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xwayland.c
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xwayland.c
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/*
* Cage: A Wayland kiosk.
*
* Copyright (C) 2018-2020 Jente Hidskes
*
* See the LICENSE file accompanying this file.
*/
#include <stdbool.h>
#include <stdlib.h>
#include <wayland-server-core.h>
#include <wlr/util/log.h>
#include <wlr/xwayland.h>
#include "server.h"
#include "view.h"
#include "xwayland.h"
struct cg_xwayland_view *
xwayland_view_from_view(struct cg_view *view)
{
return (struct cg_xwayland_view *) view;
}
bool
xwayland_view_should_manage(struct cg_view *view)
{
struct cg_xwayland_view *xwayland_view = xwayland_view_from_view(view);
struct wlr_xwayland_surface *xwayland_surface = xwayland_view->xwayland_surface;
return !xwayland_surface->override_redirect;
}
static char *
get_title(struct cg_view *view)
{
struct cg_xwayland_view *xwayland_view = xwayland_view_from_view(view);
return xwayland_view->xwayland_surface->title;
}
static void
get_geometry(struct cg_view *view, int *width_out, int *height_out)
{
struct cg_xwayland_view *xwayland_view = xwayland_view_from_view(view);
struct wlr_xwayland_surface *xsurface = xwayland_view->xwayland_surface;
if (xsurface->surface == NULL) {
*width_out = 0;
*height_out = 0;
return;
}
*width_out = xsurface->surface->current.width;
*height_out = xsurface->surface->current.height;
}
static bool
is_primary(struct cg_view *view)
{
struct cg_xwayland_view *xwayland_view = xwayland_view_from_view(view);
struct wlr_xwayland_surface *parent = xwayland_view->xwayland_surface->parent;
return parent == NULL;
}
static bool
is_transient_for(struct cg_view *child, struct cg_view *parent)
{
if (parent->type != CAGE_XDG_SHELL_VIEW) {
return false;
}
struct cg_xwayland_view *_child = xwayland_view_from_view(child);
struct wlr_xwayland_surface *xwayland_surface = _child->xwayland_surface;
struct cg_xwayland_view *_parent = xwayland_view_from_view(parent);
struct wlr_xwayland_surface *parent_xwayland_surface = _parent->xwayland_surface;
while (xwayland_surface) {
if (xwayland_surface->parent == parent_xwayland_surface) {
return true;
}
xwayland_surface = xwayland_surface->parent;
}
return false;
}
static void
activate(struct cg_view *view, bool activate)
{
struct cg_xwayland_view *xwayland_view = xwayland_view_from_view(view);
wlr_xwayland_surface_activate(xwayland_view->xwayland_surface, activate);
}
static void
maximize(struct cg_view *view, int output_width, int output_height)
{
struct cg_xwayland_view *xwayland_view = xwayland_view_from_view(view);
wlr_xwayland_surface_configure(xwayland_view->xwayland_surface, view->lx, view->ly, output_width,
output_height);
wlr_xwayland_surface_set_maximized(xwayland_view->xwayland_surface, true);
}
static void
destroy(struct cg_view *view)
{
struct cg_xwayland_view *xwayland_view = xwayland_view_from_view(view);
free(xwayland_view);
}
static void
handle_xwayland_surface_request_fullscreen(struct wl_listener *listener, void *data)
{
struct cg_xwayland_view *xwayland_view = wl_container_of(listener, xwayland_view, request_fullscreen);
struct wlr_xwayland_surface *xwayland_surface = xwayland_view->xwayland_surface;
wlr_xwayland_surface_set_fullscreen(xwayland_view->xwayland_surface, xwayland_surface->fullscreen);
}
static void
handle_xwayland_surface_unmap(struct wl_listener *listener, void *data)
{
struct cg_xwayland_view *xwayland_view = wl_container_of(listener, xwayland_view, unmap);
struct cg_view *view = &xwayland_view->view;
view_unmap(view);
}
static void
handle_xwayland_surface_map(struct wl_listener *listener, void *data)
{
struct cg_xwayland_view *xwayland_view = wl_container_of(listener, xwayland_view, map);
struct cg_view *view = &xwayland_view->view;
if (!xwayland_view_should_manage(view)) {
view->lx = xwayland_view->xwayland_surface->x;
view->ly = xwayland_view->xwayland_surface->y;
}
view_map(view, xwayland_view->xwayland_surface->surface);
}
static void
handle_xwayland_surface_destroy(struct wl_listener *listener, void *data)
{
struct cg_xwayland_view *xwayland_view = wl_container_of(listener, xwayland_view, destroy);
struct cg_view *view = &xwayland_view->view;
wl_list_remove(&xwayland_view->destroy.link);
wl_list_remove(&xwayland_view->request_fullscreen.link);
xwayland_view->xwayland_surface = NULL;
view_destroy(view);
}
static const struct cg_view_impl xwayland_view_impl = {
.get_title = get_title,
.get_geometry = get_geometry,
.is_primary = is_primary,
.is_transient_for = is_transient_for,
.activate = activate,
.maximize = maximize,
.destroy = destroy,
};
void
handle_xwayland_associate(struct wl_listener *listener, void *data)
{
struct cg_xwayland_view *xwayland_view = wl_container_of(listener, xwayland_view, associate);
struct wlr_xwayland_surface *xsurface = xwayland_view->xwayland_surface;
xwayland_view->map.notify = handle_xwayland_surface_map;
wl_signal_add(&xsurface->surface->events.map, &xwayland_view->map);
xwayland_view->unmap.notify = handle_xwayland_surface_unmap;
wl_signal_add(&xsurface->surface->events.unmap, &xwayland_view->unmap);
}
void
handle_xwayland_dissociate(struct wl_listener *listener, void *data)
{
struct cg_xwayland_view *xwayland_view = wl_container_of(listener, xwayland_view, dissociate);
wl_list_remove(&xwayland_view->map.link);
wl_list_remove(&xwayland_view->unmap.link);
}
void
handle_xwayland_surface_new(struct wl_listener *listener, void *data)
{
struct cg_server *server = wl_container_of(listener, server, new_xwayland_surface);
struct wlr_xwayland_surface *xwayland_surface = data;
struct cg_xwayland_view *xwayland_view = calloc(1, sizeof(struct cg_xwayland_view));
if (!xwayland_view) {
wlr_log(WLR_ERROR, "Failed to allocate XWayland view");
return;
}
view_init(&xwayland_view->view, server, CAGE_XWAYLAND_VIEW, &xwayland_view_impl);
xwayland_view->xwayland_surface = xwayland_surface;
xwayland_view->associate.notify = handle_xwayland_associate;
wl_signal_add(&xwayland_surface->events.associate, &xwayland_view->associate);
xwayland_view->dissociate.notify = handle_xwayland_dissociate;
wl_signal_add(&xwayland_surface->events.dissociate, &xwayland_view->dissociate);
xwayland_view->destroy.notify = handle_xwayland_surface_destroy;
wl_signal_add(&xwayland_surface->events.destroy, &xwayland_view->destroy);
xwayland_view->request_fullscreen.notify = handle_xwayland_surface_request_fullscreen;
wl_signal_add(&xwayland_surface->events.request_fullscreen, &xwayland_view->request_fullscreen);
}