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#include <assert.h>
#include <stdlib.h>
#include <stdbool.h>
#include <wayland-server.h>
#include <wlr/types/wlr_box.h>
#include <wlr/types/wlr_surface.h>
#include <wlr/xwayland.h>
#include <wlr/util/log.h>
#include "rootston/desktop.h"
#include "rootston/server.h"
static void activate(struct roots_view *view, bool active) {
assert(view->type == ROOTS_XWAYLAND_VIEW);
struct wlr_xwayland *xwayland = view->desktop->xwayland;
wlr_xwayland_surface_activate(xwayland, view->xwayland_surface, active);
}
static void move(struct roots_view *view, double x, double y) {
assert(view->type == ROOTS_XWAYLAND_VIEW);
struct wlr_xwayland_surface *xwayland_surface = view->xwayland_surface;
view->x = x;
view->y = y;
wlr_xwayland_surface_configure(view->desktop->xwayland, xwayland_surface,
x, y, xwayland_surface->width, xwayland_surface->height);
}
static void apply_size_constraints(
struct wlr_xwayland_surface *xwayland_surface, uint32_t width,
uint32_t height, uint32_t *dest_width, uint32_t *dest_height) {
*dest_width = width;
*dest_height = height;
struct wlr_xwayland_surface_size_hints *size_hints =
xwayland_surface->size_hints;
if (size_hints != NULL) {
if (width < (uint32_t)size_hints->min_width) {
*dest_width = size_hints->min_width;
} else if (size_hints->max_width > 0 &&
width > (uint32_t)size_hints->max_width) {
*dest_width = size_hints->max_width;
}
if (height < (uint32_t)size_hints->min_height) {
*dest_height = size_hints->min_height;
} else if (size_hints->max_height > 0 &&
height > (uint32_t)size_hints->max_height) {
*dest_height = size_hints->max_height;
}
}
}
static void resize(struct roots_view *view, uint32_t width, uint32_t height) {
assert(view->type == ROOTS_XWAYLAND_VIEW);
struct wlr_xwayland_surface *xwayland_surface = view->xwayland_surface;
uint32_t contrained_width, contrained_height;
apply_size_constraints(xwayland_surface, width, height, &contrained_width,
&contrained_height);
wlr_xwayland_surface_configure(view->desktop->xwayland, xwayland_surface,
xwayland_surface->x, xwayland_surface->y, contrained_width,
contrained_height);
}
static void move_resize(struct roots_view *view, double x, double y,
uint32_t width, uint32_t height) {
assert(view->type == ROOTS_XWAYLAND_VIEW);
struct wlr_xwayland_surface *xwayland_surface = view->xwayland_surface;
uint32_t contrained_width, contrained_height;
apply_size_constraints(xwayland_surface, width, height, &contrained_width,
&contrained_height);
x = x + width - contrained_width;
y = y + height - contrained_height;
view->x = x;
view->y = y;
wlr_xwayland_surface_configure(view->desktop->xwayland, xwayland_surface,
x, y, contrained_width, contrained_height);
}
static void close(struct roots_view *view) {
assert(view->type == ROOTS_XWAYLAND_VIEW);
wlr_xwayland_surface_close(view->desktop->xwayland, view->xwayland_surface);
}
static void maximize(struct roots_view *view, bool maximized) {
assert(view->type == ROOTS_XWAYLAND_VIEW);
wlr_xwayland_surface_set_maximized(view->desktop->xwayland,
view->xwayland_surface, maximized);
}
static void handle_destroy(struct wl_listener *listener, void *data) {
struct roots_xwayland_surface *roots_surface =
wl_container_of(listener, roots_surface, destroy);
view_teardown(roots_surface->view);
wl_list_remove(&roots_surface->destroy.link);
wl_list_remove(&roots_surface->map_notify.link);
wl_list_remove(&roots_surface->unmap_notify.link);
view_destroy(roots_surface->view);
free(roots_surface);
}
static void handle_request_configure(struct wl_listener *listener, void *data) {
struct roots_xwayland_surface *roots_surface =
wl_container_of(listener, roots_surface, request_configure);
struct wlr_xwayland_surface *xwayland_surface =
roots_surface->view->xwayland_surface;
struct wlr_xwayland_surface_configure_event *event = data;
roots_surface->view->x = (double)event->x;
roots_surface->view->y = (double)event->y;
wlr_xwayland_surface_configure(roots_surface->view->desktop->xwayland,
xwayland_surface, event->x, event->y, event->width, event->height);
}
// XXX Needs deep refactoring to get this better. We need to select the correct
// seat based on seat pointer focus, but interactive moving and resizing is not
// yet seat aware. Even then, we can only guess because X11 events don't give us
// enough wayland info to know for sure.
