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mutter/src/wayland/meta-wayland-pointer.c

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/*
* Wayland Support
*
* Copyright (C) 2013 Intel Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* Copyright © 2008 Kristian Høgsberg
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting documentation, and
* that the name of the copyright holders not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. The copyright holders make no representations
* about the suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
/* The file is based on src/input.c from Weston */
#include "config.h"
#include <clutter/clutter.h>
#include <linux/input.h>
#include "meta-wayland-pointer.h"
#include "meta-wayland-private.h"
#include "meta-cursor.h"
#include "meta-cursor-tracker-private.h"
#include "meta-surface-actor-wayland.h"
#include <string.h>
#define DEFAULT_AXIS_STEP_DISTANCE wl_fixed_from_int (10)
static void meta_wayland_pointer_end_popup_grab (MetaWaylandPointer *pointer);
static void
unbind_resource (struct wl_resource *resource)
{
wl_list_remove (wl_resource_get_link (resource));
}
static void
set_cursor_surface (MetaWaylandPointer *pointer,
MetaWaylandSurface *surface)
{
if (pointer->cursor_surface == surface)
return;
if (pointer->cursor_surface)
wl_list_remove (&pointer->cursor_surface_destroy_listener.link);
pointer->cursor_surface = surface;
if (pointer->cursor_surface)
wl_resource_add_destroy_listener (pointer->cursor_surface->resource,
&pointer->cursor_surface_destroy_listener);
}
static void
pointer_handle_cursor_surface_destroy (struct wl_listener *listener, void *data)
{
MetaWaylandPointer *pointer = wl_container_of (listener, pointer, cursor_surface_destroy_listener);
set_cursor_surface (pointer, NULL);
meta_wayland_pointer_update_cursor_surface (pointer);
}
static void
pointer_handle_focus_surface_destroy (struct wl_listener *listener, void *data)
{
MetaWaylandPointer *pointer = wl_container_of (listener, pointer, focus_surface_listener);
meta_wayland_pointer_set_focus (pointer, NULL);
}
static void
default_grab_focus (MetaWaylandPointerGrab *grab,
MetaWaylandSurface *surface)
{
MetaWaylandPointer *pointer = grab->pointer;
if (pointer->button_count > 0)
return;
meta_wayland_pointer_set_focus (pointer, surface);
}
static void
default_grab_motion (MetaWaylandPointerGrab *grab,
const ClutterEvent *event)
{
MetaWaylandPointer *pointer = grab->pointer;
struct wl_resource *resource;
struct wl_list *l;
l = &pointer->focus_resource_list;
wl_resource_for_each(resource, l)
{
wl_fixed_t sx, sy;
meta_wayland_pointer_get_relative_coordinates (pointer,
pointer->focus_surface,
&sx, &sy);
wl_pointer_send_motion (resource, clutter_event_get_time (event), sx, sy);
}
}
static void
default_grab_button (MetaWaylandPointerGrab *grab,
const ClutterEvent *event)
{
MetaWaylandPointer *pointer = grab->pointer;
struct wl_resource *resource;
struct wl_list *l;
ClutterEventType event_type;
event_type = clutter_event_type (event);
l = &grab->pointer->focus_resource_list;
wl_resource_for_each(resource, l)
{
struct wl_client *client = wl_resource_get_client (pointer->focus_surface->resource);
struct wl_display *display = wl_client_get_display (client);
uint32_t button;
uint32_t serial;
button = clutter_event_get_button (event);
switch (button)
{
/* The evdev input right and middle button numbers are swapped
relative to how Clutter numbers them */
case 2:
button = BTN_MIDDLE;
break;
case 3:
button = BTN_RIGHT;
break;
default:
button = button + BTN_LEFT - 1;
break;
}
serial = wl_display_next_serial (display);
wl_pointer_send_button (resource, serial,
clutter_event_get_time (event), button,
