mutter/src/backends/native/meta-virtual-input-device-native.c

702 lines
25 KiB
C

/*
* Copyright (C) 2016 Red Hat Inc.
*
* 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: Jonas Ådahl <jadahl@gmail.com>
*/
#include "config.h"
#include <glib-object.h>
#include <linux/input.h>
#include "backends/native/meta-input-device-native.h"
#include "backends/native/meta-keymap-native.h"
#include "backends/native/meta-seat-native.h"
#include "backends/native/meta-virtual-input-device-native.h"
#include "clutter/clutter-mutter.h"
enum
{
PROP_0,
PROP_SEAT,
PROP_LAST
};
static GParamSpec *obj_props[PROP_LAST];
struct _MetaVirtualInputDeviceNative
{
ClutterVirtualInputDevice parent;
ClutterInputDevice *device;
MetaSeatNative *seat;
int button_count[KEY_CNT];
};
G_DEFINE_TYPE (MetaVirtualInputDeviceNative,
meta_virtual_input_device_native,
CLUTTER_TYPE_VIRTUAL_INPUT_DEVICE)
typedef enum _EvdevButtonType
{
EVDEV_BUTTON_TYPE_NONE,
EVDEV_BUTTON_TYPE_KEY,
EVDEV_BUTTON_TYPE_BUTTON,
} EvdevButtonType;
static int
update_button_count (MetaVirtualInputDeviceNative *virtual_evdev,
uint32_t button,
uint32_t state)
{
if (state)
return ++virtual_evdev->button_count[button];
else
return --virtual_evdev->button_count[button];
}
static EvdevButtonType
get_button_type (uint16_t code)
{
switch (code)
{
case BTN_TOOL_PEN:
case BTN_TOOL_RUBBER:
case BTN_TOOL_BRUSH:
case BTN_TOOL_PENCIL:
case BTN_TOOL_AIRBRUSH:
case BTN_TOOL_MOUSE:
case BTN_TOOL_LENS:
case BTN_TOOL_QUINTTAP:
case BTN_TOOL_DOUBLETAP:
case BTN_TOOL_TRIPLETAP:
case BTN_TOOL_QUADTAP:
case BTN_TOOL_FINGER:
case BTN_TOUCH:
return EVDEV_BUTTON_TYPE_NONE;
}
if (code >= KEY_ESC && code <= KEY_MICMUTE)
return EVDEV_BUTTON_TYPE_KEY;
if (code >= BTN_MISC && code <= BTN_GEAR_UP)
return EVDEV_BUTTON_TYPE_BUTTON;
if (code >= KEY_OK && code <= KEY_LIGHTS_TOGGLE)
return EVDEV_BUTTON_TYPE_KEY;
if (code >= BTN_DPAD_UP && code <= BTN_DPAD_RIGHT)
return EVDEV_BUTTON_TYPE_BUTTON;
if (code >= KEY_ALS_TOGGLE && code <= KEY_KBDINPUTASSIST_CANCEL)
return EVDEV_BUTTON_TYPE_KEY;
if (code >= BTN_TRIGGER_HAPPY && code <= BTN_TRIGGER_HAPPY40)
return EVDEV_BUTTON_TYPE_BUTTON;
return EVDEV_BUTTON_TYPE_NONE;
}
static void
release_pressed_buttons (ClutterVirtualInputDevice *virtual_device)
{
MetaVirtualInputDeviceNative *virtual_evdev =
META_VIRTUAL_INPUT_DEVICE_NATIVE (virtual_device);
int code;
uint64_t time_us;
time_us = g_get_monotonic_time ();
for (code = 0; code < G_N_ELEMENTS (virtual_evdev->button_count); code++)
{
if (virtual_evdev->button_count[code] == 0)
continue;
switch (get_button_type (code))
{
case EVDEV_BUTTON_TYPE_KEY:
clutter_virtual_input_device_notify_key (virtual_device,
time_us,
code,
CLUTTER_KEY_STATE_RELEASED);
break;
case EVDEV_BUTTON_TYPE_BUTTON:
clutter_virtual_input_device_notify_button (virtual_device,
time_us,
code,
CLUTTER_BUTTON_STATE_RELEASED);
break;
case EVDEV_BUTTON_TYPE_NONE:
g_assert_not_reached ();
}
}
}
static void
meta_virtual_input_device_native_notify_relative_motion (ClutterVirtualInputDevice *virtual_device,
uint64_t time_us,
double dx,
double dy)
{
MetaVirtualInputDeviceNative *virtual_evdev =
META_VIRTUAL_INPUT_DEVICE_NATIVE (virtual_device);
if (time_us == CLUTTER_CURRENT_TIME)
time_us = g_get_monotonic_time ();
meta_seat_native_notify_relative_motion (virtual_evdev->seat,
virtual_evdev->device,
time_us,
dx, dy,
dx, dy);
}
static void
meta_virtual_input_device_native_notify_absolute_motion (ClutterVirtualInputDevice *virtual_device,
