[gnome-control-center] wacom: Add gsd-input-helper.[ch] from g-s-d
- From: Bastien Nocera <hadess src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gnome-control-center] wacom: Add gsd-input-helper.[ch] from g-s-d
- Date: Mon, 12 Dec 2011 18:20:23 +0000 (UTC)
commit 6296a0f522c2a594b9074346355f7d8de7572b67
Author: Bastien Nocera <hadess hadess net>
Date: Mon Dec 12 18:18:20 2011 +0000
wacom: Add gsd-input-helper.[ch] from g-s-d
panels/wacom/Makefile.am | 6 +-
panels/wacom/gsd-input-helper.c | 421 +++++++++++++++++++++++++++++++++++++++
panels/wacom/gsd-input-helper.h | 77 +++++++
3 files changed, 503 insertions(+), 1 deletions(-)
---
diff --git a/panels/wacom/Makefile.am b/panels/wacom/Makefile.am
index ee66cc1..ba4ec69 100644
--- a/panels/wacom/Makefile.am
+++ b/panels/wacom/Makefile.am
@@ -22,6 +22,8 @@ libwacom_properties_la_SOURCES = \
cc-wacom-page.h \
gsd-wacom-device.c \
gsd-wacom-device.h \
+ gsd-input-helper.c \
+ gsd-input-helper.h \
cc-wacom-nav-button.c \
cc-wacom-nav-button.h
@@ -37,7 +39,9 @@ test_wacom_SOURCES = \
cc-wacom-nav-button.c \
cc-wacom-nav-button.h \
gsd-wacom-device.c \
- gsd-wacom-device.h
+ gsd-wacom-device.h \
+ gsd-input-helper.c \
+ gsd-input-helper.h
test_wacom_CPPFLAGS = $(INCLUDES)
test_wacom_LDADD = $(PANEL_LIBS) $(WACOM_PANEL_LIBS)
diff --git a/panels/wacom/gsd-input-helper.c b/panels/wacom/gsd-input-helper.c
new file mode 100644
index 0000000..47e9931
--- /dev/null
+++ b/panels/wacom/gsd-input-helper.c
@@ -0,0 +1,421 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2010 Bastien Nocera <hadess hadess net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#include "config.h"
+
+#include <gdk/gdk.h>
+#include <gdk/gdkx.h>
+
+#include <sys/types.h>
+#include <X11/Xatom.h>
+#include <X11/extensions/XInput2.h>
+
+#include "gsd-input-helper.h"
+
+#define INPUT_DEVICES_SCHEMA "org.gnome.settings-daemon.peripherals.input-devices"
+#define KEY_HOTPLUG_COMMAND "hotplug-command"
+
+typedef gboolean (* InfoIdentifyFunc) (XDeviceInfo *device_info);
+typedef gboolean (* DeviceIdentifyFunc) (XDevice *xdevice);
+
+gboolean
+device_set_property (XDevice *xdevice,
+ const char *device_name,
+ PropertyHelper *property)
+{
+ int rc, i;
+ Atom prop;
+ Atom realtype;
+ int realformat;
+ unsigned long nitems, bytes_after;
+ unsigned char *data;
+
+ prop = XInternAtom (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()),
+ property->name, False);
+ if (!prop)
+ return FALSE;
+
+ gdk_error_trap_push ();
+
+ rc = XGetDeviceProperty (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()),
+ xdevice, prop, 0, property->nitems, False,
+ XA_INTEGER, &realtype, &realformat, &nitems,
+ &bytes_after, &data);
+
+ if (rc != Success ||
+ realtype != XA_INTEGER ||
+ realformat != property->format ||
+ nitems < property->nitems) {
+ gdk_error_trap_pop_ignored ();
+ g_warning ("Error reading property \"%s\" for \"%s\"", property->name, device_name);
+ return FALSE;
+ }
+
+ for (i = 0; i < nitems; i++) {
+ switch (property->format) {
+ case 8:
+ data[i] = property->data.c[i];
+ break;
+ case 32:
+ ((long*)data)[i] = property->data.i[i];
