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mutter/src/wayland/meta-wayland-surface.c
Jasper St. Pierre 83aca0b53d window-actor: Split into two subclasses of MetaSurfaceActor 
The rendering logic before was somewhat complex. We had three independent
cases to take into account when doing rendering:

  * X11 compositor. In this case, we're a traditional X11 compositor,
    not a Wayland compositor. We use XCompositeNameWindowPixmap to get
    the backing pixmap for the window, and deal with the COMPOSITE
    extension messiness.

    In this case, meta_is_wayland_compositor() is FALSE.

  * Wayland clients. In this case, we're a Wayland compositor managing
    Wayland surfaces. The rendering for this is fairly straightforward,
    as Cogl handles most of the complexity with EGL and SHM buffers...
    Wayland clients give us the input and opaque regions through
    wl_surface.

    In this case, meta_is_wayland_compositor() is TRUE and
    priv->window->client_type == META_WINDOW_CLIENT_TYPE_WAYLAND.

  * XWayland clients. In this case, we're a Wayland compositor, like
    above, and XWayland hands us Wayland surfaces. XWayland handles
    the COMPOSITE extension messiness for us, and hands us a buffer
    like any other Wayland client. We have to fetch the input and
    opaque regions from the X11 window ourselves.

    In this case, meta_is_wayland_compositor() is TRUE and
    priv->window->client_type == META_WINDOW_CLIENT_TYPE_X11.

We now split the rendering logic into two subclasses, which are:

  * MetaSurfaceActorX11, which handles the X11 compositor case, in that
    it uses XCompositeNameWindowPixmap to get the backing pixmap, and
    deal with all the COMPOSITE extension messiness.

  * MetaSurfaceActorWayland, which handles the Wayland compositor case
    for both native Wayland clients and XWayland clients. XWayland handles
    COMPOSITE for us, and handles pushing a surface over through the
    xf86-video-wayland DDX.

Frame sync is still in MetaWindowActor, as it needs to work for both the
X11 compositor and XWayland client cases. When Wayland's video display
protocol lands, this will need to be significantly overhauled, as it would
have to work for any wl_surface, including subsurfaces, so we would need
surface-level discretion.

https://bugzilla.gnome.org/show_bug.cgi?id=720631
2014-02-20 14:44:31 -05:00

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/*
* Wayland Support
*
* Copyright (C) 2012,2013 Intel Corporation
* 2013 Red Hat, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#include <config.h>
#include <clutter/clutter.h>
#include <clutter/wayland/clutter-wayland-compositor.h>
#include <clutter/wayland/clutter-wayland-surface.h>
#include <cogl/cogl-wayland-server.h>
#include <glib.h>
#include <sys/time.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <stdlib.h>
#include <sys/wait.h>
#include <fcntl.h>
#include <unistd.h>
#include <wayland-server.h>
#include "gtk-shell-server-protocol.h"
#include "xdg-shell-server-protocol.h"
#include "meta-wayland-private.h"
#include "meta-xwayland-private.h"
#include "meta-wayland-stage.h"
#include "meta-wayland-seat.h"
#include "meta-wayland-keyboard.h"
#include "meta-wayland-pointer.h"
#include "meta-wayland-data-device.h"
#include "meta-cursor-tracker-private.h"
#include "display-private.h"
#include "window-private.h"
#include <meta/types.h>
#include <meta/main.h>
#include "frame.h"
#include "meta-idle-monitor-private.h"
#include "monitor-private.h"
#include "meta-surface-actor.h"
#include "meta-surface-actor-wayland.h"
typedef enum
{
META_WAYLAND_SUBSURFACE_PLACEMENT_ABOVE,
META_WAYLAND_SUBSURFACE_PLACEMENT_BELOW
} MetaWaylandSubsurfacePlacement;
typedef struct
{
MetaWaylandSubsurfacePlacement placement;
MetaWaylandSurface *sibling;
struct wl_listener sibling_destroy_listener;
} MetaWaylandSubsurfacePlacementOp;
static void
surface_handle_buffer_destroy (struct wl_listener *listener, void *data)
{
MetaWaylandSurface *surface = wl_container_of (listener, surface, buffer_destroy_listener);
wl_resource_post_error (surface->resource, WL_DISPLAY_ERROR_INVALID_OBJECT,
"Destroyed buffer while it was attached to the surface");
surface->buffer = NULL;
wl_list_remove (&surface->buffer_destroy_listener.link);
}
static void
surface_set_buffer (MetaWaylandSurface *surface,
MetaWaylandBuffer *buffer)
{
if (surface->buffer == buffer)
return;
if (surface->buffer)
{
meta_wayland_buffer_unref (surface->buffer);
wl_list_remove (&surface->buffer_destroy_listener.link);
}
surface->buffer = buffer;
if (surface->buffer)
{
meta_wayland_buffer_ref (surface->buffer);
wl_signal_add (&surface->buffer->destroy_signal, &surface->buffer_destroy_listener);
}
}
static void
surface_process_damage (MetaWaylandSurface *surface,
cairo_region_t *region)
{
int i, n_rectangles = cairo_region_num_rectangles (region);
for (i = 0; i < n_rectangles; i++)
{
cairo_rectangle_int_t rect;
cairo_region_get_rectangle (region, i, &rect);
meta_surface_actor_process_damage (surface->surface_actor,
rect.x, rect.y, rect.width, rect.height);
}
}
static void
meta_wayland_surface_destroy (struct wl_client *client,
struct wl_resource *resource)
{
wl_resource_destroy (resource);
}
static void
meta_wayland_surface_attach (struct wl_client *client,
struct wl_resource *surface_resource,
struct wl_resource *buffer_resource,
gint32 dx, gint32 dy)
{
MetaWaylandSurface *surface =
wl_resource_get_user_data (surface_resource);
MetaWaylandBuffer *buffer;
/* X11 unmanaged window */
if (!surface)
return;
