Initial Commit

s5e-icons/main.lua

@@ -0,0 +1,679 @@
+--[[----------------------------------------------------------------------------
+  OS4 Icons (S5 eSIM) —— Xiaomi Watch S5 41mm(q63) 的 OS4 图标包 -> Xiaomi Watch S5 eSIM 46mm(p62lte)
+
+  目标固件：miwear.watch.p62lte_v3.112.035_full（480x480，Lua 5.4 宿主）
+  写入目标：两个 ROMFS 分区
+      /dev/app     33 条（vela_app.bin  卷名 app    sb_size 103042192）
+      /dev/health  14 条（vela_health.bin 卷名 health sb_size 206924736）
+  47 条负载每条都恰好等于原槽位长度（144x144 ARGB8888 = 82956 B），
+  所以 ROMFS 的 inode 表 / 后续所有偏移一个字节都不动。
+
+  界面按 480x480 设计（_tools/s5e_pages.py 本机真字体渲染 + 圆屏切边检查 0 越界）。
+
+  真机已验证的底层能力（沿用 S5->S4 那个表盘）:
+    * 宿主不调用 ui.init -> 加载期建界面
+    * SCRIPT_PATH 为空 -> 用 debug.getinfo 反推目录
+    * .face 不解包，资源仍在 resource.bin 里 -> 按偏移读出来用
+    * os.execute / dd 可用；os.execute 的返回值不可靠 -> 一律用内容比对判成败
+------------------------------------------------------------------------------]]
+
+local lvgl = require("lvgl")
+
+local W, H = 480, 480
+local BLK = 4
+
+-- 等长覆盖只保证「偏移」512 对齐；RLE 素材的长度常常不是 4 的倍数（如 1635 / 3047），
+-- 那种记录必须退化成 bs=1（偏移本身对齐，所以 bs=1 也精确）。
+local function ddBlk(off, len)
+  if off % BLK == 0 and len % BLK == 0 then return BLK end
+  return 1
+end
+local DEVS = { app = "/dev/app", health = "/dev/health" }
+local DEVLIST = { "app", "health" }        -- 顺序固定：app 先，health 后
+local TMPH = "/tmp/s5e_head.bin"      -- 版本校验读出的 64 字节
+local TMPW = "/tmp/s5e_wr.bin"        -- 待写入的负载（resource.bin 里抠出来的那一份）
+local TMPB = "/tmp/s5e_back.bin"      -- 写完之后回读出来的那一份
+
+--------------------------------------------------------------------- 自身目录
+local SRC = ""
+if debug and debug.getinfo then
+  local info = debug.getinfo(1, "S")
+  SRC = (info and info.source) or ""
+end
+if type(SRC) ~= "string" then SRC = "" end
+if SRC:sub(1, 1) == "@" then SRC = SRC:sub(2) end
+SRC = SRC:gsub("\\", "/")
+local THIS_DIR = SRC:match("^(.*)/[^/]+$") or ""
+local SP = THIS_DIR ~= "" and (THIS_DIR .. "/") or ""
+local PARENT = SP:gsub("[^/]+/$", "")
+
+local RES = nil
+do
+  local c = { PARENT .. "resource.bin", SP .. "../resource.bin", SP .. "resource.bin" }
+  for i = 1, #c do
+    local f = io.open(c[i], "rb")
+    if f then f:close(); RES = c[i]; break end
+  end
+end
+
+--------------------------------------------------------------------- 资源偏移
+-- UI 图片 { resource.bin 内偏移, 长度, 名字 } —— 由 _tools/s5e_build.py 回填
+local UIIMG = {
+__UIIMG__
+}
+
+-- 负载表：{ 设备, 分区内偏移, 长度, resource.bin 内偏移 } —— 同样由脚本回填
+local PAYTBL = {
+__PAY__
+__RB__
+}
+
+local function prepImages()
+  local paths = {}
+  if not RES then return paths end
+  local f = io.open(RES, "rb")
+  if not f then return paths end
+  for i = 1, #UIIMG do
+    local e = UIIMG[i]
+    f:seek("set", e[1])
+    local d = f:read(e[2])
+    if d and #d == e[2] then
+      local p = "/tmp/s5e_ui_" .. e[3] .. ".bin"
+      local o = io.open(p, "wb")
+      if o then o:write(d); o:close(); paths[e[3]] = p end
+    end
+  end
+  f:close()
+  return paths
+end
+
+local IMG = prepImages()
+
+--------------------------------------------------------------------- 颜色与字体
+local C_GRAY, C_WHITE = '#999999', '#ffffff'
+local C_OK, C_ERR = '#43cf7c', '#d43030'
+local C_PLATE, C_CIRC = 0x002927, 0x4f4f4f
