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weston/kiosk-shell/kiosk-shell.c

1257 lines
36 KiB

/*
* Copyright 2010-2012 Intel Corporation
* Copyright 2013 Raspberry Pi Foundation
* Copyright 2011-2012,2020 Collabora, Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include <assert.h>
#include <linux/input.h>
#include <stdbool.h>
#include <stdint.h>
#include <string.h>
#include "kiosk-shell.h"
#include "kiosk-shell-grab.h"
#include "compositor/weston.h"
#include "shared/helpers.h"
#include "shared/shell-utils.h"
#include <libweston/xwayland-api.h>
static struct kiosk_shell_surface *
get_kiosk_shell_surface(struct weston_surface *surface)
{
struct weston_desktop_surface *desktop_surface =
weston_surface_get_desktop_surface(surface);
if (desktop_surface)
return weston_desktop_surface_get_user_data(desktop_surface);
return NULL;
}
static void
kiosk_shell_seat_handle_destroy(struct wl_listener *listener, void *data);
static struct kiosk_shell_seat *
get_kiosk_shell_seat(struct weston_seat *seat)
{
struct wl_listener *listener;
if (!seat)
return NULL;
listener = wl_signal_get(&seat->destroy_signal,
kiosk_shell_seat_handle_destroy);
if (!listener)
return NULL;
return container_of(listener,
struct kiosk_shell_seat, seat_destroy_listener);
}
static struct weston_seat *
get_kiosk_shell_first_seat(struct kiosk_shell *shell)
{
struct wl_list *node;
struct weston_compositor *compositor = shell->compositor;
if (wl_list_empty(&compositor->seat_list))
return NULL;
node = compositor->seat_list.next;
return container_of(node, struct weston_seat, link);
}
static void
transform_handler(struct wl_listener *listener, void *data)
{
struct weston_surface *surface = data;
struct kiosk_shell_surface *shsurf = get_kiosk_shell_surface(surface);
const struct weston_xwayland_surface_api *api;
int x, y;
if (!shsurf)
return;
api = shsurf->shell->xwayland_surface_api;
if (!api) {
api = weston_xwayland_surface_get_api(shsurf->shell->compositor);
shsurf->shell->xwayland_surface_api = api;
}
if (!api || !api->is_xwayland_surface(surface))
return;
if (!weston_view_is_mapped(shsurf->view))
return;
x = shsurf->view->geometry.x;
y = shsurf->view->geometry.y;
api->send_position(surface, x, y);
}
/*
* kiosk_shell_surface
*/
static void
kiosk_shell_surface_set_output(struct kiosk_shell_surface *shsurf,
struct weston_output *output);
static void
kiosk_shell_surface_set_parent(struct kiosk_shell_surface *shsurf,
struct kiosk_shell_surface *parent);
static void
kiosk_shell_surface_notify_parent_destroy(struct wl_listener *listener, void *data)
{
struct kiosk_shell_surface *shsurf =
container_of(listener,
struct kiosk_shell_surface, parent_destroy_listener);
kiosk_shell_surface_set_parent(shsurf, shsurf->parent->parent);
}
static void
kiosk_shell_surface_notify_output_destroy(struct wl_listener *listener, void *data)
{
struct kiosk_shell_surface *shsurf =
container_of(listener,
struct kiosk_shell_surface, output_destroy_listener);
kiosk_shell_surface_set_output(shsurf, NULL);
}
static struct kiosk_shell_surface *
kiosk_shell_surface_get_parent_root(struct kiosk_shell_surface *shsurf)
{
struct kiosk_shell_surface *root = shsurf;
while (root->parent)
root = root->parent;
return root;
}
static bool
kiosk_shell_output_has_app_id(struct kiosk_shell_output *shoutput,
const char *app_id);
static struct weston_output *
kiosk_shell_surface_find_best_output(struct kiosk_shell_surface *shsurf)
{
struct weston_output *output;
struct kiosk_shell_output *shoutput;
struct kiosk_shell_surface *root;
const char *app_id;
/* Always use current output if any. */
if (shsurf->output)
return shsurf->output;
/* Check if we have a designated output for this app. */
app_id = weston_desktop_surface_get_app_id(shsurf->desktop_surface);
if (app_id) {
wl_list_for_each(shoutput, &shsurf->shell->output_list, link) {
if (kiosk_shell_output_has_app_id(shoutput, app_id)) {
shsurf->appid_output_assigned = true;
return shoutput->output;
}
}
}
/* Group all related windows in the same output. */
root = kiosk_shell_surface_get_parent_root(shsurf);
if (root->output)
return root->output;
output = get_focused_output(shsurf->shell->compositor);
if (output)
return output;
output = get_default_output(shsurf->shell->compositor);
if (output)
