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mutter/clutter/clutter/clutter-input-device.c
Carlos Garnacho c28ab9a5c1 clutter: Add clutter_input_device_get_dimensions() 
This will be used to know the size of touchscreens and tablets
by poking the backends about it. This is intended to replace code
using udev nowadays.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2617>
2022-11-09 10:46:55 +00:00

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/*
* Clutter.
*
* An OpenGL based 'interactive canvas' library.
*
* Copyright © 2009, 2010, 2011 Intel Corp.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
* Author: Emmanuele Bassi <ebassi@linux.intel.com>
*/
/**
* ClutterInputDevice:
*
* An input device managed by Clutter
*
* #ClutterInputDevice represents an input device known to Clutter.
*
* The #ClutterInputDevice class holds the state of the device, but
* its contents are usually defined by the Clutter backend in use.
*/
#include "clutter-build-config.h"
#include "clutter-input-device.h"
#include "clutter-actor-private.h"
#include "clutter-debug.h"
#include "clutter-enum-types.h"
#include "clutter-event-private.h"
#include "clutter-marshal.h"
#include "clutter-private.h"
#include "clutter-stage-private.h"
#include "clutter-input-device-private.h"
#include "clutter-input-device-tool.h"
#include <math.h>
enum
{
PROP_0,
PROP_BACKEND,
PROP_NAME,
PROP_DEVICE_TYPE,
PROP_CAPABILITIES,
PROP_SEAT,
PROP_DEVICE_MODE,
PROP_HAS_CURSOR,
PROP_VENDOR_ID,
PROP_PRODUCT_ID,
PROP_N_STRIPS,
PROP_N_RINGS,
PROP_N_MODE_GROUPS,
PROP_N_BUTTONS,
PROP_DEVICE_NODE,
PROP_LAST
};
static GParamSpec *obj_props[PROP_LAST] = { NULL, };
typedef struct _ClutterInputDevicePrivate ClutterInputDevicePrivate;
struct _ClutterInputDevicePrivate
{
ClutterInputDeviceType device_type;
ClutterInputCapabilities capabilities;
ClutterInputMode device_mode;
char *device_name;
ClutterSeat *seat;
ClutterBackend *backend;
char *vendor_id;
char *product_id;
char *node_path;
int n_rings;
int n_strips;
int n_mode_groups;
int n_buttons;
gboolean has_cursor;
};
G_DEFINE_TYPE_WITH_PRIVATE (ClutterInputDevice, clutter_input_device, G_TYPE_OBJECT);
static void
clutter_input_device_constructed (GObject *gobject)
{
ClutterInputDevice *device = CLUTTER_INPUT_DEVICE (gobject);
ClutterInputDevicePrivate *priv =
clutter_input_device_get_instance_private (device);
if (priv->capabilities == 0)
{
ClutterInputCapabilities capabilities = 0;
switch (priv->device_type)
{
case CLUTTER_POINTER_DEVICE:
capabilities = CLUTTER_INPUT_CAPABILITY_POINTER;
break;
case CLUTTER_KEYBOARD_DEVICE:
capabilities = CLUTTER_INPUT_CAPABILITY_KEYBOARD;
break;
case CLUTTER_TOUCHPAD_DEVICE:
capabilities = CLUTTER_INPUT_CAPABILITY_POINTER |
CLUTTER_INPUT_CAPABILITY_TOUCHPAD;
break;
case CLUTTER_TOUCHSCREEN_DEVICE:
capabilities = CLUTTER_INPUT_CAPABILITY_TOUCH;
break;
case CLUTTER_TABLET_DEVICE:
case CLUTTER_PEN_DEVICE:
case CLUTTER_ERASER_DEVICE:
case CLUTTER_CURSOR_DEVICE:
capabilities = CLUTTER_INPUT_CAPABILITY_TABLET_TOOL;
break;
case CLUTTER_PAD_DEVICE:
capabilities = CLUTTER_INPUT_CAPABILITY_TABLET_PAD;
break;
case CLUTTER_EXTENSION_DEVICE:
case CLUTTER_JOYSTICK_DEVICE:
break;
case CLUTTER_N_DEVICE_TYPES:
g_assert_not_reached ();
break;
}
priv->capabilities = capabilities;
}
}
static void
clutter_input_device_dispose (GObject *gobject)
{
ClutterInputDevice *device = CLUTTER_INPUT_DEVICE (gobject);
ClutterInputDevicePrivate *priv =
clutter_input_device_get_instance_private (device);
g_clear_pointer (&priv->device_name, g_free);
g_clear_pointer (&priv->vendor_id, g_free);
g_clear_pointer (&priv->product_id, g_free);
g_clear_pointer (&priv->node_path, g_free);
if (device->accessibility_virtual_device)
g_clear_object (&device->accessibility_virtual_device);
G_OBJECT_CLASS (clutter_input_device_parent_class)->dispose (gobject);
}
static void
clutter_input_device_set_property (GObject *gobject,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
