src/input.c - weston - Git Browser for ODROID

 /*
  * Copyright © 2013 Intel Corporation
  *
  * Permission to use, copy, modify, distribute, and sell this software and
  * its documentation for any purpose is hereby granted without fee, provided
  * that the above copyright notice appear in all copies and that both that
  * copyright notice and this permission notice appear in supporting
  * documentation, and that the name of the copyright holders not be used in
  * advertising or publicity pertaining to distribution of the software
  * without specific, written prior permission.  The copyright holders make
  * no representations about the suitability of this software for any
  * purpose.  It is provided "as is" without express or implied warranty.
  *
  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
  * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
  * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
  * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
  * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
  * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */

 #include <stdlib.h>
 #include <stdint.h>
 #include <string.h>

 #include "compositor.h"

 static void
 lose_pointer_focus(struct wl_listener *listener, void *data)
 {
 	struct wl_pointer *pointer =
 		container_of(listener, struct wl_pointer, focus_listener);

 	pointer->focus_resource = NULL;
 }

 static void
 lose_keyboard_focus(struct wl_listener *listener, void *data)
 {
 	struct weston_keyboard *keyboard =
 		container_of(listener, struct weston_keyboard, focus_listener);

 	keyboard->focus_resource = NULL;
 }

 static void
 lose_touch_focus(struct wl_listener *listener, void *data)
 {
 	struct wl_touch *touch =
 		container_of(listener, struct wl_touch, focus_listener);

 	touch->focus_resource = NULL;
 }

 static void
 default_grab_focus(struct wl_pointer_grab *grab,
 		   struct wl_surface *surface, wl_fixed_t x, wl_fixed_t y)
 {
 	struct wl_pointer *pointer = grab->pointer;

 	if (pointer->button_count > 0)
 		return;

 	wl_pointer_set_focus(pointer, surface, x, y);
 }

 static void
 default_grab_motion(struct wl_pointer_grab *grab,
 		    uint32_t time, wl_fixed_t x, wl_fixed_t y)
 {
 	struct wl_resource *resource;

 	resource = grab->pointer->focus_resource;
 	if (resource)
 		wl_pointer_send_motion(resource, time, x, y);
 }

 static void
 default_grab_button(struct wl_pointer_grab *grab,
 		    uint32_t time, uint32_t button, uint32_t state_w)
 {
 	struct wl_pointer *pointer = grab->pointer;
 	struct wl_resource *resource;
 	uint32_t serial;
 	enum wl_pointer_button_state state = state_w;
 	struct wl_display *display;

 	resource = pointer->focus_resource;
 	if (resource) {
 		display = wl_client_get_display(resource->client);
 		serial = wl_display_next_serial(display);
 		wl_pointer_send_button(resource, serial, time, button, state_w);
 	}

 	if (pointer->button_count == 0 &&
 	    state == WL_POINTER_BUTTON_STATE_RELEASED)
 		wl_pointer_set_focus(pointer, pointer->current,
 				     pointer->current_x, pointer->current_y);
 }

 static const struct wl_pointer_grab_interface
 				default_pointer_grab_interface = {
 	default_grab_focus,
 	default_grab_motion,
 	default_grab_button
 };

 static void default_grab_touch_down(struct wl_touch_grab *grab,
 		uint32_t time,
 		int touch_id,
 		wl_fixed_t sx,
 		wl_fixed_t sy)
 {
 	struct wl_touch *touch = grab->touch;
 	struct wl_display *display;
 	uint32_t serial;

 	if (touch->focus_resource && touch->focus) {
 		display = wl_client_get_display(touch->focus_resource->client);
 		serial = wl_display_next_serial(display);
 		wl_touch_send_down(touch->focus_resource, serial, time,
 				&touch->focus->resource, touch_id, sx, sy);
 	}
 }

 static void default_grab_touch_up(struct wl_touch_grab *grab,
 		uint32_t time,
 		int touch_id)
 {
 	struct wl_touch *touch = grab->touch;
 	struct wl_display *display;
 	uint32_t serial;

 	if (touch->focus_resource) {
 		display = wl_client_get_display(touch->focus_resource->client);
 		serial = wl_display_next_serial(display);
 		wl_touch_send_up(touch->focus_resource, serial, time, touch_id);
 	}
 }