return output;
return NULL;
}
static void
kiosk_shell_surface_set_output(struct kiosk_shell_surface *shsurf,
struct weston_output *output)
{
shsurf->output = output;
if (shsurf->output_destroy_listener.notify) {
wl_list_remove(&shsurf->output_destroy_listener.link);
shsurf->output_destroy_listener.notify = NULL;
}
if (!shsurf->output)
return;
shsurf->output_destroy_listener.notify =
kiosk_shell_surface_notify_output_destroy;
wl_signal_add(&shsurf->output->destroy_signal,
&shsurf->output_destroy_listener);
}
static void
kiosk_shell_surface_set_fullscreen(struct kiosk_shell_surface *shsurf,
struct weston_output *output)
{
if (!output)
output = kiosk_shell_surface_find_best_output(shsurf);
kiosk_shell_surface_set_output(shsurf, output);
weston_desktop_surface_set_fullscreen(shsurf->desktop_surface, true);
if (shsurf->output)
weston_desktop_surface_set_size(shsurf->desktop_surface,
shsurf->output->width,
shsurf->output->height);
}
static void
kiosk_shell_surface_set_maximized(struct kiosk_shell_surface *shsurf)
{
struct weston_output *output =
kiosk_shell_surface_find_best_output(shsurf);
kiosk_shell_surface_set_output(shsurf, output);
weston_desktop_surface_set_maximized(shsurf->desktop_surface, true);
if (shsurf->output)
weston_desktop_surface_set_size(shsurf->desktop_surface,
shsurf->output->width,
shsurf->output->height);
}
static void
kiosk_shell_surface_set_normal(struct kiosk_shell_surface *shsurf)
{
if (!shsurf->output)
kiosk_shell_surface_set_output(shsurf,
kiosk_shell_surface_find_best_output(shsurf));
weston_desktop_surface_set_fullscreen(shsurf->desktop_surface, false);
weston_desktop_surface_set_maximized(shsurf->desktop_surface, false);
weston_desktop_surface_set_size(shsurf->desktop_surface, 0, 0);
}
static void
kiosk_shell_surface_set_parent(struct kiosk_shell_surface *shsurf,
struct kiosk_shell_surface *parent)
{
if (shsurf->parent_destroy_listener.notify) {
wl_list_remove(&shsurf->parent_destroy_listener.link);
shsurf->parent_destroy_listener.notify = NULL;
}
shsurf->parent = parent;
if (shsurf->parent) {
shsurf->parent_destroy_listener.notify =
kiosk_shell_surface_notify_parent_destroy;
wl_signal_add(&shsurf->parent->destroy_signal,
&shsurf->parent_destroy_listener);
kiosk_shell_surface_set_output(shsurf, NULL);
kiosk_shell_surface_set_normal(shsurf);
} else {
kiosk_shell_surface_set_fullscreen(shsurf, shsurf->output);
}
}
static void
kiosk_shell_surface_reconfigure_for_output(struct kiosk_shell_surface *shsurf)
{
struct weston_desktop_surface *desktop_surface;
if (!shsurf->output)
return;
desktop_surface = shsurf->desktop_surface;
if (weston_desktop_surface_get_maximized(desktop_surface) ||
weston_desktop_surface_get_fullscreen(desktop_surface)) {
weston_desktop_surface_set_size(desktop_surface,
shsurf->output->width,
shsurf->output->height);
}
center_on_output(shsurf->view, shsurf->output);
weston_view_update_transform(shsurf->view);
}
static void
kiosk_shell_surface_destroy(struct kiosk_shell_surface *shsurf)
{
wl_signal_emit(&shsurf->destroy_signal, shsurf);
weston_desktop_surface_set_user_data(shsurf->desktop_surface, NULL);
shsurf->desktop_surface = NULL;
weston_desktop_surface_unlink_view(shsurf->view);
weston_view_destroy(shsurf->view);
if (shsurf->output_destroy_listener.notify) {
wl_list_remove(&shsurf->output_destroy_listener.link);
shsurf->output_destroy_listener.notify = NULL;
}
if (shsurf->parent_destroy_listener.notify) {
wl_list_remove(&shsurf->parent_destroy_listener.link);
shsurf->parent_destroy_listener.notify = NULL;
shsurf->parent = NULL;
}
free(shsurf);
}
static struct kiosk_shell_surface *
kiosk_shell_surface_create(struct kiosk_shell *shell,
struct weston_desktop_surface *desktop_surface)
{
struct weston_desktop_client *client =
weston_desktop_surface_get_client(desktop_surface);
struct wl_client *wl_client =
weston_desktop_client_get_client(client);
struct weston_view *view;
struct kiosk_shell_surface *shsurf;
view = weston_desktop_surface_create_view(desktop_surface);
if (!view)
return NULL;
shsurf = zalloc(sizeof *shsurf);
if (!shsurf) {
if (wl_client)
wl_client_post_no_memory(wl_client);
else
weston_log("no memory to allocate shell surface\n");
return NULL;
}
shsurf->desktop_surface = desktop_surface;
shsurf->view = view;
