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weston/compositor/shell.c

1372 lines
35 KiB

/*
* Copyright © 2010 Intel Corporation
* Copyright © 2011 Collabora, Ltd.
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of the copyright holders not be used in
* advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. The copyright holders make
* no representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <stdlib.h>
#include <stdio.h>
#include <stdbool.h>
#include <string.h>
#include <unistd.h>
#include <linux/input.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <fcntl.h>
#include <assert.h>
#include <wayland-server.h>
#include "compositor.h"
#include "desktop-shell-server-protocol.h"
struct wl_shell {
struct wlsc_compositor *compositor;
struct wlsc_shell shell;
struct {
struct wlsc_process process;
struct wl_client *client;
struct wl_resource *desktop_shell;
} child;
bool locked;
bool prepare_event_sent;
struct wlsc_surface *lock_surface;
struct wl_listener lock_surface_listener;
struct wl_list hidden_surface_list;
struct wl_list backgrounds;
struct wl_list panels;
};
enum shell_surface_type {
SHELL_SURFACE_NORMAL,
SHELL_SURFACE_PANEL,
SHELL_SURFACE_BACKGROUND,
SHELL_SURFACE_LOCK,
SHELL_SURFACE_TOPLEVEL,
SHELL_SURFACE_TRANSIENT,
SHELL_SURFACE_FULLSCREEN
};
struct shell_surface {
struct wlsc_surface *surface;
struct wl_listener destroy_listener;
enum shell_surface_type type;
int32_t saved_x, saved_y;
struct wlsc_output *output;
struct wl_list link;
};
struct wlsc_move_grab {
struct wl_grab grab;
struct wlsc_surface *surface;
int32_t dx, dy;
};
static void
destroy_shell_surface(struct shell_surface *priv)
{
wl_list_remove(&priv->destroy_listener.link);
wl_list_remove(&priv->link);
free(priv);
}
static void
handle_shell_surface_destroy(struct wl_listener *listener,
struct wl_resource *resource, uint32_t time)
{
struct shell_surface *priv =
container_of(listener, struct shell_surface, destroy_listener);
destroy_shell_surface(priv);
}
static struct shell_surface *
get_shell_surface(struct wlsc_surface *surface)
{
struct shell_surface *priv;
if (surface->shell_priv)
return surface->shell_priv;
priv = calloc(1, sizeof *priv);
if (!priv)
return NULL;
priv->destroy_listener.func = handle_shell_surface_destroy;
wl_list_insert(surface->surface.resource.destroy_listener_list.prev,
&priv->destroy_listener.link);
surface->shell_priv = priv;
priv->surface = surface;
/* init link so its safe to always remove it in destroy_shell_surface */
wl_list_init(&priv->link);
priv->type = SHELL_SURFACE_NORMAL;
return priv;
}
static void
move_grab_motion(struct wl_grab *grab,
uint32_t time, int32_t x, int32_t y)
{
struct wlsc_move_grab *move = (struct wlsc_move_grab *) grab;
struct wlsc_surface *es = move->surface;
wlsc_surface_configure(es, x + move->dx, y + move->dy,
es->width, es->height);
}
static void
move_grab_button(struct wl_grab *grab,
uint32_t time, int32_t button, int32_t state)
{
}
static void
move_grab_end(struct wl_grab *grab, uint32_t time)
{
free(grab);
}
static const struct wl_grab_interface move_grab_interface = {
move_grab_motion,
move_grab_button,
move_grab_end
};
static int
wlsc_surface_move(struct wlsc_surface *es,
struct wlsc_input_device *wd, uint32_t time)
{
struct wlsc_move_grab *move;
move = malloc(sizeof *move);
if (!move)
return -1;
move->grab.interface = &move_grab_interface;
move->dx = es->x - wd->input_device.grab_x;
move->dy = es->y - wd->input_device.grab_y;
move->surface = es;
if (wl_input_device_update_grab(&wd->input_device,
&move->grab, &es->surface, time) < 0)
return 0;
wlsc_input_device_set_pointer_image(wd, WLSC_POINTER_DRAGGING);
wl_input_device_set_pointer_focus(&wd->input_device,
NULL, time, 0, 0, 0, 0);
return 0;
}
static void
shell_move(struct wl_client *client, struct wl_resource *resource,
struct wl_resource *surface_resource,
struct wl_resource *input_resource, uint32_t time)
{
struct wlsc_input_device *wd = input_resource->data;
struct wlsc_surface *es = surface_resource->data;
if (wlsc_surface_move(es, wd, time) < 0)
wl_resource_post_no_memory(resource);
}
struct wlsc_resize_grab {
