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weston/libweston/input.c

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138 KiB

/*
* Copyright © 2013 Intel Corporation
* Copyright 2017-2018 Collabora, Ltd.
* Copyright 2017-2018 General Electric Company
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "config.h"
#include <stdbool.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <sys/mman.h>
#include <assert.h>
#include <unistd.h>
#include <values.h>
#include <fcntl.h>
#include <limits.h>
#include <errno.h>
#include "shared/helpers.h"
#include "shared/os-compatibility.h"
#include "shared/timespec-util.h"
#include <libweston/libweston.h>
#include "backend.h"
#include "libweston-internal.h"
#include "relative-pointer-unstable-v1-server-protocol.h"
#include "pointer-constraints-unstable-v1-server-protocol.h"
#include "input-timestamps-unstable-v1-server-protocol.h"
enum pointer_constraint_type {
POINTER_CONSTRAINT_TYPE_LOCK,
POINTER_CONSTRAINT_TYPE_CONFINE,
};
enum motion_direction {
MOTION_DIRECTION_POSITIVE_X = 1 << 0,
MOTION_DIRECTION_NEGATIVE_X = 1 << 1,
MOTION_DIRECTION_POSITIVE_Y = 1 << 2,
MOTION_DIRECTION_NEGATIVE_Y = 1 << 3,
};
struct vec2d {
double x, y;
};
struct line {
struct vec2d a;
struct vec2d b;
};
struct border {
struct line line;
enum motion_direction blocking_dir;
};
static void
maybe_warp_confined_pointer(struct weston_pointer_constraint *constraint);
static void
empty_region(pixman_region32_t *region)
{
pixman_region32_fini(region);
pixman_region32_init(region);
}
static void
region_init_infinite(pixman_region32_t *region)
{
pixman_region32_init_rect(region, INT32_MIN, INT32_MIN,
UINT32_MAX, UINT32_MAX);
}
static void
send_timestamp(struct wl_resource *resource,
const struct timespec *time)
{
uint32_t tv_sec_hi, tv_sec_lo, tv_nsec;
timespec_to_proto(time, &tv_sec_hi, &tv_sec_lo, &tv_nsec);
zwp_input_timestamps_v1_send_timestamp(resource, tv_sec_hi, tv_sec_lo,
tv_nsec);
}
static void
send_timestamps_for_input_resource(struct wl_resource *input_resource,
struct wl_list *list,
const struct timespec *time)
{
struct wl_resource *resource;
wl_resource_for_each(resource, list) {
if (wl_resource_get_user_data(resource) == input_resource)
send_timestamp(resource, time);
}
}
static void
remove_input_resource_from_timestamps(struct wl_resource *input_resource,
struct wl_list *list)
{
struct wl_resource *resource;
wl_resource_for_each(resource, list) {
if (wl_resource_get_user_data(resource) == input_resource)
wl_resource_set_user_data(resource, NULL);
}
}
/** Register a touchscreen input device
*
* \param touch The parent weston_touch that identifies the seat.
* \param syspath Unique device name.
* \param backend_data Backend private data if necessary.
* \param ops Calibration operations, or NULL for not able to run calibration.
* \return New touch device, or NULL on failure.
*/
WL_EXPORT struct weston_touch_device *
weston_touch_create_touch_device(struct weston_touch *touch,
const char *syspath,
void *backend_data,
const struct weston_touch_device_ops *ops)
{
struct weston_touch_device *device;
assert(syspath);
if (ops) {
assert(ops->get_output);
assert(ops->get_calibration_head_name);
assert(ops->get_calibration);
assert(ops->set_calibration);
}
device = zalloc(sizeof *device);
if (!device)
return NULL;
wl_signal_init(&device->destroy_signal);
device->syspath = strdup(syspath);
if (!device->syspath) {
free(device);
return NULL;
}
device->backend_data = backend_data;
device->ops = ops;
device->aggregate = touch;
wl_list_insert(touch->device_list.prev, &device->link);
return device;
}
/** Destroy the touch device. */
WL_EXPORT void
weston_touch_device_destroy(struct weston_touch_device *device)
{
wl_list_remove(&device->link);
wl_signal_emit(&device->destroy_signal, device);
free(device->syspath);
free(device);
}
/** Is it possible to run calibration on this touch device? */
WL_EXPORT bool
weston_touch_device_can_calibrate(struct weston_touch_device *device)
{
return !!device->ops;
}
static enum weston_touch_mode
weston_touch_device_get_mode(struct weston_touch_device *device)
{
return device->aggregate->seat->compositor->touch_mode;
}
static struct weston_pointer_client *
weston_pointer_client_create(struct wl_client *client)
{
struct weston_pointer_client *pointer_client;
pointer_client = zalloc(sizeof *pointer_client);
if (!pointer_client)
return NULL;
pointer_client->client = client;
wl_list_init(&pointer_client->pointer_resources);
wl_list_init(&pointer_client->relative_pointer_resources);
return pointer_client;
}
static void
weston_pointer_client_destroy(struct weston_pointer_client *pointer_client)
{
struct wl_resource *resource;
wl_resource_for_each(resource, &pointer_client->pointer_resources) {
wl_resource_set_user_data(resource, NULL);
}
wl_resource_for_each(resource,
&pointer_client->relative_pointer_resources) {
wl_resource_set_user_data(resource, NULL);
}
wl_list_remove(&pointer_client->pointer_resources);
wl_list_remove(&pointer_client->relative_pointer_resources);
free(pointer_client);
}
static bool
weston_pointer_client_is_empty(struct weston_pointer_client *pointer_client)
{
return (wl_list_empty(&pointer_client->pointer_resources) &&
wl_list_empty(&pointer_client->relative_pointer_resources));
}
static struct weston_pointer_client *
weston_pointer_get_pointer_client(struct weston_pointer *pointer,
struct wl_client *client)
{
struct weston_pointer_client *pointer_client;
wl_list_for_each(pointer_client, &pointer->pointer_clients, link) {
if (pointer_client->client == client)
return pointer_client;
}
return NULL;
}
static struct weston_pointer_client *
weston_pointer_ensure_pointer_client(struct weston_pointer *pointer,
struct wl_client *client)
{
struct weston_pointer_client *pointer_client;
pointer_client = weston_pointer_get_pointer_client(pointer, client);
if (pointer_client)
return pointer_client;
pointer_client = weston_pointer_client_create(client);
wl_list_insert(&pointer->pointer_clients, &pointer_client->link);
if (pointer->focus &&
pointer->focus->surface->resource &&
wl_resource_get_client(pointer->focus->surface->resource) == client) {
pointer->focus_client = pointer_client;
}
return pointer_client;
}
static void
weston_pointer_cleanup_pointer_client(struct weston_pointer *pointer,
struct weston_pointer_client *pointer_client)
{
if (weston_pointer_client_is_empty(pointer_client)) {
if (pointer->focus_client == pointer_client)
pointer->focus_client = NULL;
wl_list_remove(&pointer_client->link);
weston_pointer_client_destroy(pointer_client);
}
}
static void
unbind_pointer_client_resource(struct wl_resource *resource)
{
struct weston_pointer *pointer = wl_resource_get_user_data(resource);
struct wl_client *client = wl_resource_get_client(resource);
struct weston_pointer_client *pointer_client;
wl_list_remove(wl_resource_get_link(resource));
if (pointer) {
pointer_client = weston_pointer_get_pointer_client(pointer,
client);
assert(pointer_client);
remove_input_resource_from_timestamps(resource,
&pointer->timestamps_list);
weston_pointer_cleanup_pointer_client(pointer, pointer_client);
}
}
static void unbind_resource(struct wl_resource *resource)
{
wl_list_remove(wl_resource_get_link(resource));
}
WL_EXPORT void
weston_pointer_motion_to_abs(struct weston_pointer *pointer,
struct weston_pointer_motion_event *event,
wl_fixed_t *x, wl_fixed_t *y)
{
if (event->mask & WESTON_POINTER_MOTION_ABS) {
*x = wl_fixed_from_double(event->x);
*y = wl_fixed_from_double(event->y);
} else if (event->mask & WESTON_POINTER_MOTION_REL) {
*x = pointer->x + wl_fixed_from_double(event->dx);
*y = pointer->y + wl_fixed_from_double(event->dy);
} else {
assert(!"invalid motion event");
*x = *y = 0;
}
}
static bool
weston_pointer_motion_to_rel(struct weston_pointer *pointer,
struct weston_pointer_motion_event *event,
double *dx, double *dy,
double *dx_unaccel, double *dy_unaccel)
{
if (event->mask & WESTON_POINTER_MOTION_REL &&
event->mask & WESTON_POINTER_MOTION_REL_UNACCEL) {
*dx = event->dx;
*dy = event->dy;
*dx_unaccel = event->dx_unaccel;
*dy_unaccel = event->dy_unaccel;
return true;
} else if (event->mask & WESTON_POINTER_MOTION_REL) {
*dx_unaccel = *dx = event->dx;
*dy_unaccel = *dy = event->dy;
return true;
} else if (event->mask & WESTON_POINTER_MOTION_REL_UNACCEL) {
*dx_unaccel = *dx = event->dx_unaccel;
*dy_unaccel = *dy = event->dy_unaccel;
return true;
} else {
return false;
}
}
WL_EXPORT void
weston_seat_repick(struct weston_seat *seat)
{
const struct weston_pointer *pointer = weston_seat_get_pointer(seat);
if (!pointer)
return;
pointer->grab->interface->focus(pointer->grab);
}
static void
weston_compositor_idle_inhibit(struct weston_compositor *compositor)
{
weston_compositor_wake(compositor);
compositor->idle_inhibit++;
}
static void
weston_compositor_idle_release(struct weston_compositor *compositor)
{
compositor->idle_inhibit--;
weston_compositor_wake(compositor);
}
static void
pointer_focus_view_destroyed(struct wl_listener *listener, void *data)
{
struct weston_pointer *pointer =
container_of(listener, struct weston_pointer,
focus_view_listener);
weston_pointer_clear_focus(pointer);
}
static void
pointer_focus_resource_destroyed(struct wl_listener *listener, void *data)
{
struct weston_pointer *pointer =
container_of(listener, struct weston_pointer,
focus_resource_listener);
weston_pointer_clear_focus(pointer);
}
static void
keyboard_focus_resource_destroyed(struct wl_listener *listener, void *data)
{
struct weston_keyboard *keyboard =
container_of(listener, struct weston_keyboard,
focus_resource_listener);
weston_keyboard_set_focus(keyboard, NULL);
}
static void
touch_focus_view_destroyed(struct wl_listener *listener, void *data)
{
struct weston_touch *touch =
container_of(listener, struct weston_touch,
focus_view_listener);
weston_touch_set_focus(touch, NULL);
}
static void
touch_focus_resource_destroyed(struct wl_listener *listener, void *data)
{
struct weston_touch *touch =
container_of(listener, struct weston_touch,
focus_resource_listener);
weston_touch_set_focus(touch, NULL);
}
static void
move_resources(struct wl_list *destination, struct wl_list *source)
{
wl_list_insert_list(destination, source);
wl_list_init(source);
}
static void
move_resources_for_client(struct wl_list *destination,
struct wl_list *source,
struct wl_client *client)
{
struct wl_resource *resource, *tmp;
wl_resource_for_each_safe(resource, tmp, source) {
if (wl_resource_get_client(resource) == client) {
wl_list_remove(wl_resource_get_link(resource));
wl_list_insert(destination,
wl_resource_get_link(resource));
}
}
}
static void
default_grab_pointer_focus(struct weston_pointer_grab *grab)
{
struct weston_pointer *pointer = grab->pointer;
struct weston_view *view;
wl_fixed_t sx, sy;
if (pointer->button_count > 0)
return;
view = weston_compositor_pick_view(pointer->seat->compositor,
pointer->x, pointer->y,
&sx, &sy);
if (pointer->focus != view || pointer->sx != sx || pointer->sy != sy)
weston_pointer_set_focus(pointer, view, sx, sy);
}
static void
pointer_send_relative_motion(struct weston_pointer *pointer,
const struct timespec *time,
struct weston_pointer_motion_event *event)
{
uint64_t time_usec;
double dx, dy, dx_unaccel, dy_unaccel;
wl_fixed_t dxf, dyf, dxf_unaccel, dyf_unaccel;
struct wl_list *resource_list;
struct wl_resource *resource;
if (!pointer->focus_client)
return;
if (!weston_pointer_motion_to_rel(pointer, event,
&dx, &dy,
&dx_unaccel, &dy_unaccel))
return;
resource_list = &pointer->focus_client->relative_pointer_resources;
time_usec = timespec_to_usec(&event->time);
if (time_usec == 0)
time_usec = timespec_to_usec(time);
dxf = wl_fixed_from_double(dx);
dyf = wl_fixed_from_double(dy);
dxf_unaccel = wl_fixed_from_double(dx_unaccel);
dyf_unaccel = wl_fixed_from_double(dy_unaccel);
wl_resource_for_each(resource, resource_list) {
zwp_relative_pointer_v1_send_relative_motion(
resource,
(uint32_t) (time_usec >> 32),
(uint32_t) time_usec,
dxf, dyf,
dxf_unaccel, dyf_unaccel);
}
}
static void
pointer_send_motion(struct weston_pointer *pointer,
const struct timespec *time,
wl_fixed_t sx, wl_fixed_t sy)
{
struct wl_list *resource_list;
struct wl_resource *resource;
uint32_t msecs;
if (!pointer->focus_client)
return;
resource_list = &pointer->focus_client->pointer_resources;
msecs = timespec_to_msec(time);
wl_resource_for_each(resource, resource_list) {
send_timestamps_for_input_resource(resource,
&pointer->timestamps_list,
time);
wl_pointer_send_motion(resource, msecs, sx, sy);
}
}
WL_EXPORT void
weston_pointer_send_motion(struct weston_pointer *pointer,
const struct timespec *time,
struct weston_pointer_motion_event *event)
{
wl_fixed_t x, y;
wl_fixed_t old_sx = pointer->sx;
wl_fixed_t old_sy = pointer->sy;
if (pointer->focus) {
weston_pointer_motion_to_abs(pointer, event, &x, &y);
weston_view_from_global_fixed(pointer->focus, x, y,
&pointer->sx, &pointer->sy);
}
weston_pointer_move(pointer, event);
if (old_sx != pointer->sx || old_sy != pointer->sy) {
pointer_send_motion(pointer, time,
pointer->sx, pointer->sy);
}
pointer_send_relative_motion(pointer, time, event);
}
static void
default_grab_pointer_motion(struct weston_pointer_grab *grab,
const struct timespec *time,
struct weston_pointer_motion_event *event)
{
weston_pointer_send_motion(grab->pointer, time, event);
}
/** Check if the pointer has focused resources.
*
* \param pointer The pointer to check for focused resources.
* \return Whether or not this pointer has focused resources
*/
WL_EXPORT bool
weston_pointer_has_focus_resource(struct weston_pointer *pointer)
{
if (!pointer->focus_client)
return false;
if (wl_list_empty(&pointer->focus_client->pointer_resources))
return false;
return true;
}
/** Send wl_pointer.button events to focused resources.
*
* \param pointer The pointer where the button events originates from.
* \param time The timestamp of the event
* \param button The button value of the event
* \param state The state enum value of the event
*
* For every resource that is currently in focus, send a wl_pointer.button event
* with the passed parameters. The focused resources are the wl_pointer
* resources of the client which currently has the surface with pointer focus.
*/
WL_EXPORT void
weston_pointer_send_button(struct weston_pointer *pointer,
const struct timespec *time, uint32_t button,
enum wl_pointer_button_state state)
{
struct wl_display *display = pointer->seat->compositor->wl_display;
struct wl_list *resource_list;
struct wl_resource *resource;
uint32_t serial;
uint32_t msecs;
if (!weston_pointer_has_focus_resource(pointer))
return;
resource_list = &pointer->focus_client->pointer_resources;
serial = wl_display_next_serial(display);
msecs = timespec_to_msec(time);
wl_resource_for_each(resource, resource_list) {
send_timestamps_for_input_resource(resource,
&pointer->timestamps_list,
time);
wl_pointer_send_button(resource, serial, msecs, button, state);
}
}
static void
default_grab_pointer_button(struct weston_pointer_grab *grab,
const struct timespec *time, uint32_t button,
enum wl_pointer_button_state state)
{
struct weston_pointer *pointer = grab->pointer;
struct weston_compositor *compositor = pointer->seat->compositor;
struct weston_view *view;
wl_fixed_t sx, sy;
weston_pointer_send_button(pointer, time, button, state);
if (pointer->button_count == 0 &&
state == WL_POINTER_BUTTON_STATE_RELEASED) {
view = weston_compositor_pick_view(compositor,
pointer->x, pointer->y,
&sx, &sy);
weston_pointer_set_focus(pointer, view, sx, sy);
}
}
/** Send wl_pointer.axis events to focused resources.
*
* \param pointer The pointer where the axis events originates from.
* \param time The timestamp of the event
* \param event The axis value of the event
*
* For every resource that is currently in focus, send a wl_pointer.axis event
* with the passed parameters. The focused resources are the wl_pointer
* resources of the client which currently has the surface with pointer focus.
*/
WL_EXPORT void
weston_pointer_send_axis(struct weston_pointer *pointer,
const struct timespec *time,
struct weston_pointer_axis_event *event)
{
struct wl_resource *resource;
struct wl_list *resource_list;
uint32_t msecs;
if (!weston_pointer_has_focus_resource(pointer))
return;
resource_list = &pointer->focus_client->pointer_resources;
msecs = timespec_to_msec(time);
wl_resource_for_each(resource, resource_list) {
if (event->has_discrete &&
wl_resource_get_version(resource) >=
WL_POINTER_AXIS_DISCRETE_SINCE_VERSION)
wl_pointer_send_axis_discrete(resource, event->axis,
event->discrete);
if (event->value) {
send_timestamps_for_input_resource(resource,
&pointer->timestamps_list,
time);
wl_pointer_send_axis(resource, msecs,
event->axis,
wl_fixed_from_double(event->value));
} else if (wl_resource_get_version(resource) >=
WL_POINTER_AXIS_STOP_SINCE_VERSION) {
send_timestamps_for_input_resource(resource,
&pointer->timestamps_list,
time);
wl_pointer_send_axis_stop(resource, msecs,
event->axis);
}
}
}
/** Send wl_pointer.axis_source events to focused resources.
