swayfx/sway/desktop/xdg_shell.c
Ryan Dwyer 7b9ae42331 Introduce default seatop
This introduces a `default` seat operation which is used when no mouse
buttons are being held. This means there is now always a seat operation
in progress. It allows us to separate `default` code from the standard
cursor management code.

The sway_seatop_impl struct has gained callbacks `axis`, `rebase` and
`end`, and lost callbacks `finish` and `abort`. `axis` and `rebase` are
only used by the default seatop. `end` is called when a seatop is being
replaced by another one and allows the seatop to free any resources,
though no seatop currently needs to do this. `finish` is no longer
required, as each seatop can gracefully finish in their `button`
callback. And `abort` is not needed, as calling `end` would achieve the
same thing. The struct has also gained a bool named allow_set_cursor
which allows the client to set a new cursor during `default` and `down`
seatops.

Seatops would previously store which button they were started with and
stop when that button was released. This behaviour is changed so that it
only ends once all buttons are released. So you can start a drag with
$mod+left, then click and hold right, release left and it'll continue
dragging while the right button is held.

The motion callback now accepts dx and dy. Most seatops don't use this
as they store the cursor position when the seatop is started and compare
it with the current cursor position. This approach doesn't make sense
for the default seatop though, hence why dx and dy are needed.

The pressed_buttons array has been moved from the sway_cursor struct to
the default seatop's data. This is only used for the default seatop to
check bindings. The total pressed button count remains in the
sway_cursor struct though, because all the other seatops check it to
know if they should end.

The `down` seatop no longer has a `moved` property. This was used to
track if the cursor moved and to recheck focus_follows_mouse, but seems
to work without it.

The logic for focus_follows_mouse has been refactored. As part of this
I've removed the call to wlr_seat_keyboard_has_grab as we don't appear
to use keyboard grabs.

The functions for handling relative motion, absolute motion and tool
axis have been changed. Previously the handler functions were
handle_cursor_motion, handle_cursor_motion_absolute and
handle_tool_axis. The latter two both called cursor_motion_absolute.
Both handle_cursor_motion and cursor_motion_absolute did very similar
things. These are now simplified into three handlers and a single common
function called cursor_motion. All three handlers call cursor_motion. As
cursor_motion works with relative distances, the absolute and tool axis
handlers convert them to relative first.
2019-03-17 10:02:04 -06:00

