  )
+  const safeRight = clamp(
+    windowWidth - safeRightEdge,
+    0,
+    windowWidth / 3,
+  )
+  const safeTop = Math.max(
+    0,
+    finiteNumber(windowInfo.statusBarHeight, 0),
+    finiteNumber(safeArea.top, 0),
+  )
+  const safeBottomEdge = clamp(
+    finiteNumber(safeArea.bottom, windowHeight),
+    windowHeight * 2 / 3,
+    windowHeight,
+  )
+  const safeBottom = clamp(
+    windowHeight - safeBottomEdge,
+    0,
+    windowHeight / 3,
+  )
+
+  const menuLeft = finiteNumber(menuRect.left, windowWidth)
+  const menuBottom = finiteNumber(menuRect.bottom, 0)
+  const hasMenuRect = (
+    menuLeft > windowWidth / 2
+    && menuLeft < windowWidth
+    && menuBottom > 0
+  )
+  const compactHeight = windowHeight <= 620
+  const horizontalPageGap = compactHeight ? 10 : 14
+  const capsuleGap = compactHeight ? 8 : 10
+
+  const leftInset = Math.ceil(safeLeft + horizontalPageGap)
+  const rightInset = Math.ceil(Math.max(
+    safeRight + horizontalPageGap,
+    hasMenuRect
+      ? windowWidth - menuLeft + capsuleGap
+      : safeRight + horizontalPageGap,
+  ))
+  const topInset = Math.ceil(safeTop + (compactHeight ? 8 : 12))
+  const bottomInset = Math.ceil(safeBottom + (compactHeight ? 7 : 12))
+
+  return {
+    windowWidth,
+    windowHeight,
+    compactHeight,
+    safeLeft,
+    safeRight,
+    safeTop,
+    safeBottom,
+    leftInset,
+    rightInset,
+    topInset,
+    bottomInset,
+    hasMenuRect,
+  }
+}
+
+function getHomeLayoutStyle(metrics = {}) {
+  return [
+    `height:${Math.max(240, finiteNumber(metrics.windowHeight, 390))}px`,
+    `--home-top-inset:${Math.max(0, finiteNumber(metrics.topInset, 8))}px`,
+    `--home-right-inset:${Math.max(0, finiteNumber(metrics.rightInset, 10))}px`,
+    `--home-bottom-inset:${Math.max(0, finiteNumber(metrics.bottomInset, 7))}px`,
+    `--home-left-inset:${Math.max(0, finiteNumber(metrics.leftInset, 10))}px`,
+  ].join(';')
+}
+
+function hasReadingProgress(progress = {}) {
+  const completedChapters = Array.isArray(progress.completedChapters)
+    ? progress.completedChapters
+    : []
+  const completedHotspots = progress.completedHotspots
+    && typeof progress.completedHotspots === 'object'
+    ? progress.completedHotspots
+    : {}
+  const hasCompletedHotspot = Object.values(completedHotspots).some(
+    (ids) => Array.isArray(ids) && ids.length > 0,
+  )
+
+  return (
+    completedChapters.length > 0
+    || finiteNumber(progress.lastChapter, 1) > 1
+    || hasCompletedHotspot
+  )
+}
+
+module.exports = {
+  getHomeLayoutMetrics,
+  getHomeLayoutStyle,
+  hasReadingProgress,
+}