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 <arpa/inet.h>
#include <cairo.h>
#include <limits.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include "swaybar/bar.h"
#include "swaybar/config.h"
#include "swaybar/input.h"
#include "swaybar/tray/host.h"
#include "swaybar/tray/icon.h"
#include "swaybar/tray/item.h"
#include "swaybar/tray/tray.h"
#include "background-image.h"
#include "cairo_util.h"
#include "list.h"
#include "log.h"
#include "wlr-layer-shell-unstable-v1-client-protocol.h"
// TODO menu
static bool sni_ready(struct swaybar_sni *sni) {
return sni->status && (sni->status[0] == 'N' ? // NeedsAttention
sni->attention_icon_name || sni->attention_icon_pixmap :
sni->icon_name || sni->icon_pixmap);
}
static void set_sni_dirty(struct swaybar_sni *sni) {
if (sni_ready(sni)) {
sni->target_size = sni->min_size = sni->max_size = 0; // invalidate previous icon
set_bar_dirty(sni->tray->bar);
}
}
static int read_pixmap(sd_bus_message *msg, struct swaybar_sni *sni,
const char *prop, list_t **dest) {
int ret = sd_bus_message_enter_container(msg, 'a', "(iiay)");
if (ret < 0) {
sway_log(SWAY_ERROR, "%s %s: %s", sni->watcher_id, prop, strerror(-ret));
return ret;
}
if (sd_bus_message_at_end(msg, 0)) {
sway_log(SWAY_DEBUG, "%s %s no. of icons = 0", sni->watcher_id, prop);
return ret;
}
list_t *pixmaps = create_list();
if (!pixmaps) {
return -12; // -ENOMEM
}
while (!sd_bus_message_at_end(msg, 0)) {
ret = sd_bus_message_enter_container(msg, 'r', "iiay");
if (ret < 0) {
sway_log(SWAY_ERROR, "%s %s: %s", sni->watcher_id, prop, strerror(-ret));
goto error;
}
int width, height;
ret = sd_bus_message_read(msg, "ii", &width, &height);
if (ret < 0) {
sway_log(SWAY_ERROR, "%s %s: %s", sni->watcher_id, prop, strerror(-ret));
goto error;
}
const void *pixels;
size_t npixels;
ret = sd_bus_message_read_array(msg, 'y', &pixels, &npixels);
if (ret < 0) {
sway_log(SWAY_ERROR, "%s %s: %s", sni->watcher_id, prop, strerror(-ret));
goto error;
}
if (height > 0 && width == height) {
sway_log(SWAY_DEBUG, "%s %s: found icon w:%d h:%d", sni->watcher_id, prop, width, height);
struct swaybar_pixmap *pixmap =
malloc(sizeof(struct swaybar_pixmap) + npixels);
pixmap->size = height;
// convert from network byte order to host byte order
for (int i = 0; i < height * width; ++i) {
((uint32_t *)pixmap->pixels)[i] = ntohl(((uint32_t *)pixels)[i]);
}
list_add(pixmaps, pixmap);
} else {
sway_log(SWAY_DEBUG, "%s %s: discard invalid icon w:%d h:%d", sni->watcher_id, prop, width, height);
}
sd_bus_message_exit_container(msg);
}
if (pixmaps->length < 1) {
sway_log(SWAY_DEBUG, "%s %s no. of icons = 0", sni->watcher_id, prop);
goto error;
}
list_free_items_and_destroy(*dest);
*dest = pixmaps;
sway_log(SWAY_DEBUG, "%s %s no. of icons = %d", sni->watcher_id, prop,
pixmaps->length);
return ret;
error:
list_free_items_and_destroy(pixmaps);
return ret;
}
static int get_property_callback(sd_bus_message *msg, void *data,
sd_bus_error *error) {