shsurf->shell = shell;
shsurf->appid_output_assigned = false;
weston_desktop_surface_set_user_data(desktop_surface, shsurf);
wl_signal_init(&shsurf->destroy_signal);
return shsurf;
}
static void
kiosk_shell_surface_activate(struct kiosk_shell_surface *shsurf,
struct kiosk_shell_seat *kiosk_seat,
uint32_t activate_flags)
{
struct weston_desktop_surface *dsurface = shsurf->desktop_surface;
struct weston_surface *surface =
weston_desktop_surface_get_surface(dsurface);
/* keyboard focus */
weston_view_activate_input(shsurf->view, kiosk_seat->seat, activate_flags);
/* xdg-shell deactivation if there's a focused one */
if (kiosk_seat->focused_surface) {
struct kiosk_shell_surface *current_focus =
get_kiosk_shell_surface(kiosk_seat->focused_surface);
struct weston_desktop_surface *dsurface_focus;
assert(current_focus);
dsurface_focus = current_focus->desktop_surface;
if (--current_focus->focus_count == 0)
weston_desktop_surface_set_activated(dsurface_focus, false);
/* removes it from the normal_layer and move it to inactive
* one, without occluding the top-level window if the new one
* is a child to that. Also, do not occlude another view
* (currently focused one) on a different output when activating
* a new one. */
if (!shsurf->parent && (shsurf->output == current_focus->output)) {
weston_layer_entry_remove(&current_focus->view->layer_link);
weston_layer_entry_insert(&shsurf->shell->inactive_layer.view_list,
&current_focus->view->layer_link);
weston_view_geometry_dirty(current_focus->view);
weston_surface_damage(current_focus->view->surface);
}
}
/* xdg-shell activation for the new one */
kiosk_seat->focused_surface = surface;
if (shsurf->focus_count++ == 0)
weston_desktop_surface_set_activated(dsurface, true);
/* removes it from the inactive_layer, on removal of a surface, and
* move it back to the normal layer */
weston_layer_entry_remove(&shsurf->view->layer_link);
weston_layer_entry_insert(&shsurf->shell->normal_layer.view_list,
&shsurf->view->layer_link);
weston_view_geometry_dirty(shsurf->view);
weston_surface_damage(shsurf->view->surface);
}
/*
* kiosk_shell_seat
*/
static void
kiosk_shell_seat_destroy(struct kiosk_shell_seat *shseat)
{
wl_list_remove(&shseat->seat_destroy_listener.link);
wl_list_remove(&shseat->link);
free(shseat);
}
static void
kiosk_shell_seat_handle_destroy(struct wl_listener *listener, void *data)
{
struct kiosk_shell_seat *shseat =
container_of(listener,
struct kiosk_shell_seat, seat_destroy_listener);
kiosk_shell_seat_destroy(shseat);
}
static struct kiosk_shell_seat *
kiosk_shell_seat_create(struct kiosk_shell *shell, struct weston_seat *seat)
{
struct kiosk_shell_seat *shseat;
if (wl_list_length(&shell->seat_list) > 0) {
weston_log("WARNING: multiple seats detected. kiosk-shell "
"can not handle multiple seats!\n");
return NULL;
}
shseat = zalloc(sizeof *shseat);
if (!shseat) {
weston_log("no memory to allocate shell seat\n");
return NULL;
}
shseat->seat = seat;
shseat->seat_destroy_listener.notify = kiosk_shell_seat_handle_destroy;
wl_signal_add(&seat->destroy_signal, &shseat->seat_destroy_listener);
wl_list_insert(&shell->seat_list, &shseat->link);
return shseat;
}
/*
* kiosk_shell_output
*/
static int
kiosk_shell_background_surface_get_label(struct weston_surface *surface,
char *buf, size_t len)
{
return snprintf(buf, len, "kiosk shell background surface");
}
static void
kiosk_shell_output_recreate_background(struct kiosk_shell_output *shoutput)
{
struct kiosk_shell *shell = shoutput->shell;
struct weston_compositor *ec = shell->compositor;
struct weston_output *output = shoutput->output;
struct weston_config_section *shell_section = NULL;
uint32_t bg_color = 0x0;
struct weston_curtain_params curtain_params = {};
if (shoutput->background_view)
weston_surface_destroy(shoutput->background_view->surface);
if (!output)
return;
if (shell->config)
shell_section = weston_config_get_section(shell->config, "shell", NULL, NULL);
if (shell_section)
weston_config_section_get_color(shell_section, "background-color",
&bg_color, 0x00000000);
curtain_params.r = ((bg_color >> 16) & 0xff) / 255.0;
curtain_params.g = ((bg_color >> 8) & 0xff) / 255.0;
curtain_params.b = ((bg_color >> 0) & 0xff) / 255.0;
curtain_params.a = 1.0;
curtain_params.x = output->x;