uint64_t time_us,
double x,
double y)
{
MetaVirtualInputDeviceNative *virtual_evdev =
META_VIRTUAL_INPUT_DEVICE_NATIVE (virtual_device);
if (time_us == CLUTTER_CURRENT_TIME)
time_us = g_get_monotonic_time ();
meta_seat_native_notify_absolute_motion (virtual_evdev->seat,
virtual_evdev->device,
time_us,
x, y,
NULL);
}
static int
translate_to_evdev_button (int clutter_button)
{
switch (clutter_button)
{
case CLUTTER_BUTTON_PRIMARY:
return BTN_LEFT;
case CLUTTER_BUTTON_SECONDARY:
return BTN_RIGHT;
case CLUTTER_BUTTON_MIDDLE:
return BTN_MIDDLE;
default:
/*
* For compatibility reasons, all additional buttons go after the old
* 4-7 scroll ones.
*/
return clutter_button + (BTN_LEFT - 1) - 4;
}
}
static void
meta_virtual_input_device_native_notify_button (ClutterVirtualInputDevice *virtual_device,
uint64_t time_us,
uint32_t button,
ClutterButtonState button_state)
{
MetaVirtualInputDeviceNative *virtual_evdev =
META_VIRTUAL_INPUT_DEVICE_NATIVE (virtual_device);
int button_count;
int evdev_button;
if (time_us == CLUTTER_CURRENT_TIME)
time_us = g_get_monotonic_time ();
evdev_button = translate_to_evdev_button (button);
if (get_button_type (evdev_button) != EVDEV_BUTTON_TYPE_BUTTON)
{
g_warning ("Unknown/invalid virtual device button 0x%x pressed",
evdev_button);
return;
}
button_count = update_button_count (virtual_evdev, evdev_button, button_state);
if (button_count < 0 || button_count > 1)
{
g_warning ("Received multiple virtual 0x%x button %s (ignoring)", evdev_button,
button_state == CLUTTER_BUTTON_STATE_PRESSED ? "presses" : "releases");
update_button_count (virtual_evdev, evdev_button, 1 - button_state);
return;
}
meta_seat_native_notify_button (virtual_evdev->seat,
virtual_evdev->device,
time_us,
evdev_button,
button_state);
}
static void
meta_virtual_input_device_native_notify_key (ClutterVirtualInputDevice *virtual_device,
uint64_t time_us,
uint32_t key,
ClutterKeyState key_state)
{
MetaVirtualInputDeviceNative *virtual_evdev =
META_VIRTUAL_INPUT_DEVICE_NATIVE (virtual_device);
int key_count;
if (time_us == CLUTTER_CURRENT_TIME)
time_us = g_get_monotonic_time ();
if (get_button_type (key) != EVDEV_BUTTON_TYPE_KEY)
{
g_warning ("Unknown/invalid virtual device key 0x%x pressed\n", key);
return;
}
key_count = update_button_count (virtual_evdev, key, key_state);
if (key_count < 0 || key_count > 1)
{
g_warning ("Received multiple virtual 0x%x key %s (ignoring)", key,
key_state == CLUTTER_KEY_STATE_PRESSED ? "presses" : "releases");
update_button_count (virtual_evdev, key, 1 - key_state);
return;
}
meta_seat_native_notify_key (virtual_evdev->seat,
virtual_evdev->device,
time_us,
key,
key_state,
TRUE);
}
static gboolean
pick_keycode_for_keyval_in_current_group (ClutterVirtualInputDevice *virtual_device,
guint keyval,
guint *keycode_out,
guint *level_out)
{
MetaVirtualInputDeviceNative *virtual_evdev =
META_VIRTUAL_INPUT_DEVICE_NATIVE (virtual_device);
ClutterKeymap *keymap;
struct xkb_keymap *xkb_keymap;
struct xkb_state *state;
guint keycode, layout;
xkb_keycode_t min_keycode, max_keycode;
keymap = clutter_backend_get_keymap (clutter_get_default_backend ());
xkb_keymap = meta_keymap_native_get_keyboard_map (META_KEYMAP_NATIVE (keymap));
state = virtual_evdev->seat->xkb;
layout = xkb_state_serialize_layout (state, XKB_STATE_LAYOUT_EFFECTIVE);
min_keycode = xkb_keymap_min_keycode (xkb_keymap);
max_keycode = xkb_keymap_max_keycode (xkb_keymap);
for (keycode = min_keycode; keycode < max_keycode; keycode++)
