swaybar: implement mouse events for tray

include/swaybar/bar.h

@@ -65,6 +65,8 @@ struct swaybar_output {
 	struct pool_buffer *current_buffer;
 	bool dirty;
 	bool frame_scheduled;
+
+	uint32_t output_height, output_width, output_x, output_y;
 };
 
 struct swaybar_workspace {

swaybar/bar.c

@@ -210,12 +210,16 @@ struct wl_output_listener output_listener = {
 
 static void xdg_output_handle_logical_position(void *data,
 		struct zxdg_output_v1 *xdg_output, int32_t x, int32_t y) {
-	// Who cares
+	struct swaybar_output *output = data;
+	output->output_x = x;
+	output->output_y = y;
 }
 
 static void xdg_output_handle_logical_size(void *data,
 		struct zxdg_output_v1 *xdg_output, int32_t width, int32_t height) {
-	// Who cares
+	struct swaybar_output *output = data;
+	output->output_height = height;
+	output->output_width = width;
 }
 
 static void xdg_output_handle_done(void *data,

swaybar/tray/item_kde.c

@@ -4,13 +4,15 @@
 #include <string.h>
 #include "swaybar/bar.h"
 #include "swaybar/config.h"
+#include "swaybar/input.h"
 #include "swaybar/tray/host_kde.h"
 #include "swaybar/tray/icon.h"
 #include "swaybar/tray/item_kde.h"
 #include "swaybar/tray/tray.h"
 #include "background-image.h"
 #include "cairo.h"
 #include "log.h"
+#include "wlr-layer-shell-unstable-v1-client-protocol.h"
 
 static char *interface = "org.kde.StatusNotifierItem";
 
@@ -132,6 +134,55 @@ void destroy_sni_kde(struct swaybar_sni_kde *sni) {
 	free(sni);
 }
 
+static void sni_handle_click(struct swaybar_sni_kde *sni, int x, int y, enum x11_button button) {
+	sd_bus *bus = sni->tray->bus;
+
+	char *method;
+	switch (button) {
+		case LEFT: method = sni->item_is_menu ? "ContextMenu" : "Activate"; break;
+		case RIGHT: method = "ContextMenu"; break;
+		case MIDDLE: method = "SecondaryActivate"; break;
+		default: method = NULL;
+	}
+
+	if (method) {
+		sd_bus_error error = SD_BUS_ERROR_NULL;
+		// Remember: "is" for scroll
+		int ret = sd_bus_call_method(bus, sni->service, sni->path, interface,
+				method, &error, NULL, "ii", x, y);
+		if (ret < 0) {
+			wlr_log(WLR_DEBUG, "Failed to click button: %s", error.message);
+			sd_bus_error_free(&error);
+		}
+	}
+}
+
+static enum hotspot_event_handling icon_hotspot_callback(
+		struct swaybar_output *output, struct swaybar_hotspot *hotspot,
+		int x, int y, enum x11_button button, void *data) {
+	wlr_log(WLR_DEBUG, "Clicked on sni %s", (char *)data);
+
+	struct swaybar_tray *tray = output->bar->tray;
+	struct swaybar_host_kde *host_kde = tray->host_kde;
+
+	for (int i = 0; i < host_kde->items->length; ++i) {
+		struct swaybar_sni_kde *sni = host_kde->items->items[i];
+		if (strcmp(sni->dbus_id, data) == 0) {
+			// guess actual position since wayland doesn't expose it
+			// output pos + output dimensions + position + bar gaps
+			int global_x = output->output_x + x;
+			int global_y = output->output_y + (output->bar->config->position & ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP ? y : (int) output->output_height - y);
+
+			wlr_log(WLR_DEBUG, "Guessing click at %d %d", global_x, global_y);
+
+			sni_handle_click(sni, global_x, global_y, button);
+			return HOTSPOT_IGNORE;
+		}
+	}
+
+	return HOTSPOT_PROCESS;
+}
+
 uint32_t render_sni_kde(cairo_t *cairo, struct swaybar_output *output,
 		double *x, struct swaybar_sni_kde *sni) {
 	uint32_t height = output->height * output->scale;
@@ -174,5 +225,15 @@ uint32_t render_sni_kde(cairo_t *cairo, struct swaybar_output *output,
 
 	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->dbus_id);
+	wl_list_insert(&output->hotspots, &hotspot->link);
+
 	return output->height;
 }