 static void default_grab_touch_motion(struct wl_touch_grab *grab,
 		uint32_t time,
 		int touch_id,
 		wl_fixed_t sx,
 		wl_fixed_t sy)
 {
 	struct wl_touch *touch = grab->touch;

 	if (touch->focus_resource) {
 		wl_touch_send_motion(touch->focus_resource, time,
 				touch_id, sx, sy);
 	}
 }

 static const struct wl_touch_grab_interface default_touch_grab_interface = {
 	default_grab_touch_down,
 	default_grab_touch_up,
 	default_grab_touch_motion
 };

 static void
 default_grab_key(struct weston_keyboard_grab *grab,
 		 uint32_t time, uint32_t key, uint32_t state)
 {
 	struct weston_keyboard *keyboard = grab->keyboard;
 	struct wl_resource *resource;
 	struct wl_display *display;
 	uint32_t serial;

 	resource = keyboard->focus_resource;
 	if (resource) {
 		display = wl_client_get_display(resource->client);
 		serial = wl_display_next_serial(display);
 		wl_keyboard_send_key(resource, serial, time, key, state);
 	}
 }

 static struct wl_resource *
 find_resource_for_surface(struct wl_list *list, struct wl_surface *surface)
 {
 	struct wl_resource *r;

 	if (!surface)
 		return NULL;

 	wl_list_for_each(r, list, link) {
 		if (r->client == surface->resource.client)
 			return r;
 	}

 	return NULL;
 }

 static void
 default_grab_modifiers(struct weston_keyboard_grab *grab, uint32_t serial,
 		       uint32_t mods_depressed, uint32_t mods_latched,
 		       uint32_t mods_locked, uint32_t group)
 {
 	struct weston_keyboard *keyboard = grab->keyboard;
 	struct wl_pointer *pointer = keyboard->seat->pointer;
 	struct wl_resource *resource, *pr;

 	resource = keyboard->focus_resource;
 	if (!resource)
 		return;

 	wl_keyboard_send_modifiers(resource, serial, mods_depressed,
 				   mods_latched, mods_locked, group);

 	if (pointer && pointer->focus && pointer->focus != keyboard->focus) {
 		pr = find_resource_for_surface(&keyboard->resource_list,
 					       pointer->focus);
 		if (pr) {
 			wl_keyboard_send_modifiers(pr,
 						   serial,
 						   keyboard->modifiers.mods_depressed,
 						   keyboard->modifiers.mods_latched,
 						   keyboard->modifiers.mods_locked,
 						   keyboard->modifiers.group);
 		}
 	}
 }

 static const struct weston_keyboard_grab_interface
 				default_keyboard_grab_interface = {
 	default_grab_key,
 	default_grab_modifiers,
 };

 WL_EXPORT void
 wl_pointer_init(struct wl_pointer *pointer)
 {
 	memset(pointer, 0, sizeof *pointer);
 	wl_list_init(&pointer->resource_list);
 	pointer->focus_listener.notify = lose_pointer_focus;
 	pointer->default_grab.interface = &default_pointer_grab_interface;
 	pointer->default_grab.pointer = pointer;
 	pointer->grab = &pointer->default_grab;
 	wl_signal_init(&pointer->focus_signal);

 	/* FIXME: Pick better co-ords. */
 	pointer->x = wl_fixed_from_int(100);
 	pointer->y = wl_fixed_from_int(100);
 }

 WL_EXPORT void
 wl_pointer_release(struct wl_pointer *pointer)
 {
 	/* XXX: What about pointer->resource_list? */
 	if (pointer->focus_resource)
 		wl_list_remove(&pointer->focus_listener.link);
 }

 WL_EXPORT void
 weston_keyboard_init(struct weston_keyboard *keyboard)
 {
 	memset(keyboard, 0, sizeof *keyboard);
 	wl_list_init(&keyboard->resource_list);
 	wl_array_init(&keyboard->keys);
 	keyboard->focus_listener.notify = lose_keyboard_focus;
 	keyboard->default_grab.interface = &default_keyboard_grab_interface;
 	keyboard->default_grab.keyboard = keyboard;
 	keyboard->grab = &keyboard->default_grab;
 	wl_signal_init(&keyboard->focus_signal);
 }

 WL_EXPORT void
 weston_keyboard_release(struct weston_keyboard *keyboard)
 {
 	/* XXX: What about keyboard->resource_list? */
 	if (keyboard->focus_resource)
 		wl_list_remove(&keyboard->focus_listener.link);
 	wl_array_release(&keyboard->keys);
 }