static struct wlr_cursor *guess_cursor_for_view(struct roots_view *view) {
struct roots_input *input = view->desktop->server->input;
size_t len = sizeof(input->input_events) / sizeof(*input->input_events);
for (size_t i = 0; i < len; i++) {
struct wlr_cursor *cursor = input->input_events[i].cursor;
if (cursor) {
int width = view->xwayland_surface->surface->current->width;
int height = view->xwayland_surface->surface->current->height;
if (cursor->x > view->x && cursor->y > view->y &&
cursor->x < view->x + width &&
cursor->y < view->y + height) {
return cursor;
}
}
}
return NULL;
}
static void handle_request_move(struct wl_listener *listener, void *data) {
struct roots_xwayland_surface *roots_surface =
wl_container_of(listener, roots_surface, request_move);
struct roots_view *view = roots_surface->view;
struct roots_input *input = view->desktop->server->input;
struct wlr_cursor *cursor = guess_cursor_for_view(view);
if (!cursor || input->mode != ROOTS_CURSOR_PASSTHROUGH) {
return;
}
view_begin_move(input, cursor, view);
}
static void handle_request_resize(struct wl_listener *listener, void *data) {
struct roots_xwayland_surface *roots_surface =
wl_container_of(listener, roots_surface, request_resize);
struct roots_view *view = roots_surface->view;
struct roots_input *input = view->desktop->server->input;
struct wlr_cursor *cursor = guess_cursor_for_view(view);
struct wlr_xwayland_resize_event *e = data;
if (!cursor || input->mode != ROOTS_CURSOR_PASSTHROUGH) {
return;
}
view_begin_resize(input, cursor, view, e->edges);
}
static void handle_request_maximize(struct wl_listener *listener, void *data) {
struct roots_xwayland_surface *roots_surface =
wl_container_of(listener, roots_surface, request_maximize);
struct roots_view *view = roots_surface->view;
struct wlr_xwayland_surface *xwayland_surface = view->xwayland_surface;
bool maximized = xwayland_surface->maximized_vert &&
xwayland_surface->maximized_horz;
view_maximize(view, maximized);
}
static void handle_map_notify(struct wl_listener *listener, void *data) {
struct roots_xwayland_surface *roots_surface =
wl_container_of(listener, roots_surface, map_notify);
struct roots_view *view = roots_surface->view;
struct wlr_xwayland_surface *xsurface = view->xwayland_surface;
struct roots_desktop *desktop = view->desktop;
view->wlr_surface = xsurface->surface;
view->x = (double)xsurface->x;
view->y = (double)xsurface->y;
wlr_list_push(desktop->views, roots_surface->view);
}
static void handle_unmap_notify(struct wl_listener *listener, void *data) {
struct roots_xwayland_surface *roots_surface =
wl_container_of(listener, roots_surface, unmap_notify);
struct roots_desktop *desktop = roots_surface->view->desktop;
roots_surface->view->wlr_surface = NULL;
for (size_t i = 0; i < desktop->views->length; i++) {
if (desktop->views->items[i] == roots_surface->view) {
wlr_list_del(desktop->views, i);
break;
}
}
}
void handle_xwayland_surface(struct wl_listener *listener, void *data) {
struct roots_desktop *desktop =
wl_container_of(listener, desktop, xwayland_surface);
struct wlr_xwayland_surface *surface = data;
wlr_log(L_DEBUG, "new xwayland surface: title=%s, class=%s, instance=%s",
surface->title, surface->class, surface->instance);
struct roots_xwayland_surface *roots_surface =
calloc(1, sizeof(struct roots_xwayland_surface));
if (roots_surface == NULL) {
return;
}
roots_surface->destroy.notify = handle_destroy;
wl_signal_add(&surface->events.destroy, &roots_surface->destroy);
roots_surface->request_configure.notify = handle_request_configure;
wl_signal_add(&surface->events.request_configure,
&roots_surface->request_configure);
roots_surface->map_notify.notify = handle_map_notify;
wl_signal_add(&surface->events.map_notify, &roots_surface->map_notify);
roots_surface->unmap_notify.notify = handle_unmap_notify;
wl_signal_add(&surface->events.unmap_notify, &roots_surface->unmap_notify);
roots_surface->request_move.notify = handle_request_move;
wl_signal_add(&surface->events.request_move, &roots_surface->request_move);
roots_surface->request_resize.notify = handle_request_resize;
wl_signal_add(&surface->events.request_resize,
&roots_surface->request_resize);
roots_surface->request_maximize.notify = handle_request_maximize;
wl_signal_add(&surface->events.request_maximize,
&roots_surface->request_maximize);
struct roots_view *view = calloc(1, sizeof(struct roots_view));
if (view == NULL) {
free(roots_surface);
return;
}
view->type = ROOTS_XWAYLAND_VIEW;
view->x = (double)surface->x;
view->y = (double)surface->y;
view->xwayland_surface = surface;
view->roots_xwayland_surface = roots_surface;
view->wlr_surface = surface->surface;
view->desktop = desktop;
view->activate = activate;
view->resize = resize;
view->move = move;
view->move_resize = move_resize;
view->maximize = maximize;
view->close = close;
roots_surface->view = view;
wlr_list_add(desktop->views, view);
if (!surface->override_redirect) {
view_setup(view);
}
}
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