event_type == CLUTTER_BUTTON_PRESS ? 1 : 0);
}
if (pointer->button_count == 0 && event_type == CLUTTER_BUTTON_RELEASE)
meta_wayland_pointer_set_focus (pointer, pointer->current);
}
static const MetaWaylandPointerGrabInterface default_pointer_grab_interface = {
default_grab_focus,
default_grab_motion,
default_grab_button
};
void
meta_wayland_pointer_init (MetaWaylandPointer *pointer,
struct wl_display *display)
{
ClutterDeviceManager *manager;
memset (pointer, 0, sizeof *pointer);
pointer->display = display;
wl_list_init (&pointer->resource_list);
wl_list_init (&pointer->focus_resource_list);
pointer->focus_surface_listener.notify = pointer_handle_focus_surface_destroy;
pointer->cursor_surface = NULL;
pointer->cursor_surface_destroy_listener.notify = pointer_handle_cursor_surface_destroy;
pointer->hotspot_x = 16;
pointer->hotspot_y = 16;
pointer->default_grab.interface = &default_pointer_grab_interface;
pointer->default_grab.pointer = pointer;
pointer->grab = &pointer->default_grab;
manager = clutter_device_manager_get_default ();
pointer->device = clutter_device_manager_get_core_device (manager, CLUTTER_POINTER_DEVICE);
}
void
meta_wayland_pointer_release (MetaWaylandPointer *pointer)
{
set_cursor_surface (pointer, NULL);
}
static int
count_buttons (const ClutterEvent *event)
{
static gint maskmap[5] =
{
CLUTTER_BUTTON1_MASK, CLUTTER_BUTTON2_MASK, CLUTTER_BUTTON3_MASK,
CLUTTER_BUTTON4_MASK, CLUTTER_BUTTON5_MASK
};
ClutterModifierType mod_mask;
int i, count;
mod_mask = clutter_event_get_state (event);
count = 0;
for (i = 0; i < 5; i++)
{
if (mod_mask & maskmap[i])
count++;
}
return count;
}
static void
sync_focus_surface (MetaWaylandPointer *pointer)
{
MetaDisplay *display = meta_get_display ();
MetaWaylandSurface *focus_surface;
/* Don't update the focus surface while we have a move/resize grab. */
if (meta_grab_op_is_moving_or_resizing (display->grab_op))
return;
if (meta_grab_op_should_block_wayland (display->grab_op))
focus_surface = NULL;
else
focus_surface = pointer->current;
if (focus_surface != pointer->focus_surface)
{
const MetaWaylandPointerGrabInterface *interface = pointer->grab->interface;
interface->focus (pointer->grab, focus_surface);
}
}
static void
repick_for_event (MetaWaylandPointer *pointer,
const ClutterEvent *for_event)
{
ClutterActor *actor = NULL;
if (for_event)
{
actor = clutter_event_get_source (for_event);
}
else
{
ClutterStage *stage = clutter_input_device_get_pointer_stage (pointer->device);
if (stage)
{
ClutterPoint pos;
clutter_input_device_get_coords (pointer->device, NULL, &pos);
actor = clutter_stage_get_actor_at_pos (stage, CLUTTER_PICK_REACTIVE,
pos.x, pos.y);
}
}
if (META_IS_SURFACE_ACTOR_WAYLAND (actor))
pointer->current = meta_surface_actor_wayland_get_surface (META_SURFACE_ACTOR_WAYLAND (actor));
else
pointer->current = NULL;
if (pointer->cursor_tracker && pointer->current == NULL)
meta_cursor_tracker_unset_window_cursor (pointer->cursor_tracker);
sync_focus_surface (pointer);
}
void
meta_wayland_pointer_update (MetaWaylandPointer *pointer,
const ClutterEvent *event)
{
pointer->button_count = count_buttons (event);
repick_for_event (pointer, event);
if (pointer->cursor_tracker)
{
ClutterPoint pos;
clutter_input_device_get_coords (pointer->device, NULL, &pos);
meta_cursor_tracker_update_position (pointer->cursor_tracker, pos.x, pos.y);
}
}
static void
notify_motion (MetaWaylandPointer *pointer,
const ClutterEvent *event)
{
pointer->grab->interface->motion (pointer->grab, event);
}
static void
handle_motion_event (MetaWaylandPointer *pointer,
const ClutterEvent *event)
{
notify_motion (pointer, event);
}
static void
handle_button_event (MetaWaylandPointer *pointer,
const ClutterEvent *event)
{