struct wl_grab grab;
uint32_t edges;
int32_t dx, dy, width, height;
struct wlsc_surface *surface;
struct wl_resource *resource;
};
static void
resize_grab_motion(struct wl_grab *grab,
uint32_t time, int32_t x, int32_t y)
{
struct wlsc_resize_grab *resize = (struct wlsc_resize_grab *) grab;
struct wl_input_device *device = grab->input_device;
struct wl_surface *surface = &resize->surface->surface;
int32_t width, height;
if (resize->edges & WL_SHELL_RESIZE_LEFT) {
width = device->grab_x - x + resize->width;
} else if (resize->edges & WL_SHELL_RESIZE_RIGHT) {
width = x - device->grab_x + resize->width;
} else {
width = resize->width;
}
if (resize->edges & WL_SHELL_RESIZE_TOP) {
height = device->grab_y - y + resize->height;
} else if (resize->edges & WL_SHELL_RESIZE_BOTTOM) {
height = y - device->grab_y + resize->height;
} else {
height = resize->height;
}
wl_resource_post_event(resize->resource,
WL_SHELL_CONFIGURE, time, resize->edges,
surface, width, height);
}
static void
resize_grab_button(struct wl_grab *grab,
uint32_t time, int32_t button, int32_t state)
{
}
static void
resize_grab_end(struct wl_grab *grab, uint32_t time)
{
free(grab);
}
static const struct wl_grab_interface resize_grab_interface = {
resize_grab_motion,
resize_grab_button,
resize_grab_end
};
static int
wlsc_surface_resize(struct wlsc_surface *es,
struct wlsc_input_device *wd,
uint32_t time, uint32_t edges,
struct wl_resource *resource)
{
struct wlsc_resize_grab *resize;
enum wlsc_pointer_type pointer = WLSC_POINTER_LEFT_PTR;
/* FIXME: Reject if fullscreen */
resize = malloc(sizeof *resize);
if (!resize)
return -1;
resize->grab.interface = &resize_grab_interface;
resize->edges = edges;
resize->dx = es->x - wd->input_device.grab_x;
resize->dy = es->y - wd->input_device.grab_y;
resize->width = es->width;
resize->height = es->height;
resize->surface = es;
resize->resource = resource;
if (edges == 0 || edges > 15 ||
(edges & 3) == 3 || (edges & 12) == 12)
return 0;
switch (edges) {
case WL_SHELL_RESIZE_TOP:
pointer = WLSC_POINTER_TOP;
break;
case WL_SHELL_RESIZE_BOTTOM:
pointer = WLSC_POINTER_BOTTOM;
break;
case WL_SHELL_RESIZE_LEFT:
pointer = WLSC_POINTER_LEFT;
break;
case WL_SHELL_RESIZE_TOP_LEFT:
pointer = WLSC_POINTER_TOP_LEFT;
break;
case WL_SHELL_RESIZE_BOTTOM_LEFT:
pointer = WLSC_POINTER_BOTTOM_LEFT;
break;
case WL_SHELL_RESIZE_RIGHT:
pointer = WLSC_POINTER_RIGHT;
break;
case WL_SHELL_RESIZE_TOP_RIGHT:
pointer = WLSC_POINTER_TOP_RIGHT;
break;
case WL_SHELL_RESIZE_BOTTOM_RIGHT:
pointer = WLSC_POINTER_BOTTOM_RIGHT;
break;
}
if (wl_input_device_update_grab(&wd->input_device,
&resize->grab, &es->surface, time) < 0)
return 0;
wlsc_input_device_set_pointer_image(wd, pointer);
wl_input_device_set_pointer_focus(&wd->input_device,
NULL, time, 0, 0, 0, 0);
return 0;
}
static void
shell_resize(struct wl_client *client, struct wl_resource *resource,
struct wl_resource *surface_resource,
struct wl_resource *input_resource, uint32_t time, uint32_t edges)
{
struct wlsc_input_device *wd = input_resource->data;
struct wlsc_surface *es = surface_resource->data;
/* FIXME: Reject if fullscreen */
if (wlsc_surface_resize(es, wd, time, edges, resource) < 0)
wl_resource_post_no_memory(resource);
}
static void
shell_set_toplevel(struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *surface_resource)
{
struct wlsc_surface *es = surface_resource->data;
struct shell_surface *priv;
priv = get_shell_surface(es);
if (priv->type == SHELL_SURFACE_FULLSCREEN) {
es->x = priv->saved_x;
es->y = priv->saved_y;
}
wlsc_surface_damage(es);
priv->type = SHELL_SURFACE_TOPLEVEL;
es->fullscreen_output = NULL;
}
static void
shell_set_transient(struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *surface_resource,
struct wl_resource *parent_resource,
int x, int y, uint32_t flags)
{
struct wlsc_surface *es = surface_resource->data;
struct wlsc_surface *pes = parent_resource->data;
struct shell_surface *priv;
priv = get_shell_surface(es);
/* assign to parents output */
es->output = pes->output;
es->x = pes->x + x;
es->y = pes->y + y;
wlsc_surface_damage(es);
priv->type = SHELL_SURFACE_TRANSIENT;