507 lines
16 KiB
C

#define _POSIX_C_SOURCE 199309L
#include <float.h>
#include <stdbool.h>
#include <stdlib.h>
#include <wayland-server.h>
#include <wlr/types/wlr_xdg_shell.h>
#include <wlr/util/edges.h>
#include "log.h"
#include "sway/decoration.h"
#include "sway/desktop.h"
#include "sway/desktop/transaction.h"
#include "sway/input/cursor.h"
#include "sway/input/input-manager.h"
#include "sway/input/seat.h"
#include "sway/output.h"
#include "sway/tree/arrange.h"
#include "sway/tree/container.h"
#include "sway/tree/view.h"
#include "sway/tree/workspace.h"
#include "sway/xdg_decoration.h"
static const struct sway_view_child_impl popup_impl;
static void popup_get_root_coords(struct sway_view_child *child,
int *root_sx, int *root_sy) {
struct sway_xdg_popup *popup = (struct sway_xdg_popup *)child;
struct wlr_xdg_surface *surface = popup->wlr_xdg_surface;
int x_offset = -child->view->geometry.x - surface->geometry.x;
int y_offset = -child->view->geometry.y - surface->geometry.y;
wlr_xdg_popup_get_toplevel_coords(surface->popup,
x_offset + surface->popup->geometry.x,
y_offset + surface->popup->geometry.y,
root_sx, root_sy);
}
static void popup_destroy(struct sway_view_child *child) {
if (!sway_assert(child->impl == &popup_impl,
"Expected an xdg_shell popup")) {
return;
}
struct sway_xdg_popup *popup = (struct sway_xdg_popup *)child;
wl_list_remove(&popup->new_popup.link);
wl_list_remove(&popup->destroy.link);
free(popup);
}
static const struct sway_view_child_impl popup_impl = {
.get_root_coords = popup_get_root_coords,
.destroy = popup_destroy,
};
static struct sway_xdg_popup *popup_create(
struct wlr_xdg_popup *wlr_popup, struct sway_view *view);
static void popup_handle_new_popup(struct wl_listener *listener, void *data) {
struct sway_xdg_popup *popup =
wl_container_of(listener, popup, new_popup);
struct wlr_xdg_popup *wlr_popup = data;
popup_create(wlr_popup, popup->child.view);
}
static void popup_handle_destroy(struct wl_listener *listener, void *data) {
struct sway_xdg_popup *popup = wl_container_of(listener, popup, destroy);
view_child_destroy(&popup->child);
}
static void popup_unconstrain(struct sway_xdg_popup *popup) {
struct sway_view *view = popup->child.view;
struct wlr_xdg_popup *wlr_popup = popup->wlr_xdg_surface->popup;
struct sway_output *output = view->container->workspace->output;
// the output box expressed in the coordinate system of the toplevel parent
// of the popup
struct wlr_box output_toplevel_sx_box = {
.x = output->lx - view->container->content_x,
.y = output->ly - view->container->content_y,
.width = output->width,
.height = output->height,
};
wlr_xdg_popup_unconstrain_from_box(wlr_popup, &output_toplevel_sx_box);
}
static struct sway_xdg_popup *popup_create(
struct wlr_xdg_popup *wlr_popup, struct sway_view *view) {
struct wlr_xdg_surface *xdg_surface = wlr_popup->base;
struct sway_xdg_popup *popup =
calloc(1, sizeof(struct sway_xdg_popup));
if (popup == NULL) {
return NULL;
}
view_child_init(&popup->child, &popup_impl, view, xdg_surface->surface);
popup->wlr_xdg_surface = xdg_surface;
wl_signal_add(&xdg_surface->events.new_popup, &popup->new_popup);
popup->new_popup.notify = popup_handle_new_popup;
wl_signal_add(&xdg_surface->events.destroy, &popup->destroy);
popup->destroy.notify = popup_handle_destroy;
wl_signal_add(&xdg_surface->events.map, &popup->child.surface_map);
wl_signal_add(&xdg_surface->events.unmap, &popup->child.surface_unmap);
popup_unconstrain(popup);
return popup;
}
static struct sway_xdg_shell_view *xdg_shell_view_from_view(
struct sway_view *view) {
if (!sway_assert(view->type == SWAY_VIEW_XDG_SHELL,
"Expected xdg_shell view")) {
return NULL;
}
return (struct sway_xdg_shell_view *)view;
}
static void get_constraints(struct sway_view *view, double *min_width,
double *max_width, double *min_height, double *max_height) {
struct wlr_xdg_toplevel_state *state =
&view->wlr_xdg_surface->toplevel->current;
*min_width = state->min_width > 0 ? state->min_width : DBL_MIN;
