weston/fullscreen-shell/fullscreen-shell.c

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/*
* Copyright © 2013 Jason Ekstrand
*
* 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 "config.h"
#include <sys/wait.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include "compositor.h"
#include "fullscreen-shell-server-protocol.h"
struct fullscreen_shell {
struct wl_client *client;
struct wl_listener client_destroyed;
struct weston_compositor *compositor;
struct weston_layer layer;
struct wl_list output_list;
struct wl_listener output_created_listener;
struct wl_listener seat_created_listener;
};
struct fs_output {
struct fullscreen_shell *shell;
struct wl_list link;
struct weston_output *output;
struct wl_listener output_destroyed;
struct {
struct weston_surface *surface;
struct wl_listener surface_destroyed;
struct wl_resource *mode_feedback;
int presented_for_mode;
enum _wl_fullscreen_shell_present_method method;
int32_t framerate;
} pending;
struct weston_surface *surface;
struct wl_listener surface_destroyed;
struct weston_view *view;
struct weston_view *black_view;
struct weston_transform transform; /* matrix from x, y */
int presented_for_mode;
enum _wl_fullscreen_shell_present_method method;
uint32_t framerate;
};
struct pointer_focus_listener {
struct fullscreen_shell *shell;
struct wl_listener pointer_focus;
struct wl_listener seat_caps;
struct wl_listener seat_destroyed;
};
static void
pointer_focus_changed(struct wl_listener *listener, void *data)
{
struct weston_pointer *pointer = data;
if (pointer->focus && pointer->focus->surface->resource)
weston_surface_activate(pointer->focus->surface, pointer->seat);
}
static void
seat_caps_changed(struct wl_listener *l, void *data)
{
struct weston_seat *seat = data;
struct pointer_focus_listener *listener;
struct fs_output *fsout;
listener = container_of(l, struct pointer_focus_listener, seat_caps);
/* no pointer */
if (seat->pointer) {
if (!listener->pointer_focus.link.prev) {
wl_signal_add(&seat->pointer->focus_signal,
&listener->pointer_focus);
}
} else {
if (listener->pointer_focus.link.prev) {
wl_list_remove(&listener->pointer_focus.link);
}
}
if (seat->keyboard && seat->keyboard->focus != NULL) {
wl_list_for_each(fsout, &listener->shell->output_list, link) {
if (fsout->surface) {
weston_surface_activate(fsout->surface, seat);
return;
}
}
}
}
static void
seat_destroyed(struct wl_listener *l, void *data)
{
struct pointer_focus_listener *listener;
listener = container_of(l, struct pointer_focus_listener,
seat_destroyed);
free(listener);
}
static void
seat_created(struct wl_listener *l, void *data)
{
struct weston_seat *seat = data;
struct pointer_focus_listener *listener;
listener = malloc(sizeof *listener);
if (!listener)
return;
memset(listener, 0, sizeof *listener);
listener->shell = container_of(l, struct fullscreen_shell,
seat_created_listener);
listener->pointer_focus.notify = pointer_focus_changed;
listener->seat_caps.notify = seat_caps_changed;
listener->seat_destroyed.notify = seat_destroyed;
wl_signal_add(&seat->destroy_signal, &listener->seat_destroyed);
wl_signal_add(&seat->updated_caps_signal, &listener->seat_caps);
seat_caps_changed(&listener->seat_caps, seat);
}
static void
black_surface_configure(struct weston_surface *es, int32_t sx, int32_t sy)
{
}
static struct weston_view *
create_black_surface(struct weston_compositor *ec, struct fs_output *fsout,
float x, float y, int w, int h)
{
struct weston_surface *surface = NULL;
struct weston_view *view;
surface = weston_surface_create(ec);
if (surface == NULL) {
weston_log("no memory\n");
return NULL;
}
view = weston_view_create(surface);
if (!view) {
weston_surface_destroy(surface);
weston_log("no memory\n");
return NULL;
}
surface->configure = black_surface_configure;
surface->configure_private = fsout;
weston_surface_set_color(surface, 0.0f, 0.0f, 0.0f, 1.0f);
pixman_region32_fini(&surface->opaque);
pixman_region32_init_rect(&surface->opaque, 0, 0, w, h);
pixman_region32_fini(&surface->input);
pixman_region32_init_rect(&surface->input, 0, 0, w, h);
