This is a fork of https://github.com/swaywm/sway that replaces pango with https://codeberg.org/dnkl/fcft for font rendering. Note: do not use the master branch; use one of the fontconfig branches
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#define _POSIX_C_SOURCE 200809L
#include <stdlib.h>
#include <assert.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <unistd.h>
#include <wayland-client.h>
#include <wayland-cursor.h>
#include "log.h"
#include "list.h"
#include "swaynag/render.h"
#include "swaynag/swaynag.h"
#include "swaynag/types.h"
#include "wlr-layer-shell-unstable-v1-client-protocol.h"
static void nop() {
// Intentionally left blank
}
static bool terminal_execute(char *terminal, char *command) {
char fname[] = "/tmp/swaynagXXXXXX";
FILE *tmp= fdopen(mkstemp(fname), "w");
if (!tmp) {
sway_log(SWAY_ERROR, "Failed to create temp script");
return false;
}
sway_log(SWAY_DEBUG, "Created temp script: %s", fname);
fprintf(tmp, "#!/bin/sh\nrm %s\n%s", fname, command);
fclose(tmp);
chmod(fname, S_IRUSR | S_IWUSR | S_IXUSR);
char *cmd = malloc(sizeof(char) * (strlen(terminal) + strlen(" -e ") + strlen(fname) + 1));
sprintf(cmd, "%s -e %s", terminal, fname);
execlp("sh", "sh", "-c", cmd, NULL);
sway_log_errno(SWAY_ERROR, "Failed to run command, execlp() returned.");
free(cmd);
return false;
}
static void swaynag_button_execute(struct swaynag *swaynag,
struct swaynag_button *button) {
sway_log(SWAY_DEBUG, "Executing [%s]: %s", button->text, button->action);
if (button->type == SWAYNAG_ACTION_DISMISS) {
swaynag->run_display = false;
} else if (button->type == SWAYNAG_ACTION_EXPAND) {
swaynag->details.visible = !swaynag->details.visible;
render_frame(swaynag);
} else {
pid_t pid = fork();
if (pid < 0) {
sway_log_errno(SWAY_DEBUG, "Failed to fork");
return;
} else if (pid == 0) {
// Child process. Will be used to prevent zombie processes
pid = fork();
if (pid < 0) {
sway_log_errno(SWAY_DEBUG, "Failed to fork");
return;
} else if (pid == 0) {
// Child of the child. Will be reparented to the init process
char *terminal = getenv("TERMINAL");
if (button->terminal && terminal && strlen(terminal)) {
sway_log(SWAY_DEBUG, "Found $TERMINAL: %s", terminal);
if (!terminal_execute(terminal, button->action)) {
swaynag_destroy(swaynag);
_exit(EXIT_FAILURE);
}
} else {
if (button->terminal) {
sway_log(SWAY_DEBUG,
"$TERMINAL not found. Running directly");
}
execlp("sh", "sh", "-c", button->action, NULL);
sway_log_errno(SWAY_DEBUG, "execlp failed");
_exit(EXIT_FAILURE);
}
}
_exit(EXIT_SUCCESS);
}
if (button->dismiss) {
swaynag->run_display = false;
}
if (waitpid(pid, NULL, 0) < 0) {
sway_log_errno(SWAY_DEBUG, "waitpid failed");
}
}
}
static void layer_surface_configure(void *data,
struct zwlr_layer_surface_v1 *surface,
uint32_t serial, uint32_t width, uint32_t height) {
struct swaynag *swaynag = data;
swaynag->width = width;
swaynag->height = height;
zwlr_layer_surface_v1_ack_configure(surface, serial);
render_frame(swaynag);
}
static void layer_surface_closed(void *data,
struct zwlr_layer_surface_v1 *surface) {
struct swaynag *swaynag = data;
swaynag_destroy(swaynag);
}
static const struct zwlr_layer_surface_v1_listener layer_surface_listener = {
.configure = layer_surface_configure,
.closed = layer_surface_closed,
};
