120 lines
3.0 KiB
Lua
120 lines
3.0 KiB
Lua
--- @since 25.12.29
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local get = ya.sync(function(st, url) return st.last == url and st.level end)
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local save = ya.sync(function(st, url, new)
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local h = cx.active.current.hovered
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if h and h.url == url then
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st.last, st.level = url, new
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return true
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end
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end)
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local lock = ya.sync(function(st, url, old, new)
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if st.last == url and st.level == old then
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st.level = new
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return true
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end
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end)
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local move = ya.sync(function(st)
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local h = cx.active.current.hovered
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if not h then
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return
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end
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if st.last ~= h.url then
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st.last, st.level = Url(h.url), 0
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end
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return { url = h.url, level = st.level }
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end)
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local function end_(job, err)
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if not job.old_level then
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ya.preview_widget(job, err and ui.Text(err):area(job.area):wrap(ui.Wrap.YES))
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elseif err then
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ya.notify { title = "Zoom", content = tostring(err), timeout = 5, level = "error" }
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end
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end
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local function canvas(area)
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local cw, ch = rt.term.cell_size()
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if not cw then
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return rt.preview.max_width, rt.preview.max_height
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end
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return math.min(rt.preview.max_width, math.floor(area.w * cw)),
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math.min(rt.preview.max_height, math.floor(area.h * ch))
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end
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local function peek(_, job)
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local url = job.file.url
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local info, err = ya.image_info(url)
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if not info then
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return end_(job, Err("Failed to get image info: %s", err))
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end
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local level = ya.clamp(-10, job.new_level or get(Url(url)) or tonumber(job.args[1]) or 0, 10)
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local sync = function()
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if job.old_level then
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return lock(url, job.old_level, level)
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else
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return save(url, level)
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end
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end
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local max_w, max_h = canvas(job.area)
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local min_w, min_h = math.min(max_w, info.w), math.min(max_h, info.h)
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local new_w = min_w + math.floor(min_w * level * 0.1)
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local new_h = min_h + math.floor(min_h * level * 0.1)
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if new_w > max_w or new_h > max_h then
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if job.old_level then
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return sync() -- Image larger than available preview area after zooming
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else
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new_w, new_h = max_w, max_h -- Run as a previewer, render the image anyway
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end
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end
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local tmp = os.tmpname()
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-- stylua: ignore
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local status, err = Command("magick"):arg {
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tostring(job.file.path or url), -- TODO: remove `or url`
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"-auto-orient", "-strip",
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"-sample", string.format("%dx%d", new_w, new_h),
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"-quality", rt.preview.image_quality,
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string.format("JPG:%s", tmp),
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}:status()
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if not status then
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end_(job, Err("Failed to run `magick` command: %s", err))
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elseif not status.success then
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end_(job, Err("`magick` command exited with error code %d", status.code))
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elseif sync() then
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ya.image_show(Url(tmp), job.area)
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end
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end_(job)
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end
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local function entry(self, job)
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local st = move()
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if not st then
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return
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end
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local motion = tonumber(job.args[1]) or 0
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local new = ya.clamp(-10, st.level + motion, 10)
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if new ~= st.level then
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peek(self, {
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area = ui.area("preview"),
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args = {},
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file = { url = st.url }, -- FIXME: use `File` instead of a dummy file
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skip = 0,
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new_level = new,
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old_level = st.level,
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})
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end
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end
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return { peek = peek, entry = entry }
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