}
static void
shell_set_fullscreen(struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *surface_resource)
{
struct wlsc_surface *es = surface_resource->data;
struct wlsc_output *output;
struct shell_surface *priv;
priv = get_shell_surface(es);
/* FIXME: Fullscreen on first output */
/* FIXME: Handle output going away */
output = container_of(es->compositor->output_list.next,
struct wlsc_output, link);
es->output = output;
priv->saved_x = es->x;
priv->saved_y = es->y;
es->x = (output->current->width - es->width) / 2;
es->y = (output->current->height - es->height) / 2;
es->fullscreen_output = output;
wlsc_surface_damage(es);
priv->type = SHELL_SURFACE_FULLSCREEN;
}
static void
destroy_drag(struct wl_resource *resource)
{
struct wl_drag *drag =
container_of(resource, struct wl_drag, resource);
wl_list_remove(&drag->drag_focus_listener.link);
if (drag->grab.input_device)
wl_input_device_end_grab(drag->grab.input_device,
wlsc_compositor_get_time());
free(drag);
}
static void
wl_drag_set_pointer_focus(struct wl_drag *drag,
struct wl_surface *surface, uint32_t time,
int32_t x, int32_t y, int32_t sx, int32_t sy)
{
char **p, **end;
if (drag->drag_focus == surface)
return;
if (drag->drag_focus &&
(!surface ||
drag->drag_focus->resource.client != surface->resource.client))
wl_resource_post_event(&drag->drag_offer.resource,
WL_DRAG_OFFER_POINTER_FOCUS,
time, NULL, 0, 0, 0, 0);
if (surface &&
(!drag->drag_focus ||
drag->drag_focus->resource.client != surface->resource.client)) {
drag->drag_offer.resource.client = surface->resource.client;
end = drag->types.data + drag->types.size;
for (p = drag->types.data; p < end; p++)
wl_resource_post_event(&drag->drag_offer.resource,
WL_DRAG_OFFER_OFFER, *p);
}
if (surface) {
wl_resource_post_event(&drag->drag_offer.resource,
WL_DRAG_OFFER_POINTER_FOCUS,
time, surface,
x, y, sx, sy);
}
drag->drag_focus = surface;
drag->pointer_focus_time = time;
drag->target = NULL;
wl_list_remove(&drag->drag_focus_listener.link);
if (surface)
wl_list_insert(surface->resource.destroy_listener_list.prev,
&drag->drag_focus_listener.link);
}
static void
drag_offer_accept(struct wl_client *client, struct wl_resource *resource,
uint32_t time, const char *type)
{
struct wl_drag_offer *offer = resource->data;
struct wl_drag *drag = container_of(offer, struct wl_drag, drag_offer);
char **p, **end;
/* If the client responds to drag pointer_focus or motion
* events after the pointer has left the surface, we just
* discard the accept requests. The drag source just won't
* get the corresponding 'target' events and eventually the
* next surface/root will start sending events. */
if (time < drag->pointer_focus_time)
return;
drag->target = client;
drag->type = NULL;
end = drag->types.data + drag->types.size;
for (p = drag->types.data; p < end; p++)
if (type && strcmp(*p, type) == 0)
drag->type = *p;
wl_resource_post_event(&drag->resource, WL_DRAG_TARGET, drag->type);
}
static void
drag_offer_receive(struct wl_client *client,
struct wl_resource *resource, int fd)
{
struct wl_drag_offer *offer = resource->data;
struct wl_drag *drag = container_of(offer, struct wl_drag, drag_offer);
wl_resource_post_event(&drag->resource, WL_DRAG_FINISH, fd);
close(fd);
}
static void
drag_offer_reject(struct wl_client *client, struct wl_resource *resource)
{
struct wl_drag_offer *offer = resource->data;
struct wl_drag *drag = container_of(offer, struct wl_drag, drag_offer);
wl_resource_post_event(&drag->resource, WL_DRAG_REJECT);
}
static const struct wl_drag_offer_interface drag_offer_interface = {
drag_offer_accept,
drag_offer_receive,
drag_offer_reject
};
static void
drag_offer(struct wl_client *client,
struct wl_resource *resource, const char *type)
{
struct wl_drag *drag = resource->data;
char **p;
p = wl_array_add(&drag->types, sizeof *p);
if (p)
*p = strdup(type);
if (!p || !*p)
wl_resource_post_no_memory(resource);
}
static void
drag_grab_motion(struct wl_grab *grab,
uint32_t time, int32_t x, int32_t y)
{
struct wl_drag *drag = container_of(grab, struct wl_drag, grab);
struct wlsc_surface *es;
int32_t sx, sy;