if (buffer_resource)
buffer = meta_wayland_buffer_from_resource (buffer_resource);
else
buffer = NULL;
/* Attach without commit in between does not send wl_buffer.release */
if (surface->pending.buffer)
wl_list_remove (&surface->pending.buffer_destroy_listener.link);
surface->pending.dx = dx;
surface->pending.dy = dy;
surface->pending.buffer = buffer;
surface->pending.newly_attached = TRUE;
if (buffer)
wl_signal_add (&buffer->destroy_signal,
&surface->pending.buffer_destroy_listener);
}
static void
meta_wayland_surface_damage (struct wl_client *client,
struct wl_resource *surface_resource,
gint32 x,
gint32 y,
gint32 width,
gint32 height)
{
MetaWaylandSurface *surface = wl_resource_get_user_data (surface_resource);
cairo_rectangle_int_t rectangle = { x, y, width, height };
/* X11 unmanaged window */
if (!surface)
return;
cairo_region_union_rectangle (surface->pending.damage, &rectangle);
}
static void
destroy_frame_callback (struct wl_resource *callback_resource)
{
MetaWaylandFrameCallback *callback =
wl_resource_get_user_data (callback_resource);
wl_list_remove (&callback->link);
g_slice_free (MetaWaylandFrameCallback, callback);
}
static void
meta_wayland_surface_frame (struct wl_client *client,
struct wl_resource *surface_resource,
guint32 callback_id)
{
MetaWaylandFrameCallback *callback;
MetaWaylandSurface *surface = wl_resource_get_user_data (surface_resource);
/* X11 unmanaged window */
if (!surface)
return;
callback = g_slice_new0 (MetaWaylandFrameCallback);
callback->compositor = surface->compositor;
callback->resource = wl_resource_create (client, &wl_callback_interface, META_WL_CALLBACK_VERSION, callback_id);
wl_resource_set_implementation (callback->resource, NULL, callback, destroy_frame_callback);
wl_list_insert (surface->pending.frame_callback_list.prev, &callback->link);
}
static void
meta_wayland_surface_set_opaque_region (struct wl_client *client,
struct wl_resource *surface_resource,
struct wl_resource *region_resource)
{
MetaWaylandSurface *surface = wl_resource_get_user_data (surface_resource);
/* X11 unmanaged window */
if (!surface)
return;
g_clear_pointer (&surface->pending.opaque_region, cairo_region_destroy);
if (region_resource)
{
MetaWaylandRegion *region = wl_resource_get_user_data (region_resource);
surface->pending.opaque_region = cairo_region_copy (region->region);
}
}
static void
meta_wayland_surface_set_input_region (struct wl_client *client,
struct wl_resource *surface_resource,
struct wl_resource *region_resource)
{
MetaWaylandSurface *surface = wl_resource_get_user_data (surface_resource);
/* X11 unmanaged window */
if (!surface)
return;
g_clear_pointer (&surface->pending.input_region, cairo_region_destroy);
if (region_resource)
{
MetaWaylandRegion *region = wl_resource_get_user_data (region_resource);
surface->pending.input_region = cairo_region_copy (region->region);
}
}
static void
empty_region (cairo_region_t *region)
{
cairo_rectangle_int_t rectangle = { 0, 0, 0, 0 };
cairo_region_intersect_rectangle (region, &rectangle);
}
static void
ensure_buffer_texture (MetaWaylandBuffer *buffer)
{
CoglContext *ctx = clutter_backend_get_cogl_context (clutter_get_default_backend ());
CoglError *catch_error = NULL;
CoglTexture *texture;
if (!buffer)
return;
texture = COGL_TEXTURE (cogl_wayland_texture_2d_new_from_buffer (ctx,
buffer->resource,
&catch_error));
if (!texture)
{
cogl_error_free (catch_error);
meta_warning ("Could not import pending buffer, ignoring commit\n");
return;
}
buffer->texture = texture;
}
static void
cursor_surface_commit (MetaWaylandSurface *surface,
MetaWaylandDoubleBufferedState *pending,
gboolean buffer_changed)
{
if (buffer_changed)
meta_wayland_seat_update_cursor_surface (surface->compositor->seat);
}
static void
actor_surface_commit (MetaWaylandSurface *surface,
MetaWaylandDoubleBufferedState *pending,
gboolean buffer_changed)
{
MetaSurfaceActor *surface_actor = surface->surface_actor;
MetaWaylandBuffer *buffer = pending->buffer;
if (buffer_changed)
{
ensure_buffer_texture (buffer);
meta_surface_actor_wayland_set_buffer (META_SURFACE_ACTOR_WAYLAND (surface->surface_actor), buffer);
}
surface_process_damage (surface, pending->damage);
if (pending->opaque_region)
meta_surface_actor_set_opaque_region (surface_actor, pending->opaque_region);
if (pending->input_region)
meta_surface_actor_set_input_region (surface_actor, pending->input_region);
}
static void
toplevel_surface_commit (MetaWaylandSurface *surface,
MetaWaylandDoubleBufferedState *pending,
gboolean buffer_changed)
{
actor_surface_commit (surface, pending, buffer_changed);
if (buffer_changed)
{
MetaWindow *window = surface->window;
MetaWaylandBuffer *buffer = pending->buffer;
meta_window_set_surface_mapped (window, buffer != NULL);
/* We resize X based surfaces according to X events */
if (buffer != NULL && window->client_type == META_WINDOW_CLIENT_TYPE_WAYLAND)
{
int new_width, new_height;
new_width = cogl_texture_get_width (buffer->texture);
new_height = cogl_texture_get_height (buffer->texture);
if (new_width != window->rect.width ||
new_height != window->rect.height ||
pending->dx != 0 ||
pending->dy != 0)
meta_window_move_resize_wayland (window, new_width, new_height, pending->dx, pending->dy);
}
}
if (pending->frame_extents_changed)
meta_window_set_custom_frame_extents (surface->window, &pending->frame_extents);
if (pending->maximized.changed)
{
if (pending->maximized.value)
meta_window_maximize (surface->window, META_MAXIMIZE_HORIZONTAL | META_MAXIMIZE_VERTICAL);
else