+
+local function getFont(name, size)
+  local f = nil
+  pcall(function() f = lvgl.Font(name, size) end)
+  return f
+end
+
+local F_CLOCK = getFont('MiSans-Semibold', 29)
+local F_TITLE = getFont('MiSans-Medium', 31)
+local F_ITEM  = getFont('MiSans-Medium', 29)
+local F_BODY  = getFont('MiSans-Medium', 25)
+local F_VER   = getFont('MiSans-Medium', 21)
+
+--------------------------------------------------------------------- 按下高亮
+local HL = 0x005149
+local pressed = nil
+local tickCount = 0
+
+local function setBg(obj, c)
+  pcall(function() obj:set { bg_color = c } end)
+end
+
+local function pressRelease()
+  if pressed then
+    setBg(pressed.obj, C_PLATE)
+    pressed = nil
+  end
+end
+
+--------------------------------------------------------------------- 基础
+local ui = {}
+local built = false
+local pages = {}
+local clocks = {}
+local job = { run = false, list = nil, i = 0, ok = 0, errs = 0, skipped = 0,
+              variant = 'replace', bad = {}, done = {}, total = {} }
+local pendingVariant = 'replace'
+local confirmFrom = 'home'
+
+local function newPage()
+  local p = nil
+  pcall(function()
+    p = lvgl.Object(nil, { x = 0, y = 0, w = W, h = H, bg_color = 0x000000,
+                           bg_opa = 255, border_width = 0, pad_all = 0 })
+    p:clear_flag(lvgl.FLAG.SCROLLABLE)
+    p:add_flag(lvgl.FLAG.EVENT_BUBBLE)
+  end)
+  return p
+end
+
+local function show(p)
+  if not p then return end
+  pressRelease()
+  for k, v in pairs(pages) do
+    pcall(function() v:add_flag(lvgl.FLAG.HIDDEN) end)
+  end
+  pcall(function() p:clear_flag(lvgl.FLAG.HIDDEN) end)
+end
+
+local function bind(obj, fn)
+  if not obj then return end
+  local ev = lvgl.EVENT
+  if ev and ev.SHORT_CLICKED then
+    if pcall(function() obj:onevent(ev.SHORT_CLICKED, function() fn() end) end) then return end
+  end
+  if pcall(function() obj:onClicked(function() fn() end) end) then return end
+  pcall(function() obj:onevent(ev and ev.CLICKED, fn) end)
+end
+
+local function bindTap(obj, onTap)
+  if not obj then return end
+  local ok = pcall(function()
+    obj:onPressed(function()
+      setBg(obj, HL)
+      pressed = { obj = obj, t = tickCount }
+    end)
+    obj:onClicked(function()
+      pressRelease()
+      if onTap then onTap() end
+    end)
+  end)
+  if not ok then bind(obj, onTap) end
+end
+
+local function setClickable(o)
+  if not o then return end
+  pcall(function() o:add_flag(lvgl.FLAG.CLICKABLE) end)
+end
+
+local function lab(parent, o)
+  o.text_font = o.text_font or F_BODY
+  local l = nil
+  pcall(function() l = parent:Label(o) end)
+  return l
+end
+
+local function clockLabel(parent)
+  -- 居中不用 text_align（它要的是 lv_text_align_t；传 ALIGN.CENTER 会越界被忽略）
+  -- 改为按真字体量出的宽度手工算 x
+  local l = lab(parent, { x = 201, y = 4, w = 78, h = 46, text = '--:--',
+                          text_color = C_GRAY, font_size = 29, text_font = F_CLOCK })
+  clocks[#clocks + 1] = l
+  return l
+end
+
+local function pageTitle(parent, text, x, w)
+  return lab(parent, { x = x, y = 36, w = w, h = 46, text = text,
+                       text_color = C_WHITE, font_size = 31, text_font = F_TITLE })
+end
+
+local function backArrow(parent, x, onTap)
