1 files changed, 127 insertions, 0 deletions
diff --git a/swaybar/tray/tray.c b/swaybar/tray/tray.c
new file mode 100644
index 00000000..acc300af
--- /dev/null
+++ b/swaybar/tray/tray.c
@@ -0,0 +1,127 @@
+#include <cairo.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include "swaybar/config.h"
+#include "swaybar/bar.h"
+#include "swaybar/tray/icon.h"
+#include "swaybar/tray/host.h"
+#include "swaybar/tray/item.h"
+#include "swaybar/tray/tray.h"
+#include "swaybar/tray/watcher.h"
+#include "list.h"
+#include "log.h"
+
+static int handle_lost_watcher(sd_bus_message *msg,
+		void *data, sd_bus_error *error) {
+	char *service, *old_owner, *new_owner;
+	int ret = sd_bus_message_read(msg, "sss", &service, &old_owner, &new_owner);
+	if (ret < 0) {
+		wlr_log(WLR_ERROR, "Failed to parse owner change message: %s", strerror(-ret));
+		return ret;
+	}
+
+	if (!*new_owner) {
+		struct swaybar_tray *tray = data;
+		if (strcmp(service, "org.freedesktop.StatusNotifierWatcher") == 0) {
+			tray->watcher_xdg = create_watcher("freedesktop", tray->bus);
+		} else if (strcmp(service, "org.kde.StatusNotifierWatcher") == 0) {
+			tray->watcher_kde = create_watcher("kde", tray->bus);
+		}
+	}
+
+	return 0;
+}
+
+struct swaybar_tray *create_tray(struct swaybar *bar) {
+	wlr_log(WLR_DEBUG, "Initializing tray");
+
+	sd_bus *bus;
+	int ret = sd_bus_open_user(&bus);
+	if (ret < 0) {
+		wlr_log(WLR_ERROR, "Failed to connect to user bus: %s", strerror(-ret));
+		return NULL;
+	}
+
+	struct swaybar_tray *tray = calloc(1, sizeof(struct swaybar_tray));
+	if (!tray) {
+		return NULL;
+	}
+	tray->bar = bar;
+	tray->bus = bus;
+	tray->fd = sd_bus_get_fd(tray->bus);
+
+	tray->watcher_xdg = create_watcher("freedesktop", tray->bus);
+	tray->watcher_kde = create_watcher("kde", tray->bus);
+
+	ret = sd_bus_match_signal(bus, NULL, "org.freedesktop.DBus",
+			"/org/freedesktop/DBus", "org.freedesktop.DBus",
+			"NameOwnerChanged", handle_lost_watcher, tray);
+	if (ret < 0) {
+		wlr_log(WLR_ERROR, "Failed to subscribe to unregistering events: %s",
+				strerror(-ret));
+	}
+
+	tray->items = create_list();
+
+	init_host(&tray->host_xdg, "freedesktop", tray);
+	init_host(&tray->host_kde, "kde", tray);
+
+	init_themes(&tray->themes, &tray->basedirs);
+
+	return tray;
+}
+
+void destroy_tray(struct swaybar_tray *tray) {
+	if (!tray) {
+		return;
+	}
+	finish_host(&tray->host_xdg);
+	finish_host(&tray->host_kde);
+	for (int i = 0; i < tray->items->length; ++i) {
+		destroy_sni(tray->items->items[0]);
+	}
+	list_free(tray->items);
+	destroy_watcher(tray->watcher_xdg);
+	destroy_watcher(tray->watcher_kde);
+	sd_bus_flush_close_unref(tray->bus);
+	finish_themes(tray->themes, tray->basedirs);
+	free(tray);
+}
+
+void tray_in(int fd, short mask, void *data) {
+	sd_bus *bus = data;
+	int ret;
+	while ((ret = sd_bus_process(bus, NULL)) > 0) {
+		// This space intentionally left blank
+	}
+	if (ret < 0) {
+		wlr_log(WLR_ERROR, "Failed to process bus: %s", strerror(-ret));
+	}
+}
+
+static int cmp_output(const void *item, const void *cmp_to) {
+	return strcmp(item, cmp_to);
+}
+
+uint32_t render_tray(cairo_t *cairo, struct swaybar_output *output, double *x) {
+	struct swaybar_config *config = output->bar->config;
+	if (config->tray_outputs) {
+		if (list_seq_find(config->tray_outputs, cmp_output, output->name) == -1) {
+			return 0;
+		}
+	} // else display on all
+
+	if ((int) output->height*output->scale <= 2*config->tray_padding) {
+		return 2*config->tray_padding + 1;
+	}
+
+	uint32_t max_height = 0;
+	struct swaybar_tray *tray = output->bar->tray;
+	for (int i = 0; i < tray->items->length; ++i) {
+		uint32_t h = render_sni(cairo, output, x, tray->items->items[i]);
+		max_height = h > max_height ? h : max_height;
+	}
+
+	return max_height;
+}