ClutterInputDevice *self = CLUTTER_INPUT_DEVICE (gobject);
ClutterInputDevicePrivate *priv =
clutter_input_device_get_instance_private (self);
switch (prop_id)
{
case PROP_DEVICE_TYPE:
priv->device_type = g_value_get_enum (value);
break;
case PROP_CAPABILITIES:
priv->capabilities = g_value_get_flags (value);
break;
case PROP_SEAT:
priv->seat = g_value_get_object (value);
break;
case PROP_DEVICE_MODE:
priv->device_mode = g_value_get_enum (value);
break;
case PROP_BACKEND:
priv->backend = g_value_get_object (value);
break;
case PROP_NAME:
priv->device_name = g_value_dup_string (value);
break;
case PROP_HAS_CURSOR:
priv->has_cursor = g_value_get_boolean (value);
break;
case PROP_VENDOR_ID:
priv->vendor_id = g_value_dup_string (value);
break;
case PROP_PRODUCT_ID:
priv->product_id = g_value_dup_string (value);
break;
case PROP_N_RINGS:
priv->n_rings = g_value_get_int (value);
break;
case PROP_N_STRIPS:
priv->n_strips = g_value_get_int (value);
break;
case PROP_N_MODE_GROUPS:
priv->n_mode_groups = g_value_get_int (value);
break;
case PROP_N_BUTTONS:
priv->n_buttons = g_value_get_int (value);
break;
case PROP_DEVICE_NODE:
priv->node_path = g_value_dup_string (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
break;
}
}
static void
clutter_input_device_get_property (GObject *gobject,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
ClutterInputDevice *self = CLUTTER_INPUT_DEVICE (gobject);
ClutterInputDevicePrivate *priv =
clutter_input_device_get_instance_private (self);
switch (prop_id)
{
case PROP_DEVICE_TYPE:
g_value_set_enum (value, priv->device_type);
break;
case PROP_CAPABILITIES:
g_value_set_flags (value, priv->capabilities);
break;
case PROP_SEAT:
g_value_set_object (value, priv->seat);
break;
case PROP_DEVICE_MODE:
g_value_set_enum (value, priv->device_mode);
break;
case PROP_BACKEND:
g_value_set_object (value, priv->backend);
break;
case PROP_NAME:
g_value_set_string (value, priv->device_name);
break;
case PROP_HAS_CURSOR:
g_value_set_boolean (value, priv->has_cursor);
break;
case PROP_VENDOR_ID:
g_value_set_string (value, priv->vendor_id);
break;
case PROP_PRODUCT_ID:
g_value_set_string (value, priv->product_id);
break;
case PROP_N_RINGS:
g_value_set_int (value, priv->n_rings);
break;
case PROP_N_STRIPS:
g_value_set_int (value, priv->n_strips);
break;
case PROP_N_MODE_GROUPS:
g_value_set_int (value, priv->n_mode_groups);
break;
case PROP_N_BUTTONS:
g_value_set_int (value, priv->n_buttons);
break;
case PROP_DEVICE_NODE:
g_value_set_string (value, priv->node_path);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
break;
}
}
static void
clutter_input_device_class_init (ClutterInputDeviceClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
/**
* ClutterInputDevice:name:
*
* The name of the device
*/
obj_props[PROP_NAME] =
g_param_spec_string ("name",
P_("Name"),
P_("The name of the device"),
NULL,
CLUTTER_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY);
/**
* ClutterInputDevice:device-type:
*
* The type of the device
*/
obj_props[PROP_DEVICE_TYPE] =
g_param_spec_enum ("device-type",
P_("Device Type"),
P_("The type of the device"),
CLUTTER_TYPE_INPUT_DEVICE_TYPE,
CLUTTER_POINTER_DEVICE,
CLUTTER_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY);
/**
* ClutterInputDevice:capabilities:
*
* The capabilities of the device
*/
obj_props[PROP_CAPABILITIES] =
g_param_spec_flags ("capabilities",
P_("Capabilities"),
P_("The capabilities of the device"),
CLUTTER_TYPE_INPUT_CAPABILITIES, 0,
CLUTTER_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY);
/**
* ClutterInputDevice:seat:
*
* The #ClutterSeat instance which owns the device
*/
obj_props[PROP_SEAT] =
g_param_spec_object ("seat",
P_("Seat"),
P_("Seat"),
CLUTTER_TYPE_SEAT,
CLUTTER_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY);
/**
* ClutterInputDevice:mode:
*
* The mode of the device.