weston_surface_set_size(surface, w, h);
weston_view_set_position(view, x, y);
return view;
}
static void
fs_output_set_surface(struct fs_output *fsout, struct weston_surface *surface,
enum _wl_fullscreen_shell_present_method method,
int32_t framerate, int presented_for_mode);
static void
fs_output_apply_pending(struct fs_output *fsout);
static void
fs_output_clear_pending(struct fs_output *fsout);
static void
fs_output_destroy(struct fs_output *fsout)
{
fs_output_set_surface(fsout, NULL, 0, 0, 0);
fs_output_clear_pending(fsout);
wl_list_remove(&fsout->link);
if (fsout->output)
wl_list_remove(&fsout->output_destroyed.link);
}
static void
output_destroyed(struct wl_listener *listener, void *data)
{
struct fs_output *output = container_of(listener,
struct fs_output,
output_destroyed);
fs_output_destroy(output);
}
static void
surface_destroyed(struct wl_listener *listener, void *data)
{
struct fs_output *fsout = container_of(listener,
struct fs_output,
surface_destroyed);
fsout->surface = NULL;
fsout->view = NULL;
}
static void
pending_surface_destroyed(struct wl_listener *listener, void *data)
{
struct fs_output *fsout = container_of(listener,
struct fs_output,
pending.surface_destroyed);
fsout->pending.surface = NULL;
}
static struct fs_output *
fs_output_create(struct fullscreen_shell *shell, struct weston_output *output)
{
struct fs_output *fsout;
fsout = malloc(sizeof *fsout);
if (!fsout)
return NULL;
memset(fsout, 0, sizeof *fsout);
fsout->shell = shell;
wl_list_insert(&shell->output_list, &fsout->link);
fsout->output = output;
fsout->output_destroyed.notify = output_destroyed;
wl_signal_add(&output->destroy_signal, &fsout->output_destroyed);
fsout->surface_destroyed.notify = surface_destroyed;
fsout->pending.surface_destroyed.notify = pending_surface_destroyed;
fsout->black_view = create_black_surface(shell->compositor, fsout,
output->x, output->y,
output->width, output->height);
weston_layer_entry_insert(&shell->layer.view_list,
&fsout->black_view->layer_link);
wl_list_init(&fsout->transform.link);
return fsout;
}
static struct fs_output *
fs_output_for_output(struct weston_output *output)
{
struct wl_listener *listener;
if (!output)
return NULL;
listener = wl_signal_get(&output->destroy_signal, output_destroyed);
return container_of(listener, struct fs_output, output_destroyed);
}
static void
restore_output_mode(struct weston_output *output)
{
if (output->original_mode)
weston_output_mode_switch_to_native(output);
}
/*
* Returns the bounding box of a surface and all its sub-surfaces,
* in the surface coordinates system. */
static void
surface_subsurfaces_boundingbox(struct weston_surface *surface, int32_t *x,
int32_t *y, int32_t *w, int32_t *h) {
pixman_region32_t region;
pixman_box32_t *box;
struct weston_subsurface *subsurface;
pixman_region32_init_rect(&region, 0, 0,
surface->width,
surface->height);
wl_list_for_each(subsurface, &surface->subsurface_list, parent_link) {
pixman_region32_union_rect(&region, &region,
subsurface->position.x,
subsurface->position.y,
subsurface->surface->width,
subsurface->surface->height);
}
box = pixman_region32_extents(&region);
if (x)
*x = box->x1;
if (y)
*y = box->y1;
if (w)
*w = box->x2 - box->x1;
if (h)
*h = box->y2 - box->y1;
pixman_region32_fini(&region);
}
static void
fs_output_center_view(struct fs_output *fsout)
{
int32_t surf_x, surf_y, surf_width, surf_height;
float x, y;
struct weston_output *output = fsout->output;
surface_subsurfaces_boundingbox(fsout->view->surface, &surf_x, &surf_y,
&surf_width, &surf_height);
x = output->x + (output->width - surf_width) / 2 - surf_x / 2;
y = output->y + (output->height - surf_height) / 2 - surf_y / 2;
weston_view_set_position(fsout->view, x, y);
}
static void
fs_output_scale_view(struct fs_output *fsout, float width, float height)
{
float x, y;
int32_t surf_x, surf_y, surf_width, surf_height;
struct weston_matrix *matrix;
struct weston_view *view = fsout->view;
struct weston_output *output = fsout->output;
surface_subsurfaces_boundingbox(view->surface, &surf_x, &surf_y,
