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2f3a5f2001
The current surface refers to the surface right below the pointer (according to the pick performed by clutter), while the focus surface is the one receiving events. They can be out of sync in case of grabs, in which case we should keep trying to focus the current surface. https://bugzilla.gnome.org/show_bug.cgi?id=706077
540 lines
15 KiB
C
540 lines
15 KiB
C
/*
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* Wayland Support
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*
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* Copyright (C) 2013 Intel Corporation
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*/
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#include "config.h"
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#include <cogl/cogl-wayland-server.h>
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#include <clutter/clutter.h>
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#include <clutter/wayland/clutter-wayland-compositor.h>
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#include <clutter/wayland/clutter-wayland-surface.h>
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#include <linux/input.h>
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#include <stdlib.h>
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#include <string.h>
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#include "meta-wayland-seat.h"
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#include "meta-wayland-private.h"
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#include "meta-wayland-keyboard.h"
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#include "meta-wayland-pointer.h"
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#include "meta-wayland-data-device.h"
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#include "meta-window-actor-private.h"
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#include "meta/meta-shaped-texture.h"
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#include "meta-wayland-stage.h"
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#define DEFAULT_AXIS_STEP_DISTANCE wl_fixed_from_int (10)
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static void
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unbind_resource (struct wl_resource *resource)
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{
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wl_list_remove (wl_resource_get_link (resource));
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}
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static void
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transform_stage_point_fixed (MetaWaylandSurface *surface,
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wl_fixed_t x,
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wl_fixed_t y,
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wl_fixed_t *sx,
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wl_fixed_t *sy)
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{
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float xf = 0.0f, yf = 0.0f;
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if (surface->window)
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{
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ClutterActor *actor =
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CLUTTER_ACTOR (meta_window_get_compositor_private (surface->window));
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if (actor)
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clutter_actor_transform_stage_point (actor,
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wl_fixed_to_double (x),
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wl_fixed_to_double (y),
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&xf, &yf);
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}
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*sx = wl_fixed_from_double (xf);
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*sy = wl_fixed_from_double (yf);
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}
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static void
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pointer_unmap_sprite (MetaWaylandSeat *seat)
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{
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if (seat->current_stage)
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{
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MetaWaylandStage *stage = META_WAYLAND_STAGE (seat->current_stage);
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meta_wayland_stage_set_invisible_cursor (stage);
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}
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if (seat->sprite)
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{
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wl_list_remove (&seat->sprite_destroy_listener.link);
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seat->sprite = NULL;
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}
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}
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void
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meta_wayland_seat_update_sprite (MetaWaylandSeat *seat)
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{
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if (seat->current_stage)
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{
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MetaWaylandStage *stage = META_WAYLAND_STAGE (seat->current_stage);
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ClutterBackend *backend = clutter_get_default_backend ();
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CoglContext *context = clutter_backend_get_cogl_context (backend);
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struct wl_resource *buffer = seat->sprite->buffer_ref.buffer->resource;
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CoglTexture2D *texture =
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cogl_wayland_texture_2d_new_from_buffer (context, buffer, NULL);
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meta_wayland_stage_set_cursor_from_texture (stage,
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COGL_TEXTURE (texture),
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seat->hotspot_x,
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seat->hotspot_y);
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cogl_object_unref (texture);
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}
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}
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static void
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pointer_set_cursor (struct wl_client *client,
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struct wl_resource *resource,
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uint32_t serial,
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struct wl_resource *surface_resource,
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int32_t x, int32_t y)
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{
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MetaWaylandSeat *seat = wl_resource_get_user_data (resource);
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MetaWaylandSurface *surface;
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surface = (surface_resource ?