 WL_EXPORT void
 wl_touch_init(struct wl_touch *touch)
 {
 	memset(touch, 0, sizeof *touch);
 	wl_list_init(&touch->resource_list);
 	touch->focus_listener.notify = lose_touch_focus;
 	touch->default_grab.interface = &default_touch_grab_interface;
 	touch->default_grab.touch = touch;
 	touch->grab = &touch->default_grab;
 	wl_signal_init(&touch->focus_signal);
 }

 WL_EXPORT void
 wl_touch_release(struct wl_touch *touch)
 {
 	/* XXX: What about touch->resource_list? */
 	if (touch->focus_resource)
 		wl_list_remove(&touch->focus_listener.link);
 }

 WL_EXPORT void
 wl_seat_init(struct wl_seat *seat)
 {
 	memset(seat, 0, sizeof *seat);

 	wl_signal_init(&seat->destroy_signal);

 	seat->selection_data_source = NULL;
 	wl_list_init(&seat->base_resource_list);
 	wl_signal_init(&seat->selection_signal);
 	wl_list_init(&seat->drag_resource_list);
 	wl_signal_init(&seat->drag_icon_signal);
 }

 WL_EXPORT void
 wl_seat_release(struct wl_seat *seat)
 {
 	wl_signal_emit(&seat->destroy_signal, seat);

 	if (seat->pointer)
 		wl_pointer_release(seat->pointer);
 	if (seat->keyboard)
 		weston_keyboard_release(seat->keyboard);
 	if (seat->touch)
 		wl_touch_release(seat->touch);
 }

 static void
 seat_send_updated_caps(struct wl_seat *seat)
 {
 	struct wl_resource *r;
 	enum wl_seat_capability caps = 0;

 	if (seat->pointer)
 		caps |= WL_SEAT_CAPABILITY_POINTER;
 	if (seat->keyboard)
 		caps |= WL_SEAT_CAPABILITY_KEYBOARD;
 	if (seat->touch)
 		caps |= WL_SEAT_CAPABILITY_TOUCH;

 	wl_list_for_each(r, &seat->base_resource_list, link)
 		wl_seat_send_capabilities(r, caps);
 }

 WL_EXPORT void
 wl_seat_set_pointer(struct wl_seat *seat, struct wl_pointer *pointer)
 {
 	if (pointer && (seat->pointer || pointer->seat))
 		return; /* XXX: error? */
 	if (!pointer && !seat->pointer)
 		return;

 	seat->pointer = pointer;
 	if (pointer)
 		pointer->seat = seat;

 	seat_send_updated_caps(seat);
 }

 WL_EXPORT void
 wl_seat_set_keyboard(struct wl_seat *seat, struct weston_keyboard *keyboard)
 {
 	if (keyboard && (seat->keyboard || keyboard->seat))
 		return; /* XXX: error? */
 	if (!keyboard && !seat->keyboard)
 		return;

 	seat->keyboard = keyboard;
 	if (keyboard)
 		keyboard->seat = seat;

 	seat_send_updated_caps(seat);
 }

 WL_EXPORT void
 wl_seat_set_touch(struct wl_seat *seat, struct wl_touch *touch)
 {
 	if (touch && (seat->touch || touch->seat))
 		return; /* XXX: error? */
 	if (!touch && !seat->touch)
 		return;

 	seat->touch = touch;
 	if (touch)
 		touch->seat = seat;

 	seat_send_updated_caps(seat);
 }

 WL_EXPORT void
 wl_pointer_set_focus(struct wl_pointer *pointer, struct wl_surface *surface,
 		     wl_fixed_t sx, wl_fixed_t sy)
 {
 	struct weston_keyboard *kbd = pointer->seat->keyboard;
 	struct wl_resource *resource, *kr;
 	struct wl_display *display;
 	uint32_t serial;

 	resource = pointer->focus_resource;
 	if (resource && pointer->focus != surface) {
 		display = wl_client_get_display(resource->client);
 		serial = wl_display_next_serial(display);
 		wl_pointer_send_leave(resource, serial,
 				      &pointer->focus->resource);
 		wl_list_remove(&pointer->focus_listener.link);
 	}