*max_width = state->max_width > 0 ? state->max_width : DBL_MAX;
*min_height = state->min_height > 0 ? state->min_height : DBL_MIN;
*max_height = state->max_height > 0 ? state->max_height : DBL_MAX;
}
static const char *get_string_prop(struct sway_view *view,
enum sway_view_prop prop) {
if (xdg_shell_view_from_view(view) == NULL) {
return NULL;
}
switch (prop) {
case VIEW_PROP_TITLE:
return view->wlr_xdg_surface->toplevel->title;
case VIEW_PROP_APP_ID:
return view->wlr_xdg_surface->toplevel->app_id;
default:
return NULL;
}
}
static uint32_t configure(struct sway_view *view, double lx, double ly,
int width, int height) {
struct sway_xdg_shell_view *xdg_shell_view =
xdg_shell_view_from_view(view);
if (xdg_shell_view == NULL) {
return 0;
}
return wlr_xdg_toplevel_set_size(view->wlr_xdg_surface, width, height);
}
static void set_activated(struct sway_view *view, bool activated) {
if (xdg_shell_view_from_view(view) == NULL) {
return;
}
struct wlr_xdg_surface *surface = view->wlr_xdg_surface;
if (surface->role == WLR_XDG_SURFACE_ROLE_TOPLEVEL) {
wlr_xdg_toplevel_set_activated(surface, activated);
}
}
static void set_tiled(struct sway_view *view, bool tiled) {
if (xdg_shell_view_from_view(view) == NULL) {
return;
}
struct wlr_xdg_surface *surface = view->wlr_xdg_surface;
enum wlr_edges edges = WLR_EDGE_NONE;
if (tiled) {
edges = WLR_EDGE_LEFT | WLR_EDGE_RIGHT | WLR_EDGE_TOP |
WLR_EDGE_BOTTOM;
}
wlr_xdg_toplevel_set_tiled(surface, edges);
}
static void set_fullscreen(struct sway_view *view, bool fullscreen) {
if (xdg_shell_view_from_view(view) == NULL) {
return;
}
struct wlr_xdg_surface *surface = view->wlr_xdg_surface;
wlr_xdg_toplevel_set_fullscreen(surface, fullscreen);
}
static bool wants_floating(struct sway_view *view) {
struct wlr_xdg_toplevel *toplevel = view->wlr_xdg_surface->toplevel;
struct wlr_xdg_toplevel_state *state = &toplevel->current;
return (state->min_width != 0 && state->min_height != 0
&& (state->min_width == state->max_width
|| state->min_height == state->max_height))
|| toplevel->parent;
}
static void for_each_surface(struct sway_view *view,
wlr_surface_iterator_func_t iterator, void *user_data) {
if (xdg_shell_view_from_view(view) == NULL) {
return;
}
wlr_xdg_surface_for_each_surface(view->wlr_xdg_surface, iterator,
user_data);
}
static void for_each_popup(struct sway_view *view,
wlr_surface_iterator_func_t iterator, void *user_data) {
if (xdg_shell_view_from_view(view) == NULL) {
return;
}
wlr_xdg_surface_for_each_popup(view->wlr_xdg_surface, iterator, user_data);
}
static bool is_transient_for(struct sway_view *child,
struct sway_view *ancestor) {
if (xdg_shell_view_from_view(child) == NULL) {
return false;
}
struct wlr_xdg_surface *surface = child->wlr_xdg_surface;
while (surface && surface->role == WLR_XDG_SURFACE_ROLE_TOPLEVEL) {
if (surface->toplevel->parent == ancestor->wlr_xdg_surface) {
return true;
}
surface = surface->toplevel->parent;
}
return false;
}
static void _close(struct sway_view *view) {
if (xdg_shell_view_from_view(view) == NULL) {
return;
}
struct wlr_xdg_surface *surface = view->wlr_xdg_surface;
if (surface->role == WLR_XDG_SURFACE_ROLE_TOPLEVEL
&& surface->toplevel) {
wlr_xdg_toplevel_send_close(surface);
}
}
static void close_popups(struct sway_view *view) {
struct wlr_xdg_popup *popup, *tmp;
wl_list_for_each_safe(popup, tmp, &view->wlr_xdg_surface->popups, link) {
wlr_xdg_popup_destroy(popup->base);
}
}
static void destroy(struct sway_view *view) {
struct sway_xdg_shell_view *xdg_shell_view =
xdg_shell_view_from_view(view);
if (xdg_shell_view == NULL) {
return;
}
free(xdg_shell_view);
}
static const struct sway_view_impl view_impl = {
.get_constraints = get_constraints,
.get_string_prop = get_string_prop,
.configure = configure,
.set_activated = set_activated,
.set_tiled = set_tiled,
.set_fullscreen = set_fullscreen,
.wants_floating = wants_floating,
.for_each_surface = for_each_surface,
.for_each_popup = for_each_popup,