meta_window_unmaximize (surface->window, META_MAXIMIZE_HORIZONTAL | META_MAXIMIZE_VERTICAL);
}
if (pending->fullscreen.changed)
{
if (pending->fullscreen.value)
meta_window_make_fullscreen (surface->window);
else
meta_window_unmake_fullscreen (surface->window);
}
}
static void
surface_handle_pending_buffer_destroy (struct wl_listener *listener, void *data)
{
MetaWaylandDoubleBufferedState *state =
wl_container_of (listener, state, buffer_destroy_listener);
state->buffer = NULL;
}
static void
double_buffered_state_init (MetaWaylandDoubleBufferedState *state)
{
state->newly_attached = FALSE;
state->buffer = NULL;
state->dx = 0;
state->dy = 0;
state->damage = cairo_region_create ();
state->buffer_destroy_listener.notify =
surface_handle_pending_buffer_destroy;
wl_list_init (&state->frame_callback_list);
state->frame_extents_changed = FALSE;
state->maximized.changed = FALSE;
state->fullscreen.changed = FALSE;
}
static void
double_buffered_state_destroy (MetaWaylandDoubleBufferedState *state)
{
MetaWaylandFrameCallback *cb, *next;
g_clear_pointer (&state->damage, cairo_region_destroy);
g_clear_pointer (&state->input_region, cairo_region_destroy);
g_clear_pointer (&state->opaque_region, cairo_region_destroy);
if (state->buffer)
wl_list_remove (&state->buffer_destroy_listener.link);
wl_list_for_each_safe (cb, next, &state->frame_callback_list, link)
wl_resource_destroy (cb->resource);
}
static void
double_buffered_state_reset (MetaWaylandDoubleBufferedState *state)
{
double_buffered_state_destroy (state);
double_buffered_state_init (state);
}
static void
move_double_buffered_state (MetaWaylandDoubleBufferedState *from,
MetaWaylandDoubleBufferedState *to)
{
if (from->buffer)
wl_list_remove (&from->buffer_destroy_listener.link);
to->newly_attached = from->newly_attached;
from->newly_attached = FALSE;
to->buffer = from->buffer;
from->buffer = NULL;
if (to->buffer)
wl_signal_add (&to->buffer->destroy_signal, &to->buffer_destroy_listener);
to->dx = from->dx;
to->dy = from->dy;
from->dx = from->dy = 0;
empty_region (to->damage);
cairo_region_union (to->damage, from->damage);
empty_region (from->damage);
g_clear_pointer (&to->input_region, cairo_region_destroy);
g_clear_pointer (&to->opaque_region, cairo_region_destroy);
to->input_region = from->input_region;
to->opaque_region = from->opaque_region;
from->input_region = from->opaque_region = NULL;
wl_list_init (&to->frame_callback_list);
wl_list_insert_list (&to->frame_callback_list, &from->frame_callback_list);
wl_list_init (&from->frame_callback_list);
}
static void
subsurface_surface_commit (MetaWaylandSurface *surface,
MetaWaylandDoubleBufferedState *pending,
gboolean buffer_changed)
{
/*
* If the sub-surface is in synchronous mode, post-pone the commit of its
* state until the sub-surface parent commits.
*
* This is done by moving the various states (damage, input region, buffer
* etc.) from the buffered state pending commit to the sub-surface's pending
* buffered state.
*
* The sub-surface's pending buffered state will be committed to the
* associated surface when its parent surface is committed, or if the user
* issues a wl_subsurface.set_desync request.
*/
if (surface->sub.synchronous)
{
move_double_buffered_state (pending, &surface->sub.pending_surface_state);
}
else
{
actor_surface_commit (surface, pending, buffer_changed);
if (buffer_changed)
{
MetaSurfaceActor *surface_actor = surface->surface_actor;
MetaWaylandBuffer *buffer = pending->buffer;
float x, y;
if (buffer != NULL)
clutter_actor_show (CLUTTER_ACTOR (surface_actor));
else
clutter_actor_hide (CLUTTER_ACTOR (surface_actor));
clutter_actor_get_position (CLUTTER_ACTOR (surface_actor), &x, &y);
x += pending->dx;
y += pending->dy;
clutter_actor_set_position (CLUTTER_ACTOR (surface_actor), x, y);
}
}
}
static void
subsurface_parent_surface_committed (MetaWaylandSurface *surface);
static void
parent_surface_committed (gpointer data, gpointer user_data)
{
subsurface_parent_surface_committed (data);
}
static void
commit_double_buffered_state (MetaWaylandSurface *surface,
MetaWaylandDoubleBufferedState *pending)
{
MetaWaylandCompositor *compositor = surface->compositor;
gboolean buffer_changed = FALSE;
/* wl_surface.attach */
if (pending->newly_attached && surface->buffer != pending->buffer)
{
surface_set_buffer (surface, pending->buffer);
buffer_changed = TRUE;
}
if (surface == compositor->seat->cursor_surface)
cursor_surface_commit (surface, pending, buffer_changed);
else if (surface->window)
toplevel_surface_commit (surface, pending, buffer_changed);
else if (surface->subsurface.resource)
subsurface_surface_commit (surface, pending, buffer_changed);
g_list_foreach (surface->subsurfaces,
parent_surface_committed,
NULL);
if (pending->buffer)
{
wl_list_remove (&pending->buffer_destroy_listener.link);
pending->buffer = NULL;
}
/* wl_surface.frame */
wl_list_insert_list (&compositor->frame_callbacks, &pending->frame_callback_list);
wl_list_init (&pending->frame_callback_list);
double_buffered_state_reset (pending);
}
static void
meta_wayland_surface_commit (struct wl_client *client,
struct wl_resource *resource)
{
MetaWaylandSurface *surface = wl_resource_get_user_data (resource);
/* X11 unmanaged window */
if (!surface)
return;
commit_double_buffered_state (surface, &surface->pending);
}
static void
meta_wayland_surface_set_buffer_transform (struct wl_client *client,
struct wl_resource *resource,
int32_t transform)
{
g_warning ("TODO: support set_buffer_transform request");
}
static void
meta_wayland_surface_set_buffer_scale (struct wl_client *client,