 	resource = find_resource_for_surface(&pointer->resource_list,
 					     surface);
 	if (resource &&
 	    (pointer->focus != surface ||
 	     pointer->focus_resource != resource)) {
 		display = wl_client_get_display(resource->client);
 		serial = wl_display_next_serial(display);
 		if (kbd) {
 			kr = find_resource_for_surface(&kbd->resource_list,
 						       surface);
 			if (kr) {
 				wl_keyboard_send_modifiers(kr,
 							   serial,
 							   kbd->modifiers.mods_depressed,
 							   kbd->modifiers.mods_latched,
 							   kbd->modifiers.mods_locked,
 							   kbd->modifiers.group);
 			}
 		}
 		wl_pointer_send_enter(resource, serial, &surface->resource,
 				      sx, sy);
 		wl_signal_add(&resource->destroy_signal,
 			      &pointer->focus_listener);
 		pointer->focus_serial = serial;
 	}

 	pointer->focus_resource = resource;
 	pointer->focus = surface;
 	pointer->default_grab.focus = surface;
 	wl_signal_emit(&pointer->focus_signal, pointer);
 }

 WL_EXPORT void
 weston_keyboard_set_focus(struct weston_keyboard *keyboard,
 			  struct wl_surface *surface)
 {
 	struct wl_resource *resource;
 	struct wl_display *display;
 	uint32_t serial;

 	if (keyboard->focus_resource && keyboard->focus != surface) {
 		resource = keyboard->focus_resource;
 		display = wl_client_get_display(resource->client);
 		serial = wl_display_next_serial(display);
 		wl_keyboard_send_leave(resource, serial,
 				       &keyboard->focus->resource);
 		wl_list_remove(&keyboard->focus_listener.link);
 	}

 	resource = find_resource_for_surface(&keyboard->resource_list,
 					     surface);
 	if (resource &&
 	    (keyboard->focus != surface ||
 	     keyboard->focus_resource != resource)) {
 		display = wl_client_get_display(resource->client);
 		serial = wl_display_next_serial(display);
 		wl_keyboard_send_modifiers(resource, serial,
 					   keyboard->modifiers.mods_depressed,
 					   keyboard->modifiers.mods_latched,
 					   keyboard->modifiers.mods_locked,
 					   keyboard->modifiers.group);
 		wl_keyboard_send_enter(resource, serial, &surface->resource,
 				       &keyboard->keys);
 		wl_signal_add(&resource->destroy_signal,
 			      &keyboard->focus_listener);
 		keyboard->focus_serial = serial;
 	}

 	keyboard->focus_resource = resource;
 	keyboard->focus = surface;
 	wl_signal_emit(&keyboard->focus_signal, keyboard);
 }

 WL_EXPORT void
 weston_keyboard_start_grab(struct weston_keyboard *keyboard,
 			   struct weston_keyboard_grab *grab)
 {
 	keyboard->grab = grab;
 	grab->keyboard = keyboard;

 	/* XXX focus? */
 }

 WL_EXPORT void
 weston_keyboard_end_grab(struct weston_keyboard *keyboard)
 {
 	keyboard->grab = &keyboard->default_grab;
 }

 WL_EXPORT void
 wl_pointer_start_grab(struct wl_pointer *pointer, struct wl_pointer_grab *grab)
 {
 	const struct wl_pointer_grab_interface *interface;

 	pointer->grab = grab;
 	interface = pointer->grab->interface;
 	grab->pointer = pointer;

 	if (pointer->current)
 		interface->focus(pointer->grab, pointer->current,
 				 pointer->current_x, pointer->current_y);
 }

 WL_EXPORT void
 wl_pointer_end_grab(struct wl_pointer *pointer)
 {
 	const struct wl_pointer_grab_interface *interface;

 	pointer->grab = &pointer->default_grab;
 	interface = pointer->grab->interface;
 	interface->focus(pointer->grab, pointer->current,
 			 pointer->current_x, pointer->current_y);
 }

 static void
 current_surface_destroy(struct wl_listener *listener, void *data)
 {
 	struct wl_pointer *pointer =
 		container_of(listener, struct wl_pointer, current_listener);

 	pointer->current = NULL;
 }

 WL_EXPORT void
 wl_pointer_set_current(struct wl_pointer *pointer, struct wl_surface *surface)
 {
 	if (pointer->current)
 		wl_list_remove(&pointer->current_listener.link);

 	pointer->current = surface;

 	if (!surface)
 		return;

 	wl_signal_add(&surface->resource.destroy_signal,
 		      &pointer->current_listener);
 	pointer->current_listener.notify = current_surface_destroy;
 }