*/
obj_props[PROP_DEVICE_MODE] =
g_param_spec_enum ("device-mode",
P_("Device Mode"),
P_("The mode of the device"),
CLUTTER_TYPE_INPUT_MODE,
CLUTTER_INPUT_MODE_FLOATING,
CLUTTER_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY);
/**
* ClutterInputDevice:has-cursor:
*
* Whether the device has an on screen cursor following its movement.
*/
obj_props[PROP_HAS_CURSOR] =
g_param_spec_boolean ("has-cursor",
P_("Has Cursor"),
P_("Whether the device has a cursor"),
FALSE,
CLUTTER_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY);
/**
* ClutterInputDevice:backend:
*
* The #ClutterBackend that created the device.
*/
obj_props[PROP_BACKEND] =
g_param_spec_object ("backend",
P_("Backend"),
P_("The backend instance"),
CLUTTER_TYPE_BACKEND,
CLUTTER_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY);
/**
* ClutterInputDevice:vendor-id:
*
* Vendor ID of this device.2
*/
obj_props[PROP_VENDOR_ID] =
g_param_spec_string ("vendor-id",
P_("Vendor ID"),
P_("Vendor ID"),
NULL,
CLUTTER_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY);
/**
* ClutterInputDevice:product-id:
*
* Product ID of this device.2
*/
obj_props[PROP_PRODUCT_ID] =
g_param_spec_string ("product-id",
P_("Product ID"),
P_("Product ID"),
NULL,
CLUTTER_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY);
obj_props[PROP_N_RINGS] =
g_param_spec_int ("n-rings",
P_("Number of rings"),
P_("Number of rings (circular sliders) in this device"),
0, G_MAXINT, 0,
CLUTTER_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY);
obj_props[PROP_N_STRIPS] =
g_param_spec_int ("n-strips",
P_("Number of strips"),
P_("Number of strips (linear sliders) in this device"),
0, G_MAXINT, 0,
CLUTTER_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY);
obj_props[PROP_N_MODE_GROUPS] =
g_param_spec_int ("n-mode-groups",
P_("Number of mode groups"),
P_("Number of mode groups"),
0, G_MAXINT, 0,
CLUTTER_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY);
obj_props[PROP_N_BUTTONS] =
g_param_spec_int ("n-buttons",
P_("Number of buttons"),
P_("Number of buttons"),
0, G_MAXINT, 0,
CLUTTER_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY);
obj_props[PROP_DEVICE_NODE] =
g_param_spec_string ("device-node",
P_("Device node path"),
P_("Device node path"),
NULL,
CLUTTER_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY);
gobject_class->constructed = clutter_input_device_constructed;
gobject_class->dispose = clutter_input_device_dispose;
gobject_class->set_property = clutter_input_device_set_property;
gobject_class->get_property = clutter_input_device_get_property;
g_object_class_install_properties (gobject_class, PROP_LAST, obj_props);
}
static void
clutter_input_device_init (ClutterInputDevice *self)
{
ClutterInputDevicePrivate *priv =
clutter_input_device_get_instance_private (self);
priv->device_type = CLUTTER_POINTER_DEVICE;
}
/**
* clutter_input_device_get_device_type:
* @device: a #ClutterInputDevice
*
* Retrieves the type of @device
*
* Return value: the type of the device
*/
ClutterInputDeviceType
clutter_input_device_get_device_type (ClutterInputDevice *device)
{
ClutterInputDevicePrivate *priv =
clutter_input_device_get_instance_private (device);
g_return_val_if_fail (CLUTTER_IS_INPUT_DEVICE (device),
CLUTTER_POINTER_DEVICE);
return priv->device_type;
}
/**
* clutter_input_device_get_capabilities:
* @device: a #ClutterInputDevice
*
* Retrieves the capabilities of @device
*
* Return value: the capabilities of the device
*/
ClutterInputCapabilities
clutter_input_device_get_capabilities (ClutterInputDevice *device)
{
ClutterInputDevicePrivate *priv =
clutter_input_device_get_instance_private (device);
g_return_val_if_fail (CLUTTER_IS_INPUT_DEVICE (device), 0);
return priv->capabilities;
}
/**
* clutter_input_device_get_device_name:
* @device: a #ClutterInputDevice
*
* Retrieves the name of the @device
*
* Return value: the name of the device, or %NULL. The returned string
* is owned by the #ClutterInputDevice and should never be modified
* or freed
*/
const gchar *
clutter_input_device_get_device_name (ClutterInputDevice *device)
{
ClutterInputDevicePrivate *priv =
clutter_input_device_get_instance_private (device);
g_return_val_if_fail (CLUTTER_IS_INPUT_DEVICE (device), NULL);
return priv->device_name;
}
/**
* clutter_input_device_get_has_cursor:
* @device: a #ClutterInputDevice
*
* Retrieves whether @device has a pointer that follows the
* device motion.