struct wl_resource *resource,
int scale)
{
if (scale != 1)
g_warning ("TODO: support set_buffer_scale request");
}
const struct wl_surface_interface meta_wayland_surface_interface = {
meta_wayland_surface_destroy,
meta_wayland_surface_attach,
meta_wayland_surface_damage,
meta_wayland_surface_frame,
meta_wayland_surface_set_opaque_region,
meta_wayland_surface_set_input_region,
meta_wayland_surface_commit,
meta_wayland_surface_set_buffer_transform,
meta_wayland_surface_set_buffer_scale
};
static void
unparent_actor (MetaWaylandSurface *surface)
{
ClutterActor *parent_actor;
parent_actor = clutter_actor_get_parent (CLUTTER_ACTOR (surface->surface_actor));
clutter_actor_remove_child (parent_actor, CLUTTER_ACTOR (surface->surface_actor));
}
void
meta_wayland_surface_window_unmanaged (MetaWaylandSurface *surface)
{
/* The window is being unmanaged. Unparent our surface actor
* before the window actor is destroyed, as we need to hold
* onto it... */
unparent_actor (surface);
surface->window = NULL;
}
static void
destroy_window (MetaWaylandSurface *surface)
{
if (surface->window)
{
MetaDisplay *display = meta_get_display ();
guint32 timestamp = meta_display_get_current_time_roundtrip (display);
meta_window_unmanage (surface->window, timestamp);
}
g_assert (surface->window == NULL);
}
static void
wl_surface_destructor (struct wl_resource *resource)
{
MetaWaylandSurface *surface = wl_resource_get_user_data (resource);
MetaWaylandCompositor *compositor = surface->compositor;
/* If we still have a window at the time of destruction, that means that
* the client is disconnecting, as the resources are destroyed in a random
* order. Simply destroy the window in this case. */
if (surface->window)
destroy_window (surface);
compositor->surfaces = g_list_remove (compositor->surfaces, surface);
surface_set_buffer (surface, NULL);
double_buffered_state_destroy (&surface->pending);
g_object_unref (surface->surface_actor);
if (surface->resource)
wl_resource_set_user_data (surface->resource, NULL);
g_slice_free (MetaWaylandSurface, surface);
meta_wayland_compositor_repick (compositor);
}
MetaWaylandSurface *
meta_wayland_surface_create (MetaWaylandCompositor *compositor,
struct wl_client *client,
guint32 id,
guint32 version)
{
MetaWaylandSurface *surface = g_slice_new0 (MetaWaylandSurface);
surface->compositor = compositor;
surface->resource = wl_resource_create (client, &wl_surface_interface, version, id);
wl_resource_set_implementation (surface->resource, &meta_wayland_surface_interface, surface, wl_surface_destructor);
surface->buffer_destroy_listener.notify = surface_handle_buffer_destroy;
surface->surface_actor = g_object_ref_sink (meta_surface_actor_wayland_new (surface));
clutter_actor_set_reactive (CLUTTER_ACTOR (surface->surface_actor), TRUE);
double_buffered_state_init (&surface->pending);
return surface;
}
static void
destroy_surface_extension (MetaWaylandSurfaceExtension *extension)
{
wl_list_remove (&extension->surface_destroy_listener.link);
extension->resource = NULL;
}
static void
extension_handle_surface_destroy (struct wl_listener *listener,
void *data)
{
MetaWaylandSurfaceExtension *extension = wl_container_of (listener, extension, surface_destroy_listener);
wl_resource_destroy (extension->resource);
}
static int
get_resource_version (struct wl_resource *master_resource,
int max_version)
{
return MIN (max_version, wl_resource_get_version (master_resource));
}
static gboolean
create_surface_extension (MetaWaylandSurfaceExtension *extension,
struct wl_client *client,
struct wl_resource *master_resource,
struct wl_resource *surface_resource,
guint32 id,
int max_version,
const struct wl_interface *interface,
const void *implementation,
wl_resource_destroy_func_t destructor)
{
if (extension->resource != NULL)
return FALSE;
extension->resource = wl_resource_create (client, interface, get_resource_version (master_resource, max_version), id);
wl_resource_set_implementation (extension->resource, implementation, extension, destructor);
extension->surface_destroy_listener.notify = extension_handle_surface_destroy;
wl_resource_add_destroy_listener (surface_resource, &extension->surface_destroy_listener);
return TRUE;
}
static void
xdg_shell_use_unstable_version (struct wl_client *client,
struct wl_resource *resource,
int32_t version)
{
if (version != XDG_SHELL_VERSION_CURRENT)
g_warning ("Bad xdg_shell version: %d", version);
}
static void
xdg_shell_pong (struct wl_client *client,
struct wl_resource *resource,
uint32_t serial)
{
MetaDisplay *display = meta_get_display ();
meta_display_pong_for_serial (display, serial);
}
static void
xdg_surface_destructor (struct wl_resource *resource)
{
MetaWaylandSurfaceExtension *xdg_surface = wl_resource_get_user_data (resource);
MetaWaylandSurface *surface = wl_container_of (xdg_surface, surface, xdg_surface);
destroy_window (surface);
destroy_surface_extension (xdg_surface);
}
static void
xdg_surface_destroy (struct wl_client *client,
struct wl_resource *resource)
{
wl_resource_destroy (resource);
}
static void
xdg_surface_set_transient_for (struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *parent_resource)
{
MetaWaylandSurfaceExtension *xdg_surface = wl_resource_get_user_data (resource);
MetaWaylandSurface *surface = wl_container_of (xdg_surface, surface, xdg_surface);
MetaWindow *transient_for = NULL;
if (parent_resource)
{
MetaWaylandSurface *parent_surface = wl_resource_get_user_data (parent_resource);
transient_for = parent_surface->window;
}
meta_window_set_transient_for (surface->window, transient_for);