curtain_params.y = output->y;
curtain_params.width = output->width;
curtain_params.height = output->height;
curtain_params.capture_input = true;
curtain_params.get_label = kiosk_shell_background_surface_get_label;
curtain_params.surface_committed = NULL;
curtain_params.surface_private = NULL;
shoutput->background_view = weston_curtain_create(ec, &curtain_params);
weston_surface_set_role(shoutput->background_view->surface,
"kiosk-shell-background", NULL, 0);
weston_layer_entry_insert(&shell->background_layer.view_list,
&shoutput->background_view->layer_link);
shoutput->background_view->is_mapped = true;
shoutput->background_view->surface->is_mapped = true;
shoutput->background_view->surface->output = output;
weston_view_set_output(shoutput->background_view, output);
}
static void
kiosk_shell_output_destroy(struct kiosk_shell_output *shoutput)
{
shoutput->output = NULL;
shoutput->output_destroy_listener.notify = NULL;
if (shoutput->background_view)
weston_surface_destroy(shoutput->background_view->surface);
wl_list_remove(&shoutput->output_destroy_listener.link);
wl_list_remove(&shoutput->link);
free(shoutput->app_ids);
free(shoutput);
}
static bool
kiosk_shell_output_has_app_id(struct kiosk_shell_output *shoutput,
const char *app_id)
{
char *cur;
size_t app_id_len;
if (!shoutput->app_ids)
return false;
cur = shoutput->app_ids;
app_id_len = strlen(app_id);
while ((cur = strstr(cur, app_id))) {
/* Check whether we have found a complete match of app_id. */
if ((cur[app_id_len] == ',' || cur[app_id_len] == '\0') &&
(cur == shoutput->app_ids || cur[-1] == ','))
return true;
cur++;
}
return false;
}
static void
kiosk_shell_output_configure(struct kiosk_shell_output *shoutput)
{
struct weston_config *wc = wet_get_config(shoutput->shell->compositor);
struct weston_config_section *section =
weston_config_get_section(wc, "output", "name", shoutput->output->name);
assert(shoutput->app_ids == NULL);
if (section) {
weston_config_section_get_string(section, "app-ids",
&shoutput->app_ids, NULL);
}
}
static void
kiosk_shell_output_notify_output_destroy(struct wl_listener *listener, void *data)
{
struct kiosk_shell_output *shoutput =
container_of(listener,
struct kiosk_shell_output, output_destroy_listener);
kiosk_shell_output_destroy(shoutput);
}
static struct kiosk_shell_output *
kiosk_shell_output_create(struct kiosk_shell *shell, struct weston_output *output)
{
struct kiosk_shell_output *shoutput;
shoutput = zalloc(sizeof *shoutput);
if (shoutput == NULL)
return NULL;
shoutput->output = output;
shoutput->shell = shell;
shoutput->output_destroy_listener.notify =
kiosk_shell_output_notify_output_destroy;
wl_signal_add(&shoutput->output->destroy_signal,
&shoutput->output_destroy_listener);
wl_list_insert(shell->output_list.prev, &shoutput->link);
kiosk_shell_output_recreate_background(shoutput);
kiosk_shell_output_configure(shoutput);
return shoutput;
}
/*
* libweston-desktop
*/
static void
desktop_surface_added(struct weston_desktop_surface *desktop_surface,
void *data)
{
struct kiosk_shell *shell = data;
struct kiosk_shell_surface *shsurf;
struct weston_surface *surface =
weston_desktop_surface_get_surface(desktop_surface);
shsurf = kiosk_shell_surface_create(shell, desktop_surface);
if (!shsurf)
return;
weston_surface_set_label_func(surface, surface_get_label);
kiosk_shell_surface_set_fullscreen(shsurf, NULL);
}
/* Return the view that should gain focus after the specified shsurf is
* destroyed. We prefer the top remaining view from the same parent surface,
* but if we can't find one we fall back to the top view regardless of
* parentage. */
static struct weston_view *
find_focus_successor(struct weston_layer *layer,
struct kiosk_shell_surface *shsurf,
struct weston_surface *focused_surface)
{
struct kiosk_shell_surface *parent_root =
kiosk_shell_surface_get_parent_root(shsurf);
struct weston_view *top_view = NULL;
struct weston_view *view;
/* we need to take into account that the surface being destroyed it not
* always the same as the focus_surface, which could result in picking
* and *activating* the wrong window, so avoid returning a view for
* that case. A particular case is when a top-level child window, would
* pick a parent window below the focused_surface.
