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foot/wayland.c
Daniel Eklöf 1782474481
fractional scaling: another round(!) of rounding fixes 
* Ensure buffer sizes are valid. That is, ensure that
  size / scale * scale == size.
* Do size calculation of the window geometry in the same way we
  calculate the CSD offsets.
2023-07-28 16:03:13 +02:00

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#include "wayland.h"
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <poll.h>
#include <fcntl.h>
#include <sys/timerfd.h>
#include <sys/epoll.h>
#include <wayland-client.h>
#include <wayland-cursor.h>
#include <xkbcommon/xkbcommon-compose.h>
#if defined(HAVE_CURSOR_SHAPE)
#include <cursor-shape-v1.h>
#endif
#include <tllist.h>
#define LOG_MODULE "wayland"
#define LOG_ENABLE_DBG 0
#include "log.h"
#include "config.h"
#include "terminal.h"
#include "ime.h"
#include "input.h"
#include "render.h"
#include "selection.h"
#include "shm.h"
#include "shm-formats.h"
#include "util.h"
#include "xmalloc.h"
static void
csd_reload_font(struct wl_window *win, float old_scale)
{
struct terminal *term = win->term;
const struct config *conf = term->conf;
const float scale = term->scale;
bool enable_csd = win->csd_mode == CSD_YES && !win->is_fullscreen;
if (!enable_csd)
return;
if (win->csd.font != NULL && scale == old_scale)
return;
fcft_destroy(win->csd.font);
const char *patterns[conf->csd.font.count];
for (size_t i = 0; i < conf->csd.font.count; i++)
patterns[i] = conf->csd.font.arr[i].pattern;
char pixelsize[32];
snprintf(pixelsize, sizeof(pixelsize), "pixelsize=%u",
(int)roundf(conf->csd.title_height * scale * 1 / 2));
LOG_DBG("loading CSD font \"%s:%s\" (old-scale=%.2f, scale=%.2f)",
patterns[0], pixelsize, old_scale, scale);
win->csd.font = fcft_from_name(conf->csd.font.count, patterns, pixelsize);
}
static void
csd_instantiate(struct wl_window *win)
{
struct wayland *wayl = win->term->wl;
xassert(wayl != NULL);
for (size_t i = 0; i < CSD_SURF_MINIMIZE; i++) {
bool ret = wayl_win_subsurface_new(win, &win->csd.surface[i], true);
xassert(ret);
}
for (size_t i = CSD_SURF_MINIMIZE; i < CSD_SURF_COUNT; i++) {
bool ret = wayl_win_subsurface_new_with_custom_parent(
win, win->csd.surface[CSD_SURF_TITLE].surface.surf, &win->csd.surface[i],
true);
xassert(ret);
}
csd_reload_font(win, -1.);
}
static void
csd_destroy(struct wl_window *win)
{
struct terminal *term = win->term;
fcft_destroy(term->window->csd.font);
term->window->csd.font = NULL;
for (size_t i = 0; i < ALEN(win->csd.surface); i++)
wayl_win_subsurface_destroy(&win->csd.surface[i]);
shm_purge(term->render.chains.csd);
}
static void
seat_add_data_device(struct seat *seat)
{
if (seat->wayl->data_device_manager == NULL)
return;
if (seat->data_device != NULL) {
/* TODO: destroy old device + clipboard data? */
return;
}
struct wl_data_device *data_device = wl_data_device_manager_get_data_device(
seat->wayl->data_device_manager, seat->wl_seat);
if (data_device == NULL)
return;
seat->data_device = data_device;
wl_data_device_add_listener(data_device, &data_device_listener, seat);
}
static void
seat_add_primary_selection(struct seat *seat)
{
if (seat->wayl->primary_selection_device_manager == NULL)
return;
if (seat->primary_selection_device != NULL)
return;
struct zwp_primary_selection_device_v1 *primary_selection_device
= zwp_primary_selection_device_manager_v1_get_device(
seat->wayl->primary_selection_device_manager, seat->wl_seat);
if (primary_selection_device == NULL)
return;
seat->primary_selection_device = primary_selection_device;
zwp_primary_selection_device_v1_add_listener(
primary_selection_device, &primary_selection_device_listener, seat);
}
static void
seat_add_text_input(struct seat *seat)
{
#if defined(FOOT_IME_ENABLED) && FOOT_IME_ENABLED
if (seat->wayl->text_input_manager == NULL)
return;
struct zwp_text_input_v3 *text_input
= zwp_text_input_manager_v3_get_text_input(
seat->wayl->text_input_manager, seat->wl_seat);
if (text_input == NULL)
return;
seat->wl_text_input = text_input;
zwp_text_input_v3_add_listener(text_input, &text_input_listener, seat);
#endif
}
static void
seat_add_key_bindings(struct seat *seat)
{
key_binding_new_for_seat(seat->wayl->key_binding_manager, seat);
}
static void
seat_destroy(struct seat *seat)
{
if (seat == NULL)
return;
tll_free(seat->mouse.buttons);
key_binding_remove_seat(seat->wayl->key_binding_manager, seat);
if (seat->kbd.xkb_compose_state != NULL)
xkb_compose_state_unref(seat->kbd.xkb_compose_state);
if (seat->kbd.xkb_compose_table != NULL)
xkb_compose_table_unref(seat->kbd.xkb_compose_table);
if (seat->kbd.xkb_keymap != NULL)
xkb_keymap_unref(seat->kbd.xkb_keymap);
if (seat->kbd.xkb_state != NULL)
xkb_state_unref(seat->kbd.xkb_state);
if (seat->kbd.xkb != NULL)
xkb_context_unref(seat->kbd.xkb);
if (seat->kbd.repeat.fd >= 0)
fdm_del(seat->wayl->fdm, seat->kbd.repeat.fd);
if (seat->pointer.theme != NULL)
wl_cursor_theme_destroy(seat->pointer.theme);
if (seat->pointer.surface.surf != NULL)
wl_surface_destroy(seat->pointer.surface.surf);
#if defined(HAVE_FRACTIONAL_SCALE)
if (seat->pointer.surface.viewport != NULL)
wp_viewport_destroy(seat->pointer.surface.viewport);
#endif
if (seat->pointer.xcursor_callback != NULL)
wl_callback_destroy(seat->pointer.xcursor_callback);
if (seat->clipboard.data_source != NULL)
wl_data_source_destroy(seat->clipboard.data_source);
if (seat->clipboard.data_offer != NULL)
wl_data_offer_destroy(seat->clipboard.data_offer);
if (seat->primary.data_source != NULL)
zwp_primary_selection_source_v1_destroy(seat->primary.data_source);
if (seat->primary.data_offer != NULL)
zwp_primary_selection_offer_v1_destroy(seat->primary.data_offer);
if (seat->primary_selection_device != NULL)
zwp_primary_selection_device_v1_destroy(seat->primary_selection_device);
if (seat->data_device != NULL)
wl_data_device_release(seat->data_device);
#if defined(HAVE_CURSOR_SHAPE)
if (seat->pointer.shape_device != NULL)
wp_cursor_shape_device_v1_destroy(seat->pointer.shape_device);
#endif
if (seat->wl_keyboard != NULL)
wl_keyboard_release(seat->wl_keyboard);
if (seat->wl_pointer != NULL)
wl_pointer_release(seat->wl_pointer);
if (seat->wl_touch != NULL)
wl_touch_release(seat->wl_touch);
#if defined(FOOT_IME_ENABLED) && FOOT_IME_ENABLED
if (seat->wl_text_input != NULL)
zwp_text_input_v3_destroy(seat->wl_text_input);
#endif
if (seat->wl_seat != NULL)
wl_seat_release(seat->wl_seat);
ime_reset_pending(seat);
free(seat->clipboard.text);
free(seat->primary.text);
free(seat->pointer.last_custom_xcursor);
free(seat->name);
}
static void
shm_format(void *data, struct wl_shm *wl_shm, uint32_t format)
