fixed some quickshell stuff + hypr

hypr/lua/mirror.lua

@@ -0,0 +1,107 @@
+-- Presentation mode: every external output shows the laptop panel.
+--
+-- Toggled from lua/binds/shell.lua. Mirroring is just a `mirror` field on the
+-- monitor rule, so switching it off clears that field and re-applies the specs
+-- from lua/monitors.lua to put the Samsung back where it belongs.
+--
+-- Anything plugged in while mirroring is on gets mirrored too, which is the
+-- usual order at a talk: press the key, then find the HDMI cable.
+
+local monitors = require("lua/monitors")
+
+local M = {}
+
+local function notify(text)
+    hl.notification.create({ text = text, timeout = 3000 })
+end
+
+-- The panel is off while docked with the lid shut, see lua/lid.lua. Mirroring
+-- a disabled output would leave every screen black.
+local function builtin()
+    for _, mon in ipairs(hl.get_monitors()) do
+        if mon.name == monitors.laptop then
+            return mon
+        end
+    end
+    return nil
+end
+
+-- A mirroring output drops out of hl.get_monitors(), so the only place left
+-- to find it is the panel's own `mirrors` list. That list is also the state:
+-- a Lua flag would reset on every config reload while the outputs stay
+-- mirrored.
+local function mirroring(panel)
+    local names = {}
+    for _, mon in ipairs(panel and panel.mirrors or {}) do
+        table.insert(names, mon.name)
+    end
+    return names
+end
+
+-- Outputs keep their own mode while mirroring, and the panel image gets
+-- rescaled to fit it every frame. The Dells at 1920x1200 flicker with that,
+-- so match the panel's resolution; Hyprland falls back to the preferred mode
+-- if the output cannot do it.
+local function mirror_all(panel)
+    local mode = panel.width .. "x" .. panel.height
+    for _, mon in ipairs(monitors.externals_present()) do
+        hl.monitor({ output = mon.name, mirror = monitors.laptop, mode = mode, position = "auto" })
+    end
+end
+
+-- The bar and popouts stay on the outputs they were created for, so
+-- respawn the shell the same way lua/autostart.lua starts it.
+local function restart_clients()
+    hl.exec_cmd("systemctl restart --user hyprpaper")
+    hl.exec_cmd("sh -c 'qs kill; exec uwsm app -- qs'")
+end
+
+-- hl.monitor() only takes effect after the calling handler returns, so
+-- anything that has to see the new layout goes on a timer.
+local function later(fn)
+    hl.timer(fn, { timeout = 500, type = "oneshot" })
+end
+
+-- Clearing `mirror` alone brings the image back, but Hyprland never
+-- re-announces the output to clients: hyprpaper and Quickshell keep seeing
+-- only the panel, however often they restart. Cycling the output through
+-- disabled makes it a fresh wl_output. Undeclared outputs get their auto
+-- defaults back, apply_external() then overrides what lua/monitors.lua knows
+-- better.
+local function unmirror_all(names)
+    for _, name in ipairs(names) do
+        hl.monitor({ output = name, mirror = "", disabled = true })
+    end
+    later(function()
+        for _, name in ipairs(names) do
+            hl.monitor({ output = name, disabled = false, mode = "preferred", position = "auto" })
+        end
+        monitors.apply_external()
+        later(restart_clients)
+    end)
+end
+
+function M.toggle()
+    local panel = builtin()
+    local mirrored = mirroring(panel)
+
+    if #mirrored > 0 then
+        unmirror_all(mirrored)
+        notify("Mirroring off")
+    elseif panel then
+        mirror_all(panel)
+        later(restart_clients)
+        notify("Mirroring " .. monitors.laptop .. " to all screens")
+    else
+        notify("Laptop panel is off, open the lid first")
+    end
+end
+
+hl.on("monitor.added", function()
+    local panel = builtin()
+    if #mirroring(panel) > 0 then
+        mirror_all(panel)
+    end
+end)
+
+return M