*
* Apply that only on the same output to avoid incorrectly returning an
* invalid/empty view, which could happen if the view being destroyed
* is on a output different than the focused_surface output */
if (focused_surface && focused_surface != shsurf->view->surface &&
shsurf->output == focused_surface->output)
return top_view;
wl_list_for_each(view, &layer->view_list.link, layer_link.link) {
struct kiosk_shell_surface *view_shsurf;
struct kiosk_shell_surface *root;
if (!view->is_mapped || view == shsurf->view)
continue;
/* pick views only on the same output */
if (view->output != shsurf->output)
continue;
view_shsurf = get_kiosk_shell_surface(view->surface);
if (!view_shsurf)
continue;
if (!top_view)
top_view = view;
root = kiosk_shell_surface_get_parent_root(view_shsurf);
if (root == parent_root)
return view;
}
return top_view;
}
static void
desktop_surface_removed(struct weston_desktop_surface *desktop_surface,
void *data)
{
struct kiosk_shell *shell = data;
struct kiosk_shell_surface *shsurf =
weston_desktop_surface_get_user_data(desktop_surface);
struct weston_surface *surface =
weston_desktop_surface_get_surface(desktop_surface);
struct weston_view *focus_view;
struct weston_seat *seat;
struct kiosk_shell_seat* kiosk_seat;
if (!shsurf)
return;
seat = get_kiosk_shell_first_seat(shell);
kiosk_seat = get_kiosk_shell_seat(seat);
if (seat && kiosk_seat) {
focus_view = find_focus_successor(&shell->inactive_layer, shsurf,
kiosk_seat->focused_surface);
if (focus_view) {
struct kiosk_shell_surface *focus_shsurf =
get_kiosk_shell_surface(focus_view->surface);
kiosk_shell_surface_activate(focus_shsurf, kiosk_seat,
WESTON_ACTIVATE_FLAG_NONE);
} else {
if (kiosk_seat->focused_surface == surface)
kiosk_seat->focused_surface = NULL;
}
}
kiosk_shell_surface_destroy(shsurf);
}
static void
desktop_surface_committed(struct weston_desktop_surface *desktop_surface,
int32_t sx, int32_t sy, void *data)
{
struct kiosk_shell_surface *shsurf =
weston_desktop_surface_get_user_data(desktop_surface);
struct weston_surface *surface =
weston_desktop_surface_get_surface(desktop_surface);
const char *app_id =
weston_desktop_surface_get_app_id(desktop_surface);
bool is_resized;
bool is_fullscreen;
assert(shsurf);
if (surface->width == 0)
return;
if (!shsurf->appid_output_assigned && app_id) {
struct weston_output *output = NULL;
/* reset previous output being set in _added() as the output is
* being cached */
shsurf->output = NULL;
output = kiosk_shell_surface_find_best_output(shsurf);
kiosk_shell_surface_set_output(shsurf, output);
weston_desktop_surface_set_size(shsurf->desktop_surface,
shsurf->output->width,
shsurf->output->height);
/* even if we couldn't find an appid set for a particular
* output still flag the shsurf as to a avoid changing the
* output every time */
shsurf->appid_output_assigned = true;
}
/* TODO: When the top-level surface is committed with a new size after an
* output resize, sometimes the view appears scaled. What state are we not
* updating?
*/
is_resized = surface->width != shsurf->last_width ||
surface->height != shsurf->last_height;
is_fullscreen = weston_desktop_surface_get_maximized(desktop_surface) ||
weston_desktop_surface_get_fullscreen(desktop_surface);
if (!weston_surface_is_mapped(surface) || (is_resized && is_fullscreen)) {
if (is_fullscreen || !shsurf->xwayland.is_set) {
center_on_output(shsurf->view, shsurf->output);
} else {
struct weston_geometry geometry =
weston_desktop_surface_get_geometry(desktop_surface);
float x = shsurf->xwayland.x - geometry.x;
float y = shsurf->xwayland.y - geometry.y;
weston_view_set_position(shsurf->view, x, y);
}
weston_view_update_transform(shsurf->view);
}
if (!weston_surface_is_mapped(surface)) {
struct weston_seat *seat =
get_kiosk_shell_first_seat(shsurf->shell);