+ break;
+ }
+ }
+
+ XChangeDeviceProperty (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()),
+ xdevice, prop, XA_INTEGER, realformat,
+ PropModeReplace, data, nitems);
+
+ if (gdk_error_trap_pop ()) {
+ g_warning ("Error in setting \"%s\" for \"%s\"", property->name, device_name);
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+static gboolean
+supports_xinput_devices_with_opcode (int *opcode)
+{
+ gint op_code, event, error;
+ gboolean retval;
+
+ retval = XQueryExtension (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()),
+ "XInputExtension",
+ &op_code,
+ &event,
+ &error);
+ if (opcode)
+ *opcode = op_code;
+
+ return retval;
+}
+
+gboolean
+supports_xinput_devices (void)
+{
+ return supports_xinput_devices_with_opcode (NULL);
+}
+
+gboolean
+supports_xinput2_devices (int *opcode)
+{
+ int major, minor;
+
+ if (supports_xinput_devices_with_opcode (opcode) == FALSE)
+ return FALSE;
+
+ gdk_error_trap_push ();
+
+ major = 2;
+ minor = 0;
+
+ if (XIQueryVersion (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), &major, &minor) != Success) {
+ gdk_error_trap_pop_ignored ();
+ return FALSE;
+ }
+ gdk_error_trap_pop_ignored ();
+
+ if ((major * 1000 + minor) < (2000))
+ return FALSE;
+
+ return TRUE;
+}
+
+gboolean
+device_is_touchpad (XDevice *xdevice)
+{
+ Atom realtype, prop;
+ int realformat;
+ unsigned long nitems, bytes_after;
+ unsigned char *data;
+
+ /* we don't check on the type being XI_TOUCHPAD here,
+ * but having a "Synaptics Off" property should be enough */
+
+ prop = XInternAtom (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), "Synaptics Off", False);
+ if (!prop)
+ return FALSE;
+
+ gdk_error_trap_push ();
+ if ((XGetDeviceProperty (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), xdevice, prop, 0, 1, False,
+ XA_INTEGER, &realtype, &realformat, &nitems,
+ &bytes_after, &data) == Success) && (realtype != None)) {
+ gdk_error_trap_pop_ignored ();
+ XFree (data);
+ return TRUE;
+ }
+ gdk_error_trap_pop_ignored ();
+
+ return FALSE;
+}
+
+gboolean
+device_info_is_touchpad (XDeviceInfo *device_info)
+{
+ return (device_info->type == XInternAtom (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), XI_TOUCHPAD, False));
+}
+
+gboolean
+device_info_is_touchscreen (XDeviceInfo *device_info)
+{
+ return (device_info->type == XInternAtom (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), XI_TOUCHSCREEN, False));
+}
+
+static gboolean
+device_type_is_present (InfoIdentifyFunc info_func,
+ DeviceIdentifyFunc device_func)
+{
+ XDeviceInfo *device_info;
+ gint n_devices;
+ guint i;
+ gboolean retval;
+
+ if (supports_xinput_devices () == FALSE)
+ return TRUE;
+
+ retval = FALSE;
+
+ device_info = XListInputDevices (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), &n_devices);
+ if (device_info == NULL)
+ return FALSE;
+
+ for (i = 0; i < n_devices; i++) {
+ XDevice *device;
+
+ /* Check with the device info first */
+ retval = (info_func) (&device_info[i]);
+ if (retval == FALSE)
+ continue;
+
+ /* If we only have an info func, we're done checking */
+ if (device_func == NULL)