static void surface_enter(void *data, struct wl_surface *surface,
struct wl_output *output) {
struct swaynag *swaynag = data;
struct swaynag_output *swaynag_output;
wl_list_for_each(swaynag_output, &swaynag->outputs, link) {
if (swaynag_output->wl_output == output) {
sway_log(SWAY_DEBUG, "Surface enter on output %s",
swaynag_output->name);
swaynag->output = swaynag_output;
swaynag->scale = swaynag->output->scale;
render_frame(swaynag);
break;
}
};
}
static const struct wl_surface_listener surface_listener = {
.enter = surface_enter,
.leave = nop,
};
static void update_cursor(struct swaynag_seat *seat) {
struct swaynag_pointer *pointer = &seat->pointer;
struct swaynag *swaynag = seat->swaynag;
if (pointer->cursor_theme) {
wl_cursor_theme_destroy(pointer->cursor_theme);
}
const char *cursor_theme = getenv("XCURSOR_THEME");
unsigned cursor_size = 24;
const char *env_cursor_size = getenv("XCURSOR_SIZE");
if (env_cursor_size && strlen(env_cursor_size) > 0) {
errno = 0;
char *end;
unsigned size = strtoul(env_cursor_size, &end, 10);
if (!*end && errno == 0) {
cursor_size = size;
}
}
pointer->cursor_theme = wl_cursor_theme_load(
cursor_theme, cursor_size * swaynag->scale, swaynag->shm);
struct wl_cursor *cursor =
wl_cursor_theme_get_cursor(pointer->cursor_theme, "left_ptr");
pointer->cursor_image = cursor->images[0];
wl_surface_set_buffer_scale(pointer->cursor_surface,
swaynag->scale);
wl_surface_attach(pointer->cursor_surface,
wl_cursor_image_get_buffer(pointer->cursor_image), 0, 0);
wl_pointer_set_cursor(pointer->pointer, pointer->serial,
pointer->cursor_surface,
pointer->cursor_image->hotspot_x / swaynag->scale,
pointer->cursor_image->hotspot_y / swaynag->scale);
wl_surface_damage_buffer(pointer->cursor_surface, 0, 0,
INT32_MAX, INT32_MAX);
wl_surface_commit(pointer->cursor_surface);
}
void update_all_cursors(struct swaynag *swaynag) {
struct swaynag_seat *seat;
wl_list_for_each(seat, &swaynag->seats, link) {
if (seat->pointer.pointer) {
update_cursor(seat);
}
}
}
static void wl_pointer_enter(void *data, struct wl_pointer *wl_pointer,
uint32_t serial, struct wl_surface *surface,
wl_fixed_t surface_x, wl_fixed_t surface_y) {
struct swaynag_seat *seat = data;
struct swaynag_pointer *pointer = &seat->pointer;
pointer->x = wl_fixed_to_int(surface_x);
pointer->y = wl_fixed_to_int(surface_y);
pointer->serial = serial;
update_cursor(seat);
}
static void wl_pointer_motion(void *data, struct wl_pointer *wl_pointer,
uint32_t time, wl_fixed_t surface_x, wl_fixed_t surface_y) {
struct swaynag_seat *seat = data;
seat->pointer.x = wl_fixed_to_int(surface_x);
seat->pointer.y = wl_fixed_to_int(surface_y);
}
static void wl_pointer_button(void *data, struct wl_pointer *wl_pointer,
uint32_t serial, uint32_t time, uint32_t button, uint32_t state) {
struct swaynag_seat *seat = data;
struct swaynag *swaynag = seat->swaynag;
if (state != WL_POINTER_BUTTON_STATE_PRESSED) {
return;
}
double x = seat->pointer.x * swaynag->scale;
double y = seat->pointer.y * swaynag->scale;
for (int i = 0; i < swaynag->buttons->length; i++) {
struct swaynag_button *nagbutton = swaynag->buttons->items[i];
if (x >= nagbutton->x
&& y >= nagbutton->y
&& x < nagbutton->x + nagbutton->width
&& y < nagbutton->y + nagbutton->height) {
swaynag_button_execute(swaynag, nagbutton);
return;