 WL_EXPORT void
 wl_touch_start_grab(struct wl_touch *touch, struct wl_touch_grab *grab)
 {
 	touch->grab = grab;
 	grab->touch = touch;
 }

 WL_EXPORT void
 wl_touch_end_grab(struct wl_touch *touch)
 {
 	touch->grab = &touch->default_grab;
 }
	/*
	* Copyright © 2013 Intel Corporation
	*
	* Permission to use, copy, modify, distribute, and sell this software and
	* its documentation for any purpose is hereby granted without fee, provided
	* that the above copyright notice appear in all copies and that both that
	* copyright notice and this permission notice appear in supporting
	* documentation, and that the name of the copyright holders not be used in
	* advertising or publicity pertaining to distribution of the software
	* without specific, written prior permission. The copyright holders make
	* no representations about the suitability of this software for any
	* purpose. It is provided "as is" without express or implied warranty.
	*
	* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
	* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
	* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
	* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
	* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
	* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
	* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
	*/

	#include <stdlib.h>
	#include <stdint.h>
	#include <string.h>

	#include "compositor.h"

	static void
	lose_pointer_focus(struct wl_listener listener, void data)
	{
	struct wl_pointer *pointer =
	container_of(listener, struct wl_pointer, focus_listener);

	pointer->focus_resource = NULL;
	}

	static void
	lose_keyboard_focus(struct wl_listener listener, void data)
	{
	struct weston_keyboard *keyboard =
	container_of(listener, struct weston_keyboard, focus_listener);

	keyboard->focus_resource = NULL;
	}

	static void
	lose_touch_focus(struct wl_listener listener, void data)
	{
	struct wl_touch *touch =
	container_of(listener, struct wl_touch, focus_listener);

	touch->focus_resource = NULL;
	}

	static void
	default_grab_focus(struct wl_pointer_grab *grab,
	struct wl_surface *surface, wl_fixed_t x, wl_fixed_t y)
	{
	struct wl_pointer *pointer = grab->pointer;

	if (pointer->button_count > 0)
	return;

	wl_pointer_set_focus(pointer, surface, x, y);
	}

	static void
	default_grab_motion(struct wl_pointer_grab *grab,
	uint32_t time, wl_fixed_t x, wl_fixed_t y)
	{
	struct wl_resource *resource;

	resource = grab->pointer->focus_resource;
	if (resource)
	wl_pointer_send_motion(resource, time, x, y);
	}

	static void
	default_grab_button(struct wl_pointer_grab *grab,
	uint32_t time, uint32_t button, uint32_t state_w)
	{
	struct wl_pointer *pointer = grab->pointer;
	struct wl_resource *resource;
	uint32_t serial;
	enum wl_pointer_button_state state = state_w;
	struct wl_display *display;

	resource = pointer->focus_resource;
	if (resource) {
	display = wl_client_get_display(resource->client);
	serial = wl_display_next_serial(display);
	wl_pointer_send_button(resource, serial, time, button, state_w);
	}

	if (pointer->button_count == 0 &&
	state == WL_POINTER_BUTTON_STATE_RELEASED)
	wl_pointer_set_focus(pointer, pointer->current,
	pointer->current_x, pointer->current_y);
	}

	static const struct wl_pointer_grab_interface
	default_pointer_grab_interface = {
	default_grab_focus,
	default_grab_motion,
	default_grab_button
	};

	static void default_grab_touch_down(struct wl_touch_grab *grab,
	uint32_t time,
	int touch_id,
	wl_fixed_t sx,
	wl_fixed_t sy)
	{
	struct wl_touch *touch = grab->touch;
	struct wl_display *display;
	uint32_t serial;

	if (touch->focus_resource && touch->focus) {
	display = wl_client_get_display(touch->focus_resource->client);
	serial = wl_display_next_serial(display);
	wl_touch_send_down(touch->focus_resource, serial, time,
	&touch->focus->resource, touch_id, sx, sy);
	}
	}

	static void default_grab_touch_up(struct wl_touch_grab *grab,
	uint32_t time,
	int touch_id)
	{
	struct wl_touch *touch = grab->touch;
	struct wl_display *display;
	uint32_t serial;