*
* \param pointer The pointer where the axis_source events originates from.
* \param source The axis_source enum value of the event
*
* For every resource that is currently in focus, send a wl_pointer.axis_source
* event with the passed parameter. The focused resources are the wl_pointer
* resources of the client which currently has the surface with pointer focus.
*/
WL_EXPORT void
weston_pointer_send_axis_source(struct weston_pointer *pointer,
enum wl_pointer_axis_source source)
{
struct wl_resource *resource;
struct wl_list *resource_list;
if (!weston_pointer_has_focus_resource(pointer))
return;
resource_list = &pointer->focus_client->pointer_resources;
wl_resource_for_each(resource, resource_list) {
if (wl_resource_get_version(resource) >=
WL_POINTER_AXIS_SOURCE_SINCE_VERSION) {
wl_pointer_send_axis_source(resource, source);
}
}
}
static void
pointer_send_frame(struct wl_resource *resource)
{
if (wl_resource_get_version(resource) >=
WL_POINTER_FRAME_SINCE_VERSION) {
wl_pointer_send_frame(resource);
}
}
/** Send wl_pointer.frame events to focused resources.
*
* \param pointer The pointer where the frame events originates from.
*
* For every resource that is currently in focus, send a wl_pointer.frame event.
* The focused resources are the wl_pointer resources of the client which
* currently has the surface with pointer focus.
*/
WL_EXPORT void
weston_pointer_send_frame(struct weston_pointer *pointer)
{
struct wl_resource *resource;
struct wl_list *resource_list;
if (!weston_pointer_has_focus_resource(pointer))
return;
resource_list = &pointer->focus_client->pointer_resources;
wl_resource_for_each(resource, resource_list)
pointer_send_frame(resource);
}
static void
default_grab_pointer_axis(struct weston_pointer_grab *grab,
const struct timespec *time,
struct weston_pointer_axis_event *event)
{
weston_pointer_send_axis(grab->pointer, time, event);
}
static void
default_grab_pointer_axis_source(struct weston_pointer_grab *grab,
enum wl_pointer_axis_source source)
{
weston_pointer_send_axis_source(grab->pointer, source);
}
static void
default_grab_pointer_frame(struct weston_pointer_grab *grab)
{
weston_pointer_send_frame(grab->pointer);
}
static void
default_grab_pointer_cancel(struct weston_pointer_grab *grab)
{
}
static const struct weston_pointer_grab_interface
default_pointer_grab_interface = {
default_grab_pointer_focus,
default_grab_pointer_motion,
default_grab_pointer_button,
default_grab_pointer_axis,
default_grab_pointer_axis_source,
default_grab_pointer_frame,
default_grab_pointer_cancel,
};
/** Check if the touch has focused resources.
*
* \param touch The touch to check for focused resources.
* \return Whether or not this touch has focused resources
*/
WL_EXPORT bool
weston_touch_has_focus_resource(struct weston_touch *touch)
{
if (!touch->focus)
return false;
if (wl_list_empty(&touch->focus_resource_list))
return false;
return true;
}
/** Send wl_touch.down events to focused resources.
*
* \param touch The touch where the down events originates from.
* \param time The timestamp of the event
* \param touch_id The touch_id value of the event
* \param x The x value of the event
* \param y The y value of the event
*
* For every resource that is currently in focus, send a wl_touch.down event
* with the passed parameters. The focused resources are the wl_touch
* resources of the client which currently has the surface with touch focus.
*/
WL_EXPORT void
weston_touch_send_down(struct weston_touch *touch, const struct timespec *time,
int touch_id, wl_fixed_t x, wl_fixed_t y)
{
struct wl_display *display = touch->seat->compositor->wl_display;
uint32_t serial;
struct wl_resource *resource;
struct wl_list *resource_list;
wl_fixed_t sx, sy;
uint32_t msecs;
if (!weston_touch_has_focus_resource(touch))
return;
weston_view_from_global_fixed(touch->focus, x, y, &sx, &sy);
resource_list = &touch->focus_resource_list;
serial = wl_display_next_serial(display);
msecs = timespec_to_msec(time);
wl_resource_for_each(resource, resource_list) {
send_timestamps_for_input_resource(resource,
&touch->timestamps_list,
time);
wl_touch_send_down(resource, serial, msecs,
touch->focus->surface->resource,
touch_id, sx, sy);
}
}
static void
default_grab_touch_down(struct weston_touch_grab *grab,
const struct timespec *time, int touch_id,
wl_fixed_t x, wl_fixed_t y)
{
weston_touch_send_down(grab->touch, time, touch_id, x, y);
}
/** Send wl_touch.up events to focused resources.
*
* \param touch The touch where the up events originates from.
* \param time The timestamp of the event
* \param touch_id The touch_id value of the event
*
* For every resource that is currently in focus, send a wl_touch.up event
* with the passed parameters. The focused resources are the wl_touch
* resources of the client which currently has the surface with touch focus.
*/
WL_EXPORT void
weston_touch_send_up(struct weston_touch *touch, const struct timespec *time,
int touch_id)
{
struct wl_display *display = touch->seat->compositor->wl_display;
uint32_t serial;
struct wl_resource *resource;
struct wl_list *resource_list;
uint32_t msecs;
if (!weston_touch_has_focus_resource(touch))
return;
resource_list = &touch->focus_resource_list;
serial = wl_display_next_serial(display);
msecs = timespec_to_msec(time);
wl_resource_for_each(resource, resource_list) {
send_timestamps_for_input_resource(resource,
&touch->timestamps_list,
time);
wl_touch_send_up(resource, serial, msecs, touch_id);
}
}
static void
default_grab_touch_up(struct weston_touch_grab *grab,
const struct timespec *time, int touch_id)
{
weston_touch_send_up(grab->touch, time, touch_id);
}
/** Send wl_touch.motion events to focused resources.
*
* \param touch The touch where the motion events originates from.
* \param time The timestamp of the event
* \param touch_id The touch_id value of the event
* \param x The x value of the event
* \param y The y value of the event
*
* For every resource that is currently in focus, send a wl_touch.motion event
* with the passed parameters. The focused resources are the wl_touch
* resources of the client which currently has the surface with touch focus.
*/
WL_EXPORT void
weston_touch_send_motion(struct weston_touch *touch,
const struct timespec *time, int touch_id,
wl_fixed_t x, wl_fixed_t y)
{
struct wl_resource *resource;
struct wl_list *resource_list;
wl_fixed_t sx, sy;
uint32_t msecs;
if (!weston_touch_has_focus_resource(touch))
return;
weston_view_from_global_fixed(touch->focus, x, y, &sx, &sy);
resource_list = &touch->focus_resource_list;
msecs = timespec_to_msec(time);
wl_resource_for_each(resource, resource_list) {
send_timestamps_for_input_resource(resource,
&touch->timestamps_list,
time);
wl_touch_send_motion(resource, msecs,
touch_id, sx, sy);
}
}
static void
default_grab_touch_motion(struct weston_touch_grab *grab,
const struct timespec *time, int touch_id,
wl_fixed_t x, wl_fixed_t y)
{
weston_touch_send_motion(grab->touch, time, touch_id, x, y);
}
/** Send wl_touch.frame events to focused resources.
*
* \param touch The touch where the frame events originates from.
*
* For every resource that is currently in focus, send a wl_touch.frame event.
* The focused resources are the wl_touch resources of the client which
* currently has the surface with touch focus.
*/
WL_EXPORT void
weston_touch_send_frame(struct weston_touch *touch)
{
struct wl_resource *resource;
if (!weston_touch_has_focus_resource(touch))
return;
wl_resource_for_each(resource, &touch->focus_resource_list)
wl_touch_send_frame(resource);
}
static void
default_grab_touch_frame(struct weston_touch_grab *grab)
{
weston_touch_send_frame(grab->touch);
}
static void
default_grab_touch_cancel(struct weston_touch_grab *grab)
{
}
static const struct weston_touch_grab_interface default_touch_grab_interface = {
default_grab_touch_down,
default_grab_touch_up,
default_grab_touch_motion,
default_grab_touch_frame,
default_grab_touch_cancel,
};
/** Check if the keyboard has focused resources.
*
* \param keyboard The keyboard to check for focused resources.
* \return Whether or not this keyboard has focused resources
*/
WL_EXPORT bool
weston_keyboard_has_focus_resource(struct weston_keyboard *keyboard)
{
if (!keyboard->focus)
return false;
if (wl_list_empty(&keyboard->focus_resource_list))
return false;
return true;
}
/** Send wl_keyboard.key events to focused resources.
*
* \param keyboard The keyboard where the key events originates from.
* \param time The timestamp of the event
* \param key The key value of the event
* \param state The state enum value of the event
*
* For every resource that is currently in focus, send a wl_keyboard.key event
* with the passed parameters. The focused resources are the wl_keyboard
* resources of the client which currently has the surface with keyboard focus.
*/
WL_EXPORT void
weston_keyboard_send_key(struct weston_keyboard *keyboard,
const struct timespec *time, uint32_t key,
enum wl_keyboard_key_state state)
{
struct wl_resource *resource;
struct wl_display *display = keyboard->seat->compositor->wl_display;
uint32_t serial;
struct wl_list *resource_list;
uint32_t msecs;
if (!weston_keyboard_has_focus_resource(keyboard))
return;
resource_list = &keyboard->focus_resource_list;
serial = wl_display_next_serial(display);
msecs = timespec_to_msec(time);
wl_resource_for_each(resource, resource_list) {
send_timestamps_for_input_resource(resource,
&keyboard->timestamps_list,
time);
wl_keyboard_send_key(resource, serial, msecs, key, state);
}
};
static void
default_grab_keyboard_key(struct weston_keyboard_grab *grab,
const struct timespec *time, uint32_t key,
uint32_t state)
{
weston_keyboard_send_key(grab->keyboard, time, key, state);
}
static void
send_modifiers_to_resource(struct weston_keyboard *keyboard,
struct wl_resource *resource,
uint32_t serial)
{
wl_keyboard_send_modifiers(resource,
serial,
keyboard->modifiers.mods_depressed,
keyboard->modifiers.mods_latched,
keyboard->modifiers.mods_locked,
keyboard->modifiers.group);
}
static void
send_modifiers_to_client_in_list(struct wl_client *client,
struct wl_list *list,
uint32_t serial,
struct weston_keyboard *keyboard)
{
struct wl_resource *resource;
wl_resource_for_each(resource, list) {
if (wl_resource_get_client(resource) == client)
send_modifiers_to_resource(keyboard,
resource,
serial);
}
}
static struct weston_pointer_client *
find_pointer_client_for_surface(struct weston_pointer *pointer,
struct weston_surface *surface)
{
struct wl_client *client;
if (!surface)
return NULL;
if (!surface->resource)
return NULL;
client = wl_resource_get_client(surface->resource);
return weston_pointer_get_pointer_client(pointer, client);
}
static struct weston_pointer_client *
find_pointer_client_for_view(struct weston_pointer *pointer, struct weston_view *view)
{
if (!view)
return NULL;
return find_pointer_client_for_surface(pointer, view->surface);
}
static struct wl_resource *
find_resource_for_surface(struct wl_list *list, struct weston_surface *surface)
{
if (!surface)
return NULL;
if (!surface->resource)
return NULL;
return wl_resource_find_for_client(list, wl_resource_get_client(surface->resource));
}
/** Send wl_keyboard.modifiers events to focused resources and pointer
* focused resources.
*
* \param keyboard The keyboard where the modifiers events originates from.
* \param serial The serial of the event
* \param mods_depressed The mods_depressed value of the event
* \param mods_latched The mods_latched value of the event
* \param mods_locked The mods_locked value of the event
* \param group The group value of the event
*
* For every resource that is currently in focus, send a wl_keyboard.modifiers
* event with the passed parameters. The focused resources are the wl_keyboard
* resources of the client which currently has the surface with keyboard focus.
* This also sends wl_keyboard.modifiers events to the wl_keyboard resources of
* the client having pointer focus (if different from the keyboard focus client).
*/
WL_EXPORT void
weston_keyboard_send_modifiers(struct weston_keyboard *keyboard,
uint32_t serial, uint32_t mods_depressed,
uint32_t mods_latched,
uint32_t mods_locked, uint32_t group)
{
struct weston_pointer *pointer =
weston_seat_get_pointer(keyboard->seat);
if (weston_keyboard_has_focus_resource(keyboard)) {
struct wl_list *resource_list;
struct wl_resource *resource;
resource_list = &keyboard->focus_resource_list;
wl_resource_for_each(resource, resource_list) {
wl_keyboard_send_modifiers(resource, serial,
mods_depressed, mods_latched,
mods_locked, group);
}
}
if (pointer && pointer->focus && pointer->focus->surface->resource &&
pointer->focus->surface != keyboard->focus) {
struct wl_client *pointer_client =
wl_resource_get_client(pointer->focus->surface->resource);
send_modifiers_to_client_in_list(pointer_client,
&keyboard->resource_list,
serial,
keyboard);
}
}
static void
default_grab_keyboard_modifiers(struct weston_keyboard_grab *grab,
uint32_t serial, uint32_t mods_depressed,
uint32_t mods_latched,
uint32_t mods_locked, uint32_t group)
{
weston_keyboard_send_modifiers(grab->keyboard, serial, mods_depressed,
mods_latched, mods_locked, group);
}
static void
default_grab_keyboard_cancel(struct weston_keyboard_grab *grab)
{
}
static const struct weston_keyboard_grab_interface
default_keyboard_grab_interface = {
default_grab_keyboard_key,
default_grab_keyboard_modifiers,
default_grab_keyboard_cancel,
};
static void
pointer_unmap_sprite(struct weston_pointer *pointer)
{
struct weston_surface *surface = pointer->sprite->surface;
if (weston_surface_is_mapped(surface))
weston_surface_unmap(surface);
wl_list_remove(&pointer->sprite_destroy_listener.link);
surface->committed = NULL;
surface->committed_private = NULL;
weston_surface_set_label_func(surface, NULL);
weston_view_destroy(pointer->sprite);
pointer->sprite = NULL;
}
static void
pointer_handle_sprite_destroy(struct wl_listener *listener, void *data)
{
struct weston_pointer *pointer =
container_of(listener, struct weston_pointer,
sprite_destroy_listener);
pointer->sprite = NULL;
}
static void
weston_pointer_reset_state(struct weston_pointer *pointer)
{
pointer->button_count = 0;
}
static void
weston_pointer_handle_output_destroy(struct wl_listener *listener, void *data);
static struct weston_pointer *
weston_pointer_create(struct weston_seat *seat)
{
struct weston_pointer *pointer;
pointer = zalloc(sizeof *pointer);
if (pointer == NULL)
return NULL;
wl_list_init(&pointer->pointer_clients);
weston_pointer_set_default_grab(pointer,
seat->compositor->default_pointer_grab);
wl_list_init(&pointer->focus_resource_listener.link);
pointer->focus_resource_listener.notify = pointer_focus_resource_destroyed;
pointer->default_grab.pointer = pointer;
pointer->grab = &pointer->default_grab;
wl_signal_init(&pointer->motion_signal);
wl_signal_init(&pointer->focus_signal);
wl_list_init(&pointer->focus_view_listener.link);
wl_signal_init(&pointer->destroy_signal);
wl_list_init(&pointer->timestamps_list);
pointer->sprite_destroy_listener.notify = pointer_handle_sprite_destroy;
/* FIXME: Pick better co-ords. */
pointer->x = wl_fixed_from_int(100);
pointer->y = wl_fixed_from_int(100);
pointer->output_destroy_listener.notify =
weston_pointer_handle_output_destroy;
wl_signal_add(&seat->compositor->output_destroyed_signal,
&pointer->output_destroy_listener);
pointer->sx = wl_fixed_from_int(-1000000);
pointer->sy = wl_fixed_from_int(-1000000);
return pointer;
}
static void
weston_pointer_destroy(struct weston_pointer *pointer)
{
struct weston_pointer_client *pointer_client, *tmp;
wl_signal_emit(&pointer->destroy_signal, pointer);
if (pointer->sprite)
pointer_unmap_sprite(pointer);
wl_list_for_each_safe(pointer_client, tmp, &pointer->pointer_clients,
link) {
wl_list_remove(&pointer_client->link);
weston_pointer_client_destroy(pointer_client);
}
wl_list_remove(&pointer->focus_resource_listener.link);
wl_list_remove(&pointer->focus_view_listener.link);
wl_list_remove(&pointer->output_destroy_listener.link);
wl_list_remove(&pointer->timestamps_list);
free(pointer);
}
void
weston_pointer_set_default_grab(struct weston_pointer *pointer,
const struct weston_pointer_grab_interface *interface)
{
if (interface)
pointer->default_grab.interface = interface;
else
pointer->default_grab.interface =
&default_pointer_grab_interface;
}
static struct weston_keyboard *
weston_keyboard_create(void)
{
struct weston_keyboard *keyboard;
keyboard = zalloc(sizeof *keyboard);
if (keyboard == NULL)
return NULL;
wl_list_init(&keyboard->resource_list);
wl_list_init(&keyboard->focus_resource_list);
wl_list_init(&keyboard->focus_resource_listener.link);
keyboard->focus_resource_listener.notify = keyboard_focus_resource_destroyed;
wl_array_init(&keyboard->keys);
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_list_init(&keyboard->timestamps_list);
return keyboard;
}
static void
weston_xkb_info_destroy(struct weston_xkb_info *xkb_info);
static void
weston_keyboard_destroy(struct weston_keyboard *keyboard)
{
struct wl_resource *resource;
wl_resource_for_each(resource, &keyboard->resource_list) {
wl_resource_set_user_data(resource, NULL);
}
wl_resource_for_each(resource, &keyboard->focus_resource_list) {
wl_resource_set_user_data(resource, NULL);
}
wl_list_remove(&keyboard->resource_list);
wl_list_remove(&keyboard->focus_resource_list);
xkb_state_unref(keyboard->xkb_state.state);
if (keyboard->xkb_info)
weston_xkb_info_destroy(keyboard->xkb_info);
xkb_keymap_unref(keyboard->pending_keymap);
wl_array_release(&keyboard->keys);
wl_list_remove(&keyboard->focus_resource_listener.link);
wl_list_remove(&keyboard->timestamps_list);
free(keyboard);
}
static void
weston_touch_reset_state(struct weston_touch *touch)
{
touch->num_tp = 0;
}
static struct weston_touch *
weston_touch_create(void)
{
struct weston_touch *touch;
touch = zalloc(sizeof *touch);
if (touch == NULL)
return NULL;
wl_list_init(&touch->device_list);
wl_list_init(&touch->resource_list);
wl_list_init(&touch->focus_resource_list);
wl_list_init(&touch->focus_view_listener.link);
touch->focus_view_listener.notify = touch_focus_view_destroyed;
wl_list_init(&touch->focus_resource_listener.link);
touch->focus_resource_listener.notify = touch_focus_resource_destroyed;
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_list_init(&touch->timestamps_list);
return touch;
}
static void
weston_touch_destroy(struct weston_touch *touch)
{
struct wl_resource *resource;
assert(wl_list_empty(&touch->device_list));
wl_resource_for_each(resource, &touch->resource_list) {
wl_resource_set_user_data(resource, NULL);
}
wl_resource_for_each(resource, &touch->focus_resource_list) {
wl_resource_set_user_data(resource, NULL);
}
wl_list_remove(&touch->resource_list);
wl_list_remove(&touch->focus_resource_list);
wl_list_remove(&touch->focus_view_listener.link);
wl_list_remove(&touch->focus_resource_listener.link);
wl_list_remove(&touch->timestamps_list);
free(touch);
}
static void
seat_send_updated_caps(struct weston_seat *seat)
{
enum wl_seat_capability caps = 0;
struct wl_resource *resource;
if (seat->pointer_device_count > 0)
caps |= WL_SEAT_CAPABILITY_POINTER;
if (seat->keyboard_device_count > 0)
caps |= WL_SEAT_CAPABILITY_KEYBOARD;
if (seat->touch_device_count > 0)
caps |= WL_SEAT_CAPABILITY_TOUCH;
wl_resource_for_each(resource, &seat->base_resource_list) {
wl_seat_send_capabilities(resource, caps);
}
wl_signal_emit(&seat->updated_caps_signal, seat);
}
/** Clear the pointer focus
*
* \param pointer the pointer to clear focus for.