{
gint num_levels, level;
num_levels = xkb_keymap_num_levels_for_key (xkb_keymap, keycode, layout);
for (level = 0; level < num_levels; level++)
{
const xkb_keysym_t *syms;
gint num_syms, sym;
num_syms = xkb_keymap_key_get_syms_by_level (xkb_keymap, keycode, layout, level, &syms);
for (sym = 0; sym < num_syms; sym++)
{
if (syms[sym] == keyval)
{
*keycode_out = keycode;
if (level_out)
*level_out = level;
return TRUE;
}
}
}
}
return FALSE;
}
static void
apply_level_modifiers (ClutterVirtualInputDevice *virtual_device,
uint64_t time_us,
uint32_t level,
uint32_t key_state)
{
MetaVirtualInputDeviceNative *virtual_evdev =
META_VIRTUAL_INPUT_DEVICE_NATIVE (virtual_device);
guint keysym, keycode, evcode;
if (level == 0)
return;
if (level == 1)
{
keysym = XKB_KEY_Shift_L;
}
else if (level == 2)
{
keysym = XKB_KEY_ISO_Level3_Shift;
}
else
{
g_warning ("Unhandled level: %d\n", level);
return;
}
if (!pick_keycode_for_keyval_in_current_group (virtual_device, keysym,
&keycode, NULL))
return;
clutter_input_device_keycode_to_evdev (virtual_evdev->device,
keycode, &evcode);
meta_seat_native_notify_key (virtual_evdev->seat,
virtual_evdev->device,
time_us,
evcode,
key_state,
TRUE);
}
static void
meta_virtual_input_device_native_notify_keyval (ClutterVirtualInputDevice *virtual_device,
uint64_t time_us,
uint32_t keyval,
ClutterKeyState key_state)
{
MetaVirtualInputDeviceNative *virtual_evdev =
META_VIRTUAL_INPUT_DEVICE_NATIVE (virtual_device);
int key_count;
guint keycode = 0, level = 0, evcode = 0;
if (time_us == CLUTTER_CURRENT_TIME)
time_us = g_get_monotonic_time ();
if (!pick_keycode_for_keyval_in_current_group (virtual_device,
keyval, &keycode, &level))
{
g_warning ("No keycode found for keyval %x in current group", keyval);
return;
}
clutter_input_device_keycode_to_evdev (virtual_evdev->device,
keycode, &evcode);
if (get_button_type (evcode) != EVDEV_BUTTON_TYPE_KEY)
{
g_warning ("Unknown/invalid virtual device key 0x%x pressed\n", evcode);
return;
}
key_count = update_button_count (virtual_evdev, evcode, key_state);
if (key_count < 0 || key_count > 1)
{
g_warning ("Received multiple virtual 0x%x key %s (ignoring)", keycode,
key_state == CLUTTER_KEY_STATE_PRESSED ? "presses" : "releases");
update_button_count (virtual_evdev, evcode, 1 - key_state);
return;
}
if (key_state)
apply_level_modifiers (virtual_device, time_us, level, key_state);
meta_seat_native_notify_key (virtual_evdev->seat,
virtual_evdev->device,
time_us,
evcode,
key_state,
TRUE);
if (!key_state)
apply_level_modifiers (virtual_device, time_us, level, key_state);
}
static void
direction_to_discrete (ClutterScrollDirection direction,
double *discrete_dx,
double *discrete_dy)
{
switch (direction)
{
case CLUTTER_SCROLL_UP:
*discrete_dx = 0.0;
*discrete_dy = -1.0;
break;
case CLUTTER_SCROLL_DOWN:
*discrete_dx = 0.0;
*discrete_dy = 1.0;
break;
case CLUTTER_SCROLL_LEFT:
*discrete_dx = -1.0;
*discrete_dy = 0.0;
break;
case CLUTTER_SCROLL_RIGHT:
*discrete_dx = 1.0;
*discrete_dy = 0.0;
break;
case CLUTTER_SCROLL_SMOOTH:
g_assert_not_reached ();
break;
}
}
static void
meta_virtual_input_device_native_notify_discrete_scroll (ClutterVirtualInputDevice *virtual_device,
uint64_t time_us,
ClutterScrollDirection direction,
ClutterScrollSource scroll_source)
{
MetaVirtualInputDeviceNative *virtual_evdev =
META_VIRTUAL_INPUT_DEVICE_NATIVE (virtual_device);
double discrete_dx = 0.0, discrete_dy = 0.0;
if (time_us == CLUTTER_CURRENT_TIME)