	if (touch->focus_resource) {
	display = wl_client_get_display(touch->focus_resource->client);
	serial = wl_display_next_serial(display);
	wl_touch_send_up(touch->focus_resource, serial, time, touch_id);
	}
	}

	static void default_grab_touch_motion(struct wl_touch_grab *grab,
	uint32_t time,
	int touch_id,
	wl_fixed_t sx,
	wl_fixed_t sy)
	{
	struct wl_touch *touch = grab->touch;

	if (touch->focus_resource) {
	wl_touch_send_motion(touch->focus_resource, time,
	touch_id, sx, sy);
	}
	}

	static const struct wl_touch_grab_interface default_touch_grab_interface = {
	default_grab_touch_down,
	default_grab_touch_up,
	default_grab_touch_motion
	};

	static void
	default_grab_key(struct weston_keyboard_grab *grab,
	uint32_t time, uint32_t key, uint32_t state)
	{
	struct weston_keyboard *keyboard = grab->keyboard;
	struct wl_resource *resource;
	struct wl_display *display;
	uint32_t serial;

	resource = keyboard->focus_resource;
	if (resource) {
	display = wl_client_get_display(resource->client);
	serial = wl_display_next_serial(display);
	wl_keyboard_send_key(resource, serial, time, key, state);
	}
	}

	static struct wl_resource *
	find_resource_for_surface(struct wl_list list, struct wl_surface surface)
	{
	struct wl_resource *r;

	if (!surface)
	return NULL;

	wl_list_for_each(r, list, link) {
	if (r->client == surface->resource.client)
	return r;
	}

	return NULL;
	}

	static void
	default_grab_modifiers(struct weston_keyboard_grab *grab, uint32_t serial,
	uint32_t mods_depressed, uint32_t mods_latched,
	uint32_t mods_locked, uint32_t group)
	{
	struct weston_keyboard *keyboard = grab->keyboard;
	struct wl_pointer *pointer = keyboard->seat->pointer;
	struct wl_resource resource, pr;

	resource = keyboard->focus_resource;
	if (!resource)
	return;

	wl_keyboard_send_modifiers(resource, serial, mods_depressed,
	mods_latched, mods_locked, group);

	if (pointer && pointer->focus && pointer->focus != keyboard->focus) {
	pr = find_resource_for_surface(&keyboard->resource_list,
	pointer->focus);
	if (pr) {
	wl_keyboard_send_modifiers(pr,
	serial,
	keyboard->modifiers.mods_depressed,
	keyboard->modifiers.mods_latched,
	keyboard->modifiers.mods_locked,
	keyboard->modifiers.group);
	}
	}
	}

	static const struct weston_keyboard_grab_interface
	default_keyboard_grab_interface = {
	default_grab_key,
	default_grab_modifiers,
	};

	WL_EXPORT void
	wl_pointer_init(struct wl_pointer *pointer)
	{
	memset(pointer, 0, sizeof *pointer);
	wl_list_init(&pointer->resource_list);
	pointer->focus_listener.notify = lose_pointer_focus;
	pointer->default_grab.interface = &default_pointer_grab_interface;
	pointer->default_grab.pointer = pointer;
	pointer->grab = &pointer->default_grab;
	wl_signal_init(&pointer->focus_signal);

	/* FIXME: Pick better co-ords. */
	pointer->x = wl_fixed_from_int(100);
	pointer->y = wl_fixed_from_int(100);
	}

	WL_EXPORT void
	wl_pointer_release(struct wl_pointer *pointer)
	{
	/* XXX: What about pointer->resource_list? */
	if (pointer->focus_resource)
	wl_list_remove(&pointer->focus_listener.link);
	}

	WL_EXPORT void
	weston_keyboard_init(struct weston_keyboard *keyboard)
	{
	memset(keyboard, 0, sizeof *keyboard);
	wl_list_init(&keyboard->resource_list);
	wl_array_init(&keyboard->keys);
	keyboard->focus_listener.notify = lose_keyboard_focus;
	keyboard->default_grab.interface = &default_keyboard_grab_interface;
	keyboard->default_grab.keyboard = keyboard;
	keyboard->grab = &keyboard->default_grab;
	wl_signal_init(&keyboard->focus_signal);
	}

	WL_EXPORT void
	weston_keyboard_release(struct weston_keyboard *keyboard)
	{
	/* XXX: What about keyboard->resource_list? */
	if (keyboard->focus_resource)
	wl_list_remove(&keyboard->focus_listener.link);
	wl_array_release(&keyboard->keys);
	}