es = pick_surface(grab->input_device, &sx, &sy);
wl_drag_set_pointer_focus(drag, &es->surface, time, x, y, sx, sy);
if (es)
wl_resource_post_event(&drag->drag_offer.resource,
WL_DRAG_OFFER_MOTION,
time, x, y, sx, sy);
}
static void
drag_grab_button(struct wl_grab *grab,
uint32_t time, int32_t button, int32_t state)
{
}
static void
drag_grab_end(struct wl_grab *grab, uint32_t time)
{
struct wl_drag *drag = container_of(grab, struct wl_drag, grab);
if (drag->target)
wl_resource_post_event(&drag->drag_offer.resource,
WL_DRAG_OFFER_DROP);
wl_drag_set_pointer_focus(drag, NULL, time, 0, 0, 0, 0);
}
static const struct wl_grab_interface drag_grab_interface = {
drag_grab_motion,
drag_grab_button,
drag_grab_end
};
static void
drag_activate(struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *surface_resource,
struct wl_resource *device_resource, uint32_t time)
{
struct wl_drag *drag = resource->data;
struct wl_surface *surface = surface_resource->data;
struct wl_input_device *device = device_resource->data;
struct wl_display *display = wl_client_get_display (client);
struct wlsc_surface *target;
int32_t sx, sy;
if (wl_input_device_update_grab(device,
&drag->grab, surface, time) < 0)
return;
drag->grab.interface = &drag_grab_interface;
drag->source = surface;
drag->drag_offer.resource.object.interface = &wl_drag_offer_interface;
drag->drag_offer.resource.object.implementation =
(void (**)(void)) &drag_offer_interface;
wl_display_add_global(display, &wl_drag_offer_interface, drag, NULL);
target = pick_surface(device, &sx, &sy);
wl_input_device_set_pointer_focus(device, NULL, time, 0, 0, 0, 0);
wl_drag_set_pointer_focus(drag, &target->surface, time,
device->x, device->y, sx, sy);
}
static void
drag_destroy(struct wl_client *client, struct wl_resource *resource)
{
wl_resource_destroy(resource, wlsc_compositor_get_time());
}
static const struct wl_drag_interface drag_interface = {
drag_offer,
drag_activate,
drag_destroy,
};
static void
drag_handle_surface_destroy(struct wl_listener *listener,
struct wl_resource *resource, uint32_t time)
{
struct wl_drag *drag =
container_of(listener, struct wl_drag, drag_focus_listener);
struct wl_surface *surface = (struct wl_surface *) resource;
if (drag->drag_focus == surface)
wl_drag_set_pointer_focus(drag, NULL, time, 0, 0, 0, 0);
}
static void
shell_create_drag(struct wl_client *client,
struct wl_resource *resource, uint32_t id)
{
struct wl_drag *drag;
drag = malloc(sizeof *drag);
if (drag == NULL) {
wl_resource_post_no_memory(resource);
return;
}
memset(drag, 0, sizeof *drag);
drag->resource.object.id = id;
drag->resource.object.interface = &wl_drag_interface;
drag->resource.object.implementation =
(void (**)(void)) &drag_interface;
drag->resource.data = drag;
drag->resource.destroy = destroy_drag;
drag->drag_focus_listener.func = drag_handle_surface_destroy;
wl_list_init(&drag->drag_focus_listener.link);
wl_client_add_resource(client, &drag->resource);
}
static void
wlsc_selection_set_focus(struct wlsc_shell *shell,
struct wl_selection *selection,
struct wl_surface *surface, uint32_t time)
{
char **p, **end;
if (selection->selection_focus == surface)
return;
if (selection->selection_focus != NULL)
wl_resource_post_event(&selection->selection_offer.resource,
WL_SELECTION_OFFER_KEYBOARD_FOCUS,
NULL);
if (surface) {
selection->selection_offer.resource.client = surface->resource.client;
end = selection->types.data + selection->types.size;
for (p = selection->types.data; p < end; p++)
wl_resource_post_event(&selection->selection_offer.resource,
WL_SELECTION_OFFER_OFFER, *p);
wl_list_remove(&selection->selection_focus_listener.link);
wl_list_insert(surface->resource.destroy_listener_list.prev,
&selection->selection_focus_listener.link);
wl_resource_post_event(&selection->selection_offer.resource,
WL_SELECTION_OFFER_KEYBOARD_FOCUS,
selection->input_device);
}
selection->selection_focus = surface;
wl_list_remove(&selection->selection_focus_listener.link);
if (surface)
wl_list_insert(surface->resource.destroy_listener_list.prev,
&selection->selection_focus_listener.link);
}
static void