{
struct wayland *wayl = data;
#if defined(_DEBUG)
bool have_description = false;
for (size_t i = 0; i < ALEN(shm_formats); i++) {
if (shm_formats[i].format == format) {
LOG_DBG("shm: 0x%08x: %s", format, shm_formats[i].description);
have_description = true;
break;
}
}
if (!have_description)
LOG_DBG("shm: 0x%08x: unknown", format);
#endif
if (format == WL_SHM_FORMAT_ARGB8888)
wayl->have_argb8888 = true;
}
static const struct wl_shm_listener shm_listener = {
.format = &shm_format,
};
static void
xdg_wm_base_ping(void *data, struct xdg_wm_base *shell, uint32_t serial)
{
LOG_DBG("wm base ping");
xdg_wm_base_pong(shell, serial);
}
static const struct xdg_wm_base_listener xdg_wm_base_listener = {
.ping = &xdg_wm_base_ping,
};
static void
seat_handle_capabilities(void *data, struct wl_seat *wl_seat,
enum wl_seat_capability caps)
{
struct seat *seat = data;
xassert(seat->wl_seat == wl_seat);
LOG_DBG("%s: keyboard=%s, pointer=%s, touch=%s", seat->name,
(caps & WL_SEAT_CAPABILITY_KEYBOARD) ? "yes" : "no",
(caps & WL_SEAT_CAPABILITY_POINTER) ? "yes" : "no",
(caps & WL_SEAT_CAPABILITY_TOUCH) ? "yes" : "no");
if (caps & WL_SEAT_CAPABILITY_KEYBOARD) {
if (seat->wl_keyboard == NULL) {
seat->wl_keyboard = wl_seat_get_keyboard(wl_seat);
wl_keyboard_add_listener(seat->wl_keyboard, &keyboard_listener, seat);
}
} else {
if (seat->wl_keyboard != NULL) {
wl_keyboard_release(seat->wl_keyboard);
seat->wl_keyboard = NULL;
}
}
if (caps & WL_SEAT_CAPABILITY_POINTER) {
if (seat->wl_pointer == NULL) {
xassert(seat->pointer.surface.surf == NULL);
seat->pointer.surface.surf =
wl_compositor_create_surface(seat->wayl->compositor);
if (seat->pointer.surface.surf == NULL) {
LOG_ERR("%s: failed to create pointer surface", seat->name);
return;
}
#if defined(HAVE_FRACTIONAL_SCALE)
if (seat->wayl->viewporter != NULL) {
xassert(seat->pointer.surface.viewport == NULL);
seat->pointer.surface.viewport = wp_viewporter_get_viewport(
seat->wayl->viewporter, seat->pointer.surface.surf);
if (seat->pointer.surface.viewport == NULL) {
LOG_ERR("%s: failed to create pointer viewport", seat->name);
wl_surface_destroy(seat->pointer.surface.surf);
seat->pointer.surface.surf = NULL;
return;
}
}
#endif
seat->wl_pointer = wl_seat_get_pointer(wl_seat);
wl_pointer_add_listener(seat->wl_pointer, &pointer_listener, seat);
#if defined(HAVE_CURSOR_SHAPE)
if (seat->wayl->cursor_shape_manager != NULL) {
xassert(seat->pointer.shape_device == NULL);
seat->pointer.shape_device = wp_cursor_shape_manager_v1_get_pointer(
seat->wayl->cursor_shape_manager, seat->wl_pointer);
}
#endif
}
} else {
if (seat->wl_pointer != NULL) {
#if defined(HAVE_CURSOR_SHAPE)
if (seat->pointer.shape_device != NULL) {
wp_cursor_shape_device_v1_destroy(seat->pointer.shape_device);
seat->pointer.shape_device = NULL;
}
#endif
wl_pointer_release(seat->wl_pointer);
wl_surface_destroy(seat->pointer.surface.surf);
#if defined(HAVE_FRACTIONAL_SCALE)
if (seat->pointer.surface.viewport != NULL) {
wp_viewport_destroy(seat->pointer.surface.viewport);
seat->pointer.surface.viewport = NULL;
}
#endif
if (seat->pointer.theme != NULL)
wl_cursor_theme_destroy(seat->pointer.theme);
seat->wl_pointer = NULL;
seat->pointer.surface.surf = NULL;
seat->pointer.theme = NULL;
seat->pointer.cursor = NULL;
}
}
if (caps & WL_SEAT_CAPABILITY_TOUCH) {
if (seat->wl_touch == NULL) {
seat->wl_touch = wl_seat_get_touch(wl_seat);
wl_touch_add_listener(seat->wl_touch, &touch_listener, seat);
seat->touch.state = TOUCH_STATE_IDLE;
}
} else {
if (seat->wl_touch != NULL) {
wl_touch_release(seat->wl_touch);
seat->wl_touch = NULL;
}
seat->touch.state = TOUCH_STATE_INHIBITED;
}
}
static void
seat_handle_name(void *data, struct wl_seat *wl_seat, const char *name)
{
struct seat *seat = data;
free(seat->name);
seat->name = xstrdup(name);
}
static const struct wl_seat_listener seat_listener = {
.capabilities = seat_handle_capabilities,
.name = seat_handle_name,
};
static void
update_term_for_output_change(struct terminal *term)
{
const float old_scale = term->scale;
const float logical_width = term->width / term->scale;
const float logical_height = term->height / term->scale;
/* Note: order matters! term_update_scale() must come first */
bool scale_updated = term_update_scale(term);
bool fonts_updated = term_font_dpi_changed(term, old_scale);
term_font_subpixel_changed(term);
csd_reload_font(term->window, old_scale);
if (fonts_updated) {
/*
* If the fonts have been updated, the cell dimensions have
* changed. This requires a “forced” resize, since the surface
* buffer dimensions may not have been updated (in which case
* render_size() normally shortcuts and returns early).
*/
render_resize_force(term, (int)roundf(logical_width), (int)roundf(logical_height));
}
else if (scale_updated) {
/*
* A scale update means the surface buffer dimensions have
* been updated, even though the window logical dimensions
* haven’t changed.
*/
render_resize(term, (int)roundf(logical_width), (int)roundf(logical_height));
}
}
static void
update_terms_on_monitor(struct monitor *mon)
{
struct wayland *wayl = mon->wayl;
tll_foreach(wayl->terms, it) {
struct terminal *term = it->item;
tll_foreach(term->window->on_outputs, it2) {
if (it2->item == mon) {
update_term_for_output_change(term);
break;
}
}
}
}
static void
output_update_ppi(struct monitor *mon)
{
if (mon->dim.mm.width <= 0 || mon->dim.mm.height <= 0)
return;
double x_inches = mon->dim.mm.width * 0.03937008;
double y_inches = mon->dim.mm.height * 0.03937008;
const int width = mon->dim.px_real.width;
const int height = mon->dim.px_real.height;
mon->ppi.real.x = mon->dim.px_real.width / x_inches;
mon->ppi.real.y = mon->dim.px_real.height / y_inches;
/* The *logical* size is affected by the transform */
switch (mon->transform) {
case WL_OUTPUT_TRANSFORM_90:
case WL_OUTPUT_TRANSFORM_270:
case WL_OUTPUT_TRANSFORM_FLIPPED_90:
case WL_OUTPUT_TRANSFORM_FLIPPED_270: {
int swap = x_inches;
x_inches = y_inches;
y_inches = swap;
break;
}
case WL_OUTPUT_TRANSFORM_NORMAL:
case WL_OUTPUT_TRANSFORM_180:
case WL_OUTPUT_TRANSFORM_FLIPPED:
case WL_OUTPUT_TRANSFORM_FLIPPED_180:
break;
}
const int scaled_width = mon->dim.px_scaled.width;
const int scaled_height = mon->dim.px_scaled.height;
mon->ppi.scaled.x = scaled_width / x_inches;
mon->ppi.scaled.y = scaled_height / y_inches;
const double px_diag_physical = sqrt(pow(width, 2) + pow(height, 2));
mon->dpi.physical = width == 0 && height == 0
? 96.
: px_diag_physical / mon->inch;
const double px_diag_scaled = sqrt(pow(scaled_width, 2) + pow(scaled_height, 2));
mon->dpi.scaled = scaled_width == 0 && scaled_height == 0
? 96.
