From 02bcc5fa3d3d3362594a2c68f9bf80556b93dd77 Mon Sep 17 00:00:00 2001
From: Bastien Nocera <hadess@hadess.net>
Date: Wed, 19 Oct 2016 15:43:37 +0200
Subject: [PATCH 1/2] shell-app: Add shell_app_launch_context() helper API

This will allow us to implement a way to launch applications
on the discrete GPU for systems where an "Optimus" system exists,
through the caller setting an environment variable.

https://bugzilla.gnome.org/show_bug.cgi?id=773117
---
 src/shell-app.c | 29 +++++++++++++++++++----------
 src/shell-app.h |  4 ++++
 2 files changed, 23 insertions(+), 10 deletions(-)

diff --git a/src/shell-app.c b/src/shell-app.c
index 7f61dc3..7eec4ae 100644
--- a/src/shell-app.c
+++ b/src/shell-app.c
@@ -1227,20 +1227,29 @@ shell_app_launch (ShellApp     *app,
 
   global = shell_global_get ();
   context = shell_global_create_app_launch_context (global, timestamp, workspace);
+  ret = shell_app_launch_context (app, context, error);
+  g_object_unref (context);
+
+  return ret;
+}
+
+gboolean
+shell_app_launch_context (ShellApp           *app,
+                          GAppLaunchContext  *context,
+                          GError            **error)
+{
+  g_return_val_if_fail (app->info != NULL, FALSE);
 
-  ret = g_desktop_app_info_launch_uris_as_manager (app->info, NULL,
-                                                   context,
-                                                   G_SPAWN_SEARCH_PATH,
+  return g_desktop_app_info_launch_uris_as_manager (app->info, NULL,
+                                                    context,
+                                                    G_SPAWN_SEARCH_PATH,
 #ifdef HAVE_SYSTEMD
-                                                   app_child_setup, (gpointer)shell_app_get_id (app),
+                                                    app_child_setup, (gpointer)shell_app_get_id (app),
 #else
-                                                   NULL, NULL,
+                                                    NULL, NULL,
 #endif
-                                                   NULL, NULL,
-                                                   error);
-  g_object_unref (context);
-
-  return ret;
+                                                    NULL, NULL,
+                                                    error);
 }
 
 /**
diff --git a/src/shell-app.h b/src/shell-app.h
index 7fc582a..2a7572a 100644
--- a/src/shell-app.h
+++ b/src/shell-app.h
@@ -56,6 +56,10 @@ gboolean shell_app_launch (ShellApp     *app,
                            int           workspace,
                            GError      **error);
 
+gboolean shell_app_launch_context (ShellApp           *app,
+                                   GAppLaunchContext  *context,
+                                   GError            **error);
+
 void shell_app_launch_action (ShellApp        *app,
                               const char      *action_name,
                               guint            timestamp,
-- 
2.9.3