*
* This can be used to unset pointer focus and set the co-ordinates to the
* arbitrary values we use for the no focus case.
*
* There's no requirement to use this function. For example, passing the
* results of a weston_compositor_pick_view() directly to
* weston_pointer_set_focus() will do the right thing when no view is found.
*/
WL_EXPORT void
weston_pointer_clear_focus(struct weston_pointer *pointer)
{
weston_pointer_set_focus(pointer, NULL,
wl_fixed_from_int(-1000000),
wl_fixed_from_int(-1000000));
}
WL_EXPORT void
weston_pointer_set_focus(struct weston_pointer *pointer,
struct weston_view *view,
wl_fixed_t sx, wl_fixed_t sy)
{
struct weston_pointer_client *pointer_client;
struct weston_keyboard *kbd = weston_seat_get_keyboard(pointer->seat);
struct wl_resource *resource;
struct wl_resource *surface_resource;
struct wl_display *display = pointer->seat->compositor->wl_display;
uint32_t serial;
struct wl_list *focus_resource_list;
int refocus = 0;
if ((!pointer->focus && view) ||
(pointer->focus && !view) ||
(pointer->focus && pointer->focus->surface != view->surface) ||
pointer->sx != sx || pointer->sy != sy)
refocus = 1;
if (pointer->focus_client && refocus) {
focus_resource_list = &pointer->focus_client->pointer_resources;
if (!wl_list_empty(focus_resource_list)) {
serial = wl_display_next_serial(display);
surface_resource = pointer->focus->surface->resource;
wl_resource_for_each(resource, focus_resource_list) {
wl_pointer_send_leave(resource, serial,
surface_resource);
pointer_send_frame(resource);
}
}
pointer->focus_client = NULL;
}
pointer_client = find_pointer_client_for_view(pointer, view);
if (pointer_client && refocus) {
struct wl_client *surface_client = pointer_client->client;
serial = wl_display_next_serial(display);
if (kbd && kbd->focus != view->surface)
send_modifiers_to_client_in_list(surface_client,
&kbd->resource_list,
serial,
kbd);
pointer->focus_client = pointer_client;
focus_resource_list = &pointer->focus_client->pointer_resources;
wl_resource_for_each(resource, focus_resource_list) {
wl_pointer_send_enter(resource,
serial,
view->surface->resource,
sx, sy);
pointer_send_frame(resource);
}
pointer->focus_serial = serial;
}
wl_list_remove(&pointer->focus_view_listener.link);
wl_list_init(&pointer->focus_view_listener.link);
wl_list_remove(&pointer->focus_resource_listener.link);
wl_list_init(&pointer->focus_resource_listener.link);
if (view)
wl_signal_add(&view->destroy_signal, &pointer->focus_view_listener);
if (view && view->surface->resource)
wl_resource_add_destroy_listener(view->surface->resource,
&pointer->focus_resource_listener);
pointer->focus = view;
pointer->focus_view_listener.notify = pointer_focus_view_destroyed;
pointer->sx = sx;
pointer->sy = sy;
assert(view || sx == wl_fixed_from_int(-1000000));
assert(view || sy == wl_fixed_from_int(-1000000));
wl_signal_emit(&pointer->focus_signal, pointer);
}
static void
send_enter_to_resource_list(struct wl_list *list,
struct weston_keyboard *keyboard,
struct weston_surface *surface,
uint32_t serial)
{
struct wl_resource *resource;
wl_resource_for_each(resource, list) {
send_modifiers_to_resource(keyboard, resource, serial);
wl_keyboard_send_enter(resource, serial,
surface->resource,
&keyboard->keys);
}
}
WL_EXPORT void
weston_keyboard_set_focus(struct weston_keyboard *keyboard,
struct weston_surface *surface)
{
struct weston_seat *seat = keyboard->seat;
struct wl_resource *resource;
struct wl_display *display = keyboard->seat->compositor->wl_display;
uint32_t serial;
struct wl_list *focus_resource_list;
/* Keyboard focus on a surface without a client is equivalent to NULL
* focus as nothing would react to the keyboard events anyway.
* Just set focus to NULL instead - the destroy listener hangs on the
* wl_resource anyway.
*/
if (surface && !surface->resource)
surface = NULL;
focus_resource_list = &keyboard->focus_resource_list;
if (!wl_list_empty(focus_resource_list) && keyboard->focus != surface) {
serial = wl_display_next_serial(display);
wl_resource_for_each(resource, focus_resource_list) {
wl_keyboard_send_leave(resource, serial,
keyboard->focus->resource);
}
move_resources(&keyboard->resource_list, focus_resource_list);
}
if (find_resource_for_surface(&keyboard->resource_list, surface) &&
keyboard->focus != surface) {
struct wl_client *surface_client =
wl_resource_get_client(surface->resource);
serial = wl_display_next_serial(display);
move_resources_for_client(focus_resource_list,
&keyboard->resource_list,
surface_client);
send_enter_to_resource_list(focus_resource_list,
keyboard,
surface,
serial);
keyboard->focus_serial = serial;
}
if (seat->saved_kbd_focus) {
wl_list_remove(&seat->saved_kbd_focus_listener.link);
seat->saved_kbd_focus = NULL;
}
wl_list_remove(&keyboard->focus_resource_listener.link);
wl_list_init(&keyboard->focus_resource_listener.link);
if (surface)
wl_resource_add_destroy_listener(surface->resource,
&keyboard->focus_resource_listener);
keyboard->focus = surface;
wl_signal_emit(&keyboard->focus_signal, keyboard);
}
/* Users of this function must manually manage the keyboard focus */
WL_EXPORT void
weston_keyboard_start_grab(struct weston_keyboard *keyboard,
struct weston_keyboard_grab *grab)
{
keyboard->grab = grab;
grab->keyboard = keyboard;
}
WL_EXPORT void
weston_keyboard_end_grab(struct weston_keyboard *keyboard)
{
keyboard->grab = &keyboard->default_grab;
}
static void
weston_keyboard_cancel_grab(struct weston_keyboard *keyboard)
{
keyboard->grab->interface->cancel(keyboard->grab);
}
WL_EXPORT void
weston_pointer_start_grab(struct weston_pointer *pointer,
struct weston_pointer_grab *grab)
{
pointer->grab = grab;
grab->pointer = pointer;
pointer->grab->interface->focus(pointer->grab);
}
WL_EXPORT void
weston_pointer_end_grab(struct weston_pointer *pointer)
{
pointer->grab = &pointer->default_grab;
pointer->grab->interface->focus(pointer->grab);
}
static void
weston_pointer_cancel_grab(struct weston_pointer *pointer)
{
pointer->grab->interface->cancel(pointer->grab);
}
WL_EXPORT void
weston_touch_start_grab(struct weston_touch *touch, struct weston_touch_grab *grab)
{
touch->grab = grab;
grab->touch = touch;
}
WL_EXPORT void
weston_touch_end_grab(struct weston_touch *touch)
{
touch->grab = &touch->default_grab;
}
static void
weston_touch_cancel_grab(struct weston_touch *touch)
{
touch->grab->interface->cancel(touch->grab);
}
static void
weston_pointer_clamp_for_output(struct weston_pointer *pointer,
struct weston_output *output,
wl_fixed_t *fx, wl_fixed_t *fy)
{
int x, y;
x = wl_fixed_to_int(*fx);
y = wl_fixed_to_int(*fy);
if (x < output->x)
*fx = wl_fixed_from_int(output->x);
else if (x >= output->x + output->width)
*fx = wl_fixed_from_int(output->x +
output->width - 1);
if (y < output->y)
*fy = wl_fixed_from_int(output->y);
else if (y >= output->y + output->height)
*fy = wl_fixed_from_int(output->y +
output->height - 1);
}
WL_EXPORT void
weston_pointer_clamp(struct weston_pointer *pointer, wl_fixed_t *fx, wl_fixed_t *fy)
{
struct weston_compositor *ec = pointer->seat->compositor;
struct weston_output *output, *prev = NULL;
int x, y, old_x, old_y, valid = 0;
x = wl_fixed_to_int(*fx);
y = wl_fixed_to_int(*fy);
old_x = wl_fixed_to_int(pointer->x);
old_y = wl_fixed_to_int(pointer->y);
wl_list_for_each(output, &ec->output_list, link) {
if (pointer->seat->output && pointer->seat->output != output)
continue;
if (pixman_region32_contains_point(&output->region,
x, y, NULL))
valid = 1;
if (pixman_region32_contains_point(&output->region,
old_x, old_y, NULL))
prev = output;
}
if (!prev)
prev = pointer->seat->output;
if (prev && !valid)
weston_pointer_clamp_for_output(pointer, prev, fx, fy);
}
static void
weston_pointer_move_to(struct weston_pointer *pointer,
wl_fixed_t x, wl_fixed_t y)
{
int32_t ix, iy;
weston_pointer_clamp (pointer, &x, &y);
pointer->x = x;
pointer->y = y;
ix = wl_fixed_to_int(x);
iy = wl_fixed_to_int(y);
if (pointer->sprite) {
weston_view_set_position(pointer->sprite,
ix - pointer->hotspot_x,
iy - pointer->hotspot_y);
weston_view_schedule_repaint(pointer->sprite);
}
pointer->grab->interface->focus(pointer->grab);
wl_signal_emit(&pointer->motion_signal, pointer);
}
WL_EXPORT void
weston_pointer_move(struct weston_pointer *pointer,
struct weston_pointer_motion_event *event)
{
wl_fixed_t x, y;
weston_pointer_motion_to_abs(pointer, event, &x, &y);
weston_pointer_move_to(pointer, x, y);
}
/** Verify if the pointer is in a valid position and move it if it isn't.
*/
static void
weston_pointer_handle_output_destroy(struct wl_listener *listener, void *data)
{
struct weston_pointer *pointer;
struct weston_compositor *ec;
struct weston_output *output, *closest = NULL;
int x, y, distance, min = INT_MAX;
wl_fixed_t fx, fy;
pointer = container_of(listener, struct weston_pointer,
output_destroy_listener);
ec = pointer->seat->compositor;
x = wl_fixed_to_int(pointer->x);
y = wl_fixed_to_int(pointer->y);
wl_list_for_each(output, &ec->output_list, link) {
if (pixman_region32_contains_point(&output->region,
x, y, NULL))
return;
/* Aproximante the distance from the pointer to the center of
* the output. */
distance = abs(output->x + output->width / 2 - x) +
abs(output->y + output->height / 2 - y);
if (distance < min) {
min = distance;
closest = output;
}
}
/* Nothing to do if there's no output left. */
if (!closest)
return;
fx = pointer->x;
fy = pointer->y;
weston_pointer_clamp_for_output(pointer, closest, &fx, &fy);
weston_pointer_move_to(pointer, fx, fy);
}
WL_EXPORT void
notify_motion(struct weston_seat *seat,
const struct timespec *time,
struct weston_pointer_motion_event *event)
{
struct weston_compositor *ec = seat->compositor;
struct weston_pointer *pointer = weston_seat_get_pointer(seat);
weston_compositor_wake(ec);
pointer->grab->interface->motion(pointer->grab, time, event);
}
static void
run_modifier_bindings(struct weston_seat *seat, uint32_t old, uint32_t new)
{
struct weston_compositor *compositor = seat->compositor;
struct weston_keyboard *keyboard = weston_seat_get_keyboard(seat);
uint32_t diff;
unsigned int i;
struct {
uint32_t xkb;
enum weston_keyboard_modifier weston;
} mods[] = {
{ keyboard->xkb_info->ctrl_mod, MODIFIER_CTRL },
{ keyboard->xkb_info->alt_mod, MODIFIER_ALT },
{ keyboard->xkb_info->super_mod, MODIFIER_SUPER },
{ keyboard->xkb_info->shift_mod, MODIFIER_SHIFT },
};
diff = new & ~old;
for (i = 0; i < ARRAY_LENGTH(mods); i++) {
if (diff & (1 << mods[i].xkb))
weston_compositor_run_modifier_binding(compositor,
keyboard,
mods[i].weston,
WL_KEYBOARD_KEY_STATE_PRESSED);
}
diff = old & ~new;
for (i = 0; i < ARRAY_LENGTH(mods); i++) {
if (diff & (1 << mods[i].xkb))
weston_compositor_run_modifier_binding(compositor,
keyboard,
mods[i].weston,
WL_KEYBOARD_KEY_STATE_RELEASED);
}
}
WL_EXPORT void
notify_motion_absolute(struct weston_seat *seat, const struct timespec *time,
double x, double y)
{
struct weston_compositor *ec = seat->compositor;
struct weston_pointer *pointer = weston_seat_get_pointer(seat);
struct weston_pointer_motion_event event = { 0 };
weston_compositor_wake(ec);
event = (struct weston_pointer_motion_event) {
.mask = WESTON_POINTER_MOTION_ABS,
.x = x,
.y = y,
};
pointer->grab->interface->motion(pointer->grab, time, &event);
}
static unsigned int
peek_next_activate_serial(struct weston_compositor *c)
{
unsigned serial = c->activate_serial + 1;
return serial == 0 ? 1 : serial;
}
static void
inc_activate_serial(struct weston_compositor *c)
{
c->activate_serial = peek_next_activate_serial (c);
}
WL_EXPORT void
weston_view_activate(struct weston_view *view,
struct weston_seat *seat,
uint32_t flags)
{
struct weston_compositor *compositor = seat->compositor;
if (flags & WESTON_ACTIVATE_FLAG_CLICKED) {
view->click_to_activate_serial =
peek_next_activate_serial(compositor);
}
weston_seat_set_keyboard_focus(seat, view->surface);
}
WL_EXPORT void
notify_button(struct weston_seat *seat, const struct timespec *time,
int32_t button, enum wl_pointer_button_state state)
{
struct weston_compositor *compositor = seat->compositor;
struct weston_pointer *pointer = weston_seat_get_pointer(seat);
if (state == WL_POINTER_BUTTON_STATE_PRESSED) {
weston_compositor_idle_inhibit(compositor);
if (pointer->button_count == 0) {
pointer->grab_button = button;
pointer->grab_time = *time;
pointer->grab_x = pointer->x;
pointer->grab_y = pointer->y;
}
pointer->button_count++;
} else {
weston_compositor_idle_release(compositor);
pointer->button_count--;
}
weston_compositor_run_button_binding(compositor, pointer, time, button,
state);
pointer->grab->interface->button(pointer->grab, time, button, state);
if (pointer->button_count == 1)
pointer->grab_serial =
wl_display_get_serial(compositor->wl_display);
}
WL_EXPORT void
notify_axis(struct weston_seat *seat, const struct timespec *time,
struct weston_pointer_axis_event *event)
{
struct weston_compositor *compositor = seat->compositor;
struct weston_pointer *pointer = weston_seat_get_pointer(seat);
weston_compositor_wake(compositor);
if (weston_compositor_run_axis_binding(compositor, pointer,
time, event))
return;
pointer->grab->interface->axis(pointer->grab, time, event);
}
WL_EXPORT void
notify_axis_source(struct weston_seat *seat, uint32_t source)
{
struct weston_compositor *compositor = seat->compositor;
struct weston_pointer *pointer = weston_seat_get_pointer(seat);
weston_compositor_wake(compositor);
pointer->grab->interface->axis_source(pointer->grab, source);
}
WL_EXPORT void
notify_pointer_frame(struct weston_seat *seat)
{
struct weston_compositor *compositor = seat->compositor;
struct weston_pointer *pointer = weston_seat_get_pointer(seat);
weston_compositor_wake(compositor);
pointer->grab->interface->frame(pointer->grab);
}
WL_EXPORT int
weston_keyboard_set_locks(struct weston_keyboard *keyboard,
uint32_t mask, uint32_t value)
{
uint32_t serial;
xkb_mod_mask_t mods_depressed, mods_latched, mods_locked, group;
xkb_mod_mask_t num, caps;
/* We don't want the leds to go out of sync with the actual state
* so if the backend has no way to change the leds don't try to
* change the state */
if (!keyboard->seat->led_update)
return -1;
mods_depressed = xkb_state_serialize_mods(keyboard->xkb_state.state,
XKB_STATE_DEPRESSED);
mods_latched = xkb_state_serialize_mods(keyboard->xkb_state.state,
XKB_STATE_LATCHED);
