swayfx/sway/tree/view.c
Simon Ser b5a35c484f tree/view: fix segfault in view_update_title
xdg-shell doesn't allow clients to set the title to NULL, so we
shouldn't need to call wlr_foreign_toplevel_handle_v1_set_title with an
empty string to reset the old one.

Closes: https://github.com/swaywm/sway/issues/5488
2020-07-03 09:23:35 +02:00

1303 lines
38 KiB
C

#define _POSIX_C_SOURCE 200809L
#include <stdlib.h>
#include <strings.h>
#include <wayland-server-core.h>
#include <wlr/render/wlr_renderer.h>
#include <wlr/types/wlr_buffer.h>
#include <wlr/types/wlr_output_layout.h>
#include <wlr/types/wlr_server_decoration.h>
#include <wlr/types/wlr_xdg_decoration_v1.h>
#include "config.h"
#if HAVE_XWAYLAND
#include <wlr/xwayland.h>
#endif
#include "list.h"
#include "log.h"
#include "sway/criteria.h"
#include "sway/commands.h"
#include "sway/desktop.h"
#include "sway/desktop/transaction.h"
#include "sway/desktop/idle_inhibit_v1.h"
#include "sway/input/cursor.h"
#include "sway/ipc-server.h"
#include "sway/output.h"
#include "sway/input/seat.h"
#include "sway/server.h"
#include "sway/tree/arrange.h"
#include "sway/tree/container.h"
#include "sway/tree/view.h"
#include "sway/tree/workspace.h"
#include "sway/config.h"
#include "sway/xdg_decoration.h"
#include "pango.h"
#include "stringop.h"
void view_init(struct sway_view *view, enum sway_view_type type,
const struct sway_view_impl *impl) {
view->type = type;
view->impl = impl;
view->executed_criteria = create_list();
wl_list_init(&view->saved_buffers);
view->allow_request_urgent = true;
view->shortcuts_inhibit = SHORTCUTS_INHIBIT_DEFAULT;
wl_signal_init(&view->events.unmap);
}
void view_destroy(struct sway_view *view) {
if (!sway_assert(view->surface == NULL, "Tried to free mapped view")) {
return;
}
if (!sway_assert(view->destroying,
"Tried to free view which wasn't marked as destroying")) {
return;
}
if (!sway_assert(view->container == NULL,
"Tried to free view which still has a container "
"(might have a pending transaction?)")) {
return;
}
if (!wl_list_empty(&view->saved_buffers)) {
view_remove_saved_buffer(view);
}
list_free(view->executed_criteria);
free(view->title_format);
if (view->impl->destroy) {
view->impl->destroy(view);
} else {
free(view);
}
}
void view_begin_destroy(struct sway_view *view) {
if (!sway_assert(view->surface == NULL, "Tried to destroy a mapped view")) {
return;
}
view->destroying = true;
if (!view->container) {
view_destroy(view);
}
}
const char *view_get_title(struct sway_view *view) {
if (view->impl->get_string_prop) {
return view->impl->get_string_prop(view, VIEW_PROP_TITLE);
}
return NULL;
}
const char *view_get_app_id(struct sway_view *view) {
if (view->impl->get_string_prop) {
return view->impl->get_string_prop(view, VIEW_PROP_APP_ID);
}
return NULL;
}
const char *view_get_class(struct sway_view *view) {
if (view->impl->get_string_prop) {
return view->impl->get_string_prop(view, VIEW_PROP_CLASS);
}
return NULL;
}
const char *view_get_instance(struct sway_view *view) {
if (view->impl->get_string_prop) {
return view->impl->get_string_prop(view, VIEW_PROP_INSTANCE);
}
return NULL;
}
#if HAVE_XWAYLAND
uint32_t view_get_x11_window_id(struct sway_view *view) {
if (view->impl->get_int_prop) {
return view->impl->get_int_prop(view, VIEW_PROP_X11_WINDOW_ID);
}
return 0;
}
uint32_t view_get_x11_parent_id(struct sway_view *view) {
if (view->impl->get_int_prop) {
return view->impl->get_int_prop(view, VIEW_PROP_X11_PARENT_ID);
}
return 0;
}
#endif
const char *view_get_window_role(struct sway_view *view) {
if (view->impl->get_string_prop) {
return view->impl->get_string_prop(view, VIEW_PROP_WINDOW_ROLE);
}
return NULL;
}
uint32_t view_get_window_type(struct sway_view *view) {
if (view->impl->get_int_prop) {
return view->impl->get_int_prop(view, VIEW_PROP_WINDOW_TYPE);
}
return 0;
}
const char *view_get_shell(struct sway_view *view) {
switch(view->type) {
case SWAY_VIEW_XDG_SHELL:
return "xdg_shell";
#if HAVE_XWAYLAND
case SWAY_VIEW_XWAYLAND:
return "xwayland";
#endif
}