+  local im = nil
+  if IMG.back then
+    pcall(function() im = parent:Image { src = IMG.back, x = x or 167, y = 44 } end)
+    setClickable(im)
+    bind(im, onTap)
+  end
+  return im
+end
+
+-- 列表项：底板(整块可点) + 圆形遮罩 + 图标 + 标题（pad_all=0 必须，否则子元素右下偏移）
+local function listItem(parent, y, iconkey, title, onTap)
+  local plate = nil
+  pcall(function()
+    plate = parent:Object { x = 50, y = y, w = 379, h = 91, pad_all = 0,
+                            bg_color = C_PLATE, border_width = 0, radius = 35 }
+  end)
+  if plate then
+    if onTap then
+      setClickable(plate)
+      bindTap(plate, onTap)
+    end
+    pcall(function()
+      plate:Object { x = 21, y = 20, w = 52, h = 52,
+                     bg_color = C_CIRC, border_width = 0, radius = 26 }
+    end)
+    if IMG[iconkey] then
+      pcall(function() plate:Image { src = IMG[iconkey], x = 31, y = 30 } end)
+    end
+    lab(plate, { x = 82, y = 26, w = 214, h = 40, text = title,
+                 text_color = C_WHITE, font_size = 29, text_font = F_ITEM })
+  end
+  return plate
+end
+
+local function bigButton(parent, text)
+  local b = nil
+  pcall(function()
+    b = parent:Object { x = 111, y = 376, w = 258, h = 82, pad_all = 0,
+                        bg_color = C_PLATE, border_width = 0, radius = 41 }
+  end)
+  if b then setClickable(b) end
+  -- "确认替换"/"重启手表" 29px 量得 116px -> 居中 x = 111 + (258-116)/2 = 182
+  lab(b, { x = 71, y = 22, w = 126, h = 40, text = text,
+           text_color = C_WHITE, font_size = 29, text_font = F_ITEM })
+  return b
+end
+
+local function clockTick()
+  local t = '--:--'
+  if os and type(os.date) == "function" then
+    local ok, s = pcall(os.date, "%H:%M")
+    if ok and type(s) == "string" then t = s end
+  end
+  for i = 1, #clocks do
+    pcall(function() clocks[i]:set { text = t } end)
+  end
+end
+
+--------------------------------------------------------------------- 外壳
+local function slurp(p, n)
+  local f = io.open(p, "rb")
+  if not f then return nil end
+  local d = f:read(n or "*a")
+  f:close()
+  return d
+end
+
+local function sh(cmd)
+  if type(os.execute) ~= "function" then return -1 end
+  local a, b, c = os.execute(cmd)
+  if type(a) == "number" then return a end
+  if a == true then return 0 end
+  if type(c) == "number" then return c end
+  if type(b) == "number" then return b end
+  return -1
+end
+
+-- 从 resource.bin 里取一段（负载 / 原始字节）
+local function slice(off, len)
+  if not RES then return nil end
+  local f = io.open(RES, "rb")
+  if not f then return nil end
+  f:seek("set", off)
+  local d = f:read(len)
+  f:close()
+  return d
+end
+
+-- 读设备上某偏移处的 head 字节（不写，只读）
+local function readBack(dev, off, len, tmp, bsz)
+  if os.remove then pcall(os.remove, tmp) end
+  sh(string.format("dd if=%s of=%s bs=%d skip=%d count=%d",
+                   DEVS[dev], tmp, bsz or 1, bsz and (off // bsz) or off,
+                   bsz and (len // bsz) or len))
+  return slurp(tmp, len)
+end
+
+--------------------------------------------------------------------- 预检查
+local desc1 = nil
+
+local function setDesc1(txt, color)
+  if not desc1 then return end
+  pcall(function() desc1:set { text = txt, text_color = color } end)
