From 0bf3191262bffdd11fb30d5c3ab075bc6040114d Mon Sep 17 00:00:00 2001
From: bangfire <dwbangfire@gmail.com>
Date: Fri, 14 Feb 2025 21:32:41 +0000
Subject: [PATCH] Janky GNOME workaround and added a fallback kscreen-doctor
 implementation if needed.

---
 distribution/linux/Ryujinx.sh | 29 +++++++++++++++++++----------
 1 file changed, 19 insertions(+), 10 deletions(-)

diff --git a/distribution/linux/Ryujinx.sh b/distribution/linux/Ryujinx.sh
index 2c143bca3..09bfa999b 100755
--- a/distribution/linux/Ryujinx.sh
+++ b/distribution/linux/Ryujinx.sh
@@ -20,29 +20,38 @@ if command -v gamemoderun > /dev/null 2>&1; then
     COMMAND="$COMMAND gamemoderun"
 fi
 
-# Check if user already has a manual Avalonia scaling override or session type is x11
+# Check if user already has a manual Avalonia scaling override or session type is x11.
 if [[ -n "${AVALONIA_GLOBAL_SCALE_FACTOR-}" || "$(echo "$XDG_SESSION_TYPE")" == "x11" ]]; then
     echo "Scaling: Performed by environment, skipping." >&2
 else
-    # Attempt to get desktop scaling from environment (GNOME)
-    if [[ "$(echo "$XDG_CURRENT_DESKTOP")" == "GNOME" ]] && command -v gsettings >/dev/null; then
-        echo -n 'Scaling: GNOME desktop scaling query...' >&2
-        SCALING="$(gsettings get org.gnome.desktop.interface scaling-factor)"
+    # Query monitor config directly (GNOME), default display only.
+    if [[ "$(echo "$XDG_CURRENT_DESKTOP")" == "GNOME" && -f ~/.config/monitors.xml ]] then
+        echo -n 'Scaling: Monitor config located, querying scale...' >&2
+        SCALING="$(grep '<scale' ~/.config/monitors.xml -m 1 | cut -f2 -d">"|cut -f1 -d"<")"
         SCALING="${SCALING##* }"
         echo "found! Factor: ${SCALING}" >&2
 
-    # Attempt to get desktop scaling from X Query (Others)
-    elif command -v xrdb >/dev/null && command -v bc >/dev/null; then
-        echo -n 'Scaling: X FreeType DPI scaling query...' >&2
+    # Fallback to X DPI query for others.
+    # Plasma handles this fine, GNOME will always round up e.g. 1.25 -> 2.00.
+    elif command -v xrdb >/dev/null; then
+        echo -n 'Scaling: Attempting to get scaling from X DPI value...' >&2
         dpi="$(xrdb -get Xft.dpi)"
         if [[ -n "${dpi}" ]]; then
             SCALING=$(echo "scale=2; ${dpi}/96" | bc)
-            echo "found! Factor: ${SCALING}" >&2
         fi
+        echo "found! Factor: ${SCALING}"
+
+    # Query kscreen-doctor for Plasma as a fallback.
+    elif [[ "$(echo "$XDG_CURRENT_DESKTOP")" == "KDE" ]] && command -v kscreen-doctor >/dev/null; then
+        echo -n 'Scaling: Attempting to get Plasma desktop scaling factor...' >&2
+        SCALING="$(kscreen-doctor --outputs | grep "Scale" -m 1)"
+        SCALING="${SCALING##* }"
+        SCALING=$(echo $SCALING | sed 's/\x1B\[[0-9;]*m//g') # Trim ANSI chars from ksd output.
+        echo "found! Factor: ${SCALING}"
     fi
 
     if [[ -z "${SCALING-}" || "${SCALING-}" == "0" ]]; then
-        echo 'Scaling: Unset scaling value, using default scaling.' >&2
+        echo 'Unset invalid scaling value' >&2
         SCALING="1"
     fi