&surf_width, &surf_height);
if (output->width == surf_width && output->height == surf_height) {
weston_view_set_position(view,
fsout->output->x - surf_x,
fsout->output->y - surf_y);
} else {
matrix = &fsout->transform.matrix;
weston_matrix_init(matrix);
weston_matrix_scale(matrix, width / surf_width,
height / surf_height, 1);
wl_list_remove(&fsout->transform.link);
wl_list_insert(&fsout->view->geometry.transformation_list,
&fsout->transform.link);
x = output->x + (output->width - width) / 2 - surf_x;
y = output->y + (output->height - height) / 2 - surf_y;
weston_view_set_position(view, x, y);
}
}
static void
fs_output_configure(struct fs_output *fsout, struct weston_surface *surface);
static void
fs_output_configure_simple(struct fs_output *fsout,
struct weston_surface *configured_surface)
{
struct weston_output *output = fsout->output;
float output_aspect, surface_aspect;
int32_t surf_x, surf_y, surf_width, surf_height;
if (fsout->pending.surface == configured_surface)
fs_output_apply_pending(fsout);
assert(fsout->view);
restore_output_mode(fsout->output);
wl_list_remove(&fsout->transform.link);
wl_list_init(&fsout->transform.link);
surface_subsurfaces_boundingbox(fsout->view->surface,
&surf_x, &surf_y,
&surf_width, &surf_height);
output_aspect = (float) output->width / (float) output->height;
surface_aspect = (float) surf_width / (float) surf_height;
switch (fsout->method) {
case _WL_FULLSCREEN_SHELL_PRESENT_METHOD_DEFAULT:
case _WL_FULLSCREEN_SHELL_PRESENT_METHOD_CENTER:
fs_output_center_view(fsout);
break;
case _WL_FULLSCREEN_SHELL_PRESENT_METHOD_ZOOM:
if (output_aspect < surface_aspect)
fs_output_scale_view(fsout,
output->width,
output->width / surface_aspect);
else
fs_output_scale_view(fsout,
output->height * surface_aspect,
output->height);
break;
case _WL_FULLSCREEN_SHELL_PRESENT_METHOD_ZOOM_CROP:
if (output_aspect < surface_aspect)
fs_output_scale_view(fsout,
output->height * surface_aspect,
output->height);
else
fs_output_scale_view(fsout,
output->width,
output->width / surface_aspect);
break;
case _WL_FULLSCREEN_SHELL_PRESENT_METHOD_STRETCH:
fs_output_scale_view(fsout, output->width, output->height);
break;
default:
break;
}
weston_view_set_position(fsout->black_view,
fsout->output->x - surf_x,
fsout->output->y - surf_y);
weston_surface_set_size(fsout->black_view->surface,
fsout->output->width,
fsout->output->height);
}
static void
fs_output_configure_for_mode(struct fs_output *fsout,
struct weston_surface *configured_surface)
{
int32_t surf_x, surf_y, surf_width, surf_height;
struct weston_mode mode;
int ret;
if (fsout->pending.surface != configured_surface) {
/* Nothing to really reconfigure. We'll just recenter the
* view in case they played with subsurfaces */
fs_output_center_view(fsout);
return;
}
/* We have a pending surface */
surface_subsurfaces_boundingbox(fsout->pending.surface,
&surf_x, &surf_y,
&surf_width, &surf_height);
mode.flags = 0;
mode.width = surf_width * fsout->output->native_scale;
mode.height = surf_height * fsout->output->native_scale;
mode.refresh = fsout->pending.framerate;
ret = weston_output_mode_switch_to_temporary(fsout->output, &mode,
fsout->output->native_scale);
if (ret != 0) {
/* The mode switch failed. Clear the pending and
* reconfigure as per normal */
if (fsout->pending.mode_feedback) {
_wl_fullscreen_shell_mode_feedback_send_mode_failed(
fsout->pending.mode_feedback);
wl_resource_destroy(fsout->pending.mode_feedback);
fsout->pending.mode_feedback = NULL;
}
fs_output_clear_pending(fsout);
return;
}
if (fsout->pending.mode_feedback) {
_wl_fullscreen_shell_mode_feedback_send_mode_successful(
fsout->pending.mode_feedback);
wl_resource_destroy(fsout->pending.mode_feedback);
fsout->pending.mode_feedback = NULL;
}
fs_output_apply_pending(fsout);
weston_view_set_position(fsout->view,
fsout->output->x - surf_x,
fsout->output->y - surf_y);
}
static void
fs_output_configure(struct fs_output *fsout,
struct weston_surface *surface)
{
if (fsout->pending.surface == surface) {
if (fsout->pending.presented_for_mode)