.is_transient_for = is_transient_for,
.close = _close,
.close_popups = close_popups,
.destroy = destroy,
};
static void handle_commit(struct wl_listener *listener, void *data) {
struct sway_xdg_shell_view *xdg_shell_view =
wl_container_of(listener, xdg_shell_view, commit);
struct sway_view *view = &xdg_shell_view->view;
struct wlr_xdg_surface *xdg_surface = view->wlr_xdg_surface;
if (view->container->node.instruction) {
wlr_xdg_surface_get_geometry(xdg_surface, &view->geometry);
transaction_notify_view_ready_by_serial(view,
xdg_surface->configure_serial);
} else {
struct wlr_box new_geo;
wlr_xdg_surface_get_geometry(xdg_surface, &new_geo);
struct sway_container *con = view->container;
if ((new_geo.width != con->surface_width ||
new_geo.height != con->surface_height)) {
// The view has unexpectedly sent a new size
desktop_damage_view(view);
view_update_size(view, new_geo.width, new_geo.height);
memcpy(&view->geometry, &new_geo, sizeof(struct wlr_box));
desktop_damage_view(view);
transaction_commit_dirty();
} else {
memcpy(&view->geometry, &new_geo, sizeof(struct wlr_box));
}
}
view_damage_from(view);
}
static void handle_set_title(struct wl_listener *listener, void *data) {
struct sway_xdg_shell_view *xdg_shell_view =
wl_container_of(listener, xdg_shell_view, set_title);
struct sway_view *view = &xdg_shell_view->view;
view_update_title(view, false);
view_execute_criteria(view);
}
static void handle_set_app_id(struct wl_listener *listener, void *data) {
struct sway_xdg_shell_view *xdg_shell_view =
wl_container_of(listener, xdg_shell_view, set_app_id);
struct sway_view *view = &xdg_shell_view->view;
view_execute_criteria(view);
}
static void handle_new_popup(struct wl_listener *listener, void *data) {
struct sway_xdg_shell_view *xdg_shell_view =
wl_container_of(listener, xdg_shell_view, new_popup);
struct wlr_xdg_popup *wlr_popup = data;
popup_create(wlr_popup, &xdg_shell_view->view);
}
static void handle_request_fullscreen(struct wl_listener *listener, void *data) {
struct sway_xdg_shell_view *xdg_shell_view =
wl_container_of(listener, xdg_shell_view, request_fullscreen);
struct wlr_xdg_toplevel_set_fullscreen_event *e = data;
struct wlr_xdg_surface *xdg_surface =
xdg_shell_view->view.wlr_xdg_surface;
struct sway_view *view = &xdg_shell_view->view;
if (!sway_assert(xdg_surface->role == WLR_XDG_SURFACE_ROLE_TOPLEVEL,
"xdg_shell requested fullscreen of surface with role %i",
xdg_surface->role)) {
return;
}
if (!xdg_surface->mapped) {
return;
}
container_set_fullscreen(view->container, e->fullscreen);
arrange_root();
transaction_commit_dirty();
}
static void handle_request_move(struct wl_listener *listener, void *data) {
struct sway_xdg_shell_view *xdg_shell_view =
wl_container_of(listener, xdg_shell_view, request_move);
struct sway_view *view = &xdg_shell_view->view;
if (!container_is_floating(view->container)) {
return;
}
struct wlr_xdg_toplevel_move_event *e = data;
struct sway_seat *seat = e->seat->seat->data;
if (e->serial == seat->last_button_serial) {
seatop_begin_move_floating(seat, view->container);
}
}
static void handle_request_resize(struct wl_listener *listener, void *data) {
struct sway_xdg_shell_view *xdg_shell_view =
wl_container_of(listener, xdg_shell_view, request_resize);
struct sway_view *view = &xdg_shell_view->view;
if (!container_is_floating(view->container)) {
return;
}
struct wlr_xdg_toplevel_resize_event *e = data;
struct sway_seat *seat = e->seat->seat->data;
if (e->serial == seat->last_button_serial) {
seatop_begin_resize_floating(seat, view->container, e->edges);
}
}
static void handle_unmap(struct wl_listener *listener, void *data) {
struct sway_xdg_shell_view *xdg_shell_view =
wl_container_of(listener, xdg_shell_view, unmap);
struct sway_view *view = &xdg_shell_view->view;
if (!sway_assert(view->surface, "Cannot unmap unmapped view")) {
return;
}
view_unmap(view);
wl_list_remove(&xdg_shell_view->commit.link);
wl_list_remove(&xdg_shell_view->new_popup.link);