mods_locked = xkb_state_serialize_mods(keyboard->xkb_state.state,
XKB_STATE_LOCKED);
group = xkb_state_serialize_group(keyboard->xkb_state.state,
XKB_STATE_EFFECTIVE);
num = (1 << keyboard->xkb_info->mod2_mod);
caps = (1 << keyboard->xkb_info->caps_mod);
if (mask & WESTON_NUM_LOCK) {
if (value & WESTON_NUM_LOCK)
mods_locked |= num;
else
mods_locked &= ~num;
}
if (mask & WESTON_CAPS_LOCK) {
if (value & WESTON_CAPS_LOCK)
mods_locked |= caps;
else
mods_locked &= ~caps;
}
xkb_state_update_mask(keyboard->xkb_state.state, mods_depressed,
mods_latched, mods_locked, 0, 0, group);
serial = wl_display_next_serial(
keyboard->seat->compositor->wl_display);
notify_modifiers(keyboard->seat, serial);
return 0;
}
WL_EXPORT void
notify_modifiers(struct weston_seat *seat, uint32_t serial)
{
struct weston_keyboard *keyboard = weston_seat_get_keyboard(seat);
struct weston_keyboard_grab *grab = keyboard->grab;
uint32_t mods_depressed, mods_latched, mods_locked, group;
uint32_t mods_lookup;
enum weston_led leds = 0;
int changed = 0;
/* Serialize and update our internal state, checking to see if it's
* different to the previous state. */
mods_depressed = xkb_state_serialize_mods(keyboard->xkb_state.state,
XKB_STATE_MODS_DEPRESSED);
mods_latched = xkb_state_serialize_mods(keyboard->xkb_state.state,
XKB_STATE_MODS_LATCHED);
mods_locked = xkb_state_serialize_mods(keyboard->xkb_state.state,
XKB_STATE_MODS_LOCKED);
group = xkb_state_serialize_layout(keyboard->xkb_state.state,
XKB_STATE_LAYOUT_EFFECTIVE);
if (mods_depressed != keyboard->modifiers.mods_depressed ||
mods_latched != keyboard->modifiers.mods_latched ||
mods_locked != keyboard->modifiers.mods_locked ||
group != keyboard->modifiers.group)
changed = 1;
run_modifier_bindings(seat, keyboard->modifiers.mods_depressed,
mods_depressed);
keyboard->modifiers.mods_depressed = mods_depressed;
keyboard->modifiers.mods_latched = mods_latched;
keyboard->modifiers.mods_locked = mods_locked;
keyboard->modifiers.group = group;
/* And update the modifier_state for bindings. */
mods_lookup = mods_depressed | mods_latched;
seat->modifier_state = 0;
if (mods_lookup & (1 << keyboard->xkb_info->ctrl_mod))
seat->modifier_state |= MODIFIER_CTRL;
if (mods_lookup & (1 << keyboard->xkb_info->alt_mod))
seat->modifier_state |= MODIFIER_ALT;
if (mods_lookup & (1 << keyboard->xkb_info->super_mod))
seat->modifier_state |= MODIFIER_SUPER;
if (mods_lookup & (1 << keyboard->xkb_info->shift_mod))
seat->modifier_state |= MODIFIER_SHIFT;
/* Finally, notify the compositor that LEDs have changed. */
if (xkb_state_led_index_is_active(keyboard->xkb_state.state,
keyboard->xkb_info->num_led))
leds |= LED_NUM_LOCK;
if (xkb_state_led_index_is_active(keyboard->xkb_state.state,
keyboard->xkb_info->caps_led))
leds |= LED_CAPS_LOCK;
if (xkb_state_led_index_is_active(keyboard->xkb_state.state,
keyboard->xkb_info->scroll_led))
leds |= LED_SCROLL_LOCK;
if (leds != keyboard->xkb_state.leds && seat->led_update)
seat->led_update(seat, leds);
keyboard->xkb_state.leds = leds;
if (changed) {
grab->interface->modifiers(grab,
serial,
keyboard->modifiers.mods_depressed,
keyboard->modifiers.mods_latched,
keyboard->modifiers.mods_locked,
keyboard->modifiers.group);
}
}
static void
update_modifier_state(struct weston_seat *seat, uint32_t serial, uint32_t key,
enum wl_keyboard_key_state state)
{
struct weston_keyboard *keyboard = weston_seat_get_keyboard(seat);
enum xkb_key_direction direction;
if (state == WL_KEYBOARD_KEY_STATE_PRESSED)
direction = XKB_KEY_DOWN;
else
direction = XKB_KEY_UP;
/* Offset the keycode by 8, as the evdev XKB rules reflect X's
* broken keycode system, which starts at 8. */
xkb_state_update_key(keyboard->xkb_state.state, key + 8, direction);
notify_modifiers(seat, serial);
}
WL_EXPORT void
weston_keyboard_send_keymap(struct weston_keyboard *kbd, struct wl_resource *resource)
{
struct weston_xkb_info *xkb_info = kbd->xkb_info;
void *area;
int fd;
fd = os_create_anonymous_file(xkb_info->keymap_size);
if (fd < 0) {
weston_log("creating a keymap file for %lu bytes failed: %s\n",
(unsigned long) xkb_info->keymap_size,
strerror(errno));
return;
}
area = mmap(NULL, xkb_info->keymap_size, PROT_READ | PROT_WRITE,
MAP_SHARED, fd, 0);
if (area == MAP_FAILED) {
weston_log("failed to mmap() %lu bytes\n",
(unsigned long) xkb_info->keymap_size);
goto err_mmap;
}
strcpy(area, xkb_info->keymap_string);
munmap(area, xkb_info->keymap_size);
wl_keyboard_send_keymap(resource,
WL_KEYBOARD_KEYMAP_FORMAT_XKB_V1,
fd,
xkb_info->keymap_size);
err_mmap:
close(fd);
}
static void
send_modifiers(struct wl_resource *resource, uint32_t serial, struct weston_keyboard *keyboard)
{
wl_keyboard_send_modifiers(resource, serial,
keyboard->modifiers.mods_depressed,
keyboard->modifiers.mods_latched,
keyboard->modifiers.mods_locked,
keyboard->modifiers.group);
}
static struct weston_xkb_info *
weston_xkb_info_create(struct xkb_keymap *keymap);
static void
update_keymap(struct weston_seat *seat)
{
struct weston_keyboard *keyboard = weston_seat_get_keyboard(seat);
struct wl_resource *resource;
struct weston_xkb_info *xkb_info;
struct xkb_state *state;
xkb_mod_mask_t latched_mods;
xkb_mod_mask_t locked_mods;
xkb_info = weston_xkb_info_create(keyboard->pending_keymap);
xkb_keymap_unref(keyboard->pending_keymap);
keyboard->pending_keymap = NULL;
if (!xkb_info) {
weston_log("failed to create XKB info\n");
return;
}
state = xkb_state_new(xkb_info->keymap);
if (!state) {
weston_log("failed to initialise XKB state\n");
weston_xkb_info_destroy(xkb_info);
return;
}
latched_mods = xkb_state_serialize_mods(keyboard->xkb_state.state,
XKB_STATE_MODS_LATCHED);
locked_mods = xkb_state_serialize_mods(keyboard->xkb_state.state,
XKB_STATE_MODS_LOCKED);
xkb_state_update_mask(state,
0, /* depressed */
latched_mods,
locked_mods,
0, 0, 0);
weston_xkb_info_destroy(keyboard->xkb_info);
keyboard->xkb_info = xkb_info;
xkb_state_unref(keyboard->xkb_state.state);
keyboard->xkb_state.state = state;
wl_resource_for_each(resource, &keyboard->resource_list)
weston_keyboard_send_keymap(keyboard, resource);
wl_resource_for_each(resource, &keyboard->focus_resource_list)
weston_keyboard_send_keymap(keyboard, resource);
notify_modifiers(seat, wl_display_next_serial(seat->compositor->wl_display));
if (!latched_mods && !locked_mods)
return;
wl_resource_for_each(resource, &keyboard->resource_list)
send_modifiers(resource, wl_display_get_serial(seat->compositor->wl_display), keyboard);
wl_resource_for_each(resource, &keyboard->focus_resource_list)
send_modifiers(resource, wl_display_get_serial(seat->compositor->wl_display), keyboard);
}
WL_EXPORT void
notify_key(struct weston_seat *seat, const struct timespec *time, uint32_t key,
enum wl_keyboard_key_state state,
enum weston_key_state_update update_state)
{
struct weston_compositor *compositor = seat->compositor;
struct weston_keyboard *keyboard = weston_seat_get_keyboard(seat);
struct weston_keyboard_grab *grab = keyboard->grab;
uint32_t *k, *end;
if (state == WL_KEYBOARD_KEY_STATE_PRESSED) {
weston_compositor_idle_inhibit(compositor);
} else {
weston_compositor_idle_release(compositor);
}
end = keyboard->keys.data + keyboard->keys.size;
for (k = keyboard->keys.data; k < end; k++) {
if (*k == key) {
/* Ignore server-generated repeats. */
if (state == WL_KEYBOARD_KEY_STATE_PRESSED)
return;
*k = *--end;
}
}
keyboard->keys.size = (void *) end - keyboard->keys.data;
if (state == WL_KEYBOARD_KEY_STATE_PRESSED) {
k = wl_array_add(&keyboard->keys, sizeof *k);
*k = key;
}
if (grab == &keyboard->default_grab ||
grab == &keyboard->input_method_grab) {
weston_compositor_run_key_binding(compositor, keyboard, time,
key, state);
grab = keyboard->grab;
}
grab->interface->key(grab, time, key, state);
if (keyboard->pending_keymap &&
keyboard->keys.size == 0)
update_keymap(seat);
if (update_state == STATE_UPDATE_AUTOMATIC) {
update_modifier_state(seat,
wl_display_get_serial(compositor->wl_display),
key,
state);
}
keyboard->grab_serial = wl_display_get_serial(compositor->wl_display);
if (state == WL_KEYBOARD_KEY_STATE_PRESSED) {
keyboard->grab_time = *time;
keyboard->grab_key = key;
}
}
WL_EXPORT void
notify_pointer_focus(struct weston_seat *seat, struct weston_output *output,
double x, double y)
{
struct weston_pointer *pointer = weston_seat_get_pointer(seat);
if (output) {
weston_pointer_move_to(pointer,
wl_fixed_from_double(x),
wl_fixed_from_double(y));
} else {
/* FIXME: We should call weston_pointer_set_focus(seat,
* NULL) here, but somehow that breaks re-entry... */
}
}
static void
destroy_device_saved_kbd_focus(struct wl_listener *listener, void *data)
{
struct weston_seat *ws;
ws = container_of(listener, struct weston_seat,
saved_kbd_focus_listener);
ws->saved_kbd_focus = NULL;
}
WL_EXPORT void
notify_keyboard_focus_in(struct weston_seat *seat, struct wl_array *keys,
enum weston_key_state_update update_state)
{
struct weston_compositor *compositor = seat->compositor;
struct weston_keyboard *keyboard = weston_seat_get_keyboard(seat);
struct weston_surface *surface;
uint32_t *k, serial;
serial = wl_display_next_serial(compositor->wl_display);
wl_array_copy(&keyboard->keys, keys);
wl_array_for_each(k, &keyboard->keys) {
weston_compositor_idle_inhibit(compositor);
if (update_state == STATE_UPDATE_AUTOMATIC)
update_modifier_state(seat, serial, *k,
WL_KEYBOARD_KEY_STATE_PRESSED);
}
surface = seat->saved_kbd_focus;
if (surface) {
weston_keyboard_set_focus(keyboard, surface);
}
}
WL_EXPORT void
notify_keyboard_focus_out(struct weston_seat *seat)
{
struct weston_compositor *compositor = seat->compositor;
struct weston_keyboard *keyboard = weston_seat_get_keyboard(seat);
struct weston_pointer *pointer = weston_seat_get_pointer(seat);
struct weston_surface *focus = keyboard->focus;
uint32_t *k, serial;
serial = wl_display_next_serial(compositor->wl_display);
wl_array_for_each(k, &keyboard->keys) {
weston_compositor_idle_release(compositor);
update_modifier_state(seat, serial, *k,
WL_KEYBOARD_KEY_STATE_RELEASED);
}
seat->modifier_state = 0;
weston_keyboard_set_focus(keyboard, NULL);
weston_keyboard_cancel_grab(keyboard);
if (pointer)
weston_pointer_cancel_grab(pointer);
if (focus) {
seat->saved_kbd_focus = focus;
seat->saved_kbd_focus_listener.notify =
destroy_device_saved_kbd_focus;
wl_signal_add(&focus->destroy_signal,
&seat->saved_kbd_focus_listener);
}
}
WL_EXPORT void
weston_touch_set_focus(struct weston_touch *touch, struct weston_view *view)
{
struct wl_list *focus_resource_list;
focus_resource_list = &touch->focus_resource_list;
if (view && touch->focus &&
touch->focus->surface == view->surface) {
touch->focus = view;
return;
}
wl_list_remove(&touch->focus_resource_listener.link);
wl_list_init(&touch->focus_resource_listener.link);
wl_list_remove(&touch->focus_view_listener.link);
wl_list_init(&touch->focus_view_listener.link);
if (!wl_list_empty(focus_resource_list)) {
move_resources(&touch->resource_list,
focus_resource_list);
}
if (view) {
struct wl_client *surface_client;
if (!view->surface->resource) {
touch->focus = NULL;
return;
}
surface_client = wl_resource_get_client(view->surface->resource);
move_resources_for_client(focus_resource_list,
&touch->resource_list,
surface_client);
wl_resource_add_destroy_listener(view->surface->resource,
&touch->focus_resource_listener);
wl_signal_add(&view->destroy_signal, &touch->focus_view_listener);
}
touch->focus = view;
}
static void
process_touch_normal(struct weston_touch_device *device,
const struct timespec *time, int touch_id,
double double_x, double double_y, int touch_type)
{
struct weston_touch *touch = device->aggregate;
struct weston_touch_grab *grab = device->aggregate->grab;
struct weston_compositor *ec = device->aggregate->seat->compositor;
struct weston_view *ev;
wl_fixed_t sx, sy;
wl_fixed_t x = wl_fixed_from_double(double_x);
wl_fixed_t y = wl_fixed_from_double(double_y);
/* Update grab's global coordinates. */
if (touch_id == touch->grab_touch_id && touch_type != WL_TOUCH_UP) {
touch->grab_x = x;
touch->grab_y = y;
}
switch (touch_type) {
case WL_TOUCH_DOWN:
/* the first finger down picks the view, and all further go
* to that view for the remainder of the touch session i.e.
* until all touch points are up again. */
if (touch->num_tp == 1) {
ev = weston_compositor_pick_view(ec, x, y, &sx, &sy);
weston_touch_set_focus(touch, ev);
} else if (!touch->focus) {
/* Unexpected condition: We have non-initial touch but
* there is no focused surface.
*/
weston_log("touch event received with %d points down "
"but no surface focused\n", touch->num_tp);
return;
}
weston_compositor_run_touch_binding(ec, touch,
time, touch_type);
grab->interface->down(grab, time, touch_id, x, y);
if (touch->num_tp == 1) {
touch->grab_serial =
wl_display_get_serial(ec->wl_display);
touch->grab_touch_id = touch_id;
touch->grab_time = *time;
touch->grab_x = x;
touch->grab_y = y;
}
break;
case WL_TOUCH_MOTION:
ev = touch->focus;
if (!ev)
break;
grab->interface->motion(grab, time, touch_id, x, y);
break;
case WL_TOUCH_UP:
grab->interface->up(grab, time, touch_id);
if (touch->num_tp == 0)
weston_touch_set_focus(touch, NULL);
break;
}
}
static enum weston_touch_mode
get_next_touch_mode(enum weston_touch_mode from)
{
switch (from) {
case WESTON_TOUCH_MODE_PREP_NORMAL:
return WESTON_TOUCH_MODE_NORMAL;
case WESTON_TOUCH_MODE_PREP_CALIB:
return WESTON_TOUCH_MODE_CALIB;
case WESTON_TOUCH_MODE_NORMAL:
case WESTON_TOUCH_MODE_CALIB:
return from;
}
return WESTON_TOUCH_MODE_NORMAL;
}
/** Global touch mode update
*
* If no seat has a touch down and the compositor is in a PREP touch mode,
* set the compositor to the goal touch mode.
*
* Calls calibrator if touch mode changed.
*/
static void
weston_compositor_update_touch_mode(struct weston_compositor *compositor)
{
struct weston_seat *seat;
struct weston_touch *touch;
enum weston_touch_mode goal;
wl_list_for_each(seat, &compositor->seat_list, link) {
touch = weston_seat_get_touch(seat);
if (!touch)
continue;
if (touch->num_tp > 0)
return;
}
goal = get_next_touch_mode(compositor->touch_mode);
if (compositor->touch_mode != goal) {
compositor->touch_mode = goal;
touch_calibrator_mode_changed(compositor);
}
}
/** Start transition to normal touch event handling
*
* The touch event mode changes when all touches on all touch devices have
* been lifted. If no touches are currently down, the transition is immediate.