gboolean implicit_grab;
notify_motion (pointer, event);
implicit_grab = (event->type == CLUTTER_BUTTON_PRESS) && (pointer->button_count == 1);
if (implicit_grab)
{
pointer->grab_button = clutter_event_get_button (event);
pointer->grab_time = clutter_event_get_time (event);
clutter_event_get_coords (event, &pointer->grab_x, &pointer->grab_y);
}
pointer->grab->interface->button (pointer->grab, event);
if (implicit_grab)
pointer->grab_serial = wl_display_get_serial (pointer->display);
}
static void
handle_scroll_event (MetaWaylandPointer *pointer,
const ClutterEvent *event)
{
struct wl_resource *resource;
struct wl_list *l;
wl_fixed_t x_value = 0, y_value = 0;
notify_motion (pointer, event);
if (clutter_event_is_pointer_emulated (event))
return;
switch (clutter_event_get_scroll_direction (event))
{
case CLUTTER_SCROLL_UP:
y_value = -DEFAULT_AXIS_STEP_DISTANCE;
break;
case CLUTTER_SCROLL_DOWN:
y_value = DEFAULT_AXIS_STEP_DISTANCE;
break;
case CLUTTER_SCROLL_LEFT:
x_value = -DEFAULT_AXIS_STEP_DISTANCE;
break;
case CLUTTER_SCROLL_RIGHT:
x_value = DEFAULT_AXIS_STEP_DISTANCE;
break;
case CLUTTER_SCROLL_SMOOTH:
{
double dx, dy;
clutter_event_get_scroll_delta (event, &dx, &dy);
x_value = wl_fixed_from_double (dx);
y_value = wl_fixed_from_double (dy);
}
break;
default:
return;
}
l = &pointer->focus_resource_list;
wl_resource_for_each (resource, l)
{
if (x_value)
wl_pointer_send_axis (resource, clutter_event_get_time (event),
WL_POINTER_AXIS_HORIZONTAL_SCROLL, x_value);
if (y_value)
wl_pointer_send_axis (resource, clutter_event_get_time (event),
WL_POINTER_AXIS_VERTICAL_SCROLL, y_value);
}
}
gboolean
meta_wayland_pointer_handle_event (MetaWaylandPointer *pointer,
const ClutterEvent *event)
{
switch (event->type)
{
case CLUTTER_MOTION:
handle_motion_event (pointer, event);
break;
case CLUTTER_BUTTON_PRESS:
case CLUTTER_BUTTON_RELEASE:
handle_button_event (pointer, event);
break;
case CLUTTER_SCROLL:
handle_scroll_event (pointer, event);
break;
default:
break;
}
return FALSE;
}
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));
}
}
}
void
meta_wayland_pointer_set_focus (MetaWaylandPointer *pointer,
MetaWaylandSurface *surface)
{
if (pointer->focus_surface == surface && !wl_list_empty (&pointer->focus_resource_list))
return;
if (pointer->focus_surface)
{
struct wl_resource *resource;
struct wl_list *l;
l = &pointer->focus_resource_list;
if (!wl_list_empty (l))
{
struct wl_client *client = wl_resource_get_client (pointer->focus_surface->resource);
struct wl_display *display = wl_client_get_display (client);
uint32_t serial = wl_display_next_serial (display);
wl_resource_for_each (resource, l)
{
wl_pointer_send_leave (resource, serial, pointer->focus_surface->resource);
}
move_resources (&pointer->resource_list, &pointer->focus_resource_list);
}
wl_list_remove (&pointer->focus_surface_listener.link);
pointer->focus_surface = NULL;
}
if (surface != NULL)
{
struct wl_resource *resource;
struct wl_list *l;
ClutterPoint pos;
pointer->focus_surface = surface;
wl_resource_add_destroy_listener (pointer->focus_surface->resource, &pointer->focus_surface_listener);
clutter_input_device_get_coords (pointer->device, NULL, &pos);
meta_window_handle_enter (pointer->focus_surface->window,
/* XXX -- can we reliably get a timestamp for setting focus? */
clutter_get_current_event_time (),
pos.x, pos.y);
move_resources_for_client (&pointer->focus_resource_list,
&pointer->resource_list,
wl_resource_get_client (pointer->focus_surface->resource));
l = &pointer->focus_resource_list;
if (!wl_list_empty (l))
{
struct wl_client *client = wl_resource_get_client (pointer->focus_surface->resource);
struct wl_display *display = wl_client_get_display (client);