*
* Return value: %TRUE if the device has a cursor
*/
gboolean
clutter_input_device_get_has_cursor (ClutterInputDevice *device)
{
ClutterInputDevicePrivate *priv =
clutter_input_device_get_instance_private (device);
g_return_val_if_fail (CLUTTER_IS_INPUT_DEVICE (device), FALSE);
return priv->has_cursor;
}
/**
* clutter_input_device_get_device_mode:
* @device: a #ClutterInputDevice
*
* Retrieves the #ClutterInputMode of @device.
*
* Return value: the device mode
*/
ClutterInputMode
clutter_input_device_get_device_mode (ClutterInputDevice *device)
{
ClutterInputDevicePrivate *priv =
clutter_input_device_get_instance_private (device);
g_return_val_if_fail (CLUTTER_IS_INPUT_DEVICE (device),
CLUTTER_INPUT_MODE_FLOATING);
return priv->device_mode;
}
/**
* clutter_input_device_get_vendor_id:
* @device: a physical #ClutterInputDevice
*
* Gets the vendor ID of this device.
*
* Returns: the vendor ID2
*/
const gchar *
clutter_input_device_get_vendor_id (ClutterInputDevice *device)
{
ClutterInputDevicePrivate *priv =
clutter_input_device_get_instance_private (device);
g_return_val_if_fail (CLUTTER_IS_INPUT_DEVICE (device), NULL);
g_return_val_if_fail (clutter_input_device_get_device_mode (device) != CLUTTER_INPUT_MODE_LOGICAL, NULL);
return priv->vendor_id;
}
/**
* clutter_input_device_get_product_id:
* @device: a physical #ClutterInputDevice
*
* Gets the product ID of this device.
*
* Returns: the product ID2
*/
const gchar *
clutter_input_device_get_product_id (ClutterInputDevice *device)
{
ClutterInputDevicePrivate *priv =
clutter_input_device_get_instance_private (device);
g_return_val_if_fail (CLUTTER_IS_INPUT_DEVICE (device), NULL);
g_return_val_if_fail (clutter_input_device_get_device_mode (device) != CLUTTER_INPUT_MODE_LOGICAL, NULL);
return priv->product_id;
}
gint
clutter_input_device_get_n_rings (ClutterInputDevice *device)
{
ClutterInputDevicePrivate *priv =
clutter_input_device_get_instance_private (device);
g_return_val_if_fail (CLUTTER_IS_INPUT_DEVICE (device), 0);
return priv->n_rings;
}
gint
clutter_input_device_get_n_strips (ClutterInputDevice *device)
{
ClutterInputDevicePrivate *priv =
clutter_input_device_get_instance_private (device);
g_return_val_if_fail (CLUTTER_IS_INPUT_DEVICE (device), 0);
return priv->n_strips;
}
gint
clutter_input_device_get_n_mode_groups (ClutterInputDevice *device)
{
ClutterInputDevicePrivate *priv =
clutter_input_device_get_instance_private (device);
g_return_val_if_fail (CLUTTER_IS_INPUT_DEVICE (device), 0);
g_return_val_if_fail (clutter_input_device_get_device_type (device) ==
CLUTTER_PAD_DEVICE, 0);
return priv->n_mode_groups;
}
gint
clutter_input_device_get_n_buttons (ClutterInputDevice *device)
{
ClutterInputDevicePrivate *priv =
clutter_input_device_get_instance_private (device);
g_return_val_if_fail (CLUTTER_IS_INPUT_DEVICE (device), 0);
g_return_val_if_fail (clutter_input_device_get_device_type (device) ==
CLUTTER_PAD_DEVICE, 0);
return priv->n_buttons;
}
gint
clutter_input_device_get_group_n_modes (ClutterInputDevice *device,
gint group)
{
ClutterInputDeviceClass *device_class;
g_return_val_if_fail (CLUTTER_IS_INPUT_DEVICE (device), 0);
g_return_val_if_fail (clutter_input_device_get_device_type (device) ==
CLUTTER_PAD_DEVICE, 0);
g_return_val_if_fail (group >= 0, 0);