	WL_EXPORT void
	wl_touch_init(struct wl_touch *touch)
	{
	memset(touch, 0, sizeof *touch);
	wl_list_init(&touch->resource_list);
	touch->focus_listener.notify = lose_touch_focus;
	touch->default_grab.interface = &default_touch_grab_interface;
	touch->default_grab.touch = touch;
	touch->grab = &touch->default_grab;
	wl_signal_init(&touch->focus_signal);
	}

	WL_EXPORT void
	wl_touch_release(struct wl_touch *touch)
	{
	/* XXX: What about touch->resource_list? */
	if (touch->focus_resource)
	wl_list_remove(&touch->focus_listener.link);
	}

	WL_EXPORT void
	wl_seat_init(struct wl_seat *seat)
	{
	memset(seat, 0, sizeof *seat);

	wl_signal_init(&seat->destroy_signal);

	seat->selection_data_source = NULL;
	wl_list_init(&seat->base_resource_list);
	wl_signal_init(&seat->selection_signal);
	wl_list_init(&seat->drag_resource_list);
	wl_signal_init(&seat->drag_icon_signal);
	}

	WL_EXPORT void
	wl_seat_release(struct wl_seat *seat)
	{
	wl_signal_emit(&seat->destroy_signal, seat);

	if (seat->pointer)
	wl_pointer_release(seat->pointer);
	if (seat->keyboard)
	weston_keyboard_release(seat->keyboard);
	if (seat->touch)
	wl_touch_release(seat->touch);
	}

	static void
	seat_send_updated_caps(struct wl_seat *seat)
	{
	struct wl_resource *r;
	enum wl_seat_capability caps = 0;

	if (seat->pointer)
	caps \|= WL_SEAT_CAPABILITY_POINTER;
	if (seat->keyboard)
	caps \|= WL_SEAT_CAPABILITY_KEYBOARD;
	if (seat->touch)
	caps \|= WL_SEAT_CAPABILITY_TOUCH;

	wl_list_for_each(r, &seat->base_resource_list, link)
	wl_seat_send_capabilities(r, caps);
	}

	WL_EXPORT void
	wl_seat_set_pointer(struct wl_seat seat, struct wl_pointer pointer)
	{
	if (pointer && (seat->pointer \|\| pointer->seat))
	return; /* XXX: error? */
	if (!pointer && !seat->pointer)
	return;

	seat->pointer = pointer;
	if (pointer)
	pointer->seat = seat;

	seat_send_updated_caps(seat);
	}

	WL_EXPORT void
	wl_seat_set_keyboard(struct wl_seat seat, struct weston_keyboard keyboard)
	{
	if (keyboard && (seat->keyboard \|\| keyboard->seat))
	return; /* XXX: error? */
	if (!keyboard && !seat->keyboard)
	return;

	seat->keyboard = keyboard;
	if (keyboard)
	keyboard->seat = seat;

	seat_send_updated_caps(seat);
	}

	WL_EXPORT void
	wl_seat_set_touch(struct wl_seat seat, struct wl_touch touch)
	{
	if (touch && (seat->touch \|\| touch->seat))
	return; /* XXX: error? */
	if (!touch && !seat->touch)
	return;

	seat->touch = touch;
	if (touch)
	touch->seat = seat;

	seat_send_updated_caps(seat);
	}

	WL_EXPORT void
	wl_pointer_set_focus(struct wl_pointer pointer, struct wl_surface surface,
	wl_fixed_t sx, wl_fixed_t sy)
	{
	struct weston_keyboard *kbd = pointer->seat->keyboard;
	struct wl_resource resource, kr;
	struct wl_display *display;
	uint32_t serial;

	resource = pointer->focus_resource;
	if (resource && pointer->focus != surface) {
	display = wl_client_get_display(resource->client);
	serial = wl_display_next_serial(display);
	wl_pointer_send_leave(resource, serial,
	&pointer->focus->resource);
	wl_list_remove(&pointer->focus_listener.link);
	}