+ break;
+
+ gdk_error_trap_push ();
+ device = XOpenDevice (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), device_info[i].id);
+ if (gdk_error_trap_pop () || (device == NULL))
+ continue;
+
+ retval = (device_func) (device);
+ if (retval) {
+ XCloseDevice (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), device);
+ break;
+ }
+
+ XCloseDevice (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), device);
+ }
+ XFreeDeviceList (device_info);
+
+ return retval;
+}
+
+gboolean
+touchscreen_is_present (void)
+{
+ return device_type_is_present (device_info_is_touchscreen,
+ NULL);
+}
+
+gboolean
+touchpad_is_present (void)
+{
+ return device_type_is_present (device_info_is_touchpad,
+ device_is_touchpad);
+}
+
+char *
+xdevice_get_device_node (int deviceid)
+{
+ Atom prop;
+ Atom act_type;
+ int act_format;
+ unsigned long nitems, bytes_after;
+ unsigned char *data;
+ char *ret;
+
+ gdk_display_sync (gdk_display_get_default ());
+
+ prop = XInternAtom (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), "Device Node", False);
+ if (!prop)
+ return NULL;
+
+ gdk_error_trap_push ();
+
+ if (!XIGetProperty (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()),
+ deviceid, prop, 0, 1000, False,
+ AnyPropertyType, &act_type, &act_format,
+ &nitems, &bytes_after, &data) == Success) {
+ gdk_error_trap_pop_ignored ();
+ return NULL;
+ }
+ if (gdk_error_trap_pop ())
+ goto out;
+
+ if (nitems == 0)
+ goto out;
+
+ if (act_type != XA_STRING)
+ goto out;
+
+ /* Unknown string format */
+ if (act_format != 8)
+ goto out;
+
+ ret = g_strdup ((char *) data);
+
+ XFree (data);
+ return ret;
+
+out:
+ XFree (data);
+ return NULL;
+}
+
+gboolean
+set_device_enabled (int device_id,
+ gboolean enabled)
+{
+ Atom prop;
+ guchar value;
+
+ prop = XInternAtom (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), "Device Enabled", False);
+ if (!prop)
+ return FALSE;
+
+ gdk_error_trap_push ();
+
+ value = enabled ? 1 : 0;
+ XIChangeProperty (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()),
+ device_id, prop, XA_INTEGER, 8, PropModeReplace, &value, 1);
+
+ if (gdk_error_trap_pop ())
+ return FALSE;
+
+ return TRUE;
+}
+
+static const char *
+custom_command_to_string (CustomCommand command)
+{
+ switch (command) {
+ case COMMAND_DEVICE_ADDED:
+ return "added";
+ case COMMAND_DEVICE_REMOVED:
+ return "removed";
+ case COMMAND_DEVICE_PRESENT:
+ return "present";
+ default:
+ g_assert_not_reached ();
+ }
+}
+
+/* Run a custom command on device presence events. Parameters passed into
+ * the custom command are:
+ * command -t [added|removed|present] -i <device ID> <device name>
+ * Type 'added' and 'removed' signal 'device added' and 'device removed',
+ * respectively. Type 'present' signals 'device present at
+ * gnome-settings-daemon init'.
+ *
+ * The script is expected to run synchronously, and an exit value
+ * of "1" means that no other settings will be applied to this
+ * particular device.
+ *
+ * More options may be added in the future.
+ *
+ * This function returns TRUE if we should not apply any more settings
+ * to the device.