device_class = CLUTTER_INPUT_DEVICE_GET_CLASS (device);
if (device_class->get_group_n_modes)
return device_class->get_group_n_modes (device, group);
return 0;
}
gboolean
clutter_input_device_is_mode_switch_button (ClutterInputDevice *device,
guint group,
guint button)
{
ClutterInputDeviceClass *device_class;
g_return_val_if_fail (CLUTTER_IS_INPUT_DEVICE (device), FALSE);
g_return_val_if_fail (clutter_input_device_get_device_type (device) ==
CLUTTER_PAD_DEVICE, FALSE);
device_class = CLUTTER_INPUT_DEVICE_GET_CLASS (device);
if (device_class->is_mode_switch_button)
return device_class->is_mode_switch_button (device, group, button);
return FALSE;
}
gint
clutter_input_device_get_mode_switch_button_group (ClutterInputDevice *device,
guint button)
{
ClutterInputDevicePrivate *priv =
clutter_input_device_get_instance_private (device);
gint group;
g_return_val_if_fail (CLUTTER_IS_INPUT_DEVICE (device), -1);
g_return_val_if_fail (clutter_input_device_get_device_type (device) ==
CLUTTER_PAD_DEVICE, -1);
for (group = 0; group < priv->n_mode_groups; group++)
{
if (clutter_input_device_is_mode_switch_button (device, group, button))
return group;
}
return -1;
}
int
clutter_input_device_get_pad_feature_group (ClutterInputDevice *device,
ClutterInputDevicePadFeature feature,
int n_feature)
{
ClutterInputDeviceClass *device_class;
device_class = CLUTTER_INPUT_DEVICE_GET_CLASS (device);
if (!device_class->get_pad_feature_group)
return 0;
return CLUTTER_INPUT_DEVICE_GET_CLASS (device)->get_pad_feature_group (device,
feature,
n_feature);
}
const gchar *
clutter_input_device_get_device_node (ClutterInputDevice *device)
{
ClutterInputDevicePrivate *priv =
clutter_input_device_get_instance_private (device);
g_return_val_if_fail (CLUTTER_IS_INPUT_DEVICE (device), NULL);
return priv->node_path;
}
gboolean
clutter_input_device_is_grouped (ClutterInputDevice *device,
ClutterInputDevice *other_device)
{
g_return_val_if_fail (CLUTTER_IS_INPUT_DEVICE (device), FALSE);
g_return_val_if_fail (CLUTTER_IS_INPUT_DEVICE (other_device), FALSE);
return CLUTTER_INPUT_DEVICE_GET_CLASS (device)->is_grouped (device, other_device);
}
/**
* clutter_input_device_get_seat:
* @device: a #ClutterInputDevice
*
* Returns the seat the device belongs to
*
* Returns: (transfer none): the device seat
**/
ClutterSeat *
clutter_input_device_get_seat (ClutterInputDevice *device)
{
ClutterInputDevicePrivate *priv =
clutter_input_device_get_instance_private (device);
g_return_val_if_fail (CLUTTER_IS_INPUT_DEVICE (device), NULL);
return priv->seat;
}
/**
* clutter_input_device_get_dimensions:
* @device: a #ClutterInputDevice
* @width: (out): Return location for device width (in millimeters)
* @height: (out): Return location for device height (in millimeters)
*
* Returns: %TRUE if the device reports the physical size of its input area.
**/
gboolean
clutter_input_device_get_dimensions (ClutterInputDevice *device,
unsigned int *width,
unsigned int *height)
{
g_return_val_if_fail (CLUTTER_IS_INPUT_DEVICE (device), FALSE);
g_return_val_if_fail (width != NULL && height != NULL, FALSE);
if (!CLUTTER_INPUT_DEVICE_GET_CLASS (device)->get_dimensions)
return FALSE;
return CLUTTER_INPUT_DEVICE_GET_CLASS (device)->get_dimensions (device, width, height);
}
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