return "unknown";
}
void view_get_constraints(struct sway_view *view, double *min_width,
double *max_width, double *min_height, double *max_height) {
if (view->impl->get_constraints) {
view->impl->get_constraints(view,
min_width, max_width, min_height, max_height);
} else {
*min_width = DBL_MIN;
*max_width = DBL_MAX;
*min_height = DBL_MIN;
*max_height = DBL_MAX;
}
}
uint32_t view_configure(struct sway_view *view, double lx, double ly, int width,
int height) {
if (view->impl->configure) {
return view->impl->configure(view, lx, ly, width, height);
}
return 0;
}
bool view_inhibit_idle(struct sway_view *view) {
struct sway_idle_inhibitor_v1 *user_inhibitor =
sway_idle_inhibit_v1_user_inhibitor_for_view(view);
struct sway_idle_inhibitor_v1 *application_inhibitor =
sway_idle_inhibit_v1_application_inhibitor_for_view(view);
if (!user_inhibitor && !application_inhibitor) {
return false;
}
if (!user_inhibitor) {
return sway_idle_inhibit_v1_is_active(application_inhibitor);
}
if (!application_inhibitor) {
return sway_idle_inhibit_v1_is_active(user_inhibitor);
}
return sway_idle_inhibit_v1_is_active(user_inhibitor)
|| sway_idle_inhibit_v1_is_active(application_inhibitor);
}
bool view_ancestor_is_only_visible(struct sway_view *view) {
bool only_visible = true;
struct sway_container *con = view->container;
while (con) {
enum sway_container_layout layout = container_parent_layout(con);
if (layout != L_TABBED && layout != L_STACKED) {
list_t *siblings = container_get_siblings(con);
if (siblings && siblings->length > 1) {
only_visible = false;
}
} else {
only_visible = true;
}
con = con->parent;
}
return only_visible;
}
static bool view_is_only_visible(struct sway_view *view) {
struct sway_container *con = view->container;
while (con) {
enum sway_container_layout layout = container_parent_layout(con);
if (layout != L_TABBED && layout != L_STACKED) {
list_t *siblings = container_get_siblings(con);
if (siblings && siblings->length > 1) {
return false;
}
}
con = con->parent;
}
return true;
}
static bool gaps_to_edge(struct sway_view *view) {
struct side_gaps gaps = view->container->workspace->current_gaps;
return gaps.top > 0 || gaps.right > 0 || gaps.bottom > 0 || gaps.left > 0;
}
void view_autoconfigure(struct sway_view *view) {
struct sway_container *con = view->container;
struct sway_workspace *ws = con->workspace;
if (container_is_scratchpad_hidden(con) &&
con->fullscreen_mode != FULLSCREEN_GLOBAL) {
return;
}
struct sway_output *output = ws ? ws->output : NULL;
if (con->fullscreen_mode == FULLSCREEN_WORKSPACE) {
con->content_x = output->lx;
con->content_y = output->ly;
con->content_width = output->width;
con->content_height = output->height;
return;
} else if (con->fullscreen_mode == FULLSCREEN_GLOBAL) {
con->content_x = root->x;
con->content_y = root->y;
con->content_width = root->width;
con->content_height = root->height;
return;
}
con->border_top = con->border_bottom = true;
con->border_left = con->border_right = true;
double y_offset = 0;
if (!container_is_floating(con) && ws) {
if (config->hide_edge_borders == E_BOTH
|| config->hide_edge_borders == E_VERTICAL) {
con->border_left = con->x != ws->x;
int right_x = con->x + con->width;
con->border_right = right_x != ws->x + ws->width;
}
if (config->hide_edge_borders == E_BOTH
|| config->hide_edge_borders == E_HORIZONTAL) {
con->border_top = con->y != ws->y;
int bottom_y = con->y + con->height;
con->border_bottom = bottom_y != ws->y + ws->height;
}
bool smart = config->hide_edge_borders_smart == ESMART_ON ||
(config->hide_edge_borders_smart == ESMART_NO_GAPS &&
!gaps_to_edge(view));
if (smart) {
bool show_border = !view_is_only_visible(view);
con->border_left &= show_border;
con->border_right &= show_border;
con->border_top &= show_border;
con->border_bottom &= show_border;
}
// In a tabbed or stacked container, the container's y is the top of the
// title area. We have to offset the surface y by the height of the title,
// bar, and disable any top border because we'll always have the title bar.