: px_diag_scaled / mon->inch * mon->scale;
if (mon->dpi.physical > 1000) {
if (mon->name != NULL) {
LOG_WARN("%s: DPI=%f (physical) is unreasonable, using 96 instead",
mon->name, mon->dpi.physical);
}
mon->dpi.physical = 96;
}
if (mon->dpi.scaled > 1000) {
if (mon->name != NULL) {
LOG_WARN("%s: DPI=%f (logical) is unreasonable, using 96 instead",
mon->name, mon->dpi.scaled);
}
mon->dpi.scaled = 96;
}
}
static void
output_geometry(void *data, struct wl_output *wl_output, int32_t x, int32_t y,
int32_t physical_width, int32_t physical_height,
int32_t subpixel, const char *make, const char *model,
int32_t transform)
{
struct monitor *mon = data;
free(mon->make);
free(mon->model);
mon->dim.mm.width = physical_width;
mon->dim.mm.height = physical_height;
mon->inch = sqrt(pow(mon->dim.mm.width, 2) + pow(mon->dim.mm.height, 2)) * 0.03937008;
mon->make = make != NULL ? xstrdup(make) : NULL;
mon->model = model != NULL ? xstrdup(model) : NULL;
mon->subpixel = subpixel;
mon->transform = transform;
output_update_ppi(mon);
}
static void
output_mode(void *data, struct wl_output *wl_output, uint32_t flags,
int32_t width, int32_t height, int32_t refresh)
{
if ((flags & WL_OUTPUT_MODE_CURRENT) == 0)
return;
struct monitor *mon = data;
mon->refresh = (float)refresh / 1000;
mon->dim.px_real.width = width;
mon->dim.px_real.height = height;
output_update_ppi(mon);
}
static void
output_done(void *data, struct wl_output *wl_output)
{
struct monitor *mon = data;
update_terms_on_monitor(mon);
}
static void
output_scale(void *data, struct wl_output *wl_output, int32_t factor)
{
struct monitor *mon = data;
mon->scale = factor;
output_update_ppi(mon);
}
#if defined(WL_OUTPUT_NAME_SINCE_VERSION)
static void
output_name(void *data, struct wl_output *wl_output, const char *name)
{
struct monitor *mon = data;
free(mon->name);
mon->name = name != NULL ? xstrdup(name) : NULL;
}
#endif
#if defined(WL_OUTPUT_DESCRIPTION_SINCE_VERSION)
static void
output_description(void *data, struct wl_output *wl_output,
const char *description)
{
struct monitor *mon = data;
free(mon->description);
mon->description = description != NULL ? xstrdup(description) : NULL;
}
#endif
static const struct wl_output_listener output_listener = {
.geometry = &output_geometry,
.mode = &output_mode,
.done = &output_done,
.scale = &output_scale,
#if defined(WL_OUTPUT_NAME_SINCE_VERSION)
.name = &output_name,
#endif
#if defined(WL_OUTPUT_DESCRIPTION_SINCE_VERSION)
.description = &output_description,
#endif
};
static void
xdg_output_handle_logical_position(
void *data, struct zxdg_output_v1 *xdg_output, int32_t x, int32_t y)
{
struct monitor *mon = data;
mon->x = x;
mon->y = y;
}
static void
xdg_output_handle_logical_size(void *data, struct zxdg_output_v1 *xdg_output,
int32_t width, int32_t height)
{
struct monitor *mon = data;
mon->dim.px_scaled.width = width;
mon->dim.px_scaled.height = height;
output_update_ppi(mon);
}
static void
xdg_output_handle_done(void *data, struct zxdg_output_v1 *xdg_output)
{
struct monitor *mon = data;
update_terms_on_monitor(mon);
}
static void
xdg_output_handle_name(void *data, struct zxdg_output_v1 *xdg_output,
const char *name)
{
struct monitor *mon = data;
free(mon->name);
mon->name = name != NULL ? xstrdup(name) : NULL;
}
static void
xdg_output_handle_description(void *data, struct zxdg_output_v1 *xdg_output,
const char *description)
{
struct monitor *mon = data;
free(mon->description);
mon->description = description != NULL ? xstrdup(description) : NULL;
}
static const struct zxdg_output_v1_listener xdg_output_listener = {
.logical_position = xdg_output_handle_logical_position,
.logical_size = xdg_output_handle_logical_size,
.done = xdg_output_handle_done,
.name = xdg_output_handle_name,
.description = xdg_output_handle_description,
};
static void
clock_id(void *data, struct wp_presentation *wp_presentation, uint32_t clk_id)
{
struct wayland *wayl = data;
wayl->presentation_clock_id = clk_id;
LOG_DBG("presentation clock ID: %u", clk_id);
}
static const struct wp_presentation_listener presentation_listener = {
.clock_id = &clock_id,
};
static bool
verify_iface_version(const char *iface, uint32_t version, uint32_t wanted)
{
if (version >= wanted)
return true;
LOG_ERR("%s: need interface version %u, but compositor only implements %u",
iface, wanted, version);
return false;
}
static void
surface_enter(void *data, struct wl_surface *wl_surface,
struct wl_output *wl_output)
{
struct wl_window *win = data;
struct terminal *term = win->term;
tll_foreach(term->wl->monitors, it) {
if (it->item.output == wl_output) {
LOG_DBG("mapped on %s", it->item.name);
tll_push_back(term->window->on_outputs, &it->item);
update_term_for_output_change(term);
return;
}
}
LOG_ERR("mapped on unknown output");
}
static void
surface_leave(void *data, struct wl_surface *wl_surface,
struct wl_output *wl_output)
{
struct wl_window *win = data;
struct terminal *term = win->term;
tll_foreach(term->window->on_outputs, it) {
if (it->item->output != wl_output)
continue;
LOG_DBG("unmapped from %s", it->item->name);
tll_remove(term->window->on_outputs, it);
update_term_for_output_change(term);
return;
}
LOG_WARN("unmapped from unknown output");
}
static const struct wl_surface_listener surface_listener = {
.enter = &surface_enter,
.leave = &surface_leave,
};
static void
xdg_toplevel_configure(void *data, struct xdg_toplevel *xdg_toplevel,
int32_t width, int32_t height, struct wl_array *states)
{
bool is_activated = false;
bool is_fullscreen = false;
bool is_maximized = false;
bool is_resizing = false;
bool is_tiled_top = false;
bool is_tiled_bottom = false;
bool is_tiled_left = false;
bool is_tiled_right = false;
bool is_suspended UNUSED = false;
#if defined(LOG_ENABLE_DBG) && LOG_ENABLE_DBG
char state_str[2048];
int state_chars = 0;
static const char *const strings[] = {
[XDG_TOPLEVEL_STATE_MAXIMIZED] = "maximized",
[XDG_TOPLEVEL_STATE_FULLSCREEN] = "fullscreen",
[XDG_TOPLEVEL_STATE_RESIZING] = "resizing",
[XDG_TOPLEVEL_STATE_ACTIVATED] = "activated",
[XDG_TOPLEVEL_STATE_TILED_LEFT] = "tiled:left",
[XDG_TOPLEVEL_STATE_TILED_RIGHT] = "tiled:right",
[XDG_TOPLEVEL_STATE_TILED_TOP] = "tiled:top",
[XDG_TOPLEVEL_STATE_TILED_BOTTOM] = "tiled:bottom",
#if defined(XDG_TOPLEVEL_STATE_SUSPENDED_SINCE_VERSION) /* wayland-protocols >= 1.32 */
[XDG_TOPLEVEL_STATE_SUSPENDED] = "suspended",
#endif
};
#endif
enum xdg_toplevel_state *state;
wl_array_for_each(state, states) {
switch (*state) {
case XDG_TOPLEVEL_STATE_MAXIMIZED: is_maximized = true; break;
case XDG_TOPLEVEL_STATE_FULLSCREEN: is_fullscreen = true; break;
case XDG_TOPLEVEL_STATE_RESIZING: is_resizing = true; break;
case XDG_TOPLEVEL_STATE_ACTIVATED: is_activated = true; break;
case XDG_TOPLEVEL_STATE_TILED_LEFT: is_tiled_left = true; break;
case XDG_TOPLEVEL_STATE_TILED_RIGHT: is_tiled_right = true; break;
case XDG_TOPLEVEL_STATE_TILED_TOP: is_tiled_top = true; break;
case XDG_TOPLEVEL_STATE_TILED_BOTTOM: is_tiled_bottom = true; break;
#if defined(XDG_TOPLEVEL_STATE_SUSPENDED_SINCE_VERSION)
case XDG_TOPLEVEL_STATE_SUSPENDED: is_suspended = true; break;
#endif
}
#if defined(LOG_ENABLE_DBG) && LOG_ENABLE_DBG
if (*state >= 0 && *state < ALEN(strings)) {
state_chars += snprintf(
&state_str[state_chars], sizeof(state_str) - state_chars,
"%s, ",
strings[*state] != NULL ? strings[*state] : "<unknown>");
}
#endif
}
#if defined(LOG_ENABLE_DBG) && LOG_ENABLE_DBG
if (state_chars > 2)
state_str[state_chars - 2] = '\0';
else
state_str[0] = '\0';
LOG_DBG("xdg-toplevel: configure: size=%dx%d, states=[%s]",
width, height, state_str);
#endif
/*
* Changes done here are ignored until the configure event has
* been ack:ed in xdg_surface_configure().
*
* So, just store the config data and apply it later, in
* xdg_surface_configure() after we've ack:ed the event.