uint32_t serial = wl_display_next_serial (display);
wl_resource_for_each (resource, l)
{
wl_fixed_t sx, sy;
meta_wayland_pointer_get_relative_coordinates (pointer, pointer->focus_surface, &sx, &sy);
wl_pointer_send_enter (resource, serial, pointer->focus_surface->resource, sx, sy);
}
pointer->focus_serial = serial;
}
}
}
void
meta_wayland_pointer_start_grab (MetaWaylandPointer *pointer,
MetaWaylandPointerGrab *grab)
{
const MetaWaylandPointerGrabInterface *interface;
pointer->grab = grab;
interface = pointer->grab->interface;
grab->pointer = pointer;
if (pointer->current)
interface->focus (pointer->grab, pointer->current);
}
void
meta_wayland_pointer_end_grab (MetaWaylandPointer *pointer)
{
const MetaWaylandPointerGrabInterface *interface;
pointer->grab = &pointer->default_grab;
interface = pointer->grab->interface;
interface->focus (pointer->grab, pointer->current);
}
typedef struct {
MetaWaylandPointerGrab generic;
struct wl_client *grab_client;
struct wl_list all_popups;
} MetaWaylandPopupGrab;
typedef struct {
MetaWaylandPopupGrab *grab;
MetaWaylandSurface *surface;
struct wl_listener surface_destroy_listener;
struct wl_list link;
} MetaWaylandPopup;
static void
popup_grab_focus (MetaWaylandPointerGrab *grab,
MetaWaylandSurface *surface)
{
MetaWaylandPopupGrab *popup_grab = (MetaWaylandPopupGrab*)grab;
/* Popup grabs are in owner-events mode (ie, events for the same client
are reported as normal) */
if (surface && wl_resource_get_client (surface->resource) == popup_grab->grab_client)
meta_wayland_pointer_set_focus (grab->pointer, surface);
else
meta_wayland_pointer_set_focus (grab->pointer, NULL);
}
static void
popup_grab_motion (MetaWaylandPointerGrab *grab,
const ClutterEvent *event)
{
default_grab_motion (grab, event);
}
static void
popup_grab_button (MetaWaylandPointerGrab *grab,
const ClutterEvent *event)
{
MetaWaylandPointer *pointer = grab->pointer;
if (pointer->focus_surface)
default_grab_button (grab, event);
else if (clutter_event_type (event) == CLUTTER_BUTTON_RELEASE &&
pointer->button_count == 0)
meta_wayland_pointer_end_popup_grab (grab->pointer);
}
static MetaWaylandPointerGrabInterface popup_grab_interface = {
popup_grab_focus,
popup_grab_motion,
popup_grab_button
};
static void
meta_wayland_pointer_end_popup_grab (MetaWaylandPointer *pointer)
{
MetaWaylandPopupGrab *popup_grab;
MetaWaylandPopup *popup, *tmp;
popup_grab = (MetaWaylandPopupGrab*)pointer->grab;
g_assert (popup_grab->generic.interface == &popup_grab_interface);
wl_list_for_each_safe (popup, tmp, &popup_grab->all_popups, link)
{
meta_wayland_surface_popup_done (popup->surface);
wl_list_remove (&popup->surface_destroy_listener.link);
wl_list_remove (&popup->link);
g_slice_free (MetaWaylandPopup, popup);
}
{
MetaDisplay *display = meta_get_display ();
meta_display_end_grab_op (display,
meta_display_get_current_time_roundtrip (display));
}
meta_wayland_pointer_end_grab (pointer);
g_slice_free (MetaWaylandPopupGrab, popup_grab);
}
static void
on_popup_surface_destroy (struct wl_listener *listener,
void *data)
{
MetaWaylandPopup *popup =
wl_container_of (listener, popup, surface_destroy_listener);
MetaWaylandPopupGrab *popup_grab = popup->grab;
wl_list_remove (&popup->link);
g_slice_free (MetaWaylandPopup, popup);
if (wl_list_empty (&popup_grab->all_popups))
meta_wayland_pointer_end_popup_grab (popup_grab->generic.pointer);
}
gboolean
meta_wayland_pointer_start_popup_grab (MetaWaylandPointer *pointer,
MetaWaylandSurface *surface)
{
MetaWaylandPopupGrab *grab;
MetaWaylandPopup *popup;
if (pointer->grab != &pointer->default_grab)
{
if (pointer->grab->interface != &popup_grab_interface)
return FALSE;
grab = (MetaWaylandPopupGrab*)pointer->grab;
