From 4f7ed7e7063625e441270d571cfd8cb3327b145a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mart=C3=ADn=20Fern=C3=A1ndez?=
 <975883+pazos@users.noreply.github.com>
Date: Sat, 2 Jul 2022 21:12:05 +0200
Subject: [PATCH] SDL: set WM_CLASS on Wayland/X11 (#9280)

---
 frontend/device/sdl/device.lua | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/frontend/device/sdl/device.lua b/frontend/device/sdl/device.lua
index 28cb08b7d..c5f421cea 100644
--- a/frontend/device/sdl/device.lua
+++ b/frontend/device/sdl/device.lua
@@ -1,8 +1,16 @@
 local Event = require("ui/event")
 local Generic = require("device/generic/device")
 local SDL = require("ffi/SDL2_0")
+local ffi = require("ffi")
 local logger = require("logger")
 
+-- SDL computes WM_CLASS on X11/Wayland based on process's binary name.
+-- Some desktop environments rely on WM_CLASS to name the app and/or to assign the proper icon.
+if jit.os == "Linux" or jit.os == "BSD" or jit.os == "POSIX" then
+    if not os.getenv("SDL_VIDEO_WAYLAND_WMCLASS") then ffi.C.setenv("SDL_VIDEO_WAYLAND_WMCLASS", "KOReader", 1) end
+    if not os.getenv("SDL_VIDEO_X11_WMCLASS") then ffi.C.setenv("SDL_VIDEO_X11_WMCLASS", "KOReader", 1) end
+end
+
 local function yes() return true end
 local function no() return false end
 local function notOSX() return jit.os ~= "OSX" end