fs_output_configure_for_mode(fsout, surface);
else
fs_output_configure_simple(fsout, surface);
} else {
if (fsout->presented_for_mode)
fs_output_configure_for_mode(fsout, surface);
else
fs_output_configure_simple(fsout, surface);
}
weston_output_schedule_repaint(fsout->output);
}
static void
configure_presented_surface(struct weston_surface *surface, int32_t sx,
int32_t sy)
{
struct fullscreen_shell *shell = surface->configure_private;
struct fs_output *fsout;
if (surface->configure != configure_presented_surface)
return;
wl_list_for_each(fsout, &shell->output_list, link)
if (fsout->surface == surface ||
fsout->pending.surface == surface)
fs_output_configure(fsout, surface);
}
static void
fs_output_apply_pending(struct fs_output *fsout)
{
assert(fsout->pending.surface);
if (fsout->surface && fsout->surface != fsout->pending.surface) {
wl_list_remove(&fsout->surface_destroyed.link);
weston_view_destroy(fsout->view);
fsout->view = NULL;
if (wl_list_empty(&fsout->surface->views)) {
fsout->surface->configure = NULL;
fsout->surface->configure_private = NULL;
}
fsout->surface = NULL;
}
fsout->method = fsout->pending.method;
fsout->framerate = fsout->pending.framerate;
fsout->presented_for_mode = fsout->pending.presented_for_mode;
if (fsout->surface != fsout->pending.surface) {
fsout->surface = fsout->pending.surface;
fsout->view = weston_view_create(fsout->surface);
if (!fsout->view) {
weston_log("no memory\n");
return;
}
wl_signal_add(&fsout->surface->destroy_signal,
&fsout->surface_destroyed);
weston_layer_entry_insert(&fsout->shell->layer.view_list,
&fsout->view->layer_link);
}
fs_output_clear_pending(fsout);
}
static void
fs_output_clear_pending(struct fs_output *fsout)
{
if (!fsout->pending.surface)
return;
if (fsout->pending.mode_feedback) {
_wl_fullscreen_shell_mode_feedback_send_present_cancelled(
fsout->pending.mode_feedback);
wl_resource_destroy(fsout->pending.mode_feedback);
fsout->pending.mode_feedback = NULL;
}
wl_list_remove(&fsout->pending.surface_destroyed.link);
fsout->pending.surface = NULL;
}
static void
fs_output_set_surface(struct fs_output *fsout, struct weston_surface *surface,
enum _wl_fullscreen_shell_present_method method,
int32_t framerate, int presented_for_mode)
{
fs_output_clear_pending(fsout);
if (surface) {
if (!surface->configure) {
surface->configure = configure_presented_surface;
surface->configure_private = fsout->shell;
}
fsout->pending.surface = surface;
wl_signal_add(&fsout->pending.surface->destroy_signal,
&fsout->pending.surface_destroyed);
fsout->pending.method = method;
fsout->pending.framerate = framerate;
fsout->pending.presented_for_mode = presented_for_mode;
} else if (fsout->surface) {
/* we clear immediately */
wl_list_remove(&fsout->surface_destroyed.link);
weston_view_destroy(fsout->view);
fsout->view = NULL;
if (wl_list_empty(&fsout->surface->views)) {
fsout->surface->configure = NULL;
fsout->surface->configure_private = NULL;
}
fsout->surface = NULL;
weston_output_schedule_repaint(fsout->output);
}
}
static void
fullscreen_shell_release(struct wl_client *client,
struct wl_resource *resource)
{
wl_resource_destroy(resource);
}
static void
fullscreen_shell_present_surface(struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *surface_res,
uint32_t method,
struct wl_resource *output_res)
{
struct fullscreen_shell *shell =
wl_resource_get_user_data(resource);
struct weston_output *output;
struct weston_surface *surface;
struct weston_seat *seat;
struct fs_output *fsout;
surface = surface_res ? wl_resource_get_user_data(surface_res) : NULL;
switch(method) {
case _WL_FULLSCREEN_SHELL_PRESENT_METHOD_DEFAULT:
case _WL_FULLSCREEN_SHELL_PRESENT_METHOD_CENTER:
case _WL_FULLSCREEN_SHELL_PRESENT_METHOD_ZOOM:
case _WL_FULLSCREEN_SHELL_PRESENT_METHOD_ZOOM_CROP:
case _WL_FULLSCREEN_SHELL_PRESENT_METHOD_STRETCH:
break;
default:
wl_resource_post_error(resource,
_WL_FULLSCREEN_SHELL_ERROR_INVALID_METHOD,
"Invalid presentation method");
}
if (output_res) {
output = wl_resource_get_user_data(output_res);
fsout = fs_output_for_output(output);