list_t *siblings = container_get_siblings(con);
bool show_titlebar = (siblings && siblings->length > 1)
|| !config->hide_lone_tab;
if (show_titlebar) {
enum sway_container_layout layout = container_parent_layout(con);
if (layout == L_TABBED) {
y_offset = container_titlebar_height();
con->border_top = false;
} else if (layout == L_STACKED) {
y_offset = container_titlebar_height() * siblings->length;
con->border_top = false;
}
}
}
double x, y, width, height;
switch (con->border) {
default:
case B_CSD:
case B_NONE:
x = con->x;
y = con->y + y_offset;
width = con->width;
height = con->height - y_offset;
break;
case B_PIXEL:
x = con->x + con->border_thickness * con->border_left;
y = con->y + con->border_thickness * con->border_top + y_offset;
width = con->width
- con->border_thickness * con->border_left
- con->border_thickness * con->border_right;
height = con->height - y_offset
- con->border_thickness * con->border_top
- con->border_thickness * con->border_bottom;
break;
case B_NORMAL:
// Height is: 1px border + 3px pad + title height + 3px pad + 1px border
x = con->x + con->border_thickness * con->border_left;
width = con->width
- con->border_thickness * con->border_left
- con->border_thickness * con->border_right;
if (y_offset) {
y = con->y + y_offset;
height = con->height - y_offset
- con->border_thickness * con->border_bottom;
} else {
y = con->y + container_titlebar_height();
height = con->height - container_titlebar_height()
- con->border_thickness * con->border_bottom;
}
break;
}
con->content_x = x;
con->content_y = y;
con->content_width = width;
con->content_height = height;
}
void view_set_activated(struct sway_view *view, bool activated) {
if (view->impl->set_activated) {
view->impl->set_activated(view, activated);
}
if (view->foreign_toplevel) {
wlr_foreign_toplevel_handle_v1_set_activated(
view->foreign_toplevel, activated);
}
}
void view_request_activate(struct sway_view *view) {
struct sway_workspace *ws = view->container->workspace;
if (!ws) { // hidden scratchpad container
return;
}
struct sway_seat *seat = input_manager_current_seat();
switch (config->focus_on_window_activation) {
case FOWA_SMART:
if (workspace_is_visible(ws)) {
seat_set_focus_container(seat, view->container);
} else {
view_set_urgent(view, true);
}
break;
case FOWA_URGENT:
view_set_urgent(view, true);
break;
case FOWA_FOCUS:
seat_set_focus_container(seat, view->container);
break;
case FOWA_NONE:
break;
}
}
void view_set_csd_from_server(struct sway_view *view, bool enabled) {
sway_log(SWAY_DEBUG, "Telling view %p to set CSD to %i", view, enabled);
if (view->xdg_decoration) {
uint32_t mode = enabled ?
WLR_XDG_TOPLEVEL_DECORATION_V1_MODE_CLIENT_SIDE :
WLR_XDG_TOPLEVEL_DECORATION_V1_MODE_SERVER_SIDE;
wlr_xdg_toplevel_decoration_v1_set_mode(
view->xdg_decoration->wlr_xdg_decoration, mode);
}
view->using_csd = enabled;
}
void view_update_csd_from_client(struct sway_view *view, bool enabled) {
sway_log(SWAY_DEBUG, "View %p updated CSD to %i", view, enabled);
struct sway_container *con = view->container;
if (enabled && con && con->border != B_CSD) {
con->saved_border = con->border;
if (container_is_floating(con)) {
con->border = B_CSD;
}
} else if (!enabled && con && con->border == B_CSD) {
con->border = con->saved_border;
}
view->using_csd = enabled;
}
void view_set_tiled(struct sway_view *view, bool tiled) {
if (view->impl->set_tiled) {
view->impl->set_tiled(view, tiled);
}
}
void view_close(struct sway_view *view) {
if (view->impl->close) {
view->impl->close(view);
}
}
void view_close_popups(struct sway_view *view) {
if (view->impl->close_popups) {
view->impl->close_popups(view);
}
}
void view_damage_from(struct sway_view *view) {
for (int i = 0; i < root->outputs->length; ++i) {
struct sway_output *output = root->outputs->items[i];
output_damage_from_view(output, view);
}
}
void view_for_each_surface(struct sway_view *view,
wlr_surface_iterator_func_t iterator, void *user_data) {
if (!view->surface) {
return;
}
if (view->impl->for_each_surface) {
view->impl->for_each_surface(view, iterator, user_data);
} else {
wlr_surface_for_each_surface(view->surface, iterator, user_data);
}
}
void view_for_each_popup(struct sway_view *view,
wlr_surface_iterator_func_t iterator, void *user_data) {
if (!view->surface) {
return;
}
if (view->impl->for_each_popup) {
view->impl->for_each_popup(view, iterator, user_data);
}
}
static void view_subsurface_create(struct sway_view *view,
struct wlr_subsurface *subsurface);
static void view_init_subsurfaces(struct sway_view *view,
struct wlr_surface *surface);
static void view_handle_surface_new_subsurface(struct wl_listener *listener,
void *data) {
struct sway_view *view =
wl_container_of(listener, view, surface_new_subsurface);
struct wlr_subsurface *subsurface = data;
view_subsurface_create(view, subsurface);
}
static bool view_has_executed_criteria(struct sway_view *view,
struct criteria *criteria) {
for (int i = 0; i < view->executed_criteria->length; ++i) {
struct criteria *item = view->executed_criteria->items[i];
if (item == criteria) {
return true;
}
}
return false;
}
void view_execute_criteria(struct sway_view *view) {
list_t *criterias = criteria_for_view(view, CT_COMMAND);
for (int i = 0; i < criterias->length; i++) {