*/
struct wl_window *win = data;
win->configure.is_activated = is_activated;
win->configure.is_fullscreen = is_fullscreen;
win->configure.is_maximized = is_maximized;
win->configure.is_resizing = is_resizing;
win->configure.is_tiled_top = is_tiled_top;
win->configure.is_tiled_bottom = is_tiled_bottom;
win->configure.is_tiled_left = is_tiled_left;
win->configure.is_tiled_right = is_tiled_right;
win->configure.width = width;
win->configure.height = height;
}
static void
xdg_toplevel_close(void *data, struct xdg_toplevel *xdg_toplevel)
{
struct wl_window *win = data;
struct terminal *term = win->term;
LOG_DBG("xdg-toplevel: close");
term_shutdown(term);
}
#if defined(XDG_TOPLEVEL_CONFIGURE_BOUNDS_SINCE_VERSION)
static void
xdg_toplevel_configure_bounds(void *data,
struct xdg_toplevel *xdg_toplevel,
int32_t width, int32_t height)
{
/* TODO: ensure we don't pick a bigger size */
}
#endif
#if defined(XDG_TOPLEVEL_WM_CAPABILITIES_SINCE_VERSION)
static void
xdg_toplevel_wm_capabilities(void *data,
struct xdg_toplevel *xdg_toplevel,
struct wl_array *caps)
{
struct wl_window *win = data;
win->wm_capabilities.maximize = false;
win->wm_capabilities.minimize = false;
uint32_t *cap_ptr;
wl_array_for_each(cap_ptr, caps) {
switch (*cap_ptr) {
case XDG_TOPLEVEL_WM_CAPABILITIES_MAXIMIZE:
win->wm_capabilities.maximize = true;
break;
case XDG_TOPLEVEL_WM_CAPABILITIES_MINIMIZE:
win->wm_capabilities.minimize = true;
break;
}
}
}
#endif
static const struct xdg_toplevel_listener xdg_toplevel_listener = {
.configure = &xdg_toplevel_configure,
/*.close = */&xdg_toplevel_close, /* epoll-shim defines a macro ‘close’... */
#if defined(XDG_TOPLEVEL_CONFIGURE_BOUNDS_SINCE_VERSION)
.configure_bounds = &xdg_toplevel_configure_bounds,
#endif
#if defined(XDG_TOPLEVEL_WM_CAPABILITIES_SINCE_VERSION)
.wm_capabilities = xdg_toplevel_wm_capabilities,
#endif
};
static void
xdg_surface_configure(void *data, struct xdg_surface *xdg_surface,
uint32_t serial)
{
LOG_DBG("xdg-surface: configure");
struct wl_window *win = data;
struct terminal *term = win->term;
if (win->unmapped) {
/*
* https://codeberg.org/dnkl/foot/issues/1249
* https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/3487
* https://gitlab.freedesktop.org/wlroots/wlroots/-/merge_requests/3719
* https://gitlab.freedesktop.org/wayland/wayland-protocols/-/issues/108
*/
return;
}
bool wasnt_configured = !win->is_configured;
bool was_resizing = win->is_resizing;
bool csd_was_enabled = win->csd_mode == CSD_YES && !win->is_fullscreen;
int new_width = win->configure.width;
int new_height = win->configure.height;
win->is_configured = true;
win->is_maximized = win->configure.is_maximized;
win->is_fullscreen = win->configure.is_fullscreen;
win->is_resizing = win->configure.is_resizing;
win->is_tiled_top = win->configure.is_tiled_top;
win->is_tiled_bottom = win->configure.is_tiled_bottom;
win->is_tiled_left = win->configure.is_tiled_left;
win->is_tiled_right = win->configure.is_tiled_right;
win->is_tiled = (win->is_tiled_top ||
win->is_tiled_bottom ||
win->is_tiled_left ||
win->is_tiled_right);
win->csd_mode = win->configure.csd_mode;
bool enable_csd = win->csd_mode == CSD_YES && !win->is_fullscreen;
if (!csd_was_enabled && enable_csd)
csd_instantiate(win);
else if (csd_was_enabled && !enable_csd)
csd_destroy(win);
if (enable_csd && new_width > 0 && new_height > 0) {
if (wayl_win_csd_titlebar_visible(win))
new_height -= win->term->conf->csd.title_height;
if (wayl_win_csd_borders_visible(win)) {
new_height -= 2 * win->term->conf->csd.border_width_visible;
new_width -= 2 * win->term->conf->csd.border_width_visible;
}
}
xdg_surface_ack_configure(xdg_surface, serial);
#if 1
/*
* TODO: decide if we should do the last “forced” call when ending
* an interactive resize.
*
* Without it, the last TIOCSWINSZ sent to the client will be a
* scheduled one. I.e. there will be a small delay after the user
* has *stopped* resizing, and the client application receives the
* final size.
*
* Note: if we also disable content centering while resizing, then
* the last, forced, resize *is* necessary.
*/
bool resized = was_resizing && !win->is_resizing
? render_resize_force(term, new_width, new_height)
: render_resize(term, new_width, new_height);
#else
bool resized = render_resize(term, new_width, new_height);
#endif
if (win->configure.is_activated)
term_visual_focus_in(term);
else
term_visual_focus_out(term);
if (!resized) {
/*
* If we didn't resize, we won't be committing a new surface
* anytime soon. Some compositors require a commit in
* combination with an ack - make them happy.
*/
wl_surface_commit(win->surface.surf);
}
if (wasnt_configured)
term_window_configured(term);
}
static const struct xdg_surface_listener xdg_surface_listener = {
.configure = &xdg_surface_configure,
};
static void
xdg_toplevel_decoration_configure(void *data,
struct zxdg_toplevel_decoration_v1 *zxdg_toplevel_decoration_v1,
uint32_t mode)
{
struct wl_window *win = data;
xassert(win->term->conf->csd.preferred != CONF_CSD_PREFER_NONE);
switch (mode) {
case ZXDG_TOPLEVEL_DECORATION_V1_MODE_CLIENT_SIDE:
LOG_INFO("using CSD decorations");
win->configure.csd_mode = CSD_YES;
break;
case ZXDG_TOPLEVEL_DECORATION_V1_MODE_SERVER_SIDE:
LOG_INFO("using SSD decorations");
win->configure.csd_mode = CSD_NO;
break;
default:
LOG_ERR("unimplemented: unknown XDG toplevel decoration mode: %u", mode);
break;
}
}
static const struct zxdg_toplevel_decoration_v1_listener xdg_toplevel_decoration_listener = {
.configure = &xdg_toplevel_decoration_configure,
};
static bool
fdm_repeat(struct fdm *fdm, int fd, int events, void *data)
{
if (events & EPOLLHUP)
return false;
struct seat *seat = data;
uint64_t expiration_count;
ssize_t ret = read(
seat->kbd.repeat.fd, &expiration_count, sizeof(expiration_count));
if (ret < 0) {
if (errno == EAGAIN)
return true;
LOG_ERRNO("failed to read repeat key from repeat timer fd");
return false;
}
seat->kbd.repeat.dont_re_repeat = true;
for (size_t i = 0; i < expiration_count; i++)
input_repeat(seat, seat->kbd.repeat.key);
seat->kbd.repeat.dont_re_repeat = false;
return true;
}
static void
handle_global(void *data, struct wl_registry *registry,
uint32_t name, const char *interface, uint32_t version)
{
LOG_DBG("global: 0x%08x, interface=%s, version=%u", name, interface, version);
struct wayland *wayl = data;
if (strcmp(interface, wl_compositor_interface.name) == 0) {
const uint32_t required = 4;
if (!verify_iface_version(interface, version, required))
return;
wayl->compositor = wl_registry_bind(
wayl->registry, name, &wl_compositor_interface, required);
}
else if (strcmp(interface, wl_subcompositor_interface.name) == 0) {
const uint32_t required = 1;
if (!verify_iface_version(interface, version, required))
return;
wayl->sub_compositor = wl_registry_bind(
wayl->registry, name, &wl_subcompositor_interface, required);
}
else if (strcmp(interface, wl_shm_interface.name) == 0) {
const uint32_t required = 1;
if (!verify_iface_version(interface, version, required))
return;
wayl->shm = wl_registry_bind(
wayl->registry, name, &wl_shm_interface, required);
wl_shm_add_listener(wayl->shm, &shm_listener, wayl);
}
else if (strcmp(interface, xdg_wm_base_interface.name) == 0) {
const uint32_t required = 1;
if (!verify_iface_version(interface, version, required))
return;
/*
* We *require* version 1, but _can_ use version 5. Version 2
* adds 'tiled' window states. We use that information to
* restore the window size when window is un-tiled. Version 5
* adds 'wm_capabilities'. We use that information to draw
* window decorations.