struct kiosk_shell_seat *kiosk_seat;
shsurf->view->is_mapped = true;
surface->is_mapped = true;
kiosk_seat = get_kiosk_shell_seat(seat);
if (seat && kiosk_seat)
kiosk_shell_surface_activate(shsurf, kiosk_seat,
WESTON_ACTIVATE_FLAG_NONE);
}
if (!is_fullscreen && (sx != 0 || sy != 0)) {
float from_x, from_y;
float to_x, to_y;
float x, y;
weston_view_to_global_float(shsurf->view, 0, 0, &from_x, &from_y);
weston_view_to_global_float(shsurf->view, sx, sy, &to_x, &to_y);
x = shsurf->view->geometry.x + to_x - from_x;
y = shsurf->view->geometry.y + to_y - from_y;
weston_view_set_position(shsurf->view, x, y);
weston_view_update_transform(shsurf->view);
}
shsurf->last_width = surface->width;
shsurf->last_height = surface->height;
}
static void
desktop_surface_move(struct weston_desktop_surface *desktop_surface,
struct weston_seat *seat, uint32_t serial, void *shell)
{
struct weston_pointer *pointer = weston_seat_get_pointer(seat);
struct weston_touch *touch = weston_seat_get_touch(seat);
struct kiosk_shell_surface *shsurf =
weston_desktop_surface_get_user_data(desktop_surface);
struct weston_surface *surface =
weston_desktop_surface_get_surface(shsurf->desktop_surface);
struct weston_surface *focus;
if (pointer &&
pointer->focus &&
pointer->button_count > 0 &&
pointer->grab_serial == serial) {
focus = weston_surface_get_main_surface(pointer->focus->surface);
if ((focus == surface) &&
(kiosk_shell_grab_start_for_pointer_move(shsurf, pointer) ==
KIOSK_SHELL_GRAB_RESULT_ERROR))
wl_resource_post_no_memory(surface->resource);
}
else if (touch &&
touch->focus &&
touch->grab_serial == serial) {
focus = weston_surface_get_main_surface(touch->focus->surface);
if ((focus == surface) &&
(kiosk_shell_grab_start_for_touch_move(shsurf, touch) ==
KIOSK_SHELL_GRAB_RESULT_ERROR))
wl_resource_post_no_memory(surface->resource);
}
}
static void
desktop_surface_resize(struct weston_desktop_surface *desktop_surface,
struct weston_seat *seat, uint32_t serial,
enum weston_desktop_surface_edge edges, void *shell)
{
}
static void
desktop_surface_set_parent(struct weston_desktop_surface *desktop_surface,
struct weston_desktop_surface *parent,
void *shell)
{
struct kiosk_shell_surface *shsurf =
weston_desktop_surface_get_user_data(desktop_surface);
struct kiosk_shell_surface *shsurf_parent =
parent ? weston_desktop_surface_get_user_data(parent) : NULL;
kiosk_shell_surface_set_parent(shsurf, shsurf_parent);
}
static void
desktop_surface_fullscreen_requested(struct weston_desktop_surface *desktop_surface,
bool fullscreen,
struct weston_output *output, void *shell)
{
struct kiosk_shell_surface *shsurf =
weston_desktop_surface_get_user_data(desktop_surface);
/* We should normally be able to ignore fullscreen requests for
* top-level surfaces, since we set them as fullscreen at creation
* time. However, xwayland surfaces set their internal WM state
* regardless of what the shell wants, so they may remove fullscreen
* state before informing weston-desktop of this request. Since we
* always want top-level surfaces to be fullscreen, we need to reapply
* the fullscreen state to force the correct xwayland WM state.
*
* TODO: Explore a model where the XWayland WM doesn't set the internal
* WM surface state itself, rather letting the shell make the decision.
*/
if (!shsurf->parent || fullscreen)
kiosk_shell_surface_set_fullscreen(shsurf, output);
else
kiosk_shell_surface_set_normal(shsurf);
}
static void
desktop_surface_maximized_requested(struct weston_desktop_surface *desktop_surface,
bool maximized, void *shell)
{
struct kiosk_shell_surface *shsurf =
weston_desktop_surface_get_user_data(desktop_surface);
/* Since xwayland surfaces may have already applied the max/min states
* internally, reapply fullscreen to force the correct xwayland WM state.