struct criteria *criteria = criterias->items[i];
sway_log(SWAY_DEBUG, "Checking criteria %s", criteria->raw);
if (view_has_executed_criteria(view, criteria)) {
sway_log(SWAY_DEBUG, "Criteria already executed");
continue;
}
sway_log(SWAY_DEBUG, "for_window '%s' matches view %p, cmd: '%s'",
criteria->raw, view, criteria->cmdlist);
list_add(view->executed_criteria, criteria);
list_t *res_list = execute_command(
criteria->cmdlist, NULL, view->container);
while (res_list->length) {
struct cmd_results *res = res_list->items[0];
free_cmd_results(res);
list_del(res_list, 0);
}
list_free(res_list);
}
list_free(criterias);
}
static void view_populate_pid(struct sway_view *view) {
pid_t pid;
switch (view->type) {
#if HAVE_XWAYLAND
case SWAY_VIEW_XWAYLAND:;
struct wlr_xwayland_surface *surf =
wlr_xwayland_surface_from_wlr_surface(view->surface);
pid = surf->pid;
break;
#endif
case SWAY_VIEW_XDG_SHELL:;
struct wl_client *client =
wl_resource_get_client(view->surface->resource);
wl_client_get_credentials(client, &pid, NULL, NULL);
break;
}
view->pid = pid;
}
static struct sway_workspace *select_workspace(struct sway_view *view) {
struct sway_seat *seat = input_manager_current_seat();
// Check if there's any `assign` criteria for the view
list_t *criterias = criteria_for_view(view,
CT_ASSIGN_WORKSPACE | CT_ASSIGN_WORKSPACE_NUMBER | CT_ASSIGN_OUTPUT);
struct sway_workspace *ws = NULL;
for (int i = 0; i < criterias->length; ++i) {
struct criteria *criteria = criterias->items[i];
if (criteria->type == CT_ASSIGN_OUTPUT) {
struct sway_output *output = output_by_name_or_id(criteria->target);
if (output) {
ws = output_get_active_workspace(output);
break;
}
} else {
// CT_ASSIGN_WORKSPACE(_NUMBER)
ws = criteria->type == CT_ASSIGN_WORKSPACE_NUMBER ?
workspace_by_number(criteria->target) :
workspace_by_name(criteria->target);
if (!ws) {
if (strcasecmp(criteria->target, "back_and_forth") == 0) {
if (seat->prev_workspace_name) {
ws = workspace_create(NULL, seat->prev_workspace_name);
}
} else {
ws = workspace_create(NULL, criteria->target);
}
}
break;
}
}
list_free(criterias);
if (ws) {
root_remove_workspace_pid(view->pid);
return ws;
}
// Check if there's a PID mapping
ws = root_workspace_for_pid(view->pid);
if (ws) {
return ws;
}
// Use the focused workspace
struct sway_node *node = seat_get_focus_inactive(seat, &root->node);
if (node && node->type == N_WORKSPACE) {
return node->sway_workspace;
} else if (node && node->type == N_CONTAINER) {
return node->sway_container->workspace;
}
// When there's no outputs connected, the above should match a workspace on
// the noop output.
sway_assert(false, "Expected to find a workspace");
return NULL;
}
static bool should_focus(struct sway_view *view) {
struct sway_seat *seat = input_manager_current_seat();
struct sway_container *prev_con = seat_get_focused_container(seat);
struct sway_workspace *prev_ws = seat_get_focused_workspace(seat);
struct sway_workspace *map_ws = view->container->workspace;
if (view->container->fullscreen_mode == FULLSCREEN_GLOBAL) {
return true;
}
// Views can only take focus if they are mapped into the active workspace
if (prev_ws != map_ws) {
return false;
}
// If the view is the only one in the focused workspace, it'll get focus
// regardless of any no_focus criteria.
if (!view->container->parent && !prev_con) {
size_t num_children = view->container->workspace->tiling->length +
view->container->workspace->floating->length;
if (num_children == 1) {
return true;
}
}
// Check no_focus criteria
list_t *criterias = criteria_for_view(view, CT_NO_FOCUS);
size_t len = criterias->length;
list_free(criterias);
return len == 0;
}
static void handle_foreign_activate_request(
struct wl_listener *listener, void *data) {
struct sway_view *view = wl_container_of(
listener, view, foreign_activate_request);
struct wlr_foreign_toplevel_handle_v1_activated_event *event = data;
struct sway_seat *seat;
wl_list_for_each(seat, &server.input->seats, link) {
if (seat->wlr_seat == event->seat) {
seat_set_focus_container(seat, view->container);
break;
}
}
}
static void handle_foreign_close_request(
struct wl_listener *listener, void *data) {
struct sway_view *view = wl_container_of(
listener, view, foreign_close_request);
view_close(view);
}
void view_map(struct sway_view *view, struct wlr_surface *wlr_surface,
bool fullscreen, struct wlr_output *fullscreen_output,
bool decoration) {
if (!sway_assert(view->surface == NULL, "cannot map mapped view")) {
return;
}
view->surface = wlr_surface;
view_populate_pid(view);
view->container = container_create(view);
// If there is a request to be opened fullscreen on a specific output, try
// to honor that request. Otherwise, fallback to assigns, pid mappings,
// focused workspace, etc
struct sway_workspace *ws = NULL;
if (fullscreen_output && fullscreen_output->data) {
struct sway_output *output = fullscreen_output->data;
ws = output_get_active_workspace(output);
}
if (!ws) {
ws = select_workspace(view);
}
struct sway_seat *seat = input_manager_current_seat();
struct sway_node *node = ws ? seat_get_focus_inactive(seat, &ws->node)
: seat_get_focus_inactive(seat, &root->node);
struct sway_container *target_sibling = node->type == N_CONTAINER ?