*/
#if defined(XDG_TOPLEVEL_WM_CAPABILITIES_SINCE_VERSION)
const uint32_t preferred = XDG_TOPLEVEL_WM_CAPABILITIES_SINCE_VERSION;
#elif defined(XDG_TOPLEVEL_STATE_TILED_LEFT_SINCE_VERSION)
const uint32_t preferred = XDG_TOPLEVEL_STATE_TILED_LEFT_SINCE_VERSION;
#else
const uint32_t preferred = required;
#endif
wayl->shell = wl_registry_bind(
wayl->registry, name, &xdg_wm_base_interface, min(version, preferred));
xdg_wm_base_add_listener(wayl->shell, &xdg_wm_base_listener, wayl);
}
else if (strcmp(interface, zxdg_decoration_manager_v1_interface.name) == 0) {
const uint32_t required = 1;
if (!verify_iface_version(interface, version, required))
return;
wayl->xdg_decoration_manager = wl_registry_bind(
wayl->registry, name, &zxdg_decoration_manager_v1_interface, required);
}
else if (strcmp(interface, wl_seat_interface.name) == 0) {
const uint32_t required = 5;
if (!verify_iface_version(interface, version, required))
return;
int repeat_fd = timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC | TFD_NONBLOCK);
if (repeat_fd == -1) {
LOG_ERRNO("failed to create keyboard repeat timer FD");
return;
}
struct wl_seat *wl_seat = wl_registry_bind(
wayl->registry, name, &wl_seat_interface, required);
tll_push_back(wayl->seats, ((struct seat){
.wayl = wayl,
.wl_seat = wl_seat,
.wl_name = name,
.kbd = {
.repeat = {
.fd = repeat_fd,
},
}}));
struct seat *seat = &tll_back(wayl->seats);
if (!fdm_add(wayl->fdm, repeat_fd, EPOLLIN, &fdm_repeat, seat)) {
close(repeat_fd);
seat->kbd.repeat.fd = -1;
seat_destroy(seat);
return;
}
seat_add_data_device(seat);
seat_add_primary_selection(seat);
seat_add_text_input(seat);
seat_add_key_bindings(seat);
wl_seat_add_listener(wl_seat, &seat_listener, seat);
}
else if (strcmp(interface, zxdg_output_manager_v1_interface.name) == 0) {
const uint32_t required = 1;
if (!verify_iface_version(interface, version, required))
return;
wayl->xdg_output_manager = wl_registry_bind(
wayl->registry, name, &zxdg_output_manager_v1_interface,
min(version, 2));
tll_foreach(wayl->monitors, it) {
struct monitor *mon = &it->item;
mon->xdg = zxdg_output_manager_v1_get_xdg_output(
wayl->xdg_output_manager, mon->output);
zxdg_output_v1_add_listener(mon->xdg, &xdg_output_listener, mon);
}
}
else if (strcmp(interface, wl_output_interface.name) == 0) {
const uint32_t required = 2;
if (!verify_iface_version(interface, version, required))
return;
#if defined(WL_OUTPUT_NAME_SINCE_VERSION)
const uint32_t preferred = WL_OUTPUT_NAME_SINCE_VERSION;
#elif defined(WL_OUTPUT_RELEASE_SINCE_VERSION)
const uint32_t preferred = WL_OUTPUT_RELEASE_SINCE_VERSION;
#else
const uint32_t preferred = required;
#endif
struct wl_output *output = wl_registry_bind(
wayl->registry, name, &wl_output_interface, min(version, preferred));
tll_push_back(
wayl->monitors,
((struct monitor){.wayl = wayl, .output = output, .wl_name = name,
.scale = 1,
.use_output_release = version >= WL_OUTPUT_RELEASE_SINCE_VERSION}));
struct monitor *mon = &tll_back(wayl->monitors);
wl_output_add_listener(output, &output_listener, mon);
if (wayl->xdg_output_manager != NULL) {
mon->xdg = zxdg_output_manager_v1_get_xdg_output(
wayl->xdg_output_manager, mon->output);
zxdg_output_v1_add_listener(mon->xdg, &xdg_output_listener, mon);
}
}
else if (strcmp(interface, wl_data_device_manager_interface.name) == 0) {
const uint32_t required = 3;
if (!verify_iface_version(interface, version, required))
return;
wayl->data_device_manager = wl_registry_bind(
wayl->registry, name, &wl_data_device_manager_interface, required);
tll_foreach(wayl->seats, it)
seat_add_data_device(&it->item);
}
else if (strcmp(interface, zwp_primary_selection_device_manager_v1_interface.name) == 0) {
const uint32_t required = 1;
if (!verify_iface_version(interface, version, required))
return;
wayl->primary_selection_device_manager = wl_registry_bind(
wayl->registry, name,
&zwp_primary_selection_device_manager_v1_interface, required);
tll_foreach(wayl->seats, it)
seat_add_primary_selection(&it->item);
}
else if (strcmp(interface, wp_presentation_interface.name) == 0) {
if (wayl->presentation_timings) {
const uint32_t required = 1;
if (!verify_iface_version(interface, version, required))
return;
wayl->presentation = wl_registry_bind(
wayl->registry, name, &wp_presentation_interface, required);
wp_presentation_add_listener(
wayl->presentation, &presentation_listener, wayl);
}
}
#if defined(HAVE_XDG_ACTIVATION)
else if (strcmp(interface, xdg_activation_v1_interface.name) == 0) {
const uint32_t required = 1;
if (!verify_iface_version(interface, version, required))
return;
wayl->xdg_activation = wl_registry_bind(
wayl->registry, name, &xdg_activation_v1_interface, required);
}
#endif
#if defined(HAVE_FRACTIONAL_SCALE)
else if (strcmp(interface, wp_viewporter_interface.name) == 0) {
const uint32_t required = 1;
if (!verify_iface_version(interface, version, required))
return;
wayl->viewporter = wl_registry_bind(
wayl->registry, name, &wp_viewporter_interface, required);
}
else if (strcmp(interface, wp_fractional_scale_manager_v1_interface.name) == 0) {
const uint32_t required = 1;
if (!verify_iface_version(interface, version, required))
return;
wayl->fractional_scale_manager = wl_registry_bind(
wayl->registry, name,
&wp_fractional_scale_manager_v1_interface, required);
}
#endif
#if defined(HAVE_CURSOR_SHAPE)
else if (strcmp(interface, wp_cursor_shape_manager_v1_interface.name) == 0) {
const uint32_t required = 1;
if (!verify_iface_version(interface, version, required))
return;
wayl->cursor_shape_manager = wl_registry_bind(
wayl->registry, name, &wp_cursor_shape_manager_v1_interface, required);
}
#endif
#if defined(FOOT_IME_ENABLED) && FOOT_IME_ENABLED
else if (strcmp(interface, zwp_text_input_manager_v3_interface.name) == 0) {
const uint32_t required = 1;
if (!verify_iface_version(interface, version, required))
return;
wayl->text_input_manager = wl_registry_bind(
wayl->registry, name, &zwp_text_input_manager_v3_interface, required);
tll_foreach(wayl->seats, it)
seat_add_text_input(&it->item);
}
#endif
}
static void
monitor_destroy(struct monitor *mon)
{
if (mon->xdg != NULL)
zxdg_output_v1_destroy(mon->xdg);
if (mon->output != NULL) {
if (mon->use_output_release)
wl_output_release(mon->output);
else
wl_output_destroy(mon->output);
}
free(mon->make);
free(mon->model);
free(mon->name);
free(mon->description);
}
static void
handle_global_remove(void *data, struct wl_registry *registry, uint32_t name)
{
LOG_DBG("global removed: 0x%08x", name);
struct wayland *wayl = data;
/* Check if this is an output */
tll_foreach(wayl->monitors, it) {
struct monitor *mon = &it->item;
if (mon->wl_name != name)
continue;
LOG_INFO("monitor unplugged or disabled: %s", mon->name);
/*
* Update all terminals that are mapped here. On Sway 1.4,
* surfaces are *not* unmapped before the output is removed
*/
tll_foreach(wayl->terms, t) {
tll_foreach(t->item->window->on_outputs, o) {
if (o->item->output == mon->output) {
surface_leave(t->item->window, NULL, mon->output);
break;
}
}
}
monitor_destroy(mon);
tll_remove(wayl->monitors, it);
return;
}
/* A seat? */
tll_foreach(wayl->seats, it) {
struct seat *seat = &it->item;
if (seat->wl_name != name)
continue;
LOG_INFO("seat destroyed: %s", seat->name);
if (seat->kbd_focus != NULL) {
LOG_WARN("compositor destroyed seat '%s' "
"without sending a keyboard leave event",
seat->name);
if (seat->wl_keyboard != NULL)
keyboard_listener.leave(
seat, seat->wl_keyboard, -1, seat->kbd_focus->window->surface.surf);
}
if (seat->mouse_focus != NULL) {
LOG_WARN("compositor destroyed seat '%s' "
"without sending a pointer leave event",
seat->name);
if (seat->wl_pointer != NULL)
pointer_listener.leave(
seat, seat->wl_pointer, -1, seat->mouse_focus->window->surface.surf);
}
seat_destroy(seat);
tll_remove(wayl->seats, it);
return;
}
LOG_WARN("unknown global removed: 0x%08x", name);
}
static const struct wl_registry_listener registry_listener = {
.global = &handle_global,
.global_remove = &handle_global_remove,
};
static void
fdm_hook(struct fdm *fdm, void *data)
{
struct wayland *wayl = data;
wayl_flush(wayl);
}
static bool
fdm_wayl(struct fdm *fdm, int fd, int events, void *data)
{
struct wayland *wayl = data;
int event_count = 0;
if (events & EPOLLIN) {
if (wl_display_read_events(wayl->display) < 0) {
LOG_ERRNO("failed to read events from the Wayland socket");
return false;
}
while (wl_display_prepare_read(wayl->display) != 0) {
if (wl_display_dispatch_pending(wayl->display) < 0) {
LOG_ERRNO("failed to dispatch pending Wayland events");
return false;
}
}
}
if (events & EPOLLHUP) {
LOG_WARN("disconnected from Wayland");
/*
* Do *not* call wl_display_cancel_read() here.