}
static void
xdg_surface_set_margin (struct wl_client *client,
struct wl_resource *resource,
int32_t left_margin,
int32_t right_margin,
int32_t top_margin,
int32_t bottom_margin)
{
MetaWaylandSurfaceExtension *xdg_surface = wl_resource_get_user_data (resource);
MetaWaylandSurface *surface = wl_container_of (xdg_surface, surface, xdg_surface);
surface->pending.frame_extents_changed = TRUE;
surface->pending.frame_extents.left = left_margin;
surface->pending.frame_extents.right = right_margin;
surface->pending.frame_extents.top = top_margin;
surface->pending.frame_extents.bottom = bottom_margin;
}
static void
xdg_surface_set_title (struct wl_client *client,
struct wl_resource *resource,
const char *title)
{
MetaWaylandSurfaceExtension *xdg_surface = wl_resource_get_user_data (resource);
MetaWaylandSurface *surface = wl_container_of (xdg_surface, surface, xdg_surface);
meta_window_set_title (surface->window, title);
}
static void
xdg_surface_set_app_id (struct wl_client *client,
struct wl_resource *resource,
const char *app_id)
{
MetaWaylandSurfaceExtension *xdg_surface = wl_resource_get_user_data (resource);
MetaWaylandSurface *surface = wl_container_of (xdg_surface, surface, xdg_surface);
meta_window_set_wm_class (surface->window, app_id, app_id);
}
static gboolean
begin_grab_op_on_surface (MetaWaylandSurface *surface,
MetaWaylandSeat *seat,
MetaGrabOp grab_op)
{
MetaWindow *window = surface->window;
if (grab_op == META_GRAB_OP_NONE)
return FALSE;
return meta_display_begin_grab_op (window->display,
window->screen,
window,
grab_op,
TRUE, /* pointer_already_grabbed */
FALSE, /* frame_action */
1, /* button. XXX? */
0, /* modmask */
meta_display_get_current_time_roundtrip (window->display),
wl_fixed_to_int (seat->pointer.grab_x),
wl_fixed_to_int (seat->pointer.grab_y));
}
static void
xdg_surface_move (struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *seat_resource,
guint32 serial)
{
MetaWaylandSeat *seat = wl_resource_get_user_data (seat_resource);
MetaWaylandSurfaceExtension *xdg_surface = wl_resource_get_user_data (resource);
MetaWaylandSurface *surface = wl_container_of (xdg_surface, surface, xdg_surface);
if (seat->pointer.button_count == 0 ||
seat->pointer.grab_serial != serial ||
seat->pointer.focus_surface != surface)
return;
begin_grab_op_on_surface (surface, seat, META_GRAB_OP_MOVING);
}
static MetaGrabOp
grab_op_for_edge (int edge)
{
switch (edge)
{
case XDG_SURFACE_RESIZE_EDGE_TOP_LEFT:
return META_GRAB_OP_RESIZING_NW;
case XDG_SURFACE_RESIZE_EDGE_TOP:
return META_GRAB_OP_RESIZING_N;
case XDG_SURFACE_RESIZE_EDGE_TOP_RIGHT:
return META_GRAB_OP_RESIZING_NE;
case XDG_SURFACE_RESIZE_EDGE_RIGHT:
return META_GRAB_OP_RESIZING_E;
case XDG_SURFACE_RESIZE_EDGE_BOTTOM_RIGHT:
return META_GRAB_OP_RESIZING_SE;
case XDG_SURFACE_RESIZE_EDGE_BOTTOM:
return META_GRAB_OP_RESIZING_S;
case XDG_SURFACE_RESIZE_EDGE_BOTTOM_LEFT:
return META_GRAB_OP_RESIZING_SW;
case XDG_SURFACE_RESIZE_EDGE_LEFT:
return META_GRAB_OP_RESIZING_W;
default:
g_warning ("invalid edge: %d", edge);
return META_GRAB_OP_NONE;
}
}
static void
xdg_surface_resize (struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *seat_resource,
guint32 serial,
guint32 edges)
{
MetaWaylandSeat *seat = wl_resource_get_user_data (seat_resource);
MetaWaylandSurfaceExtension *xdg_surface = wl_resource_get_user_data (resource);
MetaWaylandSurface *surface = wl_container_of (xdg_surface, surface, xdg_surface);
if (seat->pointer.button_count == 0 ||
seat->pointer.grab_serial != serial ||
seat->pointer.focus_surface != surface)
return;
begin_grab_op_on_surface (surface, seat, grab_op_for_edge (edges));
}
static void
xdg_surface_set_output (struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *output)
{
g_warning ("TODO: support xdg_surface.set_output");
}
static void
xdg_surface_set_fullscreen (struct wl_client *client,
struct wl_resource *resource)
{
MetaWaylandSurfaceExtension *xdg_surface = wl_resource_get_user_data (resource);
MetaWaylandSurface *surface = wl_container_of (xdg_surface, surface, xdg_surface);
surface->pending.fullscreen.changed = TRUE;
surface->pending.fullscreen.value = TRUE;
}
static void
xdg_surface_unset_fullscreen (struct wl_client *client,
struct wl_resource *resource)
{
MetaWaylandSurfaceExtension *xdg_surface = wl_resource_get_user_data (resource);
MetaWaylandSurface *surface = wl_container_of (xdg_surface, surface, xdg_surface);
surface->pending.fullscreen.changed = TRUE;
surface->pending.fullscreen.value = FALSE;
}
static void
xdg_surface_set_maximized (struct wl_client *client,
struct wl_resource *resource)
{
MetaWaylandSurfaceExtension *xdg_surface = wl_resource_get_user_data (resource);
MetaWaylandSurface *surface = wl_container_of (xdg_surface, surface, xdg_surface);
surface->pending.maximized.changed = TRUE;
surface->pending.maximized.value = TRUE;
}
static void
xdg_surface_unset_maximized (struct wl_client *client,
struct wl_resource *resource)
{
MetaWaylandSurfaceExtension *xdg_surface = wl_resource_get_user_data (resource);
MetaWaylandSurface *surface = wl_container_of (xdg_surface, surface, xdg_surface);
surface->pending.maximized.changed = TRUE;
surface->pending.maximized.value = FALSE;
}
static void
xdg_surface_set_minimized (struct wl_client *client,
struct wl_resource *resource)
{
MetaWaylandSurfaceExtension *xdg_surface = wl_resource_get_user_data (resource);
MetaWaylandSurface *surface = wl_container_of (xdg_surface, surface, xdg_surface);
meta_window_minimize (surface->window);
}