node->sway_container : NULL;
view->foreign_toplevel =
wlr_foreign_toplevel_handle_v1_create(server.foreign_toplevel_manager);
view->foreign_activate_request.notify = handle_foreign_activate_request;
wl_signal_add(&view->foreign_toplevel->events.request_activate,
&view->foreign_activate_request);
view->foreign_close_request.notify = handle_foreign_close_request;
wl_signal_add(&view->foreign_toplevel->events.request_close,
&view->foreign_close_request);
// If we're about to launch the view into the floating container, then
// launch it as a tiled view in the root of the workspace instead.
if (target_sibling && container_is_floating(target_sibling)) {
target_sibling = NULL;
ws = seat_get_last_known_workspace(seat);
}
if (target_sibling) {
container_add_sibling(target_sibling, view->container, 1);
} else if (ws) {
workspace_add_tiling(ws, view->container);
}
ipc_event_window(view->container, "new");
view_init_subsurfaces(view, wlr_surface);
wl_signal_add(&wlr_surface->events.new_subsurface,
&view->surface_new_subsurface);
view->surface_new_subsurface.notify = view_handle_surface_new_subsurface;
if (decoration) {
view_update_csd_from_client(view, decoration);
}
if (view->impl->wants_floating && view->impl->wants_floating(view)) {
view->container->border = config->floating_border;
view->container->border_thickness = config->floating_border_thickness;
container_set_floating(view->container, true);
} else {
view->container->border = config->border;
view->container->border_thickness = config->border_thickness;
view_set_tiled(view, true);
}
if (config->popup_during_fullscreen == POPUP_LEAVE &&
view->container->workspace &&
view->container->workspace->fullscreen &&
view->container->workspace->fullscreen->view) {
struct sway_container *fs = view->container->workspace->fullscreen;
if (view_is_transient_for(view, fs->view)) {
container_set_fullscreen(fs, false);
}
}
view_update_title(view, false);
container_update_representation(view->container);
if (fullscreen) {
container_set_fullscreen(view->container, true);
arrange_workspace(view->container->workspace);
} else {
if (view->container->parent) {
arrange_container(view->container->parent);
} else if (view->container->workspace) {
arrange_workspace(view->container->workspace);
}
}
view_execute_criteria(view);
if (should_focus(view)) {
input_manager_set_focus(&view->container->node);
}
const char *app_id;
const char *class;
if ((app_id = view_get_app_id(view)) != NULL) {
wlr_foreign_toplevel_handle_v1_set_app_id(
view->foreign_toplevel, app_id);
} else if ((class = view_get_class(view)) != NULL) {
wlr_foreign_toplevel_handle_v1_set_app_id(
view->foreign_toplevel, class);
}
}
void view_unmap(struct sway_view *view) {
wl_signal_emit(&view->events.unmap, view);
wl_list_remove(&view->surface_new_subsurface.link);
if (view->urgent_timer) {
wl_event_source_remove(view->urgent_timer);
view->urgent_timer = NULL;
}
if (view->foreign_toplevel) {
wlr_foreign_toplevel_handle_v1_destroy(view->foreign_toplevel);
view->foreign_toplevel = NULL;
}
struct sway_container *parent = view->container->parent;
struct sway_workspace *ws = view->container->workspace;
container_begin_destroy(view->container);
if (parent) {
container_reap_empty(parent);
} else if (ws) {
workspace_consider_destroy(ws);
}
if (root->fullscreen_global) {
// Container may have been a child of the root fullscreen container
arrange_root();
} else if (ws && !ws->node.destroying) {
arrange_workspace(ws);
workspace_detect_urgent(ws);
}
struct sway_seat *seat;
wl_list_for_each(seat, &server.input->seats, link) {
seat->cursor->image_surface = NULL;
if (seat->cursor->active_constraint) {
struct wlr_surface *constrain_surface =
seat->cursor->active_constraint->surface;
if (view_from_wlr_surface(constrain_surface) == view) {
sway_cursor_constrain(seat->cursor, NULL);
}
}
seat_consider_warp_to_focus(seat);
}
transaction_commit_dirty();
view->surface = NULL;
}
void view_update_size(struct sway_view *view, int width, int height) {
struct sway_container *con = view->container;
if (container_is_floating(con)) {
con->content_width = width;
con->content_height = height;
container_set_geometry_from_content(con);
} else {
con->surface_x = con->content_x + (con->content_width - width) / 2;