}
}
if (swaynag->details.visible &&
swaynag->details.total_lines != swaynag->details.visible_lines) {
struct swaynag_button button_up = swaynag->details.button_up;
if (x >= button_up.x
&& y >= button_up.y
&& x < button_up.x + button_up.width
&& y < button_up.y + button_up.height
&& swaynag->details.offset > 0) {
swaynag->details.offset--;
render_frame(swaynag);
return;
}
struct swaynag_button button_down = swaynag->details.button_down;
int bot = swaynag->details.total_lines;
bot -= swaynag->details.visible_lines;
if (x >= button_down.x
&& y >= button_down.y
&& x < button_down.x + button_down.width
&& y < button_down.y + button_down.height
&& swaynag->details.offset < bot) {
swaynag->details.offset++;
render_frame(swaynag);
return;
}
}
}
static void wl_pointer_axis(void *data, struct wl_pointer *wl_pointer,
uint32_t time, uint32_t axis, wl_fixed_t value) {
struct swaynag_seat *seat = data;
struct swaynag *swaynag = seat->swaynag;
if (!swaynag->details.visible
|| seat->pointer.x < swaynag->details.x
|| seat->pointer.y < swaynag->details.y
|| seat->pointer.x >= swaynag->details.x + swaynag->details.width
|| seat->pointer.y >= swaynag->details.y + swaynag->details.height
|| swaynag->details.total_lines == swaynag->details.visible_lines) {
return;
}
int direction = wl_fixed_to_int(value);
int bot = swaynag->details.total_lines - swaynag->details.visible_lines;
if (direction < 0 && swaynag->details.offset > 0) {
swaynag->details.offset--;
} else if (direction > 0 && swaynag->details.offset < bot) {
swaynag->details.offset++;
}
render_frame(swaynag);
}
static const struct wl_pointer_listener pointer_listener = {
.enter = wl_pointer_enter,
.leave = nop,
.motion = wl_pointer_motion,
.button = wl_pointer_button,
.axis = wl_pointer_axis,
.frame = nop,
.axis_source = nop,
.axis_stop = nop,
.axis_discrete = nop,
};
static void seat_handle_capabilities(void *data, struct wl_seat *wl_seat,
enum wl_seat_capability caps) {
struct swaynag_seat *seat = data;
bool cap_pointer = caps & WL_SEAT_CAPABILITY_POINTER;
if (cap_pointer && !seat->pointer.pointer) {
seat->pointer.pointer = wl_seat_get_pointer(wl_seat);
wl_pointer_add_listener(seat->pointer.pointer,
&pointer_listener, seat);
} else if (!cap_pointer && seat->pointer.pointer) {
wl_pointer_destroy(seat->pointer.pointer);
seat->pointer.pointer = NULL;
}
}
static const struct wl_seat_listener seat_listener = {
.capabilities = seat_handle_capabilities,
.name = nop,
};
static void output_scale(void *data, struct wl_output *output,
int32_t factor) {
struct swaynag_output *swaynag_output = data;
swaynag_output->scale = factor;
if (swaynag_output->swaynag->output == swaynag_output) {
swaynag_output->swaynag->scale = swaynag_output->scale;
update_all_cursors(swaynag_output->swaynag);
render_frame(swaynag_output->swaynag);
}
}
static const struct wl_output_listener output_listener = {
.geometry = nop,
.mode = nop,
.done = nop,
.scale = output_scale,
};
static void xdg_output_handle_name(void *data,
struct zxdg_output_v1 *xdg_output, const char *name) {
struct swaynag_output *swaynag_output = data;
char *outname = swaynag_output->swaynag->type->output;
sway_log(SWAY_DEBUG, "Checking against output %s for %s", name, outname);
if (!swaynag_output->swaynag->output && outname && name
&& strcmp(outname, name) == 0) {