time_us = g_get_monotonic_time ();
direction_to_discrete (direction, &discrete_dx, &discrete_dy);
meta_seat_native_notify_discrete_scroll (virtual_evdev->seat,
virtual_evdev->device,
time_us,
discrete_dx, discrete_dy,
scroll_source);
}
static void
meta_virtual_input_device_native_notify_scroll_continuous (ClutterVirtualInputDevice *virtual_device,
uint64_t time_us,
double dx,
double dy,
ClutterScrollSource scroll_source,
ClutterScrollFinishFlags finish_flags)
{
MetaVirtualInputDeviceNative *virtual_evdev =
META_VIRTUAL_INPUT_DEVICE_NATIVE (virtual_device);
if (time_us == CLUTTER_CURRENT_TIME)
time_us = g_get_monotonic_time ();
meta_seat_native_notify_scroll_continuous (virtual_evdev->seat,
virtual_evdev->device,
time_us,
dx, dy,
scroll_source,
CLUTTER_SCROLL_FINISHED_NONE);
}
static void
meta_virtual_input_device_native_notify_touch_down (ClutterVirtualInputDevice *virtual_device,
uint64_t time_us,
int device_slot,
double x,
double y)
{
MetaVirtualInputDeviceNative *virtual_evdev =
META_VIRTUAL_INPUT_DEVICE_NATIVE (virtual_device);
MetaInputDeviceNative *device_evdev =
META_INPUT_DEVICE_NATIVE (virtual_evdev->device);
MetaTouchState *touch_state;
if (time_us == CLUTTER_CURRENT_TIME)
time_us = g_get_monotonic_time ();
touch_state = meta_input_device_native_acquire_touch_state (device_evdev,
device_slot);
if (!touch_state)
return;
touch_state->coords.x = x;
touch_state->coords.y = y;
meta_seat_native_notify_touch_event (virtual_evdev->seat,
virtual_evdev->device,
CLUTTER_TOUCH_BEGIN,
time_us,
touch_state->seat_slot,
touch_state->coords.x,
touch_state->coords.y);
}
static void
meta_virtual_input_device_native_notify_touch_motion (ClutterVirtualInputDevice *virtual_device,
uint64_t time_us,
int device_slot,
double x,
double y)
{
MetaVirtualInputDeviceNative *virtual_evdev =
META_VIRTUAL_INPUT_DEVICE_NATIVE (virtual_device);
MetaInputDeviceNative *device_evdev =
META_INPUT_DEVICE_NATIVE (virtual_evdev->device);
MetaTouchState *touch_state;
if (time_us == CLUTTER_CURRENT_TIME)
time_us = g_get_monotonic_time ();
touch_state = meta_input_device_native_lookup_touch_state (device_evdev,
device_slot);
if (!touch_state)
return;
touch_state->coords.x = x;
touch_state->coords.y = y;
meta_seat_native_notify_touch_event (virtual_evdev->seat,
virtual_evdev->device,
CLUTTER_TOUCH_BEGIN,
time_us,
touch_state->seat_slot,
touch_state->coords.x,
touch_state->coords.y);
}
static void
meta_virtual_input_device_native_notify_touch_up (ClutterVirtualInputDevice *virtual_device,
uint64_t time_us,
int device_slot)
{
MetaVirtualInputDeviceNative *virtual_evdev =
META_VIRTUAL_INPUT_DEVICE_NATIVE (virtual_device);
MetaInputDeviceNative *device_evdev =
META_INPUT_DEVICE_NATIVE (virtual_evdev->device);
MetaTouchState *touch_state;
if (time_us == CLUTTER_CURRENT_TIME)
time_us = g_get_monotonic_time ();
touch_state = meta_input_device_native_lookup_touch_state (device_evdev,
device_slot);
if (!touch_state)
return;
meta_seat_native_notify_touch_event (virtual_evdev->seat,
virtual_evdev->device,
CLUTTER_TOUCH_BEGIN,
time_us,
touch_state->seat_slot,
touch_state->coords.x,
touch_state->coords.y);
meta_input_device_native_release_touch_state (device_evdev, touch_state);
}
static void
meta_virtual_input_device_native_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
MetaVirtualInputDeviceNative *virtual_evdev =
META_VIRTUAL_INPUT_DEVICE_NATIVE (object);
switch (prop_id)
{
case PROP_SEAT:
g_value_set_pointer (value, virtual_evdev->seat);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