con->surface_y = con->content_y + (con->content_height - height) / 2;
con->surface_x = fmax(con->surface_x, con->content_x);
con->surface_y = fmax(con->surface_y, con->content_y);
}
}
static const struct sway_view_child_impl subsurface_impl;
static void subsurface_get_root_coords(struct sway_view_child *child,
int *root_sx, int *root_sy) {
struct wlr_surface *surface = child->surface;
*root_sx = -child->view->geometry.x;
*root_sy = -child->view->geometry.y;
if (child->parent && child->parent->impl &&
child->parent->impl->get_root_coords) {
int sx, sy;
child->parent->impl->get_root_coords(child->parent, &sx, &sy);
*root_sx += sx;
*root_sy += sy;
} else {
while (surface && wlr_surface_is_subsurface(surface)) {
struct wlr_subsurface *subsurface =
wlr_subsurface_from_wlr_surface(surface);
if (subsurface == NULL) {
break;
}
*root_sx += subsurface->current.x;
*root_sy += subsurface->current.y;
surface = subsurface->parent;
}
}
}
static void subsurface_destroy(struct sway_view_child *child) {
if (!sway_assert(child->impl == &subsurface_impl,
"Expected a subsurface")) {
return;
}
struct sway_subsurface *subsurface = (struct sway_subsurface *)child;
wl_list_remove(&subsurface->destroy.link);
free(subsurface);
}
static const struct sway_view_child_impl subsurface_impl = {
.get_root_coords = subsurface_get_root_coords,
.destroy = subsurface_destroy,
};
static void subsurface_handle_destroy(struct wl_listener *listener,
void *data) {
struct sway_subsurface *subsurface =
wl_container_of(listener, subsurface, destroy);
struct sway_view_child *child = &subsurface->child;
view_child_destroy(child);
}
static void view_child_damage(struct sway_view_child *child, bool whole);
static void view_subsurface_create(struct sway_view *view,
struct wlr_subsurface *wlr_subsurface) {
struct sway_subsurface *subsurface =
calloc(1, sizeof(struct sway_subsurface));
if (subsurface == NULL) {
sway_log(SWAY_ERROR, "Allocation failed");
return;
}
view_child_init(&subsurface->child, &subsurface_impl, view,
wlr_subsurface->surface);
wl_signal_add(&wlr_subsurface->events.destroy, &subsurface->destroy);
subsurface->destroy.notify = subsurface_handle_destroy;
subsurface->child.mapped = true;
view_child_damage(&subsurface->child, true);
}
static void view_child_subsurface_create(struct sway_view_child *child,
struct wlr_subsurface *wlr_subsurface) {
struct sway_subsurface *subsurface =
calloc(1, sizeof(struct sway_subsurface));
if (subsurface == NULL) {
sway_log(SWAY_ERROR, "Allocation failed");
return;
}
subsurface->child.parent = child;
wl_list_insert(&child->children, &subsurface->child.link);
view_child_init(&subsurface->child, &subsurface_impl, child->view,
wlr_subsurface->surface);
wl_signal_add(&wlr_subsurface->events.destroy, &subsurface->destroy);
subsurface->destroy.notify = subsurface_handle_destroy;
subsurface->child.mapped = true;
view_child_damage(&subsurface->child, true);
}
static void view_child_damage(struct sway_view_child *child, bool whole) {
if (!child || !child->mapped || !child->view || !child->view->container) {
return;
}
int sx, sy;
child->impl->get_root_coords(child, &sx, &sy);
desktop_damage_surface(child->surface,
child->view->container->content_x + sx,
child->view->container->content_y + sy, whole);
}
static void view_child_handle_surface_commit(struct wl_listener *listener,
void *data) {
struct sway_view_child *child =
wl_container_of(listener, child, surface_commit);
view_child_damage(child, false);
}
static void view_child_handle_surface_new_subsurface(
struct wl_listener *listener, void *data) {
struct sway_view_child *child =
wl_container_of(listener, child, surface_new_subsurface);
struct wlr_subsurface *subsurface = data;
view_child_subsurface_create(child, subsurface);
}
static void view_child_handle_surface_destroy(struct wl_listener *listener,
void *data) {
struct sway_view_child *child =
wl_container_of(listener, child, surface_destroy);
view_child_destroy(child);
}
static void view_init_subsurfaces(struct sway_view *view,
struct wlr_surface *surface) {
struct wlr_subsurface *subsurface;
wl_list_for_each(subsurface, &surface->subsurfaces, parent_link) {
view_subsurface_create(view, subsurface);
}
}
static void view_child_handle_surface_map(struct wl_listener *listener,
void *data) {
struct sway_view_child *child =