+end
+
+local function doCheck()
+  if not RES then
+    setDesc1('找不到 resource.bin，无法操作。', C_ERR)
+    return false
+  end
+  local list = PAYTBL.pay or {}
+  if #list == 0 then
+    setDesc1('预检查失败：负载表为空。', C_ERR)
+    return false
+  end
+  local msg = {}
+  for i = 1, #DEVLIST do
+    local d = DEVLIST[i]
+    local h = readBack(d, 0, 48, TMPH, 1)
+    if not h or #h < 48 then
+      msg[#msg + 1] = d .. ' 读不到'
+    elseif h:sub(1, 8) ~= "-rom1fs-" then
+      msg[#msg + 1] = d .. ' 头不是 ROMFS'
+    else
+      local z = h:find("\0", 17, true)
+      local vol = h:sub(17, (z or 33) - 1)
+      local size = string.unpack("<I4", h, 9)
+      if vol ~= d then
+        msg[#msg + 1] = d .. ' 卷名是 ' .. vol
+      else
+        msg[#msg + 1] = string.format('%s 可读 %.0fMB', d, size / 1048576)
+      end
+    end
+  end
+  local bad, total = 0, 0
+  for i = 1, #list do
+    local r = list[i]
+    local b = ddBlk(r[2], r[3])
+    if (r[2] % b) ~= 0 or (r[3] % b) ~= 0 then bad = bad + 1 end
+    total = total + r[3]
+  end
+  local head = string.format('预检查 | %d 条 | %.2fMB', #list, total / 1048576)
+  if bad > 0 then
+    setDesc1(head .. string.format('\n%d 项未对齐！', bad), C_ERR)
+    return false
+  end
+  local okAll = true
+  for i = 1, #msg do
+    if msg[i]:find('读不到') or msg[i]:find('不是 ROMFS') or msg[i]:find('卷名') then okAll = false end
+  end
+  -- 抽样版本校验：每个分区取第一条负载，比对设备上真实的 64 字节与原厂字节。
+  -- 这一步能确认"负载偏移是给这一版固件算的"，而且只读、不写任何字节。
+  for i = 1, #DEVLIST do
+    local d = DEVLIST[i]
+    local idx = nil
+    for k = 1, #list do
+      if list[k][1] == d then idx = k break end
+    end
+    if idx then
+      local o = PAYTBL.rb[idx]
+      local p = PAYTBL.pay[idx]
+      local want = o and slice(o[4], 64) or nil
+      local new = p and slice(p[4], 64) or nil
+      local got = o and readBack(d, o[2], 64, TMPH, 1) or nil
+      if want and got and #got >= 64 and got == want then
+        msg[#msg + 1] = d .. ' 原厂✓'
+      elseif new and got and #got >= 64 and got == new then
+        msg[#msg + 1] = d .. ' 已替换✓'
+      else
+        msg[#msg + 1] = d .. ' 抽样×'
+        okAll = false
+      end
+    end
+  end
+  setDesc1(head .. '\n' .. table.concat(msg, ' / '), okAll and C_OK or C_ERR)
+  return okAll
+end
+
+--------------------------------------------------------------------- 替换 / 回滚 / 校验
+local logLabel = nil
+local rebootBtn = nil
+local runningTitle = nil
+local logLines = {}
+
+local function logOut(s)
+  logLines[#logLines + 1] = s
+  while #logLines > 8 do table.remove(logLines, 1) end
+  if logLabel then
+    pcall(function() logLabel:set { text = table.concat(logLines, "\n") } end)
+  end
+end
+
+local function showReboot()
+  if rebootBtn then pcall(function() rebootBtn:clear_flag(lvgl.FLAG.HIDDEN) end) end
+end
+
+-- 一条记录的动作（三条 dd：版本校验读 / 写 / 回读）：
+--   mode='write'    : 先确认设备上现有 64B 等于原厂字节（版本对得上），写入新图标，整段回读比对
+--   mode='rollback' : 反向 —— 先确认现有 64B 等于替换后的字节，再写回原厂字节并回读比对
+-- 判据一律是内容比对，不看 os.execute 的返回值（这台机器上它不可靠）
+local function runOne(i, mode)
+  local srcname = (mode == 'rollback') and 'rb' or 'pay'
+  local wantname = (mode == 'rollback') and 'pay' or 'rb'
+  local rec = PAYTBL[srcname][i]