*
* \sa weston_touch_mode
*/
void
weston_compositor_set_touch_mode_normal(struct weston_compositor *compositor)
{
switch (compositor->touch_mode) {
case WESTON_TOUCH_MODE_PREP_NORMAL:
case WESTON_TOUCH_MODE_NORMAL:
return;
case WESTON_TOUCH_MODE_PREP_CALIB:
compositor->touch_mode = WESTON_TOUCH_MODE_NORMAL;
touch_calibrator_mode_changed(compositor);
return;
case WESTON_TOUCH_MODE_CALIB:
compositor->touch_mode = WESTON_TOUCH_MODE_PREP_NORMAL;
}
weston_compositor_update_touch_mode(compositor);
}
/** Start transition to calibrator touch event handling
*
* The touch event mode changes when all touches on all touch devices have
* been lifted. If no touches are currently down, the transition is immediate.
*
* \sa weston_touch_mode
*/
void
weston_compositor_set_touch_mode_calib(struct weston_compositor *compositor)
{
switch (compositor->touch_mode) {
case WESTON_TOUCH_MODE_PREP_CALIB:
case WESTON_TOUCH_MODE_CALIB:
assert(0);
return;
case WESTON_TOUCH_MODE_PREP_NORMAL:
compositor->touch_mode = WESTON_TOUCH_MODE_CALIB;
touch_calibrator_mode_changed(compositor);
return;
case WESTON_TOUCH_MODE_NORMAL:
compositor->touch_mode = WESTON_TOUCH_MODE_PREP_CALIB;
}
weston_compositor_update_touch_mode(compositor);
}
/** Feed in touch down, motion, and up events, calibratable device.
*
* It assumes always the correct cycle sequence until it gets here: touch_down
* → touch_update → ... → touch_update → touch_end. The driver is responsible
* for sending along such order.
*
* \param device The physical device that generated the event.
* \param time The event timestamp.
* \param touch_id ID for the touch point of this event (multi-touch).
* \param x X coordinate in compositor global space.
* \param y Y coordinate in compositor global space.
* \param norm Normalized device X, Y coordinates in calibration space, or NULL.
* \param touch_type Either WL_TOUCH_DOWN, WL_TOUCH_UP, or WL_TOUCH_MOTION.
*
* Coordinates double_x and double_y are used for normal operation.
*
* Coordinates norm are only used for touch device calibration. If and only if
* the weston_touch_device does not support calibrating, norm must be NULL.
*
* The calibration space is the normalized coordinate space
* [0.0, 1.0]×[0.0, 1.0] of the weston_touch_device. This is assumed to
* map to the similar normalized coordinate space of the associated
* weston_output.
*/
WL_EXPORT void
notify_touch_normalized(struct weston_touch_device *device,
const struct timespec *time,
int touch_id,
double x, double y,
const struct weston_point2d_device_normalized *norm,
int touch_type)
{
struct weston_seat *seat = device->aggregate->seat;
struct weston_touch *touch = device->aggregate;
if (touch_type != WL_TOUCH_UP) {
if (weston_touch_device_can_calibrate(device))
assert(norm != NULL);
else
assert(norm == NULL);
}
/* Update touchpoints count regardless of the current mode. */
switch (touch_type) {
case WL_TOUCH_DOWN:
weston_compositor_idle_inhibit(seat->compositor);
touch->num_tp++;
break;
case WL_TOUCH_UP:
if (touch->num_tp == 0) {
/* This can happen if we start out with one or
* more fingers on the touch screen, in which
* case we didn't get the corresponding down
* event. */
weston_log("Unmatched touch up event on seat %s, device %s\n",
seat->seat_name, device->syspath);
return;
}
weston_compositor_idle_release(seat->compositor);
touch->num_tp--;
break;
default:
break;
}
/* Properly forward the touch event */
switch (weston_touch_device_get_mode(device)) {
case WESTON_TOUCH_MODE_NORMAL:
case WESTON_TOUCH_MODE_PREP_CALIB:
process_touch_normal(device, time, touch_id, x, y, touch_type);
break;
case WESTON_TOUCH_MODE_CALIB:
case WESTON_TOUCH_MODE_PREP_NORMAL:
notify_touch_calibrator(device, time, touch_id,
norm, touch_type);
break;
}
}
WL_EXPORT void
notify_touch_frame(struct weston_touch_device *device)
{
struct weston_touch_grab *grab;
switch (weston_touch_device_get_mode(device)) {
case WESTON_TOUCH_MODE_NORMAL:
case WESTON_TOUCH_MODE_PREP_CALIB:
grab = device->aggregate->grab;
grab->interface->frame(grab);
break;
case WESTON_TOUCH_MODE_CALIB:
case WESTON_TOUCH_MODE_PREP_NORMAL:
notify_touch_calibrator_frame(device);
break;
}
weston_compositor_update_touch_mode(device->aggregate->seat->compositor);
}
WL_EXPORT void
notify_touch_cancel(struct weston_touch_device *device)
{
struct weston_touch_grab *grab;
switch (weston_touch_device_get_mode(device)) {
case WESTON_TOUCH_MODE_NORMAL:
case WESTON_TOUCH_MODE_PREP_CALIB:
grab = device->aggregate->grab;
grab->interface->cancel(grab);
break;
case WESTON_TOUCH_MODE_CALIB:
case WESTON_TOUCH_MODE_PREP_NORMAL:
notify_touch_calibrator_cancel(device);
break;
}
weston_compositor_update_touch_mode(device->aggregate->seat->compositor);
}
static int
pointer_cursor_surface_get_label(struct weston_surface *surface,
char *buf, size_t len)
{
return snprintf(buf, len, "cursor");
}
static void
pointer_cursor_surface_committed(struct weston_surface *es,
int32_t dx, int32_t dy)
{
struct weston_pointer *pointer = es->committed_private;
int x, y;
if (es->width == 0)
return;
assert(es == pointer->sprite->surface);
pointer->hotspot_x -= dx;
pointer->hotspot_y -= dy;
x = wl_fixed_to_int(pointer->x) - pointer->hotspot_x;
y = wl_fixed_to_int(pointer->y) - pointer->hotspot_y;
weston_view_set_position(pointer->sprite, x, y);
empty_region(&es->pending.input);
empty_region(&es->input);
if (!weston_surface_is_mapped(es)) {
weston_layer_entry_insert(&es->compositor->cursor_layer.view_list,
&pointer->sprite->layer_link);
weston_view_update_transform(pointer->sprite);
es->is_mapped = true;
pointer->sprite->is_mapped = true;
}
}
static void
pointer_set_cursor(struct wl_client *client, struct wl_resource *resource,
uint32_t serial, struct wl_resource *surface_resource,
int32_t x, int32_t y)
{
struct weston_pointer *pointer = wl_resource_get_user_data(resource);
struct weston_surface *surface = NULL;
if (!pointer)
return;
if (surface_resource)
surface = wl_resource_get_user_data(surface_resource);
if (pointer->focus == NULL)
return;
/* pointer->focus->surface->resource can be NULL. Surfaces like the
black_surface used in shell.c for fullscreen don't have
a resource, but can still have focus */
if (pointer->focus->surface->resource == NULL)
return;
if (wl_resource_get_client(pointer->focus->surface->resource) != client)
return;
if (pointer->focus_serial - serial > UINT32_MAX / 2)
return;
if (!surface) {
if (pointer->sprite)
pointer_unmap_sprite(pointer);
return;
}
if (pointer->sprite && pointer->sprite->surface == surface &&
pointer->hotspot_x == x && pointer->hotspot_y == y)
return;
if (!pointer->sprite || pointer->sprite->surface != surface) {
if (weston_surface_set_role(surface, "wl_pointer-cursor",
resource,
WL_POINTER_ERROR_ROLE) < 0)
return;
if (pointer->sprite)
pointer_unmap_sprite(pointer);
wl_signal_add(&surface->destroy_signal,
&pointer->sprite_destroy_listener);
surface->committed = pointer_cursor_surface_committed;
surface->committed_private = pointer;
weston_surface_set_label_func(surface,
pointer_cursor_surface_get_label);
pointer->sprite = weston_view_create(surface);
}
pointer->hotspot_x = x;
pointer->hotspot_y = y;
if (surface->buffer_ref.buffer) {
pointer_cursor_surface_committed(surface, 0, 0);
weston_view_schedule_repaint(pointer->sprite);
}
}
static void
pointer_release(struct wl_client *client, struct wl_resource *resource)
{
wl_resource_destroy(resource);
}
static const struct wl_pointer_interface pointer_interface = {
pointer_set_cursor,
pointer_release
};
static void
seat_get_pointer(struct wl_client *client, struct wl_resource *resource,
uint32_t id)
{
struct weston_seat *seat = wl_resource_get_user_data(resource);
/* We use the pointer_state directly, which means we'll
* give a wl_pointer if the seat has ever had one - even though
* the spec explicitly states that this request only takes effect
* if the seat has the pointer capability.
*
* This prevents a race between the compositor sending new
* capabilities and the client trying to use the old ones.
*/
struct weston_pointer *pointer = seat ? seat->pointer_state : NULL;
struct wl_resource *cr;
struct weston_pointer_client *pointer_client;
cr = wl_resource_create(client, &wl_pointer_interface,
wl_resource_get_version(resource), id);
if (cr == NULL) {
wl_client_post_no_memory(client);
return;
}
wl_list_init(wl_resource_get_link(cr));
wl_resource_set_implementation(cr, &pointer_interface, pointer,
unbind_pointer_client_resource);
/* If we don't have a pointer_state, the resource is inert, so there
* is nothing more to set up */
if (!pointer)
return;
pointer_client = weston_pointer_ensure_pointer_client(pointer, client);
if (!pointer_client) {
wl_client_post_no_memory(client);
return;
}
wl_list_insert(&pointer_client->pointer_resources,
wl_resource_get_link(cr));
if (pointer->focus && pointer->focus->surface->resource &&
wl_resource_get_client(pointer->focus->surface->resource) == client) {
wl_fixed_t sx, sy;
weston_view_from_global_fixed(pointer->focus,
pointer->x,
pointer->y,
&sx, &sy);
wl_pointer_send_enter(cr,
pointer->focus_serial,
pointer->focus->surface->resource,
sx, sy);
pointer_send_frame(cr);
}
}
static void
destroy_keyboard_resource(struct wl_resource *resource)
{
struct weston_keyboard *keyboard = wl_resource_get_user_data(resource);
wl_list_remove(wl_resource_get_link(resource));
if (keyboard) {
remove_input_resource_from_timestamps(resource,
&keyboard->timestamps_list);
}
}
static void
keyboard_release(struct wl_client *client, struct wl_resource *resource)
{
wl_resource_destroy(resource);
}
static const struct wl_keyboard_interface keyboard_interface = {
keyboard_release
};
static bool
should_send_modifiers_to_client(struct weston_seat *seat,
struct wl_client *client)
{
struct weston_keyboard *keyboard = weston_seat_get_keyboard(seat);
struct weston_pointer *pointer = weston_seat_get_pointer(seat);
if (keyboard &&
keyboard->focus &&
keyboard->focus->resource &&
wl_resource_get_client(keyboard->focus->resource) == client)
return true;
if (pointer &&
pointer->focus &&
pointer->focus->surface->resource &&
wl_resource_get_client(pointer->focus->surface->resource) == client)
return true;
return false;
}
static void
seat_get_keyboard(struct wl_client *client, struct wl_resource *resource,
uint32_t id)
{
struct weston_seat *seat = wl_resource_get_user_data(resource);
/* We use the keyboard_state directly, which means we'll
* give a wl_keyboard if the seat has ever had one - even though
* the spec explicitly states that this request only takes effect
* if the seat has the keyboard capability.
*
* This prevents a race between the compositor sending new
* capabilities and the client trying to use the old ones.
*/
struct weston_keyboard *keyboard = seat ? seat->keyboard_state : NULL;
struct wl_resource *cr;
cr = wl_resource_create(client, &wl_keyboard_interface,
wl_resource_get_version(resource), id);
if (cr == NULL) {
wl_client_post_no_memory(client);
return;
}
wl_list_init(wl_resource_get_link(cr));
wl_resource_set_implementation(cr, &keyboard_interface,
keyboard, destroy_keyboard_resource);
/* If we don't have a keyboard_state, the resource is inert, so there
* is nothing more to set up */
if (!keyboard)
return;
/* May be moved to focused list later by either
* weston_keyboard_set_focus or directly if this client is already
* focused */
wl_list_insert(&keyboard->resource_list, wl_resource_get_link(cr));
if (wl_resource_get_version(cr) >= WL_KEYBOARD_REPEAT_INFO_SINCE_VERSION) {
wl_keyboard_send_repeat_info(cr,
seat->compositor->kb_repeat_rate,
seat->compositor->kb_repeat_delay);
}
weston_keyboard_send_keymap(keyboard, cr);
if (should_send_modifiers_to_client(seat, client)) {
send_modifiers_to_resource(keyboard,
cr,
keyboard->focus_serial);
}
if (keyboard->focus && keyboard->focus->resource &&
wl_resource_get_client(keyboard->focus->resource) == client) {
struct weston_surface *surface =
(struct weston_surface *)keyboard->focus;
wl_list_remove(wl_resource_get_link(cr));
wl_list_insert(&keyboard->focus_resource_list,
wl_resource_get_link(cr));
wl_keyboard_send_enter(cr,
keyboard->focus_serial,
surface->resource,
&keyboard->keys);
/* If this is the first keyboard resource for this
* client... */
if (keyboard->focus_resource_list.prev ==
wl_resource_get_link(cr))
wl_data_device_set_keyboard_focus(seat);
}
}
static void
destroy_touch_resource(struct wl_resource *resource)
{
struct weston_touch *touch = wl_resource_get_user_data(resource);
wl_list_remove(wl_resource_get_link(resource));
if (touch) {
remove_input_resource_from_timestamps(resource,
&touch->timestamps_list);
}
}
static void
touch_release(struct wl_client *client, struct wl_resource *resource)
{
wl_resource_destroy(resource);
}
static const struct wl_touch_interface touch_interface = {
touch_release
};
static void
seat_get_touch(struct wl_client *client, struct wl_resource *resource,
uint32_t id)
{
struct weston_seat *seat = wl_resource_get_user_data(resource);
/* We use the touch_state directly, which means we'll
* give a wl_touch if the seat has ever had one - even though
* the spec explicitly states that this request only takes effect
* if the seat has the touch capability.
*
* This prevents a race between the compositor sending new
* capabilities and the client trying to use the old ones.
