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/*
* Clutter.
*
* An OpenGL based 'interactive canvas' library.
*
* Copyright © 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>
*/
#include "config.h"
#include "clutter-input-device-xi2.h"
#include "clutter-debug.h"
#include "clutter-device-manager-private.h"
#include "clutter-event-private.h"
#include "clutter-private.h"
#include "clutter-stage-private.h"
#include "clutter-backend-x11.h"
#include "clutter-stage-x11.h"
#include <X11/extensions/XInput2.h>
typedef struct _ClutterInputDeviceClass ClutterInputDeviceXI2Class;
/* a specific XI2 input device */
struct _ClutterInputDeviceXI2
{
ClutterInputDevice device;
gint device_id;
};
#define N_BUTTONS 5
#define clutter_input_device_xi2_get_type _clutter_input_device_xi2_get_type
G_DEFINE_TYPE (ClutterInputDeviceXI2,
clutter_input_device_xi2,
CLUTTER_TYPE_INPUT_DEVICE);
static void
clutter_input_device_xi2_constructed (GObject *gobject)
{
ClutterInputDeviceXI2 *device_xi2 = CLUTTER_INPUT_DEVICE_XI2 (gobject);
g_object_get (gobject, "id", &device_xi2->device_id, NULL);
if (G_OBJECT_CLASS (clutter_input_device_xi2_parent_class)->constructed)
G_OBJECT_CLASS (clutter_input_device_xi2_parent_class)->constructed (gobject);
}
static gboolean
clutter_input_device_xi2_keycode_to_evdev (ClutterInputDevice *device,
guint hardware_keycode,
guint *evdev_keycode)
{
/* When using evdev under X11 the hardware keycodes are the evdev
keycodes plus 8. I haven't been able to find any documentation to
know what the +8 is for. FIXME: This should probably verify that
X server is using evdev. */
*evdev_keycode = hardware_keycode - 8;
return TRUE;
}
static void
clutter_input_device_xi2_class_init (ClutterInputDeviceXI2Class *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
ClutterInputDeviceClass *device_class = CLUTTER_INPUT_DEVICE_CLASS (klass);
gobject_class->constructed = clutter_input_device_xi2_constructed;
device_class->keycode_to_evdev = clutter_input_device_xi2_keycode_to_evdev;
}
static void
clutter_input_device_xi2_init (ClutterInputDeviceXI2 *self)
{
}
static ClutterModifierType
get_modifier_for_button (int i)
{
switch (i)
{
case 1:
return CLUTTER_BUTTON1_MASK;
case 2:
return CLUTTER_BUTTON2_MASK;
case 3:
return CLUTTER_BUTTON3_MASK;
case 4:
return CLUTTER_BUTTON4_MASK;
case 5:
return CLUTTER_BUTTON5_MASK;
default:
return 0;
}
}
void
_clutter_input_device_xi2_translate_state (ClutterEvent *event,
XIModifierState *modifiers_state,
XIButtonState *buttons_state,
XIGroupState *group_state)
{
guint button = 0;
guint base = 0;
guint latched = 0;
guint locked = 0;
guint effective;
if (modifiers_state)
{
base = (guint) modifiers_state->base;
latched = (guint) modifiers_state->latched;
locked = (guint) modifiers_state->locked;
}
if (buttons_state)
{
int len, i;
len = MIN (N_BUTTONS, buttons_state->mask_len * 8);
for (i = 0; i < len; i++)
{
if (!XIMaskIsSet (buttons_state->mask, i))
continue;
button |= get_modifier_for_button (i);
}
}
/* The XIButtonState sent in the event specifies the
* state of the buttons before the event. In order to
* get the current state of the buttons, we need to
* filter out the current button.
*/
switch (event->type)
{
case CLUTTER_BUTTON_PRESS:
button |= (get_modifier_for_button (event->button.button));
break;
case CLUTTER_BUTTON_RELEASE:
button &= ~(get_modifier_for_button (event->button.button));
break;
default:
break;
}
effective = button | base | latched | locked;
if (group_state)
effective |= (group_state->effective) << 13;
_clutter_event_set_state_full (event, button, base, latched, locked, effective);
}
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