struct swaybar_sni_slot *d = data;
struct swaybar_sni *sni = d->sni;
const char *prop = d->prop;
const char *type = d->type;
void *dest = d->dest;
int ret;
if (sd_bus_message_is_method_error(msg, NULL)) {
const sd_bus_error *err = sd_bus_message_get_error(msg);
sway_log_importance_t log_lv = SWAY_ERROR;
if ((!strcmp(prop, "IconThemePath")) &&
(!strcmp(err->name, SD_BUS_ERROR_UNKNOWN_PROPERTY))) {
log_lv = SWAY_DEBUG;
}
sway_log(log_lv, "%s %s: %s", sni->watcher_id, prop, err->message);
ret = sd_bus_message_get_errno(msg);
goto cleanup;
}
ret = sd_bus_message_enter_container(msg, 'v', type);
if (ret < 0) {
sway_log(SWAY_ERROR, "%s %s: %s", sni->watcher_id, prop, strerror(-ret));
goto cleanup;
}
if (!type) {
ret = read_pixmap(msg, sni, prop, dest);
if (ret < 0) {
goto cleanup;
}
} else {
if (*type == 's' || *type == 'o') {
free(*(char **)dest);
}
ret = sd_bus_message_read(msg, type, dest);
if (ret < 0) {
sway_log(SWAY_ERROR, "%s %s: %s", sni->watcher_id, prop, strerror(-ret));
goto cleanup;
}
if (*type == 's' || *type == 'o') {
char **str = dest;
*str = strdup(*str);
sway_log(SWAY_DEBUG, "%s %s = '%s'", sni->watcher_id, prop, *str);
} else if (*type == 'b') {
sway_log(SWAY_DEBUG, "%s %s = %s", sni->watcher_id, prop,
*(bool *)dest ? "true" : "false");
}
}
if (strcmp(prop, "Status") == 0 || (sni->status && (sni->status[0] == 'N' ?
prop[0] == 'A' : strncmp(prop, "Icon", 4) == 0))) {
set_sni_dirty(sni);
}
cleanup:
wl_list_remove(&d->link);
free(data);
return ret;
}
static void sni_get_property_async(struct swaybar_sni *sni, const char *prop,
const char *type, void *dest) {
struct swaybar_sni_slot *data = calloc(1, sizeof(struct swaybar_sni_slot));
data->sni = sni;
data->prop = prop;
data->type = type;
data->dest = dest;
int ret = sd_bus_call_method_async(sni->tray->bus, &data->slot, sni->service,
sni->path, "org.freedesktop.DBus.Properties", "Get",
get_property_callback, data, "ss", sni->interface, prop);
if (ret >= 0) {
wl_list_insert(&sni->slots, &data->link);
} else {
sway_log(SWAY_ERROR, "%s %s: %s", sni->watcher_id, prop, strerror(-ret));
free(data);
}
}
/*
* There is a quirk in sd-bus that in some systems, it is unable to get the
* well-known names on the bus, so it cannot identify if an incoming signal,
* which uses the sender's unique name, actually matches the callback's matching
* sender if the callback uses a well-known name, in which case it just calls
* the callback and hopes for the best, resulting in false positives. In the
* case of NewIcon & NewAttentionIcon, this doesn't affect anything, but it
* means that for NewStatus, if the SNI does not definitely match the sender,
* then the safe thing to do is to query the status independently.
* This function returns 1 if the SNI definitely matches the signal sender,
* which is returned by the calling function to indicate that signal matching
* can stop since it has already found the required callback, otherwise, it
* returns 0, which allows matching to continue.