* Also see comment in desktop_surface_fullscreen_requested(). */
if (!shsurf->parent)
kiosk_shell_surface_set_fullscreen(shsurf, NULL);
else if (maximized)
kiosk_shell_surface_set_maximized(shsurf);
else
kiosk_shell_surface_set_normal(shsurf);
}
static void
desktop_surface_minimized_requested(struct weston_desktop_surface *desktop_surface,
void *shell)
{
}
static void
desktop_surface_ping_timeout(struct weston_desktop_client *desktop_client,
void *shell_)
{
}
static void
desktop_surface_pong(struct weston_desktop_client *desktop_client,
void *shell_)
{
}
static void
desktop_surface_set_xwayland_position(struct weston_desktop_surface *desktop_surface,
int32_t x, int32_t y, void *shell)
{
struct kiosk_shell_surface *shsurf =
weston_desktop_surface_get_user_data(desktop_surface);
shsurf->xwayland.x = x;
shsurf->xwayland.y = y;
shsurf->xwayland.is_set = true;
}
static const struct weston_desktop_api kiosk_shell_desktop_api = {
.struct_size = sizeof(struct weston_desktop_api),
.surface_added = desktop_surface_added,
.surface_removed = desktop_surface_removed,
.committed = desktop_surface_committed,
.move = desktop_surface_move,
.resize = desktop_surface_resize,
.set_parent = desktop_surface_set_parent,
.fullscreen_requested = desktop_surface_fullscreen_requested,
.maximized_requested = desktop_surface_maximized_requested,
.minimized_requested = desktop_surface_minimized_requested,
.ping_timeout = desktop_surface_ping_timeout,
.pong = desktop_surface_pong,
.set_xwayland_position = desktop_surface_set_xwayland_position,
};
/*
* kiosk_shell
*/
static struct kiosk_shell_output *
kiosk_shell_find_shell_output(struct kiosk_shell *shell,
struct weston_output *output)
{
struct kiosk_shell_output *shoutput;
wl_list_for_each(shoutput, &shell->output_list, link) {
if (shoutput->output == output)
return shoutput;
}
return NULL;
}
static void
kiosk_shell_activate_view(struct kiosk_shell *shell,
struct weston_view *view,
struct weston_seat *seat,
uint32_t flags)
{
struct weston_surface *main_surface =
weston_surface_get_main_surface(view->surface);
struct kiosk_shell_surface *shsurf =
get_kiosk_shell_surface(main_surface);
struct kiosk_shell_seat *kiosk_seat =
get_kiosk_shell_seat(seat);
if (!shsurf)
return;
/* If the view belongs to a child window bring it to the front.
* We don't do this for the parent top-level, since that would
* obscure all children.
*/
if (shsurf->parent) {
weston_layer_entry_remove(&view->layer_link);
weston_layer_entry_insert(&shell->normal_layer.view_list,
&view->layer_link);
weston_view_geometry_dirty(view);
weston_surface_damage(view->surface);
}
if (kiosk_seat)
kiosk_shell_surface_activate(shsurf, kiosk_seat, flags);
}
static void
kiosk_shell_click_to_activate_binding(struct weston_pointer *pointer,
const struct timespec *time,
uint32_t button, void *data)
{
struct kiosk_shell *shell = data;
if (pointer->grab != &pointer->default_grab)
return;
if (pointer->focus == NULL)
return;
kiosk_shell_activate_view(shell, pointer->focus, pointer->seat,
WESTON_ACTIVATE_FLAG_CLICKED);
}
static void
kiosk_shell_touch_to_activate_binding(struct weston_touch *touch,
const struct timespec *time,
void *data)
{
struct kiosk_shell *shell = data;
if (touch->grab != &touch->default_grab)
return;
if (touch->focus == NULL)
return;
kiosk_shell_activate_view(shell, touch->focus, touch->seat,
WESTON_ACTIVATE_FLAG_NONE);
}
static void
kiosk_shell_add_bindings(struct kiosk_shell *shell)
{
weston_compositor_add_button_binding(shell->compositor, BTN_LEFT, 0,
kiosk_shell_click_to_activate_binding,
shell);
weston_compositor_add_button_binding(shell->compositor, BTN_RIGHT, 0,
kiosk_shell_click_to_activate_binding,
shell);
weston_compositor_add_touch_binding(shell->compositor, 0,
kiosk_shell_touch_to_activate_binding,
shell);
}
static void
kiosk_shell_handle_output_created(struct wl_listener *listener, void *data)
{
struct kiosk_shell *shell =
container_of(listener, struct kiosk_shell, output_created_listener);
struct weston_output *output = data;
kiosk_shell_output_create(shell, output);
}
static void
kiosk_shell_handle_output_resized(struct wl_listener *listener, void *data)
{
struct kiosk_shell *shell =
container_of(listener, struct kiosk_shell, output_resized_listener);
struct weston_output *output = data;
struct kiosk_shell_output *shoutput =
kiosk_shell_find_shell_output(shell, output);
struct weston_view *view;
kiosk_shell_output_recreate_background(shoutput);
wl_list_for_each(view, &shell->normal_layer.view_list.link,
layer_link.link) {
struct kiosk_shell_surface *shsurf;
if (view->output != output)
continue;
shsurf = get_kiosk_shell_surface(view->surface);
if (!shsurf)
continue;
kiosk_shell_surface_reconfigure_for_output(shsurf);