*/
struct weston_touch *touch = seat ? seat->touch_state : NULL;
struct wl_resource *cr;
cr = wl_resource_create(client, &wl_touch_interface,
wl_resource_get_version(resource), id);
if (cr == NULL) {
wl_client_post_no_memory(client);
return;
}
wl_list_init(wl_resource_get_link(cr));
wl_resource_set_implementation(cr, &touch_interface,
touch, destroy_touch_resource);
/* If we don't have a touch_state, the resource is inert, so there
* is nothing more to set up */
if (!touch)
return;
if (touch->focus &&
wl_resource_get_client(touch->focus->surface->resource) == client) {
wl_list_insert(&touch->focus_resource_list,
wl_resource_get_link(cr));
} else {
wl_list_insert(&touch->resource_list,
wl_resource_get_link(cr));
}
}
static void
seat_release(struct wl_client *client, struct wl_resource *resource)
{
wl_resource_destroy(resource);
}
static const struct wl_seat_interface seat_interface = {
seat_get_pointer,
seat_get_keyboard,
seat_get_touch,
seat_release,
};
static void
bind_seat(struct wl_client *client, void *data, uint32_t version, uint32_t id)
{
struct weston_seat *seat = data;
struct wl_resource *resource;
enum wl_seat_capability caps = 0;
resource = wl_resource_create(client,
&wl_seat_interface, version, id);
wl_list_insert(&seat->base_resource_list, wl_resource_get_link(resource));
wl_resource_set_implementation(resource, &seat_interface, data,
unbind_resource);
if (weston_seat_get_pointer(seat))
caps |= WL_SEAT_CAPABILITY_POINTER;
if (weston_seat_get_keyboard(seat))
caps |= WL_SEAT_CAPABILITY_KEYBOARD;
if (weston_seat_get_touch(seat))
caps |= WL_SEAT_CAPABILITY_TOUCH;
wl_seat_send_capabilities(resource, caps);
if (version >= WL_SEAT_NAME_SINCE_VERSION)
wl_seat_send_name(resource, seat->seat_name);
}
static void
relative_pointer_destroy(struct wl_client *client,
struct wl_resource *resource)
{
wl_resource_destroy(resource);
}
static const struct zwp_relative_pointer_v1_interface relative_pointer_interface = {
relative_pointer_destroy
};
static void
relative_pointer_manager_destroy(struct wl_client *client,
struct wl_resource *resource)
{
wl_resource_destroy(resource);
}
static void
relative_pointer_manager_get_relative_pointer(struct wl_client *client,
struct wl_resource *resource,
uint32_t id,
struct wl_resource *pointer_resource)
{
struct weston_pointer *pointer =
wl_resource_get_user_data(pointer_resource);
struct weston_pointer_client *pointer_client;
struct wl_resource *cr;
cr = wl_resource_create(client, &zwp_relative_pointer_v1_interface,
wl_resource_get_version(resource), id);
if (cr == NULL) {
wl_client_post_no_memory(client);
return;
}
pointer_client = weston_pointer_ensure_pointer_client(pointer, client);
if (!pointer_client) {
wl_client_post_no_memory(client);
return;
}
wl_list_insert(&pointer_client->relative_pointer_resources,
wl_resource_get_link(cr));
wl_resource_set_implementation(cr, &relative_pointer_interface,
pointer,
unbind_pointer_client_resource);
}
static const struct zwp_relative_pointer_manager_v1_interface relative_pointer_manager = {
relative_pointer_manager_destroy,
relative_pointer_manager_get_relative_pointer,
};
static void
bind_relative_pointer_manager(struct wl_client *client, void *data,
uint32_t version, uint32_t id)
{
struct weston_compositor *compositor = data;
struct wl_resource *resource;
resource = wl_resource_create(client,
&zwp_relative_pointer_manager_v1_interface,
1, id);
wl_resource_set_implementation(resource, &relative_pointer_manager,
compositor,
NULL);
}
WL_EXPORT int
weston_compositor_set_xkb_rule_names(struct weston_compositor *ec,
struct xkb_rule_names *names)
{
if (ec->xkb_context == NULL) {
ec->xkb_context = xkb_context_new(0);
if (ec->xkb_context == NULL) {
weston_log("failed to create XKB context\n");
return -1;
}
}
if (names)
ec->xkb_names = *names;
if (!ec->xkb_names.rules)
ec->xkb_names.rules = strdup("evdev");
if (!ec->xkb_names.model)
ec->xkb_names.model = strdup("pc105");
if (!ec->xkb_names.layout)
ec->xkb_names.layout = strdup("us");
return 0;
}
static void
weston_xkb_info_destroy(struct weston_xkb_info *xkb_info)
{
if (--xkb_info->ref_count > 0)
return;
xkb_keymap_unref(xkb_info->keymap);
if (xkb_info->keymap_string)
free(xkb_info->keymap_string);
free(xkb_info);
}
void
weston_compositor_xkb_destroy(struct weston_compositor *ec)
{
free((char *) ec->xkb_names.rules);
free((char *) ec->xkb_names.model);
free((char *) ec->xkb_names.layout);
free((char *) ec->xkb_names.variant);
free((char *) ec->xkb_names.options);
if (ec->xkb_info)
weston_xkb_info_destroy(ec->xkb_info);
xkb_context_unref(ec->xkb_context);
}
static struct weston_xkb_info *
weston_xkb_info_create(struct xkb_keymap *keymap)
{
struct weston_xkb_info *xkb_info = zalloc(sizeof *xkb_info);
if (xkb_info == NULL)
return NULL;
xkb_info->keymap = xkb_keymap_ref(keymap);
xkb_info->ref_count = 1;
xkb_info->shift_mod = xkb_keymap_mod_get_index(xkb_info->keymap,
XKB_MOD_NAME_SHIFT);
xkb_info->caps_mod = xkb_keymap_mod_get_index(xkb_info->keymap,
XKB_MOD_NAME_CAPS);
xkb_info->ctrl_mod = xkb_keymap_mod_get_index(xkb_info->keymap,
XKB_MOD_NAME_CTRL);
xkb_info->alt_mod = xkb_keymap_mod_get_index(xkb_info->keymap,
XKB_MOD_NAME_ALT);
xkb_info->mod2_mod = xkb_keymap_mod_get_index(xkb_info->keymap,
"Mod2");
xkb_info->mod3_mod = xkb_keymap_mod_get_index(xkb_info->keymap,
"Mod3");
xkb_info->super_mod = xkb_keymap_mod_get_index(xkb_info->keymap,
XKB_MOD_NAME_LOGO);
xkb_info->mod5_mod = xkb_keymap_mod_get_index(xkb_info->keymap,
"Mod5");
xkb_info->num_led = xkb_keymap_led_get_index(xkb_info->keymap,
XKB_LED_NAME_NUM);
xkb_info->caps_led = xkb_keymap_led_get_index(xkb_info->keymap,
XKB_LED_NAME_CAPS);
xkb_info->scroll_led = xkb_keymap_led_get_index(xkb_info->keymap,
XKB_LED_NAME_SCROLL);
xkb_info->keymap_string = xkb_keymap_get_as_string(xkb_info->keymap,
XKB_KEYMAP_FORMAT_TEXT_V1);
if (xkb_info->keymap_string == NULL) {
weston_log("failed to get string version of keymap\n");
goto err_keymap;
}
xkb_info->keymap_size = strlen(xkb_info->keymap_string) + 1;
return xkb_info;
err_keymap:
xkb_keymap_unref(xkb_info->keymap);
free(xkb_info);
return NULL;
}
static int
weston_compositor_build_global_keymap(struct weston_compositor *ec)
{
struct xkb_keymap *keymap;
if (ec->xkb_info != NULL)
return 0;
keymap = xkb_keymap_new_from_names(ec->xkb_context,
&ec->xkb_names,
0);
if (keymap == NULL) {
weston_log("failed to compile global XKB keymap\n");
weston_log(" tried rules %s, model %s, layout %s, variant %s, "
"options %s\n",
ec->xkb_names.rules, ec->xkb_names.model,
ec->xkb_names.layout, ec->xkb_names.variant,
ec->xkb_names.options);
return -1;
}
ec->xkb_info = weston_xkb_info_create(keymap);
xkb_keymap_unref(keymap);
if (ec->xkb_info == NULL)
return -1;
return 0;
}
WL_EXPORT void
weston_seat_update_keymap(struct weston_seat *seat, struct xkb_keymap *keymap)
{
struct weston_keyboard *keyboard = weston_seat_get_keyboard(seat);
if (!keyboard || !keymap)
return;
xkb_keymap_unref(keyboard->pending_keymap);
keyboard->pending_keymap = xkb_keymap_ref(keymap);
if (keyboard->keys.size == 0)
update_keymap(seat);
}
WL_EXPORT int
weston_seat_init_keyboard(struct weston_seat *seat, struct xkb_keymap *keymap)
{
struct weston_keyboard *keyboard;
if (seat->keyboard_state) {
seat->keyboard_device_count += 1;
if (seat->keyboard_device_count == 1)
seat_send_updated_caps(seat);
return 0;
}
keyboard = weston_keyboard_create();
if (keyboard == NULL) {
weston_log("failed to allocate weston keyboard struct\n");
return -1;
}
if (keymap != NULL) {
keyboard->xkb_info = weston_xkb_info_create(keymap);
if (keyboard->xkb_info == NULL)
goto err;
} else {
if (weston_compositor_build_global_keymap(seat->compositor) < 0)
goto err;
keyboard->xkb_info = seat->compositor->xkb_info;
keyboard->xkb_info->ref_count++;
}
keyboard->xkb_state.state = xkb_state_new(keyboard->xkb_info->keymap);
if (keyboard->xkb_state.state == NULL) {
weston_log("failed to initialise XKB state\n");
goto err;
}
keyboard->xkb_state.leds = 0;
seat->keyboard_state = keyboard;
seat->keyboard_device_count = 1;
keyboard->seat = seat;
seat_send_updated_caps(seat);
return 0;
err:
if (keyboard->xkb_info)
weston_xkb_info_destroy(keyboard->xkb_info);
free(keyboard);
return -1;
}
static void
weston_keyboard_reset_state(struct weston_keyboard *keyboard)
{
struct weston_seat *seat = keyboard->seat;
struct xkb_state *state;
state = xkb_state_new(keyboard->xkb_info->keymap);
if (!state) {
weston_log("failed to reset XKB state\n");
return;
}
xkb_state_unref(keyboard->xkb_state.state);
keyboard->xkb_state.state = state;
keyboard->xkb_state.leds = 0;
seat->modifier_state = 0;
}
WL_EXPORT void
weston_seat_release_keyboard(struct weston_seat *seat)
{
seat->keyboard_device_count--;
assert(seat->keyboard_device_count >= 0);
if (seat->keyboard_device_count == 0) {
weston_keyboard_set_focus(seat->keyboard_state, NULL);
weston_keyboard_cancel_grab(seat->keyboard_state);
weston_keyboard_reset_state(seat->keyboard_state);
seat_send_updated_caps(seat);
}
}
WL_EXPORT void
weston_seat_init_pointer(struct weston_seat *seat)
{
struct weston_pointer *pointer;
if (seat->pointer_state) {
seat->pointer_device_count += 1;
if (seat->pointer_device_count == 1)
seat_send_updated_caps(seat);
return;
}
pointer = weston_pointer_create(seat);
if (pointer == NULL)
return;
seat->pointer_state = pointer;
seat->pointer_device_count = 1;
pointer->seat = seat;
seat_send_updated_caps(seat);
}
WL_EXPORT void
weston_seat_release_pointer(struct weston_seat *seat)
{
struct weston_pointer *pointer = seat->pointer_state;
seat->pointer_device_count--;
if (seat->pointer_device_count == 0) {
weston_pointer_clear_focus(pointer);
weston_pointer_cancel_grab(pointer);
if (pointer->sprite)
pointer_unmap_sprite(pointer);
weston_pointer_reset_state(pointer);
seat_send_updated_caps(seat);
/* seat->pointer is intentionally not destroyed so that
* a newly attached pointer on this seat will retain
* the previous cursor co-ordinates.
*/
}
}
WL_EXPORT void
weston_seat_init_touch(struct weston_seat *seat)
{
struct weston_touch *touch;
if (seat->touch_state) {
seat->touch_device_count += 1;
if (seat->touch_device_count == 1)
seat_send_updated_caps(seat);
return;
}
touch = weston_touch_create();
if (touch == NULL)
return;
seat->touch_state = touch;
seat->touch_device_count = 1;
touch->seat = seat;
seat_send_updated_caps(seat);
}
WL_EXPORT void
weston_seat_release_touch(struct weston_seat *seat)
{
seat->touch_device_count--;
if (seat->touch_device_count == 0) {
weston_touch_set_focus(seat->touch_state, NULL);
weston_touch_cancel_grab(seat->touch_state);
weston_touch_reset_state(seat->touch_state);
seat_send_updated_caps(seat);
}
}
WL_EXPORT void
weston_seat_init(struct weston_seat *seat, struct weston_compositor *ec,
const char *seat_name)
{
memset(seat, 0, sizeof *seat);
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->destroy_signal);
wl_signal_init(&seat->updated_caps_signal);
seat->global = wl_global_create(ec->wl_display, &wl_seat_interface, 5,
seat, bind_seat);
seat->compositor = ec;
seat->modifier_state = 0;
seat->seat_name = strdup(seat_name);
wl_list_insert(ec->seat_list.prev, &seat->link);
clipboard_create(seat);
wl_signal_emit(&ec->seat_created_signal, seat);
}
WL_EXPORT void
weston_seat_release(struct weston_seat *seat)
{
struct wl_resource *resource;
wl_resource_for_each(resource, &seat->base_resource_list) {
wl_resource_set_user_data(resource, NULL);
}
wl_resource_for_each(resource, &seat->drag_resource_list) {
wl_resource_set_user_data(resource, NULL);
}
wl_list_remove(&seat->base_resource_list);
wl_list_remove(&seat->drag_resource_list);
wl_list_remove(&seat->link);
if (seat->saved_kbd_focus)
wl_list_remove(&seat->saved_kbd_focus_listener.link);
if (seat->pointer_state)
weston_pointer_destroy(seat->pointer_state);
if (seat->keyboard_state)
weston_keyboard_destroy(seat->keyboard_state);
if (seat->touch_state)
weston_touch_destroy(seat->touch_state);
free (seat->seat_name);
wl_global_destroy(seat->global);
wl_signal_emit(&seat->destroy_signal, seat);
}
/** Get a seat's keyboard pointer
*
* \param seat The seat to query
* \return The seat's keyboard pointer, or NULL if no keyboard is present
*
* The keyboard pointer for a seat isn't freed when all keyboards are removed,
* so it should only be used when the seat's keyboard_device_count is greater
* than zero. This function does that test and only returns a pointer
* when a keyboard is present.
*/
WL_EXPORT struct weston_keyboard *
weston_seat_get_keyboard(struct weston_seat *seat)
{
if (!seat)
return NULL;
if (seat->keyboard_device_count)
return seat->keyboard_state;
return NULL;
}
/** Get a seat's pointer pointer
*
* \param seat The seat to query
* \return The seat's pointer pointer, or NULL if no pointer device is present
*
* The pointer pointer for a seat isn't freed when all mice are removed,
* so it should only be used when the seat's pointer_device_count is greater
* than zero. This function does that test and only returns a pointer
* when a pointing device is present.
*/
WL_EXPORT struct weston_pointer *
weston_seat_get_pointer(struct weston_seat *seat)
{
if (!seat)
return NULL;
if (seat->pointer_device_count)
return seat->pointer_state;
return NULL;
}
static const struct zwp_locked_pointer_v1_interface locked_pointer_interface;
static const struct zwp_confined_pointer_v1_interface confined_pointer_interface;
static enum pointer_constraint_type
pointer_constraint_get_type(struct weston_pointer_constraint *constraint)
{
if (wl_resource_instance_of(constraint->resource,
&zwp_locked_pointer_v1_interface,
&locked_pointer_interface)) {
return POINTER_CONSTRAINT_TYPE_LOCK;
} else if (wl_resource_instance_of(constraint->resource,
&zwp_confined_pointer_v1_interface,
&confined_pointer_interface)) {
return POINTER_CONSTRAINT_TYPE_CONFINE;
}
abort();
return 0;
}
static void
pointer_constraint_notify_activated(struct weston_pointer_constraint *constraint)
{
struct wl_resource *resource = constraint->resource;
switch (pointer_constraint_get_type(constraint)) {
case POINTER_CONSTRAINT_TYPE_LOCK:
zwp_locked_pointer_v1_send_locked(resource);
break;
case POINTER_CONSTRAINT_TYPE_CONFINE:
zwp_confined_pointer_v1_send_confined(resource);
break;
}
}
static void
pointer_constraint_notify_deactivated(struct weston_pointer_constraint *constraint)
{
struct wl_resource *resource = constraint->resource;
switch (pointer_constraint_get_type(constraint)) {
case POINTER_CONSTRAINT_TYPE_LOCK:
zwp_locked_pointer_v1_send_unlocked(resource);
break;
case POINTER_CONSTRAINT_TYPE_CONFINE:
zwp_confined_pointer_v1_send_unconfined(resource);
break;
}
}
static struct weston_pointer_constraint *
get_pointer_constraint_for_pointer(struct weston_surface *surface,
struct weston_pointer *pointer)
{
struct weston_pointer_constraint *constraint;
wl_list_for_each(constraint, &surface->pointer_constraints, link) {
if (constraint->pointer == pointer)
return constraint;
}
return NULL;
}
/** Get a seat's touch pointer
*
* \param seat The seat to query
* \return The seat's touch pointer, or NULL if no touch device is present
*
* The touch pointer for a seat isn't freed when all touch devices are removed,
* so it should only be used when the seat's touch_device_count is greater
* than zero. This function does that test and only returns a pointer
* when a touch device is present.
*/
WL_EXPORT struct weston_touch *
weston_seat_get_touch(struct weston_seat *seat)
{
if (!seat)
return NULL;
if (seat->touch_device_count)
return seat->touch_state;
return NULL;
}
/** Sets the keyboard focus to the given surface
*
* \param surface the surface to focus on
* \param seat The seat to query
*/
WL_EXPORT void
weston_seat_set_keyboard_focus(struct weston_seat *seat,
struct weston_surface *surface)
{
struct weston_compositor *compositor = seat->compositor;
struct weston_keyboard *keyboard = weston_seat_get_keyboard(seat);
struct weston_surface_activation_data activation_data;
if (keyboard && keyboard->focus != surface) {
weston_keyboard_set_focus(keyboard, surface);
wl_data_device_set_keyboard_focus(seat);
}
inc_activate_serial(compositor);
activation_data = (struct weston_surface_activation_data) {
.surface = surface,
.seat = seat,
};
wl_signal_emit(&compositor->activate_signal, &activation_data);
}
static void
enable_pointer_constraint(struct weston_pointer_constraint *constraint,
struct weston_view *view)
{
assert(constraint->view == NULL);
constraint->view = view;
pointer_constraint_notify_activated(constraint);
weston_pointer_start_grab(constraint->pointer, &constraint->grab);
wl_list_remove(&constraint->surface_destroy_listener.link);
wl_list_init(&constraint->surface_destroy_listener.link);
}
static bool
is_pointer_constraint_enabled(struct weston_pointer_constraint *constraint)
{
return constraint->view != NULL;
}
static void
weston_pointer_constraint_disable(struct weston_pointer_constraint *constraint)
{
constraint->view = NULL;
pointer_constraint_notify_deactivated(constraint);
weston_pointer_end_grab(constraint->grab.pointer);
}
void
weston_pointer_constraint_destroy(struct weston_pointer_constraint *constraint)
{
if (is_pointer_constraint_enabled(constraint))
weston_pointer_constraint_disable(constraint);
wl_list_remove(&constraint->pointer_destroy_listener.link);
wl_list_remove(&constraint->surface_destroy_listener.link);
wl_list_remove(&constraint->surface_commit_listener.link);
wl_list_remove(&constraint->surface_activate_listener.link);
wl_resource_set_user_data(constraint->resource, NULL);
pixman_region32_fini(&constraint->region);
wl_list_remove(&constraint->link);
free(constraint);
}
static void
disable_pointer_constraint(struct weston_pointer_constraint *constraint)
{
switch (constraint->lifetime) {
case ZWP_POINTER_CONSTRAINTS_V1_LIFETIME_ONESHOT:
weston_pointer_constraint_destroy(constraint);
break;
case ZWP_POINTER_CONSTRAINTS_V1_LIFETIME_PERSISTENT:
weston_pointer_constraint_disable(constraint);
break;
}
}
static bool
is_within_constraint_region(struct weston_pointer_constraint *constraint,
wl_fixed_t sx, wl_fixed_t sy)
{
struct weston_surface *surface = constraint->surface;
pixman_region32_t constraint_region;
bool result;
pixman_region32_init(&constraint_region);
pixman_region32_intersect(&constraint_region,
&surface->input,
&constraint->region);
result = pixman_region32_contains_point(&constraint_region,
wl_fixed_to_int(sx),
wl_fixed_to_int(sy),
NULL);
pixman_region32_fini(&constraint_region);
return result;
}
static void
maybe_enable_pointer_constraint(struct weston_pointer_constraint *constraint)
{
struct weston_surface *surface = constraint->surface;
struct weston_view *vit;
struct weston_view *view = NULL;
struct weston_pointer *pointer = constraint->pointer;
struct weston_keyboard *keyboard;
struct weston_seat *seat = pointer->seat;
int32_t x, y;
/* Postpone if no view of the surface was most recently clicked. */
wl_list_for_each(vit, &surface->views, surface_link) {
if (vit->click_to_activate_serial ==
surface->compositor->activate_serial) {
view = vit;
}
}
if (view == NULL)
return;
/* Postpone if surface doesn't have keyboard focus. */
keyboard = weston_seat_get_keyboard(seat);
if (!keyboard || keyboard->focus != surface)
return;
/* Postpone constraint if the pointer is not within the
* constraint region.