sway_log(SWAY_DEBUG, "Using output %s", name);
swaynag_output->swaynag->output = swaynag_output;
}
swaynag_output->name = strdup(name);
zxdg_output_v1_destroy(xdg_output);
swaynag_output->swaynag->querying_outputs--;
}
static const struct zxdg_output_v1_listener xdg_output_listener = {
.logical_position = nop,
.logical_size = nop,
.done = nop,
.name = xdg_output_handle_name,
.description = nop,
};
static void handle_global(void *data, struct wl_registry *registry,
uint32_t name, const char *interface, uint32_t version) {
struct swaynag *swaynag = data;
if (strcmp(interface, wl_compositor_interface.name) == 0) {
swaynag->compositor = wl_registry_bind(registry, name,
&wl_compositor_interface, 4);
} else if (strcmp(interface, wl_seat_interface.name) == 0) {
struct swaynag_seat *seat =
calloc(1, sizeof(struct swaynag_seat));
if (!seat) {
return;
}
seat->swaynag = swaynag;
seat->wl_name = name;
seat->wl_seat =
wl_registry_bind(registry, name, &wl_seat_interface, 1);
wl_seat_add_listener(seat->wl_seat, &seat_listener, seat);
wl_list_insert(&swaynag->seats, &seat->link);
} else if (strcmp(interface, wl_shm_interface.name) == 0) {
swaynag->shm = wl_registry_bind(registry, name, &wl_shm_interface, 1);
} else if (strcmp(interface, wl_output_interface.name) == 0) {
if (!swaynag->output && swaynag->xdg_output_manager) {
swaynag->querying_outputs++;
struct swaynag_output *output =
calloc(1, sizeof(struct swaynag_output));
output->wl_output = wl_registry_bind(registry, name,
&wl_output_interface, 3);
output->wl_name = name;
output->scale = 1;
output->swaynag = swaynag;
wl_list_insert(&swaynag->outputs, &output->link);
wl_output_add_listener(output->wl_output,
&output_listener, output);
struct zxdg_output_v1 *xdg_output;
xdg_output = zxdg_output_manager_v1_get_xdg_output(
swaynag->xdg_output_manager, output->wl_output);
zxdg_output_v1_add_listener(xdg_output,
&xdg_output_listener, output);
}
} else if (strcmp(interface, zwlr_layer_shell_v1_interface.name) == 0) {
swaynag->layer_shell = wl_registry_bind(
registry, name, &zwlr_layer_shell_v1_interface, 1);
} else if (strcmp(interface, zxdg_output_manager_v1_interface.name) == 0
&& version >= ZXDG_OUTPUT_V1_NAME_SINCE_VERSION) {
swaynag->xdg_output_manager = wl_registry_bind(registry, name,
&zxdg_output_manager_v1_interface,
ZXDG_OUTPUT_V1_NAME_SINCE_VERSION);
}
}
void swaynag_seat_destroy(struct swaynag_seat *seat) {
if (seat->pointer.cursor_theme) {
wl_cursor_theme_destroy(seat->pointer.cursor_theme);
}
if (seat->pointer.pointer) {
wl_pointer_destroy(seat->pointer.pointer);
}
wl_seat_destroy(seat->wl_seat);
wl_list_remove(&seat->link);
free(seat);
}
static void handle_global_remove(void *data, struct wl_registry *registry,
uint32_t name) {
struct swaynag *swaynag = data;
if (swaynag->output->wl_name == name) {
swaynag->run_display = false;
}
struct swaynag_seat *seat, *tmpseat;
wl_list_for_each_safe(seat, tmpseat, &swaynag->seats, link) {
if (seat->wl_name == name) {
swaynag_seat_destroy(seat);
}
}
}
static const struct wl_registry_listener registry_listener = {
.global = handle_global,
.global_remove = handle_global_remove,
};
void swaynag_setup_cursors(struct swaynag *swaynag) {
struct swaynag_seat *seat;
wl_list_for_each(seat, &swaynag->seats, link) {