static const struct xdg_surface_interface meta_wayland_xdg_surface_interface = {
xdg_surface_destroy,
xdg_surface_set_transient_for,
xdg_surface_set_margin,
xdg_surface_set_title,
xdg_surface_set_app_id,
xdg_surface_move,
xdg_surface_resize,
xdg_surface_set_output,
xdg_surface_set_fullscreen,
xdg_surface_unset_fullscreen,
xdg_surface_set_maximized,
xdg_surface_unset_maximized,
xdg_surface_set_minimized,
};
static void
xdg_shell_get_xdg_surface (struct wl_client *client,
struct wl_resource *resource,
guint32 id,
struct wl_resource *surface_resource)
{
MetaWaylandSurface *surface = wl_resource_get_user_data (surface_resource);
if (!create_surface_extension (&surface->xdg_surface, client, surface_resource, resource, id,
META_XDG_SURFACE_VERSION,
&xdg_surface_interface,
&meta_wayland_xdg_surface_interface,
xdg_surface_destructor))
{
wl_resource_post_error (surface_resource,
WL_DISPLAY_ERROR_INVALID_OBJECT,
"xdg_shell::get_xdg_surface already requested");
return;
}
surface->window = meta_window_wayland_new (meta_get_display (), surface);
}
static void
xdg_popup_destructor (struct wl_resource *resource)
{
MetaWaylandSurfaceExtension *xdg_popup = wl_resource_get_user_data (resource);
MetaWaylandSurface *surface = wl_container_of (xdg_popup, surface, xdg_popup);
destroy_window (surface);
destroy_surface_extension (xdg_popup);
}
static void
xdg_popup_destroy (struct wl_client *client,
struct wl_resource *resource)
{
wl_resource_destroy (resource);
}
static const struct xdg_popup_interface meta_wayland_xdg_popup_interface = {
xdg_popup_destroy,
};
static void
xdg_shell_get_xdg_popup (struct wl_client *client,
struct wl_resource *resource,
uint32_t id,
struct wl_resource *surface_resource,
struct wl_resource *parent_resource,
struct wl_resource *seat_resource,
uint32_t serial,
int32_t x,
int32_t y,
uint32_t flags)
{
MetaWaylandSurface *surface = wl_resource_get_user_data (surface_resource);
MetaWaylandSurface *parent_surf = wl_resource_get_user_data (parent_resource);
MetaWaylandSeat *seat = wl_resource_get_user_data (seat_resource);
if (parent_surf == NULL || parent_surf->window == NULL)
return;
if (!create_surface_extension (&surface->xdg_popup, client, surface_resource, resource, id,
META_XDG_POPUP_VERSION,
&xdg_popup_interface,
&meta_wayland_xdg_popup_interface,
xdg_popup_destructor))
{
wl_resource_post_error (surface_resource,
WL_DISPLAY_ERROR_INVALID_OBJECT,
"xdg_shell::get_xdg_popup already requested");
return;
}
surface->window = meta_window_wayland_new (meta_get_display (), surface);
surface->window->rect.x = parent_surf->window->rect.x + x;
surface->window->rect.y = parent_surf->window->rect.y + y;
surface->window->showing_for_first_time = FALSE;
surface->window->placed = TRUE;
meta_window_set_transient_for (surface->window, parent_surf->window);
surface->window->type = META_WINDOW_DROPDOWN_MENU;
meta_window_type_changed (surface->window);
meta_wayland_pointer_start_popup_grab (&seat->pointer, surface);
}
static const struct xdg_shell_interface meta_wayland_xdg_shell_interface = {
xdg_shell_use_unstable_version,
xdg_shell_get_xdg_surface,
xdg_shell_get_xdg_popup,
xdg_shell_pong,
};
typedef struct {
struct wl_resource *resource;
struct wl_listener client_destroy_listener;
} XdgShell;
static void
xdg_shell_handle_client_destroy (struct wl_listener *listener, void *data)
{
XdgShell *xdg_shell = wl_container_of (listener, xdg_shell, client_destroy_listener);
g_slice_free (XdgShell, xdg_shell);
}
static struct wl_resource *
get_xdg_shell_for_client (struct wl_client *client)
{
struct wl_listener *listener;
XdgShell *xdg_shell;
listener = wl_client_get_destroy_listener (client, xdg_shell_handle_client_destroy);
/* No xdg_shell has been bound for this client */
if (listener == NULL)
return NULL;
xdg_shell = wl_container_of (listener, xdg_shell, client_destroy_listener);
return xdg_shell->resource;
}
static void
bind_xdg_shell (struct wl_client *client,
void *data,
guint32 version,
guint32 id)
{
struct wl_resource *resource;
XdgShell *xdg_shell;
if (version != 1)
{
g_warning ("using xdg-shell without stable version 1\n");
return;
}
xdg_shell = g_slice_new (XdgShell);
resource = wl_resource_create (client, &xdg_shell_interface, 1, id);
wl_resource_set_implementation (resource, &meta_wayland_xdg_shell_interface, data, NULL);
xdg_shell->resource = wl_resource_create (client, &xdg_shell_interface, 1, id);
wl_resource_set_implementation (xdg_shell->resource, &meta_wayland_xdg_shell_interface, data, NULL);
xdg_shell->client_destroy_listener.notify = xdg_shell_handle_client_destroy;
wl_client_add_destroy_listener (client, &xdg_shell->client_destroy_listener);
}
static void
gtk_surface_destructor (struct wl_resource *resource)
{
MetaWaylandSurfaceExtension *gtk_surface = wl_resource_get_user_data (resource);
MetaWaylandSurface *surface = wl_container_of (gtk_surface, surface, gtk_surface);
destroy_surface_extension (gtk_surface);
}
static void
set_dbus_properties (struct wl_client *client,
struct wl_resource *resource,
const char *application_id,
const char *app_menu_path,
const char *menubar_path,
const char *window_object_path,
const char *application_object_path,
const char *unique_bus_name)
{
MetaWaylandSurfaceExtension *gtk_surface = wl_resource_get_user_data (resource);
MetaWaylandSurface *surface = wl_container_of (gtk_surface, surface, gtk_surface);
/* Broken client, let it die instead of us */
if (!surface->window)
{
meta_warning ("meta-wayland-surface: set_dbus_properties called with invalid window!\n");
return;
}