*
* Doing so causes later calls to wayl_roundtrip() (called
* from term_destroy() -> wayl_win_destroy()) to hang
* indefinitely.
*
* https://codeberg.org/dnkl/foot/issues/651
*/
return false;
}
return event_count != -1;
}
struct wayland *
wayl_init(struct fdm *fdm, struct key_binding_manager *key_binding_manager,
bool presentation_timings)
{
struct wayland *wayl = calloc(1, sizeof(*wayl));
if (unlikely(wayl == NULL)) {
LOG_ERRNO("calloc() failed");
return NULL;
}
wayl->fdm = fdm;
wayl->key_binding_manager = key_binding_manager;
wayl->fd = -1;
wayl->presentation_timings = presentation_timings;
if (!fdm_hook_add(fdm, &fdm_hook, wayl, FDM_HOOK_PRIORITY_LOW)) {
LOG_ERR("failed to add FDM hook");
goto out;
}
wayl->display = wl_display_connect(NULL);
if (wayl->display == NULL) {
LOG_ERR("failed to connect to wayland; no compositor running?");
goto out;
}
wayl->registry = wl_display_get_registry(wayl->display);
if (wayl->registry == NULL) {
LOG_ERR("failed to get wayland registry");
goto out;
}
wl_registry_add_listener(wayl->registry, &registry_listener, wayl);
wl_display_roundtrip(wayl->display);
if (wayl->compositor == NULL) {
LOG_ERR("no compositor");
goto out;
}
if (wayl->sub_compositor == NULL) {
LOG_ERR("no sub compositor");
goto out;
}
if (wayl->shm == NULL) {
LOG_ERR("no shared memory buffers interface");
goto out;
}
if (wayl->shell == NULL) {
LOG_ERR("no XDG shell interface");
goto out;
}
if (wayl->data_device_manager == NULL) {
LOG_ERR("no clipboard available "
"(wl_data_device_manager not implemented by server)");
goto out;
}
if (tll_length(wayl->seats) == 0) {
LOG_ERR("no seats available (wl_seat interface too old?)");
goto out;
}
if (tll_length(wayl->monitors) == 0) {
LOG_ERR("no monitors available");
goto out;
}
if (wayl->primary_selection_device_manager == NULL)
LOG_WARN("no primary selection available");
#if defined(HAVE_XDG_ACTIVATION)
if (wayl->xdg_activation == NULL) {
#else
if (true) {
#endif
LOG_WARN(
"no XDG activation support; "
"bell.urgent will fall back to coloring the window margins red");
}
#if defined(HAVE_FRACTIONAL_SCALE)
if (wayl->fractional_scale_manager == NULL || wayl->viewporter == NULL) {
#else
if (true) {
#endif
LOG_WARN("fractional scaling not available");
}
#if defined(HAVE_CURSOR_SHAPE)
if (wayl->cursor_shape_manager == NULL) {
#else
if (true) {
#endif
LOG_WARN("no server-side cursors available, "
"falling back to client-side cursors");
}
if (presentation_timings && wayl->presentation == NULL) {
LOG_ERR("presentation time interface not implemented by compositor");
goto out;
}
#if defined(FOOT_IME_ENABLED) && FOOT_IME_ENABLED
if (wayl->text_input_manager == NULL) {
LOG_WARN("text input interface not implemented by compositor; "
"IME will be disabled");
}
#endif
/* Trigger listeners registered when handling globals */
wl_display_roundtrip(wayl->display);
if (!wayl->have_argb8888) {
LOG_ERR("compositor does not support ARGB surfaces");
goto out;
}
tll_foreach(wayl->monitors, it) {
LOG_INFO(
"%s: %dx%d+%dx%d@%dHz %s %.2f\" scale=%d, DPI=%.2f/%.2f (physical/scaled)",
it->item.name, it->item.dim.px_real.width, it->item.dim.px_real.height,
it->item.x, it->item.y, (int)roundf(it->item.refresh),
it->item.model != NULL ? it->item.model : it->item.description,
it->item.inch, it->item.scale,
it->item.dpi.physical, it->item.dpi.scaled);
}
wayl->fd = wl_display_get_fd(wayl->display);
if (fcntl(wayl->fd, F_SETFL, fcntl(wayl->fd, F_GETFL) | O_NONBLOCK) < 0) {
LOG_ERRNO("failed to make Wayland socket non-blocking");
goto out;
}
if (!fdm_add(fdm, wayl->fd, EPOLLIN, &fdm_wayl, wayl))
goto out;
if (wl_display_prepare_read(wayl->display) != 0) {
LOG_ERRNO("failed to prepare for reading wayland events");
goto out;
}
return wayl;
out:
if (wayl != NULL)
wayl_destroy(wayl);
return NULL;
}
void
wayl_destroy(struct wayland *wayl)
{
if (wayl == NULL)
return;
tll_foreach(wayl->terms, it) {
static bool have_warned = false;
if (!have_warned) {
have_warned = true;
LOG_WARN("there are terminals still running");
term_destroy(it->item);
}
}
tll_free(wayl->terms);
fdm_hook_del(wayl->fdm, &fdm_hook, FDM_HOOK_PRIORITY_LOW);
tll_foreach(wayl->monitors, it) {
monitor_destroy(&it->item);
tll_remove(wayl->monitors, it);
}
tll_foreach(wayl->seats, it) {
seat_destroy(&it->item);
tll_remove(wayl->seats, it);
}
#if defined(FOOT_IME_ENABLED) && FOOT_IME_ENABLED
if (wayl->text_input_manager != NULL)
zwp_text_input_manager_v3_destroy(wayl->text_input_manager);
#endif
#if defined(HAVE_FRACTIONAL_SCALE)
if (wayl->fractional_scale_manager != NULL)
wp_fractional_scale_manager_v1_destroy(wayl->fractional_scale_manager);
if (wayl->viewporter != NULL)
wp_viewporter_destroy(wayl->viewporter);
#endif
#if defined(HAVE_CURSOR_SHAPE)
if (wayl->cursor_shape_manager != NULL)
wp_cursor_shape_manager_v1_destroy(wayl->cursor_shape_manager);
#endif
#if defined(HAVE_XDG_ACTIVATION)
if (wayl->xdg_activation != NULL)
xdg_activation_v1_destroy(wayl->xdg_activation);
#endif
if (wayl->xdg_output_manager != NULL)
zxdg_output_manager_v1_destroy(wayl->xdg_output_manager);
if (wayl->shell != NULL)
xdg_wm_base_destroy(wayl->shell);
if (wayl->xdg_decoration_manager != NULL)
zxdg_decoration_manager_v1_destroy(wayl->xdg_decoration_manager);
if (wayl->presentation != NULL)
wp_presentation_destroy(wayl->presentation);
if (wayl->data_device_manager != NULL)
wl_data_device_manager_destroy(wayl->data_device_manager);
if (wayl->primary_selection_device_manager != NULL)
zwp_primary_selection_device_manager_v1_destroy(wayl->primary_selection_device_manager);
if (wayl->shm != NULL)
wl_shm_destroy(wayl->shm);
if (wayl->sub_compositor != NULL)
wl_subcompositor_destroy(wayl->sub_compositor);
if (wayl->compositor != NULL)
wl_compositor_destroy(wayl->compositor);
if (wayl->registry != NULL)
wl_registry_destroy(wayl->registry);
if (wayl->fd != -1)
fdm_del_no_close(wayl->fdm, wayl->fd);
if (wayl->display != NULL) {
wayl_flush(wayl);
wl_display_disconnect(wayl->display);
}
free(wayl);
}
#if defined(HAVE_FRACTIONAL_SCALE)
static void fractional_scale_preferred_scale(
void *data, struct wp_fractional_scale_v1 *wp_fractional_scale_v1,
uint32_t scale)
{
struct wl_window *win = data;
const float new_scale = (float)scale / 120.;
if (win->scale == new_scale)
return;
LOG_DBG("fractional scale: %.2f -> %.2f", win->scale, new_scale);
win->scale = new_scale;
update_term_for_output_change(win->term);
}
static const struct wp_fractional_scale_v1_listener fractional_scale_listener = {
.preferred_scale = &fractional_scale_preferred_scale,
};
#endif
struct wl_window *
wayl_win_init(struct terminal *term, const char *token)
{
struct wayland *wayl = term->wl;
const struct config *conf = term->conf;
struct wl_window *win = calloc(1, sizeof(*win));
if (unlikely(win == NULL)) {
LOG_ERRNO("calloc() failed");
return NULL;
}
win->term = term;
win->csd_mode = CSD_UNKNOWN;
win->csd.move_timeout_fd = -1;
win->resize_timeout_fd = -1;
win->scale = -1.;
win->wm_capabilities.maximize = true;
win->wm_capabilities.minimize = true;
win->surface.surf = wl_compositor_create_surface(wayl->compositor);
if (win->surface.surf == NULL) {
LOG_ERR("failed to create wayland surface");
goto out;
}
wayl_win_alpha_changed(win);
wl_surface_add_listener(win->surface.surf, &surface_listener, win);
#if defined(HAVE_FRACTIONAL_SCALE)