}
}
static void
kiosk_shell_handle_output_moved(struct wl_listener *listener, void *data)
{
struct kiosk_shell *shell =
container_of(listener, struct kiosk_shell, output_moved_listener);
struct weston_output *output = data;
struct weston_view *view;
wl_list_for_each(view, &shell->background_layer.view_list.link,
layer_link.link) {
if (view->output != output)
continue;
weston_view_set_position(view,
view->geometry.x + output->move_x,
view->geometry.y + output->move_y);
}
wl_list_for_each(view, &shell->normal_layer.view_list.link,
layer_link.link) {
if (view->output != output)
continue;
weston_view_set_position(view,
view->geometry.x + output->move_x,
view->geometry.y + output->move_y);
}
}
static void
kiosk_shell_handle_seat_created(struct wl_listener *listener, void *data)
{
struct weston_seat *seat = data;
struct kiosk_shell *shell =
container_of(listener, struct kiosk_shell, seat_created_listener);
kiosk_shell_seat_create(shell, seat);
}
static void
kiosk_shell_destroy_surfaces_on_layer(struct weston_layer *layer)
{
struct weston_view *view, *view_next;
wl_list_for_each_safe(view, view_next, &layer->view_list.link, layer_link.link) {
struct kiosk_shell_surface *shsurf =
get_kiosk_shell_surface(view->surface);
assert(shsurf);
kiosk_shell_surface_destroy(shsurf);
}
weston_layer_fini(layer);
}
static void
kiosk_shell_destroy(struct wl_listener *listener, void *data)
{
struct kiosk_shell *shell =
container_of(listener, struct kiosk_shell, destroy_listener);
struct kiosk_shell_output *shoutput, *tmp;
struct kiosk_shell_seat *shseat, *shseat_next;
wl_list_remove(&shell->destroy_listener.link);
wl_list_remove(&shell->output_created_listener.link);
wl_list_remove(&shell->output_resized_listener.link);
wl_list_remove(&shell->output_moved_listener.link);
wl_list_remove(&shell->seat_created_listener.link);
wl_list_remove(&shell->transform_listener.link);
wl_list_for_each_safe(shoutput, tmp, &shell->output_list, link) {
kiosk_shell_output_destroy(shoutput);
}
/* bg layer doesn't contain a weston_desktop_surface, and
* kiosk_shell_output_destroy() takes care of destroying it, we're just
* doing a weston_layer_fini() here as there might be multiple bg views */
weston_layer_fini(&shell->background_layer);
kiosk_shell_destroy_surfaces_on_layer(&shell->normal_layer);
kiosk_shell_destroy_surfaces_on_layer(&shell->inactive_layer);
wl_list_for_each_safe(shseat, shseat_next, &shell->seat_list, link) {
kiosk_shell_seat_destroy(shseat);
}
weston_desktop_destroy(shell->desktop);
free(shell);
}
WL_EXPORT int
wet_shell_init(struct weston_compositor *ec,
int *argc, char *argv[])
{
struct kiosk_shell *shell;
struct weston_seat *seat;
struct weston_output *output;
const char *config_file;
shell = zalloc(sizeof *shell);
if (shell == NULL)
return -1;
shell->compositor = ec;
if (!weston_compositor_add_destroy_listener_once(ec,
&shell->destroy_listener,
kiosk_shell_destroy)) {
free(shell);
return 0;
}
shell->transform_listener.notify = transform_handler;
wl_signal_add(&ec->transform_signal, &shell->transform_listener);
config_file = weston_config_get_name_from_env();
shell->config = weston_config_parse(config_file);
weston_layer_init(&shell->background_layer, ec);
weston_layer_init(&shell->normal_layer, ec);
weston_layer_init(&shell->inactive_layer, ec);
weston_layer_set_position(&shell->background_layer,
WESTON_LAYER_POSITION_BACKGROUND);
weston_layer_set_position(&shell->inactive_layer,
WESTON_LAYER_POSITION_HIDDEN);
/* We use the NORMAL layer position, so that xwayland surfaces, which
* are placed at NORMAL+1, are visible. */
weston_layer_set_position(&shell->normal_layer,
WESTON_LAYER_POSITION_NORMAL);
shell->desktop = weston_desktop_create(ec, &kiosk_shell_desktop_api,
shell);
if (!shell->desktop)
return -1;
wl_list_init(&shell->seat_list);
wl_list_for_each(seat, &ec->seat_list, link)
kiosk_shell_seat_create(shell, seat);
shell->seat_created_listener.notify = kiosk_shell_handle_seat_created;
wl_signal_add(&ec->seat_created_signal, &shell->seat_created_listener);
wl_list_init(&shell->output_list);
wl_list_for_each(output, &ec->output_list, link)
kiosk_shell_output_create(shell, output);
shell->output_created_listener.notify = kiosk_shell_handle_output_created;
wl_signal_add(&ec->output_created_signal, &shell->output_created_listener);
shell->output_resized_listener.notify = kiosk_shell_handle_output_resized;
wl_signal_add(&ec->output_resized_signal, &shell->output_resized_listener);
shell->output_moved_listener.notify = kiosk_shell_handle_output_moved;
wl_signal_add(&ec->output_moved_signal, &shell->output_moved_listener);
screenshooter_create(ec);
kiosk_shell_add_bindings(shell);
return 0;
}