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wl_resource_get_user_data (surface_resource) :
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NULL);
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if (seat->pointer.focus == NULL)
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return;
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if (wl_resource_get_client (seat->pointer.focus->resource) != client)
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return;
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if (seat->pointer.focus_serial - serial > G_MAXUINT32 / 2)
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return;
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seat->hotspot_x = x;
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seat->hotspot_y = y;
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if (seat->sprite != surface)
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{
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pointer_unmap_sprite (seat);
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if (!surface)
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return;
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wl_resource_add_destroy_listener (surface->resource,
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&seat->sprite_destroy_listener);
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seat->sprite = surface;
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if (seat->sprite->buffer_ref.buffer)
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meta_wayland_seat_update_sprite (seat);
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}
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}
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static const struct wl_pointer_interface
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pointer_interface =
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{
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pointer_set_cursor
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};
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static void
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seat_get_pointer (struct wl_client *client,
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struct wl_resource *resource,
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uint32_t id)
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{
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MetaWaylandSeat *seat = wl_resource_get_user_data (resource);
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struct wl_resource *cr;
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cr = wl_client_add_object (client, &wl_pointer_interface,
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&pointer_interface, id, seat);
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wl_list_insert (&seat->pointer.resource_list, wl_resource_get_link (cr));
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wl_resource_set_destructor (cr, unbind_resource);
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if (seat->pointer.focus &&
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wl_resource_get_client (seat->pointer.focus->resource) == client)
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{
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MetaWaylandSurface *surface;
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wl_fixed_t sx, sy;
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surface = (MetaWaylandSurface *) seat->pointer.focus;
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transform_stage_point_fixed (surface,
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seat->pointer.x,
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seat->pointer.y,
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&sx, &sy);
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meta_wayland_pointer_set_focus (&seat->pointer,
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seat->pointer.focus,
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sx, sy);
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}
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}
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static void
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seat_get_keyboard (struct wl_client *client,
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struct wl_resource *resource,
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uint32_t id)
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{
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MetaWaylandSeat *seat = wl_resource_get_user_data (resource);
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struct wl_resource *cr;
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cr = wl_client_add_object (client, &wl_keyboard_interface, NULL, id, seat);
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wl_list_insert (&seat->keyboard.resource_list, wl_resource_get_link (cr));
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wl_resource_set_destructor (cr, unbind_resource);
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wl_keyboard_send_keymap (cr,
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WL_KEYBOARD_KEYMAP_FORMAT_XKB_V1,
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seat->keyboard.xkb_info.keymap_fd,
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seat->keyboard.xkb_info.keymap_size);
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if (seat->keyboard.focus &&
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wl_resource_get_client (seat->keyboard.focus->resource) == client)
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{
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meta_wayland_keyboard_set_focus (&seat->keyboard,
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seat->keyboard.focus);
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meta_wayland_data_device_set_keyboard_focus (seat);
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}
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}
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static void
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seat_get_touch (struct wl_client *client,
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struct wl_resource *resource,
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uint32_t id)
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{
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/* Touch not supported */
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}
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static const struct wl_seat_interface
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seat_interface =
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{
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seat_get_pointer,
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seat_get_keyboard,
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seat_get_touch
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};
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static void
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bind_seat (struct wl_client *client,
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void *data,
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guint32 version,
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guint32 id)
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{
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MetaWaylandSeat *seat = data;
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struct wl_resource *resource;
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resource = wl_client_add_object (client,
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&wl_seat_interface,
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&seat_interface,
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id,
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data);
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wl_list_insert (&seat->base_resource_list, wl_resource_get_link (resource));
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wl_resource_set_destructor (resource, unbind_resource);
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wl_seat_send_capabilities (resource,
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WL_SEAT_CAPABILITY_POINTER |
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WL_SEAT_CAPABILITY_KEYBOARD);
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}
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static void
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pointer_handle_sprite_destroy (struct wl_listener *listener, void *data)
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{
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MetaWaylandSeat *seat =
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wl_container_of (listener, seat, sprite_destroy_listener);
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pointer_unmap_sprite (seat);