wl_list_remove(&xdg_shell_view->request_fullscreen.link);
wl_list_remove(&xdg_shell_view->request_move.link);
wl_list_remove(&xdg_shell_view->request_resize.link);
wl_list_remove(&xdg_shell_view->set_title.link);
wl_list_remove(&xdg_shell_view->set_app_id.link);
}
static void handle_map(struct wl_listener *listener, void *data) {
struct sway_xdg_shell_view *xdg_shell_view =
wl_container_of(listener, xdg_shell_view, map);
struct sway_view *view = &xdg_shell_view->view;
struct wlr_xdg_surface *xdg_surface = view->wlr_xdg_surface;
view->natural_width = view->wlr_xdg_surface->geometry.width;
view->natural_height = view->wlr_xdg_surface->geometry.height;
if (!view->natural_width && !view->natural_height) {
view->natural_width = view->wlr_xdg_surface->surface->current.width;
view->natural_height = view->wlr_xdg_surface->surface->current.height;
}
bool csd = false;
if (!view->xdg_decoration) {
struct sway_server_decoration *deco =
decoration_from_surface(xdg_surface->surface);
csd = !deco || deco->wlr_server_decoration->mode ==
WLR_SERVER_DECORATION_MANAGER_MODE_CLIENT;
}
view_map(view, view->wlr_xdg_surface->surface,
xdg_surface->toplevel->client_pending.fullscreen, csd);
transaction_commit_dirty();
xdg_shell_view->commit.notify = handle_commit;
wl_signal_add(&xdg_surface->surface->events.commit,
&xdg_shell_view->commit);
xdg_shell_view->new_popup.notify = handle_new_popup;
wl_signal_add(&xdg_surface->events.new_popup,
&xdg_shell_view->new_popup);
xdg_shell_view->request_fullscreen.notify = handle_request_fullscreen;
wl_signal_add(&xdg_surface->toplevel->events.request_fullscreen,
&xdg_shell_view->request_fullscreen);
xdg_shell_view->request_move.notify = handle_request_move;
wl_signal_add(&xdg_surface->toplevel->events.request_move,
&xdg_shell_view->request_move);
xdg_shell_view->request_resize.notify = handle_request_resize;
wl_signal_add(&xdg_surface->toplevel->events.request_resize,
&xdg_shell_view->request_resize);
xdg_shell_view->set_title.notify = handle_set_title;
wl_signal_add(&xdg_surface->toplevel->events.set_title,
&xdg_shell_view->set_title);
xdg_shell_view->set_app_id.notify = handle_set_app_id;
wl_signal_add(&xdg_surface->toplevel->events.set_app_id,
&xdg_shell_view->set_app_id);
}
static void handle_destroy(struct wl_listener *listener, void *data) {
struct sway_xdg_shell_view *xdg_shell_view =
wl_container_of(listener, xdg_shell_view, destroy);
struct sway_view *view = &xdg_shell_view->view;
if (!sway_assert(view->surface == NULL, "Tried to destroy a mapped view")) {
return;
}
wl_list_remove(&xdg_shell_view->destroy.link);
wl_list_remove(&xdg_shell_view->map.link);
wl_list_remove(&xdg_shell_view->unmap.link);
view->wlr_xdg_surface = NULL;
if (view->xdg_decoration) {
view->xdg_decoration->view = NULL;
}
view_begin_destroy(view);
}
struct sway_view *view_from_wlr_xdg_surface(
struct wlr_xdg_surface *xdg_surface) {
return xdg_surface->data;
}
void handle_xdg_shell_surface(struct wl_listener *listener, void *data) {
struct wlr_xdg_surface *xdg_surface = data;
if (xdg_surface->role == WLR_XDG_SURFACE_ROLE_POPUP) {
sway_log(SWAY_DEBUG, "New xdg_shell popup");
return;
}
sway_log(SWAY_DEBUG, "New xdg_shell toplevel title='%s' app_id='%s'",
xdg_surface->toplevel->title, xdg_surface->toplevel->app_id);
wlr_xdg_surface_ping(xdg_surface);
struct sway_xdg_shell_view *xdg_shell_view =
calloc(1, sizeof(struct sway_xdg_shell_view));
if (!sway_assert(xdg_shell_view, "Failed to allocate view")) {
return;
}
view_init(&xdg_shell_view->view, SWAY_VIEW_XDG_SHELL, &view_impl);
xdg_shell_view->view.wlr_xdg_surface = xdg_surface;
xdg_shell_view->map.notify = handle_map;
wl_signal_add(&xdg_surface->events.map, &xdg_shell_view->map);
xdg_shell_view->unmap.notify = handle_unmap;
wl_signal_add(&xdg_surface->events.unmap, &xdg_shell_view->unmap);
xdg_shell_view->destroy.notify = handle_destroy;
wl_signal_add(&xdg_surface->events.destroy, &xdg_shell_view->destroy);
xdg_surface->data = xdg_shell_view;
}