+  local want = PAYTBL[wantname][i]
+  if not rec or not want then return 'err' end
+  local dev = rec[1]
+  -- 现状认定：等于「原厂字节」（want）或等于「替换后字节」（rec）都算对版。
+  -- 这样重复点替换、或断电后半途重来都不会被判成「版本不符」而卡住。
+  local headW = slice(want[4], 64)
+  local headO = slice(rec[4], 64)
+  if not headW or not headO or #headW < 64 or #headO < 64 then return 'err' end
+  local cur = readBack(dev, rec[2], 64, TMPH, 1)
+  if not cur or #cur < 64 then return 'err' end
+  if cur ~= headW and cur ~= headO then return 'ver' end
+  local blob = slice(rec[4], rec[3])
+  if not blob or #blob ~= rec[3] then return 'err' end
+  -- 先把负载落到 /tmp（resource.bin 内的偏移不保证 4 对齐，所以不能用 dd 直接 skip）
+  local wf = io.open(TMPW, "wb")
+  if not wf then return 'err' end
+  wf:write(blob)
+  wf:close()
+  local b = ddBlk(rec[2], rec[3])
+  sh(string.format("dd if=%s of=%s bs=%d seek=%d count=%d",
+                   TMPW, DEVS[dev], b, rec[2] // b, rec[3] // b))
+  local back = readBack(dev, rec[2], rec[3], TMPB, b)
+  if not back or #back ~= rec[3] or back ~= blob then return 'err' end
+  return 'ok'
+end
+
+local function startJob(variant)
+  if job.run then return end
+  local pay = PAYTBL.pay or {}
+  if #pay == 0 then
+    setDesc1('负载表为空，已中止。', C_ERR)
+    return
+  end
+  job.run, job.i, job.ok, job.errs, job.skipped = true, 0, 0, 0, 0
+  job.variant, job.bad, job.done, job.total = variant, {}, {}, {}
+  job.list = pay
+  for k = 1, #pay do
+    local d = pay[k][1]
+    job.total[d] = (job.total[d] or 0) + 1
+  end
+  logLines = {}
+  logOut((variant == 'rollback') and '> 开始回滚' or '> 开始替换')
+  local _devs = {}
+  for d in pairs(job.total) do _devs[#_devs + 1] = d end
+  table.sort(_devs)
+  local _parts = {}
+  for i = 1, #_devs do
+    _parts[#_parts + 1] = string.format('%s %d 条', _devs[i], job.total[_devs[i]])
+  end
+  logOut('> ' .. table.concat(_parts, ' / '))
+  logOut('> 读取 resource.bin')
+  if rebootBtn then pcall(function() rebootBtn:add_flag(lvgl.FLAG.HIDDEN) end) end
+  if runningTitle then
+    pcall(function()
+      runningTitle:set { text = (variant == 'rollback') and '正在回滚' or '正在替换' }
+    end)
+  end
+  show(pages.running)
+end
+
+local function tick()
+  tickCount = tickCount + 1
+  if pressed and (tickCount - pressed.t) > 40 then pressRelease() end
+  if not job.run or not job.list then return end
+  job.i = job.i + 1
+  local n = #job.list
+  if job.i > n then
+    job.run = false
+    logOut((job.variant == 'rollback') and '> 回滚完毕，请重启手表。'
+                                     or '> 替换完毕，请重启手表。')
+    logOut(string.format('> 成功 %d / 失败 %d（共 %d）', job.ok, job.errs, n))
+    if job.skipped > 0 then
+      logOut(string.format('> 版本不符跳过 %d 条', job.skipped))
+    end
+    logOut(string.format('> app %d/%d  health %d/%d',
+                         job.done.app or 0, job.total.app or 0,
+                         job.done.health or 0, job.total.health or 0))
+    showReboot()
+    return
+  end
+  local dev = job.list[job.i][1]
+  if job.bad[dev] then
+    job.skipped = job.skipped + 1
+    job.errs = job.errs + 1
+  else
+    local r = runOne(job.i, (job.variant == 'rollback') and 'rollback' or 'write')
+    if r == 'ok' then
+      job.ok = job.ok + 1