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}
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MetaWaylandSeat *
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meta_wayland_seat_new (struct wl_display *display)
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{
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MetaWaylandSeat *seat = g_new0 (MetaWaylandSeat, 1);
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wl_signal_init (&seat->destroy_signal);
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seat->selection_data_source = NULL;
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wl_list_init (&seat->base_resource_list);
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wl_signal_init (&seat->selection_signal);
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wl_list_init (&seat->drag_resource_list);
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wl_signal_init (&seat->drag_icon_signal);
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meta_wayland_pointer_init (&seat->pointer);
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meta_wayland_keyboard_init (&seat->keyboard, display);
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seat->display = display;
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seat->current_stage = 0;
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seat->sprite = NULL;
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seat->sprite_destroy_listener.notify = pointer_handle_sprite_destroy;
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seat->hotspot_x = 16;
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seat->hotspot_y = 16;
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wl_display_add_global (display, &wl_seat_interface, seat, bind_seat);
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return seat;
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}
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static void
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notify_motion (MetaWaylandSeat *seat,
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const ClutterEvent *event)
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{
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MetaWaylandPointer *pointer = &seat->pointer;
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float x, y;
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clutter_event_get_coords (event, &x, &y);
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pointer->x = wl_fixed_from_double (x);
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pointer->y = wl_fixed_from_double (y);
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meta_wayland_seat_repick (seat,
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clutter_event_get_time (event),
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clutter_event_get_source (event));
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pointer->grab->interface->motion (pointer->grab,
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clutter_event_get_time (event),
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pointer->grab->x,
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pointer->grab->y);
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}
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static void
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handle_motion_event (MetaWaylandSeat *seat,
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const ClutterMotionEvent *event)
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{
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notify_motion (seat, (const ClutterEvent *) event);
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}
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static void
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handle_button_event (MetaWaylandSeat *seat,
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const ClutterButtonEvent *event)
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{
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MetaWaylandPointer *pointer = &seat->pointer;
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gboolean state = event->type == CLUTTER_BUTTON_PRESS;
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uint32_t button;
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notify_motion (seat, (const ClutterEvent *) event);
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switch (event->button)
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{
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/* The evdev input right and middle button numbers are swapped
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relative to how Clutter numbers them */
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case 2:
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button = BTN_MIDDLE;
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break;
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case 3:
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button = BTN_RIGHT;
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break;
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default:
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button = event->button + BTN_LEFT - 1;
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break;
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}
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if (state)
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{
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if (pointer->button_count == 0)
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{
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MetaWaylandSurface *surface = pointer->current;
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pointer->grab_button = button;
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pointer->grab_time = event->time;
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pointer->grab_x = pointer->x;
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pointer->grab_y = pointer->y;
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if (button == BTN_LEFT &&
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surface &&
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surface->window &&
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surface->window->client_type == META_WINDOW_CLIENT_TYPE_WAYLAND)
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{
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meta_window_raise (surface->window);
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}
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}
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pointer->button_count++;
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}
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else
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pointer->button_count--;
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pointer->grab->interface->button (pointer->grab, event->time, button, state);
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if (pointer->button_count == 1)
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pointer->grab_serial = wl_display_get_serial (seat->display);
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}
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static void
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handle_scroll_event (MetaWaylandSeat *seat,
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const ClutterScrollEvent *event)
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{
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enum wl_pointer_axis axis;
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wl_fixed_t value;
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notify_motion (seat, (const ClutterEvent *) event);
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switch (event->direction)
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{
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case CLUTTER_SCROLL_UP:
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axis = WL_POINTER_AXIS_VERTICAL_SCROLL;
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value = -DEFAULT_AXIS_STEP_DISTANCE;
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break;
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case CLUTTER_SCROLL_DOWN:
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axis = WL_POINTER_AXIS_VERTICAL_SCROLL;
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value = DEFAULT_AXIS_STEP_DISTANCE;
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break;
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case CLUTTER_SCROLL_LEFT:
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axis = WL_POINTER_AXIS_HORIZONTAL_SCROLL;
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value = -DEFAULT_AXIS_STEP_DISTANCE;
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break;
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case CLUTTER_SCROLL_RIGHT:
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axis = WL_POINTER_AXIS_HORIZONTAL_SCROLL;
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value = DEFAULT_AXIS_STEP_DISTANCE;
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break;
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default:
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return;
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}
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if (seat->pointer.focus_resource)
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wl_pointer_send_axis (seat->pointer.focus_resource,
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event->time,
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axis,
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value);
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}
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void
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meta_wayland_seat_handle_event (MetaWaylandSeat *seat,
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const ClutterEvent *event)
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{
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switch (event->type)
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{
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case CLUTTER_MOTION:
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handle_motion_event (seat,
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(const ClutterMotionEvent *) event);
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break;
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case CLUTTER_BUTTON_PRESS:
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case CLUTTER_BUTTON_RELEASE:
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handle_button_event (seat,
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(const ClutterButtonEvent *) event);
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break;
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case CLUTTER_KEY_PRESS:
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case CLUTTER_KEY_RELEASE:
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meta_wayland_keyboard_handle_event (&seat->keyboard,
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(const ClutterKeyEvent *) event);
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break;
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case CLUTTER_SCROLL:
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handle_scroll_event (seat, (const ClutterScrollEvent *) event);
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break;
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default:
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break;
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}
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}
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static void
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update_pointer_position_for_actor (MetaWaylandPointer *pointer,
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ClutterActor *actor)
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{
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float ax, ay;
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clutter_actor_transform_stage_point (actor,
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wl_fixed_to_double (pointer->x),
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wl_fixed_to_double (pointer->y),
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&ax, &ay);
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pointer->current_x = wl_fixed_from_double (ax);
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pointer->current_y = wl_fixed_from_double (ay);
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}
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/* The actor argument can be NULL in which case a Clutter pick will be
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performed to determine the right actor. An actor should only be
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passed if the repick is being performed due to an event in which
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case Clutter will have already performed a pick so we can avoid
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redundantly doing another one */
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void
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meta_wayland_seat_repick (MetaWaylandSeat *seat,
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uint32_t time,
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ClutterActor *actor)
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{
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MetaWaylandPointer *pointer = &seat->pointer;
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MetaWaylandSurface *surface = NULL;
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if (actor == NULL && seat->current_stage)
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{
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ClutterStage *stage = CLUTTER_STAGE (seat->current_stage);
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actor = clutter_stage_get_actor_at_pos (stage,
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CLUTTER_PICK_REACTIVE,
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wl_fixed_to_double (pointer->x),
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wl_fixed_to_double (pointer->y));
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}
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if (actor)
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seat->current_stage = clutter_actor_get_stage (actor);
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else
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seat->current_stage = NULL;
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if (META_IS_WINDOW_ACTOR (actor))
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{
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MetaWindow *window =
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meta_window_actor_get_meta_window (META_WINDOW_ACTOR (actor));
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update_pointer_position_for_actor (pointer, actor);
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surface = window->surface;
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}
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else if (META_IS_SHAPED_TEXTURE (actor))
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{
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MetaShapedTexture *shaped_texture = META_SHAPED_TEXTURE (actor);
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update_pointer_position_for_actor (pointer, actor);
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surface = meta_shaped_texture_get_wayland_surface (shaped_texture);
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}
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pointer->current = surface;
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if (surface != pointer->focus)
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{
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const MetaWaylandPointerGrabInterface *interface =
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pointer->grab->interface;
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interface->focus (pointer->grab,
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surface,
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pointer->current_x, pointer->current_y);
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}
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if (pointer->grab->focus)
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transform_stage_point_fixed (pointer->grab->focus,
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pointer->x,
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pointer->y,
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&pointer->grab->x,
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&pointer->grab->y);
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}
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void
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meta_wayland_seat_free (MetaWaylandSeat *seat)
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{
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pointer_unmap_sprite (seat);
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meta_wayland_pointer_release (&seat->pointer);
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meta_wayland_keyboard_release (&seat->keyboard);
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wl_signal_emit (&seat->destroy_signal, seat);
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g_slice_free (MetaWaylandSeat, seat);
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}
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