wl_container_of(listener, child, surface_map);
child->mapped = true;
view_child_damage(child, true);
}
static void view_child_handle_surface_unmap(struct wl_listener *listener,
void *data) {
struct sway_view_child *child =
wl_container_of(listener, child, surface_unmap);
view_child_damage(child, true);
child->mapped = false;
}
static void view_child_handle_view_unmap(struct wl_listener *listener,
void *data) {
struct sway_view_child *child =
wl_container_of(listener, child, view_unmap);
view_child_damage(child, true);
child->mapped = false;
}
void view_child_init(struct sway_view_child *child,
const struct sway_view_child_impl *impl, struct sway_view *view,
struct wlr_surface *surface) {
child->impl = impl;
child->view = view;
child->surface = surface;
wl_list_init(&child->children);
wl_signal_add(&surface->events.commit, &child->surface_commit);
child->surface_commit.notify = view_child_handle_surface_commit;
wl_signal_add(&surface->events.new_subsurface,
&child->surface_new_subsurface);
child->surface_new_subsurface.notify =
view_child_handle_surface_new_subsurface;
wl_signal_add(&surface->events.destroy, &child->surface_destroy);
child->surface_destroy.notify = view_child_handle_surface_destroy;
// Not all child views have a map/unmap event
child->surface_map.notify = view_child_handle_surface_map;
wl_list_init(&child->surface_map.link);
child->surface_unmap.notify = view_child_handle_surface_unmap;
wl_list_init(&child->surface_unmap.link);
wl_signal_add(&view->events.unmap, &child->view_unmap);
child->view_unmap.notify = view_child_handle_view_unmap;
struct sway_workspace *workspace = child->view->container->workspace;
if (workspace) {
wlr_surface_send_enter(child->surface, workspace->output->wlr_output);
}
view_init_subsurfaces(child->view, surface);
}
void view_child_destroy(struct sway_view_child *child) {
if (child->mapped && child->view->container != NULL) {
view_child_damage(child, true);
}
if (child->parent != NULL) {
wl_list_remove(&child->link);
child->parent = NULL;
}
struct sway_view_child *subchild, *tmpchild;
wl_list_for_each_safe(subchild, tmpchild, &child->children, link) {
wl_list_remove(&subchild->link);
subchild->parent = NULL;
}
wl_list_remove(&child->surface_commit.link);
wl_list_remove(&child->surface_destroy.link);
wl_list_remove(&child->surface_map.link);
wl_list_remove(&child->surface_unmap.link);
wl_list_remove(&child->view_unmap.link);
wl_list_remove(&child->surface_new_subsurface.link);
if (child->impl && child->impl->destroy) {
child->impl->destroy(child);
} else {
free(child);
}
}
struct sway_view *view_from_wlr_surface(struct wlr_surface *wlr_surface) {
if (wlr_surface_is_xdg_surface(wlr_surface)) {
struct wlr_xdg_surface *xdg_surface =
wlr_xdg_surface_from_wlr_surface(wlr_surface);
return view_from_wlr_xdg_surface(xdg_surface);
}
#if HAVE_XWAYLAND
if (wlr_surface_is_xwayland_surface(wlr_surface)) {
struct wlr_xwayland_surface *xsurface =
wlr_xwayland_surface_from_wlr_surface(wlr_surface);
return view_from_wlr_xwayland_surface(xsurface);
}
#endif
if (wlr_surface_is_subsurface(wlr_surface)) {
struct wlr_subsurface *subsurface =
wlr_subsurface_from_wlr_surface(wlr_surface);
return view_from_wlr_surface(subsurface->parent);
}
if (wlr_surface_is_layer_surface(wlr_surface)) {
return NULL;
}
const char *role = wlr_surface->role ? wlr_surface->role->name : NULL;
sway_log(SWAY_DEBUG, "Surface of unknown type (role %s): %p",
role, wlr_surface);
return NULL;
}
static char *escape_pango_markup(const char *buffer) {
size_t length = escape_markup_text(buffer, NULL);
char *escaped_title = calloc(length + 1, sizeof(char));
escape_markup_text(buffer, escaped_title);
return escaped_title;
}
static size_t append_prop(char *buffer, const char *value) {
if (!value) {
return 0;
}
// If using pango_markup in font, we need to escape all markup chars
// from values to make sure tags are not inserted by clients
if (config->pango_markup) {
char *escaped_value = escape_pango_markup(value);
lenient_strcat(buffer, escaped_value);
size_t len = strlen(escaped_value);
free(escaped_value);
return len;
} else {
lenient_strcat(buffer, value);
return strlen(value);
}
}
/**
* Calculate and return the length of the formatted title.
* If buffer is not NULL, also populate the buffer with the formatted title.