selection_offer_receive(struct wl_client *client,
struct wl_resource *resource,
const char *mime_type, int fd)
{
struct wl_selection_offer *offer = resource->data;
struct wl_selection *selection =
container_of(offer, struct wl_selection, selection_offer);
wl_resource_post_event(&selection->resource,
WL_SELECTION_SEND, mime_type, fd);
close(fd);
}
static const struct wl_selection_offer_interface selection_offer_interface = {
selection_offer_receive
};
static void
selection_offer(struct wl_client *client,
struct wl_resource *resource, const char *type)
{
struct wl_selection *selection = resource->data;
char **p;
p = wl_array_add(&selection->types, sizeof *p);
if (p)
*p = strdup(type);
if (!p || !*p)
wl_resource_post_no_memory(resource);
}
static void
selection_activate(struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *input_resource, uint32_t time)
{
struct wl_selection *selection = resource->data;
struct wlsc_input_device *wd = input_resource->data;
struct wl_display *display = wl_client_get_display (client);
struct wlsc_compositor *compositor = wd->compositor;
selection->input_device = &wd->input_device;
selection->selection_offer.resource.object.interface =
&wl_selection_offer_interface;
selection->selection_offer.resource.object.implementation =
(void (**)(void)) &selection_offer_interface;
wl_display_add_global(display,
&wl_selection_offer_interface, selection, NULL);
if (wd->selection) {
wl_resource_post_event(&wd->selection->resource,
WL_SELECTION_CANCELLED);
}
wd->selection = selection;
wlsc_selection_set_focus(compositor->shell, selection,
wd->input_device.keyboard_focus, time);
}
static void
selection_destroy(struct wl_client *client, struct wl_resource *resource)
{
wl_resource_destroy(resource, wlsc_compositor_get_time());
}
static const struct wl_selection_interface selection_interface = {
selection_offer,
selection_activate,
selection_destroy
};
static void
destroy_selection(struct wl_resource *resource)
{
struct wl_selection *selection =
container_of(resource, struct wl_selection, resource);
struct wlsc_input_device *wd =
(struct wlsc_input_device *) selection->input_device;
struct wlsc_compositor *compositor = wd->compositor;
if (wd && wd->selection == selection) {
wd->selection = NULL;
wlsc_selection_set_focus(compositor->shell,
selection, NULL,
wlsc_compositor_get_time());
}
wl_list_remove(&selection->selection_focus_listener.link);
free(selection);
}
static void
selection_handle_surface_destroy(struct wl_listener *listener,
struct wl_resource *resource, uint32_t time)
{
}
static void
shell_create_selection(struct wl_client *client,
struct wl_resource *resource, uint32_t id)
{
struct wl_selection *selection;
selection = malloc(sizeof *selection);
if (selection == NULL) {
wl_resource_post_no_memory(resource);
return;
}
memset(selection, 0, sizeof *selection);
selection->resource.object.id = id;
selection->resource.object.interface = &wl_selection_interface;
selection->resource.object.implementation =
(void (**)(void)) &selection_interface;
selection->client = client;
selection->resource.destroy = destroy_selection;
selection->selection_focus = NULL;
selection->selection_focus_listener.func =
selection_handle_surface_destroy;
wl_list_init(&selection->selection_focus_listener.link);
wl_client_add_resource(client, &selection->resource);
}
static const struct wl_shell_interface shell_interface = {
shell_move,
shell_resize,
shell_create_drag,
shell_create_selection,
shell_set_toplevel,
shell_set_transient,
shell_set_fullscreen
};
static void
desktop_shell_set_background(struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *output_resource,
struct wl_resource *surface_resource)
{
struct wl_shell *shell = resource->data;
struct wlsc_surface *surface = surface_resource->data;
struct shell_surface *priv;
priv = get_shell_surface(surface);
priv->type = SHELL_SURFACE_BACKGROUND;
priv->output = output_resource->data;
wl_list_insert(&shell->backgrounds, &priv->link);
surface->x = priv->output->x;
surface->y = priv->output->y;
wl_resource_post_event(resource,
DESKTOP_SHELL_CONFIGURE,
wlsc_compositor_get_time(), 0, surface,