if (wayl->fractional_scale_manager != NULL && wayl->viewporter != NULL) {
win->surface.viewport = wp_viewporter_get_viewport(wayl->viewporter, win->surface.surf);
win->fractional_scale =
wp_fractional_scale_manager_v1_get_fractional_scale(
wayl->fractional_scale_manager, win->surface.surf);
wp_fractional_scale_v1_add_listener(
win->fractional_scale, &fractional_scale_listener, win);
}
#endif
win->xdg_surface = xdg_wm_base_get_xdg_surface(wayl->shell, win->surface.surf);
xdg_surface_add_listener(win->xdg_surface, &xdg_surface_listener, win);
win->xdg_toplevel = xdg_surface_get_toplevel(win->xdg_surface);
xdg_toplevel_add_listener(win->xdg_toplevel, &xdg_toplevel_listener, win);
xdg_toplevel_set_app_id(win->xdg_toplevel, conf->app_id);
if (conf->csd.preferred == CONF_CSD_PREFER_NONE) {
/* User specifically do *not* want decorations */
win->csd_mode = CSD_NO;
LOG_INFO("window decorations disabled by user");
} else if (wayl->xdg_decoration_manager != NULL) {
win->xdg_toplevel_decoration = zxdg_decoration_manager_v1_get_toplevel_decoration(
wayl->xdg_decoration_manager, win->xdg_toplevel);
LOG_INFO("requesting %s decorations",
conf->csd.preferred == CONF_CSD_PREFER_SERVER ? "SSD" : "CSD");
zxdg_toplevel_decoration_v1_set_mode(
win->xdg_toplevel_decoration,
(conf->csd.preferred == CONF_CSD_PREFER_SERVER
? ZXDG_TOPLEVEL_DECORATION_V1_MODE_SERVER_SIDE
: ZXDG_TOPLEVEL_DECORATION_V1_MODE_CLIENT_SIDE));
zxdg_toplevel_decoration_v1_add_listener(
win->xdg_toplevel_decoration, &xdg_toplevel_decoration_listener, win);
} else {
/* No decoration manager - thus we *must* draw our own decorations */
win->configure.csd_mode = CSD_YES;
LOG_WARN("no decoration manager available - using CSDs unconditionally");
}
wl_surface_commit(win->surface.surf);
#if defined(HAVE_XDG_ACTIVATION)
/* Complete XDG startup notification */
if (token)
xdg_activation_v1_activate(wayl->xdg_activation, token, win->surface.surf);
#endif
if (!wayl_win_subsurface_new(win, &win->overlay, false)) {
LOG_ERR("failed to create overlay surface");
goto out;
}
switch (conf->tweak.render_timer) {
case RENDER_TIMER_OSD:
case RENDER_TIMER_BOTH:
if (!wayl_win_subsurface_new(win, &win->render_timer, false)) {
LOG_ERR("failed to create render timer surface");
goto out;
}
break;
case RENDER_TIMER_NONE:
case RENDER_TIMER_LOG:
break;
}
return win;
out:
if (win != NULL)
wayl_win_destroy(win);
return NULL;
}
void
wayl_win_destroy(struct wl_window *win)
{
if (win == NULL)
return;
struct terminal *term = win->term;
if (win->csd.move_timeout_fd != -1)
close(win->csd.move_timeout_fd);
/*
* First, unmap all surfaces to trigger things like
* keyboard_leave() and wl_pointer_leave().
*
* This ensures we remove all references to *this* window from the
* global wayland struct (since it no longer has neither keyboard
* nor mouse focus).
*/
if (win->render_timer.surface.surf != NULL) {
wl_surface_attach(win->render_timer.surface.surf, NULL, 0, 0);
wl_surface_commit(win->render_timer.surface.surf);
}
if (win->scrollback_indicator.surface.surf != NULL) {
wl_surface_attach(win->scrollback_indicator.surface.surf, NULL, 0, 0);
wl_surface_commit(win->scrollback_indicator.surface.surf);
}
/* Scrollback search */
if (win->search.surface.surf != NULL) {
wl_surface_attach(win->search.surface.surf, NULL, 0, 0);
wl_surface_commit(win->search.surface.surf);
}
/* URLs */
tll_foreach(win->urls, it) {
wl_surface_attach(it->item.surf.surface.surf, NULL, 0, 0);
wl_surface_commit(it->item.surf.surface.surf);
}
/* CSD */
for (size_t i = 0; i < ALEN(win->csd.surface); i++) {
if (win->csd.surface[i].surface.surf != NULL) {
wl_surface_attach(win->csd.surface[i].surface.surf, NULL, 0, 0);
wl_surface_commit(win->csd.surface[i].surface.surf);
}
}
wayl_roundtrip(win->term->wl);
/* Main window */
win->unmapped = true;
wl_surface_attach(win->surface.surf, NULL, 0, 0);
wl_surface_commit(win->surface.surf);
wayl_roundtrip(win->term->wl);
tll_free(win->on_outputs);
tll_foreach(win->urls, it) {
wayl_win_subsurface_destroy(&it->item.surf);
tll_remove(win->urls, it);
}
csd_destroy(win);
wayl_win_subsurface_destroy(&win->search);
wayl_win_subsurface_destroy(&win->scrollback_indicator);
wayl_win_subsurface_destroy(&win->render_timer);
wayl_win_subsurface_destroy(&win->overlay);
shm_purge(term->render.chains.search);
shm_purge(term->render.chains.scrollback_indicator);
shm_purge(term->render.chains.render_timer);
shm_purge(term->render.chains.grid);
shm_purge(term->render.chains.url);
shm_purge(term->render.chains.csd);
#if defined(HAVE_XDG_ACTIVATION)
tll_foreach(win->xdg_tokens, it) {
xdg_activation_token_v1_destroy(it->item->xdg_token);
free(it->item);
tll_remove(win->xdg_tokens, it);
}
#endif
#if defined(HAVE_FRACTIONAL_SCALE)
if (win->fractional_scale != NULL)
wp_fractional_scale_v1_destroy(win->fractional_scale);
if (win->surface.viewport != NULL)
wp_viewport_destroy(win->surface.viewport);
#endif
if (win->frame_callback != NULL)
wl_callback_destroy(win->frame_callback);
if (win->xdg_toplevel_decoration != NULL)
zxdg_toplevel_decoration_v1_destroy(win->xdg_toplevel_decoration);
if (win->xdg_toplevel != NULL)
xdg_toplevel_destroy(win->xdg_toplevel);
if (win->xdg_surface != NULL)
xdg_surface_destroy(win->xdg_surface);
if (win->surface.surf != NULL)
wl_surface_destroy(win->surface.surf);
wayl_roundtrip(win->term->wl);
if (win->resize_timeout_fd >= 0)
fdm_del(win->term->wl->fdm, win->resize_timeout_fd);
free(win);
}
bool
wayl_reload_xcursor_theme(struct seat *seat, float new_scale)
{
if (seat->pointer.theme != NULL && seat->pointer.scale == new_scale) {
/* We already have a theme loaded, and the scale hasn't changed */
return true;
}
if (seat->pointer.theme != NULL) {
xassert(seat->pointer.scale != new_scale);
wl_cursor_theme_destroy(seat->pointer.theme);
seat->pointer.theme = NULL;
seat->pointer.cursor = NULL;
}
int xcursor_size = 24;
{
const char *env_cursor_size = getenv("XCURSOR_SIZE");
if (env_cursor_size != NULL) {
errno = 0;
char *end;
int size = (int)strtol(env_cursor_size, &end, 10);
if (errno == 0 && *end == '\0' && size > 0)
xcursor_size = size;
else
LOG_WARN("XCURSOR_SIZE '%s' is invalid, defaulting to 24",
env_cursor_size);
}
}
const char *xcursor_theme = getenv("XCURSOR_THEME");
LOG_INFO("cursor theme: %s, size: %d, scale: %.2f",
xcursor_theme ? xcursor_theme : "(null)",
xcursor_size, new_scale);
seat->pointer.theme = wl_cursor_theme_load(
xcursor_theme, xcursor_size * new_scale, seat->wayl->shm);
if (seat->pointer.theme == NULL) {
LOG_ERR("failed to load cursor theme");
return false;
}
seat->pointer.scale = new_scale;
return true;
}
void
wayl_flush(struct wayland *wayl)
{
while (true) {
int r = wl_display_flush(wayl->display);
if (r >= 0) {
/* Most likely code path - the flush succeed */
return;
}
if (errno == EINTR) {
/* Unlikely */
continue;
}
if (errno != EAGAIN) {
LOG_ERRNO("failed to flush wayland socket");
return;
}
/* Socket buffer is full - need to wait for it to become
writeable again */
xassert(errno == EAGAIN);
while (true) {
struct pollfd fds[] = {{.fd = wayl->fd, .events = POLLOUT}};
r = poll(fds, sizeof(fds) / sizeof(fds[0]), -1);
if (r < 0) {
if (errno == EINTR)
continue;
LOG_ERRNO("failed to poll");
return;
}
if (fds[0].revents & POLLHUP)
return;
xassert(fds[0].revents & POLLOUT);
break;
}
}
}
void
wayl_roundtrip(struct wayland *wayl)