meta_window_set_gtk_dbus_properties (surface->window,
application_id,
unique_bus_name,
app_menu_path,
menubar_path,
application_object_path,
window_object_path);
}
static const struct gtk_surface_interface meta_wayland_gtk_surface_interface = {
set_dbus_properties
};
static void
get_gtk_surface (struct wl_client *client,
struct wl_resource *resource,
guint32 id,
struct wl_resource *surface_resource)
{
MetaWaylandSurface *surface = wl_resource_get_user_data (surface_resource);
if (!create_surface_extension (&surface->gtk_surface, client, surface_resource, resource, id,
META_GTK_SURFACE_VERSION,
&gtk_surface_interface,
&meta_wayland_gtk_surface_interface,
gtk_surface_destructor))
{
wl_resource_post_error (surface_resource,
WL_DISPLAY_ERROR_INVALID_OBJECT,
"gtk_shell::get_gtk_surface already requested");
return;
}
}
static const struct gtk_shell_interface meta_wayland_gtk_shell_interface = {
get_gtk_surface
};
static void
bind_gtk_shell (struct wl_client *client,
void *data,
guint32 version,
guint32 id)
{
struct wl_resource *resource;
resource = wl_resource_create (client, &gtk_shell_interface,
MIN (META_GTK_SHELL_VERSION, version), id);
wl_resource_set_implementation (resource, &meta_wayland_gtk_shell_interface, data, NULL);
/* FIXME: ask the plugin */
gtk_shell_send_capabilities (resource, GTK_SHELL_CAPABILITY_GLOBAL_APP_MENU);
}
static void
subsurface_parent_surface_committed (MetaWaylandSurface *surface)
{
MetaWaylandDoubleBufferedState *pending_surface_state = &surface->sub.pending_surface_state;
if (surface->sub.pending_pos)
{
clutter_actor_set_position (CLUTTER_ACTOR (surface->surface_actor),
surface->sub.pending_x,
surface->sub.pending_y);
surface->sub.pending_pos = FALSE;
}
if (surface->sub.pending_placement_ops)
{
GSList *it;
for (it = surface->sub.pending_placement_ops; it; it = it->next)
{
MetaWaylandSubsurfacePlacementOp *op = it->data;
ClutterActor *surface_actor;
ClutterActor *parent_actor;
ClutterActor *sibling_actor;
if (!op->sibling)
{
g_slice_free (MetaWaylandSubsurfacePlacementOp, op);
continue;
}
surface_actor = CLUTTER_ACTOR (surface->surface_actor);
parent_actor = clutter_actor_get_parent (CLUTTER_ACTOR (surface->sub.parent));
sibling_actor = CLUTTER_ACTOR (op->sibling->surface_actor);
switch (op->placement)
{
case META_WAYLAND_SUBSURFACE_PLACEMENT_ABOVE:
clutter_actor_set_child_above_sibling (parent_actor, surface_actor, sibling_actor);
break;
case META_WAYLAND_SUBSURFACE_PLACEMENT_BELOW:
clutter_actor_set_child_below_sibling (parent_actor, surface_actor, sibling_actor);
break;
}
wl_list_remove (&op->sibling_destroy_listener.link);
g_slice_free (MetaWaylandSubsurfacePlacementOp, op);
}
g_slist_free (surface->sub.pending_placement_ops);
surface->sub.pending_placement_ops = NULL;
}
if (surface->sub.synchronous)
commit_double_buffered_state (surface, pending_surface_state);
double_buffered_state_reset (pending_surface_state);
}
static void
wl_subsurface_destructor (struct wl_resource *resource)
{
MetaWaylandSurfaceExtension *subsurface = wl_resource_get_user_data (resource);
MetaWaylandSurface *surface = wl_container_of (subsurface, surface, subsurface);
if (surface->sub.parent)
{
wl_list_remove (&surface->sub.parent_destroy_listener.link);
surface->sub.parent->subsurfaces =
g_list_remove (surface->sub.parent->subsurfaces, surface);
unparent_actor (surface);
surface->sub.parent = NULL;
}
double_buffered_state_destroy (&surface->sub.pending_surface_state);
destroy_surface_extension (subsurface);
}
static void
wl_subsurface_destroy (struct wl_client *client,
struct wl_resource *resource)
{
wl_resource_destroy (resource);
}
static void
wl_subsurface_set_position (struct wl_client *client,
struct wl_resource *resource,
int32_t x,
int32_t y)
{
MetaWaylandSurfaceExtension *subsurface = wl_resource_get_user_data (resource);
MetaWaylandSurface *surface = wl_container_of (subsurface, surface, subsurface);
surface->sub.pending_x = x;
surface->sub.pending_y = y;
surface->sub.pending_pos = TRUE;
}
static gboolean
is_valid_sibling (MetaWaylandSurface *surface, MetaWaylandSurface *sibling)
{
if (surface->sub.parent == sibling)
return TRUE;
if (surface->sub.parent == sibling->sub.parent)
return TRUE;
return FALSE;
}
static void
subsurface_handle_pending_sibling_destroyed (struct wl_listener *listener, void *data)
{
MetaWaylandSubsurfacePlacementOp *op =
wl_container_of (listener, op, sibling_destroy_listener);
op->sibling = NULL;
}
static void
queue_subsurface_placement (MetaWaylandSurface *surface,
MetaWaylandSurface *sibling,
MetaWaylandSubsurfacePlacement placement)
{
MetaWaylandSubsurfacePlacementOp *op =
g_slice_new (MetaWaylandSubsurfacePlacementOp);
op->placement = placement;
op->sibling = sibling;
op->sibling_destroy_listener.notify =
subsurface_handle_pending_sibling_destroyed;
wl_resource_add_destroy_listener (sibling->resource,
&op->sibling_destroy_listener);
surface->sub.pending_placement_ops =
g_slist_append (surface->sub.pending_placement_ops, op);
}
static void
wl_subsurface_place_above (struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *sibling_resource)
{
MetaWaylandSurfaceExtension *subsurface = wl_resource_get_user_data (resource);
MetaWaylandSurface *surface = wl_container_of (subsurface, surface, subsurface);
MetaWaylandSurface *sibling = wl_resource_get_user_data (sibling_resource);
if (!is_valid_sibling (surface, sibling))
{
wl_resource_post_error (resource, WL_SUBSURFACE_ERROR_BAD_SURFACE,
"wl_subsurface::place_above: wl_surface@%d is "
"not a valid parent or sibling",
wl_resource_get_id (sibling->resource));