*/
weston_view_from_global(view,
wl_fixed_to_int(pointer->x),
wl_fixed_to_int(pointer->y),
&x, &y);
if (!is_within_constraint_region(constraint,
wl_fixed_from_int(x),
wl_fixed_from_int(y)))
return;
enable_pointer_constraint(constraint, view);
}
static void
locked_pointer_grab_pointer_focus(struct weston_pointer_grab *grab)
{
}
static void
locked_pointer_grab_pointer_motion(struct weston_pointer_grab *grab,
const struct timespec *time,
struct weston_pointer_motion_event *event)
{
pointer_send_relative_motion(grab->pointer, time, event);
}
static void
locked_pointer_grab_pointer_button(struct weston_pointer_grab *grab,
const struct timespec *time,
uint32_t button,
uint32_t state_w)
{
weston_pointer_send_button(grab->pointer, time, button, state_w);
}
static void
locked_pointer_grab_pointer_axis(struct weston_pointer_grab *grab,
const struct timespec *time,
struct weston_pointer_axis_event *event)
{
weston_pointer_send_axis(grab->pointer, time, event);
}
static void
locked_pointer_grab_pointer_axis_source(struct weston_pointer_grab *grab,
uint32_t source)
{
weston_pointer_send_axis_source(grab->pointer, source);
}
static void
locked_pointer_grab_pointer_frame(struct weston_pointer_grab *grab)
{
weston_pointer_send_frame(grab->pointer);
}
static void
locked_pointer_grab_pointer_cancel(struct weston_pointer_grab *grab)
{
struct weston_pointer_constraint *constraint =
container_of(grab, struct weston_pointer_constraint, grab);
disable_pointer_constraint(constraint);
}
static const struct weston_pointer_grab_interface
locked_pointer_grab_interface = {
locked_pointer_grab_pointer_focus,
locked_pointer_grab_pointer_motion,
locked_pointer_grab_pointer_button,
locked_pointer_grab_pointer_axis,
locked_pointer_grab_pointer_axis_source,
locked_pointer_grab_pointer_frame,
locked_pointer_grab_pointer_cancel,
};
static void
pointer_constraint_constrain_resource_destroyed(struct wl_resource *resource)
{
struct weston_pointer_constraint *constraint =
wl_resource_get_user_data(resource);
if (!constraint)
return;
weston_pointer_constraint_destroy(constraint);
}
static void
pointer_constraint_surface_activate(struct wl_listener *listener, void *data)
{
struct weston_surface_activation_data *activation = data;
struct weston_pointer *pointer;
struct weston_surface *focus = activation->surface;
struct weston_pointer_constraint *constraint =
container_of(listener, struct weston_pointer_constraint,
surface_activate_listener);
bool is_constraint_surface;
pointer = weston_seat_get_pointer(activation->seat);
if (!pointer)
return;
is_constraint_surface =
get_pointer_constraint_for_pointer(focus, pointer) == constraint;
if (is_constraint_surface &&
!is_pointer_constraint_enabled(constraint))
maybe_enable_pointer_constraint(constraint);
else if (!is_constraint_surface &&
is_pointer_constraint_enabled(constraint))
disable_pointer_constraint(constraint);
}
static void
pointer_constraint_pointer_destroyed(struct wl_listener *listener, void *data)
{
struct weston_pointer_constraint *constraint =
container_of(listener, struct weston_pointer_constraint,
pointer_destroy_listener);
weston_pointer_constraint_destroy(constraint);
}
static void
pointer_constraint_surface_destroyed(struct wl_listener *listener, void *data)
{
struct weston_pointer_constraint *constraint =
container_of(listener, struct weston_pointer_constraint,
surface_destroy_listener);
weston_pointer_constraint_destroy(constraint);
}
static void
pointer_constraint_surface_committed(struct wl_listener *listener, void *data)
{
struct weston_pointer_constraint *constraint =
container_of(listener, struct weston_pointer_constraint,
surface_commit_listener);
if (constraint->region_is_pending) {
constraint->region_is_pending = false;
pixman_region32_copy(&constraint->region,
&constraint->region_pending);
pixman_region32_fini(&constraint->region_pending);
pixman_region32_init(&constraint->region_pending);
}
if (constraint->hint_is_pending) {
constraint->hint_is_pending = false;
constraint->hint_is_pending = true;
constraint->hint_x = constraint->hint_x_pending;
constraint->hint_y = constraint->hint_y_pending;
}
if (pointer_constraint_get_type(constraint) ==
POINTER_CONSTRAINT_TYPE_CONFINE &&
is_pointer_constraint_enabled(constraint))
maybe_warp_confined_pointer(constraint);
}
static struct weston_pointer_constraint *
weston_pointer_constraint_create(struct weston_surface *surface,
struct weston_pointer *pointer,
struct weston_region *region,
enum zwp_pointer_constraints_v1_lifetime lifetime,
struct wl_resource *cr,
const struct weston_pointer_grab_interface *grab_interface)
{
struct weston_pointer_constraint *constraint;
constraint = zalloc(sizeof *constraint);
if (!constraint)
return NULL;
constraint->lifetime = lifetime;
pixman_region32_init(&constraint->region);
pixman_region32_init(&constraint->region_pending);
wl_list_insert(&surface->pointer_constraints, &constraint->link);
constraint->surface = surface;
constraint->pointer = pointer;
constraint->resource = cr;
constraint->grab.interface = grab_interface;
if (region) {
pixman_region32_copy(&constraint->region,
&region->region);
} else {
pixman_region32_fini(&constraint->region);
region_init_infinite(&constraint->region);
}
constraint->surface_activate_listener.notify =
pointer_constraint_surface_activate;
constraint->surface_destroy_listener.notify =
pointer_constraint_surface_destroyed;
constraint->surface_commit_listener.notify =
pointer_constraint_surface_committed;
constraint->pointer_destroy_listener.notify =
pointer_constraint_pointer_destroyed;
wl_signal_add(&surface->compositor->activate_signal,
&constraint->surface_activate_listener);
wl_signal_add(&pointer->destroy_signal,
&constraint->pointer_destroy_listener);
wl_signal_add(&surface->destroy_signal,
&constraint->surface_destroy_listener);
wl_signal_add(&surface->commit_signal,
&constraint->surface_commit_listener);
return constraint;
}
static void
init_pointer_constraint(struct wl_resource *pointer_constraints_resource,
uint32_t id,
struct weston_surface *surface,
struct weston_pointer *pointer,
struct weston_region *region,
enum zwp_pointer_constraints_v1_lifetime lifetime,
const struct wl_interface *interface,
const void *implementation,
const struct weston_pointer_grab_interface *grab_interface)
{
struct wl_client *client =
wl_resource_get_client(pointer_constraints_resource);
struct wl_resource *cr;
struct weston_pointer_constraint *constraint;
if (pointer && get_pointer_constraint_for_pointer(surface, pointer)) {
wl_resource_post_error(pointer_constraints_resource,
ZWP_POINTER_CONSTRAINTS_V1_ERROR_ALREADY_CONSTRAINED,
"the pointer has a lock/confine request on this surface");
return;
}
cr = wl_resource_create(client, interface,
wl_resource_get_version(pointer_constraints_resource),
id);
if (cr == NULL) {
wl_client_post_no_memory(client);
return;
}
if (pointer) {
constraint = weston_pointer_constraint_create(surface, pointer,
region, lifetime,
cr, grab_interface);
if (constraint == NULL) {
wl_client_post_no_memory(client);
return;
}
} else {
constraint = NULL;
}
wl_resource_set_implementation(cr, implementation, constraint,
pointer_constraint_constrain_resource_destroyed);
if (constraint)
maybe_enable_pointer_constraint(constraint);
}
static void
pointer_constraints_destroy(struct wl_client *client,
struct wl_resource *resource)
{
wl_resource_destroy(resource);
}
static void
locked_pointer_destroy(struct wl_client *client,
struct wl_resource *resource)
{
struct weston_pointer_constraint *constraint =
wl_resource_get_user_data(resource);
wl_fixed_t x, y;
if (constraint && constraint->view && constraint->hint_is_pending &&
is_within_constraint_region(constraint,
constraint->hint_x,
constraint->hint_y)) {
weston_view_to_global_fixed(constraint->view,
constraint->hint_x,
constraint->hint_y,
&x, &y);
weston_pointer_move_to(constraint->pointer, x, y);
}
wl_resource_destroy(resource);
}
static void
locked_pointer_set_cursor_position_hint(struct wl_client *client,
struct wl_resource *resource,
wl_fixed_t surface_x,
wl_fixed_t surface_y)
{
struct weston_pointer_constraint *constraint =
wl_resource_get_user_data(resource);
/* Ignore a set cursor hint that was sent after the lock was cancelled.
*/
if (!constraint ||
!constraint->resource ||
constraint->resource != resource)
return;
constraint->hint_is_pending = true;
constraint->hint_x_pending = surface_x;
constraint->hint_y_pending = surface_y;
}
static void
locked_pointer_set_region(struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *region_resource)
{
struct weston_pointer_constraint *constraint =
wl_resource_get_user_data(resource);
struct weston_region *region = region_resource ?
wl_resource_get_user_data(region_resource) : NULL;
if (!constraint)
return;
if (region) {
pixman_region32_copy(&constraint->region_pending,
&region->region);
} else {
pixman_region32_fini(&constraint->region_pending);
region_init_infinite(&constraint->region_pending);
}
constraint->region_is_pending = true;
}
static const struct zwp_locked_pointer_v1_interface locked_pointer_interface = {
locked_pointer_destroy,
locked_pointer_set_cursor_position_hint,
locked_pointer_set_region,
};
static void
pointer_constraints_lock_pointer(struct wl_client *client,
struct wl_resource *resource,
uint32_t id,
struct wl_resource *surface_resource,
struct wl_resource *pointer_resource,
struct wl_resource *region_resource,
uint32_t lifetime)
{
struct weston_surface *surface =
wl_resource_get_user_data(surface_resource);
struct weston_pointer *pointer = wl_resource_get_user_data(pointer_resource);
struct weston_region *region = region_resource ?
wl_resource_get_user_data(region_resource) : NULL;
init_pointer_constraint(resource, id, surface, pointer, region, lifetime,
&zwp_locked_pointer_v1_interface,
&locked_pointer_interface,
&locked_pointer_grab_interface);
}
static void
confined_pointer_grab_pointer_focus(struct weston_pointer_grab *grab)
{
}
static double
vec2d_cross_product(struct vec2d a, struct vec2d b)
{
return a.x * b.y - a.y * b.x;
}
static struct vec2d
vec2d_add(struct vec2d a, struct vec2d b)
{
return (struct vec2d) {
.x = a.x + b.x,
.y = a.y + b.y,
};
}
static struct vec2d
vec2d_subtract(struct vec2d a, struct vec2d b)
{
return (struct vec2d) {
.x = a.x - b.x,
.y = a.y - b.y,
};
}
static struct vec2d
vec2d_multiply_constant(double c, struct vec2d a)
{
return (struct vec2d) {
.x = c * a.x,
.y = c * a.y,
};
}
static bool
lines_intersect(struct line *line1, struct line *line2,
struct vec2d *intersection)
{
struct vec2d p = line1->a;
struct vec2d r = vec2d_subtract(line1->b, line1->a);
struct vec2d q = line2->a;
struct vec2d s = vec2d_subtract(line2->b, line2->a);
double rxs;
double sxr;
double t;
double u;
/*
* The line (p, r) and (q, s) intersects where
*
* p + t r = q + u s
*
* Calculate t:
*
* (p + t r) × s = (q + u s) × s
* p × s + t (r × s) = q × s + u (s × s)
* p × s + t (r × s) = q × s
* t (r × s) = q × s - p × s
* t (r × s) = (q - p) × s
* t = ((q - p) × s) / (r × s)
*
* Using the same method, for u we get:
*
* u = ((p - q) × r) / (s × r)
*/
rxs = vec2d_cross_product(r, s);
sxr = vec2d_cross_product(s, r);
/* If r × s = 0 then the lines are either parallel or collinear. */
if (fabs(rxs) < DBL_MIN)
return false;
t = vec2d_cross_product(vec2d_subtract(q, p), s) / rxs;
u = vec2d_cross_product(vec2d_subtract(p, q), r) / sxr;
/* The lines only intersect if 0 ≤ t ≤ 1 and 0 ≤ u ≤ 1. */
if (t < 0.0 || t > 1.0 || u < 0.0 || u > 1.0)
return false;
*intersection = vec2d_add(p, vec2d_multiply_constant(t, r));
return true;
}
static struct border *
add_border(struct wl_array *array,
double x1, double y1,
double x2, double y2,
enum motion_direction blocking_dir)
{
struct border *border = wl_array_add(array, sizeof *border);
*border = (struct border) {
.line = (struct line) {
.a = (struct vec2d) {
.x = x1,
.y = y1,
},
.b = (struct vec2d) {
.x = x2,
.y = y2,
},
},
.blocking_dir = blocking_dir,
};
return border;
}
static int
compare_lines_x(const void *a, const void *b)
{
const struct border *border_a = a;
const struct border *border_b = b;
if (border_a->line.a.x == border_b->line.a.x)
return border_a->line.b.x < border_b->line.b.x;
else
return border_a->line.a.x > border_b->line.a.x;
}
static void
add_non_overlapping_edges(pixman_box32_t *boxes,
int band_above_start,
int band_below_start,
int band_below_end,
struct wl_array *borders)
{
int i;
struct wl_array band_merge;
struct border *border;
struct border *prev_border;
struct border *new_border;
wl_array_init(&band_merge);
/* Add bottom band of previous row, and top band of current row, and
* sort them so lower left x coordinate comes first. If there are two
* borders with the same left x coordinate, the wider one comes first.
*/
for (i = band_above_start; i < band_below_start; i++) {
pixman_box32_t *box = &boxes[i];
add_border(&band_merge, box->x1, box->y2, box->x2, box->y2,
MOTION_DIRECTION_POSITIVE_Y);
}
for (i = band_below_start; i < band_below_end; i++) {
pixman_box32_t *box= &boxes[i];
add_border(&band_merge, box->x1, box->y1, box->x2, box->y1,
MOTION_DIRECTION_NEGATIVE_Y);
}
qsort(band_merge.data,
band_merge.size / sizeof *border,
sizeof *border,
compare_lines_x);
/* Combine the two combined bands so that any overlapping border is
* eliminated. */
prev_border = NULL;
wl_array_for_each(border, &band_merge) {
assert(border->line.a.y == border->line.b.y);
assert(!prev_border ||
prev_border->line.a.y == border->line.a.y);
assert(!prev_border ||
(prev_border->line.a.x != border->line.a.x ||
prev_border->line.b.x != border->line.b.x));
assert(!prev_border ||
prev_border->line.a.x <= border->line.a.x);
if (prev_border &&
prev_border->line.a.x == border->line.a.x) {
/*
* ------------ +
* ------- =
* [ ]-----
*/
prev_border->line.a.x = border->line.b.x;
} else if (prev_border &&
prev_border->line.b.x == border->line.b.x) {
/*
* ------------ +
* ------ =
* ------[ ]
*/
prev_border->line.b.x = border->line.a.x;
} else if (prev_border &&
prev_border->line.b.x == border->line.a.x) {
/*
* -------- +
* ------ =
* --------------
*/
prev_border->line.b.x = border->line.b.x;
} else if (prev_border &&
prev_border->line.b.x >= border->line.a.x) {
/*
* --------------- +
* ------ =
* -----[ ]----
*/
new_border = add_border(borders,
border->line.b.x,
border->line.b.y,
prev_border->line.b.x,
prev_border->line.b.y,
prev_border->blocking_dir);
prev_border->line.b.x = border->line.a.x;
prev_border = new_border;
} else {
assert(!prev_border ||
prev_border->line.b.x < border->line.a.x);
/*
* First border or non-overlapping.
*
* ----- +
* ----- =
* ----- -----
*/
new_border = wl_array_add(borders, sizeof *border);
*new_border = *border;
prev_border = new_border;
}
}
wl_array_release(&band_merge);
}
static void
add_band_bottom_edges(pixman_box32_t *boxes,
int band_start,
int band_end,
struct wl_array *borders)
{
int i;
for (i = band_start; i < band_end; i++) {
add_border(borders,
boxes[i].x1, boxes[i].y2,
boxes[i].x2, boxes[i].y2,
MOTION_DIRECTION_POSITIVE_Y);
}
}
static void
region_to_outline(pixman_region32_t *region, struct wl_array *borders)
{
pixman_box32_t *boxes;
int num_boxes;
int i;
int top_most, bottom_most;
int current_roof;
int prev_top;
int band_start, prev_band_start;
/*
* Remove any overlapping lines from the set of rectangles. Note that
* pixman regions are grouped as rows of rectangles, where rectangles
* in one row never touch or overlap and are all of the same height.
*
* -------- --- -------- ---
* | | | | | | | |
* ----------====---- --- ----------- ----- ---
* | | => | |
* ----==========--------- ----- ----------
* | | | |
* ------------------- -------------------
*
*/
boxes = pixman_region32_rectangles(region, &num_boxes);
prev_top = 0;
top_most = boxes[0].y1;
current_roof = top_most;
bottom_most = boxes[num_boxes - 1].y2;
band_start = 0;
prev_band_start = 0;
for (i = 0; i < num_boxes; i++) {
/* Detect if there is a vertical empty space, and add the lower
* level of the previous band if so was the case. */
if (i > 0 &&
boxes[i].y1 != prev_top &&
boxes[i].y1 != boxes[i - 1].y2) {
current_roof = boxes[i].y1;
add_band_bottom_edges(boxes,
band_start,
i,
borders);
}
/* Special case adding the last band, since it won't be handled
* by the band change detection below. */
if (boxes[i].y1 != current_roof && i == num_boxes - 1) {
if (boxes[i].y1 != prev_top) {
/* The last band is a single box, so we don't
* have a prev_band_start to tell us when the
* previous band started. */
add_non_overlapping_edges(boxes,
band_start,
i,
i + 1,
borders);
} else {
add_non_overlapping_edges(boxes,
prev_band_start,
band_start,
i + 1,
borders);
}
}
/* Detect when passing a band and combine the top border of the
* just passed band with the bottom band of the previous band.