*/
static int sni_check_msg_sender(struct swaybar_sni *sni, sd_bus_message *msg,
const char *signal) {
bool has_well_known_names =
sd_bus_creds_get_mask(sd_bus_message_get_creds(msg)) & SD_BUS_CREDS_WELL_KNOWN_NAMES;
if (sni->service[0] == ':' || has_well_known_names) {
sway_log(SWAY_DEBUG, "%s has new %s", sni->watcher_id, signal);
return 1;
} else {
sway_log(SWAY_DEBUG, "%s may have new %s", sni->watcher_id, signal);
return 0;
}
}
static int handle_new_icon(sd_bus_message *msg, void *data, sd_bus_error *error) {
struct swaybar_sni *sni = data;
sni_get_property_async(sni, "IconName", "s", &sni->icon_name);
sni_get_property_async(sni, "IconPixmap", NULL, &sni->icon_pixmap);
if (!strcmp(sni->interface, "org.kde.StatusNotifierItem")) {
sni_get_property_async(sni, "IconThemePath", "s", &sni->icon_theme_path);
}
return sni_check_msg_sender(sni, msg, "icon");
}
static int handle_new_attention_icon(sd_bus_message *msg, void *data,
sd_bus_error *error) {
struct swaybar_sni *sni = data;
sni_get_property_async(sni, "AttentionIconName", "s", &sni->attention_icon_name);
sni_get_property_async(sni, "AttentionIconPixmap", NULL, &sni->attention_icon_pixmap);
return sni_check_msg_sender(sni, msg, "attention icon");
}
static int handle_new_status(sd_bus_message *msg, void *data, sd_bus_error *error) {
struct swaybar_sni *sni = data;
int ret = sni_check_msg_sender(sni, msg, "status");
if (ret == 1) {
char *status;
int r = sd_bus_message_read(msg, "s", &status);
if (r < 0) {
sway_log(SWAY_ERROR, "%s new status error: %s", sni->watcher_id, strerror(-ret));
ret = r;
} else {
free(sni->status);
sni->status = strdup(status);
sway_log(SWAY_DEBUG, "%s has new status = '%s'", sni->watcher_id, status);
set_sni_dirty(sni);
}
} else {
sni_get_property_async(sni, "Status", "s", &sni->status);
}
return ret;
}
static void sni_match_signal_async(struct swaybar_sni *sni, char *signal,
sd_bus_message_handler_t callback) {
struct swaybar_sni_slot *slot = calloc(1, sizeof(struct swaybar_sni_slot));
int ret = sd_bus_match_signal_async(sni->tray->bus, &slot->slot,
sni->service, sni->path, sni->interface, signal, callback, NULL, sni);
if (ret >= 0) {
wl_list_insert(&sni->slots, &slot->link);
} else {
sway_log(SWAY_ERROR, "%s failed to subscribe to signal %s: %s",
sni->service, signal, strerror(-ret));
free(slot);
}
}
struct swaybar_sni *create_sni(char *id, struct swaybar_tray *tray) {
struct swaybar_sni *sni = calloc(1, sizeof(struct swaybar_sni));
if (!sni) {
return NULL;
}
sni->tray = tray;
wl_list_init(&sni->slots);
sni->watcher_id = strdup(id);
char *path_ptr = strchr(id, '/');
if (!path_ptr) {
sni->service = strdup(id);
sni->path = strdup("/StatusNotifierItem");
sni->interface = "org.freedesktop.StatusNotifierItem";
} else {
sni->service = strndup(id, path_ptr - id);
sni->path = strdup(path_ptr);
sni->interface = "org.kde.StatusNotifierItem";
sni_get_property_async(sni, "IconThemePath", "s", &sni->icon_theme_path);
}
// Ignored: Category, Id, Title, WindowId, OverlayIconName,
// OverlayIconPixmap, AttentionMovieName, ToolTip
sni_get_property_async(sni, "Status", "s", &sni->status);
sni_get_property_async(sni, "IconName", "s", &sni->icon_name);
sni_get_property_async(sni, "IconPixmap", NULL, &sni->icon_pixmap);
sni_get_property_async(sni, "AttentionIconName", "s", &sni->attention_icon_name);
sni_get_property_async(sni, "AttentionIconPixmap", NULL, &sni->attention_icon_pixmap);