fs_output_set_surface(fsout, surface, method, 0, 0);
} else {
wl_list_for_each(fsout, &shell->output_list, link)
fs_output_set_surface(fsout, surface, method, 0, 0);
}
if (surface) {
wl_list_for_each(seat, &shell->compositor->seat_list, link) {
if (seat->keyboard && seat->keyboard->focus == NULL)
weston_surface_activate(surface, seat);
}
}
}
static void
mode_feedback_destroyed(struct wl_resource *resource)
{
struct fs_output *fsout = wl_resource_get_user_data(resource);
fsout->pending.mode_feedback = NULL;
}
static void
fullscreen_shell_present_surface_for_mode(struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *surface_res,
struct wl_resource *output_res,
int32_t framerate,
uint32_t feedback_id)
{
struct fullscreen_shell *shell =
wl_resource_get_user_data(resource);
struct weston_output *output;
struct weston_surface *surface;
struct weston_seat *seat;
struct fs_output *fsout;
output = wl_resource_get_user_data(output_res);
fsout = fs_output_for_output(output);
if (surface_res == NULL) {
fs_output_set_surface(fsout, NULL, 0, 0, 0);
return;
}
surface = wl_resource_get_user_data(surface_res);
fs_output_set_surface(fsout, surface, 0, framerate, 1);
fsout->pending.mode_feedback =
wl_resource_create(client,
&_wl_fullscreen_shell_mode_feedback_interface,
1, feedback_id);
wl_resource_set_implementation(fsout->pending.mode_feedback, NULL,
fsout, mode_feedback_destroyed);
wl_list_for_each(seat, &shell->compositor->seat_list, link) {
if (seat->keyboard && seat->keyboard->focus == NULL)
weston_surface_activate(surface, seat);
}
}
struct _wl_fullscreen_shell_interface fullscreen_shell_implementation = {
fullscreen_shell_release,
fullscreen_shell_present_surface,
fullscreen_shell_present_surface_for_mode,
};
static void
output_created(struct wl_listener *listener, void *data)
{
struct fullscreen_shell *shell;
shell = container_of(listener, struct fullscreen_shell,
output_created_listener);
fs_output_create(shell, data);
}
static void
client_destroyed(struct wl_listener *listener, void *data)
{
struct fullscreen_shell *shell = container_of(listener,
struct fullscreen_shell,
client_destroyed);
shell->client = NULL;
}
static void
bind_fullscreen_shell(struct wl_client *client, void *data, uint32_t version,
uint32_t id)
{
struct fullscreen_shell *shell = data;
struct wl_resource *resource;
if (shell->client != NULL && shell->client != client)
return;
else if (shell->client == NULL) {
shell->client = client;
wl_client_add_destroy_listener(client, &shell->client_destroyed);
}
resource = wl_resource_create(client, &_wl_fullscreen_shell_interface,
1, id);
wl_resource_set_implementation(resource,
&fullscreen_shell_implementation,
shell, NULL);
if (shell->compositor->capabilities & WESTON_CAP_CURSOR_PLANE)
_wl_fullscreen_shell_send_capability(resource,
_WL_FULLSCREEN_SHELL_CAPABILITY_CURSOR_PLANE);
if (shell->compositor->capabilities & WESTON_CAP_ARBITRARY_MODES)
_wl_fullscreen_shell_send_capability(resource,
_WL_FULLSCREEN_SHELL_CAPABILITY_ARBITRARY_MODES);
}
WL_EXPORT int
module_init(struct weston_compositor *compositor,
int *argc, char *argv[])
{
struct fullscreen_shell *shell;
struct weston_seat *seat;
struct weston_output *output;
shell = malloc(sizeof *shell);
if (shell == NULL)
return -1;
memset(shell, 0, sizeof *shell);
shell->compositor = compositor;
shell->client_destroyed.notify = client_destroyed;
weston_layer_init(&shell->layer, &compositor->cursor_layer.link);
wl_list_init(&shell->output_list);
shell->output_created_listener.notify = output_created;
wl_signal_add(&compositor->output_created_signal,
&shell->output_created_listener);
wl_list_for_each(output, &compositor->output_list, link)
fs_output_create(shell, output);
shell->seat_created_listener.notify = seat_created;
wl_signal_add(&compositor->seat_created_signal,
&shell->seat_created_listener);
wl_list_for_each(seat, &compositor->seat_list, link)
seat_created(NULL, seat);
wl_global_create(compositor->wl_display,
&_wl_fullscreen_shell_interface, 1, shell,
bind_fullscreen_shell);
return 0;
}