first pass of hyprland config

config/desktop/hyprland/config.lua.d/01-hyprland-high-dpi-scaling.lua

@@ -0,0 +1,25 @@
+local dotwryn = ...  -- ../config.lua
+---------------------------------------------------------------------
+--
+-- high-dpi scaling : XWayland apps render at 1x and scale themselves
+--
+
+hl.config({
+	xwayland = {
+		force_zero_scaling = true,
+	},
+})
+
+-- force_zero_scaling leaves steam at 1x; match the active monitor's scale instead
+local set_steam_scaling = function()
+	local monitor = hl.get_active_monitor()
+	if monitor == nil or monitor.scale == nil or monitor.scale <= 0 then return end
+
+	hl.env("STEAM_FORCE_DESKTOPUI_SCALING", tostring(monitor.scale))
+end
+
+set_steam_scaling()
+
+for _, event in ipairs({ "monitor.added", "monitor.removed", "monitor.layout_changed" }) do
+	hl.on(event, set_steam_scaling)
+end