sni_get_property_async(sni, "ItemIsMenu", "b", &sni->item_is_menu);
sni_get_property_async(sni, "Menu", "o", &sni->menu);
sni_match_signal_async(sni, "NewIcon", handle_new_icon);
sni_match_signal_async(sni, "NewAttentionIcon", handle_new_attention_icon);
sni_match_signal_async(sni, "NewStatus", handle_new_status);
return sni;
}
void destroy_sni(struct swaybar_sni *sni) {
if (!sni) {
return;
}
cairo_surface_destroy(sni->icon);
free(sni->watcher_id);
free(sni->service);
free(sni->path);
free(sni->status);
free(sni->icon_name);
list_free_items_and_destroy(sni->icon_pixmap);
free(sni->attention_icon_name);
list_free_items_and_destroy(sni->attention_icon_pixmap);
free(sni->menu);
free(sni->icon_theme_path);
struct swaybar_sni_slot *slot, *slot_tmp;
wl_list_for_each_safe(slot, slot_tmp, &sni->slots, link) {
sd_bus_slot_unref(slot->slot);
free(slot);
}
free(sni);
}
static void handle_click(struct swaybar_sni *sni, int x, int y,
uint32_t button, int delta) {
const char *method = NULL;
struct tray_binding *binding = NULL;
wl_list_for_each(binding, &sni->tray->bar->config->tray_bindings, link) {
if (binding->button == button) {
method = binding->command;
break;
}
}
if (!method) {
static const char *default_bindings[10] = {
"nop",
"Activate",
"SecondaryActivate",
"ContextMenu",
"ScrollUp",
"ScrollDown",
"ScrollLeft",
"ScrollRight",
"nop",
"nop"
};
method = default_bindings[event_to_x11_button(button)];
}
if (strcmp(method, "nop") == 0) {
return;
}
if (sni->item_is_menu && strcmp(method, "Activate") == 0) {
method = "ContextMenu";
}
if (strncmp(method, "Scroll", strlen("Scroll")) == 0) {
char dir = method[strlen("Scroll")];
char *orientation = (dir == 'U' || dir == 'D') ? "vertical" : "horizontal";
int sign = (dir == 'U' || dir == 'L') ? -1 : 1;
sd_bus_call_method_async(sni->tray->bus, NULL, sni->service, sni->path,
sni->interface, "Scroll", NULL, NULL, "is", delta*sign, orientation);
} else {
sd_bus_call_method_async(sni->tray->bus, NULL, sni->service, sni->path,
sni->interface, method, NULL, NULL, "ii", x, y);
}
}
static int cmp_sni_id(const void *item, const void *cmp_to) {
const struct swaybar_sni *sni = item;
return strcmp(sni->watcher_id, cmp_to);
}
static enum hotspot_event_handling icon_hotspot_callback(
struct swaybar_output *output, struct swaybar_hotspot *hotspot,
double x, double y, uint32_t button, void *data) {
sway_log(SWAY_DEBUG, "Clicked on %s", (char *)data);
struct swaybar_tray *tray = output->bar->tray;
int idx = list_seq_find(tray->items, cmp_sni_id, data);
if (idx != -1) {
struct swaybar_sni *sni = tray->items->items[idx];
// guess global position since wayland doesn't expose it
struct swaybar_config *config = tray->bar->config;
int global_x = output->output_x + config->gaps.left + x;
bool top_bar = config->position & ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP;
int global_y = output->output_y + (top_bar ? config->gaps.top + y:
(int) output->output_height - config->gaps.bottom - y);
sway_log(SWAY_DEBUG, "Guessing click position at (%d, %d)", global_x, global_y);
handle_click(sni, global_x, global_y, button, 1); // TODO get delta from event
return HOTSPOT_IGNORE;
} else {
sway_log(SWAY_DEBUG, "but it doesn't exist");
}
return HOTSPOT_PROCESS;
}
static void reload_sni(struct swaybar_sni *sni, char *icon_theme,
int target_size) {
char *icon_name = sni->status[0] == 'N' ?
