[mutter/wip/rstrode/rhel-8.0.0: 111/117] backends/x11: Add disable while typing support for synaptics
- From: Ray Strode <halfline src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [mutter/wip/rstrode/rhel-8.0.0: 111/117] backends/x11: Add disable while typing support for synaptics
- Date: Sun, 17 Feb 2019 17:32:10 +0000 (UTC)
commit b0067b45b989dcfac7f31ad15372b275fde8da88
Author: Rui Matos <tiagomatos gmail com>
Date: Mon Oct 9 18:55:56 2017 +0200
backends/x11: Add disable while typing support for synaptics
This is basically a copy of the old g-s-d mouse plugin code to manage
syndaemon when the synaptics driver is being used.
src/backends/x11/meta-input-settings-x11.c | 112 +++++++++++++++++++++++++++++
1 file changed, 112 insertions(+)
---
diff --git a/src/backends/x11/meta-input-settings-x11.c b/src/backends/x11/meta-input-settings-x11.c
index 5a82edbe6..33abd0c72 100644
--- a/src/backends/x11/meta-input-settings-x11.c
+++ b/src/backends/x11/meta-input-settings-x11.c
@@ -35,6 +35,9 @@
#ifdef HAVE_LIBGUDEV
#include <gudev/gudev.h>
#endif
+#ifdef __linux
+#include <sys/prctl.h>
+#endif
#include <meta/errors.h>
#include "backends/meta-logical-monitor.h"
@@ -44,6 +47,8 @@ typedef struct _MetaInputSettingsX11Private
#ifdef HAVE_LIBGUDEV
GUdevClient *udev_client;
#endif
+ gboolean syndaemon_spawned;
+ GPid syndaemon_pid;
} MetaInputSettingsX11Private;
G_DEFINE_TYPE_WITH_PRIVATE (MetaInputSettingsX11, meta_input_settings_x11,
@@ -332,6 +337,107 @@ change_synaptics_speed (ClutterInputDevice *device,
XCloseDevice (xdisplay, xdevice);
}
+/* Ensure that syndaemon dies together with us, to avoid running several of
+ * them */
+static void
+setup_syndaemon (gpointer user_data)
+{
+#ifdef __linux
+ prctl (PR_SET_PDEATHSIG, SIGHUP);
+#endif
+}
+
+static gboolean
+have_program_in_path (const char *name)
+{
+ gchar *path;
+ gboolean result;
+
+ path = g_find_program_in_path (name);
+ result = (path != NULL);
+ g_free (path);
+ return result;
+}
+
+static void
+syndaemon_died (GPid pid,
+ gint status,
+ gpointer user_data)
+{
+ MetaInputSettingsX11 *settings_x11 = META_INPUT_SETTINGS_X11 (user_data);
+ MetaInputSettingsX11Private *priv =
+ meta_input_settings_x11_get_instance_private (settings_x11);
+ GError *error = NULL;
+
+ if (!g_spawn_check_exit_status (status, &error))
+ {
+ if ((WIFSIGNALED (status) && WTERMSIG (status) != SIGHUP) ||
+ error->domain == G_SPAWN_EXIT_ERROR)
+ g_warning ("Syndaemon exited unexpectedly: %s", error->message);
+ g_error_free (error);
+ }
+
+ g_spawn_close_pid (pid);
+ priv->syndaemon_spawned = FALSE;
+}
+
+static void
+set_synaptics_disable_w_typing (MetaInputSettings *settings,
+ gboolean state)
+{
+ MetaInputSettingsX11 *settings_x11 = META_INPUT_SETTINGS_X11 (settings);
+ MetaInputSettingsX11Private *priv =
+ meta_input_settings_x11_get_instance_private (settings_x11);
+
+ if (state)
+ {
+ GError *error = NULL;
+ GPtrArray *args;
+
+ if (priv->syndaemon_spawned)
+ return;
+
+ if (!have_program_in_path ("syndaemon"))
+ return;
+
+ args = g_ptr_array_new ();
+
+ g_ptr_array_add (args, "syndaemon");
+ g_ptr_array_add (args, "-i");
+ g_ptr_array_add (args, "1.0");
+ g_ptr_array_add (args, "-t");
+ g_ptr_array_add (args, "-K");
+ g_ptr_array_add (args, "-R");
+ g_ptr_array_add (args, NULL);
+
+ /* we must use G_SPAWN_DO_NOT_REAP_CHILD to avoid
+ * double-forking, otherwise syndaemon will immediately get
+ * killed again through (PR_SET_PDEATHSIG when the intermediate
+ * process dies */
+ g_spawn_async (g_get_home_dir (), (char **) args->pdata, NULL,
+ G_SPAWN_SEARCH_PATH|G_SPAWN_DO_NOT_REAP_CHILD, setup_syndaemon, NULL,
+ &priv->syndaemon_pid, &error);
+
+ priv->syndaemon_spawned = (error == NULL);
+ g_ptr_array_free (args, TRUE);
+
+ if (error)
+ {
+ g_warning ("Failed to launch syndaemon: %s", error->message);
+ g_error_free (error);
+ }
+ else
+ {
+ g_child_watch_add (priv->syndaemon_pid, syndaemon_died, settings);
+ }
+ }
+ else if (priv->syndaemon_spawned)
+ {
+ kill (priv->syndaemon_pid, SIGHUP);
+ priv->syndaemon_spawned = FALSE;
+ }
+}
+
static void
meta_input_settings_x11_set_send_events (MetaInputSettings *settings,
ClutterInputDevice *device,
@@ -456,6 +562,12 @@ meta_input_settings_x11_set_disable_while_typing (MetaInputSettings *settings,
{
guchar value = (enabled) ? 1 : 0;
+ if (is_device_synaptics (device))
+ {
+ set_synaptics_disable_w_typing (settings, enabled);
+ return;
+ }
+
change_property (device, "libinput Disable While Typing Enabled",
XA_INTEGER, 8, &value, 1);
}
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