meta_virtual_input_device_native_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
MetaVirtualInputDeviceNative *virtual_evdev =
META_VIRTUAL_INPUT_DEVICE_NATIVE (object);
switch (prop_id)
{
case PROP_SEAT:
virtual_evdev->seat = g_value_get_pointer (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
meta_virtual_input_device_native_constructed (GObject *object)
{
ClutterVirtualInputDevice *virtual_device =
CLUTTER_VIRTUAL_INPUT_DEVICE (object);
MetaVirtualInputDeviceNative *virtual_evdev =
META_VIRTUAL_INPUT_DEVICE_NATIVE (object);
ClutterDeviceManager *manager;
ClutterInputDeviceType device_type;
ClutterStage *stage;
manager = clutter_virtual_input_device_get_manager (virtual_device);
device_type = clutter_virtual_input_device_get_device_type (virtual_device);
virtual_evdev->device =
meta_input_device_native_new_virtual (manager,
virtual_evdev->seat,
device_type,
CLUTTER_INPUT_MODE_SLAVE);
stage = meta_device_manager_native_get_stage (META_DEVICE_MANAGER_NATIVE (manager));
_clutter_input_device_set_stage (virtual_evdev->device, stage);
}
static void
meta_virtual_input_device_native_finalize (GObject *object)
{
ClutterVirtualInputDevice *virtual_device =
CLUTTER_VIRTUAL_INPUT_DEVICE (object);
MetaVirtualInputDeviceNative *virtual_evdev =
META_VIRTUAL_INPUT_DEVICE_NATIVE (object);
GObjectClass *object_class;
release_pressed_buttons (virtual_device);
g_clear_object (&virtual_evdev->device);
object_class =
G_OBJECT_CLASS (meta_virtual_input_device_native_parent_class);
object_class->finalize (object);
}
static void
meta_virtual_input_device_native_init (MetaVirtualInputDeviceNative *virtual_device_evdev)
{
}
static void
meta_virtual_input_device_native_class_init (MetaVirtualInputDeviceNativeClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
ClutterVirtualInputDeviceClass *virtual_input_device_class =
CLUTTER_VIRTUAL_INPUT_DEVICE_CLASS (klass);
object_class->get_property = meta_virtual_input_device_native_get_property;
object_class->set_property = meta_virtual_input_device_native_set_property;
object_class->constructed = meta_virtual_input_device_native_constructed;
object_class->finalize = meta_virtual_input_device_native_finalize;
virtual_input_device_class->notify_relative_motion = meta_virtual_input_device_native_notify_relative_motion;
virtual_input_device_class->notify_absolute_motion = meta_virtual_input_device_native_notify_absolute_motion;
virtual_input_device_class->notify_button = meta_virtual_input_device_native_notify_button;
virtual_input_device_class->notify_key = meta_virtual_input_device_native_notify_key;
virtual_input_device_class->notify_keyval = meta_virtual_input_device_native_notify_keyval;
virtual_input_device_class->notify_discrete_scroll = meta_virtual_input_device_native_notify_discrete_scroll;
virtual_input_device_class->notify_scroll_continuous = meta_virtual_input_device_native_notify_scroll_continuous;
virtual_input_device_class->notify_touch_down = meta_virtual_input_device_native_notify_touch_down;
virtual_input_device_class->notify_touch_motion = meta_virtual_input_device_native_notify_touch_motion;
virtual_input_device_class->notify_touch_up = meta_virtual_input_device_native_notify_touch_up;
obj_props[PROP_SEAT] = g_param_spec_pointer ("seat",
"Seat",
"Seat",
CLUTTER_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY);
g_object_class_install_properties (object_class, PROP_LAST, obj_props);
}