return;
}
queue_subsurface_placement (surface,
sibling,
META_WAYLAND_SUBSURFACE_PLACEMENT_ABOVE);
}
static void
wl_subsurface_place_below (struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *sibling_resource)
{
MetaWaylandSurfaceExtension *subsurface = wl_resource_get_user_data (resource);
MetaWaylandSurface *surface = wl_container_of (subsurface, surface, subsurface);
MetaWaylandSurface *sibling = wl_resource_get_user_data (sibling_resource);
if (!is_valid_sibling (surface, sibling))
{
wl_resource_post_error (resource, WL_SUBSURFACE_ERROR_BAD_SURFACE,
"wl_subsurface::place_below: wl_surface@%d is "
"not a valid parent or sibling",
wl_resource_get_id (sibling->resource));
return;
}
queue_subsurface_placement (surface,
sibling,
META_WAYLAND_SUBSURFACE_PLACEMENT_BELOW);
}
static void
wl_subsurface_set_sync (struct wl_client *client,
struct wl_resource *resource)
{
MetaWaylandSurfaceExtension *subsurface =
wl_resource_get_user_data (resource);
MetaWaylandSurface *surface =
wl_container_of (subsurface, surface, subsurface);
surface->sub.synchronous = TRUE;
}
static void
wl_subsurface_set_desync (struct wl_client *client,
struct wl_resource *resource)
{
MetaWaylandSurfaceExtension *subsurface =
wl_resource_get_user_data (resource);
MetaWaylandSurface *surface =
wl_container_of (subsurface, surface, subsurface);
if (surface->sub.synchronous)
subsurface_parent_surface_committed (surface);
surface->sub.synchronous = FALSE;
}
static const struct wl_subsurface_interface meta_wayland_subsurface_interface = {
wl_subsurface_destroy,
wl_subsurface_set_position,
wl_subsurface_place_above,
wl_subsurface_place_below,
wl_subsurface_set_sync,
wl_subsurface_set_desync,
};
static void
wl_subcompositor_destroy (struct wl_client *client,
struct wl_resource *resource)
{
wl_resource_destroy (resource);
}
static void
surface_handle_parent_surface_destroyed (struct wl_listener *listener,
void *data)
{
MetaWaylandSurface *surface = wl_container_of (listener,
surface,
sub.parent_destroy_listener);
surface->sub.parent = NULL;
unparent_actor (surface);
}
static void
wl_subcompositor_get_subsurface (struct wl_client *client,
struct wl_resource *resource,
guint32 id,
struct wl_resource *surface_resource,
struct wl_resource *parent_resource)
{
MetaWaylandSurface *surface = wl_resource_get_user_data (surface_resource);
MetaWaylandSurface *parent = wl_resource_get_user_data (parent_resource);
if (!create_surface_extension (&surface->subsurface, client, surface_resource, resource, id,
META_GTK_SURFACE_VERSION,
&wl_subsurface_interface,
&meta_wayland_subsurface_interface,
wl_subsurface_destructor))
{
wl_resource_post_error (surface_resource,
WL_DISPLAY_ERROR_INVALID_OBJECT,
"wl_subcompositor::get_subsurface already requested");
return;
}
double_buffered_state_init (&surface->sub.pending_surface_state);
surface->sub.parent = parent;
surface->sub.parent_destroy_listener.notify =
surface_handle_parent_surface_destroyed;
wl_resource_add_destroy_listener (parent->resource,
&surface->sub.parent_destroy_listener);
parent->subsurfaces = g_list_append (parent->subsurfaces, surface);
clutter_actor_add_child (CLUTTER_ACTOR (parent->surface_actor),
CLUTTER_ACTOR (surface->surface_actor));
}
static const struct wl_subcompositor_interface meta_wayland_subcompositor_interface = {
wl_subcompositor_destroy,
wl_subcompositor_get_subsurface,
};
static void
bind_subcompositor (struct wl_client *client,
void *data,
guint32 version,
guint32 id)
{
struct wl_resource *resource;
resource = wl_resource_create (client, &wl_subcompositor_interface,
MIN (META_WL_SUBCOMPOSITOR_VERSION, version), id);
wl_resource_set_implementation (resource, &meta_wayland_subcompositor_interface, data, NULL);
}
void
meta_wayland_init_shell (MetaWaylandCompositor *compositor)
{
if (wl_global_create (compositor->wayland_display,
&xdg_shell_interface, 1,
compositor, bind_xdg_shell) == NULL)
g_error ("Failed to register a global xdg-shell object");
if (wl_global_create (compositor->wayland_display,
&gtk_shell_interface,
META_GTK_SHELL_VERSION,
compositor, bind_gtk_shell) == NULL)
g_error ("Failed to register a global gtk-shell object");
if (wl_global_create (compositor->wayland_display,
&wl_subcompositor_interface,
META_WL_SUBCOMPOSITOR_VERSION,
compositor, bind_subcompositor) == NULL)
g_error ("Failed to register a global wl-subcompositor object");
}
void
meta_wayland_surface_configure_notify (MetaWaylandSurface *surface,
int new_width,
int new_height)
{
if (surface->xdg_surface.resource)
xdg_surface_send_configure (surface->xdg_surface.resource,
new_width, new_height);
}
void
meta_wayland_surface_activated (MetaWaylandSurface *surface)
{
if (surface->xdg_surface.resource)
xdg_surface_send_activated (surface->xdg_surface.resource);
}
void
meta_wayland_surface_deactivated (MetaWaylandSurface *surface)
{
if (surface->xdg_surface.resource)
xdg_surface_send_deactivated (surface->xdg_surface.resource);
}
void
meta_wayland_surface_ping (MetaWaylandSurface *surface,
guint32 serial)
{
struct wl_client *client = wl_resource_get_client (surface->resource);
struct wl_resource *xdg_shell = get_xdg_shell_for_client (client);
if (xdg_shell == NULL)
{
g_warning ("Trying to ping a surface without an xdg_shell bound. How does this happen?");
return;
}
xdg_shell_send_ping (xdg_shell, serial);
}
void
meta_wayland_surface_delete (MetaWaylandSurface *surface)
{
if (surface->xdg_surface.resource)
xdg_surface_send_delete (surface->xdg_surface.resource);
}
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