if (wl_resource_get_client (surface->resource) != grab->grab_client)
return FALSE;
}
if (pointer->grab == &pointer->default_grab)
{
MetaWindow *window = surface->window;
grab = g_slice_new0 (MetaWaylandPopupGrab);
grab->generic.interface = &popup_grab_interface;
grab->generic.pointer = pointer;
grab->grab_client = wl_resource_get_client (surface->resource);
wl_list_init (&grab->all_popups);
meta_wayland_pointer_start_grab (pointer, (MetaWaylandPointerGrab*)grab);
meta_display_begin_grab_op (window->display,
window->screen,
window,
META_GRAB_OP_WAYLAND_POPUP,
FALSE, /* pointer_already_grabbed */
FALSE, /* frame_action */
1, /* button. XXX? */
0, /* modmask */
meta_display_get_current_time_roundtrip (window->display),
pointer->grab_x,
pointer->grab_y);
}
else
grab = (MetaWaylandPopupGrab*)pointer->grab;
popup = g_slice_new0 (MetaWaylandPopup);
popup->grab = grab;
popup->surface = surface;
popup->surface_destroy_listener.notify = on_popup_surface_destroy;
if (surface->xdg_popup.resource)
wl_resource_add_destroy_listener (surface->xdg_popup.resource, &popup->surface_destroy_listener);
else if (surface->wl_shell_surface.resource)
wl_resource_add_destroy_listener (surface->wl_shell_surface.resource, &popup->surface_destroy_listener);
wl_list_insert (&grab->all_popups, &popup->link);
return TRUE;
}
void
meta_wayland_pointer_repick (MetaWaylandPointer *pointer)
{
repick_for_event (pointer, NULL);
}
void
meta_wayland_pointer_get_relative_coordinates (MetaWaylandPointer *pointer,
MetaWaylandSurface *surface,
wl_fixed_t *sx,
wl_fixed_t *sy)
{
float xf = 0.0f, yf = 0.0f;
ClutterActor *actor = CLUTTER_ACTOR (surface->surface_actor);
if (actor)
{
ClutterPoint pos;
clutter_input_device_get_coords (pointer->device, NULL, &pos);
clutter_actor_transform_stage_point (actor, pos.x, pos.y, &xf, &yf);
}
*sx = wl_fixed_from_double (xf);
*sy = wl_fixed_from_double (yf);
}
void
meta_wayland_pointer_update_cursor_surface (MetaWaylandPointer *pointer)
{
MetaCursorReference *cursor;
if (pointer->cursor_tracker == NULL)
return;
if (pointer->cursor_surface && pointer->cursor_surface->buffer)
{
struct wl_resource *buffer = pointer->cursor_surface->buffer->resource;
cursor = meta_cursor_reference_from_buffer (buffer,
pointer->hotspot_x,
pointer->hotspot_y);
}
else
cursor = NULL;
meta_cursor_tracker_set_window_cursor (pointer->cursor_tracker, cursor);
if (cursor)
meta_cursor_reference_unref (cursor);
}
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)
{
MetaWaylandPointer *pointer = wl_resource_get_user_data (resource);
MetaWaylandSurface *surface;
surface = (surface_resource ? wl_resource_get_user_data (surface_resource) : NULL);
if (pointer->focus_surface == NULL)
return;
if (wl_resource_get_client (pointer->focus_surface->resource) != client)
return;
if (pointer->focus_serial - serial > G_MAXUINT32 / 2)
return;
pointer->hotspot_x = x;
pointer->hotspot_y = y;
set_cursor_surface (pointer, surface);
meta_wayland_pointer_update_cursor_surface (pointer);
}
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,
};
void
meta_wayland_pointer_create_new_resource (MetaWaylandPointer *pointer,
struct wl_client *client,
struct wl_resource *seat_resource,
uint32_t id)
{
struct wl_resource *cr;
cr = wl_resource_create (client, &wl_pointer_interface,
MIN (META_WL_POINTER_VERSION, wl_resource_get_version (seat_resource)), id);
wl_resource_set_implementation (cr, &pointer_interface, pointer, unbind_resource);
wl_list_insert (&pointer->resource_list, wl_resource_get_link (cr));
if (pointer->focus_surface && wl_resource_get_client (pointer->focus_surface->resource) == client)
meta_wayland_pointer_set_focus (pointer, pointer->focus_surface);
}
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