1 files changed, 119 insertions, 0 deletions
diff --git a/fedora/.config/yazi/plugins/zoom.yazi/main.lua b/fedora/.config/yazi/plugins/zoom.yazi/main.lua
new file mode 100644
index 0000000..8aea0cd
--- /dev/null
+++ b/fedora/.config/yazi/plugins/zoom.yazi/main.lua
@@ -0,0 +1,119 @@
+--- @since 25.6.11
+
+local get = ya.sync(function(st, url) return st.last == url and st.level end)
+
+local save = ya.sync(function(st, url, new)
+	local h = cx.active.current.hovered
+	if h and h.url == url then
+		st.last, st.level = url, new
+		return true
+	end
+end)
+
+local lock = ya.sync(function(st, url, old, new)
+	if st.last == url and st.level == old then
+		st.level = new
+		return true
+	end
+end)
+
+local move = ya.sync(function(st)
+	local h = cx.active.current.hovered
+	if not h then
+		return
+	end
+
+	if st.last ~= h.url then
+		st.last, st.level = Url(h.url), 0
+	end
+
+	return { url = h.url, level = st.level }
+end)
+
+local function end_(job, err)
+	if not job.old_level then
+		ya.preview_widget(job, err and ui.Text(err):area(job.area):wrap(ui.Wrap.YES))
+	elseif err then
+		ya.notify { title = "Zoom", content = tostring(err), timeout = 5, level = "error" }
+	end
+end
+
+local function canvas(area)
+	local cw, ch = rt.term.cell_size()
+	if not cw then
+		return rt.preview.max_width, rt.preview.max_height
+	end
+
+	return math.min(rt.preview.max_width, math.floor(area.w * cw)),
+		math.min(rt.preview.max_height, math.floor(area.h * ch))
+end
+
+local function peek(_, job)
+	local url = job.file.url
+	local info, err = ya.image_info(url)
+	if not info then
+		return end_(job, Err("Failed to get image info: %s", err))
+	end
+
+	local level = ya.clamp(-10, job.new_level or get(Url(url)) or tonumber(job.args[1]) or 0, 10)
+	local sync = function()
+		if job.old_level then
+			return lock(url, job.old_level, level)
+		else
+			return save(url, level)
+		end
+	end
+
+	local max_w, max_h = canvas(job.area)
+	local min_w, min_h = math.min(max_w, info.w), math.min(max_h, info.h)
+	local new_w = min_w + math.floor(min_w * level * 0.1)
+	local new_h = min_h + math.floor(min_h * level * 0.1)
+	if new_w > max_w or new_h > max_h then
+		if job.old_level then
+			return sync() -- Image larger than available preview area after zooming
+		else
+			new_w, new_h = max_w, max_h -- Run as a previewer, render the image anyway
+		end
+	end
+
+	local tmp = os.tmpname()
+	-- stylua: ignore
+	local status, err = Command("magick"):arg {
+		tostring(url),
+		"-auto-orient", "-strip",
+		"-sample", string.format("%dx%d", new_w, new_h),
+		"-quality", rt.preview.image_quality,
+		string.format("JPG:%s", tmp),
+	}:status()
+
+	if not status then
+		end_(job, Err("Failed to run `magick` command: %s", err))
+	elseif not status.success then
+		end_(job, Err("`magick` command exited with error code %d", status.code))
+	elseif sync() then
+		ya.image_show(Url(tmp), job.area)
+	end
+	end_(job)
+end
+
+local function entry(self, job)
+	local st = move()
+	if not st then
+		return
+	end
+
+	local motion = tonumber(job.args[1]) or 0
+	local new = ya.clamp(-10, st.level + motion, 10)
+	if new ~= st.level then
+		peek(self, {
+			area = ui.area("preview"),
+			args = {},
+			file = { url = st.url }, -- FIXME: use `File` instead of a dummy file
+			skip = 0,
+			new_level = new,
+			old_level = st.level,
+		})
+	end
+end
+
+return { peek = peek, entry = entry }