[PATCH 0/1] MR5178: winewayland.drv: set wayland app-id from the process name

[llyyr (＠llyyr)]

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=56000

[PATCH 1/1] winewayland.drv: set wayland app-id from the process name

[llyyr]

From: llyyr

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=56000

Co-authored-by: Ryan Hendrickson 
Co-authored-by: Alexandros Frantzis 
Signed-off-by: llyyr 
---
 dlls/winewayland.drv/wayland_surface.c | 31 ++++++++++++++++++++++++++
 dlls/winewayland.drv/waylanddrv.h      |  1 +
 2 files changed, 32 insertions(+)

diff --git a/dlls/winewayland.drv/wayland_surface.c b/dlls/winewayland.drv/wayland_surface.c
index a955f3688c5..9ae4314adb3 100644
--- a/dlls/winewayland.drv/wayland_surface.c
+++ b/dlls/winewayland.drv/wayland_surface.c
@@ -235,6 +235,33 @@ void wayland_surface_destroy(struct wayland_surface *surface)
     free(surface);
 }

+static void wayland_init_process_name(struct wayland_surface *surface)
+{
+    WCHAR *p, *appname;
+    WCHAR appname_lower[MAX_PATH];
+    DWORD appname_len;
+    DWORD appnamez_size;
+    DWORD utf8_size;
+    int i;
+
+    appname = NtCurrentTeb()->Peb->ProcessParameters->ImagePathName.Buffer;
+    if ((p = wcsrchr(appname, '/'))) appname = p + 1;
+    if ((p = wcsrchr(appname, '\'))) appname = p + 1;
+    appname_len = lstrlenW(appname);
+
+    if (appname_len == 0 || appname_len >= MAX_PATH) return;
+
+    for (i = 0; appname[i]; i++) appname_lower[i] = RtlDowncaseUnicodeChar(appname[i]);
+    appname_lower[i] = 0;
+
+    appnamez_size = (appname_len + 1) * sizeof(WCHAR);
+
+    if (!RtlUnicodeToUTF8N(NULL, 0, &utf8_size, appname_lower, appnamez_size) &&
+        (surface->app_id = malloc(utf8_size)))
+    {
+        RtlUnicodeToUTF8N(surface->app_id, utf8_size, &utf8_size, appname_lower, appnamez_size);
+    }
+}
 /**********************************************************************
  *          wayland_surface_make_toplevel
  *
@@ -253,6 +280,10 @@ void wayland_surface_make_toplevel(struct wayland_surface *surface)
     if (!surface->xdg_toplevel) goto err;
     xdg_toplevel_add_listener(surface->xdg_toplevel, &xdg_toplevel_listener, surface->hwnd);

+    wayland_init_process_name(surface);
+    if (surface->app_id)
+        xdg_toplevel_set_app_id(surface->xdg_toplevel, surface->app_id);
+
     wl_surface_commit(surface->wl_surface);
     wl_display_flush(process_wayland.wl_display);

diff --git a/dlls/winewayland.drv/waylanddrv.h b/dlls/winewayland.drv/waylanddrv.h
index f030f6fc6a0..176b54bd132 100644
--- a/dlls/winewayland.drv/waylanddrv.h
+++ b/dlls/winewayland.drv/waylanddrv.h
@@ -202,6 +202,7 @@ struct wayland_surface
     struct wayland_client_surface *client;
     int buffer_width, buffer_height;
     HCURSOR hcursor;
+    char *app_id;
 };

struct wayland_shm_buffer

[Alexandros Frantzis (＠afrantzis)]

@llyyr The primary mechanism for providing a window title is `xdg_toplevel_set_title`. The `app_id` is used mainly for broad identification and grouping purposes. Some compositors may use the `app_id` for the title, if a title is not available, but many do not. So, in terms of the linked bug, the right solution would be to implement title setting (so basically https://gitlab.winehq.org/afrantzis/wine/-/commit/1f698192c696486ec747bbe095... from the experimental branch).

In terms of this MR:

* Since the process name doesn't change during runtime, I would suggest initializing it just once during startup and making it available to the whole process (i.e., sticking to what the experimental branch and winex11 are doing).
* The commit message subject (after the component) should start with a capital and end with a period.

Thanks!