struct swaynag_pointer *p = &seat->pointer;
p->cursor_surface =
wl_compositor_create_surface(swaynag->compositor);
assert(p->cursor_surface);
}
}
void swaynag_setup(struct swaynag *swaynag) {
swaynag->display = wl_display_connect(NULL);
if (!swaynag->display) {
sway_abort("Unable to connect to the compositor. "
"If your compositor is running, check or set the "
"WAYLAND_DISPLAY environment variable.");
}
swaynag->scale = 1;
struct wl_registry *registry = wl_display_get_registry(swaynag->display);
wl_registry_add_listener(registry, &registry_listener, swaynag);
if (wl_display_roundtrip(swaynag->display) < 0) {
sway_abort("failed to register with the wayland display");
}
assert(swaynag->compositor && swaynag->layer_shell && swaynag->shm);
while (swaynag->querying_outputs > 0) {
if (wl_display_roundtrip(swaynag->display) < 0) {
sway_log(SWAY_ERROR, "Error during outputs init.");
swaynag_destroy(swaynag);
exit(EXIT_FAILURE);
}
}
if (!swaynag->output && swaynag->type->output) {
sway_log(SWAY_ERROR, "Output '%s' not found", swaynag->type->output);
swaynag_destroy(swaynag);
exit(EXIT_FAILURE);
}
swaynag_setup_cursors(swaynag);
swaynag->surface = wl_compositor_create_surface(swaynag->compositor);
assert(swaynag->surface);
wl_surface_add_listener(swaynag->surface, &surface_listener, swaynag);
swaynag->layer_surface = zwlr_layer_shell_v1_get_layer_surface(
swaynag->layer_shell, swaynag->surface,
swaynag->output ? swaynag->output->wl_output : NULL,
swaynag->type->layer,
"swaynag");
assert(swaynag->layer_surface);
zwlr_layer_surface_v1_add_listener(swaynag->layer_surface,
&layer_surface_listener, swaynag);
zwlr_layer_surface_v1_set_anchor(swaynag->layer_surface,
swaynag->type->anchors);
wl_registry_destroy(registry);
}
void swaynag_run(struct swaynag *swaynag) {
swaynag->run_display = true;
render_frame(swaynag);
while (swaynag->run_display
&& wl_display_dispatch(swaynag->display) != -1) {
// This is intentionally left blank
}
if (swaynag->display) {
wl_display_disconnect(swaynag->display);
}
}
void swaynag_destroy(struct swaynag *swaynag) {
swaynag->run_display = false;
free(swaynag->message);
for (int i = 0; i < swaynag->buttons->length; ++i) {
struct swaynag_button *button = swaynag->buttons->items[i];
free(button->text);
free(button->action);
free(button);
}
list_free(swaynag->buttons);
free(swaynag->details.message);
free(swaynag->details.button_up.text);
free(swaynag->details.button_down.text);
if (swaynag->type) {
swaynag_type_free(swaynag->type);
}
if (swaynag->layer_surface) {
zwlr_layer_surface_v1_destroy(swaynag->layer_surface);
}
if (swaynag->surface) {
wl_surface_destroy(swaynag->surface);
}
struct swaynag_seat *seat, *tmpseat;
wl_list_for_each_safe(seat, tmpseat, &swaynag->seats, link) {
swaynag_seat_destroy(seat);
}
if (&swaynag->buffers[0]) {
destroy_buffer(&swaynag->buffers[0]);
}
if (&swaynag->buffers[1]) {
destroy_buffer(&swaynag->buffers[1]);
}
if (swaynag->outputs.prev || swaynag->outputs.next) {
struct swaynag_output *output, *temp;
wl_list_for_each_safe(output, temp, &swaynag->outputs, link) {
wl_output_destroy(output->wl_output);
free(output->name);
wl_list_remove(&output->link);
free(output);
};
}
if (swaynag->compositor) {
wl_compositor_destroy(swaynag->compositor);
}
if (swaynag->shm) {
wl_shm_destroy(swaynag->shm);
}
}