{
wl_display_cancel_read(wayl->display);
if (wl_display_roundtrip(wayl->display) < 0) {
LOG_ERRNO("failed to roundtrip Wayland display");
return;
}
/* I suspect the roundtrip above clears the pending queue, and
* that prepare_read() will always succeed in the first call. But,
* better safe than sorry... */
while (wl_display_prepare_read(wayl->display) != 0) {
if (wl_display_dispatch_pending(wayl->display) < 0) {
LOG_ERRNO("failed to dispatch pending Wayland events");
return;
}
}
wayl_flush(wayl);
}
void
wayl_surface_scale_explicit_width_height(
const struct wl_window *win, const struct wayl_surface *surf,
int width, int height, float scale)
{
if (term_fractional_scaling(win->term)) {
#if defined(HAVE_FRACTIONAL_SCALE)
LOG_DBG("scaling by a factor of %.2f using fractional scaling "
"(width=%d, height=%d) ", scale, width, height);
xassert((int)roundf(scale * (int)roundf(width / scale)) == width);
xassert((int)roundf(scale * (int)roundf(height / scale)) == height);
wl_surface_set_buffer_scale(surf->surf, 1);
wp_viewport_set_destination(
surf->viewport, roundf(width / scale), roundf(height / scale));
#else
BUG("wayl_fraction_scaling() returned true, "
"but fractional scaling was not available at compile time");
#endif
} else {
LOG_DBG("scaling by a factor of %.2f using legacy mode "
"(width=%d, height=%d)", scale, width, height);
xassert(scale == floorf(scale));
const int iscale = (int)floorf(scale);
xassert(width % iscale == 0);
xassert(height % iscale == 0);
wl_surface_set_buffer_scale(surf->surf, iscale);
}
}
void
wayl_surface_scale(const struct wl_window *win, const struct wayl_surface *surf,
const struct buffer *buf, float scale)
{
wayl_surface_scale_explicit_width_height(
win, surf, buf->width, buf->height, scale);
}
void
wayl_win_scale(struct wl_window *win, const struct buffer *buf)
{
const struct terminal *term = win->term;
const float scale = term->scale;
wayl_surface_scale(win, &win->surface, buf, scale);
}
void
wayl_win_alpha_changed(struct wl_window *win)
{
struct terminal *term = win->term;
if (term->colors.alpha == 0xffff) {
struct wl_region *region = wl_compositor_create_region(
term->wl->compositor);
if (region != NULL) {
wl_region_add(region, 0, 0, INT32_MAX, INT32_MAX);
wl_surface_set_opaque_region(win->surface.surf, region);
wl_region_destroy(region);
}
} else
wl_surface_set_opaque_region(win->surface.surf, NULL);
}
#if defined(HAVE_XDG_ACTIVATION)
static void
activation_token_for_urgency_done(const char *token, void *data)
{
struct wl_window *win = data;
struct wayland *wayl = win->term->wl;
win->urgency_token_is_pending = false;
xdg_activation_v1_activate(wayl->xdg_activation, token, win->surface.surf);
}
#endif /* HAVE_XDG_ACTIVATION */
bool
wayl_win_set_urgent(struct wl_window *win)
{
#if defined(HAVE_XDG_ACTIVATION)
if (win->urgency_token_is_pending) {
/* We already have a pending token. Don’t request another one,
* to avoid flooding the Wayland socket */
return true;
}
bool success = wayl_get_activation_token(
win->term->wl, NULL, 0, win, &activation_token_for_urgency_done, win);
if (success) {
win->urgency_token_is_pending = true;
return true;
}
#endif
return false;
}
bool
wayl_win_csd_titlebar_visible(const struct wl_window *win)
{
return win->csd_mode == CSD_YES &&
!win->is_fullscreen &&
!(win->is_maximized && win->term->conf->csd.hide_when_maximized);
}
bool
wayl_win_csd_borders_visible(const struct wl_window *win)
{
return win->csd_mode == CSD_YES &&
!win->is_fullscreen &&
!win->is_maximized;
}
bool
wayl_win_subsurface_new_with_custom_parent(
struct wl_window *win, struct wl_surface *parent,
struct wayl_sub_surface *surf, bool allow_pointer_input)
{
struct wayland *wayl = win->term->wl;
surf->surface.surf = NULL;
surf->sub = NULL;
struct wl_surface *main_surface
= wl_compositor_create_surface(wayl->compositor);
if (main_surface == NULL) {
LOG_ERR("failed to instantiate surface for sub-surface");
return false;
}
struct wl_subsurface *sub = wl_subcompositor_get_subsurface(
wayl->sub_compositor, main_surface, parent);
if (sub == NULL) {
LOG_ERR("failed to instantiate sub-surface");
wl_surface_destroy(main_surface);
return false;
}
#if defined(HAVE_FRACTIONAL_SCALE)
struct wp_viewport *viewport = NULL;
if (wayl->fractional_scale_manager != NULL && wayl->viewporter != NULL) {
viewport = wp_viewporter_get_viewport(wayl->viewporter, main_surface);
if (viewport == NULL) {
LOG_ERR("failed to instantiate viewport for sub-surface");
wl_subsurface_destroy(sub);
wl_surface_destroy(main_surface);
return false;
}
}
#endif
wl_surface_set_user_data(main_surface, win);
wl_subsurface_set_sync(sub);
/* Disable pointer and touch events */
if (!allow_pointer_input) {
struct wl_region *empty =
wl_compositor_create_region(wayl->compositor);
wl_surface_set_input_region(main_surface, empty);
wl_region_destroy(empty);
}
surf->surface.surf = main_surface;
surf->sub = sub;
#if defined(HAVE_FRACTIONAL_SCALE)
surf->surface.viewport = viewport;
#endif
return true;
}
bool
wayl_win_subsurface_new(struct wl_window *win, struct wayl_sub_surface *surf,
bool allow_pointer_input)
{
return wayl_win_subsurface_new_with_custom_parent(
win, win->surface.surf, surf, allow_pointer_input);
}
void
wayl_win_subsurface_destroy(struct wayl_sub_surface *surf)
{
if (surf == NULL)
return;
#if defined(HAVE_FRACTIONAL_SCALE)
if (surf->surface.viewport != NULL) {
wp_viewport_destroy(surf->surface.viewport);
surf->surface.viewport = NULL;
}
#endif
if (surf->sub != NULL) {
wl_subsurface_destroy(surf->sub);
surf->sub = NULL;
}
if (surf->surface.surf != NULL) {
wl_surface_destroy(surf->surface.surf);
surf->surface.surf = NULL;
}
}
#if defined(HAVE_XDG_ACTIVATION)
static void
activation_token_done(void *data, struct xdg_activation_token_v1 *xdg_token,
const char *token)
{
LOG_DBG("XDG activation token done: %s", token);
struct xdg_activation_token_context *ctx = data;
struct wl_window *win = ctx->win;
ctx->cb(token, ctx->cb_data);
tll_foreach(win->xdg_tokens, it) {
if (it->item->xdg_token != xdg_token)
continue;
xassert(win == it->item->win);
free(ctx);
xdg_activation_token_v1_destroy(xdg_token);
tll_remove(win->xdg_tokens, it);
return;
}
BUG("activation token not found in list");
}
static const struct
xdg_activation_token_v1_listener activation_token_listener = {
.done = &activation_token_done,
};
bool
wayl_get_activation_token(
struct wayland *wayl, struct seat *seat, uint32_t serial,
struct wl_window *win,
void (*cb)(const char *token, void *data), void *cb_data)
{
if (wayl->xdg_activation == NULL)
return false;
struct xdg_activation_token_v1 *token =
xdg_activation_v1_get_activation_token(wayl->xdg_activation);
if (token == NULL) {
LOG_ERR("failed to retrieve XDG activation token");
return false;
}
struct xdg_activation_token_context *ctx = xmalloc(sizeof(*ctx));
*ctx = (struct xdg_activation_token_context){
.win = win,
.xdg_token = token,
.cb = cb,
.cb_data = cb_data,
};
tll_push_back(win->xdg_tokens, ctx);
if (seat != NULL && serial != 0)
xdg_activation_token_v1_set_serial(token, serial, seat->wl_seat);
xdg_activation_token_v1_set_surface(token, win->surface.surf);
xdg_activation_token_v1_add_listener(token, &activation_token_listener, ctx);
xdg_activation_token_v1_commit(token);
return true;
}
#endif
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