*/
static size_t parse_title_format(struct sway_view *view, char *buffer) {
if (!view->title_format || strcmp(view->title_format, "%title") == 0) {
return append_prop(buffer, view_get_title(view));
}
size_t len = 0;
char *format = view->title_format;
char *next = strchr(format, '%');
while (next) {
// Copy everything up to the %
lenient_strncat(buffer, format, next - format);
len += next - format;
format = next;
if (strncmp(next, "%title", 6) == 0) {
len += append_prop(buffer, view_get_title(view));
format += 6;
} else if (strncmp(next, "%app_id", 7) == 0) {
len += append_prop(buffer, view_get_app_id(view));
format += 7;
} else if (strncmp(next, "%class", 6) == 0) {
len += append_prop(buffer, view_get_class(view));
format += 6;
} else if (strncmp(next, "%instance", 9) == 0) {
len += append_prop(buffer, view_get_instance(view));
format += 9;
} else if (strncmp(next, "%shell", 6) == 0) {
len += append_prop(buffer, view_get_shell(view));
format += 6;
} else {
lenient_strcat(buffer, "%");
++format;
++len;
}
next = strchr(format, '%');
}
lenient_strcat(buffer, format);
len += strlen(format);
return len;
}
void view_update_title(struct sway_view *view, bool force) {
const char *title = view_get_title(view);
if (!force) {
if (title && view->container->title &&
strcmp(title, view->container->title) == 0) {
return;
}
if (!title && !view->container->title) {
return;
}
}
free(view->container->title);
free(view->container->formatted_title);
if (title) {
size_t len = parse_title_format(view, NULL);
char *buffer = calloc(len + 1, sizeof(char));
if (!sway_assert(buffer, "Unable to allocate title string")) {
return;
}
parse_title_format(view, buffer);
view->container->title = strdup(title);
view->container->formatted_title = buffer;
} else {
view->container->title = NULL;
view->container->formatted_title = NULL;
}
container_calculate_title_height(view->container);
config_update_font_height(false);
// Update title after the global font height is updated
container_update_title_textures(view->container);
ipc_event_window(view->container, "title");
if (view->foreign_toplevel && title) {
wlr_foreign_toplevel_handle_v1_set_title(view->foreign_toplevel, title);
}
}
bool view_is_visible(struct sway_view *view) {
if (view->container->node.destroying) {
return false;
}
struct sway_workspace *workspace = view->container->workspace;
if (!workspace && view->container->fullscreen_mode != FULLSCREEN_GLOBAL) {
bool fs_global_descendant = false;
struct sway_container *parent = view->container->parent;
while (parent) {
if (parent->fullscreen_mode == FULLSCREEN_GLOBAL) {
fs_global_descendant = true;
}
parent = parent->parent;
}
if (!fs_global_descendant) {
return false;
}
}
// Determine if view is nested inside a floating container which is sticky
struct sway_container *floater = view->container;
while (floater->parent) {
floater = floater->parent;
}
bool is_sticky = container_is_floating(floater) && floater->is_sticky;
if (!is_sticky && workspace && !workspace_is_visible(workspace)) {
return false;
}
// Check view isn't in a tabbed or stacked container on an inactive tab
struct sway_seat *seat = input_manager_current_seat();
struct sway_container *con = view->container;
while (con) {
enum sway_container_layout layout = container_parent_layout(con);
if ((layout == L_TABBED || layout == L_STACKED)
&& !container_is_floating(con)) {
struct sway_node *parent = con->parent ?
&con->parent->node : &con->workspace->node;
if (seat_get_active_tiling_child(seat, parent) != &con->node) {
return false;
}
}
con = con->parent;
}
// Check view isn't hidden by another fullscreen view
struct sway_container *fs = root->fullscreen_global ?
root->fullscreen_global : workspace->fullscreen;
if (fs && !container_is_fullscreen_or_child(view->container) &&
!container_is_transient_for(view->container, fs)) {
return false;
}
return true;
}
void view_set_urgent(struct sway_view *view, bool enable) {
if (view_is_urgent(view) == enable) {
return;
}
if (enable) {
struct sway_seat *seat = input_manager_current_seat();
if (seat_get_focused_container(seat) == view->container) {
return;
}
clock_gettime(CLOCK_MONOTONIC, &view->urgent);
} else {
view->urgent = (struct timespec){ 0 };
if (view->urgent_timer) {
wl_event_source_remove(view->urgent_timer);
view->urgent_timer = NULL;
}
}
container_damage_whole(view->container);
ipc_event_window(view->container, "urgent");
if (!container_is_scratchpad_hidden(view->container)) {
workspace_detect_urgent(view->container->workspace);
}
}
bool view_is_urgent(struct sway_view *view) {
return view->urgent.tv_sec || view->urgent.tv_nsec;
}
void view_remove_saved_buffer(struct sway_view *view) {
if (!sway_assert(!wl_list_empty(&view->saved_buffers), "Expected a saved buffer")) {
return;
}
struct sway_saved_buffer *saved_buf, *tmp;
wl_list_for_each_safe(saved_buf, tmp, &view->saved_buffers, link) {
wlr_buffer_unlock(&saved_buf->buffer->base);
wl_list_remove(&saved_buf->link);
free(saved_buf);
}
}
static void view_save_buffer_iterator(struct wlr_surface *surface,
int sx, int sy, void *data) {
struct sway_view *view = data;
if (surface && wlr_surface_has_buffer(surface)) {
wlr_buffer_lock(&surface->buffer->base);
struct sway_saved_buffer *saved_buffer = calloc(1, sizeof(struct sway_saved_buffer));
saved_buffer->buffer = surface->buffer;
saved_buffer->width = surface->current.width;
saved_buffer->height = surface->current.height;
saved_buffer->x = sx;
saved_buffer->y = sy;
saved_buffer->transform = surface->current.transform;
wlr_surface_get_buffer_source_box(surface, &saved_buffer->source_box);
wl_list_insert(&view->saved_buffers, &saved_buffer->link);
}
}
void view_save_buffer(struct sway_view *view) {
if (!sway_assert(wl_list_empty(&view->saved_buffers), "Didn't expect saved buffer")) {
view_remove_saved_buffer(view);
}
view_for_each_surface(view, view_save_buffer_iterator, view);
}
bool view_is_transient_for(struct sway_view *child,
struct sway_view *ancestor) {
return child->impl->is_transient_for &&
child->impl->is_transient_for(child, ancestor);
}