+      job.done[dev] = (job.done[dev] or 0) + 1
+    elseif r == 'ver' then
+      job.errs = job.errs + 1
+      job.skipped = job.skipped + 1
+      job.bad[dev] = true
+      logOut('> ' .. dev .. ' 版本不符，已跳过')
+    else
+      job.errs = job.errs + 1
+    end
+  end
+  if job.i % 10 == 0 or job.i == n then
+    logOut(string.format('> %d/%d 成 %d 失 %d', job.i, n, job.ok, job.errs))
+  end
+end
+
+--------------------------------------------------------------------- 页面
+local function buildHome()
+  local p = newPage()
+  if not p then return nil end
+  clockLabel(p)
+  pageTitle(p, 'OS4 Icons', 164, 152)
+  listItem(p, 88, 'ic_help', '快速帮助', function() show(pages.help) end)
+  listItem(p, 186, 'ic_replace', '开始替换', function()
+    pendingVariant = 'replace'
+    confirmFrom = 'home'
+    show(pages.confirm)
+  end)
+  listItem(p, 285, 'ic_about', '关于', function() show(pages.about) end)
+  return p
+end
+
+local function buildHelp()
+  local p = newPage()
+  if not p then return nil end
+  clockLabel(p)
+  backArrow(p, 167, function() show(pages.home) end)
+  local t = pageTitle(p, '快速帮助', 188, 124)
+  setClickable(t)
+  bind(t, function() show(pages.home) end)
+
+  listItem(p, 88, 'ic_check', '环境预检查', function() doCheck() end)
+  desc1 = lab(p, { x = 67, y = 182, w = 348, h = 76,
+                   text = '检查 app / health 两个分区\n与 47 条负载的完整性。',
+                   text_color = C_GRAY, font_size = 25, text_font = F_BODY })
+
+  listItem(p, 264, 'ic_rollback', '回滚修改', function()
+    pendingVariant = 'rollback'
+    confirmFrom = 'help'
+    show(pages.confirm)
+  end)
+  lab(p, { x = 67, y = 355, w = 348, h = 36,
+           text = '恢复 47 个图标的原始样式。',
+           text_color = C_GRAY, font_size = 25, text_font = F_BODY })
+  return p
+end
+
+local function buildConfirm()
+  local p = newPage()
+  if not p then return nil end
+  clockLabel(p)
+  local function goBack() show(pages[confirmFrom] or pages.home) end
+  backArrow(p, 167, goBack)
+  local t = pageTitle(p, '开始替换', 188, 124)
+  setClickable(t)
+  bind(t, goBack)
+
+  -- 多色文本不能用 recolor -> 拆成多个标签 + 手工算 x（宽度用真 MiSans 25px 量出）
+  lab(p, { x = 60, y = 93, w = 360, h = 36,
+           text = '替换图标包之前，请先确认自己', text_color = C_GRAY,
+           font_size = 25, text_font = F_BODY })
+  lab(p, { x = 60, y = 126, w = 360, h = 36,
+           text = '的系统版本号为 ', text_color = C_GRAY, font_size = 25, text_font = F_BODY })
+  lab(p, { x = 244, y = 126, w = 120, h = 36, text = '3.112.035',
+           text_color = C_WHITE, font_size = 25, text_font = F_BODY })
+  lab(p, { x = 356, y = 126, w = 40, h = 36, text = '！',
+           text_color = C_GRAY, font_size = 25, text_font = F_BODY })
+  lab(p, { x = 60, y = 196, w = 360, h = 36, text = '请确认自己的手表型号为',
+           text_color = C_GRAY, font_size = 25, text_font = F_BODY })
+  lab(p, { x = 60, y = 229, w = 372, h = 36, text = 'Xiaomi Watch S5 eSIM 46mm',
+           text_color = C_WHITE, font_size = 25, text_font = F_BODY })
+  lab(p, { x = 427, y = 229, w = 40, h = 36, text = '！',
+           text_color = C_GRAY, font_size = 25, text_font = F_BODY })
+  lab(p, { x = 60, y = 331, w = 360, h = 36, text = '搞机有风险，变砖后果自负。',
