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backend/wayland: add wlr_wl_output_create_from_surface()

Browse Source 
By using this function, a compositor can display a wlroots
compositor in a sub-surface, for instance.
master
Simon Ser 1 year ago
parent 4f88886199
commit 8678633fc9
3 changed files with 89 additions and 30 deletions
Show Stats Download Patch File Download Diff File

105
backend/wayland/output.c
Unescape View File

@ -668,9 +668,15 @@ static void output_destroy(struct wlr_output *wlr_output) {
if (output->zxdg_toplevel_decoration_v1) {
zxdg_toplevel_decoration_v1_destroy(output->zxdg_toplevel_decoration_v1);
}
xdg_toplevel_destroy(output->xdg_toplevel);
xdg_surface_destroy(output->xdg_surface);
wl_surface_destroy(output->surface);
if (output->xdg_toplevel) {
xdg_toplevel_destroy(output->xdg_toplevel);
}
if (output->xdg_surface) {
xdg_surface_destroy(output->xdg_surface);
}
if (output->own_surface) {
wl_surface_destroy(output->surface);
}
wl_display_flush(output->backend->remote_display);
free(output);
}
@ -751,15 +757,10 @@ static const struct xdg_toplevel_listener xdg_toplevel_listener = {
.close = xdg_toplevel_handle_close,
};
struct wlr_output *wlr_wl_output_create(struct wlr_backend *wlr_backend) {
struct wlr_wl_backend *backend = get_wl_backend_from_backend(wlr_backend);
if (!backend->started) {
++backend->requested_outputs;
return NULL;
}
struct wlr_wl_output *output;
if (!(output = calloc(sizeof(struct wlr_wl_output), 1))) {
static struct wlr_wl_output *output_create(struct wlr_wl_backend *backend,
struct wl_surface *surface) {
struct wlr_wl_output *output = calloc(1, sizeof(*output));
if (output == NULL) {
wlr_log(WLR_ERROR, "Failed to allocate wlr_wl_output");
return NULL;
}
@ -781,22 +782,60 @@ struct wlr_output *wlr_wl_output_create(struct wlr_backend *wlr_backend) {
snprintf(description, sizeof(description), "Wayland output %zu", output_num);
wlr_output_set_description(wlr_output, description);
output->surface = surface;
output->backend = backend;
wl_list_init(&output->presentation_feedbacks);
output->surface = wl_compositor_create_surface(backend->compositor);
if (!output->surface) {
wlr_log_errno(WLR_ERROR, "Could not create output surface");
goto error;
}
wl_proxy_set_tag((struct wl_proxy *)output->surface, &surface_tag);
wl_surface_set_user_data(output->surface, output);
wl_list_insert(&backend->outputs, &output->link);
return output;
}
static void output_start(struct wlr_wl_output *output) {
struct wlr_output *wlr_output = &output->wlr_output;
struct wlr_wl_backend *backend = output->backend;
wl_signal_emit_mutable(&backend->backend.events.new_output, wlr_output);
struct wlr_wl_seat *seat;
wl_list_for_each(seat, &backend->seats, link) {
if (seat->wl_pointer) {
create_pointer(seat, output);
}
}
}
struct wlr_output *wlr_wl_output_create(struct wlr_backend *wlr_backend) {
struct wlr_wl_backend *backend = get_wl_backend_from_backend(wlr_backend);
if (!backend->started) {
++backend->requested_outputs;
return NULL;
}
struct wl_surface *surface = wl_compositor_create_surface(backend->compositor);
if (surface == NULL) {
wlr_log(WLR_ERROR, "Could not create output surface");
return NULL;
}
struct wlr_wl_output *output = output_create(backend, surface);
if (output == NULL) {
wl_surface_destroy(surface);
return NULL;
}
output->own_surface = true;
output->xdg_surface =
xdg_wm_base_get_xdg_surface(backend->xdg_wm_base, output->surface);
if (!output->xdg_surface) {
wlr_log_errno(WLR_ERROR, "Could not get xdg surface");
goto error;
}
output->xdg_toplevel =
xdg_surface_get_toplevel(output->xdg_surface);
if (!output->xdg_toplevel) {
@ -816,7 +855,7 @@ struct wlr_output *wlr_wl_output_create(struct wlr_backend *wlr_backend) {
ZXDG_TOPLEVEL_DECORATION_V1_MODE_SERVER_SIDE);
}
wlr_wl_output_set_title(wlr_output, NULL);
wlr_wl_output_set_title(&output->wlr_output, NULL);
xdg_toplevel_set_app_id(output->xdg_toplevel, "wlroots");
xdg_surface_add_listener(output->xdg_surface,
@ -827,16 +866,7 @@ struct wlr_output *wlr_wl_output_create(struct wlr_backend *wlr_backend) {
wl_display_roundtrip(output->backend->remote_display);
wl_list_insert(&backend->outputs, &output->link);
wl_signal_emit_mutable(&backend->backend.events.new_output, wlr_output);
struct wlr_wl_seat *seat;
wl_list_for_each(seat, &backend->seats, link) {
if (seat->wl_pointer) {
create_pointer(seat, output);
}
}
output_start(output);
// TODO: let the compositor do this bit
if (backend->activation_v1 && backend->activation_token) {
@ -844,15 +874,32 @@ struct wlr_output *wlr_wl_output_create(struct wlr_backend *wlr_backend) {
backend->activation_token, output->surface);
}
return wlr_output;
return &output->wlr_output;
error:
wlr_output_destroy(&output->wlr_output);
return NULL;
}
struct wlr_output *wlr_wl_output_create_from_surface(struct wlr_backend *wlr_backend,
struct wl_surface *surface) {
struct wlr_wl_backend *backend = get_wl_backend_from_backend(wlr_backend);
assert(backend->started);
struct wlr_wl_output *output = output_create(backend, surface);
if (output == NULL) {
wl_surface_destroy(surface);
return NULL;
}
output_start(output);
return &output->wlr_output;
}
void wlr_wl_output_set_title(struct wlr_output *output, const char *title) {
struct wlr_wl_output *wl_output = get_wl_output_from_output(output);
assert(wl_output->xdg_toplevel != NULL);
char wl_title[32];
if (title == NULL) {

1
include/backend/wayland.h
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@ -84,6 +84,7 @@ struct wlr_wl_output {
struct wl_list link;
struct wl_surface *surface;
bool own_surface;
struct wl_callback *frame_callback;
struct xdg_surface *xdg_surface;
struct xdg_toplevel *xdg_toplevel;

13
include/wlr/backend/wayland.h
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@ -24,13 +24,24 @@ struct wlr_backend *wlr_wl_backend_create(struct wl_display *display,
struct wl_display *wlr_wl_backend_get_remote_display(struct wlr_backend *backend);
/**
* Adds a new output to this backend. You may remove outputs by destroying them.
* Adds a new output to this backend.
*
* This creates a new xdg_toplevel in the parent Wayland compositor.
*
* You may remove outputs by destroying them.
*
* Note that if called before initializing the backend, this will return NULL
* and your outputs will be created during initialization (and given to you via
* the new_output signal).
*/
struct wlr_output *wlr_wl_output_create(struct wlr_backend *backend);
/**
* Create a new output from an existing struct wl_surface.
*/
struct wlr_output *wlr_wl_output_create_from_surface(struct wlr_backend *backend,
struct wl_surface *surface);
/**
* Check whether the provided backend is a Wayland backend.
*/

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