diff options
Diffstat (limited to 'widgets/disks.lua')
| -rw-r--r-- | widgets/disks.lua | 150 |
1 files changed, 0 insertions, 150 deletions
diff --git a/widgets/disks.lua b/widgets/disks.lua deleted file mode 100644 index 3922188..0000000 --- a/widgets/disks.lua +++ /dev/null @@ -1,150 +0,0 @@ --- Disks: one ring per filesystem, after idea2.png. --- --- Reads a cache file written by bin/disks-sample.sh and never calls statfs --- itself: an unreachable NFS server blocks that call, and blocking the draw --- freezes the whole dashboard. - -local card = require 'lib.card' -local data = require 'lib.data' - -local M = {} - -local CACHE = (os.getenv('XDG_CACHE_HOME') or (os.getenv('HOME') .. '/.cache')) - .. '/udt/disks.txt' - --- mount -> centre glyph and the small text under it. --- --- The icon IS the label: no mount name is drawn, because a Slackware S or a --- house says which filesystem this is faster than the word does. Every --- codepoint here was taken from the old conky config and re-rendered to --- confirm it, rather than guessed: an earlier guess at the Slackware mark --- (F83C) turned out to draw a stomach, and a wrong-but-present codepoint --- fails plausibly rather than visibly. --- --- The two NFS shares are told apart by their server's address, which is read --- from the mount's device field at runtime rather than written here. The --- addresses belong on the screen, not in a public repo, and deriving them also --- means the card keeps working if the LAN is renumbered. It fits: at a 50px --- radius the usable inner width is about 75px and an address measures 58px at --- 10px type. --- --- A mount not listed still draws, with a generic disk glyph and the last path --- segment, so adding one to the sampler needs no change here. -local GLYPH = { - ['/'] = '\u{F318}', -- Slackware - ['/home'] = '\u{F015}', -- house - ['/data'] = '\u{F02CA}', -- hard disk -} -local NFS_GLYPH = '\u{F06F3}' -- network share -local FALLBACK_GLYPH = '\u{F02CA}' - -function M.draw(cr, rect, colors) - local inner = card.card(cr, rect, colors) - local function clamp(v, lo, hi) return math.max(lo, math.min(hi, v)) end - local label_size = clamp(inner.w * 0.030, 10, 16) - - local fs = data.df_parse(data.slurp(CACHE) or '') - if #fs == 0 then - card.notice(cr, inner, colors, 'DISKS', 'no disk data', 'bin/disks-sample.sh') - return - end - - card.font(cr, card.FONT_MONO, label_size, false) - card.title(cr, inner.x, inner.y + label_size, card.ICON.disks, 'DISKS', colors) - - local top = inner.y + label_size * 2.2 - local avail_h = (inner.y + inner.h) - top - - -- All rings share one row: the cell width shrinks as mounts are added and - -- the ring radius follows it, so the layout never wraps. Below the radius - -- where a ring reads, fall back to labelled bars rather than drawing a row - -- of illegible dots. - local n = #fs - local per_row = n - local cell_w = inner.w / per_row - -- 0.27 rather than 0.30: two rows sit under each ring now, not one, and the - -- radius is what gives up the height. - local r = math.min(cell_w * 0.34, avail_h * 0.27) - - if r >= 18 then - for i, e in ipairs(fs) do - -- host is non-nil exactly for a network mount, since a local device is - -- a path and carries no 'server:' prefix. - local glyph = GLYPH[e.mount] or (e.host and NFS_GLYPH) or FALLBACK_GLYPH - local sub = e.host - if not sub and not GLYPH[e.mount] then - sub = (e.mount:match('([^/]+)/?$') or e.mount):upper() - end - local cx = inner.x + cell_w * (i - 0.5) - local cy = top + r + 6 - local colour = card.threshold(e.pct, 25, 75, colors) - - card.ring(cr, cx, cy, r, e.pct / 100, colour, colors) - - -- Glyph at the centre. Drawn at 0.55 of the radius rather than 0.7: the - -- network-share glyph carries a wide horizontal connector that runs past - -- the ring at larger sizes, which reads as a line joining the rings - -- together. - local gsize = r * 0.55 - card.font(cr, card.FONT_MONO, gsize, false) - card.rgba(cr, colors.label) - local gw = card.measure(cr, glyph) - -- Raised when there is text under it, centred when there is not. - card.text(cr, cx - gw / 2, cy + (sub and gsize * 0.10 or gsize * 0.38), glyph) - - -- The address, inside the ring beneath the glyph. Only the NFS shares - -- have one; the local mounts are identified by their icon alone. - if sub then - -- Tied to the card's own label scale rather than a fixed px floor, so - -- every piece of small mono text on the card tracks the same size. - card.font(cr, card.FONT_MONO, clamp(r * 0.20, label_size * 0.7, label_size), false) - card.rgba(cr, colors.label) - local sw_ = card.measure(cr, sub) - card.text(cr, cx - sw_ / 2, cy + r * 0.55, sub) - end - - -- Free on top, total beneath, both centred under the ring. - -- - -- The percentage that used to sit here is gone: the ring already draws - -- it as an angle, and a number repeating it costs a row in a column - -- about 75px wide. Free carries the threshold colour because it is the - -- measured quantity; the total is fixed, so it stays in `value`. One - -- coloured number per column, as the rest of the board reads. - local free_size = label_size - local total_size = label_size * 0.88 - card.font(cr, card.FONT_MONO, free_size, false) - card.rgba(cr, colour) - local free_txt = card.human(e.avail) .. ' free' - local fw = card.measure(cr, free_txt) - card.text(cr, cx - fw / 2, cy + r + free_size * 1.7, free_txt) - - card.font(cr, card.FONT_MONO, total_size, false) - card.rgba(cr, colors.value) - local total_txt = card.human(e.size) - local tw = card.measure(cr, total_txt) - card.text(cr, cx - tw / 2, cy + r + free_size * 1.7 + total_size * 1.4, total_txt) - end - else - local step = label_size * 2.6 - local bar_h = clamp(label_size * 0.5, 4, 8) - local ey = top + label_size - for _, e in ipairs(fs) do - if ey + step > inner.y + inner.h then break end - -- The bar fallback has no room for a ring, so it shows the glyph inline - -- followed by the address or the mount name. - local glyph = GLYPH[e.mount] or (e.host and NFS_GLYPH) or FALLBACK_GLYPH - local name = e.host or (e.mount:match('([^/]+)/?$') or e.mount):upper() - local colour = card.threshold(e.pct, 25, 75, colors) - card.font(cr, card.FONT_MONO, label_size, false) - card.rgba(cr, colors.label) - card.text(cr, inner.x, ey, glyph .. ' ' .. name) - card.rgba(cr, colour) - card.text_right(cr, inner.x + inner.w, ey, - string.format('%s / %s', card.human(e.used), card.human(e.size))) - card.bar(cr, inner.x, ey + label_size * 0.5, inner.w, bar_h, e.pct / 100, colour, colors) - ey = ey + step - end - end -end - -return M |