priv->output->current->width,
priv->output->current->height);
}
static void
desktop_shell_set_panel(struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *output_resource,
struct wl_resource *surface_resource)
{
struct wl_shell *shell = resource->data;
struct wlsc_surface *surface = surface_resource->data;
struct shell_surface *priv;
priv = get_shell_surface(surface);
priv->type = SHELL_SURFACE_PANEL;
priv->output = output_resource->data;
wl_list_insert(&shell->panels, &priv->link);
surface->x = priv->output->x;
surface->y = priv->output->y;
wl_resource_post_event(resource,
DESKTOP_SHELL_CONFIGURE,
wlsc_compositor_get_time(), 0, surface_resource,
priv->output->current->width,
priv->output->current->height);
}
static void
handle_lock_surface_destroy(struct wl_listener *listener,
struct wl_resource *resource, uint32_t time)
{
struct wl_shell *shell =
container_of(listener, struct wl_shell, lock_surface_listener);
fprintf(stderr, "lock surface gone\n");
shell->lock_surface = NULL;
}
static void
desktop_shell_set_lock_surface(struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *surface_resource)
{
struct wl_shell *shell = resource->data;
struct shell_surface *priv;
shell->prepare_event_sent = false;
if (!shell->locked)
return;
shell->lock_surface = surface_resource->data;
shell->lock_surface_listener.func = handle_lock_surface_destroy;
wl_list_insert(&surface_resource->destroy_listener_list,
&shell->lock_surface_listener.link);
priv = get_shell_surface(shell->lock_surface);
priv->type = SHELL_SURFACE_LOCK;
}
static void
resume_desktop(struct wl_shell *shell)
{
struct wlsc_surface *surface;
struct shell_surface *background;
wl_list_for_each(surface, &shell->hidden_surface_list, link)
wlsc_surface_configure(surface, surface->x, surface->y,
surface->width, surface->height);
background = container_of(shell->backgrounds.prev,
struct shell_surface, link);
wl_list_insert_list(background->surface->link.prev,
&shell->hidden_surface_list);
wl_list_init(&shell->hidden_surface_list);
shell->locked = false;
wlsc_compositor_repick(shell->compositor);
wlsc_compositor_wake(shell->compositor);
}
static void
desktop_shell_unlock(struct wl_client *client,
struct wl_resource *resource)
{
struct wl_shell *shell = resource->data;
shell->prepare_event_sent = false;
if (shell->locked)
resume_desktop(shell);
}
static const struct desktop_shell_interface desktop_shell_implementation = {
desktop_shell_set_background,
desktop_shell_set_panel,
desktop_shell_set_lock_surface,
desktop_shell_unlock
};
static void
move_binding(struct wl_input_device *device, uint32_t time,
uint32_t key, uint32_t button, uint32_t state, void *data)
{
struct wlsc_surface *surface =
(struct wlsc_surface *) device->pointer_focus;
struct shell_surface *priv;
if (surface == NULL)
return;
priv = get_shell_surface(surface);
switch (priv->type) {
case SHELL_SURFACE_PANEL:
case SHELL_SURFACE_BACKGROUND:
case SHELL_SURFACE_FULLSCREEN:
return;
default:
break;
}
wlsc_surface_move(surface, (struct wlsc_input_device *) device, time);
}
static void
resize_binding(struct wl_input_device *device, uint32_t time,
uint32_t key, uint32_t button, uint32_t state, void *data)
{
struct wlsc_surface *surface =
(struct wlsc_surface *) device->pointer_focus;
struct wl_resource *resource;
uint32_t edges = 0;
int32_t x, y;
struct shell_surface *priv;
if (surface == NULL)
return;
priv = get_shell_surface(surface);
switch (priv->type) {
case SHELL_SURFACE_PANEL:
case SHELL_SURFACE_BACKGROUND:
case SHELL_SURFACE_FULLSCREEN:
return;
default:
break;
}
x = device->grab_x - surface->x;
y = device->grab_y - surface->y;
if (x < surface->width / 3)
edges |= WL_SHELL_RESIZE_LEFT;
else if (x < 2 * surface->width / 3)
edges |= 0;
else
edges |= WL_SHELL_RESIZE_RIGHT;
if (y < surface->height / 3)
edges |= WL_SHELL_RESIZE_TOP;
else if (y < 2 * surface->height / 3)
edges |= 0;
else
edges |= WL_SHELL_RESIZE_BOTTOM;
resource = /* Find shell resource for surface client */ 0;
/* ... or use wl_shell_surface */
wlsc_surface_resize(surface, (struct wlsc_input_device *) device,
time, edges, resource);
}
static void