+           text_color = C_GRAY, font_size = 25, text_font = F_BODY })
+
+  local b = bigButton(p, '确认替换')
+  bindTap(b, function() startJob(pendingVariant) end)
+  return p
+end
+
+local function buildAbout()
+  local p = newPage()
+  if not p then return nil end
+  clockLabel(p)
+  backArrow(p, 198, function() show(pages.home) end)
+  local t = pageTitle(p, '关于', 220, 62)
+  setClickable(t)
+  bind(t, function() show(pages.home) end)
+
+  pcall(function()
+    p:Object { x = 54, y = 81, w = 373, h = 210, pad_all = 0,
+               bg_color = C_PLATE, border_width = 0, radius = 31 }
+  end)
+  if IMG.logo then
+    pcall(function() p:Image { src = IMG.logo, x = 200, y = 111 } end)
+  end
+  lab(p, { x = 170, y = 198, w = 141, h = 40, text = 'OS4 Icons',
+           text_color = C_WHITE, font_size = 29, text_font = F_ITEM })
+  lab(p, { x = 216, y = 234, w = 49, h = 28, text = '1.0.0',
+           text_color = C_GRAY, font_size = 21, text_font = F_VER })
+
+  listItem(p, 300, 'ic_qq', '732681995', nil)
+  return p
+end
+
+local function buildRunning()
+  local p = newPage()
+  if not p then return nil end
+  clockLabel(p)
+  runningTitle = pageTitle(p, '正在替换', 178, 124)
+  logLabel = lab(p, { x = 67, y = 93, w = 348, h = 277, text = '',
+                      text_color = C_WHITE, font_size = 25, text_font = F_BODY })
+  rebootBtn = bigButton(p, '重启手表')
+  if rebootBtn then pcall(function() rebootBtn:add_flag(lvgl.FLAG.HIDDEN) end) end
+  bindTap(rebootBtn, function()
+    logOut('> 正在重启…')
+    sh("sync")
+    sh("reboot")
+  end)
+  return p
+end
+
+--------------------------------------------------------------------- 组装
+local function build()
+  if built then return end
+  built = true
+  pages.home = buildHome()
+  pages.help = buildHelp()
+  pages.confirm = buildConfirm()
+  pages.about = buildAbout()
+  pages.running = buildRunning()
+  if pages.home then show(pages.home) end
+  clockTick()
+  pcall(function()
+    ui.timer = lvgl.Timer { period = 40, repeat_count = -1, cb = function() tick() end }
+    if ui.timer and ui.timer.resume then ui.timer:resume() end
+  end)
+  pcall(function()
+    ui.clockTimer = lvgl.Timer { period = 1000, repeat_count = -1,
+                                 cb = function() clockTick() end }
+    if ui.clockTimer and ui.clockTimer.resume then ui.clockTimer:resume() end
+  end)
+end
+
+local okbuild, errbuild = pcall(build)
+if not okbuild then
+  pcall(function()
+    local r = lvgl.Object(nil, { x = 0, y = 0, w = W, h = H, bg_color = 0x000000,
+                                 bg_opa = 255, border_width = 0 })
+    r:Label { x = 20, y = 20, w = W - 40, h = H - 40,
+              text = 'BUILD FAILED:\n' .. tostring(errbuild),
+              text_color = '#ffffff', font_size = 13, text_font = F_BODY }
+  end)
+end
+
+ui.init = function()
+  pcall(build)
+  return ui.root
+end
+
+function pageOnPause()
+  if ui.timer then pcall(function() ui.timer:pause() end) end
+  if ui.clockTimer then pcall(function() ui.clockTimer:pause() end) end
+end
+
+function pageOnResume()
+  if ui.timer then pcall(function() ui.timer:resume() end) end
+  if ui.clockTimer then pcall(function() ui.clockTimer:resume() end) end
+end
+
+return ui