82 lines
1.9 KiB
Lua
82 lines
1.9 KiB
Lua
--- @since 25.6.11
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local get = 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:hash() then
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st.level, st.last = 0, h:hash()
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end
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return {
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url = h.url,
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mime = h:mime() or "",
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level = st.level,
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}
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end)
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local save = ya.sync(function(st, before, after)
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if st.level == before then
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st.level = after
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return true
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end
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end)
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local function fail(...) return ya.notify { title = "Zoom", content = string.format(...), timeout = 5, level = "error" } end
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local function canvas()
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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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local area = ui.area("preview")
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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 entry(_, job)
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local st = get(job.args[1])
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if not st then
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return
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end
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local info, err = ya.image_info(st.url)
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if not info then
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return fail("Failed to get image info: %s", err)
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end
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local motion = tonumber(job.args[1]) or 0
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local level = ya.clamp(-10, st.level + motion, 10)
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local max_w, max_h = canvas()
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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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return -- Image larger than available preview area after zooming
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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(st.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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fail("Failed to run `magick` command: %s", err)
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elseif not status.success then
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fail("`magick` command exited with error code %d", status.code)
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elseif save(st.level, level) then
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ya.image_show(Url(tmp), ui.area("preview"))
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end
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end
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return { entry = entry }
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