activate(struct wlsc_shell *base, struct wlsc_surface *es,
struct wlsc_input_device *device, uint32_t time)
{
struct wl_shell *shell = container_of(base, struct wl_shell, shell);
struct wlsc_compositor *compositor = shell->compositor;
struct shell_surface *priv;
priv = get_shell_surface(es);
wlsc_surface_activate(es, device, time);
if (compositor->wxs)
wlsc_xserver_surface_activate(es);
switch (priv->type) {
case SHELL_SURFACE_BACKGROUND:
/* put background back to bottom */
wl_list_remove(&es->link);
wl_list_insert(compositor->surface_list.prev, &es->link);
break;
case SHELL_SURFACE_PANEL:
/* already put on top */
break;
default:
if (!shell->locked) {
/* bring panel back to top */
struct shell_surface *panel;
wl_list_for_each(panel, &shell->panels, link) {
wl_list_remove(&panel->surface->link);
wl_list_insert(&compositor->surface_list,
&panel->surface->link);
}
}
}
}
static void
lock(struct wlsc_shell *base)
{
struct wl_shell *shell = container_of(base, struct wl_shell, shell);
struct wl_list *surface_list = &shell->compositor->surface_list;
struct wlsc_surface *cur;
struct wlsc_surface *tmp;
struct shell_surface *priv;
struct wlsc_input_device *device;
uint32_t time;
if (shell->locked)
return;
shell->locked = true;
/* Move all surfaces from compositor's list to our hidden list,
* except the background. This way nothing else can show or
* receive input events while we are locked. */
if (!wl_list_empty(&shell->hidden_surface_list)) {
fprintf(stderr,
"%s: Assertion failed: hidden_surface_list is not empty.\n",
__func__);
}
wl_list_for_each_safe(cur, tmp, surface_list, link) {
/* skip input device sprites, cur->surface is uninitialised */
if (cur->surface.resource.client == NULL)
continue;
priv = get_shell_surface(cur);
if (priv->type == SHELL_SURFACE_BACKGROUND)
continue;
cur->output = NULL;
wl_list_remove(&cur->link);
wl_list_insert(shell->hidden_surface_list.prev, &cur->link);
}
/* reset pointer foci */
wlsc_compositor_repick(shell->compositor);
/* reset keyboard foci */
time = wlsc_compositor_get_time();
wl_list_for_each(device, &shell->compositor->input_device_list, link) {
wl_input_device_set_keyboard_focus(&device->input_device,
NULL, time);
}
/* TODO: disable bindings that should not work while locked. */
/* All this must be undone in resume_desktop(). */
}
static void
unlock(struct wlsc_shell *base)
{
struct wl_shell *shell = container_of(base, struct wl_shell, shell);
if (!shell->locked || shell->lock_surface) {
wlsc_compositor_wake(shell->compositor);
return;
}
/* If desktop-shell client has gone away, unlock immediately. */
if (!shell->child.desktop_shell) {
resume_desktop(shell);
return;
}
if (shell->prepare_event_sent)
return;
wl_resource_post_event(shell->child.desktop_shell,
DESKTOP_SHELL_PREPARE_LOCK_SURFACE);
shell->prepare_event_sent = true;
}
static void
map(struct wlsc_shell *base,
struct wlsc_surface *surface, int32_t width, int32_t height)
{
struct wl_shell *shell = container_of(base, struct wl_shell, shell);
struct wlsc_compositor *compositor = shell->compositor;
struct wl_list *list;
struct shell_surface *priv;
priv = get_shell_surface(surface);
if (shell->locked)
list = &shell->hidden_surface_list;
else
list = &compositor->surface_list;
/* surface stacking order, see also activate() */
switch (priv->type) {
case SHELL_SURFACE_BACKGROUND:
/* background always visible, at the bottom */
wl_list_insert(compositor->surface_list.prev, &surface->link);
break;
case SHELL_SURFACE_PANEL:
/* panel always on top, hidden while locked */
wl_list_insert(list, &surface->link);
break;
case SHELL_SURFACE_LOCK:
/* lock surface always visible, on top */
wl_list_insert(&compositor->surface_list, &surface->link);
wlsc_compositor_repick(compositor);
wlsc_compositor_wake(compositor);
break;
default:
/* everything else just below the panel */
if (!wl_list_empty(&shell->panels)) {
struct shell_surface *panel =
container_of(shell->panels.prev,
struct shell_surface, link);
wl_list_insert(&panel->surface->link, &surface->link);
} else {
wl_list_insert(list, &surface->link);
}
}
if (priv->type == SHELL_SURFACE_TOPLEVEL) {