sni->attention_icon_name : sni->icon_name;
if (icon_name) {
list_t *icon_search_paths = create_list();
list_cat(icon_search_paths, sni->tray->basedirs);
if (sni->icon_theme_path) {
list_add(icon_search_paths, sni->icon_theme_path);
}
char *icon_path = find_icon(sni->tray->themes, icon_search_paths,
icon_name, target_size, icon_theme,
&sni->min_size, &sni->max_size);
list_free(icon_search_paths);
if (icon_path) {
cairo_surface_destroy(sni->icon);
sni->icon = load_background_image(icon_path);
free(icon_path);
return;
}
}
list_t *pixmaps = sni->status[0] == 'N' ?
sni->attention_icon_pixmap : sni->icon_pixmap;
if (pixmaps) {
struct swaybar_pixmap *pixmap = NULL;
int min_error = INT_MAX;
for (int i = 0; i < pixmaps->length; ++i) {
struct swaybar_pixmap *p = pixmaps->items[i];
int e = abs(target_size - p->size);
if (e < min_error) {
pixmap = p;
min_error = e;
}
}
cairo_surface_destroy(sni->icon);
sni->icon = cairo_image_surface_create_for_data(pixmap->pixels,
CAIRO_FORMAT_ARGB32, pixmap->size, pixmap->size,
cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, pixmap->size));
}
}
uint32_t render_sni(cairo_t *cairo, struct swaybar_output *output, double *x,
struct swaybar_sni *sni) {
uint32_t height = output->height * output->scale;
int padding = output->bar->config->tray_padding;
int target_size = height - 2*padding;
if (target_size != sni->target_size && sni_ready(sni)) {
// check if another icon should be loaded
if (target_size < sni->min_size || target_size > sni->max_size) {
reload_sni(sni, output->bar->config->icon_theme, target_size);
}
sni->target_size = target_size;
}
int icon_size;
cairo_surface_t *icon;
if (sni->icon) {
int actual_size = cairo_image_surface_get_height(sni->icon);
icon_size = actual_size < target_size ?
actual_size*(target_size/actual_size) : target_size;
icon = cairo_image_surface_scale(sni->icon, icon_size, icon_size);
} else { // draw a :(
icon_size = target_size*0.8;
icon = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, icon_size, icon_size);
cairo_t *cairo_icon = cairo_create(icon);
cairo_set_source_u32(cairo_icon, 0xFF0000FF);
cairo_translate(cairo_icon, icon_size/2, icon_size/2);
cairo_scale(cairo_icon, icon_size/2, icon_size/2);
cairo_arc(cairo_icon, 0, 0, 1, 0, 7);
cairo_fill(cairo_icon);
cairo_set_operator(cairo_icon, CAIRO_OPERATOR_CLEAR);
cairo_arc(cairo_icon, 0.35, -0.3, 0.1, 0, 7);
cairo_fill(cairo_icon);
cairo_arc(cairo_icon, -0.35, -0.3, 0.1, 0, 7);
cairo_fill(cairo_icon);
cairo_arc(cairo_icon, 0, 0.75, 0.5, 3.71238898038469, 5.71238898038469);
cairo_set_line_width(cairo_icon, 0.1);
cairo_stroke(cairo_icon);
cairo_destroy(cairo_icon);
}
int padded_size = icon_size + 2*padding;
*x -= padded_size;
int y = floor((height - padded_size) / 2.0);
cairo_operator_t op = cairo_get_operator(cairo);
cairo_set_operator(cairo, CAIRO_OPERATOR_OVER);
cairo_set_source_surface(cairo, icon, *x + padding, y + padding);
cairo_rectangle(cairo, *x, y, padded_size, padded_size);
cairo_fill(cairo);
cairo_set_operator(cairo, op);
cairo_surface_destroy(icon);
struct swaybar_hotspot *hotspot = calloc(1, sizeof(struct swaybar_hotspot));
hotspot->x = *x;
hotspot->y = 0;
hotspot->width = height;
hotspot->height = height;
hotspot->callback = icon_hotspot_callback;
hotspot->destroy = free;
hotspot->data = strdup(sni->watcher_id);
wl_list_insert(&output->hotspots, &hotspot->link);
return output->height;
}