	resource = find_resource_for_surface(&pointer->resource_list,
	surface);
	if (resource &&
	(pointer->focus != surface \|\|
	pointer->focus_resource != resource)) {
	display = wl_client_get_display(resource->client);
	serial = wl_display_next_serial(display);
	if (kbd) {
	kr = find_resource_for_surface(&kbd->resource_list,
	surface);
	if (kr) {
	wl_keyboard_send_modifiers(kr,
	serial,
	kbd->modifiers.mods_depressed,
	kbd->modifiers.mods_latched,
	kbd->modifiers.mods_locked,
	kbd->modifiers.group);
	}
	}
	wl_pointer_send_enter(resource, serial, &surface->resource,
	sx, sy);
	wl_signal_add(&resource->destroy_signal,
	&pointer->focus_listener);
	pointer->focus_serial = serial;
	}

	pointer->focus_resource = resource;
	pointer->focus = surface;
	pointer->default_grab.focus = surface;
	wl_signal_emit(&pointer->focus_signal, pointer);
	}

	WL_EXPORT void
	weston_keyboard_set_focus(struct weston_keyboard *keyboard,
	struct wl_surface *surface)
	{
	struct wl_resource *resource;
	struct wl_display *display;
	uint32_t serial;

	if (keyboard->focus_resource && keyboard->focus != surface) {
	resource = keyboard->focus_resource;
	display = wl_client_get_display(resource->client);
	serial = wl_display_next_serial(display);
	wl_keyboard_send_leave(resource, serial,
	&keyboard->focus->resource);
	wl_list_remove(&keyboard->focus_listener.link);
	}

	resource = find_resource_for_surface(&keyboard->resource_list,
	surface);
	if (resource &&
	(keyboard->focus != surface \|\|
	keyboard->focus_resource != resource)) {
	display = wl_client_get_display(resource->client);
	serial = wl_display_next_serial(display);
	wl_keyboard_send_modifiers(resource, serial,
	keyboard->modifiers.mods_depressed,
	keyboard->modifiers.mods_latched,
	keyboard->modifiers.mods_locked,
	keyboard->modifiers.group);
	wl_keyboard_send_enter(resource, serial, &surface->resource,
	&keyboard->keys);
	wl_signal_add(&resource->destroy_signal,
	&keyboard->focus_listener);
	keyboard->focus_serial = serial;
	}

	keyboard->focus_resource = resource;
	keyboard->focus = surface;
	wl_signal_emit(&keyboard->focus_signal, keyboard);
	}

	WL_EXPORT void
	weston_keyboard_start_grab(struct weston_keyboard *keyboard,
	struct weston_keyboard_grab *grab)
	{
	keyboard->grab = grab;
	grab->keyboard = keyboard;

	/* XXX focus? */
	}

	WL_EXPORT void
	weston_keyboard_end_grab(struct weston_keyboard *keyboard)
	{
	keyboard->grab = &keyboard->default_grab;
	}

	WL_EXPORT void
	wl_pointer_start_grab(struct wl_pointer pointer, struct wl_pointer_grab grab)
	{
	const struct wl_pointer_grab_interface *interface;

	pointer->grab = grab;
	interface = pointer->grab->interface;
	grab->pointer = pointer;

	if (pointer->current)
	interface->focus(pointer->grab, pointer->current,
	pointer->current_x, pointer->current_y);
	}

	WL_EXPORT void
	wl_pointer_end_grab(struct wl_pointer *pointer)
	{
	const struct wl_pointer_grab_interface *interface;

	pointer->grab = &pointer->default_grab;
	interface = pointer->grab->interface;
	interface->focus(pointer->grab, pointer->current,
	pointer->current_x, pointer->current_y);
	}

	static void
	current_surface_destroy(struct wl_listener listener, void data)
	{
	struct wl_pointer *pointer =
	container_of(listener, struct wl_pointer, current_listener);

	pointer->current = NULL;
	}

	WL_EXPORT void
	wl_pointer_set_current(struct wl_pointer pointer, struct wl_surface surface)
	{
	if (pointer->current)
	wl_list_remove(&pointer->current_listener.link);

	pointer->current = surface;

	if (!surface)
	return;

	wl_signal_add(&surface->resource.destroy_signal,
	&pointer->current_listener);
	pointer->current_listener.notify = current_surface_destroy;
	}

	WL_EXPORT void
	wl_touch_start_grab(struct wl_touch touch, struct wl_touch_grab grab)
	{
	touch->grab = grab;
	grab->touch = touch;
	}

	WL_EXPORT void
	wl_touch_end_grab(struct wl_touch *touch)
	{
	touch->grab = &touch->default_grab;
	}