surface->x = 10 + random() % 400;
surface->y = 10 + random() % 400;
}
surface->width = width;
surface->height = height;
if (!shell->locked || priv->type == SHELL_SURFACE_LOCK)
wlsc_surface_configure(surface,
surface->x, surface->y, width, height);
}
static void
configure(struct wlsc_shell *shell, struct wlsc_surface *surface,
int32_t x, int32_t y, int32_t width, int32_t height)
{
struct wlsc_mode *current;
struct shell_surface *priv;
priv = get_shell_surface(surface);
switch (priv->type) {
case SHELL_SURFACE_FULLSCREEN:
current = surface->fullscreen_output->current;
x = (current->width - surface->width) / 2;
y = (current->height - surface->height) / 2;
break;
default:
break;
}
wlsc_surface_configure(surface, x, y, width, height);
}
static void
desktop_shell_sigchld(struct wlsc_process *process, int status)
{
struct wl_shell *shell =
container_of(process, struct wl_shell, child.process);
shell->child.process.pid = 0;
shell->child.client = NULL; /* already destroyed by wayland */
}
static int
launch_desktop_shell_process(struct wl_shell *shell)
{
const char *shell_exe = LIBEXECDIR "/wayland-desktop-shell";
struct wlsc_compositor *compositor = shell->compositor;
char s[32];
int sv[2], flags;
if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0, sv) < 0) {
fprintf(stderr, "socketpair failed\n");
return -1;
}
shell->child.process.pid = fork();
shell->child.process.cleanup = desktop_shell_sigchld;
switch (shell->child.process.pid) {
case 0:
/* SOCK_CLOEXEC closes both ends, so we need to unset
* the flag on the client fd. */
flags = fcntl(sv[1], F_GETFD);
if (flags != -1)
fcntl(sv[1], F_SETFD, flags & ~FD_CLOEXEC);
snprintf(s, sizeof s, "%d", sv[1]);
setenv("WAYLAND_SOCKET", s, 1);
if (execl(shell_exe, shell_exe, NULL) < 0)
fprintf(stderr, "%s: running '%s' failed: %m\n",
__func__, shell_exe);
exit(-1);
default:
close(sv[1]);
shell->child.client =
wl_client_create(compositor->wl_display, sv[0]);
wlsc_watch_process(&shell->child.process);
break;
case -1:
fprintf(stderr, "%s: fork failed: %m\n", __func__);
return -1;
}
return 0;
}
static void
bind_shell(struct wl_client *client, void *data, uint32_t version, uint32_t id)
{
struct wl_shell *shell = data;
wl_client_add_object(client, &wl_shell_interface,
&shell_interface, id, shell);
}
static void
unbind_desktop_shell(struct wl_resource *resource)
{
struct wl_shell *shell = resource->data;
if (shell->locked)
resume_desktop(shell);
shell->child.desktop_shell = NULL;
shell->prepare_event_sent = false;
free(resource);
}
static void
bind_desktop_shell(struct wl_client *client,
void *data, uint32_t version, uint32_t id)
{
struct wl_shell *shell = data;
struct wl_resource *resource;
resource = wl_client_add_object(client, &desktop_shell_interface,
&desktop_shell_implementation,
id, shell);
if (client == shell->child.client) {
resource->destroy = unbind_desktop_shell;
shell->child.desktop_shell = resource;
return;
}
wl_resource_post_error(resource, WL_DISPLAY_ERROR_INVALID_OBJECT,
"permission to bind desktop_shell denied");
wl_resource_destroy(resource, 0);
}
int
shell_init(struct wlsc_compositor *ec);
WL_EXPORT int
shell_init(struct wlsc_compositor *ec)
{
struct wl_shell *shell;
shell = malloc(sizeof *shell);
if (shell == NULL)
return -1;
memset(shell, 0, sizeof *shell);
shell->compositor = ec;
shell->shell.activate = activate;
shell->shell.lock = lock;
shell->shell.unlock = unlock;
shell->shell.map = map;
shell->shell.configure = configure;
shell->shell.set_selection_focus = wlsc_selection_set_focus;
wl_list_init(&shell->hidden_surface_list);
wl_list_init(&shell->backgrounds);
wl_list_init(&shell->panels);
if (wl_display_add_global(ec->wl_display, &wl_shell_interface,
shell, bind_shell) == NULL)
return -1;
if (wl_display_add_global(ec->wl_display,
&desktop_shell_interface,
shell, bind_desktop_shell) == NULL)
return -1;
if (launch_desktop_shell_process(shell) != 0)
return -1;
wlsc_compositor_add_binding(ec, 0, BTN_LEFT, MODIFIER_SUPER,
move_binding, shell);
wlsc_compositor_add_binding(ec, 0, BTN_MIDDLE, MODIFIER_SUPER,
resize_binding, shell);
ec->shell = &shell->shell;
return 0;
}