+ */
+gboolean
+run_custom_command (GdkDevice *device,
+ CustomCommand command)
+{
+ GSettings *settings;
+ char *cmd;
+ char *argv[5];
+ int exit_status;
+ gboolean rc;
+ int id;
+
+ settings = g_settings_new (INPUT_DEVICES_SCHEMA);
+ cmd = g_settings_get_string (settings, KEY_HOTPLUG_COMMAND);
+ g_object_unref (settings);
+
+ if (!cmd || cmd[0] == '\0') {
+ g_free (cmd);
+ return FALSE;
+ }
+
+ /* Easter egg! */
+ g_object_get (device, "device-id", &id, NULL);
+
+ argv[0] = cmd;
+ argv[1] = g_strdup_printf ("-t %s", custom_command_to_string (command));
+ argv[2] = g_strdup_printf ("-i %d", id);
+ argv[3] = g_strdup_printf ("%s", gdk_device_get_name (device));
+ argv[4] = NULL;
+
+ rc = g_spawn_sync (g_get_home_dir (), argv, NULL, G_SPAWN_SEARCH_PATH,
+ NULL, NULL, NULL, NULL, &exit_status, NULL);
+
+ if (rc == FALSE)
+ g_warning ("Couldn't execute command '%s', verify that this is a valid command.", cmd);
+
+ g_free (argv[0]);
+ g_free (argv[1]);
+ g_free (argv[2]);
+
+ return (exit_status == 0);
+}
+
+GList *
+get_disabled_devices (GdkDeviceManager *manager)
+{
+ XDeviceInfo *device_info;
+ gint n_devices;
+ guint i;
+ GList *ret;
+
+ ret = NULL;
+
+ device_info = XListInputDevices (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), &n_devices);
+ if (device_info == NULL)
+ return ret;
+
+ for (i = 0; i < n_devices; i++) {
+ GdkDevice *device;
+
+ /* Ignore core devices */
+ if (device_info[i].use == IsXKeyboard ||
+ device_info[i].use == IsXPointer)
+ continue;
+
+ /* Check whether the device is actually available */
+ device = gdk_x11_device_manager_lookup (manager, device_info[i].id);
+ if (device != NULL)
+ continue;
+
+ ret = g_list_prepend (ret, GINT_TO_POINTER (device_info[i].id));
+ }
+
+ XFreeDeviceList (device_info);
+
+ return ret;
+}
diff --git a/panels/wacom/gsd-input-helper.h b/panels/wacom/gsd-input-helper.h
new file mode 100644
index 0000000..0bc205b
--- /dev/null
+++ b/panels/wacom/gsd-input-helper.h
@@ -0,0 +1,77 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2010 Bastien Nocera <hadess hadess net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __GSD_INPUT_HELPER_H
+#define __GSD_INPUT_HELPER_H
+
+G_BEGIN_DECLS
+
+#include <glib.h>
+
+#include <X11/extensions/XInput.h>
+#include <X11/extensions/XIproto.h>
+
+typedef enum {
+ COMMAND_DEVICE_ADDED,
+ COMMAND_DEVICE_REMOVED,
+ COMMAND_DEVICE_PRESENT
+} CustomCommand;
+
+/* Generic property setting code. Fill up the struct property with the property
+ * data and pass it into device_set_property together with the device to be
+ * changed. Note: doesn't cater for non-zero offsets yet, but we don't have
+ * any settings that require that.
+ */
+typedef struct {
+ const char *name; /* property name */
+ gint nitems; /* number of items in data */
+ gint format; /* CARD8 or CARD32 sized-items */
+ union {
+ const gchar *c; /* 8 bit data */
+ const gint *i; /* 32 bit data */
+ } data;
+} PropertyHelper;
+
+gboolean supports_xinput_devices (void);
+gboolean supports_xinput2_devices (int *opcode);
+
+gboolean set_device_enabled (int device_id,
+ gboolean enabled);
+
+gboolean device_is_touchpad (XDevice *xdevice);
+
+gboolean device_info_is_touchpad (XDeviceInfo *device_info);
+gboolean device_info_is_touchscreen (XDeviceInfo *device_info);
+
+gboolean touchpad_is_present (void);
+gboolean touchscreen_is_present (void);
+
+gboolean device_set_property (XDevice *xdevice,
+ const char *device_name,
+ PropertyHelper *property);
+
+gboolean run_custom_command (GdkDevice *device,
+ CustomCommand command);
+
+GList * get_disabled_devices (GdkDeviceManager *manager);
+char * xdevice_get_device_node (int deviceid);
+
+G_END_DECLS
+
+#endif /* __GSD_INPUT_HELPER_H */
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