*/
if (boxes[i].y1 != top_most && boxes[i].y1 != prev_top) {
/* Combine the two passed bands. */
if (prev_top != current_roof) {
add_non_overlapping_edges(boxes,
prev_band_start,
band_start,
i,
borders);
}
prev_band_start = band_start;
band_start = i;
}
/* Add the top border if the box is part of the current roof. */
if (boxes[i].y1 == current_roof) {
add_border(borders,
boxes[i].x1, boxes[i].y1,
boxes[i].x2, boxes[i].y1,
MOTION_DIRECTION_NEGATIVE_Y);
}
/* Add the bottom border of the last band. */
if (boxes[i].y2 == bottom_most) {
add_border(borders,
boxes[i].x1, boxes[i].y2,
boxes[i].x2, boxes[i].y2,
MOTION_DIRECTION_POSITIVE_Y);
}
/* Always add the left border. */
add_border(borders,
boxes[i].x1, boxes[i].y1,
boxes[i].x1, boxes[i].y2,
MOTION_DIRECTION_NEGATIVE_X);
/* Always add the right border. */
add_border(borders,
boxes[i].x2, boxes[i].y1,
boxes[i].x2, boxes[i].y2,
MOTION_DIRECTION_POSITIVE_X);
prev_top = boxes[i].y1;
}
}
static bool
is_border_horizontal (struct border *border)
{
return border->line.a.y == border->line.b.y;
}
static bool
is_border_blocking_directions(struct border *border,
uint32_t directions)
{
/* Don't block parallel motions. */
if (is_border_horizontal(border)) {
if ((directions & (MOTION_DIRECTION_POSITIVE_Y |
MOTION_DIRECTION_NEGATIVE_Y)) == 0)
return false;
} else {
if ((directions & (MOTION_DIRECTION_POSITIVE_X |
MOTION_DIRECTION_NEGATIVE_X)) == 0)
return false;
}
return (~border->blocking_dir & directions) != directions;
}
static struct border *
get_closest_border(struct wl_array *borders,
struct line *motion,
uint32_t directions)
{
struct border *border;
struct vec2d intersection;
struct vec2d delta;
double distance_2;
struct border *closest_border = NULL;
double closest_distance_2 = DBL_MAX;
wl_array_for_each(border, borders) {
if (!is_border_blocking_directions(border, directions))
continue;
if (!lines_intersect(&border->line, motion, &intersection))
continue;
delta = vec2d_subtract(intersection, motion->a);
distance_2 = delta.x*delta.x + delta.y*delta.y;
if (distance_2 < closest_distance_2) {
closest_border = border;
closest_distance_2 = distance_2;
}
}
return closest_border;
}
static void
clamp_to_border(struct border *border,
struct line *motion,
uint32_t *motion_dir)
{
/*
* When clamping either rightward or downward motions, the motion needs
* to be clamped so that the destination coordinate does not end up on
* the border (see weston_pointer_clamp_event_to_region). Do this by
* clamping such motions to the border minus the smallest possible
* wl_fixed_t value.
*/
if (is_border_horizontal(border)) {
if (*motion_dir & MOTION_DIRECTION_POSITIVE_Y)
motion->b.y = border->line.a.y - wl_fixed_to_double(1);
else
motion->b.y = border->line.a.y;
*motion_dir &= ~(MOTION_DIRECTION_POSITIVE_Y |
MOTION_DIRECTION_NEGATIVE_Y);
} else {
if (*motion_dir & MOTION_DIRECTION_POSITIVE_X)
motion->b.x = border->line.a.x - wl_fixed_to_double(1);
else
motion->b.x = border->line.a.x;
*motion_dir &= ~(MOTION_DIRECTION_POSITIVE_X |
MOTION_DIRECTION_NEGATIVE_X);
}
}
static uint32_t
get_motion_directions(struct line *motion)
{
uint32_t directions = 0;
if (motion->a.x < motion->b.x)
directions |= MOTION_DIRECTION_POSITIVE_X;
else if (motion->a.x > motion->b.x)
directions |= MOTION_DIRECTION_NEGATIVE_X;
if (motion->a.y < motion->b.y)
directions |= MOTION_DIRECTION_POSITIVE_Y;
else if (motion->a.y > motion->b.y)
directions |= MOTION_DIRECTION_NEGATIVE_Y;
return directions;
}
static void
weston_pointer_clamp_event_to_region(struct weston_pointer *pointer,
struct weston_pointer_motion_event *event,
pixman_region32_t *region,
wl_fixed_t *clamped_x,
wl_fixed_t *clamped_y)
{
wl_fixed_t x, y;
wl_fixed_t sx, sy;
wl_fixed_t old_sx = pointer->sx;
wl_fixed_t old_sy = pointer->sy;
struct wl_array borders;
struct line motion;
struct border *closest_border;
float new_x_f, new_y_f;
uint32_t directions;
weston_pointer_motion_to_abs(pointer, event, &x, &y);
weston_view_from_global_fixed(pointer->focus, x, y, &sx, &sy);
wl_array_init(&borders);
/*
* Generate borders given the confine region we are to use. The borders
* are defined to be the outer region of the allowed area. This means
* top/left borders are "within" the allowed area, while bottom/right
* borders are outside. This needs to be considered when clamping
* confined motion vectors.
*/
region_to_outline(region, &borders);
motion = (struct line) {
.a = (struct vec2d) {
.x = wl_fixed_to_double(old_sx),
.y = wl_fixed_to_double(old_sy),
},
.b = (struct vec2d) {
.x = wl_fixed_to_double(sx),
.y = wl_fixed_to_double(sy),
},
};
directions = get_motion_directions(&motion);
while (directions) {
closest_border = get_closest_border(&borders,
&motion,
directions);
if (closest_border)
clamp_to_border(closest_border, &motion, &directions);
else
break;
}
weston_view_to_global_float(pointer->focus,
(float) motion.b.x, (float) motion.b.y,
&new_x_f, &new_y_f);
*clamped_x = wl_fixed_from_double(new_x_f);
*clamped_y = wl_fixed_from_double(new_y_f);
wl_array_release(&borders);
}
static double
point_to_border_distance_2(struct border *border, double x, double y)
{
double orig_x, orig_y;
double dx, dy;
if (is_border_horizontal(border)) {
if (x < border->line.a.x)
orig_x = border->line.a.x;
else if (x > border->line.b.x)
orig_x = border->line.b.x;
else
orig_x = x;
orig_y = border->line.a.y;
} else {
if (y < border->line.a.y)
orig_y = border->line.a.y;
else if (y > border->line.b.y)
orig_y = border->line.b.y;
else
orig_y = y;
orig_x = border->line.a.x;
}
dx = fabs(orig_x - x);
dy = fabs(orig_y - y);
return dx*dx + dy*dy;
}
static void
warp_to_behind_border(struct border *border, wl_fixed_t *sx, wl_fixed_t *sy)
{
switch (border->blocking_dir) {
case MOTION_DIRECTION_POSITIVE_X:
case MOTION_DIRECTION_NEGATIVE_X:
if (border->blocking_dir == MOTION_DIRECTION_POSITIVE_X)
*sx = wl_fixed_from_double(border->line.a.x) - 1;
else
*sx = wl_fixed_from_double(border->line.a.x) + 1;
if (*sy < wl_fixed_from_double(border->line.a.y))
*sy = wl_fixed_from_double(border->line.a.y) + 1;
else if (*sy > wl_fixed_from_double(border->line.b.y))
*sy = wl_fixed_from_double(border->line.b.y) - 1;
break;
case MOTION_DIRECTION_POSITIVE_Y:
case MOTION_DIRECTION_NEGATIVE_Y:
if (border->blocking_dir == MOTION_DIRECTION_POSITIVE_Y)
*sy = wl_fixed_from_double(border->line.a.y) - 1;
else
*sy = wl_fixed_from_double(border->line.a.y) + 1;
if (*sx < wl_fixed_from_double(border->line.a.x))
*sx = wl_fixed_from_double(border->line.a.x) + 1;
else if (*sx > wl_fixed_from_double(border->line.b.x))
*sx = wl_fixed_from_double(border->line.b.x) - 1;
break;
}
}
static void
maybe_warp_confined_pointer(struct weston_pointer_constraint *constraint)
{
wl_fixed_t x;
wl_fixed_t y;
wl_fixed_t sx;
wl_fixed_t sy;
weston_view_from_global_fixed(constraint->view,
constraint->pointer->x,
constraint->pointer->y,
&sx,
&sy);
if (!is_within_constraint_region(constraint, sx, sy)) {
double xf = wl_fixed_to_double(sx);
double yf = wl_fixed_to_double(sy);
pixman_region32_t confine_region;
struct wl_array borders;
struct border *border;
double closest_distance_2 = DBL_MAX;
struct border *closest_border = NULL;
wl_array_init(&borders);
pixman_region32_init(&confine_region);
pixman_region32_intersect(&confine_region,
&constraint->view->surface->input,
&constraint->region);
region_to_outline(&confine_region, &borders);
pixman_region32_fini(&confine_region);
wl_array_for_each(border, &borders) {
double distance_2;
distance_2 = point_to_border_distance_2(border, xf, yf);
if (distance_2 < closest_distance_2) {
closest_border = border;
closest_distance_2 = distance_2;
}
}
assert(closest_border);
warp_to_behind_border(closest_border, &sx, &sy);
wl_array_release(&borders);
weston_view_to_global_fixed(constraint->view, sx, sy, &x, &y);
weston_pointer_move_to(constraint->pointer, x, y);
}
}
static void
confined_pointer_grab_pointer_motion(struct weston_pointer_grab *grab,
const struct timespec *time,
struct weston_pointer_motion_event *event)
{
struct weston_pointer_constraint *constraint =
container_of(grab, struct weston_pointer_constraint, grab);
struct weston_pointer *pointer = grab->pointer;
struct weston_surface *surface;
wl_fixed_t x, y;
wl_fixed_t old_sx = pointer->sx;
wl_fixed_t old_sy = pointer->sy;
pixman_region32_t confine_region;
assert(pointer->focus);
assert(pointer->focus->surface == constraint->surface);
surface = pointer->focus->surface;
pixman_region32_init(&confine_region);
pixman_region32_intersect(&confine_region,
&surface->input,
&constraint->region);
weston_pointer_clamp_event_to_region(pointer, event,
&confine_region, &x, &y);
weston_pointer_move_to(pointer, x, y);
pixman_region32_fini(&confine_region);
weston_view_from_global_fixed(pointer->focus, x, y,
&pointer->sx, &pointer->sy);
if (old_sx != pointer->sx || old_sy != pointer->sy) {
pointer_send_motion(pointer, time,
pointer->sx, pointer->sy);
}
pointer_send_relative_motion(pointer, time, event);
}
static void
confined_pointer_grab_pointer_button(struct weston_pointer_grab *grab,
const struct timespec *time,
uint32_t button,
uint32_t state_w)
{
weston_pointer_send_button(grab->pointer, time, button, state_w);
}
static void
confined_pointer_grab_pointer_axis(struct weston_pointer_grab *grab,
const struct timespec *time,
struct weston_pointer_axis_event *event)
{
weston_pointer_send_axis(grab->pointer, time, event);
}
static void
confined_pointer_grab_pointer_axis_source(struct weston_pointer_grab *grab,
uint32_t source)
{
weston_pointer_send_axis_source(grab->pointer, source);
}
static void
confined_pointer_grab_pointer_frame(struct weston_pointer_grab *grab)
{
weston_pointer_send_frame(grab->pointer);
}
static void
confined_pointer_grab_pointer_cancel(struct weston_pointer_grab *grab)
{
struct weston_pointer_constraint *constraint =
container_of(grab, struct weston_pointer_constraint, grab);
disable_pointer_constraint(constraint);
}
static const struct weston_pointer_grab_interface
confined_pointer_grab_interface = {
confined_pointer_grab_pointer_focus,
confined_pointer_grab_pointer_motion,
confined_pointer_grab_pointer_button,
confined_pointer_grab_pointer_axis,
confined_pointer_grab_pointer_axis_source,
confined_pointer_grab_pointer_frame,
confined_pointer_grab_pointer_cancel,
};
static void
confined_pointer_destroy(struct wl_client *client,
struct wl_resource *resource)
{
wl_resource_destroy(resource);
}
static void
confined_pointer_set_region(struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *region_resource)
{
struct weston_pointer_constraint *constraint =
wl_resource_get_user_data(resource);
struct weston_region *region = region_resource ?
wl_resource_get_user_data(region_resource) : NULL;
if (!constraint)
return;
if (region) {
pixman_region32_copy(&constraint->region_pending,
&region->region);
} else {
pixman_region32_fini(&constraint->region_pending);
region_init_infinite(&constraint->region_pending);
}
constraint->region_is_pending = true;
}
static const struct zwp_confined_pointer_v1_interface confined_pointer_interface = {
confined_pointer_destroy,
confined_pointer_set_region,
};
static void
pointer_constraints_confine_pointer(struct wl_client *client,
struct wl_resource *resource,
uint32_t id,
struct wl_resource *surface_resource,
struct wl_resource *pointer_resource,
struct wl_resource *region_resource,
uint32_t lifetime)
{
struct weston_surface *surface =
wl_resource_get_user_data(surface_resource);
struct weston_pointer *pointer = wl_resource_get_user_data(pointer_resource);
struct weston_region *region = region_resource ?
wl_resource_get_user_data(region_resource) : NULL;
init_pointer_constraint(resource, id, surface, pointer, region, lifetime,
&zwp_confined_pointer_v1_interface,
&confined_pointer_interface,
&confined_pointer_grab_interface);
}
static const struct zwp_pointer_constraints_v1_interface pointer_constraints_interface = {
pointer_constraints_destroy,
pointer_constraints_lock_pointer,
pointer_constraints_confine_pointer,
};
static void
bind_pointer_constraints(struct wl_client *client, void *data,
uint32_t version, uint32_t id)
{
struct wl_resource *resource;
resource = wl_resource_create(client,
&zwp_pointer_constraints_v1_interface,
1, id);
wl_resource_set_implementation(resource, &pointer_constraints_interface,
NULL, NULL);
}
static void
input_timestamps_destroy(struct wl_client *client,
struct wl_resource *resource)
{
wl_resource_destroy(resource);
}
static const struct zwp_input_timestamps_v1_interface
input_timestamps_interface = {
input_timestamps_destroy,
};
static void
input_timestamps_manager_destroy(struct wl_client *client,
struct wl_resource *resource)
{
wl_resource_destroy(resource);
}
static void
input_timestamps_manager_get_keyboard_timestamps(struct wl_client *client,
struct wl_resource *resource,
uint32_t id,
struct wl_resource *keyboard_resource)
{
struct weston_keyboard *keyboard =
wl_resource_get_user_data(keyboard_resource);
struct wl_resource *input_ts;
input_ts = wl_resource_create(client,
&zwp_input_timestamps_v1_interface,
1, id);
if (!input_ts) {
wl_client_post_no_memory(client);
return;
}
if (keyboard) {
wl_list_insert(&keyboard->timestamps_list,
wl_resource_get_link(input_ts));
} else {
wl_list_init(wl_resource_get_link(input_ts));
}
wl_resource_set_implementation(input_ts,
&input_timestamps_interface,
keyboard_resource,
unbind_resource);
}
static void
input_timestamps_manager_get_pointer_timestamps(struct wl_client *client,
struct wl_resource *resource,
uint32_t id,
struct wl_resource *pointer_resource)
{
struct weston_pointer *pointer =
wl_resource_get_user_data(pointer_resource);
struct wl_resource *input_ts;
input_ts = wl_resource_create(client,
&zwp_input_timestamps_v1_interface,
1, id);
if (!input_ts) {
wl_client_post_no_memory(client);
return;
}
if (pointer) {
wl_list_insert(&pointer->timestamps_list,
wl_resource_get_link(input_ts));
} else {
wl_list_init(wl_resource_get_link(input_ts));
}
wl_resource_set_implementation(input_ts,
&input_timestamps_interface,
pointer_resource,
unbind_resource);
}
static void
input_timestamps_manager_get_touch_timestamps(struct wl_client *client,
struct wl_resource *resource,
uint32_t id,
struct wl_resource *touch_resource)
{
struct weston_touch *touch = wl_resource_get_user_data(touch_resource);
struct wl_resource *input_ts;
input_ts = wl_resource_create(client,
&zwp_input_timestamps_v1_interface,
1, id);
if (!input_ts) {
wl_client_post_no_memory(client);
return;
}
if (touch) {
wl_list_insert(&touch->timestamps_list,
wl_resource_get_link(input_ts));
} else {
wl_list_init(wl_resource_get_link(input_ts));
}
wl_resource_set_implementation(input_ts,
&input_timestamps_interface,
touch_resource,
unbind_resource);
}
static const struct zwp_input_timestamps_manager_v1_interface
input_timestamps_manager_interface = {
input_timestamps_manager_destroy,
input_timestamps_manager_get_keyboard_timestamps,
input_timestamps_manager_get_pointer_timestamps,
input_timestamps_manager_get_touch_timestamps,
};
static void
bind_input_timestamps_manager(struct wl_client *client, void *data,
uint32_t version, uint32_t id)
{
struct wl_resource *resource =
wl_resource_create(client,
&zwp_input_timestamps_manager_v1_interface,
1, id);
if (resource == NULL) {
wl_client_post_no_memory(client);
return;
}
wl_resource_set_implementation(resource,
&input_timestamps_manager_interface,
NULL, NULL);
}
int
weston_input_init(struct weston_compositor *compositor)
{
if (!wl_global_create(compositor->wl_display,
&zwp_relative_pointer_manager_v1_interface, 1,
compositor, bind_relative_pointer_manager))
return -1;
if (!wl_global_create(compositor->wl_display,
&zwp_pointer_constraints_v1_interface, 1,
NULL, bind_pointer_constraints))
return -1;
if (!wl_global_create(compositor->wl_display,
&zwp_input_timestamps_manager_v1_interface, 1,
NULL, bind_input_timestamps_manager))
return -1;
return 0;
}